diff --git a/BasicUsageEnvironment/BasicHashTable.cpp b/BasicUsageEnvironment/BasicHashTable.cpp
new file mode 100644
index 0000000..fb5617a
--- /dev/null
+++ b/BasicUsageEnvironment/BasicHashTable.cpp
@@ -0,0 +1,277 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Basic Hash Table implementation
+// Implementation
+
+#include "BasicHashTable.hh"
+#include "strDup.hh"
+
+#if defined(__WIN32__) || defined(_WIN32)
+#else
+#include <stddef.h>
+#endif
+#include <string.h>
+#include <stdio.h>
+
+// When there are this many entries per bucket, on average, rebuild
+// the table to increase the number of buckets
+#define REBUILD_MULTIPLIER 3
+
+BasicHashTable::BasicHashTable(int keyType)
+  : fBuckets(fStaticBuckets), fNumBuckets(SMALL_HASH_TABLE_SIZE),
+    fNumEntries(0), fRebuildSize(SMALL_HASH_TABLE_SIZE*REBUILD_MULTIPLIER),
+    fDownShift(28), fMask(0x3), fKeyType(keyType) {
+  for (unsigned i = 0; i < SMALL_HASH_TABLE_SIZE; ++i) {
+    fStaticBuckets[i] = NULL;
+  }
+}
+
+BasicHashTable::~BasicHashTable() {
+  // Free all the entries in the table:
+  for (unsigned i = 0; i < fNumBuckets; ++i) {
+    TableEntry* entry;
+    while ((entry = fBuckets[i]) != NULL) {
+      deleteEntry(i, entry);
+    }
+  }
+
+  // Also free the bucket array, if it was dynamically allocated:
+  if (fBuckets != fStaticBuckets) delete[] fBuckets;
+}
+
+void* BasicHashTable::Add(char const* key, void* value) {
+  void* oldValue;
+  unsigned index;
+  TableEntry* entry = lookupKey(key, index);
+  if (entry != NULL) {
+    // There's already an item with this key
+    oldValue = entry->value;
+  } else {
+    // There's no existing entry; create a new one:
+    entry = insertNewEntry(index, key);
+    oldValue = NULL;
+  }
+  entry->value = value;
+
+  // If the table has become too large, rebuild it with more buckets:
+  if (fNumEntries >= fRebuildSize) rebuild();
+
+  return oldValue;
+}
+
+Boolean BasicHashTable::Remove(char const* key) {
+  unsigned index;
+  TableEntry* entry = lookupKey(key, index);
+  if (entry == NULL) return False; // no such entry
+
+  deleteEntry(index, entry);
+
+  return True;
+}
+
+void* BasicHashTable::Lookup(char const* key) const {
+  unsigned index;
+  TableEntry* entry = lookupKey(key, index);
+  if (entry == NULL) return NULL; // no such entry
+
+  return entry->value;
+}
+
+unsigned BasicHashTable::numEntries() const {
+  return fNumEntries;
+}
+
+BasicHashTable::Iterator::Iterator(BasicHashTable const& table)
+  : fTable(table), fNextIndex(0), fNextEntry(NULL) {
+}
+
+void* BasicHashTable::Iterator::next(char const*& key) {
+  while (fNextEntry == NULL) {
+    if (fNextIndex >= fTable.fNumBuckets) return NULL;
+
+    fNextEntry = fTable.fBuckets[fNextIndex++];
+  }
+
+  BasicHashTable::TableEntry* entry = fNextEntry;
+  fNextEntry = entry->fNext;
+
+  key = entry->key;
+  return entry->value;
+}
+
+////////// Implementation of HashTable creation functions //////////
+
+HashTable* HashTable::create(int keyType) {
+  return new BasicHashTable(keyType);
+}
+
+HashTable::Iterator* HashTable::Iterator::create(HashTable const& hashTable) {
+  // "hashTable" is assumed to be a BasicHashTable
+  return new BasicHashTable::Iterator((BasicHashTable const&)hashTable);
+}
+
+////////// Implementation of internal member functions //////////
+
+BasicHashTable::TableEntry* BasicHashTable
+::lookupKey(char const* key, unsigned& index) const {
+  TableEntry* entry;
+  index = hashIndexFromKey(key);
+
+  for (entry = fBuckets[index]; entry != NULL; entry = entry->fNext) {
+    if (keyMatches(key, entry->key)) break;
+  }
+
+  return entry;
+}
+
+Boolean BasicHashTable
+::keyMatches(char const* key1, char const* key2) const {
+  // The way we check the keys for a match depends upon their type:
+  if (fKeyType == STRING_HASH_KEYS) {
+    return (strcmp(key1, key2) == 0);
+  } else if (fKeyType == ONE_WORD_HASH_KEYS) {
+    return (key1 == key2);
+  } else {
+    unsigned* k1 = (unsigned*)key1;
+    unsigned* k2 = (unsigned*)key2;
+
+    for (int i = 0; i < fKeyType; ++i) {
+      if (k1[i] != k2[i]) return False; // keys differ
+    }
+    return True;
+  }
+}
+
+BasicHashTable::TableEntry* BasicHashTable
+::insertNewEntry(unsigned index, char const* key) {
+  TableEntry* entry = new TableEntry();
+  entry->fNext = fBuckets[index];
+  fBuckets[index] = entry;
+
+  ++fNumEntries;
+  assignKey(entry, key);
+
+  return entry;
+}
+
+void BasicHashTable::assignKey(TableEntry* entry, char const* key) {
+  // The way we assign the key depends upon its type:
+  if (fKeyType == STRING_HASH_KEYS) {
+    entry->key = strDup(key);
+  } else if (fKeyType == ONE_WORD_HASH_KEYS) {
+    entry->key = key;
+  } else if (fKeyType > 0) {
+    unsigned* keyFrom = (unsigned*)key;
+    unsigned* keyTo = new unsigned[fKeyType];
+    for (int i = 0; i < fKeyType; ++i) keyTo[i] = keyFrom[i];
+
+    entry->key = (char const*)keyTo;
+  }
+}
+
+void BasicHashTable::deleteEntry(unsigned index, TableEntry* entry) {
+  TableEntry** ep = &fBuckets[index];
+
+  Boolean foundIt = False;
+  while (*ep != NULL) {
+    if (*ep == entry) {
+      foundIt = True;
+      *ep = entry->fNext;
+      break;
+    }
+    ep = &((*ep)->fNext);
+  }
+
+  if (!foundIt) { // shouldn't happen
+#ifdef DEBUG
+    fprintf(stderr, "BasicHashTable[%p]::deleteEntry(%d,%p): internal error - not found (first entry %p", this, index, entry, fBuckets[index]);
+    if (fBuckets[index] != NULL) fprintf(stderr, ", next entry %p", fBuckets[index]->fNext);
+    fprintf(stderr, ")\n");
+#endif
+  }
+
+  --fNumEntries;
+  deleteKey(entry);
+  delete entry;
+}
+
+void BasicHashTable::deleteKey(TableEntry* entry) {
+  // The way we delete the key depends upon its type:
+  if (fKeyType == ONE_WORD_HASH_KEYS) {
+    entry->key = NULL;
+  } else {
+    delete[] (char*)entry->key;
+    entry->key = NULL;
+  }
+}
+
+void BasicHashTable::rebuild() {
+  // Remember the existing table size:
+  unsigned oldSize = fNumBuckets;
+  TableEntry** oldBuckets = fBuckets;
+
+  // Create the new sized table:
+  fNumBuckets *= 4;
+  fBuckets = new TableEntry*[fNumBuckets];
+  for (unsigned i = 0; i < fNumBuckets; ++i) {
+    fBuckets[i] = NULL;
+  }
+  fRebuildSize *= 4;
+  fDownShift -= 2;
+  fMask = (fMask<<2)|0x3;
+
+  // Rehash the existing entries into the new table:
+  for (TableEntry** oldChainPtr = oldBuckets; oldSize > 0;
+       --oldSize, ++oldChainPtr) {
+    for (TableEntry* hPtr = *oldChainPtr; hPtr != NULL;
+	 hPtr = *oldChainPtr) {
+      *oldChainPtr = hPtr->fNext;
+
+      unsigned index = hashIndexFromKey(hPtr->key);
+
+      hPtr->fNext = fBuckets[index];
+      fBuckets[index] = hPtr;
+    }
+  }
+
+  // Free the old bucket array, if it was dynamically allocated:
+  if (oldBuckets != fStaticBuckets) delete[] oldBuckets;
+}
+
+unsigned BasicHashTable::hashIndexFromKey(char const* key) const {
+  unsigned result = 0;
+
+  if (fKeyType == STRING_HASH_KEYS) {
+    while (1) {
+      char c = *key++;
+      if (c == 0) break;
+      result += (result<<3) + (unsigned)c;
+    }
+    result &= fMask;
+  } else if (fKeyType == ONE_WORD_HASH_KEYS) {
+    result = randomIndex((uintptr_t)key);
+  } else {
+    unsigned* k = (unsigned*)key;
+    uintptr_t sum = 0;
+    for (int i = 0; i < fKeyType; ++i) {
+      sum += k[i];
+    }
+    result = randomIndex(sum);
+  }
+
+  return result;
+}
diff --git a/BasicUsageEnvironment/BasicTaskScheduler.cpp b/BasicUsageEnvironment/BasicTaskScheduler.cpp
new file mode 100644
index 0000000..3634b8b
--- /dev/null
+++ b/BasicUsageEnvironment/BasicTaskScheduler.cpp
@@ -0,0 +1,256 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Basic Usage Environment: for a simple, non-scripted, console application
+// Implementation
+
+
+#include "BasicUsageEnvironment.hh"
+#include "HandlerSet.hh"
+#include <stdio.h>
+#if defined(_QNX4)
+#include <sys/select.h>
+#include <unix.h>
+#endif
+
+////////// BasicTaskScheduler //////////
+
+BasicTaskScheduler* BasicTaskScheduler::createNew(unsigned maxSchedulerGranularity) {
+	return new BasicTaskScheduler(maxSchedulerGranularity);
+}
+
+BasicTaskScheduler::BasicTaskScheduler(unsigned maxSchedulerGranularity)
+  : fMaxSchedulerGranularity(maxSchedulerGranularity), fMaxNumSockets(0)
+#if defined(__WIN32__) || defined(_WIN32)
+  , fDummySocketNum(-1)
+#endif
+{
+  FD_ZERO(&fReadSet);
+  FD_ZERO(&fWriteSet);
+  FD_ZERO(&fExceptionSet);
+
+  if (maxSchedulerGranularity > 0) schedulerTickTask(); // ensures that we handle events frequently
+}
+
+BasicTaskScheduler::~BasicTaskScheduler() {
+#if defined(__WIN32__) || defined(_WIN32)
+  if (fDummySocketNum >= 0) closeSocket(fDummySocketNum);
+#endif
+}
+
+void BasicTaskScheduler::schedulerTickTask(void* clientData) {
+  ((BasicTaskScheduler*)clientData)->schedulerTickTask();
+}
+
+void BasicTaskScheduler::schedulerTickTask() {
+  scheduleDelayedTask(fMaxSchedulerGranularity, schedulerTickTask, this);
+}
+
+#ifndef MILLION
+#define MILLION 1000000
+#endif
+
+void BasicTaskScheduler::SingleStep(unsigned maxDelayTime) {
+  fd_set readSet = fReadSet; // make a copy for this select() call
+  fd_set writeSet = fWriteSet; // ditto
+  fd_set exceptionSet = fExceptionSet; // ditto
+
+  DelayInterval const& timeToDelay = fDelayQueue.timeToNextAlarm();
+  struct timeval tv_timeToDelay;
+  tv_timeToDelay.tv_sec = timeToDelay.seconds();
+  tv_timeToDelay.tv_usec = timeToDelay.useconds();
+  // Very large "tv_sec" values cause select() to fail.
+  // Don't make it any larger than 1 million seconds (11.5 days)
+  const long MAX_TV_SEC = MILLION;
+  if (tv_timeToDelay.tv_sec > MAX_TV_SEC) {
+    tv_timeToDelay.tv_sec = MAX_TV_SEC;
+  }
+  // Also check our "maxDelayTime" parameter (if it's > 0):
+  if (maxDelayTime > 0 &&
+      (tv_timeToDelay.tv_sec > (long)maxDelayTime/MILLION ||
+       (tv_timeToDelay.tv_sec == (long)maxDelayTime/MILLION &&
+	tv_timeToDelay.tv_usec > (long)maxDelayTime%MILLION))) {
+    tv_timeToDelay.tv_sec = maxDelayTime/MILLION;
+    tv_timeToDelay.tv_usec = maxDelayTime%MILLION;
+  }
+
+  int selectResult = select(fMaxNumSockets, &readSet, &writeSet, &exceptionSet, &tv_timeToDelay);
+  if (selectResult < 0) {
+#if defined(__WIN32__) || defined(_WIN32)
+    int err = WSAGetLastError();
+    // For some unknown reason, select() in Windoze sometimes fails with WSAEINVAL if
+    // it was called with no entries set in "readSet".  If this happens, ignore it:
+    if (err == WSAEINVAL && readSet.fd_count == 0) {
+      err = EINTR;
+      // To stop this from happening again, create a dummy socket:
+      if (fDummySocketNum >= 0) closeSocket(fDummySocketNum);
+      fDummySocketNum = socket(AF_INET, SOCK_DGRAM, 0);
+      FD_SET((unsigned)fDummySocketNum, &fReadSet);
+    }
+    if (err != EINTR) {
+#else
+    if (errno != EINTR && errno != EAGAIN) {
+#endif
+	// Unexpected error - treat this as fatal:
+#if !defined(_WIN32_WCE)
+	perror("BasicTaskScheduler::SingleStep(): select() fails");
+	// Because this failure is often "Bad file descriptor" - which is caused by an invalid socket number (i.e., a socket number
+	// that had already been closed) being used in "select()" - we print out the sockets that were being used in "select()",
+	// to assist in debugging:
+	fprintf(stderr, "socket numbers used in the select() call:");
+	for (int i = 0; i < 10000; ++i) {
+	  if (FD_ISSET(i, &fReadSet) || FD_ISSET(i, &fWriteSet) || FD_ISSET(i, &fExceptionSet)) {
+	    fprintf(stderr, " %d(", i);
+	    if (FD_ISSET(i, &fReadSet)) fprintf(stderr, "r");
+	    if (FD_ISSET(i, &fWriteSet)) fprintf(stderr, "w");
+	    if (FD_ISSET(i, &fExceptionSet)) fprintf(stderr, "e");
+	    fprintf(stderr, ")");
+	  }
+	}
+	fprintf(stderr, "\n");
+#endif
+	internalError();
+      }
+  }
+
+  // Call the handler function for one readable socket:
+  HandlerIterator iter(*fHandlers);
+  HandlerDescriptor* handler;
+  // To ensure forward progress through the handlers, begin past the last
+  // socket number that we handled:
+  if (fLastHandledSocketNum >= 0) {
+    while ((handler = iter.next()) != NULL) {
+      if (handler->socketNum == fLastHandledSocketNum) break;
+    }
+    if (handler == NULL) {
+      fLastHandledSocketNum = -1;
+      iter.reset(); // start from the beginning instead
+    }
+  }
+  while ((handler = iter.next()) != NULL) {
+    int sock = handler->socketNum; // alias
+    int resultConditionSet = 0;
+    if (FD_ISSET(sock, &readSet) && FD_ISSET(sock, &fReadSet)/*sanity check*/) resultConditionSet |= SOCKET_READABLE;
+    if (FD_ISSET(sock, &writeSet) && FD_ISSET(sock, &fWriteSet)/*sanity check*/) resultConditionSet |= SOCKET_WRITABLE;
+    if (FD_ISSET(sock, &exceptionSet) && FD_ISSET(sock, &fExceptionSet)/*sanity check*/) resultConditionSet |= SOCKET_EXCEPTION;
+    if ((resultConditionSet&handler->conditionSet) != 0 && handler->handlerProc != NULL) {
+      fLastHandledSocketNum = sock;
+          // Note: we set "fLastHandledSocketNum" before calling the handler,
+          // in case the handler calls "doEventLoop()" reentrantly.
+      (*handler->handlerProc)(handler->clientData, resultConditionSet);
+      break;
+    }
+  }
+  if (handler == NULL && fLastHandledSocketNum >= 0) {
+    // We didn't call a handler, but we didn't get to check all of them,
+    // so try again from the beginning:
+    iter.reset();
+    while ((handler = iter.next()) != NULL) {
+      int sock = handler->socketNum; // alias
+      int resultConditionSet = 0;
+      if (FD_ISSET(sock, &readSet) && FD_ISSET(sock, &fReadSet)/*sanity check*/) resultConditionSet |= SOCKET_READABLE;
+      if (FD_ISSET(sock, &writeSet) && FD_ISSET(sock, &fWriteSet)/*sanity check*/) resultConditionSet |= SOCKET_WRITABLE;
+      if (FD_ISSET(sock, &exceptionSet) && FD_ISSET(sock, &fExceptionSet)/*sanity check*/) resultConditionSet |= SOCKET_EXCEPTION;
+      if ((resultConditionSet&handler->conditionSet) != 0 && handler->handlerProc != NULL) {
+	fLastHandledSocketNum = sock;
+	    // Note: we set "fLastHandledSocketNum" before calling the handler,
+            // in case the handler calls "doEventLoop()" reentrantly.
+	(*handler->handlerProc)(handler->clientData, resultConditionSet);
+	break;
+      }
+    }
+    if (handler == NULL) fLastHandledSocketNum = -1;//because we didn't call a handler
+  }
+
+  // Also handle any newly-triggered event (Note that we do this *after* calling a socket handler,
+  // in case the triggered event handler modifies The set of readable sockets.)
+  if (fTriggersAwaitingHandling != 0) {
+    if (fTriggersAwaitingHandling == fLastUsedTriggerMask) {
+      // Common-case optimization for a single event trigger:
+      fTriggersAwaitingHandling &=~ fLastUsedTriggerMask;
+      if (fTriggeredEventHandlers[fLastUsedTriggerNum] != NULL) {
+	(*fTriggeredEventHandlers[fLastUsedTriggerNum])(fTriggeredEventClientDatas[fLastUsedTriggerNum]);
+      }
+    } else {
+      // Look for an event trigger that needs handling (making sure that we make forward progress through all possible triggers):
+      unsigned i = fLastUsedTriggerNum;
+      EventTriggerId mask = fLastUsedTriggerMask;
+
+      do {
+	i = (i+1)%MAX_NUM_EVENT_TRIGGERS;
+	mask >>= 1;
+	if (mask == 0) mask = 0x80000000;
+
+	if ((fTriggersAwaitingHandling&mask) != 0) {
+	  fTriggersAwaitingHandling &=~ mask;
+	  if (fTriggeredEventHandlers[i] != NULL) {
+	    (*fTriggeredEventHandlers[i])(fTriggeredEventClientDatas[i]);
+	  }
+
+	  fLastUsedTriggerMask = mask;
+	  fLastUsedTriggerNum = i;
+	  break;
+	}
+      } while (i != fLastUsedTriggerNum);
+    }
+  }
+
+  // Also handle any delayed event that may have come due.
+  fDelayQueue.handleAlarm();
+}
+
+void BasicTaskScheduler
+  ::setBackgroundHandling(int socketNum, int conditionSet, BackgroundHandlerProc* handlerProc, void* clientData) {
+  if (socketNum < 0) return;
+#if !defined(__WIN32__) && !defined(_WIN32) && defined(FD_SETSIZE)
+  if (socketNum >= (int)(FD_SETSIZE)) return;
+#endif
+  FD_CLR((unsigned)socketNum, &fReadSet);
+  FD_CLR((unsigned)socketNum, &fWriteSet);
+  FD_CLR((unsigned)socketNum, &fExceptionSet);
+  if (conditionSet == 0) {
+    fHandlers->clearHandler(socketNum);
+    if (socketNum+1 == fMaxNumSockets) {
+      --fMaxNumSockets;
+    }
+  } else {
+    fHandlers->assignHandler(socketNum, conditionSet, handlerProc, clientData);
+    if (socketNum+1 > fMaxNumSockets) {
+      fMaxNumSockets = socketNum+1;
+    }
+    if (conditionSet&SOCKET_READABLE) FD_SET((unsigned)socketNum, &fReadSet);
+    if (conditionSet&SOCKET_WRITABLE) FD_SET((unsigned)socketNum, &fWriteSet);
+    if (conditionSet&SOCKET_EXCEPTION) FD_SET((unsigned)socketNum, &fExceptionSet);
+  }
+}
+
+void BasicTaskScheduler::moveSocketHandling(int oldSocketNum, int newSocketNum) {
+  if (oldSocketNum < 0 || newSocketNum < 0) return; // sanity check
+#if !defined(__WIN32__) && !defined(_WIN32) && defined(FD_SETSIZE)
+  if (oldSocketNum >= (int)(FD_SETSIZE) || newSocketNum >= (int)(FD_SETSIZE)) return; // sanity check
+#endif
+  if (FD_ISSET(oldSocketNum, &fReadSet)) {FD_CLR((unsigned)oldSocketNum, &fReadSet); FD_SET((unsigned)newSocketNum, &fReadSet);}
+  if (FD_ISSET(oldSocketNum, &fWriteSet)) {FD_CLR((unsigned)oldSocketNum, &fWriteSet); FD_SET((unsigned)newSocketNum, &fWriteSet);}
+  if (FD_ISSET(oldSocketNum, &fExceptionSet)) {FD_CLR((unsigned)oldSocketNum, &fExceptionSet); FD_SET((unsigned)newSocketNum, &fExceptionSet);}
+  fHandlers->moveHandler(oldSocketNum, newSocketNum);
+
+  if (oldSocketNum+1 == fMaxNumSockets) {
+    --fMaxNumSockets;
+  }
+  if (newSocketNum+1 > fMaxNumSockets) {
+    fMaxNumSockets = newSocketNum+1;
+  }
+}
diff --git a/BasicUsageEnvironment/BasicTaskScheduler0.cpp b/BasicUsageEnvironment/BasicTaskScheduler0.cpp
new file mode 100644
index 0000000..9cd352e
--- /dev/null
+++ b/BasicUsageEnvironment/BasicTaskScheduler0.cpp
@@ -0,0 +1,235 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Basic Usage Environment: for a simple, non-scripted, console application
+// Implementation
+
+#include "BasicUsageEnvironment0.hh"
+#include "HandlerSet.hh"
+
+////////// A subclass of DelayQueueEntry,
+//////////     used to implement BasicTaskScheduler0::scheduleDelayedTask()
+
+class AlarmHandler: public DelayQueueEntry {
+public:
+  AlarmHandler(TaskFunc* proc, void* clientData, DelayInterval timeToDelay)
+    : DelayQueueEntry(timeToDelay), fProc(proc), fClientData(clientData) {
+  }
+
+private: // redefined virtual functions
+  virtual void handleTimeout() {
+    (*fProc)(fClientData);
+    DelayQueueEntry::handleTimeout();
+  }
+
+private:
+  TaskFunc* fProc;
+  void* fClientData;
+};
+
+
+////////// BasicTaskScheduler0 //////////
+
+BasicTaskScheduler0::BasicTaskScheduler0()
+  : fLastHandledSocketNum(-1), fTriggersAwaitingHandling(0), fLastUsedTriggerMask(1), fLastUsedTriggerNum(MAX_NUM_EVENT_TRIGGERS-1) {
+  fHandlers = new HandlerSet;
+  for (unsigned i = 0; i < MAX_NUM_EVENT_TRIGGERS; ++i) {
+    fTriggeredEventHandlers[i] = NULL;
+    fTriggeredEventClientDatas[i] = NULL;
+  }
+}
+
+BasicTaskScheduler0::~BasicTaskScheduler0() {
+  delete fHandlers;
+}
+
+TaskToken BasicTaskScheduler0::scheduleDelayedTask(int64_t microseconds,
+						 TaskFunc* proc,
+						 void* clientData) {
+  if (microseconds < 0) microseconds = 0;
+  DelayInterval timeToDelay((long)(microseconds/1000000), (long)(microseconds%1000000));
+  AlarmHandler* alarmHandler = new AlarmHandler(proc, clientData, timeToDelay);
+  fDelayQueue.addEntry(alarmHandler);
+
+  return (void*)(alarmHandler->token());
+}
+
+void BasicTaskScheduler0::unscheduleDelayedTask(TaskToken& prevTask) {
+  DelayQueueEntry* alarmHandler = fDelayQueue.removeEntry((intptr_t)prevTask);
+  prevTask = NULL;
+  delete alarmHandler;
+}
+
+void BasicTaskScheduler0::doEventLoop(char volatile* watchVariable) {
+  // Repeatedly loop, handling readble sockets and timed events:
+  while (1) {
+    if (watchVariable != NULL && *watchVariable != 0) break;
+    SingleStep();
+  }
+}
+
+EventTriggerId BasicTaskScheduler0::createEventTrigger(TaskFunc* eventHandlerProc) {
+  unsigned i = fLastUsedTriggerNum;
+  EventTriggerId mask = fLastUsedTriggerMask;
+
+  do {
+    i = (i+1)%MAX_NUM_EVENT_TRIGGERS;
+    mask >>= 1;
+    if (mask == 0) mask = 0x80000000;
+
+    if (fTriggeredEventHandlers[i] == NULL) {
+      // This trigger number is free; use it:
+      fTriggeredEventHandlers[i] = eventHandlerProc;
+      fTriggeredEventClientDatas[i] = NULL; // sanity
+
+      fLastUsedTriggerMask = mask;
+      fLastUsedTriggerNum = i;
+
+      return mask;
+    }
+  } while (i != fLastUsedTriggerNum);
+
+  // All available event triggers are allocated; return 0 instead:
+  return 0;
+}
+
+void BasicTaskScheduler0::deleteEventTrigger(EventTriggerId eventTriggerId) {
+  fTriggersAwaitingHandling &=~ eventTriggerId;
+
+  if (eventTriggerId == fLastUsedTriggerMask) { // common-case optimization:
+    fTriggeredEventHandlers[fLastUsedTriggerNum] = NULL;
+    fTriggeredEventClientDatas[fLastUsedTriggerNum] = NULL;
+  } else {
+    // "eventTriggerId" should have just one bit set.
+    // However, we do the reasonable thing if the user happened to 'or' together two or more "EventTriggerId"s:
+    EventTriggerId mask = 0x80000000;
+    for (unsigned i = 0; i < MAX_NUM_EVENT_TRIGGERS; ++i) {
+      if ((eventTriggerId&mask) != 0) {
+	fTriggeredEventHandlers[i] = NULL;
+	fTriggeredEventClientDatas[i] = NULL;
+      }
+      mask >>= 1;
+    }
+  }
+}
+
+void BasicTaskScheduler0::triggerEvent(EventTriggerId eventTriggerId, void* clientData) {
+  // First, record the "clientData".  (Note that we allow "eventTriggerId" to be a combination of bits for multiple events.)
+  EventTriggerId mask = 0x80000000;
+  for (unsigned i = 0; i < MAX_NUM_EVENT_TRIGGERS; ++i) {
+    if ((eventTriggerId&mask) != 0) {
+      fTriggeredEventClientDatas[i] = clientData;
+    }
+    mask >>= 1;
+  }
+
+  // Then, note this event as being ready to be handled.
+  // (Note that because this function (unlike others in the library) can be called from an external thread, we do this last, to
+  //  reduce the risk of a race condition.)
+  fTriggersAwaitingHandling |= eventTriggerId;
+}
+
+
+////////// HandlerSet (etc.) implementation //////////
+
+HandlerDescriptor::HandlerDescriptor(HandlerDescriptor* nextHandler)
+  : conditionSet(0), handlerProc(NULL) {
+  // Link this descriptor into a doubly-linked list:
+  if (nextHandler == this) { // initialization
+    fNextHandler = fPrevHandler = this;
+  } else {
+    fNextHandler = nextHandler;
+    fPrevHandler = nextHandler->fPrevHandler;
+    nextHandler->fPrevHandler = this;
+    fPrevHandler->fNextHandler = this;
+  }
+}
+
+HandlerDescriptor::~HandlerDescriptor() {
+  // Unlink this descriptor from a doubly-linked list:
+  fNextHandler->fPrevHandler = fPrevHandler;
+  fPrevHandler->fNextHandler = fNextHandler;
+}
+
+HandlerSet::HandlerSet()
+  : fHandlers(&fHandlers) {
+  fHandlers.socketNum = -1; // shouldn't ever get looked at, but in case...
+}
+
+HandlerSet::~HandlerSet() {
+  // Delete each handler descriptor:
+  while (fHandlers.fNextHandler != &fHandlers) {
+    delete fHandlers.fNextHandler; // changes fHandlers->fNextHandler
+  }
+}
+
+void HandlerSet
+::assignHandler(int socketNum, int conditionSet, TaskScheduler::BackgroundHandlerProc* handlerProc, void* clientData) {
+  // First, see if there's already a handler for this socket:
+  HandlerDescriptor* handler = lookupHandler(socketNum);
+  if (handler == NULL) { // No existing handler, so create a new descr:
+    handler = new HandlerDescriptor(fHandlers.fNextHandler);
+    handler->socketNum = socketNum;
+  }
+
+  handler->conditionSet = conditionSet;
+  handler->handlerProc = handlerProc;
+  handler->clientData = clientData;
+}
+
+void HandlerSet::clearHandler(int socketNum) {
+  HandlerDescriptor* handler = lookupHandler(socketNum);
+  delete handler;
+}
+
+void HandlerSet::moveHandler(int oldSocketNum, int newSocketNum) {
+  HandlerDescriptor* handler = lookupHandler(oldSocketNum);
+  if (handler != NULL) {
+    handler->socketNum = newSocketNum;
+  }
+}
+
+HandlerDescriptor* HandlerSet::lookupHandler(int socketNum) {
+  HandlerDescriptor* handler;
+  HandlerIterator iter(*this);
+  while ((handler = iter.next()) != NULL) {
+    if (handler->socketNum == socketNum) break;
+  }
+  return handler;
+}
+
+HandlerIterator::HandlerIterator(HandlerSet& handlerSet)
+  : fOurSet(handlerSet) {
+  reset();
+}
+
+HandlerIterator::~HandlerIterator() {
+}
+
+void HandlerIterator::reset() {
+  fNextPtr = fOurSet.fHandlers.fNextHandler;
+}
+
+HandlerDescriptor* HandlerIterator::next() {
+  HandlerDescriptor* result = fNextPtr;
+  if (result == &fOurSet.fHandlers) { // no more
+    result = NULL;
+  } else {
+    fNextPtr = fNextPtr->fNextHandler;
+  }
+
+  return result;
+}
diff --git a/BasicUsageEnvironment/BasicUsageEnvironment.cpp b/BasicUsageEnvironment/BasicUsageEnvironment.cpp
new file mode 100644
index 0000000..698ce00
--- /dev/null
+++ b/BasicUsageEnvironment/BasicUsageEnvironment.cpp
@@ -0,0 +1,80 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Basic Usage Environment: for a simple, non-scripted, console application
+// Implementation
+
+#include "BasicUsageEnvironment.hh"
+#include <stdio.h>
+
+////////// BasicUsageEnvironment //////////
+
+#if defined(__WIN32__) || defined(_WIN32)
+extern "C" int initializeWinsockIfNecessary();
+#endif
+
+BasicUsageEnvironment::BasicUsageEnvironment(TaskScheduler& taskScheduler)
+: BasicUsageEnvironment0(taskScheduler) {
+#if defined(__WIN32__) || defined(_WIN32)
+  if (!initializeWinsockIfNecessary()) {
+    setResultErrMsg("Failed to initialize 'winsock': ");
+    reportBackgroundError();
+    internalError();
+  }
+#endif
+}
+
+BasicUsageEnvironment::~BasicUsageEnvironment() {
+}
+
+BasicUsageEnvironment*
+BasicUsageEnvironment::createNew(TaskScheduler& taskScheduler) {
+  return new BasicUsageEnvironment(taskScheduler);
+}
+
+int BasicUsageEnvironment::getErrno() const {
+#if defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_WCE)
+  return WSAGetLastError();
+#else
+  return errno;
+#endif
+}
+
+UsageEnvironment& BasicUsageEnvironment::operator<<(char const* str) {
+  if (str == NULL) str = "(NULL)"; // sanity check
+  fprintf(stderr, "%s", str);
+  return *this;
+}
+
+UsageEnvironment& BasicUsageEnvironment::operator<<(int i) {
+  fprintf(stderr, "%d", i);
+  return *this;
+}
+
+UsageEnvironment& BasicUsageEnvironment::operator<<(unsigned u) {
+  fprintf(stderr, "%u", u);
+  return *this;
+}
+
+UsageEnvironment& BasicUsageEnvironment::operator<<(double d) {
+  fprintf(stderr, "%f", d);
+  return *this;
+}
+
+UsageEnvironment& BasicUsageEnvironment::operator<<(void* p) {
+  fprintf(stderr, "%p", p);
+  return *this;
+}
diff --git a/BasicUsageEnvironment/BasicUsageEnvironment0.cpp b/BasicUsageEnvironment/BasicUsageEnvironment0.cpp
new file mode 100644
index 0000000..21163d3
--- /dev/null
+++ b/BasicUsageEnvironment/BasicUsageEnvironment0.cpp
@@ -0,0 +1,108 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Basic Usage Environment: for a simple, non-scripted, console application
+// Implementation
+
+#include "BasicUsageEnvironment0.hh"
+#include <stdio.h>
+#if defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_WCE)
+#define snprintf _snprintf
+#endif
+
+
+////////// BasicUsageEnvironment //////////
+
+BasicUsageEnvironment0::BasicUsageEnvironment0(TaskScheduler& taskScheduler)
+  : UsageEnvironment(taskScheduler),
+    fBufferMaxSize(RESULT_MSG_BUFFER_MAX) {
+  reset();
+}
+
+BasicUsageEnvironment0::~BasicUsageEnvironment0() {
+}
+
+void BasicUsageEnvironment0::reset() {
+  fCurBufferSize = 0;
+  fResultMsgBuffer[fCurBufferSize] = '\0';
+}
+
+
+// Implementation of virtual functions:
+
+char const* BasicUsageEnvironment0::getResultMsg() const {
+  return fResultMsgBuffer;
+}
+
+void BasicUsageEnvironment0::setResultMsg(MsgString msg) {
+  reset();
+  appendToResultMsg(msg);
+}
+
+void BasicUsageEnvironment0::setResultMsg(MsgString msg1, MsgString msg2) {
+  setResultMsg(msg1);
+  appendToResultMsg(msg2);
+}
+
+void BasicUsageEnvironment0::setResultMsg(MsgString msg1, MsgString msg2,
+				       MsgString msg3) {
+  setResultMsg(msg1, msg2);
+  appendToResultMsg(msg3);
+}
+
+void BasicUsageEnvironment0::setResultErrMsg(MsgString msg, int err) {
+  setResultMsg(msg);
+
+  if (err == 0) err = getErrno();
+#if defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_WCE)
+#ifndef _UNICODE
+  char errMsg[RESULT_MSG_BUFFER_MAX] = "\0";
+  if (0 != FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, 0, errMsg, sizeof(errMsg)/sizeof(errMsg[0]), NULL)) {
+    // Remove all trailing '\r', '\n' and '.'
+    for (char* p = errMsg + strlen(errMsg); p != errMsg && (*p == '\r' || *p == '\n' || *p == '.' || *p == '\0'); --p) {
+      *p = '\0';
+    }
+  } else
+    snprintf(errMsg, sizeof(errMsg)/sizeof(errMsg[0]), "error %d", err);
+  appendToResultMsg(errMsg);
+#endif
+#else
+  appendToResultMsg(strerror(err));
+#endif
+}
+
+
+
+
+void BasicUsageEnvironment0::appendToResultMsg(MsgString msg) {
+  char* curPtr = &fResultMsgBuffer[fCurBufferSize];
+  unsigned spaceAvailable = fBufferMaxSize - fCurBufferSize;
+  unsigned msgLength = strlen(msg);
+
+  // Copy only enough of "msg" as will fit:
+  if (msgLength > spaceAvailable-1) {
+    msgLength = spaceAvailable-1;
+  }
+
+  memmove(curPtr, (char*)msg, msgLength);
+  fCurBufferSize += msgLength;
+  fResultMsgBuffer[fCurBufferSize] = '\0';
+}
+
+void BasicUsageEnvironment0::reportBackgroundError() {
+  fputs(getResultMsg(), stderr);
+}
+
diff --git a/BasicUsageEnvironment/COPYING b/BasicUsageEnvironment/COPYING
new file mode 120000
index 0000000..012065c
--- /dev/null
+++ b/BasicUsageEnvironment/COPYING
@@ -0,0 +1 @@
+../COPYING
\ No newline at end of file
diff --git a/BasicUsageEnvironment/COPYING.LESSER b/BasicUsageEnvironment/COPYING.LESSER
new file mode 120000
index 0000000..ce9a3ce
--- /dev/null
+++ b/BasicUsageEnvironment/COPYING.LESSER
@@ -0,0 +1 @@
+../COPYING.LESSER
\ No newline at end of file
diff --git a/BasicUsageEnvironment/DelayQueue.cpp b/BasicUsageEnvironment/DelayQueue.cpp
new file mode 100644
index 0000000..0af3b9d
--- /dev/null
+++ b/BasicUsageEnvironment/DelayQueue.cpp
@@ -0,0 +1,233 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+//	Help by Carlo Bonamico to get working for Windows
+// Delay queue
+// Implementation
+
+#include "DelayQueue.hh"
+#include "GroupsockHelper.hh"
+
+static const int MILLION = 1000000;
+
+///// Timeval /////
+
+int Timeval::operator>=(const Timeval& arg2) const {
+  return seconds() > arg2.seconds()
+    || (seconds() == arg2.seconds()
+	&& useconds() >= arg2.useconds());
+}
+
+void Timeval::operator+=(const DelayInterval& arg2) {
+  secs() += arg2.seconds(); usecs() += arg2.useconds();
+  if (useconds() >= MILLION) {
+    usecs() -= MILLION;
+    ++secs();
+  }
+}
+
+void Timeval::operator-=(const DelayInterval& arg2) {
+  secs() -= arg2.seconds(); usecs() -= arg2.useconds();
+  if ((int)useconds() < 0) {
+    usecs() += MILLION;
+    --secs();
+  }
+  if ((int)seconds() < 0)
+    secs() = usecs() = 0;
+
+}
+
+DelayInterval operator-(const Timeval& arg1, const Timeval& arg2) {
+  time_base_seconds secs = arg1.seconds() - arg2.seconds();
+  time_base_seconds usecs = arg1.useconds() - arg2.useconds();
+
+  if ((int)usecs < 0) {
+    usecs += MILLION;
+    --secs;
+  }
+  if ((int)secs < 0)
+    return DELAY_ZERO;
+  else
+    return DelayInterval(secs, usecs);
+}
+
+
+///// DelayInterval /////
+
+DelayInterval operator*(short arg1, const DelayInterval& arg2) {
+  time_base_seconds result_seconds = arg1*arg2.seconds();
+  time_base_seconds result_useconds = arg1*arg2.useconds();
+
+  time_base_seconds carry = result_useconds/MILLION;
+  result_useconds -= carry*MILLION;
+  result_seconds += carry;
+
+  return DelayInterval(result_seconds, result_useconds);
+}
+
+#ifndef INT_MAX
+#define INT_MAX	0x7FFFFFFF
+#endif
+const DelayInterval DELAY_ZERO(0, 0);
+const DelayInterval DELAY_SECOND(1, 0);
+const DelayInterval DELAY_MINUTE = 60*DELAY_SECOND;
+const DelayInterval DELAY_HOUR = 60*DELAY_MINUTE;
+const DelayInterval DELAY_DAY = 24*DELAY_HOUR;
+const DelayInterval ETERNITY(INT_MAX, MILLION-1);
+// used internally to make the implementation work
+
+
+///// DelayQueueEntry /////
+
+intptr_t DelayQueueEntry::tokenCounter = 0;
+
+DelayQueueEntry::DelayQueueEntry(DelayInterval delay)
+  : fDeltaTimeRemaining(delay) {
+  fNext = fPrev = this;
+  fToken = ++tokenCounter;
+}
+
+DelayQueueEntry::~DelayQueueEntry() {
+}
+
+void DelayQueueEntry::handleTimeout() {
+  delete this;
+}
+
+
+///// DelayQueue /////
+
+DelayQueue::DelayQueue()
+  : DelayQueueEntry(ETERNITY) {
+  fLastSyncTime = TimeNow();
+}
+
+DelayQueue::~DelayQueue() {
+  while (fNext != this) {
+    DelayQueueEntry* entryToRemove = fNext;
+    removeEntry(entryToRemove);
+    delete entryToRemove;
+  }
+}
+
+void DelayQueue::addEntry(DelayQueueEntry* newEntry) {
+  synchronize();
+
+  DelayQueueEntry* cur = head();
+  while (newEntry->fDeltaTimeRemaining >= cur->fDeltaTimeRemaining) {
+    newEntry->fDeltaTimeRemaining -= cur->fDeltaTimeRemaining;
+    cur = cur->fNext;
+  }
+
+  cur->fDeltaTimeRemaining -= newEntry->fDeltaTimeRemaining;
+
+  // Add "newEntry" to the queue, just before "cur":
+  newEntry->fNext = cur;
+  newEntry->fPrev = cur->fPrev;
+  cur->fPrev = newEntry->fPrev->fNext = newEntry;
+}
+
+void DelayQueue::updateEntry(DelayQueueEntry* entry, DelayInterval newDelay) {
+  if (entry == NULL) return;
+
+  removeEntry(entry);
+  entry->fDeltaTimeRemaining = newDelay;
+  addEntry(entry);
+}
+
+void DelayQueue::updateEntry(intptr_t tokenToFind, DelayInterval newDelay) {
+  DelayQueueEntry* entry = findEntryByToken(tokenToFind);
+  updateEntry(entry, newDelay);
+}
+
+void DelayQueue::removeEntry(DelayQueueEntry* entry) {
+  if (entry == NULL || entry->fNext == NULL) return;
+
+  entry->fNext->fDeltaTimeRemaining += entry->fDeltaTimeRemaining;
+  entry->fPrev->fNext = entry->fNext;
+  entry->fNext->fPrev = entry->fPrev;
+  entry->fNext = entry->fPrev = NULL;
+  // in case we should try to remove it again
+}
+
+DelayQueueEntry* DelayQueue::removeEntry(intptr_t tokenToFind) {
+  DelayQueueEntry* entry = findEntryByToken(tokenToFind);
+  removeEntry(entry);
+  return entry;
+}
+
+DelayInterval const& DelayQueue::timeToNextAlarm() {
+  if (head()->fDeltaTimeRemaining == DELAY_ZERO) return DELAY_ZERO; // a common case
+
+  synchronize();
+  return head()->fDeltaTimeRemaining;
+}
+
+void DelayQueue::handleAlarm() {
+  if (head()->fDeltaTimeRemaining != DELAY_ZERO) synchronize();
+
+  if (head()->fDeltaTimeRemaining == DELAY_ZERO) {
+    // This event is due to be handled:
+    DelayQueueEntry* toRemove = head();
+    removeEntry(toRemove); // do this first, in case handler accesses queue
+
+    toRemove->handleTimeout();
+  }
+}
+
+DelayQueueEntry* DelayQueue::findEntryByToken(intptr_t tokenToFind) {
+  DelayQueueEntry* cur = head();
+  while (cur != this) {
+    if (cur->token() == tokenToFind) return cur;
+    cur = cur->fNext;
+  }
+
+  return NULL;
+}
+
+void DelayQueue::synchronize() {
+  // First, figure out how much time has elapsed since the last sync:
+  _EventTime timeNow = TimeNow();
+  if (timeNow < fLastSyncTime) {
+    // The system clock has apparently gone back in time; reset our sync time and return:
+    fLastSyncTime  = timeNow;
+    return;
+  }
+  DelayInterval timeSinceLastSync = timeNow - fLastSyncTime;
+  fLastSyncTime = timeNow;
+
+  // Then, adjust the delay queue for any entries whose time is up:
+  DelayQueueEntry* curEntry = head();
+  while (timeSinceLastSync >= curEntry->fDeltaTimeRemaining) {
+    timeSinceLastSync -= curEntry->fDeltaTimeRemaining;
+    curEntry->fDeltaTimeRemaining = DELAY_ZERO;
+    curEntry = curEntry->fNext;
+  }
+  curEntry->fDeltaTimeRemaining -= timeSinceLastSync;
+}
+
+
+///// _EventTime /////
+
+_EventTime TimeNow() {
+  struct timeval tvNow;
+
+  gettimeofday(&tvNow, NULL);
+
+  return _EventTime(tvNow.tv_sec, tvNow.tv_usec);
+}
+
+const _EventTime THE_END_OF_TIME(INT_MAX);
diff --git a/BasicUsageEnvironment/Makefile.head b/BasicUsageEnvironment/Makefile.head
new file mode 100644
index 0000000..f4e4414
--- /dev/null
+++ b/BasicUsageEnvironment/Makefile.head
@@ -0,0 +1,4 @@
+INCLUDES = -Iinclude -I../UsageEnvironment/include -I../groupsock/include
+PREFIX = /usr/local
+LIBDIR = $(PREFIX)/lib
+##### Change the following for your environment:
diff --git a/BasicUsageEnvironment/Makefile.tail b/BasicUsageEnvironment/Makefile.tail
new file mode 100644
index 0000000..5d04179
--- /dev/null
+++ b/BasicUsageEnvironment/Makefile.tail
@@ -0,0 +1,43 @@
+##### End of variables to change
+
+NAME = libBasicUsageEnvironment
+LIB_FILE = $(NAME).$(LIB_SUFFIX)
+ALL = $(LIB_FILE)
+all:	$(ALL)
+
+OBJS = BasicUsageEnvironment0.$(OBJ) BasicUsageEnvironment.$(OBJ) \
+	BasicTaskScheduler0.$(OBJ) BasicTaskScheduler.$(OBJ) \
+	DelayQueue.$(OBJ) BasicHashTable.$(OBJ)
+
+libBasicUsageEnvironment.$(LIB_SUFFIX): $(OBJS)
+	$(LIBRARY_LINK)$@ $(LIBRARY_LINK_OPTS) \
+		$(OBJS)
+
+.$(C).$(OBJ):
+	$(C_COMPILER) -c $(C_FLAGS) $<       
+
+.$(CPP).$(OBJ):
+	$(CPLUSPLUS_COMPILER) -c $(CPLUSPLUS_FLAGS) $<
+
+BasicUsageEnvironment0.$(CPP):	include/BasicUsageEnvironment0.hh
+include/BasicUsageEnvironment0.hh:	include/BasicUsageEnvironment_version.hh include/DelayQueue.hh
+BasicUsageEnvironment.$(CPP):	include/BasicUsageEnvironment.hh
+include/BasicUsageEnvironment.hh:	include/BasicUsageEnvironment0.hh
+BasicTaskScheduler0.$(CPP):	include/BasicUsageEnvironment0.hh include/HandlerSet.hh
+BasicTaskScheduler.$(CPP):	include/BasicUsageEnvironment.hh include/HandlerSet.hh
+DelayQueue.$(CPP):		include/DelayQueue.hh
+BasicHashTable.$(CPP):		include/BasicHashTable.hh
+
+clean:
+	-rm -rf *.$(OBJ) $(ALL) core *.core *~ include/*~
+
+install: install1 $(INSTALL2)
+install1: libBasicUsageEnvironment.$(LIB_SUFFIX)
+	  install -d $(DESTDIR)$(PREFIX)/include/BasicUsageEnvironment $(DESTDIR)$(LIBDIR)
+	  install -m 644 include/*.hh $(DESTDIR)$(PREFIX)/include/BasicUsageEnvironment
+	  install -m 644 libBasicUsageEnvironment.$(LIB_SUFFIX) $(DESTDIR)$(LIBDIR)
+install_shared_libraries: libBasicUsageEnvironment.$(LIB_SUFFIX)
+	  ln -fs $(NAME).$(LIB_SUFFIX) $(DESTDIR)$(LIBDIR)/$(NAME).$(SHORT_LIB_SUFFIX)
+	  ln -fs $(NAME).$(LIB_SUFFIX) $(DESTDIR)$(LIBDIR)/$(NAME).so
+
+##### Any additional, platform-specific rules come here:
diff --git a/BasicUsageEnvironment/include/BasicHashTable.hh b/BasicUsageEnvironment/include/BasicHashTable.hh
new file mode 100644
index 0000000..6174eab
--- /dev/null
+++ b/BasicUsageEnvironment/include/BasicHashTable.hh
@@ -0,0 +1,104 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Basic Hash Table implementation
+// C++ header
+
+#ifndef _BASIC_HASH_TABLE_HH
+#define _BASIC_HASH_TABLE_HH
+
+#ifndef _HASH_TABLE_HH
+#include "HashTable.hh"
+#endif
+#ifndef _NET_COMMON_H
+#include <NetCommon.h> // to ensure that "uintptr_t" is defined
+#endif
+
+// A simple hash table implementation, inspired by the hash table
+// implementation used in Tcl 7.6: <http://www.tcl.tk/>
+
+#define SMALL_HASH_TABLE_SIZE 4
+
+class BasicHashTable: public HashTable {
+private:
+	class TableEntry; // forward
+
+public:
+  BasicHashTable(int keyType);
+  virtual ~BasicHashTable();
+
+  // Used to iterate through the members of the table:
+  class Iterator; friend class Iterator; // to make Sun's C++ compiler happy
+  class Iterator: public HashTable::Iterator {
+  public:
+    Iterator(BasicHashTable const& table);
+
+  private: // implementation of inherited pure virtual functions
+    void* next(char const*& key); // returns 0 if none
+
+  private:
+    BasicHashTable const& fTable;
+    unsigned fNextIndex; // index of next bucket to be enumerated after this
+    TableEntry* fNextEntry; // next entry in the current bucket
+  };
+
+private: // implementation of inherited pure virtual functions
+  virtual void* Add(char const* key, void* value);
+  // Returns the old value if different, otherwise 0
+  virtual Boolean Remove(char const* key);
+  virtual void* Lookup(char const* key) const;
+  // Returns 0 if not found
+  virtual unsigned numEntries() const;
+
+private:
+  class TableEntry {
+  public:
+    TableEntry* fNext;
+    char const* key;
+    void* value;
+  };
+
+  TableEntry* lookupKey(char const* key, unsigned& index) const;
+    // returns entry matching "key", or NULL if none
+  Boolean keyMatches(char const* key1, char const* key2) const;
+    // used to implement "lookupKey()"
+
+  TableEntry* insertNewEntry(unsigned index, char const* key);
+    // creates a new entry, and inserts it in the table
+  void assignKey(TableEntry* entry, char const* key);
+    // used to implement "insertNewEntry()"
+
+  void deleteEntry(unsigned index, TableEntry* entry);
+  void deleteKey(TableEntry* entry);
+    // used to implement "deleteEntry()"
+
+  void rebuild(); // rebuilds the table as its size increases
+
+  unsigned hashIndexFromKey(char const* key) const;
+    // used to implement many of the routines above
+
+  unsigned randomIndex(uintptr_t i) const {
+    return (unsigned)(((i*1103515245) >> fDownShift) & fMask);
+  }
+
+private:
+  TableEntry** fBuckets; // pointer to bucket array
+  TableEntry* fStaticBuckets[SMALL_HASH_TABLE_SIZE];// used for small tables
+  unsigned fNumBuckets, fNumEntries, fRebuildSize, fDownShift, fMask;
+  int fKeyType;
+};
+
+#endif
diff --git a/BasicUsageEnvironment/include/BasicUsageEnvironment.hh b/BasicUsageEnvironment/include/BasicUsageEnvironment.hh
new file mode 100644
index 0000000..d01dc31
--- /dev/null
+++ b/BasicUsageEnvironment/include/BasicUsageEnvironment.hh
@@ -0,0 +1,86 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Basic Usage Environment: for a simple, non-scripted, console application
+// C++ header
+
+#ifndef _BASIC_USAGE_ENVIRONMENT_HH
+#define _BASIC_USAGE_ENVIRONMENT_HH
+
+#ifndef _BASIC_USAGE_ENVIRONMENT0_HH
+#include "BasicUsageEnvironment0.hh"
+#endif
+
+class BasicUsageEnvironment: public BasicUsageEnvironment0 {
+public:
+  static BasicUsageEnvironment* createNew(TaskScheduler& taskScheduler);
+
+  // redefined virtual functions:
+  virtual int getErrno() const;
+
+  virtual UsageEnvironment& operator<<(char const* str);
+  virtual UsageEnvironment& operator<<(int i);
+  virtual UsageEnvironment& operator<<(unsigned u);
+  virtual UsageEnvironment& operator<<(double d);
+  virtual UsageEnvironment& operator<<(void* p);
+
+protected:
+  BasicUsageEnvironment(TaskScheduler& taskScheduler);
+      // called only by "createNew()" (or subclass constructors)
+  virtual ~BasicUsageEnvironment();
+};
+
+
+class BasicTaskScheduler: public BasicTaskScheduler0 {
+public:
+  static BasicTaskScheduler* createNew(unsigned maxSchedulerGranularity = 10000/*microseconds*/);
+    // "maxSchedulerGranularity" (default value: 10 ms) specifies the maximum time that we wait (in "select()") before
+    // returning to the event loop to handle non-socket or non-timer-based events, such as 'triggered events'.
+    // You can change this is you wish (but only if you know what you're doing!), or set it to 0, to specify no such maximum time.
+    // (You should set it to 0 only if you know that you will not be using 'event triggers'.)
+  virtual ~BasicTaskScheduler();
+
+protected:
+  BasicTaskScheduler(unsigned maxSchedulerGranularity);
+      // called only by "createNew()"
+
+  static void schedulerTickTask(void* clientData);
+  void schedulerTickTask();
+
+protected:
+  // Redefined virtual functions:
+  virtual void SingleStep(unsigned maxDelayTime);
+
+  virtual void setBackgroundHandling(int socketNum, int conditionSet, BackgroundHandlerProc* handlerProc, void* clientData);
+  virtual void moveSocketHandling(int oldSocketNum, int newSocketNum);
+
+protected:
+  unsigned fMaxSchedulerGranularity;
+
+  // To implement background operations:
+  int fMaxNumSockets;
+  fd_set fReadSet;
+  fd_set fWriteSet;
+  fd_set fExceptionSet;
+
+private:
+#if defined(__WIN32__) || defined(_WIN32)
+  // Hack to work around a bug in Windows' "select()" implementation:
+  int fDummySocketNum;
+#endif
+};
+
+#endif
diff --git a/BasicUsageEnvironment/include/BasicUsageEnvironment0.hh b/BasicUsageEnvironment/include/BasicUsageEnvironment0.hh
new file mode 100644
index 0000000..c0ec3bd
--- /dev/null
+++ b/BasicUsageEnvironment/include/BasicUsageEnvironment0.hh
@@ -0,0 +1,114 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Basic Usage Environment: for a simple, non-scripted, console application
+// C++ header
+
+#ifndef _BASIC_USAGE_ENVIRONMENT0_HH
+#define _BASIC_USAGE_ENVIRONMENT0_HH
+
+#ifndef _BASICUSAGEENVIRONMENT_VERSION_HH
+#include "BasicUsageEnvironment_version.hh"
+#endif
+
+#ifndef _USAGE_ENVIRONMENT_HH
+#include "UsageEnvironment.hh"
+#endif
+
+#ifndef _DELAY_QUEUE_HH
+#include "DelayQueue.hh"
+#endif
+
+#define RESULT_MSG_BUFFER_MAX 1000
+
+// An abstract base class, useful for subclassing
+// (e.g., to redefine the implementation of "operator<<")
+class BasicUsageEnvironment0: public UsageEnvironment {
+public:
+  // redefined virtual functions:
+  virtual MsgString getResultMsg() const;
+
+  virtual void setResultMsg(MsgString msg);
+  virtual void setResultMsg(MsgString msg1,
+		    MsgString msg2);
+  virtual void setResultMsg(MsgString msg1,
+		    MsgString msg2,
+		    MsgString msg3);
+  virtual void setResultErrMsg(MsgString msg, int err = 0);
+
+  virtual void appendToResultMsg(MsgString msg);
+
+  virtual void reportBackgroundError();
+
+protected:
+  BasicUsageEnvironment0(TaskScheduler& taskScheduler);
+  virtual ~BasicUsageEnvironment0();
+
+private:
+  void reset();
+
+  char fResultMsgBuffer[RESULT_MSG_BUFFER_MAX];
+  unsigned fCurBufferSize;
+  unsigned fBufferMaxSize;
+};
+
+class HandlerSet; // forward
+
+#define MAX_NUM_EVENT_TRIGGERS 32
+
+// An abstract base class, useful for subclassing
+// (e.g., to redefine the implementation of socket event handling)
+class BasicTaskScheduler0: public TaskScheduler {
+public:
+  virtual ~BasicTaskScheduler0();
+
+  virtual void SingleStep(unsigned maxDelayTime = 0) = 0;
+      // "maxDelayTime" is in microseconds.  It allows a subclass to impose a limit
+      // on how long "select()" can delay, in case it wants to also do polling.
+      // 0 (the default value) means: There's no maximum; just look at the delay queue
+
+public:
+  // Redefined virtual functions:
+  virtual TaskToken scheduleDelayedTask(int64_t microseconds, TaskFunc* proc,
+				void* clientData);
+  virtual void unscheduleDelayedTask(TaskToken& prevTask);
+
+  virtual void doEventLoop(char volatile* watchVariable);
+
+  virtual EventTriggerId createEventTrigger(TaskFunc* eventHandlerProc);
+  virtual void deleteEventTrigger(EventTriggerId eventTriggerId);
+  virtual void triggerEvent(EventTriggerId eventTriggerId, void* clientData = NULL);
+
+protected:
+  BasicTaskScheduler0();
+
+protected:
+  // To implement delayed operations:
+  DelayQueue fDelayQueue;
+
+  // To implement background reads:
+  HandlerSet* fHandlers;
+  int fLastHandledSocketNum;
+
+  // To implement event triggers:
+  EventTriggerId volatile fTriggersAwaitingHandling; // implemented as a 32-bit bitmap
+  EventTriggerId fLastUsedTriggerMask; // implemented as a 32-bit bitmap
+  TaskFunc* fTriggeredEventHandlers[MAX_NUM_EVENT_TRIGGERS];
+  void* fTriggeredEventClientDatas[MAX_NUM_EVENT_TRIGGERS];
+  unsigned fLastUsedTriggerNum; // in the range [0,MAX_NUM_EVENT_TRIGGERS)
+};
+
+#endif
diff --git a/BasicUsageEnvironment/include/BasicUsageEnvironment_version.hh b/BasicUsageEnvironment/include/BasicUsageEnvironment_version.hh
new file mode 100644
index 0000000..e7b141d
--- /dev/null
+++ b/BasicUsageEnvironment/include/BasicUsageEnvironment_version.hh
@@ -0,0 +1,10 @@
+// Version information for the "BasicUsageEnvironment" library
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+
+#ifndef _BASICUSAGEENVIRONMENT_VERSION_HH
+#define _BASICUSAGEENVIRONMENT_VERSION_HH
+
+#define BASICUSAGEENVIRONMENT_LIBRARY_VERSION_STRING	"2020.03.06"
+#define BASICUSAGEENVIRONMENT_LIBRARY_VERSION_INT		1583452800
+
+#endif
diff --git a/BasicUsageEnvironment/include/DelayQueue.hh b/BasicUsageEnvironment/include/DelayQueue.hh
new file mode 100644
index 0000000..18247af
--- /dev/null
+++ b/BasicUsageEnvironment/include/DelayQueue.hh
@@ -0,0 +1,182 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+ // Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// Delay queue
+// C++ header
+
+#ifndef _DELAY_QUEUE_HH
+#define _DELAY_QUEUE_HH
+
+#ifndef _NET_COMMON_H
+#include "NetCommon.h"
+#endif
+
+#ifdef TIME_BASE
+typedef TIME_BASE time_base_seconds;
+#else
+typedef long time_base_seconds;
+#endif
+
+///// A "Timeval" can be either an absolute time, or a time interval /////
+
+class Timeval {
+public:
+  time_base_seconds seconds() const {
+    return fTv.tv_sec;
+  }
+  time_base_seconds seconds() {
+    return fTv.tv_sec;
+  }
+  time_base_seconds useconds() const {
+    return fTv.tv_usec;
+  }
+  time_base_seconds useconds() {
+    return fTv.tv_usec;
+  }
+
+  int operator>=(Timeval const& arg2) const;
+  int operator<=(Timeval const& arg2) const {
+    return arg2 >= *this;
+  }
+  int operator<(Timeval const& arg2) const {
+    return !(*this >= arg2);
+  }
+  int operator>(Timeval const& arg2) const {
+    return arg2 < *this;
+  }
+  int operator==(Timeval const& arg2) const {
+    return *this >= arg2 && arg2 >= *this;
+  }
+  int operator!=(Timeval const& arg2) const {
+    return !(*this == arg2);
+  }
+
+  void operator+=(class DelayInterval const& arg2);
+  void operator-=(class DelayInterval const& arg2);
+  // returns ZERO iff arg2 >= arg1
+
+protected:
+  Timeval(time_base_seconds seconds, time_base_seconds useconds) {
+    fTv.tv_sec = seconds; fTv.tv_usec = useconds;
+  }
+
+private:
+  time_base_seconds& secs() {
+    return (time_base_seconds&)fTv.tv_sec;
+  }
+  time_base_seconds& usecs() {
+    return (time_base_seconds&)fTv.tv_usec;
+  }
+
+  struct timeval fTv;
+};
+
+#ifndef max
+inline Timeval max(Timeval const& arg1, Timeval const& arg2) {
+  return arg1 >= arg2 ? arg1 : arg2;
+}
+#endif
+#ifndef min
+inline Timeval min(Timeval const& arg1, Timeval const& arg2) {
+  return arg1 <= arg2 ? arg1 : arg2;
+}
+#endif
+
+class DelayInterval operator-(Timeval const& arg1, Timeval const& arg2);
+// returns ZERO iff arg2 >= arg1
+
+
+///// DelayInterval /////
+
+class DelayInterval: public Timeval {
+public:
+  DelayInterval(time_base_seconds seconds, time_base_seconds useconds)
+    : Timeval(seconds, useconds) {}
+};
+
+DelayInterval operator*(short arg1, DelayInterval const& arg2);
+
+extern DelayInterval const DELAY_ZERO;
+extern DelayInterval const DELAY_SECOND;
+extern DelayInterval const DELAY_MINUTE;
+extern DelayInterval const DELAY_HOUR;
+extern DelayInterval const DELAY_DAY;
+
+///// _EventTime /////
+
+class _EventTime: public Timeval {
+public:
+  _EventTime(unsigned secondsSinceEpoch = 0,
+	    unsigned usecondsSinceEpoch = 0)
+    // We use the Unix standard epoch: January 1, 1970
+    : Timeval(secondsSinceEpoch, usecondsSinceEpoch) {}
+};
+
+_EventTime TimeNow();
+
+extern _EventTime const THE_END_OF_TIME;
+
+
+///// DelayQueueEntry /////
+
+class DelayQueueEntry {
+public:
+  virtual ~DelayQueueEntry();
+
+  intptr_t token() {
+    return fToken;
+  }
+
+protected: // abstract base class
+  DelayQueueEntry(DelayInterval delay);
+
+  virtual void handleTimeout();
+
+private:
+  friend class DelayQueue;
+  DelayQueueEntry* fNext;
+  DelayQueueEntry* fPrev;
+  DelayInterval fDeltaTimeRemaining;
+
+  intptr_t fToken;
+  static intptr_t tokenCounter;
+};
+
+///// DelayQueue /////
+
+class DelayQueue: public DelayQueueEntry {
+public:
+  DelayQueue();
+  virtual ~DelayQueue();
+
+  void addEntry(DelayQueueEntry* newEntry); // returns a token for the entry
+  void updateEntry(DelayQueueEntry* entry, DelayInterval newDelay);
+  void updateEntry(intptr_t tokenToFind, DelayInterval newDelay);
+  void removeEntry(DelayQueueEntry* entry); // but doesn't delete it
+  DelayQueueEntry* removeEntry(intptr_t tokenToFind); // but doesn't delete it
+
+  DelayInterval const& timeToNextAlarm();
+  void handleAlarm();
+
+private:
+  DelayQueueEntry* head() { return fNext; }
+  DelayQueueEntry* findEntryByToken(intptr_t token);
+  void synchronize(); // bring the 'time remaining' fields up-to-date
+
+  _EventTime fLastSyncTime;
+};
+
+#endif
diff --git a/BasicUsageEnvironment/include/HandlerSet.hh b/BasicUsageEnvironment/include/HandlerSet.hh
new file mode 100644
index 0000000..74df53a
--- /dev/null
+++ b/BasicUsageEnvironment/include/HandlerSet.hh
@@ -0,0 +1,77 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Basic Usage Environment: for a simple, non-scripted, console application
+// C++ header
+
+#ifndef _HANDLER_SET_HH
+#define _HANDLER_SET_HH
+
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+
+////////// HandlerSet (etc.) definition //////////
+
+class HandlerDescriptor {
+  HandlerDescriptor(HandlerDescriptor* nextHandler);
+  virtual ~HandlerDescriptor();
+
+public:
+  int socketNum;
+  int conditionSet;
+  TaskScheduler::BackgroundHandlerProc* handlerProc;
+  void* clientData;
+
+private:
+  // Descriptors are linked together in a doubly-linked list:
+  friend class HandlerSet;
+  friend class HandlerIterator;
+  HandlerDescriptor* fNextHandler;
+  HandlerDescriptor* fPrevHandler;
+};
+
+class HandlerSet {
+public:
+  HandlerSet();
+  virtual ~HandlerSet();
+
+  void assignHandler(int socketNum, int conditionSet, TaskScheduler::BackgroundHandlerProc* handlerProc, void* clientData);
+  void clearHandler(int socketNum);
+  void moveHandler(int oldSocketNum, int newSocketNum);
+
+private:
+  HandlerDescriptor* lookupHandler(int socketNum);
+
+private:
+  friend class HandlerIterator;
+  HandlerDescriptor fHandlers;
+};
+
+class HandlerIterator {
+public:
+  HandlerIterator(HandlerSet& handlerSet);
+  virtual ~HandlerIterator();
+
+  HandlerDescriptor* next(); // returns NULL if none
+  void reset();
+
+private:
+  HandlerSet& fOurSet;
+  HandlerDescriptor* fNextPtr;
+};
+
+#endif
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
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+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
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+
+  "Additional permissions" are terms that supplement the terms of this
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+  A patent license is "discriminatory" if it does not include within
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+
+  Nothing in this License shall be construed as excluding or limiting
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+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
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+  13. Use with the GNU Affero General Public License.
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+  Notwithstanding any other provision of this License, you have
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+  If the Program specifies that a proxy can decide which future
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+  Later license versions may give you additional or different
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+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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+  16. Limitation of Liability.
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
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+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
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+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
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+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
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+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
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+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/COPYING.LESSER b/COPYING.LESSER
new file mode 100644
index 0000000..65c5ca8
--- /dev/null
+++ b/COPYING.LESSER
@@ -0,0 +1,165 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
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+  An "Application" is any work that makes use of an interface provided
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+  A "Combined Work" is a work produced by combining or linking an
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+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
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+  2. Conveying Modified Versions.
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+  If you modify a copy of the Library, and, in your modifications, a
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+   a) under this License, provided that you make a good faith effort to
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diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a0b3601
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,842 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+in a country, would infringe one or more identifiable patents in that
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+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
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+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
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+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
+
+
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
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+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
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+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
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+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
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+engineering for debugging such modifications, if you also do each of
+the following:
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+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
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+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
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+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
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+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
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+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
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+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
diff --git a/Makefile.head b/Makefile.head
new file mode 100644
index 0000000..458c54c
--- /dev/null
+++ b/Makefile.head
@@ -0,0 +1 @@
+##### Change the following for your environment:
diff --git a/Makefile.tail b/Makefile.tail
new file mode 100644
index 0000000..6c49b83
--- /dev/null
+++ b/Makefile.tail
@@ -0,0 +1,54 @@
+##### End of variables to change
+
+LIVEMEDIA_DIR = liveMedia
+GROUPSOCK_DIR = groupsock
+USAGE_ENVIRONMENT_DIR = UsageEnvironment
+BASIC_USAGE_ENVIRONMENT_DIR = BasicUsageEnvironment
+
+TESTPROGS_DIR = testProgs
+
+MEDIA_SERVER_DIR = mediaServer
+
+PROXY_SERVER_DIR = proxyServer
+
+HLS_PROXY_DIR = hlsProxy
+
+all:
+	cd $(LIVEMEDIA_DIR) ; $(MAKE)
+	cd $(GROUPSOCK_DIR) ; $(MAKE)
+	cd $(USAGE_ENVIRONMENT_DIR) ; $(MAKE)
+	cd $(BASIC_USAGE_ENVIRONMENT_DIR) ; $(MAKE)
+	cd $(TESTPROGS_DIR) ; $(MAKE)
+	cd $(MEDIA_SERVER_DIR) ; $(MAKE)
+	cd $(PROXY_SERVER_DIR) ; $(MAKE)
+	cd $(HLS_PROXY_DIR) ; $(MAKE)
+	@echo
+	@echo "For more information about this source code (including your obligations under the LGPL), please see our FAQ at http://live555.com/liveMedia/faq.html"
+
+install:
+	cd $(LIVEMEDIA_DIR) ; $(MAKE) install
+	cd $(GROUPSOCK_DIR) ; $(MAKE) install
+	cd $(USAGE_ENVIRONMENT_DIR) ; $(MAKE) install
+	cd $(BASIC_USAGE_ENVIRONMENT_DIR) ; $(MAKE) install
+	cd $(TESTPROGS_DIR) ; $(MAKE) install
+	cd $(MEDIA_SERVER_DIR) ; $(MAKE) install
+	cd $(PROXY_SERVER_DIR) ; $(MAKE) install
+	cd $(HLS_PROXY_DIR) ; $(MAKE) install
+
+clean:
+	cd $(LIVEMEDIA_DIR) ; $(MAKE) clean
+	cd $(GROUPSOCK_DIR) ; $(MAKE) clean
+	cd $(USAGE_ENVIRONMENT_DIR) ; $(MAKE) clean
+	cd $(BASIC_USAGE_ENVIRONMENT_DIR) ; $(MAKE) clean
+	cd $(TESTPROGS_DIR) ; $(MAKE) clean
+	cd $(MEDIA_SERVER_DIR) ; $(MAKE) clean
+	cd $(PROXY_SERVER_DIR) ; $(MAKE) clean
+	cd $(HLS_PROXY_DIR) ; $(MAKE) clean
+
+distclean: clean
+	-rm -f $(LIVEMEDIA_DIR)/Makefile $(GROUPSOCK_DIR)/Makefile \
+	  $(USAGE_ENVIRONMENT_DIR)/Makefile $(BASIC_USAGE_ENVIRONMENT_DIR)/Makefile \
+	  $(TESTPROGS_DIR)/Makefile $(MEDIA_SERVER_DIR)/Makefile \
+	  $(PROXY_SERVER_DIR)/Makefile \
+	  $(HLS_PROXY_DIR)/Makefile \
+	  Makefile
diff --git a/README b/README
new file mode 100644
index 0000000..73874c2
--- /dev/null
+++ b/README
@@ -0,0 +1,2 @@
+For documentation and instructions for building this software,
+see <http://www.live555.com/liveMedia/>
diff --git a/UsageEnvironment/COPYING b/UsageEnvironment/COPYING
new file mode 120000
index 0000000..012065c
--- /dev/null
+++ b/UsageEnvironment/COPYING
@@ -0,0 +1 @@
+../COPYING
\ No newline at end of file
diff --git a/UsageEnvironment/COPYING.LESSER b/UsageEnvironment/COPYING.LESSER
new file mode 120000
index 0000000..ce9a3ce
--- /dev/null
+++ b/UsageEnvironment/COPYING.LESSER
@@ -0,0 +1 @@
+../COPYING.LESSER
\ No newline at end of file
diff --git a/UsageEnvironment/HashTable.cpp b/UsageEnvironment/HashTable.cpp
new file mode 100644
index 0000000..e9c0276
--- /dev/null
+++ b/UsageEnvironment/HashTable.cpp
@@ -0,0 +1,50 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Generic Hash Table
+// Implementation
+
+#include "HashTable.hh"
+
+HashTable::HashTable() {
+}
+
+HashTable::~HashTable() {
+}
+
+HashTable::Iterator::Iterator() {
+}
+
+HashTable::Iterator::~Iterator() {}
+
+void* HashTable::RemoveNext() {
+  Iterator* iter = Iterator::create(*this);
+  char const* key;
+  void* removedValue = iter->next(key);
+  if (removedValue != 0) Remove(key);
+
+  delete iter;
+  return removedValue;
+}
+
+void* HashTable::getFirst() {
+  Iterator* iter = Iterator::create(*this);
+  char const* key;
+  void* firstValue = iter->next(key);
+
+  delete iter;
+  return firstValue;
+}
diff --git a/UsageEnvironment/Makefile.head b/UsageEnvironment/Makefile.head
new file mode 100644
index 0000000..48b0268
--- /dev/null
+++ b/UsageEnvironment/Makefile.head
@@ -0,0 +1,4 @@
+INCLUDES = -Iinclude -I../groupsock/include
+PREFIX = /usr/local
+LIBDIR = $(PREFIX)/lib
+##### Change the following for your environment:
diff --git a/UsageEnvironment/Makefile.tail b/UsageEnvironment/Makefile.tail
new file mode 100644
index 0000000..a7c23df
--- /dev/null
+++ b/UsageEnvironment/Makefile.tail
@@ -0,0 +1,37 @@
+##### End of variables to change
+
+NAME = libUsageEnvironment
+USAGE_ENVIRONMENT_LIB = $(NAME).$(LIB_SUFFIX)
+ALL = $(USAGE_ENVIRONMENT_LIB)
+all:	$(ALL)
+
+OBJS = UsageEnvironment.$(OBJ) HashTable.$(OBJ) strDup.$(OBJ)
+
+$(USAGE_ENVIRONMENT_LIB): $(OBJS)
+	$(LIBRARY_LINK)$@ $(LIBRARY_LINK_OPTS) $(OBJS)
+
+.$(C).$(OBJ):
+	$(C_COMPILER) -c $(C_FLAGS) $<       
+
+.$(CPP).$(OBJ):
+	$(CPLUSPLUS_COMPILER) -c $(CPLUSPLUS_FLAGS) $<
+
+UsageEnvironment.$(CPP):	include/UsageEnvironment.hh
+include/UsageEnvironment.hh:	include/UsageEnvironment_version.hh include/Boolean.hh include/strDup.hh
+HashTable.$(CPP):		include/HashTable.hh
+include/HashTable.hh:		include/Boolean.hh
+strDup.$(CPP):			include/strDup.hh
+
+clean:
+	-rm -rf *.$(OBJ) $(ALL) core *.core *~ include/*~
+
+install: install1 $(INSTALL2)
+install1: $(USAGE_ENVIRONMENT_LIB)
+	  install -d $(DESTDIR)$(PREFIX)/include/UsageEnvironment $(DESTDIR)$(LIBDIR)
+	  install -m 644 include/*.hh $(DESTDIR)$(PREFIX)/include/UsageEnvironment
+	  install -m 644 $(USAGE_ENVIRONMENT_LIB) $(DESTDIR)$(LIBDIR)
+install_shared_libraries: $(USAGE_ENVIRONMENT_LIB)
+	  ln -fs $(NAME).$(LIB_SUFFIX) $(DESTDIR)$(LIBDIR)/$(NAME).$(SHORT_LIB_SUFFIX)
+	  ln -fs $(NAME).$(LIB_SUFFIX) $(DESTDIR)$(LIBDIR)/$(NAME).so
+
+##### Any additional, platform-specific rules come here:
diff --git a/UsageEnvironment/UsageEnvironment.cpp b/UsageEnvironment/UsageEnvironment.cpp
new file mode 100644
index 0000000..a181bd0
--- /dev/null
+++ b/UsageEnvironment/UsageEnvironment.cpp
@@ -0,0 +1,62 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Usage Environment
+// Implementation
+
+#include "UsageEnvironment.hh"
+
+Boolean UsageEnvironment::reclaim() {
+  // We delete ourselves only if we have no remainining state:
+  if (liveMediaPriv == NULL && groupsockPriv == NULL) {
+    delete this;
+    return True;
+  }
+
+  return False;
+}
+
+UsageEnvironment::UsageEnvironment(TaskScheduler& scheduler)
+  : liveMediaPriv(NULL), groupsockPriv(NULL), fScheduler(scheduler) {
+}
+
+UsageEnvironment::~UsageEnvironment() {
+}
+
+// By default, we handle 'should not occur'-type library errors by calling abort().  Subclasses can redefine this, if desired.
+// (If your runtime library doesn't define the "abort()" function, then define your own (e.g., that does nothing).)
+void UsageEnvironment::internalError() {
+  abort();
+}
+
+
+TaskScheduler::TaskScheduler() {
+}
+
+TaskScheduler::~TaskScheduler() {
+}
+
+void TaskScheduler::rescheduleDelayedTask(TaskToken& task,
+					  int64_t microseconds, TaskFunc* proc,
+					  void* clientData) {
+  unscheduleDelayedTask(task);
+  task = scheduleDelayedTask(microseconds, proc, clientData);
+}
+
+// By default, we handle 'should not occur'-type library errors by calling abort().  Subclasses can redefine this, if desired.
+void TaskScheduler::internalError() {
+  abort();
+}
diff --git a/UsageEnvironment/include/Boolean.hh b/UsageEnvironment/include/Boolean.hh
new file mode 100644
index 0000000..3d8401e
--- /dev/null
+++ b/UsageEnvironment/include/Boolean.hh
@@ -0,0 +1,37 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+#ifndef _BOOLEAN_HH
+#define _BOOLEAN_HH
+
+#if defined(__BORLANDC__) || (!defined(USE_LIVE555_BOOLEAN) && defined(_MSC_VER) &&  _MSC_VER >= 1400)
+// Use the "bool" type defined by the Borland compiler, and MSVC++ 8.0, Visual Studio 2005 and higher
+typedef bool Boolean;
+#define False false
+#define True true
+#else
+typedef unsigned char Boolean;
+#ifndef __MSHTML_LIBRARY_DEFINED__
+#ifndef False
+const Boolean False = 0;
+#endif
+#ifndef True
+const Boolean True = 1;
+#endif
+
+#endif
+#endif
+
+#endif
diff --git a/UsageEnvironment/include/HashTable.hh b/UsageEnvironment/include/HashTable.hh
new file mode 100644
index 0000000..3567c2d
--- /dev/null
+++ b/UsageEnvironment/include/HashTable.hh
@@ -0,0 +1,76 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Generic Hash Table
+// C++ header
+
+#ifndef _HASH_TABLE_HH
+#define _HASH_TABLE_HH
+
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+
+class HashTable {
+public:
+  virtual ~HashTable();
+  
+  // The following must be implemented by a particular
+  // implementation (subclass):
+  static HashTable* create(int keyType);
+  
+  virtual void* Add(char const* key, void* value) = 0;
+  // Returns the old value if different, otherwise 0
+  virtual Boolean Remove(char const* key) = 0;
+  virtual void* Lookup(char const* key) const = 0;
+  // Returns 0 if not found
+  virtual unsigned numEntries() const = 0;
+  Boolean IsEmpty() const { return numEntries() == 0; }
+  
+  // Used to iterate through the members of the table:
+  class Iterator {
+  public:
+    // The following must be implemented by a particular
+    // implementation (subclass):
+    static Iterator* create(HashTable const& hashTable);
+    
+    virtual ~Iterator();
+    
+    virtual void* next(char const*& key) = 0; // returns 0 if none
+    
+  protected:
+    Iterator(); // abstract base class
+  };
+  
+  // A shortcut that can be used to successively remove each of
+  // the entries in the table (e.g., so that their values can be
+  // deleted, if they happen to be pointers to allocated memory).
+  void* RemoveNext();
+  
+  // Returns the first entry in the table.
+  // (This is useful for deleting each entry in the table, if the entry's destructor also removes itself from the table.)
+  void* getFirst(); 
+  
+protected:
+  HashTable(); // abstract base class
+};
+
+// Warning: The following are deliberately the same as in
+// Tcl's hash table implementation
+int const STRING_HASH_KEYS = 0;
+int const ONE_WORD_HASH_KEYS = 1;
+
+#endif
diff --git a/UsageEnvironment/include/UsageEnvironment.hh b/UsageEnvironment/include/UsageEnvironment.hh
new file mode 100644
index 0000000..e481052
--- /dev/null
+++ b/UsageEnvironment/include/UsageEnvironment.hh
@@ -0,0 +1,172 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Usage Environment
+// C++ header
+
+#ifndef _USAGE_ENVIRONMENT_HH
+#define _USAGE_ENVIRONMENT_HH
+
+#ifndef _USAGEENVIRONMENT_VERSION_HH
+#include "UsageEnvironment_version.hh"
+#endif
+
+#ifndef _NETCOMMON_H
+#include "NetCommon.h"
+#endif
+
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+
+#ifndef _STRDUP_HH
+// "strDup()" is used often, so include this here, so everyone gets it:
+#include "strDup.hh"
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#ifdef __BORLANDC__
+#define _setmode setmode
+#define _O_BINARY O_BINARY
+#endif
+
+class TaskScheduler; // forward
+
+// An abstract base class, subclassed for each use of the library
+
+class UsageEnvironment {
+public:
+  Boolean reclaim();
+      // returns True iff we were actually able to delete our object
+
+  // task scheduler:
+  TaskScheduler& taskScheduler() const {return fScheduler;}
+
+  // result message handling:
+  typedef char const* MsgString;
+  virtual MsgString getResultMsg() const = 0;
+
+  virtual void setResultMsg(MsgString msg) = 0;
+  virtual void setResultMsg(MsgString msg1, MsgString msg2) = 0;
+  virtual void setResultMsg(MsgString msg1, MsgString msg2, MsgString msg3) = 0;
+  virtual void setResultErrMsg(MsgString msg, int err = 0) = 0;
+	// like setResultMsg(), except that an 'errno' message is appended.  (If "err == 0", the "getErrno()" code is used instead.)
+
+  virtual void appendToResultMsg(MsgString msg) = 0;
+
+  virtual void reportBackgroundError() = 0;
+	// used to report a (previously set) error message within
+	// a background event
+
+  virtual void internalError(); // used to 'handle' a 'should not occur'-type error condition within the library.
+
+  // 'errno'
+  virtual int getErrno() const = 0;
+
+  // 'console' output:
+  virtual UsageEnvironment& operator<<(char const* str) = 0;
+  virtual UsageEnvironment& operator<<(int i) = 0;
+  virtual UsageEnvironment& operator<<(unsigned u) = 0;
+  virtual UsageEnvironment& operator<<(double d) = 0;
+  virtual UsageEnvironment& operator<<(void* p) = 0;
+
+  // a pointer to additional, optional, client-specific state
+  void* liveMediaPriv;
+  void* groupsockPriv;
+
+protected:
+  UsageEnvironment(TaskScheduler& scheduler); // abstract base class
+  virtual ~UsageEnvironment(); // we are deleted only by reclaim()
+
+private:
+  TaskScheduler& fScheduler;
+};
+
+
+typedef void TaskFunc(void* clientData);
+typedef void* TaskToken;
+typedef u_int32_t EventTriggerId;
+
+class TaskScheduler {
+public:
+  virtual ~TaskScheduler();
+
+  virtual TaskToken scheduleDelayedTask(int64_t microseconds, TaskFunc* proc,
+					void* clientData) = 0;
+	// Schedules a task to occur (after a delay) when we next
+	// reach a scheduling point.
+	// (Does not delay if "microseconds" <= 0)
+	// Returns a token that can be used in a subsequent call to
+	// unscheduleDelayedTask() or rescheduleDelayedTask()
+        // (but only if the task has not yet occurred).
+
+  virtual void unscheduleDelayedTask(TaskToken& prevTask) = 0;
+	// (Has no effect if "prevTask" == NULL)
+        // Sets "prevTask" to NULL afterwards.
+        // Note: This MUST NOT be called if the scheduled task has already occurred.
+
+  virtual void rescheduleDelayedTask(TaskToken& task,
+				     int64_t microseconds, TaskFunc* proc,
+				     void* clientData);
+        // Combines "unscheduleDelayedTask()" with "scheduleDelayedTask()"
+        // (setting "task" to the new task token).
+        // Note: This MUST NOT be called if the scheduled task has already occurred.
+
+  // For handling socket operations in the background (from the event loop):
+  typedef void BackgroundHandlerProc(void* clientData, int mask);
+    // Possible bits to set in "mask".  (These are deliberately defined
+    // the same as those in Tcl, to make a Tcl-based subclass easy.)
+    #define SOCKET_READABLE    (1<<1)
+    #define SOCKET_WRITABLE    (1<<2)
+    #define SOCKET_EXCEPTION   (1<<3)
+  virtual void setBackgroundHandling(int socketNum, int conditionSet, BackgroundHandlerProc* handlerProc, void* clientData) = 0;
+  void disableBackgroundHandling(int socketNum) { setBackgroundHandling(socketNum, 0, NULL, NULL); }
+  virtual void moveSocketHandling(int oldSocketNum, int newSocketNum) = 0;
+        // Changes any socket handling for "oldSocketNum" so that occurs with "newSocketNum" instead.
+
+  virtual void doEventLoop(char volatile* watchVariable = NULL) = 0;
+      // Causes further execution to take place within the event loop.
+      // Delayed tasks, background I/O handling, and other events are handled, sequentially (as a single thread of control).
+      // (If "watchVariable" is not NULL, then we return from this routine when *watchVariable != 0)
+
+  virtual EventTriggerId createEventTrigger(TaskFunc* eventHandlerProc) = 0;
+      // Creates a 'trigger' for an event, which - if it occurs - will be handled (from the event loop) using "eventHandlerProc".
+      // (Returns 0 iff no such trigger can be created (e.g., because of implementation limits on the number of triggers).)
+  virtual void deleteEventTrigger(EventTriggerId eventTriggerId) = 0;
+
+  virtual void triggerEvent(EventTriggerId eventTriggerId, void* clientData = NULL) = 0;
+      // Causes the (previously-registered) handler function for the specified event to be handled (from the event loop).
+      // The handler function is called with "clientData" as parameter.
+      // Note: This function (unlike other library functions) may be called from an external thread
+      // - to signal an external event.  (However, "triggerEvent()" should not be called with the
+      // same 'event trigger id' from different threads.)
+
+  // The following two functions are deprecated, and are provided for backwards-compatibility only:
+  void turnOnBackgroundReadHandling(int socketNum, BackgroundHandlerProc* handlerProc, void* clientData) {
+    setBackgroundHandling(socketNum, SOCKET_READABLE, handlerProc, clientData);
+  }
+  void turnOffBackgroundReadHandling(int socketNum) { disableBackgroundHandling(socketNum); }
+
+  virtual void internalError(); // used to 'handle' a 'should not occur'-type error condition within the library.
+
+protected:
+  TaskScheduler(); // abstract base class
+};
+
+#endif
diff --git a/UsageEnvironment/include/UsageEnvironment_version.hh b/UsageEnvironment/include/UsageEnvironment_version.hh
new file mode 100644
index 0000000..ffaac6f
--- /dev/null
+++ b/UsageEnvironment/include/UsageEnvironment_version.hh
@@ -0,0 +1,10 @@
+// Version information for the "UsageEnvironment" library
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+
+#ifndef _USAGEENVIRONMENT_VERSION_HH
+#define _USAGEENVIRONMENT_VERSION_HH
+
+#define USAGEENVIRONMENT_LIBRARY_VERSION_STRING	"2020.03.06"
+#define USAGEENVIRONMENT_LIBRARY_VERSION_INT		1583452800
+
+#endif
diff --git a/UsageEnvironment/include/strDup.hh b/UsageEnvironment/include/strDup.hh
new file mode 100644
index 0000000..c17cdad
--- /dev/null
+++ b/UsageEnvironment/include/strDup.hh
@@ -0,0 +1,37 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+
+#ifndef _STRDUP_HH
+#define _STRDUP_HH
+
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A C++ equivalent to the standard C routine "strdup()".
+// This generates a char* that can be deleted using "delete[]"
+// Header
+
+#include <string.h>
+
+char* strDup(char const* str);
+// Note: strDup(NULL) returns NULL
+
+char* strDupSize(char const* str);
+// Like "strDup()", except that it *doesn't* copy the original.
+// (Instead, it just allocates a string of the same size as the original.)
+
+char* strDupSize(char const* str, size_t& resultBufSize);
+// An alternative form of "strDupSize()" that also returns the size of the allocated buffer.
+
+#endif
diff --git a/UsageEnvironment/strDup.cpp b/UsageEnvironment/strDup.cpp
new file mode 100644
index 0000000..396c748
--- /dev/null
+++ b/UsageEnvironment/strDup.cpp
@@ -0,0 +1,50 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A C++ equivalent to the standard C routine "strdup()".
+// This generates a char* that can be deleted using "delete[]"
+// Implementation
+
+#include "strDup.hh"
+
+char* strDup(char const* str) {
+  if (str == NULL) return NULL;
+  size_t len = strlen(str) + 1;
+  char* copy = new char[len];
+
+  if (copy != NULL) {
+    memcpy(copy, str, len);
+  }
+  return copy;
+}
+
+char* strDupSize(char const* str) {
+  size_t dummy;
+
+  return strDupSize(str, dummy);
+}
+
+char* strDupSize(char const* str, size_t& resultBufSize) {
+  if (str == NULL) {
+    resultBufSize = 0;
+    return NULL;
+  }
+
+  resultBufSize = strlen(str) + 1;
+  char* copy = new char[resultBufSize];
+
+  return copy;
+}
diff --git a/WindowsAudioInputDevice/WindowsAudioInputDevice.mak b/WindowsAudioInputDevice/WindowsAudioInputDevice.mak
new file mode 100644
index 0000000..50230e5
--- /dev/null
+++ b/WindowsAudioInputDevice/WindowsAudioInputDevice.mak
@@ -0,0 +1,108 @@
+INCLUDES = -I../UsageEnvironment/include -I../groupsock/include -I../liveMedia/include
+##### Change the following for your environment: 
+# Comment out the following line to produce Makefiles that generate debuggable code:
+NODEBUG=1
+
+# The following definition ensures that we are properly matching
+# the WinSock2 library file with the correct header files.
+# (will link with "ws2_32.lib" and include "winsock2.h" & "Ws2tcpip.h")
+TARGETOS = WINNT
+
+# If for some reason you wish to use WinSock1 instead, uncomment the
+# following two definitions.
+# (will link with "wsock32.lib" and include "winsock.h")
+#TARGETOS = WIN95
+#APPVER = 4.0
+
+!include    <ntwin32.mak>
+
+UI_OPTS =		$(guilflags) $(guilibsdll)
+# Use the following to get a console (e.g., for debugging):
+CONSOLE_UI_OPTS =		$(conlflags) $(conlibsdll)
+CPU=i386
+
+TOOLS32	=		c:\Program Files\DevStudio\Vc
+COMPILE_OPTS =		$(INCLUDES) $(cdebug) $(cflags) $(cvarsdll) -I. -I"$(TOOLS32)\include"
+C =			c
+C_COMPILER =		"$(TOOLS32)\bin\cl"
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	$(C_COMPILER)
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS)
+OBJ =			obj
+LINK =			$(link) -out:
+LIBRARY_LINK =		lib -out:
+LINK_OPTS_0 =		$(linkdebug) msvcirt.lib
+LIBRARY_LINK_OPTS =	
+LINK_OPTS =		$(LINK_OPTS_0) $(UI_OPTS)
+CONSOLE_LINK_OPTS =	$(LINK_OPTS_0) $(CONSOLE_UI_OPTS)
+SERVICE_LINK_OPTS =     kernel32.lib advapi32.lib shell32.lib -subsystem:console,$(APPVER)
+LIB_SUFFIX =		lib
+LIBS_FOR_CONSOLE_APPLICATION =
+LIBS_FOR_GUI_APPLICATION =
+MULTIMEDIA_LIBS =	winmm.lib
+EXE =			.exe
+
+rc32 = "$(TOOLS32)\bin\rc"
+.rc.res:
+	$(rc32) $<
+##### End of variables to change
+
+WINDOWSAUDIOINPUTDEVICE_NOMIXER_LIB = libWindowsAudioInputDevice_noMixer.$(LIB_SUFFIX)
+WINDOWSAUDIOINPUTDEVICE_MIXER_LIB = libWindowsAudioInputDevice_mixer.$(LIB_SUFFIX)
+ALL = $(WINDOWSAUDIOINPUTDEVICE_NOMIXER_LIB) $(WINDOWSAUDIOINPUTDEVICE_MIXER_LIB) \
+	showAudioInputPorts_noMixer$(EXE) showAudioInputPorts_mixer$(EXE)
+all::	$(ALL)
+
+.$(C).$(OBJ):
+	$(C_COMPILER) -c $(C_FLAGS) $<       
+
+.$(CPP).$(OBJ):
+	$(CPLUSPLUS_COMPILER) -c $(CPLUSPLUS_FLAGS) $<
+
+WINDOWSAUDIOINPUTDEVICE_NOMIXER_LIB_OBJS = WindowsAudioInputDevice_common.$(OBJ) WindowsAudioInputDevice_noMixer.$(OBJ)
+WINDOWSAUDIOINPUTDEVICE_MIXER_LIB_OBJS = WindowsAudioInputDevice_common.$(OBJ) WindowsAudioInputDevice_mixer.$(OBJ)
+
+WindowsAudioInputDevice_common.$(CPP):	WindowsAudioInputDevice_common.hh
+WindowsAudioInputDevice_noMixer.$(CPP):	WindowsAudioInputDevice_noMixer.hh
+WindowsAudioInputDevice_noMixer.hh:		WindowsAudioInputDevice_common.hh
+WindowsAudioInputDevice_mixer.$(CPP):	WindowsAudioInputDevice_mixer.hh
+WindowsAudioInputDevice_mixer.hh:		WindowsAudioInputDevice_common.hh
+
+$(WINDOWSAUDIOINPUTDEVICE_NOMIXER_LIB): $(WINDOWSAUDIOINPUTDEVICE_NOMIXER_LIB_OBJS) \
+	$(PLATFORM_SPECIFIC_LIB_OBJS)
+	$(LIBRARY_LINK)$@ $(LIBRARY_LINK_OPTS) \
+	$(WINDOWSAUDIOINPUTDEVICE_NOMIXER_LIB_OBJS)
+$(WINDOWSAUDIOINPUTDEVICE_MIXER_LIB): $(WINDOWSAUDIOINPUTDEVICE_MIXER_LIB_OBJS) \
+	$(PLATFORM_SPECIFIC_LIB_OBJS)
+	$(LIBRARY_LINK)$@ $(LIBRARY_LINK_OPTS) \
+	$(WINDOWSAUDIOINPUTDEVICE_MIXER_LIB_OBJS)
+
+USAGE_ENVIRONMENT_DIR = ../UsageEnvironment
+USAGE_ENVIRONMENT_LIB = $(USAGE_ENVIRONMENT_DIR)/libUsageEnvironment.$(LIB_SUFFIX)
+BASIC_USAGE_ENVIRONMENT_DIR = ../BasicUsageEnvironment
+BASIC_USAGE_ENVIRONMENT_LIB = $(BASIC_USAGE_ENVIRONMENT_DIR)/libBasicUsageEnvironment.$(LIB_SUFFIX)
+LIVEMEDIA_DIR = ../liveMedia
+LIVEMEDIA_LIB = $(LIVEMEDIA_DIR)/libliveMedia.$(LIB_SUFFIX)
+GROUPSOCK_DIR = ../groupsock
+GROUPSOCK_LIB = $(GROUPSOCK_DIR)/libgroupsock.$(LIB_SUFFIX)
+LOCAL_LIBS =    $(LIVEMEDIA_LIB) $(GROUPSOCK_LIB) \
+                $(USAGE_ENVIRONMENT_LIB) $(BASIC_USAGE_ENVIRONMENT_LIB)
+LOCAL_LIBS_NOMIXER =    $(WINDOWSAUDIOINPUTDEVICE_NOMIXER_LIB) $(LOCAL_LIBS)
+LOCAL_LIBS_MIXER =    $(WINDOWSAUDIOINPUTDEVICE_MIXER_LIB) $(LOCAL_LIBS)
+MULTIMEDIA_LIBS =       winmm.lib
+LIBS_NOMIXER = $(LOCAL_LIBS_NOMIXER) $(LIBS_FOR_CONSOLE_APPLICATION) $(MULTIMEDIA_LIBS)
+LIBS_MIXER = $(LOCAL_LIBS_MIXER) $(LIBS_FOR_CONSOLE_APPLICATION) $(MULTIMEDIA_LIBS)
+
+SHOW_AUDIO_INPUT_PORTS_OBJS = showAudioInputPorts.$(OBJ)
+
+showAudioInputPorts_noMixer$(EXE):	$(SHOW_AUDIO_INPUT_PORTS_OBJS) $(LOCAL_LIBS_NOMIXER)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(SHOW_AUDIO_INPUT_PORTS_OBJS) $(LIBS_NOMIXER)
+showAudioInputPorts_mixer$(EXE):	$(SHOW_AUDIO_INPUT_PORTS_OBJS) $(LOCAL_LIBS_MIXER)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(SHOW_AUDIO_INPUT_PORTS_OBJS) $(LIBS_MIXER)
+
+clean:
+	-rm -rf *.$(OBJ) $(ALL) tcl2array$(EXE) core *.core *~
+	-rm -rf $(TCL_EMBEDDED_CPLUSPLUS_FILES) $(TK_EMBEDDED_CPLUSPLUS_FILES) $(MISC_EMBEDDED_CPLUSPLUS_FILES)
+
+##### Any additional, platform-specific rules come here:
diff --git a/WindowsAudioInputDevice/WindowsAudioInputDevice_common.cpp b/WindowsAudioInputDevice/WindowsAudioInputDevice_common.cpp
new file mode 100644
index 0000000..57ab203
--- /dev/null
+++ b/WindowsAudioInputDevice/WindowsAudioInputDevice_common.cpp
@@ -0,0 +1,325 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 2001-2004 Live Networks, Inc.  All rights reserved.
+// Windows implementation of a generic audio input device
+// Base class for both library versions:
+//     One that uses Windows' built-in software mixer; another that doesn't.
+// Implementation
+
+#include "WindowsAudioInputDevice_common.hh"
+#include <GroupsockHelper.hh>
+
+////////// WindowsAudioInputDevice_common implementation //////////
+
+unsigned WindowsAudioInputDevice_common::_bitsPerSample = 16;
+
+WindowsAudioInputDevice_common
+::WindowsAudioInputDevice_common(UsageEnvironment& env, int inputPortNumber,
+			  unsigned char bitsPerSample,
+			  unsigned char numChannels,
+			  unsigned samplingFrequency,
+			  unsigned granularityInMS)
+  : AudioInputDevice(env, bitsPerSample, numChannels, samplingFrequency, granularityInMS),
+    fCurPortIndex(-1), fHaveStarted(False) {
+  _bitsPerSample = bitsPerSample;
+}
+
+WindowsAudioInputDevice_common::~WindowsAudioInputDevice_common() {
+}
+
+Boolean WindowsAudioInputDevice_common::initialSetInputPort(int portIndex) {
+  if (!setInputPort(portIndex)) {
+    char errMsgPrefix[100];
+    sprintf(errMsgPrefix, "Failed to set audio input port number to %d: ", portIndex);
+    char* errMsgSuffix = strDup(envir().getResultMsg());
+    envir().setResultMsg(errMsgPrefix, errMsgSuffix);
+    delete[] errMsgSuffix;
+    return False;
+  } else {
+    return True;
+  }
+}
+
+void WindowsAudioInputDevice_common::doGetNextFrame() {
+  if (!fHaveStarted) {
+    // Before reading the first audio data, flush any existing data:
+    while (readHead != NULL) releaseHeadBuffer();
+    fHaveStarted = True;
+  }
+  fTotalPollingDelay = 0;
+  audioReadyPoller1();
+}
+
+void WindowsAudioInputDevice_common::doStopGettingFrames() {
+  // Turn off the audio poller:
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+}
+
+double WindowsAudioInputDevice_common::getAverageLevel() const {
+  // If the input audio queue is empty, return the previous level,
+  // otherwise use the input queue to recompute "averageLevel":
+  if (readHead != NULL) {
+    double levelTotal = 0.0;
+    unsigned totNumSamples = 0;
+    WAVEHDR* curHdr = readHead;
+    while (1) {
+      short* samplePtr = (short*)(curHdr->lpData);
+      unsigned numSamples = blockSize/2;
+      totNumSamples += numSamples;
+
+      while (numSamples-- > 0) {
+	short sample = *samplePtr++;
+	if (sample < 0) sample = -sample;
+	levelTotal += (unsigned short)sample;
+      }
+
+      if (curHdr == readTail) break;
+      curHdr = curHdr->lpNext;
+    }
+    averageLevel = levelTotal/(totNumSamples*(double)0x8000);
+  }
+  return averageLevel;
+}
+
+void WindowsAudioInputDevice_common::audioReadyPoller(void* clientData) {
+  WindowsAudioInputDevice_common* inputDevice = (WindowsAudioInputDevice_common*)clientData;
+  inputDevice->audioReadyPoller1();
+}
+
+void WindowsAudioInputDevice_common::audioReadyPoller1() {
+  nextTask() = NULL;
+  if (readHead != NULL) {
+    onceAudioIsReady();
+  } else {
+    unsigned const maxPollingDelay = (100 + fGranularityInMS)*1000;
+    if (fTotalPollingDelay > maxPollingDelay) {
+      // We've waited too long for the audio device - assume it's down:
+      handleClosure(this);
+      return;
+    }
+
+    // Try again after a short delay:
+    unsigned const uSecondsToDelay = fGranularityInMS*1000;
+    fTotalPollingDelay += uSecondsToDelay;
+    nextTask() = envir().taskScheduler().scheduleDelayedTask(uSecondsToDelay,
+							     (TaskFunc*)audioReadyPoller, this);
+  }
+}
+
+void WindowsAudioInputDevice_common::onceAudioIsReady() {
+  fFrameSize = readFromBuffers(fTo, fMaxSize, fPresentationTime);
+  if (fFrameSize == 0) {
+    // The source is no longer readable
+    handleClosure(this);
+    return;
+  }
+  fDurationInMicroseconds = 1000000/fSamplingFrequency;
+
+  // Call our own 'after getting' function.  Because we sometimes get here
+  // after returning from a delay, we can call this directly, without risking
+  // infinite recursion
+  afterGetting(this);
+}
+
+static void CALLBACK waveInCallback(HWAVEIN /*hwi*/, UINT uMsg,
+				    DWORD /*dwInstance*/, DWORD dwParam1, DWORD /*dwParam2*/) {
+  switch (uMsg) {
+  case WIM_DATA:
+    WAVEHDR* hdr = (WAVEHDR*)dwParam1;
+    WindowsAudioInputDevice_common::waveInProc(hdr);
+    break;
+  }
+}
+
+Boolean WindowsAudioInputDevice_common::openWavInPort(int index, unsigned numChannels, unsigned samplingFrequency, unsigned granularityInMS) {
+	uSecsPerByte = (8*1e6)/(_bitsPerSample*numChannels*samplingFrequency);
+
+	// Configure the port, based on the specified parameters:
+    WAVEFORMATEX wfx;
+    wfx.wFormatTag      = WAVE_FORMAT_PCM;
+    wfx.nChannels       = numChannels;
+    wfx.nSamplesPerSec  = samplingFrequency;
+    wfx.wBitsPerSample  = _bitsPerSample;
+    wfx.nBlockAlign     = (numChannels*_bitsPerSample)/8;
+    wfx.nAvgBytesPerSec = samplingFrequency*wfx.nBlockAlign;
+    wfx.cbSize          = 0;
+
+    blockSize = (wfx.nAvgBytesPerSec*granularityInMS)/1000;
+
+    // Use a 10-second input buffer, to allow for CPU competition from video, etc.,
+    // and also for some audio cards that buffer as much as 5 seconds of audio.
+    unsigned const bufferSeconds = 10;
+    numBlocks = (bufferSeconds*1000)/granularityInMS;
+
+    if (!waveIn_open(index, wfx)) return False;
+
+    // Set this process's priority high. I'm not sure how much this is really needed,
+    // but the "rat" code does this:
+    SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS);
+	return True;
+}
+
+Boolean WindowsAudioInputDevice_common::waveIn_open(unsigned uid, WAVEFORMATEX& wfx) {
+  if (shWaveIn != NULL) return True; // already open
+
+  do {
+    waveIn_reset();
+    if (waveInOpen(&shWaveIn, uid, &wfx,
+		   (DWORD)waveInCallback, 0, CALLBACK_FUNCTION) != MMSYSERR_NOERROR) break;
+
+    // Allocate read buffers, and headers:
+    readData = new unsigned char[numBlocks*blockSize];
+    if (readData == NULL) break;
+
+    readHdrs = new WAVEHDR[numBlocks];
+    if (readHdrs == NULL) break;
+    readHead = readTail = NULL;
+
+    readTimes = new struct timeval[numBlocks];
+    if (readTimes == NULL) break;
+
+    // Initialize headers:
+    for (unsigned i = 0; i < numBlocks; ++i) {
+      readHdrs[i].lpData = (char*)&readData[i*blockSize];
+      readHdrs[i].dwBufferLength = blockSize;
+      readHdrs[i].dwFlags = 0;
+      if (waveInPrepareHeader(shWaveIn, &readHdrs[i], sizeof (WAVEHDR)) != MMSYSERR_NOERROR) break;
+      if (waveInAddBuffer(shWaveIn, &readHdrs[i], sizeof (WAVEHDR)) != MMSYSERR_NOERROR) break;
+    }
+
+    if (waveInStart(shWaveIn) != MMSYSERR_NOERROR) break;
+
+#ifdef UNICODE
+    hAudioReady = CreateEvent(NULL, TRUE, FALSE, L"waveIn Audio Ready");
+#else
+    hAudioReady = CreateEvent(NULL, TRUE, FALSE, "waveIn Audio Ready");
+#endif
+    return True;
+  } while (0);
+
+  waveIn_reset();
+  return False;
+}
+
+void WindowsAudioInputDevice_common::waveIn_close() {
+  if (shWaveIn == NULL) return; // already closed
+
+  waveInStop(shWaveIn);
+  waveInReset(shWaveIn);
+
+  for (unsigned i = 0; i < numBlocks; ++i) {
+    if (readHdrs[i].dwFlags & WHDR_PREPARED) {
+      waveInUnprepareHeader(shWaveIn, &readHdrs[i], sizeof (WAVEHDR));
+    }
+  }
+
+  waveInClose(shWaveIn);
+  waveIn_reset();
+}
+
+void WindowsAudioInputDevice_common::waveIn_reset() {
+  shWaveIn = NULL;
+
+  delete[] readData; readData = NULL;
+  bytesUsedAtReadHead = 0;
+
+  delete[] readHdrs; readHdrs = NULL;
+  readHead = readTail = NULL;
+
+  delete[] readTimes; readTimes = NULL;
+
+  hAudioReady = NULL;
+}
+
+unsigned WindowsAudioInputDevice_common::readFromBuffers(unsigned char* to, unsigned numBytesWanted, struct timeval& creationTime) {
+  // Begin by computing the creation time of (the first bytes of) this returned audio data:
+  if (readHead != NULL) {
+    int hdrIndex = readHead - readHdrs;
+    creationTime = readTimes[hdrIndex];
+
+    // Adjust this time to allow for any data that's already been read from this buffer:
+    if (bytesUsedAtReadHead > 0) {
+      creationTime.tv_usec += (unsigned)(uSecsPerByte*bytesUsedAtReadHead);
+      creationTime.tv_sec += creationTime.tv_usec/1000000;
+      creationTime.tv_usec %= 1000000;
+    }
+  }
+
+  // Then, read from each available buffer, until we have the data that we want:
+  unsigned numBytesRead = 0;
+  while (readHead != NULL && numBytesRead < numBytesWanted) {
+    unsigned thisRead = min(readHead->dwBytesRecorded - bytesUsedAtReadHead, numBytesWanted - numBytesRead);
+    memmove(&to[numBytesRead], &readHead->lpData[bytesUsedAtReadHead], thisRead);
+    numBytesRead += thisRead;
+    bytesUsedAtReadHead += thisRead;
+    if (bytesUsedAtReadHead == readHead->dwBytesRecorded) {
+      // We're finished with the block; give it back to the device:
+      releaseHeadBuffer();
+    }
+  }
+
+  return numBytesRead;
+}
+
+void WindowsAudioInputDevice_common::releaseHeadBuffer() {
+  WAVEHDR* toRelease = readHead;
+  if (readHead == NULL) return;
+
+  readHead = readHead->lpNext;
+  if (readHead == NULL) readTail = NULL;
+
+  toRelease->lpNext = NULL;
+  toRelease->dwBytesRecorded = 0;
+  toRelease->dwFlags &= ~WHDR_DONE;
+  waveInAddBuffer(shWaveIn, toRelease, sizeof (WAVEHDR));
+  bytesUsedAtReadHead = 0;
+}
+
+void WindowsAudioInputDevice_common::waveInProc(WAVEHDR* hdr) {
+  unsigned hdrIndex = hdr - readHdrs;
+
+  // Record the time that the data arrived:
+  int dontCare;
+  gettimeofday(&readTimes[hdrIndex], &dontCare);
+
+  // Add the block to the tail of the queue:
+  hdr->lpNext = NULL;
+  if (readTail != NULL) {
+    readTail->lpNext = hdr;
+    readTail = hdr;
+  } else {
+    readHead = readTail = hdr;
+  }
+  SetEvent(hAudioReady);
+}
+
+HWAVEIN WindowsAudioInputDevice_common::shWaveIn = NULL;
+
+unsigned WindowsAudioInputDevice_common::blockSize = 0;
+unsigned WindowsAudioInputDevice_common::numBlocks = 0;
+
+unsigned char* WindowsAudioInputDevice_common::readData = NULL;
+DWORD WindowsAudioInputDevice_common::bytesUsedAtReadHead = 0;
+double WindowsAudioInputDevice_common::uSecsPerByte = 0.0;
+double WindowsAudioInputDevice_common::averageLevel = 0.0;
+
+WAVEHDR* WindowsAudioInputDevice_common::readHdrs = NULL;
+WAVEHDR* WindowsAudioInputDevice_common::readHead = NULL;
+WAVEHDR* WindowsAudioInputDevice_common::readTail = NULL;
+
+struct timeval* WindowsAudioInputDevice_common::readTimes = NULL;
+
+HANDLE WindowsAudioInputDevice_common::hAudioReady = NULL;
diff --git a/WindowsAudioInputDevice/WindowsAudioInputDevice_common.hh b/WindowsAudioInputDevice/WindowsAudioInputDevice_common.hh
new file mode 100644
index 0000000..353b872
--- /dev/null
+++ b/WindowsAudioInputDevice/WindowsAudioInputDevice_common.hh
@@ -0,0 +1,82 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Windows implementation of a generic audio input device
+// Base class for both library versions:
+//     One that uses Windows' built-in software mixer; another that doesn't.
+// C++ header
+
+#ifndef _WINDOWS_AUDIO_INPUT_DEVICE_COMMON_HH
+#define _WINDOWS_AUDIO_INPUT_DEVICE_COMMON_HH
+
+#ifndef _AUDIO_INPUT_DEVICE_HH
+#include "AudioInputDevice.hh"
+#endif
+
+class WindowsAudioInputDevice_common: public AudioInputDevice {
+public:
+  static Boolean openWavInPort(int index, unsigned numChannels, unsigned samplingFrequency, unsigned granularityInMS);
+  static void waveIn_close();
+  static void waveInProc(WAVEHDR* hdr); // Windows audio callback function
+
+protected:
+  WindowsAudioInputDevice_common(UsageEnvironment& env, int inputPortNumber,
+	unsigned char bitsPerSample, unsigned char numChannels,
+	unsigned samplingFrequency, unsigned granularityInMS);
+	// virtual base class
+
+  virtual ~WindowsAudioInputDevice_common();
+
+  Boolean initialSetInputPort(int portIndex);
+
+protected:
+  int fCurPortIndex;
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+  virtual double getAverageLevel() const;
+
+private:
+  static void audioReadyPoller(void* clientData);
+
+  void audioReadyPoller1();
+  void onceAudioIsReady();
+
+  // Audio input buffering:
+  static Boolean waveIn_open(unsigned uid, WAVEFORMATEX& wfx);
+  static void waveIn_reset(); // used to implement both of the above
+  static unsigned readFromBuffers(unsigned char* to, unsigned numBytesWanted, struct timeval& creationTime);
+  static void releaseHeadBuffer(); // from the input header queue
+
+private:
+  static unsigned _bitsPerSample;
+  static HWAVEIN shWaveIn;
+  static unsigned blockSize, numBlocks;
+  static unsigned char* readData; // buffer for incoming audio data
+  static DWORD bytesUsedAtReadHead; // number of bytes that have already been read at head
+  static double uSecsPerByte; // used to adjust the time for # bytes consumed since arrival
+  static double averageLevel;
+  static WAVEHDR *readHdrs, *readHead, *readTail; // input header queue
+  static struct timeval* readTimes;
+  static HANDLE hAudioReady; // audio ready event
+
+  Boolean fHaveStarted;
+  unsigned fTotalPollingDelay; // uSeconds
+};
+
+#endif
diff --git a/WindowsAudioInputDevice/WindowsAudioInputDevice_mixer.cpp b/WindowsAudioInputDevice/WindowsAudioInputDevice_mixer.cpp
new file mode 100644
index 0000000..4391844
--- /dev/null
+++ b/WindowsAudioInputDevice/WindowsAudioInputDevice_mixer.cpp
@@ -0,0 +1,496 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 2001-2004 Live Networks, Inc.  All rights reserved.
+// Windows implementation of a generic audio input device
+// This version uses Windows' built-in software mixer.
+// Implementation
+
+#include <WindowsAudioInputDevice_mixer.hh>
+
+////////// Mixer and AudioInputPort definition //////////
+
+class AudioInputPort {
+public:
+  int tag;
+  DWORD dwComponentType;
+  char name[MIXER_LONG_NAME_CHARS];
+};
+
+class Mixer {
+public:
+  Mixer();
+  virtual ~Mixer();
+
+  void open(unsigned numChannels, unsigned samplingFrequency, unsigned granularityInMS);
+  void open(); // open with default parameters
+  void getPortsInfo();
+  Boolean enableInputPort(unsigned portIndex, char const*& errReason, MMRESULT& errCode);
+  void close();
+
+  unsigned index;
+  HMIXER hMixer; // valid when open
+  DWORD dwRecLineID; // valid when open
+  unsigned numPorts;
+  AudioInputPort* ports;
+  char name[MAXPNAMELEN];
+};
+
+
+////////// AudioInputDevice (remaining) implementation //////////
+
+AudioInputDevice*
+AudioInputDevice::createNew(UsageEnvironment& env, int inputPortNumber,
+			    unsigned char bitsPerSample,
+			    unsigned char numChannels,
+			    unsigned samplingFrequency,
+			    unsigned granularityInMS) {
+  Boolean success;
+  WindowsAudioInputDevice* newSource
+    = new WindowsAudioInputDevice(env, inputPortNumber,
+				  bitsPerSample, numChannels,
+				  samplingFrequency, granularityInMS,
+				  success);
+  if (!success) {delete newSource; newSource = NULL;}
+
+  return newSource;
+}
+
+AudioPortNames* AudioInputDevice::getPortNames() {
+  WindowsAudioInputDevice::initializeIfNecessary();
+
+  AudioPortNames* portNames = new AudioPortNames;
+  portNames->numPorts = WindowsAudioInputDevice::numInputPortsTotal;
+  portNames->portName = new char*[WindowsAudioInputDevice::numInputPortsTotal];
+
+  // If there's more than one mixer, print only the port name.
+  // If there's two or more mixers, also include the mixer name
+  // (to disambiguate port names that may be the same name in different mixers)
+  char portNameBuffer[2*MAXPNAMELEN+10/*slop*/];
+  char mixerNameBuffer[MAXPNAMELEN];
+  char const* portNameFmt;
+  if (WindowsAudioInputDevice::numMixers <= 1) {
+    portNameFmt = "%s";
+  } else {
+    portNameFmt = "%s (%s)";
+  }
+
+  unsigned curPortNum = 0;
+  for (unsigned i = 0; i < WindowsAudioInputDevice::numMixers; ++i) {
+    Mixer& mixer = WindowsAudioInputDevice::ourMixers[i];
+
+    if (WindowsAudioInputDevice::numMixers <= 1) {
+      mixerNameBuffer[0] = '\0';
+    } else {
+      strncpy(mixerNameBuffer, mixer.name, sizeof mixerNameBuffer);
+#if 0
+      // Hack: Simplify the mixer name, by truncating after the first space character:
+      for (int k = 0; k < sizeof mixerNameBuffer && mixerNameBuffer[k] != '\0'; ++k) {
+	if (mixerNameBuffer[k] == ' ') {
+	  mixerNameBuffer[k] = '\0';
+	  break;
+	}
+      }
+#endif
+    }
+
+    for (unsigned j = 0; j < mixer.numPorts; ++j) {
+      sprintf(portNameBuffer, portNameFmt, mixer.ports[j].name, mixerNameBuffer);
+      portNames->portName[curPortNum++] = strDup(portNameBuffer);
+    }
+  }
+
+  return portNames;
+}
+
+
+////////// WindowsAudioInputDevice implementation //////////
+
+WindowsAudioInputDevice
+::WindowsAudioInputDevice(UsageEnvironment& env, int inputPortNumber,
+			  unsigned char bitsPerSample,
+			  unsigned char numChannels,
+			  unsigned samplingFrequency,
+			  unsigned granularityInMS,
+			  Boolean& success)
+  : WindowsAudioInputDevice_common(env, inputPortNumber,
+		bitsPerSample, numChannels, samplingFrequency, granularityInMS),
+	fCurMixerId(-1) {
+	success = initialSetInputPort(inputPortNumber);
+}
+
+WindowsAudioInputDevice::~WindowsAudioInputDevice() {
+  if (fCurMixerId >= 0) ourMixers[fCurMixerId].close();
+
+  delete[] ourMixers; ourMixers = NULL;
+  numMixers = numInputPortsTotal = 0;
+}
+
+void WindowsAudioInputDevice::initializeIfNecessary() {
+  if (ourMixers != NULL) return; // we've already been initialized
+  numMixers = mixerGetNumDevs();
+  ourMixers = new Mixer[numMixers];
+
+  // Initialize each mixer:
+  numInputPortsTotal = 0;
+  for (unsigned i = 0; i < numMixers; ++i) {
+    Mixer& mixer = ourMixers[i];
+    mixer.index = i;
+    mixer.open();
+    if (mixer.hMixer != NULL) {
+      // This device has a valid mixer.  Get information about its ports:
+      mixer.getPortsInfo();
+      mixer.close();
+
+      if (mixer.numPorts == 0) continue;
+
+      numInputPortsTotal += mixer.numPorts;
+    } else {
+      mixer.ports = NULL;
+      mixer.numPorts = 0;
+    }
+  }
+}
+
+Boolean WindowsAudioInputDevice::setInputPort(int portIndex) {
+  initializeIfNecessary();
+
+  if (portIndex < 0 || portIndex >= (int)numInputPortsTotal) { // bad index
+    envir().setResultMsg("Bad input port index\n");
+    return False;
+  }
+
+  // Find the mixer and port that corresponds to "portIndex":
+  int newMixerId, portWithinMixer, portIndexCount = 0;
+  for (newMixerId = 0; newMixerId < (int)numMixers; ++newMixerId) {
+    int prevPortIndexCount = portIndexCount;
+    portIndexCount += ourMixers[newMixerId].numPorts;
+    if (portIndexCount > portIndex) { // it's with this mixer
+      portWithinMixer = portIndex - prevPortIndexCount;
+      break;
+    }
+  }
+
+  // Check that this mixer is allowed:
+  if (allowedDeviceNames != NULL) {
+	  int i;
+	  for (i = 0; allowedDeviceNames[i] != NULL; ++i) {
+		  if (strncmp(ourMixers[newMixerId].name, allowedDeviceNames[i],
+			  strlen(allowedDeviceNames[i])) == 0) {
+			  // The allowed device name is a prefix of this mixer's name
+			  break; // this mixer is allowed
+		  }
+	  }
+	  if (allowedDeviceNames[i] == NULL) { // this mixer is not on the allowed list
+		envir().setResultMsg("Access to this audio device is not allowed\n");
+		return False;
+	  }
+  }
+
+  if (newMixerId != fCurMixerId) {
+    // The mixer has changed, so close the old one and open the new one:
+    if (fCurMixerId >= 0) ourMixers[fCurMixerId].close();
+    fCurMixerId = newMixerId;
+    ourMixers[fCurMixerId].open(fNumChannels, fSamplingFrequency, fGranularityInMS);
+  }
+  if (portIndex != fCurPortIndex) {
+    // Change the input port:
+    fCurPortIndex = portIndex;
+    char const* errReason;
+    MMRESULT errCode;
+    if (!ourMixers[newMixerId].enableInputPort(portWithinMixer, errReason, errCode)) {
+      char resultMsg[100];
+      sprintf(resultMsg, "Failed to enable input port: %s failed (0x%08x)\n", errReason, errCode);
+      envir().setResultMsg(resultMsg);
+      return False;
+    }
+    // Later, may also need to transfer 'gain' to new port #####
+  }
+  return True;
+}
+
+unsigned WindowsAudioInputDevice::numMixers = 0;
+
+Mixer* WindowsAudioInputDevice::ourMixers = NULL;
+
+unsigned WindowsAudioInputDevice::numInputPortsTotal = 0;
+
+
+////////// Mixer and AudioInputPort implementation //////////
+
+Mixer::Mixer()
+  : hMixer(NULL), dwRecLineID(0), numPorts(0), ports(NULL) {
+}
+
+Mixer::~Mixer() {
+  delete[] ports;
+}
+
+void Mixer::open(unsigned numChannels, unsigned samplingFrequency, unsigned granularityInMS) {
+  HMIXER newHMixer = NULL;
+  do {
+    MIXERCAPS mc;
+    if (mixerGetDevCaps(index, &mc, sizeof mc) != MMSYSERR_NOERROR) break;
+
+    #ifdef UNICODE
+    // Copy the mixer name:
+        wcstombs(name, mc.szPname, MAXPNAMELEN);
+    #else
+        strncpy(name, mc.szPname, MAXPNAMELEN);
+    #endif
+
+    // Find the correct line for this mixer:
+    unsigned i, uWavIn;
+    unsigned nWavIn = waveInGetNumDevs();
+    for (i = 0; i < nWavIn; ++i) {
+      WAVEINCAPS wic;
+      if (waveInGetDevCaps(i, &wic, sizeof wic) != MMSYSERR_NOERROR) continue;
+
+      MIXERLINE ml;
+      ml.cbStruct = sizeof ml;
+      ml.Target.dwType  = MIXERLINE_TARGETTYPE_WAVEIN;
+
+    #ifdef UNICODE
+          wcsncpy(ml.Target.szPname, wic.szPname, MAXPNAMELEN);
+    #else
+          strncpy(ml.Target.szPname, wic.szPname, MAXPNAMELEN);
+    #endif
+
+      ml.Target.vDriverVersion = wic.vDriverVersion;
+      ml.Target.wMid = wic.wMid;
+      ml.Target.wPid = wic.wPid;
+
+      if (mixerGetLineInfo((HMIXEROBJ)index, &ml, MIXER_GETLINEINFOF_TARGETTYPE/*|MIXER_OBJECTF_MIXER*/) == MMSYSERR_NOERROR) {
+				// this is the right line
+	uWavIn = i;
+	dwRecLineID = ml.dwLineID;
+	break;
+      }
+    }
+    if (i >= nWavIn) break; // error: we couldn't find the right line
+
+    if (mixerOpen(&newHMixer, index, (unsigned long)NULL, (unsigned long)NULL, MIXER_OBJECTF_MIXER) != MMSYSERR_NOERROR) break;
+    if (newHMixer == NULL) break;
+
+    // Sanity check: re-call "mixerGetDevCaps()" using the mixer device handle:
+    if (mixerGetDevCaps((UINT)newHMixer, &mc, sizeof mc) != MMSYSERR_NOERROR) break;
+    if (mc.cDestinations < 1) break; // error: this mixer has no destinations
+
+	if (!WindowsAudioInputDevice_common::openWavInPort(uWavIn, numChannels, samplingFrequency, granularityInMS)) break;
+
+    hMixer = newHMixer;
+    return;
+  } while (0);
+
+  // An error occurred:
+  close();
+}
+
+void Mixer::open() {
+  open(1, 8000, 20);
+}
+
+void Mixer::getPortsInfo() {
+  MIXERCAPS mc;
+  mixerGetDevCaps((UINT)hMixer, &mc, sizeof mc);
+
+  MIXERLINE mlt;
+  unsigned i;
+  for (i = 0; i < mc.cDestinations; ++i) {
+    memset(&mlt, 0, sizeof mlt);
+    mlt.cbStruct = sizeof mlt;
+    mlt.dwDestination = i;
+    if (mixerGetLineInfo((HMIXEROBJ)hMixer, &mlt, MIXER_GETLINEINFOF_DESTINATION) != MMSYSERR_NOERROR) continue;
+    if (mlt.dwLineID == dwRecLineID) break; // this is the destination we're interested in
+  }
+  ports = new AudioInputPort[mlt.cConnections];
+
+  numPorts = mlt.cConnections;
+  for (i = 0; i < numPorts; ++i) {
+    MIXERLINE mlc;
+    memcpy(&mlc, &mlt, sizeof mlc);
+    mlc.dwSource = i;
+    mixerGetLineInfo((HMIXEROBJ)hMixer, &mlc, MIXER_GETLINEINFOF_SOURCE/*|MIXER_OBJECTF_HMIXER*/);
+    ports[i].tag = mlc.dwLineID;
+	ports[i].dwComponentType = mlc.dwComponentType;
+#ifdef UNICODE
+    wcstombs(ports[i].name, mlc.szName, MIXER_LONG_NAME_CHARS);
+#else
+    strncpy(ports[i].name, mlc.szName, MIXER_LONG_NAME_CHARS);
+#endif
+  }
+
+  // Make the microphone the first port in the list:
+  for (i = 1; i < numPorts; ++i) {
+#ifdef OLD_MICROPHONE_TESTING_CODE
+    if (_strnicmp("mic", ports[i].name, 3) == 0 ||
+	_strnicmp("mik", ports[i].name, 3) == 0) {
+#else
+	if (ports[i].dwComponentType == MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE) {
+#endif
+      AudioInputPort tmp = ports[0];
+      ports[0] = ports[i];
+      ports[i] = tmp;
+    }
+  }
+}
+
+Boolean Mixer::enableInputPort(unsigned portIndex, char const*& errReason, MMRESULT& errCode) {
+  errReason = NULL; // unless there's an error
+  AudioInputPort& port = ports[portIndex];
+
+  MIXERCONTROL mc;
+  mc.cMultipleItems = 1; // in case it doesn't get set below
+  MIXERLINECONTROLS mlc;
+#if 0 // the following doesn't seem to be needed, and can fail:
+  mlc.cbStruct = sizeof mlc;
+  mlc.pamxctrl = &mc;
+  mlc.cbmxctrl = sizeof (MIXERCONTROL);
+  mlc.dwLineID = port.tag;
+  mlc.dwControlType = MIXERCONTROL_CONTROLTYPE_VOLUME;
+  if ((errCode = mixerGetLineControls((HMIXEROBJ)hMixer, &mlc, MIXER_GETLINECONTROLSF_ONEBYTYPE/*|MIXER_OBJECTF_HMIXER*/)) != MMSYSERR_NOERROR) {
+    errReason = "mixerGetLineControls()";
+    return False;
+  }
+#endif
+
+  MIXERLINE ml;
+  memset(&ml, 0, sizeof (MIXERLINE));
+  ml.cbStruct = sizeof (MIXERLINE);
+  ml.dwLineID = port.tag;
+  if ((errCode = mixerGetLineInfo((HMIXEROBJ)hMixer, &ml, MIXER_GETLINEINFOF_LINEID)) != MMSYSERR_NOERROR) {
+    errReason = "mixerGetLineInfo()1";
+    return False;
+  }
+
+  
+
+  #ifdef UNICODE
+    wchar_t portname[MIXER_LONG_NAME_CHARS+1];
+    wcsncpy(portname, ml.szName, MIXER_LONG_NAME_CHARS);
+  #else
+    char portname[MIXER_LONG_NAME_CHARS+1];
+    strncpy(portname, ml.szName, MIXER_LONG_NAME_CHARS);
+  #endif
+
+  memset(&ml, 0, sizeof (MIXERLINE));
+  ml.cbStruct = sizeof (MIXERLINE);
+  ml.dwLineID = dwRecLineID;
+  if ((errCode = mixerGetLineInfo((HMIXEROBJ)hMixer, &ml, MIXER_GETLINEINFOF_LINEID/*|MIXER_OBJECTF_HMIXER*/)) != MMSYSERR_NOERROR) {
+    errReason = "mixerGetLineInfo()2";
+    return False;
+  }
+
+  // Get Mixer/MUX control information (need control id to set and get control details)
+  mlc.cbStruct = sizeof mlc;
+  mlc.dwLineID = ml.dwLineID;
+  mlc.cControls = 1;
+  mc.cbStruct = sizeof mc; // Needed???#####
+  mc.dwControlID = 0xDEADBEEF; // For testing #####
+  mlc.pamxctrl = &mc;
+  mlc.cbmxctrl = sizeof mc;
+  mlc.dwControlType = MIXERCONTROL_CONTROLTYPE_MUX; // Single Select
+  if ((errCode = mixerGetLineControls((HMIXEROBJ)hMixer, &mlc, MIXER_GETLINECONTROLSF_ONEBYTYPE/*|MIXER_OBJECTF_HMIXER*/)) != MMSYSERR_NOERROR) {
+    mlc.dwControlType = MIXERCONTROL_CONTROLTYPE_MIXER; // Multiple Select
+    mixerGetLineControls((HMIXEROBJ)hMixer, &mlc, MIXER_GETLINECONTROLSF_ONEBYTYPE/*|MIXER_OBJECTF_HMIXER*/);
+  }
+
+  unsigned matchLine = 0;
+  if (mc.cMultipleItems > 1) {
+    // Before getting control, we need to know which line to grab.
+    // We figure this out by listing the lines, and comparing names:
+    MIXERCONTROLDETAILS mcd;
+    mcd.cbStruct = sizeof mcd;
+    mcd.cChannels = ml.cChannels;
+    mcd.cMultipleItems = mc.cMultipleItems;
+    MIXERCONTROLDETAILS_LISTTEXT* mcdlText = new MIXERCONTROLDETAILS_LISTTEXT[mc.cMultipleItems];
+    mcd.cbDetails = sizeof (MIXERCONTROLDETAILS_LISTTEXT);
+    mcd.paDetails = mcdlText;
+
+    if (mc.dwControlID != 0xDEADBEEF) { // we know the control id for real
+      mcd.dwControlID = mc.dwControlID;
+      if ((errCode = mixerGetControlDetails((HMIXEROBJ)hMixer, &mcd, MIXER_GETCONTROLDETAILSF_LISTTEXT/*|MIXER_OBJECTF_HMIXER*/)) != MMSYSERR_NOERROR) {
+	delete[] mcdlText;
+	errReason = "mixerGetControlDetails()1";
+	return False;
+      }
+    } else {
+      // Hack: We couldn't find a MUX or MIXER control, so try to guess the control id:
+      for (mc.dwControlID = 0; mc.dwControlID < 32; ++mc.dwControlID) {
+	mcd.dwControlID = mc.dwControlID;
+	if ((errCode = mixerGetControlDetails((HMIXEROBJ)hMixer, &mcd, MIXER_GETCONTROLDETAILSF_LISTTEXT/*|MIXER_OBJECTF_HMIXER*/)) == MMSYSERR_NOERROR) break;
+      }
+      if (mc.dwControlID == 32) { // unable to guess mux/mixer control id
+	delete[] mcdlText;
+	errReason = "mixerGetControlDetails()2";
+	return False;
+      }
+    }
+
+    #ifdef UNICODE
+    for (unsigned i = 0; i < mcd.cMultipleItems; ++i) {
+        if (wcscmp(mcdlText[i].szName, portname) == 0) {
+	    matchLine = i;
+	    break;
+        }
+    }
+    #else
+    for (unsigned i = 0; i < mcd.cMultipleItems; ++i) {
+        if (strcmp(mcdlText[i].szName, portname) == 0) {
+	    matchLine = i;
+	    break;
+        }
+    }
+    #endif
+    
+    delete[] mcdlText;
+  }
+
+  // Now get control itself:
+  MIXERCONTROLDETAILS mcd;
+  mcd.cbStruct = sizeof mcd;
+  mcd.dwControlID = mc.dwControlID;
+  mcd.cChannels = ml.cChannels;
+  mcd.cMultipleItems = mc.cMultipleItems;
+  MIXERCONTROLDETAILS_BOOLEAN* mcdbState = new MIXERCONTROLDETAILS_BOOLEAN[mc.cMultipleItems];
+  mcd.paDetails = mcdbState;
+  mcd.cbDetails = sizeof (MIXERCONTROLDETAILS_BOOLEAN);
+
+  if ((errCode = mixerGetControlDetails((HMIXEROBJ)hMixer, &mcd, MIXER_GETCONTROLDETAILSF_VALUE/*|MIXER_OBJECTF_HMIXER*/)) != MMSYSERR_NOERROR) {
+    delete[] mcdbState;
+    errReason = "mixerGetControlDetails()3";
+    return False;
+  }
+
+  for (unsigned j = 0; j < mcd.cMultipleItems; ++j) {
+    mcdbState[j].fValue = (j == matchLine);
+  }
+
+  if ((errCode = mixerSetControlDetails((HMIXEROBJ)hMixer, &mcd, MIXER_OBJECTF_HMIXER)) != MMSYSERR_NOERROR) {
+    delete[] mcdbState;
+    errReason = "mixerSetControlDetails()";
+    return False;
+  }
+  delete[] mcdbState;
+
+  return True;
+}
+
+
+void Mixer::close() {
+  WindowsAudioInputDevice_common::waveIn_close();
+  if (hMixer != NULL) mixerClose(hMixer);
+  hMixer = NULL; dwRecLineID = 0;
+}
diff --git a/WindowsAudioInputDevice/WindowsAudioInputDevice_mixer.hh b/WindowsAudioInputDevice/WindowsAudioInputDevice_mixer.hh
new file mode 100644
index 0000000..7ae4355
--- /dev/null
+++ b/WindowsAudioInputDevice/WindowsAudioInputDevice_mixer.hh
@@ -0,0 +1,57 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Windows implementation of a generic audio input device
+// This version uses Windows' built-in software mixer.
+// C++ header
+//
+// To use this, call "AudioInputDevice::createNew()".
+// You can also call "AudioInputDevice::getPortNames()" to get a list
+// of port names.
+
+#ifndef _WINDOWS_AUDIO_INPUT_DEVICE_MIXER_HH
+#define _WINDOWS_AUDIO_INPUT_DEVICE_MIXER_HH
+
+#ifndef _WINDOWS_AUDIO_INPUT_DEVICE_COMMON_HH
+#include "WindowsAudioInputDevice_common.hh"
+#endif
+
+class WindowsAudioInputDevice: public WindowsAudioInputDevice_common {
+private:
+  friend class AudioInputDevice;
+  WindowsAudioInputDevice(UsageEnvironment& env, int inputPortNumber,
+	unsigned char bitsPerSample, unsigned char numChannels,
+	unsigned samplingFrequency, unsigned granularityInMS,
+	Boolean& success);
+	// called only by createNew()
+
+  virtual ~WindowsAudioInputDevice();
+
+  static void initializeIfNecessary();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean setInputPort(int portIndex);
+
+private:
+  static unsigned numMixers;
+  static class Mixer* ourMixers;
+  static unsigned numInputPortsTotal;
+
+  int fCurMixerId;
+};
+
+#endif
diff --git a/WindowsAudioInputDevice/WindowsAudioInputDevice_noMixer.cpp b/WindowsAudioInputDevice/WindowsAudioInputDevice_noMixer.cpp
new file mode 100644
index 0000000..f9d9058
--- /dev/null
+++ b/WindowsAudioInputDevice/WindowsAudioInputDevice_noMixer.cpp
@@ -0,0 +1,182 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 2001-2004 Live Networks, Inc.  All rights reserved.
+// Windows implementation of a generic audio input device
+// This version does not use Windows' built-in software mixer.
+// Implementation
+
+#include <WindowsAudioInputDevice_noMixer.hh>
+
+////////// AudioInputPort definition //////////
+
+class AudioInputPort {
+public:
+  void open(unsigned numChannels, unsigned samplingFrequency, unsigned granularityInMS);
+  void open(); // open with default parameters
+  void close();
+
+public:
+  int index;
+  char name[MAXPNAMELEN];
+};
+
+
+////////// AudioInputDevice (remaining) implementation //////////
+
+AudioInputDevice*
+AudioInputDevice::createNew(UsageEnvironment& env, int inputPortNumber,
+			    unsigned char bitsPerSample,
+			    unsigned char numChannels,
+			    unsigned samplingFrequency,
+			    unsigned granularityInMS) {
+  Boolean success;
+  WindowsAudioInputDevice* newSource
+    = new WindowsAudioInputDevice(env, inputPortNumber,
+				  bitsPerSample, numChannels,
+				  samplingFrequency, granularityInMS,
+				  success);
+  if (!success) {delete newSource; newSource = NULL;}
+
+  return newSource;
+}
+
+AudioPortNames* AudioInputDevice::getPortNames() {
+  WindowsAudioInputDevice::initializeIfNecessary();
+
+  AudioPortNames* portNames = new AudioPortNames;
+  portNames->numPorts = WindowsAudioInputDevice::numAudioInputPorts;
+  portNames->portName = new char*[WindowsAudioInputDevice::numAudioInputPorts];
+
+  for (unsigned i = 0; i < WindowsAudioInputDevice::numAudioInputPorts; ++i) {
+    AudioInputPort& audioInputPort = WindowsAudioInputDevice::ourAudioInputPorts[i];
+
+    portNames->portName[i] = strDup(audioInputPort.name);
+  }
+
+  return portNames;
+}
+
+
+////////// WindowsAudioInputDevice implementation //////////
+
+WindowsAudioInputDevice
+::WindowsAudioInputDevice(UsageEnvironment& env, int inputPortNumber,
+			  unsigned char bitsPerSample,
+			  unsigned char numChannels,
+			  unsigned samplingFrequency,
+			  unsigned granularityInMS,
+			  Boolean& success)
+  : WindowsAudioInputDevice_common(env, inputPortNumber,
+		bitsPerSample, numChannels, samplingFrequency, granularityInMS) {
+	success = initialSetInputPort(inputPortNumber);
+}
+
+WindowsAudioInputDevice::~WindowsAudioInputDevice() {
+  if (fCurPortIndex >= 0) ourAudioInputPorts[fCurPortIndex].close();
+
+  delete[] ourAudioInputPorts; ourAudioInputPorts = NULL;
+  numAudioInputPorts = 0;
+}
+
+void WindowsAudioInputDevice::initializeIfNecessary() {
+  if (ourAudioInputPorts != NULL) return; // we've already been initialized
+  numAudioInputPorts = waveInGetNumDevs();
+  ourAudioInputPorts = new AudioInputPort[numAudioInputPorts];
+
+  // Initialize each audio input port
+  for (unsigned i = 0; i < numAudioInputPorts; ++i) {
+    AudioInputPort& port = ourAudioInputPorts[i];
+    port.index = i;
+    port.open(); // to set the port name
+    port.close();
+  }
+}
+
+Boolean WindowsAudioInputDevice::setInputPort(int portIndex) {
+  initializeIfNecessary();
+
+  if (portIndex < 0 || portIndex >= (int)numAudioInputPorts) { // bad index
+    envir().setResultMsg("Bad input port index\n");
+    return False;
+  }
+
+  // Check that this port is allowed:
+  if (allowedDeviceNames != NULL) {
+	  int i;
+	  for (i = 0; allowedDeviceNames[i] != NULL; ++i) {
+		  if (strncmp(ourAudioInputPorts[portIndex].name, allowedDeviceNames[i],
+			  strlen(allowedDeviceNames[i])) == 0) {
+			  // The allowed device name is a prefix of this port's name
+			  break; // this port is allowed
+		  }
+	  }
+	  if (allowedDeviceNames[i] == NULL) { // this port is not on the allowed list
+		envir().setResultMsg("Access to this audio device is not allowed\n");
+		return False;
+	  }
+  }
+
+  if (portIndex != fCurPortIndex) {
+    // The port has changed, so close the old one and open the new one:
+    if (fCurPortIndex >= 0) ourAudioInputPorts[fCurPortIndex].close();;
+    fCurPortIndex = portIndex;
+    ourAudioInputPorts[fCurPortIndex].open(fNumChannels, fSamplingFrequency, fGranularityInMS);
+  }
+  fCurPortIndex = portIndex;
+  return True;
+}
+
+unsigned WindowsAudioInputDevice::numAudioInputPorts = 0;
+
+AudioInputPort* WindowsAudioInputDevice::ourAudioInputPorts = NULL;
+
+
+////////// AudioInputPort implementation //////////
+
+void AudioInputPort::open(unsigned numChannels, unsigned samplingFrequency, unsigned granularityInMS) {
+  do {
+    // Get the port name:
+    WAVEINCAPS wic;
+    if (waveInGetDevCaps(index, &wic, sizeof wic) != MMSYSERR_NOERROR) {
+	    name[0] = '\0';
+	    break;
+	}
+    
+    #ifdef UNICODE
+    // Copy the mixer name:
+        wcstombs(name, wic.szPname, MAXPNAMELEN);
+    #else
+        strncpy(name, wic.szPname, MAXPNAMELEN);
+    #endif
+
+	if (!WindowsAudioInputDevice_common::openWavInPort(index, numChannels, samplingFrequency, granularityInMS)) break;
+
+    return;
+  } while (0);
+
+  // An error occurred:
+  close();
+}
+
+void AudioInputPort::open() {
+  open(1, 8000, 20);
+}
+
+void AudioInputPort::close() {
+  WindowsAudioInputDevice_common::waveIn_close();
+}
+
+
diff --git a/WindowsAudioInputDevice/WindowsAudioInputDevice_noMixer.hh b/WindowsAudioInputDevice/WindowsAudioInputDevice_noMixer.hh
new file mode 100644
index 0000000..22135d6
--- /dev/null
+++ b/WindowsAudioInputDevice/WindowsAudioInputDevice_noMixer.hh
@@ -0,0 +1,54 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Windows implementation of a generic audio input device
+// This version does not use Windows' built-in software mixer.
+// C++ header
+//
+// To use this, call "AudioInputDevice::createNew()".
+// You can also call "AudioInputDevice::getPortNames()" to get a list
+// of port names.
+
+#ifndef _WINDOWS_AUDIO_INPUT_DEVICE_NOMIXER_HH
+#define _WINDOWS_AUDIO_INPUT_DEVICE_NOMIXER_HH
+
+#ifndef _WINDOWS_AUDIO_INPUT_DEVICE_COMMON_HH
+#include "WindowsAudioInputDevice_common.hh"
+#endif
+
+class WindowsAudioInputDevice: public WindowsAudioInputDevice_common {
+private:
+  friend class AudioInputDevice;
+  WindowsAudioInputDevice(UsageEnvironment& env, int inputPortNumber,
+	unsigned char bitsPerSample, unsigned char numChannels,
+	unsigned samplingFrequency, unsigned granularityInMS,
+	Boolean& success);
+	// called only by createNew()
+
+  virtual ~WindowsAudioInputDevice();
+
+  static void initializeIfNecessary();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean setInputPort(int portIndex);
+
+private:
+  static unsigned numAudioInputPorts;
+  static class AudioInputPort* ourAudioInputPorts;
+};
+
+#endif
diff --git a/WindowsAudioInputDevice/showAudioInputPorts.cpp b/WindowsAudioInputDevice/showAudioInputPorts.cpp
new file mode 100644
index 0000000..37bd438
--- /dev/null
+++ b/WindowsAudioInputDevice/showAudioInputPorts.cpp
@@ -0,0 +1,35 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A program that prints out this computer's audio input ports
+
+#include "AudioInputDevice.hh"
+#include <stdio.h>
+
+int main(int argc, char** argv) {
+	AudioPortNames* portNames = AudioInputDevice::getPortNames();
+	if (portNames == NULL) {
+		fprintf(stderr, "AudioInputDevice::getPortNames() failed!\n");
+		exit(1);
+	}
+
+	printf("%d available audio input ports:\n", portNames->numPorts);
+	for (unsigned i = 0; i < portNames->numPorts; ++i) {
+		printf("%d\t%s\n", i, portNames->portName[i]);
+	}
+
+  return 0;
+}
diff --git a/config.armeb-uclibc b/config.armeb-uclibc
new file mode 100644
index 0000000..a88289f
--- /dev/null
+++ b/config.armeb-uclibc
@@ -0,0 +1,19 @@
+CROSS_COMPILE=         armeb-linux-uclibc-
+COMPILE_OPTS =          $(INCLUDES) -I/usr/local/include -I. -Os -DSOCKLEN_T=socklen_t -DNO_SSTREAM=1 -D
+LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
+C =                    c
+C_COMPILER =           $(CROSS_COMPILE)gcc
+C_FLAGS =              $(COMPILE_OPTS)
+CPP =                  cpp
+CPLUSPLUS_COMPILER =   $(CROSS_COMPILE)g++
+CPLUSPLUS_FLAGS =      $(COMPILE_OPTS) -Wall -DBSD=1
+OBJ =                  o
+LINK =                 $(CROSS_COMPILE)gcc -o
+LINK_OPTS =            -L.
+CONSOLE_LINK_OPTS =    $(LINK_OPTS)
+LIBRARY_LINK =         $(CROSS_COMPILE)ar cr 
+LIBRARY_LINK_OPTS =    
+LIB_SUFFIX =                   a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.armlinux b/config.armlinux
new file mode 100644
index 0000000..5a7f8a8
--- /dev/null
+++ b/config.armlinux
@@ -0,0 +1,18 @@
+CROSS_COMPILE?=		arm-elf-
+COMPILE_OPTS =		$(INCLUDES) -I/usr/local/include -I. -O2 -DSOCKLEN_T=socklen_t -DNO_SSTREAM=1 -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
+C =			c
+C_COMPILER =		$(CROSS_COMPILE)gcc
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	$(CROSS_COMPILE)g++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall -DBSD=1
+OBJ =			o
+LINK =			$(CROSS_COMPILE)g++ -o
+LINK_OPTS =		
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		$(CROSS_COMPILE)ar cr 
+LIBRARY_LINK_OPTS =	$(LINK_OPTS)
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.avr32-linux b/config.avr32-linux
new file mode 100644
index 0000000..db89d9b
--- /dev/null
+++ b/config.avr32-linux
@@ -0,0 +1,15 @@
+CROSS_COMPILE=        avr32-linux-uclibc-
+COMPILE_OPTS =        -I/usr/local/include -Os  $(INCLUDES) -msoft-float -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -DSOCKLEN_T=socklen_t -DNO_SSTREAM=1 C =            c
+C_COMPILER =        $(CROSS_COMPILE)gcc
+C_FLAGS =        $(COMPILE_OPTS)
+CPP =            cpp
+CPLUSPLUS_COMPILER =    $(CROSS_COMPILE)c++
+CPLUSPLUS_FLAGS =    $(COMPILE_OPTS) -Wall -fuse-cxa-atexit -DBSD=1 OBJ =            o
+LINK =            $(CROSS_COMPILE)c++ -o
+LINK_OPTS =         
+CONSOLE_LINK_OPTS =    $(LINK_OPTS)
+LIBRARY_LINK =        $(CROSS_COMPILE)ar cr LIBRARY_LINK_OPTS =     
+LIB_SUFFIX =        a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.bfin-linux-uclibc b/config.bfin-linux-uclibc
new file mode 100644
index 0000000..a316d4c
--- /dev/null
+++ b/config.bfin-linux-uclibc
@@ -0,0 +1,18 @@
+CROSS_COMPILER     = bfin-linux-uclibc-
+COMPILE_OPTS       = $(INCLUDES) -I/usr/local/include -I. -DSOCKLEN_T=socklen_t -D_LARGEFILE_SOURCE=1 -DUCLINUX -D_FILE_OFFSET_BITS=64
+C                  = c
+C_COMPILER         = $(CROSS_COMPILER)gcc
+C_FLAGS            = $(COMPILE_OPTS) -Wall
+CPP                = cpp
+CPLUSPLUS_COMPILER = $(CROSS_COMPILER)g++
+CPLUSPLUS_FLAGS    = $(COMPILE_OPTS) -Wall
+OBJ                = o
+LINK               = $(CROSS_COMPILER)g++ -o
+LINK_OPTS          = -L.
+CONSOLE_LINK_OPTS  = $(LINK_OPTS)
+LIBRARY_LINK       = $(CROSS_COMPILER)ar cr 
+LIBRARY_LINK_OPTS  = 
+LIB_SUFFIX         = a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.bfin-uclinux b/config.bfin-uclinux
new file mode 100644
index 0000000..9424110
--- /dev/null
+++ b/config.bfin-uclinux
@@ -0,0 +1,18 @@
+CROSS_COMPILER=        bfin-uclinux-
+COMPILE_OPTS =        $(INCLUDES) -I/usr/local/include -I. -DSOCKLEN_T=socklen_t -D_LARGEFILE_SOURCE=1 -DUCLINUX -D_FILE_OFFSET_BITS=64
+C =            c
+C_COMPILER =        $(CROSS_COMPILER)gcc
+C_FLAGS =        $(COMPILE_OPTS) -Wall
+CPP =            cpp
+CPLUSPLUS_COMPILER =    $(CROSS_COMPILER)g++
+CPLUSPLUS_FLAGS =    $(COMPILE_OPTS) -Wall
+OBJ =            o
+LINK =            $(CROSS_COMPILER)g++ -Wl,-elf2flt -o
+LINK_OPTS =        -L.
+CONSOLE_LINK_OPTS =    $(LINK_OPTS)
+LIBRARY_LINK =        $(CROSS_COMPILER)ar cr 
+LIBRARY_LINK_OPTS =    
+LIB_SUFFIX =            a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.bsplinux b/config.bsplinux
new file mode 100644
index 0000000..8290ce5
--- /dev/null
+++ b/config.bsplinux
@@ -0,0 +1,18 @@
+CROSS_COMPILE=
+COMPILE_OPTS =          $(INCLUDES) -I. -I/usr/local/include -O2 -DSOCKLEN_T=socklen_t -DNO_SSTREAM=1 -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
+C =                     c
+C_COMPILER =            $(CROSS_COMPILE)ecc
+C_FLAGS =               $(COMPILE_OPTS)
+CPP =                   cpp
+CPLUSPLUS_COMPILER =    $(CROSS_COMPILE)e++
+CPLUSPLUS_FLAGS =       $(COMPILE_OPTS) -Wall -DBSD=1
+OBJ =                   o
+LINK =                  $(CROSS_COMPILE)e++ -o
+LINK_OPTS =             -L.
+CONSOLE_LINK_OPTS =     $(LINK_OPTS)
+LIBRARY_LINK =          $(CROSS_COMPILE)eld -o
+LIBRARY_LINK_OPTS =     $(LINK_OPTS) -r -Bstatic
+LIB_SUFFIX =                    a
+LIBS_FOR_CONSOLE_APPLICATION = -lm -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.cris-axis-linux-gnu b/config.cris-axis-linux-gnu
new file mode 100644
index 0000000..ce1195f
--- /dev/null
+++ b/config.cris-axis-linux-gnu
@@ -0,0 +1,23 @@
+# Note: AXIS_TOP_DIR is assumed to already be set in your environment.
+# You can set this using the "init_env" script.
+# See http://developer.axis.com/doc/software/apps/apps-howto.html
+# for more information.
+AXIS_DIR = $(AXIS_TOP_DIR)/target/cris-axis-linux-gnu
+COMPILE_OPTS = $(INCLUDES) -I. -mlinux -isystem $(AXIS_DIR)/include -I/usr/local/include -Wall -O2 -DSOCKLEN_T=socklen_t -DCRIS -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
+C =			c
+C_COMPILER =		gcc-cris
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++-cris
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wno-ctor-dtor-privacy -ansi -pipe
+OBJ =			o
+LINK =			c++-cris -static -o
+AXIS_LINK_OPTS =	-L$(AXIS_DIR)/lib
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS) -L$(AXIS_DIR)/lib -mlinux
+LIBRARY_LINK =		ld-cris -mcrislinux -o
+LIBRARY_LINK_OPTS =	$(LINK_OPTS) -r -Bstatic
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.cygwin b/config.cygwin
new file mode 100644
index 0000000..2e7a9c0
--- /dev/null
+++ b/config.cygwin
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -I/usr/local/include -I. -O -DSOCKLEN_T=socklen_t -DNEWLOCALE_NOT_USED=1
+C =			c
+C_COMPILER =		gcc
+C_FLAGS =		$(COMPILE_OPTS) -DUSE_OUR_BZERO=1 -D__CYGWIN__
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall -DBSD=1
+OBJ =			o
+LINK =			c++ -o 
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		ld -o 
+LIBRARY_LINK_OPTS =	$(LINK_OPTS) -r -Bstatic
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.cygwin-for-vlc b/config.cygwin-for-vlc
new file mode 100644
index 0000000..b1e19e8
--- /dev/null
+++ b/config.cygwin-for-vlc
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -I/usr/local/include -I. -O -DSOCKLEN_T=socklen_t -DNEWLOCALE_NOT_USED=1
+C =			c
+C_COMPILER =		gcc
+C_FLAGS =		$(COMPILE_OPTS) -DUSE_OUR_BZERO=1 -D_WIN32 -mno-cygwin
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall -DBSD=1 -D_WIN32 -Wno-deprecated -mno-cygwin
+OBJ =			o
+LINK =			c++ -o
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		ld -o
+LIBRARY_LINK_OPTS =	$(LINK_OPTS) -r -Bstatic
+LIB_SUFFIX =		a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.freebsd b/config.freebsd
new file mode 100644
index 0000000..00cfe21
--- /dev/null
+++ b/config.freebsd
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -I/usr/local/include -I. -O -DBSD=1 -DNEWLOCALE_NOT_USED=1 -DSOCKLEN_T=socklen_t -DHAVE_SOCKADDR_LEN=1
+C =			c
+C_COMPILER =		cc
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall
+OBJ =			o
+LINK =			c++ -o
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		ar cr 
+LIBRARY_LINK_OPTS =	
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.freebsd-no-openssl b/config.freebsd-no-openssl
new file mode 100644
index 0000000..2170518
--- /dev/null
+++ b/config.freebsd-no-openssl
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -I. -O -DBSD=1 -DNEWLOCALE_NOT_USED=1 -DSOCKLEN_T=socklen_t -DHAVE_SOCKADDR_LEN=1 -DNO_OPENSSL=1
+C =			c
+C_COMPILER =		cc
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall
+OBJ =			o
+LINK =			c++ -o
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		ar cr 
+LIBRARY_LINK_OPTS =	
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION =
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.iphone-simulator b/config.iphone-simulator
new file mode 100644
index 0000000..ef7660a
--- /dev/null
+++ b/config.iphone-simulator
@@ -0,0 +1,28 @@
+# **Note: You must install the relevant "Command line tools (OSX *.*) for Xcode - Xcode *.*"
+# for this configuration file to work.
+
+# Change the following version number, if necessary, before running "genMakefiles iphone-simulator"
+IOS_VERSION = 8.3
+MIN_IOS_VERSION =  7.0
+
+DEVELOPER_PATH = /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer
+TOOL_PATH = $(DEVELOPER_PATH)/usr/bin
+SDK_PATH = $(DEVELOPER_PATH)/SDKs
+SDK = $(SDK_PATH)/iPhoneSimulator$(IOS_VERSION).sdk
+COMPILE_OPTS =          $(INCLUDES) -I/usr/local/include -I. $(EXTRA_LDFLAGS) -DBSD=1 -O2 -DSOCKLEN_T=socklen_t -DHAVE_SOCKADDR_LEN=1 -miphoneos-version-min=$(MIN_IOS_VERSION) -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64 -fPIC -arch i386 --sysroot=$(SDK) -isysroot $(SDK)
+C =                     c
+C_COMPILER =            /usr/bin/xcrun clang
+C_FLAGS =               $(COMPILE_OPTS)
+CPP =                   cpp
+CPLUSPLUS_COMPILER =    /usr/bin/xcrun clang
+CPLUSPLUS_FLAGS =       $(COMPILE_OPTS) -Wall
+OBJ =                   o
+LINK =                  /usr/bin/xcrun clang -o
+LINK_OPTS =             -L. -arch i386 -miphoneos-version-min=$(MIN_IOS_VERSION) --sysroot=$(SDK) -isysroot -L$(SDK)/usr/lib/system -I$(SDK)/usr/lib /usr/lib/libc++.dylib
+CONSOLE_LINK_OPTS =     $(LINK_OPTS)
+LIBRARY_LINK =          /usr/bin/xcrun libtool -static -o 
+LIBRARY_LINK_OPTS =
+LIB_SUFFIX =            a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.iphoneos b/config.iphoneos
new file mode 100644
index 0000000..5df689c
--- /dev/null
+++ b/config.iphoneos
@@ -0,0 +1,27 @@
+# **Note: You must install the relevant "Command line tools (OSX *.*) for Xcode - Xcode *.*"
+# for this configuration file to work.
+#
+# Change the following version number, if necessary, before running "genMakefiles iphoneos"
+IOS_VERSION = 8.3
+
+DEVELOPER_PATH =  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer
+TOOL_PATH = $(DEVELOPER_PATH)/usr/bin
+SDK_PATH = $(DEVELOPER_PATH)/SDKs
+SDK = $(SDK_PATH)/iPhoneOS$(IOS_VERSION).sdk
+COMPILE_OPTS =          $(INCLUDES) -I/usr/local/include -I. $(EXTRA_LDFLAGS) -DBSD=1 -O2 -DSOCKLEN_T=socklen_t -DHAVE_SOCKADDR_LEN=1 -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64 -fPIC -arch armv7 --sysroot=$(SDK)
+C =                     c
+C_COMPILER =            /usr/bin/xcrun clang
+C_FLAGS =               $(COMPILE_OPTS)
+CPP =                   cpp
+CPLUSPLUS_COMPILER =    /usr/bin/xcrun clang
+CPLUSPLUS_FLAGS =       $(COMPILE_OPTS) -Wall
+OBJ =                   o
+LINK =                  /usr/bin/xcrun clang -o 
+LINK_OPTS =             -v -L. -arch armv7 --sysroot=$(SDK) -L$(SDK)/usr/lib/system /usr/lib/libc++.dylib
+CONSOLE_LINK_OPTS =     $(LINK_OPTS)
+LIBRARY_LINK =          /usr/bin/xcrun libtool -static -o 
+LIBRARY_LINK_OPTS =
+LIB_SUFFIX =            a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE = 
diff --git a/config.linux b/config.linux
new file mode 100644
index 0000000..b4021ef
--- /dev/null
+++ b/config.linux
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -I/usr/local/include -I. -O2 -DSOCKLEN_T=socklen_t -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
+C =			c
+C_COMPILER =		cc
+C_FLAGS =		$(COMPILE_OPTS) $(CPPFLAGS) $(CFLAGS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall -DBSD=1 $(CPPFLAGS) $(CXXFLAGS)
+OBJ =			o
+LINK =			c++ -o
+LINK_OPTS =		-L. $(LDFLAGS)
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		ar cr 
+LIBRARY_LINK_OPTS =	
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.linux-64bit b/config.linux-64bit
new file mode 100644
index 0000000..84b9623
--- /dev/null
+++ b/config.linux-64bit
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -m64  -fPIC -I/usr/local/include -I. -O2 -DSOCKLEN_T=socklen_t -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
+C =			c
+C_COMPILER =		cc
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall -DBSD=1
+OBJ =			o
+LINK =			c++ -o
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		ar cr 
+LIBRARY_LINK_OPTS =	
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.linux-gdb b/config.linux-gdb
new file mode 100644
index 0000000..800e0d3
--- /dev/null
+++ b/config.linux-gdb
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -I/usr/local/include -I. -O -DSOCKLEN_T=socklen_t -g -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
+C =			c
+C_COMPILER =		cc
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall -DBSD=1
+OBJ =			o
+LINK =			c++ -o
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		ar cr 
+LIBRARY_LINK_OPTS =	
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.linux-no-openssl b/config.linux-no-openssl
new file mode 100644
index 0000000..0de38c4
--- /dev/null
+++ b/config.linux-no-openssl
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -I. -O2 -DSOCKLEN_T=socklen_t -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64 -DNO_OPENSSL=1
+C =			c
+C_COMPILER =		cc
+C_FLAGS =		$(COMPILE_OPTS) $(CPPFLAGS) $(CFLAGS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall -DBSD=1 $(CPPFLAGS) $(CXXFLAGS)
+OBJ =			o
+LINK =			c++ -o
+LINK_OPTS =		-L. $(LDFLAGS)
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		ar cr 
+LIBRARY_LINK_OPTS =	
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION =
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.linux-with-shared-libraries b/config.linux-with-shared-libraries
new file mode 100644
index 0000000..faaf227
--- /dev/null
+++ b/config.linux-with-shared-libraries
@@ -0,0 +1,45 @@
+# 'CURRENT':'REVISION':'AGE' are updated - whenever a library changes - as follows:
+# The library code changes, but without any changes to the API (i.e., interfaces) => increment REVISION
+# At least one interface changes, or is removed => CURRENT += 1; REVISION = 0; AGE = 0
+# One or more interfaces were added, but no existing interfaces were changed or removed => CURRENT += 1; REVISION = 0; AGE += 1
+
+libliveMedia_VERSION_CURRENT=78
+libliveMedia_VERSION_REVISION=3
+libliveMedia_VERSION_AGE=0
+libliveMedia_LIB_SUFFIX=so.$(shell expr $(libliveMedia_VERSION_CURRENT) - $(libliveMedia_VERSION_AGE)).$(libliveMedia_VERSION_AGE).$(libliveMedia_VERSION_REVISION)
+
+libBasicUsageEnvironment_VERSION_CURRENT=1
+libBasicUsageEnvironment_VERSION_REVISION=1
+libBasicUsageEnvironment_VERSION_AGE=0
+libBasicUsageEnvironment_LIB_SUFFIX=so.$(shell expr $(libBasicUsageEnvironment_VERSION_CURRENT) - $(libBasicUsageEnvironment_VERSION_AGE)).$(libBasicUsageEnvironment_VERSION_AGE).$(libBasicUsageEnvironment_VERSION_REVISION)
+
+libUsageEnvironment_VERSION_CURRENT=4
+libUsageEnvironment_VERSION_REVISION=0
+libUsageEnvironment_VERSION_AGE=1
+libUsageEnvironment_LIB_SUFFIX=so.$(shell expr $(libUsageEnvironment_VERSION_CURRENT) - $(libUsageEnvironment_VERSION_AGE)).$(libUsageEnvironment_VERSION_AGE).$(libUsageEnvironment_VERSION_REVISION)
+
+libgroupsock_VERSION_CURRENT=10
+libgroupsock_VERSION_REVISION=4
+libgroupsock_VERSION_AGE=2
+libgroupsock_LIB_SUFFIX=so.$(shell expr $(libgroupsock_VERSION_CURRENT) - $(libgroupsock_VERSION_AGE)).$(libgroupsock_VERSION_AGE).$(libgroupsock_VERSION_REVISION)
+#####
+
+COMPILE_OPTS =		$(INCLUDES) -I/usr/local/include -I. -O2 -DSOCKLEN_T=socklen_t -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64 -fPIC
+C =			c
+C_COMPILER =		$(CC)
+C_FLAGS =		$(COMPILE_OPTS) $(CPPFLAGS) $(CFLAGS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	$(CXX)
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall -DBSD=1 $(CPPFLAGS) $(CXXFLAGS)
+OBJ =			o
+LINK =			$(CXX) -o
+LINK_OPTS =		-L. $(LDFLAGS)
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		$(CC) -o 
+SHORT_LIB_SUFFIX =	so.$(shell expr $($(NAME)_VERSION_CURRENT) - $($(NAME)_VERSION_AGE))
+LIB_SUFFIX =	 	$(SHORT_LIB_SUFFIX).$($(NAME)_VERSION_AGE).$($(NAME)_VERSION_REVISION)
+LIBRARY_LINK_OPTS =	-shared -Wl,-soname,$(NAME).$(SHORT_LIB_SUFFIX) $(LDFLAGS)
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
+INSTALL2 =		install_shared_libraries
diff --git a/config.macosx b/config.macosx
new file mode 100644
index 0000000..972757b
--- /dev/null
+++ b/config.macosx
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -I. -I/usr/local/include $(EXTRA_LDFLAGS) -DBSD=1 -O -DSOCKLEN_T=socklen_t -DHAVE_SOCKADDR_LEN=1 -DTIME_BASE=int -DNEED_XLOCALE_H=1
+C =			c
+C_COMPILER =		cc
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall
+OBJ =			o
+LINK =			c++ -o 
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		libtool -s -o 
+LIBRARY_LINK_OPTS =	
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = /usr/lib/libssl.46.dylib /usr/lib/libcrypto.44.dylib
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.macosx-no-openssl b/config.macosx-no-openssl
new file mode 100644
index 0000000..6d73be5
--- /dev/null
+++ b/config.macosx-no-openssl
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -I. -I/usr/local/include $(EXTRA_LDFLAGS) -DBSD=1 -O -DSOCKLEN_T=socklen_t -DHAVE_SOCKADDR_LEN=1 -DTIME_BASE=int -DNEED_XLOCALE_H=1 -DNO_OPENSSL=1
+C =			c
+C_COMPILER =		cc
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall
+OBJ =			o
+LINK =			c++ -o 
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		libtool -s -o 
+LIBRARY_LINK_OPTS =	
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = /usr/lib/libssl.46.dylib /usr/lib/libcrypto.44.dylib
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.mingw b/config.mingw
new file mode 100644
index 0000000..e0106c2
--- /dev/null
+++ b/config.mingw
@@ -0,0 +1,17 @@
+COMPILE_OPTS =         $(INCLUDES) -I/usr/local/include -I. -O -DSOCKLEN_T=int -DLOCALE_NOT_USED
+C =                    c
+C_COMPILER =           $(CC)
+C_FLAGS =              $(COMPILE_OPTS) -DUSE_OUR_BZERO=1 -D__MINGW32__
+CPP =                  cpp
+CPLUSPLUS_COMPILER =   $(CXX)
+CPLUSPLUS_FLAGS =      $(COMPILE_OPTS) -D__MINGW32__ -Wall -Wno-deprecated
+OBJ =                  o
+LINK =                 $(CXX) -o 
+LINK_OPTS =            -L.
+CONSOLE_LINK_OPTS =    $(LINK_OPTS)
+LIBRARY_LINK =         $(LD) -o 
+LIBRARY_LINK_OPTS =    $(LINK_OPTS) -r -Bstatic
+LIB_SUFFIX =                   a
+LIBS_FOR_CONSOLE_APPLICATION = -lws2_32 -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION = -lws2_32
+EXE =
diff --git a/config.openbsd b/config.openbsd
new file mode 100644
index 0000000..7fa50a3
--- /dev/null
+++ b/config.openbsd
@@ -0,0 +1,18 @@
+.SUFFIXES: .cpp
+COMPILE_OPTS =		$(INCLUDES) -I/usr/local/include -I. -DBSD=1 -O -DSOCKLEN_T=socklen_t
+C =			c
+C_COMPILER =		cc
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall -DAIX=1
+OBJ =			o
+LINK =			c++ -o
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		ld -o
+LIBRARY_LINK_OPTS =	$(LINK_OPTS) -r
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION =
+EXE =
diff --git a/config.qnx4 b/config.qnx4
new file mode 100644
index 0000000..52cccdb
--- /dev/null
+++ b/config.qnx4
@@ -0,0 +1,23 @@
+#
+# Requires:
+#  QNX 4.25
+#  Watcom 10.6
+#  TCP/IP 5.0
+#
+COMPILE_OPTS =		$(INCLUDES) -I/usr/local/include -I. -D_QNX4 -DBSD -DSOCKLEN_T=uint32_t -I/usr/watcom/10.6/usr/include
+C =				c
+C_COMPILER =		cc32
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	cc32
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -WC,-xs
+OBJ =			o
+LINK =			cc32 -b -M -N30000 -o
+LINK_OPTS =		-l.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		wlib -n -b -c
+LIBRARY_LINK_OPTS =	$(LINK_OPTS)
+LIB_SUFFIX =			lib
+LIBS_FOR_CONSOLE_APPLICATION = -lsocket -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION = $(LIBS_FOR_CONSOLE_APPLICATION)
+EXE =
diff --git a/config.solaris-32bit b/config.solaris-32bit
new file mode 100644
index 0000000..9956849
--- /dev/null
+++ b/config.solaris-32bit
@@ -0,0 +1,17 @@
+COMPILE_OPTS =		$(INCLUDES) -I/usr/local/include -I. -O -DSOLARIS -DNEWLOCALE_NOT_USED -DSOCKLEN_T=socklen_t
+C =			c
+C_COMPILER =		cc
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	c++
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS) -Wall
+OBJ =			o
+LINK =			c++ -o
+LINK_OPTS =		-L.
+CONSOLE_LINK_OPTS =	$(LINK_OPTS)
+LIBRARY_LINK =		ld -o
+LIBRARY_LINK_OPTS =	$(LINK_OPTS) -r -dn
+LIB_SUFFIX =			a
+LIBS_FOR_CONSOLE_APPLICATION = -lsocket -lnsl -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION = $(LIBS_FOR_CONSOLE_APPLICATION)
+EXE =
diff --git a/config.solaris-64bit b/config.solaris-64bit
new file mode 100644
index 0000000..97f934e
--- /dev/null
+++ b/config.solaris-64bit
@@ -0,0 +1,17 @@
+COMPILE_OPTS =          $(INCLUDES) -m64 -I/usr/local/include -I. -O -DSOLARIS -DNEWLOCALE_NOT_USED -DSOCKLEN_T=socklen_t
+C =                     c
+C_COMPILER =            cc
+C_FLAGS =               $(COMPILE_OPTS)
+CPP =                   cpp
+CPLUSPLUS_COMPILER =    c++
+CPLUSPLUS_FLAGS =       $(COMPILE_OPTS) -Wall
+OBJ =                   o
+LINK =                  c++ -m64 -o 
+LINK_OPTS =             -L.
+CONSOLE_LINK_OPTS =     $(LINK_OPTS)
+LIBRARY_LINK =          ld -o
+LIBRARY_LINK_OPTS =     $(LINK_OPTS) -64 -r -dn
+LIB_SUFFIX =                    a
+LIBS_FOR_CONSOLE_APPLICATION = -lsocket -lnsl -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION = $(LIBS_FOR_CONSOLE_APPLICATION)
+EXE =
diff --git a/config.uClinux b/config.uClinux
new file mode 100644
index 0000000..289fcfc
--- /dev/null
+++ b/config.uClinux
@@ -0,0 +1,20 @@
+CROSS_COMPILE=        arc-linux-uclibc-
+COMPILE_OPTS =        $(INCLUDES) -I/usr/local/include -I. -O2 -DSOCKLEN_T=socklen_t -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
+C =            c
+C_COMPILER =        $(CROSS_COMPILE)gcc
+CFLAGS +=        $(COMPILE_OPTS)
+C_FLAGS = $(CFLAGS)
+CPP =            cpp
+CPLUSPLUS_COMPILER =    $(CROSS_COMPILE)g++
+CPLUSPLUS_FLAGS =    $(COMPILE_OPTS) -Wall -DBSD=1
+CPLUSPLUS_FLAGS += $(CPPFLAGS) -fexceptions
+OBJ =            o
+LINK =            $(CROSS_COMPILE)g++ -o
+LINK_OPTS =        -L. $(LDFLAGS)
+CONSOLE_LINK_OPTS =    $(LINK_OPTS)
+LIBRARY_LINK =        $(CROSS_COMPILE)ar cr 
+LIBRARY_LINK_OPTS =    
+LIB_SUFFIX =            a
+LIBS_FOR_CONSOLE_APPLICATION = $(CXXLIBS) -lssl -lcrypto
+LIBS_FOR_GUI_APPLICATION = $(LIBS_FOR_CONSOLE_APPLICATION)
+EXE =
diff --git a/configure b/configure
new file mode 100755
index 0000000..c5f48b7
--- /dev/null
+++ b/configure
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+echo "Whoa! This software distribution does NOT use the normal Unix \"configure\" mechanism for generating a Makefile.  For instructions on how to build this software, see <http://www.live555.com/liveMedia/>."
+echo "Also, please make sure that you're using the most up-to-date version of the source code - available from <http://www.live555.com/liveMedia/public/>."
diff --git a/fix-makefile b/fix-makefile
new file mode 100755
index 0000000..1b4aeca
--- /dev/null
+++ b/fix-makefile
@@ -0,0 +1,26 @@
+#!/bin/sh
+# the next line restarts using tclsh \
+exec tclsh "$0" "$@"
+
+set makefileName [lindex $argv 0]
+set tmpfileName /tmp/rsftmp
+
+set inFid [open $makefileName r]
+set outFid [open $tmpfileName w]
+
+while {![eof $inFid]} {
+	set line [gets $inFid]
+	if {[string match *\)\$* $line]} {
+		set pos [string first \)\$ $line]
+		set prefix [string range $line 0 $pos]
+		incr pos
+		set suffix [string range $line $pos end]
+		set line $prefix\ $suffix
+	}
+
+	puts $outFid $line
+}
+
+close $inFid
+close $outFid
+file rename -force $tmpfileName $makefileName
diff --git a/genMakefiles b/genMakefiles
new file mode 100755
index 0000000..a139f54
--- /dev/null
+++ b/genMakefiles
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+usage() {
+    echo "Usage: $0 <os-platform>"
+    exit 1
+}
+
+if [ $# -ne 1 ]
+then
+    usage $*
+fi
+
+platform=$1
+subdirs="liveMedia groupsock UsageEnvironment BasicUsageEnvironment testProgs mediaServer proxyServer hlsProxy"
+    
+for subdir in $subdirs
+do
+    /bin/rm -f $subdir/Makefile
+    cat $subdir/Makefile.head config.$platform $subdir/Makefile.tail > $subdir/Makefile
+    chmod a-w $subdir/Makefile
+done
+
+/bin/rm -f Makefile
+cat Makefile.head config.$1 Makefile.tail > Makefile
+chmod a-w Makefile
diff --git a/genWindowsMakefiles b/genWindowsMakefiles
new file mode 100755
index 0000000..5deee12
--- /dev/null
+++ b/genWindowsMakefiles
@@ -0,0 +1,41 @@
+#!/bin/sh
+
+cd liveMedia
+/bin/rm -f liveMedia.mak
+/bin/rm -f Makefile
+cat Makefile.head ../win32config Makefile.tail > liveMedia.mak
+
+cd ../groupsock
+/bin/rm -f groupsock.mak
+/bin/rm -f Makefile
+cat Makefile.head ../win32config Makefile.tail > groupsock.mak
+
+cd ../UsageEnvironment
+/bin/rm -f UsageEnvironment.mak
+/bin/rm -f Makefile
+cat Makefile.head ../win32config Makefile.tail > UsageEnvironment.mak
+
+cd ../BasicUsageEnvironment
+/bin/rm -f BasicUsageEnvironment.mak
+/bin/rm -f Makefile
+cat Makefile.head ../win32config Makefile.tail > BasicUsageEnvironment.mak
+
+cd ../testProgs
+/bin/rm -f testProgs.mak
+/bin/rm -f Makefile
+cat Makefile.head ../win32config Makefile.tail > testProgs.mak
+
+cd ../mediaServer
+/bin/rm -f mediaServer.mak
+/bin/rm -f Makefile
+cat Makefile.head ../win32config Makefile.tail > mediaServer.mak
+
+cd ../proxyServer
+/bin/rm -f proxyServer.mak
+/bin/rm -f Makefile
+cat Makefile.head ../win32config Makefile.tail > proxyServer.mak
+
+cd ../hlsProxy
+/bin/rm -f hlsProxy.mak
+/bin/rm -f Makefile
+cat Makefile.head ../win32config Makefile.tail > hlsProxy.mak
diff --git a/genWindowsMakefiles.cmd b/genWindowsMakefiles.cmd
new file mode 100644
index 0000000..3d1c27c
--- /dev/null
+++ b/genWindowsMakefiles.cmd
@@ -0,0 +1,30 @@
+@Echo OFF
+SETLOCAL
+for %%I in (%0) do %%~dI
+for %%I in (%0) do cd "%%~pI"
+cd liveMedia
+del /Q liveMedia.mak
+type Makefile.head ..\win32config Makefile.tail > liveMedia.mak
+cd ../groupsock
+del /Q groupsock.mak
+type Makefile.head ..\win32config Makefile.tail > groupsock.mak
+cd ../UsageEnvironment
+del /Q UsageEnvironment.mak
+type Makefile.head ..\win32config Makefile.tail > UsageEnvironment.mak
+cd ../BasicUsageEnvironment
+del /Q BasicUsageEnvironment.mak
+type Makefile.head ..\win32config Makefile.tail > BasicUsageEnvironment.mak
+cd ../testProgs
+del /Q testProgs.mak
+type Makefile.head ..\win32config Makefile.tail > testProgs.mak
+cd ../mediaServer
+del /Q mediaServer.mak
+type Makefile.head ..\win32config Makefile.tail > mediaServer.mak
+cd ../proxyServer
+del /Q proxyServer.mak
+type Makefile.head ..\win32config Makefile.tail > proxyServer.mak
+cd ../hlsProxy
+del /Q hlsProxy.mak
+type Makefile.head ..\win32config Makefile.tail > hlsProxy.mak
+
+ENDLOCAL
diff --git a/groupsock/COPYING b/groupsock/COPYING
new file mode 120000
index 0000000..012065c
--- /dev/null
+++ b/groupsock/COPYING
@@ -0,0 +1 @@
+../COPYING
\ No newline at end of file
diff --git a/groupsock/COPYING.LESSER b/groupsock/COPYING.LESSER
new file mode 120000
index 0000000..ce9a3ce
--- /dev/null
+++ b/groupsock/COPYING.LESSER
@@ -0,0 +1 @@
+../COPYING.LESSER
\ No newline at end of file
diff --git a/groupsock/GroupEId.cpp b/groupsock/GroupEId.cpp
new file mode 100644
index 0000000..25d8aa2
--- /dev/null
+++ b/groupsock/GroupEId.cpp
@@ -0,0 +1,49 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// "Group Endpoint Id"
+// Implementation
+
+#include "GroupEId.hh"
+
+
+GroupEId::GroupEId(struct in_addr const& groupAddr,
+		   portNumBits portNum, u_int8_t ttl) {
+  struct in_addr sourceFilterAddr;
+  sourceFilterAddr.s_addr = ~0; // indicates no source filter
+
+  init(groupAddr, sourceFilterAddr, portNum, ttl);
+}
+
+GroupEId::GroupEId(struct in_addr const& groupAddr,
+		   struct in_addr const& sourceFilterAddr,
+		   portNumBits portNum) {
+  init(groupAddr, sourceFilterAddr, portNum, 255);
+}
+
+Boolean GroupEId::isSSM() const {
+  return fSourceFilterAddress.s_addr != netAddressBits(~0);
+}
+
+void GroupEId::init(struct in_addr const& groupAddr,
+		    struct in_addr const& sourceFilterAddr,
+		    portNumBits portNum,
+		    u_int8_t ttl) {
+  fGroupAddress = groupAddr;
+  fSourceFilterAddress = sourceFilterAddr;
+  fPortNum = portNum;
+  fTTL = ttl;
+}
diff --git a/groupsock/Groupsock.cpp b/groupsock/Groupsock.cpp
new file mode 100644
index 0000000..41fa001
--- /dev/null
+++ b/groupsock/Groupsock.cpp
@@ -0,0 +1,675 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// 'Group sockets'
+// Implementation
+
+#include "Groupsock.hh"
+#include "GroupsockHelper.hh"
+//##### Eventually fix the following #include; we shouldn't know about tunnels
+#include "TunnelEncaps.hh"
+
+#ifndef NO_SSTREAM
+#include <sstream>
+#endif
+#include <stdio.h>
+
+///////// OutputSocket //////////
+
+OutputSocket::OutputSocket(UsageEnvironment& env)
+  : Socket(env, 0 /* let kernel choose port */),
+    fSourcePort(0), fLastSentTTL(256/*hack: a deliberately invalid value*/) {
+}
+
+OutputSocket::OutputSocket(UsageEnvironment& env, Port port)
+  : Socket(env, port),
+    fSourcePort(0), fLastSentTTL(256/*hack: a deliberately invalid value*/) {
+}
+
+OutputSocket::~OutputSocket() {
+}
+
+Boolean OutputSocket::write(netAddressBits address, portNumBits portNum, u_int8_t ttl,
+			    unsigned char* buffer, unsigned bufferSize) {
+  struct in_addr destAddr; destAddr.s_addr = address;
+  if ((unsigned)ttl == fLastSentTTL) {
+    // Optimization: Don't do a 'set TTL' system call again
+    if (!writeSocket(env(), socketNum(), destAddr, portNum, buffer, bufferSize)) return False;
+  } else {
+    if (!writeSocket(env(), socketNum(), destAddr, portNum, ttl, buffer, bufferSize)) return False;
+    fLastSentTTL = (unsigned)ttl;
+  }
+
+  if (sourcePortNum() == 0) {
+    // Now that we've sent a packet, we can find out what the
+    // kernel chose as our ephemeral source port number:
+    if (!getSourcePort(env(), socketNum(), fSourcePort)) {
+      if (DebugLevel >= 1)
+	env() << *this
+	     << ": failed to get source port: "
+	     << env().getResultMsg() << "\n";
+      return False;
+    }
+  }
+
+  return True;
+}
+
+// By default, we don't do reads:
+Boolean OutputSocket
+::handleRead(unsigned char* /*buffer*/, unsigned /*bufferMaxSize*/,
+	     unsigned& /*bytesRead*/, struct sockaddr_in& /*fromAddressAndPort*/) {
+  return True;
+}
+
+
+///////// destRecord //////////
+
+destRecord
+::destRecord(struct in_addr const& addr, Port const& port, u_int8_t ttl, unsigned sessionId,
+	     destRecord* next)
+  : fNext(next), fGroupEId(addr, port.num(), ttl), fSessionId(sessionId) {
+}
+
+destRecord::~destRecord() {
+  delete fNext;
+}
+
+
+///////// Groupsock //////////
+
+NetInterfaceTrafficStats Groupsock::statsIncoming;
+NetInterfaceTrafficStats Groupsock::statsOutgoing;
+NetInterfaceTrafficStats Groupsock::statsRelayedIncoming;
+NetInterfaceTrafficStats Groupsock::statsRelayedOutgoing;
+
+// Constructor for a source-independent multicast group
+Groupsock::Groupsock(UsageEnvironment& env, struct in_addr const& groupAddr,
+		     Port port, u_int8_t ttl)
+  : OutputSocket(env, port),
+    deleteIfNoMembers(False), isSlave(False),
+    fDests(new destRecord(groupAddr, port, ttl, 0, NULL)),
+    fIncomingGroupEId(groupAddr, port.num(), ttl) {
+
+  if (!socketJoinGroup(env, socketNum(), groupAddr.s_addr)) {
+    if (DebugLevel >= 1) {
+      env << *this << ": failed to join group: "
+	  << env.getResultMsg() << "\n";
+    }
+  }
+
+  // Make sure we can get our source address:
+  if (ourIPAddress(env) == 0) {
+    if (DebugLevel >= 0) { // this is a fatal error
+      env << "Unable to determine our source address: "
+	  << env.getResultMsg() << "\n";
+    }
+  }
+
+  if (DebugLevel >= 2) env << *this << ": created\n";
+}
+
+// Constructor for a source-specific multicast group
+Groupsock::Groupsock(UsageEnvironment& env, struct in_addr const& groupAddr,
+		     struct in_addr const& sourceFilterAddr,
+		     Port port)
+  : OutputSocket(env, port),
+    deleteIfNoMembers(False), isSlave(False),
+    fDests(new destRecord(groupAddr, port, 255, 0, NULL)),
+    fIncomingGroupEId(groupAddr, sourceFilterAddr, port.num()) {
+  // First try a SSM join.  If that fails, try a regular join:
+  if (!socketJoinGroupSSM(env, socketNum(), groupAddr.s_addr,
+			  sourceFilterAddr.s_addr)) {
+    if (DebugLevel >= 3) {
+      env << *this << ": SSM join failed: "
+	  << env.getResultMsg();
+      env << " - trying regular join instead\n";
+    }
+    if (!socketJoinGroup(env, socketNum(), groupAddr.s_addr)) {
+      if (DebugLevel >= 1) {
+	env << *this << ": failed to join group: "
+	     << env.getResultMsg() << "\n";
+      }
+    }
+  }
+
+  if (DebugLevel >= 2) env << *this << ": created\n";
+}
+
+Groupsock::~Groupsock() {
+  if (isSSM()) {
+    if (!socketLeaveGroupSSM(env(), socketNum(), groupAddress().s_addr,
+			     sourceFilterAddress().s_addr)) {
+      socketLeaveGroup(env(), socketNum(), groupAddress().s_addr);
+    }
+  } else {
+    socketLeaveGroup(env(), socketNum(), groupAddress().s_addr);
+  }
+
+  delete fDests;
+
+  if (DebugLevel >= 2) env() << *this << ": deleting\n";
+}
+
+destRecord* Groupsock
+::createNewDestRecord(struct in_addr const& addr, Port const& port, u_int8_t ttl,
+		      unsigned sessionId, destRecord* next) {
+  // Default implementation:
+  return new destRecord(addr, port, ttl, sessionId, next);
+}
+
+void
+Groupsock::changeDestinationParameters(struct in_addr const& newDestAddr,
+				       Port newDestPort, int newDestTTL, unsigned sessionId) {
+  destRecord* dest;
+  for (dest = fDests; dest != NULL && dest->fSessionId != sessionId; dest = dest->fNext) {}
+
+  if (dest == NULL) { // There's no existing 'destRecord' for this "sessionId"; add a new one:
+    fDests = createNewDestRecord(newDestAddr, newDestPort, newDestTTL, sessionId, fDests);
+    return;
+  }
+
+  // "dest" is an existing 'destRecord' for this "sessionId"; change its values to the new ones:
+  struct in_addr destAddr = dest->fGroupEId.groupAddress();
+  if (newDestAddr.s_addr != 0) {
+    if (newDestAddr.s_addr != destAddr.s_addr
+	&& IsMulticastAddress(newDestAddr.s_addr)) {
+      // If the new destination is a multicast address, then we assume that
+      // we want to join it also.  (If this is not in fact the case, then
+      // call "multicastSendOnly()" afterwards.)
+      socketLeaveGroup(env(), socketNum(), destAddr.s_addr);
+      socketJoinGroup(env(), socketNum(), newDestAddr.s_addr);
+    }
+    destAddr.s_addr = newDestAddr.s_addr;
+  }
+
+  portNumBits destPortNum = dest->fGroupEId.portNum();
+  if (newDestPort.num() != 0) {
+    if (newDestPort.num() != destPortNum
+	&& IsMulticastAddress(destAddr.s_addr)) {
+      // Also bind to the new port number:
+      changePort(newDestPort);
+      // And rejoin the multicast group:
+      socketJoinGroup(env(), socketNum(), destAddr.s_addr);
+    }
+    destPortNum = newDestPort.num();
+  }
+
+  u_int8_t destTTL = ttl();
+  if (newDestTTL != ~0) destTTL = (u_int8_t)newDestTTL;
+
+  dest->fGroupEId = GroupEId(destAddr, destPortNum, destTTL);
+
+  // Finally, remove any other 'destRecord's that might also have this "sessionId":
+  removeDestinationFrom(dest->fNext, sessionId);
+}
+
+unsigned Groupsock
+::lookupSessionIdFromDestination(struct sockaddr_in const& destAddrAndPort) const {
+  destRecord* dest = lookupDestRecordFromDestination(destAddrAndPort);
+  if (dest == NULL) return 0;
+
+  return dest->fSessionId;
+}
+
+void Groupsock::addDestination(struct in_addr const& addr, Port const& port, unsigned sessionId) {
+  // Default implementation:
+  // If there's no existing 'destRecord' with the same "addr", "port", and "sessionId", add a new one:
+  for (destRecord* dest = fDests; dest != NULL; dest = dest->fNext) {
+    if (sessionId == dest->fSessionId
+	&& addr.s_addr == dest->fGroupEId.groupAddress().s_addr
+	&& port.num() == dest->fGroupEId.portNum()) {
+      return;
+    }
+  }
+  
+  fDests = createNewDestRecord(addr, port, 255, sessionId, fDests);
+}
+
+void Groupsock::removeDestination(unsigned sessionId) {
+  // Default implementation:
+  removeDestinationFrom(fDests, sessionId);
+}
+
+void Groupsock::removeAllDestinations() {
+  delete fDests; fDests = NULL;
+}
+
+void Groupsock::multicastSendOnly() {
+  // We disable this code for now, because - on some systems - leaving the multicast group seems to cause sent packets
+  // to not be received by other applications (at least, on the same host).
+#if 0
+  socketLeaveGroup(env(), socketNum(), fIncomingGroupEId.groupAddress().s_addr);
+  for (destRecord* dests = fDests; dests != NULL; dests = dests->fNext) {
+    socketLeaveGroup(env(), socketNum(), dests->fGroupEId.groupAddress().s_addr);
+  }
+#endif
+}
+
+Boolean Groupsock::output(UsageEnvironment& env, unsigned char* buffer, unsigned bufferSize,
+			  DirectedNetInterface* interfaceNotToFwdBackTo) {
+  do {
+    // First, do the datagram send, to each destination:
+    Boolean writeSuccess = True;
+    for (destRecord* dests = fDests; dests != NULL; dests = dests->fNext) {
+      if (!write(dests->fGroupEId.groupAddress().s_addr, dests->fGroupEId.portNum(), dests->fGroupEId.ttl(),
+		 buffer, bufferSize)) {
+	writeSuccess = False;
+	break;
+      }
+    }
+    if (!writeSuccess) break;
+    statsOutgoing.countPacket(bufferSize);
+    statsGroupOutgoing.countPacket(bufferSize);
+
+    // Then, forward to our members:
+    int numMembers = 0;
+    if (!members().IsEmpty()) {
+      numMembers =
+	outputToAllMembersExcept(interfaceNotToFwdBackTo,
+				 ttl(), buffer, bufferSize,
+				 ourIPAddress(env));
+      if (numMembers < 0) break;
+    }
+
+    if (DebugLevel >= 3) {
+      env << *this << ": wrote " << bufferSize << " bytes, ttl " << (unsigned)ttl();
+      if (numMembers > 0) {
+	env << "; relayed to " << numMembers << " members";
+      }
+      env << "\n";
+    }
+    return True;
+  } while (0);
+
+  if (DebugLevel >= 0) { // this is a fatal error
+    UsageEnvironment::MsgString msg = strDup(env.getResultMsg());
+    env.setResultMsg("Groupsock write failed: ", msg);
+    delete[] (char*)msg;
+  }
+  return False;
+}
+
+Boolean Groupsock::handleRead(unsigned char* buffer, unsigned bufferMaxSize,
+			      unsigned& bytesRead,
+			      struct sockaddr_in& fromAddressAndPort) {
+  // Read data from the socket, and relay it across any attached tunnels
+  //##### later make this code more general - independent of tunnels
+
+  bytesRead = 0;
+
+  int maxBytesToRead = bufferMaxSize - TunnelEncapsulationTrailerMaxSize;
+  int numBytes = readSocket(env(), socketNum(),
+			    buffer, maxBytesToRead, fromAddressAndPort);
+  if (numBytes < 0) {
+    if (DebugLevel >= 0) { // this is a fatal error
+      UsageEnvironment::MsgString msg = strDup(env().getResultMsg());
+      env().setResultMsg("Groupsock read failed: ", msg);
+      delete[] (char*)msg;
+    }
+    return False;
+  }
+
+  // If we're a SSM group, make sure the source address matches:
+  if (isSSM()
+      && fromAddressAndPort.sin_addr.s_addr != sourceFilterAddress().s_addr) {
+    return True;
+  }
+
+  // We'll handle this data.
+  // Also write it (with the encapsulation trailer) to each member,
+  // unless the packet was originally sent by us to begin with.
+  bytesRead = numBytes;
+
+  int numMembers = 0;
+  if (!wasLoopedBackFromUs(env(), fromAddressAndPort)) {
+    statsIncoming.countPacket(numBytes);
+    statsGroupIncoming.countPacket(numBytes);
+    numMembers =
+      outputToAllMembersExcept(NULL, ttl(),
+			       buffer, bytesRead,
+			       fromAddressAndPort.sin_addr.s_addr);
+    if (numMembers > 0) {
+      statsRelayedIncoming.countPacket(numBytes);
+      statsGroupRelayedIncoming.countPacket(numBytes);
+    }
+  }
+  if (DebugLevel >= 3) {
+    env() << *this << ": read " << bytesRead << " bytes from " << AddressString(fromAddressAndPort).val() << ", port " << ntohs(fromAddressAndPort.sin_port);
+    if (numMembers > 0) {
+      env() << "; relayed to " << numMembers << " members";
+    }
+    env() << "\n";
+  }
+
+  return True;
+}
+
+Boolean Groupsock::wasLoopedBackFromUs(UsageEnvironment& env,
+				       struct sockaddr_in& fromAddressAndPort) {
+  if (fromAddressAndPort.sin_addr.s_addr == ourIPAddress(env) ||
+      fromAddressAndPort.sin_addr.s_addr == 0x7F000001/*127.0.0.1*/) {
+    if (fromAddressAndPort.sin_port == sourcePortNum()) {
+#ifdef DEBUG_LOOPBACK_CHECKING
+      if (DebugLevel >= 3) {
+	env() << *this << ": got looped-back packet\n";
+      }
+#endif
+      return True;
+    }
+  }
+
+  return False;
+}
+
+destRecord* Groupsock
+::lookupDestRecordFromDestination(struct sockaddr_in const& destAddrAndPort) const {
+  for (destRecord* dest = fDests; dest != NULL; dest = dest->fNext) {
+    if (destAddrAndPort.sin_addr.s_addr == dest->fGroupEId.groupAddress().s_addr
+	&& destAddrAndPort.sin_port == dest->fGroupEId.portNum()) {
+      return dest;
+    }
+  }
+  return NULL;
+}
+
+void Groupsock::removeDestinationFrom(destRecord*& dests, unsigned sessionId) {
+  destRecord** destsPtr = &dests;
+  while (*destsPtr != NULL) {
+    if (sessionId == (*destsPtr)->fSessionId) {
+      // Remove the record pointed to by *destsPtr :
+      destRecord* next = (*destsPtr)->fNext;
+      (*destsPtr)->fNext = NULL;
+      delete (*destsPtr);
+      *destsPtr = next;
+    } else {
+      destsPtr = &((*destsPtr)->fNext);
+    }
+  }
+}
+
+int Groupsock::outputToAllMembersExcept(DirectedNetInterface* exceptInterface,
+					u_int8_t ttlToFwd,
+					unsigned char* data, unsigned size,
+					netAddressBits sourceAddr) {
+  // Don't forward TTL-0 packets
+  if (ttlToFwd == 0) return 0;
+
+  DirectedNetInterfaceSet::Iterator iter(members());
+  unsigned numMembers = 0;
+  DirectedNetInterface* interf;
+  while ((interf = iter.next()) != NULL) {
+    // Check whether we've asked to exclude this interface:
+    if (interf == exceptInterface)
+      continue;
+
+    // Check that the packet's source address makes it OK to
+    // be relayed across this interface:
+    UsageEnvironment& saveEnv = env();
+    // because the following call may delete "this"
+    if (!interf->SourceAddrOKForRelaying(saveEnv, sourceAddr)) {
+      if (strcmp(saveEnv.getResultMsg(), "") != 0) {
+				// Treat this as a fatal error
+	return -1;
+      } else {
+	continue;
+      }
+    }
+
+    if (numMembers == 0) {
+      // We know that we're going to forward to at least one
+      // member, so fill in the tunnel encapsulation trailer.
+      // (Note: Allow for it not being 4-byte-aligned.)
+      TunnelEncapsulationTrailer* trailerInPacket
+	= (TunnelEncapsulationTrailer*)&data[size];
+      TunnelEncapsulationTrailer* trailer;
+
+      Boolean misaligned = ((uintptr_t)trailerInPacket & 3) != 0;
+      unsigned trailerOffset;
+      u_int8_t tunnelCmd;
+      if (isSSM()) {
+	// add an 'auxilliary address' before the trailer
+	trailerOffset = TunnelEncapsulationTrailerAuxSize;
+	tunnelCmd = TunnelDataAuxCmd;
+      } else {
+	trailerOffset = 0;
+	tunnelCmd = TunnelDataCmd;
+      }
+      unsigned trailerSize = TunnelEncapsulationTrailerSize + trailerOffset;
+      unsigned tmpTr[TunnelEncapsulationTrailerMaxSize];
+      if (misaligned) {
+	trailer = (TunnelEncapsulationTrailer*)&tmpTr;
+      } else {
+	trailer = trailerInPacket;
+      }
+      trailer += trailerOffset;
+
+      if (fDests != NULL) {
+	trailer->address() = fDests->fGroupEId.groupAddress().s_addr;
+	Port destPort(ntohs(fDests->fGroupEId.portNum()));
+	trailer->port() = destPort; // structure copy
+      }
+      trailer->ttl() = ttlToFwd;
+      trailer->command() = tunnelCmd;
+
+      if (isSSM()) {
+	trailer->auxAddress() = sourceFilterAddress().s_addr;
+      }
+
+      if (misaligned) {
+	memmove(trailerInPacket, trailer-trailerOffset, trailerSize);
+      }
+
+      size += trailerSize;
+    }
+
+    interf->write(data, size);
+    ++numMembers;
+  }
+
+  return numMembers;
+}
+
+UsageEnvironment& operator<<(UsageEnvironment& s, const Groupsock& g) {
+  UsageEnvironment& s1 = s << timestampString() << " Groupsock("
+			   << g.socketNum() << ": "
+			   << AddressString(g.groupAddress()).val()
+			   << ", " << g.port() << ", ";
+  if (g.isSSM()) {
+    return s1 << "SSM source: "
+	      <<  AddressString(g.sourceFilterAddress()).val() << ")";
+  } else {
+    return s1 << (unsigned)(g.ttl()) << ")";
+  }
+}
+
+
+////////// GroupsockLookupTable //////////
+
+
+// A hash table used to index Groupsocks by socket number.
+
+static HashTable*& getSocketTable(UsageEnvironment& env) {
+  _groupsockPriv* priv = groupsockPriv(env);
+  if (priv->socketTable == NULL) { // We need to create it
+    priv->socketTable = HashTable::create(ONE_WORD_HASH_KEYS);
+  }
+  return priv->socketTable;
+}
+
+static Boolean unsetGroupsockBySocket(Groupsock const* groupsock) {
+  do {
+    if (groupsock == NULL) break;
+
+    int sock = groupsock->socketNum();
+    // Make sure "sock" is in bounds:
+    if (sock < 0) break;
+
+    HashTable*& sockets = getSocketTable(groupsock->env());
+
+    Groupsock* gs = (Groupsock*)sockets->Lookup((char*)(long)sock);
+    if (gs == NULL || gs != groupsock) break;
+    sockets->Remove((char*)(long)sock);
+
+    if (sockets->IsEmpty()) {
+      // We can also delete the table (to reclaim space):
+      delete sockets; sockets = NULL;
+      reclaimGroupsockPriv(gs->env());
+    }
+
+    return True;
+  } while (0);
+
+  return False;
+}
+
+static Boolean setGroupsockBySocket(UsageEnvironment& env, int sock,
+				    Groupsock* groupsock) {
+  do {
+    // Make sure the "sock" parameter is in bounds:
+    if (sock < 0) {
+      char buf[100];
+      sprintf(buf, "trying to use bad socket (%d)", sock);
+      env.setResultMsg(buf);
+      break;
+    }
+
+    HashTable* sockets = getSocketTable(env);
+
+    // Make sure we're not replacing an existing Groupsock (although that shouldn't happen)
+    Boolean alreadyExists
+      = (sockets->Lookup((char*)(long)sock) != 0);
+    if (alreadyExists) {
+      char buf[100];
+      sprintf(buf, "Attempting to replace an existing socket (%d)", sock);
+      env.setResultMsg(buf);
+      break;
+    }
+
+    sockets->Add((char*)(long)sock, groupsock);
+    return True;
+  } while (0);
+
+  return False;
+}
+
+static Groupsock* getGroupsockBySocket(UsageEnvironment& env, int sock) {
+  do {
+    // Make sure the "sock" parameter is in bounds:
+    if (sock < 0) break;
+
+    HashTable* sockets = getSocketTable(env);
+    return (Groupsock*)sockets->Lookup((char*)(long)sock);
+  } while (0);
+
+  return NULL;
+}
+
+Groupsock*
+GroupsockLookupTable::Fetch(UsageEnvironment& env,
+			    netAddressBits groupAddress,
+			    Port port, u_int8_t ttl,
+			    Boolean& isNew) {
+  isNew = False;
+  Groupsock* groupsock;
+  do {
+    groupsock = (Groupsock*) fTable.Lookup(groupAddress, (~0), port);
+    if (groupsock == NULL) { // we need to create one:
+      groupsock = AddNew(env, groupAddress, (~0), port, ttl);
+      if (groupsock == NULL) break;
+      isNew = True;
+    }
+  } while (0);
+
+  return groupsock;
+}
+
+Groupsock*
+GroupsockLookupTable::Fetch(UsageEnvironment& env,
+			    netAddressBits groupAddress,
+			    netAddressBits sourceFilterAddr, Port port,
+			    Boolean& isNew) {
+  isNew = False;
+  Groupsock* groupsock;
+  do {
+    groupsock
+      = (Groupsock*) fTable.Lookup(groupAddress, sourceFilterAddr, port);
+    if (groupsock == NULL) { // we need to create one:
+      groupsock = AddNew(env, groupAddress, sourceFilterAddr, port, 0);
+      if (groupsock == NULL) break;
+      isNew = True;
+    }
+  } while (0);
+
+  return groupsock;
+}
+
+Groupsock*
+GroupsockLookupTable::Lookup(netAddressBits groupAddress, Port port) {
+  return (Groupsock*) fTable.Lookup(groupAddress, (~0), port);
+}
+
+Groupsock*
+GroupsockLookupTable::Lookup(netAddressBits groupAddress,
+			     netAddressBits sourceFilterAddr, Port port) {
+  return (Groupsock*) fTable.Lookup(groupAddress, sourceFilterAddr, port);
+}
+
+Groupsock* GroupsockLookupTable::Lookup(UsageEnvironment& env, int sock) {
+  return getGroupsockBySocket(env, sock);
+}
+
+Boolean GroupsockLookupTable::Remove(Groupsock const* groupsock) {
+  unsetGroupsockBySocket(groupsock);
+  return fTable.Remove(groupsock->groupAddress().s_addr,
+		       groupsock->sourceFilterAddress().s_addr,
+		       groupsock->port());
+}
+
+Groupsock* GroupsockLookupTable::AddNew(UsageEnvironment& env,
+					netAddressBits groupAddress,
+					netAddressBits sourceFilterAddress,
+					Port port, u_int8_t ttl) {
+  Groupsock* groupsock;
+  do {
+    struct in_addr groupAddr; groupAddr.s_addr = groupAddress;
+    if (sourceFilterAddress == netAddressBits(~0)) {
+      // regular, ISM groupsock
+      groupsock = new Groupsock(env, groupAddr, port, ttl);
+    } else {
+      // SSM groupsock
+      struct in_addr sourceFilterAddr;
+      sourceFilterAddr.s_addr = sourceFilterAddress;
+      groupsock = new Groupsock(env, groupAddr, sourceFilterAddr, port);
+    }
+
+    if (groupsock == NULL || groupsock->socketNum() < 0) break;
+
+    if (!setGroupsockBySocket(env, groupsock->socketNum(), groupsock)) break;
+
+    fTable.Add(groupAddress, sourceFilterAddress, port, (void*)groupsock);
+  } while (0);
+
+  return groupsock;
+}
+
+GroupsockLookupTable::Iterator::Iterator(GroupsockLookupTable& groupsocks)
+  : fIter(AddressPortLookupTable::Iterator(groupsocks.fTable)) {
+}
+
+Groupsock* GroupsockLookupTable::Iterator::next() {
+  return (Groupsock*) fIter.next();
+};
diff --git a/groupsock/GroupsockHelper.cpp b/groupsock/GroupsockHelper.cpp
new file mode 100644
index 0000000..1ddf91f
--- /dev/null
+++ b/groupsock/GroupsockHelper.cpp
@@ -0,0 +1,898 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Helper routines to implement 'group sockets'
+// Implementation
+
+#include "GroupsockHelper.hh"
+
+#if (defined(__WIN32__) || defined(_WIN32)) && !defined(__MINGW32__)
+#include <time.h>
+extern "C" int initializeWinsockIfNecessary();
+#else
+#include <stdarg.h>
+#include <time.h>
+#include <sys/time.h>
+#if !defined(_WIN32)
+#include <netinet/tcp.h>
+#ifdef __ANDROID_NDK__
+#include <android/ndk-version.h>
+#define ANDROID_OLD_NDK __NDK_MAJOR__ < 17
+#endif
+#endif
+#include <fcntl.h>
+#define initializeWinsockIfNecessary() 1
+#endif
+#if defined(__WIN32__) || defined(_WIN32) || defined(_QNX4)
+#else
+#include <signal.h>
+#define USE_SIGNALS 1
+#endif
+#include <stdio.h>
+
+// By default, use INADDR_ANY for the sending and receiving interfaces:
+netAddressBits SendingInterfaceAddr = INADDR_ANY;
+netAddressBits ReceivingInterfaceAddr = INADDR_ANY;
+
+static void socketErr(UsageEnvironment& env, char const* errorMsg) {
+  env.setResultErrMsg(errorMsg);
+}
+
+NoReuse::NoReuse(UsageEnvironment& env)
+  : fEnv(env) {
+  groupsockPriv(fEnv)->reuseFlag = 0;
+}
+
+NoReuse::~NoReuse() {
+  groupsockPriv(fEnv)->reuseFlag = 1;
+  reclaimGroupsockPriv(fEnv);
+}
+
+
+_groupsockPriv* groupsockPriv(UsageEnvironment& env) {
+  if (env.groupsockPriv == NULL) { // We need to create it
+    _groupsockPriv* result = new _groupsockPriv;
+    result->socketTable = NULL;
+    result->reuseFlag = 1; // default value => allow reuse of socket numbers
+    env.groupsockPriv = result;
+  }
+  return (_groupsockPriv*)(env.groupsockPriv);
+}
+
+void reclaimGroupsockPriv(UsageEnvironment& env) {
+  _groupsockPriv* priv = (_groupsockPriv*)(env.groupsockPriv);
+  if (priv->socketTable == NULL && priv->reuseFlag == 1/*default value*/) {
+    // We can delete the structure (to save space); it will get created again, if needed:
+    delete priv;
+    env.groupsockPriv = NULL;
+  }
+}
+
+static int createSocket(int type) {
+  // Call "socket()" to create a (IPv4) socket of the specified type.
+  // But also set it to have the 'close on exec' property (if we can)
+  int sock;
+
+#ifdef SOCK_CLOEXEC
+  sock = socket(AF_INET, type|SOCK_CLOEXEC, 0);
+  if (sock != -1 || errno != EINVAL) return sock;
+  // An "errno" of EINVAL likely means that the system wasn't happy with the SOCK_CLOEXEC; fall through and try again without it:
+#endif
+
+  sock = socket(AF_INET, type, 0);
+#ifdef FD_CLOEXEC
+  if (sock != -1) fcntl(sock, F_SETFD, FD_CLOEXEC);
+#endif
+  return sock;
+}
+
+int setupDatagramSocket(UsageEnvironment& env, Port port) {
+  if (!initializeWinsockIfNecessary()) {
+    socketErr(env, "Failed to initialize 'winsock': ");
+    return -1;
+  }
+
+  int newSocket = createSocket(SOCK_DGRAM);
+  if (newSocket < 0) {
+    socketErr(env, "unable to create datagram socket: ");
+    return newSocket;
+  }
+
+  int reuseFlag = groupsockPriv(env)->reuseFlag;
+  reclaimGroupsockPriv(env);
+  if (setsockopt(newSocket, SOL_SOCKET, SO_REUSEADDR,
+		 (const char*)&reuseFlag, sizeof reuseFlag) < 0) {
+    socketErr(env, "setsockopt(SO_REUSEADDR) error: ");
+    closeSocket(newSocket);
+    return -1;
+  }
+
+#if defined(__WIN32__) || defined(_WIN32)
+  // Windoze doesn't properly handle SO_REUSEPORT or IP_MULTICAST_LOOP
+#else
+#ifdef SO_REUSEPORT
+  if (setsockopt(newSocket, SOL_SOCKET, SO_REUSEPORT,
+		 (const char*)&reuseFlag, sizeof reuseFlag) < 0) {
+    socketErr(env, "setsockopt(SO_REUSEPORT) error: ");
+    closeSocket(newSocket);
+    return -1;
+  }
+#endif
+
+#ifdef IP_MULTICAST_LOOP
+  const u_int8_t loop = 1;
+  if (setsockopt(newSocket, IPPROTO_IP, IP_MULTICAST_LOOP,
+		 (const char*)&loop, sizeof loop) < 0) {
+    socketErr(env, "setsockopt(IP_MULTICAST_LOOP) error: ");
+    closeSocket(newSocket);
+    return -1;
+  }
+#endif
+#endif
+
+  // Note: Windoze requires binding, even if the port number is 0
+  netAddressBits addr = INADDR_ANY;
+#if defined(__WIN32__) || defined(_WIN32)
+#else
+  if (port.num() != 0 || ReceivingInterfaceAddr != INADDR_ANY) {
+#endif
+    if (port.num() == 0) addr = ReceivingInterfaceAddr;
+    MAKE_SOCKADDR_IN(name, addr, port.num());
+    if (bind(newSocket, (struct sockaddr*)&name, sizeof name) != 0) {
+      char tmpBuffer[100];
+      sprintf(tmpBuffer, "bind() error (port number: %d): ",
+	      ntohs(port.num()));
+      socketErr(env, tmpBuffer);
+      closeSocket(newSocket);
+      return -1;
+    }
+#if defined(__WIN32__) || defined(_WIN32)
+#else
+  }
+#endif
+
+  // Set the sending interface for multicasts, if it's not the default:
+  if (SendingInterfaceAddr != INADDR_ANY) {
+    struct in_addr addr;
+    addr.s_addr = SendingInterfaceAddr;
+
+    if (setsockopt(newSocket, IPPROTO_IP, IP_MULTICAST_IF,
+		   (const char*)&addr, sizeof addr) < 0) {
+      socketErr(env, "error setting outgoing multicast interface: ");
+      closeSocket(newSocket);
+      return -1;
+    }
+  }
+
+  return newSocket;
+}
+
+Boolean makeSocketNonBlocking(int sock) {
+#if defined(__WIN32__) || defined(_WIN32)
+  unsigned long arg = 1;
+  return ioctlsocket(sock, FIONBIO, &arg) == 0;
+#elif defined(VXWORKS)
+  int arg = 1;
+  return ioctl(sock, FIONBIO, (int)&arg) == 0;
+#else
+  int curFlags = fcntl(sock, F_GETFL, 0);
+  return fcntl(sock, F_SETFL, curFlags|O_NONBLOCK) >= 0;
+#endif
+}
+
+Boolean makeSocketBlocking(int sock, unsigned writeTimeoutInMilliseconds) {
+  Boolean result;
+#if defined(__WIN32__) || defined(_WIN32)
+  unsigned long arg = 0;
+  result = ioctlsocket(sock, FIONBIO, &arg) == 0;
+#elif defined(VXWORKS)
+  int arg = 0;
+  result = ioctl(sock, FIONBIO, (int)&arg) == 0;
+#else
+  int curFlags = fcntl(sock, F_GETFL, 0);
+  result = fcntl(sock, F_SETFL, curFlags&(~O_NONBLOCK)) >= 0;
+#endif
+
+  if (writeTimeoutInMilliseconds > 0) {
+#ifdef SO_SNDTIMEO
+#if defined(__WIN32__) || defined(_WIN32)
+    DWORD msto = (DWORD)writeTimeoutInMilliseconds;
+    setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, (char *)&msto, sizeof(msto) );
+#else
+    struct timeval tv;
+    tv.tv_sec = writeTimeoutInMilliseconds/1000;
+    tv.tv_usec = (writeTimeoutInMilliseconds%1000)*1000;
+    setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, (char *)&tv, sizeof tv);
+#endif
+#endif
+  }
+
+  return result;
+}
+
+Boolean setSocketKeepAlive(int sock) {
+#if defined(__WIN32__) || defined(_WIN32)
+  // How do we do this in Windows?  For now, just make this a no-op in Windows:
+#else
+  int const keepalive_enabled = 1;
+  if (setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (void*)&keepalive_enabled, sizeof keepalive_enabled) < 0) {
+    return False;
+  }
+
+#ifdef TCP_KEEPIDLE
+  int const keepalive_time = 180;
+  if (setsockopt(sock, IPPROTO_TCP, TCP_KEEPIDLE, (void*)&keepalive_time, sizeof keepalive_time) < 0) {
+    return False;
+  }
+#endif
+
+#ifdef TCP_KEEPCNT
+  int const keepalive_count = 5;
+  if (setsockopt(sock, IPPROTO_TCP, TCP_KEEPCNT, (void*)&keepalive_count, sizeof keepalive_count) < 0) {
+    return False;
+  }
+#endif
+
+#ifdef TCP_KEEPINTVL
+  int const keepalive_interval = 20;
+  if (setsockopt(sock, IPPROTO_TCP, TCP_KEEPINTVL, (void*)&keepalive_interval, sizeof keepalive_interval) < 0) {
+    return False;
+  }
+#endif
+#endif
+
+  return True;
+}
+
+int setupStreamSocket(UsageEnvironment& env,
+                      Port port, Boolean makeNonBlocking, Boolean setKeepAlive) {
+  if (!initializeWinsockIfNecessary()) {
+    socketErr(env, "Failed to initialize 'winsock': ");
+    return -1;
+  }
+
+  int newSocket = createSocket(SOCK_STREAM);
+  if (newSocket < 0) {
+    socketErr(env, "unable to create stream socket: ");
+    return newSocket;
+  }
+
+  int reuseFlag = groupsockPriv(env)->reuseFlag;
+  reclaimGroupsockPriv(env);
+  if (setsockopt(newSocket, SOL_SOCKET, SO_REUSEADDR,
+		 (const char*)&reuseFlag, sizeof reuseFlag) < 0) {
+    socketErr(env, "setsockopt(SO_REUSEADDR) error: ");
+    closeSocket(newSocket);
+    return -1;
+  }
+
+  // SO_REUSEPORT doesn't really make sense for TCP sockets, so we
+  // normally don't set them.  However, if you really want to do this
+  // #define REUSE_FOR_TCP
+#ifdef REUSE_FOR_TCP
+#if defined(__WIN32__) || defined(_WIN32)
+  // Windoze doesn't properly handle SO_REUSEPORT
+#else
+#ifdef SO_REUSEPORT
+  if (setsockopt(newSocket, SOL_SOCKET, SO_REUSEPORT,
+		 (const char*)&reuseFlag, sizeof reuseFlag) < 0) {
+    socketErr(env, "setsockopt(SO_REUSEPORT) error: ");
+    closeSocket(newSocket);
+    return -1;
+  }
+#endif
+#endif
+#endif
+
+  // Note: Windoze requires binding, even if the port number is 0
+#if defined(__WIN32__) || defined(_WIN32)
+#else
+  if (port.num() != 0 || ReceivingInterfaceAddr != INADDR_ANY) {
+#endif
+    MAKE_SOCKADDR_IN(name, ReceivingInterfaceAddr, port.num());
+    if (bind(newSocket, (struct sockaddr*)&name, sizeof name) != 0) {
+      char tmpBuffer[100];
+      sprintf(tmpBuffer, "bind() error (port number: %d): ",
+	      ntohs(port.num()));
+      socketErr(env, tmpBuffer);
+      closeSocket(newSocket);
+      return -1;
+    }
+#if defined(__WIN32__) || defined(_WIN32)
+#else
+  }
+#endif
+
+  if (makeNonBlocking) {
+    if (!makeSocketNonBlocking(newSocket)) {
+      socketErr(env, "failed to make non-blocking: ");
+      closeSocket(newSocket);
+      return -1;
+    }
+  }
+
+  // Set the keep alive mechanism for the TCP socket, to avoid "ghost sockets" 
+  //    that remain after an interrupted communication.
+  if (setKeepAlive) {
+    if (!setSocketKeepAlive(newSocket)) {
+      socketErr(env, "failed to set keep alive: ");
+      closeSocket(newSocket);
+      return -1;
+    }
+  }
+
+  return newSocket;
+}
+
+int readSocket(UsageEnvironment& env,
+	       int socket, unsigned char* buffer, unsigned bufferSize,
+	       struct sockaddr_in& fromAddress) {
+  SOCKLEN_T addressSize = sizeof fromAddress;
+  int bytesRead = recvfrom(socket, (char*)buffer, bufferSize, 0,
+			   (struct sockaddr*)&fromAddress,
+			   &addressSize);
+  if (bytesRead < 0) {
+    //##### HACK to work around bugs in Linux and Windows:
+    int err = env.getErrno();
+    if (err == 111 /*ECONNREFUSED (Linux)*/
+#if defined(__WIN32__) || defined(_WIN32)
+	// What a piece of crap Windows is.  Sometimes
+	// recvfrom() returns -1, but with an 'errno' of 0.
+	// This appears not to be a real error; just treat
+	// it as if it were a read of zero bytes, and hope
+	// we don't have to do anything else to 'reset'
+	// this alleged error:
+	|| err == 0 || err == EWOULDBLOCK
+#else
+	|| err == EAGAIN
+#endif
+	|| err == 113 /*EHOSTUNREACH (Linux)*/) { // Why does Linux return this for datagram sock?
+      fromAddress.sin_addr.s_addr = 0;
+      return 0;
+    }
+    //##### END HACK
+    socketErr(env, "recvfrom() error: ");
+  } else if (bytesRead == 0) {
+    // "recvfrom()" on a stream socket can return 0 if the remote end has closed the connection.  Treat this as an error:
+    return -1;
+  }
+
+  return bytesRead;
+}
+
+Boolean writeSocket(UsageEnvironment& env,
+		    int socket, struct in_addr address, portNumBits portNum,
+		    u_int8_t ttlArg,
+		    unsigned char* buffer, unsigned bufferSize) {
+  // Before sending, set the socket's TTL:
+#if defined(__WIN32__) || defined(_WIN32)
+#define TTL_TYPE int
+#else
+#define TTL_TYPE u_int8_t
+#endif
+  TTL_TYPE ttl = (TTL_TYPE)ttlArg;
+  if (setsockopt(socket, IPPROTO_IP, IP_MULTICAST_TTL,
+		 (const char*)&ttl, sizeof ttl) < 0) {
+    socketErr(env, "setsockopt(IP_MULTICAST_TTL) error: ");
+    return False;
+  }
+
+  return writeSocket(env, socket, address, portNum, buffer, bufferSize);
+}
+
+Boolean writeSocket(UsageEnvironment& env,
+		    int socket, struct in_addr address, portNumBits portNum,
+		    unsigned char* buffer, unsigned bufferSize) {
+  do {
+    MAKE_SOCKADDR_IN(dest, address.s_addr, portNum);
+    int bytesSent = sendto(socket, (char*)buffer, bufferSize, 0,
+			   (struct sockaddr*)&dest, sizeof dest);
+    if (bytesSent != (int)bufferSize) {
+      char tmpBuf[100];
+      sprintf(tmpBuf, "writeSocket(%d), sendTo() error: wrote %d bytes instead of %u: ", socket, bytesSent, bufferSize);
+      socketErr(env, tmpBuf);
+      break;
+    }
+    
+    return True;
+  } while (0);
+
+  return False;
+}
+
+void ignoreSigPipeOnSocket(int socketNum) {
+  #ifdef USE_SIGNALS
+  #ifdef SO_NOSIGPIPE
+  int set_option = 1;
+  setsockopt(socketNum, SOL_SOCKET, SO_NOSIGPIPE, &set_option, sizeof set_option);
+  #else
+  signal(SIGPIPE, SIG_IGN);
+  #endif
+  #endif
+}
+
+static unsigned getBufferSize(UsageEnvironment& env, int bufOptName,
+			      int socket) {
+  unsigned curSize;
+  SOCKLEN_T sizeSize = sizeof curSize;
+  if (getsockopt(socket, SOL_SOCKET, bufOptName,
+		 (char*)&curSize, &sizeSize) < 0) {
+    socketErr(env, "getBufferSize() error: ");
+    return 0;
+  }
+
+  return curSize;
+}
+unsigned getSendBufferSize(UsageEnvironment& env, int socket) {
+  return getBufferSize(env, SO_SNDBUF, socket);
+}
+unsigned getReceiveBufferSize(UsageEnvironment& env, int socket) {
+  return getBufferSize(env, SO_RCVBUF, socket);
+}
+
+static unsigned setBufferTo(UsageEnvironment& env, int bufOptName,
+			    int socket, unsigned requestedSize) {
+  SOCKLEN_T sizeSize = sizeof requestedSize;
+  setsockopt(socket, SOL_SOCKET, bufOptName, (char*)&requestedSize, sizeSize);
+
+  // Get and return the actual, resulting buffer size:
+  return getBufferSize(env, bufOptName, socket);
+}
+unsigned setSendBufferTo(UsageEnvironment& env,
+			 int socket, unsigned requestedSize) {
+	return setBufferTo(env, SO_SNDBUF, socket, requestedSize);
+}
+unsigned setReceiveBufferTo(UsageEnvironment& env,
+			    int socket, unsigned requestedSize) {
+	return setBufferTo(env, SO_RCVBUF, socket, requestedSize);
+}
+
+static unsigned increaseBufferTo(UsageEnvironment& env, int bufOptName,
+				 int socket, unsigned requestedSize) {
+  // First, get the current buffer size.  If it's already at least
+  // as big as what we're requesting, do nothing.
+  unsigned curSize = getBufferSize(env, bufOptName, socket);
+
+  // Next, try to increase the buffer to the requested size,
+  // or to some smaller size, if that's not possible:
+  while (requestedSize > curSize) {
+    SOCKLEN_T sizeSize = sizeof requestedSize;
+    if (setsockopt(socket, SOL_SOCKET, bufOptName,
+		   (char*)&requestedSize, sizeSize) >= 0) {
+      // success
+      return requestedSize;
+    }
+    requestedSize = (requestedSize+curSize)/2;
+  }
+
+  return getBufferSize(env, bufOptName, socket);
+}
+unsigned increaseSendBufferTo(UsageEnvironment& env,
+			      int socket, unsigned requestedSize) {
+  return increaseBufferTo(env, SO_SNDBUF, socket, requestedSize);
+}
+unsigned increaseReceiveBufferTo(UsageEnvironment& env,
+				 int socket, unsigned requestedSize) {
+  return increaseBufferTo(env, SO_RCVBUF, socket, requestedSize);
+}
+
+static void clearMulticastAllSocketOption(int socket) {
+#ifdef IP_MULTICAST_ALL
+  // This option is defined in modern versions of Linux to overcome a bug in the Linux kernel's default behavior.
+  // When set to 0, it ensures that we receive only packets that were sent to the specified IP multicast address,
+  // even if some other process on the same system has joined a different multicast group with the same port number.
+  int multicastAll = 0;
+  (void)setsockopt(socket, IPPROTO_IP, IP_MULTICAST_ALL, (void*)&multicastAll, sizeof multicastAll);
+  // Ignore the call's result.  Should it fail, we'll still receive packets (just perhaps more than intended)
+#endif
+}
+
+Boolean socketJoinGroup(UsageEnvironment& env, int socket,
+			netAddressBits groupAddress){
+  if (!IsMulticastAddress(groupAddress)) return True; // ignore this case
+
+  struct ip_mreq imr;
+  imr.imr_multiaddr.s_addr = groupAddress;
+  imr.imr_interface.s_addr = ReceivingInterfaceAddr;
+  if (setsockopt(socket, IPPROTO_IP, IP_ADD_MEMBERSHIP,
+		 (const char*)&imr, sizeof (struct ip_mreq)) < 0) {
+#if defined(__WIN32__) || defined(_WIN32)
+    if (env.getErrno() != 0) {
+      // That piece-of-shit toy operating system (Windows) sometimes lies
+      // about setsockopt() failing!
+#endif
+      socketErr(env, "setsockopt(IP_ADD_MEMBERSHIP) error: ");
+      return False;
+#if defined(__WIN32__) || defined(_WIN32)
+    }
+#endif
+  }
+
+  clearMulticastAllSocketOption(socket);
+
+  return True;
+}
+
+Boolean socketLeaveGroup(UsageEnvironment&, int socket,
+			 netAddressBits groupAddress) {
+  if (!IsMulticastAddress(groupAddress)) return True; // ignore this case
+
+  struct ip_mreq imr;
+  imr.imr_multiaddr.s_addr = groupAddress;
+  imr.imr_interface.s_addr = ReceivingInterfaceAddr;
+  if (setsockopt(socket, IPPROTO_IP, IP_DROP_MEMBERSHIP,
+		 (const char*)&imr, sizeof (struct ip_mreq)) < 0) {
+    return False;
+  }
+
+  return True;
+}
+
+// The source-specific join/leave operations require special setsockopt()
+// commands, and a special structure (ip_mreq_source).  If the include files
+// didn't define these, we do so here:
+#if !defined(IP_ADD_SOURCE_MEMBERSHIP)
+struct ip_mreq_source {
+  struct  in_addr imr_multiaddr;  /* IP multicast address of group */
+  struct  in_addr imr_sourceaddr; /* IP address of source */
+  struct  in_addr imr_interface;  /* local IP address of interface */
+};
+#endif
+
+#ifndef IP_ADD_SOURCE_MEMBERSHIP
+
+#ifdef LINUX
+#define IP_ADD_SOURCE_MEMBERSHIP   39
+#define IP_DROP_SOURCE_MEMBERSHIP 40
+#else
+#define IP_ADD_SOURCE_MEMBERSHIP   25
+#define IP_DROP_SOURCE_MEMBERSHIP 26
+#endif
+
+#endif
+
+Boolean socketJoinGroupSSM(UsageEnvironment& env, int socket,
+			   netAddressBits groupAddress,
+			   netAddressBits sourceFilterAddr) {
+  if (!IsMulticastAddress(groupAddress)) return True; // ignore this case
+
+  struct ip_mreq_source imr;
+#if ANDROID_OLD_NDK
+    imr.imr_multiaddr = groupAddress;
+    imr.imr_sourceaddr = sourceFilterAddr;
+    imr.imr_interface = ReceivingInterfaceAddr;
+#else
+    imr.imr_multiaddr.s_addr = groupAddress;
+    imr.imr_sourceaddr.s_addr = sourceFilterAddr;
+    imr.imr_interface.s_addr = ReceivingInterfaceAddr;
+#endif
+  if (setsockopt(socket, IPPROTO_IP, IP_ADD_SOURCE_MEMBERSHIP,
+		 (const char*)&imr, sizeof (struct ip_mreq_source)) < 0) {
+    socketErr(env, "setsockopt(IP_ADD_SOURCE_MEMBERSHIP) error: ");
+    return False;
+  }
+
+  clearMulticastAllSocketOption(socket);
+
+  return True;
+}
+
+Boolean socketLeaveGroupSSM(UsageEnvironment& /*env*/, int socket,
+			    netAddressBits groupAddress,
+			    netAddressBits sourceFilterAddr) {
+  if (!IsMulticastAddress(groupAddress)) return True; // ignore this case
+
+  struct ip_mreq_source imr;
+#if ANDROID_OLD_NDK
+    imr.imr_multiaddr = groupAddress;
+    imr.imr_sourceaddr = sourceFilterAddr;
+    imr.imr_interface = ReceivingInterfaceAddr;
+#else
+    imr.imr_multiaddr.s_addr = groupAddress;
+    imr.imr_sourceaddr.s_addr = sourceFilterAddr;
+    imr.imr_interface.s_addr = ReceivingInterfaceAddr;
+#endif
+  if (setsockopt(socket, IPPROTO_IP, IP_DROP_SOURCE_MEMBERSHIP,
+		 (const char*)&imr, sizeof (struct ip_mreq_source)) < 0) {
+    return False;
+  }
+
+  return True;
+}
+
+static Boolean getSourcePort0(int socket, portNumBits& resultPortNum/*host order*/) {
+  sockaddr_in test; test.sin_port = 0;
+  SOCKLEN_T len = sizeof test;
+  if (getsockname(socket, (struct sockaddr*)&test, &len) < 0) return False;
+
+  resultPortNum = ntohs(test.sin_port);
+  return True;
+}
+
+Boolean getSourcePort(UsageEnvironment& env, int socket, Port& port) {
+  portNumBits portNum = 0;
+  if (!getSourcePort0(socket, portNum) || portNum == 0) {
+    // Hack - call bind(), then try again:
+    MAKE_SOCKADDR_IN(name, INADDR_ANY, 0);
+    bind(socket, (struct sockaddr*)&name, sizeof name);
+
+    if (!getSourcePort0(socket, portNum) || portNum == 0) {
+      socketErr(env, "getsockname() error: ");
+      return False;
+    }
+  }
+
+  port = Port(portNum);
+  return True;
+}
+
+static Boolean badAddressForUs(netAddressBits addr) {
+  // Check for some possible erroneous addresses:
+  netAddressBits nAddr = htonl(addr);
+  return (nAddr == 0x7F000001 /* 127.0.0.1 */
+	  || nAddr == 0
+	  || nAddr == (netAddressBits)(~0));
+}
+
+Boolean loopbackWorks = 1;
+
+netAddressBits ourIPAddress(UsageEnvironment& env) {
+  static netAddressBits ourAddress = 0;
+  int sock = -1;
+  struct in_addr testAddr;
+
+  if (ReceivingInterfaceAddr != INADDR_ANY) {
+    // Hack: If we were told to receive on a specific interface address, then 
+    // define this to be our ip address:
+    ourAddress = ReceivingInterfaceAddr;
+  }
+
+  if (ourAddress == 0) {
+    // We need to find our source address
+    struct sockaddr_in fromAddr;
+    fromAddr.sin_addr.s_addr = 0;
+
+    // Get our address by sending a (0-TTL) multicast packet,
+    // receiving it, and looking at the source address used.
+    // (This is kinda bogus, but it provides the best guarantee
+    // that other nodes will think our address is the same as we do.)
+    do {
+      loopbackWorks = 0; // until we learn otherwise
+
+#ifndef DISABLE_LOOPBACK_IP_ADDRESS_CHECK
+      testAddr.s_addr = our_inet_addr("228.67.43.91"); // arbitrary
+      Port testPort(15947); // ditto
+
+      sock = setupDatagramSocket(env, testPort);
+      if (sock < 0) break;
+
+      if (!socketJoinGroup(env, sock, testAddr.s_addr)) break;
+
+      unsigned char testString[] = "hostIdTest";
+      unsigned testStringLength = sizeof testString;
+
+      if (!writeSocket(env, sock, testAddr, testPort.num(), 0,
+		       testString, testStringLength)) break;
+
+      // Block until the socket is readable (with a 5-second timeout):
+      fd_set rd_set;
+      FD_ZERO(&rd_set);
+      FD_SET((unsigned)sock, &rd_set);
+      const unsigned numFds = sock+1;
+      struct timeval timeout;
+      timeout.tv_sec = 5;
+      timeout.tv_usec = 0;
+      int result = select(numFds, &rd_set, NULL, NULL, &timeout);
+      if (result <= 0) break;
+
+      unsigned char readBuffer[20];
+      int bytesRead = readSocket(env, sock,
+				 readBuffer, sizeof readBuffer,
+				 fromAddr);
+      if (bytesRead != (int)testStringLength
+	  || strncmp((char*)readBuffer, (char*)testString, testStringLength) != 0) {
+	break;
+      }
+
+      // We use this packet's source address, if it's good:
+      loopbackWorks = !badAddressForUs(fromAddr.sin_addr.s_addr);
+#endif
+    } while (0);
+
+    if (sock >= 0) {
+      socketLeaveGroup(env, sock, testAddr.s_addr);
+      closeSocket(sock);
+    }
+
+    if (!loopbackWorks) do {
+      // We couldn't find our address using multicast loopback,
+      // so try instead to look it up directly - by first getting our host name, and then resolving this host name
+      char hostname[100];
+      hostname[0] = '\0';
+      int result = gethostname(hostname, sizeof hostname);
+      if (result != 0 || hostname[0] == '\0') {
+	env.setResultErrMsg("initial gethostname() failed");
+	break;
+      }
+
+      // Try to resolve "hostname" to an IP address:
+      NetAddressList addresses(hostname);
+      NetAddressList::Iterator iter(addresses);
+      NetAddress const* address;
+
+      // Take the first address that's not bad:
+      netAddressBits addr = 0;
+      while ((address = iter.nextAddress()) != NULL) {
+	netAddressBits a = *(netAddressBits*)(address->data());
+	if (!badAddressForUs(a)) {
+	  addr = a;
+	  break;
+	}
+      }
+
+      // Assign the address that we found to "fromAddr" (as if the 'loopback' method had worked), to simplify the code below: 
+      fromAddr.sin_addr.s_addr = addr;
+    } while (0);
+
+    // Make sure we have a good address:
+    netAddressBits from = fromAddr.sin_addr.s_addr;
+    if (badAddressForUs(from)) {
+      char tmp[100];
+      sprintf(tmp, "This computer has an invalid IP address: %s", AddressString(from).val());
+      env.setResultMsg(tmp);
+      from = 0;
+    }
+
+    ourAddress = from;
+
+    // Use our newly-discovered IP address, and the current time,
+    // to initialize the random number generator's seed:
+    struct timeval timeNow;
+    gettimeofday(&timeNow, NULL);
+    unsigned seed = ourAddress^timeNow.tv_sec^timeNow.tv_usec;
+    our_srandom(seed);
+  }
+  return ourAddress;
+}
+
+netAddressBits chooseRandomIPv4SSMAddress(UsageEnvironment& env) {
+  // First, a hack to ensure that our random number generator is seeded:
+  (void) ourIPAddress(env);
+
+  // Choose a random address in the range [232.0.1.0, 232.255.255.255)
+  // i.e., [0xE8000100, 0xE8FFFFFF)
+  netAddressBits const first = 0xE8000100, lastPlus1 = 0xE8FFFFFF;
+  netAddressBits const range = lastPlus1 - first;
+
+  return ntohl(first + ((netAddressBits)our_random())%range);
+}
+
+char const* timestampString() {
+  struct timeval tvNow;
+  gettimeofday(&tvNow, NULL);
+
+#if !defined(_WIN32_WCE)
+  static char timeString[9]; // holds hh:mm:ss plus trailing '\0'
+
+  time_t tvNow_t = tvNow.tv_sec;
+  char const* ctimeResult = ctime(&tvNow_t);
+  if (ctimeResult == NULL) {
+    sprintf(timeString, "??:??:??");
+  } else {
+    char const* from = &ctimeResult[11];
+    int i;
+    for (i = 0; i < 8; ++i) {
+      timeString[i] = from[i];
+    }
+    timeString[i] = '\0';
+  }
+#else
+  // WinCE apparently doesn't have "ctime()", so instead, construct
+  // a timestamp string just using the integer and fractional parts
+  // of "tvNow":
+  static char timeString[50];
+  sprintf(timeString, "%lu.%06ld", tvNow.tv_sec, tvNow.tv_usec);
+#endif
+
+  return (char const*)&timeString;
+}
+
+#if (defined(__WIN32__) || defined(_WIN32)) && !defined(__MINGW32__)
+// For Windoze, we need to implement our own gettimeofday()
+
+// used to make sure that static variables in gettimeofday() aren't initialized simultaneously by multiple threads
+static LONG initializeLock_gettimeofday = 0;  
+
+#if !defined(_WIN32_WCE)
+#include <sys/timeb.h>
+#endif
+
+int gettimeofday(struct timeval* tp, int* /*tz*/) {
+  static LARGE_INTEGER tickFrequency, epochOffset;
+
+  static Boolean isInitialized = False;
+
+  LARGE_INTEGER tickNow;
+
+#if !defined(_WIN32_WCE)
+  QueryPerformanceCounter(&tickNow);
+#else
+  tickNow.QuadPart = GetTickCount();
+#endif
+ 
+  if (!isInitialized) {
+    if(1 == InterlockedIncrement(&initializeLock_gettimeofday)) {
+#if !defined(_WIN32_WCE)
+      // For our first call, use "ftime()", so that we get a time with a proper epoch.
+      // For subsequent calls, use "QueryPerformanceCount()", because it's more fine-grain.
+      struct timeb tb;
+      ftime(&tb);
+      tp->tv_sec = tb.time;
+      tp->tv_usec = 1000*tb.millitm;
+
+      // Also get our counter frequency:
+      QueryPerformanceFrequency(&tickFrequency);
+#else
+      /* FILETIME of Jan 1 1970 00:00:00. */
+      const LONGLONG epoch = 116444736000000000LL;
+      FILETIME fileTime;
+      LARGE_INTEGER time;
+      GetSystemTimeAsFileTime(&fileTime);
+
+      time.HighPart = fileTime.dwHighDateTime;
+      time.LowPart = fileTime.dwLowDateTime;
+
+      // convert to from 100ns time to unix timestamp in seconds, 1000*1000*10
+      tp->tv_sec = (long)((time.QuadPart - epoch) / 10000000L);
+
+      /*
+        GetSystemTimeAsFileTime has just a seconds resolution,
+        thats why wince-version of gettimeofday is not 100% accurate, usec accuracy would be calculated like this:
+        // convert 100 nanoseconds to usec
+        tp->tv_usec= (long)((time.QuadPart - epoch)%10000000L) / 10L;
+      */
+      tp->tv_usec = 0;
+
+      // resolution of GetTickCounter() is always milliseconds
+      tickFrequency.QuadPart = 1000;
+#endif     
+      // compute an offset to add to subsequent counter times, so we get a proper epoch:
+      epochOffset.QuadPart
+          = tp->tv_sec * tickFrequency.QuadPart + (tp->tv_usec * tickFrequency.QuadPart) / 1000000L - tickNow.QuadPart;
+      
+      // next caller can use ticks for time calculation
+      isInitialized = True; 
+      return 0;
+    } else {
+        InterlockedDecrement(&initializeLock_gettimeofday);
+        // wait until first caller has initialized static values
+        while(!isInitialized){
+          Sleep(1);
+        }
+    }
+  }
+
+  // adjust our tick count so that we get a proper epoch:
+  tickNow.QuadPart += epochOffset.QuadPart;
+
+  tp->tv_sec =  (long)(tickNow.QuadPart / tickFrequency.QuadPart);
+  tp->tv_usec = (long)(((tickNow.QuadPart % tickFrequency.QuadPart) * 1000000L) / tickFrequency.QuadPart);
+
+  return 0;
+}
+#endif
+#undef ANDROID_OLD_NDK
diff --git a/groupsock/IOHandlers.cpp b/groupsock/IOHandlers.cpp
new file mode 100644
index 0000000..e69c43e
--- /dev/null
+++ b/groupsock/IOHandlers.cpp
@@ -0,0 +1,46 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// IO event handlers
+// Implementation
+
+#include "IOHandlers.hh"
+#include "TunnelEncaps.hh"
+
+//##### TEMP: Use a single buffer, sized for UDP tunnels:
+//##### This assumes that the I/O handlers are non-reentrant
+static unsigned const maxPacketLength = 50*1024; // bytes
+    // This is usually overkill, because UDP packets are usually no larger
+    // than the typical Ethernet MTU (1500 bytes).  However, I've seen
+    // reports of Windows Media Servers sending UDP packets as large as
+    // 27 kBytes.  These will probably undego lots of IP-level
+    // fragmentation, but that occurs below us.  We just have to hope that
+    // fragments don't get lost.
+static unsigned const ioBufferSize
+	= maxPacketLength + TunnelEncapsulationTrailerMaxSize;
+static unsigned char ioBuffer[ioBufferSize];
+
+
+void socketReadHandler(Socket* sock, int /*mask*/) {
+  unsigned bytesRead;
+  struct sockaddr_in fromAddress;
+  UsageEnvironment& saveEnv = sock->env();
+      // because handleRead(), if it fails, may delete "sock"
+  if (!sock->handleRead(ioBuffer, ioBufferSize, bytesRead, fromAddress)) {
+    saveEnv.reportBackgroundError();
+  }
+}
diff --git a/groupsock/Makefile.head b/groupsock/Makefile.head
new file mode 100644
index 0000000..219f685
--- /dev/null
+++ b/groupsock/Makefile.head
@@ -0,0 +1,4 @@
+INCLUDES = -Iinclude -I../UsageEnvironment/include
+PREFIX = /usr/local
+LIBDIR = $(PREFIX)/lib
+##### Change the following for your environment:
diff --git a/groupsock/Makefile.tail b/groupsock/Makefile.tail
new file mode 100644
index 0000000..89a8593
--- /dev/null
+++ b/groupsock/Makefile.tail
@@ -0,0 +1,45 @@
+##### End of variables to change
+
+NAME = libgroupsock
+ALL = $(NAME).$(LIB_SUFFIX)
+all:	$(ALL)
+
+.$(C).$(OBJ):
+	$(C_COMPILER) -c $(C_FLAGS) $<
+.$(CPP).$(OBJ):
+	$(CPLUSPLUS_COMPILER) -c $(CPLUSPLUS_FLAGS) $<
+
+GROUPSOCK_LIB_OBJS = GroupsockHelper.$(OBJ) GroupEId.$(OBJ) inet.$(OBJ) Groupsock.$(OBJ) NetInterface.$(OBJ) NetAddress.$(OBJ) IOHandlers.$(OBJ)
+
+GroupsockHelper.$(CPP):	include/GroupsockHelper.hh
+include/GroupsockHelper.hh:	include/NetAddress.hh
+include/NetAddress.hh:	include/NetCommon.h
+GroupEId.$(CPP):	include/GroupEId.hh
+include/GroupEId.hh:	include/NetAddress.hh
+inet.$(C):		include/NetCommon.h
+Groupsock.$(CPP):	include/Groupsock.hh include/GroupsockHelper.hh include/TunnelEncaps.hh
+include/Groupsock.hh:	include/groupsock_version.hh include/NetInterface.hh include/GroupEId.hh
+include/NetInterface.hh:	include/NetAddress.hh
+include/TunnelEncaps.hh:	include/NetAddress.hh
+NetInterface.$(CPP):	include/NetInterface.hh include/GroupsockHelper.hh
+NetAddress.$(CPP):	include/NetAddress.hh include/GroupsockHelper.hh
+IOHandlers.$(CPP):	include/IOHandlers.hh include/TunnelEncaps.hh
+
+libgroupsock.$(LIB_SUFFIX): $(GROUPSOCK_LIB_OBJS) \
+    $(PLATFORM_SPECIFIC_LIB_OBJS)
+	$(LIBRARY_LINK)$@ $(LIBRARY_LINK_OPTS) \
+		$(GROUPSOCK_LIB_OBJS)
+
+clean:
+	-rm -rf *.$(OBJ) $(ALL) core *.core *~ include/*~
+
+install: install1 $(INSTALL2)
+install1: libgroupsock.$(LIB_SUFFIX)
+	  install -d $(DESTDIR)$(PREFIX)/include/groupsock $(DESTDIR)$(LIBDIR)
+	  install -m 644 include/*.hh include/*.h $(DESTDIR)$(PREFIX)/include/groupsock
+	  install -m 644 libgroupsock.$(LIB_SUFFIX) $(DESTDIR)$(LIBDIR)
+install_shared_libraries: libgroupsock.$(LIB_SUFFIX)
+	  ln -fs libgroupsock.$(LIB_SUFFIX) $(DESTDIR)$(LIBDIR)/libgroupsock.$(SHORT_LIB_SUFFIX)
+	  ln -fs libgroupsock.$(LIB_SUFFIX) $(DESTDIR)$(LIBDIR)/libgroupsock.so
+
+##### Any additional, platform-specific rules come here:
diff --git a/groupsock/NetAddress.cpp b/groupsock/NetAddress.cpp
new file mode 100644
index 0000000..d99e29c
--- /dev/null
+++ b/groupsock/NetAddress.cpp
@@ -0,0 +1,312 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Network Addresses
+// Implementation
+
+#include "NetAddress.hh"
+#include "GroupsockHelper.hh"
+
+#include <stddef.h>
+#include <stdio.h>
+#if defined(__WIN32__) || defined(_WIN32)
+#define USE_GETHOSTBYNAME 1 /*because at least some Windows don't have getaddrinfo()*/
+#else
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xFFFFFFFF
+#endif
+#endif
+
+////////// NetAddress //////////
+
+NetAddress::NetAddress(u_int8_t const* data, unsigned length) {
+  assign(data, length);
+}
+
+NetAddress::NetAddress(unsigned length) {
+  fData = new u_int8_t[length];
+  if (fData == NULL) {
+    fLength = 0;
+    return;
+  }
+
+  for (unsigned i = 0; i < length; ++i)	fData[i] = 0;
+  fLength = length;
+}
+
+NetAddress::NetAddress(NetAddress const& orig) {
+  assign(orig.data(), orig.length());
+}
+
+NetAddress& NetAddress::operator=(NetAddress const& rightSide) {
+  if (&rightSide != this) {
+    clean();
+    assign(rightSide.data(), rightSide.length());
+  }
+  return *this;
+}
+
+NetAddress::~NetAddress() {
+  clean();
+}
+
+void NetAddress::assign(u_int8_t const* data, unsigned length) {
+  fData = new u_int8_t[length];
+  if (fData == NULL) {
+    fLength = 0;
+    return;
+  }
+
+  for (unsigned i = 0; i < length; ++i)	fData[i] = data[i];
+  fLength = length;
+}
+
+void NetAddress::clean() {
+  delete[] fData; fData = NULL;
+  fLength = 0;
+}
+
+
+////////// NetAddressList //////////
+
+NetAddressList::NetAddressList(char const* hostname)
+  : fNumAddresses(0), fAddressArray(NULL) {
+  // First, check whether "hostname" is an IP address string:
+  netAddressBits addr = our_inet_addr((char*)hostname);
+  if (addr != INADDR_NONE) {
+    // Yes, it was an IP address string.  Return a 1-element list with this address:
+    fNumAddresses = 1;
+    fAddressArray = new NetAddress*[fNumAddresses];
+    if (fAddressArray == NULL) return;
+
+    fAddressArray[0] = new NetAddress((u_int8_t*)&addr, sizeof (netAddressBits));
+    return;
+  }
+    
+  // "hostname" is not an IP address string; try resolving it as a real host name instead:
+#if defined(USE_GETHOSTBYNAME) || defined(VXWORKS)
+  struct hostent* host;
+#if defined(VXWORKS)
+  char hostentBuf[512];
+
+  host = (struct hostent*)resolvGetHostByName((char*)hostname, (char*)&hostentBuf, sizeof hostentBuf);
+#else
+  host = gethostbyname((char*)hostname);
+#endif
+  if (host == NULL || host->h_length != 4 || host->h_addr_list == NULL) return; // no luck
+
+  u_int8_t const** const hAddrPtr = (u_int8_t const**)host->h_addr_list;
+  // First, count the number of addresses:
+  u_int8_t const** hAddrPtr1 = hAddrPtr;
+  while (*hAddrPtr1 != NULL) {
+    ++fNumAddresses;
+    ++hAddrPtr1;
+  }
+
+  // Next, set up the list:
+  fAddressArray = new NetAddress*[fNumAddresses];
+  if (fAddressArray == NULL) return;
+
+  for (unsigned i = 0; i < fNumAddresses; ++i) {
+    fAddressArray[i] = new NetAddress(hAddrPtr[i], host->h_length);
+  }
+#else
+  // Use "getaddrinfo()" (rather than the older, deprecated "gethostbyname()"):
+  struct addrinfo addrinfoHints;
+  memset(&addrinfoHints, 0, sizeof addrinfoHints);
+  addrinfoHints.ai_family = AF_INET; // For now, we're interested in IPv4 addresses only
+  struct addrinfo* addrinfoResultPtr = NULL;
+  int result = getaddrinfo(hostname, NULL, &addrinfoHints, &addrinfoResultPtr);
+  if (result != 0 || addrinfoResultPtr == NULL) return; // no luck
+
+  // First, count the number of addresses:
+  const struct addrinfo* p = addrinfoResultPtr;
+  while (p != NULL) {
+    if (p->ai_addrlen < 4) continue; // sanity check: skip over addresses that are too small
+    ++fNumAddresses;
+    p = p->ai_next;
+  }
+
+  // Next, set up the list:
+  fAddressArray = new NetAddress*[fNumAddresses];
+  if (fAddressArray == NULL) return;
+
+  unsigned i = 0;
+  p = addrinfoResultPtr;
+  while (p != NULL) {
+    if (p->ai_addrlen < 4) continue;
+    fAddressArray[i++] = new NetAddress((u_int8_t const*)&(((struct sockaddr_in*)p->ai_addr)->sin_addr.s_addr), 4);
+    p = p->ai_next;
+  }
+
+  // Finally, free the data that we had allocated by calling "getaddrinfo()":
+  freeaddrinfo(addrinfoResultPtr);
+#endif
+}
+
+NetAddressList::NetAddressList(NetAddressList const& orig) {
+  assign(orig.numAddresses(), orig.fAddressArray);
+}
+
+NetAddressList& NetAddressList::operator=(NetAddressList const& rightSide) {
+  if (&rightSide != this) {
+    clean();
+    assign(rightSide.numAddresses(), rightSide.fAddressArray);
+  }
+  return *this;
+}
+
+NetAddressList::~NetAddressList() {
+  clean();
+}
+
+void NetAddressList::assign(unsigned numAddresses, NetAddress** addressArray) {
+  fAddressArray = new NetAddress*[numAddresses];
+  if (fAddressArray == NULL) {
+    fNumAddresses = 0;
+    return;
+  }
+
+  for (unsigned i = 0; i < numAddresses; ++i) {
+    fAddressArray[i] = new NetAddress(*addressArray[i]);
+  }
+  fNumAddresses = numAddresses;
+}
+
+void NetAddressList::clean() {
+  while (fNumAddresses-- > 0) {
+    delete fAddressArray[fNumAddresses];
+  }
+  delete[] fAddressArray; fAddressArray = NULL;
+}
+
+NetAddress const* NetAddressList::firstAddress() const {
+  if (fNumAddresses == 0) return NULL;
+
+  return fAddressArray[0];
+}
+
+////////// NetAddressList::Iterator //////////
+NetAddressList::Iterator::Iterator(NetAddressList const& addressList)
+  : fAddressList(addressList), fNextIndex(0) {}
+
+NetAddress const* NetAddressList::Iterator::nextAddress() {
+  if (fNextIndex >= fAddressList.numAddresses()) return NULL; // no more
+  return fAddressList.fAddressArray[fNextIndex++];
+}
+
+
+////////// Port //////////
+
+Port::Port(portNumBits num /* in host byte order */) {
+  fPortNum = htons(num);
+}
+
+UsageEnvironment& operator<<(UsageEnvironment& s, const Port& p) {
+  return s << ntohs(p.num());
+}
+
+
+////////// AddressPortLookupTable //////////
+
+AddressPortLookupTable::AddressPortLookupTable()
+  : fTable(HashTable::create(3)) { // three-word keys are used
+}
+
+AddressPortLookupTable::~AddressPortLookupTable() {
+  delete fTable;
+}
+
+void* AddressPortLookupTable::Add(netAddressBits address1,
+				  netAddressBits address2,
+				  Port port, void* value) {
+  int key[3];
+  key[0] = (int)address1;
+  key[1] = (int)address2;
+  key[2] = (int)port.num();
+  return fTable->Add((char*)key, value);
+}
+
+void* AddressPortLookupTable::Lookup(netAddressBits address1,
+				     netAddressBits address2,
+				     Port port) {
+  int key[3];
+  key[0] = (int)address1;
+  key[1] = (int)address2;
+  key[2] = (int)port.num();
+  return fTable->Lookup((char*)key);
+}
+
+Boolean AddressPortLookupTable::Remove(netAddressBits address1,
+				       netAddressBits address2,
+				       Port port) {
+  int key[3];
+  key[0] = (int)address1;
+  key[1] = (int)address2;
+  key[2] = (int)port.num();
+  return fTable->Remove((char*)key);
+}
+
+AddressPortLookupTable::Iterator::Iterator(AddressPortLookupTable& table)
+  : fIter(HashTable::Iterator::create(*(table.fTable))) {
+}
+
+AddressPortLookupTable::Iterator::~Iterator() {
+  delete fIter;
+}
+
+void* AddressPortLookupTable::Iterator::next() {
+  char const* key; // dummy
+  return fIter->next(key);
+}
+
+
+////////// isMulticastAddress() implementation //////////
+
+Boolean IsMulticastAddress(netAddressBits address) {
+  // Note: We return False for addresses in the range 224.0.0.0
+  // through 224.0.0.255, because these are non-routable
+  // Note: IPv4-specific #####
+  netAddressBits addressInNetworkOrder = htonl(address);
+  return addressInNetworkOrder >  0xE00000FF &&
+         addressInNetworkOrder <= 0xEFFFFFFF;
+}
+
+
+////////// AddressString implementation //////////
+
+AddressString::AddressString(struct sockaddr_in const& addr) {
+  init(addr.sin_addr.s_addr);
+}
+
+AddressString::AddressString(struct in_addr const& addr) {
+  init(addr.s_addr);
+}
+
+AddressString::AddressString(netAddressBits addr) {
+  init(addr);
+}
+
+void AddressString::init(netAddressBits addr) {
+  fVal = new char[16]; // large enough for "abc.def.ghi.jkl"
+  netAddressBits addrNBO = htonl(addr); // make sure we have a value in a known byte order: big endian
+  sprintf(fVal, "%u.%u.%u.%u", (addrNBO>>24)&0xFF, (addrNBO>>16)&0xFF, (addrNBO>>8)&0xFF, addrNBO&0xFF);
+}
+
+AddressString::~AddressString() {
+  delete[] fVal;
+}
diff --git a/groupsock/NetInterface.cpp b/groupsock/NetInterface.cpp
new file mode 100644
index 0000000..2fc0af1
--- /dev/null
+++ b/groupsock/NetInterface.cpp
@@ -0,0 +1,174 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Network Interfaces
+// Implementation
+
+#include "NetInterface.hh"
+#include "GroupsockHelper.hh"
+
+#ifndef NO_SSTREAM
+#include <sstream>
+#endif
+#include <stdio.h>
+
+////////// NetInterface //////////
+
+UsageEnvironment* NetInterface::DefaultUsageEnvironment = NULL;
+
+NetInterface::NetInterface() {
+}
+
+NetInterface::~NetInterface() {
+}
+
+
+////////// NetInterface //////////
+
+DirectedNetInterface::DirectedNetInterface() {
+}
+
+DirectedNetInterface::~DirectedNetInterface() {
+}
+
+
+////////// DirectedNetInterfaceSet //////////
+
+DirectedNetInterfaceSet::DirectedNetInterfaceSet()
+	: fTable(HashTable::create(ONE_WORD_HASH_KEYS)) {
+}
+
+DirectedNetInterfaceSet::~DirectedNetInterfaceSet() {
+	delete fTable;
+}
+
+DirectedNetInterface*
+DirectedNetInterfaceSet::Add(DirectedNetInterface const* interf) {
+  return (DirectedNetInterface*) fTable->Add((char*)interf, (void*)interf);
+}
+
+Boolean
+DirectedNetInterfaceSet::Remove(DirectedNetInterface const* interf) {
+  return fTable->Remove((char*)interf);
+}
+
+DirectedNetInterfaceSet::Iterator::
+Iterator(DirectedNetInterfaceSet& interfaces)
+  : fIter(HashTable::Iterator::create(*(interfaces.fTable))) {
+}
+
+DirectedNetInterfaceSet::Iterator::~Iterator() {
+  delete fIter;
+}
+
+DirectedNetInterface* DirectedNetInterfaceSet::Iterator::next() {
+  char const* key; // dummy
+  return (DirectedNetInterface*) fIter->next(key);
+};
+
+
+////////// Socket //////////
+
+int Socket::DebugLevel = 1; // default value
+
+Socket::Socket(UsageEnvironment& env, Port port)
+  : fEnv(DefaultUsageEnvironment != NULL ? *DefaultUsageEnvironment : env), fPort(port) {
+  fSocketNum = setupDatagramSocket(fEnv, port);
+}
+
+void Socket::reset() {
+  if (fSocketNum >= 0) closeSocket(fSocketNum);
+  fSocketNum = -1;
+}
+
+Socket::~Socket() {
+  reset();
+}
+
+Boolean Socket::changePort(Port newPort) {
+  int oldSocketNum = fSocketNum;
+  unsigned oldReceiveBufferSize = getReceiveBufferSize(fEnv, fSocketNum);
+  unsigned oldSendBufferSize = getSendBufferSize(fEnv, fSocketNum);
+  closeSocket(fSocketNum);
+
+  fSocketNum = setupDatagramSocket(fEnv, newPort);
+  if (fSocketNum < 0) {
+    fEnv.taskScheduler().turnOffBackgroundReadHandling(oldSocketNum);
+    return False;
+  }
+
+  setReceiveBufferTo(fEnv, fSocketNum, oldReceiveBufferSize);
+  setSendBufferTo(fEnv, fSocketNum, oldSendBufferSize);
+  if (fSocketNum != oldSocketNum) { // the socket number has changed, so move any event handling for it:
+    fEnv.taskScheduler().moveSocketHandling(oldSocketNum, fSocketNum);
+  }
+  return True;
+}
+
+UsageEnvironment& operator<<(UsageEnvironment& s, const Socket& sock) {
+	return s << timestampString() << " Socket(" << sock.socketNum() << ")";
+}
+
+////////// SocketLookupTable //////////
+
+SocketLookupTable::SocketLookupTable()
+  : fTable(HashTable::create(ONE_WORD_HASH_KEYS)) {
+}
+
+SocketLookupTable::~SocketLookupTable() {
+  delete fTable;
+}
+
+Socket* SocketLookupTable::Fetch(UsageEnvironment& env, Port port,
+				 Boolean& isNew) {
+  isNew = False;
+  Socket* sock;
+  do {
+    sock = (Socket*) fTable->Lookup((char*)(long)(port.num()));
+    if (sock == NULL) { // we need to create one:
+      sock = CreateNew(env, port);
+      if (sock == NULL || sock->socketNum() < 0) break;
+
+      fTable->Add((char*)(long)(port.num()), (void*)sock);
+      isNew = True;
+    }
+
+    return sock;
+  } while (0);
+
+  delete sock;
+  return NULL;
+}
+
+Boolean SocketLookupTable::Remove(Socket const* sock) {
+  return fTable->Remove( (char*)(long)(sock->port().num()) );
+}
+
+////////// NetInterfaceTrafficStats //////////
+
+NetInterfaceTrafficStats::NetInterfaceTrafficStats() {
+  fTotNumPackets = fTotNumBytes = 0.0;
+}
+
+void NetInterfaceTrafficStats::countPacket(unsigned packetSize) {
+  fTotNumPackets += 1.0;
+  fTotNumBytes += packetSize;
+}
+
+Boolean NetInterfaceTrafficStats::haveSeenTraffic() const {
+  return fTotNumPackets != 0.0;
+}
diff --git a/groupsock/include/GroupEId.hh b/groupsock/include/GroupEId.hh
new file mode 100644
index 0000000..e7fc6be
--- /dev/null
+++ b/groupsock/include/GroupEId.hh
@@ -0,0 +1,64 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "multikit" Multicast Application Shell
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// "Group Endpoint Id"
+// C++ header
+
+#ifndef _GROUPEID_HH
+#define _GROUPEID_HH
+
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+
+#ifndef _NET_ADDRESS_HH
+#include "NetAddress.hh"
+#endif
+
+class GroupEId {
+public:
+  GroupEId(struct in_addr const& groupAddr,
+	   portNumBits portNum, u_int8_t ttl);
+      // used for a 'source-independent multicast' group
+  GroupEId(struct in_addr const& groupAddr,
+	   struct in_addr const& sourceFilterAddr,
+	   portNumBits portNum);
+      // used for a 'source-specific multicast' group
+
+  struct in_addr const& groupAddress() const { return fGroupAddress; }
+  struct in_addr const& sourceFilterAddress() const { return fSourceFilterAddress; }
+
+  Boolean isSSM() const;
+
+  portNumBits portNum() const { return fPortNum; }
+
+  u_int8_t ttl() const { return fTTL; }
+
+private:
+  void init(struct in_addr const& groupAddr,
+	    struct in_addr const& sourceFilterAddr,
+	    portNumBits portNum,
+	    u_int8_t ttl);
+
+private:
+  struct in_addr fGroupAddress;
+  struct in_addr fSourceFilterAddress;
+  portNumBits fPortNum; // in network byte order
+  u_int8_t fTTL;
+};
+
+#endif
diff --git a/groupsock/include/Groupsock.hh b/groupsock/include/Groupsock.hh
new file mode 100644
index 0000000..b3a7604
--- /dev/null
+++ b/groupsock/include/Groupsock.hh
@@ -0,0 +1,218 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// 'Group sockets'
+// C++ header
+
+#ifndef _GROUPSOCK_HH
+#define _GROUPSOCK_HH
+
+#ifndef _GROUPSOCK_VERSION_HH
+#include "groupsock_version.hh"
+#endif
+
+#ifndef _NET_INTERFACE_HH
+#include "NetInterface.hh"
+#endif
+
+#ifndef _GROUPEID_HH
+#include "GroupEId.hh"
+#endif
+
+// An "OutputSocket" is (by default) used only to send packets.
+// No packets are received on it (unless a subclass arranges this)
+
+class OutputSocket: public Socket {
+public:
+  OutputSocket(UsageEnvironment& env);
+  virtual ~OutputSocket();
+
+  virtual Boolean write(netAddressBits address, portNumBits portNum/*in network order*/, u_int8_t ttl,
+			unsigned char* buffer, unsigned bufferSize);
+  Boolean write(struct sockaddr_in& addressAndPort, u_int8_t ttl,
+		unsigned char* buffer, unsigned bufferSize) {
+    return write(addressAndPort.sin_addr.s_addr, addressAndPort.sin_port, ttl, buffer, bufferSize);
+  }
+
+protected:
+  OutputSocket(UsageEnvironment& env, Port port);
+
+  portNumBits sourcePortNum() const {return fSourcePort.num();}
+
+private: // redefined virtual function
+  virtual Boolean handleRead(unsigned char* buffer, unsigned bufferMaxSize,
+			     unsigned& bytesRead,
+			     struct sockaddr_in& fromAddressAndPort);
+
+private:
+  Port fSourcePort;
+  unsigned fLastSentTTL;
+};
+
+class destRecord {
+public:
+  destRecord(struct in_addr const& addr, Port const& port, u_int8_t ttl, unsigned sessionId,
+	     destRecord* next);
+  virtual ~destRecord();
+
+public:
+  destRecord* fNext;
+  GroupEId fGroupEId;
+  unsigned fSessionId;
+};
+
+// A "Groupsock" is used to both send and receive packets.
+// As the name suggests, it was originally designed to send/receive
+// multicast, but it can send/receive unicast as well.
+
+class Groupsock: public OutputSocket {
+public:
+  Groupsock(UsageEnvironment& env, struct in_addr const& groupAddr,
+	    Port port, u_int8_t ttl);
+      // used for a 'source-independent multicast' group
+  Groupsock(UsageEnvironment& env, struct in_addr const& groupAddr,
+	    struct in_addr const& sourceFilterAddr,
+	    Port port);
+      // used for a 'source-specific multicast' group
+  virtual ~Groupsock();
+
+  virtual destRecord* createNewDestRecord(struct in_addr const& addr, Port const& port, u_int8_t ttl, unsigned sessionId, destRecord* next);
+      // Can be redefined by subclasses that also subclass "destRecord"
+
+  void changeDestinationParameters(struct in_addr const& newDestAddr,
+				   Port newDestPort, int newDestTTL,
+				   unsigned sessionId = 0);
+      // By default, the destination address, port and ttl for
+      // outgoing packets are those that were specified in
+      // the constructor.  This works OK for multicast sockets,
+      // but for unicast we usually want the destination port
+      // number, at least, to be different from the source port.
+      // (If a parameter is 0 (or ~0 for ttl), then no change is made to that parameter.)
+      // (If no existing "destRecord" exists with this "sessionId", then we add a new "destRecord".)
+  unsigned lookupSessionIdFromDestination(struct sockaddr_in const& destAddrAndPort) const;
+      // returns 0 if not found
+
+  // As a special case, we also allow multiple destinations (addresses & ports)
+  // (This can be used to implement multi-unicast.)
+  virtual void addDestination(struct in_addr const& addr, Port const& port, unsigned sessionId);
+  virtual void removeDestination(unsigned sessionId);
+  void removeAllDestinations();
+  Boolean hasMultipleDestinations() const { return fDests != NULL && fDests->fNext != NULL; }
+
+  struct in_addr const& groupAddress() const {
+    return fIncomingGroupEId.groupAddress();
+  }
+  struct in_addr const& sourceFilterAddress() const {
+    return fIncomingGroupEId.sourceFilterAddress();
+  }
+
+  Boolean isSSM() const {
+    return fIncomingGroupEId.isSSM();
+  }
+
+  u_int8_t ttl() const { return fIncomingGroupEId.ttl(); }
+
+  void multicastSendOnly(); // send, but don't receive any multicast packets
+
+  virtual Boolean output(UsageEnvironment& env, unsigned char* buffer, unsigned bufferSize,
+			 DirectedNetInterface* interfaceNotToFwdBackTo = NULL);
+
+  DirectedNetInterfaceSet& members() { return fMembers; }
+
+  Boolean deleteIfNoMembers;
+  Boolean isSlave; // for tunneling
+
+  static NetInterfaceTrafficStats statsIncoming;
+  static NetInterfaceTrafficStats statsOutgoing;
+  static NetInterfaceTrafficStats statsRelayedIncoming;
+  static NetInterfaceTrafficStats statsRelayedOutgoing;
+  NetInterfaceTrafficStats statsGroupIncoming; // *not* static
+  NetInterfaceTrafficStats statsGroupOutgoing; // *not* static
+  NetInterfaceTrafficStats statsGroupRelayedIncoming; // *not* static
+  NetInterfaceTrafficStats statsGroupRelayedOutgoing; // *not* static
+
+  Boolean wasLoopedBackFromUs(UsageEnvironment& env, struct sockaddr_in& fromAddressAndPort);
+
+public: // redefined virtual functions
+  virtual Boolean handleRead(unsigned char* buffer, unsigned bufferMaxSize,
+			     unsigned& bytesRead,
+			     struct sockaddr_in& fromAddressAndPort);
+
+protected:
+  destRecord* lookupDestRecordFromDestination(struct sockaddr_in const& destAddrAndPort) const;
+
+private:
+  void removeDestinationFrom(destRecord*& dests, unsigned sessionId);
+    // used to implement (the public) "removeDestination()", and "changeDestinationParameters()"
+  int outputToAllMembersExcept(DirectedNetInterface* exceptInterface,
+			       u_int8_t ttlToFwd,
+			       unsigned char* data, unsigned size,
+			       netAddressBits sourceAddr);
+
+protected:
+  destRecord* fDests;
+private:
+  GroupEId fIncomingGroupEId;
+  DirectedNetInterfaceSet fMembers;
+};
+
+UsageEnvironment& operator<<(UsageEnvironment& s, const Groupsock& g);
+
+// A data structure for looking up a 'groupsock'
+// by (multicast address, port), or by socket number
+class GroupsockLookupTable {
+public:
+  Groupsock* Fetch(UsageEnvironment& env, netAddressBits groupAddress,
+		   Port port, u_int8_t ttl, Boolean& isNew);
+      // Creates a new Groupsock if none already exists
+  Groupsock* Fetch(UsageEnvironment& env, netAddressBits groupAddress,
+		   netAddressBits sourceFilterAddr,
+		   Port port, Boolean& isNew);
+      // Creates a new Groupsock if none already exists
+  Groupsock* Lookup(netAddressBits groupAddress, Port port);
+      // Returns NULL if none already exists
+  Groupsock* Lookup(netAddressBits groupAddress,
+		    netAddressBits sourceFilterAddr,
+		    Port port);
+      // Returns NULL if none already exists
+  Groupsock* Lookup(UsageEnvironment& env, int sock);
+      // Returns NULL if none already exists
+  Boolean Remove(Groupsock const* groupsock);
+
+  // Used to iterate through the groupsocks in the table
+  class Iterator {
+  public:
+    Iterator(GroupsockLookupTable& groupsocks);
+
+    Groupsock* next(); // NULL iff none
+
+  private:
+    AddressPortLookupTable::Iterator fIter;
+  };
+
+private:
+  Groupsock* AddNew(UsageEnvironment& env,
+		    netAddressBits groupAddress,
+		    netAddressBits sourceFilterAddress,
+		    Port port, u_int8_t ttl);
+
+private:
+  friend class Iterator;
+  AddressPortLookupTable fTable;
+};
+
+#endif
diff --git a/groupsock/include/GroupsockHelper.hh b/groupsock/include/GroupsockHelper.hh
new file mode 100644
index 0000000..503ab26
--- /dev/null
+++ b/groupsock/include/GroupsockHelper.hh
@@ -0,0 +1,147 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Helper routines to implement 'group sockets'
+// C++ header
+
+#ifndef _GROUPSOCK_HELPER_HH
+#define _GROUPSOCK_HELPER_HH
+
+#ifndef _NET_ADDRESS_HH
+#include "NetAddress.hh"
+#endif
+
+int setupDatagramSocket(UsageEnvironment& env, Port port);
+int setupStreamSocket(UsageEnvironment& env,
+		      Port port, Boolean makeNonBlocking = True, Boolean setKeepAlive = False);
+
+int readSocket(UsageEnvironment& env,
+	       int socket, unsigned char* buffer, unsigned bufferSize,
+	       struct sockaddr_in& fromAddress);
+
+Boolean writeSocket(UsageEnvironment& env,
+		    int socket, struct in_addr address, portNumBits portNum/*network byte order*/,
+		    u_int8_t ttlArg,
+		    unsigned char* buffer, unsigned bufferSize);
+
+Boolean writeSocket(UsageEnvironment& env,
+		    int socket, struct in_addr address, portNumBits portNum/*network byte order*/,
+		    unsigned char* buffer, unsigned bufferSize);
+    // An optimized version of "writeSocket" that omits the "setsockopt()" call to set the TTL.
+
+void ignoreSigPipeOnSocket(int socketNum);
+
+unsigned getSendBufferSize(UsageEnvironment& env, int socket);
+unsigned getReceiveBufferSize(UsageEnvironment& env, int socket);
+unsigned setSendBufferTo(UsageEnvironment& env,
+			 int socket, unsigned requestedSize);
+unsigned setReceiveBufferTo(UsageEnvironment& env,
+			    int socket, unsigned requestedSize);
+unsigned increaseSendBufferTo(UsageEnvironment& env,
+			      int socket, unsigned requestedSize);
+unsigned increaseReceiveBufferTo(UsageEnvironment& env,
+				 int socket, unsigned requestedSize);
+
+Boolean makeSocketNonBlocking(int sock);
+Boolean makeSocketBlocking(int sock, unsigned writeTimeoutInMilliseconds = 0);
+  // A "writeTimeoutInMilliseconds" value of 0 means: Don't timeout
+Boolean setSocketKeepAlive(int sock);
+
+Boolean socketJoinGroup(UsageEnvironment& env, int socket,
+			netAddressBits groupAddress);
+Boolean socketLeaveGroup(UsageEnvironment&, int socket,
+			 netAddressBits groupAddress);
+
+// source-specific multicast join/leave
+Boolean socketJoinGroupSSM(UsageEnvironment& env, int socket,
+			   netAddressBits groupAddress,
+			   netAddressBits sourceFilterAddr);
+Boolean socketLeaveGroupSSM(UsageEnvironment&, int socket,
+			    netAddressBits groupAddress,
+			    netAddressBits sourceFilterAddr);
+
+Boolean getSourcePort(UsageEnvironment& env, int socket, Port& port);
+
+netAddressBits ourIPAddress(UsageEnvironment& env); // in network order
+
+// IP addresses of our sending and receiving interfaces.  (By default, these
+// are INADDR_ANY (i.e., 0), specifying the default interface.)
+extern netAddressBits SendingInterfaceAddr;
+extern netAddressBits ReceivingInterfaceAddr;
+
+// Allocates a randomly-chosen IPv4 SSM (multicast) address:
+netAddressBits chooseRandomIPv4SSMAddress(UsageEnvironment& env);
+
+// Returns a simple "hh:mm:ss" string, for use in debugging output (e.g.)
+char const* timestampString();
+
+
+#ifdef HAVE_SOCKADDR_LEN
+#define SET_SOCKADDR_SIN_LEN(var) var.sin_len = sizeof var
+#else
+#define SET_SOCKADDR_SIN_LEN(var)
+#endif
+
+#define MAKE_SOCKADDR_IN(var,adr,prt) /*adr,prt must be in network order*/\
+    struct sockaddr_in var;\
+    var.sin_family = AF_INET;\
+    var.sin_addr.s_addr = (adr);\
+    var.sin_port = (prt);\
+    SET_SOCKADDR_SIN_LEN(var);
+
+
+// By default, we create sockets with the SO_REUSE_* flag set.
+// If, instead, you want to create sockets without the SO_REUSE_* flags,
+// Then enclose the creation code with:
+//          {
+//            NoReuse dummy;
+//            ...
+//          }
+class NoReuse {
+public:
+  NoReuse(UsageEnvironment& env);
+  ~NoReuse();
+
+private:
+  UsageEnvironment& fEnv;
+};
+
+
+// Define the "UsageEnvironment"-specific "groupsockPriv" structure:
+
+struct _groupsockPriv { // There should be only one of these allocated
+  HashTable* socketTable;
+  int reuseFlag;
+};
+_groupsockPriv* groupsockPriv(UsageEnvironment& env); // allocates it if necessary
+void reclaimGroupsockPriv(UsageEnvironment& env);
+
+
+#if (defined(__WIN32__) || defined(_WIN32)) && !defined(__MINGW32__)
+// For Windoze, we need to implement our own gettimeofday()
+extern int gettimeofday(struct timeval*, int*);
+#else
+#include <sys/time.h>
+#endif
+
+// The following are implemented in inet.c:
+extern "C" netAddressBits our_inet_addr(char const*);
+extern "C" void our_srandom(int x);
+extern "C" long our_random();
+extern "C" u_int32_t our_random32(); // because "our_random()" returns a 31-bit number
+
+#endif
diff --git a/groupsock/include/IOHandlers.hh b/groupsock/include/IOHandlers.hh
new file mode 100644
index 0000000..23375b0
--- /dev/null
+++ b/groupsock/include/IOHandlers.hh
@@ -0,0 +1,31 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// IO event handlers
+// C++ header
+
+#ifndef _IO_HANDLERS_HH
+#define _IO_HANDLERS_HH
+
+#ifndef _NET_INTERFACE_HH
+#include "NetInterface.hh"
+#endif
+
+// Handles incoming data on sockets:
+void socketReadHandler(Socket* sock, int mask);
+
+#endif
diff --git a/groupsock/include/NetAddress.hh b/groupsock/include/NetAddress.hh
new file mode 100644
index 0000000..909bba2
--- /dev/null
+++ b/groupsock/include/NetAddress.hh
@@ -0,0 +1,162 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Network Addresses
+// C++ header
+
+#ifndef _NET_ADDRESS_HH
+#define _NET_ADDRESS_HH
+
+#ifndef _HASH_TABLE_HH
+#include "HashTable.hh"
+#endif
+
+#ifndef _NET_COMMON_H
+#include "NetCommon.h"
+#endif
+
+#ifndef _USAGE_ENVIRONMENT_HH
+#include "UsageEnvironment.hh"
+#endif
+
+// Definition of a type representing a low-level network address.
+// At present, this is 32-bits, for IPv4.  Later, generalize it,
+// to allow for IPv6.
+typedef u_int32_t netAddressBits;
+
+class NetAddress {
+public:
+  NetAddress(u_int8_t const* data,
+	     unsigned length = 4 /* default: 32 bits */);
+  NetAddress(unsigned length = 4); // sets address data to all-zeros
+  NetAddress(NetAddress const& orig);
+  NetAddress& operator=(NetAddress const& rightSide);
+  virtual ~NetAddress();
+  
+  unsigned length() const { return fLength; }
+  u_int8_t const* data() const // always in network byte order
+  { return fData; }
+  
+private:
+  void assign(u_int8_t const* data, unsigned length);
+  void clean();
+  
+  unsigned fLength;
+  u_int8_t* fData;
+};
+
+class NetAddressList {
+public:
+  NetAddressList(char const* hostname);
+  NetAddressList(NetAddressList const& orig);
+  NetAddressList& operator=(NetAddressList const& rightSide);
+  virtual ~NetAddressList();
+  
+  unsigned numAddresses() const { return fNumAddresses; }
+  
+  NetAddress const* firstAddress() const;
+  
+  // Used to iterate through the addresses in a list:
+  class Iterator {
+  public:
+    Iterator(NetAddressList const& addressList);
+    NetAddress const* nextAddress(); // NULL iff none
+  private:
+    NetAddressList const& fAddressList;
+    unsigned fNextIndex;
+  };
+  
+private:
+  void assign(netAddressBits numAddresses, NetAddress** addressArray);
+  void clean();
+  
+  friend class Iterator;
+  unsigned fNumAddresses;
+  NetAddress** fAddressArray;
+};
+
+typedef u_int16_t portNumBits;
+
+class Port {
+public:
+  Port(portNumBits num /* in host byte order */);
+  
+  portNumBits num() const { return fPortNum; } // in network byte order
+  
+private:
+  portNumBits fPortNum; // stored in network byte order
+#ifdef IRIX
+  portNumBits filler; // hack to overcome a bug in IRIX C++ compiler
+#endif
+};
+
+UsageEnvironment& operator<<(UsageEnvironment& s, const Port& p);
+
+
+// A generic table for looking up objects by (address1, address2, port)
+class AddressPortLookupTable {
+public:
+  AddressPortLookupTable();
+  virtual ~AddressPortLookupTable();
+  
+  void* Add(netAddressBits address1, netAddressBits address2, Port port, void* value);
+      // Returns the old value if different, otherwise 0
+  Boolean Remove(netAddressBits address1, netAddressBits address2, Port port);
+  void* Lookup(netAddressBits address1, netAddressBits address2, Port port);
+      // Returns 0 if not found
+  void* RemoveNext() { return fTable->RemoveNext(); }
+
+  // Used to iterate through the entries in the table
+  class Iterator {
+  public:
+    Iterator(AddressPortLookupTable& table);
+    virtual ~Iterator();
+    
+    void* next(); // NULL iff none
+    
+  private:
+    HashTable::Iterator* fIter;
+  };
+  
+private:
+  friend class Iterator;
+  HashTable* fTable;
+};
+
+
+Boolean IsMulticastAddress(netAddressBits address);
+
+
+// A mechanism for displaying an IPv4 address in ASCII.  This is intended to replace "inet_ntoa()", which is not thread-safe.
+class AddressString {
+public:
+  AddressString(struct sockaddr_in const& addr);
+  AddressString(struct in_addr const& addr);
+  AddressString(netAddressBits addr); // "addr" is assumed to be in host byte order here
+
+  virtual ~AddressString();
+
+  char const* val() const { return fVal; }
+
+private:
+  void init(netAddressBits addr); // used to implement each of the constructors
+
+private:
+  char* fVal; // The result ASCII string: allocated by the constructor; deleted by the destructor
+};
+
+#endif
diff --git a/groupsock/include/NetCommon.h b/groupsock/include/NetCommon.h
new file mode 100644
index 0000000..eab1abb
--- /dev/null
+++ b/groupsock/include/NetCommon.h
@@ -0,0 +1,126 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+/* "groupsock" interface
+ * Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+ * Common include files, typically used for networking
+ */
+
+#ifndef _NET_COMMON_H
+#define _NET_COMMON_H
+
+#if defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_WCE)
+/* Windows */
+#if defined(WINNT) || defined(_WINNT) || defined(__BORLANDC__) || defined(__MINGW32__) || defined(_WIN32_WCE) || defined (_MSC_VER)
+#define _MSWSOCK_
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#endif
+#include <windows.h>
+#include <errno.h>
+#include <string.h>
+
+#define closeSocket closesocket
+#ifdef EWOULDBLOCK
+#undef EWOULDBLOCK
+#endif
+#ifdef EINPROGRESS
+#undef EINPROGRESS
+#endif
+#ifdef EAGAIN
+#undef EAGAIN
+#endif
+#ifdef EINTR
+#undef EINTR
+#endif
+#define EWOULDBLOCK WSAEWOULDBLOCK
+#define EINPROGRESS WSAEWOULDBLOCK
+#define EAGAIN WSAEWOULDBLOCK
+#define EINTR WSAEINTR
+
+#if defined(_WIN32_WCE)
+#define NO_STRSTREAM 1
+#endif
+
+/* Definitions of size-specific types: */
+typedef __int64 int64_t;
+typedef unsigned __int64 u_int64_t;
+
+typedef int int32_t;
+typedef unsigned u_int32_t;
+
+typedef short int16_t;
+typedef unsigned short u_int16_t;
+
+typedef unsigned char u_int8_t;
+
+// For "uintptr_t" and "intptr_t", we assume that if they're not already defined, then this must be
+// an old, 32-bit version of Windows:
+#if !defined(_MSC_STDINT_H_) && !defined(_UINTPTR_T_DEFINED) && !defined(_UINTPTR_T_DECLARED) && !defined(_UINTPTR_T)
+typedef unsigned uintptr_t;
+#endif
+#if !defined(_MSC_STDINT_H_) && !defined(_INTPTR_T_DEFINED) && !defined(_INTPTR_T_DECLARED) && !defined(_INTPTR_T)
+typedef int intptr_t;
+#endif
+
+#elif defined(VXWORKS)
+/* VxWorks */
+#include <time.h>
+#include <timers.h>
+#include <sys/times.h>
+#include <sockLib.h>
+#include <hostLib.h>
+#include <resolvLib.h>
+#include <ioLib.h>
+
+typedef unsigned int u_int32_t;
+typedef unsigned short u_int16_t;
+typedef unsigned char u_int8_t;
+
+#else
+/* Unix */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <strings.h>
+#include <ctype.h>
+#include <stdint.h>
+#if defined(_QNX4)
+#include <sys/select.h>
+#include <unix.h>
+#endif
+
+#define closeSocket close
+
+#ifdef SOLARIS
+#define u_int64_t uint64_t
+#define u_int32_t uint32_t
+#define u_int16_t uint16_t
+#define u_int8_t uint8_t
+#endif
+#endif
+
+#ifndef SOCKLEN_T
+#define SOCKLEN_T int
+#endif
+
+#endif
diff --git a/groupsock/include/NetInterface.hh b/groupsock/include/NetInterface.hh
new file mode 100644
index 0000000..3489b32
--- /dev/null
+++ b/groupsock/include/NetInterface.hh
@@ -0,0 +1,149 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Network Interfaces
+// C++ header
+
+#ifndef _NET_INTERFACE_HH
+#define _NET_INTERFACE_HH
+
+#ifndef _NET_ADDRESS_HH
+#include "NetAddress.hh"
+#endif
+
+class NetInterface {
+public:
+  virtual ~NetInterface();
+
+  static UsageEnvironment* DefaultUsageEnvironment;
+      // if non-NULL, used for each new interfaces
+
+protected:
+  NetInterface(); // virtual base class
+};
+
+class DirectedNetInterface: public NetInterface {
+public:
+  virtual ~DirectedNetInterface();
+
+  virtual Boolean write(unsigned char* data, unsigned numBytes) = 0;
+
+  virtual Boolean SourceAddrOKForRelaying(UsageEnvironment& env,
+					  unsigned addr) = 0;
+
+protected:
+  DirectedNetInterface(); // virtual base class
+};
+
+class DirectedNetInterfaceSet {
+public:
+  DirectedNetInterfaceSet();
+  virtual ~DirectedNetInterfaceSet();
+
+  DirectedNetInterface* Add(DirectedNetInterface const* interf);
+      // Returns the old value if different, otherwise 0
+  Boolean Remove(DirectedNetInterface const* interf);
+
+  Boolean IsEmpty() { return fTable->IsEmpty(); }
+
+  // Used to iterate through the interfaces in the set
+  class Iterator {
+  public:
+    Iterator(DirectedNetInterfaceSet& interfaces);
+    virtual ~Iterator();
+
+    DirectedNetInterface* next(); // NULL iff none
+
+  private:
+    HashTable::Iterator* fIter;
+  };
+
+private:
+  friend class Iterator;
+  HashTable* fTable;
+};
+
+class Socket: public NetInterface {
+public:
+  virtual ~Socket();
+  void reset(); // closes the socket, and sets "fSocketNum" to -1
+
+  virtual Boolean handleRead(unsigned char* buffer, unsigned bufferMaxSize,
+			     unsigned& bytesRead,
+			     struct sockaddr_in& fromAddress) = 0;
+      // Returns False on error; resultData == NULL if data ignored
+
+  int socketNum() const { return fSocketNum; }
+
+  Port port() const {
+    return fPort;
+  }
+
+  UsageEnvironment& env() const { return fEnv; }
+
+  static int DebugLevel;
+
+protected:
+  Socket(UsageEnvironment& env, Port port); // virtual base class
+
+  Boolean changePort(Port newPort); // will also cause socketNum() to change
+
+private:
+  int fSocketNum;
+  UsageEnvironment& fEnv;
+  Port fPort;
+};
+
+UsageEnvironment& operator<<(UsageEnvironment& s, const Socket& sock);
+
+// A data structure for looking up a Socket by port:
+
+class SocketLookupTable {
+public:
+  virtual ~SocketLookupTable();
+
+  Socket* Fetch(UsageEnvironment& env, Port port, Boolean& isNew);
+  // Creates a new Socket if none already exists
+  Boolean Remove(Socket const* sock);
+
+protected:
+  SocketLookupTable(); // abstract base class
+  virtual Socket* CreateNew(UsageEnvironment& env, Port port) = 0;
+
+private:
+  HashTable* fTable;
+};
+
+// A data structure for counting traffic:
+
+class NetInterfaceTrafficStats {
+public:
+  NetInterfaceTrafficStats();
+
+  void countPacket(unsigned packetSize);
+
+  float totNumPackets() const {return fTotNumPackets;}
+  float totNumBytes() const {return fTotNumBytes;}
+
+  Boolean haveSeenTraffic() const;
+
+private:
+  float fTotNumPackets;
+  float fTotNumBytes;
+};
+
+#endif
diff --git a/groupsock/include/TunnelEncaps.hh b/groupsock/include/TunnelEncaps.hh
new file mode 100644
index 0000000..1b21d07
--- /dev/null
+++ b/groupsock/include/TunnelEncaps.hh
@@ -0,0 +1,101 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "mTunnel" multicast access service
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Encapsulation trailer for tunnels
+// C++ header
+
+#ifndef _TUNNEL_ENCAPS_HH
+#define _TUNNEL_ENCAPS_HH
+
+#ifndef _NET_ADDRESS_HH
+#include "NetAddress.hh"
+#endif
+
+typedef u_int16_t Cookie;
+
+class TunnelEncapsulationTrailer {
+	// The trailer is layed out as follows:
+	// bytes 0-1:	source 'cookie'
+	// bytes 2-3:	destination 'cookie'
+	// bytes 4-7:	address
+	// bytes 8-9:	port
+	// byte 10:	ttl
+	// byte 11:	command
+
+        // Optionally, there may also be a 4-byte 'auxilliary address'
+        // (e.g., for 'source-specific multicast' preceding this)
+        // bytes -4 through -1: auxilliary address
+
+    public:
+	Cookie& srcCookie()
+		{ return *(Cookie*)byteOffset(0); }
+	Cookie& dstCookie()
+		{ return *(Cookie*)byteOffset(2); }
+	u_int32_t& address()
+		{ return *(u_int32_t*)byteOffset(4); }
+	Port& port()
+		{ return *(Port*)byteOffset(8); }
+	u_int8_t& ttl()
+		{ return *(u_int8_t*)byteOffset(10); }
+	u_int8_t& command()
+		{ return *(u_int8_t*)byteOffset(11); }
+
+        u_int32_t& auxAddress()
+                { return *(u_int32_t*)byteOffset(-4); }
+
+    private:
+	inline char* byteOffset(int charIndex)
+		{ return ((char*)this) + charIndex; }
+};
+
+const unsigned TunnelEncapsulationTrailerSize = 12; // bytes
+const unsigned TunnelEncapsulationTrailerAuxSize = 4; // bytes
+const unsigned TunnelEncapsulationTrailerMaxSize
+    = TunnelEncapsulationTrailerSize + TunnelEncapsulationTrailerAuxSize;
+
+// Command codes:
+// 0: unused
+const u_int8_t TunnelDataCmd = 1;
+const u_int8_t TunnelJoinGroupCmd = 2;
+const u_int8_t TunnelLeaveGroupCmd = 3;
+const u_int8_t TunnelTearDownCmd = 4;
+const u_int8_t TunnelProbeCmd = 5;
+const u_int8_t TunnelProbeAckCmd = 6;
+const u_int8_t TunnelProbeNackCmd = 7;
+const u_int8_t TunnelJoinRTPGroupCmd = 8;
+const u_int8_t TunnelLeaveRTPGroupCmd = 9;
+// 0x0A through 0x10: currently unused.
+const u_int8_t TunnelExtensionFlag = 0x80; // a flag, not a cmd code
+const u_int8_t TunnelDataAuxCmd
+    = (TunnelExtensionFlag|TunnelDataCmd);
+const u_int8_t TunnelJoinGroupAuxCmd
+    = (TunnelExtensionFlag|TunnelJoinGroupCmd);
+const u_int8_t TunnelLeaveGroupAuxCmd
+    = (TunnelExtensionFlag|TunnelLeaveGroupCmd);
+// Note: the TearDown, Probe, ProbeAck, ProbeNack cmds have no Aux version
+// 0x84 through 0x87: currently unused.
+const u_int8_t TunnelJoinRTPGroupAuxCmd
+    = (TunnelExtensionFlag|TunnelJoinRTPGroupCmd);
+const u_int8_t TunnelLeaveRTPGroupAuxCmd
+    = (TunnelExtensionFlag|TunnelLeaveRTPGroupCmd);
+// 0x8A through 0xFF: currently unused
+
+inline Boolean TunnelIsAuxCmd(u_int8_t cmd) {
+  return (cmd&TunnelExtensionFlag) != 0;
+}
+
+#endif
diff --git a/groupsock/include/groupsock_version.hh b/groupsock/include/groupsock_version.hh
new file mode 100644
index 0000000..a80445e
--- /dev/null
+++ b/groupsock/include/groupsock_version.hh
@@ -0,0 +1,10 @@
+// Version information for the "groupsock" library
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+
+#ifndef _GROUPSOCK_VERSION_HH
+#define _GROUPSOCK_VERSION_HH
+
+#define GROUPSOCK_LIBRARY_VERSION_STRING	"2020.03.06"
+#define GROUPSOCK_LIBRARY_VERSION_INT		1583452800
+
+#endif
diff --git a/groupsock/inet.c b/groupsock/inet.c
new file mode 100644
index 0000000..2050347
--- /dev/null
+++ b/groupsock/inet.c
@@ -0,0 +1,451 @@
+#ifndef _NET_COMMON_H
+#include "NetCommon.h"
+#endif
+
+#include <stdio.h>
+
+#ifdef VXWORKS
+#include <inetLib.h>
+#endif
+
+/* Some systems (e.g., SunOS) have header files that erroneously declare inet_addr() as taking no arguments.
+ * This confuses C++.  To overcome this, we use our own routine, implemented in C.
+ */
+
+unsigned our_inet_addr(cp)
+	char const* cp;
+{
+	return inet_addr(cp);
+}
+
+#if defined(__WIN32__) || defined(_WIN32)
+#ifndef IMN_PIM
+#define WS_VERSION_CHOICE1 0x202/*MAKEWORD(2,2)*/
+#define WS_VERSION_CHOICE2 0x101/*MAKEWORD(1,1)*/
+int initializeWinsockIfNecessary(void) {
+	/* We need to call an initialization routine before
+	 * we can do anything with winsock.  (How fucking lame!):
+	 */
+	static int _haveInitializedWinsock = 0;
+	WSADATA	wsadata;
+
+	if (!_haveInitializedWinsock) {
+		if ((WSAStartup(WS_VERSION_CHOICE1, &wsadata) != 0)
+		    && ((WSAStartup(WS_VERSION_CHOICE2, &wsadata)) != 0)) {
+			return 0; /* error in initialization */
+		}
+	    	if ((wsadata.wVersion != WS_VERSION_CHOICE1)
+	    	    && (wsadata.wVersion != WS_VERSION_CHOICE2)) {
+	        	WSACleanup();
+				return 0; /* desired Winsock version was not available */
+		}
+		_haveInitializedWinsock = 1;
+	}
+
+	return 1;
+}
+#else
+int initializeWinsockIfNecessary(void) { return 1; }
+#endif
+#else
+#define initializeWinsockIfNecessary() 1
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#ifdef USE_SYSTEM_RANDOM
+/* Use the system-supplied "random()" and "srandom()" functions */
+#include <stdlib.h>
+long our_random() {
+#if defined(__WIN32__) || defined(_WIN32)
+  return rand();
+#else
+  return random();
+#endif
+}
+void our_srandom(unsigned int x) {
+#if defined(__WIN32__) || defined(_WIN32)
+  srand(x);
+#else
+  srandom(x);
+#endif
+}
+
+#else
+
+/* Use our own implementation of the "random()" and "srandom()" functions */
+/*
+ * random.c:
+ *
+ * An improved random number generation package.  In addition to the standard
+ * rand()/srand() like interface, this package also has a special state info
+ * interface.  The our_initstate() routine is called with a seed, an array of
+ * bytes, and a count of how many bytes are being passed in; this array is
+ * then initialized to contain information for random number generation with
+ * that much state information.  Good sizes for the amount of state
+ * information are 32, 64, 128, and 256 bytes.  The state can be switched by
+ * calling the our_setstate() routine with the same array as was initiallized
+ * with our_initstate().  By default, the package runs with 128 bytes of state
+ * information and generates far better random numbers than a linear
+ * congruential generator.  If the amount of state information is less than
+ * 32 bytes, a simple linear congruential R.N.G. is used.
+ *
+ * Internally, the state information is treated as an array of longs; the
+ * zeroeth element of the array is the type of R.N.G. being used (small
+ * integer); the remainder of the array is the state information for the
+ * R.N.G.  Thus, 32 bytes of state information will give 7 longs worth of
+ * state information, which will allow a degree seven polynomial.  (Note:
+ * the zeroeth word of state information also has some other information
+ * stored in it -- see our_setstate() for details).
+ *
+ * The random number generation technique is a linear feedback shift register
+ * approach, employing trinomials (since there are fewer terms to sum up that
+ * way).  In this approach, the least significant bit of all the numbers in
+ * the state table will act as a linear feedback shift register, and will
+ * have period 2^deg - 1 (where deg is the degree of the polynomial being
+ * used, assuming that the polynomial is irreducible and primitive).  The
+ * higher order bits will have longer periods, since their values are also
+ * influenced by pseudo-random carries out of the lower bits.  The total
+ * period of the generator is approximately deg*(2**deg - 1); thus doubling
+ * the amount of state information has a vast influence on the period of the
+ * generator.  Note: the deg*(2**deg - 1) is an approximation only good for
+ * large deg, when the period of the shift register is the dominant factor.
+ * With deg equal to seven, the period is actually much longer than the
+ * 7*(2**7 - 1) predicted by this formula.
+ */
+
+/*
+ * For each of the currently supported random number generators, we have a
+ * break value on the amount of state information (you need at least this
+ * many bytes of state info to support this random number generator), a degree
+ * for the polynomial (actually a trinomial) that the R.N.G. is based on, and
+ * the separation between the two lower order coefficients of the trinomial.
+ */
+#define	TYPE_0		0		/* linear congruential */
+#define	BREAK_0		8
+#define	DEG_0		0
+#define	SEP_0		0
+
+#define	TYPE_1		1		/* x**7 + x**3 + 1 */
+#define	BREAK_1		32
+#define	DEG_1		7
+#define	SEP_1		3
+
+#define	TYPE_2		2		/* x**15 + x + 1 */
+#define	BREAK_2		64
+#define	DEG_2		15
+#define	SEP_2		1
+
+#define	TYPE_3		3		/* x**31 + x**3 + 1 */
+#define	BREAK_3		128
+#define	DEG_3		31
+#define	SEP_3		3
+
+#define	TYPE_4		4		/* x**63 + x + 1 */
+#define	BREAK_4		256
+#define	DEG_4		63
+#define	SEP_4		1
+
+/*
+ * Array versions of the above information to make code run faster --
+ * relies on fact that TYPE_i == i.
+ */
+#define	MAX_TYPES	5		/* max number of types above */
+
+static int const degrees[MAX_TYPES] = { DEG_0, DEG_1, DEG_2, DEG_3, DEG_4 };
+static int const seps [MAX_TYPES] = { SEP_0, SEP_1, SEP_2, SEP_3, SEP_4 };
+
+/*
+ * Initially, everything is set up as if from:
+ *
+ *	our_initstate(1, &randtbl, 128);
+ *
+ * Note that this initialization takes advantage of the fact that srandom()
+ * advances the front and rear pointers 10*rand_deg times, and hence the
+ * rear pointer which starts at 0 will also end up at zero; thus the zeroeth
+ * element of the state information, which contains info about the current
+ * position of the rear pointer is just
+ *
+ *	MAX_TYPES * (rptr - state) + TYPE_3 == TYPE_3.
+ */
+
+static long randtbl[DEG_3 + 1] = {
+	TYPE_3,
+	0x9a319039, 0x32d9c024, 0x9b663182, 0x5da1f342, 0xde3b81e0, 0xdf0a6fb5,
+	0xf103bc02, 0x48f340fb, 0x7449e56b, 0xbeb1dbb0, 0xab5c5918, 0x946554fd,
+	0x8c2e680f, 0xeb3d799f, 0xb11ee0b7, 0x2d436b86, 0xda672e2a, 0x1588ca88,
+	0xe369735d, 0x904f35f7, 0xd7158fd6, 0x6fa6f051, 0x616e6b96, 0xac94efdc,
+	0x36413f93, 0xc622c298, 0xf5a42ab8, 0x8a88d77b, 0xf5ad9d0e, 0x8999220b,
+	0x27fb47b9,
+};
+
+/*
+ * fptr and rptr are two pointers into the state info, a front and a rear
+ * pointer.  These two pointers are always rand_sep places aparts, as they
+ * cycle cyclically through the state information.  (Yes, this does mean we
+ * could get away with just one pointer, but the code for random() is more
+ * efficient this way).  The pointers are left positioned as they would be
+ * from the call
+ *
+ *	our_initstate(1, randtbl, 128);
+ *
+ * (The position of the rear pointer, rptr, is really 0 (as explained above
+ * in the initialization of randtbl) because the state table pointer is set
+ * to point to randtbl[1] (as explained below).
+ */
+static long* fptr = &randtbl[SEP_3 + 1];
+static long* rptr = &randtbl[1];
+
+/*
+ * The following things are the pointer to the state information table, the
+ * type of the current generator, the degree of the current polynomial being
+ * used, and the separation between the two pointers.  Note that for efficiency
+ * of random(), we remember the first location of the state information, not
+ * the zeroeth.  Hence it is valid to access state[-1], which is used to
+ * store the type of the R.N.G.  Also, we remember the last location, since
+ * this is more efficient than indexing every time to find the address of
+ * the last element to see if the front and rear pointers have wrapped.
+ */
+static long *state = &randtbl[1];
+static int rand_type = TYPE_3;
+static int rand_deg = DEG_3;
+static int rand_sep = SEP_3;
+static long* end_ptr = &randtbl[DEG_3 + 1];
+
+/*
+ * srandom:
+ *
+ * Initialize the random number generator based on the given seed.  If the
+ * type is the trivial no-state-information type, just remember the seed.
+ * Otherwise, initializes state[] based on the given "seed" via a linear
+ * congruential generator.  Then, the pointers are set to known locations
+ * that are exactly rand_sep places apart.  Lastly, it cycles the state
+ * information a given number of times to get rid of any initial dependencies
+ * introduced by the L.C.R.N.G.  Note that the initialization of randtbl[]
+ * for default usage relies on values produced by this routine.
+ */
+long our_random(void); /*forward*/
+void
+our_srandom(unsigned int x)
+{
+	register int i;
+
+	if (rand_type == TYPE_0)
+		state[0] = x;
+	else {
+		state[0] = x;
+		for (i = 1; i < rand_deg; i++)
+			state[i] = 1103515245 * state[i - 1] + 12345;
+		fptr = &state[rand_sep];
+		rptr = &state[0];
+		for (i = 0; i < 10 * rand_deg; i++)
+			(void)our_random();
+	}
+}
+
+/*
+ * our_initstate:
+ *
+ * Initialize the state information in the given array of n bytes for future
+ * random number generation.  Based on the number of bytes we are given, and
+ * the break values for the different R.N.G.'s, we choose the best (largest)
+ * one we can and set things up for it.  srandom() is then called to
+ * initialize the state information.
+ *
+ * Note that on return from srandom(), we set state[-1] to be the type
+ * multiplexed with the current value of the rear pointer; this is so
+ * successive calls to our_initstate() won't lose this information and will be
+ * able to restart with our_setstate().
+ *
+ * Note: the first thing we do is save the current state, if any, just like
+ * our_setstate() so that it doesn't matter when our_initstate is called.
+ *
+ * Returns a pointer to the old state.
+ */
+char *
+our_initstate(seed, arg_state, n)
+	unsigned int seed;		/* seed for R.N.G. */
+	char *arg_state;		/* pointer to state array */
+	int n;				/* # bytes of state info */
+{
+	register char *ostate = (char *)(&state[-1]);
+
+	if (rand_type == TYPE_0)
+		state[-1] = rand_type;
+	else
+		state[-1] = MAX_TYPES * (rptr - state) + rand_type;
+	if (n < BREAK_0) {
+#ifdef DEBUG
+		(void)fprintf(stderr,
+		    "random: not enough state (%d bytes); ignored.\n", n);
+#endif
+		return(0);
+	}
+	if (n < BREAK_1) {
+		rand_type = TYPE_0;
+		rand_deg = DEG_0;
+		rand_sep = SEP_0;
+	} else if (n < BREAK_2) {
+		rand_type = TYPE_1;
+		rand_deg = DEG_1;
+		rand_sep = SEP_1;
+	} else if (n < BREAK_3) {
+		rand_type = TYPE_2;
+		rand_deg = DEG_2;
+		rand_sep = SEP_2;
+	} else if (n < BREAK_4) {
+		rand_type = TYPE_3;
+		rand_deg = DEG_3;
+		rand_sep = SEP_3;
+	} else {
+		rand_type = TYPE_4;
+		rand_deg = DEG_4;
+		rand_sep = SEP_4;
+	}
+	state = &(((long *)arg_state)[1]);	/* first location */
+	end_ptr = &state[rand_deg];	/* must set end_ptr before srandom */
+	our_srandom(seed);
+	if (rand_type == TYPE_0)
+		state[-1] = rand_type;
+	else
+		state[-1] = MAX_TYPES*(rptr - state) + rand_type;
+	return(ostate);
+}
+
+/*
+ * our_setstate:
+ *
+ * Restore the state from the given state array.
+ *
+ * Note: it is important that we also remember the locations of the pointers
+ * in the current state information, and restore the locations of the pointers
+ * from the old state information.  This is done by multiplexing the pointer
+ * location into the zeroeth word of the state information.
+ *
+ * Note that due to the order in which things are done, it is OK to call
+ * our_setstate() with the same state as the current state.
+ *
+ * Returns a pointer to the old state information.
+ */
+char *
+our_setstate(arg_state)
+	char *arg_state;
+{
+	register long *new_state = (long *)arg_state;
+	register int type = new_state[0] % MAX_TYPES;
+	register int rear = new_state[0] / MAX_TYPES;
+	char *ostate = (char *)(&state[-1]);
+
+	if (rand_type == TYPE_0)
+		state[-1] = rand_type;
+	else
+		state[-1] = MAX_TYPES * (rptr - state) + rand_type;
+	switch(type) {
+	case TYPE_0:
+	case TYPE_1:
+	case TYPE_2:
+	case TYPE_3:
+	case TYPE_4:
+		rand_type = type;
+		rand_deg = degrees[type];
+		rand_sep = seps[type];
+		break;
+	default:
+#ifdef DEBUG
+		(void)fprintf(stderr,
+		    "random: state info corrupted; not changed.\n");
+#endif
+		break;
+	}
+	state = &new_state[1];
+	if (rand_type != TYPE_0) {
+		rptr = &state[rear];
+		fptr = &state[(rear + rand_sep) % rand_deg];
+	}
+	end_ptr = &state[rand_deg];		/* set end_ptr too */
+	return(ostate);
+}
+
+/*
+ * random:
+ *
+ * If we are using the trivial TYPE_0 R.N.G., just do the old linear
+ * congruential bit.  Otherwise, we do our fancy trinomial stuff, which is
+ * the same in all the other cases due to all the global variables that have
+ * been set up.  The basic operation is to add the number at the rear pointer
+ * into the one at the front pointer.  Then both pointers are advanced to
+ * the next location cyclically in the table.  The value returned is the sum
+ * generated, reduced to 31 bits by throwing away the "least random" low bit.
+ *
+ * Note: the code takes advantage of the fact that both the front and
+ * rear pointers can't wrap on the same call by not testing the rear
+ * pointer if the front one has wrapped.
+ *
+ * Returns a 31-bit random number.
+ */
+long our_random() {
+  long i;
+
+  if (rand_type == TYPE_0) {
+    i = state[0] = (state[0] * 1103515245 + 12345) & 0x7fffffff;
+  } else {
+    /* Make copies of "rptr" and "fptr" before working with them, in case we're being called concurrently by multiple threads: */
+    long* rp = rptr;
+    long* fp = fptr;
+
+    /* Make sure "rp" and "fp" are separated by the correct distance (again, allowing for concurrent access): */
+    if (!(fp == rp+SEP_3 || fp+DEG_3 == rp+SEP_3)) {
+      /* A rare case that should occur only if we're being called concurrently by multiple threads. */
+      /* Restore the proper separation between the pointers: */
+      if (rp <= fp) rp = fp-SEP_3; else rp = fp+DEG_3-SEP_3;
+    }
+
+    *fp += *rp;
+    i = (*fp >> 1) & 0x7fffffff;	/* chucking least random bit */
+    if (++fp >= end_ptr) {
+      fp = state;
+      ++rp;
+    } else if (++rp >= end_ptr) {
+      rp = state;
+    }
+
+    /* Restore "rptr" and "fptr" from our working copies: */
+    rptr = rp;
+    fptr = fp;
+  }
+
+  return i;
+}
+#endif
+
+u_int32_t our_random32() {
+  /* Return a 32-bit random number.
+     Because "our_random()" returns a 31-bit random number, we call it a second
+     time, to generate the high bit.
+     (Actually, to increase the likelihood of randomness, we take the middle 16 bits of two successive calls to "our_random()")
+  */
+  long random_1 = our_random();
+  u_int32_t random16_1 = (u_int32_t)(random_1&0x00FFFF00);
+
+  long random_2 = our_random();
+  u_int32_t random16_2 = (u_int32_t)(random_2&0x00FFFF00);
+
+  return (random16_1<<8) | (random16_2>>8);
+}
+
+#ifdef USE_OUR_BZERO
+#ifndef __bzero
+void
+__bzero (to, count)
+  char *to;
+  int count;
+{
+  while (count-- > 0)
+    {
+      *to++ = 0;
+    }
+}             
+#endif
+#endif
diff --git a/hlsProxy/COPYING b/hlsProxy/COPYING
new file mode 120000
index 0000000..012065c
--- /dev/null
+++ b/hlsProxy/COPYING
@@ -0,0 +1 @@
+../COPYING
\ No newline at end of file
diff --git a/hlsProxy/COPYING.LESSER b/hlsProxy/COPYING.LESSER
new file mode 120000
index 0000000..ce9a3ce
--- /dev/null
+++ b/hlsProxy/COPYING.LESSER
@@ -0,0 +1 @@
+../COPYING.LESSER
\ No newline at end of file
diff --git a/hlsProxy/Makefile.head b/hlsProxy/Makefile.head
new file mode 100644
index 0000000..e81e1ba
--- /dev/null
+++ b/hlsProxy/Makefile.head
@@ -0,0 +1,7 @@
+INCLUDES = -I../UsageEnvironment/include -I../groupsock/include -I../liveMedia/include -I../BasicUsageEnvironment/include
+# Default library filename suffixes for each library that we link with.  The "config.*" file might redefine these later.
+libliveMedia_LIB_SUFFIX = $(LIB_SUFFIX)
+libBasicUsageEnvironment_LIB_SUFFIX = $(LIB_SUFFIX)
+libUsageEnvironment_LIB_SUFFIX = $(LIB_SUFFIX)
+libgroupsock_LIB_SUFFIX = $(LIB_SUFFIX)
+##### Change the following for your environment:
diff --git a/hlsProxy/Makefile.tail b/hlsProxy/Makefile.tail
new file mode 100644
index 0000000..51f4701
--- /dev/null
+++ b/hlsProxy/Makefile.tail
@@ -0,0 +1,38 @@
+##### End of variables to change
+
+HLS_PROXY = live555HLSProxy$(EXE)
+
+PREFIX = /usr/local
+ALL = $(HLS_PROXY)
+all: $(ALL)
+
+.$(C).$(OBJ):
+	$(C_COMPILER) -c $(C_FLAGS) $<
+.$(CPP).$(OBJ):
+	$(CPLUSPLUS_COMPILER) -c $(CPLUSPLUS_FLAGS) $<
+
+HLS_PROXY_OBJS = live555HLSProxy.$(OBJ)
+
+USAGE_ENVIRONMENT_DIR = ../UsageEnvironment
+USAGE_ENVIRONMENT_LIB = $(USAGE_ENVIRONMENT_DIR)/libUsageEnvironment.$(libUsageEnvironment_LIB_SUFFIX)
+BASIC_USAGE_ENVIRONMENT_DIR = ../BasicUsageEnvironment
+BASIC_USAGE_ENVIRONMENT_LIB = $(BASIC_USAGE_ENVIRONMENT_DIR)/libBasicUsageEnvironment.$(libBasicUsageEnvironment_LIB_SUFFIX)
+LIVEMEDIA_DIR = ../liveMedia
+LIVEMEDIA_LIB = $(LIVEMEDIA_DIR)/libliveMedia.$(libliveMedia_LIB_SUFFIX)
+GROUPSOCK_DIR = ../groupsock
+GROUPSOCK_LIB = $(GROUPSOCK_DIR)/libgroupsock.$(libgroupsock_LIB_SUFFIX)
+LOCAL_LIBS =	$(LIVEMEDIA_LIB) $(GROUPSOCK_LIB) \
+		$(BASIC_USAGE_ENVIRONMENT_LIB) $(USAGE_ENVIRONMENT_LIB)
+LIBS =			$(LOCAL_LIBS) $(LIBS_FOR_CONSOLE_APPLICATION)
+
+live555HLSProxy$(EXE):	$(HLS_PROXY_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(HLS_PROXY_OBJS) $(LIBS)
+
+clean:
+	-rm -rf *.$(OBJ) $(ALL) core *.core *~ include/*~
+
+install: $(HLS_PROXY)
+	  install -d $(DESTDIR)$(PREFIX)/bin
+	  install -m 755 $(HLS_PROXY) $(DESTDIR)$(PREFIX)/bin
+
+##### Any additional, platform-specific rules come here:
diff --git a/hlsProxy/live555HLSProxy.cpp b/hlsProxy/live555HLSProxy.cpp
new file mode 100644
index 0000000..cc23409
--- /dev/null
+++ b/hlsProxy/live555HLSProxy.cpp
@@ -0,0 +1,439 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A program that acts as a proxy for a RTSP stream, converting it into a sequence of
+// HLS (HTTP Live Streaming) segments, plus a ".m3u8" file that can be accessed via a web browser.
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+
+#define RTSP_CLIENT_VERBOSITY_LEVEL 0 // set to 1 for more verbose output from the "RTSPClient"
+#define OUR_HLS_SEGMENTATION_DURATION 6 /*seconds*/
+#define OUR_HLS_REWIND_DURATION 60 /*seconds: How far back in time a browser can seek*/
+
+UsageEnvironment* env;
+char const* programName;
+char* username = NULL;
+char* password = NULL;
+Authenticator* ourAuthenticator = NULL;
+Boolean streamUsingTCP = False;
+portNumBits tunnelOverHTTPPortNum = 0;
+char const* hlsPrefix;
+MediaSession* session;
+MediaSubsession* subsession;
+double duration = 0.0;
+Boolean createHandlerServerForREGISTERCommand = False;
+portNumBits handlerServerForREGISTERCommandPortNum = 0;
+HandlerServerForREGISTERCommand* handlerServerForREGISTERCommand;
+char* usernameForREGISTER = NULL;
+char* passwordForREGISTER = NULL;
+UserAuthenticationDatabase* authDBForREGISTER = NULL;
+
+void usage() {
+  *env << "usage:\t" << programName << " [-u <username> <password>] [-t|-T <http-port>] <input-RTSP-url> <HLS-prefix>\n";
+  *env << "   or:\t" << programName << " -R [<port-num>] [-U <username-for-REGISTER> <password-for-REGISTER>] <HLS-prefix>\n";
+  exit(1);
+}
+
+// Forward function definitions:
+void continueAfterClientCreation0(RTSPClient* rtspClient, Boolean requestStreamingOverTCP);
+void continueAfterClientCreation1(RTSPClient* rtspClient);
+void continueAfterDESCRIBE(RTSPClient* rtspClient, int resultCode, char* resultString);
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Parse the command line:
+  programName = argv[0];
+  while (argc > 1) {
+    char* const opt = argv[1];
+    if (opt[0] != '-') {
+      if (argc <= 3) break; // only the URL + prefix is left
+      usage();
+    }
+
+    switch (opt[1]) {
+      case 'u': { // specify a username and password
+	if (argc < 4) usage(); // there's no argv[3] (for the "password")
+	username = argv[2];
+	password = argv[3];
+	argv+=2; argc-=2;
+	ourAuthenticator = new Authenticator(username, password);
+	break;
+      }
+
+      case 't': { // stream RTP and RTCP over the TCP 'control' connection
+	streamUsingTCP = True;
+	break;
+      }
+
+      case 'T': {
+	if (argc > 3 && argv[2][0] != '-') {
+	  // The next argument is the HTTP server port number:
+	  if (sscanf(argv[2], "%hu", &tunnelOverHTTPPortNum) == 1
+	      && tunnelOverHTTPPortNum > 0) {
+	    ++argv; --argc;
+	    break;
+	  }
+	}
+
+	// If we get here, the option was specified incorrectly:
+	usage();
+	break;
+      }
+
+      case 'R': {
+	// set up a handler server for incoming "REGISTER" commands
+	createHandlerServerForREGISTERCommand = True;
+	if (argc > 2 && argv[2][0] != '-') {
+	  // The next argument is the REGISTER handler server port number:
+	  if (sscanf(argv[2], "%hu", &handlerServerForREGISTERCommandPortNum) == 1 && handlerServerForREGISTERCommandPortNum > 0) {
+	    ++argv; --argc;
+	    break;
+	  }
+	}
+	break;
+      }
+
+      case 'U': { // specify a username and password to be used to authentication an incoming "REGISTER" command (for use with -R)
+	if (argc < 4) usage(); // there's no argv[3] (for the "password")
+	usernameForREGISTER = argv[2];	
+	passwordForREGISTER = argv[3];
+	argv+=2; argc-=2;
+
+	if (authDBForREGISTER == NULL) authDBForREGISTER = new UserAuthenticationDatabase;
+	authDBForREGISTER->addUserRecord(usernameForREGISTER, passwordForREGISTER);
+	break;
+      }
+
+      default: {
+	*env << "Invalid option: " << opt << "\n";
+	usage();
+	break;
+      }
+    }
+
+    ++argv; --argc;
+  }
+	  
+  // Create (or arrange to create) our RTSP client object:
+  if (createHandlerServerForREGISTERCommand) {
+    if (argc != 2) usage();
+    hlsPrefix = argv[1];
+
+    handlerServerForREGISTERCommand
+      = HandlerServerForREGISTERCommand::createNew(*env, continueAfterClientCreation0,
+						   handlerServerForREGISTERCommandPortNum, authDBForREGISTER,
+						   RTSP_CLIENT_VERBOSITY_LEVEL, programName);
+    if (handlerServerForREGISTERCommand == NULL) {
+      *env << "Failed to create a server for handling incoming \"REGISTER\" commands: " << env->getResultMsg() << "\n";
+      exit(1);
+    } else {
+      *env << "Awaiting an incoming \"REGISTER\" command on port " << handlerServerForREGISTERCommand->serverPortNum() << "\n";
+    }
+  } else { // Normal case
+    if (argc != 3) usage();
+    if (usernameForREGISTER != NULL) {
+      *env << "The '-U <username-for-REGISTER> <password-for-REGISTER>' option can be used only with -R\n";
+      usage();
+    }
+    char const* rtspURL = argv[1];
+    hlsPrefix = argv[2];
+
+    RTSPClient* rtspClient
+      = RTSPClient::createNew(*env, rtspURL, RTSP_CLIENT_VERBOSITY_LEVEL, programName, tunnelOverHTTPPortNum);
+    if (rtspClient == NULL) {
+      *env << "Failed to create a RTSP client for URL \"" << rtspURL << "\": " << env->getResultMsg() << "\n";
+      exit(1);
+    }
+
+    continueAfterClientCreation1(rtspClient);
+  }
+
+  // All further processing will be done from within the event loop:
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void continueAfterClientCreation0(RTSPClient* newRTSPClient, Boolean requestStreamingOverTCP) {
+  if (newRTSPClient == NULL) return;
+
+  streamUsingTCP = requestStreamingOverTCP;
+
+  // Having handled one "REGISTER" command (giving us a "rtsp://" URL to stream from), we don't handle any more:
+  Medium::close(handlerServerForREGISTERCommand); handlerServerForREGISTERCommand = NULL;
+
+  continueAfterClientCreation1(newRTSPClient);
+}
+
+void continueAfterClientCreation1(RTSPClient* rtspClient) {
+  // Having created a "RTSPClient" object, send a RTSP "DESCRIBE" command for the URL:
+  rtspClient->sendDescribeCommand(continueAfterDESCRIBE, ourAuthenticator);
+}
+
+// A function that outputs a string that identifies each stream (for debugging output).
+UsageEnvironment& operator<<(UsageEnvironment& env, const RTSPClient& rtspClient) {
+  return env << "[URL:\"" << rtspClient.url() << "\"]: ";
+}
+
+// A function that outputs a string that identifies each subsession (for debugging output).
+UsageEnvironment& operator<<(UsageEnvironment& env, const MediaSubsession& subsession) {
+  return env << subsession.mediumName() << "/" << subsession.codecName();
+}
+
+void continueAfterSETUP(RTSPClient* rtspClient, int resultCode, char* resultString); // forward
+
+void continueAfterDESCRIBE(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  do {
+    if (resultCode != 0) {
+      *env << *rtspClient << "Failed to get a SDP description: " << resultString << "\n";
+      delete[] resultString;
+      break;
+    }
+
+    // Create a media session object from the SDP description.
+    // Then iterate over it, to look for subsession(s) that we can handle:
+    session = MediaSession::createNew(*env, resultString);
+    delete[] resultString;
+    if (session == NULL) {
+      *env << *rtspClient << "Failed to create a MediaSession object from the SDP description: " << env->getResultMsg() << "\n";
+      break;
+    } else if (!session->hasSubsessions()) {
+      *env << *rtspClient << "This session has no media subsessions (i.e., no \"m=\" lines)\n";
+      break;
+    }
+    
+    MediaSubsessionIterator* iter = new MediaSubsessionIterator(*session);
+    while ((subsession = iter->next()) != NULL) {
+      if (strcmp(subsession->mediumName(), "video") == 0 &&
+	  strcmp(subsession->codecName(), "H264") == 0) break; // use this subsession
+    }
+    delete iter;
+
+    if (subsession == NULL) {
+      *env << *rtspClient << "This stream has no usable subsessions\n";
+      break;
+    }
+
+    if (!subsession->initiate()) {
+      *env << *rtspClient << "Failed to initiate the \"" << *subsession << "\" subsession: " << env->getResultMsg() << "\n";
+      break;
+    } else {
+      *env << *rtspClient << "Initiated the \"" << *subsession << "\" subsession\n";
+    }
+    
+    // Continue setting up this subsession, by sending a RTSP "SETUP" command:
+    rtspClient->sendSetupCommand(*subsession, continueAfterSETUP, False, streamUsingTCP,
+				 False, ourAuthenticator);
+    return;
+  } while (0);
+
+  // An error occurred:
+  exit(1);
+}
+
+void segmentationCallback(void* clientData, char const* segmentFileName, double segmentDuration); // forward
+void afterPlaying(void* clientData); // forward
+void continueAfterPLAY(RTSPClient* rtspClient, int resultCode, char* resultString); // forward
+
+void continueAfterSETUP(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  do {
+    if (resultCode != 0) {
+      *env << *rtspClient << "Failed to set up the \"" << *subsession << "\" subsession: " << resultString << "\n";
+      break;
+    }
+    delete[] resultString;
+
+    *env << *rtspClient << "Set up the \"" << *subsession << "\" subsession\n";
+
+    // Having successfully setup the subsession, create a data sink for it, and call "startPlaying()" on it.
+    // (This will prepare the data sink to receive data; the actual flow of data from the client won't start happening until later,
+    // after we've sent a RTSP "PLAY" command.)
+
+    subsession->sink 
+      = HLSSegmenter::createNew(*env, OUR_HLS_SEGMENTATION_DURATION, hlsPrefix, segmentationCallback);
+
+    // Create a 'framer' filter for the input source, to put the stream of NAL units into a
+    // form that's usable in output Transport Streams.
+    // (Note that we use a *DiscreteFramer*, because the input source is a stream of discrete
+    //  NAL units - i.e., one at a time.)
+    H264VideoStreamDiscreteFramer* framer
+      = H264VideoStreamDiscreteFramer::createNew(*env, subsession->readSource(),
+						 True/*includeStartCodeInOutput*/,
+						 True/*insertAccessUnitDelimiters*/);
+
+    // Then create a filter that packs the H.264 video data into a Transport Stream:
+    MPEG2TransportStreamFromESSource* tsFrames = MPEG2TransportStreamFromESSource::createNew(*env);
+    tsFrames->addNewVideoSource(framer, 5/*mpegVersion: H.264*/);
+
+    // Start playing the sink object:
+    *env << "Beginning to read...\n";
+    subsession->sink->startPlaying(*tsFrames, afterPlaying, NULL);
+
+    // Also set up BYE handler//#####@@@@@
+
+    // Finally, send a RTSP "PLAY" command to tell the server to start streaming:
+    if (session->absStartTime() != NULL) {
+      // Special case: The stream is indexed by 'absolute' time, so send an appropriate "PLAY" command:
+      rtspClient->sendPlayCommand(*session, continueAfterPLAY, session->absStartTime(), session->absEndTime(), 1.0f, ourAuthenticator);
+    } else {
+      duration = session->playEndTime() - session->playStartTime();
+      rtspClient->sendPlayCommand(*session, continueAfterPLAY, 0.0f, -1.0f, 1.0f, ourAuthenticator);
+    }
+      
+    return;
+  } while (0);
+
+  // An error occurred:
+  exit(1);
+}
+
+// A record that defines a segment that has been written.  These records are kept in a list:
+class SegmentRecord {
+public:
+  SegmentRecord(char const* segmentFileName, double segmentDuration)
+    : fNext(NULL), fSegmentFileName(strDup(segmentFileName)), fSegmentDuration(segmentDuration) {
+  }
+  virtual ~SegmentRecord() {
+    delete[] fSegmentFileName;
+    delete fNext;
+  }
+
+  SegmentRecord*& next() { return fNext; }
+  char const* fileName() const { return fSegmentFileName; }
+  double duration() const { return fSegmentDuration; }
+
+private:
+  SegmentRecord* fNext;
+  char* fSegmentFileName;
+  double fSegmentDuration;
+};
+
+SegmentRecord* head = NULL;
+SegmentRecord* tail = NULL;
+double totalDuration = 0.0;
+char* ourM3U8FileName = NULL;
+
+void segmentationCallback(void* /*clientData*/,
+			  char const* segmentFileName, double segmentDuration) {
+  // Begin by updating our list of segments:
+  SegmentRecord* newSegment = new SegmentRecord(segmentFileName, segmentDuration);
+  if (tail != NULL) {
+    tail->next() = newSegment;
+  } else {
+    head = newSegment;
+  }
+  tail = newSegment;
+  totalDuration += segmentDuration;
+
+  fprintf(stderr, "Wrote segment \"%s\" (duration: %f seconds) -> %f seconds of data stored\n",
+	  segmentFileName, segmentDuration, totalDuration);
+  
+  static unsigned firstSegmentCounter = 1;
+  while (totalDuration > OUR_HLS_REWIND_DURATION) {
+    // Remove segments from the head of the list:
+    SegmentRecord* segmentToRemove = head;
+    if (segmentToRemove == NULL) exit(1); // should not happen
+
+    head = segmentToRemove->next();
+    if (tail == segmentToRemove) { // should not happen
+      tail = NULL;
+    }
+    segmentToRemove->next() = NULL;
+
+    totalDuration -= segmentToRemove->duration();
+    fprintf(stderr, "\tDeleting segment \"%s\" (duration: %f seconds) -> %f seconds of data stored\n",
+	    segmentToRemove->fileName(), segmentToRemove->duration(), totalDuration);
+    if (unlink(segmentToRemove->fileName()) != 0) {
+      *env << "\t\tunlink(\"" << segmentToRemove->fileName() << "\") failed: " << env->getResultMsg() << "\n";
+    }
+    delete segmentToRemove;
+    ++firstSegmentCounter;
+  }
+
+  // Then, rewrite our ".h3u8" file with the new list of segments:
+  if (ourM3U8FileName == NULL) {
+    ourM3U8FileName = new char[strlen(hlsPrefix) + 5/*strlen(".m3u8")*/ + 1];
+    if (ourM3U8FileName == NULL) exit(1);
+    sprintf(ourM3U8FileName, "%s.m3u8", hlsPrefix);
+  }
+
+  // Open our ".m3u8" file for output, and write the prefix:
+  FILE* ourM3U8Fid = fopen(ourM3U8FileName, "wb");
+  if (ourM3U8Fid == NULL) {
+    *env << "Failed to open file \"" << ourM3U8FileName << "\": " << env->getResultMsg();
+    exit(1);
+  }
+
+  fprintf(ourM3U8Fid,
+	  "#EXTM3U\n"
+	  "#EXT-X-VERSION:3\n"
+	  "#EXT-X-INDEPENDENT-SEGMENTS\n"
+	  "#EXT-X-TARGETDURATION:%u\n"
+	  "#EXT-X-MEDIA-SEQUENCE:%u\n",
+	  OUR_HLS_SEGMENTATION_DURATION,
+	  firstSegmentCounter);
+
+  // Write the list of segments:
+  for (SegmentRecord* segment = head; segment != NULL; segment = segment->next()) {
+    fprintf(ourM3U8Fid,
+	    "#EXTINF:%f,\n"
+	    "%s\n",
+	    segment->duration(),
+	    segment->fileName());
+  }
+
+  // Close our ".m3u8" file:
+  fclose(ourM3U8Fid);
+
+  static Boolean isFirstTime = True;
+  if (isFirstTime) {
+    fprintf(stderr, "Wrote index file \"%s\"; the stream can now be played from a URL pointing to this file.\007\n", ourM3U8FileName);
+    isFirstTime = False;
+  }
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...Done reading\n";
+  exit(0);
+}
+
+void continueAfterPLAY(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  do {
+    if (resultCode != 0) {
+      *env << *rtspClient << "Failed to start playing session: " << resultString << "\n";
+      break;
+    }
+    delete[] resultString;
+
+    // Set timer based on duration #####@@@@@
+
+    *env << *rtspClient << "Started playing session";
+    if (duration > 0) {
+      *env << " (for up to " << duration << " seconds)";
+    }
+    *env << "...\n";
+
+    return;
+  } while (0);
+
+  // An error occurred:
+  exit(1);
+}
diff --git a/liveMedia/0_2n55ezgp_0_9w6043oh-0_2n55ezgp_0_9w6043oh.mp4 b/liveMedia/0_2n55ezgp_0_9w6043oh-0_2n55ezgp_0_9w6043oh.mp4
new file mode 100644
index 0000000..b576361
--- /dev/null
+++ b/liveMedia/0_2n55ezgp_0_9w6043oh-0_2n55ezgp_0_9w6043oh.mp4
Binary files differ
diff --git a/liveMedia/AC3AudioFileServerMediaSubsession.cpp b/liveMedia/AC3AudioFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..b8c8b5a
--- /dev/null
+++ b/liveMedia/AC3AudioFileServerMediaSubsession.cpp
@@ -0,0 +1,61 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an AC3 audio file.
+// Implementation
+
+#include "AC3AudioFileServerMediaSubsession.hh"
+#include "ByteStreamFileSource.hh"
+#include "AC3AudioStreamFramer.hh"
+#include "AC3AudioRTPSink.hh"
+
+AC3AudioFileServerMediaSubsession*
+AC3AudioFileServerMediaSubsession::createNew(UsageEnvironment& env,
+					     char const* fileName,
+					     Boolean reuseFirstSource) {
+  return new AC3AudioFileServerMediaSubsession(env, fileName, reuseFirstSource);
+}
+
+AC3AudioFileServerMediaSubsession
+::AC3AudioFileServerMediaSubsession(UsageEnvironment& env,
+				    char const* fileName, Boolean reuseFirstSource)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource) {
+}
+
+AC3AudioFileServerMediaSubsession::~AC3AudioFileServerMediaSubsession() {
+}
+
+FramedSource* AC3AudioFileServerMediaSubsession
+::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  estBitrate = 48; // kbps, estimate
+
+  ByteStreamFileSource* fileSource = ByteStreamFileSource::createNew(envir(), fFileName);
+  if (fileSource == NULL) return NULL;
+
+  return AC3AudioStreamFramer::createNew(envir(), fileSource);
+}
+
+RTPSink* AC3AudioFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock,
+		   unsigned char rtpPayloadTypeIfDynamic,
+		   FramedSource* inputSource) {
+  AC3AudioStreamFramer* audioSource = (AC3AudioStreamFramer*)inputSource;
+  return AC3AudioRTPSink::createNew(envir(), rtpGroupsock,
+				    rtpPayloadTypeIfDynamic,
+				    audioSource->samplingRate());
+}
diff --git a/liveMedia/AC3AudioRTPSink.cpp b/liveMedia/AC3AudioRTPSink.cpp
new file mode 100644
index 0000000..ef4f041
--- /dev/null
+++ b/liveMedia/AC3AudioRTPSink.cpp
@@ -0,0 +1,97 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for AC3 audio
+// Implementation
+
+#include "AC3AudioRTPSink.hh"
+
+AC3AudioRTPSink::AC3AudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+				 u_int8_t rtpPayloadFormat,
+				 u_int32_t rtpTimestampFrequency)
+  : AudioRTPSink(env, RTPgs, rtpPayloadFormat,
+		       rtpTimestampFrequency, "AC3"),
+    fTotNumFragmentsUsed(0) {
+}
+
+AC3AudioRTPSink::~AC3AudioRTPSink() {
+}
+
+AC3AudioRTPSink*
+AC3AudioRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			   u_int8_t rtpPayloadFormat,
+			   u_int32_t rtpTimestampFrequency) {
+  return new AC3AudioRTPSink(env, RTPgs,
+			     rtpPayloadFormat, rtpTimestampFrequency);
+}
+
+Boolean AC3AudioRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+                                 unsigned /*numBytesInFrame*/) const {
+  // (For now) allow at most 1 frame in a single packet:
+  return False;
+}
+
+void AC3AudioRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* frameStart,
+			 unsigned numBytesInFrame,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  // Set the 2-byte "payload header", as defined in RFC 4184.
+  unsigned char headers[2];
+
+  Boolean isFragment = numRemainingBytes > 0 || fragmentationOffset > 0;
+  if (!isFragment) {
+    headers[0] = 0; // One or more complete frames
+    headers[1] = 1; // because we (for now) allow at most 1 frame per packet
+  } else {
+    if (fragmentationOffset > 0) {
+      headers[0] = 3; // Fragment of frame other than initial fragment
+    } else {
+      // An initial fragment of the frame
+      unsigned const totalFrameSize = fragmentationOffset + numBytesInFrame + numRemainingBytes;
+      unsigned const fiveEighthsPoint = totalFrameSize/2 + totalFrameSize/8;
+      headers[0] = numBytesInFrame >= fiveEighthsPoint ? 1 : 2;
+
+      // Because this outgoing packet will be full (because it's an initial fragment), we can compute how many total
+      // fragments (and thus packets) will make up the complete AC-3 frame:
+      fTotNumFragmentsUsed = (totalFrameSize + (numBytesInFrame-1))/numBytesInFrame;
+    }
+
+    headers[1] = fTotNumFragmentsUsed;
+  }
+
+  setSpecialHeaderBytes(headers, sizeof headers);
+
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit:
+    setMarkerBit();
+  }
+
+  // Important: Also call our base class's doSpecialFrameHandling(),
+  // to set the packet's timestamp:
+  MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
+					     frameStart, numBytesInFrame,
+					     framePresentationTime,
+					     numRemainingBytes);
+}
+
+unsigned AC3AudioRTPSink::specialHeaderSize() const {
+  return 2;
+}
diff --git a/liveMedia/AC3AudioRTPSource.cpp b/liveMedia/AC3AudioRTPSource.cpp
new file mode 100644
index 0000000..e5b12b0
--- /dev/null
+++ b/liveMedia/AC3AudioRTPSource.cpp
@@ -0,0 +1,66 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// AC3 Audio RTP Sources
+// Implementation
+
+#include "AC3AudioRTPSource.hh"
+
+AC3AudioRTPSource*
+AC3AudioRTPSource::createNew(UsageEnvironment& env,
+			      Groupsock* RTPgs,
+			      unsigned char rtpPayloadFormat,
+			      unsigned rtpTimestampFrequency) {
+  return new AC3AudioRTPSource(env, RTPgs, rtpPayloadFormat,
+				rtpTimestampFrequency);
+}
+
+AC3AudioRTPSource::AC3AudioRTPSource(UsageEnvironment& env,
+				       Groupsock* rtpGS,
+				       unsigned char rtpPayloadFormat,
+				       unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, rtpGS,
+			 rtpPayloadFormat, rtpTimestampFrequency) {
+}
+
+AC3AudioRTPSource::~AC3AudioRTPSource() {
+}
+
+Boolean AC3AudioRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  // There's a 2-byte payload header at the beginning:
+  if (packetSize < 2) return False;
+  resultSpecialHeaderSize = 2;
+
+  unsigned char FT = headerStart[0]&0x03;
+  fCurrentPacketBeginsFrame = FT != 3;
+
+  // The RTP "M" (marker) bit indicates the last fragment of a frame.
+  // In case the sender did not set the "M" bit correctly, we also test for FT == 0:
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit() || FT == 0;
+
+  return True;
+}
+
+char const* AC3AudioRTPSource::MIMEtype() const {
+  return "audio/AC3";
+}
+
diff --git a/liveMedia/AC3AudioStreamFramer.cpp b/liveMedia/AC3AudioStreamFramer.cpp
new file mode 100644
index 0000000..9ccd0ff
--- /dev/null
+++ b/liveMedia/AC3AudioStreamFramer.cpp
@@ -0,0 +1,340 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an AC3 audio elementary stream into frames
+// Implementation
+
+#include "AC3AudioStreamFramer.hh"
+#include "StreamParser.hh"
+#include <GroupsockHelper.hh>
+
+////////// AC3AudioStreamParser definition //////////
+
+class AC3FrameParams {
+public:
+  AC3FrameParams() : samplingFreq(0) {}
+  // 8-byte header at the start of each frame:
+  //  u_int32_t hdr0, hdr1;
+  unsigned hdr0, hdr1;
+
+  // parameters derived from the headers
+  unsigned kbps, samplingFreq, frameSize;
+
+  void setParamsFromHeader();
+};
+
+class AC3AudioStreamParser: public StreamParser {
+public:
+  AC3AudioStreamParser(AC3AudioStreamFramer* usingSource,
+			FramedSource* inputSource);
+  virtual ~AC3AudioStreamParser();
+
+public:
+  void testStreamCode(unsigned char ourStreamCode,
+		      unsigned char* ptr, unsigned size);
+  unsigned parseFrame(unsigned& numTruncatedBytes);
+     // returns the size of the frame that was acquired, or 0 if none was
+
+  void registerReadInterest(unsigned char* to, unsigned maxSize);
+
+  AC3FrameParams const& currentFrame() const { return fCurrentFrame; }
+
+  Boolean haveParsedAFrame() const { return fHaveParsedAFrame; }
+  void readAndSaveAFrame();
+
+private:
+  static void afterGettingSavedFrame(void* clientData, unsigned frameSize,
+				     unsigned numTruncatedBytes,
+                                     struct timeval presentationTime,
+				     unsigned durationInMicroseconds);
+  void afterGettingSavedFrame1(unsigned frameSize);
+  static void onSavedFrameClosure(void* clientData);
+  void onSavedFrameClosure1();
+
+private:
+  AC3AudioStreamFramer* fUsingSource;
+  unsigned char* fTo;
+  unsigned fMaxSize;
+
+  Boolean fHaveParsedAFrame;
+  unsigned char* fSavedFrame;
+  unsigned fSavedFrameSize;
+  char fSavedFrameFlag;
+
+  // Parameters of the most recently read frame:
+  AC3FrameParams fCurrentFrame;
+};
+
+
+////////// AC3AudioStreamFramer implementation //////////
+
+AC3AudioStreamFramer::AC3AudioStreamFramer(UsageEnvironment& env,
+					   FramedSource* inputSource,
+					   unsigned char streamCode)
+  : FramedFilter(env, inputSource), fOurStreamCode(streamCode) {
+  // Use the current wallclock time as the initial 'presentation time':
+  gettimeofday(&fNextFramePresentationTime, NULL);
+
+  fParser = new AC3AudioStreamParser(this, inputSource);
+}
+
+AC3AudioStreamFramer::~AC3AudioStreamFramer() {
+  delete fParser;
+}
+
+AC3AudioStreamFramer*
+AC3AudioStreamFramer::createNew(UsageEnvironment& env,
+				FramedSource* inputSource,
+				unsigned char streamCode) {
+  // Need to add source type checking here???  #####
+  return new AC3AudioStreamFramer(env, inputSource, streamCode);
+}
+
+unsigned AC3AudioStreamFramer::samplingRate() {
+  if (!fParser->haveParsedAFrame()) {
+    // Because we haven't yet parsed a frame, we don't yet know the input
+    // stream's sampling rate.  So, we first need to read a frame
+    // (into a special buffer that we keep around for later use).
+    fParser->readAndSaveAFrame();
+  }
+
+  return fParser->currentFrame().samplingFreq;
+}
+
+void AC3AudioStreamFramer::flushInput() {
+  fParser->flushInput();
+}
+
+void AC3AudioStreamFramer::doGetNextFrame() {
+  fParser->registerReadInterest(fTo, fMaxSize);
+  parseNextFrame();
+}
+
+#define MILLION 1000000
+
+struct timeval AC3AudioStreamFramer::currentFramePlayTime() const {
+  AC3FrameParams const& fr = fParser->currentFrame();
+  unsigned const numSamples = 1536;
+  unsigned const freq = fr.samplingFreq;
+
+  // result is numSamples/freq
+  unsigned const uSeconds = (freq == 0) ? 0
+    : ((numSamples*2*MILLION)/freq + 1)/2; // rounds to nearest integer
+
+  struct timeval result;
+  result.tv_sec = uSeconds/MILLION;
+  result.tv_usec = uSeconds%MILLION;
+  return result;
+}
+
+void AC3AudioStreamFramer
+::handleNewData(void* clientData, unsigned char* ptr, unsigned size,
+		struct timeval /*presentationTime*/) {
+  AC3AudioStreamFramer* framer = (AC3AudioStreamFramer*)clientData;
+  framer->handleNewData(ptr, size);
+}
+
+void AC3AudioStreamFramer
+::handleNewData(unsigned char* ptr, unsigned size) {
+  fParser->testStreamCode(fOurStreamCode, ptr, size);
+
+  parseNextFrame();
+}
+
+void AC3AudioStreamFramer::parseNextFrame() {
+  unsigned acquiredFrameSize = fParser->parseFrame(fNumTruncatedBytes);
+  if (acquiredFrameSize > 0) {
+    // We were able to acquire a frame from the input.
+    // It has already been copied to the reader's space.
+    fFrameSize = acquiredFrameSize;
+
+    // Also set the presentation time, and increment it for next time,
+    // based on the length of this frame:
+    fPresentationTime = fNextFramePresentationTime;
+
+    struct timeval framePlayTime = currentFramePlayTime();
+    fDurationInMicroseconds = framePlayTime.tv_sec*MILLION + framePlayTime.tv_usec;
+    fNextFramePresentationTime.tv_usec += framePlayTime.tv_usec;
+    fNextFramePresentationTime.tv_sec
+      += framePlayTime.tv_sec + fNextFramePresentationTime.tv_usec/MILLION;
+    fNextFramePresentationTime.tv_usec %= MILLION;
+
+    // Call our own 'after getting' function.  Because we're not a 'leaf'
+    // source, we can call this directly, without risking infinite recursion.
+    afterGetting(this);
+  } else {
+    // We were unable to parse a complete frame from the input, because:
+    // - we had to read more data from the source stream, or
+    // - the source stream has ended.
+  }
+}
+
+
+////////// AC3AudioStreamParser implementation //////////
+
+static int const kbpsTable[] = {32,  40,  48,  56,  64,  80,  96, 112,
+				128, 160, 192, 224, 256, 320, 384, 448,
+				512, 576, 640};
+
+void AC3FrameParams::setParamsFromHeader() {
+  unsigned char byte4 = hdr1 >> 24;
+
+  unsigned char kbpsIndex = (byte4&0x3E) >> 1;
+  if (kbpsIndex > 18) kbpsIndex = 18;
+  kbps = kbpsTable[kbpsIndex];
+
+  unsigned char samplingFreqIndex = (byte4&0xC0) >> 6;
+  switch (samplingFreqIndex) {
+  case 0:
+    samplingFreq = 48000;
+    frameSize = 4*kbps;
+    break;
+  case 1:
+    samplingFreq = 44100;
+    frameSize = 2*(320*kbps/147 + (byte4&1));
+    break;
+  case 2:
+  case 3: // not legal?
+    samplingFreq = 32000;
+    frameSize = 6*kbps;
+  }
+}
+
+AC3AudioStreamParser
+::AC3AudioStreamParser(AC3AudioStreamFramer* usingSource,
+			FramedSource* inputSource)
+  : StreamParser(inputSource, FramedSource::handleClosure, usingSource,
+		 &AC3AudioStreamFramer::handleNewData, usingSource),
+    fUsingSource(usingSource), fHaveParsedAFrame(False),
+    fSavedFrame(NULL), fSavedFrameSize(0) {
+}
+
+AC3AudioStreamParser::~AC3AudioStreamParser() {
+}
+
+void AC3AudioStreamParser::registerReadInterest(unsigned char* to,
+						 unsigned maxSize) {
+  fTo = to;
+  fMaxSize = maxSize;
+}
+
+void AC3AudioStreamParser
+::testStreamCode(unsigned char ourStreamCode,
+		 unsigned char* ptr, unsigned size) {
+  if (ourStreamCode == 0) return; // we assume that there's no stream code at the beginning of the data
+
+  if (size < 4) return;
+  unsigned char streamCode = *ptr;
+
+  if (streamCode == ourStreamCode) {
+    // Remove the first 4 bytes from the stream:
+    memmove(ptr, ptr + 4, size - 4);
+    totNumValidBytes() = totNumValidBytes() - 4;
+  } else {
+    // Discard all of the data that was just read:
+    totNumValidBytes() = totNumValidBytes() - size;
+  }
+}
+
+unsigned AC3AudioStreamParser::parseFrame(unsigned& numTruncatedBytes) {
+  if (fSavedFrameSize > 0) {
+    // We've already read and parsed a frame.  Use it instead:
+    memmove(fTo, fSavedFrame, fSavedFrameSize);
+    delete[] fSavedFrame; fSavedFrame = NULL;
+    unsigned frameSize = fSavedFrameSize;
+    fSavedFrameSize = 0;
+    return frameSize;
+  }
+
+  try {
+    saveParserState();
+
+    // We expect an AC3 audio header (first 2 bytes == 0x0B77) at the start:
+    while (1) {
+      unsigned next4Bytes = test4Bytes();
+      if (next4Bytes>>16 == 0x0B77) break;
+      skipBytes(1);
+      saveParserState();
+    }
+    fCurrentFrame.hdr0 = get4Bytes();
+    fCurrentFrame.hdr1 = test4Bytes();
+
+    fCurrentFrame.setParamsFromHeader();
+    fHaveParsedAFrame = True;
+
+    // Copy the frame to the requested destination:
+    unsigned frameSize = fCurrentFrame.frameSize;
+    if (frameSize > fMaxSize) {
+      numTruncatedBytes = frameSize - fMaxSize;
+      frameSize = fMaxSize;
+    } else {
+      numTruncatedBytes = 0;
+    }
+
+    fTo[0] = fCurrentFrame.hdr0 >> 24;
+    fTo[1] = fCurrentFrame.hdr0 >> 16;
+    fTo[2] = fCurrentFrame.hdr0 >> 8;
+    fTo[3] = fCurrentFrame.hdr0;
+    getBytes(&fTo[4], frameSize-4);
+    skipBytes(numTruncatedBytes);
+
+    return frameSize;
+  } catch (int /*e*/) {
+#ifdef DEBUG
+    fUsingSource->envir() << "AC3AudioStreamParser::parseFrame() EXCEPTION (This is normal behavior - *not* an error)\n";
+#endif
+    return 0;  // the parsing got interrupted
+  }
+}
+
+void AC3AudioStreamParser::readAndSaveAFrame() {
+  unsigned const maxAC3FrameSize = 4000;
+  fSavedFrame = new unsigned char[maxAC3FrameSize];
+  fSavedFrameSize = 0;
+
+  fSavedFrameFlag = 0;
+  fUsingSource->getNextFrame(fSavedFrame, maxAC3FrameSize,
+			     afterGettingSavedFrame, this,
+			     onSavedFrameClosure, this);
+  fUsingSource->envir().taskScheduler().doEventLoop(&fSavedFrameFlag);
+}
+
+void AC3AudioStreamParser
+::afterGettingSavedFrame(void* clientData, unsigned frameSize,
+			 unsigned /*numTruncatedBytes*/,
+			 struct timeval /*presentationTime*/,
+			 unsigned /*durationInMicroseconds*/) {
+  AC3AudioStreamParser* parser = (AC3AudioStreamParser*)clientData;
+  parser->afterGettingSavedFrame1(frameSize);
+}
+
+void AC3AudioStreamParser
+::afterGettingSavedFrame1(unsigned frameSize) {
+  fSavedFrameSize = frameSize;
+  fSavedFrameFlag = ~0;
+}
+
+void AC3AudioStreamParser::onSavedFrameClosure(void* clientData) {
+  AC3AudioStreamParser* parser = (AC3AudioStreamParser*)clientData;
+  parser->onSavedFrameClosure1();
+}
+
+void AC3AudioStreamParser::onSavedFrameClosure1() {
+  delete[] fSavedFrame; fSavedFrame = NULL;
+  fSavedFrameSize = 0;
+  fSavedFrameFlag = ~0;
+}
diff --git a/liveMedia/ADTSAudioFileServerMediaSubsession.cpp b/liveMedia/ADTSAudioFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..a30a94b
--- /dev/null
+++ b/liveMedia/ADTSAudioFileServerMediaSubsession.cpp
@@ -0,0 +1,60 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an AAC audio file in ADTS format
+// Implementation
+
+#include "ADTSAudioFileServerMediaSubsession.hh"
+#include "ADTSAudioFileSource.hh"
+#include "MPEG4GenericRTPSink.hh"
+
+ADTSAudioFileServerMediaSubsession*
+ADTSAudioFileServerMediaSubsession::createNew(UsageEnvironment& env,
+					     char const* fileName,
+					     Boolean reuseFirstSource) {
+  return new ADTSAudioFileServerMediaSubsession(env, fileName, reuseFirstSource);
+}
+
+ADTSAudioFileServerMediaSubsession
+::ADTSAudioFileServerMediaSubsession(UsageEnvironment& env,
+				    char const* fileName, Boolean reuseFirstSource)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource) {
+}
+
+ADTSAudioFileServerMediaSubsession
+::~ADTSAudioFileServerMediaSubsession() {
+}
+
+FramedSource* ADTSAudioFileServerMediaSubsession
+::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  estBitrate = 96; // kbps, estimate
+
+  return ADTSAudioFileSource::createNew(envir(), fFileName);
+}
+
+RTPSink* ADTSAudioFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock,
+		   unsigned char rtpPayloadTypeIfDynamic,
+		   FramedSource* inputSource) {
+  ADTSAudioFileSource* adtsSource = (ADTSAudioFileSource*)inputSource;
+  return MPEG4GenericRTPSink::createNew(envir(), rtpGroupsock,
+					rtpPayloadTypeIfDynamic,
+					adtsSource->samplingFrequency(),
+					"audio", "AAC-hbr", adtsSource->configStr(),
+					adtsSource->numChannels());
+}
diff --git a/liveMedia/ADTSAudioFileSource.cpp b/liveMedia/ADTSAudioFileSource.cpp
new file mode 100644
index 0000000..85cb6e4
--- /dev/null
+++ b/liveMedia/ADTSAudioFileSource.cpp
@@ -0,0 +1,171 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A source object for AAC audio files in ADTS format
+// Implementation
+
+#include "ADTSAudioFileSource.hh"
+#include "InputFile.hh"
+#include <GroupsockHelper.hh>
+
+////////// ADTSAudioFileSource //////////
+
+static unsigned const samplingFrequencyTable[16] = {
+  96000, 88200, 64000, 48000,
+  44100, 32000, 24000, 22050,
+  16000, 12000, 11025, 8000,
+  7350, 0, 0, 0
+};
+
+ADTSAudioFileSource*
+ADTSAudioFileSource::createNew(UsageEnvironment& env, char const* fileName) {
+  FILE* fid = NULL;
+  do {
+    fid = OpenInputFile(env, fileName);
+    if (fid == NULL) break;
+
+    // Now, having opened the input file, read the fixed header of the first frame,
+    // to get the audio stream's parameters:
+    unsigned char fixedHeader[4]; // it's actually 3.5 bytes long
+    if (fread(fixedHeader, 1, sizeof fixedHeader, fid) < sizeof fixedHeader) break;
+
+    // Check the 'syncword':
+    if (!(fixedHeader[0] == 0xFF && (fixedHeader[1]&0xF0) == 0xF0)) {
+      env.setResultMsg("Bad 'syncword' at start of ADTS file");
+      break;
+    }
+
+    // Get and check the 'profile':
+    u_int8_t profile = (fixedHeader[2]&0xC0)>>6; // 2 bits
+    if (profile == 3) {
+      env.setResultMsg("Bad (reserved) 'profile': 3 in first frame of ADTS file");
+      break;
+    }
+
+    // Get and check the 'sampling_frequency_index':
+    u_int8_t sampling_frequency_index = (fixedHeader[2]&0x3C)>>2; // 4 bits
+    if (samplingFrequencyTable[sampling_frequency_index] == 0) {
+      env.setResultMsg("Bad 'sampling_frequency_index' in first frame of ADTS file");
+      break;
+    }
+
+    // Get and check the 'channel_configuration':
+    u_int8_t channel_configuration
+      = ((fixedHeader[2]&0x01)<<2)|((fixedHeader[3]&0xC0)>>6); // 3 bits
+
+    // If we get here, the frame header was OK.
+    // Reset the fid to the beginning of the file:
+#ifndef _WIN32_WCE
+    rewind(fid);
+#else
+    SeekFile64(fid, SEEK_SET,0);
+#endif
+#ifdef DEBUG
+    fprintf(stderr, "Read first frame: profile %d, "
+	    "sampling_frequency_index %d => samplingFrequency %d, "
+	    "channel_configuration %d\n",
+	    profile,
+	    sampling_frequency_index, samplingFrequencyTable[sampling_frequency_index],
+	    channel_configuration);
+#endif
+    return new ADTSAudioFileSource(env, fid, profile,
+				   sampling_frequency_index, channel_configuration);
+  } while (0);
+
+  // An error occurred:
+  CloseInputFile(fid);
+  return NULL;
+}
+
+ADTSAudioFileSource
+::ADTSAudioFileSource(UsageEnvironment& env, FILE* fid, u_int8_t profile,
+		      u_int8_t samplingFrequencyIndex, u_int8_t channelConfiguration)
+  : FramedFileSource(env, fid) {
+  fSamplingFrequency = samplingFrequencyTable[samplingFrequencyIndex];
+  fNumChannels = channelConfiguration == 0 ? 2 : channelConfiguration;
+  fuSecsPerFrame
+    = (1024/*samples-per-frame*/*1000000) / fSamplingFrequency/*samples-per-second*/;
+
+  // Construct the 'AudioSpecificConfig', and from it, the corresponding ASCII string:
+  unsigned char audioSpecificConfig[2];
+  u_int8_t const audioObjectType = profile + 1;
+  audioSpecificConfig[0] = (audioObjectType<<3) | (samplingFrequencyIndex>>1);
+  audioSpecificConfig[1] = (samplingFrequencyIndex<<7) | (channelConfiguration<<3);
+  sprintf(fConfigStr, "%02X%02x", audioSpecificConfig[0], audioSpecificConfig[1]);
+}
+
+ADTSAudioFileSource::~ADTSAudioFileSource() {
+  CloseInputFile(fFid);
+}
+
+// Note: We should change the following to use asynchronous file reading, #####
+// as we now do with ByteStreamFileSource. #####
+void ADTSAudioFileSource::doGetNextFrame() {
+  // Begin by reading the 7-byte fixed_variable headers:
+  unsigned char headers[7];
+  if (fread(headers, 1, sizeof headers, fFid) < sizeof headers
+      || feof(fFid) || ferror(fFid)) {
+    // The input source has ended:
+    handleClosure();
+    return;
+  }
+
+  // Extract important fields from the headers:
+  Boolean protection_absent = headers[1]&0x01;
+  u_int16_t frame_length
+    = ((headers[3]&0x03)<<11) | (headers[4]<<3) | ((headers[5]&0xE0)>>5);
+#ifdef DEBUG
+  u_int16_t syncword = (headers[0]<<4) | (headers[1]>>4);
+  fprintf(stderr, "Read frame: syncword 0x%x, protection_absent %d, frame_length %d\n", syncword, protection_absent, frame_length);
+  if (syncword != 0xFFF) fprintf(stderr, "WARNING: Bad syncword!\n");
+#endif
+  unsigned numBytesToRead
+    = frame_length > sizeof headers ? frame_length - sizeof headers : 0;
+
+  // If there's a 'crc_check' field, skip it:
+  if (!protection_absent) {
+    SeekFile64(fFid, 2, SEEK_CUR);
+    numBytesToRead = numBytesToRead > 2 ? numBytesToRead - 2 : 0;
+  }
+
+  // Next, read the raw frame data into the buffer provided:
+  if (numBytesToRead > fMaxSize) {
+    fNumTruncatedBytes = numBytesToRead - fMaxSize;
+    numBytesToRead = fMaxSize;
+  }
+  int numBytesRead = fread(fTo, 1, numBytesToRead, fFid);
+  if (numBytesRead < 0) numBytesRead = 0;
+  fFrameSize = numBytesRead;
+  fNumTruncatedBytes += numBytesToRead - numBytesRead;
+
+  // Set the 'presentation time':
+  if (fPresentationTime.tv_sec == 0 && fPresentationTime.tv_usec == 0) {
+    // This is the first frame, so use the current time:
+    gettimeofday(&fPresentationTime, NULL);
+  } else {
+    // Increment by the play time of the previous frame:
+    unsigned uSeconds = fPresentationTime.tv_usec + fuSecsPerFrame;
+    fPresentationTime.tv_sec += uSeconds/1000000;
+    fPresentationTime.tv_usec = uSeconds%1000000;
+  }
+
+  fDurationInMicroseconds = fuSecsPerFrame;
+
+  // Switch to another task, and inform the reader that he has data:
+  nextTask() = envir().taskScheduler().scheduleDelayedTask(0,
+				(TaskFunc*)FramedSource::afterGetting, this);
+}
diff --git a/liveMedia/AMRAudioFileServerMediaSubsession.cpp b/liveMedia/AMRAudioFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..feab340
--- /dev/null
+++ b/liveMedia/AMRAudioFileServerMediaSubsession.cpp
@@ -0,0 +1,59 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an AMR audio file.
+// Implementation
+
+#include "AMRAudioFileServerMediaSubsession.hh"
+#include "AMRAudioRTPSink.hh"
+#include "AMRAudioFileSource.hh"
+
+AMRAudioFileServerMediaSubsession*
+AMRAudioFileServerMediaSubsession::createNew(UsageEnvironment& env,
+					     char const* fileName,
+					     Boolean reuseFirstSource) {
+  return new AMRAudioFileServerMediaSubsession(env, fileName, reuseFirstSource);
+}
+
+AMRAudioFileServerMediaSubsession
+::AMRAudioFileServerMediaSubsession(UsageEnvironment& env,
+				    char const* fileName, Boolean reuseFirstSource)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource) {
+}
+
+AMRAudioFileServerMediaSubsession
+::~AMRAudioFileServerMediaSubsession() {
+}
+
+FramedSource* AMRAudioFileServerMediaSubsession
+::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  estBitrate = 10; // kbps, estimate
+
+  return AMRAudioFileSource::createNew(envir(), fFileName);
+}
+
+RTPSink* AMRAudioFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock,
+		   unsigned char rtpPayloadTypeIfDynamic,
+		   FramedSource* inputSource) {
+  AMRAudioFileSource* amrSource = (AMRAudioFileSource*)inputSource;
+  return AMRAudioRTPSink::createNew(envir(), rtpGroupsock,
+				    rtpPayloadTypeIfDynamic,
+				    amrSource->isWideband(),
+				    amrSource->numChannels());
+}
diff --git a/liveMedia/AMRAudioFileSink.cpp b/liveMedia/AMRAudioFileSink.cpp
new file mode 100644
index 0000000..c96f042
--- /dev/null
+++ b/liveMedia/AMRAudioFileSink.cpp
@@ -0,0 +1,101 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// AMR Audio File sinks
+// Implementation
+
+#include "AMRAudioFileSink.hh"
+#include "AMRAudioSource.hh"
+#include "OutputFile.hh"
+
+////////// AMRAudioFileSink //////////
+
+AMRAudioFileSink
+::AMRAudioFileSink(UsageEnvironment& env, FILE* fid, unsigned bufferSize,
+		   char const* perFrameFileNamePrefix)
+  : FileSink(env, fid, bufferSize, perFrameFileNamePrefix),
+    fHaveWrittenHeader(False) {
+}
+
+AMRAudioFileSink::~AMRAudioFileSink() {
+}
+
+AMRAudioFileSink*
+AMRAudioFileSink::createNew(UsageEnvironment& env, char const* fileName,
+			    unsigned bufferSize, Boolean oneFilePerFrame) {
+  do {
+    FILE* fid;
+    char const* perFrameFileNamePrefix;
+    if (oneFilePerFrame) {
+      // Create the fid for each frame
+      fid = NULL;
+      perFrameFileNamePrefix = fileName;
+    } else {
+      // Normal case: create the fid once
+      fid = OpenOutputFile(env, fileName);
+      if (fid == NULL) break;
+      perFrameFileNamePrefix = NULL;
+    }
+
+    return new AMRAudioFileSink(env, fid, bufferSize, perFrameFileNamePrefix);
+  } while (0);
+
+  return NULL;
+}
+
+Boolean AMRAudioFileSink::sourceIsCompatibleWithUs(MediaSource& source) {
+  // The input source must be a AMR Audio source:
+  return source.isAMRAudioSource();
+}
+
+void AMRAudioFileSink::afterGettingFrame(unsigned frameSize,
+					 unsigned numTruncatedBytes,
+					 struct timeval presentationTime) {
+  AMRAudioSource* source = (AMRAudioSource*)fSource;
+  if (source == NULL) return; // sanity check
+
+  if (!fHaveWrittenHeader && fPerFrameFileNameBuffer == NULL) {
+    // Output the appropriate AMR header to the start of the file.
+    // This header is defined in RFC 4867, section 5.
+    // (However, we don't do this if we're creating one file per frame.)
+    char headerBuffer[100];
+    sprintf(headerBuffer, "#!AMR%s%s\n",
+	    source->isWideband() ? "-WB" : "",
+	    source->numChannels() > 1 ? "_MC1.0" : "");
+    unsigned headerLength = strlen(headerBuffer);
+    if (source->numChannels() > 1) {
+      // Also add a 32-bit channel description field:
+      headerBuffer[headerLength++] = 0;
+      headerBuffer[headerLength++] = 0;
+      headerBuffer[headerLength++] = 0;
+      headerBuffer[headerLength++] = source->numChannels();
+    }
+
+    addData((unsigned char*)headerBuffer, headerLength, presentationTime);
+  }
+  fHaveWrittenHeader = True;
+
+  // Add the 1-byte header, before writing the file data proper:
+  // (Again, we don't do this if we're creating one file per frame.)
+  if (fPerFrameFileNameBuffer == NULL) {
+    u_int8_t frameHeader = source->lastFrameHeader();
+    addData(&frameHeader, 1, presentationTime);
+  }
+
+  // Call the parent class to complete the normal file write with the input data:
+  FileSink::afterGettingFrame(frameSize, numTruncatedBytes, presentationTime);
+}
diff --git a/liveMedia/AMRAudioFileSource.cpp b/liveMedia/AMRAudioFileSource.cpp
new file mode 100644
index 0000000..ca92d54
--- /dev/null
+++ b/liveMedia/AMRAudioFileSource.cpp
@@ -0,0 +1,174 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A source object for AMR audio files (as defined in RFC 4867, section 5)
+// Implementation
+
+#include "AMRAudioFileSource.hh"
+#include "InputFile.hh"
+#include "GroupsockHelper.hh"
+
+////////// AMRAudioFileSource //////////
+
+AMRAudioFileSource*
+AMRAudioFileSource::createNew(UsageEnvironment& env, char const* fileName) {
+  FILE* fid = NULL;
+  Boolean magicNumberOK = True;
+  do {
+
+    fid = OpenInputFile(env, fileName);
+    if (fid == NULL) break;
+
+    // Now, having opened the input file, read the first few bytes, to
+    // check the required 'magic number':
+    magicNumberOK = False; // until we learn otherwise
+    Boolean isWideband = False; // by default
+    unsigned numChannels = 1; // by default
+    char buf[100];
+    // Start with the first 6 bytes (the first 5 of which must be "#!AMR"):
+    if (fread(buf, 1, 6, fid) < 6) break;
+    if (strncmp(buf, "#!AMR", 5) != 0) break; // bad magic #
+    unsigned bytesRead = 6;
+
+    // The next bytes must be "\n", "-WB\n", "_MC1.0\n", or "-WB_MC1.0\n"
+    if (buf[5] == '-') {
+      // The next bytes must be "WB\n" or "WB_MC1.0\n"
+      if (fread(&buf[bytesRead], 1, 3, fid) < 3) break;
+      if (strncmp(&buf[bytesRead], "WB", 2) != 0) break; // bad magic #
+      isWideband = True;
+      bytesRead += 3;
+    }
+    if (buf[bytesRead-1] == '_') {
+      // The next bytes must be "MC1.0\n"
+      if (fread(&buf[bytesRead], 1, 6, fid) < 6) break;
+      if (strncmp(&buf[bytesRead], "MC1.0\n", 6) != 0) break; // bad magic #
+      bytesRead += 6;
+
+      // The next 4 bytes contain the number of channels:
+      char channelDesc[4];
+      if (fread(channelDesc, 1, 4, fid) < 4) break;
+      numChannels = channelDesc[3]&0xF;
+    } else if (buf[bytesRead-1] != '\n') {
+      break; // bad magic #
+    }
+
+    // If we get here, the magic number was OK:
+    magicNumberOK = True;
+
+#ifdef DEBUG
+    fprintf(stderr, "isWideband: %d, numChannels: %d\n",
+	    isWideband, numChannels);
+#endif
+    return new AMRAudioFileSource(env, fid, isWideband, numChannels);
+  } while (0);
+
+  // An error occurred:
+  CloseInputFile(fid);
+  if (!magicNumberOK) {
+    env.setResultMsg("Bad (or nonexistent) AMR file header");
+  }
+  return NULL;
+}
+
+AMRAudioFileSource
+::AMRAudioFileSource(UsageEnvironment& env, FILE* fid,
+		     Boolean isWideband, unsigned numChannels)
+  : AMRAudioSource(env, isWideband, numChannels),
+    fFid(fid) {
+}
+
+AMRAudioFileSource::~AMRAudioFileSource() {
+  CloseInputFile(fFid);
+}
+
+// The mapping from the "FT" field to frame size.
+// Values of 65535 are invalid.
+#define FT_INVALID 65535
+static unsigned short const frameSize[16] = {
+  12, 13, 15, 17,
+  19, 20, 26, 31,
+  5, FT_INVALID, FT_INVALID, FT_INVALID,
+  FT_INVALID, FT_INVALID, FT_INVALID, 0
+};
+static unsigned short const frameSizeWideband[16] = {
+  17, 23, 32, 36,
+  40, 46, 50, 58,
+  60, 5, FT_INVALID, FT_INVALID,
+  FT_INVALID, FT_INVALID, 0, 0
+};
+
+// Note: We should change the following to use asynchronous file reading, #####
+// as we now do with ByteStreamFileSource. #####
+void AMRAudioFileSource::doGetNextFrame() {
+  if (feof(fFid) || ferror(fFid)) {
+    handleClosure();
+    return;
+  }
+
+  // Begin by reading the 1-byte frame header (and checking it for validity)
+  while (1) {
+    if (fread(&fLastFrameHeader, 1, 1, fFid) < 1) {
+      handleClosure();
+      return;
+    }
+    if ((fLastFrameHeader&0x83) != 0) {
+#ifdef DEBUG
+      fprintf(stderr, "Invalid frame header 0x%02x (padding bits (0x83) are not zero)\n", fLastFrameHeader);
+#endif
+    } else {
+      unsigned char ft = (fLastFrameHeader&0x78)>>3;
+      fFrameSize = fIsWideband ? frameSizeWideband[ft] : frameSize[ft];
+      if (fFrameSize == FT_INVALID) {
+#ifdef DEBUG
+	fprintf(stderr, "Invalid FT field %d (from frame header 0x%02x)\n",
+		ft, fLastFrameHeader);
+#endif
+      } else {
+	// The frame header is OK
+#ifdef DEBUG
+	fprintf(stderr, "Valid frame header 0x%02x -> ft %d -> frame size %d\n", fLastFrameHeader, ft, fFrameSize);
+#endif
+	break;
+      }
+    }
+  }
+
+  // Next, read the frame-block into the buffer provided:
+  fFrameSize *= fNumChannels; // because multiple channels make up a frame-block
+  if (fFrameSize > fMaxSize) {
+    fNumTruncatedBytes = fFrameSize - fMaxSize;
+    fFrameSize = fMaxSize;
+  }
+  fFrameSize = fread(fTo, 1, fFrameSize, fFid);
+
+  // Set the 'presentation time':
+  if (fPresentationTime.tv_sec == 0 && fPresentationTime.tv_usec == 0) {
+    // This is the first frame, so use the current time:
+    gettimeofday(&fPresentationTime, NULL);
+  } else {
+    // Increment by the play time of the previous frame (20 ms)
+    unsigned uSeconds	= fPresentationTime.tv_usec + 20000;
+    fPresentationTime.tv_sec += uSeconds/1000000;
+    fPresentationTime.tv_usec = uSeconds%1000000;
+  }
+
+  fDurationInMicroseconds = 20000; // each frame is 20 ms
+
+  // Switch to another task, and inform the reader that he has data:
+  nextTask() = envir().taskScheduler().scheduleDelayedTask(0,
+				(TaskFunc*)FramedSource::afterGetting, this);
+ }
diff --git a/liveMedia/AMRAudioRTPSink.cpp b/liveMedia/AMRAudioRTPSink.cpp
new file mode 100644
index 0000000..7d0cc33
--- /dev/null
+++ b/liveMedia/AMRAudioRTPSink.cpp
@@ -0,0 +1,134 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for AMR audio (RFC 4867)
+// Implementation
+
+// NOTE: At present, this is just a limited implementation, supporting:
+// octet-alignment only; no interleaving; no frame CRC; no robust-sorting.
+
+#include "AMRAudioRTPSink.hh"
+#include "AMRAudioSource.hh"
+
+AMRAudioRTPSink*
+AMRAudioRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			   unsigned char rtpPayloadFormat,
+			   Boolean sourceIsWideband,
+			   unsigned numChannelsInSource) {
+  return new AMRAudioRTPSink(env, RTPgs, rtpPayloadFormat,
+			     sourceIsWideband, numChannelsInSource);
+}
+
+AMRAudioRTPSink
+::AMRAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		  unsigned char rtpPayloadFormat,
+		  Boolean sourceIsWideband, unsigned numChannelsInSource)
+  : AudioRTPSink(env, RTPgs, rtpPayloadFormat,
+		 sourceIsWideband ? 16000 : 8000,
+		 sourceIsWideband ? "AMR-WB": "AMR",
+		 numChannelsInSource),
+  fSourceIsWideband(sourceIsWideband), fFmtpSDPLine(NULL) {
+}
+
+AMRAudioRTPSink::~AMRAudioRTPSink() {
+  delete[] fFmtpSDPLine;
+}
+
+Boolean AMRAudioRTPSink::sourceIsCompatibleWithUs(MediaSource& source) {
+  // Our source must be an AMR audio source:
+  if (!source.isAMRAudioSource()) return False;
+
+  // Also, the source must be wideband iff we asked for this:
+  AMRAudioSource& amrSource = (AMRAudioSource&)source;
+  if ((amrSource.isWideband()^fSourceIsWideband) != 0) return False;
+
+  // Also, the source must have the same number of channels that we
+  // specified.  (It could, in principle, have more, but we don't
+  // support that.)
+  if (amrSource.numChannels() != numChannels()) return False;
+
+  // Also, because in our current implementation we output only one
+  // frame in each RTP packet, this means that for multi-channel audio,
+  // each 'frame-block' will be split over multiple RTP packets, which
+  // may violate the spec.  Warn about this:
+  if (amrSource.numChannels() > 1) {
+    envir() << "AMRAudioRTPSink: Warning: Input source has " << amrSource.numChannels()
+	    << " audio channels.  In the current implementation, the multi-frame frame-block will be split over multiple RTP packets\n";
+  }
+
+  return True;
+}
+
+void AMRAudioRTPSink::doSpecialFrameHandling(unsigned fragmentationOffset,
+					     unsigned char* frameStart,
+					     unsigned numBytesInFrame,
+					     struct timeval framePresentationTime,
+					     unsigned numRemainingBytes) {
+  // If this is the 1st frame in the 1st packet, set the RTP 'M' (marker)
+  // bit (because this is considered the start of a talk spurt):
+  if (isFirstPacket() && isFirstFrameInPacket()) {
+    setMarkerBit();
+  }
+
+  // If this is the first frame in the packet, set the 1-byte payload
+  // header (using CMR 15)
+  if (isFirstFrameInPacket()) {
+    u_int8_t payloadHeader = 0xF0;
+    setSpecialHeaderBytes(&payloadHeader, 1, 0);
+  }
+
+  // Set the TOC field for the current frame, based on the "FT" and "Q"
+  // values from our source:
+  AMRAudioSource* amrSource = (AMRAudioSource*)fSource;
+  if (amrSource == NULL) return; // sanity check
+
+  u_int8_t toc = amrSource->lastFrameHeader();
+  // Clear the "F" bit, because we're the last frame in this packet: #####
+  toc &=~ 0x80;
+  setSpecialHeaderBytes(&toc, 1, 1+numFramesUsedSoFar());
+
+  // Important: Also call our base class's doSpecialFrameHandling(),
+  // to set the packet's timestamp:
+  MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
+                                             frameStart, numBytesInFrame,
+                                             framePresentationTime,
+                                             numRemainingBytes);
+}
+
+Boolean AMRAudioRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+				 unsigned /*numBytesInFrame*/) const {
+  // For now, pack only one AMR frame into each outgoing RTP packet: #####
+  return False;
+}
+
+unsigned AMRAudioRTPSink::specialHeaderSize() const {
+  // For now, because we're packing only one frame per packet,
+  // there's just a 1-byte payload header, plus a 1-byte TOC #####
+  return 2;
+}
+
+char const* AMRAudioRTPSink::auxSDPLine() {
+  if (fFmtpSDPLine == NULL) {
+    // Generate a "a=fmtp:" line with "octet-aligned=1"
+    // (That is the only non-default parameter.)
+    char buf[100];
+    sprintf(buf, "a=fmtp:%d octet-align=1\r\n", rtpPayloadType());
+    delete[] fFmtpSDPLine; fFmtpSDPLine = strDup(buf);
+  }
+  return fFmtpSDPLine;
+}
diff --git a/liveMedia/AMRAudioRTPSource.cpp b/liveMedia/AMRAudioRTPSource.cpp
new file mode 100644
index 0000000..5370a8f
--- /dev/null
+++ b/liveMedia/AMRAudioRTPSource.cpp
@@ -0,0 +1,749 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// AMR Audio RTP Sources (RFC 4867)
+// Implementation
+
+#include "AMRAudioRTPSource.hh"
+#include "MultiFramedRTPSource.hh"
+#include "BitVector.hh"
+#include <string.h>
+#include <stdlib.h>
+
+// This source is implemented internally by two separate sources:
+// (i) a RTP source for the raw (and possibly interleaved) AMR frames, and
+// (ii) a deinterleaving filter that reads from this.
+// Define these two new classes here:
+
+class RawAMRRTPSource: public MultiFramedRTPSource {
+public:
+  static RawAMRRTPSource*
+  createNew(UsageEnvironment& env,
+	    Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+	    Boolean isWideband, Boolean isOctetAligned,
+	    Boolean isInterleaved, Boolean CRCsArePresent);
+
+  Boolean isWideband() const { return fIsWideband; }
+  unsigned char ILL() const { return fILL; }
+  unsigned char ILP() const { return fILP; }
+  unsigned TOCSize() const { return fTOCSize; } // total # of frames in the last pkt
+  unsigned char* TOC() const { return fTOC; } // FT+Q value for each TOC entry
+  unsigned& frameIndex() { return fFrameIndex; } // index of frame-block within pkt
+  Boolean& isSynchronized() { return fIsSynchronized; }
+
+private:
+  RawAMRRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		  unsigned char rtpPayloadFormat,
+		  Boolean isWideband, Boolean isOctetAligned,
+		  Boolean isInterleaved, Boolean CRCsArePresent);
+      // called only by createNew()
+
+  virtual ~RawAMRRTPSource();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean hasBeenSynchronizedUsingRTCP();
+
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  Boolean fIsWideband, fIsOctetAligned, fIsInterleaved, fCRCsArePresent;
+  unsigned char fILL, fILP;
+  unsigned fTOCSize;
+  unsigned char* fTOC;
+  unsigned fFrameIndex;
+  Boolean fIsSynchronized;
+};
+
+class AMRDeinterleaver: public AMRAudioSource {
+public:
+  static AMRDeinterleaver*
+  createNew(UsageEnvironment& env,
+	    Boolean isWideband, unsigned numChannels, unsigned maxInterleaveGroupSize,
+	    RawAMRRTPSource* inputSource);
+
+private:
+  AMRDeinterleaver(UsageEnvironment& env,
+		   Boolean isWideband, unsigned numChannels,
+		   unsigned maxInterleaveGroupSize, RawAMRRTPSource* inputSource);
+      // called only by "createNew()"
+
+  virtual ~AMRDeinterleaver();
+
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize, struct timeval presentationTime);
+
+private:
+  // Redefined virtual functions:
+  void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+private:
+  RawAMRRTPSource* fInputSource;
+  class AMRDeinterleavingBuffer* fDeinterleavingBuffer;
+  Boolean fNeedAFrame;
+};
+
+
+////////// AMRAudioRTPSource implementation //////////
+
+#define MAX_NUM_CHANNELS 20 // far larger than ever expected...
+#define MAX_INTERLEAVING_GROUP_SIZE 1000 // far larger than ever expected...
+
+AMRAudioSource*
+AMRAudioRTPSource::createNew(UsageEnvironment& env,
+			     Groupsock* RTPgs,
+			     RTPSource*& resultRTPSource,
+			     unsigned char rtpPayloadFormat,
+			     Boolean isWideband,
+			     unsigned numChannels,
+			     Boolean isOctetAligned,
+			     unsigned interleaving,
+			     Boolean robustSortingOrder,
+			     Boolean CRCsArePresent) {
+  // Perform sanity checks on the input parameters:
+  if (robustSortingOrder) {
+    env << "AMRAudioRTPSource::createNew(): 'Robust sorting order' was specified, but we don't yet support this!\n";
+    return NULL;
+  } else if (numChannels > MAX_NUM_CHANNELS) {
+    env << "AMRAudioRTPSource::createNew(): The \"number of channels\" parameter ("
+	<< numChannels << ") is much too large!\n";
+    return NULL;
+  } else if (interleaving > MAX_INTERLEAVING_GROUP_SIZE) {
+    env << "AMRAudioRTPSource::createNew(): The \"interleaving\" parameter ("
+	<< interleaving << ") is much too large!\n";
+    return NULL;
+  }
+
+  // 'Bandwidth-efficient mode' precludes some other options:
+  if (!isOctetAligned) {
+    if (interleaving > 0 || robustSortingOrder || CRCsArePresent) {
+      env << "AMRAudioRTPSource::createNew(): 'Bandwidth-efficient mode' was specified, along with interleaving, 'robust sorting order', and/or CRCs, so we assume 'octet-aligned mode' instead.\n";
+      isOctetAligned = True;
+    }
+  }
+
+  Boolean isInterleaved;
+  unsigned maxInterleaveGroupSize; // in frames (not frame-blocks)
+  if (interleaving > 0) {
+    isInterleaved = True;
+    maxInterleaveGroupSize = interleaving*numChannels;
+  } else {
+    isInterleaved = False;
+    maxInterleaveGroupSize = numChannels;
+  }
+
+  RawAMRRTPSource* rawRTPSource;
+  resultRTPSource = rawRTPSource
+    = RawAMRRTPSource::createNew(env, RTPgs, rtpPayloadFormat,
+				 isWideband, isOctetAligned,
+				 isInterleaved, CRCsArePresent);
+  if (resultRTPSource == NULL) return NULL;
+
+  AMRDeinterleaver* deinterleaver
+    = AMRDeinterleaver::createNew(env, isWideband, numChannels,
+				  maxInterleaveGroupSize, rawRTPSource);
+  if (deinterleaver == NULL) {
+    Medium::close(resultRTPSource);
+    resultRTPSource = NULL;
+  }
+
+  return deinterleaver;
+}
+
+
+////////// AMRBufferedPacket and AMRBufferedPacketFactory //////////
+
+// A subclass of BufferedPacket, used to separate out AMR frames.
+
+class AMRBufferedPacket: public BufferedPacket {
+public:
+  AMRBufferedPacket(RawAMRRTPSource& ourSource);
+  virtual ~AMRBufferedPacket();
+
+private: // redefined virtual functions
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+					 unsigned dataSize);
+private:
+  RawAMRRTPSource& fOurSource;
+};
+
+class AMRBufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+
+///////// RawAMRRTPSource implementation ////////
+
+RawAMRRTPSource*
+RawAMRRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			   unsigned char rtpPayloadFormat,
+			   Boolean isWideband, Boolean isOctetAligned,
+			   Boolean isInterleaved, Boolean CRCsArePresent) {
+  return new RawAMRRTPSource(env, RTPgs, rtpPayloadFormat,
+			     isWideband, isOctetAligned,
+			     isInterleaved, CRCsArePresent);
+}
+
+RawAMRRTPSource
+::RawAMRRTPSource(UsageEnvironment& env,
+		  Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+		  Boolean isWideband, Boolean isOctetAligned,
+		  Boolean isInterleaved, Boolean CRCsArePresent)
+  : MultiFramedRTPSource(env, RTPgs, rtpPayloadFormat,
+			 isWideband ? 16000 : 8000,
+                         new AMRBufferedPacketFactory),
+  fIsWideband(isWideband), fIsOctetAligned(isOctetAligned),
+  fIsInterleaved(isInterleaved), fCRCsArePresent(CRCsArePresent),
+  fILL(0), fILP(0), fTOCSize(0), fTOC(NULL), fFrameIndex(0), fIsSynchronized(False) {
+}
+
+RawAMRRTPSource::~RawAMRRTPSource() {
+  delete[] fTOC;
+}
+
+#define FT_SPEECH_LOST 14
+#define FT_NO_DATA 15
+
+static void unpackBandwidthEfficientData(BufferedPacket* packet,
+					 Boolean isWideband); // forward
+
+Boolean RawAMRRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  // If the data is 'bandwidth-efficient', first unpack it so that it's
+  // 'octet-aligned':
+  if (!fIsOctetAligned) unpackBandwidthEfficientData(packet, fIsWideband);
+
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  // There's at least a 1-byte header, containing the CMR:
+  if (packetSize < 1) return False;
+  resultSpecialHeaderSize = 1;
+
+  if (fIsInterleaved) {
+    // There's an extra byte, containing the interleave parameters:
+    if (packetSize < 2) return False;
+
+    // Get the interleaving parameters, and check them for validity:
+    unsigned char const secondByte = headerStart[1];
+    fILL = (secondByte&0xF0)>>4;
+    fILP = secondByte&0x0F;
+    if (fILP > fILL) return False; // invalid
+    ++resultSpecialHeaderSize;
+  }
+#ifdef DEBUG
+  fprintf(stderr, "packetSize: %d, ILL: %d, ILP: %d\n", packetSize, fILL, fILP);
+#endif
+  fFrameIndex = 0; // initially
+
+  // Next, there's a "Payload Table of Contents" (one byte per entry):
+  unsigned numFramesPresent = 0, numNonEmptyFramesPresent = 0;
+  unsigned tocStartIndex = resultSpecialHeaderSize;
+  Boolean F;
+  do {
+    if (resultSpecialHeaderSize >= packetSize) return False;
+    unsigned char const tocByte = headerStart[resultSpecialHeaderSize++];
+    F = (tocByte&0x80) != 0;
+    unsigned char const FT = (tocByte&0x78) >> 3;
+#ifdef DEBUG
+    unsigned char Q = (tocByte&0x04)>>2;
+    fprintf(stderr, "\tTOC entry: F %d, FT %d, Q %d\n", F, FT, Q);
+#endif
+    ++numFramesPresent;
+    if (FT != FT_SPEECH_LOST && FT != FT_NO_DATA) ++numNonEmptyFramesPresent;
+  } while (F);
+#ifdef DEBUG
+  fprintf(stderr, "TOC contains %d entries (%d non-empty)\n", numFramesPresent, numNonEmptyFramesPresent);
+#endif
+
+  // Now that we know the size of the TOC, fill in our copy:
+  if (numFramesPresent > fTOCSize) {
+    delete[] fTOC;
+    fTOC = new unsigned char[numFramesPresent];
+  }
+  fTOCSize = numFramesPresent;
+  for (unsigned i = 0; i < fTOCSize; ++i) {
+    unsigned char const tocByte = headerStart[tocStartIndex + i];
+    fTOC[i] = tocByte&0x7C; // clear everything except the F and Q fields
+  }
+
+  if (fCRCsArePresent) {
+    // 'numNonEmptyFramesPresent' CRC bytes will follow.
+    // Note: we currently don't check the CRCs for validity #####
+    resultSpecialHeaderSize += numNonEmptyFramesPresent;
+#ifdef DEBUG
+    fprintf(stderr, "Ignoring %d following CRC bytes\n", numNonEmptyFramesPresent);
+#endif
+    if (resultSpecialHeaderSize > packetSize) return False;
+  }
+#ifdef DEBUG
+  fprintf(stderr, "Total special header size: %d\n", resultSpecialHeaderSize);
+#endif
+
+  return True;
+}
+
+char const* RawAMRRTPSource::MIMEtype() const {
+  return fIsWideband ? "audio/AMR-WB" : "audio/AMR";
+}
+
+Boolean RawAMRRTPSource::hasBeenSynchronizedUsingRTCP() {
+  return fIsSynchronized;
+}
+
+
+///// AMRBufferedPacket and AMRBufferedPacketFactory implementation
+
+AMRBufferedPacket::AMRBufferedPacket(RawAMRRTPSource& ourSource)
+  : fOurSource(ourSource) {
+}
+
+AMRBufferedPacket::~AMRBufferedPacket() {
+}
+
+// The mapping from the "FT" field to frame size.
+// Values of 65535 are invalid.
+#define FT_INVALID 65535
+static unsigned short const frameBytesFromFT[16] = {
+  12, 13, 15, 17,
+  19, 20, 26, 31,
+  5, FT_INVALID, FT_INVALID, FT_INVALID,
+  FT_INVALID, FT_INVALID, FT_INVALID, 0
+};
+static unsigned short const frameBytesFromFTWideband[16] = {
+  17, 23, 32, 36,
+  40, 46, 50, 58,
+  60, 5, FT_INVALID, FT_INVALID,
+  FT_INVALID, FT_INVALID, 0, 0
+};
+
+unsigned AMRBufferedPacket::
+  nextEnclosedFrameSize(unsigned char*& framePtr, unsigned dataSize) {
+  if (dataSize == 0) return 0; // sanity check
+
+  // The size of the AMR frame is determined by the corresponding 'FT' value
+  // in the packet's Table of Contents.
+  unsigned const tocIndex = fOurSource.frameIndex();
+  if (tocIndex >= fOurSource.TOCSize()) return 0; // sanity check
+
+  unsigned char const tocByte = fOurSource.TOC()[tocIndex];
+  unsigned char const FT = (tocByte&0x78) >> 3;
+  // ASSERT: FT < 16
+  unsigned short frameSize
+    = fOurSource.isWideband() ? frameBytesFromFTWideband[FT] : frameBytesFromFT[FT];
+  if (frameSize == FT_INVALID) {
+    // Strange TOC entry!
+    fOurSource.envir() << "AMRBufferedPacket::nextEnclosedFrameSize(): invalid FT: " << FT << "\n";
+    frameSize = 0; // This probably messes up the rest of this packet, but...
+  }
+#ifdef DEBUG
+  fprintf(stderr, "AMRBufferedPacket::nextEnclosedFrameSize(): frame #: %d, FT: %d, isWideband: %d => frameSize: %d (dataSize: %d)\n", tocIndex, FT, fOurSource.isWideband(), frameSize, dataSize);
+#endif
+  ++fOurSource.frameIndex();
+
+  if (dataSize < frameSize) return 0;
+  return frameSize;
+}
+
+BufferedPacket* AMRBufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* ourSource) {
+  return new AMRBufferedPacket((RawAMRRTPSource&)(*ourSource));
+}
+
+///////// AMRDeinterleavingBuffer /////////
+// (used to implement AMRDeinterleaver)
+
+#define AMR_MAX_FRAME_SIZE 60
+
+class AMRDeinterleavingBuffer {
+public:
+  AMRDeinterleavingBuffer(unsigned numChannels, unsigned maxInterleaveGroupSize);
+  virtual ~AMRDeinterleavingBuffer();
+
+  void deliverIncomingFrame(unsigned frameSize, RawAMRRTPSource* source,
+			    struct timeval presentationTime);
+  Boolean retrieveFrame(unsigned char* to, unsigned maxSize,
+			unsigned& resultFrameSize, unsigned& resultNumTruncatedBytes,
+			u_int8_t& resultFrameHeader,
+			struct timeval& resultPresentationTime,
+			Boolean& resultIsSynchronized);
+
+  unsigned char* inputBuffer() { return fInputBuffer; }
+  unsigned inputBufferSize() const { return AMR_MAX_FRAME_SIZE; }
+
+private:
+  unsigned char* createNewBuffer();
+
+  class FrameDescriptor {
+  public:
+    FrameDescriptor();
+    virtual ~FrameDescriptor();
+
+    unsigned frameSize;
+    unsigned char* frameData;
+    u_int8_t frameHeader;
+    struct timeval presentationTime;
+    Boolean fIsSynchronized;
+  };
+
+  unsigned fNumChannels, fMaxInterleaveGroupSize;
+  FrameDescriptor* fFrames[2];
+  unsigned char fIncomingBankId; // toggles between 0 and 1
+  unsigned char fIncomingBinMax; // in the incoming bank
+  unsigned char fOutgoingBinMax; // in the outgoing bank
+  unsigned char fNextOutgoingBin;
+  Boolean fHaveSeenPackets;
+  u_int16_t fLastPacketSeqNumForGroup;
+  unsigned char* fInputBuffer;
+  struct timeval fLastRetrievedPresentationTime;
+  unsigned fNumSuccessiveSyncedFrames;
+  unsigned char fILL;
+};
+
+
+////////// AMRDeinterleaver implementation /////////
+
+AMRDeinterleaver* AMRDeinterleaver
+::createNew(UsageEnvironment& env,
+	    Boolean isWideband, unsigned numChannels, unsigned maxInterleaveGroupSize,
+	    RawAMRRTPSource* inputSource) {
+  return new AMRDeinterleaver(env, isWideband, numChannels, maxInterleaveGroupSize, inputSource);
+}
+
+AMRDeinterleaver::AMRDeinterleaver(UsageEnvironment& env,
+				   Boolean isWideband, unsigned numChannels,
+				   unsigned maxInterleaveGroupSize,
+				   RawAMRRTPSource* inputSource)
+  : AMRAudioSource(env, isWideband, numChannels),
+    fInputSource(inputSource), fNeedAFrame(False) {
+  fDeinterleavingBuffer
+    = new AMRDeinterleavingBuffer(numChannels, maxInterleaveGroupSize);
+}
+
+AMRDeinterleaver::~AMRDeinterleaver() {
+  delete fDeinterleavingBuffer;
+  Medium::close(fInputSource);
+}
+
+static unsigned const uSecsPerFrame = 20000; // 20 ms
+
+void AMRDeinterleaver::doGetNextFrame() {
+  // First, try getting a frame from the deinterleaving buffer:
+  if (fDeinterleavingBuffer->retrieveFrame(fTo, fMaxSize,
+					   fFrameSize, fNumTruncatedBytes,
+					   fLastFrameHeader, fPresentationTime,
+					   fInputSource->isSynchronized())) {
+
+    // Success!
+    fNeedAFrame = False;
+
+    fDurationInMicroseconds = uSecsPerFrame;
+
+    // Call our own 'after getting' function.  Because we're not a 'leaf'
+    // source, we can call this directly, without risking
+    // infinite recursion
+    afterGetting(this);
+    return;
+  }
+
+  // No luck, so ask our source for help:
+  fNeedAFrame = True;
+  if (!fInputSource->isCurrentlyAwaitingData()) {
+    fInputSource->getNextFrame(fDeinterleavingBuffer->inputBuffer(),
+			       fDeinterleavingBuffer->inputBufferSize(),
+			       afterGettingFrame, this,
+			       FramedSource::handleClosure, this);
+  }
+}
+
+void AMRDeinterleaver::doStopGettingFrames() {
+  fNeedAFrame = False;
+  fInputSource->stopGettingFrames();
+}
+
+void AMRDeinterleaver
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned /*numTruncatedBytes*/,
+		    struct timeval presentationTime,
+		    unsigned /*durationInMicroseconds*/) {
+  AMRDeinterleaver* deinterleaver = (AMRDeinterleaver*)clientData;
+  deinterleaver->afterGettingFrame1(frameSize, presentationTime);
+}
+
+void AMRDeinterleaver
+::afterGettingFrame1(unsigned frameSize, struct timeval presentationTime) {
+  RawAMRRTPSource* source = (RawAMRRTPSource*)fInputSource;
+
+  // First, put the frame into our deinterleaving buffer:
+  fDeinterleavingBuffer->deliverIncomingFrame(frameSize, source, presentationTime);
+
+  // Then, try delivering a frame to the client (if he wants one):
+  if (fNeedAFrame) doGetNextFrame();
+}
+
+
+////////// AMRDeinterleavingBuffer implementation /////////
+
+AMRDeinterleavingBuffer
+::AMRDeinterleavingBuffer(unsigned numChannels, unsigned maxInterleaveGroupSize)
+  : fNumChannels(numChannels), fMaxInterleaveGroupSize(maxInterleaveGroupSize),
+    fIncomingBankId(0), fIncomingBinMax(0),
+    fOutgoingBinMax(0), fNextOutgoingBin(0),
+    fHaveSeenPackets(False), fNumSuccessiveSyncedFrames(0), fILL(0) {
+  // Use two banks of descriptors - one for incoming, one for outgoing
+  fFrames[0] = new FrameDescriptor[fMaxInterleaveGroupSize];
+  fFrames[1] = new FrameDescriptor[fMaxInterleaveGroupSize];
+  fInputBuffer = createNewBuffer();
+}
+
+AMRDeinterleavingBuffer::~AMRDeinterleavingBuffer() {
+  delete[] fInputBuffer;
+  delete[] fFrames[0]; delete[] fFrames[1];
+}
+
+void AMRDeinterleavingBuffer
+::deliverIncomingFrame(unsigned frameSize, RawAMRRTPSource* source,
+		       struct timeval presentationTime) {
+  fILL = source->ILL();
+  unsigned char const ILP = source->ILP();
+  unsigned frameIndex = source->frameIndex();
+  unsigned short packetSeqNum = source->curPacketRTPSeqNum();
+
+  // First perform a sanity check on the parameters:
+  // (This is overkill, as the source should have already done this.)
+  if (ILP > fILL || frameIndex == 0) {
+#ifdef DEBUG
+    fprintf(stderr, "AMRDeinterleavingBuffer::deliverIncomingFrame() param sanity check failed (%d,%d,%d,%d)\n", frameSize, fILL, ILP, frameIndex);
+#endif
+    source->envir().internalError();
+  }
+
+  --frameIndex; // because it was incremented by the source when this frame was read
+  u_int8_t frameHeader;
+  if (frameIndex >= source->TOCSize()) { // sanity check
+    frameHeader = FT_NO_DATA<<3;
+  } else {
+    frameHeader = source->TOC()[frameIndex];
+  }
+
+  unsigned frameBlockIndex = frameIndex/fNumChannels;
+  unsigned frameWithinFrameBlock = frameIndex%fNumChannels;
+
+  // The input "presentationTime" was that of the first frame-block in this
+  // packet.  Update it for the current frame:
+  unsigned uSecIncrement = frameBlockIndex*(fILL+1)*uSecsPerFrame;
+  presentationTime.tv_usec += uSecIncrement;
+  presentationTime.tv_sec += presentationTime.tv_usec/1000000;
+  presentationTime.tv_usec = presentationTime.tv_usec%1000000;
+
+  // Next, check whether this packet is part of a new interleave group
+  if (!fHaveSeenPackets
+      || seqNumLT(fLastPacketSeqNumForGroup, packetSeqNum + frameBlockIndex)) {
+    // We've moved to a new interleave group
+#ifdef DEBUG
+    fprintf(stderr, "AMRDeinterleavingBuffer::deliverIncomingFrame(): new interleave group\n");
+#endif
+    fHaveSeenPackets = True;
+    fLastPacketSeqNumForGroup = packetSeqNum + fILL - ILP;
+
+    // Switch the incoming and outgoing banks:
+    fIncomingBankId ^= 1;
+    unsigned char tmp = fIncomingBinMax;
+    fIncomingBinMax = fOutgoingBinMax;
+    fOutgoingBinMax = tmp;
+    fNextOutgoingBin = 0;
+  }
+
+  // Now move the incoming frame into the appropriate bin:
+  unsigned const binNumber
+    = ((ILP + frameBlockIndex*(fILL+1))*fNumChannels + frameWithinFrameBlock)
+      % fMaxInterleaveGroupSize; // the % is for sanity
+#ifdef DEBUG
+  fprintf(stderr, "AMRDeinterleavingBuffer::deliverIncomingFrame(): frameIndex %d (%d,%d) put in bank %d, bin %d (%d): size %d, header 0x%02x, presentationTime %lu.%06ld\n", frameIndex, frameBlockIndex, frameWithinFrameBlock, fIncomingBankId, binNumber, fMaxInterleaveGroupSize, frameSize, frameHeader, presentationTime.tv_sec, presentationTime.tv_usec);
+#endif
+  FrameDescriptor& inBin = fFrames[fIncomingBankId][binNumber];
+  unsigned char* curBuffer = inBin.frameData;
+  inBin.frameData = fInputBuffer;
+  inBin.frameSize = frameSize;
+  inBin.frameHeader = frameHeader;
+  inBin.presentationTime = presentationTime;
+  inBin.fIsSynchronized = ((RTPSource*)source)->RTPSource::hasBeenSynchronizedUsingRTCP();
+
+  if (curBuffer == NULL) curBuffer = createNewBuffer();
+  fInputBuffer = curBuffer;
+
+  if (binNumber >= fIncomingBinMax) {
+    fIncomingBinMax = binNumber + 1;
+  }
+}
+
+Boolean AMRDeinterleavingBuffer
+::retrieveFrame(unsigned char* to, unsigned maxSize,
+		unsigned& resultFrameSize, unsigned& resultNumTruncatedBytes,
+		u_int8_t& resultFrameHeader,
+		struct timeval& resultPresentationTime,
+		Boolean& resultIsSynchronized) {
+
+  if (fNextOutgoingBin >= fOutgoingBinMax) return False; // none left
+
+  FrameDescriptor& outBin = fFrames[fIncomingBankId^1][fNextOutgoingBin];
+  unsigned char* fromPtr = outBin.frameData;
+  unsigned char fromSize = outBin.frameSize;
+  outBin.frameSize = 0; // for the next time this bin is used
+  resultIsSynchronized = False; // by default; can be changed by:
+  if (outBin.fIsSynchronized) {
+    // Don't consider the outgoing frame to be synchronized until we've received at least a complete interleave cycle of
+    // synchronized frames.  This ensures that the receiver will be getting all synchronized frames from now on.
+    if (++fNumSuccessiveSyncedFrames > fILL) {
+      resultIsSynchronized = True;
+      fNumSuccessiveSyncedFrames = fILL+1; // prevents overflow
+    }
+  } else {
+    fNumSuccessiveSyncedFrames = 0;
+  } 
+
+  // Check whether this frame is missing; if so, return a FT_NO_DATA frame:
+  if (fromSize == 0) {
+    resultFrameHeader = FT_NO_DATA<<3;
+
+    // Compute this erasure frame's presentation time via extrapolation:
+    resultPresentationTime = fLastRetrievedPresentationTime;
+    resultPresentationTime.tv_usec += uSecsPerFrame;
+    if (resultPresentationTime.tv_usec >= 1000000) {
+      ++resultPresentationTime.tv_sec;
+      resultPresentationTime.tv_usec -= 1000000;
+    }
+  } else {
+    // Normal case - a frame exists:
+    resultFrameHeader = outBin.frameHeader;
+    resultPresentationTime = outBin.presentationTime;
+  }
+
+  fLastRetrievedPresentationTime = resultPresentationTime;
+
+  if (fromSize > maxSize) {
+    resultNumTruncatedBytes = fromSize - maxSize;
+    resultFrameSize = maxSize;
+  } else {
+    resultNumTruncatedBytes = 0;
+    resultFrameSize = fromSize;
+  }
+  memmove(to, fromPtr, resultFrameSize);
+#ifdef DEBUG
+  fprintf(stderr, "AMRDeinterleavingBuffer::retrieveFrame(): from bank %d, bin %d: size %d, header 0x%02x, presentationTime %lu.%06ld\n", fIncomingBankId^1, fNextOutgoingBin, resultFrameSize, resultFrameHeader, resultPresentationTime.tv_sec, resultPresentationTime.tv_usec);
+#endif
+
+  ++fNextOutgoingBin;
+  return True;
+}
+
+unsigned char* AMRDeinterleavingBuffer::createNewBuffer() {
+  return new unsigned char[inputBufferSize()];
+}
+
+AMRDeinterleavingBuffer::FrameDescriptor::FrameDescriptor()
+  : frameSize(0), frameData(NULL) {
+}
+
+AMRDeinterleavingBuffer::FrameDescriptor::~FrameDescriptor() {
+  delete[] frameData;
+}
+
+// Unpack bandwidth-aligned data to octet-aligned:
+static unsigned short const frameBitsFromFT[16] = {
+  95, 103, 118, 134,
+  148, 159, 204, 244,
+  39, 0, 0, 0,
+  0, 0, 0, 0
+};
+static unsigned short const frameBitsFromFTWideband[16] = {
+  132, 177, 253, 285,
+  317, 365, 397, 461,
+  477, 40, 0, 0,
+  0, 0, 0, 0
+};
+
+static void unpackBandwidthEfficientData(BufferedPacket* packet,
+					 Boolean isWideband) {
+#ifdef DEBUG
+  fprintf(stderr, "Unpacking 'bandwidth-efficient' payload (%d bytes):\n", packet->dataSize());
+  for (unsigned j = 0; j < packet->dataSize(); ++j) {
+    fprintf(stderr, "%02x:", (packet->data())[j]);
+  }
+  fprintf(stderr, "\n");
+#endif
+  BitVector fromBV(packet->data(), 0, 8*packet->dataSize());
+
+  unsigned const toBufferSize = 2*packet->dataSize(); // conservatively large
+  unsigned char* toBuffer = new unsigned char[toBufferSize];
+  unsigned toCount = 0;
+
+  // Begin with the payload header:
+  unsigned CMR = fromBV.getBits(4);
+  toBuffer[toCount++] = CMR << 4;
+
+  // Then, run through and unpack the TOC entries:
+  while (1) {
+    unsigned toc = fromBV.getBits(6);
+    toBuffer[toCount++] = toc << 2;
+
+    if ((toc&0x20) == 0) break; // the F bit is 0
+  }
+
+  // Then, using the TOC data, unpack each frame payload:
+  unsigned const tocSize = toCount - 1;
+  for (unsigned i = 1; i <= tocSize; ++i) {
+    unsigned char tocByte = toBuffer[i];
+    unsigned char const FT = (tocByte&0x78) >> 3;
+    unsigned short frameSizeBits
+      = isWideband ? frameBitsFromFTWideband[FT] : frameBitsFromFT[FT];
+    unsigned short frameSizeBytes = (frameSizeBits+7)/8;
+
+    if (frameSizeBits > fromBV.numBitsRemaining()) {
+#ifdef DEBUG
+      fprintf(stderr, "\tWarning: Unpacking frame %d of %d: want %d bits, but only %d are available!\n", i, tocSize, frameSizeBits, fromBV.numBitsRemaining());
+#endif
+      break;
+    }
+
+    shiftBits(&toBuffer[toCount], 0, // to
+	      packet->data(), fromBV.curBitIndex(), // from
+	      frameSizeBits // num bits
+	      );
+    fromBV.skipBits(frameSizeBits);
+    toCount += frameSizeBytes;
+  }
+
+#ifdef DEBUG
+  if (fromBV.numBitsRemaining() > 7) {
+    fprintf(stderr, "\tWarning: %d bits remain unused!\n", fromBV.numBitsRemaining());
+  }
+#endif
+
+  // Finally, replace the current packet data with the unpacked data:
+  packet->removePadding(packet->dataSize()); // throws away current packet data
+  packet->appendData(toBuffer, toCount);
+  delete[] toBuffer;
+}
diff --git a/liveMedia/AMRAudioSource.cpp b/liveMedia/AMRAudioSource.cpp
new file mode 100644
index 0000000..b5fef8c
--- /dev/null
+++ b/liveMedia/AMRAudioSource.cpp
@@ -0,0 +1,38 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A source object for AMR audio sources
+// Implementation
+
+#include "AMRAudioSource.hh"
+
+AMRAudioSource::AMRAudioSource(UsageEnvironment& env,
+			       Boolean isWideband, unsigned numChannels)
+  : FramedSource(env),
+    fIsWideband(isWideband), fNumChannels(numChannels), fLastFrameHeader(0) {
+}
+
+AMRAudioSource::~AMRAudioSource() {
+}
+
+char const* AMRAudioSource::MIMEtype() const {
+  return "audio/AMR";
+}
+
+Boolean AMRAudioSource::isAMRAudioSource() const {
+  return True;
+}
diff --git a/liveMedia/AVIFileSink.cpp b/liveMedia/AVIFileSink.cpp
new file mode 100644
index 0000000..ec3f041
--- /dev/null
+++ b/liveMedia/AVIFileSink.cpp
@@ -0,0 +1,789 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A sink that generates an AVI file from a composite media session
+// Implementation
+
+#include "AVIFileSink.hh"
+#include "InputFile.hh"
+#include "OutputFile.hh"
+#include "GroupsockHelper.hh"
+
+#define fourChar(x,y,z,w) ( ((w)<<24)|((z)<<16)|((y)<<8)|(x) )/*little-endian*/
+
+#define AVIIF_LIST		0x00000001
+#define AVIIF_KEYFRAME		0x00000010
+#define AVIIF_NO_TIME		0x00000100
+#define AVIIF_COMPRESSOR	0x0FFF0000
+
+////////// AVISubsessionIOState ///////////
+// A structure used to represent the I/O state of each input 'subsession':
+
+class SubsessionBuffer {
+public:
+  SubsessionBuffer(unsigned bufferSize)
+    : fBufferSize(bufferSize) {
+    reset();
+    fData = new unsigned char[bufferSize];
+  }
+  virtual ~SubsessionBuffer() { delete[] fData; }
+  void reset() { fBytesInUse = 0; }
+  void addBytes(unsigned numBytes) { fBytesInUse += numBytes; }
+
+  unsigned char* dataStart() { return &fData[0]; }
+  unsigned char* dataEnd() { return &fData[fBytesInUse]; }
+  unsigned bytesInUse() const { return fBytesInUse; }
+  unsigned bytesAvailable() const { return fBufferSize - fBytesInUse; }
+
+  void setPresentationTime(struct timeval const& presentationTime) {
+    fPresentationTime = presentationTime;
+  }
+  struct timeval const& presentationTime() const {return fPresentationTime;}
+
+private:
+  unsigned fBufferSize;
+  struct timeval fPresentationTime;
+  unsigned char* fData;
+  unsigned fBytesInUse;
+};
+
+class AVISubsessionIOState {
+public:
+  AVISubsessionIOState(AVIFileSink& sink, MediaSubsession& subsession);
+  virtual ~AVISubsessionIOState();
+
+  void setAVIstate(unsigned subsessionIndex);
+  void setFinalAVIstate();
+
+  void afterGettingFrame(unsigned packetDataSize,
+			 struct timeval presentationTime);
+  void onSourceClosure();
+
+  UsageEnvironment& envir() const { return fOurSink.envir(); }
+
+public:
+  SubsessionBuffer *fBuffer, *fPrevBuffer;
+  AVIFileSink& fOurSink;
+  MediaSubsession& fOurSubsession;
+
+  unsigned short fLastPacketRTPSeqNum;
+  Boolean fOurSourceIsActive;
+  struct timeval fPrevPresentationTime;
+  unsigned fMaxBytesPerSecond;
+  Boolean fIsVideo, fIsAudio, fIsByteSwappedAudio;
+  unsigned fAVISubsessionTag;
+  unsigned fAVICodecHandlerType;
+  unsigned fAVISamplingFrequency; // for audio
+  u_int16_t fWAVCodecTag; // for audio
+  unsigned fAVIScale;
+  unsigned fAVIRate;
+  unsigned fAVISize;
+  unsigned fNumFrames;
+  unsigned fSTRHFrameCountPosition;
+
+private:
+  void useFrame(SubsessionBuffer& buffer);
+};
+
+
+///////// AVIIndexRecord definition & implementation //////////
+
+class AVIIndexRecord {
+public:
+  AVIIndexRecord(unsigned chunkId, unsigned flags, unsigned offset, unsigned size)
+    : fNext(NULL), fChunkId(chunkId), fFlags(flags), fOffset(offset), fSize(size) {
+  }
+
+  AVIIndexRecord*& next() { return fNext; }
+  unsigned chunkId() const { return fChunkId; }
+  unsigned flags() const { return fFlags; }
+  unsigned offset() const { return fOffset; }
+  unsigned size() const { return fSize; }
+
+private:
+  AVIIndexRecord* fNext;
+  unsigned fChunkId;
+  unsigned fFlags;
+  unsigned fOffset;
+  unsigned fSize;
+};
+
+
+////////// AVIFileSink implementation //////////
+
+AVIFileSink::AVIFileSink(UsageEnvironment& env,
+			 MediaSession& inputSession,
+			 char const* outputFileName,
+			 unsigned bufferSize,
+			 unsigned short movieWidth, unsigned short movieHeight,
+			 unsigned movieFPS, Boolean packetLossCompensate)
+  : Medium(env), fInputSession(inputSession),
+    fIndexRecordsHead(NULL), fIndexRecordsTail(NULL), fNumIndexRecords(0),
+    fBufferSize(bufferSize), fPacketLossCompensate(packetLossCompensate),
+    fAreCurrentlyBeingPlayed(False), fNumSubsessions(0), fNumBytesWritten(0),
+    fHaveCompletedOutputFile(False),
+    fMovieWidth(movieWidth), fMovieHeight(movieHeight), fMovieFPS(movieFPS) {
+  fOutFid = OpenOutputFile(env, outputFileName);
+  if (fOutFid == NULL) return;
+
+  // Set up I/O state for each input subsession:
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    // Ignore subsessions without a data source:
+    FramedSource* subsessionSource = subsession->readSource();
+    if (subsessionSource == NULL) continue;
+
+    // If "subsession's" SDP description specified screen dimension
+    // or frame rate parameters, then use these.
+    if (subsession->videoWidth() != 0) {
+      fMovieWidth = subsession->videoWidth();
+    }
+    if (subsession->videoHeight() != 0) {
+      fMovieHeight = subsession->videoHeight();
+    }
+    if (subsession->videoFPS() != 0) {
+      fMovieFPS = subsession->videoFPS();
+    }
+
+    AVISubsessionIOState* ioState
+      = new AVISubsessionIOState(*this, *subsession);
+    subsession->miscPtr = (void*)ioState;
+
+    // Also set a 'BYE' handler for this subsession's RTCP instance:
+    if (subsession->rtcpInstance() != NULL) {
+      subsession->rtcpInstance()->setByeHandler(onRTCPBye, ioState);
+    }
+
+    ++fNumSubsessions;
+  }
+
+  // Begin by writing an AVI header:
+  addFileHeader_AVI();
+}
+
+AVIFileSink::~AVIFileSink() {
+  completeOutputFile();
+
+  // Then, stop streaming and delete each active "AVISubsessionIOState":
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    if (subsession->readSource() != NULL) subsession->readSource()->stopGettingFrames();
+
+    AVISubsessionIOState* ioState
+      = (AVISubsessionIOState*)(subsession->miscPtr);
+    if (ioState == NULL) continue;
+
+    delete ioState;
+  }
+
+  // Then, delete the index records:
+  AVIIndexRecord* cur = fIndexRecordsHead;
+  while (cur != NULL) {
+    AVIIndexRecord* next = cur->next();
+    delete cur;
+    cur = next;
+  }
+
+  // Finally, close our output file:
+  CloseOutputFile(fOutFid);
+}
+
+AVIFileSink* AVIFileSink
+::createNew(UsageEnvironment& env, MediaSession& inputSession,
+	    char const* outputFileName,
+	    unsigned bufferSize,
+	    unsigned short movieWidth, unsigned short movieHeight,
+	    unsigned movieFPS, Boolean packetLossCompensate) {
+  AVIFileSink* newSink =
+    new AVIFileSink(env, inputSession, outputFileName, bufferSize,
+		    movieWidth, movieHeight, movieFPS, packetLossCompensate);
+  if (newSink == NULL || newSink->fOutFid == NULL) {
+    Medium::close(newSink);
+    return NULL;
+  }
+
+  return newSink;
+}
+
+Boolean AVIFileSink::startPlaying(afterPlayingFunc* afterFunc,
+				  void* afterClientData) {
+  // Make sure we're not already being played:
+  if (fAreCurrentlyBeingPlayed) {
+    envir().setResultMsg("This sink has already been played");
+    return False;
+  }
+
+  fAreCurrentlyBeingPlayed = True;
+  fAfterFunc = afterFunc;
+  fAfterClientData = afterClientData;
+
+  return continuePlaying();
+}
+
+Boolean AVIFileSink::continuePlaying() {
+  // Run through each of our input session's 'subsessions',
+  // asking for a frame from each one:
+  Boolean haveActiveSubsessions = False;
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    FramedSource* subsessionSource = subsession->readSource();
+    if (subsessionSource == NULL) continue;
+
+    if (subsessionSource->isCurrentlyAwaitingData()) continue;
+
+    AVISubsessionIOState* ioState
+      = (AVISubsessionIOState*)(subsession->miscPtr);
+    if (ioState == NULL) continue;
+
+    haveActiveSubsessions = True;
+    unsigned char* toPtr = ioState->fBuffer->dataEnd();
+    unsigned toSize = ioState->fBuffer->bytesAvailable();
+    subsessionSource->getNextFrame(toPtr, toSize,
+				   afterGettingFrame, ioState,
+				   onSourceClosure, ioState);
+  }
+  if (!haveActiveSubsessions) {
+    envir().setResultMsg("No subsessions are currently active");
+    return False;
+  }
+
+  return True;
+}
+
+void AVIFileSink
+::afterGettingFrame(void* clientData, unsigned packetDataSize,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned /*durationInMicroseconds*/) {
+  AVISubsessionIOState* ioState = (AVISubsessionIOState*)clientData;
+  if (numTruncatedBytes > 0) {
+    ioState->envir() << "AVIFileSink::afterGettingFrame(): The input frame data was too large for our buffer.  "
+		     << numTruncatedBytes
+		     << " bytes of trailing data was dropped!  Correct this by increasing the \"bufferSize\" parameter in the \"createNew()\" call.\n";
+  }
+  ioState->afterGettingFrame(packetDataSize, presentationTime);
+}
+
+void AVIFileSink::onSourceClosure(void* clientData) {
+  AVISubsessionIOState* ioState = (AVISubsessionIOState*)clientData;
+  ioState->onSourceClosure();
+}
+
+void AVIFileSink::onSourceClosure1() {
+  // Check whether *all* of the subsession sources have closed.
+  // If not, do nothing for now:
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    AVISubsessionIOState* ioState
+      = (AVISubsessionIOState*)(subsession->miscPtr);
+    if (ioState == NULL) continue;
+
+    if (ioState->fOurSourceIsActive) return; // this source hasn't closed
+  }
+
+  completeOutputFile();
+
+  // Call our specified 'after' function:
+  if (fAfterFunc != NULL) {
+    (*fAfterFunc)(fAfterClientData);
+  }
+}
+
+void AVIFileSink::onRTCPBye(void* clientData) {
+  AVISubsessionIOState* ioState = (AVISubsessionIOState*)clientData;
+
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+  unsigned secsDiff
+    = timeNow.tv_sec - ioState->fOurSink.fStartTime.tv_sec;
+
+  MediaSubsession& subsession = ioState->fOurSubsession;
+  ioState->envir() << "Received RTCP \"BYE\" on \""
+		   << subsession.mediumName()
+		   << "/" << subsession.codecName()
+		   << "\" subsession (after "
+		   << secsDiff << " seconds)\n";
+
+  // Handle the reception of a RTCP "BYE" as if the source had closed:
+  ioState->onSourceClosure();
+}
+
+void AVIFileSink::addIndexRecord(AVIIndexRecord* newIndexRecord) {
+  if (fIndexRecordsHead == NULL) {
+    fIndexRecordsHead = newIndexRecord;
+  } else {
+    fIndexRecordsTail->next() = newIndexRecord;
+  }
+  fIndexRecordsTail = newIndexRecord;
+  ++fNumIndexRecords;
+}
+
+void AVIFileSink::completeOutputFile() {
+  if (fHaveCompletedOutputFile || fOutFid == NULL) return;
+
+  // Update various AVI 'size' fields to take account of the codec data that
+  // we've now written to the file:
+  unsigned maxBytesPerSecond = 0;
+  unsigned numVideoFrames = 0;
+  unsigned numAudioFrames = 0;
+
+  //// Subsession-specific fields:
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    AVISubsessionIOState* ioState
+      = (AVISubsessionIOState*)(subsession->miscPtr);
+    if (ioState == NULL) continue;
+
+    maxBytesPerSecond += ioState->fMaxBytesPerSecond;
+
+    setWord(ioState->fSTRHFrameCountPosition, ioState->fNumFrames);
+    if (ioState->fIsVideo) numVideoFrames = ioState->fNumFrames;
+    else if (ioState->fIsAudio) numAudioFrames = ioState->fNumFrames;
+  }
+
+  //// Global fields:
+  add4ByteString("idx1");
+  addWord(fNumIndexRecords*4*4); // the size of all of the index records, which come next:
+  for (AVIIndexRecord* indexRecord = fIndexRecordsHead; indexRecord != NULL; indexRecord = indexRecord->next()) {
+    addWord(indexRecord->chunkId());
+    addWord(indexRecord->flags());
+    addWord(indexRecord->offset());
+    addWord(indexRecord->size());
+  }
+
+  fRIFFSizeValue += fNumBytesWritten + fNumIndexRecords*4*4 - 4;
+  setWord(fRIFFSizePosition, fRIFFSizeValue);
+
+  setWord(fAVIHMaxBytesPerSecondPosition, maxBytesPerSecond);
+  setWord(fAVIHFrameCountPosition,
+	  numVideoFrames > 0 ? numVideoFrames : numAudioFrames);
+
+  fMoviSizeValue += fNumBytesWritten;
+  setWord(fMoviSizePosition, fMoviSizeValue);
+
+  // We're done:
+  fHaveCompletedOutputFile = True;
+}
+
+
+////////// AVISubsessionIOState implementation ///////////
+
+AVISubsessionIOState::AVISubsessionIOState(AVIFileSink& sink,
+				     MediaSubsession& subsession)
+  : fOurSink(sink), fOurSubsession(subsession),
+    fMaxBytesPerSecond(0), fIsVideo(False), fIsAudio(False), fIsByteSwappedAudio(False), fNumFrames(0) {
+  fBuffer = new SubsessionBuffer(fOurSink.fBufferSize);
+  fPrevBuffer = sink.fPacketLossCompensate
+    ? new SubsessionBuffer(fOurSink.fBufferSize) : NULL;
+
+  FramedSource* subsessionSource = subsession.readSource();
+  fOurSourceIsActive = subsessionSource != NULL;
+
+  fPrevPresentationTime.tv_sec = 0;
+  fPrevPresentationTime.tv_usec = 0;
+}
+
+AVISubsessionIOState::~AVISubsessionIOState() {
+  delete fBuffer; delete fPrevBuffer;
+}
+
+void AVISubsessionIOState::setAVIstate(unsigned subsessionIndex) {
+  fIsVideo = strcmp(fOurSubsession.mediumName(), "video") == 0;
+  fIsAudio = strcmp(fOurSubsession.mediumName(), "audio") == 0;
+
+  if (fIsVideo) {
+    fAVISubsessionTag
+      = fourChar('0'+subsessionIndex/10,'0'+subsessionIndex%10,'d','c');
+    if (strcmp(fOurSubsession.codecName(), "JPEG") == 0) {
+      fAVICodecHandlerType = fourChar('m','j','p','g');
+    } else if (strcmp(fOurSubsession.codecName(), "MP4V-ES") == 0) {
+      fAVICodecHandlerType = fourChar('D','I','V','X');
+    } else if (strcmp(fOurSubsession.codecName(), "MPV") == 0) {
+      fAVICodecHandlerType = fourChar('m','p','g','1'); // what about MPEG-2?
+    } else if (strcmp(fOurSubsession.codecName(), "H263-1998") == 0 ||
+	       strcmp(fOurSubsession.codecName(), "H263-2000") == 0) {
+      fAVICodecHandlerType = fourChar('H','2','6','3');
+    } else if (strcmp(fOurSubsession.codecName(), "H264") == 0) {
+      fAVICodecHandlerType = fourChar('H','2','6','4');
+    } else {
+      fAVICodecHandlerType = fourChar('?','?','?','?');
+    }
+    fAVIScale = 1; // ??? #####
+    fAVIRate = fOurSink.fMovieFPS; // ??? #####
+    fAVISize = fOurSink.fMovieWidth*fOurSink.fMovieHeight*3; // ??? #####
+  } else if (fIsAudio) {
+    fIsByteSwappedAudio = False; // by default
+    fAVISubsessionTag
+      = fourChar('0'+subsessionIndex/10,'0'+subsessionIndex%10,'w','b');
+    fAVICodecHandlerType = 1; // ??? ####
+    unsigned numChannels = fOurSubsession.numChannels();
+    fAVISamplingFrequency = fOurSubsession.rtpTimestampFrequency(); // default
+    if (strcmp(fOurSubsession.codecName(), "L16") == 0) {
+      fIsByteSwappedAudio = True; // need to byte-swap data before writing it
+      fWAVCodecTag = 0x0001;
+      fAVIScale = fAVISize = 2*numChannels; // 2 bytes/sample
+      fAVIRate = fAVISize*fAVISamplingFrequency;
+    } else if (strcmp(fOurSubsession.codecName(), "L8") == 0) {
+      fWAVCodecTag = 0x0001;
+      fAVIScale = fAVISize = numChannels; // 1 byte/sample
+      fAVIRate = fAVISize*fAVISamplingFrequency;
+    } else if (strcmp(fOurSubsession.codecName(), "PCMA") == 0) {
+      fWAVCodecTag = 0x0006;
+      fAVIScale = fAVISize = numChannels; // 1 byte/sample
+      fAVIRate = fAVISize*fAVISamplingFrequency;
+    } else if (strcmp(fOurSubsession.codecName(), "PCMU") == 0) {
+      fWAVCodecTag = 0x0007;
+      fAVIScale = fAVISize = numChannels; // 1 byte/sample
+      fAVIRate = fAVISize*fAVISamplingFrequency;
+    } else if (strcmp(fOurSubsession.codecName(), "MPA") == 0) {
+      fWAVCodecTag = 0x0050;
+      fAVIScale = fAVISize = 1;
+      fAVIRate = 0; // ??? #####
+    } else {
+      fWAVCodecTag = 0x0001; // ??? #####
+      fAVIScale = fAVISize = 1;
+      fAVIRate = 0; // ??? #####
+    }
+  } else { // unknown medium
+    fAVISubsessionTag
+      = fourChar('0'+subsessionIndex/10,'0'+subsessionIndex%10,'?','?');
+    fAVICodecHandlerType = 0;
+    fAVIScale = fAVISize = 1;
+    fAVIRate = 0; // ??? #####
+  }
+}
+
+void AVISubsessionIOState::afterGettingFrame(unsigned packetDataSize,
+					  struct timeval presentationTime) {
+  // Begin by checking whether there was a gap in the RTP stream.
+  // If so, try to compensate for this (if desired):
+  unsigned short rtpSeqNum
+    = fOurSubsession.rtpSource()->curPacketRTPSeqNum();
+  if (fOurSink.fPacketLossCompensate && fPrevBuffer->bytesInUse() > 0) {
+    short seqNumGap = rtpSeqNum - fLastPacketRTPSeqNum;
+    for (short i = 1; i < seqNumGap; ++i) {
+      // Insert a copy of the previous frame, to compensate for the loss:
+      useFrame(*fPrevBuffer);
+    }
+  }
+  fLastPacketRTPSeqNum = rtpSeqNum;
+
+  // Now, continue working with the frame that we just got
+  if (fBuffer->bytesInUse() == 0) {
+    fBuffer->setPresentationTime(presentationTime);
+  }
+  fBuffer->addBytes(packetDataSize);
+
+  useFrame(*fBuffer);
+  if (fOurSink.fPacketLossCompensate) {
+    // Save this frame, in case we need it for recovery:
+    SubsessionBuffer* tmp = fPrevBuffer; // assert: != NULL
+    fPrevBuffer = fBuffer;
+    fBuffer = tmp;
+  }
+  fBuffer->reset(); // for the next input
+
+  // Now, try getting more frames:
+  fOurSink.continuePlaying();
+}
+
+void AVISubsessionIOState::useFrame(SubsessionBuffer& buffer) {
+  unsigned char* const frameSource = buffer.dataStart();
+  unsigned const frameSize = buffer.bytesInUse();
+  struct timeval const& presentationTime = buffer.presentationTime();
+  if (fPrevPresentationTime.tv_usec != 0||fPrevPresentationTime.tv_sec != 0) {
+    int uSecondsDiff
+      = (presentationTime.tv_sec - fPrevPresentationTime.tv_sec)*1000000
+      + (presentationTime.tv_usec - fPrevPresentationTime.tv_usec);
+    if (uSecondsDiff > 0) {
+      unsigned bytesPerSecond = (unsigned)((frameSize*1000000.0)/uSecondsDiff);
+      if (bytesPerSecond > fMaxBytesPerSecond) {
+	fMaxBytesPerSecond = bytesPerSecond;
+      }
+    }
+  }
+  fPrevPresentationTime = presentationTime;
+
+  if (fIsByteSwappedAudio) {
+    // We need to swap the 16-bit audio samples from big-endian
+    // to little-endian order, before writing them to a file:
+    for (unsigned i = 0; i < frameSize; i += 2) {
+      unsigned char tmp = frameSource[i];
+      frameSource[i] = frameSource[i+1];
+      frameSource[i+1] = tmp;
+    }
+  }
+
+  // Add an index record for this frame:
+  AVIIndexRecord* newIndexRecord
+    = new AVIIndexRecord(fAVISubsessionTag, // chunk id
+			 AVIIF_KEYFRAME, // flags
+			 4 + fOurSink.fNumBytesWritten, // offset (note: 4 == 'movi')
+			 frameSize); // size
+  fOurSink.addIndexRecord(newIndexRecord);
+
+  // Write the data into the file:
+  fOurSink.fNumBytesWritten += fOurSink.addWord(fAVISubsessionTag);
+  if (strcmp(fOurSubsession.codecName(), "H264") == 0) {
+    // Insert a 'start code' (0x00 0x00 0x00 0x01) in front of the frame:
+    fOurSink.fNumBytesWritten += fOurSink.addWord(4+frameSize);
+    fOurSink.fNumBytesWritten += fOurSink.addWord(fourChar(0x00, 0x00, 0x00, 0x01));//add start code
+  } else {
+    fOurSink.fNumBytesWritten += fOurSink.addWord(frameSize);
+  }
+  fwrite(frameSource, 1, frameSize, fOurSink.fOutFid);
+  fOurSink.fNumBytesWritten += frameSize;
+  // Pad to an even length:
+  if (frameSize%2 != 0) fOurSink.fNumBytesWritten += fOurSink.addByte(0);
+
+  ++fNumFrames;
+}
+
+void AVISubsessionIOState::onSourceClosure() {
+  fOurSourceIsActive = False;
+  fOurSink.onSourceClosure1();
+}
+
+
+////////// AVI-specific implementation //////////
+
+unsigned AVIFileSink::addWord(unsigned word) {
+  // Add "word" to the file in little-endian order:
+  addByte(word); addByte(word>>8);
+  addByte(word>>16); addByte(word>>24);
+
+  return 4;
+}
+
+unsigned AVIFileSink::addHalfWord(unsigned short halfWord) {
+  // Add "halfWord" to the file in little-endian order:
+  addByte((unsigned char)halfWord); addByte((unsigned char)(halfWord>>8));
+
+  return 2;
+}
+
+unsigned AVIFileSink::addZeroWords(unsigned numWords) {
+  for (unsigned i = 0; i < numWords; ++i) {
+    addWord(0);
+  }
+
+  return numWords*4;
+}
+
+unsigned AVIFileSink::add4ByteString(char const* str) {
+  addByte(str[0]); addByte(str[1]); addByte(str[2]);
+  addByte(str[3] == '\0' ? ' ' : str[3]); // e.g., for "AVI "
+
+  return 4;
+}
+
+void AVIFileSink::setWord(unsigned filePosn, unsigned size) {
+  do {
+    if (SeekFile64(fOutFid, filePosn, SEEK_SET) < 0) break;
+    addWord(size);
+    if (SeekFile64(fOutFid, 0, SEEK_END) < 0) break; // go back to where we were
+
+    return;
+  } while (0);
+
+  // One of the SeekFile64()s failed, probable because we're not a seekable file
+  envir() << "AVIFileSink::setWord(): SeekFile64 failed (err "
+	  << envir().getErrno() << ")\n";
+}
+
+// Methods for writing particular file headers.  Note the following macros:
+
+#define addFileHeader(tag,name) \
+    unsigned AVIFileSink::addFileHeader_##name() { \
+        add4ByteString("" #tag ""); \
+        unsigned headerSizePosn = (unsigned)TellFile64(fOutFid); addWord(0); \
+        add4ByteString("" #name ""); \
+        unsigned ignoredSize = 8;/*don't include size of tag or size fields*/ \
+        unsigned size = 12
+
+#define addFileHeader1(name) \
+    unsigned AVIFileSink::addFileHeader_##name() { \
+        add4ByteString("" #name ""); \
+        unsigned headerSizePosn = (unsigned)TellFile64(fOutFid); addWord(0); \
+        unsigned ignoredSize = 8;/*don't include size of name or size fields*/ \
+        unsigned size = 8
+
+#define addFileHeaderEnd \
+  setWord(headerSizePosn, size-ignoredSize); \
+  return size; \
+}
+
+addFileHeader(RIFF,AVI);
+    size += addFileHeader_hdrl();
+    size += addFileHeader_movi();
+    fRIFFSizePosition = headerSizePosn;
+    fRIFFSizeValue = size-ignoredSize;
+addFileHeaderEnd;
+
+addFileHeader(LIST,hdrl);
+    size += addFileHeader_avih();
+
+    // Then, add a "strl" header for each subsession (stream):
+    // (Make the video subsession (if any) come before the audio subsession.)
+    unsigned subsessionCount = 0;
+    MediaSubsessionIterator iter(fInputSession);
+    MediaSubsession* subsession;
+    while ((subsession = iter.next()) != NULL) {
+      fCurrentIOState = (AVISubsessionIOState*)(subsession->miscPtr);
+      if (fCurrentIOState == NULL) continue;
+      if (strcmp(subsession->mediumName(), "video") != 0) continue;
+
+      fCurrentIOState->setAVIstate(subsessionCount++);
+      size += addFileHeader_strl();
+    }
+    iter.reset();
+    while ((subsession = iter.next()) != NULL) {
+      fCurrentIOState = (AVISubsessionIOState*)(subsession->miscPtr);
+      if (fCurrentIOState == NULL) continue;
+      if (strcmp(subsession->mediumName(), "video") == 0) continue;
+
+      fCurrentIOState->setAVIstate(subsessionCount++);
+      size += addFileHeader_strl();
+    }
+
+    // Then add another JUNK entry
+    ++fJunkNumber;
+    size += addFileHeader_JUNK();
+addFileHeaderEnd;
+
+#define AVIF_HASINDEX           0x00000010 // Index at end of file?
+#define AVIF_MUSTUSEINDEX       0x00000020
+#define AVIF_ISINTERLEAVED      0x00000100
+#define AVIF_TRUSTCKTYPE        0x00000800 // Use CKType to find key frames?
+#define AVIF_WASCAPTUREFILE     0x00010000
+#define AVIF_COPYRIGHTED        0x00020000
+
+addFileHeader1(avih);
+    unsigned usecPerFrame = fMovieFPS == 0 ? 0 : 1000000/fMovieFPS;
+    size += addWord(usecPerFrame); // dwMicroSecPerFrame
+    fAVIHMaxBytesPerSecondPosition = (unsigned)TellFile64(fOutFid);
+    size += addWord(0); // dwMaxBytesPerSec (fill in later)
+    size += addWord(0); // dwPaddingGranularity
+    size += addWord(AVIF_TRUSTCKTYPE|AVIF_HASINDEX|AVIF_ISINTERLEAVED); // dwFlags
+    fAVIHFrameCountPosition = (unsigned)TellFile64(fOutFid);
+    size += addWord(0); // dwTotalFrames (fill in later)
+    size += addWord(0); // dwInitialFrame
+    size += addWord(fNumSubsessions); // dwStreams
+    size += addWord(fBufferSize); // dwSuggestedBufferSize
+    size += addWord(fMovieWidth); // dwWidth
+    size += addWord(fMovieHeight); // dwHeight
+    size += addZeroWords(4); // dwReserved
+addFileHeaderEnd;
+
+addFileHeader(LIST,strl);
+    size += addFileHeader_strh();
+    size += addFileHeader_strf();
+    fJunkNumber = 0;
+    size += addFileHeader_JUNK();
+addFileHeaderEnd;
+
+addFileHeader1(strh);
+    size += add4ByteString(fCurrentIOState->fIsVideo ? "vids" :
+			   fCurrentIOState->fIsAudio ? "auds" :
+			   "????"); // fccType
+    size += addWord(fCurrentIOState->fAVICodecHandlerType); // fccHandler
+    size += addWord(0); // dwFlags
+    size += addWord(0); // wPriority + wLanguage
+    size += addWord(0); // dwInitialFrames
+    size += addWord(fCurrentIOState->fAVIScale); // dwScale
+    size += addWord(fCurrentIOState->fAVIRate); // dwRate
+    size += addWord(0); // dwStart
+    fCurrentIOState->fSTRHFrameCountPosition = (unsigned)TellFile64(fOutFid);
+    size += addWord(0); // dwLength (fill in later)
+    size += addWord(fBufferSize); // dwSuggestedBufferSize
+    size += addWord((unsigned)-1); // dwQuality
+    size += addWord(fCurrentIOState->fAVISize); // dwSampleSize
+    size += addWord(0); // rcFrame (start)
+    if (fCurrentIOState->fIsVideo) {
+        size += addHalfWord(fMovieWidth);
+        size += addHalfWord(fMovieHeight);
+    } else {
+        size += addWord(0);
+    }
+addFileHeaderEnd;
+
+addFileHeader1(strf);
+    if (fCurrentIOState->fIsVideo) {
+      // Add a BITMAPINFO header:
+      unsigned extraDataSize = 0;
+      size += addWord(10*4 + extraDataSize); // size
+      size += addWord(fMovieWidth);
+      size += addWord(fMovieHeight);
+      size += addHalfWord(1); // planes
+      size += addHalfWord(24); // bits-per-sample #####
+      size += addWord(fCurrentIOState->fAVICodecHandlerType); // compr. type
+      size += addWord(fCurrentIOState->fAVISize);
+      size += addZeroWords(4); // ??? #####
+      // Later, add extra data here (if any) #####
+    } else if (fCurrentIOState->fIsAudio) {
+      // Add a WAVFORMATEX header:
+      size += addHalfWord(fCurrentIOState->fWAVCodecTag);
+      unsigned numChannels = fCurrentIOState->fOurSubsession.numChannels();
+      size += addHalfWord(numChannels);
+      size += addWord(fCurrentIOState->fAVISamplingFrequency);
+      size += addWord(fCurrentIOState->fAVIRate); // bytes per second
+      size += addHalfWord(fCurrentIOState->fAVISize); // block alignment
+      unsigned bitsPerSample = (fCurrentIOState->fAVISize*8)/numChannels;
+      size += addHalfWord(bitsPerSample);
+      if (strcmp(fCurrentIOState->fOurSubsession.codecName(), "MPA") == 0) {
+	// Assume MPEG layer II audio (not MP3): #####
+	size += addHalfWord(22); // wav_extra_size
+	size += addHalfWord(2); // fwHeadLayer
+	size += addWord(8*fCurrentIOState->fAVIRate); // dwHeadBitrate #####
+	size += addHalfWord(numChannels == 2 ? 1: 8); // fwHeadMode
+	size += addHalfWord(0); // fwHeadModeExt
+	size += addHalfWord(1); // wHeadEmphasis
+	size += addHalfWord(16); // fwHeadFlags
+	size += addWord(0); // dwPTSLow
+	size += addWord(0); // dwPTSHigh
+      }
+    }
+addFileHeaderEnd;
+
+#define AVI_MASTER_INDEX_SIZE   256
+
+addFileHeader1(JUNK);
+    if (fJunkNumber == 0) {
+      size += addHalfWord(4); // wLongsPerEntry
+      size += addHalfWord(0); // bIndexSubType + bIndexType
+      size += addWord(0); // nEntriesInUse #####
+      size += addWord(fCurrentIOState->fAVISubsessionTag); // dwChunkId
+      size += addZeroWords(2); // dwReserved
+      size += addZeroWords(AVI_MASTER_INDEX_SIZE*4);
+    } else {
+      size += add4ByteString("odml");
+      size += add4ByteString("dmlh");
+      unsigned wtfCount = 248;
+      size += addWord(wtfCount); // ??? #####
+      size += addZeroWords(wtfCount/4);
+    }
+addFileHeaderEnd;
+
+addFileHeader(LIST,movi);
+    fMoviSizePosition = headerSizePosn;
+    fMoviSizeValue = size-ignoredSize;
+addFileHeaderEnd;
diff --git a/liveMedia/AudioInputDevice.cpp b/liveMedia/AudioInputDevice.cpp
new file mode 100644
index 0000000..6946790
--- /dev/null
+++ b/liveMedia/AudioInputDevice.cpp
@@ -0,0 +1,45 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 2001-2003 Live Networks, Inc.  All rights reserved.
+// Generic audio input device (such as a microphone, or an input sound card)
+// Implementation
+
+#include <AudioInputDevice.hh>
+
+AudioInputDevice
+::AudioInputDevice(UsageEnvironment& env, unsigned char bitsPerSample,
+		   unsigned char numChannels,
+		   unsigned samplingFrequency, unsigned granularityInMS)
+  : FramedSource(env), fBitsPerSample(bitsPerSample),
+    fNumChannels(numChannels), fSamplingFrequency(samplingFrequency),
+    fGranularityInMS(granularityInMS) {
+}
+
+AudioInputDevice::~AudioInputDevice() {
+}
+
+char** AudioInputDevice::allowedDeviceNames = NULL;
+
+////////// AudioPortNames implementation //////////
+
+AudioPortNames::AudioPortNames()
+: numPorts(0), portName(NULL) {
+}
+
+AudioPortNames::~AudioPortNames() {
+	for (unsigned i = 0; i < numPorts; ++i) delete portName[i];
+	delete portName;
+}
diff --git a/liveMedia/AudioRTPSink.cpp b/liveMedia/AudioRTPSink.cpp
new file mode 100644
index 0000000..1555360
--- /dev/null
+++ b/liveMedia/AudioRTPSink.cpp
@@ -0,0 +1,37 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic RTP sink for audio codecs (abstract base class)
+// Implementation
+
+#include "AudioRTPSink.hh"
+
+AudioRTPSink::AudioRTPSink(UsageEnvironment& env,
+			   Groupsock* rtpgs, unsigned char rtpPayloadType,
+			   unsigned rtpTimestampFrequency,
+			   char const* rtpPayloadFormatName,
+			   unsigned numChannels)
+  : MultiFramedRTPSink(env, rtpgs, rtpPayloadType, rtpTimestampFrequency,
+		       rtpPayloadFormatName, numChannels) {
+}
+
+AudioRTPSink::~AudioRTPSink() {
+}
+
+char const* AudioRTPSink::sdpMediaType() const {
+  return "audio";
+}
diff --git a/liveMedia/Base64.cpp b/liveMedia/Base64.cpp
new file mode 100644
index 0000000..92ad4b5
--- /dev/null
+++ b/liveMedia/Base64.cpp
@@ -0,0 +1,122 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Base64 encoding and decoding
+// implementation
+
+#include "Base64.hh"
+#include <strDup.hh>
+#include <string.h>
+
+static char base64DecodeTable[256];
+
+static void initBase64DecodeTable() {
+  int i;
+  for (i = 0; i < 256; ++i) base64DecodeTable[i] = (char)0x80;
+      // default value: invalid
+
+  for (i = 'A'; i <= 'Z'; ++i) base64DecodeTable[i] = 0 + (i - 'A');
+  for (i = 'a'; i <= 'z'; ++i) base64DecodeTable[i] = 26 + (i - 'a');
+  for (i = '0'; i <= '9'; ++i) base64DecodeTable[i] = 52 + (i - '0');
+  base64DecodeTable[(unsigned char)'+'] = 62;
+  base64DecodeTable[(unsigned char)'/'] = 63;
+  base64DecodeTable[(unsigned char)'='] = 0;
+}
+
+unsigned char* base64Decode(char const* in, unsigned& resultSize,
+			    Boolean trimTrailingZeros) {
+  if (in == NULL) return NULL; // sanity check
+  return base64Decode(in, strlen(in), resultSize, trimTrailingZeros);
+}
+
+unsigned char* base64Decode(char const* in, unsigned inSize,
+			    unsigned& resultSize,
+			    Boolean trimTrailingZeros) {
+  static Boolean haveInitializedBase64DecodeTable = False;
+  if (!haveInitializedBase64DecodeTable) {
+    initBase64DecodeTable();
+    haveInitializedBase64DecodeTable = True;
+  }
+
+  unsigned char* out = new unsigned char[inSize+1]; // ensures we have enough space
+  int k = 0;
+  int paddingCount = 0;
+  int const jMax = inSize - 3;
+     // in case "inSize" is not a multiple of 4 (although it should be)
+  for (int j = 0; j < jMax; j += 4) {
+    char inTmp[4], outTmp[4];
+    for (int i = 0; i < 4; ++i) {
+      inTmp[i] = in[i+j];
+      if (inTmp[i] == '=') ++paddingCount;
+      outTmp[i] = base64DecodeTable[(unsigned char)inTmp[i]];
+      if ((outTmp[i]&0x80) != 0) outTmp[i] = 0; // this happens only if there was an invalid character; pretend that it was 'A'
+    }
+
+    out[k++] = (outTmp[0]<<2) | (outTmp[1]>>4);
+    out[k++] = (outTmp[1]<<4) | (outTmp[2]>>2);
+    out[k++] = (outTmp[2]<<6) | outTmp[3];
+  }
+
+  if (trimTrailingZeros) {
+    while (paddingCount > 0 && k > 0 && out[k-1] == '\0') { --k; --paddingCount; }
+  }
+  resultSize = k;
+  unsigned char* result = new unsigned char[resultSize];
+  memmove(result, out, resultSize);
+  delete[] out;
+
+  return result;
+}
+
+static const char base64Char[] =
+"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+char* base64Encode(char const* origSigned, unsigned origLength) {
+  unsigned char const* orig = (unsigned char const*)origSigned; // in case any input bytes have the MSB set
+  if (orig == NULL) return NULL;
+
+  unsigned const numOrig24BitValues = origLength/3;
+  Boolean havePadding = origLength > numOrig24BitValues*3;
+  Boolean havePadding2 = origLength == numOrig24BitValues*3 + 2;
+  unsigned const numResultBytes = 4*(numOrig24BitValues + havePadding);
+  char* result = new char[numResultBytes+1]; // allow for trailing '\0'
+
+  // Map each full group of 3 input bytes into 4 output base-64 characters:
+  unsigned i;
+  for (i = 0; i < numOrig24BitValues; ++i) {
+    result[4*i+0] = base64Char[(orig[3*i]>>2)&0x3F];
+    result[4*i+1] = base64Char[(((orig[3*i]&0x3)<<4) | (orig[3*i+1]>>4))&0x3F];
+    result[4*i+2] = base64Char[((orig[3*i+1]<<2) | (orig[3*i+2]>>6))&0x3F];
+    result[4*i+3] = base64Char[orig[3*i+2]&0x3F];
+  }
+
+  // Now, take padding into account.  (Note: i == numOrig24BitValues)
+  if (havePadding) {
+    result[4*i+0] = base64Char[(orig[3*i]>>2)&0x3F];
+    if (havePadding2) {
+      result[4*i+1] = base64Char[(((orig[3*i]&0x3)<<4) | (orig[3*i+1]>>4))&0x3F];
+      result[4*i+2] = base64Char[(orig[3*i+1]<<2)&0x3F];
+    } else {
+      result[4*i+1] = base64Char[((orig[3*i]&0x3)<<4)&0x3F];
+      result[4*i+2] = '=';
+    }
+    result[4*i+3] = '=';
+  }
+
+  result[numResultBytes] = '\0';
+  return result;
+}
diff --git a/liveMedia/BasicUDPSink.cpp b/liveMedia/BasicUDPSink.cpp
new file mode 100644
index 0000000..74fee56
--- /dev/null
+++ b/liveMedia/BasicUDPSink.cpp
@@ -0,0 +1,101 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simple UDP sink (i.e., without RTP or other headers added); one frame per packet
+// Implementation
+
+#include "BasicUDPSink.hh"
+#include <GroupsockHelper.hh>
+
+BasicUDPSink* BasicUDPSink::createNew(UsageEnvironment& env, Groupsock* gs,
+				      unsigned maxPayloadSize) {
+  return new BasicUDPSink(env, gs, maxPayloadSize);
+}
+
+BasicUDPSink::BasicUDPSink(UsageEnvironment& env, Groupsock* gs,
+			   unsigned maxPayloadSize)
+  : MediaSink(env),
+    fGS(gs), fMaxPayloadSize(maxPayloadSize) {
+  fOutputBuffer = new unsigned char[fMaxPayloadSize];
+}
+
+BasicUDPSink::~BasicUDPSink() {
+  delete[] fOutputBuffer;
+}
+
+Boolean BasicUDPSink::continuePlaying() {
+  // Record the fact that we're starting to play now:
+  gettimeofday(&fNextSendTime, NULL);
+
+  // Arrange to get and send the first payload.
+  // (This will also schedule any future sends.)
+  continuePlaying1();
+  return True;
+}
+
+void BasicUDPSink::continuePlaying1() {
+  nextTask() = NULL;
+  if (fSource != NULL) {
+    fSource->getNextFrame(fOutputBuffer, fMaxPayloadSize,
+			  afterGettingFrame, this,
+			  onSourceClosure, this);
+  }
+}
+
+void BasicUDPSink::afterGettingFrame(void* clientData, unsigned frameSize,
+				     unsigned numTruncatedBytes,
+				     struct timeval /*presentationTime*/,
+				     unsigned durationInMicroseconds) {
+  BasicUDPSink* sink = (BasicUDPSink*)clientData;
+  sink->afterGettingFrame1(frameSize, numTruncatedBytes, durationInMicroseconds);
+}
+
+void BasicUDPSink::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+				      unsigned durationInMicroseconds) {
+  if (numTruncatedBytes > 0) {
+    envir() << "BasicUDPSink::afterGettingFrame1(): The input frame data was too large for our spcified maximum payload size ("
+	    << fMaxPayloadSize << ").  "
+	    << numTruncatedBytes << " bytes of trailing data was dropped!\n";
+  }
+
+  // Send the packet:
+  fGS->output(envir(), fOutputBuffer, frameSize);
+
+  // Figure out the time at which the next packet should be sent, based
+  // on the duration of the payload that we just read:
+  fNextSendTime.tv_usec += durationInMicroseconds;
+  fNextSendTime.tv_sec += fNextSendTime.tv_usec/1000000;
+  fNextSendTime.tv_usec %= 1000000;
+
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+  int secsDiff = fNextSendTime.tv_sec - timeNow.tv_sec;
+  int64_t uSecondsToGo = secsDiff*1000000 + (fNextSendTime.tv_usec - timeNow.tv_usec);
+  if (uSecondsToGo < 0 || secsDiff < 0) { // sanity check: Make sure that the time-to-delay is non-negative:
+    uSecondsToGo = 0;
+  }
+
+  // Delay this amount of time:
+  nextTask() = envir().taskScheduler().scheduleDelayedTask(uSecondsToGo,
+							   (TaskFunc*)sendNext, this);
+}
+
+// The following is called after each delay between packet sends:
+void BasicUDPSink::sendNext(void* firstArg) {
+  BasicUDPSink* sink = (BasicUDPSink*)firstArg;
+  sink->continuePlaying1();
+}
diff --git a/liveMedia/BasicUDPSource.cpp b/liveMedia/BasicUDPSource.cpp
new file mode 100644
index 0000000..e8ecf9e
--- /dev/null
+++ b/liveMedia/BasicUDPSource.cpp
@@ -0,0 +1,73 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simple UDP source, where every UDP payload is a complete frame
+// Implementation
+
+#include "BasicUDPSource.hh"
+#include <GroupsockHelper.hh>
+
+BasicUDPSource* BasicUDPSource::createNew(UsageEnvironment& env,
+					Groupsock* inputGS) {
+  return new BasicUDPSource(env, inputGS);
+}
+
+BasicUDPSource::BasicUDPSource(UsageEnvironment& env, Groupsock* inputGS)
+  : FramedSource(env), fInputGS(inputGS), fHaveStartedReading(False) {
+  // Try to use a large receive buffer (in the OS):
+  increaseReceiveBufferTo(env, inputGS->socketNum(), 50*1024);
+
+  // Make the socket non-blocking, even though it will be read from only asynchronously, when packets arrive.
+  // The reason for this is that, in some OSs, reads on a blocking socket can (allegedly) sometimes block,
+  // even if the socket was previously reported (e.g., by "select()") as having data available.
+  // (This can supposedly happen if the UDP checksum fails, for example.)
+  makeSocketNonBlocking(fInputGS->socketNum());
+}
+
+BasicUDPSource::~BasicUDPSource(){
+  envir().taskScheduler().turnOffBackgroundReadHandling(fInputGS->socketNum());
+}
+
+void BasicUDPSource::doGetNextFrame() {
+  if (!fHaveStartedReading) {
+    // Await incoming packets:
+    envir().taskScheduler().turnOnBackgroundReadHandling(fInputGS->socketNum(),
+	 (TaskScheduler::BackgroundHandlerProc*)&incomingPacketHandler, this);
+    fHaveStartedReading = True;
+  }
+}
+
+void BasicUDPSource::doStopGettingFrames() {
+  envir().taskScheduler().turnOffBackgroundReadHandling(fInputGS->socketNum());
+  fHaveStartedReading = False;
+}
+
+
+void BasicUDPSource::incomingPacketHandler(BasicUDPSource* source, int /*mask*/){
+  source->incomingPacketHandler1();
+}
+
+void BasicUDPSource::incomingPacketHandler1() {
+  if (!isCurrentlyAwaitingData()) return; // we're not ready for the data yet
+
+  // Read the packet into our desired destination:
+  struct sockaddr_in fromAddress;
+  if (!fInputGS->handleRead(fTo, fMaxSize, fFrameSize, fromAddress)) return;
+
+  // Tell our client that we have new data:
+  afterGetting(this); // we're preceded by a net read; no infinite recursion
+}
diff --git a/liveMedia/BitVector.cpp b/liveMedia/BitVector.cpp
new file mode 100644
index 0000000..0374e94
--- /dev/null
+++ b/liveMedia/BitVector.cpp
@@ -0,0 +1,183 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Bit Vector data structure
+// Implementation
+
+#include "BitVector.hh"
+
+BitVector::BitVector(unsigned char* baseBytePtr,
+		     unsigned baseBitOffset,
+		     unsigned totNumBits) {
+  setup(baseBytePtr, baseBitOffset, totNumBits);
+}
+
+void BitVector::setup(unsigned char* baseBytePtr,
+		      unsigned baseBitOffset,
+		      unsigned totNumBits) {
+  fBaseBytePtr = baseBytePtr;
+  fBaseBitOffset = baseBitOffset;
+  fTotNumBits = totNumBits;
+  fCurBitIndex = 0;
+}
+
+static unsigned char const singleBitMask[8]
+    = {0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01};
+
+#define MAX_LENGTH 32
+
+void BitVector::putBits(unsigned from, unsigned numBits) {
+  if (numBits == 0) return; 
+
+  unsigned char tmpBuf[4];
+  unsigned overflowingBits = 0;
+
+  if (numBits > MAX_LENGTH) {
+    numBits = MAX_LENGTH;
+  }
+
+  if (numBits > fTotNumBits - fCurBitIndex) {
+    overflowingBits = numBits - (fTotNumBits - fCurBitIndex);
+  }
+
+  tmpBuf[0] = (unsigned char)(from>>24);
+  tmpBuf[1] = (unsigned char)(from>>16);
+  tmpBuf[2] = (unsigned char)(from>>8);
+  tmpBuf[3] = (unsigned char)from;
+
+  shiftBits(fBaseBytePtr, fBaseBitOffset + fCurBitIndex, /* to */
+	    tmpBuf, MAX_LENGTH - numBits, /* from */
+	    numBits - overflowingBits /* num bits */);
+  fCurBitIndex += numBits - overflowingBits;
+}
+
+void BitVector::put1Bit(unsigned bit) {
+  // The following is equivalent to "putBits(..., 1)", except faster:
+  if (fCurBitIndex >= fTotNumBits) { /* overflow */
+    return;
+  } else {
+    unsigned totBitOffset = fBaseBitOffset + fCurBitIndex++;
+    unsigned char mask = singleBitMask[totBitOffset%8];
+    if (bit) {
+      fBaseBytePtr[totBitOffset/8] |= mask;
+    } else {
+      fBaseBytePtr[totBitOffset/8] &=~ mask;
+    }
+  }
+}
+
+unsigned BitVector::getBits(unsigned numBits) {
+  if (numBits == 0) return 0;
+
+  unsigned char tmpBuf[4];
+  unsigned overflowingBits = 0;
+
+  if (numBits > MAX_LENGTH) {
+    numBits = MAX_LENGTH;
+  }
+
+  if (numBits > fTotNumBits - fCurBitIndex) {
+    overflowingBits = numBits - (fTotNumBits - fCurBitIndex);
+  }
+
+  shiftBits(tmpBuf, 0, /* to */
+	    fBaseBytePtr, fBaseBitOffset + fCurBitIndex, /* from */
+	    numBits - overflowingBits /* num bits */);
+  fCurBitIndex += numBits - overflowingBits;
+
+  unsigned result
+    = (tmpBuf[0]<<24) | (tmpBuf[1]<<16) | (tmpBuf[2]<<8) | tmpBuf[3];
+  result >>= (MAX_LENGTH - numBits); // move into low-order part of word
+  result &= (0xFFFFFFFF << overflowingBits); // so any overflow bits are 0
+  return result;
+}
+
+unsigned BitVector::get1Bit() {
+  // The following is equivalent to "getBits(1)", except faster:
+
+  if (fCurBitIndex >= fTotNumBits) { /* overflow */
+    return 0;
+  } else {
+    unsigned totBitOffset = fBaseBitOffset + fCurBitIndex++;
+    unsigned char curFromByte = fBaseBytePtr[totBitOffset/8];
+    unsigned result = (curFromByte >> (7-(totBitOffset%8))) & 0x01;
+    return result;
+  }
+}
+
+void BitVector::skipBits(unsigned numBits) {
+  if (numBits > fTotNumBits - fCurBitIndex) { /* overflow */
+    fCurBitIndex = fTotNumBits;
+  } else {
+    fCurBitIndex += numBits;
+  }
+}
+
+unsigned BitVector::get_expGolomb() {
+  unsigned numLeadingZeroBits = 0;
+  unsigned codeStart = 1;
+
+  while (get1Bit() == 0 && fCurBitIndex < fTotNumBits) {
+    ++numLeadingZeroBits;
+    codeStart *= 2;
+  }
+
+  return codeStart - 1 + getBits(numLeadingZeroBits);
+}
+
+int BitVector::get_expGolombSigned() {
+  unsigned codeNum = get_expGolomb();
+
+  if ((codeNum&1) == 0) { // even
+    return -(int)(codeNum/2);
+  } else { // odd
+    return (codeNum+1)/2;
+  }
+}
+
+void shiftBits(unsigned char* toBasePtr, unsigned toBitOffset,
+	       unsigned char const* fromBasePtr, unsigned fromBitOffset,
+	       unsigned numBits) {
+  if (numBits == 0) return;
+
+  /* Note that from and to may overlap, if from>to */
+  unsigned char const* fromBytePtr = fromBasePtr + fromBitOffset/8;
+  unsigned fromBitRem = fromBitOffset%8;
+  unsigned char* toBytePtr = toBasePtr + toBitOffset/8;
+  unsigned toBitRem = toBitOffset%8;
+
+  while (numBits-- > 0) {
+    unsigned char fromBitMask = singleBitMask[fromBitRem];
+    unsigned char fromBit = (*fromBytePtr)&fromBitMask;
+    unsigned char toBitMask = singleBitMask[toBitRem];
+
+    if (fromBit != 0) {
+      *toBytePtr |= toBitMask;
+    } else {
+      *toBytePtr &=~ toBitMask;
+    }
+
+    if (++fromBitRem == 8) {
+      ++fromBytePtr;
+      fromBitRem = 0;
+    }
+    if (++toBitRem == 8) {
+      ++toBytePtr;
+      toBitRem = 0;
+    }
+  }
+}
diff --git a/liveMedia/ByteStreamFileSource.cpp b/liveMedia/ByteStreamFileSource.cpp
new file mode 100644
index 0000000..42be417
--- /dev/null
+++ b/liveMedia/ByteStreamFileSource.cpp
@@ -0,0 +1,184 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A file source that is a plain byte stream (rather than frames)
+// Implementation
+
+#include "ByteStreamFileSource.hh"
+#include "InputFile.hh"
+#include "GroupsockHelper.hh"
+
+////////// ByteStreamFileSource //////////
+
+ByteStreamFileSource*
+ByteStreamFileSource::createNew(UsageEnvironment& env, char const* fileName,
+				unsigned preferredFrameSize,
+				unsigned playTimePerFrame) {
+  FILE* fid = OpenInputFile(env, fileName);
+  if (fid == NULL) return NULL;
+
+  ByteStreamFileSource* newSource
+    = new ByteStreamFileSource(env, fid, preferredFrameSize, playTimePerFrame);
+  newSource->fFileSize = GetFileSize(fileName, fid);
+
+  return newSource;
+}
+
+ByteStreamFileSource*
+ByteStreamFileSource::createNew(UsageEnvironment& env, FILE* fid,
+				unsigned preferredFrameSize,
+				unsigned playTimePerFrame) {
+  if (fid == NULL) return NULL;
+
+  ByteStreamFileSource* newSource = new ByteStreamFileSource(env, fid, preferredFrameSize, playTimePerFrame);
+  newSource->fFileSize = GetFileSize(NULL, fid);
+
+  return newSource;
+}
+
+void ByteStreamFileSource::seekToByteAbsolute(u_int64_t byteNumber, u_int64_t numBytesToStream) {
+  SeekFile64(fFid, (int64_t)byteNumber, SEEK_SET);
+
+  fNumBytesToStream = numBytesToStream;
+  fLimitNumBytesToStream = fNumBytesToStream > 0;
+}
+
+void ByteStreamFileSource::seekToByteRelative(int64_t offset, u_int64_t numBytesToStream) {
+  SeekFile64(fFid, offset, SEEK_CUR);
+
+  fNumBytesToStream = numBytesToStream;
+  fLimitNumBytesToStream = fNumBytesToStream > 0;
+}
+
+void ByteStreamFileSource::seekToEnd() {
+  SeekFile64(fFid, 0, SEEK_END);
+}
+
+ByteStreamFileSource::ByteStreamFileSource(UsageEnvironment& env, FILE* fid,
+					   unsigned preferredFrameSize,
+					   unsigned playTimePerFrame)
+  : FramedFileSource(env, fid), fFileSize(0), fPreferredFrameSize(preferredFrameSize),
+    fPlayTimePerFrame(playTimePerFrame), fLastPlayTime(0),
+    fHaveStartedReading(False), fLimitNumBytesToStream(False), fNumBytesToStream(0) {
+#ifndef READ_FROM_FILES_SYNCHRONOUSLY
+  makeSocketNonBlocking(fileno(fFid));
+#endif
+
+  // Test whether the file is seekable
+  fFidIsSeekable = FileIsSeekable(fFid);
+}
+
+ByteStreamFileSource::~ByteStreamFileSource() {
+  if (fFid == NULL) return;
+
+#ifndef READ_FROM_FILES_SYNCHRONOUSLY
+  envir().taskScheduler().turnOffBackgroundReadHandling(fileno(fFid));
+#endif
+
+  CloseInputFile(fFid);
+}
+
+void ByteStreamFileSource::doGetNextFrame() {
+  if (feof(fFid) || ferror(fFid) || (fLimitNumBytesToStream && fNumBytesToStream == 0)) {
+    handleClosure();
+    return;
+  }
+
+#ifdef READ_FROM_FILES_SYNCHRONOUSLY
+  doReadFromFile();
+#else
+  if (!fHaveStartedReading) {
+    // Await readable data from the file:
+    envir().taskScheduler().turnOnBackgroundReadHandling(fileno(fFid),
+	       (TaskScheduler::BackgroundHandlerProc*)&fileReadableHandler, this);
+    fHaveStartedReading = True;
+  }
+#endif
+}
+
+void ByteStreamFileSource::doStopGettingFrames() {
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+#ifndef READ_FROM_FILES_SYNCHRONOUSLY
+  envir().taskScheduler().turnOffBackgroundReadHandling(fileno(fFid));
+  fHaveStartedReading = False;
+#endif
+}
+
+void ByteStreamFileSource::fileReadableHandler(ByteStreamFileSource* source, int /*mask*/) {
+  if (!source->isCurrentlyAwaitingData()) {
+    source->doStopGettingFrames(); // we're not ready for the data yet
+    return;
+  }
+  source->doReadFromFile();
+}
+
+void ByteStreamFileSource::doReadFromFile() {
+  // Try to read as many bytes as will fit in the buffer provided (or "fPreferredFrameSize" if less)
+  if (fLimitNumBytesToStream && fNumBytesToStream < (u_int64_t)fMaxSize) {
+    fMaxSize = (unsigned)fNumBytesToStream;
+  }
+  if (fPreferredFrameSize > 0 && fPreferredFrameSize < fMaxSize) {
+    fMaxSize = fPreferredFrameSize;
+  }
+#ifdef READ_FROM_FILES_SYNCHRONOUSLY
+  fFrameSize = fread(fTo, 1, fMaxSize, fFid);
+#else
+  if (fFidIsSeekable) {
+    fFrameSize = fread(fTo, 1, fMaxSize, fFid);
+  } else {
+    // For non-seekable files (e.g., pipes), call "read()" rather than "fread()", to ensure that the read doesn't block:
+    fFrameSize = read(fileno(fFid), fTo, fMaxSize);
+  }
+#endif
+  if (fFrameSize == 0) {
+    handleClosure();
+    return;
+  }
+  fNumBytesToStream -= fFrameSize;
+
+  // Set the 'presentation time':
+  if (fPlayTimePerFrame > 0 && fPreferredFrameSize > 0) {
+    if (fPresentationTime.tv_sec == 0 && fPresentationTime.tv_usec == 0) {
+      // This is the first frame, so use the current time:
+      gettimeofday(&fPresentationTime, NULL);
+    } else {
+      // Increment by the play time of the previous data:
+      unsigned uSeconds	= fPresentationTime.tv_usec + fLastPlayTime;
+      fPresentationTime.tv_sec += uSeconds/1000000;
+      fPresentationTime.tv_usec = uSeconds%1000000;
+    }
+
+    // Remember the play time of this data:
+    fLastPlayTime = (fPlayTimePerFrame*fFrameSize)/fPreferredFrameSize;
+    fDurationInMicroseconds = fLastPlayTime;
+  } else {
+    // We don't know a specific play time duration for this data,
+    // so just record the current time as being the 'presentation time':
+    gettimeofday(&fPresentationTime, NULL);
+  }
+
+  // Inform the reader that he has data:
+#ifdef READ_FROM_FILES_SYNCHRONOUSLY
+  // To avoid possible infinite recursion, we need to return to the event loop to do this:
+  nextTask() = envir().taskScheduler().scheduleDelayedTask(0,
+				(TaskFunc*)FramedSource::afterGetting, this);
+#else
+  // Because the file read was done from the event loop, we can call the
+  // 'after getting' function directly, without risk of infinite recursion:
+  FramedSource::afterGetting(this);
+#endif
+}
diff --git a/liveMedia/ByteStreamMemoryBufferSource.cpp b/liveMedia/ByteStreamMemoryBufferSource.cpp
new file mode 100644
index 0000000..66c77ce
--- /dev/null
+++ b/liveMedia/ByteStreamMemoryBufferSource.cpp
@@ -0,0 +1,118 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class for streaming data from a (static) memory buffer, as if it were a file.
+// Implementation
+
+#include "ByteStreamMemoryBufferSource.hh"
+#include "GroupsockHelper.hh"
+
+////////// ByteStreamMemoryBufferSource //////////
+
+ByteStreamMemoryBufferSource*
+ByteStreamMemoryBufferSource::createNew(UsageEnvironment& env,
+					u_int8_t* buffer, u_int64_t bufferSize,
+					Boolean deleteBufferOnClose,
+					unsigned preferredFrameSize,
+					unsigned playTimePerFrame) {
+  if (buffer == NULL) return NULL;
+
+  return new ByteStreamMemoryBufferSource(env, buffer, bufferSize, deleteBufferOnClose, preferredFrameSize, playTimePerFrame);
+}
+
+ByteStreamMemoryBufferSource::ByteStreamMemoryBufferSource(UsageEnvironment& env,
+							   u_int8_t* buffer, u_int64_t bufferSize,
+							   Boolean deleteBufferOnClose,
+							   unsigned preferredFrameSize,
+							   unsigned playTimePerFrame)
+  : FramedSource(env), fBuffer(buffer), fBufferSize(bufferSize), fCurIndex(0), fDeleteBufferOnClose(deleteBufferOnClose),
+    fPreferredFrameSize(preferredFrameSize), fPlayTimePerFrame(playTimePerFrame), fLastPlayTime(0),
+    fLimitNumBytesToStream(False), fNumBytesToStream(0) {
+}
+
+ByteStreamMemoryBufferSource::~ByteStreamMemoryBufferSource() {
+  if (fDeleteBufferOnClose) delete[] fBuffer;
+}
+
+void ByteStreamMemoryBufferSource::seekToByteAbsolute(u_int64_t byteNumber, u_int64_t numBytesToStream) {
+  fCurIndex = byteNumber;
+  if (fCurIndex > fBufferSize) fCurIndex = fBufferSize;
+
+  fNumBytesToStream = numBytesToStream;
+  fLimitNumBytesToStream = fNumBytesToStream > 0;
+}
+
+void ByteStreamMemoryBufferSource::seekToByteRelative(int64_t offset, u_int64_t numBytesToStream) {
+  int64_t newIndex = fCurIndex + offset;
+  if (newIndex < 0) {
+    fCurIndex = 0;
+  } else {
+    fCurIndex = (u_int64_t)offset;
+    if (fCurIndex > fBufferSize) fCurIndex = fBufferSize;
+  }
+
+  fNumBytesToStream = numBytesToStream;
+  fLimitNumBytesToStream = fNumBytesToStream > 0;
+}
+
+void ByteStreamMemoryBufferSource::doGetNextFrame() {
+  if (fCurIndex >= fBufferSize || (fLimitNumBytesToStream && fNumBytesToStream == 0)) {
+    handleClosure();
+    return;
+  }
+
+  // Try to read as many bytes as will fit in the buffer provided (or "fPreferredFrameSize" if less)
+  fFrameSize = fMaxSize;
+  if (fLimitNumBytesToStream && fNumBytesToStream < (u_int64_t)fFrameSize) {
+    fFrameSize = (unsigned)fNumBytesToStream;
+  }
+  if (fPreferredFrameSize > 0 && fPreferredFrameSize < fFrameSize) {
+    fFrameSize = fPreferredFrameSize;
+  }
+
+  if (fCurIndex + fFrameSize > fBufferSize) {
+    fFrameSize = (unsigned)(fBufferSize - fCurIndex);
+  }
+
+  memmove(fTo, &fBuffer[fCurIndex], fFrameSize);
+  fCurIndex += fFrameSize;
+  fNumBytesToStream -= fFrameSize;
+
+  // Set the 'presentation time':
+  if (fPlayTimePerFrame > 0 && fPreferredFrameSize > 0) {
+    if (fPresentationTime.tv_sec == 0 && fPresentationTime.tv_usec == 0) {
+      // This is the first frame, so use the current time:
+      gettimeofday(&fPresentationTime, NULL);
+    } else {
+      // Increment by the play time of the previous data:
+      unsigned uSeconds	= fPresentationTime.tv_usec + fLastPlayTime;
+      fPresentationTime.tv_sec += uSeconds/1000000;
+      fPresentationTime.tv_usec = uSeconds%1000000;
+    }
+
+    // Remember the play time of this data:
+    fLastPlayTime = (fPlayTimePerFrame*fFrameSize)/fPreferredFrameSize;
+    fDurationInMicroseconds = fLastPlayTime;
+  } else {
+    // We don't know a specific play time duration for this data,
+    // so just record the current time as being the 'presentation time':
+    gettimeofday(&fPresentationTime, NULL);
+  }
+
+  // Inform the downstream object that it has data:
+  FramedSource::afterGetting(this);
+}
diff --git a/liveMedia/ByteStreamMultiFileSource.cpp b/liveMedia/ByteStreamMultiFileSource.cpp
new file mode 100644
index 0000000..0425bed
--- /dev/null
+++ b/liveMedia/ByteStreamMultiFileSource.cpp
@@ -0,0 +1,134 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A source that consists of multiple byte-stream files, read sequentially.
+// (The input is an array of file names, with a terminating 'file name' of NULL.) 
+// Implementation
+
+#include "ByteStreamMultiFileSource.hh"
+
+ByteStreamMultiFileSource
+::ByteStreamMultiFileSource(UsageEnvironment& env, char const** fileNameArray,
+			    unsigned preferredFrameSize, unsigned playTimePerFrame)
+  : FramedSource(env),
+    fPreferredFrameSize(preferredFrameSize), fPlayTimePerFrame(playTimePerFrame),
+    fCurrentlyReadSourceNumber(0), fHaveStartedNewFile(False) {
+    // Begin by counting the number of sources (by looking for a terminating 'file name' of NULL):
+    for (fNumSources = 0; ; ++fNumSources) {
+      if (fileNameArray[fNumSources] == NULL) break;
+    }
+
+    // Next, copy the source file names into our own array:
+    fFileNameArray = new char const*[fNumSources];
+    if (fFileNameArray == NULL) return;
+    unsigned i;
+    for (i = 0; i < fNumSources; ++i) {
+      fFileNameArray[i] = strDup(fileNameArray[i]);
+    }
+
+    // Next, set up our array of component ByteStreamFileSources
+    // Don't actually create these yet; instead, do this on demand
+    fSourceArray = new ByteStreamFileSource*[fNumSources];
+    if (fSourceArray == NULL) return;
+    for (i = 0; i < fNumSources; ++i) {
+      fSourceArray[i] = NULL;
+    }
+}
+
+ByteStreamMultiFileSource::~ByteStreamMultiFileSource() {
+  unsigned i;
+  for (i = 0; i < fNumSources; ++i) {
+    Medium::close(fSourceArray[i]);
+  }
+  delete[] fSourceArray;
+
+  for (i = 0; i < fNumSources; ++i) {
+    delete[] (char*)(fFileNameArray[i]);
+  }
+  delete[] fFileNameArray;
+}
+
+ByteStreamMultiFileSource* ByteStreamMultiFileSource
+::createNew(UsageEnvironment& env, char const** fileNameArray,
+	    unsigned preferredFrameSize, unsigned playTimePerFrame) {
+  ByteStreamMultiFileSource* newSource
+    = new ByteStreamMultiFileSource(env, fileNameArray,
+				    preferredFrameSize, playTimePerFrame);
+
+  return newSource;
+}
+
+void ByteStreamMultiFileSource::doGetNextFrame() {
+  do {
+    // First, check whether we've run out of sources:
+    if (fCurrentlyReadSourceNumber >= fNumSources) break;
+
+    fHaveStartedNewFile = False;
+    ByteStreamFileSource*& source
+      = fSourceArray[fCurrentlyReadSourceNumber];
+    if (source == NULL) {
+      // The current source hasn't been created yet.  Do this now:
+      source = ByteStreamFileSource::createNew(envir(),
+		       fFileNameArray[fCurrentlyReadSourceNumber],
+		       fPreferredFrameSize, fPlayTimePerFrame);
+      if (source == NULL) break;
+      fHaveStartedNewFile = True;
+    }
+
+    // (Attempt to) read from the current source.
+    source->getNextFrame(fTo, fMaxSize,
+			       afterGettingFrame, this,
+			       onSourceClosure, this);
+    return;
+  } while (0);
+
+  // An error occurred; consider ourselves closed:
+  handleClosure();
+}
+
+void ByteStreamMultiFileSource
+  ::afterGettingFrame(void* clientData,
+		      unsigned frameSize, unsigned numTruncatedBytes,
+		      struct timeval presentationTime,
+		      unsigned durationInMicroseconds) {
+  ByteStreamMultiFileSource* source
+    = (ByteStreamMultiFileSource*)clientData;
+  source->fFrameSize = frameSize;
+  source->fNumTruncatedBytes = numTruncatedBytes;
+  source->fPresentationTime = presentationTime;
+  source->fDurationInMicroseconds = durationInMicroseconds;
+  FramedSource::afterGetting(source);
+}
+
+void ByteStreamMultiFileSource::onSourceClosure(void* clientData) {
+  ByteStreamMultiFileSource* source
+    = (ByteStreamMultiFileSource*)clientData;
+  source->onSourceClosure1();
+}
+
+void ByteStreamMultiFileSource::onSourceClosure1() {
+  // This routine was called because the currently-read source was closed
+  // (probably due to EOF).  Close this source down, and move to the
+  // next one:
+  ByteStreamFileSource*& source
+    = fSourceArray[fCurrentlyReadSourceNumber++];
+  Medium::close(source);
+  source = NULL;
+
+  // Try reading again:
+  doGetNextFrame();
+}
diff --git a/liveMedia/COPYING b/liveMedia/COPYING
new file mode 120000
index 0000000..012065c
--- /dev/null
+++ b/liveMedia/COPYING
@@ -0,0 +1 @@
+../COPYING
\ No newline at end of file
diff --git a/liveMedia/COPYING.LESSER b/liveMedia/COPYING.LESSER
new file mode 120000
index 0000000..ce9a3ce
--- /dev/null
+++ b/liveMedia/COPYING.LESSER
@@ -0,0 +1 @@
+../COPYING.LESSER
\ No newline at end of file
diff --git a/liveMedia/DVVideoFileServerMediaSubsession.cpp b/liveMedia/DVVideoFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..0927883
--- /dev/null
+++ b/liveMedia/DVVideoFileServerMediaSubsession.cpp
@@ -0,0 +1,103 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a DV video file.
+// Implementation
+
+#include "DVVideoFileServerMediaSubsession.hh"
+#include "DVVideoRTPSink.hh"
+#include "ByteStreamFileSource.hh"
+#include "DVVideoStreamFramer.hh"
+
+DVVideoFileServerMediaSubsession*
+DVVideoFileServerMediaSubsession::createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource) {
+  return new DVVideoFileServerMediaSubsession(env, fileName, reuseFirstSource);
+}
+
+DVVideoFileServerMediaSubsession
+::DVVideoFileServerMediaSubsession(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource),
+    fFileDuration(0.0) {
+}
+
+DVVideoFileServerMediaSubsession::~DVVideoFileServerMediaSubsession() {
+}
+
+FramedSource* DVVideoFileServerMediaSubsession
+::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  // Create the video source:
+  ByteStreamFileSource* fileSource = ByteStreamFileSource::createNew(envir(), fFileName);
+  if (fileSource == NULL) return NULL;
+  fFileSize = fileSource->fileSize();
+
+  // Create a framer for the Video Elementary Stream:
+  DVVideoStreamFramer* framer = DVVideoStreamFramer::createNew(envir(), fileSource, True/*the file source is seekable*/);
+  
+  // Use the framer to figure out the file's duration:
+  unsigned frameSize;
+  double frameDuration;
+  if (framer->getFrameParameters(frameSize, frameDuration)) {
+    fFileDuration = (float)(((int64_t)fFileSize*frameDuration)/(frameSize*1000000.0));
+    estBitrate = (unsigned)((8000.0*frameSize)/frameDuration); // in kbps
+  } else {
+    estBitrate = 50000; // kbps, estimate
+  }
+
+  return framer;
+}
+
+RTPSink* DVVideoFileServerMediaSubsession::createNewRTPSink(Groupsock* rtpGroupsock,
+							    unsigned char rtpPayloadTypeIfDynamic,
+							    FramedSource* /*inputSource*/) {
+  return DVVideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+}
+
+char const* DVVideoFileServerMediaSubsession::getAuxSDPLine(RTPSink* rtpSink, FramedSource* inputSource) {
+  return ((DVVideoRTPSink*)rtpSink)->auxSDPLineFromFramer((DVVideoStreamFramer*)inputSource);
+}
+
+float DVVideoFileServerMediaSubsession::duration() const {
+  return fFileDuration;
+}
+
+void DVVideoFileServerMediaSubsession
+::seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes) {
+  // First, get the file source from "inputSource" (a framer):
+  DVVideoStreamFramer* framer = (DVVideoStreamFramer*)inputSource;
+  ByteStreamFileSource* fileSource = (ByteStreamFileSource*)(framer->inputSource());
+
+  // Then figure out where to seek to within the file:
+  if (fFileDuration > 0.0) {
+    u_int64_t seekByteNumber = (u_int64_t)(((int64_t)fFileSize*seekNPT)/fFileDuration);
+    numBytes = (u_int64_t)(((int64_t)fFileSize*streamDuration)/fFileDuration);
+    fileSource->seekToByteAbsolute(seekByteNumber, numBytes);
+  }
+}
+
+void DVVideoFileServerMediaSubsession
+::setStreamSourceDuration(FramedSource* inputSource, double streamDuration, u_int64_t& numBytes) {
+  // First, get the file source from "inputSource" (a framer):
+  DVVideoStreamFramer* framer = (DVVideoStreamFramer*)inputSource;
+  ByteStreamFileSource* fileSource = (ByteStreamFileSource*)(framer->inputSource());
+
+  // Then figure out how many bytes to limit the streaming to:
+  if (fFileDuration > 0.0) {
+    numBytes = (u_int64_t)(((int64_t)fFileSize*streamDuration)/fFileDuration);
+    fileSource->seekToByteRelative(0, numBytes);
+  }
+}
diff --git a/liveMedia/DVVideoRTPSink.cpp b/liveMedia/DVVideoRTPSink.cpp
new file mode 100644
index 0000000..e60e6fc
--- /dev/null
+++ b/liveMedia/DVVideoRTPSink.cpp
@@ -0,0 +1,95 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for DV video (RFC 3189)
+// (Thanks to Ben Hutchings for prototyping this.)
+// Implementation
+
+#include "DVVideoRTPSink.hh"
+
+////////// DVVideoRTPSink implementation //////////
+
+DVVideoRTPSink
+::DVVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat)
+  : VideoRTPSink(env, RTPgs, rtpPayloadFormat, 90000, "DV"),
+    fFmtpSDPLine(NULL) {
+}
+
+DVVideoRTPSink::~DVVideoRTPSink() {
+  delete[] fFmtpSDPLine;
+}
+
+DVVideoRTPSink*
+DVVideoRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat) {
+  return new DVVideoRTPSink(env, RTPgs, rtpPayloadFormat);
+}
+
+Boolean DVVideoRTPSink::sourceIsCompatibleWithUs(MediaSource& source) {
+  // Our source must be an appropriate framer:
+  return source.isDVVideoStreamFramer();
+}
+
+void DVVideoRTPSink::doSpecialFrameHandling(unsigned fragmentationOffset,
+					      unsigned char* /*frameStart*/,
+					      unsigned /*numBytesInFrame*/,
+					      struct timeval framePresentationTime,
+					      unsigned numRemainingBytes) {
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit:
+    setMarkerBit();
+  }
+
+  // Also set the RTP timestamp:
+  setTimestamp(framePresentationTime);
+}
+
+unsigned DVVideoRTPSink::computeOverflowForNewFrame(unsigned newFrameSize) const {
+  unsigned initialOverflow = MultiFramedRTPSink::computeOverflowForNewFrame(newFrameSize);
+
+  // Adjust (increase) this overflow, if necessary, so that the amount of frame data that we use is an integral number
+  // of DIF blocks:
+  unsigned numFrameBytesUsed = newFrameSize - initialOverflow;
+  initialOverflow += numFrameBytesUsed%DV_DIF_BLOCK_SIZE;
+
+  return initialOverflow;
+}
+
+char const* DVVideoRTPSink::auxSDPLine() {
+  // Generate a new "a=fmtp:" line each time, using parameters from
+  // our framer source (in case they've changed since the last time that
+  // we were called):
+  DVVideoStreamFramer* framerSource = (DVVideoStreamFramer*)fSource;
+  if (framerSource == NULL) return NULL; // we don't yet have a source
+
+  return auxSDPLineFromFramer(framerSource);
+}
+
+char const* DVVideoRTPSink::auxSDPLineFromFramer(DVVideoStreamFramer* framerSource) {
+  char const* const profileName = framerSource->profileName();
+  if (profileName == NULL) return NULL;
+
+  char const* const fmtpSDPFmt = "a=fmtp:%d encode=%s;audio=bundled\r\n";
+  unsigned fmtpSDPFmtSize = strlen(fmtpSDPFmt)
+    + 3 // max payload format code length
+    + strlen(profileName);
+  delete[] fFmtpSDPLine; // if it already exists
+  fFmtpSDPLine = new char[fmtpSDPFmtSize];  
+  sprintf(fFmtpSDPLine, fmtpSDPFmt, rtpPayloadType(), profileName);
+
+  return fFmtpSDPLine;
+}
diff --git a/liveMedia/DVVideoRTPSource.cpp b/liveMedia/DVVideoRTPSource.cpp
new file mode 100644
index 0000000..9afe213
--- /dev/null
+++ b/liveMedia/DVVideoRTPSource.cpp
@@ -0,0 +1,65 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// DV Video RTP Sources
+// Implementation
+
+#include "DVVideoRTPSource.hh"
+
+DVVideoRTPSource*
+DVVideoRTPSource::createNew(UsageEnvironment& env,
+			    Groupsock* RTPgs,
+			    unsigned char rtpPayloadFormat,
+			    unsigned rtpTimestampFrequency) {
+  return new DVVideoRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency);
+}
+
+DVVideoRTPSource::DVVideoRTPSource(UsageEnvironment& env,
+				   Groupsock* rtpGS,
+				   unsigned char rtpPayloadFormat,
+				   unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, rtpGS,
+			 rtpPayloadFormat, rtpTimestampFrequency) {
+}
+
+DVVideoRTPSource::~DVVideoRTPSource() {
+}
+
+#define DV_DIF_BLOCK_SIZE 80
+#define DV_SECTION_HEADER 0x1F
+
+Boolean DVVideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  unsigned const packetSize = packet->dataSize();
+  if (packetSize < DV_DIF_BLOCK_SIZE) return False; // TARFU!
+  
+  u_int8_t const* data = packet->data();
+  fCurrentPacketBeginsFrame = data[0] == DV_SECTION_HEADER && (data[1]&0xf8) == 0 && data[2] == 0; // thanks to Ben Hutchings
+
+  // The RTP "M" (marker) bit indicates the last fragment of a frame:
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
+
+  // There is no special header
+  resultSpecialHeaderSize = 0;
+  return True;
+}
+
+char const* DVVideoRTPSource::MIMEtype() const {
+  return "video/DV";
+}
+
diff --git a/liveMedia/DVVideoStreamFramer.cpp b/liveMedia/DVVideoStreamFramer.cpp
new file mode 100644
index 0000000..8d94758
--- /dev/null
+++ b/liveMedia/DVVideoStreamFramer.cpp
@@ -0,0 +1,220 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that parses a DV input stream into DV frames to deliver to the downstream object
+// Implementation
+// (Thanks to Ben Hutchings for his help, including a prototype implementation.)
+
+#include "DVVideoStreamFramer.hh"
+#include "GroupsockHelper.hh"
+
+////////// DVVideoStreamFramer implementation //////////
+
+DVVideoStreamFramer::DVVideoStreamFramer(UsageEnvironment& env, FramedSource* inputSource,
+					 Boolean sourceIsSeekable, Boolean leavePresentationTimesUnmodified)
+  : FramedFilter(env, inputSource),
+    fLeavePresentationTimesUnmodified(leavePresentationTimesUnmodified),
+    fOurProfile(NULL), fInitialBlocksPresent(False), fSourceIsSeekable(sourceIsSeekable) {
+  fTo = NULL; // hack used when reading "fSavedInitialBlocks"
+  // Use the current wallclock time as the initial 'presentation time':
+  gettimeofday(&fNextFramePresentationTime, NULL);
+}
+
+DVVideoStreamFramer::~DVVideoStreamFramer() {
+}
+
+DVVideoStreamFramer*
+DVVideoStreamFramer::createNew(UsageEnvironment& env, FramedSource* inputSource,
+			       Boolean sourceIsSeekable, Boolean leavePresentationTimesUnmodified) {
+  return new DVVideoStreamFramer(env, inputSource, sourceIsSeekable, leavePresentationTimesUnmodified);
+}
+
+// Define the parameters for the profiles that we understand:
+struct DVVideoProfile {
+  char const* name;
+  unsigned apt;
+  unsigned sType;
+  unsigned sequenceCount;
+  unsigned channelCount;
+  unsigned dvFrameSize; // in bytes (== sequenceCount*channelCount*(DV_NUM_BLOCKS_PER_SEQUENCE*DV_DIF_BLOCK_SIZE i.e. 12000))
+  double frameDuration; // duration of the above, in microseconds.  (1000000/this == frame rate)
+};
+
+static DVVideoProfile const profiles[] = {
+   { "SD-VCR/525-60",  0, 0x00, 10, 1, 120000, (1000000*1001)/30000.0 },
+   { "SD-VCR/625-50",  0, 0x00, 12, 1, 144000, 1000000/25.0 },
+   { "314M-25/525-60", 1, 0x00, 10, 1, 120000, (1000000*1001)/30000.0 },
+   { "314M-25/625-50", 1, 0x00, 12, 1, 144000, 1000000/25.0 },
+   { "314M-50/525-60", 1, 0x04, 10, 2, 240000, (1000000*1001)/30000.0 },
+   { "314M-50/625-50", 1, 0x04, 12, 2, 288000, 1000000/25.0 },
+   { "370M/1080-60i",  1, 0x14, 10, 4, 480000, (1000000*1001)/30000.0 },
+   { "370M/1080-50i",  1, 0x14, 12, 4, 576000, 1000000/25.0 },
+   { "370M/720-60p",   1, 0x18, 10, 2, 240000, (1000000*1001)/60000.0 },
+   { "370M/720-50p",   1, 0x18, 12, 2, 288000, 1000000/50.0 },
+   { NULL, 0, 0, 0, 0, 0, 0.0 }
+  };
+
+
+char const* DVVideoStreamFramer::profileName() {
+  if (fOurProfile == NULL) getProfile();
+
+  return fOurProfile != NULL ? ((DVVideoProfile const*)fOurProfile)->name : NULL;
+}
+
+Boolean DVVideoStreamFramer::getFrameParameters(unsigned& frameSize, double& frameDuration) {
+  if (fOurProfile == NULL) getProfile();
+  if (fOurProfile == NULL) return False;
+
+  frameSize = ((DVVideoProfile const*)fOurProfile)->dvFrameSize;
+  frameDuration = ((DVVideoProfile const*)fOurProfile)->frameDuration;
+  return True;
+}
+
+void DVVideoStreamFramer::getProfile() {
+  // To determine the stream's profile, we need to first read a chunk of data that we can parse:
+  fInputSource->getNextFrame(fSavedInitialBlocks, DV_SAVED_INITIAL_BLOCKS_SIZE,
+			     afterGettingFrame, this, FramedSource::handleClosure, this);
+  
+  // Handle events until the requested data arrives:
+  envir().taskScheduler().doEventLoop(&fInitialBlocksPresent);
+}
+
+Boolean DVVideoStreamFramer::isDVVideoStreamFramer() const {
+  return True;
+}
+
+void DVVideoStreamFramer::doGetNextFrame() {
+  fFrameSize = 0; // initially, until we deliver data
+
+  // If we have saved initial blocks (and won't be seeking back to re-read this data), so use this data first.
+  if (fInitialBlocksPresent && !fSourceIsSeekable) {
+    // For simplicity, we require the downstream object's buffer to be >= this data's size:
+    if (fMaxSize < DV_SAVED_INITIAL_BLOCKS_SIZE) {
+      fNumTruncatedBytes = fMaxSize;
+      afterGetting(this);
+      return;
+    }
+
+    memmove(fTo, fSavedInitialBlocks, DV_SAVED_INITIAL_BLOCKS_SIZE);
+    fFrameSize = DV_SAVED_INITIAL_BLOCKS_SIZE;
+    fTo += DV_SAVED_INITIAL_BLOCKS_SIZE;
+    fInitialBlocksPresent = False; // for the future
+  }
+    
+  // Arrange to read the (rest of the) requested data.
+  // (But first, make sure that we read an integral multiple of the DV block size.)
+  fMaxSize -= fMaxSize%DV_DIF_BLOCK_SIZE;
+  getAndDeliverData();
+}
+
+#define DV_SMALLEST_POSSIBLE_FRAME_SIZE 120000
+
+void DVVideoStreamFramer::getAndDeliverData() {
+  unsigned const totFrameSize
+    = fOurProfile != NULL ? ((DVVideoProfile const*)fOurProfile)->dvFrameSize : DV_SMALLEST_POSSIBLE_FRAME_SIZE;
+  unsigned totBytesToDeliver = totFrameSize < fMaxSize ? totFrameSize : fMaxSize;
+  unsigned numBytesToRead = totBytesToDeliver - fFrameSize;
+
+  fInputSource->getNextFrame(fTo, numBytesToRead, afterGettingFrame, this, FramedSource::handleClosure, this);
+}
+
+void DVVideoStreamFramer::afterGettingFrame(void* clientData, unsigned frameSize,
+					    unsigned numTruncatedBytes,
+					    struct timeval presentationTime, unsigned /*durationInMicroseconds*/) {
+  DVVideoStreamFramer* source = (DVVideoStreamFramer*)clientData;
+  source->afterGettingFrame(frameSize, numTruncatedBytes, presentationTime);
+}
+
+#define DVSectionId(n) ptr[(n)*DV_DIF_BLOCK_SIZE + 0]
+#define DVData(n,i) ptr[(n)*DV_DIF_BLOCK_SIZE + 3+(i)]
+
+#define DV_SECTION_HEADER 0x1F
+#define DV_PACK_HEADER_10 0x3F
+#define DV_PACK_HEADER_12 0xBF
+#define DV_SECTION_VAUX_MIN 0x50
+#define DV_SECTION_VAUX_MAX 0x5F
+#define DV_PACK_VIDEO_SOURCE 60
+#ifndef MILLION
+#define MILLION 1000000
+#endif
+
+void DVVideoStreamFramer::afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime) {
+  if (fOurProfile == NULL && frameSize >= DV_SAVED_INITIAL_BLOCKS_SIZE) {
+    // (Try to) parse this data enough to figure out its profile.
+    // We assume that the data begins on a (80-byte) block boundary, but not necessarily on a (150-block) sequence boundary.
+    // We therefore scan each 80-byte block, until we find the 6-block header that begins a sequence:
+    u_int8_t const* data = (fTo == NULL) ? fSavedInitialBlocks : fTo;
+    for (u_int8_t const* ptr = data; ptr + 6*DV_DIF_BLOCK_SIZE <= &data[DV_SAVED_INITIAL_BLOCKS_SIZE]; ptr += DV_DIF_BLOCK_SIZE) {
+      // Check whether "ptr" points to an appropriate header:
+      u_int8_t const sectionHeader = DVSectionId(0);
+      u_int8_t const sectionVAUX = DVSectionId(5);
+      u_int8_t const packHeaderNum = DVData(0,0);
+
+      if (sectionHeader == DV_SECTION_HEADER
+	  && (packHeaderNum == DV_PACK_HEADER_10 || packHeaderNum == DV_PACK_HEADER_12)
+	  && (sectionVAUX >= DV_SECTION_VAUX_MIN && sectionVAUX <= DV_SECTION_VAUX_MAX)) {
+	// This data begins a sequence; look up the DV profile from this:
+	u_int8_t const apt = DVData(0,1)&0x07;
+	u_int8_t const sType = DVData(5,48)&0x1F;
+	u_int8_t const sequenceCount = (packHeaderNum == DV_PACK_HEADER_10) ? 10 : 12;
+
+	// Use these three parameters (apt, sType, sequenceCount) to look up the DV profile:
+	for (DVVideoProfile const* profile = profiles; profile->name != NULL; ++profile) {
+	  if (profile->apt == apt && profile->sType == sType && profile->sequenceCount == sequenceCount) {
+	    fOurProfile = profile;
+	    break;
+	  }
+	}
+	break; // because we found a correct sequence header (even if we don't happen to define a profile for it)
+      }
+    }
+  }
+
+  if (fTo != NULL) { // There is a downstream object; complete delivery to it (or read more data, if necessary)
+    unsigned const totFrameSize
+      = fOurProfile != NULL ? ((DVVideoProfile const*)fOurProfile)->dvFrameSize : DV_SMALLEST_POSSIBLE_FRAME_SIZE;
+    fFrameSize += frameSize;
+    fTo += frameSize;
+    fPresentationTime = presentationTime; // by default; may get changed below
+
+    if (fFrameSize < totFrameSize && fFrameSize < fMaxSize && numTruncatedBytes == 0) {
+      // We have more data to deliver; get it now:
+      getAndDeliverData();
+    } else {
+      // We're done delivering this DV frame (but check for truncation):
+      fNumTruncatedBytes = totFrameSize - fFrameSize;
+
+      if (fOurProfile != NULL) {
+	// Also set the presentation time, and increment it for next time,
+	// based on the length of this frame:
+	if (!fLeavePresentationTimesUnmodified) fPresentationTime = fNextFramePresentationTime;
+
+	DVVideoProfile const* ourProfile =(DVVideoProfile const*)fOurProfile;
+	double durationInMicroseconds = (fFrameSize*ourProfile->frameDuration)/ourProfile->dvFrameSize;
+	fDurationInMicroseconds = (unsigned)durationInMicroseconds;
+	fNextFramePresentationTime.tv_usec += fDurationInMicroseconds;
+	fNextFramePresentationTime.tv_sec += fNextFramePresentationTime.tv_usec/MILLION;
+	fNextFramePresentationTime.tv_usec %= MILLION;
+      }
+
+      afterGetting(this);
+    }
+  } else {
+    // We read data into our special buffer; signal that it has arrived:
+    fInitialBlocksPresent = True;
+  }
+}
diff --git a/liveMedia/DeviceSource.cpp b/liveMedia/DeviceSource.cpp
new file mode 100644
index 0000000..95a1077
--- /dev/null
+++ b/liveMedia/DeviceSource.cpp
@@ -0,0 +1,156 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A template for a MediaSource encapsulating an audio/video input device
+//
+// NOTE: Sections of this code labeled "%%% TO BE WRITTEN %%%" are incomplete, and need to be written by the programmer
+// (depending on the features of the particular device).
+// Implementation
+
+#include "DeviceSource.hh"
+#include <GroupsockHelper.hh> // for "gettimeofday()"
+
+DeviceSource*
+DeviceSource::createNew(UsageEnvironment& env,
+			DeviceParameters params) {
+  return new DeviceSource(env, params);
+}
+
+EventTriggerId DeviceSource::eventTriggerId = 0;
+
+unsigned DeviceSource::referenceCount = 0;
+
+DeviceSource::DeviceSource(UsageEnvironment& env,
+			   DeviceParameters params)
+  : FramedSource(env), fParams(params) {
+  if (referenceCount == 0) {
+    // Any global initialization of the device would be done here:
+    //%%% TO BE WRITTEN %%%
+  }
+  ++referenceCount;
+
+  // Any instance-specific initialization of the device would be done here:
+  //%%% TO BE WRITTEN %%%
+
+  // We arrange here for our "deliverFrame" member function to be called
+  // whenever the next frame of data becomes available from the device.
+  //
+  // If the device can be accessed as a readable socket, then one easy way to do this is using a call to
+  //     envir().taskScheduler().turnOnBackgroundReadHandling( ... )
+  // (See examples of this call in the "liveMedia" directory.)
+  //
+  // If, however, the device *cannot* be accessed as a readable socket, then instead we can implement it using 'event triggers':
+  // Create an 'event trigger' for this device (if it hasn't already been done):
+  if (eventTriggerId == 0) {
+    eventTriggerId = envir().taskScheduler().createEventTrigger(deliverFrame0);
+  }
+}
+
+DeviceSource::~DeviceSource() {
+  // Any instance-specific 'destruction' (i.e., resetting) of the device would be done here:
+  //%%% TO BE WRITTEN %%%
+
+  --referenceCount;
+  if (referenceCount == 0) {
+    // Any global 'destruction' (i.e., resetting) of the device would be done here:
+    //%%% TO BE WRITTEN %%%
+
+    // Reclaim our 'event trigger'
+    envir().taskScheduler().deleteEventTrigger(eventTriggerId);
+    eventTriggerId = 0;
+  }
+}
+
+void DeviceSource::doGetNextFrame() {
+  // This function is called (by our 'downstream' object) when it asks for new data.
+
+  // Note: If, for some reason, the source device stops being readable (e.g., it gets closed), then you do the following:
+  if (0 /* the source stops being readable */ /*%%% TO BE WRITTEN %%%*/) {
+    handleClosure();
+    return;
+  }
+
+  // If a new frame of data is immediately available to be delivered, then do this now:
+  if (0 /* a new frame of data is immediately available to be delivered*/ /*%%% TO BE WRITTEN %%%*/) {
+    deliverFrame();
+  }
+
+  // No new data is immediately available to be delivered.  We don't do anything more here.
+  // Instead, our event trigger must be called (e.g., from a separate thread) when new data becomes available.
+}
+
+void DeviceSource::deliverFrame0(void* clientData) {
+  ((DeviceSource*)clientData)->deliverFrame();
+}
+
+void DeviceSource::deliverFrame() {
+  // This function is called when new frame data is available from the device.
+  // We deliver this data by copying it to the 'downstream' object, using the following parameters (class members):
+  // 'in' parameters (these should *not* be modified by this function):
+  //     fTo: The frame data is copied to this address.
+  //         (Note that the variable "fTo" is *not* modified.  Instead,
+  //          the frame data is copied to the address pointed to by "fTo".)
+  //     fMaxSize: This is the maximum number of bytes that can be copied
+  //         (If the actual frame is larger than this, then it should
+  //          be truncated, and "fNumTruncatedBytes" set accordingly.)
+  // 'out' parameters (these are modified by this function):
+  //     fFrameSize: Should be set to the delivered frame size (<= fMaxSize).
+  //     fNumTruncatedBytes: Should be set iff the delivered frame would have been
+  //         bigger than "fMaxSize", in which case it's set to the number of bytes
+  //         that have been omitted.
+  //     fPresentationTime: Should be set to the frame's presentation time
+  //         (seconds, microseconds).  This time must be aligned with 'wall-clock time' - i.e., the time that you would get
+  //         by calling "gettimeofday()".
+  //     fDurationInMicroseconds: Should be set to the frame's duration, if known.
+  //         If, however, the device is a 'live source' (e.g., encoded from a camera or microphone), then we probably don't need
+  //         to set this variable, because - in this case - data will never arrive 'early'.
+  // Note the code below.
+
+  if (!isCurrentlyAwaitingData()) return; // we're not ready for the data yet
+
+  u_int8_t* newFrameDataStart = (u_int8_t*)0xDEADBEEF; //%%% TO BE WRITTEN %%%
+  unsigned newFrameSize = 0; //%%% TO BE WRITTEN %%%
+
+  // Deliver the data here:
+  if (newFrameSize > fMaxSize) {
+    fFrameSize = fMaxSize;
+    fNumTruncatedBytes = newFrameSize - fMaxSize;
+  } else {
+    fFrameSize = newFrameSize;
+  }
+  gettimeofday(&fPresentationTime, NULL); // If you have a more accurate time - e.g., from an encoder - then use that instead.
+  // If the device is *not* a 'live source' (e.g., it comes instead from a file or buffer), then set "fDurationInMicroseconds" here.
+  memmove(fTo, newFrameDataStart, fFrameSize);
+
+  // After delivering the data, inform the reader that it is now available:
+  FramedSource::afterGetting(this);
+}
+
+
+// The following code would be called to signal that a new frame of data has become available.
+// This (unlike other "LIVE555 Streaming Media" library code) may be called from a separate thread.
+// (Note, however, that "triggerEvent()" cannot be called with the same 'event trigger id' from different threads.
+// Also, if you want to have multiple device threads, each one using a different 'event trigger id', then you will need
+// to make "eventTriggerId" a non-static member variable of "DeviceSource".)
+void signalNewFrameData() {
+  TaskScheduler* ourScheduler = NULL; //%%% TO BE WRITTEN %%%
+  DeviceSource* ourDevice  = NULL; //%%% TO BE WRITTEN %%%
+
+  if (ourScheduler != NULL) { // sanity check
+    ourScheduler->triggerEvent(DeviceSource::eventTriggerId, ourDevice);
+  }
+}
diff --git a/liveMedia/DigestAuthentication.cpp b/liveMedia/DigestAuthentication.cpp
new file mode 100644
index 0000000..1ccaf45
--- /dev/null
+++ b/liveMedia/DigestAuthentication.cpp
@@ -0,0 +1,173 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class used for digest authentication.
+// Implementation
+
+#include "DigestAuthentication.hh"
+#include "ourMD5.hh"
+#include <strDup.hh>
+#include <GroupsockHelper.hh> // for gettimeofday()
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+Authenticator::Authenticator() {
+  assign(NULL, NULL, NULL, NULL, False);
+}
+
+Authenticator::Authenticator(char const* username, char const* password, Boolean passwordIsMD5) {
+  assign(NULL, NULL, username, password, passwordIsMD5);
+}
+
+Authenticator::Authenticator(const Authenticator& orig) {
+  assign(orig.realm(), orig.nonce(), orig.username(), orig.password(), orig.fPasswordIsMD5);
+}
+
+Authenticator& Authenticator::operator=(const Authenticator& rightSide) {
+  if (&rightSide != this) {
+    reset();
+    assign(rightSide.realm(), rightSide.nonce(),
+	   rightSide.username(), rightSide.password(), rightSide.fPasswordIsMD5);
+  }
+
+  return *this;
+}
+
+Boolean Authenticator::operator<(const Authenticator* rightSide) {
+  // Returns True if "rightSide" is 'newer' than us:
+  if (rightSide != NULL && rightSide != this &&
+      (rightSide->realm() != NULL || rightSide->nonce() != NULL ||
+       username() == NULL || password() == NULL ||
+       strcmp(rightSide->username(), username()) != 0 ||
+       strcmp(rightSide->password(), password()) != 0)) {
+    return True;
+  }
+
+  return False;
+}
+
+Authenticator::~Authenticator() {
+  reset();
+}
+
+void Authenticator::reset() {
+  resetRealmAndNonce();
+  resetUsernameAndPassword();
+}
+
+void Authenticator::setRealmAndNonce(char const* realm, char const* nonce) {
+  resetRealmAndNonce();
+  assignRealmAndNonce(realm, nonce);
+}
+
+void Authenticator::setRealmAndRandomNonce(char const* realm) {
+  resetRealmAndNonce();
+
+  // Construct data to seed the random nonce:
+  struct {
+    struct timeval timestamp;
+    unsigned counter;
+  } seedData;
+  gettimeofday(&seedData.timestamp, NULL);
+  static unsigned counter = 0;
+  seedData.counter = ++counter;
+
+  // Use MD5 to compute a 'random' nonce from this seed data:
+  char nonceBuf[33];
+  our_MD5Data((unsigned char*)(&seedData), sizeof seedData, nonceBuf);
+
+  assignRealmAndNonce(realm, nonceBuf);
+}
+
+void Authenticator::setUsernameAndPassword(char const* username,
+					   char const* password,
+					   Boolean passwordIsMD5) {
+  resetUsernameAndPassword();
+  assignUsernameAndPassword(username, password, passwordIsMD5);
+}
+
+char const* Authenticator::computeDigestResponse(char const* cmd,
+						 char const* url) const {
+  // The "response" field is computed as:
+  //    md5(md5(<username>:<realm>:<password>):<nonce>:md5(<cmd>:<url>))
+  // or, if "fPasswordIsMD5" is True:
+  //    md5(<password>:<nonce>:md5(<cmd>:<url>))
+  char ha1Buf[33];
+  if (fPasswordIsMD5) {
+    strncpy(ha1Buf, password(), 32);
+    ha1Buf[32] = '\0'; // just in case
+  } else {
+    unsigned const ha1DataLen = strlen(username()) + 1
+      + strlen(realm()) + 1 + strlen(password());
+    unsigned char* ha1Data = new unsigned char[ha1DataLen+1];
+    sprintf((char*)ha1Data, "%s:%s:%s", username(), realm(), password());
+    our_MD5Data(ha1Data, ha1DataLen, ha1Buf);
+    delete[] ha1Data;
+  }
+
+  unsigned const ha2DataLen = strlen(cmd) + 1 + strlen(url);
+  unsigned char* ha2Data = new unsigned char[ha2DataLen+1];
+  sprintf((char*)ha2Data, "%s:%s", cmd, url);
+  char ha2Buf[33];
+  our_MD5Data(ha2Data, ha2DataLen, ha2Buf);
+  delete[] ha2Data;
+
+  unsigned const digestDataLen
+    = 32 + 1 + strlen(nonce()) + 1 + 32;
+  unsigned char* digestData = new unsigned char[digestDataLen+1];
+  sprintf((char*)digestData, "%s:%s:%s",
+          ha1Buf, nonce(), ha2Buf);
+  char const* result = our_MD5Data(digestData, digestDataLen, NULL);
+  delete[] digestData;
+  return result;
+}
+
+void Authenticator::reclaimDigestResponse(char const* responseStr) const {
+  delete[](char*)responseStr;
+}
+
+void Authenticator::resetRealmAndNonce() {
+  delete[] fRealm; fRealm = NULL;
+  delete[] fNonce; fNonce = NULL;
+}
+
+void Authenticator::resetUsernameAndPassword() {
+  delete[] fUsername; fUsername = NULL;
+  delete[] fPassword; fPassword = NULL;
+  fPasswordIsMD5 = False;
+}
+
+void Authenticator::assignRealmAndNonce(char const* realm, char const* nonce) {
+  fRealm = strDup(realm);
+  fNonce = strDup(nonce);
+}
+
+void Authenticator::assignUsernameAndPassword(char const* username, char const* password, Boolean passwordIsMD5) {
+  if (username == NULL) username = "";
+  if (password == NULL) password = "";
+
+  fUsername = strDup(username);
+  fPassword = strDup(password);
+  fPasswordIsMD5 = passwordIsMD5;
+}
+
+void Authenticator::assign(char const* realm, char const* nonce,
+			   char const* username, char const* password, Boolean passwordIsMD5) {
+  assignRealmAndNonce(realm, nonce);
+  assignUsernameAndPassword(username, password, passwordIsMD5);
+}
diff --git a/liveMedia/EBMLNumber.cpp b/liveMedia/EBMLNumber.cpp
new file mode 100644
index 0000000..c8c1898
--- /dev/null
+++ b/liveMedia/EBMLNumber.cpp
@@ -0,0 +1,150 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// EBML numbers (ids and sizes)
+// Implementation
+
+#include "EBMLNumber.hh"
+
+EBMLNumber::EBMLNumber(Boolean stripLeading1)
+    : stripLeading1(stripLeading1), len(0) {
+}
+
+EBMLNumber::~EBMLNumber() {
+}
+
+char* EBMLNumber::hexString() const {
+  static char printBuf[2*EBML_NUMBER_MAX_LEN + 1];
+  
+  char* to = printBuf;
+  for (unsigned i = 0; i < len; ++i) {
+    sprintf(to, "%02X", data[i]);
+    to += 2;
+  }
+
+  return printBuf;
+}
+
+u_int64_t EBMLNumber::val() const {
+  u_int64_t result = 0;
+
+  for (unsigned i = 0; i < len; ++i) {
+    result = result*256 + data[i];
+  }
+
+  return result;
+}
+
+EBMLId::EBMLId()
+  : EBMLNumber(False) {
+}
+
+EBMLId::~EBMLId() {
+}
+
+char const* EBMLId::stringName() const {
+  switch (val()) {
+    case MATROSKA_ID_EBML: { return "EBML"; }
+    case MATROSKA_ID_VOID: { return "Void"; }
+    case MATROSKA_ID_CRC_32: { return "CRC-32"; }
+    case MATROSKA_ID_SEGMENT: { return "Segment"; }
+    case MATROSKA_ID_SEEK_HEAD: { return "Seek Head"; }
+    case MATROSKA_ID_SEEK: { return "Seek"; }
+    case MATROSKA_ID_SEEK_ID: { return "Seek ID"; }
+    case MATROSKA_ID_SEEK_POSITION: { return "Seek Position"; }
+    case MATROSKA_ID_INFO: { return "Segment Info"; }
+    case MATROSKA_ID_SEGMENT_UID: { return "Segment UID"; }
+    case MATROSKA_ID_DURATION: { return "Segment Duration"; }
+    case MATROSKA_ID_TIMECODE_SCALE: { return "Timecode Scale"; }
+    case MATROSKA_ID_DATE_UTC: { return "Date (UTC)"; }
+    case MATROSKA_ID_TITLE: { return "Title"; }
+    case MATROSKA_ID_MUXING_APP: { return "Muxing App"; }
+    case MATROSKA_ID_WRITING_APP: { return "Writing App"; }
+    case MATROSKA_ID_CLUSTER: { return "Cluster"; }
+    case MATROSKA_ID_TIMECODE: { return "TimeCode"; }
+    case MATROSKA_ID_POSITION: { return "Position"; }
+    case MATROSKA_ID_PREV_SIZE: { return "Prev. Size"; }
+    case MATROSKA_ID_SIMPLEBLOCK: { return "SimpleBlock"; }
+    case MATROSKA_ID_BLOCK_GROUP: { return "Block Group"; }
+    case MATROSKA_ID_BLOCK: { return "Block"; }
+    case MATROSKA_ID_BLOCK_DURATION: { return "Block Duration"; }
+    case MATROSKA_ID_REFERENCE_BLOCK: { return "Reference Block"; }
+    case MATROSKA_ID_TRACKS: { return "Tracks"; }
+    case MATROSKA_ID_TRACK_ENTRY: { return "Track Entry"; }
+    case MATROSKA_ID_TRACK_NUMBER: { return "Track Number"; }
+    case MATROSKA_ID_TRACK_UID: { return "Track UID"; }
+    case MATROSKA_ID_TRACK_TYPE: { return "Track Type"; }
+    case MATROSKA_ID_FLAG_ENABLED: { return "Flag Enabled"; }
+    case MATROSKA_ID_FLAG_DEFAULT: { return "Flag Default"; }
+    case MATROSKA_ID_FLAG_FORCED: { return "Flag Forced"; }
+    case MATROSKA_ID_FLAG_LACING: { return "Flag Lacing"; }
+    case MATROSKA_ID_MIN_CACHE: { return "Min Cache"; }
+    case MATROSKA_ID_DEFAULT_DURATION: { return "Default Duration"; }
+    case MATROSKA_ID_TRACK_TIMECODE_SCALE: { return "Track Timecode Scale"; }
+    case MATROSKA_ID_MAX_BLOCK_ADDITION_ID: { return "Max Block Addition ID"; }
+    case MATROSKA_ID_NAME: { return "Name"; }
+    case MATROSKA_ID_LANGUAGE: { return "Language"; }
+    case MATROSKA_ID_CODEC: { return "Codec ID"; }
+    case MATROSKA_ID_CODEC_PRIVATE: { return "Codec Private"; }
+    case MATROSKA_ID_CODEC_NAME: { return "Codec Name"; }
+    case MATROSKA_ID_CODEC_DECODE_ALL: { return "Codec Decode All"; }
+    case MATROSKA_ID_VIDEO: { return "Video Settings"; }
+    case MATROSKA_ID_FLAG_INTERLACED: { return "Flag Interlaced"; }
+    case MATROSKA_ID_PIXEL_WIDTH: { return "Pixel Width"; }
+    case MATROSKA_ID_PIXEL_HEIGHT: { return "Pixel Height"; }
+    case MATROSKA_ID_DISPLAY_WIDTH: { return "Display Width"; }
+    case MATROSKA_ID_DISPLAY_HEIGHT: { return "Display Height"; }
+    case MATROSKA_ID_DISPLAY_UNIT: { return "Display Unit"; }
+    case MATROSKA_ID_AUDIO: { return "Audio Settings"; }
+    case MATROSKA_ID_SAMPLING_FREQUENCY: { return "Sampling Frequency"; }
+    case MATROSKA_ID_OUTPUT_SAMPLING_FREQUENCY: { return "Output Sampling Frequency"; }
+    case MATROSKA_ID_CHANNELS: { return "Channels"; }
+    case MATROSKA_ID_BIT_DEPTH: { return "Bit Depth"; }
+    case MATROSKA_ID_CONTENT_ENCODINGS: { return "Content Encodings"; }
+    case MATROSKA_ID_CONTENT_ENCODING: { return "Content Encoding"; }
+    case MATROSKA_ID_CONTENT_COMPRESSION: { return "Content Compression"; }
+    case MATROSKA_ID_CONTENT_COMP_ALGO: { return "Content Compression Algorithm"; }
+    case MATROSKA_ID_CONTENT_COMP_SETTINGS: { return "Content Compression Settings"; }
+    case MATROSKA_ID_CONTENT_ENCRYPTION: { return "Content Encryption"; }
+    case MATROSKA_ID_ATTACHMENTS: { return "Attachments"; }
+    case MATROSKA_ID_ATTACHED_FILE: { return "Attached File"; }
+    case MATROSKA_ID_FILE_DESCRIPTION: { return "File Description"; }
+    case MATROSKA_ID_FILE_NAME: { return "File Name"; }
+    case MATROSKA_ID_FILE_MIME_TYPE: { return "File MIME Type"; }
+    case MATROSKA_ID_FILE_DATA: { return "File Data"; }
+    case MATROSKA_ID_FILE_UID: { return "File UID"; }
+    case MATROSKA_ID_CUES: { return "Cues"; }
+    case MATROSKA_ID_CUE_POINT: { return "Cue Point"; }
+    case MATROSKA_ID_CUE_TIME: { return "Cue Time"; }
+    case MATROSKA_ID_CUE_TRACK_POSITIONS: { return "Cue Track Positions"; }
+    case MATROSKA_ID_CUE_TRACK: { return "Cue Track"; }
+    case MATROSKA_ID_CUE_CLUSTER_POSITION: { return "Cue Cluster Position"; }
+    case MATROSKA_ID_CUE_BLOCK_NUMBER: { return "Cue Block Number"; }
+    case MATROSKA_ID_TAGS: { return "Tags"; }
+    case MATROSKA_ID_SEEK_PRE_ROLL: { return "SeekPreRoll"; }
+    case MATROSKA_ID_CODEC_DELAY: { return "CodecDelay"; }
+    case MATROSKA_ID_DISCARD_PADDING: { return "DiscardPadding"; }
+    default: { return "*****unknown*****"; }
+  }
+}
+
+EBMLDataSize::EBMLDataSize()
+  : EBMLNumber(True) {
+}
+
+EBMLDataSize::~EBMLDataSize() {
+}
diff --git a/liveMedia/EBMLNumber.hh b/liveMedia/EBMLNumber.hh
new file mode 100644
index 0000000..2029da3
--- /dev/null
+++ b/liveMedia/EBMLNumber.hh
@@ -0,0 +1,144 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// EBML numbers (ids and sizes)
+// C++ header
+
+#ifndef _EBML_NUMBER_HH
+#define _EBML_NUMBER_HH
+
+#include "NetCommon.h"
+#include "Boolean.hh"
+#include <stdio.h>
+
+#define EBML_NUMBER_MAX_LEN 8
+
+class EBMLNumber {
+public:
+  EBMLNumber(Boolean stripLeading1 = True);
+  virtual ~EBMLNumber();
+
+  u_int64_t val() const;  
+  char* hexString() const; // used for debugging
+  Boolean operator==(u_int64_t arg2) const { return val() == arg2; }
+  Boolean operator!=(u_int64_t arg2) const { return !(*this == arg2); }
+
+public:
+  Boolean stripLeading1;
+  unsigned len;
+  u_int8_t data[EBML_NUMBER_MAX_LEN];
+};
+
+// Definitions of some Matroska/EBML IDs (including the ones that we check for):
+#define MATROSKA_ID_EBML 0x1A45DFA3
+#define MATROSKA_ID_VOID 0xEC
+#define MATROSKA_ID_CRC_32 0xBF
+#define MATROSKA_ID_SEGMENT 0x18538067
+#define MATROSKA_ID_SEEK_HEAD 0x114D9B74
+#define MATROSKA_ID_SEEK 0x4DBB
+#define MATROSKA_ID_SEEK_ID 0x53AB
+#define MATROSKA_ID_SEEK_POSITION 0x53AC
+#define MATROSKA_ID_INFO 0x1549A966
+#define MATROSKA_ID_SEGMENT_UID 0x73A4
+#define MATROSKA_ID_TIMECODE_SCALE 0x2AD7B1
+#define MATROSKA_ID_DURATION 0x4489
+#define MATROSKA_ID_DATE_UTC 0x4461
+#define MATROSKA_ID_TITLE 0x7BA9
+#define MATROSKA_ID_MUXING_APP 0x4D80
+#define MATROSKA_ID_WRITING_APP 0x5741
+#define MATROSKA_ID_CLUSTER 0x1F43B675
+#define MATROSKA_ID_TIMECODE 0xE7
+#define MATROSKA_ID_POSITION 0xA7
+#define MATROSKA_ID_PREV_SIZE 0xAB
+#define MATROSKA_ID_SIMPLEBLOCK 0xA3
+#define MATROSKA_ID_BLOCK_GROUP 0xA0
+#define MATROSKA_ID_BLOCK 0xA1
+#define MATROSKA_ID_BLOCK_DURATION 0x9B
+#define MATROSKA_ID_REFERENCE_BLOCK 0xFB
+#define MATROSKA_ID_TRACKS 0x1654AE6B
+#define MATROSKA_ID_TRACK_ENTRY 0xAE
+#define MATROSKA_ID_TRACK_NUMBER 0xD7
+#define MATROSKA_ID_TRACK_UID 0x73C5
+#define MATROSKA_ID_TRACK_TYPE 0x83
+#define MATROSKA_ID_FLAG_ENABLED 0xB9
+#define MATROSKA_ID_FLAG_DEFAULT 0x88
+#define MATROSKA_ID_FLAG_FORCED 0x55AA
+#define MATROSKA_ID_FLAG_LACING 0x9C
+#define MATROSKA_ID_MIN_CACHE 0x6DE7
+#define MATROSKA_ID_DEFAULT_DURATION 0x23E383
+#define MATROSKA_ID_TRACK_TIMECODE_SCALE 0x23314F
+#define MATROSKA_ID_MAX_BLOCK_ADDITION_ID 0x55EE
+#define MATROSKA_ID_NAME 0x536E
+#define MATROSKA_ID_LANGUAGE 0x22B59C
+#define MATROSKA_ID_CODEC 0x86
+#define MATROSKA_ID_CODEC_PRIVATE 0x63A2
+#define MATROSKA_ID_CODEC_NAME 0x258688
+#define MATROSKA_ID_CODEC_DECODE_ALL 0xAA
+#define MATROSKA_ID_VIDEO 0xE0
+#define MATROSKA_ID_FLAG_INTERLACED 0x9A
+#define MATROSKA_ID_PIXEL_WIDTH 0xB0
+#define MATROSKA_ID_PIXEL_HEIGHT 0xBA
+#define MATROSKA_ID_DISPLAY_WIDTH 0x54B0
+#define MATROSKA_ID_DISPLAY_HEIGHT 0x54BA
+#define MATROSKA_ID_DISPLAY_UNIT 0x54B2
+#define MATROSKA_ID_AUDIO 0xE1
+#define MATROSKA_ID_SAMPLING_FREQUENCY 0xB5
+#define MATROSKA_ID_OUTPUT_SAMPLING_FREQUENCY 0x78B5
+#define MATROSKA_ID_CHANNELS 0x9F
+#define MATROSKA_ID_BIT_DEPTH 0x6264
+#define MATROSKA_ID_CONTENT_ENCODINGS 0x6D80
+#define MATROSKA_ID_CONTENT_ENCODING 0x6240
+#define MATROSKA_ID_CONTENT_COMPRESSION 0x5034
+#define MATROSKA_ID_CONTENT_COMP_ALGO 0x4254
+#define MATROSKA_ID_CONTENT_COMP_SETTINGS 0x4255
+#define MATROSKA_ID_CONTENT_ENCRYPTION 0x5035
+#define MATROSKA_ID_ATTACHMENTS 0x1941A469
+#define MATROSKA_ID_ATTACHED_FILE 0x61A7
+#define MATROSKA_ID_FILE_DESCRIPTION 0x467E
+#define MATROSKA_ID_FILE_NAME 0x466E
+#define MATROSKA_ID_FILE_MIME_TYPE 0x4660
+#define MATROSKA_ID_FILE_DATA 0x465C
+#define MATROSKA_ID_FILE_UID 0x46AE
+#define MATROSKA_ID_CUES 0x1C53BB6B
+#define MATROSKA_ID_CUE_POINT 0xBB
+#define MATROSKA_ID_CUE_TIME 0xB3
+#define MATROSKA_ID_CUE_TRACK_POSITIONS 0xB7
+#define MATROSKA_ID_CUE_TRACK 0xF7
+#define MATROSKA_ID_CUE_CLUSTER_POSITION 0xF1
+#define MATROSKA_ID_CUE_BLOCK_NUMBER 0x5378
+#define MATROSKA_ID_TAGS 0x1254C367
+#define MATROSKA_ID_SEEK_PRE_ROLL 0x56BB
+#define MATROSKA_ID_CODEC_DELAY 0x56AA
+#define MATROSKA_ID_DISCARD_PADDING 0x75A2
+#define MATROSKA_ID_COLOR_SPACE 0x2EB524
+#define MATROSKA_ID_PRIMARIES 0x55BB
+
+class EBMLId: public EBMLNumber {
+public:
+  EBMLId();
+  virtual ~EBMLId();
+
+  char const* stringName() const; // used for debugging
+};
+
+class EBMLDataSize: public EBMLNumber {
+public:
+  EBMLDataSize();
+  virtual ~EBMLDataSize();
+};
+
+#endif
diff --git a/liveMedia/FileServerMediaSubsession.cpp b/liveMedia/FileServerMediaSubsession.cpp
new file mode 100644
index 0000000..0eefd8e
--- /dev/null
+++ b/liveMedia/FileServerMediaSubsession.cpp
@@ -0,0 +1,34 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a file.
+// Implementation
+
+#include "FileServerMediaSubsession.hh"
+
+FileServerMediaSubsession
+::FileServerMediaSubsession(UsageEnvironment& env, char const* fileName,
+			    Boolean reuseFirstSource)
+  : OnDemandServerMediaSubsession(env, reuseFirstSource),
+    fFileSize(0) {
+  fFileName = strDup(fileName);
+}
+
+FileServerMediaSubsession::~FileServerMediaSubsession() {
+  delete[] (char*)fFileName;
+}
diff --git a/liveMedia/FileSink.cpp b/liveMedia/FileSink.cpp
new file mode 100644
index 0000000..8efd90a
--- /dev/null
+++ b/liveMedia/FileSink.cpp
@@ -0,0 +1,151 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// File sinks
+// Implementation
+
+#if (defined(__WIN32__) || defined(_WIN32)) && !defined(_WIN32_WCE)
+#include <io.h>
+#include <fcntl.h>
+#endif
+#include "FileSink.hh"
+#include "GroupsockHelper.hh"
+#include "OutputFile.hh"
+
+////////// FileSink //////////
+
+FileSink::FileSink(UsageEnvironment& env, FILE* fid, unsigned bufferSize,
+		   char const* perFrameFileNamePrefix)
+  : MediaSink(env), fOutFid(fid), fBufferSize(bufferSize), fSamePresentationTimeCounter(0) {
+  fBuffer = new unsigned char[bufferSize];
+  if (perFrameFileNamePrefix != NULL) {
+    fPerFrameFileNamePrefix = strDup(perFrameFileNamePrefix);
+    fPerFrameFileNameBuffer = new char[strlen(perFrameFileNamePrefix) + 100];
+  } else {
+    fPerFrameFileNamePrefix = NULL;
+    fPerFrameFileNameBuffer = NULL;
+  }
+  fPrevPresentationTime.tv_sec = ~0; fPrevPresentationTime.tv_usec = 0;
+}
+
+FileSink::~FileSink() {
+  delete[] fPerFrameFileNameBuffer;
+  delete[] fPerFrameFileNamePrefix;
+  delete[] fBuffer;
+  if (fOutFid != NULL) fclose(fOutFid);
+}
+
+FileSink* FileSink::createNew(UsageEnvironment& env, char const* fileName,
+			      unsigned bufferSize, Boolean oneFilePerFrame) {
+  do {
+    FILE* fid;
+    char const* perFrameFileNamePrefix;
+    if (oneFilePerFrame) {
+      // Create the fid for each frame
+      fid = NULL;
+      perFrameFileNamePrefix = fileName;
+    } else {
+      // Normal case: create the fid once
+      fid = OpenOutputFile(env, fileName);
+      if (fid == NULL) break;
+      perFrameFileNamePrefix = NULL;
+    }
+
+    return new FileSink(env, fid, bufferSize, perFrameFileNamePrefix);
+  } while (0);
+
+  return NULL;
+}
+
+Boolean FileSink::continuePlaying() {
+  if (fSource == NULL) return False;
+
+  fSource->getNextFrame(fBuffer, fBufferSize,
+			afterGettingFrame, this,
+			onSourceClosure, this);
+
+  return True;
+}
+
+void FileSink::afterGettingFrame(void* clientData, unsigned frameSize,
+				 unsigned numTruncatedBytes,
+				 struct timeval presentationTime,
+				 unsigned /*durationInMicroseconds*/) {
+  FileSink* sink = (FileSink*)clientData;
+  sink->afterGettingFrame(frameSize, numTruncatedBytes, presentationTime);
+}
+
+void FileSink::addData(unsigned char const* data, unsigned dataSize,
+		       struct timeval presentationTime) {
+  if (fPerFrameFileNameBuffer != NULL && fOutFid == NULL) {
+    // Special case: Open a new file on-the-fly for this frame
+    if (presentationTime.tv_usec == fPrevPresentationTime.tv_usec &&
+	presentationTime.tv_sec == fPrevPresentationTime.tv_sec) {
+      // The presentation time is unchanged from the previous frame, so we add a 'counter'
+      // suffix to the file name, to distinguish them:
+      sprintf(fPerFrameFileNameBuffer, "%s-%lu.%06lu-%u", fPerFrameFileNamePrefix,
+	      presentationTime.tv_sec, presentationTime.tv_usec, ++fSamePresentationTimeCounter);
+    } else {
+      sprintf(fPerFrameFileNameBuffer, "%s-%lu.%06lu", fPerFrameFileNamePrefix,
+	      presentationTime.tv_sec, presentationTime.tv_usec);
+      fPrevPresentationTime = presentationTime; // for next time
+      fSamePresentationTimeCounter = 0; // for next time
+    }
+    fOutFid = OpenOutputFile(envir(), fPerFrameFileNameBuffer);
+  }
+
+  // Write to our file:
+#ifdef TEST_LOSS
+  static unsigned const framesPerPacket = 10;
+  static unsigned const frameCount = 0;
+  static Boolean const packetIsLost;
+  if ((frameCount++)%framesPerPacket == 0) {
+    packetIsLost = (our_random()%10 == 0); // simulate 10% packet loss #####
+  }
+
+  if (!packetIsLost)
+#endif
+  if (fOutFid != NULL && data != NULL) {
+    fwrite(data, 1, dataSize, fOutFid);
+  }
+}
+
+void FileSink::afterGettingFrame(unsigned frameSize,
+				 unsigned numTruncatedBytes,
+				 struct timeval presentationTime) {
+  if (numTruncatedBytes > 0) {
+    envir() << "FileSink::afterGettingFrame(): The input frame data was too large for our buffer size ("
+	    << fBufferSize << ").  "
+            << numTruncatedBytes << " bytes of trailing data was dropped!  Correct this by increasing the \"bufferSize\" parameter in the \"createNew()\" call to at least "
+            << fBufferSize + numTruncatedBytes << "\n";
+  }
+  addData(fBuffer, frameSize, presentationTime);
+
+  if (fOutFid == NULL || fflush(fOutFid) == EOF) {
+    // The output file has closed.  Handle this the same way as if the input source had closed:
+    if (fSource != NULL) fSource->stopGettingFrames();
+    onSourceClosure();
+    return;
+  }
+
+  if (fPerFrameFileNameBuffer != NULL) {
+    if (fOutFid != NULL) { fclose(fOutFid); fOutFid = NULL; }
+  }
+
+  // Then try getting the next frame:
+  continuePlaying();
+}
diff --git a/liveMedia/FramedFileSource.cpp b/liveMedia/FramedFileSource.cpp
new file mode 100644
index 0000000..9f0f033
--- /dev/null
+++ b/liveMedia/FramedFileSource.cpp
@@ -0,0 +1,30 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Framed File Sources
+// Implementation
+
+#include "FramedFileSource.hh"
+
+////////// FramedFileSource //////////
+
+FramedFileSource::FramedFileSource(UsageEnvironment& env, FILE* fid)
+  : FramedSource(env), fFid(fid) {
+}
+
+FramedFileSource::~FramedFileSource() {
+}
diff --git a/liveMedia/FramedFilter.cpp b/liveMedia/FramedFilter.cpp
new file mode 100644
index 0000000..4b64372
--- /dev/null
+++ b/liveMedia/FramedFilter.cpp
@@ -0,0 +1,59 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Framed Filters
+// Implementation
+
+#include "FramedFilter.hh"
+
+////////// FramedFilter //////////
+#include <string.h>
+
+void FramedFilter::detachInputSource() {
+  if (fInputSource != NULL) {
+    fInputSource->stopGettingFrames();
+    reassignInputSource(NULL);
+  }
+}
+
+FramedFilter::FramedFilter(UsageEnvironment& env,
+			   FramedSource* inputSource)
+  : FramedSource(env),
+    fInputSource(inputSource) {
+}
+
+FramedFilter::~FramedFilter() {
+  Medium::close(fInputSource);
+}
+
+// Default implementations of needed virtual functions.  These merely
+// call the same function in the input source - i.e., act like a 'null filter
+
+char const* FramedFilter::MIMEtype() const {
+  if (fInputSource == NULL) return "";
+
+  return fInputSource->MIMEtype();
+}
+
+void FramedFilter::getAttributes() const {
+  if (fInputSource != NULL) fInputSource->getAttributes();
+}
+
+void FramedFilter::doStopGettingFrames() {
+  FramedSource::doStopGettingFrames();
+  if (fInputSource != NULL) fInputSource->stopGettingFrames();
+}
diff --git a/liveMedia/FramedSource.cpp b/liveMedia/FramedSource.cpp
new file mode 100644
index 0000000..f572492
--- /dev/null
+++ b/liveMedia/FramedSource.cpp
@@ -0,0 +1,126 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Framed Sources
+// Implementation
+
+#include "FramedSource.hh"
+#include <stdlib.h>
+
+////////// FramedSource //////////
+
+FramedSource::FramedSource(UsageEnvironment& env)
+  : MediaSource(env),
+    fAfterGettingFunc(NULL), fAfterGettingClientData(NULL),
+    fOnCloseFunc(NULL), fOnCloseClientData(NULL),
+    fIsCurrentlyAwaitingData(False) {
+  fPresentationTime.tv_sec = fPresentationTime.tv_usec = 0; // initially
+}
+
+FramedSource::~FramedSource() {
+}
+
+Boolean FramedSource::isFramedSource() const {
+  return True;
+}
+
+Boolean FramedSource::lookupByName(UsageEnvironment& env, char const* sourceName,
+				   FramedSource*& resultSource) {
+  resultSource = NULL; // unless we succeed
+
+  MediaSource* source;
+  if (!MediaSource::lookupByName(env, sourceName, source)) return False;
+
+  if (!source->isFramedSource()) {
+    env.setResultMsg(sourceName, " is not a framed source");
+    return False;
+  }
+
+  resultSource = (FramedSource*)source;
+  return True;
+}
+
+void FramedSource::getNextFrame(unsigned char* to, unsigned maxSize,
+				afterGettingFunc* afterGettingFunc,
+				void* afterGettingClientData,
+				onCloseFunc* onCloseFunc,
+				void* onCloseClientData) {
+  // Make sure we're not already being read:
+  if (fIsCurrentlyAwaitingData) {
+    envir() << "FramedSource[" << this << "]::getNextFrame(): attempting to read more than once at the same time!\n";
+    envir().internalError();
+  }
+
+  fTo = to;
+  fMaxSize = maxSize;
+  fNumTruncatedBytes = 0; // by default; could be changed by doGetNextFrame()
+  fDurationInMicroseconds = 0; // by default; could be changed by doGetNextFrame()
+  fAfterGettingFunc = afterGettingFunc;
+  fAfterGettingClientData = afterGettingClientData;
+  fOnCloseFunc = onCloseFunc;
+  fOnCloseClientData = onCloseClientData;
+  fIsCurrentlyAwaitingData = True;
+
+  doGetNextFrame();
+}
+
+void FramedSource::afterGetting(FramedSource* source) {
+  source->nextTask() = NULL;
+  source->fIsCurrentlyAwaitingData = False;
+      // indicates that we can be read again
+      // Note that this needs to be done here, in case the "fAfterFunc"
+      // called below tries to read another frame (which it usually will)
+
+  if (source->fAfterGettingFunc != NULL) {
+    (*(source->fAfterGettingFunc))(source->fAfterGettingClientData,
+				   source->fFrameSize, source->fNumTruncatedBytes,
+				   source->fPresentationTime,
+				   source->fDurationInMicroseconds);
+  }
+}
+
+void FramedSource::handleClosure(void* clientData) {
+  FramedSource* source = (FramedSource*)clientData;
+  source->handleClosure();
+}
+
+void FramedSource::handleClosure() {
+  fIsCurrentlyAwaitingData = False; // because we got a close instead
+  if (fOnCloseFunc != NULL) {
+    (*fOnCloseFunc)(fOnCloseClientData);
+  }
+}
+
+void FramedSource::stopGettingFrames() {
+  fIsCurrentlyAwaitingData = False; // indicates that we can be read again
+  fAfterGettingFunc = NULL;
+  fOnCloseFunc = NULL;
+
+  // Perform any specialized action now:
+  doStopGettingFrames();
+}
+
+void FramedSource::doStopGettingFrames() {
+  // Default implementation: Do nothing except cancel any pending 'delivery' task:
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+  // Subclasses may wish to redefine this function.
+}
+
+unsigned FramedSource::maxFrameSize() const {
+  // By default, this source has no maximum frame size.
+  return 0;
+}
diff --git a/liveMedia/GSMAudioRTPSink.cpp b/liveMedia/GSMAudioRTPSink.cpp
new file mode 100644
index 0000000..ac6ae99
--- /dev/null
+++ b/liveMedia/GSMAudioRTPSink.cpp
@@ -0,0 +1,40 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for GSM audio
+// Implementation
+
+#include "GSMAudioRTPSink.hh"
+
+GSMAudioRTPSink::GSMAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs)
+  : AudioRTPSink(env, RTPgs, 3, 8000, "GSM") {
+}
+
+GSMAudioRTPSink::~GSMAudioRTPSink() {
+}
+
+GSMAudioRTPSink*
+GSMAudioRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs) {
+  return new GSMAudioRTPSink(env, RTPgs);
+}
+
+Boolean GSMAudioRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+				 unsigned /*numBytesInFrame*/) const {
+  // Allow at most 5 frames in a single packet:
+  return numFramesUsedSoFar() < 5;
+}
diff --git a/liveMedia/GenericMediaServer.cpp b/liveMedia/GenericMediaServer.cpp
new file mode 100644
index 0000000..0210a74
--- /dev/null
+++ b/liveMedia/GenericMediaServer.cpp
@@ -0,0 +1,405 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic media server class, used to implement a RTSP server, and any other server that uses
+//  "ServerMediaSession" objects to describe media to be served.
+// Implementation
+
+#include "GenericMediaServer.hh"
+#include <GroupsockHelper.hh>
+#if defined(__WIN32__) || defined(_WIN32) || defined(_QNX4)
+#define snprintf _snprintf
+#endif
+
+////////// GenericMediaServer implementation //////////
+
+void GenericMediaServer::addServerMediaSession(ServerMediaSession* serverMediaSession) {
+  if (serverMediaSession == NULL) return;
+  
+  char const* sessionName = serverMediaSession->streamName();
+  if (sessionName == NULL) sessionName = "";
+  removeServerMediaSession(sessionName); // in case an existing "ServerMediaSession" with this name already exists
+  
+  fServerMediaSessions->Add(sessionName, (void*)serverMediaSession);
+}
+
+ServerMediaSession* GenericMediaServer
+::lookupServerMediaSession(char const* streamName, Boolean /*isFirstLookupInSession*/) {
+  // Default implementation:
+  return (ServerMediaSession*)(fServerMediaSessions->Lookup(streamName));
+}
+
+void GenericMediaServer::removeServerMediaSession(ServerMediaSession* serverMediaSession) {
+  if (serverMediaSession == NULL) return;
+  
+  fServerMediaSessions->Remove(serverMediaSession->streamName());
+  if (serverMediaSession->referenceCount() == 0) {
+    Medium::close(serverMediaSession);
+  } else {
+    serverMediaSession->deleteWhenUnreferenced() = True;
+  }
+}
+
+void GenericMediaServer::removeServerMediaSession(char const* streamName) {
+  removeServerMediaSession(GenericMediaServer::lookupServerMediaSession(streamName));
+}
+
+void GenericMediaServer::closeAllClientSessionsForServerMediaSession(ServerMediaSession* serverMediaSession) {
+  if (serverMediaSession == NULL) return;
+  
+  HashTable::Iterator* iter = HashTable::Iterator::create(*fClientSessions);
+  GenericMediaServer::ClientSession* clientSession;
+  char const* key; // dummy
+  while ((clientSession = (GenericMediaServer::ClientSession*)(iter->next(key))) != NULL) {
+    if (clientSession->fOurServerMediaSession == serverMediaSession) {
+      delete clientSession;
+    }
+  }
+  delete iter;
+}
+
+void GenericMediaServer::closeAllClientSessionsForServerMediaSession(char const* streamName) {
+  closeAllClientSessionsForServerMediaSession(lookupServerMediaSession(streamName));
+}
+
+void GenericMediaServer::deleteServerMediaSession(ServerMediaSession* serverMediaSession) {
+  if (serverMediaSession == NULL) return;
+  
+  closeAllClientSessionsForServerMediaSession(serverMediaSession);
+  removeServerMediaSession(serverMediaSession);
+}
+
+void GenericMediaServer::deleteServerMediaSession(char const* streamName) {
+  deleteServerMediaSession(lookupServerMediaSession(streamName));
+}
+
+GenericMediaServer
+::GenericMediaServer(UsageEnvironment& env, int ourSocket, Port ourPort,
+		     unsigned reclamationSeconds)
+  : Medium(env),
+    fServerSocket(ourSocket), fServerPort(ourPort), fReclamationSeconds(reclamationSeconds),
+    fServerMediaSessions(HashTable::create(STRING_HASH_KEYS)),
+    fClientConnections(HashTable::create(ONE_WORD_HASH_KEYS)),
+    fClientSessions(HashTable::create(STRING_HASH_KEYS)),
+    fPreviousClientSessionId(0)
+{
+  ignoreSigPipeOnSocket(fServerSocket); // so that clients on the same host that are killed don't also kill us
+  
+  // Arrange to handle connections from others:
+  env.taskScheduler().turnOnBackgroundReadHandling(fServerSocket, incomingConnectionHandler, this);
+}
+
+GenericMediaServer::~GenericMediaServer() {
+  // Turn off background read handling:
+  envir().taskScheduler().turnOffBackgroundReadHandling(fServerSocket);
+  ::closeSocket(fServerSocket);
+}
+
+void GenericMediaServer::cleanup() {
+  // This member function must be called in the destructor of any subclass of
+  // "GenericMediaServer".  (We don't call this in the destructor of "GenericMediaServer" itself,
+  // because by that time, the subclass destructor will already have been called, and this may
+  // affect (break) the destruction of the "ClientSession" and "ClientConnection" objects, which
+  // themselves will have been subclassed.)
+
+  // Close all client session objects:
+  GenericMediaServer::ClientSession* clientSession;
+  while ((clientSession = (GenericMediaServer::ClientSession*)fClientSessions->getFirst()) != NULL) {
+    delete clientSession;
+  }
+  delete fClientSessions;
+  
+  // Close all client connection objects:
+  GenericMediaServer::ClientConnection* connection;
+  while ((connection = (GenericMediaServer::ClientConnection*)fClientConnections->getFirst()) != NULL) {
+    delete connection;
+  }
+  delete fClientConnections;
+  
+  // Delete all server media sessions
+  ServerMediaSession* serverMediaSession;
+  while ((serverMediaSession = (ServerMediaSession*)fServerMediaSessions->getFirst()) != NULL) {
+    removeServerMediaSession(serverMediaSession); // will delete it, because it no longer has any 'client session' objects using it
+  }
+  delete fServerMediaSessions;
+}
+
+#define LISTEN_BACKLOG_SIZE 20
+
+int GenericMediaServer::setUpOurSocket(UsageEnvironment& env, Port& ourPort) {
+  int ourSocket = -1;
+  
+  do {
+    // The following statement is enabled by default.
+    // Don't disable it (by defining ALLOW_SERVER_PORT_REUSE) unless you know what you're doing.
+#if !defined(ALLOW_SERVER_PORT_REUSE) && !defined(ALLOW_RTSP_SERVER_PORT_REUSE)
+    // ALLOW_RTSP_SERVER_PORT_REUSE is for backwards-compatibility #####
+    NoReuse dummy(env); // Don't use this socket if there's already a local server using it
+#endif
+    
+    ourSocket = setupStreamSocket(env, ourPort, True, True);
+    if (ourSocket < 0) break;
+    
+    // Make sure we have a big send buffer:
+    if (!increaseSendBufferTo(env, ourSocket, 50*1024)) break;
+    
+    // Allow multiple simultaneous connections:
+    if (listen(ourSocket, LISTEN_BACKLOG_SIZE) < 0) {
+      env.setResultErrMsg("listen() failed: ");
+      break;
+    }
+    
+    if (ourPort.num() == 0) {
+      // bind() will have chosen a port for us; return it also:
+      if (!getSourcePort(env, ourSocket, ourPort)) break;
+    }
+    
+    return ourSocket;
+  } while (0);
+  
+  if (ourSocket != -1) ::closeSocket(ourSocket);
+  return -1;
+}
+
+void GenericMediaServer::incomingConnectionHandler(void* instance, int /*mask*/) {
+  GenericMediaServer* server = (GenericMediaServer*)instance;
+  server->incomingConnectionHandler();
+}
+void GenericMediaServer::incomingConnectionHandler() {
+  incomingConnectionHandlerOnSocket(fServerSocket);
+}
+
+void GenericMediaServer::incomingConnectionHandlerOnSocket(int serverSocket) {
+  struct sockaddr_in clientAddr;
+  SOCKLEN_T clientAddrLen = sizeof clientAddr;
+  int clientSocket = accept(serverSocket, (struct sockaddr*)&clientAddr, &clientAddrLen);
+  if (clientSocket < 0) {
+    int err = envir().getErrno();
+    if (err != EWOULDBLOCK) {
+      envir().setResultErrMsg("accept() failed: ");
+    }
+    return;
+  }
+  ignoreSigPipeOnSocket(clientSocket); // so that clients on the same host that are killed don't also kill us
+  makeSocketNonBlocking(clientSocket);
+  increaseSendBufferTo(envir(), clientSocket, 50*1024);
+  
+#ifdef DEBUG
+  envir() << "accept()ed connection from " << AddressString(clientAddr).val() << "\n";
+#endif
+  
+  // Create a new object for handling this connection:
+  (void)createNewClientConnection(clientSocket, clientAddr);
+}
+
+
+////////// GenericMediaServer::ClientConnection implementation //////////
+
+GenericMediaServer::ClientConnection
+::ClientConnection(GenericMediaServer& ourServer, int clientSocket, struct sockaddr_in clientAddr)
+  : fOurServer(ourServer), fOurSocket(clientSocket), fClientAddr(clientAddr) {
+  // Add ourself to our 'client connections' table:
+  fOurServer.fClientConnections->Add((char const*)this, this);
+  
+  // Arrange to handle incoming requests:
+  resetRequestBuffer();
+  envir().taskScheduler()
+    .setBackgroundHandling(fOurSocket, SOCKET_READABLE|SOCKET_EXCEPTION, incomingRequestHandler, this);
+}
+
+GenericMediaServer::ClientConnection::~ClientConnection() {
+  // Remove ourself from the server's 'client connections' hash table before we go:
+  fOurServer.fClientConnections->Remove((char const*)this);
+  
+  closeSockets();
+}
+
+void GenericMediaServer::ClientConnection::closeSockets() {
+  // Turn off background handling on our socket:
+  envir().taskScheduler().disableBackgroundHandling(fOurSocket);
+  if (fOurSocket>= 0) ::closeSocket(fOurSocket);
+
+  fOurSocket = -1;
+}
+
+void GenericMediaServer::ClientConnection::incomingRequestHandler(void* instance, int /*mask*/) {
+  ClientConnection* connection = (ClientConnection*)instance;
+  connection->incomingRequestHandler();
+}
+
+void GenericMediaServer::ClientConnection::incomingRequestHandler() {
+  struct sockaddr_in dummy; // 'from' address, meaningless in this case
+  
+  int bytesRead = readSocket(envir(), fOurSocket, &fRequestBuffer[fRequestBytesAlreadySeen], fRequestBufferBytesLeft, dummy);
+  handleRequestBytes(bytesRead);
+}
+
+void GenericMediaServer::ClientConnection::resetRequestBuffer() {
+  fRequestBytesAlreadySeen = 0;
+  fRequestBufferBytesLeft = sizeof fRequestBuffer;
+}
+
+
+////////// GenericMediaServer::ClientSession implementation //////////
+
+GenericMediaServer::ClientSession
+::ClientSession(GenericMediaServer& ourServer, u_int32_t sessionId)
+  : fOurServer(ourServer), fOurSessionId(sessionId), fOurServerMediaSession(NULL),
+    fLivenessCheckTask(NULL) {
+  noteLiveness();
+}
+
+GenericMediaServer::ClientSession::~ClientSession() {
+  // Turn off any liveness checking:
+  envir().taskScheduler().unscheduleDelayedTask(fLivenessCheckTask);
+
+  // Remove ourself from the server's 'client sessions' hash table before we go:
+  char sessionIdStr[8+1];
+  sprintf(sessionIdStr, "%08X", fOurSessionId);
+  fOurServer.fClientSessions->Remove(sessionIdStr);
+  
+  if (fOurServerMediaSession != NULL) {
+    fOurServerMediaSession->decrementReferenceCount();
+    if (fOurServerMediaSession->referenceCount() == 0
+	&& fOurServerMediaSession->deleteWhenUnreferenced()) {
+      fOurServer.removeServerMediaSession(fOurServerMediaSession);
+      fOurServerMediaSession = NULL;
+    }
+  }
+}
+
+void GenericMediaServer::ClientSession::noteLiveness() {
+#ifdef DEBUG
+  char const* streamName
+    = (fOurServerMediaSession == NULL) ? "???" : fOurServerMediaSession->streamName();
+  fprintf(stderr, "Client session (id \"%08X\", stream name \"%s\"): Liveness indication\n",
+	  fOurSessionId, streamName);
+#endif
+  if (fOurServerMediaSession != NULL) fOurServerMediaSession->noteLiveness();
+
+  if (fOurServer.fReclamationSeconds > 0) {
+    envir().taskScheduler().rescheduleDelayedTask(fLivenessCheckTask,
+						  fOurServer.fReclamationSeconds*1000000,
+						  (TaskFunc*)livenessTimeoutTask, this);
+  }
+}
+
+void GenericMediaServer::ClientSession::noteClientLiveness(ClientSession* clientSession) {
+  clientSession->noteLiveness();
+}
+
+void GenericMediaServer::ClientSession::livenessTimeoutTask(ClientSession* clientSession) {
+  // If this gets called, the client session is assumed to have timed out, so delete it:
+#ifdef DEBUG
+  char const* streamName
+    = (clientSession->fOurServerMediaSession == NULL) ? "???" : clientSession->fOurServerMediaSession->streamName();
+  fprintf(stderr, "Client session (id \"%08X\", stream name \"%s\") has timed out (due to inactivity)\n",
+	  clientSession->fOurSessionId, streamName);
+#endif
+  clientSession->fLivenessCheckTask = NULL;
+  delete clientSession;
+}
+
+GenericMediaServer::ClientSession* GenericMediaServer::createNewClientSessionWithId() {
+  u_int32_t sessionId;
+  char sessionIdStr[8+1];
+
+  // Choose a random (unused) 32-bit integer for the session id
+  // (it will be encoded as a 8-digit hex number).  (We avoid choosing session id 0,
+  // because that has a special use by some servers.  Similarly, we avoid choosing the same
+  // session id twice in a row.)
+  do {
+    sessionId = (u_int32_t)our_random32();
+    snprintf(sessionIdStr, sizeof sessionIdStr, "%08X", sessionId);
+  } while (sessionId == 0 || sessionId == fPreviousClientSessionId
+	   || lookupClientSession(sessionIdStr) != NULL);
+  fPreviousClientSessionId = sessionId;
+
+  ClientSession* clientSession = createNewClientSession(sessionId);
+  if (clientSession != NULL) fClientSessions->Add(sessionIdStr, clientSession);
+
+  return clientSession;
+}
+
+GenericMediaServer::ClientSession*
+GenericMediaServer::lookupClientSession(u_int32_t sessionId) {
+  char sessionIdStr[8+1];
+  snprintf(sessionIdStr, sizeof sessionIdStr, "%08X", sessionId);
+  return lookupClientSession(sessionIdStr);
+}
+
+GenericMediaServer::ClientSession*
+GenericMediaServer::lookupClientSession(char const* sessionIdStr) {
+  return (GenericMediaServer::ClientSession*)fClientSessions->Lookup(sessionIdStr);
+}
+
+
+////////// ServerMediaSessionIterator implementation //////////
+
+GenericMediaServer::ServerMediaSessionIterator
+::ServerMediaSessionIterator(GenericMediaServer& server)
+  : fOurIterator((server.fServerMediaSessions == NULL)
+		 ? NULL : HashTable::Iterator::create(*server.fServerMediaSessions)) {
+}
+
+GenericMediaServer::ServerMediaSessionIterator::~ServerMediaSessionIterator() {
+  delete fOurIterator;
+}
+
+ServerMediaSession* GenericMediaServer::ServerMediaSessionIterator::next() {
+  if (fOurIterator == NULL) return NULL;
+
+  char const* key; // dummy
+  return (ServerMediaSession*)(fOurIterator->next(key));
+}
+
+
+////////// UserAuthenticationDatabase implementation //////////
+
+UserAuthenticationDatabase::UserAuthenticationDatabase(char const* realm,
+						       Boolean passwordsAreMD5)
+  : fTable(HashTable::create(STRING_HASH_KEYS)),
+    fRealm(strDup(realm == NULL ? "LIVE555 Streaming Media" : realm)),
+    fPasswordsAreMD5(passwordsAreMD5) {
+}
+
+UserAuthenticationDatabase::~UserAuthenticationDatabase() {
+  delete[] fRealm;
+  
+  // Delete the allocated 'password' strings that we stored in the table, and then the table itself:
+  char* password;
+  while ((password = (char*)fTable->RemoveNext()) != NULL) {
+    delete[] password;
+  }
+  delete fTable;
+}
+
+void UserAuthenticationDatabase::addUserRecord(char const* username,
+					       char const* password) {
+  char* oldPassword = (char*)fTable->Add(username, (void*)(strDup(password)));
+  delete[] oldPassword; // if any
+}
+
+void UserAuthenticationDatabase::removeUserRecord(char const* username) {
+  char* password = (char*)(fTable->Lookup(username));
+  fTable->Remove(username);
+  delete[] password;
+}
+
+char const* UserAuthenticationDatabase::lookupPassword(char const* username) {
+  return (char const*)(fTable->Lookup(username));
+}
diff --git a/liveMedia/H261VideoRTPSource.cpp b/liveMedia/H261VideoRTPSource.cpp
new file mode 100644
index 0000000..0544ea5
--- /dev/null
+++ b/liveMedia/H261VideoRTPSource.cpp
@@ -0,0 +1,67 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.261 Video RTP Sources
+// Implementation
+
+#include "H261VideoRTPSource.hh"
+
+H261VideoRTPSource*
+H261VideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				  unsigned char rtpPayloadFormat,
+				  unsigned rtpTimestampFrequency) {
+  return new H261VideoRTPSource(env, RTPgs, rtpPayloadFormat,
+				    rtpTimestampFrequency);
+}
+
+H261VideoRTPSource
+::H261VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			 unsigned char rtpPayloadFormat,
+			 unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs,
+			 rtpPayloadFormat, rtpTimestampFrequency),
+  fLastSpecialHeader(0) {
+}
+
+H261VideoRTPSource::~H261VideoRTPSource() {
+}
+
+Boolean H261VideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+  // There's a 4-byte video-specific header
+  if (packet->dataSize() < 4) return False;
+
+  unsigned char* headerStart = packet->data();
+  fLastSpecialHeader
+    = (headerStart[0]<<24)|(headerStart[1]<<16)|(headerStart[2]<<8)|headerStart[3];
+
+#ifdef DELIVER_COMPLETE_FRAMES
+  fCurrentPacketBeginsFrame = fCurrentPacketCompletesFrame;
+  // whether the *previous* packet ended a frame
+
+  // The RTP "M" (marker) bit indicates the last fragment of a frame:
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
+#endif
+
+  resultSpecialHeaderSize = 4;
+  return True;
+}
+
+char const* H261VideoRTPSource::MIMEtype() const {
+  return "video/H261";
+}
diff --git a/liveMedia/H263plusVideoFileServerMediaSubsession.cpp b/liveMedia/H263plusVideoFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..71c7d32
--- /dev/null
+++ b/liveMedia/H263plusVideoFileServerMediaSubsession.cpp
@@ -0,0 +1,64 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a H263 video file.
+// Implementation
+
+// Author: Bernhard Feiten. // Based on MPEG4VideoFileServerMediaSubsession
+// Updated by Ross FInlayson (December 2007)
+
+#include "H263plusVideoFileServerMediaSubsession.hh"
+#include "H263plusVideoRTPSink.hh"
+#include "ByteStreamFileSource.hh"
+#include "H263plusVideoStreamFramer.hh"
+
+H263plusVideoFileServerMediaSubsession*
+H263plusVideoFileServerMediaSubsession::createNew(UsageEnvironment& env,
+						  char const* fileName,
+						  Boolean reuseFirstSource) {
+  return new H263plusVideoFileServerMediaSubsession(env, fileName, reuseFirstSource);
+}
+
+H263plusVideoFileServerMediaSubsession
+::H263plusVideoFileServerMediaSubsession(UsageEnvironment& env,
+					 char const* fileName,
+					 Boolean reuseFirstSource)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource) {
+}
+
+H263plusVideoFileServerMediaSubsession::~H263plusVideoFileServerMediaSubsession() {
+}
+
+FramedSource* H263plusVideoFileServerMediaSubsession
+::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  estBitrate = 500; // kbps, estimate ??
+
+  // Create the video source:
+  ByteStreamFileSource* fileSource = ByteStreamFileSource::createNew(envir(), fFileName);
+  if (fileSource == NULL) return NULL;
+  fFileSize = fileSource->fileSize();
+
+  // Create a framer for the Video Elementary Stream:
+  return H263plusVideoStreamFramer::createNew(envir(), fileSource);
+}
+
+RTPSink* H263plusVideoFileServerMediaSubsession::createNewRTPSink(Groupsock* rtpGroupsock,
+								  unsigned char rtpPayloadTypeIfDynamic,
+								  FramedSource* /*inputSource*/) {
+  return H263plusVideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+}
diff --git a/liveMedia/H263plusVideoRTPSink.cpp b/liveMedia/H263plusVideoRTPSink.cpp
new file mode 100644
index 0000000..595177c
--- /dev/null
+++ b/liveMedia/H263plusVideoRTPSink.cpp
@@ -0,0 +1,91 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for H.263+ video (RFC 4629)
+// Implementation
+
+#include "H263plusVideoRTPSink.hh"
+
+H263plusVideoRTPSink
+::H263plusVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		       unsigned char rtpPayloadFormat,
+		       u_int32_t rtpTimestampFrequency)
+  : VideoRTPSink(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency, "H263-1998") {
+}
+
+H263plusVideoRTPSink::~H263plusVideoRTPSink() {
+}
+
+H263plusVideoRTPSink*
+H263plusVideoRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				unsigned char rtpPayloadFormat,
+				u_int32_t rtpTimestampFrequency) {
+  return new H263plusVideoRTPSink(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency);
+}
+
+Boolean H263plusVideoRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+				 unsigned /*numBytesInFrame*/) const {
+  // A packet can contain only one frame
+  return False;
+}
+
+void H263plusVideoRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* frameStart,
+			 unsigned numBytesInFrame,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  if (fragmentationOffset == 0) {
+    // This packet contains the first (or only) fragment of the frame.
+    // Set the 'P' bit in the special header:
+    unsigned short specialHeader = 0x0400;
+
+    // Also, reuse the first two bytes of the payload for this special
+    // header.  (They should both have been zero.)
+    if (numBytesInFrame < 2) {
+      envir() << "H263plusVideoRTPSink::doSpecialFrameHandling(): bad frame size "
+	      << numBytesInFrame << "\n";
+      return;
+    }
+    if (frameStart[0] != 0 || frameStart[1] != 0) {
+      envir() << "H263plusVideoRTPSink::doSpecialFrameHandling(): unexpected non-zero first two bytes!\n";
+    }
+    frameStart[0] = specialHeader>>8;
+    frameStart[1] = (unsigned char)specialHeader;
+  } else {
+    unsigned short specialHeader = 0;
+    setSpecialHeaderBytes((unsigned char*)&specialHeader, 2);
+  }
+
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit:
+    setMarkerBit();
+  }
+
+  // Also set the RTP timestamp:
+  setTimestamp(framePresentationTime);
+}
+
+
+unsigned H263plusVideoRTPSink::specialHeaderSize() const {
+  // There's a 2-byte special video header.  However, if we're the first
+  // (or only) fragment of a frame, then we reuse the first 2 bytes of
+  // the payload instead.
+  return (curFragmentationOffset() == 0) ? 0 : 2;
+}
diff --git a/liveMedia/H263plusVideoRTPSource.cpp b/liveMedia/H263plusVideoRTPSource.cpp
new file mode 100644
index 0000000..c5fc2ba
--- /dev/null
+++ b/liveMedia/H263plusVideoRTPSource.cpp
@@ -0,0 +1,106 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.263+ Video RTP Sources
+// Implementation
+
+#include "H263plusVideoRTPSource.hh"
+
+H263plusVideoRTPSource*
+H263plusVideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				  unsigned char rtpPayloadFormat,
+				  unsigned rtpTimestampFrequency) {
+  return new H263plusVideoRTPSource(env, RTPgs, rtpPayloadFormat,
+				    rtpTimestampFrequency);
+}
+
+H263plusVideoRTPSource
+::H263plusVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			 unsigned char rtpPayloadFormat,
+			 unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs,
+			 rtpPayloadFormat, rtpTimestampFrequency),
+  fNumSpecialHeaders(0), fSpecialHeaderBytesLength(0) {
+}
+
+H263plusVideoRTPSource::~H263plusVideoRTPSource() {
+}
+
+Boolean H263plusVideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  // The H.263+ payload header is at least 2 bytes in size.
+  // Extract the known fields from the first 2 bytes:
+  unsigned expectedHeaderSize = 2;
+  if (packetSize < expectedHeaderSize) return False;
+
+  //unsigned char RR = headerStart[0]>>3;
+  Boolean P = (headerStart[0]&0x4) != 0;
+  Boolean V = (headerStart[0]&0x2) != 0;
+  unsigned char PLEN = ((headerStart[0]&0x1)<<5)|(headerStart[1]>>3);
+  //unsigned char PEBIT = headerStart[1]&0x7;
+
+  if (V) {
+    // There's an extra VRC byte at the end of the header:
+    ++expectedHeaderSize;
+    if (packetSize < expectedHeaderSize) return False;
+  }
+
+  if (PLEN > 0) {
+    // There's an extra picture header at the end:
+    expectedHeaderSize += PLEN;
+    if (packetSize < expectedHeaderSize) return False;
+  }
+
+  fCurrentPacketBeginsFrame = P;
+  if (fCurrentPacketBeginsFrame) {
+    fNumSpecialHeaders = fSpecialHeaderBytesLength = 0;
+  }
+
+  // Make a copy of the special header bytes, in case a reader
+  // can use them:
+  unsigned bytesAvailable
+    = SPECIAL_HEADER_BUFFER_SIZE - fSpecialHeaderBytesLength - 1;
+  if (expectedHeaderSize <= bytesAvailable) {
+    fSpecialHeaderBytes[fSpecialHeaderBytesLength++] = expectedHeaderSize;
+    for (unsigned i = 0; i < expectedHeaderSize; ++i) {
+      fSpecialHeaderBytes[fSpecialHeaderBytesLength++] = headerStart[i];
+    }
+    fPacketSizes[fNumSpecialHeaders++] = packetSize;
+  }
+
+  if (P) {
+    // Prepend two zero bytes to the start of the payload proper.
+    // Hack: Do this by shrinking this special header by 2 bytes:
+    expectedHeaderSize -= 2;
+    headerStart[expectedHeaderSize] = 0;
+    headerStart[expectedHeaderSize+1] = 0;
+  }
+
+  // The RTP "M" (marker) bit indicates the last fragment of a frame:
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
+
+  resultSpecialHeaderSize = expectedHeaderSize;
+  return True;
+}
+
+char const* H263plusVideoRTPSource::MIMEtype() const {
+  return "video/H263-1998";
+}
diff --git a/liveMedia/H263plusVideoStreamFramer.cpp b/liveMedia/H263plusVideoStreamFramer.cpp
new file mode 100644
index 0000000..d5649ef
--- /dev/null
+++ b/liveMedia/H263plusVideoStreamFramer.cpp
@@ -0,0 +1,129 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Author Bernhard Feiten
+// A filter that breaks up an H.263plus video stream into frames.
+//
+
+#include "H263plusVideoStreamFramer.hh"
+#include "H263plusVideoStreamParser.hh"
+
+#include <string.h>
+#include <GroupsockHelper.hh>
+
+
+///////////////////////////////////////////////////////////////////////////////
+////////// H263plusVideoStreamFramer implementation //////////
+//public///////////////////////////////////////////////////////////////////////
+H263plusVideoStreamFramer* H263plusVideoStreamFramer::createNew(
+                                                         UsageEnvironment& env,
+                                                         FramedSource* inputSource)
+{
+   // Need to add source type checking here???  #####
+   H263plusVideoStreamFramer* fr;
+   fr = new H263plusVideoStreamFramer(env, inputSource);
+   return fr;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+H263plusVideoStreamFramer::H263plusVideoStreamFramer(
+                              UsageEnvironment& env,
+                              FramedSource* inputSource,
+                              Boolean createParser)
+                              : FramedFilter(env, inputSource),
+                                fFrameRate(0.0), // until we learn otherwise
+                                fPictureEndMarker(False)
+{
+   // Use the current wallclock time as the base 'presentation time':
+   gettimeofday(&fPresentationTimeBase, NULL);
+   fParser = createParser ? new H263plusVideoStreamParser(this, inputSource) : NULL;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+H263plusVideoStreamFramer::~H263plusVideoStreamFramer()
+{
+   delete   fParser;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+void H263plusVideoStreamFramer::doGetNextFrame()
+{
+  fParser->registerReadInterest(fTo, fMaxSize);
+  continueReadProcessing();
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+Boolean H263plusVideoStreamFramer::isH263plusVideoStreamFramer() const
+{
+  return True;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+void H263plusVideoStreamFramer::continueReadProcessing(
+                                   void* clientData,
+                                   unsigned char* /*ptr*/, unsigned /*size*/,
+                                   struct timeval /*presentationTime*/)
+{
+   H263plusVideoStreamFramer* framer = (H263plusVideoStreamFramer*)clientData;
+   framer->continueReadProcessing();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+void H263plusVideoStreamFramer::continueReadProcessing()
+{
+   unsigned acquiredFrameSize;
+
+   u_int64_t frameDuration;  // in ms
+
+   acquiredFrameSize = fParser->parse(frameDuration);
+// Calculate some average bitrate information (to be adapted)
+//	avgBitrate = (totalBytes * 8 * H263_TIMESCALE) / totalDuration;
+
+   if (acquiredFrameSize > 0) {
+      // We were able to acquire a frame from the input.
+      // It has already been copied to the reader's space.
+      fFrameSize = acquiredFrameSize;
+//    fNumTruncatedBytes = fParser->numTruncatedBytes(); // not needed so far
+
+      fFrameRate = frameDuration == 0 ? 0.0 : 1000./(long)frameDuration;
+
+      // Compute "fPresentationTime"
+      if (acquiredFrameSize == 5) // first frame
+         fPresentationTime = fPresentationTimeBase;
+      else
+         fPresentationTime.tv_usec += (long) frameDuration*1000;
+
+      while (fPresentationTime.tv_usec >= 1000000) {
+         fPresentationTime.tv_usec -= 1000000;
+         ++fPresentationTime.tv_sec;
+      }
+
+      // Compute "fDurationInMicroseconds"
+      fDurationInMicroseconds = (unsigned int) frameDuration*1000;;
+
+      // Call our own 'after getting' function.  Because we're not a 'leaf'
+      // source, we can call this directly, without risking infinite recursion.
+      afterGetting(this);
+   } else {
+      // We were unable to parse a complete frame from the input, because:
+      // - we had to read more data from the source stream, or
+      // - the source stream has ended.
+   }
+}
diff --git a/liveMedia/H263plusVideoStreamParser.cpp b/liveMedia/H263plusVideoStreamParser.cpp
new file mode 100644
index 0000000..b27a6a1
--- /dev/null
+++ b/liveMedia/H263plusVideoStreamParser.cpp
@@ -0,0 +1,859 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Author Bernhard Feiten
+// A filter that breaks up an H.263plus video stream into frames.
+// Based on MPEG4IP/mp4creator/h263.c
+
+#include "H263plusVideoStreamParser.hh"
+#include "H263plusVideoStreamFramer.hh"
+//#include <string.h>
+//#include "GroupsockHelper.hh"
+
+
+H263plusVideoStreamParser::H263plusVideoStreamParser(
+                              H263plusVideoStreamFramer* usingSource,
+                              FramedSource* inputSource)
+                              : StreamParser(inputSource,
+                                   FramedSource::handleClosure,
+                                   usingSource,
+                                   &H263plusVideoStreamFramer::continueReadProcessing,
+                                   usingSource),
+                                fUsingSource(usingSource),
+                                fnextTR(0),
+                                fcurrentPT(0)
+{
+   memset(fStates, 0, sizeof(fStates));
+   memset(&fNextInfo, 0, sizeof(fNextInfo));
+   memset(&fCurrentInfo, 0, sizeof(fCurrentInfo));
+   memset(&fMaxBitrateCtx, 0, sizeof(fMaxBitrateCtx));
+   memset(fNextHeader,0, H263_REQUIRE_HEADER_SIZE_BYTES);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+H263plusVideoStreamParser::~H263plusVideoStreamParser()
+{
+}
+
+///////////////////////////////////////////////////////////////////////////////
+void H263plusVideoStreamParser::restoreSavedParserState()
+{
+   StreamParser::restoreSavedParserState();
+   fTo = fSavedTo;
+   fNumTruncatedBytes = fSavedNumTruncatedBytes;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+void H263plusVideoStreamParser::setParseState()
+{
+   fSavedTo = fTo;
+   fSavedNumTruncatedBytes = fNumTruncatedBytes;
+   saveParserState();  // Needed for the parsing process in StreamParser
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+void H263plusVideoStreamParser::registerReadInterest(
+                                   unsigned char* to,
+                                   unsigned maxSize)
+{
+   fStartOfFrame = fTo = fSavedTo = to;
+   fLimit = to + maxSize;
+   fMaxSize = maxSize;
+   fNumTruncatedBytes = fSavedNumTruncatedBytes = 0;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// parse() ,  derived from H263Creator of MPEG4IP, h263.c
+unsigned H263plusVideoStreamParser::parse(u_int64_t & currentDuration)
+{
+
+//   u_int8_t       frameBuffer[H263_BUFFER_SIZE]; // The input buffer
+                 // Pointer which tells LoadNextH263Object where to read data to
+//   u_int8_t*      pFrameBuffer = fTo + H263_REQUIRE_HEADER_SIZE_BYTES;
+   u_int32_t      frameSize;        // The current frame size
+                                // Pointer to receive address of the header data
+//   u_int8_t*      pCurrentHeader;// = pFrameBuffer;
+//   u_int64_t      currentDuration;  // The current frame's duration
+   u_int8_t       trDifference;     // The current TR difference
+                                   // The previous TR difference
+//   u_int8_t       prevTrDifference = H263_BASIC_FRAME_RATE;
+//   u_int64_t      totalDuration = 0;// Duration accumulator
+//   u_int64_t      avgBitrate;       // Average bitrate
+//   u_int64_t      totalBytes = 0;   // Size accumulator
+
+
+   try    // The get data routines of the class FramedFilter returns an error when
+   {      // the buffer is empty. This occurs at the beginning and at the end of the file.
+      fCurrentInfo = fNextInfo;
+
+      // Parse 1 frame
+      // For the first time, only the first frame's header is returned.
+      // The second time the full first frame is returned
+      frameSize = parseH263Frame();
+
+      currentDuration = 0;
+      if ((frameSize > 0)){
+         // We were able to acquire a frame from the input.
+
+         // Parse the returned frame header (if any)
+         if (!ParseShortHeader(fTo, &fNextInfo)) {
+#ifdef DEBUG
+	   fprintf(stderr,"H263plusVideoStreamParser: Fatal error\n");
+#endif
+	 }
+
+         trDifference = GetTRDifference(fNextInfo.tr, fCurrentInfo.tr);
+
+         // calculate the current frame duration
+         currentDuration = CalculateDuration(trDifference);
+
+         // Accumulate the frame's size and duration for avgBitrate calculation
+         //totalDuration += currentDuration;
+         //totalBytes += frameSize;
+         //  If needed, recalculate bitrate information
+         //    if (h263Bitrates)
+         //GetMaxBitrate(&fMaxBitrateCtx, frameSize, prevTrDifference);
+         //prevTrDifference = trDifference;
+
+	 setParseState(); // Needed for the parsing process in StreamParser
+      }
+   } catch (int /*e*/) {
+#ifdef DEBUG
+      fprintf(stderr, "H263plusVideoStreamParser::parse() EXCEPTION (This is normal behavior - *not* an error)\n");
+#endif
+      frameSize=0;
+   }
+
+   return frameSize;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+// parseH263Frame derived from LoadNextH263Object of MPEG4IP
+// - service routine that reads a single frame from the input file.
+// It shall fill the input buffer with data up until - and including - the
+// next start code and shall report back both the number of bytes read and a
+// pointer to the next start code. The first call to this function shall only
+// yield a pointer with 0 data bytes and the last call to this function shall
+// only yield data bytes with a NULL pointer as the next header.
+//
+// TODO: This function only supports valid bit streams. Upon error, it fails
+// without the possibility to recover. A Better idea would be to skip frames
+// until a parsable frame is read from the file.
+//
+// Parameters:
+//      ppNextHeader - output parameter that upon return points to the location
+//                     of the next frame's head in the buffer.
+//                     This pointer shall be NULL for the last frame read.
+// Returns the total number of bytes read.
+// Uses FrameFileSource intantiated by constructor.
+///////////////////////////////////////////////////////////////////////////////
+int H263plusVideoStreamParser::parseH263Frame( )
+{
+   char     row = 0;
+   u_int8_t * bufferIndex = fTo;
+   // The buffer end which will allow the loop to leave place for
+   // the additionalBytesNeeded
+   u_int8_t * bufferEnd = fTo + fMaxSize - ADDITIONAL_BYTES_NEEDED - 1;
+
+   memcpy(fTo, fNextHeader, H263_REQUIRE_HEADER_SIZE_BYTES);
+   bufferIndex += H263_REQUIRE_HEADER_SIZE_BYTES;
+
+
+   // The state table and the following loop implements a state machine enabling
+   // us to read bytes from the file until (and inclusing) the requested
+   // start code (00 00 8X) is found
+
+   // Initialize the states array, if it hasn't been initialized yet...
+   if (!fStates[0][0]) {
+      // One 00 was read
+      fStates[0][0] = 1;
+      // Two sequential 0x00 ware read
+      fStates[1][0] = fStates[2][0] = 2;
+      // A full start code was read
+      fStates[2][128] = fStates[2][129] = fStates[2][130] = fStates[2][131] = -1;
+   }
+
+   // Read data from file into the output buffer until either a start code
+   // is found, or the end of file has been reached.
+   do {
+      *bufferIndex = get1Byte();
+   } while ((bufferIndex < bufferEnd) &&                    // We have place in the buffer
+            ((row = fStates[(unsigned char)row][*(bufferIndex++)]) != -1)); // Start code was not found
+
+   if (row != -1) {
+      fprintf(stderr, "%s: Buffer too small (%u)\n",
+         "h263reader:", bufferEnd - fTo + ADDITIONAL_BYTES_NEEDED);
+      return 0;
+   }
+
+   // Cool ... now we have a start code
+   // Now we just have to read the additionalBytesNeeded
+   getBytes(bufferIndex, ADDITIONAL_BYTES_NEEDED);
+   memcpy(fNextHeader, bufferIndex - H263_STARTCODE_SIZE_BYTES, H263_REQUIRE_HEADER_SIZE_BYTES);
+
+	int sz = bufferIndex - fTo - H263_STARTCODE_SIZE_BYTES;
+
+   if (sz == 5) // first frame
+      memcpy(fTo, fTo+H263_REQUIRE_HEADER_SIZE_BYTES, H263_REQUIRE_HEADER_SIZE_BYTES);
+
+   return sz;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// ParseShortHeader - service routine that accepts a buffer containing a frame
+// header and extracts relevant codec information from it.
+//
+// NOTE: the first bit in the following commnets is 0 (zero).
+//
+//       0                   1                   2                   3
+//       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+//      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+//      |      PSC (Picture Start Code=22 bits)     |  (TR=8 bits)  |   >
+//      |0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0|               |1 0>
+//      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+//      <   (PTYPE=13 bits)   |
+//      <. . .|(FMT)|Z|. . . .|
+//      +-+-+-+-+-+-+-+-+-+-+-+
+//      -> PTYPE.FMT contains a width/height identification
+//      -> PTYPE.Z   is 1 for P-Frames, 0 for I-Frames
+//      Note: When FMT is 111, there is an extended PTYPE...
+//
+// Inputs:
+//      headerBuffer - pointer to the current header buffer
+//      outputInfoStruct - pointer to the structure receiving the data
+// Outputs:
+//      This function returns a structure of important codec-specific
+//      information (The Temporal Reference bits, width & height of the current
+//      frame and the sync - or "frame type" - bit. It reports success or
+//      failure to the calling function.
+////////////////////////////////////////////////////////////////////////////////
+bool H263plusVideoStreamParser::ParseShortHeader(
+                                   u_int8_t *headerBuffer,
+                                   H263INFO *outputInfoStruct)
+{
+   u_int8_t fmt = 0;
+   // Extract temporal reference (TR) from the buffer (bits 22-29 inclusive)
+   outputInfoStruct->tr  = (headerBuffer[2] << 6) & 0xC0; // 2 LS bits out of the 3rd byte
+   outputInfoStruct->tr |= (headerBuffer[3] >> 2) & 0x3F; // 6 MS bits out of the 4th byte
+   // Extract the FMT part of PTYPE from the buffer (bits 35-37 inclusive)
+   fmt = (headerBuffer[4] >> 2) & 0x07; // bits 3-5 ouf of the 5th byte
+   // If PTYPE is not supported, return a failure notice to the calling function
+   // FIXME: PLUSPTYPE is not supported
+   if (fmt == 0x07) {
+      return false;
+   }
+   // If PTYPE is supported, calculate the current width and height according to
+   // a predefined table
+   if (!GetWidthAndHeight(fmt, &(outputInfoStruct->width),
+                               &(outputInfoStruct->height))) {
+      return false;
+   }
+   // Extract the frame-type bit, which is the 9th bit of PTYPE (bit 38)
+   outputInfoStruct->isSyncFrame = !(headerBuffer[4] & 0x02);
+
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// GetMaxBitrate- service routine that accepts frame information and
+// derives bitrate information from it. This function uses a sliding window
+// technique to calculate the maximum bitrates in any window of 1 second
+// inside the file.
+// The sliding window is implemented with a table of bitrates for the last
+// second (30 entries - one entry per TR unit).
+//
+// Inputs:
+//      ctx - context for this function
+//      frameSize - the size of the current frame in bytes
+//      frameTRDiff - the "duration" of the frame in TR units
+// Outputs:
+//      This function returns the up-to-date maximum bitrate
+////////////////////////////////////////////////////////////////////////////////
+void H263plusVideoStreamParser::GetMaxBitrate( MaxBitrate_CTX *ctx,
+                                               u_int32_t      frameSize,
+                                               u_int8_t       frameTRDiff)
+{
+   if (frameTRDiff == 0)
+      return;
+
+   // Calculate the current frame's bitrate as bits per TR unit (round the result
+   // upwards)
+   u_int32_t frameBitrate = frameSize * 8 / frameTRDiff + 1;
+
+   // for each TRdiff received,
+   while (frameTRDiff--) {
+      // Subtract the oldest bitrate entry from the current bitrate
+      ctx->windowBitrate -= ctx->bitrateTable[ctx->tableIndex];
+      // Update the oldest bitrate entry with the current frame's bitrate
+      ctx->bitrateTable[ctx->tableIndex] = frameBitrate;
+      // Add the current frame's bitrate to the current bitrate
+      ctx->windowBitrate += frameBitrate;
+      // Check if we have a new maximum bitrate
+      if (ctx->windowBitrate > ctx->maxBitrate) {
+         ctx->maxBitrate = ctx->windowBitrate;
+	  }
+      // Advance the table index
+      // Wrapping around the bitrateTable size
+      ctx->tableIndex = (ctx->tableIndex + 1) %
+        ( sizeof(ctx->bitrateTable) / sizeof(ctx->bitrateTable[0]) );
+   }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// CalculateDuration - service routine that calculates the current frame's
+// duration in milli-seconds using it's duration in TR units.
+//  - In order not to accumulate the calculation error, we are using the TR
+// duration to calculate the current and the next frame's presentation time in
+// milli-seconds.
+//
+// Inputs: trDiff - The current frame's duration in TR units
+// Return: The current frame's duration in milli-seconds
+////////////////////////////////////////////////////////////////////////////////
+u_int64_t H263plusVideoStreamParser::CalculateDuration(u_int8_t trDiff)
+{
+  u_int64_t        nextPT;          // The next frame's presentation time in milli-seconds
+  u_int64_t        duration;        // The current frame's duration in milli-seconds
+
+  fnextTR += trDiff;
+  // Calculate the next frame's presentation time, in milli-seconds
+  nextPT = (fnextTR * 1001) / H263_BASIC_FRAME_RATE;
+  // The frame's duration is the difference between the next presentation
+  // time and the current presentation time.
+  duration = nextPT - fcurrentPT;
+  // "Remember" the next presentation time for the next time this function is called
+  fcurrentPT = nextPT;
+
+  return duration;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+bool H263plusVideoStreamParser::GetWidthAndHeight( u_int8_t  fmt,
+                                                   u_int16_t *width,
+                                                   u_int16_t *height)
+{
+   // The 'fmt' corresponds to bits 5-7 of the PTYPE
+  static struct {
+      u_int16_t width;
+      u_int16_t height;
+   } const dimensionsTable[8] = {
+	   { 0,    0 },      // 000 - 0 - forbidden, generates an error
+	   { 128,  96 },     // 001 - 1 - Sub QCIF
+	   { 176,  144 },    // 010 - 2 - QCIF
+	   { 352,  288 },    // 011 - 3 - CIF
+	   { 704,  576 },    // 100 - 4 - 4CIF
+	   { 1409, 1152 },   // 101 - 5 - 16CIF
+	   { 0,    0 },      // 110 - 6 - reserved, generates an error
+	   { 0,    0 }       // 111 - 7 - extended, not supported by profile 0
+   };
+
+   if (fmt > 7)
+      return false;
+
+   *width  = dimensionsTable[fmt].width;
+   *height = dimensionsTable[fmt].height;
+
+   if (*width  == 0)
+     return false;
+
+   return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+u_int8_t H263plusVideoStreamParser::GetTRDifference(
+                                              u_int8_t nextTR,
+                                              u_int8_t currentTR)
+{
+   if (currentTR > nextTR) {
+      // Wrap around 255...
+      return nextTR + (256 - currentTR);
+   } else {
+      return nextTR - currentTR;
+   }
+}
+
+
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////////////////////
+// this is the h263.c file of MPEG4IP mp4creator
+/*
+#include "mp4creator.h"
+
+// Default timescale for H.263 (1000ms)
+#define H263_TIMESCALE 1000
+// Default H263 frame rate (30fps)
+#define H263_BASIC_FRAME_RATE 30
+
+// Minimum number of bytes needed to parse an H263 header
+#define H263_REQUIRE_HEADER_SIZE_BYTES 5
+// Number of bytes the start code requries
+#define H263_STARTCODE_SIZE_BYTES 3
+// This is the input buffer's size. It should contain
+// 1 frame with the following start code
+#define H263_BUFFER_SIZE 256 * 1024
+// The default max different (in %) betwqeen max and average bitrates
+#define H263_DEFAULT_CBR_TOLERANCE  10
+
+// The following structure holds information extracted from each frame's header:
+typedef struct _H263INFO {
+  u_int8_t  tr;                 // Temporal Reference, used in duration calculation
+  u_int16_t width;              // Width of the picture
+  u_int16_t height;             // Height of the picture
+  bool      isSyncFrame;        // Frame type (true = I frame = "sync" frame)
+} H263INFO;
+
+// Context for the GetMaxBitrate function
+typedef struct _MaxBitrate_CTX {
+  u_int32_t  bitrateTable[H263_BASIC_FRAME_RATE];// Window of 1 second
+  u_int32_t  windowBitrate;              // The bitrate of the current window
+  u_int32_t  maxBitrate;                 // The up-to-date maximum bitrate
+  u_int32_t  tableIndex;                 // The next TR unit to update
+} MaxBitrate_CTX;
+
+// Forward declarations:
+static int LoadNextH263Object(  FILE           *inputFileHandle,
+                                u_int8_t       *frameBuffer,
+                                u_int32_t      *frameBufferSize,
+                                u_int32_t       additionalBytesNeeded,
+                                u_int8_t      **ppNextHeader);
+
+static bool ParseShortHeader(   u_int8_t       *headerBuffer,
+                                H263INFO       *outputInfoStruct);
+
+static u_int8_t GetTRDifference(u_int8_t        nextTR,
+                                u_int8_t        currentTR);
+
+static void GetMaxBitrate(      MaxBitrate_CTX *ctx,
+                                u_int32_t       frameSize,
+                                u_int8_t        frameTRDiff);
+
+static MP4Duration CalculateDuration(u_int8_t   trDiff);
+
+static bool GetWidthAndHeight(  u_int8_t        fmt,
+                                u_int16_t      *width,
+                                u_int16_t      *height);
+
+static char   states[3][256];
+/ *
+ * H263Creator - Main function
+ * Inputs:
+ *      outputFileHandle - The handle of the output file
+ *      inputFileHandle - The handle of the input file
+ *      Codec-specific parameters:
+ *              H263Level - H.263 Level used for this track
+ *              H263Profile - H.263 Profile used for this track
+ *              H263Bitrates - A Parameter indicating whether the function
+ *                             should calculate H263 bitrates or not.
+ *              cbrTolerance - CBR tolerance indicates when to set the
+ *                             average bitrate.
+ * Outputs:
+ *      This function returns either the track ID of the newly added track upon
+ *      success or a predefined value representing an erroneous state.
+ * /
+MP4TrackId H263Creator(MP4FileHandle outputFileHandle,
+                       FILE*         inputFileHandle,
+                       u_int8_t      h263Profile,
+                       u_int8_t      h263Level,
+                       bool          h263Bitrates,
+                       u_int8_t      cbrTolerance)
+{
+  H263INFO       nextInfo;   // Holds information about the next frame
+  H263INFO       currentInfo;// Holds information about the current frame
+  MaxBitrate_CTX maxBitrateCtx;// Context for the GetMaxBitrate function
+  memset(&nextInfo, 0, sizeof(nextInfo));
+  memset(&currentInfo, 0, sizeof(currentInfo));
+  memset(&maxBitrateCtx, 0, sizeof(maxBitrateCtx));
+  memset(states, 0, sizeof(states));
+  u_int8_t       frameBuffer[H263_BUFFER_SIZE]; // The input buffer
+                 // Pointer which tells LoadNextH263Object where to read data to
+  u_int8_t*      pFrameBuffer = frameBuffer + H263_REQUIRE_HEADER_SIZE_BYTES;
+  u_int32_t      frameSize;        // The current frame size
+                                // Pointer to receive address of the header data
+  u_int8_t*      pCurrentHeader = pFrameBuffer;
+  MP4Duration    currentDuration;  // The current frame's duration
+  u_int8_t       trDifference;     // The current TR difference
+                                   // The previous TR difference
+  u_int8_t       prevTrDifference = H263_BASIC_FRAME_RATE;
+  MP4Duration    totalDuration = 0;// Duration accumulator
+  MP4Duration    avgBitrate;       // Average bitrate
+  u_int64_t      totalBytes = 0;   // Size accumulator
+  MP4TrackId     trackId = MP4_INVALID_TRACK_ID; // Our MP4 track
+  bool           stay = true;      // loop flag
+
+  while (stay) {
+    currentInfo = nextInfo;
+    memmove(frameBuffer, pCurrentHeader, H263_REQUIRE_HEADER_SIZE_BYTES);
+    frameSize = H263_BUFFER_SIZE - H263_REQUIRE_HEADER_SIZE_BYTES;
+    // Read 1 frame and the next frame's header from the file.
+    // For the first frame, only the first frame's header is returned.
+    // For the last frame, only the last frame's data is returned.
+    if (! LoadNextH263Object(inputFileHandle, pFrameBuffer, &frameSize,
+          H263_REQUIRE_HEADER_SIZE_BYTES - H263_STARTCODE_SIZE_BYTES,
+          &pCurrentHeader))
+      break; // Fatal error ...
+
+    if (pCurrentHeader) {
+      // Parse the returned frame header (if any)
+      if (!ParseShortHeader(pCurrentHeader, &nextInfo))
+        break; // Fatal error
+      trDifference = GetTRDifference(nextInfo.tr, currentInfo.tr);
+    } else {
+      // This is the last frame ... we have to fake the trDifference ...
+      trDifference = 1;
+      // No header data has been read at this iteration, so we have to manually
+      // add the frame's header we read at the previous iteration.
+      // Note that LoadNextH263Object returns the number of bytes read, which
+      // are the current frame's data and the next frame's header
+      frameSize += H263_REQUIRE_HEADER_SIZE_BYTES;
+      // There is no need for the next iteration ...
+      stay = false;
+    }
+
+    // If this is the first iteration ...
+    if (currentInfo.width == 0) {
+      // If we have more data than just the header
+      if ((frameSize > H263_REQUIRE_HEADER_SIZE_BYTES) ||
+          !pCurrentHeader)  // Or no header at all
+        break;     // Fatal error
+      else
+        continue;  // We have only the first frame's header ...
+    }
+
+    if (trackId == MP4_INVALID_TRACK_ID) {
+      //  If a track has not been added yet, add the track to the file.
+      trackId = MP4AddH263VideoTrack(outputFileHandle, H263_TIMESCALE,
+          0, currentInfo.width, currentInfo.height,
+          h263Level, h263Profile, 0, 0);
+      if (trackId == MP4_INVALID_TRACK_ID)
+        break; // Fatal error
+    }
+
+    // calculate the current frame duration
+    currentDuration = CalculateDuration(trDifference);
+    // Write the current frame to the file.
+    if (!MP4WriteSample(outputFileHandle, trackId, frameBuffer, frameSize,
+          currentDuration, 0, currentInfo.isSyncFrame))
+      break; // Fatal error
+
+    // Accumulate the frame's size and duration for avgBitrate calculation
+    totalDuration += currentDuration;
+    totalBytes += frameSize;
+    //  If needed, recalculate bitrate information
+    if (h263Bitrates)
+      GetMaxBitrate(&maxBitrateCtx, frameSize, prevTrDifference);
+    prevTrDifference = trDifference;
+  } // while (stay)
+
+  // If this is the last frame,
+  if (!stay) {
+    // If needed and possible, update bitrate information in the file
+    if (h263Bitrates && totalDuration) {
+      avgBitrate = (totalBytes * 8 * H263_TIMESCALE) / totalDuration;
+      if (cbrTolerance == 0)
+        cbrTolerance = H263_DEFAULT_CBR_TOLERANCE;
+      // Same as: if (maxBitrate / avgBitrate > (cbrTolerance + 100) / 100.0)
+      if (maxBitrateCtx.maxBitrate * 100 > (cbrTolerance + 100) * avgBitrate)
+        avgBitrate = 0;
+      MP4SetH263Bitrates(outputFileHandle, trackId,
+          avgBitrate, maxBitrateCtx.maxBitrate);
+    }
+    // Return the newly added track ID
+    return trackId;
+  }
+
+  // If we got to here... something went wrong ...
+  fprintf(stderr,
+    "%s: Could not parse input file, invalid video stream?\n", ProgName);
+  // Upon failure, delete the newly added track if it has been added
+  if (trackId != MP4_INVALID_TRACK_ID) {
+    MP4DeleteTrack(outputFileHandle, trackId);
+  }
+  return MP4_INVALID_TRACK_ID;
+}
+
+/ *
+ * LoadNextH263Object - service routine that reads a single frame from the input
+ * file. It shall fill the input buffer with data up until - and including - the
+ * next start code and shall report back both the number of bytes read and a
+ * pointer to the next start code. The first call to this function shall only
+ * yield a pointer with 0 data bytes and the last call to this function shall
+ * only yield data bytes with a NULL pointer as the next header.
+ *
+ * TODO: This function only supports valid bit streams. Upon error, it fails
+ * without the possibility to recover. A Better idea would be to skip frames
+ * until a parsable frame is read from the file.
+ *
+ * Parameters:
+ *      inputFileHandle - The handle of the input file
+ *      frameBuffer - buffer where to place read data
+ *      frameBufferSize - in/out parameter indicating the size of the buffer on
+ *                          entry and the number of bytes copied to the buffer upon
+ *                          return
+ *      additionalBytesNeeded - indicates how many additional bytes are to be read
+ *                          from the next frame's header (over the 3 bytes that
+ *                          are already read).
+ *                          NOTE: This number MUST be > 0
+ *      ppNextHeader - output parameter that upon return points to the location
+ *                     of the next frame's head in the buffer
+ * Outputs:
+ *      This function returns two pieces of information:
+ *      1. The total number of bytes read.
+ *      2. A Pointer to the header of the next frame. This pointer shall be NULL
+ *      for the last frame read.
+ * /
+static int LoadNextH263Object(  FILE           *inputFileHandle,
+                                u_int8_t       *frameBuffer,
+                                u_int32_t      *frameBufferSize,
+                                u_int32_t       additionalBytesNeeded,
+                                u_int8_t      **ppNextHeader)
+{
+  // This table and the following loop implements a state machine enabling
+  // us to read bytes from the file untill (and inclusing) the requested
+  // start code (00 00 8X) is found
+  char        row = 0;
+  u_int8_t     *bufferStart = frameBuffer;
+  // The buffer end which will allow the loop to leave place for
+  // the additionalBytesNeeded
+  u_int8_t     *bufferEnd = frameBuffer + *frameBufferSize -
+                                              additionalBytesNeeded - 1;
+
+  // Initialize the states array, if it hasn't been initialized yet...
+  if (!states[0][0]) {
+    // One 00 was read
+    states[0][0] = 1;
+    // Two sequential 0x00 ware read
+    states[1][0] = states[2][0] = 2;
+    // A full start code was read
+    states[2][128] = states[2][129] = states[2][130] = states[2][131] = -1;
+  }
+
+  // Read data from file into the output buffer until either a start code
+  // is found, or the end of file has been reached.
+  do {
+    if (fread(frameBuffer, 1, 1, inputFileHandle) != 1){
+      // EOF or other error before we got a start code
+      *ppNextHeader = NULL;
+      *frameBufferSize = frameBuffer - bufferStart;
+      return 1;
+    }
+  } while ((frameBuffer < bufferEnd) &&                    // We have place in the buffer
+           ((row = states[row][*(frameBuffer++)]) != -1)); // Start code was not found
+  if (row != -1) {
+    fprintf(stderr, "%s: Buffer too small (%u)\n",
+            ProgName, bufferEnd - bufferStart + additionalBytesNeeded);
+    return 0;
+  }
+
+  // Cool ... now we have a start code
+  *ppNextHeader = frameBuffer - H263_STARTCODE_SIZE_BYTES;
+  *frameBufferSize = frameBuffer - bufferStart + additionalBytesNeeded;
+
+  // Now we just have to read the additionalBytesNeeded
+  if(fread(frameBuffer, additionalBytesNeeded, 1, inputFileHandle) != 1) {
+    /// We got a start code but can't read additionalBytesNeeded ... that's a fatal error
+    fprintf(stderr, "%s: Invalid H263 bitstream\n", ProgName);
+    return 0;
+  }
+
+  return 1;
+}
+
+
+/ *
+ * ParseShortHeader - service routine that accepts a buffer containing a frame
+ * header and extracts relevant codec information from it.
+ *
+ * NOTE: the first bit in the following commnets is 0 (zero).
+ *
+ *
+ *       0                   1                   2                   3
+ *       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *      |      PSC (Picture Start Code=22 bits)     |  (TR=8 bits)  |   >
+ *      |0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0|               |1 0>
+ *      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *      <   (PTYPE=13 bits)   |
+ *      <. . .|(FMT)|Z|. . . .|
+ *      +-+-+-+-+-+-+-+-+-+-+-+
+ *      -> PTYPE.FMT contains a width/height identification
+ *      -> PTYPE.Z   is 1 for P-Frames, 0 for I-Frames
+ *      Note: When FMT is 111, there is an extended PTYPE...
+ *
+ * Inputs:
+ *      headerBuffer - pointer to the current header buffer
+ *      outputInfoStruct - pointer to the structure receiving the data
+ * Outputs:
+ *      This function returns a structure of important codec-specific
+ *      information (The Temporal Reference bits, width & height of the current
+ *      frame and the sync - or "frame type" - bit. It reports success or
+ *      failure to the calling function.
+ * /
+static bool ParseShortHeader(   u_int8_t       *headerBuffer,
+                                H263INFO       *outputInfoStruct)
+{
+  u_int8_t fmt = 0;
+  // Extract temporal reference (TR) from the buffer (bits 22-29 inclusive)
+  outputInfoStruct->tr  = (headerBuffer[2] << 6) & 0xC0; // 2 LS bits out of the 3rd byte
+  outputInfoStruct->tr |= (headerBuffer[3] >> 2) & 0x3F; // 6 MS bits out of the 4th byte
+  // Extract the FMT part of PTYPE from the buffer (bits 35-37 inclusive)
+  fmt = (headerBuffer[4] >> 2) & 0x07; // bits 3-5 ouf of the 5th byte
+  // If PTYPE is not supported, return a failure notice to the calling function
+  // FIXME: PLUSPTYPE is not supported
+   if (fmt == 0x07) {
+    return false;
+  }
+  // If PTYPE is supported, calculate the current width and height according to
+  // a predefined table
+  if (!GetWidthAndHeight(fmt, &(outputInfoStruct->width),
+                              &(outputInfoStruct->height))) {
+    return false;
+  }
+  // Extract the frame-type bit, which is the 9th bit of PTYPE (bit 38)
+  outputInfoStruct->isSyncFrame = !(headerBuffer[4] & 0x02);
+
+  return true;
+}
+
+/ *
+ * GetMaxBitrate- service routine that accepts frame information and
+ * derives bitrate information from it. This function uses a sliding window
+ * technique to calculate the maximum bitrates in any window of 1 second
+ * inside the file.
+ * The sliding window is implemented with a table of bitrates for the last
+ * second (30 entries - one entry per TR unit).
+ *
+ * Inputs:
+ *      ctx - context for this function
+ *      frameSize - the size of the current frame in bytes
+ *      frameTRDiff - the "duration" of the frame in TR units
+ * Outputs:
+ *      This function returns the up-to-date maximum bitrate
+ * /
+static void GetMaxBitrate(      MaxBitrate_CTX *ctx,
+                                u_int32_t       frameSize,
+                                u_int8_t        frameTRDiff)
+{
+  if (frameTRDiff == 0)
+    return;
+
+  // Calculate the current frame's bitrate as bits per TR unit (round the result
+  // upwards)
+  u_int32_t frameBitrate = frameSize * 8 / frameTRDiff + 1;
+
+  // for each TRdiff received,
+  while (frameTRDiff--) {
+    // Subtract the oldest bitrate entry from the current bitrate
+    ctx->windowBitrate -= ctx->bitrateTable[ctx->tableIndex];
+     // Update the oldest bitrate entry with the current frame's bitrate
+    ctx->bitrateTable[ctx->tableIndex] = frameBitrate;
+    // Add the current frame's bitrate to the current bitrate
+    ctx->windowBitrate += frameBitrate;
+    // Check if we have a new maximum bitrate
+    if (ctx->windowBitrate > ctx->maxBitrate) {
+      ctx->maxBitrate = ctx->windowBitrate;
+    }
+    // Advance the table index
+    ctx->tableIndex = (ctx->tableIndex + 1) %
+        // Wrapping around the bitrateTable size
+        ( sizeof(ctx->bitrateTable) / sizeof(ctx->bitrateTable[0]) );
+  }
+}
+
+/ *
+ * CalculateDuration - service routine that calculates the current frame's
+ * duration in milli-seconds using it's duration in TR units.
+ *  - In order not to accumulate the calculation error, we are using the TR
+ * duration to calculate the current and the next frame's presentation time in
+ * milli-seconds.
+ *
+ * Inputs:
+ *      trDiff - The current frame's duration in TR units
+ * Outputs:
+ *      The current frame's duration in milli-seconds
+ * /
+static MP4Duration CalculateDuration(u_int8_t   trDiff)
+{
+  static u_int32_t const    nextTR    = 0;   // The next frame's presentation time in TR units
+  static MP4Duration const  currentPT = 0;   // The current frame's presentation time in milli-seconds
+  MP4Duration         nextPT;          // The next frame's presentation time in milli-seconds
+  MP4Duration         duration;        // The current frame's duration in milli-seconds
+
+  nextTR += trDiff;
+  // Calculate the next frame's presentation time, in milli-seconds
+  nextPT = (nextTR * 1001) / H263_BASIC_FRAME_RATE;
+  // The frame's duration is the difference between the next presentation
+  // time and the current presentation time.
+  duration = nextPT - currentPT;
+  // "Remember" the next presentation time for the next time this function is
+  // called
+  currentPT = nextPT;
+
+  return duration;
+}
+
+static bool GetWidthAndHeight(  u_int8_t        fmt,
+                                u_int16_t      *width,
+                                u_int16_t      *height)
+{
+  // The 'fmt' corresponds to bits 5-7 of the PTYPE
+  static struct {
+    u_int16_t width;
+    u_int16_t height;
+  } const dimensionsTable[8] = {
+    { 0,    0 },      // 000 - 0 - forbidden, generates an error
+    { 128,  96 },     // 001 - 1 - Sub QCIF
+    { 176,  144 },    // 010 - 2 - QCIF
+    { 352,  288 },    // 011 - 3 - CIF
+    { 704,  576 },    // 100 - 4 - 4CIF
+    { 1409, 1152 },   // 101 - 5 - 16CIF
+    { 0,    0 },      // 110 - 6 - reserved, generates an error
+    { 0,    0 }       // 111 - 7 - extended, not supported by profile 0
+  };
+
+  if (fmt > 7)
+    return false;
+
+  *width  = dimensionsTable[fmt].width;
+  *height = dimensionsTable[fmt].height;
+
+  if (*width  == 0)
+    return false;
+
+  return true;
+}
+
+static u_int8_t GetTRDifference(u_int8_t        nextTR,
+                                u_int8_t        currentTR)
+{
+  if (currentTR > nextTR) {
+    // Wrap around 255...
+    return nextTR + (256 - currentTR);
+  } else {
+    return nextTR - currentTR;
+  }
+}
+
+*/
+
diff --git a/liveMedia/H263plusVideoStreamParser.hh b/liveMedia/H263plusVideoStreamParser.hh
new file mode 100644
index 0000000..3dd44df
--- /dev/null
+++ b/liveMedia/H263plusVideoStreamParser.hh
@@ -0,0 +1,127 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an H263 video stream into frames.
+// derived from MPEG4IP h263.c
+// Author Benhard Feiten
+
+#ifndef _H263PLUS_VIDEO_STREAM_PARSER_HH
+#define _H263PLUS_VIDEO_STREAM_PARSER_HH
+
+#ifndef _STREAM_PARSER_HH
+#include "StreamParser.hh"
+#endif
+
+
+// Default timescale for H.263 (1000ms)
+#define H263_TIMESCALE 1000
+
+// Default H263 frame rate (30fps)
+#define H263_BASIC_FRAME_RATE 30
+
+// Minimum number of bytes needed to parse an H263 header
+#define H263_REQUIRE_HEADER_SIZE_BYTES 5
+
+// Number of bytes the start code requries
+#define H263_STARTCODE_SIZE_BYTES 3
+
+// This is the input buffer's size. It should contain
+// 1 frame with the following start code
+#define H263_BUFFER_SIZE 256 * 1024
+
+//  additionalBytesNeeded - indicates how many additional bytes are to be read
+//  from the next frame's header (over the 3 bytes that are already read).
+#define ADDITIONAL_BYTES_NEEDED H263_REQUIRE_HEADER_SIZE_BYTES - H263_STARTCODE_SIZE_BYTES
+
+// The default max different (in %) betwqeen max and average bitrates
+#define H263_DEFAULT_CBR_TOLERANCE  10
+
+
+
+// The following structure holds information extracted from each frame's header:
+typedef struct _H263INFO {
+  u_int8_t  tr;                 // Temporal Reference, used in duration calculation
+  u_int16_t width;              // Width of the picture
+  u_int16_t height;             // Height of the picture
+  bool      isSyncFrame;        // Frame type (true = I frame = "sync" frame)
+} H263INFO;
+
+typedef struct _MaxBitrate_CTX {
+  u_int32_t  bitrateTable[H263_BASIC_FRAME_RATE];// Window of 1 second
+  u_int32_t  windowBitrate;              // The bitrate of the current window
+  u_int32_t  maxBitrate;                 // The up-to-date maximum bitrate
+  u_int32_t  tableIndex;                 // The next TR unit to update
+} MaxBitrate_CTX;
+
+
+class H263plusVideoStreamParser : public StreamParser {
+
+public:
+   H263plusVideoStreamParser( class H263plusVideoStreamFramer* usingSource,
+			                  FramedSource* inputSource);
+
+   virtual ~H263plusVideoStreamParser();
+
+   void registerReadInterest(unsigned char* to, unsigned maxSize);
+
+   unsigned parse(u_int64_t & currentDuration);    // returns the size of the frame  that was acquired, or 0 if none
+   unsigned numTruncatedBytes() const { return fNumTruncatedBytes; }  // The number of truncated bytes (if any)
+
+
+protected:
+//  H263plusVideoStreamFramer* usingSource() {
+//    return (H263plusVideoStreamFramer*)fUsingSource;
+//  }
+  void setParseState();
+
+//   void setParseState(H263plusParseState parseState);
+
+
+private:
+   int       parseH263Frame( );
+   bool      ParseShortHeader(u_int8_t *headerBuffer, H263INFO *outputInfoStruct);
+   void      GetMaxBitrate( MaxBitrate_CTX *ctx, u_int32_t frameSize, u_int8_t frameTRDiff);
+   u_int64_t CalculateDuration(u_int8_t trDiff);
+   bool      GetWidthAndHeight( u_int8_t  fmt, u_int16_t *width, u_int16_t *height);
+   u_int8_t  GetTRDifference( u_int8_t nextTR, u_int8_t currentTR);
+
+  virtual void restoreSavedParserState();
+
+protected:
+   class H263plusVideoStreamFramer* fUsingSource;
+
+   unsigned char* fTo;
+   unsigned       fMaxSize;
+   unsigned char* fStartOfFrame;
+   unsigned char* fSavedTo;
+   unsigned char* fLimit;
+   unsigned       fNumTruncatedBytes;
+   unsigned       fSavedNumTruncatedBytes;
+
+private:
+   H263INFO       fNextInfo;       // Holds information about the next frame
+   H263INFO       fCurrentInfo;    // Holds information about the current frame
+   MaxBitrate_CTX fMaxBitrateCtx;  // Context for the GetMaxBitrate function
+   char           fStates[3][256];
+   u_int8_t       fNextHeader[H263_REQUIRE_HEADER_SIZE_BYTES];
+
+  u_int32_t fnextTR;   // The next frame's presentation time in TR units
+  u_int64_t fcurrentPT;   // The current frame's presentation time in milli-seconds
+
+};
+
+#endif
diff --git a/liveMedia/H264VideoFileServerMediaSubsession.cpp b/liveMedia/H264VideoFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..cd56af1
--- /dev/null
+++ b/liveMedia/H264VideoFileServerMediaSubsession.cpp
@@ -0,0 +1,120 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a H264 video file.
+// Implementation
+
+#include "H264VideoFileServerMediaSubsession.hh"
+#include "H264VideoRTPSink.hh"
+#include "ByteStreamFileSource.hh"
+#include "H264VideoStreamFramer.hh"
+
+H264VideoFileServerMediaSubsession*
+H264VideoFileServerMediaSubsession::createNew(UsageEnvironment& env,
+					      char const* fileName,
+					      Boolean reuseFirstSource) {
+  return new H264VideoFileServerMediaSubsession(env, fileName, reuseFirstSource);
+}
+
+H264VideoFileServerMediaSubsession::H264VideoFileServerMediaSubsession(UsageEnvironment& env,
+								       char const* fileName, Boolean reuseFirstSource)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource),
+    fAuxSDPLine(NULL), fDoneFlag(0), fDummyRTPSink(NULL) {
+}
+
+H264VideoFileServerMediaSubsession::~H264VideoFileServerMediaSubsession() {
+  delete[] fAuxSDPLine;
+}
+
+static void afterPlayingDummy(void* clientData) {
+  H264VideoFileServerMediaSubsession* subsess = (H264VideoFileServerMediaSubsession*)clientData;
+  subsess->afterPlayingDummy1();
+}
+
+void H264VideoFileServerMediaSubsession::afterPlayingDummy1() {
+  // Unschedule any pending 'checking' task:
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+  // Signal the event loop that we're done:
+  setDoneFlag();
+}
+
+static void checkForAuxSDPLine(void* clientData) {
+  H264VideoFileServerMediaSubsession* subsess = (H264VideoFileServerMediaSubsession*)clientData;
+  subsess->checkForAuxSDPLine1();
+}
+
+void H264VideoFileServerMediaSubsession::checkForAuxSDPLine1() {
+  nextTask() = NULL;
+
+  char const* dasl;
+  if (fAuxSDPLine != NULL) {
+    // Signal the event loop that we're done:
+    setDoneFlag();
+  } else if (fDummyRTPSink != NULL && (dasl = fDummyRTPSink->auxSDPLine()) != NULL) {
+    fAuxSDPLine = strDup(dasl);
+    fDummyRTPSink = NULL;
+
+    // Signal the event loop that we're done:
+    setDoneFlag();
+  } else if (!fDoneFlag) {
+    // try again after a brief delay:
+    int uSecsToDelay = 100000; // 100 ms
+    nextTask() = envir().taskScheduler().scheduleDelayedTask(uSecsToDelay,
+			      (TaskFunc*)checkForAuxSDPLine, this);
+  }
+}
+
+char const* H264VideoFileServerMediaSubsession::getAuxSDPLine(RTPSink* rtpSink, FramedSource* inputSource) {
+  if (fAuxSDPLine != NULL) return fAuxSDPLine; // it's already been set up (for a previous client)
+
+  if (fDummyRTPSink == NULL) { // we're not already setting it up for another, concurrent stream
+    // Note: For H264 video files, the 'config' information ("profile-level-id" and "sprop-parameter-sets") isn't known
+    // until we start reading the file.  This means that "rtpSink"s "auxSDPLine()" will be NULL initially,
+    // and we need to start reading data from our file until this changes.
+    fDummyRTPSink = rtpSink;
+
+    // Start reading the file:
+    fDummyRTPSink->startPlaying(*inputSource, afterPlayingDummy, this);
+
+    // Check whether the sink's 'auxSDPLine()' is ready:
+    checkForAuxSDPLine(this);
+  }
+
+  envir().taskScheduler().doEventLoop(&fDoneFlag);
+
+  return fAuxSDPLine;
+}
+
+FramedSource* H264VideoFileServerMediaSubsession::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  estBitrate = 500; // kbps, estimate
+
+  // Create the video source:
+  ByteStreamFileSource* fileSource = ByteStreamFileSource::createNew(envir(), fFileName);
+  if (fileSource == NULL) return NULL;
+  fFileSize = fileSource->fileSize();
+
+  // Create a framer for the Video Elementary Stream:
+  return H264VideoStreamFramer::createNew(envir(), fileSource);
+}
+
+RTPSink* H264VideoFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock,
+		   unsigned char rtpPayloadTypeIfDynamic,
+		   FramedSource* /*inputSource*/) {
+  return H264VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+}
diff --git a/liveMedia/H264VideoFileSink.cpp b/liveMedia/H264VideoFileSink.cpp
new file mode 100644
index 0000000..5af2870
--- /dev/null
+++ b/liveMedia/H264VideoFileSink.cpp
@@ -0,0 +1,59 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.264 Video File sinks
+// Implementation
+
+#include "H264VideoFileSink.hh"
+#include "OutputFile.hh"
+
+////////// H264VideoFileSink //////////
+
+H264VideoFileSink
+::H264VideoFileSink(UsageEnvironment& env, FILE* fid,
+		    char const* sPropParameterSetsStr,
+		    unsigned bufferSize, char const* perFrameFileNamePrefix)
+  : H264or5VideoFileSink(env, fid, bufferSize, perFrameFileNamePrefix,
+			 sPropParameterSetsStr, NULL, NULL) {
+}
+
+H264VideoFileSink::~H264VideoFileSink() {
+}
+
+H264VideoFileSink*
+H264VideoFileSink::createNew(UsageEnvironment& env, char const* fileName,
+			     char const* sPropParameterSetsStr,
+			     unsigned bufferSize, Boolean oneFilePerFrame) {
+  do {
+    FILE* fid;
+    char const* perFrameFileNamePrefix;
+    if (oneFilePerFrame) {
+      // Create the fid for each frame
+      fid = NULL;
+      perFrameFileNamePrefix = fileName;
+    } else {
+      // Normal case: create the fid once
+      fid = OpenOutputFile(env, fileName);
+      if (fid == NULL) break;
+      perFrameFileNamePrefix = NULL;
+    }
+
+    return new H264VideoFileSink(env, fid, sPropParameterSetsStr, bufferSize, perFrameFileNamePrefix);
+  } while (0);
+
+  return NULL;
+}
diff --git a/liveMedia/H264VideoRTPSink.cpp b/liveMedia/H264VideoRTPSink.cpp
new file mode 100644
index 0000000..82fb90b
--- /dev/null
+++ b/liveMedia/H264VideoRTPSink.cpp
@@ -0,0 +1,131 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for H.264 video (RFC 3984)
+// Implementation
+
+#include "H264VideoRTPSink.hh"
+#include "H264VideoStreamFramer.hh"
+#include "Base64.hh"
+#include "H264VideoRTPSource.hh" // for "parseSPropParameterSets()"
+
+////////// H264VideoRTPSink implementation //////////
+
+H264VideoRTPSink
+::H264VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+		   u_int8_t const* sps, unsigned spsSize, u_int8_t const* pps, unsigned ppsSize)
+  : H264or5VideoRTPSink(264, env, RTPgs, rtpPayloadFormat,
+			NULL, 0, sps, spsSize, pps, ppsSize) {
+}
+
+H264VideoRTPSink::~H264VideoRTPSink() {
+}
+
+H264VideoRTPSink* H264VideoRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat) {
+  return new H264VideoRTPSink(env, RTPgs, rtpPayloadFormat);
+}
+
+H264VideoRTPSink* H264VideoRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+	    u_int8_t const* sps, unsigned spsSize, u_int8_t const* pps, unsigned ppsSize) {
+  return new H264VideoRTPSink(env, RTPgs, rtpPayloadFormat, sps, spsSize, pps, ppsSize);
+}
+
+H264VideoRTPSink* H264VideoRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+	    char const* sPropParameterSetsStr) {
+  u_int8_t* sps = NULL; unsigned spsSize = 0;
+  u_int8_t* pps = NULL; unsigned ppsSize = 0;
+
+  unsigned numSPropRecords;
+  SPropRecord* sPropRecords = parseSPropParameterSets(sPropParameterSetsStr, numSPropRecords);
+  for (unsigned i = 0; i < numSPropRecords; ++i) {
+    if (sPropRecords[i].sPropLength == 0) continue; // bad data
+    u_int8_t nal_unit_type = (sPropRecords[i].sPropBytes[0])&0x1F;
+    if (nal_unit_type == 7/*SPS*/) {
+      sps = sPropRecords[i].sPropBytes;
+      spsSize = sPropRecords[i].sPropLength;
+    } else if (nal_unit_type == 8/*PPS*/) {
+      pps = sPropRecords[i].sPropBytes;
+      ppsSize = sPropRecords[i].sPropLength;
+    }
+  }
+
+  H264VideoRTPSink* result
+    = new H264VideoRTPSink(env, RTPgs, rtpPayloadFormat, sps, spsSize, pps, ppsSize);
+  delete[] sPropRecords;
+
+  return result;
+}
+
+Boolean H264VideoRTPSink::sourceIsCompatibleWithUs(MediaSource& source) {
+  // Our source must be an appropriate framer:
+  return source.isH264VideoStreamFramer();
+}
+
+char const* H264VideoRTPSink::auxSDPLine() {
+  // Generate a new "a=fmtp:" line each time, using our SPS and PPS (if we have them),
+  // otherwise parameters from our framer source (in case they've changed since the last time that
+  // we were called):
+  H264or5VideoStreamFramer* framerSource = NULL;
+  u_int8_t* vpsDummy = NULL; unsigned vpsDummySize = 0;
+  u_int8_t* sps = fSPS; unsigned spsSize = fSPSSize;
+  u_int8_t* pps = fPPS; unsigned ppsSize = fPPSSize;
+  if (sps == NULL || pps == NULL) {
+    // We need to get SPS and PPS from our framer source:
+    if (fOurFragmenter == NULL) return NULL; // we don't yet have a fragmenter (and therefore not a source)
+    framerSource = (H264or5VideoStreamFramer*)(fOurFragmenter->inputSource());
+    if (framerSource == NULL) return NULL; // we don't yet have a source
+
+    framerSource->getVPSandSPSandPPS(vpsDummy, vpsDummySize, sps, spsSize, pps, ppsSize);
+    if (sps == NULL || pps == NULL) return NULL; // our source isn't ready
+  }
+
+  // Set up the "a=fmtp:" SDP line for this stream:
+  u_int8_t* spsWEB = new u_int8_t[spsSize]; // "WEB" means "Without Emulation Bytes"
+  unsigned spsWEBSize = removeH264or5EmulationBytes(spsWEB, spsSize, sps, spsSize);
+  if (spsWEBSize < 4) { // Bad SPS size => assume our source isn't ready
+    delete[] spsWEB;
+    return NULL;
+  }
+  u_int32_t profileLevelId = (spsWEB[1]<<16) | (spsWEB[2]<<8) | spsWEB[3];
+  delete[] spsWEB;
+
+  char* sps_base64 = base64Encode((char*)sps, spsSize);
+  char* pps_base64 = base64Encode((char*)pps, ppsSize);
+
+  char const* fmtpFmt =
+    "a=fmtp:%d packetization-mode=1"
+    ";profile-level-id=%06X"
+    ";sprop-parameter-sets=%s,%s\r\n";
+  unsigned fmtpFmtSize = strlen(fmtpFmt)
+    + 3 /* max char len */
+    + 6 /* 3 bytes in hex */
+    + strlen(sps_base64) + strlen(pps_base64);
+  char* fmtp = new char[fmtpFmtSize];
+  sprintf(fmtp, fmtpFmt,
+          rtpPayloadType(),
+	  profileLevelId,
+          sps_base64, pps_base64);
+
+  delete[] sps_base64;
+  delete[] pps_base64;
+
+  delete[] fFmtpSDPLine; fFmtpSDPLine = fmtp;
+  return fFmtpSDPLine;
+}
diff --git a/liveMedia/H264VideoRTPSource.cpp b/liveMedia/H264VideoRTPSource.cpp
new file mode 100644
index 0000000..787b109
--- /dev/null
+++ b/liveMedia/H264VideoRTPSource.cpp
@@ -0,0 +1,199 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.264 Video RTP Sources
+// Implementation
+
+#include "H264VideoRTPSource.hh"
+#include "Base64.hh"
+
+////////// H264BufferedPacket and H264BufferedPacketFactory //////////
+
+class H264BufferedPacket: public BufferedPacket {
+public:
+  H264BufferedPacket(H264VideoRTPSource& ourSource);
+  virtual ~H264BufferedPacket();
+
+private: // redefined virtual functions
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+					 unsigned dataSize);
+private:
+  H264VideoRTPSource& fOurSource;
+};
+
+class H264BufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+
+///////// H264VideoRTPSource implementation ////////
+
+H264VideoRTPSource*
+H264VideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			      unsigned char rtpPayloadFormat,
+			      unsigned rtpTimestampFrequency) {
+  return new H264VideoRTPSource(env, RTPgs, rtpPayloadFormat,
+				rtpTimestampFrequency);
+}
+
+H264VideoRTPSource
+::H264VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency,
+			 new H264BufferedPacketFactory) {
+}
+
+H264VideoRTPSource::~H264VideoRTPSource() {
+}
+
+Boolean H264VideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+  unsigned numBytesToSkip;
+
+  // Check the 'nal_unit_type' for special 'aggregation' or 'fragmentation' packets:
+  if (packetSize < 1) return False;
+  fCurPacketNALUnitType = (headerStart[0]&0x1F);
+  switch (fCurPacketNALUnitType) {
+  case 24: { // STAP-A
+    numBytesToSkip = 1; // discard the type byte
+    break;
+  }
+  case 25: case 26: case 27: { // STAP-B, MTAP16, or MTAP24
+    numBytesToSkip = 3; // discard the type byte, and the initial DON
+    break;
+  }
+  case 28: case 29: { // // FU-A or FU-B
+    // For these NALUs, the first two bytes are the FU indicator and the FU header.
+    // If the start bit is set, we reconstruct the original NAL header into byte 1:
+    if (packetSize < 2) return False;
+    unsigned char startBit = headerStart[1]&0x80;
+    unsigned char endBit = headerStart[1]&0x40;
+    if (startBit) {
+      fCurrentPacketBeginsFrame = True;
+
+      headerStart[1] = (headerStart[0]&0xE0)|(headerStart[1]&0x1F);
+      numBytesToSkip = 1;
+    } else {
+      // The start bit is not set, so we skip both the FU indicator and header:
+      fCurrentPacketBeginsFrame = False;
+      numBytesToSkip = 2;
+    }
+    fCurrentPacketCompletesFrame = (endBit != 0);
+    break;
+  }
+  default: {
+    // This packet contains one complete NAL unit:
+    fCurrentPacketBeginsFrame = fCurrentPacketCompletesFrame = True;
+    numBytesToSkip = 0;
+    break;
+  }
+  }
+
+  resultSpecialHeaderSize = numBytesToSkip;
+  return True;
+}
+
+char const* H264VideoRTPSource::MIMEtype() const {
+  return "video/H264";
+}
+
+SPropRecord* parseSPropParameterSets(char const* sPropParameterSetsStr,
+                                     // result parameter:
+                                     unsigned& numSPropRecords) {
+  // Make a copy of the input string, so we can replace the commas with '\0's:
+  char* inStr = strDup(sPropParameterSetsStr);
+  if (inStr == NULL) {
+    numSPropRecords = 0;
+    return NULL;
+  }
+
+  // Count the number of commas (and thus the number of parameter sets):
+  numSPropRecords = 1;
+  char* s;
+  for (s = inStr; *s != '\0'; ++s) {
+    if (*s == ',') {
+      ++numSPropRecords;
+      *s = '\0';
+    }
+  }
+
+  // Allocate and fill in the result array:
+  SPropRecord* resultArray = new SPropRecord[numSPropRecords];
+  s = inStr;
+  for (unsigned i = 0; i < numSPropRecords; ++i) {
+    resultArray[i].sPropBytes = base64Decode(s, resultArray[i].sPropLength);
+    s += strlen(s) + 1;
+  }
+
+  delete[] inStr;
+  return resultArray;
+}
+
+
+////////// H264BufferedPacket and H264BufferedPacketFactory implementation //////////
+
+H264BufferedPacket::H264BufferedPacket(H264VideoRTPSource& ourSource)
+  : fOurSource(ourSource) {
+}
+
+H264BufferedPacket::~H264BufferedPacket() {
+}
+
+unsigned H264BufferedPacket
+::nextEnclosedFrameSize(unsigned char*& framePtr, unsigned dataSize) {
+  unsigned resultNALUSize = 0; // if an error occurs
+
+  switch (fOurSource.fCurPacketNALUnitType) {
+  case 24: case 25: { // STAP-A or STAP-B
+    // The first two bytes are NALU size:
+    if (dataSize < 2) break;
+    resultNALUSize = (framePtr[0]<<8)|framePtr[1];
+    framePtr += 2;
+    break;
+  }
+  case 26: { // MTAP16
+    // The first two bytes are NALU size.  The next three are the DOND and TS offset:
+    if (dataSize < 5) break;
+    resultNALUSize = (framePtr[0]<<8)|framePtr[1];
+    framePtr += 5;
+    break;
+  }
+  case 27: { // MTAP24
+    // The first two bytes are NALU size.  The next four are the DOND and TS offset:
+    if (dataSize < 6) break;
+    resultNALUSize = (framePtr[0]<<8)|framePtr[1];
+    framePtr += 6;
+    break;
+  }
+  default: {
+    // Common case: We use the entire packet data:
+    return dataSize;
+  }
+  }
+
+  return (resultNALUSize <= dataSize) ? resultNALUSize : dataSize;
+}
+
+BufferedPacket* H264BufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* ourSource) {
+  return new H264BufferedPacket((H264VideoRTPSource&)(*ourSource));
+}
diff --git a/liveMedia/H264VideoStreamDiscreteFramer.cpp b/liveMedia/H264VideoStreamDiscreteFramer.cpp
new file mode 100644
index 0000000..90e62dd
--- /dev/null
+++ b/liveMedia/H264VideoStreamDiscreteFramer.cpp
@@ -0,0 +1,46 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simplified version of "H264VideoStreamFramer" that takes only complete,
+// discrete frames (rather than an arbitrary byte stream) as input.
+// This avoids the parsing and data copying overhead of the full
+// "H264VideoStreamFramer".
+// Implementation
+
+#include "H264VideoStreamDiscreteFramer.hh"
+
+H264VideoStreamDiscreteFramer*
+H264VideoStreamDiscreteFramer
+::createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters) {
+  return new H264VideoStreamDiscreteFramer(env, inputSource,
+					   includeStartCodeInOutput, insertAccessUnitDelimiters);
+}
+
+H264VideoStreamDiscreteFramer
+::H264VideoStreamDiscreteFramer(UsageEnvironment& env, FramedSource* inputSource,
+				Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters)
+  : H264or5VideoStreamDiscreteFramer(264, env, inputSource,
+				     includeStartCodeInOutput, insertAccessUnitDelimiters) {
+}
+
+H264VideoStreamDiscreteFramer::~H264VideoStreamDiscreteFramer() {
+}
+
+Boolean H264VideoStreamDiscreteFramer::isH264VideoStreamFramer() const {
+  return True;
+}
diff --git a/liveMedia/H264VideoStreamFramer.cpp b/liveMedia/H264VideoStreamFramer.cpp
new file mode 100644
index 0000000..5ed3cc9
--- /dev/null
+++ b/liveMedia/H264VideoStreamFramer.cpp
@@ -0,0 +1,42 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up a H.264 Video Elementary Stream into NAL units.
+// Implementation
+
+#include "H264VideoStreamFramer.hh"
+
+H264VideoStreamFramer* H264VideoStreamFramer
+::createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters) {
+  return new H264VideoStreamFramer(env, inputSource, True,
+				   includeStartCodeInOutput, insertAccessUnitDelimiters);
+}
+
+H264VideoStreamFramer
+::H264VideoStreamFramer(UsageEnvironment& env, FramedSource* inputSource, Boolean createParser,
+			Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters)
+  : H264or5VideoStreamFramer(264, env, inputSource, createParser,
+			     includeStartCodeInOutput, insertAccessUnitDelimiters) {
+}
+
+H264VideoStreamFramer::~H264VideoStreamFramer() {
+}
+
+Boolean H264VideoStreamFramer::isH264VideoStreamFramer() const {
+  return True;
+}
diff --git a/liveMedia/H264or5VideoFileSink.cpp b/liveMedia/H264or5VideoFileSink.cpp
new file mode 100644
index 0000000..082285a
--- /dev/null
+++ b/liveMedia/H264or5VideoFileSink.cpp
@@ -0,0 +1,66 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.264 or H.265 Video File sinks
+// Implementation
+
+#include "H264or5VideoFileSink.hh"
+#include "H264VideoRTPSource.hh" // for "parseSPropParameterSets()"
+
+////////// H264or5VideoFileSink //////////
+
+H264or5VideoFileSink
+::H264or5VideoFileSink(UsageEnvironment& env, FILE* fid,
+		       unsigned bufferSize, char const* perFrameFileNamePrefix,
+		       char const* sPropParameterSetsStr1,
+                       char const* sPropParameterSetsStr2,
+                       char const* sPropParameterSetsStr3)
+  : FileSink(env, fid, bufferSize, perFrameFileNamePrefix),
+    fHaveWrittenFirstFrame(False) {
+  fSPropParameterSetsStr[0] = strDup(sPropParameterSetsStr1);
+  fSPropParameterSetsStr[1] = strDup(sPropParameterSetsStr2);
+  fSPropParameterSetsStr[2] = strDup(sPropParameterSetsStr3);
+}
+
+H264or5VideoFileSink::~H264or5VideoFileSink() {
+  for (unsigned j = 0; j < 3; ++j) delete[] (char*)fSPropParameterSetsStr[j];
+}
+
+void H264or5VideoFileSink::afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime) {
+  unsigned char const start_code[4] = {0x00, 0x00, 0x00, 0x01};
+
+  if (!fHaveWrittenFirstFrame) {
+    // If we have NAL units encoded in "sprop parameter strings", prepend these to the file:
+    for (unsigned j = 0; j < 3; ++j) {
+      unsigned numSPropRecords;
+      SPropRecord* sPropRecords
+	= parseSPropParameterSets(fSPropParameterSetsStr[j], numSPropRecords);
+      for (unsigned i = 0; i < numSPropRecords; ++i) {
+	if (sPropRecords[i].sPropLength > 0) addData(start_code, 4, presentationTime);
+	addData(sPropRecords[i].sPropBytes, sPropRecords[i].sPropLength, presentationTime);
+      }
+      delete[] sPropRecords;
+    }
+    fHaveWrittenFirstFrame = True; // for next time
+  }
+
+  // Write the input data to the file, with the start code in front:
+  addData(start_code, 4, presentationTime);
+
+  // Call the parent class to complete the normal file write with the input data:
+  FileSink::afterGettingFrame(frameSize, numTruncatedBytes, presentationTime);
+}
diff --git a/liveMedia/H264or5VideoRTPSink.cpp b/liveMedia/H264or5VideoRTPSink.cpp
new file mode 100644
index 0000000..c5568b3
--- /dev/null
+++ b/liveMedia/H264or5VideoRTPSink.cpp
@@ -0,0 +1,299 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for H.264 or H.265 video
+// Implementation
+
+#include "H264or5VideoRTPSink.hh"
+#include "H264or5VideoStreamFramer.hh"
+
+////////// H264or5Fragmenter definition //////////
+
+// Because of the ideosyncracies of the H.264 RTP payload format, we implement
+// "H264or5VideoRTPSink" using a separate "H264or5Fragmenter" class that delivers,
+// to the "H264or5VideoRTPSink", only fragments that will fit within an outgoing
+// RTP packet.  I.e., we implement fragmentation in this separate "H264or5Fragmenter"
+// class, rather than in "H264or5VideoRTPSink".
+// (Note: This class should be used only by "H264or5VideoRTPSink", or a subclass.)
+
+class H264or5Fragmenter: public FramedFilter {
+public:
+  H264or5Fragmenter(int hNumber, UsageEnvironment& env, FramedSource* inputSource,
+		    unsigned inputBufferMax, unsigned maxOutputPacketSize);
+  virtual ~H264or5Fragmenter();
+
+  Boolean lastFragmentCompletedNALUnit() const { return fLastFragmentCompletedNALUnit; }
+
+private: // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+                          unsigned numTruncatedBytes,
+                          struct timeval presentationTime,
+                          unsigned durationInMicroseconds);
+  void reset();
+
+private:
+  int fHNumber;
+  unsigned fInputBufferSize;
+  unsigned fMaxOutputPacketSize;
+  unsigned char* fInputBuffer;
+  unsigned fNumValidDataBytes;
+  unsigned fCurDataOffset;
+  unsigned fSaveNumTruncatedBytes;
+  Boolean fLastFragmentCompletedNALUnit;
+};
+
+
+////////// H264or5VideoRTPSink implementation //////////
+
+H264or5VideoRTPSink
+::H264or5VideoRTPSink(int hNumber,
+		      UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+		      u_int8_t const* vps, unsigned vpsSize,
+		      u_int8_t const* sps, unsigned spsSize,
+		      u_int8_t const* pps, unsigned ppsSize)
+  : VideoRTPSink(env, RTPgs, rtpPayloadFormat, 90000, hNumber == 264 ? "H264" : "H265"),
+    fHNumber(hNumber), fOurFragmenter(NULL), fFmtpSDPLine(NULL) {
+  if (vps != NULL) {
+    fVPSSize = vpsSize;
+    fVPS = new u_int8_t[fVPSSize];
+    memmove(fVPS, vps, fVPSSize);
+  } else {
+    fVPSSize = 0;
+    fVPS = NULL;
+  }
+  if (sps != NULL) {
+    fSPSSize = spsSize;
+    fSPS = new u_int8_t[fSPSSize];
+    memmove(fSPS, sps, fSPSSize);
+  } else {
+    fSPSSize = 0;
+    fSPS = NULL;
+  }
+  if (pps != NULL) {
+    fPPSSize = ppsSize;
+    fPPS = new u_int8_t[fPPSSize];
+    memmove(fPPS, pps, fPPSSize);
+  } else {
+    fPPSSize = 0;
+    fPPS = NULL;
+  }
+}
+
+H264or5VideoRTPSink::~H264or5VideoRTPSink() {
+  fSource = fOurFragmenter; // hack: in case "fSource" had gotten set to NULL before we were called
+  delete[] fFmtpSDPLine;
+  delete[] fVPS; delete[] fSPS; delete[] fPPS;
+  stopPlaying(); // call this now, because we won't have our 'fragmenter' when the base class destructor calls it later.
+
+  // Close our 'fragmenter' as well:
+  Medium::close(fOurFragmenter);
+  fSource = NULL; // for the base class destructor, which gets called next
+}
+
+Boolean H264or5VideoRTPSink::continuePlaying() {
+  // First, check whether we have a 'fragmenter' class set up yet.
+  // If not, create it now:
+  if (fOurFragmenter == NULL) {
+    fOurFragmenter = new H264or5Fragmenter(fHNumber, envir(), fSource, OutPacketBuffer::maxSize,
+					   ourMaxPacketSize() - 12/*RTP hdr size*/);
+  } else {
+    fOurFragmenter->reassignInputSource(fSource);
+  }
+  fSource = fOurFragmenter;
+
+  // Then call the parent class's implementation:
+  return MultiFramedRTPSink::continuePlaying();
+}
+
+void H264or5VideoRTPSink::doSpecialFrameHandling(unsigned /*fragmentationOffset*/,
+						 unsigned char* /*frameStart*/,
+						 unsigned /*numBytesInFrame*/,
+						 struct timeval framePresentationTime,
+						 unsigned /*numRemainingBytes*/) {
+  // Set the RTP 'M' (marker) bit iff
+  // 1/ The most recently delivered fragment was the end of (or the only fragment of) an NAL unit, and
+  // 2/ This NAL unit was the last NAL unit of an 'access unit' (i.e. video frame).
+  if (fOurFragmenter != NULL) {
+    H264or5VideoStreamFramer* framerSource
+      = (H264or5VideoStreamFramer*)(fOurFragmenter->inputSource());
+    // This relies on our fragmenter's source being a "H264or5VideoStreamFramer".
+    if (((H264or5Fragmenter*)fOurFragmenter)->lastFragmentCompletedNALUnit()
+	&& framerSource != NULL && framerSource->pictureEndMarker()) {
+      setMarkerBit();
+      framerSource->pictureEndMarker() = False;
+    }
+  }
+
+  setTimestamp(framePresentationTime);
+}
+
+Boolean H264or5VideoRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+				 unsigned /*numBytesInFrame*/) const {
+  return False;
+}
+
+
+////////// H264or5Fragmenter implementation //////////
+
+H264or5Fragmenter::H264or5Fragmenter(int hNumber,
+				     UsageEnvironment& env, FramedSource* inputSource,
+				     unsigned inputBufferMax, unsigned maxOutputPacketSize)
+  : FramedFilter(env, inputSource),
+    fHNumber(hNumber),
+    fInputBufferSize(inputBufferMax+1), fMaxOutputPacketSize(maxOutputPacketSize) {
+  fInputBuffer = new unsigned char[fInputBufferSize];
+  reset();
+}
+
+H264or5Fragmenter::~H264or5Fragmenter() {
+  delete[] fInputBuffer;
+  detachInputSource(); // so that the subsequent ~FramedFilter() doesn't delete it
+}
+
+void H264or5Fragmenter::doGetNextFrame() {
+  if (fNumValidDataBytes == 1) {
+    // We have no NAL unit data currently in the buffer.  Read a new one:
+    fInputSource->getNextFrame(&fInputBuffer[1], fInputBufferSize - 1,
+			       afterGettingFrame, this,
+			       FramedSource::handleClosure, this);
+  } else {
+    // We have NAL unit data in the buffer.  There are three cases to consider:
+    // 1. There is a new NAL unit in the buffer, and it's small enough to deliver
+    //    to the RTP sink (as is).
+    // 2. There is a new NAL unit in the buffer, but it's too large to deliver to
+    //    the RTP sink in its entirety.  Deliver the first fragment of this data,
+    //    as a FU packet, with one extra preceding header byte (for the "FU header").
+    // 3. There is a NAL unit in the buffer, and we've already delivered some
+    //    fragment(s) of this.  Deliver the next fragment of this data,
+    //    as a FU packet, with two (H.264) or three (H.265) extra preceding header bytes
+    //    (for the "NAL header" and the "FU header").
+
+    if (fMaxSize < fMaxOutputPacketSize) { // shouldn't happen
+      envir() << "H264or5Fragmenter::doGetNextFrame(): fMaxSize ("
+	      << fMaxSize << ") is smaller than expected\n";
+    } else {
+      fMaxSize = fMaxOutputPacketSize;
+    }
+
+    fLastFragmentCompletedNALUnit = True; // by default
+    if (fCurDataOffset == 1) { // case 1 or 2
+      if (fNumValidDataBytes - 1 <= fMaxSize) { // case 1
+	memmove(fTo, &fInputBuffer[1], fNumValidDataBytes - 1);
+	fFrameSize = fNumValidDataBytes - 1;
+	fCurDataOffset = fNumValidDataBytes;
+      } else { // case 2
+	// We need to send the NAL unit data as FU packets.  Deliver the first
+	// packet now.  Note that we add "NAL header" and "FU header" bytes to the front
+	// of the packet (overwriting the existing "NAL header").
+	if (fHNumber == 264) {
+	  fInputBuffer[0] = (fInputBuffer[1] & 0xE0) | 28; // FU indicator
+	  fInputBuffer[1] = 0x80 | (fInputBuffer[1] & 0x1F); // FU header (with S bit)
+	} else { // 265
+	  u_int8_t nal_unit_type = (fInputBuffer[1]&0x7E)>>1;
+	  fInputBuffer[0] = (fInputBuffer[1] & 0x81) | (49<<1); // Payload header (1st byte)
+	  fInputBuffer[1] = fInputBuffer[2]; // Payload header (2nd byte)
+	  fInputBuffer[2] = 0x80 | nal_unit_type; // FU header (with S bit)
+	}
+	memmove(fTo, fInputBuffer, fMaxSize);
+	fFrameSize = fMaxSize;
+	fCurDataOffset += fMaxSize - 1;
+	fLastFragmentCompletedNALUnit = False;
+      }
+    } else { // case 3
+      // We are sending this NAL unit data as FU packets.  We've already sent the
+      // first packet (fragment).  Now, send the next fragment.  Note that we add
+      // "NAL header" and "FU header" bytes to the front.  (We reuse these bytes that
+      // we already sent for the first fragment, but clear the S bit, and add the E
+      // bit if this is the last fragment.)
+      unsigned numExtraHeaderBytes;
+      if (fHNumber == 264) {
+	fInputBuffer[fCurDataOffset-2] = fInputBuffer[0]; // FU indicator
+	fInputBuffer[fCurDataOffset-1] = fInputBuffer[1]&~0x80; // FU header (no S bit)
+	numExtraHeaderBytes = 2;
+      } else { // 265
+	fInputBuffer[fCurDataOffset-3] = fInputBuffer[0]; // Payload header (1st byte)
+	fInputBuffer[fCurDataOffset-2] = fInputBuffer[1]; // Payload header (2nd byte)
+	fInputBuffer[fCurDataOffset-1] = fInputBuffer[2]&~0x80; // FU header (no S bit)
+	numExtraHeaderBytes = 3;
+      }
+      unsigned numBytesToSend = numExtraHeaderBytes + (fNumValidDataBytes - fCurDataOffset);
+      if (numBytesToSend > fMaxSize) {
+	// We can't send all of the remaining data this time:
+	numBytesToSend = fMaxSize;
+	fLastFragmentCompletedNALUnit = False;
+      } else {
+	// This is the last fragment:
+	fInputBuffer[fCurDataOffset-1] |= 0x40; // set the E bit in the FU header
+	fNumTruncatedBytes = fSaveNumTruncatedBytes;
+      }
+      memmove(fTo, &fInputBuffer[fCurDataOffset-numExtraHeaderBytes], numBytesToSend);
+      fFrameSize = numBytesToSend;
+      fCurDataOffset += numBytesToSend - numExtraHeaderBytes;
+    }
+
+    if (fCurDataOffset >= fNumValidDataBytes) {
+      // We're done with this data.  Reset the pointers for receiving new data:
+      fNumValidDataBytes = fCurDataOffset = 1;
+    }
+
+    // Complete delivery to the client:
+    FramedSource::afterGetting(this);
+  }
+}
+
+void H264or5Fragmenter::doStopGettingFrames() {
+  // Make sure that we don't have any stale data fragments lying around, should we later resume:
+  reset();
+  FramedFilter::doStopGettingFrames();
+}
+
+void H264or5Fragmenter::afterGettingFrame(void* clientData, unsigned frameSize,
+					  unsigned numTruncatedBytes,
+					  struct timeval presentationTime,
+					  unsigned durationInMicroseconds) {
+  H264or5Fragmenter* fragmenter = (H264or5Fragmenter*)clientData;
+  fragmenter->afterGettingFrame1(frameSize, numTruncatedBytes, presentationTime,
+				 durationInMicroseconds);
+}
+
+void H264or5Fragmenter::afterGettingFrame1(unsigned frameSize,
+					   unsigned numTruncatedBytes,
+					   struct timeval presentationTime,
+					   unsigned durationInMicroseconds) {
+  fNumValidDataBytes += frameSize;
+  fSaveNumTruncatedBytes = numTruncatedBytes;
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+
+  // Deliver data to the client:
+  doGetNextFrame();
+}
+
+void H264or5Fragmenter::reset() {
+  fNumValidDataBytes = fCurDataOffset = 1;
+  fSaveNumTruncatedBytes = 0;
+  fLastFragmentCompletedNALUnit = True;
+}
diff --git a/liveMedia/H264or5VideoStreamDiscreteFramer.cpp b/liveMedia/H264or5VideoStreamDiscreteFramer.cpp
new file mode 100644
index 0000000..d4d3bbf
--- /dev/null
+++ b/liveMedia/H264or5VideoStreamDiscreteFramer.cpp
@@ -0,0 +1,141 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simplified version of "H264or5VideoStreamFramer" that takes only complete,
+// discrete frames (rather than an arbitrary byte stream) as input.
+// This avoids the parsing and data copying overhead of the full
+// "H264or5VideoStreamFramer".
+// Implementation
+
+#include "H264or5VideoStreamDiscreteFramer.hh"
+
+H264or5VideoStreamDiscreteFramer
+::H264or5VideoStreamDiscreteFramer(int hNumber, UsageEnvironment& env, FramedSource* inputSource,
+				   Boolean includeStartCodeInOutput,
+				   Boolean insertAccessUnitDelimiters)
+  : H264or5VideoStreamFramer(hNumber, env, inputSource, False/*don't create a parser*/,
+			     includeStartCodeInOutput, insertAccessUnitDelimiters) {
+}
+
+H264or5VideoStreamDiscreteFramer::~H264or5VideoStreamDiscreteFramer() {
+}
+
+void H264or5VideoStreamDiscreteFramer::doGetNextFrame() {
+  if (fIncludeStartCodeInOutput) {
+    // Prepend a 4-byte 'start code' (0x00000001) to the output:
+    if (fMaxSize < 4) {  // there's no space
+      fNumTruncatedBytes = 4 - fMaxSize;
+      handleClosure();
+      return;
+    }
+    *fTo++ = 0x00; *fTo++ = 0x00; *fTo++ = 0x00; *fTo++ = 0x01;
+    fMaxSize -= 4;
+  }
+
+  if (fInsertAccessUnitDelimiters && pictureEndMarker()) {
+    // Deliver an "access_unit_delimiter" NAL unit instead:
+    unsigned const audNALSize = fHNumber == 264 ? 2 : 3;
+
+    if (audNALSize > fMaxSize) { // there's no space
+      fNumTruncatedBytes = audNALSize - fMaxSize;
+      handleClosure();
+      return;
+    }
+
+    if (fHNumber == 264) {
+      *fTo++ = 9; // "Access unit delimiter" nal_unit_type
+      *fTo++ = 0xF0; // "primary_pic_type" (7); "rbsp_trailing_bits()"
+    } else { // H.265
+      *fTo++ = 35<<1; // "Access unit delimiter" nal_unit_type
+      *fTo++ = 0; // "nuh_layer_id" (0); "nuh_temporal_id_plus1" (0) (Is this correct??)
+      *fTo++ = 0x50; // "pic_type" (2); "rbsp_trailing_bits()" (Is this correct??)
+    }
+
+    fFrameSize = (fIncludeStartCodeInOutput ? 4: 0) + audNALSize;
+    pictureEndMarker() = False; // for next time
+    afterGetting(this); // complete delivery to the downstream object
+  } else {
+    // Normal case:
+    // Arrange to read data (which should be a complete H.264 or H.265 NAL unit)
+    // from our data source, directly into the client's input buffer.
+    // After reading this, we'll do some parsing on the frame.
+    fInputSource->getNextFrame(fTo, fMaxSize,
+			       afterGettingFrame, this,
+			       FramedSource::handleClosure, this);
+  }
+}
+
+void H264or5VideoStreamDiscreteFramer
+::afterGettingFrame(void* clientData, unsigned frameSize,
+                    unsigned numTruncatedBytes,
+                    struct timeval presentationTime,
+                    unsigned durationInMicroseconds) {
+  H264or5VideoStreamDiscreteFramer* source = (H264or5VideoStreamDiscreteFramer*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes, presentationTime, durationInMicroseconds);
+}
+
+void H264or5VideoStreamDiscreteFramer
+::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+                     struct timeval presentationTime,
+                     unsigned durationInMicroseconds) {
+  // Get the "nal_unit_type", to see if this NAL unit is one that we want to save a copy of:
+  u_int8_t nal_unit_type;
+  if (fHNumber == 264 && frameSize >= 1) {
+    nal_unit_type = fTo[0]&0x1F;
+  } else if (fHNumber == 265 && frameSize >= 2) {
+    nal_unit_type = (fTo[0]&0x7E)>>1;
+  } else {
+    // This is too short to be a valid NAL unit, so just assume a bogus nal_unit_type
+    nal_unit_type = 0xFF;
+  }
+
+  // Begin by checking for a (likely) common error: NAL units that (erroneously) begin with a
+  // 0x00000001 or 0x000001 'start code'.  (Those start codes should only be in byte-stream data;
+  // *not* data that consists of discrete NAL units.)
+  // Once again, to be clear: The NAL units that you feed to a "H264or5VideoStreamDiscreteFramer"
+  // MUST NOT include start codes.
+  if (frameSize >= 4 && fTo[0] == 0 && fTo[1] == 0 && ((fTo[2] == 0 && fTo[3] == 1) || fTo[2] == 1)) {
+    envir() << "H264or5VideoStreamDiscreteFramer error: MPEG 'start code' seen in the input\n";
+  } else if (isVPS(nal_unit_type)) { // Video parameter set (VPS)
+    saveCopyOfVPS(fTo, frameSize);
+  } else if (isSPS(nal_unit_type)) { // Sequence parameter set (SPS)
+    saveCopyOfSPS(fTo, frameSize);
+  } else if (isPPS(nal_unit_type)) { // Picture parameter set (PPS)
+    saveCopyOfPPS(fTo, frameSize);
+  }
+
+  fPictureEndMarker = nalUnitEndsAccessUnit(nal_unit_type);
+
+  // Finally, complete delivery to the client:
+  fFrameSize = fIncludeStartCodeInOutput ? (4+frameSize) : frameSize;
+  fNumTruncatedBytes = numTruncatedBytes;
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+  afterGetting(this);
+}
+
+Boolean H264or5VideoStreamDiscreteFramer::nalUnitEndsAccessUnit(u_int8_t nal_unit_type) {
+  // Check whether this NAL unit ends the current 'access unit' (basically, a video frame).
+  //  Unfortunately, we can't do this reliably, because we don't yet know anything about the
+  // *next* NAL unit that we'll see.  So, we guess this as best as we can, by assuming that
+  // if this NAL unit is a VCL NAL unit, then it ends the current 'access unit'.
+  //
+  // This will be wrong if you are streaming multiple 'slices' per picture.  In that case,
+  // you can define a subclass that reimplements this virtual function to do the right thing.
+
+  return isVCL(nal_unit_type);
+}
diff --git a/liveMedia/H264or5VideoStreamFramer.cpp b/liveMedia/H264or5VideoStreamFramer.cpp
new file mode 100644
index 0000000..85ab433
--- /dev/null
+++ b/liveMedia/H264or5VideoStreamFramer.cpp
@@ -0,0 +1,1229 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up a H.264 or H.265 Video Elementary Stream into NAL units.
+// Implementation
+
+#include "H264or5VideoStreamFramer.hh"
+#include "MPEGVideoStreamParser.hh"
+#include "BitVector.hh"
+#include <GroupsockHelper.hh> // for "gettimeofday()"
+
+////////// H264or5VideoStreamParser definition //////////
+
+class H264or5VideoStreamParser: public MPEGVideoStreamParser {
+public:
+  H264or5VideoStreamParser(int hNumber, H264or5VideoStreamFramer* usingSource,
+			   FramedSource* inputSource, Boolean includeStartCodeInOutput);
+  virtual ~H264or5VideoStreamParser();
+
+private: // redefined virtual functions:
+  virtual void flushInput();
+  virtual unsigned parse();
+
+private:
+  H264or5VideoStreamFramer* usingSource() {
+    return (H264or5VideoStreamFramer*)fUsingSource;
+  }
+
+  Boolean isVPS(u_int8_t nal_unit_type) { return usingSource()->isVPS(nal_unit_type); }
+  Boolean isSPS(u_int8_t nal_unit_type) { return usingSource()->isSPS(nal_unit_type); }
+  Boolean isPPS(u_int8_t nal_unit_type) { return usingSource()->isPPS(nal_unit_type); }
+  Boolean isVCL(u_int8_t nal_unit_type) { return usingSource()->isVCL(nal_unit_type); }
+  Boolean isSEI(u_int8_t nal_unit_type);
+  Boolean isEOF(u_int8_t nal_unit_type);
+  Boolean usuallyBeginsAccessUnit(u_int8_t nal_unit_type);
+
+  void removeEmulationBytes(u_int8_t* nalUnitCopy, unsigned maxSize, unsigned& nalUnitCopySize);
+
+  void analyze_video_parameter_set_data(unsigned& num_units_in_tick, unsigned& time_scale);
+  void analyze_seq_parameter_set_data(unsigned& num_units_in_tick, unsigned& time_scale);
+  void profile_tier_level(BitVector& bv, unsigned max_sub_layers_minus1);
+  void analyze_vui_parameters(BitVector& bv, unsigned& num_units_in_tick, unsigned& time_scale);
+  void analyze_hrd_parameters(BitVector& bv);
+  void analyze_sei_data(u_int8_t nal_unit_type);
+  void analyze_sei_payload(unsigned payloadType, unsigned payloadSize, u_int8_t* payload);
+
+private:
+  int fHNumber; // 264 or 265
+  unsigned fOutputStartCodeSize;
+  Boolean fHaveSeenFirstStartCode, fHaveSeenFirstByteOfNALUnit;
+  u_int8_t fFirstByteOfNALUnit;
+  double fParsedFrameRate;
+  // variables set & used in the specification:
+  unsigned cpb_removal_delay_length_minus1, dpb_output_delay_length_minus1;
+  Boolean CpbDpbDelaysPresentFlag, pic_struct_present_flag;
+  double DeltaTfiDivisor;
+};
+
+
+////////// H264or5VideoStreamFramer implementation //////////
+
+H264or5VideoStreamFramer
+::H264or5VideoStreamFramer(int hNumber, UsageEnvironment& env, FramedSource* inputSource,
+			   Boolean createParser,
+			   Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters)
+  : MPEGVideoStreamFramer(env, inputSource),
+    fHNumber(hNumber), fIncludeStartCodeInOutput(includeStartCodeInOutput),
+    fInsertAccessUnitDelimiters(insertAccessUnitDelimiters),
+    fLastSeenVPS(NULL), fLastSeenVPSSize(0),
+    fLastSeenSPS(NULL), fLastSeenSPSSize(0),
+    fLastSeenPPS(NULL), fLastSeenPPSSize(0) {
+  fParser = createParser
+    ? new H264or5VideoStreamParser(hNumber, this, inputSource, includeStartCodeInOutput)
+    : NULL;
+  fFrameRate = 25.0; // We assume a frame rate of 25 fps, unless we learn otherwise (from parsing a VPS or SPS NAL unit)
+}
+
+H264or5VideoStreamFramer::~H264or5VideoStreamFramer() {
+  delete[] fLastSeenPPS;
+  delete[] fLastSeenSPS;
+  delete[] fLastSeenVPS;
+}
+
+#define VPS_MAX_SIZE 1000 // larger than the largest possible VPS (Video Parameter Set) NAL unit
+
+void H264or5VideoStreamFramer::saveCopyOfVPS(u_int8_t* from, unsigned size) {
+  if (from == NULL) return;
+  delete[] fLastSeenVPS;
+  fLastSeenVPS = new u_int8_t[size];
+  memmove(fLastSeenVPS, from, size);
+
+  fLastSeenVPSSize = size;
+}
+
+#define SPS_MAX_SIZE 1000 // larger than the largest possible SPS (Sequence Parameter Set) NAL unit
+
+void H264or5VideoStreamFramer::saveCopyOfSPS(u_int8_t* from, unsigned size) {
+  if (from == NULL) return;
+  delete[] fLastSeenSPS;
+  fLastSeenSPS = new u_int8_t[size];
+  memmove(fLastSeenSPS, from, size);
+
+  fLastSeenSPSSize = size;
+}
+
+void H264or5VideoStreamFramer::saveCopyOfPPS(u_int8_t* from, unsigned size) {
+  if (from == NULL) return;
+  delete[] fLastSeenPPS;
+  fLastSeenPPS = new u_int8_t[size];
+  memmove(fLastSeenPPS, from, size);
+
+  fLastSeenPPSSize = size;
+}
+
+void H264or5VideoStreamFramer::setPresentationTime() {
+  if (fPresentationTimeBase.tv_sec == 0 && fPresentationTimeBase.tv_usec == 0) {
+    // Set to the current time:
+    gettimeofday(&fPresentationTimeBase, NULL);
+    fNextPresentationTime = fPresentationTimeBase;
+  }
+  fPresentationTime = fNextPresentationTime;
+}
+
+Boolean H264or5VideoStreamFramer::isVPS(u_int8_t nal_unit_type) {
+  // VPS NAL units occur in H.265 only:
+  return fHNumber == 265 && nal_unit_type == 32;
+}
+
+Boolean H264or5VideoStreamFramer::isSPS(u_int8_t nal_unit_type) {
+  return fHNumber == 264 ? nal_unit_type == 7 : nal_unit_type == 33;
+}
+
+Boolean H264or5VideoStreamFramer::isPPS(u_int8_t nal_unit_type) {
+  return fHNumber == 264 ? nal_unit_type == 8 : nal_unit_type == 34;
+}
+
+Boolean H264or5VideoStreamFramer::isVCL(u_int8_t nal_unit_type) {
+  return fHNumber == 264
+    ? (nal_unit_type <= 5 && nal_unit_type > 0)
+    : (nal_unit_type <= 31);
+}
+
+void H264or5VideoStreamFramer::doGetNextFrame() {
+  if (fInsertAccessUnitDelimiters && pictureEndMarker()) {
+    // Deliver an "access_unit_delimiter" NAL unit instead:
+    unsigned const startCodeSize = fIncludeStartCodeInOutput ? 4: 0;
+    unsigned const audNALSize = fHNumber == 264 ? 2 : 3;
+
+    fFrameSize = startCodeSize + audNALSize;
+    if (fFrameSize > fMaxSize) { // there's no space
+      fNumTruncatedBytes = fFrameSize - fMaxSize;
+      fFrameSize = fMaxSize;
+      handleClosure();
+      return;
+    }
+
+    if (fIncludeStartCodeInOutput) {
+      *fTo++ = 0x00; *fTo++ = 0x00; *fTo++ = 0x00; *fTo++ = 0x01;
+    }
+    if (fHNumber == 264) {
+      *fTo++ = 9; // "Access unit delimiter" nal_unit_type
+      *fTo++ = 0xF0; // "primary_pic_type" (7); "rbsp_trailing_bits()"
+    } else { // H.265
+      *fTo++ = 35<<1; // "Access unit delimiter" nal_unit_type
+      *fTo++ = 0; // "nuh_layer_id" (0); "nuh_temporal_id_plus1" (0) (Is this correct??)
+      *fTo++ = 0x50; // "pic_type" (2); "rbsp_trailing_bits()" (Is this correct??)
+    }
+
+    pictureEndMarker() = False; // for next time
+    afterGetting(this);
+  } else {
+    // Do the normal delivery of a NAL unit from the parser:
+    MPEGVideoStreamFramer::doGetNextFrame();
+  }
+}
+
+
+////////// H264or5VideoStreamParser implementation //////////
+
+H264or5VideoStreamParser
+::H264or5VideoStreamParser(int hNumber, H264or5VideoStreamFramer* usingSource,
+			   FramedSource* inputSource, Boolean includeStartCodeInOutput)
+  : MPEGVideoStreamParser(usingSource, inputSource),
+    fHNumber(hNumber), fOutputStartCodeSize(includeStartCodeInOutput ? 4 : 0), fHaveSeenFirstStartCode(False), fHaveSeenFirstByteOfNALUnit(False), fParsedFrameRate(0.0),
+    cpb_removal_delay_length_minus1(23), dpb_output_delay_length_minus1(23),
+    CpbDpbDelaysPresentFlag(0), pic_struct_present_flag(0),
+    DeltaTfiDivisor(2.0) {
+}
+
+H264or5VideoStreamParser::~H264or5VideoStreamParser() {
+}
+
+#define PREFIX_SEI_NUT 39 // for H.265
+#define SUFFIX_SEI_NUT 40 // for H.265
+Boolean H264or5VideoStreamParser::isSEI(u_int8_t nal_unit_type) {
+  return fHNumber == 264
+    ? nal_unit_type == 6
+    : (nal_unit_type == PREFIX_SEI_NUT || nal_unit_type == SUFFIX_SEI_NUT);
+}
+
+Boolean H264or5VideoStreamParser::isEOF(u_int8_t nal_unit_type) {
+  // "end of sequence" or "end of (bit)stream"
+  return fHNumber == 264
+    ? (nal_unit_type == 10 || nal_unit_type == 11)
+    : (nal_unit_type == 36 || nal_unit_type == 37);
+}
+
+Boolean H264or5VideoStreamParser::usuallyBeginsAccessUnit(u_int8_t nal_unit_type) {
+  return fHNumber == 264
+    ? (nal_unit_type >= 6 && nal_unit_type <= 9) || (nal_unit_type >= 14 && nal_unit_type <= 18)
+    : (nal_unit_type >= 32 && nal_unit_type <= 35) || (nal_unit_type == 39)
+    || (nal_unit_type >= 41 && nal_unit_type <= 44)
+    || (nal_unit_type >= 48 && nal_unit_type <= 55);
+}
+
+void H264or5VideoStreamParser
+::removeEmulationBytes(u_int8_t* nalUnitCopy, unsigned maxSize, unsigned& nalUnitCopySize) {
+  u_int8_t const* nalUnitOrig = fStartOfFrame + fOutputStartCodeSize;
+  unsigned const numBytesInNALunit = fTo - nalUnitOrig;
+  nalUnitCopySize
+    = removeH264or5EmulationBytes(nalUnitCopy, maxSize, nalUnitOrig, numBytesInNALunit);
+}
+
+#ifdef DEBUG
+char const* nal_unit_type_description_h264[32] = {
+  "Unspecified", //0
+  "Coded slice of a non-IDR picture", //1
+  "Coded slice data partition A", //2
+  "Coded slice data partition B", //3
+  "Coded slice data partition C", //4
+  "Coded slice of an IDR picture", //5
+  "Supplemental enhancement information (SEI)", //6
+  "Sequence parameter set", //7
+  "Picture parameter set", //8
+  "Access unit delimiter", //9
+  "End of sequence", //10
+  "End of stream", //11
+  "Filler data", //12
+  "Sequence parameter set extension", //13
+  "Prefix NAL unit", //14
+  "Subset sequence parameter set", //15
+  "Reserved", //16
+  "Reserved", //17
+  "Reserved", //18
+  "Coded slice of an auxiliary coded picture without partitioning", //19
+  "Coded slice extension", //20
+  "Reserved", //21
+  "Reserved", //22
+  "Reserved", //23
+  "Unspecified", //24
+  "Unspecified", //25
+  "Unspecified", //26
+  "Unspecified", //27
+  "Unspecified", //28
+  "Unspecified", //29
+  "Unspecified", //30
+  "Unspecified" //31
+};
+char const* nal_unit_type_description_h265[64] = {
+  "Coded slice segment of a non-TSA, non-STSA trailing picture", //0
+  "Coded slice segment of a non-TSA, non-STSA trailing picture", //1
+  "Coded slice segment of a TSA picture", //2
+  "Coded slice segment of a TSA picture", //3
+  "Coded slice segment of a STSA picture", //4
+  "Coded slice segment of a STSA picture", //5
+  "Coded slice segment of a RADL picture", //6
+  "Coded slice segment of a RADL picture", //7
+  "Coded slice segment of a RASL picture", //8
+  "Coded slice segment of a RASL picture", //9
+  "Reserved", //10
+  "Reserved", //11
+  "Reserved", //12
+  "Reserved", //13
+  "Reserved", //14
+  "Reserved", //15
+  "Coded slice segment of a BLA picture", //16
+  "Coded slice segment of a BLA picture", //17
+  "Coded slice segment of a BLA picture", //18
+  "Coded slice segment of an IDR picture", //19
+  "Coded slice segment of an IDR picture", //20
+  "Coded slice segment of a CRA picture", //21
+  "Reserved", //22
+  "Reserved", //23
+  "Reserved", //24
+  "Reserved", //25
+  "Reserved", //26
+  "Reserved", //27
+  "Reserved", //28
+  "Reserved", //29
+  "Reserved", //30
+  "Reserved", //31
+  "Video parameter set", //32
+  "Sequence parameter set", //33
+  "Picture parameter set", //34
+  "Access unit delimiter", //35
+  "End of sequence", //36
+  "End of bitstream", //37
+  "Filler data", //38
+  "Supplemental enhancement information (SEI)", //39
+  "Supplemental enhancement information (SEI)", //40
+  "Reserved", //41
+  "Reserved", //42
+  "Reserved", //43
+  "Reserved", //44
+  "Reserved", //45
+  "Reserved", //46
+  "Reserved", //47
+  "Unspecified", //48
+  "Unspecified", //49
+  "Unspecified", //50
+  "Unspecified", //51
+  "Unspecified", //52
+  "Unspecified", //53
+  "Unspecified", //54
+  "Unspecified", //55
+  "Unspecified", //56
+  "Unspecified", //57
+  "Unspecified", //58
+  "Unspecified", //59
+  "Unspecified", //60
+  "Unspecified", //61
+  "Unspecified", //62
+  "Unspecified", //63
+};
+#endif
+
+#ifdef DEBUG
+static unsigned numDebugTabs = 1;
+#define DEBUG_PRINT_TABS for (unsigned _i = 0; _i < numDebugTabs; ++_i) fprintf(stderr, "\t")
+#define DEBUG_PRINT(x) do { DEBUG_PRINT_TABS; fprintf(stderr, "%s: %d\n", #x, x); } while (0)
+#define DEBUG_STR(x) do { DEBUG_PRINT_TABS; fprintf(stderr, "%s\n", x); } while (0)
+class DebugTab {
+public:
+  DebugTab() {++numDebugTabs;}
+  ~DebugTab() {--numDebugTabs;}
+};
+#define DEBUG_TAB DebugTab dummy
+#else
+#define DEBUG_PRINT(x) do {x = x;} while (0)
+    // Note: the "x=x;" statement is intended to eliminate "unused variable" compiler warning messages
+#define DEBUG_STR(x) do {} while (0)
+#define DEBUG_TAB do {} while (0)
+#endif
+
+void H264or5VideoStreamParser::profile_tier_level(BitVector& bv, unsigned max_sub_layers_minus1) {
+  bv.skipBits(96);
+
+  unsigned i;
+  Boolean sub_layer_profile_present_flag[7], sub_layer_level_present_flag[7];
+  for (i = 0; i < max_sub_layers_minus1; ++i) {
+    sub_layer_profile_present_flag[i] = bv.get1BitBoolean();
+    sub_layer_level_present_flag[i] = bv.get1BitBoolean();
+  }
+  if (max_sub_layers_minus1 > 0) {
+    bv.skipBits(2*(8-max_sub_layers_minus1)); // reserved_zero_2bits
+  }
+  for (i = 0; i < max_sub_layers_minus1; ++i) {
+    if (sub_layer_profile_present_flag[i]) {
+      bv.skipBits(88);
+    }
+    if (sub_layer_level_present_flag[i]) {
+      bv.skipBits(8); // sub_layer_level_idc[i]
+    }
+  }
+}
+
+void H264or5VideoStreamParser
+::analyze_vui_parameters(BitVector& bv,
+			 unsigned& num_units_in_tick, unsigned& time_scale) {
+  Boolean aspect_ratio_info_present_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(aspect_ratio_info_present_flag);
+  if (aspect_ratio_info_present_flag) {
+    DEBUG_TAB;
+    unsigned aspect_ratio_idc = bv.getBits(8);
+    DEBUG_PRINT(aspect_ratio_idc);
+    if (aspect_ratio_idc == 255/*Extended_SAR*/) {
+      bv.skipBits(32); // sar_width; sar_height
+    }
+  }
+  Boolean overscan_info_present_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(overscan_info_present_flag);
+  if (overscan_info_present_flag) {
+    bv.skipBits(1); // overscan_appropriate_flag
+  }
+  Boolean video_signal_type_present_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(video_signal_type_present_flag);
+  if (video_signal_type_present_flag) {
+    DEBUG_TAB;
+    bv.skipBits(4); // video_format; video_full_range_flag
+    Boolean colour_description_present_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(colour_description_present_flag);
+    if (colour_description_present_flag) {
+      bv.skipBits(24); // colour_primaries; transfer_characteristics; matrix_coefficients
+    }
+  }
+  Boolean chroma_loc_info_present_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(chroma_loc_info_present_flag);
+  if (chroma_loc_info_present_flag) {
+    (void)bv.get_expGolomb(); // chroma_sample_loc_type_top_field
+    (void)bv.get_expGolomb(); // chroma_sample_loc_type_bottom_field
+  }
+  if (fHNumber == 265) {
+    bv.skipBits(2); // neutral_chroma_indication_flag, field_seq_flag
+    Boolean frame_field_info_present_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(frame_field_info_present_flag);
+    pic_struct_present_flag = frame_field_info_present_flag; // hack to make H.265 like H.264
+    Boolean default_display_window_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(default_display_window_flag);
+    if (default_display_window_flag) {
+      (void)bv.get_expGolomb(); // def_disp_win_left_offset
+      (void)bv.get_expGolomb(); // def_disp_win_right_offset
+      (void)bv.get_expGolomb(); // def_disp_win_top_offset
+      (void)bv.get_expGolomb(); // def_disp_win_bottom_offset
+    }
+  }
+  Boolean timing_info_present_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(timing_info_present_flag);
+  if (timing_info_present_flag) {
+    DEBUG_TAB;
+    num_units_in_tick = bv.getBits(32);
+    DEBUG_PRINT(num_units_in_tick);
+    time_scale = bv.getBits(32);
+    DEBUG_PRINT(time_scale);
+    if (fHNumber == 264) {
+      Boolean fixed_frame_rate_flag = bv.get1BitBoolean();
+      DEBUG_PRINT(fixed_frame_rate_flag);
+    } else { // 265
+      Boolean vui_poc_proportional_to_timing_flag = bv.get1BitBoolean();
+      DEBUG_PRINT(vui_poc_proportional_to_timing_flag);
+      if (vui_poc_proportional_to_timing_flag) {
+	unsigned vui_num_ticks_poc_diff_one_minus1 = bv.get_expGolomb();
+	DEBUG_PRINT(vui_num_ticks_poc_diff_one_minus1);
+      }
+      return; // For H.265, don't bother parsing any more of this #####
+    }
+  }
+  // The following is H.264 only: #####
+  Boolean nal_hrd_parameters_present_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(nal_hrd_parameters_present_flag);
+  if (nal_hrd_parameters_present_flag) analyze_hrd_parameters(bv);
+  Boolean vcl_hrd_parameters_present_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(vcl_hrd_parameters_present_flag);
+  if (vcl_hrd_parameters_present_flag) analyze_hrd_parameters(bv);
+  CpbDpbDelaysPresentFlag = nal_hrd_parameters_present_flag || vcl_hrd_parameters_present_flag;
+  if (CpbDpbDelaysPresentFlag) {
+    bv.skipBits(1); // low_delay_hrd_flag
+  }
+  pic_struct_present_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(pic_struct_present_flag);
+}
+
+void H264or5VideoStreamParser::analyze_hrd_parameters(BitVector& bv) {
+  DEBUG_TAB;
+  unsigned cpb_cnt_minus1 = bv.get_expGolomb();
+  DEBUG_PRINT(cpb_cnt_minus1);
+  unsigned bit_rate_scale = bv.getBits(4);
+  DEBUG_PRINT(bit_rate_scale);
+  unsigned cpb_size_scale = bv.getBits(4);
+  DEBUG_PRINT(cpb_size_scale);
+  for (unsigned SchedSelIdx = 0; SchedSelIdx <= cpb_cnt_minus1; ++SchedSelIdx) {
+    DEBUG_TAB;
+    DEBUG_PRINT(SchedSelIdx);
+    unsigned bit_rate_value_minus1 = bv.get_expGolomb();
+    DEBUG_PRINT(bit_rate_value_minus1);
+    unsigned cpb_size_value_minus1 = bv.get_expGolomb();
+    DEBUG_PRINT(cpb_size_value_minus1);
+    Boolean cbr_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(cbr_flag);
+  }
+  unsigned initial_cpb_removal_delay_length_minus1 = bv.getBits(5);
+  DEBUG_PRINT(initial_cpb_removal_delay_length_minus1);
+  cpb_removal_delay_length_minus1 = bv.getBits(5);
+  DEBUG_PRINT(cpb_removal_delay_length_minus1);
+  dpb_output_delay_length_minus1 = bv.getBits(5);
+  DEBUG_PRINT(dpb_output_delay_length_minus1);
+  unsigned time_offset_length = bv.getBits(5);
+  DEBUG_PRINT(time_offset_length);
+}
+
+void H264or5VideoStreamParser
+::analyze_video_parameter_set_data(unsigned& num_units_in_tick, unsigned& time_scale) {
+  num_units_in_tick = time_scale = 0; // default values
+
+  // Begin by making a copy of the NAL unit data, removing any 'emulation prevention' bytes:
+  u_int8_t vps[VPS_MAX_SIZE];
+  unsigned vpsSize;
+  removeEmulationBytes(vps, sizeof vps, vpsSize);
+
+  BitVector bv(vps, 0, 8*vpsSize);
+
+  // Assert: fHNumber == 265 (because this function is called only when parsing H.265)
+  unsigned i;
+
+  bv.skipBits(28); // nal_unit_header, vps_video_parameter_set_id, vps_reserved_three_2bits, vps_max_layers_minus1
+  unsigned vps_max_sub_layers_minus1 = bv.getBits(3);
+  DEBUG_PRINT(vps_max_sub_layers_minus1);
+  bv.skipBits(17); // vps_temporal_id_nesting_flag, vps_reserved_0xffff_16bits
+  profile_tier_level(bv, vps_max_sub_layers_minus1);
+  Boolean vps_sub_layer_ordering_info_present_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(vps_sub_layer_ordering_info_present_flag);
+  for (i = vps_sub_layer_ordering_info_present_flag ? 0 : vps_max_sub_layers_minus1;
+       i <= vps_max_sub_layers_minus1; ++i) {
+    (void)bv.get_expGolomb(); // vps_max_dec_pic_buffering_minus1[i]
+    (void)bv.get_expGolomb(); // vps_max_num_reorder_pics[i]
+    (void)bv.get_expGolomb(); // vps_max_latency_increase_plus1[i]
+  }    
+  unsigned vps_max_layer_id = bv.getBits(6);
+  DEBUG_PRINT(vps_max_layer_id);
+  unsigned vps_num_layer_sets_minus1 = bv.get_expGolomb();
+  DEBUG_PRINT(vps_num_layer_sets_minus1);
+  for (i = 1; i <= vps_num_layer_sets_minus1; ++i) {
+    bv.skipBits(vps_max_layer_id+1); // layer_id_included_flag[i][0..vps_max_layer_id]
+  }
+  Boolean vps_timing_info_present_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(vps_timing_info_present_flag);
+  if (vps_timing_info_present_flag) {
+    DEBUG_TAB;
+    num_units_in_tick = bv.getBits(32);
+    DEBUG_PRINT(num_units_in_tick);
+    time_scale = bv.getBits(32);
+    DEBUG_PRINT(time_scale);
+    Boolean vps_poc_proportional_to_timing_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(vps_poc_proportional_to_timing_flag);
+    if (vps_poc_proportional_to_timing_flag) {
+      unsigned vps_num_ticks_poc_diff_one_minus1 = bv.get_expGolomb();
+      DEBUG_PRINT(vps_num_ticks_poc_diff_one_minus1);
+    }
+  }
+  Boolean vps_extension_flag = bv.get1BitBoolean();
+  DEBUG_PRINT(vps_extension_flag);
+}
+
+void H264or5VideoStreamParser
+::analyze_seq_parameter_set_data(unsigned& num_units_in_tick, unsigned& time_scale) {
+  num_units_in_tick = time_scale = 0; // default values
+
+  // Begin by making a copy of the NAL unit data, removing any 'emulation prevention' bytes:
+  u_int8_t sps[SPS_MAX_SIZE];
+  unsigned spsSize;
+  removeEmulationBytes(sps, sizeof sps, spsSize);
+
+  BitVector bv(sps, 0, 8*spsSize);
+
+  if (fHNumber == 264) {
+    bv.skipBits(8); // forbidden_zero_bit; nal_ref_idc; nal_unit_type
+    unsigned profile_idc = bv.getBits(8);
+    DEBUG_PRINT(profile_idc);
+    unsigned constraint_setN_flag = bv.getBits(8); // also "reserved_zero_2bits" at end
+    DEBUG_PRINT(constraint_setN_flag);
+    unsigned level_idc = bv.getBits(8);
+    DEBUG_PRINT(level_idc);
+    unsigned seq_parameter_set_id = bv.get_expGolomb();
+    DEBUG_PRINT(seq_parameter_set_id);
+    if (profile_idc == 100 || profile_idc == 110 || profile_idc == 122 || profile_idc == 244 || profile_idc == 44 || profile_idc == 83 || profile_idc == 86 || profile_idc == 118 || profile_idc == 128 ) {
+      DEBUG_TAB;
+      unsigned chroma_format_idc = bv.get_expGolomb();
+      DEBUG_PRINT(chroma_format_idc);
+      if (chroma_format_idc == 3) {
+	DEBUG_TAB;
+	Boolean separate_colour_plane_flag = bv.get1BitBoolean();
+	DEBUG_PRINT(separate_colour_plane_flag);
+      }
+      (void)bv.get_expGolomb(); // bit_depth_luma_minus8
+      (void)bv.get_expGolomb(); // bit_depth_chroma_minus8
+      bv.skipBits(1); // qpprime_y_zero_transform_bypass_flag
+      Boolean seq_scaling_matrix_present_flag = bv.get1BitBoolean();
+      DEBUG_PRINT(seq_scaling_matrix_present_flag);
+      if (seq_scaling_matrix_present_flag) {
+	for (int i = 0; i < ((chroma_format_idc != 3) ? 8 : 12); ++i) {
+	  DEBUG_TAB;
+	  DEBUG_PRINT(i);
+	  Boolean seq_scaling_list_present_flag = bv.get1BitBoolean();
+	  DEBUG_PRINT(seq_scaling_list_present_flag);
+	  if (seq_scaling_list_present_flag) {
+	    DEBUG_TAB;
+	    unsigned sizeOfScalingList = i < 6 ? 16 : 64;
+	    unsigned lastScale = 8;
+	    unsigned nextScale = 8;
+	    for (unsigned j = 0; j < sizeOfScalingList; ++j) {
+	      DEBUG_TAB;
+	      DEBUG_PRINT(j);
+	      DEBUG_PRINT(nextScale);
+	      if (nextScale != 0) {
+		DEBUG_TAB;
+		int delta_scale = bv.get_expGolombSigned();
+		DEBUG_PRINT(delta_scale);
+		nextScale = (lastScale + delta_scale + 256) % 256;
+	      }
+	      lastScale = (nextScale == 0) ? lastScale : nextScale;
+	      DEBUG_PRINT(lastScale);
+	    }
+	  }
+	}
+      }
+    }
+    unsigned log2_max_frame_num_minus4 = bv.get_expGolomb();
+    DEBUG_PRINT(log2_max_frame_num_minus4);
+    unsigned pic_order_cnt_type = bv.get_expGolomb();
+    DEBUG_PRINT(pic_order_cnt_type);
+    if (pic_order_cnt_type == 0) {
+      DEBUG_TAB;
+      unsigned log2_max_pic_order_cnt_lsb_minus4 = bv.get_expGolomb();
+      DEBUG_PRINT(log2_max_pic_order_cnt_lsb_minus4);
+    } else if (pic_order_cnt_type == 1) {
+      DEBUG_TAB;
+      bv.skipBits(1); // delta_pic_order_always_zero_flag
+      (void)bv.get_expGolombSigned(); // offset_for_non_ref_pic
+      (void)bv.get_expGolombSigned(); // offset_for_top_to_bottom_field
+      unsigned num_ref_frames_in_pic_order_cnt_cycle = bv.get_expGolomb();
+      DEBUG_PRINT(num_ref_frames_in_pic_order_cnt_cycle);
+      for (unsigned i = 0; i < num_ref_frames_in_pic_order_cnt_cycle; ++i) {
+	(void)bv.get_expGolombSigned(); // offset_for_ref_frame[i]
+      }
+    }
+    unsigned max_num_ref_frames = bv.get_expGolomb();
+    DEBUG_PRINT(max_num_ref_frames);
+    Boolean gaps_in_frame_num_value_allowed_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(gaps_in_frame_num_value_allowed_flag);
+    unsigned pic_width_in_mbs_minus1 = bv.get_expGolomb();
+    DEBUG_PRINT(pic_width_in_mbs_minus1);
+    unsigned pic_height_in_map_units_minus1 = bv.get_expGolomb();
+    DEBUG_PRINT(pic_height_in_map_units_minus1);
+    Boolean frame_mbs_only_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(frame_mbs_only_flag);
+    if (!frame_mbs_only_flag) {
+      bv.skipBits(1); // mb_adaptive_frame_field_flag
+    }
+    bv.skipBits(1); // direct_8x8_inference_flag
+    Boolean frame_cropping_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(frame_cropping_flag);
+    if (frame_cropping_flag) {
+      (void)bv.get_expGolomb(); // frame_crop_left_offset
+      (void)bv.get_expGolomb(); // frame_crop_right_offset
+      (void)bv.get_expGolomb(); // frame_crop_top_offset
+      (void)bv.get_expGolomb(); // frame_crop_bottom_offset
+    }
+    Boolean vui_parameters_present_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(vui_parameters_present_flag);
+    if (vui_parameters_present_flag) {
+      DEBUG_TAB;
+      analyze_vui_parameters(bv, num_units_in_tick, time_scale);
+    }
+  } else { // 265
+    unsigned i;
+
+    bv.skipBits(16); // nal_unit_header
+    bv.skipBits(4); // sps_video_parameter_set_id
+    unsigned sps_max_sub_layers_minus1 = bv.getBits(3);
+    DEBUG_PRINT(sps_max_sub_layers_minus1);
+    bv.skipBits(1); // sps_temporal_id_nesting_flag
+    profile_tier_level(bv, sps_max_sub_layers_minus1);
+    (void)bv.get_expGolomb(); // sps_seq_parameter_set_id
+    unsigned chroma_format_idc = bv.get_expGolomb();
+    DEBUG_PRINT(chroma_format_idc);
+    if (chroma_format_idc == 3) bv.skipBits(1); // separate_colour_plane_flag
+    unsigned pic_width_in_luma_samples = bv.get_expGolomb();
+    DEBUG_PRINT(pic_width_in_luma_samples);
+    unsigned pic_height_in_luma_samples = bv.get_expGolomb();
+    DEBUG_PRINT(pic_height_in_luma_samples);
+    Boolean conformance_window_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(conformance_window_flag);
+    if (conformance_window_flag) {
+      DEBUG_TAB;
+      unsigned conf_win_left_offset = bv.get_expGolomb();
+      DEBUG_PRINT(conf_win_left_offset);
+      unsigned conf_win_right_offset = bv.get_expGolomb();
+      DEBUG_PRINT(conf_win_right_offset);
+      unsigned conf_win_top_offset = bv.get_expGolomb();
+      DEBUG_PRINT(conf_win_top_offset);
+      unsigned conf_win_bottom_offset = bv.get_expGolomb();
+      DEBUG_PRINT(conf_win_bottom_offset);
+    }
+    (void)bv.get_expGolomb(); // bit_depth_luma_minus8
+    (void)bv.get_expGolomb(); // bit_depth_chroma_minus8
+    unsigned log2_max_pic_order_cnt_lsb_minus4 = bv.get_expGolomb();
+    Boolean sps_sub_layer_ordering_info_present_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(sps_sub_layer_ordering_info_present_flag);
+    for (i = (sps_sub_layer_ordering_info_present_flag ? 0 : sps_max_sub_layers_minus1);
+	 i <= sps_max_sub_layers_minus1; ++i) {
+      (void)bv.get_expGolomb(); // sps_max_dec_pic_buffering_minus1[i]
+      (void)bv.get_expGolomb(); // sps_max_num_reorder_pics[i]
+      (void)bv.get_expGolomb(); // sps_max_latency_increase[i]
+    }
+    (void)bv.get_expGolomb(); // log2_min_luma_coding_block_size_minus3
+    (void)bv.get_expGolomb(); // log2_diff_max_min_luma_coding_block_size
+    (void)bv.get_expGolomb(); // log2_min_transform_block_size_minus2
+    (void)bv.get_expGolomb(); // log2_diff_max_min_transform_block_size
+    (void)bv.get_expGolomb(); // max_transform_hierarchy_depth_inter
+    (void)bv.get_expGolomb(); // max_transform_hierarchy_depth_intra
+    Boolean scaling_list_enabled_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(scaling_list_enabled_flag);
+    if (scaling_list_enabled_flag) {
+      DEBUG_TAB;
+      Boolean sps_scaling_list_data_present_flag = bv.get1BitBoolean();
+      DEBUG_PRINT(sps_scaling_list_data_present_flag);
+      if (sps_scaling_list_data_present_flag) {
+	// scaling_list_data()
+	DEBUG_TAB;
+	for (unsigned sizeId = 0; sizeId < 4; ++sizeId) {
+	  DEBUG_PRINT(sizeId);
+	  for (unsigned matrixId = 0; matrixId < (sizeId == 3 ? 2 : 6); ++matrixId) {
+	    DEBUG_TAB;
+	    DEBUG_PRINT(matrixId);
+	    Boolean scaling_list_pred_mode_flag = bv.get1BitBoolean();
+	    DEBUG_PRINT(scaling_list_pred_mode_flag);
+	    if (!scaling_list_pred_mode_flag) {
+	      (void)bv.get_expGolomb(); // scaling_list_pred_matrix_id_delta[sizeId][matrixId]
+	    } else {
+	      unsigned const c = 1 << (4+(sizeId<<1));
+	      unsigned coefNum = c < 64 ? c : 64;
+	      if (sizeId > 1) {
+		(void)bv.get_expGolomb(); // scaling_list_dc_coef_minus8[sizeId][matrixId]
+	      }
+	      for (i = 0; i < coefNum; ++i) {
+		(void)bv.get_expGolomb(); // scaling_list_delta_coef
+	      }
+	    }
+	  } 
+	}
+      }
+    }
+    bv.skipBits(2); // amp_enabled_flag, sample_adaptive_offset_enabled_flag
+    Boolean pcm_enabled_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(pcm_enabled_flag);
+    if (pcm_enabled_flag) {
+      bv.skipBits(8); // pcm_sample_bit_depth_luma_minus1, pcm_sample_bit_depth_chroma_minus1
+      (void)bv.get_expGolomb(); // log2_min_pcm_luma_coding_block_size_minus3
+      (void)bv.get_expGolomb(); // log2_diff_max_min_pcm_luma_coding_block_size
+      bv.skipBits(1); // pcm_loop_filter_disabled_flag
+    }
+    unsigned num_short_term_ref_pic_sets = bv.get_expGolomb();
+    DEBUG_PRINT(num_short_term_ref_pic_sets);
+    unsigned num_negative_pics = 0, prev_num_negative_pics = 0;
+    unsigned num_positive_pics = 0, prev_num_positive_pics = 0;
+    for (i = 0; i < num_short_term_ref_pic_sets; ++i) {
+      // short_term_ref_pic_set(i):
+      DEBUG_TAB;
+      DEBUG_PRINT(i);
+      Boolean inter_ref_pic_set_prediction_flag = False;
+      if (i != 0) {
+	inter_ref_pic_set_prediction_flag = bv.get1BitBoolean();
+      }
+      DEBUG_PRINT(inter_ref_pic_set_prediction_flag);
+      if (inter_ref_pic_set_prediction_flag) {
+	DEBUG_TAB;
+	if (i == num_short_term_ref_pic_sets) {
+	  // This can't happen here, but it's in the spec, so we include it for completeness
+	  (void)bv.get_expGolomb(); // delta_idx_minus1
+	}
+	bv.skipBits(1); // delta_rps_sign
+	(void)bv.get_expGolomb(); // abs_delta_rps_minus1
+	unsigned NumDeltaPocs = prev_num_negative_pics + prev_num_positive_pics; // correct???
+	for (unsigned j = 0; j < NumDeltaPocs; ++j) {
+	  DEBUG_PRINT(j);
+	  Boolean used_by_curr_pic_flag = bv.get1BitBoolean();
+	  DEBUG_PRINT(used_by_curr_pic_flag);
+	  if (!used_by_curr_pic_flag) bv.skipBits(1); // use_delta_flag[j]
+	}
+      } else {
+	prev_num_negative_pics = num_negative_pics;
+	num_negative_pics = bv.get_expGolomb();
+	DEBUG_PRINT(num_negative_pics);
+	prev_num_positive_pics = num_positive_pics;
+	num_positive_pics = bv.get_expGolomb();
+	DEBUG_PRINT(num_positive_pics);
+	unsigned k;
+	for (k = 0; k < num_negative_pics; ++k) {
+	  (void)bv.get_expGolomb(); // delta_poc_s0_minus1[k]
+	  bv.skipBits(1); // used_by_curr_pic_s0_flag[k]
+	}
+	for (k = 0; k < num_positive_pics; ++k) {
+	  (void)bv.get_expGolomb(); // delta_poc_s1_minus1[k]
+	  bv.skipBits(1); // used_by_curr_pic_s1_flag[k]
+	}
+      }
+    }
+    Boolean long_term_ref_pics_present_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(long_term_ref_pics_present_flag);
+    if (long_term_ref_pics_present_flag) {
+      DEBUG_TAB;
+      unsigned num_long_term_ref_pics_sps = bv.get_expGolomb();
+      DEBUG_PRINT(num_long_term_ref_pics_sps);
+      for (i = 0; i < num_long_term_ref_pics_sps; ++i) {
+	bv.skipBits(log2_max_pic_order_cnt_lsb_minus4); // lt_ref_pic_poc_lsb_sps[i]
+	bv.skipBits(1); // used_by_curr_pic_lt_sps_flag[1]
+      }
+    }
+    bv.skipBits(2); // sps_temporal_mvp_enabled_flag, strong_intra_smoothing_enabled_flag
+    Boolean vui_parameters_present_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(vui_parameters_present_flag);
+    if (vui_parameters_present_flag) {
+      DEBUG_TAB;
+      analyze_vui_parameters(bv, num_units_in_tick, time_scale);
+    }
+    Boolean sps_extension_flag = bv.get1BitBoolean();
+    DEBUG_PRINT(sps_extension_flag);
+  }
+}
+
+#define SEI_MAX_SIZE 5000 // larger than the largest possible SEI NAL unit
+
+#ifdef DEBUG
+#define MAX_SEI_PAYLOAD_TYPE_DESCRIPTION_H264 46
+char const* sei_payloadType_description_h264[MAX_SEI_PAYLOAD_TYPE_DESCRIPTION_H264+1] = {
+  "buffering_period", //0
+  "pic_timing", //1
+  "pan_scan_rect", //2
+  "filler_payload", //3
+  "user_data_registered_itu_t_t35", //4
+  "user_data_unregistered", //5
+  "recovery_point", //6
+  "dec_ref_pic_marking_repetition", //7
+  "spare_pic", //8
+  "scene_info", //9
+  "sub_seq_info", //10
+  "sub_seq_layer_characteristics", //11
+  "sub_seq_characteristics", //12
+  "full_frame_freeze", //13
+  "full_frame_freeze_release", //14
+  "full_frame_snapshot", //15
+  "progressive_refinement_segment_start", //16
+  "progressive_refinement_segment_end", //17
+  "motion_constrained_slice_group_set", //18
+  "film_grain_characteristics", //19
+  "deblocking_filter_display_preference", //20
+  "stereo_video_info", //21
+  "post_filter_hint", //22
+  "tone_mapping_info", //23
+  "scalability_info", //24
+  "sub_pic_scalable_layer", //25
+  "non_required_layer_rep", //26
+  "priority_layer_info", //27
+  "layers_not_present", //28
+  "layer_dependency_change", //29
+  "scalable_nesting", //30
+  "base_layer_temporal_hrd", //31
+  "quality_layer_integrity_check", //32
+  "redundant_pic_property", //33
+  "tl0_dep_rep_index", //34
+  "tl_switching_point", //35
+  "parallel_decoding_info", //36
+  "mvc_scalable_nesting", //37
+  "view_scalability_info", //38
+  "multiview_scene_info", //39
+  "multiview_acquisition_info", //40
+  "non_required_view_component", //41
+  "view_dependency_change", //42
+  "operation_points_not_present", //43
+  "base_view_temporal_hrd", //44
+  "frame_packing_arrangement", //45
+  "reserved_sei_message" // 46 or higher
+};
+#endif
+
+void H264or5VideoStreamParser::analyze_sei_data(u_int8_t nal_unit_type) {
+  // Begin by making a copy of the NAL unit data, removing any 'emulation prevention' bytes:
+  u_int8_t sei[SEI_MAX_SIZE];
+  unsigned seiSize;
+  removeEmulationBytes(sei, sizeof sei, seiSize);
+
+  unsigned j = 1; // skip the initial byte (forbidden_zero_bit; nal_ref_idc; nal_unit_type); we've already seen it 
+  while (j < seiSize) {
+    unsigned payloadType = 0;
+    do {
+      payloadType += sei[j];
+    } while (sei[j++] == 255 && j < seiSize);
+    if (j >= seiSize) break;
+
+    unsigned payloadSize = 0;
+    do {
+      payloadSize += sei[j];
+    } while (sei[j++] == 255 && j < seiSize);
+    if (j >= seiSize) break;
+
+#ifdef DEBUG
+    char const* description;
+    if (fHNumber == 264) {
+      unsigned descriptionNum = payloadType <= MAX_SEI_PAYLOAD_TYPE_DESCRIPTION_H264
+	? payloadType : MAX_SEI_PAYLOAD_TYPE_DESCRIPTION_H264;
+      description = sei_payloadType_description_h264[descriptionNum];
+    } else { // 265
+      description =
+	payloadType == 3 ? "filler_payload" :
+	payloadType == 4 ? "user_data_registered_itu_t_t35" :
+	payloadType == 5 ? "user_data_unregistered" :
+	payloadType == 17 ? "progressive_refinement_segment_end" :
+	payloadType == 22 ? "post_filter_hint" :
+	(payloadType == 132 && nal_unit_type == SUFFIX_SEI_NUT) ? "decoded_picture_hash" :
+	nal_unit_type == SUFFIX_SEI_NUT ? "reserved_sei_message" :
+	payloadType == 0 ? "buffering_period" :
+	payloadType == 1 ? "pic_timing" :
+	payloadType == 2 ? "pan_scan_rect" :
+	payloadType == 6 ? "recovery_point" :
+	payloadType == 9 ? "scene_info" :
+	payloadType == 15 ? "picture_snapshot" :
+	payloadType == 16 ? "progressive_refinement_segment_start" :
+	payloadType == 19 ? "film_grain_characteristics" :
+	payloadType == 23 ? "tone_mapping_info" :
+	payloadType == 45 ? "frame_packing_arrangement" :
+	payloadType == 47 ? "display_orientation" :
+	payloadType == 128 ? "structure_of_pictures_info" :
+	payloadType == 129 ? "active_parameter_sets" :
+	payloadType == 130 ? "decoding_unit_info" :
+	payloadType == 131 ? "temporal_sub_layer_zero_index" :
+	payloadType == 133 ? "scalable_nesting" :
+	payloadType == 134 ? "region_refresh_info" : "reserved_sei_message";
+    }
+    fprintf(stderr, "\tpayloadType %d (\"%s\"); payloadSize %d\n", payloadType, description, payloadSize);
+#endif
+
+    analyze_sei_payload(payloadType, payloadSize, &sei[j]);
+    j += payloadSize;
+  }
+}
+
+void H264or5VideoStreamParser
+::analyze_sei_payload(unsigned payloadType, unsigned payloadSize, u_int8_t* payload) {
+  if (payloadType == 1/* pic_timing, for both H.264 and H.265 */) {
+    BitVector bv(payload, 0, 8*payloadSize);
+
+    DEBUG_TAB;
+    if (CpbDpbDelaysPresentFlag) {
+      unsigned cpb_removal_delay = bv.getBits(cpb_removal_delay_length_minus1 + 1);
+      DEBUG_PRINT(cpb_removal_delay);
+      unsigned dpb_output_delay = bv.getBits(dpb_output_delay_length_minus1 + 1);
+      DEBUG_PRINT(dpb_output_delay);
+    }
+    double prevDeltaTfiDivisor = DeltaTfiDivisor; 
+    if (pic_struct_present_flag) {
+      unsigned pic_struct = bv.getBits(4);
+      DEBUG_PRINT(pic_struct);
+      // Use this to set "DeltaTfiDivisor" (which is used to compute the frame rate):
+      if (fHNumber == 264) {
+	DeltaTfiDivisor =
+	  pic_struct == 0 ? 2.0 :
+	  pic_struct <= 2 ? 1.0 :
+	  pic_struct <= 4 ? 2.0 :
+	  pic_struct <= 6 ? 3.0 :
+	  pic_struct == 7 ? 4.0 :
+	  pic_struct == 8 ? 6.0 :
+	  2.0;
+      } else { // H.265
+	DeltaTfiDivisor =
+	  pic_struct == 0 ? 2.0 :
+	  pic_struct <= 2 ? 1.0 :
+	  pic_struct <= 4 ? 2.0 :
+	  pic_struct <= 6 ? 3.0 :
+	  pic_struct == 7 ? 2.0 :
+	  pic_struct == 8 ? 3.0 :
+	  pic_struct <= 12 ? 1.0 :
+	  2.0;
+      }
+    } else {
+      if (fHNumber == 264) {
+	// Need to get field_pic_flag from slice_header to set this properly! #####
+      } else { // H.265
+	DeltaTfiDivisor = 1.0;
+      }
+    }
+    // If "DeltaTfiDivisor" has changed, and we've already computed the frame rate, then
+    // adjust it, based on the new value of "DeltaTfiDivisor":
+    if (DeltaTfiDivisor != prevDeltaTfiDivisor && fParsedFrameRate != 0.0) {
+      usingSource()->fFrameRate = fParsedFrameRate
+	= fParsedFrameRate*(prevDeltaTfiDivisor/DeltaTfiDivisor);
+#ifdef DEBUG
+      fprintf(stderr, "Changed frame rate to %f fps\n", usingSource()->fFrameRate);
+#endif
+    }
+    // Ignore the rest of the payload (timestamps) for now... #####
+  }
+}
+
+void H264or5VideoStreamParser::flushInput() {
+  fHaveSeenFirstStartCode = False;
+  fHaveSeenFirstByteOfNALUnit = False;
+
+  StreamParser::flushInput();
+}
+
+unsigned H264or5VideoStreamParser::parse() {
+  try {
+    // The stream must start with a 0x00000001:
+    if (!fHaveSeenFirstStartCode) {
+      // Skip over any input bytes that precede the first 0x00000001:
+      u_int32_t first4Bytes;
+      while ((first4Bytes = test4Bytes()) != 0x00000001) {
+	get1Byte(); setParseState(); // ensures that we progress over bad data
+      }
+      skipBytes(4); // skip this initial code
+      
+      setParseState();
+      fHaveSeenFirstStartCode = True; // from now on
+    }
+    
+    if (fOutputStartCodeSize > 0 && curFrameSize() == 0 && !haveSeenEOF()) {
+      // Include a start code in the output:
+      save4Bytes(0x00000001);
+    }
+
+    // Then save everything up until the next 0x00000001 (4 bytes) or 0x000001 (3 bytes), or we hit EOF.
+    // Also make note of the first byte, because it contains the "nal_unit_type": 
+    if (haveSeenEOF()) {
+      // We hit EOF the last time that we tried to parse this data, so we know that any remaining unparsed data
+      // forms a complete NAL unit, and that there's no 'start code' at the end:
+      unsigned remainingDataSize = totNumValidBytes() - curOffset();
+#ifdef DEBUG
+      unsigned const trailingNALUnitSize = remainingDataSize;
+#endif
+      while (remainingDataSize > 0) {
+	u_int8_t nextByte = get1Byte();
+	if (!fHaveSeenFirstByteOfNALUnit) {
+	  fFirstByteOfNALUnit = nextByte;
+	  fHaveSeenFirstByteOfNALUnit = True;
+	}
+	saveByte(nextByte);
+	--remainingDataSize;
+      }
+
+#ifdef DEBUG
+      if (fHNumber == 264) {
+	u_int8_t nal_ref_idc = (fFirstByteOfNALUnit&0x60)>>5;
+	u_int8_t nal_unit_type = fFirstByteOfNALUnit&0x1F;
+	fprintf(stderr, "Parsed trailing %d-byte NAL-unit (nal_ref_idc: %d, nal_unit_type: %d (\"%s\"))\n",
+		trailingNALUnitSize, nal_ref_idc, nal_unit_type, nal_unit_type_description_h264[nal_unit_type]);
+      } else { // 265
+	u_int8_t nal_unit_type = (fFirstByteOfNALUnit&0x7E)>>1;
+	fprintf(stderr, "Parsed trailing %d-byte NAL-unit (nal_unit_type: %d (\"%s\"))\n",
+		trailingNALUnitSize, nal_unit_type, nal_unit_type_description_h265[nal_unit_type]);
+      }
+#endif
+
+      (void)get1Byte(); // forces another read, which will cause EOF to get handled for real this time
+      return 0;
+    } else {
+      u_int32_t next4Bytes = test4Bytes();
+      if (!fHaveSeenFirstByteOfNALUnit) {
+	fFirstByteOfNALUnit = next4Bytes>>24;
+	fHaveSeenFirstByteOfNALUnit = True;
+      }
+      while (next4Bytes != 0x00000001 && (next4Bytes&0xFFFFFF00) != 0x00000100) {
+	// We save at least some of "next4Bytes".
+	if ((unsigned)(next4Bytes&0xFF) > 1) {
+	  // Common case: 0x00000001 or 0x000001 definitely doesn't begin anywhere in "next4Bytes", so we save all of it:
+	  save4Bytes(next4Bytes);
+	  skipBytes(4);
+	} else {
+	  // Save the first byte, and continue testing the rest:
+	  saveByte(next4Bytes>>24);
+	  skipBytes(1);
+	}
+	setParseState(); // ensures forward progress
+	next4Bytes = test4Bytes();
+      }
+      // Assert: next4Bytes starts with 0x00000001 or 0x000001, and we've saved all previous bytes (forming a complete NAL unit).
+      // Skip over these remaining bytes, up until the start of the next NAL unit:
+      if (next4Bytes == 0x00000001) {
+	skipBytes(4);
+      } else {
+	skipBytes(3);
+      }
+    }
+
+    fHaveSeenFirstByteOfNALUnit = False; // for the next NAL unit that we'll parse
+    u_int8_t nal_unit_type;
+    if (fHNumber == 264) {
+      nal_unit_type = fFirstByteOfNALUnit&0x1F;
+#ifdef DEBUG
+      u_int8_t nal_ref_idc = (fFirstByteOfNALUnit&0x60)>>5;
+      fprintf(stderr, "Parsed %d-byte NAL-unit (nal_ref_idc: %d, nal_unit_type: %d (\"%s\"))\n",
+	      curFrameSize()-fOutputStartCodeSize, nal_ref_idc, nal_unit_type, nal_unit_type_description_h264[nal_unit_type]);
+#endif
+    } else { // 265
+      nal_unit_type = (fFirstByteOfNALUnit&0x7E)>>1;
+#ifdef DEBUG
+      fprintf(stderr, "Parsed %d-byte NAL-unit (nal_unit_type: %d (\"%s\"))\n",
+	      curFrameSize()-fOutputStartCodeSize, nal_unit_type, nal_unit_type_description_h265[nal_unit_type]);
+#endif
+    }
+
+    // Now that we have found (& copied) a NAL unit, process it if it's of special interest to us:
+    if (isVPS(nal_unit_type)) { // Video parameter set
+      // First, save a copy of this NAL unit, in case the downstream object wants to see it:
+      usingSource()->saveCopyOfVPS(fStartOfFrame + fOutputStartCodeSize, curFrameSize() - fOutputStartCodeSize);
+
+      if (fParsedFrameRate == 0.0) {
+	// We haven't yet parsed a frame rate from the stream.
+	// So parse this NAL unit to check whether frame rate information is present:
+	unsigned num_units_in_tick, time_scale;
+	analyze_video_parameter_set_data(num_units_in_tick, time_scale);
+	if (time_scale > 0 && num_units_in_tick > 0) {
+	  usingSource()->fFrameRate = fParsedFrameRate
+	    = time_scale/(DeltaTfiDivisor*num_units_in_tick);
+#ifdef DEBUG
+	  fprintf(stderr, "Set frame rate to %f fps\n", usingSource()->fFrameRate);
+#endif
+	} else {
+#ifdef DEBUG
+	  fprintf(stderr, "\tThis \"Video Parameter Set\" NAL unit contained no frame rate information, so we use a default frame rate of %f fps\n", usingSource()->fFrameRate);
+#endif
+	}
+      }
+    } else if (isSPS(nal_unit_type)) { // Sequence parameter set
+      // First, save a copy of this NAL unit, in case the downstream object wants to see it:
+      usingSource()->saveCopyOfSPS(fStartOfFrame + fOutputStartCodeSize, curFrameSize() - fOutputStartCodeSize);
+
+      if (fParsedFrameRate == 0.0) {
+	// We haven't yet parsed a frame rate from the stream.
+	// So parse this NAL unit to check whether frame rate information is present:
+	unsigned num_units_in_tick, time_scale;
+	analyze_seq_parameter_set_data(num_units_in_tick, time_scale);
+	if (time_scale > 0 && num_units_in_tick > 0) {
+	  usingSource()->fFrameRate = fParsedFrameRate
+	    = time_scale/(DeltaTfiDivisor*num_units_in_tick);
+#ifdef DEBUG
+	  fprintf(stderr, "Set frame rate to %f fps\n", usingSource()->fFrameRate);
+#endif
+	} else {
+#ifdef DEBUG
+	  fprintf(stderr, "\tThis \"Sequence Parameter Set\" NAL unit contained no frame rate information, so we use a default frame rate of %f fps\n", usingSource()->fFrameRate);
+#endif
+	}
+      }
+    } else if (isPPS(nal_unit_type)) { // Picture parameter set
+      // Save a copy of this NAL unit, in case the downstream object wants to see it:
+      usingSource()->saveCopyOfPPS(fStartOfFrame + fOutputStartCodeSize, curFrameSize() - fOutputStartCodeSize);
+    } else if (isSEI(nal_unit_type)) { // Supplemental enhancement information (SEI)
+      analyze_sei_data(nal_unit_type);
+      // Later, perhaps adjust "fPresentationTime" if we saw a "pic_timing" SEI payload??? #####
+    }
+
+    usingSource()->setPresentationTime();
+#ifdef DEBUG
+    unsigned long secs = (unsigned long)usingSource()->fPresentationTime.tv_sec;
+    unsigned uSecs = (unsigned)usingSource()->fPresentationTime.tv_usec;
+    fprintf(stderr, "\tPresentation time: %lu.%06u\n", secs, uSecs);
+#endif
+
+    // Now, check whether this NAL unit ends an 'access unit'.
+    // (RTP streamers need to know this in order to figure out whether or not to set the "M" bit.)
+    Boolean thisNALUnitEndsAccessUnit;
+    if (haveSeenEOF() || isEOF(nal_unit_type)) {
+      // There is no next NAL unit, so we assume that this one ends the current 'access unit':
+      thisNALUnitEndsAccessUnit = True;
+    } else if (usuallyBeginsAccessUnit(nal_unit_type)) {
+      // These NAL units usually *begin* an access unit, so assume that they don't end one here:
+      thisNALUnitEndsAccessUnit = False;
+    } else {
+      // We need to check the *next* NAL unit to figure out whether
+      // the current NAL unit ends an 'access unit':
+      u_int8_t firstBytesOfNextNALUnit[3];
+      testBytes(firstBytesOfNextNALUnit, 3);
+
+      u_int8_t const& next_nal_unit_type = fHNumber == 264
+	? (firstBytesOfNextNALUnit[0]&0x1F) : ((firstBytesOfNextNALUnit[0]&0x7E)>>1);
+      if (isVCL(next_nal_unit_type)) {
+	// The high-order bit of the byte after the "nal_unit_header" tells us whether it's
+	// the start of a new 'access unit' (and thus the current NAL unit ends an 'access unit'):
+	u_int8_t const byteAfter_nal_unit_header
+	  = fHNumber == 264 ? firstBytesOfNextNALUnit[1] : firstBytesOfNextNALUnit[2];
+	thisNALUnitEndsAccessUnit = (byteAfter_nal_unit_header&0x80) != 0;
+      } else if (usuallyBeginsAccessUnit(next_nal_unit_type)) {
+	// The next NAL unit's type is one that usually appears at the start of an 'access unit',
+	// so we assume that the current NAL unit ends an 'access unit':
+	thisNALUnitEndsAccessUnit = True;
+      } else {
+	// The next NAL unit definitely doesn't start a new 'access unit',
+	// which means that the current NAL unit doesn't end one:
+	thisNALUnitEndsAccessUnit = False;
+      }
+    }
+	
+    if (thisNALUnitEndsAccessUnit) {
+#ifdef DEBUG
+      fprintf(stderr, "*****This NAL unit ends the current access unit*****\n");
+#endif
+      usingSource()->fPictureEndMarker = True;
+      ++usingSource()->fPictureCount;
+
+      // Note that the presentation time for the next NAL unit will be different:
+      struct timeval& nextPT = usingSource()->fNextPresentationTime; // alias
+      nextPT = usingSource()->fPresentationTime;
+      double nextFraction = nextPT.tv_usec/1000000.0 + 1/usingSource()->fFrameRate;
+      unsigned nextSecsIncrement = (long)nextFraction;
+      nextPT.tv_sec += (long)nextSecsIncrement;
+      nextPT.tv_usec = (long)((nextFraction - nextSecsIncrement)*1000000);
+    }
+    setParseState();
+
+    return curFrameSize();
+  } catch (int /*e*/) {
+#ifdef DEBUG
+    fprintf(stderr, "H264or5VideoStreamParser::parse() EXCEPTION (This is normal behavior - *not* an error)\n");
+#endif
+    return 0;  // the parsing got interrupted
+  }
+}
+
+unsigned removeH264or5EmulationBytes(u_int8_t* to, unsigned toMaxSize,
+                                     u_int8_t const* from, unsigned fromSize) {
+  unsigned toSize = 0;
+  unsigned i = 0;
+  while (i < fromSize && toSize+1 < toMaxSize) {
+    if (i+2 < fromSize && from[i] == 0 && from[i+1] == 0 && from[i+2] == 3) {
+      to[toSize] = to[toSize+1] = 0;
+      toSize += 2;
+      i += 3;
+    } else {
+      to[toSize] = from[i];
+      toSize += 1;
+      i += 1;
+    }
+  }
+
+  return toSize;
+}
diff --git a/liveMedia/H265VideoFileServerMediaSubsession.cpp b/liveMedia/H265VideoFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..cc97da0
--- /dev/null
+++ b/liveMedia/H265VideoFileServerMediaSubsession.cpp
@@ -0,0 +1,121 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a H265 video file.
+// Implementation
+
+#include "H265VideoFileServerMediaSubsession.hh"
+#include "H265VideoRTPSink.hh"
+#include "ByteStreamFileSource.hh"
+#include "H265VideoStreamFramer.hh"
+
+H265VideoFileServerMediaSubsession*
+H265VideoFileServerMediaSubsession::createNew(UsageEnvironment& env,
+					      char const* fileName,
+					      Boolean reuseFirstSource) {
+  return new H265VideoFileServerMediaSubsession(env, fileName, reuseFirstSource);
+}
+
+H265VideoFileServerMediaSubsession::H265VideoFileServerMediaSubsession(UsageEnvironment& env,
+								       char const* fileName, Boolean reuseFirstSource)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource),
+    fAuxSDPLine(NULL), fDoneFlag(0), fDummyRTPSink(NULL) {
+}
+
+H265VideoFileServerMediaSubsession::~H265VideoFileServerMediaSubsession() {
+  delete[] fAuxSDPLine;
+}
+
+static void afterPlayingDummy(void* clientData) {
+  H265VideoFileServerMediaSubsession* subsess = (H265VideoFileServerMediaSubsession*)clientData;
+  subsess->afterPlayingDummy1();
+}
+
+void H265VideoFileServerMediaSubsession::afterPlayingDummy1() {
+  // Unschedule any pending 'checking' task:
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+  // Signal the event loop that we're done:
+  setDoneFlag();
+}
+
+static void checkForAuxSDPLine(void* clientData) {
+  H265VideoFileServerMediaSubsession* subsess = (H265VideoFileServerMediaSubsession*)clientData;
+  subsess->checkForAuxSDPLine1();
+}
+
+void H265VideoFileServerMediaSubsession::checkForAuxSDPLine1() {
+  nextTask() = NULL;
+
+  char const* dasl;
+  if (fAuxSDPLine != NULL) {
+    // Signal the event loop that we're done:
+    setDoneFlag();
+  } else if (fDummyRTPSink != NULL && (dasl = fDummyRTPSink->auxSDPLine()) != NULL) {
+    fAuxSDPLine = strDup(dasl);
+    fDummyRTPSink = NULL;
+
+    // Signal the event loop that we're done:
+    setDoneFlag();
+  } else if (!fDoneFlag) {
+    // try again after a brief delay:
+    int uSecsToDelay = 100000; // 100 ms
+    nextTask() = envir().taskScheduler().scheduleDelayedTask(uSecsToDelay,
+			      (TaskFunc*)checkForAuxSDPLine, this);
+  }
+}
+
+char const* H265VideoFileServerMediaSubsession::getAuxSDPLine(RTPSink* rtpSink, FramedSource* inputSource) {
+  if (fAuxSDPLine != NULL) return fAuxSDPLine; // it's already been set up (for a previous client)
+
+  if (fDummyRTPSink == NULL) { // we're not already setting it up for another, concurrent stream
+    // Note: For H265 video files, the 'config' information (used for several payload-format
+    // specific parameters in the SDP description) isn't known until we start reading the file.
+    // This means that "rtpSink"s "auxSDPLine()" will be NULL initially,
+    // and we need to start reading data from our file until this changes.
+    fDummyRTPSink = rtpSink;
+
+    // Start reading the file:
+    fDummyRTPSink->startPlaying(*inputSource, afterPlayingDummy, this);
+
+    // Check whether the sink's 'auxSDPLine()' is ready:
+    checkForAuxSDPLine(this);
+  }
+
+  envir().taskScheduler().doEventLoop(&fDoneFlag);
+
+  return fAuxSDPLine;
+}
+
+FramedSource* H265VideoFileServerMediaSubsession::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  estBitrate = 500; // kbps, estimate
+
+  // Create the video source:
+  ByteStreamFileSource* fileSource = ByteStreamFileSource::createNew(envir(), fFileName);
+  if (fileSource == NULL) return NULL;
+  fFileSize = fileSource->fileSize();
+
+  // Create a framer for the Video Elementary Stream:
+  return H265VideoStreamFramer::createNew(envir(), fileSource);
+}
+
+RTPSink* H265VideoFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock,
+		   unsigned char rtpPayloadTypeIfDynamic,
+		   FramedSource* /*inputSource*/) {
+  return H265VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+}
diff --git a/liveMedia/H265VideoFileSink.cpp b/liveMedia/H265VideoFileSink.cpp
new file mode 100644
index 0000000..20e28f6
--- /dev/null
+++ b/liveMedia/H265VideoFileSink.cpp
@@ -0,0 +1,63 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.265 Video File sinks
+// Implementation
+
+#include "H265VideoFileSink.hh"
+#include "OutputFile.hh"
+
+////////// H265VideoFileSink //////////
+
+H265VideoFileSink
+::H265VideoFileSink(UsageEnvironment& env, FILE* fid,
+		    char const* sPropVPSStr,
+                    char const* sPropSPSStr,
+                    char const* sPropPPSStr,
+		    unsigned bufferSize, char const* perFrameFileNamePrefix)
+  : H264or5VideoFileSink(env, fid, bufferSize, perFrameFileNamePrefix,
+			 sPropVPSStr, sPropSPSStr, sPropPPSStr) {
+}
+
+H265VideoFileSink::~H265VideoFileSink() {
+}
+
+H265VideoFileSink*
+H265VideoFileSink::createNew(UsageEnvironment& env, char const* fileName,
+			     char const* sPropVPSStr,
+			     char const* sPropSPSStr,
+			     char const* sPropPPSStr,
+			     unsigned bufferSize, Boolean oneFilePerFrame) {
+  do {
+    FILE* fid;
+    char const* perFrameFileNamePrefix;
+    if (oneFilePerFrame) {
+      // Create the fid for each frame
+      fid = NULL;
+      perFrameFileNamePrefix = fileName;
+    } else {
+      // Normal case: create the fid once
+      fid = OpenOutputFile(env, fileName);
+      if (fid == NULL) break;
+      perFrameFileNamePrefix = NULL;
+    }
+
+    return new H265VideoFileSink(env, fid, sPropVPSStr, sPropSPSStr, sPropPPSStr, bufferSize, perFrameFileNamePrefix);
+  } while (0);
+
+  return NULL;
+}
diff --git a/liveMedia/H265VideoRTPSink.cpp b/liveMedia/H265VideoRTPSink.cpp
new file mode 100644
index 0000000..7fa64f5
--- /dev/null
+++ b/liveMedia/H265VideoRTPSink.cpp
@@ -0,0 +1,182 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for H.265 video
+// Implementation
+
+#include "H265VideoRTPSink.hh"
+#include "H265VideoStreamFramer.hh"
+#include "Base64.hh"
+#include "BitVector.hh"
+#include "H264VideoRTPSource.hh" // for "parseSPropParameterSets()"
+
+////////// H265VideoRTPSink implementation //////////
+
+H265VideoRTPSink
+::H265VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+		   u_int8_t const* vps, unsigned vpsSize,
+		   u_int8_t const* sps, unsigned spsSize,
+		   u_int8_t const* pps, unsigned ppsSize)
+  : H264or5VideoRTPSink(265, env, RTPgs, rtpPayloadFormat,
+			vps, vpsSize, sps, spsSize, pps, ppsSize) {
+}
+
+H265VideoRTPSink::~H265VideoRTPSink() {
+}
+
+H265VideoRTPSink* H265VideoRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat) {
+  return new H265VideoRTPSink(env, RTPgs, rtpPayloadFormat);
+}
+
+H265VideoRTPSink* H265VideoRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+	    u_int8_t const* vps, unsigned vpsSize,
+	    u_int8_t const* sps, unsigned spsSize,
+	    u_int8_t const* pps, unsigned ppsSize) {
+  return new H265VideoRTPSink(env, RTPgs, rtpPayloadFormat,
+			      vps, vpsSize, sps, spsSize, pps, ppsSize);
+}
+
+H265VideoRTPSink* H265VideoRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+	    char const* sPropVPSStr, char const* sPropSPSStr, char const* sPropPPSStr) {
+  u_int8_t* vps = NULL; unsigned vpsSize = 0;
+  u_int8_t* sps = NULL; unsigned spsSize = 0;
+  u_int8_t* pps = NULL; unsigned ppsSize = 0;
+
+  // Parse each 'sProp' string, extracting and then classifying the NAL unit(s) from each one.
+  // We're 'liberal in what we accept'; it's OK if the strings don't contain the NAL unit type
+  // implied by their names (or if one or more of the strings encode multiple NAL units).
+  SPropRecord* sPropRecords[3];
+  unsigned numSPropRecords[3];
+  sPropRecords[0] = parseSPropParameterSets(sPropVPSStr, numSPropRecords[0]);
+  sPropRecords[1] = parseSPropParameterSets(sPropSPSStr, numSPropRecords[1]);
+  sPropRecords[2] = parseSPropParameterSets(sPropPPSStr, numSPropRecords[2]);
+
+  for (unsigned j = 0; j < 3; ++j) {
+    SPropRecord* records = sPropRecords[j];
+    unsigned numRecords = numSPropRecords[j];
+
+    for (unsigned i = 0; i < numRecords; ++i) {
+      if (records[i].sPropLength == 0) continue; // bad data
+      u_int8_t nal_unit_type = ((records[i].sPropBytes[0])&0x7E)>>1;
+      if (nal_unit_type == 32/*VPS*/) {
+	vps = records[i].sPropBytes;
+	vpsSize = records[i].sPropLength;
+      } else if (nal_unit_type == 33/*SPS*/) {
+	sps = records[i].sPropBytes;
+	spsSize = records[i].sPropLength;
+      } else if (nal_unit_type == 34/*PPS*/) {
+	pps = records[i].sPropBytes;
+	ppsSize = records[i].sPropLength;
+      }
+    }
+  }
+
+  H265VideoRTPSink* result = new H265VideoRTPSink(env, RTPgs, rtpPayloadFormat,
+						  vps, vpsSize, sps, spsSize, pps, ppsSize);
+  delete[] sPropRecords[0]; delete[] sPropRecords[1]; delete[] sPropRecords[2];
+
+  return result;
+}
+
+Boolean H265VideoRTPSink::sourceIsCompatibleWithUs(MediaSource& source) {
+  // Our source must be an appropriate framer:
+  return source.isH265VideoStreamFramer();
+}
+
+char const* H265VideoRTPSink::auxSDPLine() {
+  // Generate a new "a=fmtp:" line each time, using our VPS, SPS and PPS (if we have them),
+  // otherwise parameters from our framer source (in case they've changed since the last time that
+  // we were called):
+  H264or5VideoStreamFramer* framerSource = NULL;
+  u_int8_t* vps = fVPS; unsigned vpsSize = fVPSSize;
+  u_int8_t* sps = fSPS; unsigned spsSize = fSPSSize;
+  u_int8_t* pps = fPPS; unsigned ppsSize = fPPSSize;
+  if (vps == NULL || sps == NULL || pps == NULL) {
+    // We need to get VPS, SPS and PPS from our framer source:
+    if (fOurFragmenter == NULL) return NULL; // we don't yet have a fragmenter (and therefore not a source)
+    framerSource = (H264or5VideoStreamFramer*)(fOurFragmenter->inputSource());
+    if (framerSource == NULL) return NULL; // we don't yet have a source
+
+    framerSource->getVPSandSPSandPPS(vps, vpsSize, sps, spsSize, pps, ppsSize);
+    if (vps == NULL || sps == NULL || pps == NULL) {
+      return NULL; // our source isn't ready
+    }
+  }
+
+  // Set up the "a=fmtp:" SDP line for this stream.
+  u_int8_t* vpsWEB = new u_int8_t[vpsSize]; // "WEB" means "Without Emulation Bytes"
+  unsigned vpsWEBSize = removeH264or5EmulationBytes(vpsWEB, vpsSize, vps, vpsSize);
+  if (vpsWEBSize < 6/*'profile_tier_level' offset*/ + 12/*num 'profile_tier_level' bytes*/) {
+    // Bad VPS size => assume our source isn't ready
+    delete[] vpsWEB;
+    return NULL;
+  }
+  u_int8_t const* profileTierLevelHeaderBytes = &vpsWEB[6];
+  unsigned profileSpace  = profileTierLevelHeaderBytes[0]>>6; // general_profile_space
+  unsigned profileId = profileTierLevelHeaderBytes[0]&0x1F; // general_profile_idc
+  unsigned tierFlag = (profileTierLevelHeaderBytes[0]>>5)&0x1; // general_tier_flag
+  unsigned levelId = profileTierLevelHeaderBytes[11]; // general_level_idc
+  u_int8_t const* interop_constraints = &profileTierLevelHeaderBytes[5];
+  char interopConstraintsStr[100];
+  sprintf(interopConstraintsStr, "%02X%02X%02X%02X%02X%02X", 
+	  interop_constraints[0], interop_constraints[1], interop_constraints[2],
+	  interop_constraints[3], interop_constraints[4], interop_constraints[5]);
+  delete[] vpsWEB;
+
+  char* sprop_vps = base64Encode((char*)vps, vpsSize);
+  char* sprop_sps = base64Encode((char*)sps, spsSize);
+  char* sprop_pps = base64Encode((char*)pps, ppsSize);
+
+  char const* fmtpFmt =
+    "a=fmtp:%d profile-space=%u"
+    ";profile-id=%u"
+    ";tier-flag=%u"
+    ";level-id=%u"
+    ";interop-constraints=%s"
+    ";sprop-vps=%s"
+    ";sprop-sps=%s"
+    ";sprop-pps=%s\r\n";
+  unsigned fmtpFmtSize = strlen(fmtpFmt)
+    + 3 /* max num chars: rtpPayloadType */ + 20 /* max num chars: profile_space */
+    + 20 /* max num chars: profile_id */
+    + 20 /* max num chars: tier_flag */
+    + 20 /* max num chars: level_id */
+    + strlen(interopConstraintsStr)
+    + strlen(sprop_vps)
+    + strlen(sprop_sps)
+    + strlen(sprop_pps);
+  char* fmtp = new char[fmtpFmtSize];
+  sprintf(fmtp, fmtpFmt,
+          rtpPayloadType(), profileSpace,
+	  profileId,
+	  tierFlag,
+	  levelId,
+	  interopConstraintsStr,
+	  sprop_vps,
+	  sprop_sps,
+	  sprop_pps);
+
+  delete[] sprop_vps;
+  delete[] sprop_sps;
+  delete[] sprop_pps;
+
+  delete[] fFmtpSDPLine; fFmtpSDPLine = fmtp;
+  return fFmtpSDPLine;
+}
diff --git a/liveMedia/H265VideoRTPSource.cpp b/liveMedia/H265VideoRTPSource.cpp
new file mode 100644
index 0000000..a68c322
--- /dev/null
+++ b/liveMedia/H265VideoRTPSource.cpp
@@ -0,0 +1,218 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.265 Video RTP Sources
+// Implementation
+
+#include "H265VideoRTPSource.hh"
+
+////////// H265BufferedPacket and H265BufferedPacketFactory //////////
+
+class H265BufferedPacket: public BufferedPacket {
+public:
+  H265BufferedPacket(H265VideoRTPSource& ourSource);
+  virtual ~H265BufferedPacket();
+
+private: // redefined virtual functions
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+					 unsigned dataSize);
+private:
+  H265VideoRTPSource& fOurSource;
+};
+
+class H265BufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+
+///////// H265VideoRTPSource implementation ////////
+
+H265VideoRTPSource*
+H265VideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			      unsigned char rtpPayloadFormat,
+			      Boolean expectDONFields,		     
+			      unsigned rtpTimestampFrequency) {
+  return new H265VideoRTPSource(env, RTPgs, rtpPayloadFormat,
+				expectDONFields, rtpTimestampFrequency);
+}
+
+H265VideoRTPSource
+::H265VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     Boolean expectDONFields,		     
+		     unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency,
+			 new H265BufferedPacketFactory),
+    fExpectDONFields(expectDONFields),
+    fPreviousNALUnitDON(0), fCurrentNALUnitAbsDon((u_int64_t)(~0)) {
+}
+
+H265VideoRTPSource::~H265VideoRTPSource() {
+}
+
+Boolean H265VideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+  u_int16_t DONL = 0;
+  unsigned numBytesToSkip;
+
+  // Check the Payload Header's 'nal_unit_type' for special aggregation or fragmentation packets:
+  if (packetSize < 2) return False;
+  fCurPacketNALUnitType = (headerStart[0]&0x7E)>>1;
+  switch (fCurPacketNALUnitType) {
+  case 48: { // Aggregation Packet (AP)
+    // We skip over the 2-byte Payload Header, and the DONL header (if any).
+    if (fExpectDONFields) {
+      if (packetSize < 4) return False;
+      DONL = (headerStart[2]<<8)|headerStart[3];
+      numBytesToSkip = 4;
+    } else {
+      numBytesToSkip = 2;
+    }
+    break;
+  }
+  case 49: { // Fragmentation Unit (FU)
+    // This NALU begins with the 2-byte Payload Header, the 1-byte FU header, and (optionally)
+    // the 2-byte DONL header.
+    // If the start bit is set, we reconstruct the original NAL header at the end of these
+    // 3 (or 5) bytes, and skip over the first 1 (or 3) bytes.
+    if (packetSize < 3) return False;
+    u_int8_t startBit = headerStart[2]&0x80; // from the FU header
+    u_int8_t endBit = headerStart[2]&0x40; // from the FU header
+    if (startBit) {
+      fCurrentPacketBeginsFrame = True;
+
+      u_int8_t nal_unit_type = headerStart[2]&0x3F; // the last 6 bits of the FU header
+      u_int8_t newNALHeader[2];
+      newNALHeader[0] = (headerStart[0]&0x81)|(nal_unit_type<<1);
+      newNALHeader[1] = headerStart[1];
+
+      if (fExpectDONFields) {
+	if (packetSize < 5) return False;
+	DONL = (headerStart[3]<<8)|headerStart[4];
+	headerStart[3] = newNALHeader[0];
+	headerStart[4] = newNALHeader[1];
+	numBytesToSkip = 3;
+      } else {
+	headerStart[1] = newNALHeader[0];
+	headerStart[2] = newNALHeader[1];
+	numBytesToSkip = 1;
+      }
+    } else {
+      // The start bit is not set, so we skip over all headers:
+      fCurrentPacketBeginsFrame = False;
+      if (fExpectDONFields) {
+	if (packetSize < 5) return False;
+	DONL = (headerStart[3]<<8)|headerStart[4];
+	numBytesToSkip = 5;
+      } else {
+	numBytesToSkip = 3;
+      }
+    }
+    fCurrentPacketCompletesFrame = (endBit != 0);
+    break;
+  }
+  default: {
+    // This packet contains one complete NAL unit:
+    fCurrentPacketBeginsFrame = fCurrentPacketCompletesFrame = True;
+    numBytesToSkip = 0;
+    break;
+  }
+  }
+
+  computeAbsDonFromDON(DONL);
+  resultSpecialHeaderSize = numBytesToSkip;
+  return True;
+}
+
+char const* H265VideoRTPSource::MIMEtype() const {
+  return "video/H265";
+}
+
+void H265VideoRTPSource::computeAbsDonFromDON(u_int16_t DON) {
+  if (!fExpectDONFields) {
+    // Without DON fields in the input stream, we just increment our "AbsDon" count each time:
+    ++fCurrentNALUnitAbsDon;
+  } else {
+    if (fCurrentNALUnitAbsDon == (u_int64_t)(~0)) {
+      // This is the very first NAL unit, so "AbsDon" is just "DON":
+      fCurrentNALUnitAbsDon = (u_int64_t)DON;
+    } else {
+      // Use the previous NAL unit's DON and the current DON to compute "AbsDon":
+      //     AbsDon[n] = AbsDon[n-1] + (DON[n] - DON[n-1]) mod 2^16
+      short signedDiff16 = (short)(DON - fPreviousNALUnitDON);
+      int64_t signedDiff64 = (int64_t)signedDiff16;
+      fCurrentNALUnitAbsDon += signedDiff64;
+    }
+
+    fPreviousNALUnitDON = DON; // for next time
+  }
+}
+
+
+////////// H265BufferedPacket and H265BufferedPacketFactory implementation //////////
+
+H265BufferedPacket::H265BufferedPacket(H265VideoRTPSource& ourSource)
+  : fOurSource(ourSource) {
+}
+
+H265BufferedPacket::~H265BufferedPacket() {
+}
+
+unsigned H265BufferedPacket
+::nextEnclosedFrameSize(unsigned char*& framePtr, unsigned dataSize) {
+  unsigned resultNALUSize = 0; // if an error occurs
+
+  switch (fOurSource.fCurPacketNALUnitType) {
+  case 48: { // Aggregation Packet (AP)
+    if (useCount() > 0) {
+      // We're other than the first NAL unit inside this Aggregation Packet.
+      // Update our 'decoding order number':
+      u_int16_t DONL = 0;
+      if (fOurSource.fExpectDONFields) {
+	// There's a 1-byte DOND field next:
+	if (dataSize < 1) break;
+	u_int8_t DOND = framePtr[0];
+	DONL = fOurSource.fPreviousNALUnitDON + (u_int16_t)(DOND + 1);
+	++framePtr;
+	--dataSize;
+      }
+      fOurSource.computeAbsDonFromDON(DONL);
+    }
+
+    // The next 2 bytes are the NAL unit size:
+    if (dataSize < 2) break;
+    resultNALUSize = (framePtr[0]<<8)|framePtr[1];
+    framePtr += 2;
+    break;
+  }
+  default: {
+    // Common case: We use the entire packet data:
+    return dataSize;
+  }
+  }
+
+  return (resultNALUSize <= dataSize) ? resultNALUSize : dataSize;
+}
+
+BufferedPacket* H265BufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* ourSource) {
+  return new H265BufferedPacket((H265VideoRTPSource&)(*ourSource));
+}
diff --git a/liveMedia/H265VideoStreamDiscreteFramer.cpp b/liveMedia/H265VideoStreamDiscreteFramer.cpp
new file mode 100644
index 0000000..4bd1758
--- /dev/null
+++ b/liveMedia/H265VideoStreamDiscreteFramer.cpp
@@ -0,0 +1,46 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simplified version of "H265VideoStreamFramer" that takes only complete,
+// discrete frames (rather than an arbitrary byte stream) as input.
+// This avoids the parsing and data copying overhead of the full
+// "H265VideoStreamFramer".
+// Implementation
+
+#include "H265VideoStreamDiscreteFramer.hh"
+
+H265VideoStreamDiscreteFramer*
+H265VideoStreamDiscreteFramer
+::createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters) {
+  return new H265VideoStreamDiscreteFramer(env, inputSource,
+					   includeStartCodeInOutput, insertAccessUnitDelimiters);
+}
+
+H265VideoStreamDiscreteFramer
+::H265VideoStreamDiscreteFramer(UsageEnvironment& env, FramedSource* inputSource,
+				Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters)
+  : H264or5VideoStreamDiscreteFramer(265, env, inputSource,
+				     includeStartCodeInOutput, insertAccessUnitDelimiters) {
+}
+
+H265VideoStreamDiscreteFramer::~H265VideoStreamDiscreteFramer() {
+}
+
+Boolean H265VideoStreamDiscreteFramer::isH265VideoStreamFramer() const {
+  return True;
+}
diff --git a/liveMedia/H265VideoStreamFramer.cpp b/liveMedia/H265VideoStreamFramer.cpp
new file mode 100644
index 0000000..4fec6c1
--- /dev/null
+++ b/liveMedia/H265VideoStreamFramer.cpp
@@ -0,0 +1,42 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up a H.265 Video Elementary Stream into NAL units.
+// Implementation
+
+#include "H265VideoStreamFramer.hh"
+
+H265VideoStreamFramer* H265VideoStreamFramer
+::createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters) {
+  return new H265VideoStreamFramer(env, inputSource, True,
+				   includeStartCodeInOutput, insertAccessUnitDelimiters);
+}
+
+H265VideoStreamFramer
+::H265VideoStreamFramer(UsageEnvironment& env, FramedSource* inputSource, Boolean createParser,
+			Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters)
+  : H264or5VideoStreamFramer(265, env, inputSource, createParser,
+			     includeStartCodeInOutput, insertAccessUnitDelimiters) {
+}
+
+H265VideoStreamFramer::~H265VideoStreamFramer() {
+}
+
+Boolean H265VideoStreamFramer::isH265VideoStreamFramer() const {
+  return True;
+}
diff --git a/liveMedia/HLSSegmenter.cpp b/liveMedia/HLSSegmenter.cpp
new file mode 100644
index 0000000..b5107ae
--- /dev/null
+++ b/liveMedia/HLSSegmenter.cpp
@@ -0,0 +1,141 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A media sink that takes - as input - a MPEG Transport Stream, and outputs a series
+// of MPEG Transport Stream files, each representing a segment of the input stream,
+// suitable for HLS (Apple's "HTTP Live Streaming").
+// Implementation
+
+#include "HLSSegmenter.hh"
+#include "OutputFile.hh"
+#include "MPEG2TransportStreamMultiplexor.hh"
+
+#define TRANSPORT_PACKET_SIZE 188
+#define OUTPUT_FILE_BUFFER_SIZE (TRANSPORT_PACKET_SIZE*100)
+
+HLSSegmenter* HLSSegmenter
+::createNew(UsageEnvironment& env,
+	    unsigned segmentationDuration, char const* fileNamePrefix,
+	    onEndOfSegmentFunc* onEndOfSegmentFunc, void* onEndOfSegmentClientData) {
+  return new HLSSegmenter(env, segmentationDuration, fileNamePrefix,
+			  onEndOfSegmentFunc, onEndOfSegmentClientData);
+}
+
+HLSSegmenter::HLSSegmenter(UsageEnvironment& env,
+			   unsigned segmentationDuration, char const* fileNamePrefix,
+			   onEndOfSegmentFunc* onEndOfSegmentFunc, void* onEndOfSegmentClientData)
+  : MediaSink(env),
+    fSegmentationDuration(segmentationDuration), fFileNamePrefix(fileNamePrefix),
+    fOnEndOfSegmentFunc(onEndOfSegmentFunc), fOnEndOfSegmentClientData(onEndOfSegmentClientData),
+    fHaveConfiguredUpstreamSource(False), fCurrentSegmentCounter(1), fOutFid(NULL) {
+  // Allocate enough space for the segment file name:
+  fOutputSegmentFileName = new char[strlen(fileNamePrefix) + 20/*more than enough*/];
+
+  // Allocate the output file buffer size:
+  fOutputFileBuffer = new unsigned char[OUTPUT_FILE_BUFFER_SIZE];
+}
+HLSSegmenter::~HLSSegmenter() {
+  delete[] fOutputFileBuffer;
+  delete[] fOutputSegmentFileName;
+}
+
+void HLSSegmenter::ourEndOfSegmentHandler(void* clientData, double segmentDuration) {
+  ((HLSSegmenter*)clientData)->ourEndOfSegmentHandler(segmentDuration);
+}
+
+void HLSSegmenter::ourEndOfSegmentHandler(double segmentDuration) {
+  // Note the end of the current segment:
+  if (fOnEndOfSegmentFunc != NULL) {
+    (*fOnEndOfSegmentFunc)(fOnEndOfSegmentClientData, fOutputSegmentFileName, segmentDuration);
+  }
+
+  // Begin the next segment:
+  ++fCurrentSegmentCounter;
+  openNextOutputSegment();
+}
+
+Boolean HLSSegmenter::openNextOutputSegment() {
+  CloseOutputFile(fOutFid);
+
+  sprintf(fOutputSegmentFileName, "%s%03u.ts", fFileNamePrefix, fCurrentSegmentCounter);
+  fOutFid = OpenOutputFile(envir(), fOutputSegmentFileName);
+
+  return fOutFid != NULL;
+}
+
+void HLSSegmenter::afterGettingFrame(void* clientData, unsigned frameSize,
+				     unsigned numTruncatedBytes,
+				     struct timeval /*presentationTime*/,
+				     unsigned /*durationInMicroseconds*/) {
+  ((HLSSegmenter*)clientData)->afterGettingFrame(frameSize, numTruncatedBytes);
+}
+
+void HLSSegmenter::afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes) {
+  if (numTruncatedBytes > 0) { // Shouldn't happen
+    fprintf(stderr, "HLSSegmenter::afterGettingFrame(frameSize %d, numTruncatedBytes %d)\n", frameSize, numTruncatedBytes);
+  }
+
+  // Write the data to our output segment file:
+  fwrite(fOutputFileBuffer, 1, frameSize, fOutFid);
+
+  // Then try getting the next frame:
+  continuePlaying();
+}
+
+void HLSSegmenter::ourOnSourceClosure(void* clientData) {
+  ((HLSSegmenter*)clientData)->ourOnSourceClosure();
+}
+
+void HLSSegmenter::ourOnSourceClosure() {
+  // Note the end of the final segment (currently being written):
+  if (fOnEndOfSegmentFunc != NULL) {
+    // We know that the source is a "MPEG2TransportStreamMultiplexor":
+    MPEG2TransportStreamMultiplexor* multiplexorSource = (MPEG2TransportStreamMultiplexor*)fSource;
+    double segmentDuration = multiplexorSource->currentSegmentDuration();
+
+    (*fOnEndOfSegmentFunc)(fOnEndOfSegmentClientData, fOutputSegmentFileName, segmentDuration);
+  }
+
+  // Handle the closure for real:
+  onSourceClosure();
+}
+
+Boolean HLSSegmenter::sourceIsCompatibleWithUs(MediaSource& source) {
+  // Our source must be a Transport Stream Multiplexor:
+  return source.isMPEG2TransportStreamMultiplexor();
+}
+
+Boolean HLSSegmenter::continuePlaying() {
+  if (fSource == NULL) return False;
+  if (!fHaveConfiguredUpstreamSource) {
+    // We know that the source is a "MPEG2TransportStreamMultiplexor":
+    MPEG2TransportStreamMultiplexor* multiplexorSource = (MPEG2TransportStreamMultiplexor*)fSource;
+
+    // Tell our upstream multiplexor to call our 'end of segment handler' at the end of
+    // each timed segment:
+    multiplexorSource->setTimedSegmentation(fSegmentationDuration, ourEndOfSegmentHandler, this);
+
+    fHaveConfiguredUpstreamSource = True; // from now on
+  }
+  if (fOutFid == NULL && !openNextOutputSegment()) return False;
+
+  fSource->getNextFrame(fOutputFileBuffer, OUTPUT_FILE_BUFFER_SIZE,
+			afterGettingFrame, this,
+			ourOnSourceClosure, this);
+
+  return True;
+}
diff --git a/liveMedia/HMAC_SHA1.cpp b/liveMedia/HMAC_SHA1.cpp
new file mode 100644
index 0000000..a77dd47
--- /dev/null
+++ b/liveMedia/HMAC_SHA1.cpp
@@ -0,0 +1,64 @@
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// This code may not be copied or used in any form without permission from Live Networks, Inc.
+//
+// A function for computing the HMAC_SHA1 digest
+// Implementation
+
+#include "HMAC_SHA1.hh"
+
+#ifndef NO_OPENSSL
+#if defined(__APPLE__)
+#define COMMON_DIGEST_FOR_OPENSSL
+#include <CommonCrypto/CommonDigest.h>
+#endif
+#include <openssl/evp.h>
+
+////////// HMAC_SHA1 implementation //////////
+
+static void sha1(u_int8_t* resultDigest/*must be SHA1_DIGEST_LEN bytes in size*/,
+		 u_int8_t const* data1, unsigned data1Length,
+		 u_int8_t const* data2 = NULL, unsigned data2Length = 0) {
+  EVP_MD_CTX* ctx = EVP_MD_CTX_create();
+  EVP_DigestInit(ctx, EVP_sha1());
+  EVP_DigestUpdate(ctx, data1, data1Length);
+  if (data2 != NULL) {
+    EVP_DigestUpdate(ctx, data2, data2Length);
+  }
+  EVP_DigestFinal(ctx, resultDigest, NULL);
+}
+
+void HMAC_SHA1(u_int8_t const* key, unsigned keyLength, u_int8_t const* text, unsigned textLength,
+	       u_int8_t* resultDigest/*must be SHA1_DIGEST_LEN bytes in size*/) {
+  if (key == NULL || keyLength == 0 || text == NULL || textLength == 0 || resultDigest == NULL) {
+    return; // sanity check
+  }
+
+  // If the key is longer than the block size, hash it to make it smaller:
+  u_int8_t tmpDigest[SHA1_DIGEST_LEN];
+  if (keyLength > HMAC_BLOCK_SIZE) {
+    sha1(tmpDigest, key, keyLength);
+    key = tmpDigest;
+    keyLength = SHA1_DIGEST_LEN;
+  }
+  // Assert: keyLength <= HMAC_BLOCK_SIZE
+
+  // Initialize the inner and outer pads with the key:
+  u_int8_t ipad[HMAC_BLOCK_SIZE];
+  u_int8_t opad[HMAC_BLOCK_SIZE];
+  unsigned i;
+  for (i = 0; i < keyLength; ++i) {
+    ipad[i] = key[i]^0x36;
+    opad[i] = key[i]^0x5c;
+  }
+  for (; i < HMAC_BLOCK_SIZE; ++i) {
+    ipad[i] = 0x36;
+    opad[i] = 0x5c;
+  }
+  
+  // Perform the inner hash:
+  sha1(tmpDigest, ipad, HMAC_BLOCK_SIZE, text, textLength);
+
+  // Perform the outer hash:
+  sha1(resultDigest, opad, HMAC_BLOCK_SIZE, tmpDigest, SHA1_DIGEST_LEN);
+}
+#endif
diff --git a/liveMedia/InputFile.cpp b/liveMedia/InputFile.cpp
new file mode 100644
index 0000000..afed82b
--- /dev/null
+++ b/liveMedia/InputFile.cpp
@@ -0,0 +1,112 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Common routines for opening/closing named input files
+// Implementation
+
+#include "InputFile.hh"
+#include <string.h>
+
+FILE* OpenInputFile(UsageEnvironment& env, char const* fileName) {
+  FILE* fid;
+
+  // Check for a special case file name: "stdin"
+  if (strcmp(fileName, "stdin") == 0) {
+    fid = stdin;
+#if (defined(__WIN32__) || defined(_WIN32)) && !defined(_WIN32_WCE)
+    _setmode(_fileno(stdin), _O_BINARY); // convert to binary mode
+#endif
+  } else {
+    fid = fopen(fileName, "rb");
+    if (fid == NULL) {
+      env.setResultMsg("unable to open file \"",fileName, "\"");
+    }
+  }
+
+  return fid;
+}
+
+void CloseInputFile(FILE* fid) {
+  // Don't close 'stdin', in case we want to use it again later.
+  if (fid != NULL && fid != stdin) fclose(fid);
+}
+
+u_int64_t GetFileSize(char const* fileName, FILE* fid) {
+  u_int64_t fileSize = 0; // by default
+
+  if (fid != stdin) {
+#if !defined(_WIN32_WCE)
+    if (fileName == NULL) {
+#endif
+      if (fid != NULL && SeekFile64(fid, 0, SEEK_END) >= 0) {
+	fileSize = (u_int64_t)TellFile64(fid);
+	if (fileSize == (u_int64_t)-1) fileSize = 0; // TellFile64() failed
+	SeekFile64(fid, 0, SEEK_SET);
+      }
+#if !defined(_WIN32_WCE)
+    } else {
+      struct stat sb;
+      if (stat(fileName, &sb) == 0) {
+	fileSize = sb.st_size;
+      }
+    }
+#endif
+  }
+
+  return fileSize;
+}
+
+int64_t SeekFile64(FILE *fid, int64_t offset, int whence) {
+  if (fid == NULL) return -1;
+
+  clearerr(fid);
+  fflush(fid);
+#if (defined(__WIN32__) || defined(_WIN32)) && !defined(_WIN32_WCE)
+  return _lseeki64(_fileno(fid), offset, whence) == (int64_t)-1 ? -1 : 0;
+#else
+#if defined(_WIN32_WCE)
+  return fseek(fid, (long)(offset), whence);
+#else
+  return fseeko(fid, (off_t)(offset), whence);
+#endif
+#endif
+}
+
+int64_t TellFile64(FILE *fid) {
+  if (fid == NULL) return -1;
+
+  clearerr(fid);
+  fflush(fid);
+#if (defined(__WIN32__) || defined(_WIN32)) && !defined(_WIN32_WCE)
+  return _telli64(_fileno(fid));
+#else
+#if defined(_WIN32_WCE)
+  return ftell(fid);
+#else
+  return ftello(fid);
+#endif
+#endif
+}
+
+Boolean FileIsSeekable(FILE *fid) {
+  if (SeekFile64(fid, 1, SEEK_CUR) < 0) {
+    return False;
+  }
+
+  SeekFile64(fid, -1, SEEK_CUR); // seek back to where we were
+  return True;
+}
diff --git a/liveMedia/JPEG2000VideoRTPSink.cpp b/liveMedia/JPEG2000VideoRTPSink.cpp
new file mode 100644
index 0000000..d84b678
--- /dev/null
+++ b/liveMedia/JPEG2000VideoRTPSink.cpp
@@ -0,0 +1,78 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+
+#include "JPEG2000VideoRTPSink.hh"
+
+JPEG2000VideoRTPSink::JPEG2000VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs)
+  : VideoRTPSink(env, RTPgs, 98, 90000, "jpeg2000") {}
+
+JPEG2000VideoRTPSink::~JPEG2000VideoRTPSink() {}
+
+JPEG2000VideoRTPSink*
+JPEG2000VideoRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs) {
+  return new JPEG2000VideoRTPSink(env, RTPgs);
+}
+
+#define JPEG2000_PAYLOAD_HEADER_SIZE 8
+
+void JPEG2000VideoRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* frameStart,
+			 unsigned numBytesInFrame,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  // Fill in the Payload Header:
+  u_int8_t payloadHeader[JPEG2000_PAYLOAD_HEADER_SIZE];
+
+  // For "tp", assume for now that the payload is progressively scanned (i.e., tp = 0)
+  // For "MHF", assume that a whole main header is present (i.e., MHF = 3), *unless* we're
+  //   the second or later packet of a fragment, in which case we assume that it's not (i.e. MHF = 0)
+  // For "mh_id", set this to 0 (as specified in RFC 5371).
+  // For "T" (Tile field invalidation flag), set this to 0 (we don't set the "tile number" field).
+  payloadHeader[0] = fragmentationOffset > 0 ? 0x00 : 0x30;
+
+  // Set the "priority" field to 255, as specified in RFC 5371:
+  payloadHeader[1] = 255;
+
+  // Set the "tile number" field to 0:
+  payloadHeader[2] = payloadHeader[3] = 0;
+
+  // Set the "reserved" field to 0, as specified in RFC 5371:
+  payloadHeader[4] = 0;
+
+  // Set the "fragmentation offset" field to the value of our "fragmentationOffset" parameter:
+  payloadHeader[5] = (u_int8_t)(fragmentationOffset>>16);
+  payloadHeader[6] = (u_int8_t)(fragmentationOffset>>8);
+  payloadHeader[7] = (u_int8_t)(fragmentationOffset);
+
+  // Write the payload header to the outgoing packet:
+  setSpecialHeaderBytes(payloadHeader, sizeof payloadHeader);
+
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit
+    setMarkerBit();
+  }
+
+  // Also set the RTP timestamp:
+  setTimestamp(framePresentationTime);
+}
+
+unsigned JPEG2000VideoRTPSink::specialHeaderSize() const {
+  return JPEG2000_PAYLOAD_HEADER_SIZE;
+}
diff --git a/liveMedia/JPEG2000VideoRTPSource.cpp b/liveMedia/JPEG2000VideoRTPSource.cpp
new file mode 100644
index 0000000..cdfd0f1
--- /dev/null
+++ b/liveMedia/JPEG2000VideoRTPSource.cpp
@@ -0,0 +1,64 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+
+
+#include "JPEG2000VideoRTPSource.hh"
+
+JPEG2000VideoRTPSource*
+JPEG2000VideoRTPSource::createNew(UsageEnvironment& env,
+				  Groupsock* RTPgs,
+				  unsigned char rtpPayloadFormat,
+				  unsigned rtpTimestampFrequency,
+				  char const* sampling) {
+  return new JPEG2000VideoRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency, sampling);
+}
+
+JPEG2000VideoRTPSource
+::JPEG2000VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			 unsigned char rtpPayloadFormat, unsigned rtpTimestampFrequency,
+			 char const* sampling)
+  : MultiFramedRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency) {
+  fSampling = strDup(sampling);
+}
+
+JPEG2000VideoRTPSource::~JPEG2000VideoRTPSource() {
+  delete[] fSampling;
+}
+
+#define JPEG2000_PAYLOAD_HEADER_SIZE 8
+
+Boolean JPEG2000VideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  // There should be enough space for a payload header:
+  if (packetSize < JPEG2000_PAYLOAD_HEADER_SIZE) return False;
+
+  u_int32_t fragmentOffset = (headerStart[5]<<16)|(headerStart[6]<<8)|(headerStart[7]);
+  fCurrentPacketBeginsFrame = fragmentOffset == 0;
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
+
+  resultSpecialHeaderSize = JPEG2000_PAYLOAD_HEADER_SIZE;
+  return True;
+}
+
+char const* JPEG2000VideoRTPSource::MIMEtype() const {
+  return "video/JPEG2000";
+}
diff --git a/liveMedia/JPEGVideoRTPSink.cpp b/liveMedia/JPEGVideoRTPSink.cpp
new file mode 100644
index 0000000..ee5cc15
--- /dev/null
+++ b/liveMedia/JPEGVideoRTPSink.cpp
@@ -0,0 +1,145 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for JPEG video (RFC 2435)
+// Implementation
+
+#include "JPEGVideoRTPSink.hh"
+#include "JPEGVideoSource.hh"
+
+JPEGVideoRTPSink
+::JPEGVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs)
+  : VideoRTPSink(env, RTPgs, 26, 90000, "JPEG") {
+}
+
+JPEGVideoRTPSink::~JPEGVideoRTPSink() {
+}
+
+JPEGVideoRTPSink*
+JPEGVideoRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs) {
+  return new JPEGVideoRTPSink(env, RTPgs);
+}
+
+Boolean JPEGVideoRTPSink::sourceIsCompatibleWithUs(MediaSource& source) {
+  return source.isJPEGVideoSource();
+}
+
+Boolean JPEGVideoRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+				 unsigned /*numBytesInFrame*/) const {
+  // A packet can contain only one frame
+  return False;
+}
+
+void JPEGVideoRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* /*frameStart*/,
+			 unsigned /*numBytesInFrame*/,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  // Our source is known to be a JPEGVideoSource
+  JPEGVideoSource* source = (JPEGVideoSource*)fSource;
+  if (source == NULL) return; // sanity check
+
+  u_int8_t mainJPEGHeader[8]; // the special header
+  u_int8_t const type = source->type();
+
+  mainJPEGHeader[0] = 0; // Type-specific
+  mainJPEGHeader[1] = fragmentationOffset >> 16;
+  mainJPEGHeader[2] = fragmentationOffset >> 8;
+  mainJPEGHeader[3] = fragmentationOffset;
+  mainJPEGHeader[4] = type;
+  mainJPEGHeader[5] = source->qFactor();
+  mainJPEGHeader[6] = source->width();
+  mainJPEGHeader[7] = source->height();
+  setSpecialHeaderBytes(mainJPEGHeader, sizeof mainJPEGHeader);
+
+  unsigned restartMarkerHeaderSize = 0; // by default
+  if (type >= 64 && type <= 127) {
+    // There is also a Restart Marker Header:
+    restartMarkerHeaderSize = 4;
+    u_int16_t const restartInterval = source->restartInterval(); // should be non-zero
+
+    u_int8_t restartMarkerHeader[4];
+    restartMarkerHeader[0] = restartInterval>>8;
+    restartMarkerHeader[1] = restartInterval&0xFF;
+    restartMarkerHeader[2] = restartMarkerHeader[3] = 0xFF; // F=L=1; Restart Count = 0x3FFF
+
+    setSpecialHeaderBytes(restartMarkerHeader, restartMarkerHeaderSize,
+                          sizeof mainJPEGHeader/* start position */);
+  }
+
+  if (fragmentationOffset == 0 && source->qFactor() >= 128) {
+    // There is also a Quantization Header:
+    u_int8_t precision;
+    u_int16_t length;
+    u_int8_t const* quantizationTables
+      = source->quantizationTables(precision, length);
+
+    unsigned const quantizationHeaderSize = 4 + length;
+    u_int8_t* quantizationHeader = new u_int8_t[quantizationHeaderSize];
+
+    quantizationHeader[0] = 0; // MBZ
+    quantizationHeader[1] = precision;
+    quantizationHeader[2] = length >> 8;
+    quantizationHeader[3] = length&0xFF;
+    if (quantizationTables != NULL) { // sanity check
+      for (u_int16_t i = 0; i < length; ++i) {
+	quantizationHeader[4+i] = quantizationTables[i];
+      }
+    }
+
+    setSpecialHeaderBytes(quantizationHeader, quantizationHeaderSize,
+			  sizeof mainJPEGHeader + restartMarkerHeaderSize/* start position */);
+    delete[] quantizationHeader;
+  }
+
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit:
+    setMarkerBit();
+  }
+
+  // Also set the RTP timestamp:
+  setTimestamp(framePresentationTime);
+}
+
+
+unsigned JPEGVideoRTPSink::specialHeaderSize() const {
+  // Our source is known to be a JPEGVideoSource
+  JPEGVideoSource* source = (JPEGVideoSource*)fSource;
+  if (source == NULL) return 0; // sanity check
+
+  unsigned headerSize = 8; // by default
+
+  u_int8_t const type = source->type();
+  if (type >= 64 && type <= 127) {
+    // There is also a Restart Marker Header:
+    headerSize += 4;
+  }
+
+  if (curFragmentationOffset() == 0 && source->qFactor() >= 128) {
+    // There is also a Quantization Header:
+    u_int8_t dummy;
+    u_int16_t quantizationTablesSize;
+    (void)(source->quantizationTables(dummy, quantizationTablesSize));
+
+    headerSize += 4 + quantizationTablesSize;
+  }
+
+  return headerSize;
+}
diff --git a/liveMedia/JPEGVideoRTPSource.cpp b/liveMedia/JPEGVideoRTPSource.cpp
new file mode 100644
index 0000000..f71987e
--- /dev/null
+++ b/liveMedia/JPEGVideoRTPSource.cpp
@@ -0,0 +1,465 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// JPEG Video (RFC 2435) RTP Sources
+// Implementation
+
+#include "JPEGVideoRTPSource.hh"
+
+////////// JPEGBufferedPacket and JPEGBufferedPacketFactory //////////
+
+class JPEGBufferedPacket: public BufferedPacket {
+public:
+  Boolean completesFrame;
+
+private:
+  // Redefined virtual functions:
+  virtual void reset();
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+					 unsigned dataSize);
+};
+
+class JPEGBufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+
+////////// JPEGVideoRTPSource implementation //////////
+
+#define BYTE unsigned char
+#define WORD unsigned
+#define DWORD unsigned long
+
+JPEGVideoRTPSource*
+JPEGVideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			      unsigned char rtpPayloadFormat,
+			      unsigned rtpTimestampFrequency,
+			      unsigned defaultWidth, unsigned defaultHeight) {
+  return new JPEGVideoRTPSource(env, RTPgs, rtpPayloadFormat,
+				rtpTimestampFrequency, defaultWidth, defaultHeight);
+}
+
+JPEGVideoRTPSource::JPEGVideoRTPSource(UsageEnvironment& env,
+				       Groupsock* RTPgs,
+				       unsigned char rtpPayloadFormat,
+				       unsigned rtpTimestampFrequency,
+				       unsigned defaultWidth, unsigned defaultHeight)
+  : MultiFramedRTPSource(env, RTPgs,
+			 rtpPayloadFormat, rtpTimestampFrequency,
+			 new JPEGBufferedPacketFactory),
+    fDefaultWidth(defaultWidth), fDefaultHeight(defaultHeight) {
+}
+
+JPEGVideoRTPSource::~JPEGVideoRTPSource() {
+}
+
+enum {
+	MARKER_SOF0	= 0xc0,		// start-of-frame, baseline scan
+	MARKER_SOI	= 0xd8,		// start of image
+	MARKER_EOI	= 0xd9,		// end of image
+	MARKER_SOS	= 0xda,		// start of scan
+	MARKER_DRI	= 0xdd,		// restart interval
+	MARKER_DQT	= 0xdb,		// define quantization tables
+	MARKER_DHT  = 0xc4,		// huffman tables
+	MARKER_APP_FIRST	= 0xe0,
+	MARKER_APP_LAST		= 0xef,
+	MARKER_COMMENT		= 0xfe,
+};
+
+static unsigned char const lum_dc_codelens[] = {
+  0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
+};
+
+static unsigned char const lum_dc_symbols[] = {
+  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
+};
+
+static unsigned char const lum_ac_codelens[] = {
+  0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d,
+};
+
+static unsigned char const lum_ac_symbols[] = {
+  0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
+  0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
+  0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
+  0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
+  0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
+  0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
+  0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
+  0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
+  0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
+  0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
+  0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
+  0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
+  0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
+  0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+  0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
+  0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
+  0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
+  0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
+  0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
+  0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
+  0xf9, 0xfa,
+};
+
+static unsigned char const chm_dc_codelens[] = {
+  0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
+};
+
+static unsigned char const chm_dc_symbols[] = {
+  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
+};
+
+static unsigned char const chm_ac_codelens[] = {
+  0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77,
+};
+
+static unsigned char const chm_ac_symbols[] = {
+  0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
+  0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
+  0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
+  0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
+  0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
+  0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
+  0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
+  0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
+  0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
+  0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
+  0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
+  0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+  0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
+  0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
+  0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
+  0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
+  0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
+  0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
+  0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
+  0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
+  0xf9, 0xfa,
+};
+
+static void createHuffmanHeader(unsigned char*& p,
+				unsigned char const* codelens,
+				int ncodes,
+				unsigned char const* symbols,
+				int nsymbols,
+				int tableNo, int tableClass) {
+  *p++ = 0xff; *p++ = MARKER_DHT;
+  *p++ = 0;               /* length msb */
+  *p++ = 3 + ncodes + nsymbols; /* length lsb */
+  *p++ = (tableClass << 4) | tableNo;
+  memcpy(p, codelens, ncodes);
+  p += ncodes;
+  memcpy(p, symbols, nsymbols);
+  p += nsymbols;
+}
+
+static unsigned computeJPEGHeaderSize(unsigned qtlen, unsigned dri) {
+  unsigned qtlen_half = qtlen/2; // in case qtlen is odd; shouldn't happen
+  qtlen = qtlen_half*2;
+
+  unsigned numQtables = qtlen > 64 ? 2 : 1;
+  return 485 + numQtables*5 + qtlen + (dri > 0 ? 6 : 0);
+}
+
+static void createJPEGHeader(unsigned char* buf, unsigned type,
+			     unsigned w, unsigned h,
+			     unsigned char const* qtables, unsigned qtlen,
+			     unsigned dri) {
+  unsigned char *ptr = buf;
+  unsigned numQtables = qtlen > 64 ? 2 : 1;
+
+  // MARKER_SOI:
+  *ptr++ = 0xFF; *ptr++ = MARKER_SOI;
+
+  // MARKER_APP_FIRST:
+  *ptr++ = 0xFF; *ptr++ = MARKER_APP_FIRST;
+  *ptr++ = 0x00; *ptr++ = 0x10; // size of chunk
+  *ptr++ = 'J'; *ptr++ = 'F'; *ptr++ = 'I'; *ptr++ = 'F'; *ptr++ = 0x00;
+  *ptr++ = 0x01; *ptr++ = 0x01; // JFIF format version (1.1)
+  *ptr++ = 0x00; // no units
+  *ptr++ = 0x00; *ptr++ = 0x01; // Horizontal pixel aspect ratio
+  *ptr++ = 0x00; *ptr++ = 0x01; // Vertical pixel aspect ratio
+  *ptr++ = 0x00; *ptr++ = 0x00; // no thumbnail
+
+  // MARKER_DRI:
+  if (dri > 0) {
+    *ptr++ = 0xFF; *ptr++ = MARKER_DRI;
+    *ptr++ = 0x00; *ptr++ = 0x04; // size of chunk
+    *ptr++ = (BYTE)(dri >> 8); *ptr++ = (BYTE)(dri); // restart interval
+  }
+
+  // MARKER_DQT (luma):
+  unsigned tableSize = numQtables == 1 ? qtlen : qtlen/2;
+  *ptr++ = 0xFF; *ptr++ = MARKER_DQT;
+  *ptr++ = 0x00; *ptr++ = tableSize + 3; // size of chunk
+  *ptr++ = 0x00; // precision(0), table id(0)
+  memcpy(ptr, qtables, tableSize);
+  qtables += tableSize;
+  ptr += tableSize;
+
+  if (numQtables > 1) {
+    unsigned tableSize = qtlen - qtlen/2;
+    // MARKER_DQT (chroma):
+    *ptr++ = 0xFF; *ptr++ = MARKER_DQT;
+    *ptr++ = 0x00; *ptr++ = tableSize + 3; // size of chunk
+    *ptr++ = 0x01; // precision(0), table id(1)
+    memcpy(ptr, qtables, tableSize);
+    qtables += tableSize;
+    ptr += tableSize;
+  }
+
+  // MARKER_SOF0:
+  *ptr++ = 0xFF; *ptr++ = MARKER_SOF0;
+  *ptr++ = 0x00; *ptr++ = 0x11; // size of chunk
+  *ptr++ = 0x08; // sample precision
+  *ptr++ = (BYTE)(h >> 8);
+  *ptr++ = (BYTE)(h); // number of lines (must be a multiple of 8)
+  *ptr++ = (BYTE)(w >> 8);
+  *ptr++ = (BYTE)(w); // number of columns (must be a multiple of 8)
+  *ptr++ = 0x03; // number of components
+  *ptr++ = 0x01; // id of component
+  *ptr++ = type ? 0x22 : 0x21; // sampling ratio (h,v)
+  *ptr++ = 0x00; // quant table id
+  *ptr++ = 0x02; // id of component
+  *ptr++ = 0x11; // sampling ratio (h,v)
+  *ptr++ = numQtables == 1 ? 0x00 : 0x01; // quant table id
+  *ptr++ = 0x03; // id of component
+  *ptr++ = 0x11; // sampling ratio (h,v)
+  *ptr++ = numQtables == 1 ? 0x00 : 0x01; // quant table id
+
+  createHuffmanHeader(ptr, lum_dc_codelens, sizeof lum_dc_codelens,
+		      lum_dc_symbols, sizeof lum_dc_symbols, 0, 0);
+  createHuffmanHeader(ptr, lum_ac_codelens, sizeof lum_ac_codelens,
+		      lum_ac_symbols, sizeof lum_ac_symbols, 0, 1);
+  createHuffmanHeader(ptr, chm_dc_codelens, sizeof chm_dc_codelens,
+		      chm_dc_symbols, sizeof chm_dc_symbols, 1, 0);
+  createHuffmanHeader(ptr, chm_ac_codelens, sizeof chm_ac_codelens,
+		      chm_ac_symbols, sizeof chm_ac_symbols, 1, 1);
+
+  // MARKER_SOS:
+  *ptr++ = 0xFF;  *ptr++ = MARKER_SOS;
+  *ptr++ = 0x00; *ptr++ = 0x0C; // size of chunk
+  *ptr++ = 0x03; // number of components
+  *ptr++ = 0x01; // id of component
+  *ptr++ = 0x00; // huffman table id (DC, AC)
+  *ptr++ = 0x02; // id of component
+  *ptr++ = 0x11; // huffman table id (DC, AC)
+  *ptr++ = 0x03; // id of component
+  *ptr++ = 0x11; // huffman table id (DC, AC)
+  *ptr++ = 0x00; // start of spectral
+  *ptr++ = 0x3F; // end of spectral
+  *ptr++ = 0x00; // successive approximation bit position (high, low)
+}
+
+// The default 'luma' and 'chroma' quantizer tables, in zigzag order:
+static unsigned char const defaultQuantizers[128] = {
+  // luma table:
+  16, 11, 12, 14, 12, 10, 16, 14,
+  13, 14, 18, 17, 16, 19, 24, 40,
+  26, 24, 22, 22, 24, 49, 35, 37,
+  29, 40, 58, 51, 61, 60, 57, 51,
+  56, 55, 64, 72, 92, 78, 64, 68,
+  87, 69, 55, 56, 80, 109, 81, 87,
+  95, 98, 103, 104, 103, 62, 77, 113,
+  121, 112, 100, 120, 92, 101, 103, 99,
+  // chroma table:
+  17, 18, 18, 24, 21, 24, 47, 26,
+  26, 47, 99, 66, 56, 66, 99, 99,
+  99, 99, 99, 99, 99, 99, 99, 99,
+  99, 99, 99, 99, 99, 99, 99, 99,
+  99, 99, 99, 99, 99, 99, 99, 99,
+  99, 99, 99, 99, 99, 99, 99, 99,
+  99, 99, 99, 99, 99, 99, 99, 99,
+  99, 99, 99, 99, 99, 99, 99, 99
+};
+
+static void makeDefaultQtables(unsigned char* resultTables, unsigned Q) {
+  int factor = Q;
+  int q;
+
+  if (Q < 1) factor = 1;
+  else if (Q > 99) factor = 99;
+
+  if (Q < 50) {
+    q = 5000 / factor;
+  } else {
+    q = 200 - factor*2;
+  }
+
+  for (int i = 0; i < 128; ++i) {
+    int newVal = (defaultQuantizers[i]*q + 50)/100;
+    if (newVal < 1) newVal = 1;
+    else if (newVal > 255) newVal = 255;
+    resultTables[i] = newVal;
+  }
+}
+
+Boolean JPEGVideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  unsigned char* qtables = NULL;
+  unsigned qtlen = 0;
+  unsigned dri = 0;
+
+  // There's at least 8-byte video-specific header
+  /*
+0                   1                   2                   3
+0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+| Type-specific |              Fragment Offset                  |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|      Type     |       Q       |     Width     |     Height    |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+  */
+  if (packetSize < 8) return False;
+
+  resultSpecialHeaderSize = 8;
+
+  unsigned Offset = (unsigned)((DWORD)headerStart[1] << 16 | (DWORD)headerStart[2] << 8 | (DWORD)headerStart[3]);
+  unsigned Type = (unsigned)headerStart[4];
+  unsigned type = Type & 1;
+  unsigned Q = (unsigned)headerStart[5];
+  unsigned width = (unsigned)headerStart[6] * 8;
+  unsigned height = (unsigned)headerStart[7] * 8;
+  if ((width == 0 || height == 0) && fDefaultWidth != 0 && fDefaultHeight != 0) {
+    // Use the default width and height parameters instead:
+    width = fDefaultWidth;
+    height = fDefaultHeight;
+  }
+  if (width == 0) width = 256*8; // special case
+  if (height == 0) height = 256*8; // special case
+
+  if (Type > 63) {
+    // Restart Marker header present
+    /*
+0                   1                   2                   3
+0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|       Restart Interval        |F|L|       Restart Count       |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    */
+    if (packetSize < resultSpecialHeaderSize + 4) return False;
+
+    unsigned RestartInterval = (unsigned)((WORD)headerStart[resultSpecialHeaderSize] << 8 | (WORD)headerStart[resultSpecialHeaderSize + 1]);
+    dri = RestartInterval;
+    resultSpecialHeaderSize += 4;
+  }
+
+  if (Offset == 0) {
+    if (Q > 127) {
+      // Quantization Table header present
+/*
+0                   1                   2                   3
+0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|      MBZ      |   Precision   |             Length            |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|                    Quantization Table Data                    |
+|                              ...                              |
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+*/
+      if (packetSize < resultSpecialHeaderSize + 4) return False;
+
+      unsigned MBZ = (unsigned)headerStart[resultSpecialHeaderSize];
+      if (MBZ == 0) {
+	// unsigned Precision = (unsigned)headerStart[resultSpecialHeaderSize + 1];
+	unsigned Length = (unsigned)((WORD)headerStart[resultSpecialHeaderSize + 2] << 8 | (WORD)headerStart[resultSpecialHeaderSize + 3]);
+
+	//ASSERT(Length == 128);
+
+	resultSpecialHeaderSize += 4;
+
+	if (packetSize < resultSpecialHeaderSize + Length) return False;
+
+	qtlen = Length;
+	qtables = &headerStart[resultSpecialHeaderSize];
+
+	resultSpecialHeaderSize += Length;
+      }
+    }
+  }
+
+  // If this is the first (or only) fragment of a JPEG frame, then we need
+  // to synthesize a JPEG header, and prepend it to the incoming data.
+  // Hack: We can do this because we allowed space for it in
+  // our special "JPEGBufferedPacket" subclass.  We also adjust
+  // "resultSpecialHeaderSize" to compensate for this, by subtracting
+  // the size of the synthesized header.  Note that this will cause
+  // "resultSpecialHeaderSize" to become negative, but the code that called
+  // us (in "MultiFramedRTPSource") will handle this properly.
+  if (Offset == 0) {
+    unsigned char newQtables[128];
+    if (qtlen == 0) {
+      // A quantization table was not present in the RTP JPEG header,
+      // so use the default tables, scaled according to the "Q" factor:
+      makeDefaultQtables(newQtables, Q);
+      qtables = newQtables;
+      qtlen = sizeof newQtables;
+    }
+
+    unsigned hdrlen = computeJPEGHeaderSize(qtlen, dri);
+    resultSpecialHeaderSize -= hdrlen; // goes negative
+    headerStart += (int)resultSpecialHeaderSize; // goes backward
+    createJPEGHeader(headerStart, type, width, height, qtables, qtlen, dri);
+  }
+
+  fCurrentPacketBeginsFrame = (Offset == 0);
+
+  // The RTP "M" (marker) bit indicates the last fragment of a frame:
+  ((JPEGBufferedPacket*)packet)->completesFrame
+   = fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
+
+  return True;
+}
+
+char const* JPEGVideoRTPSource::MIMEtype() const {
+  return "video/JPEG";
+}
+
+////////// JPEGBufferedPacket and JPEGBufferedPacketFactory implementation
+
+void JPEGBufferedPacket::reset() {
+  BufferedPacket::reset();
+
+  // Move our "fHead" and "fTail" forward, to allow space for a synthesized
+  // JPEG header to precede the RTP data that comes in over the network.
+  unsigned offset = MAX_JPEG_HEADER_SIZE;
+  if (offset > fPacketSize) offset = fPacketSize; // shouldn't happen
+  fHead = fTail = offset;
+}
+
+unsigned JPEGBufferedPacket
+::nextEnclosedFrameSize(unsigned char*& framePtr, unsigned dataSize) {
+  // Normally, the enclosed frame size is just "dataSize".  If, however,
+  // the frame does not end with the "EOI" marker, then add this now:
+  if (completesFrame && dataSize >= 2 &&
+      !(framePtr[dataSize-2] == 0xFF && framePtr[dataSize-1] == MARKER_EOI)) {
+    framePtr[dataSize++] = 0xFF;
+    framePtr[dataSize++] = MARKER_EOI;
+  }
+  return dataSize;
+}
+
+BufferedPacket* JPEGBufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* /*ourSource*/) {
+  return new JPEGBufferedPacket;
+}
diff --git a/liveMedia/JPEGVideoSource.cpp b/liveMedia/JPEGVideoSource.cpp
new file mode 100644
index 0000000..f3344ab
--- /dev/null
+++ b/liveMedia/JPEGVideoSource.cpp
@@ -0,0 +1,45 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// JPEG video sources
+// Implementation
+
+#include "JPEGVideoSource.hh"
+
+JPEGVideoSource::JPEGVideoSource(UsageEnvironment& env)
+  : FramedSource(env) {
+}
+
+JPEGVideoSource::~JPEGVideoSource() {
+}
+
+u_int8_t const* JPEGVideoSource::quantizationTables(u_int8_t& precision,
+						    u_int16_t& length) {
+  // Default implementation
+  precision = 0;
+  length = 0;
+  return NULL;
+}
+
+u_int16_t JPEGVideoSource::restartInterval() {
+  // Default implementation
+  return 0;
+}
+
+Boolean JPEGVideoSource::isJPEGVideoSource() const {
+  return True;
+}
diff --git a/liveMedia/Locale.cpp b/liveMedia/Locale.cpp
new file mode 100644
index 0000000..a6bd6aa
--- /dev/null
+++ b/liveMedia/Locale.cpp
@@ -0,0 +1,60 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Support for temporarily setting the locale (e.g., to "C" or "POSIX") for (e.g.) parsing or printing
+// floating-point numbers in protocol headers, or calling toupper()/tolower() on human-input strings.
+// Implementation
+
+#include "Locale.hh"
+#include <strDup.hh>
+
+Locale::Locale(char const* newLocale, LocaleCategory category) {
+#ifndef LOCALE_NOT_USED
+#ifndef NEWLOCALE_NOT_USED
+  int categoryMask;
+  switch (category) {
+    case All: { categoryMask = LC_ALL_MASK; break; }
+    case Numeric: { categoryMask = LC_NUMERIC_MASK; break; }
+  }
+  fLocale = newlocale(categoryMask, newLocale, NULL);
+  fPrevLocale = uselocale(fLocale);
+#else
+  switch (category) {
+    case All: { fCategoryNum = LC_ALL; break; }
+    case Numeric: { fCategoryNum = LC_NUMERIC; break; }
+  }
+  fPrevLocale = strDup(setlocale(fCategoryNum, NULL));
+  setlocale(fCategoryNum, newLocale);
+#endif
+#endif
+}
+
+Locale::~Locale() {
+#ifndef LOCALE_NOT_USED
+#ifndef NEWLOCALE_NOT_USED
+  if (fLocale != (locale_t)0) {
+    uselocale(fPrevLocale);
+    freelocale(fLocale);
+  }
+#else
+  if (fPrevLocale != NULL) {
+    setlocale(fCategoryNum, fPrevLocale);
+    delete[] fPrevLocale;
+  }
+#endif
+#endif
+}
diff --git a/liveMedia/MIKEY.cpp b/liveMedia/MIKEY.cpp
new file mode 100644
index 0000000..d2d6343
--- /dev/null
+++ b/liveMedia/MIKEY.cpp
@@ -0,0 +1,598 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A data structure that implements a MIKEY message (RFC 3830)
+// Implementation
+
+#include "MIKEY.hh"
+#include <GroupsockHelper.hh> // for our_random32()
+
+////////// MIKEYPayload definition /////////
+
+class MIKEYPayload {
+public:
+  MIKEYPayload(MIKEYState& ourMIKEYState, u_int8_t payloadType);
+      // create with default values
+  MIKEYPayload(MIKEYState& ourMIKEYState, u_int8_t payloadType,
+	       u_int8_t const* data, unsigned dataSize);
+      // create as a copy of existing values
+
+  virtual ~MIKEYPayload();
+
+  u_int8_t const* data() const { return fData; }
+  unsigned dataSize() const { return fDataSize; }
+
+  MIKEYPayload* next() const { return fNext; }
+  void setNextPayload(MIKEYPayload* nextPayload);
+
+private:
+  MIKEYState& fOurMIKEYState;
+  u_int8_t fPayloadType;
+  u_int8_t* fData;
+  unsigned fDataSize;
+  MIKEYPayload* fNext;
+};
+
+
+////////// MIKEYState implementation //////////
+
+enum MIKEYPayloadType {
+		       KEMAC = 1,
+		       PKE = 2,
+		       DH = 3,
+		       SIGN = 4,
+		       T = 5,
+		       ID = 6,
+		       CERT = 7,
+		       CHASH = 8,
+		       V = 9,
+		       SP = 10,
+		       RAND = 11,
+		       ERR = 12,
+		       KEY_DATA = 13,
+		       HDR = 255
+};
+
+MIKEYState::MIKEYState()
+  : // Set default encryption/authentication parameters:
+  fEncryptSRTP(True),
+  fEncryptSRTCP(True),
+  fMKI(our_random32()),
+  fUseAuthentication(True),
+
+  fHeaderPayload(NULL), fTailPayload(NULL), fTotalPayloadByteCount(0) {
+  // Fill in our 'key data' (30 bytes) with (pseudo-)random bits:
+  u_int8_t* p = &fKeyData[0];
+  u_int32_t random32;
+  random32 = our_random32();
+  *p++ = (random32>>24); *p++ = (random32>>16); *p++ = (random32>>8); *p++ = random32; // 0-3
+  random32 = our_random32();
+  *p++ = (random32>>24); *p++ = (random32>>16); *p++ = (random32>>8); *p++ = random32; // 4-7
+  random32 = our_random32();
+  *p++ = (random32>>24); *p++ = (random32>>16); *p++ = (random32>>8); *p++ = random32; // 8-11
+  random32 = our_random32();
+  *p++ = (random32>>24); *p++ = (random32>>16); *p++ = (random32>>8); *p++ = random32; // 12-15
+  random32 = our_random32();
+  *p++ = (random32>>24); *p++ = (random32>>16); *p++ = (random32>>8); *p++ = random32; // 16-19
+  random32 = our_random32();
+  *p++ = (random32>>24); *p++ = (random32>>16); *p++ = (random32>>8); *p++ = random32; // 20-23
+  random32 = our_random32();
+  *p++ = (random32>>24); *p++ = (random32>>16); *p++ = (random32>>8); *p++ = random32; // 24-27
+  random32 = our_random32();
+  *p++ = (random32>>24); *p++ = (random32>>16); // 28-29
+
+  addNewPayload(new MIKEYPayload(*this, HDR));
+  addNewPayload(new MIKEYPayload(*this, T));
+  addNewPayload(new MIKEYPayload(*this, RAND));
+  addNewPayload(new MIKEYPayload(*this, SP));
+  addNewPayload(new MIKEYPayload(*this, KEMAC));
+}
+
+MIKEYState::~MIKEYState() {
+  delete fHeaderPayload; // which will delete all the other payloads as well
+}
+
+MIKEYState* MIKEYState::createNew(u_int8_t* messageToParse, unsigned messageSize) {
+  Boolean parsedOK;
+  MIKEYState* newMIKEYState = new MIKEYState(messageToParse, messageSize, parsedOK);
+
+  if (!parsedOK) {
+    delete newMIKEYState;
+    newMIKEYState = NULL;
+  }
+
+  delete[] messageToParse;
+  return newMIKEYState;
+}
+
+u_int8_t* MIKEYState::generateMessage(unsigned& messageSize) const {
+  if (fTotalPayloadByteCount == 0) return NULL;
+
+  // ASSERT: fTotalPayloadByteCount == the sum of all of the payloads' "fDataSize"s
+  messageSize = fTotalPayloadByteCount;
+  u_int8_t* resultMessage = new u_int8_t[messageSize];
+  u_int8_t* p = resultMessage;
+  
+  for (MIKEYPayload* payload = fHeaderPayload; payload != NULL; payload = payload->next()) {
+    if (payload->data() == NULL) continue;
+
+    memcpy(p, payload->data(), payload->dataSize());
+    p += payload->dataSize();
+  }
+
+  return resultMessage;
+}
+
+MIKEYState::MIKEYState(u_int8_t const* messageToParse, unsigned messageSize, Boolean& parsedOK)
+  : // Set encryption/authentication parameters to default values (that may be overwritten
+    // later as we parse the message):
+  fEncryptSRTP(False),
+  fEncryptSRTCP(False),
+  fUseAuthentication(False),
+
+  fHeaderPayload(NULL), fTailPayload(NULL), fTotalPayloadByteCount(0) {
+  parsedOK = False; // unless we learn otherwise
+
+  // Begin by parsing a HDR payload:
+  u_int8_t const* ptr = messageToParse;
+  u_int8_t const* const endPtr = messageToParse + messageSize;
+  u_int8_t nextPayloadType;
+  
+  if (!parseHDRPayload(ptr, endPtr, nextPayloadType)) return;
+
+  // Then parse each subsequent payload that we see:
+  while (nextPayloadType != 0) {
+    if (!parseNonHDRPayload(ptr, endPtr, nextPayloadType)) return;
+  }
+
+  // We succeeded in parsing all the data:
+  parsedOK = True;
+}
+
+void MIKEYState::addNewPayload(MIKEYPayload* newPayload) {
+  if (fTailPayload == NULL) {
+    fHeaderPayload = newPayload;
+  } else {
+    fTailPayload->setNextPayload(newPayload);
+  }
+  fTailPayload = newPayload;
+
+  fTotalPayloadByteCount += newPayload->dataSize();
+}
+
+#define testSize(n) if (ptr + (n) > endPtr) break
+
+Boolean MIKEYState
+::parseHDRPayload(u_int8_t const*& ptr, u_int8_t const* endPtr, u_int8_t& nextPayloadType) {
+  do {
+    testSize(10);
+    nextPayloadType = ptr[2];
+    u_int8_t numCryptoSessions = ptr[8];
+
+    unsigned payloadSize = 10 + numCryptoSessions*(1+4+4);
+    testSize(payloadSize);
+
+    addNewPayload(new MIKEYPayload(*this, HDR, ptr, payloadSize));
+    ptr += payloadSize;
+    
+    return True;
+  } while (0);
+
+  // An error occurred:
+  return False;
+}
+
+static u_int32_t get4Bytes(u_int8_t const*& ptr) {
+  u_int32_t result = (ptr[0]<<24)|(ptr[1]<<16)|(ptr[2]<<8)|ptr[3];
+  ptr += 4;
+  return result;
+}
+
+static u_int16_t get2Bytes(u_int8_t const*& ptr) {
+  u_int16_t result = (ptr[0]<<8)|ptr[1];
+  ptr += 2;
+  return result;
+}
+
+Boolean MIKEYState
+::parseNonHDRPayload(u_int8_t const*& ptr, u_int8_t const* endPtr, u_int8_t& nextPayloadType) {
+  do {
+    Boolean parseSucceeded = False; // initially
+    u_int8_t const* payloadStart = ptr;
+    unsigned payloadSize = 0;
+
+    testSize(1);
+    u_int8_t ourPayloadType = nextPayloadType;
+    nextPayloadType = *ptr++;
+
+    // The parsing depends on "ourPayloadType":
+    switch (ourPayloadType) {
+      case T: { // RFC 3830, section 6.6
+	testSize(1);
+	u_int8_t TS_type = *ptr++;
+	unsigned TS_value_len = 0;
+	switch (TS_type) {
+	  case 0: // NTP-UTC
+	  case 1: { // NTP
+	    TS_value_len = 8;
+	    break;
+	  }
+	  case 2: { // COUNTER
+	    TS_value_len = 4;
+	    break;
+	  }
+	}
+	if (TS_value_len == 0) break; // unknown TS_type
+
+	testSize(TS_value_len);
+	payloadSize = 2 + TS_value_len;
+	parseSucceeded = True;
+	break;
+      }
+      case RAND: { // RFC 3830, section 6.11
+	testSize(1);
+        u_int8_t RAND_len = *ptr++;
+
+	testSize(RAND_len);
+	payloadSize = 2 + RAND_len;
+	parseSucceeded = True;
+	break;
+      }
+      case SP: { // RFC 3830, section 6.10
+	testSize(4);
+	++ptr; // skip over "Policy no"
+	u_int8_t protType = *ptr++;
+	if (protType != 0/*SRTP*/) break; // unsupported protocol type
+
+	u_int16_t policyParam_len = get2Bytes(ptr);
+
+	testSize(policyParam_len);
+	payloadSize = 5 + policyParam_len;
+	u_int8_t const* payloadEndPtr = payloadStart + payloadSize;
+	// Look through the "Policy param" section, making sure that:
+	//   - each of the "length" fields make sense
+	//   - for "type"s that we understand, the values make sense
+	Boolean parsedPolicyParamSection = False;
+	while (1) {
+	  testSize(2);
+	  u_int8_t ppType = *ptr++;
+	  u_int8_t ppLength = *ptr++;
+
+	  testSize(ppLength);
+	  if (ptr+ppLength > payloadEndPtr) break; // bad "length"s - too big for the payload
+
+	  // Check types that we understand:
+	  Boolean policyIsOK = False; // until we learn otherwise
+	  switch (ppType) {
+	    case 0: { // Encryption algorithm: we handle only NULL and AES-CM
+	      if (ppLength != 1) break;
+	      u_int8_t value = ptr[0];
+	      if (value > 1) break; // unsupported algorithm
+	      if (value > 0) fEncryptSRTP = fEncryptSRTCP = True;
+	          // Note: these might get changed by a subsequent "off/on" entry
+	      policyIsOK = True;
+	      break;
+	    }
+	    case 1: { // Session Encr. key length
+	      if (ppLength != 1) break;
+	      u_int8_t value = ptr[0];
+	      if (value != 16) break; // bad/unsupported value
+	      policyIsOK = True;
+	      break;
+	    }
+	    case 2: { // Authentication algorithm: we handle only NULL and HMAC-SHA-1
+	      if (ppLength != 1) break;
+	      u_int8_t value = ptr[0];
+	      if (value > 1) break; // unsupported algorithm
+	      if (value > 0) fUseAuthentication = True;
+	          // Note: this might get changed by a subsequent "off/on" entry
+	      policyIsOK = True;
+	      break;
+	    }
+	    case 3: { // Session Auth. key length
+	      if (ppLength != 1) break;
+	      u_int8_t value = ptr[0];
+	      if (value != 20) break; // bad/unsupported value
+	      policyIsOK = True;
+	      break;
+	    }
+	    case 4: { // Session Salt key length
+	      if (ppLength != 1) break;
+	      u_int8_t value = ptr[0];
+	      if (value != 14) break; // bad/unsupported value
+	      policyIsOK = True;
+	      break;
+	    }
+	    case 7: { // SRTP encryption off/on
+	      if (ppLength != 1) break;
+	      u_int8_t value = ptr[0];
+	      if (value > 1) break; // bad/unsupported value
+	      fEncryptSRTP = value;
+	      policyIsOK = True;
+	      break;
+	    }
+	    case 8: { // SRTCP encryption off/on
+	      if (ppLength != 1) break;
+	      u_int8_t value = ptr[0];
+	      if (value > 1) break; // bad/unsupported value
+	      fEncryptSRTCP = value;
+	      policyIsOK = True;
+	      break;
+	    }
+	    case 10: { // SRTP authentication off/on
+	      if (ppLength != 1) break;
+	      u_int8_t value = ptr[0];
+	      if (value > 1) break; // bad/unsupported value
+	      fUseAuthentication = value;
+	      policyIsOK = True;
+	      break;
+	    }
+	    case 11: { // Authentication tag length
+	      if (ppLength != 1) break;
+	      u_int8_t value = ptr[0];
+	      if (value != 10) break; // bad/unsupported value
+	      policyIsOK = True;
+	      break;
+	    }
+	    default: { // a policy type that we don't handle; still OK
+	      policyIsOK = True;	
+	      break;
+	    }
+	  }
+	  if (!policyIsOK) break;
+
+	  ptr += ppLength;
+	  if (ptr == payloadEndPtr) {
+	    // We've successfully checked all of the "Policy param"s
+	    parsedPolicyParamSection = True;
+	    break;
+	  }
+	}
+	if (!parsedPolicyParamSection) break;
+	parseSucceeded = True;
+	break;
+      }
+      case KEMAC: {  // RFC 3830, section 6.2
+	testSize(3);
+	u_int8_t encrAlg = *ptr++;
+	// We currently support only 'NULL' encryption on the key data:
+	if (encrAlg != 0/*NULL*/) break; // unknown or unsupported key encryption
+
+	u_int16_t encrDataLen = get2Bytes(ptr);
+
+	testSize(encrDataLen);
+	// Parse the 'key data sub-payload':
+	{
+	  u_int8_t const* subPtr = ptr;
+	  if (encrDataLen < 4) break; // not enough space
+	  ++subPtr; // skip over the "Next payload" field
+	  
+	  // Check the "Type" and "KV" fields; we support only TEK and SPI/MKI
+	      // Note: This means that we'll reject the "a=key-mgmt" SDP MIKEY data from
+	      //   an Axis camera, because that doesn't specify SPI/MKI.  But that's what
+	      //   we want, because the Axis camera's "a=key-mgmt" SDP MIKEY data is meant
+	      //   to be ignored by clients.
+	  if (*subPtr++ != ((2<<4)|1)) break; // Type 2 (TEK) | KV 1 (SPI/MKI) 
+	  u_int16_t keyDataLen = get2Bytes(subPtr);
+	  // The key data length must be 30 (encryption key length (16) + salt length (14)):
+	  if (keyDataLen != 30) break;
+
+	  // Make sure we have enough space for the key data and the "SPI Length" field:
+	  if (4+keyDataLen+1 > encrDataLen) break;
+	  // Record the key data:
+	  memmove(fKeyData, subPtr, keyDataLen);
+	  subPtr += keyDataLen;
+
+	  // Check the "SPI Length"; we support only length 4:
+	  u_int8_t SPILength = *subPtr++;
+	  if (SPILength != 4) break;
+
+	  // Make a note of the MKI (the next 4 bytes):
+	  if (4+keyDataLen+1+SPILength > encrDataLen) break;
+	  fMKI = get4Bytes(subPtr);
+	}
+	ptr += encrDataLen;
+
+	testSize(1);
+	u_int8_t macAlg = *ptr++;
+	unsigned macLen;
+	// We currently support only a 'NULL' MAC on the key data:
+	if (macAlg == 0/*NULL*/) macLen = 0;
+	else break; // unknown or unsupported MAC algorithm => parse fails
+
+	testSize(macLen);
+	payloadSize = 4 + encrDataLen + 1 + macLen;
+	parseSucceeded = True;
+	break;
+      }
+      default: {
+	// Unknown payload type.  The parsing fails.
+	break;
+      }
+    }
+    if (!parseSucceeded) break;
+    
+    addNewPayload(new MIKEYPayload(*this, ourPayloadType, payloadStart, payloadSize));
+    ptr = payloadStart + payloadSize;
+    
+    return True;
+  } while (0);
+
+  // An error occurred:
+  return False;
+}
+
+
+////////// MIKEYPayload implementation //////////
+
+static void addWord(u_int8_t*& p, u_int32_t word) {
+  *p++ = word>>24; *p++ = word>>16; *p++ = word>>8; *p++ = word;
+}
+
+static void addHalfWord(u_int8_t*& p, u_int16_t halfWord) {
+  *p++ = halfWord>>8; *p++ = halfWord;
+}
+
+static void add1BytePolicyParam(u_int8_t*& p, u_int8_t type, u_int8_t value) {
+  *p++ = type;
+  *p++ = 1; // length
+  *p++ = value;
+}
+
+MIKEYPayload::MIKEYPayload(MIKEYState& ourMIKEYState, u_int8_t payloadType)
+  : fOurMIKEYState(ourMIKEYState), fPayloadType(payloadType), fNext(NULL) {
+  switch (payloadType) {
+    case HDR: { // RFC 3830, section 6.1
+      fDataSize = 19;
+      fData = new u_int8_t[fDataSize];
+      u_int8_t* p = fData;
+      *p++ = 1; // version
+      *p++ = 0; // Initiator's pre-shared key message
+      *p++ = 0; // no next payload (initially)
+      *p++ = 0; // V=0; PRF func: MIKEY-1
+      u_int32_t const CSB_ID = our_random32();
+      addWord(p, CSB_ID);
+      *p++ = 1; // #CS: 1
+      *p++ = 0; // CS ID map type: SRTP-ID
+      *p++ = 0; // Policy_no_1
+      addWord(p, our_random32()); // SSRC_1
+      addWord(p, 0x00000000); // ROC_1
+      break;
+    }
+    case T: { // RFC 3830, section 6.6
+      fDataSize = 10;
+      fData = new u_int8_t[fDataSize];
+      u_int8_t* p = fData;
+      *p++ = 0; // no next payload (initially)
+      *p++ = 0; // TS type: NTP-UTC
+
+      // Get the current time, and convert it to a NTP-UTC time:
+      struct timeval timeNow;
+      gettimeofday(&timeNow, NULL);
+      u_int32_t ntpSeconds = timeNow.tv_sec + 0x83AA7E80; // 1970 epoch -> 1900 epoch
+      addWord(p, ntpSeconds);
+      double fractionalPart = (timeNow.tv_usec/15625.0)*0x04000000; // 2^32/10^6
+      u_int32_t ntpFractionOfSecond = (u_int32_t)(fractionalPart+0.5); // round
+      addWord(p, ntpFractionOfSecond);
+      break;
+    }
+    case RAND: { // RFC 3830, section 6.11
+      fDataSize = 18;
+      fData = new u_int8_t[fDataSize];
+      u_int8_t* p = fData;
+      *p++ = 0; // no next payload (initially)
+      unsigned const numRandomWords = 4; // number of 32-bit words making up the RAND value
+      *p++ = 4*numRandomWords; // RAND len (in bytes)
+      for (unsigned i = 0; i < numRandomWords; ++i) {
+	u_int32_t randomNumber = our_random32();
+	addWord(p, randomNumber);
+      }
+      break;
+    }
+    case SP: { // RFC 3830, section 6.10
+      fDataSize = 32;
+      fData = new u_int8_t[fDataSize];
+      u_int8_t* p = fData;
+      *p++ = 0; // no next payload (initially)
+      *p++ = 0; // Policy number
+      *p++ = 0; // Protocol type: SRTP
+      u_int16_t policyParamLen = 27;
+      addHalfWord(p, policyParamLen);
+      // Now add the SRTP policy parameters:
+      add1BytePolicyParam(p, 0/*Encryption algorithm*/,
+			  (fOurMIKEYState.encryptSRTP()||fOurMIKEYState.encryptSRTCP())
+			  ? 1/*AES-CM*/ : 0/*NULL*/);
+      add1BytePolicyParam(p, 1/*Session Encryption key length*/, 16);
+      add1BytePolicyParam(p, 2/*Authentication algorithm*/,
+			  fOurMIKEYState.useAuthentication()
+			  ? 1/*HMAC-SHA-1*/ : 0/*NULL*/);
+      add1BytePolicyParam(p, 3/*Session Authentication key length*/, 20);
+      add1BytePolicyParam(p, 4/*Session Salt key length*/, 14);
+      add1BytePolicyParam(p, 7/*SRTP encryption off/on*/, fOurMIKEYState.encryptSRTP());
+      add1BytePolicyParam(p, 8/*SRTCP encryption off/on*/, fOurMIKEYState.encryptSRTCP());
+      add1BytePolicyParam(p, 10/*SRTP authentication off/on*/, fOurMIKEYState.useAuthentication());
+      add1BytePolicyParam(p, 11/*Authentication tag length*/, 10);
+      break;
+    }
+    case KEMAC: {  // RFC 3830, section 6.2
+      fDataSize = 44;
+      fData = new u_int8_t[fDataSize];
+      u_int8_t* p = fData;
+      *p++ = 0; // no next payload
+      *p++ = 0; // Encr alg (NULL)
+      u_int16_t encrDataLen = 39;
+      addHalfWord(p, encrDataLen);
+      { // Key data sub-payload (RFC 3830, section 6.13):
+	*p++ = 0; // no next payload
+	*p++ = (2<<4)|1; // Type 2 (TEK) | KV 1 (SPI/MKI)
+
+	// Key data len:
+	u_int16_t const keyDataLen = 30;
+	addHalfWord(p, keyDataLen);
+
+	// Key data:
+	memcpy(p, fOurMIKEYState.keyData(), keyDataLen);
+	p += keyDataLen;
+	
+	{ // KV data (for SPI/MKI) (RFC 3830, section 6.14):
+	  *p++ = 4; // SPI/MKI Length
+	  addWord(p, fOurMIKEYState.MKI());
+	}
+      }
+      *p++ = 0; // MAC alg (NULL)
+      break;
+    }
+    default: {
+      // Unused payload type.  Just in case, allocate 1 byte, for the
+      // presumed 'next payload type' field.
+      fDataSize = 1;
+      fData = new u_int8_t[fDataSize];
+      fData[0] = 0;
+      break;
+    }
+  }
+}
+
+MIKEYPayload::MIKEYPayload(MIKEYState& ourMIKEYState, u_int8_t payloadType,
+			   u_int8_t const* data, unsigned dataSize)
+  : fOurMIKEYState(ourMIKEYState), fPayloadType(payloadType),
+    fDataSize(dataSize), fNext(NULL) {
+  fData = new u_int8_t[fDataSize];
+  memcpy(fData, data, fDataSize);
+}
+
+MIKEYPayload::~MIKEYPayload() {
+  delete fNext;
+}
+
+void MIKEYPayload::setNextPayload(MIKEYPayload* nextPayload) {
+  fNext = nextPayload;
+
+  // We also need to set the 'next payload type' field in our data:
+  u_int8_t nextPayloadType = nextPayload->fPayloadType;
+  
+  switch (fPayloadType) {
+    case HDR: {
+      fData[2] = nextPayloadType;
+      break;
+    }
+    default: {
+      if (fData != NULL) fData[0] = nextPayloadType;
+      break;
+    }
+  }
+}
diff --git a/liveMedia/MP3ADU.cpp b/liveMedia/MP3ADU.cpp
new file mode 100644
index 0000000..d7deb79
--- /dev/null
+++ b/liveMedia/MP3ADU.cpp
@@ -0,0 +1,634 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// 'ADU' MP3 streams (for improved loss-tolerance)
+// Implementation
+
+#include "MP3ADU.hh"
+#include "MP3ADUdescriptor.hh"
+#include "MP3Internals.hh"
+#include <string.h>
+
+#ifdef TEST_LOSS
+#include "GroupsockHelper.hh"
+#endif
+
+// Segment data structures, used in the implementation below:
+
+#define SegmentBufSize 2000	/* conservatively high */
+
+class Segment {
+public:
+  unsigned char buf[SegmentBufSize];
+  unsigned char* dataStart() { return &buf[descriptorSize]; }
+  unsigned frameSize; // if it's a non-ADU frame
+  unsigned dataHere(); // if it's a non-ADU frame
+
+  unsigned descriptorSize;
+  static unsigned const headerSize;
+  unsigned sideInfoSize, aduSize;
+  unsigned backpointer;
+
+  struct timeval presentationTime;
+  unsigned durationInMicroseconds;
+};
+
+unsigned const Segment::headerSize = 4;
+
+#define SegmentQueueSize 20
+
+class SegmentQueue {
+public:
+  SegmentQueue(Boolean directionIsToADU, Boolean includeADUdescriptors)
+    : fDirectionIsToADU(directionIsToADU),
+      fIncludeADUdescriptors(includeADUdescriptors) {
+    reset();
+  }
+
+  Segment s[SegmentQueueSize];
+
+  unsigned headIndex() {return fHeadIndex;}
+  Segment& headSegment() {return s[fHeadIndex];}
+
+  unsigned nextFreeIndex() {return fNextFreeIndex;}
+  Segment& nextFreeSegment() {return s[fNextFreeIndex];}
+  Boolean isEmpty() {return isEmptyOrFull() && totalDataSize() == 0;}
+  Boolean isFull() {return isEmptyOrFull() && totalDataSize() > 0;}
+
+  static unsigned nextIndex(unsigned ix) {return (ix+1)%SegmentQueueSize;}
+  static unsigned prevIndex(unsigned ix) {return (ix+SegmentQueueSize-1)%SegmentQueueSize;}
+
+  unsigned totalDataSize() {return fTotalDataSize;}
+
+  void enqueueNewSegment(FramedSource* inputSource, FramedSource* usingSource);
+
+  Boolean dequeue();
+
+  Boolean insertDummyBeforeTail(unsigned backpointer);
+
+  void reset() { fHeadIndex = fNextFreeIndex = fTotalDataSize = 0; }
+
+private:
+  static void sqAfterGettingSegment(void* clientData,
+				    unsigned numBytesRead,
+				    unsigned numTruncatedBytes,
+				    struct timeval presentationTime,
+				    unsigned durationInMicroseconds);
+
+  Boolean sqAfterGettingCommon(Segment& seg, unsigned numBytesRead);
+  Boolean isEmptyOrFull() {return headIndex() == nextFreeIndex();}
+
+  unsigned fHeadIndex, fNextFreeIndex, fTotalDataSize;
+
+  // The following is used for asynchronous reads:
+  FramedSource* fUsingSource;
+
+  // This tells us whether the direction in which we're being used
+  // is MP3->ADU, or vice-versa.  (This flag is used for debugging output.)
+  Boolean fDirectionIsToADU;
+
+  // The following is true iff we're used to enqueue incoming
+  // ADU frames, and these have an ADU descriptor in front
+  Boolean fIncludeADUdescriptors;
+};
+
+////////// ADUFromMP3Source //////////
+
+ADUFromMP3Source::ADUFromMP3Source(UsageEnvironment& env,
+				   FramedSource* inputSource,
+				   Boolean includeADUdescriptors)
+  : FramedFilter(env, inputSource),
+    fAreEnqueueingMP3Frame(False),
+    fSegments(new SegmentQueue(True /* because we're MP3->ADU */,
+			       False /*no descriptors in incoming frames*/)),
+    fIncludeADUdescriptors(includeADUdescriptors),
+    fTotalDataSizeBeforePreviousRead(0), fScale(1), fFrameCounter(0) {
+}
+
+ADUFromMP3Source::~ADUFromMP3Source() {
+  delete fSegments;
+}
+
+
+char const* ADUFromMP3Source::MIMEtype() const {
+  return "audio/MPA-ROBUST";
+}
+
+ADUFromMP3Source* ADUFromMP3Source::createNew(UsageEnvironment& env,
+                                              FramedSource* inputSource,
+                                              Boolean includeADUdescriptors) {
+  // The source must be a MPEG audio source:
+  if (strcmp(inputSource->MIMEtype(), "audio/MPEG") != 0) {
+    env.setResultMsg(inputSource->name(), " is not an MPEG audio source");
+    return NULL;
+  }
+
+  return new ADUFromMP3Source(env, inputSource, includeADUdescriptors);
+}
+
+void ADUFromMP3Source::resetInput() {
+  fSegments->reset();
+}
+
+Boolean ADUFromMP3Source::setScaleFactor(int scale) {
+  if (scale < 1) return False;
+  fScale = scale;
+  return True;
+}
+
+void ADUFromMP3Source::doGetNextFrame() {
+  if (!fAreEnqueueingMP3Frame) {
+    // Arrange to enqueue a new MP3 frame:
+    fTotalDataSizeBeforePreviousRead = fSegments->totalDataSize();
+    fAreEnqueueingMP3Frame = True;
+    fSegments->enqueueNewSegment(fInputSource, this);
+  } else {
+    // Deliver an ADU from a previously-read MP3 frame:
+    fAreEnqueueingMP3Frame = False;
+
+    if (!doGetNextFrame1()) {
+      // An internal error occurred; act as if our source went away:
+      handleClosure();
+    }
+  }
+}
+
+Boolean ADUFromMP3Source::doGetNextFrame1() {
+  // First, check whether we have enough previously-read data to output an
+  // ADU for the last-read MP3 frame:
+  unsigned tailIndex;
+  Segment* tailSeg;
+  Boolean needMoreData;
+
+  if (fSegments->isEmpty()) {
+    needMoreData = True;
+    tailSeg = NULL; tailIndex = 0; // unneeded, but stops compiler warnings
+  } else {
+    tailIndex = SegmentQueue::prevIndex(fSegments->nextFreeIndex());
+    tailSeg = &(fSegments->s[tailIndex]);
+
+    needMoreData
+	  = fTotalDataSizeBeforePreviousRead < tailSeg->backpointer // bp points back too far
+      || tailSeg->backpointer + tailSeg->dataHere() < tailSeg->aduSize; // not enough data
+  }
+
+  if (needMoreData) {
+    // We don't have enough data to output an ADU from the last-read MP3
+    // frame, so need to read another one and try again:
+    doGetNextFrame();
+    return True;
+  }
+
+  // Output an ADU from the tail segment:
+  fFrameSize = tailSeg->headerSize+tailSeg->sideInfoSize+tailSeg->aduSize;
+  fPresentationTime = tailSeg->presentationTime;
+  fDurationInMicroseconds = tailSeg->durationInMicroseconds;
+  unsigned descriptorSize
+    = fIncludeADUdescriptors ? ADUdescriptor::computeSize(fFrameSize) : 0;
+#ifdef DEBUG
+  fprintf(stderr, "m->a:outputting ADU %d<-%d, nbr:%d, sis:%d, dh:%d, (descriptor size: %d)\n", tailSeg->aduSize, tailSeg->backpointer, fFrameSize, tailSeg->sideInfoSize, tailSeg->dataHere(), descriptorSize);
+#endif
+  if (descriptorSize + fFrameSize > fMaxSize) {
+    envir() << "ADUFromMP3Source::doGetNextFrame1(): not enough room ("
+	    << descriptorSize + fFrameSize << ">"
+	    << fMaxSize << ")\n";
+    fFrameSize = 0;
+    return False;
+  }
+
+  unsigned char* toPtr = fTo;
+  // output the ADU descriptor:
+  if (fIncludeADUdescriptors) {
+    fFrameSize += ADUdescriptor::generateDescriptor(toPtr, fFrameSize);
+  }
+
+  // output header and side info:
+  memmove(toPtr, tailSeg->dataStart(),
+	  tailSeg->headerSize + tailSeg->sideInfoSize);
+  toPtr += tailSeg->headerSize + tailSeg->sideInfoSize;
+
+  // go back to the frame that contains the start of our data:
+  unsigned offset = 0;
+  unsigned i = tailIndex;
+  unsigned prevBytes = tailSeg->backpointer;
+  while (prevBytes > 0) {
+    i = SegmentQueue::prevIndex(i);
+    unsigned dataHere = fSegments->s[i].dataHere();
+    if (dataHere < prevBytes) {
+      prevBytes -= dataHere;
+    } else {
+      offset = dataHere - prevBytes;
+      break;
+    }
+  }
+
+  // dequeue any segments that we no longer need:
+  while (fSegments->headIndex() != i) {
+    fSegments->dequeue(); // we're done with it
+  }
+
+  unsigned bytesToUse = tailSeg->aduSize;
+  while (bytesToUse > 0) {
+    Segment& seg = fSegments->s[i];
+    unsigned char* fromPtr
+      = &seg.dataStart()[seg.headerSize + seg.sideInfoSize + offset];
+    unsigned dataHere = seg.dataHere() - offset;
+    unsigned bytesUsedHere = dataHere < bytesToUse ? dataHere : bytesToUse;
+    memmove(toPtr, fromPtr, bytesUsedHere);
+    bytesToUse -= bytesUsedHere;
+    toPtr += bytesUsedHere;
+    offset = 0;
+    i = SegmentQueue::nextIndex(i);
+  }
+
+
+  if (fFrameCounter++%fScale == 0) {
+    // Call our own 'after getting' function.  Because we're not a 'leaf'
+    // source, we can call this directly, without risking infinite recursion.
+    afterGetting(this);
+  } else {
+    // Don't use this frame; get another one:
+    doGetNextFrame();
+  }
+
+  return True;
+}
+
+
+////////// MP3FromADUSource //////////
+
+MP3FromADUSource::MP3FromADUSource(UsageEnvironment& env,
+				   FramedSource* inputSource,
+				   Boolean includeADUdescriptors)
+  : FramedFilter(env, inputSource),
+    fAreEnqueueingADU(False),
+    fSegments(new SegmentQueue(False /* because we're ADU->MP3 */,
+			       includeADUdescriptors)) {
+}
+
+MP3FromADUSource::~MP3FromADUSource() {
+  delete fSegments;
+}
+
+char const* MP3FromADUSource::MIMEtype() const {
+  return "audio/MPEG";
+}
+
+MP3FromADUSource* MP3FromADUSource::createNew(UsageEnvironment& env,
+					      FramedSource* inputSource,
+					      Boolean includeADUdescriptors) {
+  // The source must be an MP3 ADU source:
+  if (strcmp(inputSource->MIMEtype(), "audio/MPA-ROBUST") != 0) {
+    env.setResultMsg(inputSource->name(), " is not an MP3 ADU source");
+    return NULL;
+  }
+
+  return new MP3FromADUSource(env, inputSource, includeADUdescriptors);
+}
+
+
+void MP3FromADUSource::doGetNextFrame() {
+  if (fAreEnqueueingADU) insertDummyADUsIfNecessary();
+  fAreEnqueueingADU = False;
+
+  if (needToGetAnADU()) {
+    // Before returning a frame, we must enqueue at least one ADU:
+#ifdef TEST_LOSS
+  NOTE: This code no longer works, because it uses synchronous reads,
+  which are no longer supported.
+    static unsigned const framesPerPacket = 10;
+    static unsigned const frameCount = 0;
+    static Boolean packetIsLost;
+    while (1) {
+      if ((frameCount++)%framesPerPacket == 0) {
+	packetIsLost = (our_random()%10 == 0); // simulate 10% packet loss #####
+      }
+
+      if (packetIsLost) {
+	// Read and discard the next input frame (that would be part of
+	// a lost packet):
+	Segment dummySegment;
+	unsigned numBytesRead;
+	struct timeval presentationTime;
+	// (this works only if the source can be read synchronously)
+	fInputSource->syncGetNextFrame(dummySegment.buf,
+				       sizeof dummySegment.buf, numBytesRead,
+				       presentationTime);
+      } else {
+	break; // from while (1)
+      }
+    }
+#endif
+
+    fAreEnqueueingADU = True;
+    fSegments->enqueueNewSegment(fInputSource, this);
+  } else {
+    // Return a frame now:
+    generateFrameFromHeadADU();
+        // sets fFrameSize, fPresentationTime, and fDurationInMicroseconds
+
+    // Call our own 'after getting' function.  Because we're not a 'leaf'
+    // source, we can call this directly, without risking infinite recursion.
+    afterGetting(this);
+  }
+}
+
+Boolean MP3FromADUSource::needToGetAnADU() {
+  // Check whether we need to first enqueue a new ADU before we
+  // can generate a frame for our head ADU.
+  Boolean needToEnqueue = True;
+
+  if (!fSegments->isEmpty()) {
+    unsigned index = fSegments->headIndex();
+    Segment* seg = &(fSegments->headSegment());
+    int const endOfHeadFrame = (int) seg->dataHere();
+    unsigned frameOffset = 0;
+
+    while (1) {
+      int endOfData = frameOffset - seg->backpointer + seg->aduSize;
+      if (endOfData >= endOfHeadFrame) {
+	// We already have enough data to generate a frame
+	needToEnqueue = False;
+	break;
+      }
+
+      frameOffset += seg->dataHere();
+      index = SegmentQueue::nextIndex(index);
+      if (index == fSegments->nextFreeIndex()) break;
+      seg = &(fSegments->s[index]);
+    }
+  }
+
+  return needToEnqueue;
+}
+
+void MP3FromADUSource::insertDummyADUsIfNecessary() {
+  if (fSegments->isEmpty()) return; // shouldn't happen
+
+  // The tail segment (ADU) is assumed to have been recently
+  // enqueued.  If its backpointer would overlap the data
+  // of the previous ADU, then we need to insert one or more
+  // empty, 'dummy' ADUs ahead of it.  (This situation should occur
+  // only if an intermediate ADU was lost.)
+
+  unsigned tailIndex
+    = SegmentQueue::prevIndex(fSegments->nextFreeIndex());
+  Segment* tailSeg = &(fSegments->s[tailIndex]);
+
+  while (1) {
+    unsigned prevADUend; // relative to the start of the new ADU
+    if (fSegments->headIndex() != tailIndex) {
+      // there is a previous segment
+      unsigned prevIndex = SegmentQueue::prevIndex(tailIndex);
+      Segment& prevSegment = fSegments->s[prevIndex];
+      prevADUend = prevSegment.dataHere() + prevSegment.backpointer;
+      if (prevSegment.aduSize > prevADUend) {
+	// shouldn't happen if the previous ADU was well-formed
+	prevADUend = 0;
+      } else {
+	prevADUend -= prevSegment.aduSize;
+      }
+    } else {
+      prevADUend = 0;
+    }
+
+    if (tailSeg->backpointer > prevADUend) {
+      // We need to insert a dummy ADU in front of the tail
+#ifdef DEBUG
+      fprintf(stderr, "a->m:need to insert a dummy ADU (%d, %d, %d) [%d, %d]\n", tailSeg->backpointer, prevADUend, tailSeg->dataHere(), fSegments->headIndex(), fSegments->nextFreeIndex());
+#endif
+      tailIndex = fSegments->nextFreeIndex();
+      if (!fSegments->insertDummyBeforeTail(prevADUend)) return;
+      tailSeg = &(fSegments->s[tailIndex]);
+    } else {
+      break; // no more dummy ADUs need to be inserted
+    }
+  }
+}
+
+Boolean MP3FromADUSource::generateFrameFromHeadADU() {
+    // Output a frame for the head ADU:
+    if (fSegments->isEmpty()) return False;
+    unsigned index = fSegments->headIndex();
+    Segment* seg = &(fSegments->headSegment());
+#ifdef DEBUG
+    fprintf(stderr, "a->m:outputting frame for %d<-%d (fs %d, dh %d), (descriptorSize: %d)\n", seg->aduSize, seg->backpointer, seg->frameSize, seg->dataHere(), seg->descriptorSize);
+#endif
+    unsigned char* toPtr = fTo;
+
+    // output header and side info:
+    fFrameSize = seg->frameSize;
+    fPresentationTime = seg->presentationTime;
+    fDurationInMicroseconds = seg->durationInMicroseconds;
+    memmove(toPtr, seg->dataStart(), seg->headerSize + seg->sideInfoSize);
+    toPtr += seg->headerSize + seg->sideInfoSize;
+
+    // zero out the rest of the frame, in case ADU data doesn't fill it all in
+    unsigned bytesToZero = seg->dataHere();
+    for (unsigned i = 0; i < bytesToZero; ++i) {
+      toPtr[i] = '\0';
+    }
+
+    // Fill in the frame with appropriate ADU data from this and
+    // subsequent ADUs:
+    unsigned frameOffset = 0;
+    unsigned toOffset = 0;
+    unsigned const endOfHeadFrame = seg->dataHere();
+
+    while (toOffset < endOfHeadFrame) {
+      int startOfData = frameOffset - seg->backpointer;
+      if (startOfData > (int)endOfHeadFrame) break; // no more ADUs needed
+
+      int endOfData = startOfData + seg->aduSize;
+      if (endOfData > (int)endOfHeadFrame) {
+	endOfData = endOfHeadFrame;
+      }
+
+      unsigned fromOffset;
+      if (startOfData <= (int)toOffset) {
+	fromOffset = toOffset - startOfData;
+	startOfData = toOffset;
+	if (endOfData < startOfData) endOfData = startOfData;
+      } else {
+	fromOffset = 0;
+
+	// we may need some padding bytes beforehand
+	unsigned bytesToZero = startOfData - toOffset;
+#ifdef DEBUG
+	if (bytesToZero > 0) fprintf(stderr, "a->m:outputting %d zero bytes (%d, %d, %d, %d)\n", bytesToZero, startOfData, toOffset, frameOffset, seg->backpointer);
+#endif
+	toOffset += bytesToZero;
+      }
+
+      unsigned char* fromPtr
+	= &seg->dataStart()[seg->headerSize + seg->sideInfoSize + fromOffset];
+      unsigned bytesUsedHere = endOfData - startOfData;
+#ifdef DEBUG
+      if (bytesUsedHere > 0) fprintf(stderr, "a->m:outputting %d bytes from %d<-%d\n", bytesUsedHere, seg->aduSize, seg->backpointer);
+#endif
+      memmove(toPtr + toOffset, fromPtr, bytesUsedHere);
+      toOffset += bytesUsedHere;
+
+      frameOffset += seg->dataHere();
+      index = SegmentQueue::nextIndex(index);
+      if (index == fSegments->nextFreeIndex()) break;
+      seg = &(fSegments->s[index]);
+    }
+
+    fSegments->dequeue();
+
+    return True;
+}
+
+
+////////// Segment //////////
+
+unsigned Segment::dataHere() {
+  int result = frameSize - (headerSize + sideInfoSize);
+  if (result < 0) {
+    return 0;
+  }
+
+  return (unsigned)result;
+}
+
+////////// SegmentQueue //////////
+
+void SegmentQueue::enqueueNewSegment(FramedSource* inputSource,
+				     FramedSource* usingSource) {
+  if (isFull()) {
+    usingSource->envir() << "SegmentQueue::enqueueNewSegment() overflow\n";
+    usingSource->handleClosure();
+    return;
+  }
+
+  fUsingSource = usingSource;
+
+  Segment& seg = nextFreeSegment();
+  inputSource->getNextFrame(seg.buf, sizeof seg.buf,
+			    sqAfterGettingSegment, this,
+			    FramedSource::handleClosure, usingSource);
+}
+
+void SegmentQueue::sqAfterGettingSegment(void* clientData,
+					 unsigned numBytesRead,
+					 unsigned /*numTruncatedBytes*/,
+					 struct timeval presentationTime,
+					 unsigned durationInMicroseconds) {
+  SegmentQueue* segQueue = (SegmentQueue*)clientData;
+  Segment& seg = segQueue->nextFreeSegment();
+
+  seg.presentationTime = presentationTime;
+  seg.durationInMicroseconds = durationInMicroseconds;
+
+  if (segQueue->sqAfterGettingCommon(seg, numBytesRead)) {
+#ifdef DEBUG
+    char const* direction = segQueue->fDirectionIsToADU ? "m->a" : "a->m";
+    fprintf(stderr, "%s:read frame %d<-%d, fs:%d, sis:%d, dh:%d, (descriptor size: %d)\n", direction, seg.aduSize, seg.backpointer, seg.frameSize, seg.sideInfoSize, seg.dataHere(), seg.descriptorSize);
+#endif
+  }
+
+  // Continue our original calling source where it left off:
+  segQueue->fUsingSource->doGetNextFrame();
+}
+
+// Common code called after a new segment is enqueued
+Boolean SegmentQueue::sqAfterGettingCommon(Segment& seg,
+					   unsigned numBytesRead) {
+  unsigned char* fromPtr = seg.buf;
+
+  if (fIncludeADUdescriptors) {
+    // The newly-read data is assumed to be an ADU with a descriptor
+    // in front
+    (void)ADUdescriptor::getRemainingFrameSize(fromPtr);
+    seg.descriptorSize = (unsigned)(fromPtr-seg.buf);
+  } else {
+    seg.descriptorSize = 0;
+  }
+
+  // parse the MP3-specific info in the frame to get the ADU params
+  unsigned hdr;
+  MP3SideInfo sideInfo;
+  if (!GetADUInfoFromMP3Frame(fromPtr, numBytesRead,
+			      hdr, seg.frameSize,
+			      sideInfo, seg.sideInfoSize,
+			      seg.backpointer, seg.aduSize)) {
+    return False;
+  }
+
+  // If we've just read an ADU (rather than a regular MP3 frame), then use the
+  // entire "numBytesRead" data for the 'aduSize', so that we include any
+  // 'ancillary data' that may be present at the end of the ADU:
+  if (!fDirectionIsToADU) {
+    unsigned newADUSize
+      = numBytesRead - seg.descriptorSize - 4/*header size*/ - seg.sideInfoSize;
+    if (newADUSize > seg.aduSize) seg.aduSize = newADUSize;
+  }
+  fTotalDataSize += seg.dataHere();
+  fNextFreeIndex = nextIndex(fNextFreeIndex);
+
+  return True;
+}
+
+Boolean SegmentQueue::dequeue() {
+  if (isEmpty()) {
+    fUsingSource->envir() << "SegmentQueue::dequeue(): underflow!\n";
+    return False;
+  }
+
+  Segment& seg = s[headIndex()];
+  fTotalDataSize -= seg.dataHere();
+  fHeadIndex = nextIndex(fHeadIndex);
+  return True;
+}
+
+Boolean SegmentQueue::insertDummyBeforeTail(unsigned backpointer) {
+  if (isEmptyOrFull()) return False;
+
+  // Copy the current tail segment to its new position, then modify the
+  // old tail segment to be a 'dummy' ADU
+
+  unsigned newTailIndex = nextFreeIndex();
+  Segment& newTailSeg = s[newTailIndex];
+
+  unsigned oldTailIndex = prevIndex(newTailIndex);
+  Segment& oldTailSeg = s[oldTailIndex];
+
+  newTailSeg = oldTailSeg; // structure copy
+
+  // Begin by setting (replacing) the ADU descriptor of the dummy ADU:
+  unsigned char* ptr = oldTailSeg.buf;
+  if (fIncludeADUdescriptors) {
+    unsigned remainingFrameSize
+      = oldTailSeg.headerSize + oldTailSeg.sideInfoSize + 0 /* 0-size ADU */;
+    unsigned currentDescriptorSize = oldTailSeg.descriptorSize;
+
+    if (currentDescriptorSize == 2) {
+      ADUdescriptor::generateTwoByteDescriptor(ptr, remainingFrameSize);
+    } else {
+      (void)ADUdescriptor::generateDescriptor(ptr, remainingFrameSize);
+    }
+  }
+
+  // Then zero out the side info of the dummy frame:
+  if (!ZeroOutMP3SideInfo(ptr, oldTailSeg.frameSize,
+			  backpointer)) return False;
+
+  unsigned dummyNumBytesRead
+    = oldTailSeg.descriptorSize + 4/*header size*/ + oldTailSeg.sideInfoSize;
+  return sqAfterGettingCommon(oldTailSeg, dummyNumBytesRead);
+}
diff --git a/liveMedia/MP3ADURTPSink.cpp b/liveMedia/MP3ADURTPSink.cpp
new file mode 100644
index 0000000..88df8b4
--- /dev/null
+++ b/liveMedia/MP3ADURTPSink.cpp
@@ -0,0 +1,119 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for 'ADUized' MP3 frames ("mpa-robust")
+// Implementation
+
+#include "MP3ADURTPSink.hh"
+
+MP3ADURTPSink::MP3ADURTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+			     unsigned char RTPPayloadType)
+  : AudioRTPSink(env, RTPgs, RTPPayloadType, 90000, "MPA-ROBUST") {
+}
+
+MP3ADURTPSink::~MP3ADURTPSink() {
+}
+
+MP3ADURTPSink*
+MP3ADURTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			 unsigned char RTPPayloadType) {
+  return new MP3ADURTPSink(env, RTPgs, RTPPayloadType);
+}
+
+static void badDataSize(UsageEnvironment& env, unsigned numBytesInFrame) {
+  env << "MP3ADURTPSink::doSpecialFrameHandling(): invalid size ("
+      << numBytesInFrame << ") of non-fragmented input ADU!\n";
+}
+
+void MP3ADURTPSink::doSpecialFrameHandling(unsigned fragmentationOffset,
+					   unsigned char* frameStart,
+					   unsigned numBytesInFrame,
+					   struct timeval framePresentationTime,
+					   unsigned numRemainingBytes) {
+  // If this is the first (or only) fragment of an ADU, then
+  // check the "ADU descriptor" (that should be at the front) for validity:
+  if (fragmentationOffset == 0) {
+    unsigned aduDescriptorSize;
+
+    if (numBytesInFrame < 1) {
+      badDataSize(envir(), numBytesInFrame);
+      return;
+    }
+    if (frameStart[0]&0x40) {
+      // We have a 2-byte ADU descriptor
+      aduDescriptorSize = 2;
+      if (numBytesInFrame < 2) {
+	badDataSize(envir(), numBytesInFrame);
+	return;
+      }
+      fCurADUSize = ((frameStart[0]&~0xC0)<<8) | frameStart[1];
+    } else {
+      // We have a 1-byte ADU descriptor
+      aduDescriptorSize = 1;
+      fCurADUSize = frameStart[0]&~0x80;
+    }
+
+    if (frameStart[0]&0x80) {
+      envir() << "Unexpected \"C\" bit seen on non-fragment input ADU!\n";
+      return;
+    }
+
+    // Now, check whether the ADU size in the ADU descriptor is consistent
+    // with the total data size of (all fragments of) the input frame:
+    unsigned expectedADUSize =
+      fragmentationOffset + numBytesInFrame + numRemainingBytes
+      - aduDescriptorSize;
+    if (fCurADUSize != expectedADUSize) {
+      envir() << "MP3ADURTPSink::doSpecialFrameHandling(): Warning: Input ADU size "
+	      << expectedADUSize << " (=" << fragmentationOffset
+	      << "+" << numBytesInFrame << "+" << numRemainingBytes
+	      << "-" << aduDescriptorSize
+	      << ") did not match the value (" << fCurADUSize
+	      << ") in the ADU descriptor!\n";
+      fCurADUSize = expectedADUSize;
+    }
+  } else {
+    // This is the second (or subsequent) fragment.
+    // Insert a new ADU descriptor:
+    unsigned char aduDescriptor[2];
+    aduDescriptor[0] = 0xC0|(fCurADUSize>>8);
+    aduDescriptor[1] = fCurADUSize&0xFF;
+    setSpecialHeaderBytes(aduDescriptor, 2);
+  }
+
+  // Important: Also call our base class's doSpecialFrameHandling(),
+  // to set the packet's timestamp:
+  MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
+					     frameStart, numBytesInFrame,
+					     framePresentationTime,
+					     numRemainingBytes);
+}
+
+unsigned MP3ADURTPSink::specialHeaderSize() const {
+  // Normally there's no special header.
+  // (The "ADU descriptor" is already present in the data.)
+  unsigned specialHeaderSize = 0;
+
+  // However, if we're about to output the second (or subsequent) fragment
+  // of a fragmented ADU, then we need to insert a new ADU descriptor at
+  // the front of the packet:
+  if (curFragmentationOffset() > 0) {
+    specialHeaderSize = 2;
+  }
+
+  return specialHeaderSize;
+}
diff --git a/liveMedia/MP3ADURTPSource.cpp b/liveMedia/MP3ADURTPSource.cpp
new file mode 100644
index 0000000..2a6e1d2
--- /dev/null
+++ b/liveMedia/MP3ADURTPSource.cpp
@@ -0,0 +1,80 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP source for 'ADUized' MP3 frames ("mpa-robust")
+// Implementation
+
+#include "MP3ADURTPSource.hh"
+#include "MP3ADUdescriptor.hh"
+
+////////// ADUBufferedPacket and ADUBufferedPacketFactory //////////
+
+class ADUBufferedPacket: public BufferedPacket {
+private: // redefined virtual functions
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+                                 unsigned dataSize);
+};
+
+class ADUBufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+///////// MP3ADURTPSource implementation ////////
+
+MP3ADURTPSource*
+MP3ADURTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			   unsigned char rtpPayloadFormat,
+			   unsigned rtpTimestampFrequency) {
+   return new MP3ADURTPSource(env, RTPgs, rtpPayloadFormat,
+			      rtpTimestampFrequency);
+}
+
+MP3ADURTPSource::MP3ADURTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+				 unsigned char rtpPayloadFormat,
+				 unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs,
+			 rtpPayloadFormat, rtpTimestampFrequency,
+			 new ADUBufferedPacketFactory) {
+}
+
+MP3ADURTPSource::~MP3ADURTPSource() {
+}
+
+char const* MP3ADURTPSource::MIMEtype() const {
+  return "audio/MPA-ROBUST";
+}
+
+////////// ADUBufferedPacket and ADUBufferredPacketFactory implementation
+
+unsigned ADUBufferedPacket
+::nextEnclosedFrameSize(unsigned char*& framePtr, unsigned dataSize) {
+  // Return the size of the next MP3 'ADU', on the assumption that
+  // the input data is ADU-encoded MP3 frames.
+  unsigned char* frameDataPtr = framePtr;
+  unsigned remainingFrameSize
+    = ADUdescriptor::getRemainingFrameSize(frameDataPtr);
+  unsigned descriptorSize = (unsigned)(frameDataPtr - framePtr);
+  unsigned fullADUSize = descriptorSize + remainingFrameSize;
+
+  return (fullADUSize <= dataSize) ? fullADUSize : dataSize;
+}
+
+BufferedPacket* ADUBufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* /*ourSource*/) {
+  return new ADUBufferedPacket;
+}
diff --git a/liveMedia/MP3ADUTranscoder.cpp b/liveMedia/MP3ADUTranscoder.cpp
new file mode 100644
index 0000000..78a251f
--- /dev/null
+++ b/liveMedia/MP3ADUTranscoder.cpp
@@ -0,0 +1,92 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Transcoder for ADUized MP3 frames
+// Implementation
+
+#include "MP3ADUTranscoder.hh"
+#include "MP3Internals.hh"
+#include <string.h>
+
+MP3ADUTranscoder::MP3ADUTranscoder(UsageEnvironment& env,
+				   unsigned outBitrate /* in kbps */,
+				   FramedSource* inputSource)
+  : FramedFilter(env, inputSource),
+    fOutBitrate(outBitrate),
+    fAvailableBytesForBackpointer(0),
+    fOrigADU(new unsigned char[MAX_MP3_FRAME_SIZE]) {
+}
+
+MP3ADUTranscoder::~MP3ADUTranscoder() {
+  delete[] fOrigADU;
+}
+
+MP3ADUTranscoder* MP3ADUTranscoder::createNew(UsageEnvironment& env,
+					      unsigned outBitrate /* in kbps */,
+					      FramedSource* inputSource) {
+  // The source must be an MP3 ADU source:
+  if (strcmp(inputSource->MIMEtype(), "audio/MPA-ROBUST") != 0) {
+    env.setResultMsg(inputSource->name(), " is not an MP3 ADU source");
+    return NULL;
+  }
+
+  return new MP3ADUTranscoder(env, outBitrate, inputSource);
+}
+
+void MP3ADUTranscoder::getAttributes() const {
+  // Begin by getting the attributes from our input source:
+  fInputSource->getAttributes();
+
+  // Then modify them by appending the corrected bandwidth
+  char buffer[30];
+  sprintf(buffer, " bandwidth %d", outBitrate());
+  envir().appendToResultMsg(buffer);
+}
+
+void MP3ADUTranscoder::doGetNextFrame() {
+  fInputSource->getNextFrame(fOrigADU, MAX_MP3_FRAME_SIZE,
+			     afterGettingFrame, this, handleClosure, this);
+}
+
+void MP3ADUTranscoder::afterGettingFrame(void* clientData,
+					 unsigned numBytesRead,
+					 unsigned numTruncatedBytes,
+					 struct timeval presentationTime,
+					 unsigned durationInMicroseconds) {
+  MP3ADUTranscoder* transcoder = (MP3ADUTranscoder*)clientData;
+  transcoder->afterGettingFrame1(numBytesRead, numTruncatedBytes,
+				 presentationTime, durationInMicroseconds);
+}
+
+void MP3ADUTranscoder::afterGettingFrame1(unsigned numBytesRead,
+					  unsigned numTruncatedBytes,
+					  struct timeval presentationTime,
+					  unsigned durationInMicroseconds) {
+  fNumTruncatedBytes = numTruncatedBytes; // but can we handle this being >0? #####
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+  fFrameSize = TranscodeMP3ADU(fOrigADU, numBytesRead, fOutBitrate,
+			    fTo, fMaxSize, fAvailableBytesForBackpointer);
+  if (fFrameSize == 0) { // internal error - bad ADU data?
+    handleClosure();
+    return;
+  }
+
+  // Call our own 'after getting' function.  Because we're not a 'leaf'
+  // source, we can call this directly, without risking infinite recursion.
+  afterGetting(this);
+}
diff --git a/liveMedia/MP3ADUdescriptor.cpp b/liveMedia/MP3ADUdescriptor.cpp
new file mode 100644
index 0000000..4667d05
--- /dev/null
+++ b/liveMedia/MP3ADUdescriptor.cpp
@@ -0,0 +1,65 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Descriptor preceding frames of 'ADU' MP3 streams (for improved loss-tolerance)
+// Implementation
+
+#include "MP3ADUdescriptor.hh"
+
+////////// ADUdescriptor //////////
+
+//##### NOTE: For now, ignore fragmentation.  Fix this later! #####
+
+#define TWO_BYTE_DESCR_FLAG 0x40
+
+unsigned ADUdescriptor::generateDescriptor(unsigned char*& toPtr,
+					   unsigned remainingFrameSize) {
+  unsigned descriptorSize = ADUdescriptor::computeSize(remainingFrameSize);
+  switch (descriptorSize) {
+  case 1: {
+    *toPtr++ = (unsigned char)remainingFrameSize;
+    break;
+  }
+  case 2: {
+    generateTwoByteDescriptor(toPtr, remainingFrameSize);
+    break;
+  }
+  }
+
+  return descriptorSize;
+}
+
+void ADUdescriptor::generateTwoByteDescriptor(unsigned char*& toPtr,
+					      unsigned remainingFrameSize) {
+  *toPtr++ = (TWO_BYTE_DESCR_FLAG|(unsigned char)(remainingFrameSize>>8));
+  *toPtr++ = (unsigned char)(remainingFrameSize&0xFF);
+}
+
+unsigned ADUdescriptor::getRemainingFrameSize(unsigned char*& fromPtr) {
+  unsigned char firstByte = *fromPtr++;
+
+  if (firstByte&TWO_BYTE_DESCR_FLAG) {
+    // This is a 2-byte descriptor
+    unsigned char secondByte = *fromPtr++;
+
+    return ((firstByte&0x3F)<<8) | secondByte;
+  } else {
+    // This is a 1-byte descriptor
+    return (firstByte&0x3F);
+  }
+}
+
diff --git a/liveMedia/MP3ADUdescriptor.hh b/liveMedia/MP3ADUdescriptor.hh
new file mode 100644
index 0000000..3c9eef4
--- /dev/null
+++ b/liveMedia/MP3ADUdescriptor.hh
@@ -0,0 +1,43 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Descriptor preceding frames of 'ADU' MP3 streams (for improved loss-tolerance)
+// C++ header
+
+#ifndef _MP3_ADU_DESCRIPTOR_HH
+#define _MP3_ADU_DESCRIPTOR_HH
+
+// A class for handling the descriptor that begins each ADU frame:
+//   (Note: We don't yet implement fragmentation)
+class ADUdescriptor {
+public:
+  // Operations for generating a new descriptor
+  static unsigned computeSize(unsigned remainingFrameSize) {
+    return remainingFrameSize >= 64 ? 2 : 1;
+  }
+  static unsigned generateDescriptor(unsigned char*& toPtr, unsigned remainingFrameSize);
+   // returns descriptor size; increments "toPtr" afterwards
+  static void generateTwoByteDescriptor(unsigned char*& toPtr, unsigned remainingFrameSize);
+   // always generates a 2-byte descriptor, even if "remainingFrameSize" is
+   // small enough for a 1-byte descriptor
+
+  // Operations for reading a descriptor
+  static unsigned getRemainingFrameSize(unsigned char*& fromPtr);
+   // increments "fromPtr" afterwards
+};
+
+#endif
diff --git a/liveMedia/MP3ADUinterleaving.cpp b/liveMedia/MP3ADUinterleaving.cpp
new file mode 100644
index 0000000..7f3a68c
--- /dev/null
+++ b/liveMedia/MP3ADUinterleaving.cpp
@@ -0,0 +1,517 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Interleaving of MP3 ADUs
+// Implementation
+
+#include "MP3ADUinterleaving.hh"
+#include "MP3ADUdescriptor.hh"
+
+#include <string.h>
+
+#ifdef TEST_LOSS
+#include "GroupsockHelper.hh"
+#endif
+
+////////// Interleaving //////////
+
+Interleaving::Interleaving(unsigned cycleSize,
+			   unsigned char const* cycleArray)
+  : fCycleSize(cycleSize) {
+  for (unsigned i = 0; i < fCycleSize; ++i) {
+    fInverseCycle[cycleArray[i]] = i;
+  }
+}
+
+Interleaving::~Interleaving() {
+}
+
+////////// MP3ADUinterleaverBase //////////
+
+MP3ADUinterleaverBase::MP3ADUinterleaverBase(UsageEnvironment& env,
+					     FramedSource* inputSource)
+  : FramedFilter(env, inputSource) {
+}
+MP3ADUinterleaverBase::~MP3ADUinterleaverBase() {
+}
+
+FramedSource* MP3ADUinterleaverBase::getInputSource(UsageEnvironment& env,
+						    char const* inputSourceName) {
+  FramedSource* inputSource;
+  if (!FramedSource::lookupByName(env, inputSourceName, inputSource))
+    return NULL;
+
+  if (strcmp(inputSource->MIMEtype(), "audio/MPA-ROBUST") != 0) {
+    env.setResultMsg(inputSourceName, " is not an MP3 ADU source");
+    return NULL;
+  }
+
+  return inputSource;
+}
+
+void MP3ADUinterleaverBase::afterGettingFrame(void* clientData,
+					      unsigned numBytesRead,
+					      unsigned /*numTruncatedBytes*/,
+					      struct timeval presentationTime,
+					      unsigned durationInMicroseconds) {
+  MP3ADUinterleaverBase* interleaverBase = (MP3ADUinterleaverBase*)clientData;
+  // Finish up after reading:
+  interleaverBase->afterGettingFrame(numBytesRead,
+				     presentationTime, durationInMicroseconds);
+
+  // Then, continue to deliver an outgoing frame:
+  interleaverBase->doGetNextFrame();
+}
+
+
+////////// InterleavingFrames (definition) //////////
+
+class InterleavingFrames {
+public:
+  InterleavingFrames(unsigned maxCycleSize);
+  virtual ~InterleavingFrames();
+
+  Boolean haveReleaseableFrame();
+  void getIncomingFrameParams(unsigned char index,
+			      unsigned char*& dataPtr,
+			      unsigned& bytesAvailable);
+  void getReleasingFrameParams(unsigned char index,
+			       unsigned char*& dataPtr,
+			       unsigned& bytesInUse,
+			       struct timeval& presentationTime,
+			       unsigned& durationInMicroseconds);
+  void setFrameParams(unsigned char index,
+		      unsigned char icc, unsigned char ii,
+		      unsigned frameSize, struct timeval presentationTime,
+		      unsigned durationInMicroseconds);
+  unsigned nextIndexToRelease() {return fNextIndexToRelease;}
+  void releaseNext();
+
+private:
+  unsigned fMaxCycleSize;
+  unsigned fNextIndexToRelease;
+  class InterleavingFrameDescriptor* fDescriptors;
+};
+
+////////// MP3ADUinterleaver //////////
+
+
+MP3ADUinterleaver::MP3ADUinterleaver(UsageEnvironment& env,
+				     Interleaving const& interleaving,
+				     FramedSource* inputSource)
+  : MP3ADUinterleaverBase(env, inputSource),
+    fInterleaving(interleaving),
+    fFrames(new InterleavingFrames(interleaving.cycleSize())),
+    fII(0), fICC(0) {
+}
+
+MP3ADUinterleaver::~MP3ADUinterleaver() {
+  delete fFrames;
+}
+
+MP3ADUinterleaver* MP3ADUinterleaver::createNew(UsageEnvironment& env,
+						Interleaving const& interleaving,
+						FramedSource* inputSource) {
+  return new MP3ADUinterleaver(env, interleaving, inputSource);
+}
+
+void MP3ADUinterleaver::doGetNextFrame() {
+  // If there's a frame immediately available, deliver it, otherwise get new
+  // frames from the source until one's available:
+  if (fFrames->haveReleaseableFrame()) {
+    releaseOutgoingFrame();
+
+    // Call our own 'after getting' function.  Because we're not a 'leaf'
+    // source, we can call this directly, without risking infinite recursion.
+    afterGetting(this);
+  } else {
+    fPositionOfNextIncomingFrame = fInterleaving.lookupInverseCycle(fII);
+    unsigned char* dataPtr;
+    unsigned bytesAvailable;
+    fFrames->getIncomingFrameParams(fPositionOfNextIncomingFrame,
+				    dataPtr, bytesAvailable);
+
+    // Read the next incoming frame (asynchronously)
+    fInputSource->getNextFrame(dataPtr, bytesAvailable,
+			       &MP3ADUinterleaverBase::afterGettingFrame, this,
+			       handleClosure, this);
+  }
+}
+
+void MP3ADUinterleaver::releaseOutgoingFrame() {
+  unsigned char* fromPtr;
+  fFrames->getReleasingFrameParams(fFrames->nextIndexToRelease(),
+				   fromPtr, fFrameSize,
+				   fPresentationTime, fDurationInMicroseconds);
+
+  if (fFrameSize > fMaxSize) {
+    fNumTruncatedBytes = fFrameSize - fMaxSize;
+    fFrameSize = fMaxSize;
+  }
+  memmove(fTo, fromPtr, fFrameSize);
+
+  fFrames->releaseNext();
+}
+
+void MP3ADUinterleaver::afterGettingFrame(unsigned numBytesRead,
+					  struct timeval presentationTime,
+					  unsigned durationInMicroseconds) {
+  // Set the (icc,ii) and frame size of the newly-read frame:
+  fFrames->setFrameParams(fPositionOfNextIncomingFrame,
+			  fICC, fII, numBytesRead,
+			  presentationTime, durationInMicroseconds);
+
+  // Prepare our counters for the next frame:
+  if (++fII == fInterleaving.cycleSize()) {
+    fII = 0;
+    fICC = (fICC+1)%8;
+  }
+}
+
+////////// DeinterleavingFrames (definition) //////////
+
+class DeinterleavingFrames {
+public:
+  DeinterleavingFrames();
+  virtual ~DeinterleavingFrames();
+
+  Boolean haveReleaseableFrame();
+  void getIncomingFrameParams(unsigned char*& dataPtr,
+			      unsigned& bytesAvailable);
+  void getIncomingFrameParamsAfter(unsigned frameSize,
+				   struct timeval presentationTime,
+				   unsigned durationInMicroseconds,
+				   unsigned char& icc, unsigned char& ii);
+  void getReleasingFrameParams(unsigned char*& dataPtr,
+			       unsigned& bytesInUse,
+			       struct timeval& presentationTime,
+			       unsigned& durationInMicroseconds);
+  void moveIncomingFrameIntoPlace();
+  void releaseNext();
+  void startNewCycle();
+
+private:
+  unsigned fNextIndexToRelease;
+  Boolean fHaveEndedCycle;
+  unsigned fIIlastSeen;
+  unsigned fMinIndexSeen, fMaxIndexSeen; // actually, max+1
+  class DeinterleavingFrameDescriptor* fDescriptors;
+};
+
+////////// MP3ADUdeinterleaver //////////
+
+MP3ADUdeinterleaver::MP3ADUdeinterleaver(UsageEnvironment& env,
+					 FramedSource* inputSource)
+  : MP3ADUinterleaverBase(env, inputSource),
+    fFrames(new DeinterleavingFrames),
+    fIIlastSeen(~0), fICClastSeen(~0) {
+}
+
+MP3ADUdeinterleaver::~MP3ADUdeinterleaver() {
+  delete fFrames;
+}
+
+MP3ADUdeinterleaver* MP3ADUdeinterleaver::createNew(UsageEnvironment& env,
+						    FramedSource* inputSource) {
+  return new MP3ADUdeinterleaver(env, inputSource);
+}
+
+void MP3ADUdeinterleaver::doGetNextFrame() {
+  // If there's a frame immediately available, deliver it, otherwise get new
+  // frames from the source until one's available:
+  if (fFrames->haveReleaseableFrame()) {
+    releaseOutgoingFrame();
+
+    // Call our own 'after getting' function.  Because we're not a 'leaf'
+    // source, we can call this directly, without risking infinite recursion.
+    afterGetting(this);
+  } else {
+#ifdef TEST_LOSS
+  NOTE: This code no longer works, because it uses synchronous reads,
+  which are no longer supported.
+    static unsigned const framesPerPacket = 3;
+    static unsigned const frameCount = 0;
+    static Boolean packetIsLost;
+    while (1) {
+      unsigned packetCount = frameCount/framesPerPacket;
+      if ((frameCount++)%framesPerPacket == 0) {
+	packetIsLost = (our_random()%10 == 0); // simulate 10% packet loss #####
+      }
+
+      if (packetIsLost) {
+	// Read and discard the next input frame (that would be part of
+	// a lost packet):
+	unsigned char dummyBuf[2000];
+	unsigned numBytesRead;
+	struct timeval presentationTime;
+	// (this works only if the source can be read synchronously)
+	fInputSource->syncGetNextFrame(dummyBuf, sizeof dummyBuf,
+				       numBytesRead, presentationTime);
+      } else {
+	break; // from while (1)
+      }
+    }
+#endif
+    unsigned char* dataPtr;
+    unsigned bytesAvailable;
+    fFrames->getIncomingFrameParams(dataPtr, bytesAvailable);
+
+    // Read the next incoming frame (asynchronously)
+    fInputSource->getNextFrame(dataPtr, bytesAvailable,
+			       &MP3ADUinterleaverBase::afterGettingFrame, this,
+			       handleClosure, this);
+  }
+}
+
+void MP3ADUdeinterleaver::afterGettingFrame(unsigned numBytesRead,
+					    struct timeval presentationTime,
+					    unsigned durationInMicroseconds) {
+  // Get the (icc,ii) and set the frame size of the newly-read frame:
+  unsigned char icc, ii;
+  fFrames->getIncomingFrameParamsAfter(numBytesRead,
+				       presentationTime, durationInMicroseconds,
+				       icc, ii);
+
+  // Compare these to the values we saw last:
+  if (icc != fICClastSeen || ii == fIIlastSeen) {
+    // We've started a new interleave cycle
+    // (or interleaving was not used).  Release all
+    // pending ADU frames to the ADU->MP3 conversion step:
+    fFrames->startNewCycle();
+  } else {
+    // We're still in the same cycle as before.
+    // Move the newly-read frame into place, so it can be used:
+    fFrames->moveIncomingFrameIntoPlace();
+  }
+
+  fICClastSeen = icc;
+  fIIlastSeen = ii;
+}
+
+void MP3ADUdeinterleaver::releaseOutgoingFrame() {
+  unsigned char* fromPtr;
+  fFrames->getReleasingFrameParams(fromPtr, fFrameSize,
+				   fPresentationTime, fDurationInMicroseconds);
+
+  if (fFrameSize > fMaxSize) {
+    fNumTruncatedBytes = fFrameSize - fMaxSize;
+    fFrameSize = fMaxSize;
+  }
+  memmove(fTo, fromPtr, fFrameSize);
+
+  fFrames->releaseNext();
+}
+
+////////// InterleavingFrames (implementation) //////////
+
+#define MAX_FRAME_SIZE 2000 /* conservatively high */
+
+class InterleavingFrameDescriptor {
+public:
+  InterleavingFrameDescriptor() {frameDataSize = 0;}
+
+  unsigned frameDataSize; // includes ADU descriptor and (modified) MPEG hdr
+  struct timeval presentationTime;
+  unsigned durationInMicroseconds;
+  unsigned char frameData[MAX_FRAME_SIZE]; // ditto
+};
+
+InterleavingFrames::InterleavingFrames(unsigned maxCycleSize)
+  : fMaxCycleSize(maxCycleSize), fNextIndexToRelease(0),
+    fDescriptors(new InterleavingFrameDescriptor[maxCycleSize]) {
+}
+InterleavingFrames::~InterleavingFrames() {
+  delete[] fDescriptors;
+}
+
+Boolean InterleavingFrames::haveReleaseableFrame() {
+  return fDescriptors[fNextIndexToRelease].frameDataSize > 0;
+}
+
+void InterleavingFrames::getIncomingFrameParams(unsigned char index,
+						unsigned char*& dataPtr,
+						unsigned& bytesAvailable) {
+  InterleavingFrameDescriptor& desc = fDescriptors[index];
+  dataPtr = &desc.frameData[0];
+  bytesAvailable = MAX_FRAME_SIZE;
+}
+
+void InterleavingFrames::getReleasingFrameParams(unsigned char index,
+						 unsigned char*& dataPtr,
+						 unsigned& bytesInUse,
+						 struct timeval& presentationTime,
+						 unsigned& durationInMicroseconds) {
+  InterleavingFrameDescriptor& desc = fDescriptors[index];
+  dataPtr = &desc.frameData[0];
+  bytesInUse = desc.frameDataSize;
+  presentationTime = desc.presentationTime;
+  durationInMicroseconds = desc.durationInMicroseconds;
+}
+
+void InterleavingFrames::setFrameParams(unsigned char index,
+					unsigned char icc,
+					unsigned char ii,
+					unsigned frameSize,
+					struct timeval presentationTime,
+					unsigned durationInMicroseconds) {
+  InterleavingFrameDescriptor& desc = fDescriptors[index];
+  desc.frameDataSize = frameSize;
+  desc.presentationTime = presentationTime;
+  desc.durationInMicroseconds = durationInMicroseconds;
+
+  // Advance over the ADU descriptor, to get to the MPEG 'syncword':
+  unsigned char* ptr = &desc.frameData[0];
+  (void)ADUdescriptor::getRemainingFrameSize(ptr);
+
+  // Replace the next 11 bits with (ii,icc):
+  *ptr++ = ii;
+  *ptr &=~ 0xE0;
+  *ptr |= (icc<<5);
+}
+
+void InterleavingFrames::releaseNext() {
+  fDescriptors[fNextIndexToRelease].frameDataSize = 0;
+  fNextIndexToRelease = (fNextIndexToRelease+1)%fMaxCycleSize;
+}
+
+////////// DeinterleavingFrames (implementation) //////////
+
+class DeinterleavingFrameDescriptor {
+public:
+  DeinterleavingFrameDescriptor() {frameDataSize = 0; frameData = NULL;}
+  virtual ~DeinterleavingFrameDescriptor() {delete[] frameData;}
+
+  unsigned frameDataSize; // includes ADU descriptor and (modified) MPEG hdr
+  struct timeval presentationTime;
+  unsigned durationInMicroseconds;
+  unsigned char* frameData;
+};
+
+DeinterleavingFrames::DeinterleavingFrames()
+  : fNextIndexToRelease(0), fHaveEndedCycle(False),
+    fMinIndexSeen(MAX_CYCLE_SIZE), fMaxIndexSeen(0),
+    fDescriptors(new DeinterleavingFrameDescriptor[MAX_CYCLE_SIZE+1]) {
+}
+DeinterleavingFrames::~DeinterleavingFrames() {
+  delete[] fDescriptors;
+}
+
+Boolean DeinterleavingFrames::haveReleaseableFrame() {
+  if (!fHaveEndedCycle) {
+    // Check just the next frame in the sequence
+    return fDescriptors[fNextIndexToRelease].frameDataSize > 0;
+  } else {
+    // We've just ended a cycle, so we can skip over frames that didn't
+    // get filled in (due to packet loss):
+    if (fNextIndexToRelease < fMinIndexSeen) {
+      fNextIndexToRelease = fMinIndexSeen;
+    }
+    while (fNextIndexToRelease < fMaxIndexSeen
+	   && fDescriptors[fNextIndexToRelease].frameDataSize == 0) {
+      ++fNextIndexToRelease;
+    }
+    if (fNextIndexToRelease >= fMaxIndexSeen) {
+      // No more frames are available from the cycle that we just ended, so
+      // clear out all previously stored frames, then make available
+      // the last-read frame, and return false for now:
+      for (unsigned i = fMinIndexSeen; i < fMaxIndexSeen; ++i) {
+	fDescriptors[i].frameDataSize = 0;
+      }
+
+      fMinIndexSeen = MAX_CYCLE_SIZE; fMaxIndexSeen = 0;
+      moveIncomingFrameIntoPlace();
+
+      fHaveEndedCycle = False;
+      fNextIndexToRelease = 0;
+      return False;
+    }
+
+    return True;
+  }
+}
+
+void DeinterleavingFrames::getIncomingFrameParams(unsigned char*& dataPtr,
+						  unsigned& bytesAvailable) {
+  // Use fDescriptors[MAX_CYCLE_SIZE] to store the incoming frame,
+  // prior to figuring out its real position:
+  DeinterleavingFrameDescriptor& desc = fDescriptors[MAX_CYCLE_SIZE];
+  if (desc.frameData == NULL) {
+    // There's no buffer yet, so allocate a new one:
+    desc.frameData = new unsigned char[MAX_FRAME_SIZE];
+  }
+  dataPtr = desc.frameData;
+  bytesAvailable = MAX_FRAME_SIZE;
+}
+
+void DeinterleavingFrames
+::getIncomingFrameParamsAfter(unsigned frameSize,
+			      struct timeval presentationTime,
+			      unsigned durationInMicroseconds,
+			      unsigned char& icc, unsigned char& ii) {
+  DeinterleavingFrameDescriptor& desc = fDescriptors[MAX_CYCLE_SIZE];
+  desc.frameDataSize = frameSize;
+  desc.presentationTime = presentationTime;
+  desc.durationInMicroseconds = durationInMicroseconds;
+
+  // Advance over the ADU descriptor, to get to the MPEG 'syncword':
+  unsigned char* ptr = desc.frameData;
+  (void)ADUdescriptor::getRemainingFrameSize(ptr);
+
+  // Read the next 11 bits into (ii,icc), and replace them with all-1s:
+  fIIlastSeen = ii = *ptr; *ptr++ = 0xFF;
+  icc = (*ptr&0xE0)>>5; *ptr |= 0xE0;
+}
+
+void DeinterleavingFrames::getReleasingFrameParams(unsigned char*& dataPtr,
+						   unsigned& bytesInUse,
+						   struct timeval& presentationTime,
+						   unsigned& durationInMicroseconds) {
+  DeinterleavingFrameDescriptor& desc = fDescriptors[fNextIndexToRelease];
+  dataPtr = desc.frameData;
+  bytesInUse = desc.frameDataSize;
+  presentationTime = desc.presentationTime;
+  durationInMicroseconds = desc.durationInMicroseconds;
+}
+
+void DeinterleavingFrames::moveIncomingFrameIntoPlace() {
+  DeinterleavingFrameDescriptor& fromDesc = fDescriptors[MAX_CYCLE_SIZE];
+  DeinterleavingFrameDescriptor& toDesc = fDescriptors[fIIlastSeen];
+
+  toDesc.frameDataSize = fromDesc.frameDataSize;
+  toDesc.presentationTime = fromDesc.presentationTime;
+
+  // Move the data pointer into place by swapping the data pointers:
+  unsigned char* tmp = toDesc.frameData;
+  toDesc.frameData = fromDesc.frameData;
+  fromDesc.frameData = tmp;
+
+  if (fIIlastSeen < fMinIndexSeen) {
+    fMinIndexSeen = fIIlastSeen;
+  }
+  if (fIIlastSeen + 1 > fMaxIndexSeen) {
+    fMaxIndexSeen = fIIlastSeen + 1;
+  }
+}
+
+void DeinterleavingFrames::releaseNext() {
+  fDescriptors[fNextIndexToRelease].frameDataSize = 0;
+  fNextIndexToRelease = (fNextIndexToRelease+1)%MAX_CYCLE_SIZE;
+}
+
+void DeinterleavingFrames::startNewCycle() {
+  fHaveEndedCycle = True;
+}
diff --git a/liveMedia/MP3AudioFileServerMediaSubsession.cpp b/liveMedia/MP3AudioFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..cc53ae1
--- /dev/null
+++ b/liveMedia/MP3AudioFileServerMediaSubsession.cpp
@@ -0,0 +1,179 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a MP3 audio file.
+// (Actually, any MPEG-1 or MPEG-2 audio file should work.)
+// Implementation
+
+#include "MP3AudioFileServerMediaSubsession.hh"
+#include "MPEG1or2AudioRTPSink.hh"
+#include "MP3ADURTPSink.hh"
+#include "MP3FileSource.hh"
+#include "MP3ADU.hh"
+
+MP3AudioFileServerMediaSubsession* MP3AudioFileServerMediaSubsession
+::createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource,
+	    Boolean generateADUs, Interleaving* interleaving) {
+  return new MP3AudioFileServerMediaSubsession(env, fileName, reuseFirstSource,
+					       generateADUs, interleaving);
+}
+
+MP3AudioFileServerMediaSubsession
+::MP3AudioFileServerMediaSubsession(UsageEnvironment& env,
+				    char const* fileName, Boolean reuseFirstSource,
+				    Boolean generateADUs,
+				    Interleaving* interleaving)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource),
+    fGenerateADUs(generateADUs), fInterleaving(interleaving), fFileDuration(0.0) {
+}
+
+MP3AudioFileServerMediaSubsession
+::~MP3AudioFileServerMediaSubsession() {
+  delete fInterleaving;
+}
+
+FramedSource* MP3AudioFileServerMediaSubsession
+::createNewStreamSourceCommon(FramedSource* baseMP3Source, unsigned mp3NumBytes, unsigned& estBitrate) {
+  FramedSource* streamSource;
+  do {
+    streamSource = baseMP3Source; // by default
+    if (streamSource == NULL) break;
+
+    // Use the MP3 file size, plus the duration, to estimate the stream's bitrate:
+    if (mp3NumBytes > 0 && fFileDuration > 0.0) {
+      estBitrate = (unsigned)(mp3NumBytes/(125*fFileDuration) + 0.5); // kbps, rounded
+    } else {
+      estBitrate = 128; // kbps, estimate
+    }
+
+    if (fGenerateADUs) {
+      // Add a filter that converts the source MP3s to ADUs:
+      streamSource = ADUFromMP3Source::createNew(envir(), streamSource);
+      if (streamSource == NULL) break;
+
+      if (fInterleaving != NULL) {
+	// Add another filter that interleaves the ADUs before packetizing:
+	streamSource = MP3ADUinterleaver::createNew(envir(), *fInterleaving,
+						    streamSource);
+	if (streamSource == NULL) break;
+      }
+    } else if (fFileDuration > 0.0) {
+      // Because this is a seekable file, insert a pair of filters: one that
+      // converts the input MP3 stream to ADUs; another that converts these
+      // ADUs back to MP3.  This allows us to seek within the input stream without
+      // tripping over the MP3 'bit reservoir':
+      streamSource = ADUFromMP3Source::createNew(envir(), streamSource);
+      if (streamSource == NULL) break;
+
+      streamSource = MP3FromADUSource::createNew(envir(), streamSource);
+      if (streamSource == NULL) break;
+    }
+  } while (0);
+
+  return streamSource;
+}
+
+void MP3AudioFileServerMediaSubsession::getBaseStreams(FramedSource* frontStream,
+						       FramedSource*& sourceMP3Stream, ADUFromMP3Source*& aduStream/*if any*/) {
+  if (fGenerateADUs) {
+    // There's an ADU stream.
+    if (fInterleaving != NULL) {
+      // There's an interleaving filter in front of the ADU stream.  So go back one, to reach the ADU stream:
+      aduStream = (ADUFromMP3Source*)(((FramedFilter*)frontStream)->inputSource());
+    } else {
+      aduStream = (ADUFromMP3Source*)frontStream;
+    }
+
+    // Then, go back one more, to reach the MP3 source:
+    sourceMP3Stream = (MP3FileSource*)(aduStream->inputSource());
+  } else if (fFileDuration > 0.0) {
+    // There are a pair of filters - MP3->ADU and ADU->MP3 - in front of the
+    // original MP3 source.  So, go back one, to reach the ADU source:
+    aduStream = (ADUFromMP3Source*)(((FramedFilter*)frontStream)->inputSource());
+
+    // Then, go back one more, to reach the MP3 source:
+    sourceMP3Stream = (MP3FileSource*)(aduStream->inputSource());
+  } else {
+    // There's no filter in front of the source MP3 stream (and there's no ADU stream):
+    aduStream = NULL;
+    sourceMP3Stream = frontStream;
+  }
+}
+
+
+void MP3AudioFileServerMediaSubsession
+::seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& /*numBytes*/) {
+  FramedSource* sourceMP3Stream;
+  ADUFromMP3Source* aduStream;
+  getBaseStreams(inputSource, sourceMP3Stream, aduStream);
+
+  if (aduStream != NULL) aduStream->resetInput(); // because we're about to seek within its source
+  ((MP3FileSource*)sourceMP3Stream)->seekWithinFile(seekNPT, streamDuration);
+}
+
+void MP3AudioFileServerMediaSubsession
+::setStreamSourceScale(FramedSource* inputSource, float scale) {
+
+  FramedSource* sourceMP3Stream;
+  ADUFromMP3Source* aduStream;
+  getBaseStreams(inputSource, sourceMP3Stream, aduStream);
+
+  if (aduStream == NULL) return; // because, in this case, the stream's not scalable
+
+  int iScale = (int)scale;
+  aduStream->setScaleFactor(iScale);
+  ((MP3FileSource*)sourceMP3Stream)->setPresentationTimeScale(iScale);
+}
+
+FramedSource* MP3AudioFileServerMediaSubsession
+::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  MP3FileSource* mp3Source = MP3FileSource::createNew(envir(), fFileName);
+  if (mp3Source == NULL) return NULL;
+  fFileDuration = mp3Source->filePlayTime();
+
+  return createNewStreamSourceCommon(mp3Source, mp3Source->fileSize(), estBitrate);
+}
+
+RTPSink* MP3AudioFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock,
+		   unsigned char rtpPayloadTypeIfDynamic,
+		   FramedSource* /*inputSource*/) {
+  if (fGenerateADUs) {
+    return MP3ADURTPSink::createNew(envir(), rtpGroupsock,
+				    rtpPayloadTypeIfDynamic);
+  } else {
+    return MPEG1or2AudioRTPSink::createNew(envir(), rtpGroupsock);
+  }
+}
+
+void MP3AudioFileServerMediaSubsession::testScaleFactor(float& scale) {
+  if (fFileDuration <= 0.0) {
+    // The file is non-seekable, so is probably a live input source.
+    // We don't support scale factors other than 1
+    scale = 1;
+  } else {
+    // We support any integral scale >= 1
+    int iScale = (int)(scale + 0.5); // round
+    if (iScale < 1) iScale = 1;
+    scale = (float)iScale;
+  }
+}
+
+float MP3AudioFileServerMediaSubsession::duration() const {
+  return fFileDuration;
+}
diff --git a/liveMedia/MP3AudioMatroskaFileServerMediaSubsession.cpp b/liveMedia/MP3AudioMatroskaFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..b71d1e4
--- /dev/null
+++ b/liveMedia/MP3AudioMatroskaFileServerMediaSubsession.cpp
@@ -0,0 +1,58 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an MP3 audio track within a Matroska file.
+// (Actually, MPEG-1 or MPEG-2 audio file should also work.)
+// Implementation
+
+#include "FileServerMediaSubsession.hh"
+#include "MP3AudioMatroskaFileServerMediaSubsession.hh"
+#include "MatroskaDemuxedTrack.hh"
+
+MP3AudioMatroskaFileServerMediaSubsession* MP3AudioMatroskaFileServerMediaSubsession
+::createNew(MatroskaFileServerDemux& demux, MatroskaTrack* track,
+	    Boolean generateADUs, Interleaving* interleaving) {
+  return new MP3AudioMatroskaFileServerMediaSubsession(demux, track, generateADUs, interleaving);
+}
+
+MP3AudioMatroskaFileServerMediaSubsession
+::MP3AudioMatroskaFileServerMediaSubsession(MatroskaFileServerDemux& demux, MatroskaTrack* track,
+					    Boolean generateADUs, Interleaving* interleaving)
+  : MP3AudioFileServerMediaSubsession(demux.envir(), demux.fileName(), False, generateADUs, interleaving),
+    fOurDemux(demux), fTrackNumber(track->trackNumber) {
+  fFileDuration = fOurDemux.fileDuration();
+}
+
+MP3AudioMatroskaFileServerMediaSubsession::~MP3AudioMatroskaFileServerMediaSubsession() {
+}
+
+void MP3AudioMatroskaFileServerMediaSubsession
+::seekStreamSource(FramedSource* inputSource, double& seekNPT, double /*streamDuration*/, u_int64_t& /*numBytes*/) {
+  FramedSource* sourceMP3Stream;
+  ADUFromMP3Source* aduStream;
+  getBaseStreams(inputSource, sourceMP3Stream, aduStream);
+
+  if (aduStream != NULL) aduStream->resetInput(); // because we're about to seek within its source
+  ((MatroskaDemuxedTrack*)sourceMP3Stream)->seekToTime(seekNPT);
+}
+
+FramedSource* MP3AudioMatroskaFileServerMediaSubsession
+::createNewStreamSource(unsigned clientSessionId, unsigned& estBitrate) {
+  FramedSource* baseMP3Source = fOurDemux.newDemuxedTrack(clientSessionId, fTrackNumber);
+  return createNewStreamSourceCommon(baseMP3Source, 0, estBitrate);
+}
diff --git a/liveMedia/MP3AudioMatroskaFileServerMediaSubsession.hh b/liveMedia/MP3AudioMatroskaFileServerMediaSubsession.hh
new file mode 100644
index 0000000..67cb663
--- /dev/null
+++ b/liveMedia/MP3AudioMatroskaFileServerMediaSubsession.hh
@@ -0,0 +1,57 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an MP3 audio track within a Matroska file.
+// (Actually, MPEG-1 or MPEG-2 audio should also work.)
+// C++ header
+
+#ifndef _MP3_AUDIO_MATROSKA_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _MP3_AUDIO_MATROSKA_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _MP3_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "MP3AudioFileServerMediaSubsession.hh"
+#endif
+#ifndef _MATROSKA_FILE_SERVER_DEMUX_HH
+#include "MatroskaFileServerDemux.hh"
+#endif
+
+class MP3AudioMatroskaFileServerMediaSubsession: public MP3AudioFileServerMediaSubsession {
+public:
+  static MP3AudioMatroskaFileServerMediaSubsession*
+  createNew(MatroskaFileServerDemux& demux, MatroskaTrack* track,
+	    Boolean generateADUs = False, Interleaving* interleaving = NULL);
+      // Note: "interleaving" is used only if "generateADUs" is True,
+      // (and a value of NULL means 'no interleaving')
+
+private:
+  MP3AudioMatroskaFileServerMediaSubsession(MatroskaFileServerDemux& demux, MatroskaTrack* track,
+					    Boolean generateADUs, Interleaving* interleaving);
+      // called only by createNew();
+  virtual ~MP3AudioMatroskaFileServerMediaSubsession();
+
+private: // redefined virtual functions
+  virtual void seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes);
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+                                              unsigned& estBitrate);
+
+private:
+  MatroskaFileServerDemux& fOurDemux;
+  unsigned fTrackNumber;
+};
+
+#endif
diff --git a/liveMedia/MP3FileSource.cpp b/liveMedia/MP3FileSource.cpp
new file mode 100644
index 0000000..bb622d4
--- /dev/null
+++ b/liveMedia/MP3FileSource.cpp
@@ -0,0 +1,178 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP3 File Sources
+// Implementation
+
+#include "MP3FileSource.hh"
+#include "MP3StreamState.hh"
+#include "InputFile.hh"
+
+////////// MP3FileSource //////////
+
+MP3FileSource::MP3FileSource(UsageEnvironment& env, FILE* fid)
+  : FramedFileSource(env, fid),
+    fStreamState(new MP3StreamState(env)) {
+}
+
+MP3FileSource::~MP3FileSource() {
+  delete fStreamState;
+}
+
+char const* MP3FileSource::MIMEtype() const {
+  return "audio/MPEG";
+}
+
+MP3FileSource* MP3FileSource::createNew(UsageEnvironment& env, char const* fileName) {
+  MP3FileSource* newSource = NULL;
+
+  do {
+    FILE* fid;
+
+    fid = OpenInputFile(env, fileName);
+    if (fid == NULL) break;
+
+    newSource = new MP3FileSource(env, fid);
+    if (newSource == NULL) break;
+
+    unsigned fileSize = (unsigned)GetFileSize(fileName, fid);
+    newSource->assignStream(fid, fileSize);
+    if (!newSource->initializeStream()) break;
+
+    return newSource;
+  } while (0);
+
+  Medium::close(newSource);
+  return NULL;
+}
+
+float MP3FileSource::filePlayTime() const {
+  return fStreamState->filePlayTime();
+}
+
+unsigned MP3FileSource::fileSize() const {
+  return fStreamState->fileSize();
+}
+
+void MP3FileSource::setPresentationTimeScale(unsigned scale) {
+  fStreamState->setPresentationTimeScale(scale);
+}
+
+void MP3FileSource::seekWithinFile(double seekNPT, double streamDuration) {
+  float fileDuration = filePlayTime();
+
+  // First, make sure that 0.0 <= seekNPT <= seekNPT + streamDuration <= fileDuration
+  if (seekNPT < 0.0) {
+    seekNPT = 0.0;
+  } else if (seekNPT > fileDuration) {
+    seekNPT = fileDuration;
+  }
+  if (streamDuration < 0.0) {
+    streamDuration = 0.0;
+  } else if (seekNPT + streamDuration > fileDuration) {
+    streamDuration = fileDuration - seekNPT; 
+  }
+
+  float seekFraction = (float)seekNPT/fileDuration;
+  unsigned seekByteNumber = fStreamState->getByteNumberFromPositionFraction(seekFraction);
+  fStreamState->seekWithinFile(seekByteNumber);
+
+  fLimitNumBytesToStream = False; // by default
+  if (streamDuration > 0.0) {
+    float endFraction = (float)(seekNPT + streamDuration)/fileDuration;
+    unsigned endByteNumber = fStreamState->getByteNumberFromPositionFraction(endFraction);
+    if (endByteNumber > seekByteNumber) { // sanity check
+      fNumBytesToStream = endByteNumber - seekByteNumber;
+      fLimitNumBytesToStream = True;
+    }
+  }
+}
+
+void MP3FileSource::getAttributes() const {
+  char buffer[200];
+  fStreamState->getAttributes(buffer, sizeof buffer);
+  envir().setResultMsg(buffer);
+}
+
+void MP3FileSource::doGetNextFrame() {
+  if (!doGetNextFrame1()) {
+    handleClosure();
+    return;
+  }
+
+  // Switch to another task:
+#if defined(__WIN32__) || defined(_WIN32)
+  // HACK: liveCaster/lc uses an implementation of scheduleDelayedTask()
+  // that performs very badly (chewing up lots of CPU time, apparently polling)
+  // on Windows.  Until this is fixed, we just call our "afterGetting()"
+  // function directly.  This avoids infinite recursion, as long as our sink
+  // is discontinuous, which is the case for the RTP sink that liveCaster/lc
+  // uses. #####
+  afterGetting(this);
+#else
+  nextTask() = envir().taskScheduler().scheduleDelayedTask(0,
+				(TaskFunc*)afterGetting, this);
+#endif
+}
+
+Boolean MP3FileSource::doGetNextFrame1() {
+  if (fLimitNumBytesToStream && fNumBytesToStream == 0) return False; // we've already streamed as much as we were asked for
+
+  if (!fHaveJustInitialized) {
+    if (fStreamState->findNextHeader(fPresentationTime) == 0) return False;
+  } else {
+    fPresentationTime = fFirstFramePresentationTime;
+    fHaveJustInitialized = False;
+  }
+
+  if (!fStreamState->readFrame(fTo, fMaxSize, fFrameSize, fDurationInMicroseconds)) {
+    char tmp[200];
+    sprintf(tmp,
+	    "Insufficient buffer size %d for reading MPEG audio frame (needed %d)\n",
+	    fMaxSize, fFrameSize);
+    envir().setResultMsg(tmp);
+    fFrameSize = fMaxSize;
+    return False;
+  }
+  if (fNumBytesToStream > fFrameSize) fNumBytesToStream -= fFrameSize; else fNumBytesToStream = 0;
+
+  return True;
+}
+
+void MP3FileSource::assignStream(FILE* fid, unsigned fileSize) {
+  fStreamState->assignStream(fid, fileSize);
+}
+
+
+Boolean MP3FileSource::initializeStream() {
+  // Make sure the file has an appropriate header near the start:
+  if (fStreamState->findNextHeader(fFirstFramePresentationTime) == 0) {
+      envir().setResultMsg("not an MPEG audio file");
+      return False;
+  }
+
+  fStreamState->checkForXingHeader(); // in case this is a VBR file
+
+  fHaveJustInitialized = True;
+  fLimitNumBytesToStream = False;
+  fNumBytesToStream = 0;
+
+  // Hack: It's possible that our environment's 'result message' has been
+  // reset within this function, so set it again to our name now:
+  envir().setResultMsg(name());
+  return True;
+}
diff --git a/liveMedia/MP3Internals.cpp b/liveMedia/MP3Internals.cpp
new file mode 100644
index 0000000..3481b7c
--- /dev/null
+++ b/liveMedia/MP3Internals.cpp
@@ -0,0 +1,808 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP3 internal implementation details
+// Implementation
+
+#include "MP3InternalsHuffman.hh"
+
+#include <stdlib.h>
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+// This is crufty old code that needs to be cleaned up #####
+
+static unsigned const live_tabsel[2][3][16] = {
+   { {32,32,64,96,128,160,192,224,256,288,320,352,384,416,448,448},
+     {32,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,384},
+     {32,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,320} },
+
+   { {32,32,48,56,64,80,96,112,128,144,160,176,192,224,256,256},
+     {8,8,16,24,32,40,48,56,64,80,96,112,128,144,160,160},
+     {8,8,16,24,32,40,48,56,64,80,96,112,128,144,160,160} }
+};
+/* Note: live_tabsel[*][*][0 or 15] shouldn't occur; use dummy values there */
+
+static long const live_freqs[]
+= { 44100, 48000, 32000, 22050, 24000, 16000, 11025, 12000, 8000, 0 };
+
+struct bandInfoStruct {
+  int longIdx[23];
+  int longDiff[22];
+  int shortIdx[14];
+  int shortDiff[13];
+};
+
+static struct bandInfoStruct const bandInfo[7] = {
+/* MPEG 1.0 */
+ { {0,4,8,12,16,20,24,30,36,44,52,62,74, 90,110,134,162,196,238,288,342,418,576},
+   {4,4,4,4,4,4,6,6,8, 8,10,12,16,20,24,28,34,42,50,54, 76,158},
+   {0,4*3,8*3,12*3,16*3,22*3,30*3,40*3,52*3,66*3, 84*3,106*3,136*3,192*3},
+   {4,4,4,4,6,8,10,12,14,18,22,30,56} } ,
+
+ { {0,4,8,12,16,20,24,30,36,42,50,60,72, 88,106,128,156,190,230,276,330,384,576},
+   {4,4,4,4,4,4,6,6,6, 8,10,12,16,18,22,28,34,40,46,54, 54,192},
+   {0,4*3,8*3,12*3,16*3,22*3,28*3,38*3,50*3,64*3, 80*3,100*3,126*3,192*3},
+   {4,4,4,4,6,6,10,12,14,16,20,26,66} } ,
+
+ { {0,4,8,12,16,20,24,30,36,44,54,66,82,102,126,156,194,240,296,364,448,550,576} ,
+   {4,4,4,4,4,4,6,6,8,10,12,16,20,24,30,38,46,56,68,84,102, 26} ,
+   {0,4*3,8*3,12*3,16*3,22*3,30*3,42*3,58*3,78*3,104*3,138*3,180*3,192*3} ,
+   {4,4,4,4,6,8,12,16,20,26,34,42,12} }  ,
+
+/* MPEG 2.0 */
+ { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576},
+   {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 } ,
+   {0,4*3,8*3,12*3,18*3,24*3,32*3,42*3,56*3,74*3,100*3,132*3,174*3,192*3} ,
+   {4,4,4,6,6,8,10,14,18,26,32,42,18 } } ,
+
+ { {0,6,12,18,24,30,36,44,54,66,80,96,114,136,162,194,232,278,330,394,464,540,576},
+   {6,6,6,6,6,6,8,10,12,14,16,18,22,26,32,38,46,52,64,70,76,36 } ,
+   {0,4*3,8*3,12*3,18*3,26*3,36*3,48*3,62*3,80*3,104*3,136*3,180*3,192*3} ,
+   {4,4,4,6,8,10,12,14,18,24,32,44,12 } } ,
+
+ { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576},
+   {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 },
+   {0,4*3,8*3,12*3,18*3,26*3,36*3,48*3,62*3,80*3,104*3,134*3,174*3,192*3},
+   {4,4,4,6,8,10,12,14,18,24,30,40,18 } } ,
+
+/* MPEG 2.5, wrong! table (it's just a copy of MPEG 2.0/44.1kHz) */
+ { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576},
+   {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 } ,
+   {0,4*3,8*3,12*3,18*3,24*3,32*3,42*3,56*3,74*3,100*3,132*3,174*3,192*3} ,
+   {4,4,4,6,6,8,10,14,18,26,32,42,18 } } ,
+};
+
+unsigned int n_slen2[512]; /* MPEG 2.0 slen for 'normal' mode */
+unsigned int i_slen2[256]; /* MPEG 2.0 slen for intensity stereo */
+
+#define MPG_MD_MONO 3
+
+
+////////// MP3FrameParams //////////
+
+MP3FrameParams::MP3FrameParams()
+  : bv(frameBytes, 0, sizeof frameBytes) /* by default */ {
+  oldHdr = firstHdr = 0;
+
+  static Boolean doneInit = False;
+  if (doneInit) return;
+
+  int i,j,k,l;
+
+  for (i=0;i<5;i++) {
+    for (j=0;j<6;j++) {
+      for (k=0;k<6;k++) {
+        int n = k + j * 6 + i * 36;
+        i_slen2[n] = i|(j<<3)|(k<<6)|(3<<12);
+      }
+    }
+  }
+  for (i=0;i<4;i++) {
+    for (j=0;j<4;j++) {
+      for (k=0;k<4;k++) {
+        int n = k + j * 4 + i * 16;
+        i_slen2[n+180] = i|(j<<3)|(k<<6)|(4<<12);
+      }
+    }
+  }
+  for (i=0;i<4;i++) {
+    for (j=0;j<3;j++) {
+      int n = j + i * 3;
+      i_slen2[n+244] = i|(j<<3) | (5<<12);
+      n_slen2[n+500] = i|(j<<3) | (2<<12) | (1<<15);
+    }
+  }
+
+  for (i=0;i<5;i++) {
+    for (j=0;j<5;j++) {
+      for (k=0;k<4;k++) {
+        for (l=0;l<4;l++) {
+          int n = l + k * 4 + j * 16 + i * 80;
+          n_slen2[n] = i|(j<<3)|(k<<6)|(l<<9)|(0<<12);
+        }
+      }
+    }
+  }
+  for (i=0;i<5;i++) {
+    for (j=0;j<5;j++) {
+      for (k=0;k<4;k++) {
+        int n = k + j * 4 + i * 20;
+        n_slen2[n+400] = i|(j<<3)|(k<<6)|(1<<12);
+      }
+    }
+  }
+  doneInit = True;
+}
+
+MP3FrameParams::~MP3FrameParams() {
+}
+
+void MP3FrameParams::setParamsFromHeader() {
+  if (hdr & (1<<20)) {
+    isMPEG2 = (hdr & (1<<19)) ? 0x0 : 0x1;
+    isMPEG2_5 = 0;
+  }
+  else {
+    isMPEG2 = 1;
+    isMPEG2_5 = 1;
+  }
+
+  layer = 4-((hdr>>17)&3);
+  if (layer == 4) layer = 3; // layer==4 is not allowed
+  bitrateIndex = ((hdr>>12)&0xf);
+
+  if (isMPEG2_5) {
+    samplingFreqIndex = ((hdr>>10)&0x3) + 6;
+  } else {
+    samplingFreqIndex = ((hdr>>10)&0x3) + (isMPEG2*3);
+  }
+
+  hasCRC = (hdr & 0x10000) == 0;
+
+  padding   = ((hdr>>9)&0x1);
+  extension = ((hdr>>8)&0x1);
+  mode      = ((hdr>>6)&0x3);
+  mode_ext  = ((hdr>>4)&0x3);
+  copyright = ((hdr>>3)&0x1);
+  original  = ((hdr>>2)&0x1);
+  emphasis  = hdr & 0x3;
+
+  stereo    = (mode == MPG_MD_MONO) ? 1 : 2;
+
+  if (((hdr>>10)&0x3) == 0x3) {
+#ifdef DEBUG_ERRORS
+    fprintf(stderr,"Stream error - hdr: 0x%08x\n", hdr);
+#endif
+  }
+
+  bitrate = live_tabsel[isMPEG2][layer-1][bitrateIndex];
+  samplingFreq = live_freqs[samplingFreqIndex];
+  isStereo = (stereo > 1);
+  isFreeFormat = (bitrateIndex == 0);
+  frameSize
+    = ComputeFrameSize(bitrate, samplingFreq, padding, isMPEG2, layer);
+  sideInfoSize = computeSideInfoSize();
+ }
+
+unsigned MP3FrameParams::computeSideInfoSize() {
+  unsigned size;
+
+  if (isMPEG2) {
+    size = isStereo ? 17 : 9;
+  } else {
+    size = isStereo ? 32 : 17;
+  }
+
+  if (hasCRC) {
+    size += 2;
+  }
+
+  return size;
+}
+
+unsigned ComputeFrameSize(unsigned bitrate, unsigned samplingFreq,
+			  Boolean usePadding, Boolean isMPEG2,
+			  unsigned char layer) {
+  if (samplingFreq == 0) return 0;
+  unsigned const bitrateMultiplier = (layer == 1) ? 12000*4 : 144000;
+  unsigned framesize;
+
+  framesize = bitrate*bitrateMultiplier;
+  framesize /= samplingFreq<<(isMPEG2 ? 1 : 0);
+  framesize = framesize + usePadding - 4;
+
+  return framesize;
+}
+
+#define TRUNC_FAIRLY
+static unsigned updateSideInfoSizes(MP3SideInfo& sideInfo, Boolean isMPEG2,
+				    unsigned char const* mainDataPtr,
+				    unsigned allowedNumBits,
+				    unsigned& part23Length0a,
+				    unsigned& part23Length0aTruncation,
+				    unsigned& part23Length0b,
+				    unsigned& part23Length0bTruncation,
+				    unsigned& part23Length1a,
+				    unsigned& part23Length1aTruncation,
+				    unsigned& part23Length1b,
+				    unsigned& part23Length1bTruncation) {
+  unsigned p23L0, p23L1 = 0, p23L0Trunc = 0, p23L1Trunc = 0;
+
+  p23L0 = sideInfo.ch[0].gr[0].part2_3_length;
+  p23L1 = isMPEG2 ? 0 : sideInfo.ch[0].gr[1].part2_3_length;
+#ifdef TRUNC_ONLY0
+  if (p23L0 < allowedNumBits)
+    allowedNumBits = p23L0;
+#endif
+#ifdef TRUNC_ONLY1
+  if (p23L1 < allowedNumBits)
+    allowedNumBits = p23L1;
+#endif
+  if (p23L0 + p23L1 > allowedNumBits) {
+    /* We need to shorten one or both fields */
+    unsigned truncation = p23L0 + p23L1 - allowedNumBits;
+#ifdef TRUNC_FAIRLY
+    p23L0Trunc = (truncation*p23L0)/(p23L0 + p23L1);
+    p23L1Trunc = truncation - p23L0Trunc;
+#endif
+#if defined(TRUNC_FAVOR0) || defined(TRUNC_ONLY0)
+    p23L1Trunc = (truncation>p23L1) ? p23L1 : truncation;
+    p23L0Trunc = truncation - p23L1Trunc;
+#endif
+#if defined(TRUNC_FAVOR1) || defined(TRUNC_ONLY1)
+    p23L0Trunc = (truncation>p23L0) ? p23L0 : truncation;
+    p23L1Trunc = truncation - p23L0Trunc;
+#endif
+  }
+
+  /* ASSERT: (p23L0Trunc <= p23L0) && (p23l1Trunc <= p23L1) */
+  p23L0 -= p23L0Trunc; p23L1 -= p23L1Trunc;
+#ifdef DEBUG
+  fprintf(stderr, "updateSideInfoSizes (allowed: %d): %d->%d, %d->%d\n", allowedNumBits, p23L0+p23L0Trunc, p23L0, p23L1+p23L1Trunc, p23L1);
+#endif
+
+  // The truncations computed above are still estimates.  We need to
+  // adjust them so that the new fields will continue to end on
+  // Huffman-encoded sample boundaries:
+  updateSideInfoForHuffman(sideInfo, isMPEG2, mainDataPtr,
+			   p23L0, p23L1,
+			   part23Length0a, part23Length0aTruncation,
+			   part23Length0b, part23Length0bTruncation,
+			   part23Length1a, part23Length1aTruncation,
+			   part23Length1b, part23Length1bTruncation);
+  p23L0 = part23Length0a + part23Length0b;
+  p23L1 = part23Length1a + part23Length1b;
+
+  sideInfo.ch[0].gr[0].part2_3_length = p23L0;
+  sideInfo.ch[0].gr[1].part2_3_length = p23L1;
+  part23Length0bTruncation
+    += sideInfo.ch[1].gr[0].part2_3_length; /* allow for stereo */
+  sideInfo.ch[1].gr[0].part2_3_length = 0; /* output mono */
+  sideInfo.ch[1].gr[1].part2_3_length = 0; /* output mono */
+
+  return p23L0 + p23L1;
+}
+
+
+Boolean GetADUInfoFromMP3Frame(unsigned char const* framePtr,
+			       unsigned totFrameSize,
+			       unsigned& hdr, unsigned& frameSize,
+			       MP3SideInfo& sideInfo, unsigned& sideInfoSize,
+			       unsigned& backpointer, unsigned& aduSize) {
+  if (totFrameSize < 4) return False; // there's not enough data
+
+  MP3FrameParams fr;
+  fr.hdr =   ((unsigned)framePtr[0] << 24) | ((unsigned)framePtr[1] << 16)
+           | ((unsigned)framePtr[2] << 8) | (unsigned)framePtr[3];
+  fr.setParamsFromHeader();
+  fr.setBytePointer(framePtr + 4, totFrameSize - 4); // skip hdr
+
+  frameSize = 4 + fr.frameSize;
+
+  if (fr.layer != 3) {
+    // Special case for non-layer III frames
+    backpointer = 0;
+    sideInfoSize = 0;
+    aduSize = fr.frameSize;
+    return True;
+  }
+
+  sideInfoSize = fr.sideInfoSize;
+  if (totFrameSize < 4 + sideInfoSize) return False; // not enough data
+
+  fr.getSideInfo(sideInfo);
+
+  hdr = fr.hdr;
+  backpointer = sideInfo.main_data_begin;
+  unsigned numBits = sideInfo.ch[0].gr[0].part2_3_length;
+  numBits += sideInfo.ch[0].gr[1].part2_3_length;
+  numBits += sideInfo.ch[1].gr[0].part2_3_length;
+  numBits += sideInfo.ch[1].gr[1].part2_3_length;
+  aduSize = (numBits+7)/8;
+#ifdef DEBUG
+  fprintf(stderr, "mp3GetADUInfoFromFrame: hdr: %08x, frameSize: %d, part2_3_lengths: %d,%d,%d,%d, aduSize: %d, backpointer: %d\n", hdr, frameSize, sideInfo.ch[0].gr[0].part2_3_length, sideInfo.ch[0].gr[1].part2_3_length, sideInfo.ch[1].gr[0].part2_3_length, sideInfo.ch[1].gr[1].part2_3_length, aduSize, backpointer);
+#endif
+
+  return True;
+}
+
+
+static void getSideInfo1(MP3FrameParams& fr, MP3SideInfo& si,
+			 int stereo, int ms_stereo, long sfreq,
+			 int /*single*/) {
+   int ch, gr;
+#if 0
+   int powdiff = (single == 3) ? 4 : 0;
+#endif
+
+   /* initialize all four "part2_3_length" fields to zero: */
+   si.ch[0].gr[0].part2_3_length = 0; si.ch[1].gr[0].part2_3_length = 0;
+   si.ch[0].gr[1].part2_3_length = 0; si.ch[1].gr[1].part2_3_length = 0;
+
+   si.main_data_begin = fr.getBits(9);
+   if (stereo == 1)
+     si.private_bits = fr.getBits(5);
+   else
+     si.private_bits = fr.getBits(3);
+
+   for (ch=0; ch<stereo; ch++) {
+       si.ch[ch].gr[0].scfsi = -1;
+       si.ch[ch].gr[1].scfsi = fr.getBits(4);
+   }
+
+   for (gr=0; gr<2; gr++) {
+     for (ch=0; ch<stereo; ch++) {
+       MP3SideInfo::gr_info_s_t& gr_info = si.ch[ch].gr[gr];
+
+       gr_info.part2_3_length = fr.getBits(12);
+       gr_info.big_values = fr.getBits(9);
+       gr_info.global_gain = fr.getBits(8);
+#if 0
+       gr_info.pow2gain = gainpow2+256 - gr_info.global_gain + powdiff;
+       if (ms_stereo) gr_info.pow2gain += 2;
+#endif
+       gr_info.scalefac_compress = fr.getBits(4);
+/* window-switching flag == 1 for block_Type != 0 .. and block-type == 0 -> win-sw-flag = 0 */
+       gr_info.window_switching_flag = fr.get1Bit();
+       if (gr_info.window_switching_flag) {
+         int i;
+         gr_info.block_type = fr.getBits(2);
+         gr_info.mixed_block_flag = fr.get1Bit();
+         gr_info.table_select[0] = fr.getBits(5);
+         gr_info.table_select[1] = fr.getBits(5);
+         /*
+          * table_select[2] not needed, because there is no region2,
+          * but to satisfy some verifications tools we set it either.
+          */
+         gr_info.table_select[2] = 0;
+         for (i=0;i<3;i++) {
+	   gr_info.subblock_gain[i] = fr.getBits(3);
+           gr_info.full_gain[i]
+	     = gr_info.pow2gain + ((gr_info.subblock_gain[i])<<3);
+	 }
+
+#ifdef DEBUG_ERRORS
+         if (gr_info.block_type == 0) {
+           fprintf(stderr,"Blocktype == 0 and window-switching == 1 not allowed.\n");
+         }
+#endif
+         /* region_count/start parameters are implicit in this case. */
+         gr_info.region1start = 36>>1;
+         gr_info.region2start = 576>>1;
+       }
+       else
+       {
+         int i,r0c,r1c;
+         for (i=0; i<3; i++) {
+	   gr_info.table_select[i] = fr.getBits(5);
+	 }
+         r0c = gr_info.region0_count = fr.getBits(4);
+         r1c = gr_info.region1_count = fr.getBits(3);
+         gr_info.region1start = bandInfo[sfreq].longIdx[r0c+1] >> 1 ;
+         gr_info.region2start = bandInfo[sfreq].longIdx[r0c+1+r1c+1] >> 1;
+         gr_info.block_type = 0;
+         gr_info.mixed_block_flag = 0;
+       }
+       gr_info.preflag = fr.get1Bit();
+       gr_info.scalefac_scale = fr.get1Bit();
+       gr_info.count1table_select = fr.get1Bit();
+     }
+   }
+}
+
+static void getSideInfo2(MP3FrameParams& fr, MP3SideInfo& si,
+			 int stereo, int ms_stereo, long sfreq,
+			 int /*single*/) {
+   int ch;
+#if 0
+   int powdiff = (single == 3) ? 4 : 0;
+#endif
+
+   /* initialize all four "part2_3_length" fields to zero: */
+   si.ch[0].gr[0].part2_3_length = 0; si.ch[1].gr[0].part2_3_length = 0;
+   si.ch[0].gr[1].part2_3_length = 0; si.ch[1].gr[1].part2_3_length = 0;
+
+   si.main_data_begin = fr.getBits(8);
+   if (stereo == 1)
+     si.private_bits = fr.get1Bit();
+   else
+     si.private_bits = fr.getBits(2);
+
+   for (ch=0; ch<stereo; ch++) {
+       MP3SideInfo::gr_info_s_t& gr_info = si.ch[ch].gr[0];
+
+       gr_info.part2_3_length = fr.getBits(12);
+       si.ch[ch].gr[1].part2_3_length = 0; /* to ensure granule 1 unused */
+
+       gr_info.big_values = fr.getBits(9);
+       gr_info.global_gain = fr.getBits(8);
+#if 0
+       gr_info.pow2gain = gainpow2+256 - gr_info.global_gain + powdiff;
+       if (ms_stereo) gr_info.pow2gain += 2;
+#endif
+       gr_info.scalefac_compress = fr.getBits(9);
+/* window-switching flag == 1 for block_Type != 0 .. and block-type == 0 -> win-sw-flag = 0 */
+       gr_info.window_switching_flag = fr.get1Bit();
+       if (gr_info.window_switching_flag) {
+         int i;
+         gr_info.block_type = fr.getBits(2);
+         gr_info.mixed_block_flag = fr.get1Bit();
+         gr_info.table_select[0] = fr.getBits(5);
+         gr_info.table_select[1] = fr.getBits(5);
+         /*
+          * table_select[2] not needed, because there is no region2,
+          * but to satisfy some verifications tools we set it either.
+          */
+         gr_info.table_select[2] = 0;
+         for (i=0;i<3;i++) {
+	   gr_info.subblock_gain[i] = fr.getBits(3);
+           gr_info.full_gain[i]
+	     = gr_info.pow2gain + ((gr_info.subblock_gain[i])<<3);
+	 }
+
+#ifdef DEBUG_ERRORS
+         if (gr_info.block_type == 0) {
+           fprintf(stderr,"Blocktype == 0 and window-switching == 1 not allowed.\n");
+         }
+#endif
+         /* region_count/start parameters are implicit in this case. */
+/* check this again! */
+         if (gr_info.block_type == 2)
+           gr_info.region1start = 36>>1;
+         else {
+           gr_info.region1start = 54>>1;
+         }
+         gr_info.region2start = 576>>1;
+       }
+       else
+       {
+         int i,r0c,r1c;
+         for (i=0; i<3; i++) {
+           gr_info.table_select[i] = fr.getBits(5);
+	 }
+         r0c = gr_info.region0_count = fr.getBits(4);
+         r1c = gr_info.region1_count = fr.getBits(3);
+         gr_info.region1start = bandInfo[sfreq].longIdx[r0c+1] >> 1 ;
+         gr_info.region2start = bandInfo[sfreq].longIdx[r0c+1+r1c+1] >> 1;
+         gr_info.block_type = 0;
+         gr_info.mixed_block_flag = 0;
+       }
+       gr_info.scalefac_scale = fr.get1Bit();
+       gr_info.count1table_select = fr.get1Bit();
+   }
+}
+
+
+#define         MPG_MD_JOINT_STEREO     1
+
+void MP3FrameParams::getSideInfo(MP3SideInfo& si) {
+  // First skip over the CRC if present:
+  if (hasCRC) getBits(16);
+
+  int single = -1;
+  int ms_stereo;
+  int sfreq = samplingFreqIndex;
+
+  if (stereo == 1) {
+    single = 0;
+  }
+
+  ms_stereo = (mode == MPG_MD_JOINT_STEREO) && (mode_ext & 0x2);
+
+  if (isMPEG2) {
+    getSideInfo2(*this, si, stereo, ms_stereo, sfreq, single);
+  } else {
+    getSideInfo1(*this, si, stereo, ms_stereo, sfreq, single);
+  }
+}
+
+static void putSideInfo1(BitVector& bv,
+			 MP3SideInfo const& si, Boolean isStereo) {
+  int ch, gr, i;
+  int stereo = isStereo ? 2 : 1;
+
+  bv.putBits(si.main_data_begin,9);
+  if (stereo == 1)
+    bv.putBits(si.private_bits, 5);
+  else
+    bv.putBits(si.private_bits, 3);
+
+  for (ch=0; ch<stereo; ch++) {
+    bv.putBits(si.ch[ch].gr[1].scfsi, 4);
+  }
+
+  for (gr=0; gr<2; gr++) {
+    for (ch=0; ch<stereo; ch++) {
+      MP3SideInfo::gr_info_s_t const& gr_info = si.ch[ch].gr[gr];
+
+      bv.putBits(gr_info.part2_3_length, 12);
+      bv.putBits(gr_info.big_values, 9);
+      bv.putBits(gr_info.global_gain, 8);
+      bv.putBits(gr_info.scalefac_compress, 4);
+      bv.put1Bit(gr_info.window_switching_flag);
+      if (gr_info.window_switching_flag) {
+	bv.putBits(gr_info.block_type, 2);
+	bv.put1Bit(gr_info.mixed_block_flag);
+	for (i=0; i<2; i++)
+	  bv.putBits(gr_info.table_select[i], 5);
+	for (i=0; i<3; i++)
+	  bv.putBits(gr_info.subblock_gain[i], 3);
+      }
+      else {
+	for (i=0; i<3; i++)
+	  bv.putBits(gr_info.table_select[i], 5);
+	bv.putBits(gr_info.region0_count, 4);
+	bv.putBits(gr_info.region1_count, 3);
+      }
+
+      bv.put1Bit(gr_info.preflag);
+      bv.put1Bit(gr_info.scalefac_scale);
+      bv.put1Bit(gr_info.count1table_select);
+    }
+  }
+}
+
+static void putSideInfo2(BitVector& bv,
+			 MP3SideInfo const& si, Boolean isStereo) {
+  int ch, i;
+  int stereo = isStereo ? 2 : 1;
+
+  bv.putBits(si.main_data_begin,8);
+  if (stereo == 1)
+    bv.put1Bit(si.private_bits);
+  else
+    bv.putBits(si.private_bits, 2);
+
+  for (ch=0; ch<stereo; ch++) {
+    MP3SideInfo::gr_info_s_t const& gr_info = si.ch[ch].gr[0];
+
+    bv.putBits(gr_info.part2_3_length, 12);
+    bv.putBits(gr_info.big_values, 9);
+    bv.putBits(gr_info.global_gain, 8);
+    bv.putBits(gr_info.scalefac_compress, 9);
+    bv.put1Bit(gr_info.window_switching_flag);
+    if (gr_info.window_switching_flag) {
+      bv.putBits(gr_info.block_type, 2);
+      bv.put1Bit(gr_info.mixed_block_flag);
+      for (i=0; i<2; i++)
+	bv.putBits(gr_info.table_select[i], 5);
+      for (i=0; i<3; i++)
+	bv.putBits(gr_info.subblock_gain[i], 3);
+    }
+    else {
+      for (i=0; i<3; i++)
+	bv.putBits(gr_info.table_select[i], 5);
+      bv.putBits(gr_info.region0_count, 4);
+      bv.putBits(gr_info.region1_count, 3);
+    }
+
+    bv.put1Bit(gr_info.scalefac_scale);
+    bv.put1Bit(gr_info.count1table_select);
+  }
+}
+
+static void PutMP3SideInfoIntoFrame(MP3SideInfo const& si,
+				    MP3FrameParams const& fr,
+				    unsigned char* framePtr) {
+  if (fr.hasCRC) framePtr += 2; // skip CRC
+
+  BitVector bv(framePtr, 0, 8*fr.sideInfoSize);
+
+  if (fr.isMPEG2) {
+    putSideInfo2(bv, si, fr.isStereo);
+  } else {
+    putSideInfo1(bv, si, fr.isStereo);
+  }
+}
+
+
+Boolean ZeroOutMP3SideInfo(unsigned char* framePtr, unsigned totFrameSize,
+                           unsigned newBackpointer) {
+  if (totFrameSize < 4) return False; // there's not enough data
+
+  MP3FrameParams fr;
+  fr.hdr =   ((unsigned)framePtr[0] << 24) | ((unsigned)framePtr[1] << 16)
+           | ((unsigned)framePtr[2] << 8) | (unsigned)framePtr[3];
+  fr.setParamsFromHeader();
+  fr.setBytePointer(framePtr + 4, totFrameSize - 4); // skip hdr
+
+  if (totFrameSize < 4 + fr.sideInfoSize) return False; // not enough data
+
+  MP3SideInfo si;
+  fr.getSideInfo(si);
+
+  si.main_data_begin = newBackpointer; /* backpointer */
+  /* set all four "part2_3_length" and "big_values" fields to zero: */
+  si.ch[0].gr[0].part2_3_length = si.ch[0].gr[0].big_values = 0;
+  si.ch[1].gr[0].part2_3_length = si.ch[1].gr[0].big_values = 0;
+  si.ch[0].gr[1].part2_3_length = si.ch[0].gr[1].big_values = 0;
+  si.ch[1].gr[1].part2_3_length = si.ch[1].gr[1].big_values = 0;
+
+  PutMP3SideInfoIntoFrame(si, fr, framePtr + 4);
+
+  return True;
+}
+
+
+static unsigned MP3BitrateToBitrateIndex(unsigned bitrate /* in kbps */,
+					 Boolean isMPEG2) {
+  for (unsigned i = 1; i < 15; ++i) {
+    if (live_tabsel[isMPEG2][2][i] >= bitrate)
+      return i;
+  }
+
+  // "bitrate" was larger than any possible, so return the largest possible:
+  return 14;
+}
+
+static void outputHeader(unsigned char* toPtr, unsigned hdr) {
+  toPtr[0] = (unsigned char)(hdr>>24);
+  toPtr[1] = (unsigned char)(hdr>>16);
+  toPtr[2] = (unsigned char)(hdr>>8);
+  toPtr[3] = (unsigned char)(hdr);
+}
+
+static void assignADUBackpointer(MP3FrameParams const& fr,
+				 unsigned aduSize,
+				 MP3SideInfo& sideInfo,
+				 unsigned& availableBytesForBackpointer) {
+  // Give the ADU as large a backpointer as possible:
+  unsigned maxBackpointerSize = fr.isMPEG2 ? 255 : 511;
+
+  unsigned backpointerSize = availableBytesForBackpointer;
+  if (backpointerSize > maxBackpointerSize) {
+    backpointerSize = maxBackpointerSize;
+  }
+
+  // Store the new backpointer now:
+  sideInfo.main_data_begin = backpointerSize;
+
+  // Figure out how many bytes are available for the *next* ADU's backpointer:
+  availableBytesForBackpointer
+    = backpointerSize + fr.frameSize - fr.sideInfoSize ;
+  if (availableBytesForBackpointer < aduSize) {
+    availableBytesForBackpointer = 0;
+  } else {
+    availableBytesForBackpointer -= aduSize;
+  }
+}
+
+unsigned TranscodeMP3ADU(unsigned char const* fromPtr, unsigned fromSize,
+                      unsigned toBitrate,
+		      unsigned char* toPtr, unsigned toMaxSize,
+		      unsigned& availableBytesForBackpointer) {
+  // Begin by parsing the input ADU's parameters:
+  unsigned hdr, inFrameSize, inSideInfoSize, backpointer, inAduSize;
+  MP3SideInfo sideInfo;
+  if (!GetADUInfoFromMP3Frame(fromPtr, fromSize,
+                              hdr, inFrameSize, sideInfo, inSideInfoSize,
+			      backpointer, inAduSize)) {
+    return 0;
+  }
+  fromPtr += (4+inSideInfoSize); // skip to 'main data'
+
+  // Alter the 4-byte MPEG header to reflect the output ADU:
+  // (different bitrate; mono; no CRC)
+  Boolean isMPEG2 = ((hdr&0x00080000) == 0);
+  unsigned toBitrateIndex = MP3BitrateToBitrateIndex(toBitrate, isMPEG2);
+  hdr &=~ 0xF000; hdr |= (toBitrateIndex<<12); // set bitrate index
+  hdr |= 0x10200; // turn on !error-prot and padding bits
+  hdr &=~ 0xC0; hdr |= 0xC0; // set mode to 3 (mono)
+
+  // Set up the rest of the parameters of the new ADU:
+  MP3FrameParams outFr;
+  outFr.hdr = hdr;
+  outFr.setParamsFromHeader();
+
+  // Figure out how big to make the output ADU:
+  unsigned inAveAduSize = inFrameSize - inSideInfoSize;
+  unsigned outAveAduSize = outFr.frameSize - outFr.sideInfoSize;
+  unsigned desiredOutAduSize /*=inAduSize*outAveAduSize/inAveAduSize*/
+    = (2*inAduSize*outAveAduSize + inAveAduSize)/(2*inAveAduSize);
+      // this rounds to the nearest integer
+
+  if (toMaxSize < (4 + outFr.sideInfoSize)) return 0;
+  unsigned maxOutAduSize = toMaxSize - (4 + outFr.sideInfoSize);
+  if (desiredOutAduSize > maxOutAduSize) {
+    desiredOutAduSize = maxOutAduSize;
+  }
+
+  // Figure out the new sizes of the various 'part23 lengths',
+  // and how much they are truncated:
+  unsigned part23Length0a, part23Length0aTruncation;
+  unsigned part23Length0b, part23Length0bTruncation;
+  unsigned part23Length1a, part23Length1aTruncation;
+  unsigned part23Length1b, part23Length1bTruncation;
+  unsigned numAduBits
+    = updateSideInfoSizes(sideInfo, outFr.isMPEG2,
+			  fromPtr, 8*desiredOutAduSize,
+			  part23Length0a, part23Length0aTruncation,
+			  part23Length0b, part23Length0bTruncation,
+			  part23Length1a, part23Length1aTruncation,
+			  part23Length1b, part23Length1bTruncation);
+#ifdef DEBUG
+fprintf(stderr, "shrinkage %d->%d [(%d,%d),(%d,%d)] (trunc: [(%d,%d),(%d,%d)]) {%d}\n", inAduSize, (numAduBits+7)/8,
+	      part23Length0a, part23Length0b, part23Length1a, part23Length1b,
+	      part23Length0aTruncation, part23Length0bTruncation,
+	      part23Length1aTruncation, part23Length1bTruncation,
+	      maxOutAduSize);
+#endif
+ unsigned actualOutAduSize = (numAduBits+7)/8;
+
+ // Give the new ADU an appropriate 'backpointer':
+ assignADUBackpointer(outFr, actualOutAduSize, sideInfo, availableBytesForBackpointer);
+
+ ///// Now output the new ADU:
+
+ // 4-byte header
+ outputHeader(toPtr, hdr); toPtr += 4;
+
+ // side info
+ PutMP3SideInfoIntoFrame(sideInfo, outFr, toPtr); toPtr += outFr.sideInfoSize;
+
+ // 'main data', using the new lengths
+ unsigned toBitOffset = 0;
+ unsigned fromBitOffset = 0;
+
+ /* rebuild portion 0a: */
+ memmove(toPtr, fromPtr, (part23Length0a+7)/8);
+ toBitOffset += part23Length0a;
+ fromBitOffset += part23Length0a + part23Length0aTruncation;
+
+ /* rebuild portion 0b: */
+ shiftBits(toPtr, toBitOffset, fromPtr, fromBitOffset, part23Length0b);
+ toBitOffset += part23Length0b;
+ fromBitOffset += part23Length0b + part23Length0bTruncation;
+
+ /* rebuild portion 1a: */
+ shiftBits(toPtr, toBitOffset, fromPtr, fromBitOffset, part23Length1a);
+ toBitOffset += part23Length1a;
+ fromBitOffset += part23Length1a + part23Length1aTruncation;
+
+ /* rebuild portion 1b: */
+ shiftBits(toPtr, toBitOffset, fromPtr, fromBitOffset, part23Length1b);
+ toBitOffset += part23Length1b;
+
+ /* zero out any remaining bits (probably unnecessary, but...) */
+ unsigned char const zero = '\0';
+ shiftBits(toPtr, toBitOffset, &zero, 0,
+	   actualOutAduSize*8 - numAduBits);
+
+ return 4 + outFr.sideInfoSize + actualOutAduSize;
+}
diff --git a/liveMedia/MP3Internals.hh b/liveMedia/MP3Internals.hh
new file mode 100644
index 0000000..6301af8
--- /dev/null
+++ b/liveMedia/MP3Internals.hh
@@ -0,0 +1,143 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP3 internal implementation details
+// C++ header
+
+#ifndef _MP3_INTERNALS_HH
+#define _MP3_INTERNALS_HH
+
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+#ifndef _BIT_VECTOR_HH
+#include "BitVector.hh"
+#endif
+
+typedef struct MP3SideInfo {
+  unsigned main_data_begin;
+  unsigned private_bits;
+  typedef struct gr_info_s {
+    int scfsi;
+    unsigned part2_3_length;
+    unsigned big_values;
+    unsigned global_gain;
+    unsigned scalefac_compress;
+    unsigned window_switching_flag;
+    unsigned block_type;
+    unsigned mixed_block_flag;
+    unsigned table_select[3];
+    unsigned region0_count;
+    unsigned region1_count;
+    unsigned subblock_gain[3];
+    unsigned maxband[3];
+    unsigned maxbandl;
+    unsigned maxb;
+    unsigned region1start;
+    unsigned region2start;
+    unsigned preflag;
+    unsigned scalefac_scale;
+    unsigned count1table_select;
+    double *full_gain[3];
+    double *pow2gain;
+  } gr_info_s_t;
+  struct {
+    gr_info_s_t gr[2];
+  } ch[2];
+} MP3SideInfo_t;
+
+#define SBLIMIT 32
+#define MAX_MP3_FRAME_SIZE 2500 /* also big enough for an 'ADU'ized frame */
+
+class MP3FrameParams {
+public:
+  MP3FrameParams();
+  ~MP3FrameParams();
+
+  // 4-byte MPEG header:
+  unsigned hdr;
+
+  // a buffer that can be used to hold the rest of the frame:
+  unsigned char frameBytes[MAX_MP3_FRAME_SIZE];
+
+  // public parameters derived from the header
+  void setParamsFromHeader(); // this sets them
+  Boolean isMPEG2;
+  unsigned layer; // currently only 3 is supported
+  unsigned bitrate; // in kbps
+  unsigned samplingFreq;
+  Boolean isStereo;
+  Boolean isFreeFormat;
+  unsigned frameSize; // doesn't include the initial 4-byte header
+  unsigned sideInfoSize;
+  Boolean hasCRC;
+
+  void setBytePointer(unsigned char const* restOfFrame,
+		      unsigned totNumBytes) {// called during setup
+    bv.setup((unsigned char*)restOfFrame, 0, 8*totNumBytes);
+  }
+
+  // other, public parameters used when parsing input (perhaps get rid of)
+  unsigned oldHdr, firstHdr;
+
+  // Extract (unpack) the side info from the frame into a struct:
+  void getSideInfo(MP3SideInfo& si);
+
+  // The bit pointer used for reading data from frame data
+  unsigned getBits(unsigned numBits) { return bv.getBits(numBits); }
+  unsigned get1Bit() { return bv.get1Bit(); }
+
+private:
+  BitVector bv;
+
+  // other, private parameters derived from the header
+  unsigned bitrateIndex;
+  unsigned samplingFreqIndex;
+  Boolean isMPEG2_5;
+  Boolean padding;
+  Boolean extension;
+  unsigned mode;
+  unsigned mode_ext;
+  Boolean copyright;
+  Boolean original;
+  unsigned emphasis;
+  unsigned stereo;
+
+private:
+  unsigned computeSideInfoSize();
+};
+
+unsigned ComputeFrameSize(unsigned bitrate, unsigned samplingFreq,
+			  Boolean usePadding, Boolean isMPEG2,
+			  unsigned char layer);
+
+Boolean GetADUInfoFromMP3Frame(unsigned char const* framePtr,
+			       unsigned totFrameSize,
+			       unsigned& hdr, unsigned& frameSize,
+			       MP3SideInfo& sideInfo, unsigned& sideInfoSize,
+			       unsigned& backpointer, unsigned& aduSize);
+
+Boolean ZeroOutMP3SideInfo(unsigned char* framePtr, unsigned totFrameSize,
+			   unsigned newBackpointer);
+
+unsigned TranscodeMP3ADU(unsigned char const* fromPtr, unsigned fromSize,
+		      unsigned toBitrate,
+		      unsigned char* toPtr, unsigned toMaxSize,
+		      unsigned& availableBytesForBackpointer);
+  // returns the size of the resulting ADU (0 on failure)
+
+#endif
diff --git a/liveMedia/MP3InternalsHuffman.cpp b/liveMedia/MP3InternalsHuffman.cpp
new file mode 100644
index 0000000..87b68ac
--- /dev/null
+++ b/liveMedia/MP3InternalsHuffman.cpp
@@ -0,0 +1,976 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP3 internal implementation details (Huffman encoding)
+// Implementation
+
+#include "MP3InternalsHuffman.hh"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+MP3HuffmanEncodingInfo
+::MP3HuffmanEncodingInfo(Boolean includeDecodedValues) {
+  if (includeDecodedValues) {
+    decodedValues = new unsigned[(SBLIMIT*SSLIMIT + 1)*4];
+  } else {
+    decodedValues = NULL;
+  }
+}
+
+MP3HuffmanEncodingInfo::~MP3HuffmanEncodingInfo() {
+  delete[] decodedValues;
+}
+
+// This is crufty old code that needs to be cleaned up #####
+
+static unsigned debugCount = 0; /* for debugging */
+
+#define TRUNC_FAVORa
+
+void updateSideInfoForHuffman(MP3SideInfo& sideInfo, Boolean isMPEG2,
+			      unsigned char const* mainDataPtr,
+			      unsigned p23L0, unsigned p23L1,
+			      unsigned& part23Length0a,
+			      unsigned& part23Length0aTruncation,
+			      unsigned& part23Length0b,
+			      unsigned& part23Length0bTruncation,
+			      unsigned& part23Length1a,
+			      unsigned& part23Length1aTruncation,
+			      unsigned& part23Length1b,
+			      unsigned& part23Length1bTruncation) {
+  int i, j;
+  unsigned sfLength, origTotABsize, adjustment;
+  MP3SideInfo::gr_info_s_t* gr;
+
+  /* First, Huffman-decode each part of the segment's main data,
+     to see at which bit-boundaries the samples appear:
+   */
+  MP3HuffmanEncodingInfo hei;
+
+  ++debugCount;
+#ifdef DEBUG
+  fprintf(stderr, "usifh-start: p23L0: %d, p23L1: %d\n", p23L0, p23L1);
+#endif
+
+  /* Process granule 0 */
+  {
+    gr = &(sideInfo.ch[0].gr[0]);
+    origTotABsize = gr->part2_3_length;
+
+    MP3HuffmanDecode(gr, isMPEG2, mainDataPtr, 0, origTotABsize, sfLength, hei);
+
+    /* Begin by computing new sizes for parts a & b (& their truncations) */
+#ifdef DEBUG
+    fprintf(stderr, "usifh-0: %d, %d:%d, %d:%d, %d:%d, %d:%d, %d:%d\n",
+	    hei.numSamples,
+	    sfLength/8, sfLength%8,
+	    hei.reg1Start/8, hei.reg1Start%8,
+	    hei.reg2Start/8, hei.reg2Start%8,
+	    hei.bigvalStart/8, hei.bigvalStart%8,
+	    origTotABsize/8, origTotABsize%8);
+#endif
+    if (p23L0 < sfLength) {
+      /* We can't use this, so give it all to the next granule: */
+      p23L1 += p23L0;
+      p23L0 = 0;
+    }
+
+    part23Length0a = hei.bigvalStart;
+    part23Length0b = origTotABsize - hei.bigvalStart;
+    part23Length0aTruncation = part23Length0bTruncation = 0;
+    if (origTotABsize > p23L0) {
+      /* We need to shorten one or both of fields a & b */
+      unsigned truncation = origTotABsize - p23L0;
+#ifdef TRUNC_FAIRLY
+      part23Length0aTruncation	= (truncation*(part23Length0a-sfLength))
+	                          /(origTotABsize-sfLength);
+      part23Length0bTruncation = truncation - part23Length0aTruncation;
+#endif
+#ifdef TRUNC_FAVORa
+      part23Length0bTruncation
+	= (truncation > part23Length0b) ? part23Length0b : truncation;
+      part23Length0aTruncation = truncation - part23Length0bTruncation;
+#endif
+#ifdef TRUNC_FAVORb
+      part23Length0aTruncation	= (truncation > part23Length0a-sfLength)
+	? (part23Length0a-sfLength) : truncation;
+      part23Length0bTruncation = truncation - part23Length0aTruncation;
+#endif
+    }
+    /* ASSERT:  part23Length0xTruncation <= part23Length0x */
+    part23Length0a -= part23Length0aTruncation;
+    part23Length0b -= part23Length0bTruncation;
+#ifdef DEBUG
+    fprintf(stderr, "usifh-0: interim sizes: %d (%d), %d (%d)\n",
+	    part23Length0a, part23Length0aTruncation,
+	    part23Length0b, part23Length0bTruncation);
+#endif
+
+    /* Adjust these new lengths so they end on sample bit boundaries: */
+    for (i = 0; i < (int)hei.numSamples; ++i) {
+      if (hei.allBitOffsets[i] == part23Length0a) break;
+      else if (hei.allBitOffsets[i] > part23Length0a) {--i; break;}
+    }
+    if (i < 0) { /* should happen only if we couldn't fit sfLength */
+      i = 0; adjustment = 0;
+    } else {
+      adjustment = part23Length0a - hei.allBitOffsets[i];
+    }
+#ifdef DEBUG
+    fprintf(stderr, "%d usifh-0: adjustment 1: %d\n", debugCount, adjustment);
+#endif
+    part23Length0a -= adjustment;
+    part23Length0aTruncation += adjustment;
+    /* Assign the bits we just shaved to field b and granule 1: */
+    if (part23Length0bTruncation < adjustment) {
+      p23L1 += (adjustment - part23Length0bTruncation);
+      adjustment = part23Length0bTruncation;
+    }
+    part23Length0b += adjustment;
+    part23Length0bTruncation -= adjustment;
+    for (j = i; j < (int)hei.numSamples; ++j) {
+      if (hei.allBitOffsets[j]
+	  == part23Length0a + part23Length0aTruncation + part23Length0b)
+	break;
+      else if (hei.allBitOffsets[j]
+	  > part23Length0a + part23Length0aTruncation + part23Length0b)
+	{--j; break;}
+    }
+    if (j < 0) { /* should happen only if we couldn't fit sfLength */
+      j = 0; adjustment = 0;
+    } else {
+      adjustment = part23Length0a+part23Length0aTruncation+part23Length0b
+                   - hei.allBitOffsets[j];
+    }
+#ifdef DEBUG
+    fprintf(stderr, "%d usifh-0: adjustment 2: %d\n", debugCount, adjustment);
+#endif
+    if (adjustment > part23Length0b) adjustment = part23Length0b; /*sanity*/
+    part23Length0b -= adjustment;
+    part23Length0bTruncation += adjustment;
+    /* Assign the bits we just shaved to granule 1 */
+    p23L1 += adjustment;
+
+    if (part23Length0aTruncation > 0) {
+      /* Change the granule's 'big_values' field to reflect the truncation */
+      gr->big_values = i;
+    }
+  }
+
+  /* Process granule 1 (MPEG-1 only) */
+
+  if (isMPEG2) {
+    part23Length1a = part23Length1b = 0;
+    part23Length1aTruncation = part23Length1bTruncation = 0;
+  } else {
+    unsigned granule1Offset
+      = origTotABsize + sideInfo.ch[1].gr[0].part2_3_length;
+
+    gr = &(sideInfo.ch[0].gr[1]);
+    origTotABsize = gr->part2_3_length;
+
+    MP3HuffmanDecode(gr, isMPEG2, mainDataPtr, granule1Offset,
+		     origTotABsize, sfLength, hei);
+
+    /* Begin by computing new sizes for parts a & b (& their truncations) */
+#ifdef DEBUG
+    fprintf(stderr, "usifh-1: %d, %d:%d, %d:%d, %d:%d, %d:%d, %d:%d\n",
+	    hei.numSamples,
+	    sfLength/8, sfLength%8,
+	    hei.reg1Start/8, hei.reg1Start%8,
+	    hei.reg2Start/8, hei.reg2Start%8,
+	    hei.bigvalStart/8, hei.bigvalStart%8,
+	    origTotABsize/8, origTotABsize%8);
+#endif
+    if (p23L1 < sfLength) {
+      /* We can't use this, so give up on this granule: */
+      p23L1 = 0;
+    }
+
+    part23Length1a = hei.bigvalStart;
+    part23Length1b = origTotABsize - hei.bigvalStart;
+    part23Length1aTruncation = part23Length1bTruncation = 0;
+    if (origTotABsize > p23L1) {
+      /* We need to shorten one or both of fields a & b */
+      unsigned truncation = origTotABsize - p23L1;
+#ifdef TRUNC_FAIRLY
+      part23Length1aTruncation	= (truncation*(part23Length1a-sfLength))
+	                          /(origTotABsize-sfLength);
+      part23Length1bTruncation = truncation - part23Length1aTruncation;
+#endif
+#ifdef TRUNC_FAVORa
+      part23Length1bTruncation
+	= (truncation > part23Length1b) ? part23Length1b : truncation;
+      part23Length1aTruncation = truncation - part23Length1bTruncation;
+#endif
+#ifdef TRUNC_FAVORb
+      part23Length1aTruncation	= (truncation > part23Length1a-sfLength)
+	? (part23Length1a-sfLength) : truncation;
+      part23Length1bTruncation = truncation - part23Length1aTruncation;
+#endif
+    }
+    /* ASSERT:  part23Length1xTruncation <= part23Length1x */
+    part23Length1a -= part23Length1aTruncation;
+    part23Length1b -= part23Length1bTruncation;
+#ifdef DEBUG
+    fprintf(stderr, "usifh-1: interim sizes: %d (%d), %d (%d)\n",
+	    part23Length1a, part23Length1aTruncation,
+	    part23Length1b, part23Length1bTruncation);
+#endif
+
+    /* Adjust these new lengths so they end on sample bit boundaries: */
+    for (i = 0; i < (int)hei.numSamples; ++i) {
+      if (hei.allBitOffsets[i] == part23Length1a) break;
+      else if (hei.allBitOffsets[i] > part23Length1a) {--i; break;}
+    }
+    if (i < 0) { /* should happen only if we couldn't fit sfLength */
+      i = 0; adjustment = 0;
+    } else {
+      adjustment = part23Length1a - hei.allBitOffsets[i];
+    }
+#ifdef DEBUG
+    fprintf(stderr, "%d usifh-1: adjustment 0: %d\n", debugCount, adjustment);
+#endif
+    part23Length1a -= adjustment;
+    part23Length1aTruncation += adjustment;
+    /* Assign the bits we just shaved to field b: */
+    if (part23Length1bTruncation < adjustment) {
+      adjustment = part23Length1bTruncation;
+    }
+    part23Length1b += adjustment;
+    part23Length1bTruncation -= adjustment;
+    for (j = i; j < (int)hei.numSamples; ++j) {
+      if (hei.allBitOffsets[j]
+	  == part23Length1a + part23Length1aTruncation + part23Length1b)
+	break;
+      else if (hei.allBitOffsets[j]
+	  > part23Length1a + part23Length1aTruncation + part23Length1b)
+	{--j; break;}
+    }
+    if (j < 0) { /* should happen only if we couldn't fit sfLength */
+      j = 0; adjustment = 0;
+    } else {
+      adjustment = part23Length1a+part23Length1aTruncation+part23Length1b
+                   - hei.allBitOffsets[j];
+    }
+#ifdef DEBUG
+    fprintf(stderr, "%d usifh-1: adjustment 1: %d\n", debugCount, adjustment);
+#endif
+    if (adjustment > part23Length1b) adjustment = part23Length1b; /*sanity*/
+    part23Length1b -= adjustment;
+    part23Length1bTruncation += adjustment;
+
+    if (part23Length1aTruncation > 0) {
+      /* Change the granule's 'big_values' field to reflect the truncation */
+      gr->big_values = i;
+    }
+  }
+#ifdef DEBUG
+  fprintf(stderr, "usifh-end, new vals: %d (%d), %d (%d), %d (%d), %d (%d)\n",
+	  part23Length0a, part23Length0aTruncation,
+	  part23Length0b, part23Length0bTruncation,
+	  part23Length1a, part23Length1aTruncation,
+	  part23Length1b, part23Length1bTruncation);
+#endif
+}
+
+static void rsf_getline(char* line, unsigned max, unsigned char**fi) {
+  unsigned i;
+  for (i = 0; i < max; ++i) {
+    line[i] = *(*fi)++;
+    if (line[i] == '\n') {
+      line[i++] = '\0';
+      return;
+    }
+  }
+  line[i] = '\0';
+}
+
+static void rsfscanf(unsigned char **fi, unsigned int* v) {
+  while (sscanf((char*)*fi, "%x", v) == 0) {
+    /* skip past the next '\0' */
+    while (*(*fi)++ != '\0') {}
+  }
+
+  /* skip past any white-space before the value: */
+  while (*(*fi) <= ' ') ++(*fi);
+
+  /* skip past the value: */
+  while (*(*fi) > ' ') ++(*fi);
+}
+
+#define HUFFBITS unsigned long int
+#define SIZEOF_HUFFBITS 4
+#define HTN     34
+#define MXOFF   250
+
+struct huffcodetab {
+  char tablename[3];	/*string, containing table_description	*/
+  unsigned int xlen; 	/*max. x-index+			      	*/
+  unsigned int ylen;	/*max. y-index+				*/
+  unsigned int linbits; /*number of linbits			*/
+  unsigned int linmax;	/*max number to be stored in linbits	*/
+  int ref;		/*a positive value indicates a reference*/
+  HUFFBITS *table;	/*pointer to array[xlen][ylen]		*/
+  unsigned char *hlen;	/*pointer to array[xlen][ylen]		*/
+  unsigned char(*val)[2];/*decoder tree				*/
+  unsigned int treelen;	/*length of decoder tree		*/
+};
+
+static struct huffcodetab rsf_ht[HTN]; // array of all huffcodetable headers
+				/* 0..31 Huffman code table 0..31	*/
+				/* 32,33 count1-tables			*/
+
+/* read the huffman decoder table */
+static int read_decoder_table(unsigned char* fi) {
+  int n,i,nn,t;
+  unsigned int v0,v1;
+  char command[100],line[100];
+  for (n=0;n<HTN;n++) {
+    rsf_ht[n].table = NULL;
+    rsf_ht[n].hlen = NULL;
+
+    /* .table number treelen xlen ylen linbits */
+    do {
+      rsf_getline(line,99,&fi);
+    } while ((line[0] == '#') || (line[0] < ' '));
+
+    sscanf(line,"%s %s %u %u %u %u",command,rsf_ht[n].tablename,
+           &rsf_ht[n].treelen, &rsf_ht[n].xlen, &rsf_ht[n].ylen, &rsf_ht[n].linbits);
+    if (strcmp(command,".end")==0)
+      return n;
+    else if (strcmp(command,".table")!=0) {
+#ifdef DEBUG
+      fprintf(stderr,"huffman table %u data corrupted\n",n);
+#endif
+      return -1;
+    }
+    rsf_ht[n].linmax = (1<<rsf_ht[n].linbits)-1;
+
+    sscanf(rsf_ht[n].tablename,"%u",&nn);
+    if (nn != n) {
+#ifdef DEBUG
+      fprintf(stderr,"wrong table number %u\n",n);
+#endif
+      return(-2);
+    }
+    do {
+      rsf_getline(line,99,&fi);
+    } while ((line[0] == '#') || (line[0] < ' '));
+
+    sscanf(line,"%s %u",command,&t);
+    if (strcmp(command,".reference")==0) {
+      rsf_ht[n].ref   = t;
+      rsf_ht[n].val   = rsf_ht[t].val;
+      rsf_ht[n].treelen  = rsf_ht[t].treelen;
+      if ( (rsf_ht[n].xlen != rsf_ht[t].xlen) ||
+           (rsf_ht[n].ylen != rsf_ht[t].ylen)  ) {
+#ifdef DEBUG
+        fprintf(stderr,"wrong table %u reference\n",n);
+#endif
+        return (-3);
+      };
+      while ((line[0] == '#') || (line[0] < ' ') ) {
+        rsf_getline(line,99,&fi);
+      }
+    }
+    else if (strcmp(command,".treedata")==0) {
+      rsf_ht[n].ref  = -1;
+      rsf_ht[n].val = (unsigned char (*)[2])
+        new unsigned char[2*(rsf_ht[n].treelen)];
+      if ((rsf_ht[n].val == NULL) && ( rsf_ht[n].treelen != 0 )){
+#ifdef DEBUG
+    	fprintf(stderr, "heaperror at table %d\n",n);
+#endif
+	return -1;
+      }
+      for (i=0;(unsigned)i<rsf_ht[n].treelen; i++) {
+        rsfscanf(&fi, &v0);
+        rsfscanf(&fi, &v1);
+/*replaces        fscanf(fi,"%x %x",&v0, &v1);*/
+        rsf_ht[n].val[i][0]=(unsigned char)v0;
+        rsf_ht[n].val[i][1]=(unsigned char)v1;
+      }
+      rsf_getline(line,99,&fi); /* read the rest of the line */
+    }
+    else {
+#ifdef DEBUG
+      fprintf(stderr,"huffman decodertable error at table %d\n",n);
+#endif
+    }
+  }
+  return n;
+}
+
+static void initialize_huffman() {
+  static Boolean huffman_initialized = False;
+
+   if (huffman_initialized) return;
+
+   if (read_decoder_table(huffdec) != HTN) {
+#ifdef DEBUG
+      fprintf(stderr,"decoder table read error\n");
+#endif
+      return;
+      }
+   huffman_initialized = True;
+}
+
+static unsigned char const slen[2][16] = {
+  {0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4},
+  {0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3}
+};
+
+static unsigned char const stab[3][6][4] = {
+  { { 6, 5, 5,5 } , { 6, 5, 7,3 } , { 11,10,0,0} ,
+    { 7, 7, 7,0 } , { 6, 6, 6,3 } , {  8, 8,5,0} } ,
+  { { 9, 9, 9,9 } , { 9, 9,12,6 } , { 18,18,0,0} ,
+    {12,12,12,0 } , {12, 9, 9,6 } , { 15,12,9,0} } ,
+  { { 6, 9, 9,9 } , { 6, 9,12,6 } , { 15,18,0,0} ,
+    { 6,15,12,0 } , { 6,12, 9,6 } , {  6,18,9,0} }
+};
+
+static unsigned rsf_get_scale_factors_1(MP3SideInfo::gr_info_s_t *gr_info) {
+   int numbits;
+   int num0 = slen[0][gr_info->scalefac_compress];
+   int num1 = slen[1][gr_info->scalefac_compress];
+
+    if (gr_info->block_type == 2)
+    {
+      numbits = (num0 + num1) * 18;
+
+      if (gr_info->mixed_block_flag) {
+         numbits -= num0; /* num0 * 17 + num1 * 18 */
+      }
+    }
+    else
+    {
+      int scfsi = gr_info->scfsi;
+
+      if(scfsi < 0) { /* scfsi < 0 => granule == 0 */
+         numbits = (num0 + num1) * 10 + num0;
+      }
+      else {
+        numbits = 0;
+        if(!(scfsi & 0x8)) {
+          numbits += num0 * 6;
+        }
+        else {
+        }
+
+        if(!(scfsi & 0x4)) {
+          numbits += num0 * 5;
+        }
+        else {
+        }
+
+        if(!(scfsi & 0x2)) {
+          numbits += num1 * 5;
+        }
+        else {
+        }
+
+        if(!(scfsi & 0x1)) {
+          numbits += num1 * 5;
+        }
+        else {
+        }
+      }
+    }
+
+    return numbits;
+}
+
+extern unsigned n_slen2[];
+extern unsigned i_slen2[];
+
+static unsigned rsf_get_scale_factors_2(MP3SideInfo::gr_info_s_t *gr_info) {
+  unsigned char const* pnt;
+  int i;
+  unsigned int slen;
+  int n = 0;
+  int numbits = 0;
+
+  slen = n_slen2[gr_info->scalefac_compress];
+
+  gr_info->preflag = (slen>>15) & 0x1;
+
+  n = 0;
+  if( gr_info->block_type == 2 ) {
+    n++;
+    if(gr_info->mixed_block_flag)
+      n++;
+  }
+
+  pnt = stab[n][(slen>>12)&0x7];
+
+  for(i=0;i<4;i++) {
+    int num = slen & 0x7;
+    slen >>= 3;
+    numbits += pnt[i] * num;
+  }
+
+  return numbits;
+}
+
+static unsigned getScaleFactorsLength(MP3SideInfo::gr_info_s_t* gr,
+				      Boolean isMPEG2) {
+  return isMPEG2 ? rsf_get_scale_factors_2(gr)
+                 : rsf_get_scale_factors_1(gr);
+}
+
+static int rsf_huffman_decoder(BitVector& bv,
+			       struct huffcodetab const* h,
+			       int* x, int* y, int* v, int* w); // forward
+
+void MP3HuffmanDecode(MP3SideInfo::gr_info_s_t* gr, Boolean isMPEG2,
+		      unsigned char const* fromBasePtr,
+		      unsigned fromBitOffset, unsigned fromLength,
+		      unsigned& scaleFactorsLength,
+		      MP3HuffmanEncodingInfo& hei) {
+   unsigned i;
+   int x, y, v, w;
+   struct huffcodetab *h;
+   BitVector bv((unsigned char*)fromBasePtr, fromBitOffset, fromLength);
+
+   /* Compute the size of the scale factors (& also advance bv): */
+   scaleFactorsLength = getScaleFactorsLength(gr, isMPEG2);
+   bv.skipBits(scaleFactorsLength);
+
+   initialize_huffman();
+
+   hei.reg1Start = hei.reg2Start = hei.numSamples = 0;
+
+   /* Read bigvalues area. */
+   if (gr->big_values < gr->region1start + gr->region2start) {
+     gr->big_values = gr->region1start + gr->region2start; /* sanity check */
+   }
+   for (i = 0; i < gr->big_values; ++i) {
+     if (i < gr->region1start) {
+       /* in region 0 */
+       h = &rsf_ht[gr->table_select[0]];
+     } else if (i < gr->region2start) {
+       /* in region 1 */
+       h = &rsf_ht[gr->table_select[1]];
+       if (hei.reg1Start == 0) {
+	 hei.reg1Start = bv.curBitIndex();
+       }
+     } else {
+       /* in region 2 */
+       h = &rsf_ht[gr->table_select[2]];
+       if (hei.reg2Start == 0) {
+	 hei.reg2Start = bv.curBitIndex();
+       }
+     }
+
+     hei.allBitOffsets[i] = bv.curBitIndex();
+     rsf_huffman_decoder(bv, h, &x, &y, &v, &w);
+     if (hei.decodedValues != NULL) {
+       // Record the decoded values:
+       unsigned* ptr = &hei.decodedValues[4*i];
+       ptr[0] = x; ptr[1] = y; ptr[2] = v; ptr[3] = w;
+     }
+   }
+   hei.bigvalStart = bv.curBitIndex();
+
+   /* Read count1 area. */
+   h = &rsf_ht[gr->count1table_select+32];
+   while (bv.curBitIndex() < bv.totNumBits() &&  i < SSLIMIT*SBLIMIT) {
+     hei.allBitOffsets[i] = bv.curBitIndex();
+     rsf_huffman_decoder(bv, h, &x, &y, &v, &w);
+     if (hei.decodedValues != NULL) {
+       // Record the decoded values:
+       unsigned* ptr = &hei.decodedValues[4*i];
+       ptr[0] = x; ptr[1] = y; ptr[2] = v; ptr[3] = w;
+     }
+     ++i;
+   }
+
+   hei.allBitOffsets[i] = bv.curBitIndex();
+   hei.numSamples = i;
+}
+
+HUFFBITS dmask = 1 << (SIZEOF_HUFFBITS*8-1);
+unsigned int hs = SIZEOF_HUFFBITS*8;
+
+/* do the huffman-decoding 						*/
+static int rsf_huffman_decoder(BitVector& bv,
+		struct huffcodetab const* h, // ptr to huffman code record
+			/* unsigned */ int *x, // returns decoded x value
+			/* unsigned */ int *y,  // returns decoded y value
+			       int* v, int* w) {
+  HUFFBITS level;
+  unsigned point = 0;
+  int error = 1;
+  level     = dmask;
+  *x = *y = *v = *w = 0;
+  if (h->val == NULL) return 2;
+
+  /* table 0 needs no bits */
+  if (h->treelen == 0) return 0;
+
+  /* Lookup in Huffman table. */
+
+  do {
+    if (h->val[point][0]==0) {   /*end of tree*/
+      *x = h->val[point][1] >> 4;
+      *y = h->val[point][1] & 0xf;
+
+      error = 0;
+      break;
+    }
+    if (bv.get1Bit()) {
+      while (h->val[point][1] >= MXOFF) point += h->val[point][1];
+      point += h->val[point][1];
+    }
+    else {
+      while (h->val[point][0] >= MXOFF) point += h->val[point][0];
+      point += h->val[point][0];
+    }
+    level >>= 1;
+  } while (level  || (point < h->treelen) );
+/////  } while (level  || (point < rsf_ht->treelen) );
+
+  /* Check for error. */
+
+  if (error) { /* set x and y to a medium value as a simple concealment */
+    printf("Illegal Huffman code in data.\n");
+    *x = ((h->xlen-1) << 1);
+    *y = ((h->ylen-1) << 1);
+  }
+
+  /* Process sign encodings for quadruples tables. */
+
+  if (h->tablename[0] == '3'
+      && (h->tablename[1] == '2' || h->tablename[1] == '3')) {
+     *v = (*y>>3) & 1;
+     *w = (*y>>2) & 1;
+     *x = (*y>>1) & 1;
+     *y = *y & 1;
+
+     if (*v)
+        if (bv.get1Bit() == 1) *v = -*v;
+     if (*w)
+        if (bv.get1Bit() == 1) *w = -*w;
+     if (*x)
+        if (bv.get1Bit() == 1) *x = -*x;
+     if (*y)
+        if (bv.get1Bit() == 1) *y = -*y;
+     }
+
+  /* Process sign and escape encodings for dual tables. */
+
+  else {
+     if (h->linbits)
+       if ((h->xlen-1) == (unsigned)*x)
+         *x += bv.getBits(h->linbits);
+     if (*x)
+        if (bv.get1Bit() == 1) *x = -*x;
+     if (h->linbits)
+       if ((h->ylen-1) == (unsigned)*y)
+         *y += bv.getBits(h->linbits);
+     if (*y)
+        if (bv.get1Bit() == 1) *y = -*y;
+  }
+
+  return error;
+}
+
+#ifdef DO_HUFFMAN_ENCODING
+inline int getNextSample(unsigned char const*& fromPtr) {
+  int sample
+#ifdef FOUR_BYTE_SAMPLES
+    = (fromPtr[0]<<24) | (fromPtr[1]<<16) | (fromPtr[2]<<8) | fromPtr[3];
+#else
+#ifdef TWO_BYTE_SAMPLES
+    = (fromPtr[0]<<8) | fromPtr[1];
+#else
+    // ONE_BYTE_SAMPLES
+    = fromPtr[0];
+#endif
+#endif
+  fromPtr += BYTES_PER_SAMPLE_VALUE;
+  return sample;
+}
+
+static void rsf_huffman_encoder(BitVector& bv,
+				struct huffcodetab* h,
+				int x, int y, int v, int w); // forward
+
+unsigned MP3HuffmanEncode(MP3SideInfo::gr_info_s_t const* gr,
+			  unsigned char const* fromPtr,
+			  unsigned char* toPtr, unsigned toBitOffset,
+			  unsigned numHuffBits) {
+   unsigned i;
+   struct huffcodetab *h;
+   int x, y, v, w;
+   BitVector bv(toPtr, toBitOffset, numHuffBits);
+
+   initialize_huffman();
+
+   // Encode big_values area:
+   unsigned big_values = gr->big_values;
+   if (big_values < gr->region1start + gr->region2start) {
+     big_values = gr->region1start + gr->region2start; /* sanity check */
+   }
+   for (i = 0; i < big_values; ++i) {
+     if (i < gr->region1start) {
+       /* in region 0 */
+       h = &rsf_ht[gr->table_select[0]];
+     } else if (i < gr->region2start) {
+       /* in region 1 */
+       h = &rsf_ht[gr->table_select[1]];
+     } else {
+       /* in region 2 */
+       h = &rsf_ht[gr->table_select[2]];
+     }
+
+     x = getNextSample(fromPtr);
+     y = getNextSample(fromPtr);
+     v = getNextSample(fromPtr);
+     w = getNextSample(fromPtr);
+     rsf_huffman_encoder(bv, h, x, y, v, w);
+   }
+
+   // Encode count1 area:
+   h = &rsf_ht[gr->count1table_select+32];
+   while (bv.curBitIndex() < bv.totNumBits() &&  i < SSLIMIT*SBLIMIT) {
+     x = getNextSample(fromPtr);
+     y = getNextSample(fromPtr);
+     v = getNextSample(fromPtr);
+     w = getNextSample(fromPtr);
+     rsf_huffman_encoder(bv, h, x, y, v, w);
+     ++i;
+   }
+
+   return i;
+}
+
+static Boolean lookupHuffmanTableEntry(struct huffcodetab const* h,
+				       HUFFBITS bits, unsigned bitsLength,
+				       unsigned char& xy) {
+  unsigned point = 0;
+  unsigned mask = 1;
+  unsigned numBitsTestedSoFar = 0;
+  do {
+    if (h->val[point][0]==0) { // end of tree
+      xy = h->val[point][1];
+      if (h->hlen[xy] == 0) { // this entry hasn't already been used
+	h->table[xy] = bits;
+	h->hlen[xy] = bitsLength;
+	return True;
+      } else { // this entry has already been seen
+	return False;
+      }
+    }
+
+    if (numBitsTestedSoFar++ == bitsLength) {
+      // We don't yet have enough bits for this prefix
+      return False;
+    }
+    if (bits&mask) {
+      while (h->val[point][1] >= MXOFF) point += h->val[point][1];
+      point += h->val[point][1];
+    } else {
+      while (h->val[point][0] >= MXOFF) point += h->val[point][0];
+      point += h->val[point][0];
+    }
+    mask <<= 1;
+  } while (mask || (point < h->treelen));
+
+  return False;
+}
+
+static void buildHuffmanEncodingTable(struct huffcodetab* h) {
+  h->table = new unsigned long[256];
+  h->hlen = new unsigned char[256];
+  if (h->table == NULL || h->hlen == NULL) { h->table = NULL; return; }
+  for (unsigned i = 0; i < 256; ++i) {
+    h->table[i] = 0; h->hlen[i] = 0;
+  }
+
+  // Look up entries for each possible bit sequence length:
+  unsigned maxNumEntries = h->xlen * h->ylen;
+  unsigned numEntries = 0;
+  unsigned powerOf2 = 1;
+  for (unsigned bitsLength = 1;
+       bitsLength <= 8*SIZEOF_HUFFBITS; ++bitsLength) {
+    powerOf2 *= 2;
+    for (HUFFBITS bits = 0; bits < powerOf2; ++bits) {
+      // Find the table value - if any - for 'bits' (length 'bitsLength'):
+      unsigned char xy;
+      if (lookupHuffmanTableEntry(h, bits, bitsLength, xy)) {
+	++numEntries;
+	if (numEntries == maxNumEntries) return; // we're done
+      }
+    }
+  }
+#ifdef DEBUG
+  fprintf(stderr, "Didn't find enough entries!\n"); // shouldn't happen
+#endif
+}
+
+static void lookupXYandPutBits(BitVector& bv, struct huffcodetab const* h,
+			       unsigned char xy) {
+  HUFFBITS bits = h->table[xy];
+  unsigned bitsLength = h->hlen[xy];
+
+  // Note that "bits" is in reverse order, so read them from right-to-left:
+  while (bitsLength-- > 0) {
+    bv.put1Bit(bits&0x00000001);
+    bits >>= 1;
+  }
+}
+
+static void putLinbits(BitVector& bv, struct huffcodetab const* h,
+		       HUFFBITS bits) {
+  bv.putBits(bits, h->linbits);
+}
+
+static void rsf_huffman_encoder(BitVector& bv,
+				struct huffcodetab* h,
+				int x, int y, int v, int w) {
+  if (h->val == NULL) return;
+
+  /* table 0 produces no bits */
+  if (h->treelen == 0) return;
+
+  if (h->table == NULL) {
+    // We haven't yet built the encoding array for this table; do it now:
+    buildHuffmanEncodingTable(h);
+    if (h->table == NULL) return;
+  }
+
+  Boolean xIsNeg = False, yIsNeg = False, vIsNeg = False, wIsNeg = False;
+  unsigned char xy;
+
+#ifdef FOUR_BYTE_SAMPLES
+#else
+#ifdef TWO_BYTE_SAMPLES
+  // Convert 2-byte negative numbers to their 4-byte equivalents:
+  if (x&0x8000) x |= 0xFFFF0000;
+  if (y&0x8000) y |= 0xFFFF0000;
+  if (v&0x8000) v |= 0xFFFF0000;
+  if (w&0x8000) w |= 0xFFFF0000;
+#else
+  // ONE_BYTE_SAMPLES
+  // Convert 1-byte negative numbers to their 4-byte equivalents:
+  if (x&0x80) x |= 0xFFFFFF00;
+  if (y&0x80) y |= 0xFFFFFF00;
+  if (v&0x80) v |= 0xFFFFFF00;
+  if (w&0x80) w |= 0xFFFFFF00;
+#endif
+#endif
+
+  if (h->tablename[0] == '3'
+      && (h->tablename[1] == '2' || h->tablename[1] == '3')) {// quad tables
+    if (x < 0) { xIsNeg = True; x = -x; }
+    if (y < 0) { yIsNeg = True; y = -y; }
+    if (v < 0) { vIsNeg = True; v = -v; }
+    if (w < 0) { wIsNeg = True; w = -w; }
+
+    // Sanity check: x,y,v,w must all be 0 or 1:
+    if (x>1 || y>1 || v>1 || w>1) {
+#ifdef DEBUG
+      fprintf(stderr, "rsf_huffman_encoder quad sanity check fails: %x,%x,%x,%x\n", x, y, v, w);
+#endif
+    }
+
+    xy = (v<<3)|(w<<2)|(x<<1)|y;
+    lookupXYandPutBits(bv, h, xy);
+
+    if (v) bv.put1Bit(vIsNeg);
+    if (w) bv.put1Bit(wIsNeg);
+    if (x) bv.put1Bit(xIsNeg);
+    if (y) bv.put1Bit(yIsNeg);
+  } else { // dual tables
+    // Sanity check: v and w must be 0:
+    if (v != 0 || w != 0) {
+#ifdef DEBUG
+      fprintf(stderr, "rsf_huffman_encoder dual sanity check 1 fails: %x,%x,%x,%x\n", x, y, v, w);
+#endif
+    }
+
+    if (x < 0) { xIsNeg = True; x = -x; }
+    if (y < 0) { yIsNeg = True; y = -y; }
+
+    // Sanity check: x and y must be <= 255:
+    if (x > 255 || y > 255) {
+#ifdef DEBUG
+      fprintf(stderr, "rsf_huffman_encoder dual sanity check 2 fails: %x,%x,%x,%x\n", x, y, v, w);
+#endif
+    }
+
+    int xl1 = h->xlen-1;
+    int yl1 = h->ylen-1;
+    unsigned linbitsX = 0; unsigned linbitsY = 0;
+
+    if (((x < xl1) || (xl1 == 0)) && (y < yl1)) {
+      // normal case
+      xy = (x<<4)|y;
+      lookupXYandPutBits(bv, h, xy);
+      if (x) bv.put1Bit(xIsNeg);
+      if (y) bv.put1Bit(yIsNeg);
+    } else if (x >= xl1) {
+      linbitsX = (unsigned)(x - xl1);
+      if (linbitsX > h->linmax) {
+#ifdef DEBUG
+	fprintf(stderr,"warning: Huffman X table overflow\n");
+#endif
+	linbitsX = h->linmax;
+      };
+
+      if (y >= yl1) {
+	xy = (xl1<<4)|yl1;
+	lookupXYandPutBits(bv, h, xy);
+	linbitsY = (unsigned)(y - yl1);
+	if (linbitsY > h->linmax) {
+#ifdef DEBUG
+	  fprintf(stderr,"warning: Huffman Y table overflow\n");
+#endif
+	  linbitsY = h->linmax;
+	};
+
+	if (h->linbits) putLinbits(bv, h, linbitsX);
+	if (x) bv.put1Bit(xIsNeg);
+	if (h->linbits) putLinbits(bv, h, linbitsY);
+	if (y) bv.put1Bit(yIsNeg);
+      } else { /* x >= h->xlen, y < h->ylen */
+	xy = (xl1<<4)|y;
+	lookupXYandPutBits(bv, h, xy);
+	if (h->linbits) putLinbits(bv, h, linbitsX);
+	if (x) bv.put1Bit(xIsNeg);
+	if (y) bv.put1Bit(yIsNeg);
+      }
+    } else { /* ((x < h->xlen) && (y >= h->ylen)) */
+      xy = (x<<4)|yl1;
+      lookupXYandPutBits(bv, h, xy);
+      linbitsY = y-yl1;
+      if (linbitsY > h->linmax) {
+#ifdef DEBUG
+	fprintf(stderr,"warning: Huffman Y table overflow\n");
+#endif
+	linbitsY = h->linmax;
+      };
+      if (x) bv.put1Bit(xIsNeg);
+      if (h->linbits) putLinbits(bv, h, linbitsY);
+      if (y) bv.put1Bit(yIsNeg);
+    }
+  }
+}
+#endif
diff --git a/liveMedia/MP3InternalsHuffman.hh b/liveMedia/MP3InternalsHuffman.hh
new file mode 100644
index 0000000..dcd4f2f
--- /dev/null
+++ b/liveMedia/MP3InternalsHuffman.hh
@@ -0,0 +1,82 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP3 internal implementation details (Huffman encoding)
+// C++ header
+
+#ifndef _MP3_INTERNALS_HUFFMAN_HH
+#define _MP3_INTERNALS_HUFFMAN_HH
+
+#ifndef _MP3_INTERNALS_HH
+#include "MP3Internals.hh"
+#endif
+
+void updateSideInfoForHuffman(MP3SideInfo& sideInfo, Boolean isMPEG2,
+			      unsigned char const* mainDataPtr,
+			      unsigned p23L0, unsigned p23L1,
+			      unsigned& part23Length0a,
+			      unsigned& part23Length0aTruncation,
+			      unsigned& part23Length0b,
+			      unsigned& part23Length0bTruncation,
+			      unsigned& part23Length1a,
+			      unsigned& part23Length1aTruncation,
+			      unsigned& part23Length1b,
+			      unsigned& part23Length1bTruncation);
+
+#define SSLIMIT 18
+
+class MP3HuffmanEncodingInfo {
+public:
+  MP3HuffmanEncodingInfo(Boolean includeDecodedValues = False);
+  ~MP3HuffmanEncodingInfo();
+
+public:
+  unsigned numSamples;
+  unsigned allBitOffsets[SBLIMIT*SSLIMIT + 1];
+  unsigned reg1Start, reg2Start, bigvalStart; /* special bit offsets */
+  unsigned* decodedValues;
+};
+
+/* forward */
+void MP3HuffmanDecode(MP3SideInfo::gr_info_s_t* gr, Boolean isMPEG2,
+		      unsigned char const* fromBasePtr,
+		      unsigned fromBitOffset, unsigned fromLength,
+		      unsigned& scaleFactorsLength,
+		      MP3HuffmanEncodingInfo& hei);
+
+extern unsigned char huffdec[]; // huffman table data
+
+// The following are used if we process Huffman-decoded values
+#ifdef FOUR_BYTE_SAMPLES
+#define BYTES_PER_SAMPLE_VALUE 4
+#else
+#ifdef TWO_BYTE_SAMPLES
+#define BYTES_PER_SAMPLE_VALUE 2
+#else
+// ONE_BYTE_SAMPLES
+#define BYTES_PER_SAMPLE_VALUE 1
+#endif
+#endif
+
+#ifdef DO_HUFFMAN_ENCODING
+unsigned MP3HuffmanEncode(MP3SideInfo::gr_info_s_t const* gr,
+			  unsigned char const* fromPtr,
+			  unsigned char* toPtr, unsigned toBitOffset,
+			  unsigned numHuffBits);
+#endif
+
+#endif
diff --git a/liveMedia/MP3InternalsHuffmanTable.cpp b/liveMedia/MP3InternalsHuffmanTable.cpp
new file mode 100644
index 0000000..8419e44
--- /dev/null
+++ b/liveMedia/MP3InternalsHuffmanTable.cpp
@@ -0,0 +1,1548 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP3 internal implementation details (Huffman encoding)
+// Table
+
+#include "MP3InternalsHuffman.hh"
+
+unsigned char huffdec[] = {
+0x0a, 0x2e, 0x74, 0x61, 0x62, 0x6c, 0x65, 0x20, 0x20, 0x30, 0x20, 0x20,
+0x20, 0x30, 0x20, 0x20, 0x30, 0x20, 0x20, 0x30, 0x20, 0x20, 0x30, 0x0a,
+0x2e, 0x74, 0x72, 0x65, 0x65, 0x64, 0x61, 0x74, 0x61, 0x0a, 0x0a, 0x2e,
+0x74, 0x61, 0x62, 0x6c, 0x65, 0x20, 0x20, 0x31, 0x20, 0x20, 0x20, 0x37,
+0x20, 0x20, 0x32, 0x20, 0x20, 0x32, 0x20, 0x20, 0x30, 0x0a, 0x2e, 0x74,
+0x72, 0x65, 0x65, 0x64, 0x61, 0x74, 0x61, 0x0a, 0x20, 0x32, 0x20, 0x20,
+0x31, 0x20, 0x20, 0x30, 0x20, 0x20, 0x30, 0x20, 0x20, 0x32, 0x20, 0x20,
+0x31, 0x20, 0x20, 0x30, 0x20, 0x31, 0x30, 0x20, 0x20, 0x32, 0x20, 0x20,
+0x31, 0x20, 0x20, 0x30, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20, 0x31,
+0x31, 0x20, 0x0a, 0x0a, 0x2e, 0x74, 0x61, 0x62, 0x6c, 0x65, 0x20, 0x20,
+0x32, 0x20, 0x20, 0x31, 0x37, 0x20, 0x20, 0x33, 0x20, 0x20, 0x33, 0x20,
+0x20, 0x30, 0x0a, 0x2e, 0x74, 0x72, 0x65, 0x65, 0x64, 0x61, 0x74, 0x61,
+0x0a, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20, 0x20, 0x30,
+0x20, 0x20, 0x34, 0x20, 0x20, 0x31, 0x20, 0x20, 0x32, 0x20, 0x20, 0x31,
+0x20, 0x20, 0x30, 0x20, 0x31, 0x30, 0x20, 0x20, 0x30, 0x20, 0x20, 0x31,
+0x20, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20, 0x31, 0x31,
+0x20, 0x20, 0x34, 0x20, 0x20, 0x31, 0x20, 0x20, 0x32, 0x20, 0x20, 0x31,
+0x20, 0x20, 0x30, 0x20, 0x32, 0x30, 0x20, 0x20, 0x30, 0x20, 0x32, 0x31,
+0x20, 0x0a, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20, 0x31,
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+0x20, 0x31, 0x20, 0x20, 0x30, 0x20, 0x20, 0x63, 0x20, 0x20, 0x30, 0x20,
+0x20, 0x61, 0x20, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20,
+0x20, 0x33, 0x20, 0x20, 0x30, 0x20, 0x20, 0x36, 0x20, 0x20, 0x36, 0x20,
+0x20, 0x31, 0x20, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20,
+0x20, 0x39, 0x20, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20,
+0x20, 0x35, 0x20, 0x20, 0x30, 0x20, 0x20, 0x37, 0x20, 0x0a, 0x20, 0x34,
+0x20, 0x20, 0x31, 0x20, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30,
+0x20, 0x20, 0x65, 0x20, 0x20, 0x30, 0x20, 0x20, 0x64, 0x20, 0x20, 0x32,
+0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20, 0x20, 0x66, 0x20, 0x20, 0x30,
+0x20, 0x20, 0x62, 0x20, 0x0a, 0x0a, 0x2e, 0x74, 0x61, 0x62, 0x6c, 0x65,
+0x20, 0x33, 0x33, 0x20, 0x20, 0x33, 0x31, 0x20, 0x20, 0x31, 0x20, 0x31,
+0x36, 0x20, 0x20, 0x30, 0x0a, 0x2e, 0x74, 0x72, 0x65, 0x65, 0x64, 0x61,
+0x74, 0x61, 0x0a, 0x31, 0x30, 0x20, 0x20, 0x31, 0x20, 0x20, 0x38, 0x20,
+0x20, 0x31, 0x20, 0x20, 0x34, 0x20, 0x20, 0x31, 0x20, 0x20, 0x32, 0x20,
+0x20, 0x31, 0x20, 0x20, 0x30, 0x20, 0x20, 0x30, 0x20, 0x20, 0x30, 0x20,
+0x20, 0x31, 0x20, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20,
+0x20, 0x32, 0x20, 0x20, 0x30, 0x20, 0x20, 0x33, 0x20, 0x20, 0x34, 0x20,
+0x20, 0x31, 0x20, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20,
+0x20, 0x34, 0x20, 0x0a, 0x20, 0x30, 0x20, 0x20, 0x35, 0x20, 0x20, 0x32,
+0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20, 0x20, 0x36, 0x20, 0x20, 0x30,
+0x20, 0x20, 0x37, 0x20, 0x20, 0x38, 0x20, 0x20, 0x31, 0x20, 0x20, 0x34,
+0x20, 0x20, 0x31, 0x20, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30,
+0x20, 0x20, 0x38, 0x20, 0x20, 0x30, 0x20, 0x20, 0x39, 0x20, 0x20, 0x32,
+0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20, 0x20, 0x61, 0x20, 0x20, 0x30,
+0x20, 0x20, 0x62, 0x20, 0x0a, 0x20, 0x34, 0x20, 0x20, 0x31, 0x20, 0x20,
+0x32, 0x20, 0x20, 0x31, 0x20, 0x20, 0x30, 0x20, 0x20, 0x63, 0x20, 0x20,
+0x30, 0x20, 0x20, 0x64, 0x20, 0x20, 0x32, 0x20, 0x20, 0x31, 0x20, 0x20,
+0x30, 0x20, 0x20, 0x65, 0x20, 0x20, 0x30, 0x20, 0x20, 0x66, 0x20, 0x0a,
+0x0a, 0x2e, 0x65, 0x6e, 0x64, 0x0a
+};
diff --git a/liveMedia/MP3StreamState.cpp b/liveMedia/MP3StreamState.cpp
new file mode 100644
index 0000000..01bf52f
--- /dev/null
+++ b/liveMedia/MP3StreamState.cpp
@@ -0,0 +1,438 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class encapsulating the state of a MP3 stream
+// Implementation
+
+#include "MP3StreamState.hh"
+#include "InputFile.hh"
+#include "GroupsockHelper.hh"
+
+#if defined(__WIN32__) || defined(_WIN32)
+#define snprintf _snprintf
+#if _MSC_VER >= 1400 // 1400 == vs2005
+#define fileno _fileno
+#endif
+#endif
+
+#define MILLION 1000000
+
+MP3StreamState::MP3StreamState(UsageEnvironment& env)
+  : fEnv(env), fFid(NULL), fPresentationTimeScale(1) {
+}
+
+MP3StreamState::~MP3StreamState() {
+  // Close our open file or socket:
+  if (fFid != NULL && fFid != stdin) {
+    if (fFidIsReallyASocket) {
+      intptr_t fid_long = (intptr_t)fFid;
+      closeSocket((int)fid_long);
+    } else {
+      CloseInputFile(fFid);
+    }
+  }
+}
+
+void MP3StreamState::assignStream(FILE* fid, unsigned fileSize) {
+  fFid = fid;
+
+  if (fileSize == (unsigned)(-1)) { /*HACK#####*/
+    fFidIsReallyASocket = 1;
+    fFileSize = 0;
+  } else {
+    fFidIsReallyASocket = 0;
+    fFileSize = fileSize;
+  }
+  fNumFramesInFile = 0; // until we know otherwise
+  fIsVBR = fHasXingTOC = False; // ditto
+
+  // Set the first frame's 'presentation time' to the current wall time:
+  gettimeofday(&fNextFramePresentationTime, NULL);
+}
+
+struct timeval MP3StreamState::currentFramePlayTime() const {
+  unsigned const numSamples = 1152;
+  unsigned const freq = fr().samplingFreq*(1 + fr().isMPEG2);
+
+  // result is numSamples/freq
+  unsigned const uSeconds
+    = ((numSamples*2*MILLION)/freq + 1)/2; // rounds to nearest integer
+
+  struct timeval result;
+  result.tv_sec = uSeconds/MILLION;
+  result.tv_usec = uSeconds%MILLION;
+  return result;
+}
+
+float MP3StreamState::filePlayTime() const {
+  unsigned numFramesInFile = fNumFramesInFile;
+  if (numFramesInFile == 0) {
+    // Estimate the number of frames from the file size, and the
+    // size of the current frame:
+    numFramesInFile = fFileSize/(4 + fCurrentFrame.frameSize);
+  }
+
+  struct timeval const pt = currentFramePlayTime();
+  return numFramesInFile*(pt.tv_sec + pt.tv_usec/(float)MILLION);
+}
+
+unsigned MP3StreamState::getByteNumberFromPositionFraction(float fraction) {
+  if (fHasXingTOC) {
+    // The file is VBR, with a Xing TOC; use it to determine which byte to seek to:
+    float percent = fraction*100.0f;
+    unsigned a = (unsigned)percent;
+    if (a > 99) a = 99;
+
+    unsigned fa = fXingTOC[a];
+    unsigned fb;
+    if (a < 99) {
+      fb = fXingTOC[a+1];
+    } else {
+      fb = 256;
+    }
+    fraction = (fa + (fb-fa)*(percent-a))/256.0f;
+  }
+
+  return (unsigned)(fraction*fFileSize);
+}
+
+void MP3StreamState::seekWithinFile(unsigned seekByteNumber) {
+  if (fFidIsReallyASocket) return; // it's not seekable
+
+  SeekFile64(fFid, seekByteNumber, SEEK_SET);
+}
+
+unsigned MP3StreamState::findNextHeader(struct timeval& presentationTime) {
+  presentationTime = fNextFramePresentationTime;
+
+  if (!findNextFrame()) return 0;
+
+  // From this frame, figure out the *next* frame's presentation time:
+  struct timeval framePlayTime = currentFramePlayTime();
+  if (fPresentationTimeScale > 1) {
+    // Scale this value
+    unsigned secondsRem = framePlayTime.tv_sec % fPresentationTimeScale;
+    framePlayTime.tv_sec -= secondsRem;
+    framePlayTime.tv_usec += secondsRem*MILLION;
+    framePlayTime.tv_sec /= fPresentationTimeScale;
+    framePlayTime.tv_usec /= fPresentationTimeScale;
+  }
+  fNextFramePresentationTime.tv_usec += framePlayTime.tv_usec;
+  fNextFramePresentationTime.tv_sec
+    += framePlayTime.tv_sec + fNextFramePresentationTime.tv_usec/MILLION;
+  fNextFramePresentationTime.tv_usec %= MILLION;
+
+  return fr().hdr;
+}
+
+Boolean MP3StreamState::readFrame(unsigned char* outBuf, unsigned outBufSize,
+				  unsigned& resultFrameSize,
+				  unsigned& resultDurationInMicroseconds) {
+  /* We assume that "mp3FindNextHeader()" has already been called */
+
+  resultFrameSize = 4 + fr().frameSize;
+
+  if (outBufSize < resultFrameSize) {
+#ifdef DEBUG_ERRORS
+    fprintf(stderr, "Insufficient buffer size for reading input frame (%d, need %d)\n",
+	    outBufSize, resultFrameSize);
+#endif
+    if (outBufSize < 4) outBufSize = 0;
+    resultFrameSize = outBufSize;
+
+    return False;
+  }
+
+  if (resultFrameSize >= 4) {
+    unsigned& hdr = fr().hdr;
+    *outBuf++ = (unsigned char)(hdr>>24);
+    *outBuf++ = (unsigned char)(hdr>>16);
+    *outBuf++ = (unsigned char)(hdr>>8);
+    *outBuf++ = (unsigned char)(hdr);
+
+    memmove(outBuf, fr().frameBytes, resultFrameSize-4);
+  }
+
+  struct timeval const pt = currentFramePlayTime();
+  resultDurationInMicroseconds = pt.tv_sec*MILLION + pt.tv_usec;
+
+  return True;
+}
+
+void MP3StreamState::getAttributes(char* buffer, unsigned bufferSize) const {
+  char const* formatStr
+    = "bandwidth %d MPEGnumber %d MPEGlayer %d samplingFrequency %d isStereo %d playTime %d isVBR %d";
+  unsigned fpt = (unsigned)(filePlayTime() + 0.5); // rounds to nearest integer
+#if defined(IRIX) || defined(ALPHA) || defined(_QNX4) || defined(IMN_PIM) || defined(CRIS)
+  /* snprintf() isn't defined, so just use sprintf() - ugh! */
+  sprintf(buffer, formatStr,
+	  fr().bitrate, fr().isMPEG2 ? 2 : 1, fr().layer, fr().samplingFreq, fr().isStereo,
+	  fpt, fIsVBR);
+#else
+  snprintf(buffer, bufferSize, formatStr,
+	  fr().bitrate, fr().isMPEG2 ? 2 : 1, fr().layer, fr().samplingFreq, fr().isStereo,
+	  fpt, fIsVBR);
+#endif
+}
+
+// This is crufty old code that needs to be cleaned up #####
+#define HDRCMPMASK 0xfffffd00
+
+Boolean MP3StreamState::findNextFrame() {
+  unsigned char hbuf[8];
+  unsigned l; int i;
+  int attempt = 0;
+
+ read_again:
+  if (readFromStream(hbuf, 4) != 4) return False;
+
+  fr().hdr =  ((unsigned long) hbuf[0] << 24)
+            | ((unsigned long) hbuf[1] << 16)
+            | ((unsigned long) hbuf[2] << 8)
+            | (unsigned long) hbuf[3];
+
+#ifdef DEBUG_PARSE
+  fprintf(stderr, "fr().hdr: 0x%08x\n", fr().hdr);
+#endif
+  if (fr().oldHdr != fr().hdr || !fr().oldHdr) {
+    i = 0;
+  init_resync:
+#ifdef DEBUG_PARSE
+    fprintf(stderr, "init_resync: fr().hdr: 0x%08x\n", fr().hdr);
+#endif
+    if (   (fr().hdr & 0xffe00000) != 0xffe00000
+	|| (fr().hdr & 0x00060000) == 0 // undefined 'layer' field
+	|| (fr().hdr & 0x0000F000) == 0 // 'free format' bitrate index
+	|| (fr().hdr & 0x0000F000) == 0x0000F000 // undefined bitrate index
+	|| (fr().hdr & 0x00000C00) == 0x00000C00 // undefined frequency index
+	|| (fr().hdr & 0x00000003) != 0x00000000 // 'emphasis' field unexpectedly set
+       ) {
+      /* RSF: Do the following test even if we're not at the
+	 start of the file, in case we have two or more
+	 separate MP3 files cat'ed together:
+      */
+      /* Check for RIFF hdr */
+      if (fr().hdr == ('R'<<24)+('I'<<16)+('F'<<8)+'F') {
+	unsigned char buf[70 /*was: 40*/];
+#ifdef DEBUG_ERRORS
+	fprintf(stderr,"Skipped RIFF header\n");
+#endif
+	readFromStream(buf, 66); /* already read 4 */
+	goto read_again;
+      }
+      /* Check for ID3 hdr */
+      if ((fr().hdr&0xFFFFFF00) == ('I'<<24)+('D'<<16)+('3'<<8)) {
+	unsigned tagSize, bytesToSkip;
+	unsigned char buf[1000];
+	readFromStream(buf, 6); /* already read 4 */
+	tagSize = ((buf[2]&0x7F)<<21) + ((buf[3]&0x7F)<<14) + ((buf[4]&0x7F)<<7) + (buf[5]&0x7F);
+	bytesToSkip = tagSize;
+	while (bytesToSkip > 0) {
+	  unsigned bytesToRead = sizeof buf;
+	  if (bytesToRead > bytesToSkip) {
+	    bytesToRead = bytesToSkip;
+	  }
+	  readFromStream(buf, bytesToRead);
+	  bytesToSkip -= bytesToRead;
+	}
+#ifdef DEBUG_ERRORS
+	fprintf(stderr,"Skipped %d-byte ID3 header\n", tagSize);
+#endif
+	goto read_again;
+      }
+      /* give up after 20,000 bytes */
+      if (i++ < 20000/*4096*//*1024*/) {
+	memmove (&hbuf[0], &hbuf[1], 3);
+	if (readFromStream(hbuf+3,1) != 1) {
+	  return False;
+	}
+	fr().hdr <<= 8;
+	fr().hdr |= hbuf[3];
+	fr().hdr &= 0xffffffff;
+#ifdef DEBUG_PARSE
+	fprintf(stderr, "calling init_resync %d\n", i);
+#endif
+	goto init_resync;
+      }
+#ifdef DEBUG_ERRORS
+      fprintf(stderr,"Giving up searching valid MPEG header\n");
+#endif
+      return False;
+
+#ifdef DEBUG_ERRORS
+      fprintf(stderr,"Illegal Audio-MPEG-Header 0x%08lx at offset 0x%lx.\n",
+	      fr().hdr,tell_stream(str)-4);
+#endif
+      /* Read more bytes until we find something that looks
+	 reasonably like a valid header.  This is not a
+	 perfect strategy, but it should get us back on the
+	 track within a short time (and hopefully without
+	 too much distortion in the audio output).  */
+      do {
+	attempt++;
+	memmove (&hbuf[0], &hbuf[1], 7);
+	if (readFromStream(&hbuf[3],1) != 1) {
+	  return False;
+	}
+
+	/* This is faster than combining fr().hdr from scratch */
+	fr().hdr = ((fr().hdr << 8) | hbuf[3]) & 0xffffffff;
+
+	if (!fr().oldHdr)
+	  goto init_resync;       /* "considered harmful", eh? */
+
+      } while ((fr().hdr & HDRCMPMASK) != (fr().oldHdr & HDRCMPMASK)
+	       && (fr().hdr & HDRCMPMASK) != (fr().firstHdr & HDRCMPMASK));
+#ifdef DEBUG_ERRORS
+      fprintf (stderr, "Skipped %d bytes in input.\n", attempt);
+#endif
+    }
+    if (!fr().firstHdr) {
+      fr().firstHdr = fr().hdr;
+    }
+
+    fr().setParamsFromHeader();
+    fr().setBytePointer(fr().frameBytes, fr().frameSize);
+
+    fr().oldHdr = fr().hdr;
+
+    if (fr().isFreeFormat) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr,"Free format not supported.\n");
+#endif
+      return False;
+    }
+
+#ifdef MP3_ONLY
+    if (fr().layer != 3) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG layer %d is not supported!\n", fr().layer);
+#endif
+      return False;
+    }
+#endif
+  }
+
+  if ((l = readFromStream(fr().frameBytes, fr().frameSize))
+      != fr().frameSize) {
+    if (l == 0) return False;
+    memset(fr().frameBytes+1, 0, fr().frameSize-1);
+  }
+
+  return True;
+}
+
+static Boolean socketIsReadable(int socket) {
+  const unsigned numFds = socket+1;
+  fd_set rd_set;
+  FD_ZERO(&rd_set);
+  FD_SET((unsigned)socket, &rd_set);
+  struct timeval timeout;
+  timeout.tv_sec = timeout.tv_usec = 0;
+
+  int result = select(numFds, &rd_set, NULL, NULL, &timeout);
+  return result != 0; // not > 0, because windows can return -1 for file sockets
+}
+
+static char watchVariable;
+
+static void checkFunc(void* /*clientData*/) {
+  watchVariable = ~0;
+}
+
+static void waitUntilSocketIsReadable(UsageEnvironment& env, int socket) {
+  while (!socketIsReadable(socket)) {
+    // Delay a short period of time before checking again.
+    unsigned usecsToDelay = 1000; // 1 ms
+    env.taskScheduler().scheduleDelayedTask(usecsToDelay,
+					    (TaskFunc*)checkFunc, (void*)NULL);
+    watchVariable = 0;
+    env.taskScheduler().doEventLoop(&watchVariable);
+        // This allows other tasks to run while we're waiting:
+  }
+}
+
+unsigned MP3StreamState::readFromStream(unsigned char* buf,
+					unsigned numChars) {
+  // Hack for doing socket I/O instead of file I/O (e.g., on Windows)
+  if (fFidIsReallyASocket) {
+    intptr_t fid_long = (intptr_t)fFid;
+    int sock = (int)fid_long;
+    unsigned totBytesRead = 0;
+    do {
+      waitUntilSocketIsReadable(fEnv, sock);
+      int bytesRead
+	= recv(sock, &((char*)buf)[totBytesRead], numChars-totBytesRead, 0);
+      if (bytesRead < 0) return 0;
+
+      totBytesRead += (unsigned)bytesRead;
+    } while (totBytesRead < numChars);
+
+    return totBytesRead;
+  } else {
+#ifndef _WIN32_WCE
+    waitUntilSocketIsReadable(fEnv, (int)fileno(fFid));
+#endif
+    return fread(buf, 1, numChars, fFid);
+  }
+}
+
+#define XING_FRAMES_FLAG       0x0001
+#define XING_BYTES_FLAG        0x0002
+#define XING_TOC_FLAG          0x0004
+#define XING_VBR_SCALE_FLAG    0x0008
+
+void MP3StreamState::checkForXingHeader() {
+  // Look for 'Xing' in the first 4 bytes after the 'side info':
+  if (fr().frameSize < fr().sideInfoSize) return;
+  unsigned bytesAvailable = fr().frameSize - fr().sideInfoSize;
+  unsigned char* p = &(fr().frameBytes[fr().sideInfoSize]);
+
+  if (bytesAvailable < 8) return;
+  if (p[0] != 'X' || p[1] != 'i' || p[2] != 'n' || p[3] != 'g') return;
+
+  // We found it.
+  fIsVBR = True;
+
+  u_int32_t flags = (p[4]<<24) | (p[5]<<16) | (p[6]<<8) | p[7];
+  unsigned i = 8;
+  bytesAvailable -= 8;
+
+  if (flags&XING_FRAMES_FLAG) {
+    // The next 4 bytes are the number of frames:
+    if (bytesAvailable < 4) return;
+    fNumFramesInFile = (p[i]<<24)|(p[i+1]<<16)|(p[i+2]<<8)|(p[i+3]);
+    i += 4; bytesAvailable -= 4;
+  }
+
+  if (flags&XING_BYTES_FLAG) {
+    // The next 4 bytes is the file size:
+    if (bytesAvailable < 4) return;
+    fFileSize = (p[i]<<24)|(p[i+1]<<16)|(p[i+2]<<8)|(p[i+3]);
+    i += 4; bytesAvailable -= 4;
+  }
+
+  if (flags&XING_TOC_FLAG) {
+    // Fill in the Xing 'table of contents':
+    if (bytesAvailable < XING_TOC_LENGTH) return;
+    fHasXingTOC = True;
+    for (unsigned j = 0; j < XING_TOC_LENGTH; ++j) {
+      fXingTOC[j] = p[i+j];
+    }
+    i += XING_TOC_FLAG; bytesAvailable -= XING_TOC_FLAG;
+  }
+}
diff --git a/liveMedia/MP3StreamState.hh b/liveMedia/MP3StreamState.hh
new file mode 100644
index 0000000..75f2b93
--- /dev/null
+++ b/liveMedia/MP3StreamState.hh
@@ -0,0 +1,90 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class encapsulating the state of a MP3 stream
+// C++ header
+
+#ifndef _MP3_STREAM_STATE_HH
+#define _MP3_STREAM_STATE_HH
+
+#ifndef _USAGE_ENVIRONMENT_HH
+#include "UsageEnvironment.hh"
+#endif
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+#ifndef _MP3_INTERNALS_HH
+#include "MP3Internals.hh"
+#endif
+#ifndef _NET_COMMON_H
+#include "NetCommon.h"
+#endif
+
+#include <stdio.h>
+
+#define XING_TOC_LENGTH 100
+
+class MP3StreamState {
+public:
+  MP3StreamState(UsageEnvironment& env);
+  virtual ~MP3StreamState();
+
+  void assignStream(FILE* fid, unsigned fileSize);
+
+  unsigned findNextHeader(struct timeval& presentationTime);
+  Boolean readFrame(unsigned char* outBuf, unsigned outBufSize,
+		    unsigned& resultFrameSize,
+		    unsigned& resultDurationInMicroseconds);
+      // called after findNextHeader()
+
+  void getAttributes(char* buffer, unsigned bufferSize) const;
+
+  float filePlayTime() const; // in seconds
+  unsigned fileSize() const { return fFileSize; }
+  void setPresentationTimeScale(unsigned scale) { fPresentationTimeScale = scale; }
+  unsigned getByteNumberFromPositionFraction(float fraction); // 0.0 <= fraction <= 1.0
+  void seekWithinFile(unsigned seekByteNumber);
+
+  void checkForXingHeader(); // hack for Xing VBR files
+
+protected: // private->protected requested by Pierre l'Hussiez
+  unsigned readFromStream(unsigned char* buf, unsigned numChars);
+
+private:
+  MP3FrameParams& fr() {return fCurrentFrame;}
+  MP3FrameParams const& fr() const {return fCurrentFrame;}
+
+  struct timeval currentFramePlayTime() const;
+
+  Boolean findNextFrame();
+
+private:
+  UsageEnvironment& fEnv;
+  FILE* fFid;
+  Boolean fFidIsReallyASocket;
+  unsigned fFileSize;
+  unsigned fNumFramesInFile;
+  unsigned fPresentationTimeScale;
+    // used if we're streaming at other than the normal rate
+  Boolean fIsVBR, fHasXingTOC;
+  u_int8_t fXingTOC[XING_TOC_LENGTH]; // set iff "fHasXingTOC" is True
+
+  MP3FrameParams fCurrentFrame;
+  struct timeval fNextFramePresentationTime;
+};
+
+#endif
diff --git a/liveMedia/MP3Transcoder.cpp b/liveMedia/MP3Transcoder.cpp
new file mode 100644
index 0000000..54f65d8
--- /dev/null
+++ b/liveMedia/MP3Transcoder.cpp
@@ -0,0 +1,52 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP3 Transcoder
+// Implementation
+
+#include "MP3Transcoder.hh"
+
+MP3Transcoder::MP3Transcoder(UsageEnvironment& env,
+			     MP3ADUTranscoder* aduTranscoder)
+  : MP3FromADUSource(env, aduTranscoder, False) {
+}
+
+MP3Transcoder::~MP3Transcoder() {
+}
+
+MP3Transcoder* MP3Transcoder::createNew(UsageEnvironment& env,
+					unsigned outBitrate /* in kbps */,
+					FramedSource* inputSource) {
+  MP3Transcoder* newSource = NULL;
+
+  do {
+    // Create the intermediate filters that help implement the transcoder:
+    ADUFromMP3Source* aduFromMP3
+      = ADUFromMP3Source::createNew(env, inputSource, False);
+    // Note: This also checks that "inputSource" is an MP3 source
+    if (aduFromMP3 == NULL) break;
+
+    MP3ADUTranscoder* aduTranscoder
+      = MP3ADUTranscoder::createNew(env, outBitrate, aduFromMP3);
+    if (aduTranscoder == NULL) break;
+
+    // Then create the transcoder itself:
+    newSource = new MP3Transcoder(env, aduTranscoder);
+  } while (0);
+
+  return newSource;
+}
diff --git a/liveMedia/MPEG1or2AudioRTPSink.cpp b/liveMedia/MPEG1or2AudioRTPSink.cpp
new file mode 100644
index 0000000..8486642
--- /dev/null
+++ b/liveMedia/MPEG1or2AudioRTPSink.cpp
@@ -0,0 +1,63 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for MPEG audio (RFC 2250)
+// Implementation
+
+#include "MPEG1or2AudioRTPSink.hh"
+
+MPEG1or2AudioRTPSink::MPEG1or2AudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs)
+  : AudioRTPSink(env, RTPgs, 14, 90000, "MPA") {
+}
+
+MPEG1or2AudioRTPSink::~MPEG1or2AudioRTPSink() {
+}
+
+MPEG1or2AudioRTPSink*
+MPEG1or2AudioRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs) {
+  return new MPEG1or2AudioRTPSink(env, RTPgs);
+}
+
+void MPEG1or2AudioRTPSink::doSpecialFrameHandling(unsigned fragmentationOffset,
+					      unsigned char* frameStart,
+					      unsigned numBytesInFrame,
+					      struct timeval framePresentationTime,
+					      unsigned numRemainingBytes) {
+  // If this is the 1st frame in the 1st packet, set the RTP 'M' (marker)
+  // bit (because this is considered the start of a talk spurt):
+  if (isFirstPacket() && isFirstFrameInPacket()) {
+    setMarkerBit();
+  }
+
+  // If this is the first frame in the packet, set the lower half of the
+  // audio-specific header (to the "fragmentationOffset"):
+  if (isFirstFrameInPacket()) {
+    setSpecialHeaderWord(fragmentationOffset&0xFFFF);
+  }
+
+  // Important: Also call our base class's doSpecialFrameHandling(),
+  // to set the packet's timestamp:
+  MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
+					     frameStart, numBytesInFrame,
+					     framePresentationTime,
+					     numRemainingBytes);
+}
+
+unsigned MPEG1or2AudioRTPSink::specialHeaderSize() const {
+  // There's a 4 byte special audio header:
+  return 4;
+}
diff --git a/liveMedia/MPEG1or2AudioRTPSource.cpp b/liveMedia/MPEG1or2AudioRTPSource.cpp
new file mode 100644
index 0000000..6d8e75a
--- /dev/null
+++ b/liveMedia/MPEG1or2AudioRTPSource.cpp
@@ -0,0 +1,62 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MPEG-1 or MPEG-2 Audio RTP Sources
+// Implementation
+
+#include "MPEG1or2AudioRTPSource.hh"
+
+MPEG1or2AudioRTPSource*
+MPEG1or2AudioRTPSource::createNew(UsageEnvironment& env,
+			      Groupsock* RTPgs,
+			      unsigned char rtpPayloadFormat,
+			      unsigned rtpTimestampFrequency) {
+  return new MPEG1or2AudioRTPSource(env, RTPgs, rtpPayloadFormat,
+				rtpTimestampFrequency);
+}
+
+MPEG1or2AudioRTPSource::MPEG1or2AudioRTPSource(UsageEnvironment& env,
+				       Groupsock* rtpGS,
+				       unsigned char rtpPayloadFormat,
+				       unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, rtpGS,
+			 rtpPayloadFormat, rtpTimestampFrequency) {
+}
+
+MPEG1or2AudioRTPSource::~MPEG1or2AudioRTPSource() {
+}
+
+Boolean MPEG1or2AudioRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+  // There's a 4-byte header indicating fragmentation.
+  if (packet->dataSize() < 4) return False;
+
+  // Note: This fragmentation header is actually useless to us, because
+  // it doesn't tell us whether or not this RTP packet *ends* a
+  // fragmented frame.  Thus, we can't use it to properly set
+  // "fCurrentPacketCompletesFrame".  Instead, we assume that even
+  // a partial audio frame will be usable to clients.
+
+  resultSpecialHeaderSize = 4;
+  return True;
+}
+
+char const* MPEG1or2AudioRTPSource::MIMEtype() const {
+  return "audio/MPEG";
+}
+
diff --git a/liveMedia/MPEG1or2AudioStreamFramer.cpp b/liveMedia/MPEG1or2AudioStreamFramer.cpp
new file mode 100644
index 0000000..b5725dd
--- /dev/null
+++ b/liveMedia/MPEG1or2AudioStreamFramer.cpp
@@ -0,0 +1,210 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an MPEG (1,2) audio elementary stream into frames
+// Implementation
+
+#include "MPEG1or2AudioStreamFramer.hh"
+#include "StreamParser.hh"
+#include "MP3Internals.hh"
+#include <GroupsockHelper.hh>
+
+////////// MPEG1or2AudioStreamParser definition //////////
+
+class MPEG1or2AudioStreamParser: public StreamParser {
+public:
+  MPEG1or2AudioStreamParser(MPEG1or2AudioStreamFramer* usingSource,
+			FramedSource* inputSource);
+  virtual ~MPEG1or2AudioStreamParser();
+
+public:
+  unsigned parse(unsigned& numTruncatedBytes);
+      // returns the size of the frame that was acquired, or 0 if none was
+
+  void registerReadInterest(unsigned char* to, unsigned maxSize);
+
+  MP3FrameParams const& currentFrame() const { return fCurrentFrame; }
+
+private:
+  unsigned char* fTo;
+  unsigned fMaxSize;
+
+  // Parameters of the most recently read frame:
+  MP3FrameParams fCurrentFrame; // also works for layer I or II
+};
+
+
+////////// MPEG1or2AudioStreamFramer implementation //////////
+
+MPEG1or2AudioStreamFramer
+::MPEG1or2AudioStreamFramer(UsageEnvironment& env, FramedSource* inputSource,
+			    Boolean syncWithInputSource)
+  : FramedFilter(env, inputSource),
+    fSyncWithInputSource(syncWithInputSource) {
+  reset();
+
+  fParser = new MPEG1or2AudioStreamParser(this, inputSource);
+}
+
+MPEG1or2AudioStreamFramer::~MPEG1or2AudioStreamFramer() {
+  delete fParser;
+}
+
+MPEG1or2AudioStreamFramer*
+MPEG1or2AudioStreamFramer::createNew(UsageEnvironment& env,
+				     FramedSource* inputSource,
+				     Boolean syncWithInputSource) {
+  // Need to add source type checking here???  #####
+  return new MPEG1or2AudioStreamFramer(env, inputSource, syncWithInputSource);
+}
+
+void MPEG1or2AudioStreamFramer::flushInput() {
+  reset();
+  fParser->flushInput();
+}
+
+void MPEG1or2AudioStreamFramer::reset() {
+  // Use the current wallclock time as the initial 'presentation time':
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+  resetPresentationTime(timeNow);
+}
+
+void MPEG1or2AudioStreamFramer
+::resetPresentationTime(struct timeval newPresentationTime) {
+  fNextFramePresentationTime = newPresentationTime;
+}
+
+void MPEG1or2AudioStreamFramer::doGetNextFrame() {
+  fParser->registerReadInterest(fTo, fMaxSize);
+  continueReadProcessing();
+}
+
+#define MILLION 1000000
+
+static unsigned const numSamplesByLayer[4] = {0, 384, 1152, 1152};
+
+struct timeval MPEG1or2AudioStreamFramer::currentFramePlayTime() const {
+  MP3FrameParams const& fr = fParser->currentFrame();
+  unsigned const numSamples = numSamplesByLayer[fr.layer];
+
+  struct timeval result;
+  unsigned const freq = fr.samplingFreq*(1 + fr.isMPEG2);
+  if (freq == 0) {
+    result.tv_sec = 0;
+    result.tv_usec = 0;
+    return result;
+  }
+
+  // result is numSamples/freq
+  unsigned const uSeconds
+    = ((numSamples*2*MILLION)/freq + 1)/2; // rounds to nearest integer
+
+  result.tv_sec = uSeconds/MILLION;
+  result.tv_usec = uSeconds%MILLION;
+  return result;
+}
+
+void MPEG1or2AudioStreamFramer
+::continueReadProcessing(void* clientData,
+			 unsigned char* /*ptr*/, unsigned /*size*/,
+			 struct timeval presentationTime) {
+  MPEG1or2AudioStreamFramer* framer = (MPEG1or2AudioStreamFramer*)clientData;
+  if (framer->fSyncWithInputSource) {
+    framer->resetPresentationTime(presentationTime);
+  }
+  framer->continueReadProcessing();
+}
+
+void MPEG1or2AudioStreamFramer::continueReadProcessing() {
+  unsigned acquiredFrameSize = fParser->parse(fNumTruncatedBytes);
+  if (acquiredFrameSize > 0) {
+    // We were able to acquire a frame from the input.
+    // It has already been copied to the reader's space.
+    fFrameSize = acquiredFrameSize;
+
+    // Also set the presentation time, and increment it for next time,
+    // based on the length of this frame:
+    fPresentationTime = fNextFramePresentationTime;
+    struct timeval framePlayTime = currentFramePlayTime();
+    fDurationInMicroseconds = framePlayTime.tv_sec*MILLION + framePlayTime.tv_usec;
+    fNextFramePresentationTime.tv_usec += framePlayTime.tv_usec;
+    fNextFramePresentationTime.tv_sec
+      += framePlayTime.tv_sec + fNextFramePresentationTime.tv_usec/MILLION;
+    fNextFramePresentationTime.tv_usec %= MILLION;
+
+    // Call our own 'after getting' function.  Because we're not a 'leaf'
+    // source, we can call this directly, without risking infinite recursion.
+    afterGetting(this);
+  } else {
+    // We were unable to parse a complete frame from the input, because:
+    // - we had to read more data from the source stream, or
+    // - the source stream has ended.
+  }
+}
+
+
+////////// MPEG1or2AudioStreamParser implementation //////////
+
+MPEG1or2AudioStreamParser
+::MPEG1or2AudioStreamParser(MPEG1or2AudioStreamFramer* usingSource,
+			FramedSource* inputSource)
+  : StreamParser(inputSource, FramedSource::handleClosure, usingSource,
+		 &MPEG1or2AudioStreamFramer::continueReadProcessing, usingSource) {
+}
+
+MPEG1or2AudioStreamParser::~MPEG1or2AudioStreamParser() {
+}
+
+void MPEG1or2AudioStreamParser::registerReadInterest(unsigned char* to,
+						 unsigned maxSize) {
+  fTo = to;
+  fMaxSize = maxSize;
+}
+
+unsigned MPEG1or2AudioStreamParser::parse(unsigned& numTruncatedBytes) {
+  try {
+    saveParserState();
+
+    // We expect a MPEG audio header (first 11 bits set to 1) at the start:
+    while (((fCurrentFrame.hdr = test4Bytes())&0xFFE00000) != 0xFFE00000) {
+      skipBytes(1);
+      saveParserState();
+    }
+
+    fCurrentFrame.setParamsFromHeader();
+
+    // Copy the frame to the requested destination:
+    unsigned frameSize = fCurrentFrame.frameSize + 4; // include header
+    if (frameSize > fMaxSize) {
+      numTruncatedBytes = frameSize - fMaxSize;
+      frameSize = fMaxSize;
+    } else {
+      numTruncatedBytes = 0;
+    }
+
+    getBytes(fTo, frameSize);
+    skipBytes(numTruncatedBytes);
+
+    return frameSize;
+  } catch (int /*e*/) {
+#ifdef DEBUG
+    fprintf(stderr, "MPEG1or2AudioStreamParser::parse() EXCEPTION (This is normal behavior - *not* an error)\n");
+#endif
+    return 0;  // the parsing got interrupted
+  }
+}
diff --git a/liveMedia/MPEG1or2Demux.cpp b/liveMedia/MPEG1or2Demux.cpp
new file mode 100644
index 0000000..932582c
--- /dev/null
+++ b/liveMedia/MPEG1or2Demux.cpp
@@ -0,0 +1,756 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Demultiplexer for a MPEG 1 or 2 Program Stream
+// Implementation
+
+#include "MPEG1or2Demux.hh"
+#include "MPEG1or2DemuxedElementaryStream.hh"
+#include "StreamParser.hh"
+#include <stdlib.h>
+
+////////// MPEGProgramStreamParser definition //////////
+
+// An enum representing the current state of the parser:
+enum MPEGParseState {
+  PARSING_PACK_HEADER,
+  PARSING_SYSTEM_HEADER,
+  PARSING_PES_PACKET
+};
+
+class MPEGProgramStreamParser: public StreamParser {
+public:
+  MPEGProgramStreamParser(MPEG1or2Demux* usingDemux, FramedSource* inputSource);
+  virtual ~MPEGProgramStreamParser();
+
+public:
+  unsigned char parse();
+      // returns the stream id of a stream for which a frame was acquired,
+      // or 0 if no such frame was acquired.
+
+private:
+  void setParseState(MPEGParseState parseState);
+
+  void parsePackHeader();
+  void parseSystemHeader();
+  unsigned char parsePESPacket(); // returns as does parse()
+
+  Boolean isSpecialStreamId(unsigned char stream_id) const;
+  // for PES packet header parsing
+
+private:
+  MPEG1or2Demux* fUsingDemux;
+  MPEGParseState fCurrentParseState;
+};
+
+
+////////// MPEG1or2Demux::OutputDescriptor::SavedData definition/implementation //////////
+
+class MPEG1or2Demux::OutputDescriptor::SavedData {
+public:
+  SavedData(unsigned char* buf, unsigned size)
+    : next(NULL), data(buf), dataSize(size), numBytesUsed(0) {
+  }
+  virtual ~SavedData() {
+    delete[] data;
+    delete next;
+  }
+
+  SavedData* next;
+  unsigned char* data;
+  unsigned dataSize, numBytesUsed;
+};
+
+
+////////// MPEG1or2Demux implementation //////////
+
+MPEG1or2Demux
+::MPEG1or2Demux(UsageEnvironment& env,
+		FramedSource* inputSource, Boolean reclaimWhenLastESDies)
+  : Medium(env),
+    fInputSource(inputSource), fMPEGversion(0),
+    fNextAudioStreamNumber(0), fNextVideoStreamNumber(0),
+    fReclaimWhenLastESDies(reclaimWhenLastESDies), fNumOutstandingESs(0),
+    fNumPendingReads(0), fHaveUndeliveredData(False) {
+  fParser = new MPEGProgramStreamParser(this, inputSource);
+  for (unsigned i = 0; i < 256; ++i) {
+    fOutput[i].savedDataHead = fOutput[i].savedDataTail = NULL;
+    fOutput[i].isPotentiallyReadable = False;
+    fOutput[i].isCurrentlyActive = False;
+    fOutput[i].isCurrentlyAwaitingData = False;
+  }
+}
+
+MPEG1or2Demux::~MPEG1or2Demux() {
+  delete fParser;
+  for (unsigned i = 0; i < 256; ++i) delete fOutput[i].savedDataHead;
+  Medium::close(fInputSource);
+}
+
+MPEG1or2Demux* MPEG1or2Demux
+::createNew(UsageEnvironment& env,
+	    FramedSource* inputSource, Boolean reclaimWhenLastESDies) {
+  // Need to add source type checking here???  #####
+
+  return new MPEG1or2Demux(env, inputSource, reclaimWhenLastESDies);
+}
+
+MPEG1or2Demux::SCR::SCR()
+  : highBit(0), remainingBits(0), extension(0), isValid(False) {
+}
+
+void MPEG1or2Demux
+::noteElementaryStreamDeletion(MPEG1or2DemuxedElementaryStream* /*es*/) {
+  if (--fNumOutstandingESs == 0 && fReclaimWhenLastESDies) {
+    Medium::close(this);
+  }
+}
+
+void MPEG1or2Demux::flushInput() {
+  fParser->flushInput();
+}
+
+MPEG1or2DemuxedElementaryStream*
+MPEG1or2Demux::newElementaryStream(u_int8_t streamIdTag) {
+  ++fNumOutstandingESs;
+  fOutput[streamIdTag].isPotentiallyReadable = True;
+  return new MPEG1or2DemuxedElementaryStream(envir(), streamIdTag, *this);
+}
+
+MPEG1or2DemuxedElementaryStream* MPEG1or2Demux::newAudioStream() {
+  unsigned char newAudioStreamTag = 0xC0 | (fNextAudioStreamNumber++&~0xE0);
+      // MPEG audio stream tags are 110x xxxx (binary)
+  return newElementaryStream(newAudioStreamTag);
+}
+
+MPEG1or2DemuxedElementaryStream* MPEG1or2Demux::newVideoStream() {
+  unsigned char newVideoStreamTag = 0xE0 | (fNextVideoStreamNumber++&~0xF0);
+      // MPEG video stream tags are 1110 xxxx (binary)
+  return newElementaryStream(newVideoStreamTag);
+}
+
+// Appropriate one of the reserved stream id tags to mean: return raw PES packets:
+#define RAW_PES 0xFC
+
+MPEG1or2DemuxedElementaryStream* MPEG1or2Demux::newRawPESStream() {
+  return newElementaryStream(RAW_PES);
+}
+
+void MPEG1or2Demux::registerReadInterest(u_int8_t streamIdTag,
+				     unsigned char* to, unsigned maxSize,
+				     FramedSource::afterGettingFunc* afterGettingFunc,
+				     void* afterGettingClientData,
+				     FramedSource::onCloseFunc* onCloseFunc,
+				     void* onCloseClientData) {
+  struct OutputDescriptor& out = fOutput[streamIdTag];
+
+  // Make sure this stream is not already being read:
+  if (out.isCurrentlyAwaitingData) {
+    envir() << "MPEG1or2Demux::registerReadInterest(): attempt to read stream more than once!\n";
+    envir().internalError();
+  }
+
+  out.to = to; out.maxSize = maxSize;
+  out.fAfterGettingFunc = afterGettingFunc;
+  out.afterGettingClientData = afterGettingClientData;
+  out.fOnCloseFunc = onCloseFunc;
+  out.onCloseClientData = onCloseClientData;
+  out.isCurrentlyActive = True;
+  out.isCurrentlyAwaitingData = True;
+  // out.frameSize and out.presentationTime will be set when a frame's read
+
+  ++fNumPendingReads;
+}
+
+Boolean MPEG1or2Demux::useSavedData(u_int8_t streamIdTag,
+				    unsigned char* to, unsigned maxSize,
+				    FramedSource::afterGettingFunc* afterGettingFunc,
+				    void* afterGettingClientData) {
+  struct OutputDescriptor& out = fOutput[streamIdTag];
+  if (out.savedDataHead == NULL) return False; // common case
+
+  unsigned totNumBytesCopied = 0;
+  while (maxSize > 0 && out.savedDataHead != NULL) {
+    OutputDescriptor::SavedData& savedData = *(out.savedDataHead);
+    unsigned char* from = &savedData.data[savedData.numBytesUsed];
+    unsigned numBytesToCopy = savedData.dataSize - savedData.numBytesUsed;
+    if (numBytesToCopy > maxSize) numBytesToCopy = maxSize;
+    memmove(to, from, numBytesToCopy);
+    to += numBytesToCopy;
+    maxSize -= numBytesToCopy;
+    out.savedDataTotalSize -= numBytesToCopy;
+    totNumBytesCopied += numBytesToCopy;
+    savedData.numBytesUsed += numBytesToCopy;
+    if (savedData.numBytesUsed == savedData.dataSize) {
+      out.savedDataHead = savedData.next;
+      if (out.savedDataHead == NULL) out.savedDataTail = NULL;
+      savedData.next = NULL;
+      delete &savedData;
+    }
+  }
+
+  out.isCurrentlyActive = True;
+  if (afterGettingFunc != NULL) {
+    struct timeval presentationTime;
+    presentationTime.tv_sec = 0; presentationTime.tv_usec = 0; // should fix #####
+    (*afterGettingFunc)(afterGettingClientData, totNumBytesCopied,
+			0 /* numTruncatedBytes */, presentationTime,
+			0 /* durationInMicroseconds ?????#####*/);
+  }
+  return True;
+}
+
+void MPEG1or2Demux
+::continueReadProcessing(void* clientData,
+			 unsigned char* /*ptr*/, unsigned /*size*/,
+			 struct timeval /*presentationTime*/) {
+  MPEG1or2Demux* demux = (MPEG1or2Demux*)clientData;
+  demux->continueReadProcessing();
+}
+
+void MPEG1or2Demux::continueReadProcessing() {
+  while (fNumPendingReads > 0) {
+    unsigned char acquiredStreamIdTag = fParser->parse();
+
+    if (acquiredStreamIdTag != 0) {
+      // We were able to acquire a frame from the input.
+      struct OutputDescriptor& newOut = fOutput[acquiredStreamIdTag];
+      newOut.isCurrentlyAwaitingData = False;
+        // indicates that we can be read again
+        // (This needs to be set before the 'after getting' call below,
+        //  in case it tries to read another frame)
+
+      // Call our own 'after getting' function.  Because we're not a 'leaf'
+      // source, we can call this directly, without risking infinite recursion.
+      if (newOut.fAfterGettingFunc != NULL) {
+	(*newOut.fAfterGettingFunc)(newOut.afterGettingClientData,
+				    newOut.frameSize, 0 /* numTruncatedBytes */,
+				    newOut.presentationTime,
+				    0 /* durationInMicroseconds ?????#####*/);
+      --fNumPendingReads;
+      }
+    } else {
+      // We were unable to parse a complete frame from the input, because:
+      // - we had to read more data from the source stream, or
+      // - we found a frame for a stream that was being read, but whose
+      //   reader is not ready to get the frame right now, or
+      // - the source stream has ended.
+      break;
+    }
+  }
+}
+
+void MPEG1or2Demux::getNextFrame(u_int8_t streamIdTag,
+				 unsigned char* to, unsigned maxSize,
+				 FramedSource::afterGettingFunc* afterGettingFunc,
+				 void* afterGettingClientData,
+				 FramedSource::onCloseFunc* onCloseFunc,
+				 void* onCloseClientData) {
+  // First, check whether we have saved data for this stream id:
+  if (useSavedData(streamIdTag, to, maxSize,
+		   afterGettingFunc, afterGettingClientData)) {
+    return;
+  }
+
+  // Then save the parameters of the specified stream id:
+  registerReadInterest(streamIdTag, to, maxSize,
+		       afterGettingFunc, afterGettingClientData,
+		       onCloseFunc, onCloseClientData);
+
+  // Next, if we're the only currently pending read, continue looking for data:
+  if (fNumPendingReads == 1 || fHaveUndeliveredData) {
+    fHaveUndeliveredData = 0;
+    continueReadProcessing();
+  } // otherwise the continued read processing has already been taken care of
+}
+
+void MPEG1or2Demux::stopGettingFrames(u_int8_t streamIdTag) {
+    struct OutputDescriptor& out = fOutput[streamIdTag];
+
+    if (out.isCurrentlyAwaitingData && fNumPendingReads > 0) --fNumPendingReads;
+
+    out.isCurrentlyActive = out.isCurrentlyAwaitingData = False;
+}
+
+void MPEG1or2Demux::handleClosure(void* clientData) {
+  MPEG1or2Demux* demux = (MPEG1or2Demux*)clientData;
+
+  demux->fNumPendingReads = 0;
+
+  // Tell all pending readers that our source has closed.
+  // Note that we need to make a copy of our readers' close functions
+  // (etc.) before we start calling any of them, in case one of them
+  // ends up deleting this.
+  struct {
+    FramedSource::onCloseFunc* fOnCloseFunc;
+    void* onCloseClientData;
+  } savedPending[256];
+  unsigned i, numPending = 0;
+  for (i = 0; i < 256; ++i) {
+    struct OutputDescriptor& out = demux->fOutput[i];
+    if (out.isCurrentlyAwaitingData) {
+      if (out.fOnCloseFunc != NULL) {
+	savedPending[numPending].fOnCloseFunc = out.fOnCloseFunc;
+	savedPending[numPending].onCloseClientData = out.onCloseClientData;
+	++numPending;
+      }
+    }
+    delete out.savedDataHead; out.savedDataHead = out.savedDataTail = NULL;
+    out.savedDataTotalSize = 0;
+    out.isPotentiallyReadable = out.isCurrentlyActive = out.isCurrentlyAwaitingData
+      = False;
+  }
+  for (i = 0; i < numPending; ++i) {
+    (*savedPending[i].fOnCloseFunc)(savedPending[i].onCloseClientData);
+  }
+}
+
+
+////////// MPEGProgramStreamParser implementation //////////
+
+#include <string.h>
+
+MPEGProgramStreamParser::MPEGProgramStreamParser(MPEG1or2Demux* usingDemux,
+						 FramedSource* inputSource)
+  : StreamParser(inputSource, MPEG1or2Demux::handleClosure, usingDemux,
+		 &MPEG1or2Demux::continueReadProcessing, usingDemux),
+  fUsingDemux(usingDemux), fCurrentParseState(PARSING_PACK_HEADER) {
+}
+
+MPEGProgramStreamParser::~MPEGProgramStreamParser() {
+}
+
+void MPEGProgramStreamParser::setParseState(MPEGParseState parseState) {
+  fCurrentParseState = parseState;
+  saveParserState();
+}
+
+unsigned char MPEGProgramStreamParser::parse() {
+  unsigned char acquiredStreamTagId = 0;
+
+  try {
+    do {
+      switch (fCurrentParseState) {
+      case PARSING_PACK_HEADER: {
+	parsePackHeader();
+	break;
+      }
+      case PARSING_SYSTEM_HEADER: {
+	parseSystemHeader();
+	break;
+      }
+      case PARSING_PES_PACKET: {
+	acquiredStreamTagId = parsePESPacket();
+	break;
+      }
+      }
+    } while(acquiredStreamTagId == 0);
+
+    return acquiredStreamTagId;
+  } catch (int /*e*/) {
+#ifdef DEBUG
+    fprintf(stderr, "MPEGProgramStreamParser::parse() EXCEPTION (This is normal behavior - *not* an error)\n");
+    fflush(stderr);
+#endif
+    return 0;  // the parsing got interrupted
+  }
+}
+
+#define PACK_START_CODE          0x000001BA
+#define SYSTEM_HEADER_START_CODE 0x000001BB
+#define PACKET_START_CODE_PREFIX 0x00000100
+
+static inline Boolean isPacketStartCode(unsigned code) {
+  return (code&0xFFFFFF00) == PACKET_START_CODE_PREFIX
+    && code > SYSTEM_HEADER_START_CODE;
+}
+
+void MPEGProgramStreamParser::parsePackHeader() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing pack header\n"); fflush(stderr);
+#endif
+  unsigned first4Bytes;
+  while (1) {
+    first4Bytes = test4Bytes();
+
+    // We're supposed to have a pack header here, but check also for
+    // a system header or a PES packet, just in case:
+    if (first4Bytes == PACK_START_CODE) {
+      skipBytes(4);
+      break;
+    } else if (first4Bytes == SYSTEM_HEADER_START_CODE) {
+#ifdef DEBUG
+      fprintf(stderr, "found system header instead of pack header\n");
+#endif
+      setParseState(PARSING_SYSTEM_HEADER);
+      return;
+    } else if (isPacketStartCode(first4Bytes)) {
+#ifdef DEBUG
+      fprintf(stderr, "found packet start code 0x%02x instead of pack header\n", first4Bytes);
+#endif
+      setParseState(PARSING_PES_PACKET);
+      return;
+    }
+
+    setParseState(PARSING_PACK_HEADER); // ensures we progress over bad data
+    if ((first4Bytes&0xFF) > 1) { // a system code definitely doesn't start here
+      skipBytes(4);
+    } else {
+      skipBytes(1);
+    }
+  }
+
+  // The size of the pack header differs depending on whether it's
+  // MPEG-1 or MPEG-2.  The next byte tells us this:
+  unsigned char nextByte = get1Byte();
+  MPEG1or2Demux::SCR& scr = fUsingDemux->fLastSeenSCR; // alias
+  if ((nextByte&0xF0) == 0x20) { // MPEG-1
+    fUsingDemux->fMPEGversion = 1;
+    scr.highBit =  (nextByte&0x08)>>3;
+    scr.remainingBits = (nextByte&0x06)<<29;
+    unsigned next4Bytes = get4Bytes();
+    scr.remainingBits |= (next4Bytes&0xFFFE0000)>>2;
+    scr.remainingBits |= (next4Bytes&0x0000FFFE)>>1;
+    scr.extension = 0;
+    scr.isValid = True;
+    skipBits(24);
+
+#if defined(DEBUG_TIMESTAMPS) || defined(DEBUG_SCR_TIMESTAMPS)
+    fprintf(stderr, "pack hdr system_clock_reference_base: 0x%x",
+	    scr.highBit);
+    fprintf(stderr, "%08x\n", scr.remainingBits);
+#endif
+  } else if ((nextByte&0xC0) == 0x40) { // MPEG-2
+    fUsingDemux->fMPEGversion = 2;
+    scr.highBit =  (nextByte&0x20)>>5;
+    scr.remainingBits = (nextByte&0x18)<<27;
+    scr.remainingBits |= (nextByte&0x03)<<28;
+    unsigned next4Bytes = get4Bytes();
+    scr.remainingBits |= (next4Bytes&0xFFF80000)>>4;
+    scr.remainingBits |= (next4Bytes&0x0003FFF8)>>3;
+    scr.extension = (next4Bytes&0x00000003)<<7;
+    next4Bytes = get4Bytes();
+    scr.extension |= (next4Bytes&0xFE000000)>>25;
+    scr.isValid = True;
+    skipBits(5);
+
+#if defined(DEBUG_TIMESTAMPS) || defined(DEBUG_SCR_TIMESTAMPS)
+    fprintf(stderr, "pack hdr system_clock_reference_base: 0x%x",
+	    scr.highBit);
+    fprintf(stderr, "%08x\n", scr.remainingBits);
+    fprintf(stderr, "pack hdr system_clock_reference_extension: 0x%03x\n",
+	    scr.extension);
+#endif
+    unsigned char pack_stuffing_length = getBits(3);
+    skipBytes(pack_stuffing_length);
+  } else { // unknown
+    fUsingDemux->envir() << "StreamParser::parsePack() saw strange byte following pack_start_code\n";
+  }
+
+  // Check for a System Header next:
+  setParseState(PARSING_SYSTEM_HEADER);
+}
+
+void MPEGProgramStreamParser::parseSystemHeader() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing system header\n"); fflush(stderr);
+#endif
+  unsigned next4Bytes = test4Bytes();
+  if (next4Bytes != SYSTEM_HEADER_START_CODE) {
+    // The system header was optional.  Look for a PES Packet instead:
+    setParseState(PARSING_PES_PACKET);
+    return;
+  }
+
+#ifdef DEBUG
+  fprintf(stderr, "saw system_header_start_code\n"); fflush(stderr);
+#endif
+  skipBytes(4); // we've already seen the system_header_start_code
+
+  unsigned short remaining_header_length = get2Bytes();
+
+  // According to the MPEG-1 and MPEG-2 specs, "remaining_header_length" should be
+  // at least 6 bytes.  Check this now:
+  if (remaining_header_length < 6) {
+    fUsingDemux->envir() << "StreamParser::parseSystemHeader(): saw strange header_length: "
+			  << remaining_header_length << " < 6\n";
+  }
+  skipBytes(remaining_header_length);
+
+  // Check for a PES Packet next:
+  setParseState(PARSING_PES_PACKET);
+}
+
+#define private_stream_1 0xBD
+#define private_stream_2 0xBF
+
+// A test for stream ids that are exempt from normal PES packet header parsing
+Boolean MPEGProgramStreamParser
+::isSpecialStreamId(unsigned char stream_id) const {
+  if (stream_id == RAW_PES) return True; // hack
+
+  if (fUsingDemux->fMPEGversion == 1) {
+    return stream_id == private_stream_2;
+  } else { // assume MPEG-2
+    if (stream_id <= private_stream_2) {
+      return stream_id != private_stream_1;
+    } else if ((stream_id&0xF0) == 0xF0) {
+      unsigned char lower4Bits = stream_id&0x0F;
+      return lower4Bits <= 2 || lower4Bits == 0x8 || lower4Bits == 0xF;
+    } else {
+      return False;
+    }
+  }
+}
+
+#define READER_NOT_READY 2
+
+unsigned char MPEGProgramStreamParser::parsePESPacket() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing PES packet\n"); fflush(stderr);
+#endif
+  unsigned next4Bytes = test4Bytes();
+  if (!isPacketStartCode(next4Bytes)) {
+    // The PES Packet was optional.  Look for a Pack Header instead:
+    setParseState(PARSING_PACK_HEADER);
+    return 0;
+  }
+
+#ifdef DEBUG
+  fprintf(stderr, "saw packet_start_code_prefix\n"); fflush(stderr);
+#endif
+  skipBytes(3); // we've already seen the packet_start_code_prefix
+
+  unsigned char stream_id = get1Byte();
+#if defined(DEBUG) || defined(DEBUG_TIMESTAMPS)
+  unsigned char streamNum = stream_id;
+  char const* streamTypeStr;
+  if ((stream_id&0xE0) == 0xC0) {
+    streamTypeStr = "audio";
+    streamNum = stream_id&~0xE0;
+  } else if ((stream_id&0xF0) == 0xE0) {
+    streamTypeStr = "video";
+    streamNum = stream_id&~0xF0;
+  } else if (stream_id == 0xbc) {
+    streamTypeStr = "reserved";
+  } else if (stream_id == 0xbd) {
+    streamTypeStr = "private_1";
+  } else if (stream_id == 0xbe) {
+    streamTypeStr = "padding";
+  } else if (stream_id == 0xbf) {
+    streamTypeStr = "private_2";
+  } else {
+    streamTypeStr = "unknown";
+  }
+#endif
+#ifdef DEBUG
+  static unsigned frameCount = 1;
+  fprintf(stderr, "%d, saw %s stream: 0x%02x\n", frameCount, streamTypeStr, streamNum); fflush(stderr);
+#endif
+
+  unsigned short PES_packet_length = get2Bytes();
+#ifdef DEBUG
+  fprintf(stderr, "PES_packet_length: %d\n", PES_packet_length); fflush(stderr);
+#endif
+
+  // Parse over the rest of the header, until we get to the packet data itself.
+  // This varies depending upon the MPEG version:
+  if (fUsingDemux->fOutput[RAW_PES].isPotentiallyReadable) {
+    // Hack: We've been asked to return raw PES packets, for every stream:
+    stream_id = RAW_PES;
+  }
+  unsigned savedParserOffset = curOffset();
+#ifdef DEBUG_TIMESTAMPS
+  unsigned char pts_highBit = 0;
+  unsigned pts_remainingBits = 0;
+  unsigned char dts_highBit = 0;
+  unsigned dts_remainingBits = 0;
+#endif
+  if (fUsingDemux->fMPEGversion == 1) {
+    if (!isSpecialStreamId(stream_id)) {
+      unsigned char nextByte;
+      while ((nextByte = get1Byte()) == 0xFF) { // stuffing_byte
+      }
+      if ((nextByte&0xC0) == 0x40) { // '01'
+	skipBytes(1);
+	nextByte = get1Byte();
+      }
+      if ((nextByte&0xF0) == 0x20) { // '0010'
+#ifdef DEBUG_TIMESTAMPS
+	pts_highBit =  (nextByte&0x08)>>3;
+	pts_remainingBits = (nextByte&0x06)<<29;
+	unsigned next4Bytes = get4Bytes();
+	pts_remainingBits |= (next4Bytes&0xFFFE0000)>>2;
+	pts_remainingBits |= (next4Bytes&0x0000FFFE)>>1;
+#else
+	skipBytes(4);
+#endif
+      } else if ((nextByte&0xF0) == 0x30) { // '0011'
+#ifdef DEBUG_TIMESTAMPS
+	pts_highBit =  (nextByte&0x08)>>3;
+	pts_remainingBits = (nextByte&0x06)<<29;
+	unsigned next4Bytes = get4Bytes();
+	pts_remainingBits |= (next4Bytes&0xFFFE0000)>>2;
+	pts_remainingBits |= (next4Bytes&0x0000FFFE)>>1;
+
+	nextByte = get1Byte();
+	dts_highBit =  (nextByte&0x08)>>3;
+	dts_remainingBits = (nextByte&0x06)<<29;
+	next4Bytes = get4Bytes();
+	dts_remainingBits |= (next4Bytes&0xFFFE0000)>>2;
+	dts_remainingBits |= (next4Bytes&0x0000FFFE)>>1;
+#else
+	skipBytes(9);
+#endif
+      }
+    }
+  } else { // assume MPEG-2
+    if (!isSpecialStreamId(stream_id)) {
+      // Fields in the next 3 bytes determine the size of the rest:
+      unsigned next3Bytes = getBits(24);
+#ifdef DEBUG_TIMESTAMPS
+      unsigned char PTS_DTS_flags       = (next3Bytes&0x00C000)>>14;
+#endif
+#ifdef undef
+      unsigned char ESCR_flag           = (next3Bytes&0x002000)>>13;
+      unsigned char ES_rate_flag        = (next3Bytes&0x001000)>>12;
+      unsigned char DSM_trick_mode_flag = (next3Bytes&0x000800)>>11;
+#endif
+      unsigned char PES_header_data_length = (next3Bytes&0x0000FF);
+#ifdef DEBUG
+      fprintf(stderr, "PES_header_data_length: 0x%02x\n", PES_header_data_length); fflush(stderr);
+#endif
+#ifdef DEBUG_TIMESTAMPS
+      if (PTS_DTS_flags == 0x2 && PES_header_data_length >= 5) {
+	unsigned char nextByte = get1Byte();
+	pts_highBit =  (nextByte&0x08)>>3;
+	pts_remainingBits = (nextByte&0x06)<<29;
+	unsigned next4Bytes = get4Bytes();
+	pts_remainingBits |= (next4Bytes&0xFFFE0000)>>2;
+	pts_remainingBits |= (next4Bytes&0x0000FFFE)>>1;
+
+	skipBytes(PES_header_data_length-5);
+      } else if (PTS_DTS_flags == 0x3 && PES_header_data_length >= 10) {
+	unsigned char nextByte = get1Byte();
+	pts_highBit =  (nextByte&0x08)>>3;
+	pts_remainingBits = (nextByte&0x06)<<29;
+	unsigned next4Bytes = get4Bytes();
+	pts_remainingBits |= (next4Bytes&0xFFFE0000)>>2;
+	pts_remainingBits |= (next4Bytes&0x0000FFFE)>>1;
+
+	nextByte = get1Byte();
+	dts_highBit =  (nextByte&0x08)>>3;
+	dts_remainingBits = (nextByte&0x06)<<29;
+	next4Bytes = get4Bytes();
+	dts_remainingBits |= (next4Bytes&0xFFFE0000)>>2;
+	dts_remainingBits |= (next4Bytes&0x0000FFFE)>>1;
+
+	skipBytes(PES_header_data_length-10);
+      }
+#else
+      skipBytes(PES_header_data_length);
+#endif
+    }
+  }
+#ifdef DEBUG_TIMESTAMPS
+  fprintf(stderr, "%s stream, ", streamTypeStr);
+  fprintf(stderr, "packet presentation_time_stamp: 0x%x", pts_highBit);
+  fprintf(stderr, "%08x\n", pts_remainingBits);
+  fprintf(stderr, "\t\tpacket decoding_time_stamp: 0x%x", dts_highBit);
+  fprintf(stderr, "%08x\n", dts_remainingBits);
+#endif
+
+  // The rest of the packet will be the "PES_packet_data_byte"s
+  // Make sure that "PES_packet_length" was consistent with where we are now:
+  unsigned char acquiredStreamIdTag = 0;
+  unsigned currentParserOffset = curOffset();
+  unsigned bytesSkipped = currentParserOffset - savedParserOffset;
+  if (stream_id == RAW_PES) {
+    restoreSavedParserState(); // so we deliver from the beginning of the PES packet
+    PES_packet_length += 6; // to include the whole of the PES packet
+    bytesSkipped = 0;
+  }
+  if (PES_packet_length < bytesSkipped) {
+    fUsingDemux->envir() << "StreamParser::parsePESPacket(): saw inconsistent PES_packet_length "
+			  << PES_packet_length << " < "
+			  << bytesSkipped << "\n";
+  } else {
+    PES_packet_length -= bytesSkipped;
+#ifdef DEBUG
+    unsigned next4Bytes = test4Bytes();
+#endif
+
+    // Check whether our using source is interested in this stream type.
+    // If so, deliver the frame to him:
+    MPEG1or2Demux::OutputDescriptor_t& out = fUsingDemux->fOutput[stream_id];
+    if (out.isCurrentlyAwaitingData) {
+      unsigned numBytesToCopy;
+      if (PES_packet_length > out.maxSize) {
+	fUsingDemux->envir() << "MPEGProgramStreamParser::parsePESPacket() error: PES_packet_length ("
+			      << PES_packet_length
+			      << ") exceeds max frame size asked for ("
+			      << out.maxSize << ")\n";
+	numBytesToCopy = out.maxSize;
+      } else {
+	numBytesToCopy = PES_packet_length;
+      }
+
+      getBytes(out.to, numBytesToCopy);
+      out.frameSize = numBytesToCopy;
+#ifdef DEBUG
+      fprintf(stderr, "%d, %d bytes of PES_packet_data (out.maxSize: %d); first 4 bytes: 0x%08x\n", frameCount, numBytesToCopy, out.maxSize, next4Bytes); fflush(stderr);
+#endif
+      // set out.presentationTime later #####
+      acquiredStreamIdTag = stream_id;
+      PES_packet_length -= numBytesToCopy;
+    } else if (out.isCurrentlyActive) {
+      // Someone has been reading this stream, but isn't right now.
+      // We can't deliver this frame until he asks for it, so punt for now.
+      // The next time he asks for a frame, he'll get it.
+#ifdef DEBUG
+      fprintf(stderr, "%d, currently undeliverable PES data; first 4 bytes: 0x%08x - currently undeliverable!\n", frameCount, next4Bytes); fflush(stderr);
+#endif
+      restoreSavedParserState(); // so we read from the beginning next time
+      fUsingDemux->fHaveUndeliveredData = True;
+      throw READER_NOT_READY;
+    } else if (out.isPotentiallyReadable &&
+	       out.savedDataTotalSize + PES_packet_length < 1000000 /*limit*/) {
+      // Someone is interested in this stream, but hasn't begun reading it yet.
+      // Save this data, so that the reader will get it when he later asks for it.
+      unsigned char* buf = new unsigned char[PES_packet_length];
+      getBytes(buf, PES_packet_length);
+      MPEG1or2Demux::OutputDescriptor::SavedData* savedData
+	= new MPEG1or2Demux::OutputDescriptor::SavedData(buf, PES_packet_length);
+      if (out.savedDataHead == NULL) {
+	out.savedDataHead = out.savedDataTail = savedData;
+      } else {
+	out.savedDataTail->next = savedData;
+	out.savedDataTail = savedData;
+      }
+      out.savedDataTotalSize += PES_packet_length;
+      PES_packet_length = 0;
+    }
+    skipBytes(PES_packet_length);
+  }
+
+  // Check for another PES Packet next:
+  setParseState(PARSING_PES_PACKET);
+#ifdef DEBUG
+  ++frameCount;
+#endif
+ return acquiredStreamIdTag;
+}
diff --git a/liveMedia/MPEG1or2DemuxedElementaryStream.cpp b/liveMedia/MPEG1or2DemuxedElementaryStream.cpp
new file mode 100644
index 0000000..7da5805
--- /dev/null
+++ b/liveMedia/MPEG1or2DemuxedElementaryStream.cpp
@@ -0,0 +1,88 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A MPEG 1 or 2 Elementary Stream, demultiplexed from a Program Stream
+// Implementation
+
+#include "MPEG1or2DemuxedElementaryStream.hh"
+
+////////// MPEG1or2DemuxedElementaryStream //////////
+
+MPEG1or2DemuxedElementaryStream::
+MPEG1or2DemuxedElementaryStream(UsageEnvironment& env, u_int8_t streamIdTag,
+			    MPEG1or2Demux& sourceDemux)
+  : FramedSource(env),
+    fOurStreamIdTag(streamIdTag), fOurSourceDemux(sourceDemux), fMPEGversion(0) {
+  // Set our MIME type string for known media types:
+  if ((streamIdTag&0xE0) == 0xC0) {
+    fMIMEtype = "audio/MPEG";
+  } else if ((streamIdTag&0xF0) == 0xE0) {
+    fMIMEtype = "video/MPEG";
+  } else {
+    fMIMEtype = MediaSource::MIMEtype();
+  }
+}
+
+MPEG1or2DemuxedElementaryStream::~MPEG1or2DemuxedElementaryStream() {
+  fOurSourceDemux.noteElementaryStreamDeletion(this);
+}
+
+void MPEG1or2DemuxedElementaryStream::doGetNextFrame() {
+  fOurSourceDemux.getNextFrame(fOurStreamIdTag, fTo, fMaxSize,
+			       afterGettingFrame, this,
+			       handleClosure, this);
+}
+
+void MPEG1or2DemuxedElementaryStream::doStopGettingFrames() {
+  fOurSourceDemux.stopGettingFrames(fOurStreamIdTag);
+}
+
+char const* MPEG1or2DemuxedElementaryStream::MIMEtype() const {
+  return fMIMEtype;
+}
+
+unsigned MPEG1or2DemuxedElementaryStream::maxFrameSize() const {
+  return 6+65535;
+      // because the MPEG spec allows for PES packets as large as
+      // (6 + 65535) bytes (header + data)
+}
+
+void MPEG1or2DemuxedElementaryStream
+::afterGettingFrame(void* clientData,
+		    unsigned frameSize, unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned durationInMicroseconds) {
+  MPEG1or2DemuxedElementaryStream* stream
+    = (MPEG1or2DemuxedElementaryStream*)clientData;
+  stream->afterGettingFrame1(frameSize, numTruncatedBytes,
+			     presentationTime, durationInMicroseconds);
+}
+
+void MPEG1or2DemuxedElementaryStream
+::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+		     struct timeval presentationTime,
+		     unsigned durationInMicroseconds) {
+  fFrameSize = frameSize;
+  fNumTruncatedBytes = numTruncatedBytes;
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+
+  fLastSeenSCR = fOurSourceDemux.lastSeenSCR();
+  fMPEGversion = fOurSourceDemux.mpegVersion();
+
+  FramedSource::afterGetting(this);
+}
diff --git a/liveMedia/MPEG1or2DemuxedServerMediaSubsession.cpp b/liveMedia/MPEG1or2DemuxedServerMediaSubsession.cpp
new file mode 100644
index 0000000..6c5dd1a
--- /dev/null
+++ b/liveMedia/MPEG1or2DemuxedServerMediaSubsession.cpp
@@ -0,0 +1,134 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a MPEG-1 or 2 demuxer.
+// Implementation
+
+#include "MPEG1or2DemuxedServerMediaSubsession.hh"
+#include "MPEG1or2AudioStreamFramer.hh"
+#include "MPEG1or2AudioRTPSink.hh"
+#include "MPEG1or2VideoStreamFramer.hh"
+#include "MPEG1or2VideoRTPSink.hh"
+#include "AC3AudioStreamFramer.hh"
+#include "AC3AudioRTPSink.hh"
+#include "ByteStreamFileSource.hh"
+
+MPEG1or2DemuxedServerMediaSubsession* MPEG1or2DemuxedServerMediaSubsession
+::createNew(MPEG1or2FileServerDemux& demux, u_int8_t streamIdTag,
+	    Boolean reuseFirstSource, Boolean iFramesOnly, double vshPeriod) {
+  return new MPEG1or2DemuxedServerMediaSubsession(demux, streamIdTag,
+						  reuseFirstSource,
+						  iFramesOnly, vshPeriod);
+}
+
+MPEG1or2DemuxedServerMediaSubsession
+::MPEG1or2DemuxedServerMediaSubsession(MPEG1or2FileServerDemux& demux,
+				       u_int8_t streamIdTag, Boolean reuseFirstSource,
+				       Boolean iFramesOnly, double vshPeriod)
+  : OnDemandServerMediaSubsession(demux.envir(), reuseFirstSource),
+    fOurDemux(demux), fStreamIdTag(streamIdTag),
+    fIFramesOnly(iFramesOnly), fVSHPeriod(vshPeriod) {
+}
+
+MPEG1or2DemuxedServerMediaSubsession::~MPEG1or2DemuxedServerMediaSubsession() {
+}
+
+FramedSource* MPEG1or2DemuxedServerMediaSubsession
+::createNewStreamSource(unsigned clientSessionId, unsigned& estBitrate) {
+  FramedSource* es = NULL;
+  do {
+    es = fOurDemux.newElementaryStream(clientSessionId, fStreamIdTag);
+    if (es == NULL) break;
+
+    if ((fStreamIdTag&0xF0) == 0xC0 /*MPEG audio*/) {
+      estBitrate = 128; // kbps, estimate
+      return MPEG1or2AudioStreamFramer::createNew(envir(), es);
+    } else if ((fStreamIdTag&0xF0) == 0xE0 /*video*/) {
+      estBitrate = 500; // kbps, estimate
+      return MPEG1or2VideoStreamFramer::createNew(envir(), es,
+						  fIFramesOnly, fVSHPeriod);
+    } else if (fStreamIdTag == 0xBD /*AC-3 audio*/) {
+      estBitrate = 192; // kbps, estimate
+      return AC3AudioStreamFramer::createNew(envir(), es, 0x80);
+    } else { // unknown stream type
+      break;
+    }
+  } while (0);
+
+  // An error occurred:
+  Medium::close(es);
+  return NULL;
+}
+
+RTPSink* MPEG1or2DemuxedServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic,
+		   FramedSource* inputSource) {
+  if ((fStreamIdTag&0xF0) == 0xC0 /*MPEG audio*/) {
+    return MPEG1or2AudioRTPSink::createNew(envir(), rtpGroupsock);
+  } else if ((fStreamIdTag&0xF0) == 0xE0 /*video*/) {
+    return MPEG1or2VideoRTPSink::createNew(envir(), rtpGroupsock);
+  } else if (fStreamIdTag == 0xBD /*AC-3 audio*/) {
+    // Get the sampling frequency from the audio source; use it for the RTP frequency:
+    AC3AudioStreamFramer* audioSource
+      = (AC3AudioStreamFramer*)inputSource;
+    return AC3AudioRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+				      audioSource->samplingRate());
+  } else {
+    return NULL;
+  }
+}
+
+void MPEG1or2DemuxedServerMediaSubsession
+::seekStreamSource(FramedSource* inputSource, double& seekNPT, double /*streamDuration*/, u_int64_t& /*numBytes*/) {
+  float const dur = duration();
+  unsigned const size = fOurDemux.fileSize();
+  unsigned absBytePosition = dur == 0.0 ? 0 : (unsigned)((seekNPT/dur)*size);
+
+  // "inputSource" is a 'framer'
+  // Flush its data, to account for the seek that we're about to do:
+  if ((fStreamIdTag&0xF0) == 0xC0 /*MPEG audio*/) {
+    MPEG1or2AudioStreamFramer* framer = (MPEG1or2AudioStreamFramer*)inputSource;
+    framer->flushInput();
+  } else if ((fStreamIdTag&0xF0) == 0xE0 /*video*/) {
+    MPEG1or2VideoStreamFramer* framer = (MPEG1or2VideoStreamFramer*)inputSource;
+    framer->flushInput();
+  }
+
+  // "inputSource" is a filter; its input source is the original elem stream source:
+  MPEG1or2DemuxedElementaryStream* elemStreamSource
+    = (MPEG1or2DemuxedElementaryStream*)(((FramedFilter*)inputSource)->inputSource());
+
+  // Next, get the original source demux:
+  MPEG1or2Demux& sourceDemux = elemStreamSource->sourceDemux();
+
+  // and flush its input buffers:
+  sourceDemux.flushInput();
+
+  // Then, get the original input file stream from the source demux:
+  ByteStreamFileSource* inputFileSource
+    = (ByteStreamFileSource*)(sourceDemux.inputSource());
+  // Note: We can make that cast, because we know that the demux was originally
+  // created from a "ByteStreamFileSource".
+
+  // Do the appropriate seek within the input file stream:
+  inputFileSource->seekToByteAbsolute(absBytePosition);
+}
+
+float MPEG1or2DemuxedServerMediaSubsession::duration() const {
+  return fOurDemux.fileDuration();
+}
diff --git a/liveMedia/MPEG1or2FileServerDemux.cpp b/liveMedia/MPEG1or2FileServerDemux.cpp
new file mode 100644
index 0000000..b668e39
--- /dev/null
+++ b/liveMedia/MPEG1or2FileServerDemux.cpp
@@ -0,0 +1,264 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A server demultiplexer for a MPEG 1 or 2 Program Stream
+// Implementation
+
+#include "MPEG1or2FileServerDemux.hh"
+#include "MPEG1or2DemuxedServerMediaSubsession.hh"
+#include "ByteStreamFileSource.hh"
+
+MPEG1or2FileServerDemux*
+MPEG1or2FileServerDemux::createNew(UsageEnvironment& env, char const* fileName,
+				   Boolean reuseFirstSource) {
+  return new MPEG1or2FileServerDemux(env, fileName, reuseFirstSource);
+}
+
+static float MPEG1or2ProgramStreamFileDuration(UsageEnvironment& env,
+					       char const* fileName,
+					       unsigned& fileSize); // forward
+MPEG1or2FileServerDemux
+::MPEG1or2FileServerDemux(UsageEnvironment& env, char const* fileName,
+			  Boolean reuseFirstSource)
+  : Medium(env),
+    fReuseFirstSource(reuseFirstSource),
+    fSession0Demux(NULL), fLastCreatedDemux(NULL), fLastClientSessionId(~0) {
+  fFileName = strDup(fileName);
+  fFileDuration = MPEG1or2ProgramStreamFileDuration(env, fileName, fFileSize);
+}
+
+MPEG1or2FileServerDemux::~MPEG1or2FileServerDemux() {
+  Medium::close(fSession0Demux);
+  delete[] (char*)fFileName;
+}
+
+ServerMediaSubsession*
+MPEG1or2FileServerDemux::newAudioServerMediaSubsession() {
+  return MPEG1or2DemuxedServerMediaSubsession::createNew(*this, 0xC0, fReuseFirstSource);
+}
+
+ServerMediaSubsession*
+MPEG1or2FileServerDemux::newVideoServerMediaSubsession(Boolean iFramesOnly,
+						       double vshPeriod) {
+  return MPEG1or2DemuxedServerMediaSubsession::createNew(*this, 0xE0, fReuseFirstSource,
+							 iFramesOnly, vshPeriod);
+}
+
+ServerMediaSubsession*
+MPEG1or2FileServerDemux::newAC3AudioServerMediaSubsession() {
+  return MPEG1or2DemuxedServerMediaSubsession::createNew(*this, 0xBD, fReuseFirstSource);
+  // because, in a VOB file, the AC3 audio has stream id 0xBD
+}
+
+MPEG1or2DemuxedElementaryStream*
+MPEG1or2FileServerDemux::newElementaryStream(unsigned clientSessionId,
+					     u_int8_t streamIdTag) {
+  MPEG1or2Demux* demuxToUse;
+  if (clientSessionId == 0) {
+    // 'Session 0' is treated especially, because its audio & video streams
+    // are created and destroyed one-at-a-time, rather than both streams being
+    // created, and then (later) both streams being destroyed (as is the case
+    // for other ('real') session ids).  Because of this, a separate demux is
+    // used for session 0, and its deletion is managed by us, rather than
+    // happening automatically.
+    if (fSession0Demux == NULL) {
+      // Open our input file as a 'byte-stream file source':
+      ByteStreamFileSource* fileSource
+	= ByteStreamFileSource::createNew(envir(), fFileName);
+      if (fileSource == NULL) return NULL;
+      fSession0Demux = MPEG1or2Demux::createNew(envir(), fileSource, False/*note!*/);
+    }
+    demuxToUse = fSession0Demux;
+  } else {
+    // First, check whether this is a new client session.  If so, create a new
+    // demux for it:
+    if (clientSessionId != fLastClientSessionId) {
+      // Open our input file as a 'byte-stream file source':
+      ByteStreamFileSource* fileSource
+	= ByteStreamFileSource::createNew(envir(), fFileName);
+      if (fileSource == NULL) return NULL;
+
+      fLastCreatedDemux = MPEG1or2Demux::createNew(envir(), fileSource, True);
+      // Note: We tell the demux to delete itself when its last
+      // elementary stream is deleted.
+      fLastClientSessionId = clientSessionId;
+      // Note: This code relies upon the fact that the creation of streams for
+      // different client sessions do not overlap - so one "MPEG1or2Demux" is used
+      // at a time.
+    }
+    demuxToUse = fLastCreatedDemux;
+  }
+
+  if (demuxToUse == NULL) return NULL; // shouldn't happen
+
+  return demuxToUse->newElementaryStream(streamIdTag);
+}
+
+
+static Boolean getMPEG1or2TimeCode(FramedSource* dataSource,
+				   MPEG1or2Demux& parentDemux,
+				   Boolean returnFirstSeenCode,
+				   float& timeCode); // forward
+
+static float MPEG1or2ProgramStreamFileDuration(UsageEnvironment& env,
+					       char const* fileName,
+					       unsigned& fileSize) {
+  FramedSource* dataSource = NULL;
+  float duration = 0.0; // until we learn otherwise
+  fileSize = 0; // ditto
+
+  do {
+    // Open the input file as a 'byte-stream file source':
+    ByteStreamFileSource* fileSource = ByteStreamFileSource::createNew(env, fileName);
+    if (fileSource == NULL) break;
+    dataSource = fileSource;
+
+    fileSize = (unsigned)(fileSource->fileSize());
+    if (fileSize == 0) break;
+
+    // Create a MPEG demultiplexor that reads from that source.
+    MPEG1or2Demux* baseDemux = MPEG1or2Demux::createNew(env, dataSource, True);
+    if (baseDemux == NULL) break;
+
+    // Create, from this, a source that returns raw PES packets:
+    dataSource = baseDemux->newRawPESStream();
+
+    // Read the first time code from the file:
+    float firstTimeCode;
+    if (!getMPEG1or2TimeCode(dataSource, *baseDemux, True, firstTimeCode)) break;
+
+    // Then, read the last time code from the file.
+    // (Before doing this, flush the demux's input buffers,
+    //  and seek towards the end of the file, for efficiency.)
+    baseDemux->flushInput();
+    unsigned const startByteFromEnd = 100000;
+    unsigned newFilePosition
+      = fileSize < startByteFromEnd ? 0 : fileSize - startByteFromEnd;
+    if (newFilePosition > 0) fileSource->seekToByteAbsolute(newFilePosition);
+
+    float lastTimeCode;
+    if (!getMPEG1or2TimeCode(dataSource, *baseDemux, False, lastTimeCode)) break;
+
+    // Take the difference between these time codes as being the file duration:
+    float timeCodeDiff = lastTimeCode - firstTimeCode;
+    if (timeCodeDiff < 0) break;
+    duration = timeCodeDiff;
+  } while (0);
+
+  Medium::close(dataSource);
+  return duration;
+}
+
+#define MFSD_DUMMY_SINK_BUFFER_SIZE (6+65535) /* large enough for a PES packet */
+
+class MFSD_DummySink: public MediaSink {
+public:
+  MFSD_DummySink(MPEG1or2Demux& demux, Boolean returnFirstSeenCode);
+  virtual ~MFSD_DummySink();
+
+  char watchVariable;
+
+private:
+  // redefined virtual function:
+  virtual Boolean continuePlaying();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame1();
+
+private:
+  MPEG1or2Demux& fOurDemux;
+  Boolean fReturnFirstSeenCode;
+  unsigned char fBuf[MFSD_DUMMY_SINK_BUFFER_SIZE];
+};
+
+static void afterPlayingMFSD_DummySink(MFSD_DummySink* sink); // forward
+static float computeSCRTimeCode(MPEG1or2Demux::SCR const& scr); // forward
+
+static Boolean getMPEG1or2TimeCode(FramedSource* dataSource,
+				   MPEG1or2Demux& parentDemux,
+				   Boolean returnFirstSeenCode,
+				   float& timeCode) {
+  // Start reading through "dataSource", until we see a SCR time code:
+  parentDemux.lastSeenSCR().isValid = False;
+  UsageEnvironment& env = dataSource->envir(); // alias
+  MFSD_DummySink sink(parentDemux, returnFirstSeenCode);
+  sink.startPlaying(*dataSource,
+		    (MediaSink::afterPlayingFunc*)afterPlayingMFSD_DummySink, &sink);
+  env.taskScheduler().doEventLoop(&sink.watchVariable);
+
+  timeCode = computeSCRTimeCode(parentDemux.lastSeenSCR());
+  return parentDemux.lastSeenSCR().isValid;
+}
+
+
+////////// MFSD_DummySink implementation //////////
+
+MFSD_DummySink::MFSD_DummySink(MPEG1or2Demux& demux, Boolean returnFirstSeenCode)
+  : MediaSink(demux.envir()),
+    watchVariable(0), fOurDemux(demux), fReturnFirstSeenCode(returnFirstSeenCode) {
+}
+
+MFSD_DummySink::~MFSD_DummySink() {
+}
+
+Boolean MFSD_DummySink::continuePlaying() {
+  if (fSource == NULL) return False; // sanity check
+
+  fSource->getNextFrame(fBuf, sizeof fBuf,
+			afterGettingFrame, this,
+			onSourceClosure, this);
+  return True;
+}
+
+void MFSD_DummySink::afterGettingFrame(void* clientData, unsigned /*frameSize*/,
+				  unsigned /*numTruncatedBytes*/,
+				  struct timeval /*presentationTime*/,
+				  unsigned /*durationInMicroseconds*/) {
+  MFSD_DummySink* sink = (MFSD_DummySink*)clientData;
+  sink->afterGettingFrame1();
+}
+
+void MFSD_DummySink::afterGettingFrame1() {
+  if (fReturnFirstSeenCode && fOurDemux.lastSeenSCR().isValid) {
+    // We were asked to return the first SCR that we saw, and we've seen one,
+    // so we're done.  (Handle this as if the input source had closed.)
+    onSourceClosure();
+    return;
+  }
+
+  continuePlaying();
+}
+
+static void afterPlayingMFSD_DummySink(MFSD_DummySink* sink) {
+  // Return from the "doEventLoop()" call:
+  sink->watchVariable = ~0;
+}
+
+static float computeSCRTimeCode(MPEG1or2Demux::SCR const& scr) {
+  double result = scr.remainingBits/90000.0 + scr.extension/300.0;
+  if (scr.highBit) {
+    // Add (2^32)/90000 == (2^28)/5625
+    double const highBitValue = (256*1024*1024)/5625.0;
+    result += highBitValue;
+  }
+
+  return (float)result;
+}
diff --git a/liveMedia/MPEG1or2VideoFileServerMediaSubsession.cpp b/liveMedia/MPEG1or2VideoFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..4053b82
--- /dev/null
+++ b/liveMedia/MPEG1or2VideoFileServerMediaSubsession.cpp
@@ -0,0 +1,69 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a MPEG-1 or 2 Elementary Stream video file.
+// Implementation
+
+#include "MPEG1or2VideoFileServerMediaSubsession.hh"
+#include "MPEG1or2VideoRTPSink.hh"
+#include "ByteStreamFileSource.hh"
+#include "MPEG1or2VideoStreamFramer.hh"
+
+MPEG1or2VideoFileServerMediaSubsession*
+MPEG1or2VideoFileServerMediaSubsession::createNew(UsageEnvironment& env,
+						  char const* fileName,
+						  Boolean reuseFirstSource,
+						  Boolean iFramesOnly,
+						  double vshPeriod) {
+  return new MPEG1or2VideoFileServerMediaSubsession(env, fileName, reuseFirstSource,
+						    iFramesOnly, vshPeriod);
+}
+
+MPEG1or2VideoFileServerMediaSubsession
+::MPEG1or2VideoFileServerMediaSubsession(UsageEnvironment& env,
+					 char const* fileName,
+					 Boolean reuseFirstSource,
+					 Boolean iFramesOnly,
+					 double vshPeriod)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource),
+    fIFramesOnly(iFramesOnly), fVSHPeriod(vshPeriod) {
+}
+
+MPEG1or2VideoFileServerMediaSubsession
+::~MPEG1or2VideoFileServerMediaSubsession() {
+}
+
+FramedSource* MPEG1or2VideoFileServerMediaSubsession
+::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  estBitrate = 500; // kbps, estimate
+
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(envir(), fFileName);
+  if (fileSource == NULL) return NULL;
+  fFileSize = fileSource->fileSize();
+
+  return MPEG1or2VideoStreamFramer
+    ::createNew(envir(), fileSource, fIFramesOnly, fVSHPeriod);
+}
+
+RTPSink* MPEG1or2VideoFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock,
+		   unsigned char /*rtpPayloadTypeIfDynamic*/,
+		   FramedSource* /*inputSource*/) {
+  return MPEG1or2VideoRTPSink::createNew(envir(), rtpGroupsock);
+}
diff --git a/liveMedia/MPEG1or2VideoRTPSink.cpp b/liveMedia/MPEG1or2VideoRTPSink.cpp
new file mode 100644
index 0000000..173dd36
--- /dev/null
+++ b/liveMedia/MPEG1or2VideoRTPSink.cpp
@@ -0,0 +1,175 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for MPEG video (RFC 2250)
+// Implementation
+
+#include "MPEG1or2VideoRTPSink.hh"
+#include "MPEG1or2VideoStreamFramer.hh"
+
+MPEG1or2VideoRTPSink::MPEG1or2VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs)
+  : VideoRTPSink(env, RTPgs, 32, 90000, "MPV") {
+  fPictureState.temporal_reference = 0;
+  fPictureState.picture_coding_type = fPictureState.vector_code_bits = 0;
+}
+
+MPEG1or2VideoRTPSink::~MPEG1or2VideoRTPSink() {
+}
+
+MPEG1or2VideoRTPSink*
+MPEG1or2VideoRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs) {
+  return new MPEG1or2VideoRTPSink(env, RTPgs);
+}
+
+Boolean MPEG1or2VideoRTPSink::sourceIsCompatibleWithUs(MediaSource& source) {
+  // Our source must be an appropriate framer:
+  return source.isMPEG1or2VideoStreamFramer();
+}
+
+Boolean MPEG1or2VideoRTPSink::allowFragmentationAfterStart() const {
+  return True;
+}
+
+Boolean MPEG1or2VideoRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+				 unsigned numBytesInFrame) const {
+  // A 'frame' (which in this context can mean a header or a slice as well as a
+  // complete picture) can appear at other than the first position in a packet
+  // in all situations, EXCEPT when it follows the end of (i.e., the last slice
+  // of) a picture.  I.e., the headers at the beginning of a picture must
+  // appear at the start of a RTP packet.
+  if (!fPreviousFrameWasSlice) return True;
+
+  // A slice is already packed into this packet.  We allow this new 'frame'
+  // to be packed after it, provided that it is also a slice:
+  return numBytesInFrame >= 4
+    && frameStart[0] == 0 && frameStart[1] == 0 && frameStart[2] == 1
+    && frameStart[3] >= 1 && frameStart[3] <= 0xAF;
+}
+
+#define VIDEO_SEQUENCE_HEADER_START_CODE 0x000001B3
+#define PICTURE_START_CODE               0x00000100
+
+void MPEG1or2VideoRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* frameStart,
+			 unsigned numBytesInFrame,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  Boolean thisFrameIsASlice = False; // until we learn otherwise
+  if (isFirstFrameInPacket()) {
+    fSequenceHeaderPresent = fPacketBeginsSlice = fPacketEndsSlice = False;
+  }
+
+  if (fragmentationOffset == 0) {
+    // Begin by inspecting the 4-byte code at the start of the frame:
+    if (numBytesInFrame < 4) return; // shouldn't happen
+    unsigned startCode = (frameStart[0]<<24) | (frameStart[1]<<16)
+                       | (frameStart[2]<<8) | frameStart[3];
+
+    if (startCode == VIDEO_SEQUENCE_HEADER_START_CODE) {
+      // This is a video sequence header
+      fSequenceHeaderPresent = True;
+    } else if (startCode == PICTURE_START_CODE) {
+      // This is a picture header
+
+      // Record the parameters of this picture:
+      if (numBytesInFrame < 8) return; // shouldn't happen
+      unsigned next4Bytes = (frameStart[4]<<24) | (frameStart[5]<<16)
+	                  | (frameStart[6]<<8) | frameStart[7];
+      unsigned char byte8 = numBytesInFrame == 8 ? 0 : frameStart[8];
+
+      fPictureState.temporal_reference = (next4Bytes&0xFFC00000)>>(32-10);
+      fPictureState.picture_coding_type = (next4Bytes&0x00380000)>>(32-(10+3));
+
+      unsigned char FBV, BFC, FFV, FFC;
+      FBV = BFC = FFV = FFC = 0;
+      switch (fPictureState.picture_coding_type) {
+      case 3:
+	FBV = (byte8&0x40)>>6;
+	BFC = (byte8&0x38)>>3;
+	// fall through to:
+      case 2:
+	FFV = (next4Bytes&0x00000004)>>2;
+	FFC = ((next4Bytes&0x00000003)<<1) | ((byte8&0x80)>>7);
+      }
+
+      fPictureState.vector_code_bits = (FBV<<7) | (BFC<<4) | (FFV<<3) | FFC;
+    } else if ((startCode&0xFFFFFF00) == 0x00000100) {
+      unsigned char lastCodeByte = startCode&0xFF;
+
+      if (lastCodeByte <= 0xAF) {
+	// This is (the start of) a slice
+	thisFrameIsASlice = True;
+      } else {
+	// This is probably a GOP header; we don't do anything with this
+      }
+    } else {
+      // The first 4 bytes aren't a code that we recognize.
+      envir() << "Warning: MPEG1or2VideoRTPSink::doSpecialFrameHandling saw strange first 4 bytes "
+	      << (void*)startCode << ", but we're not a fragment\n";
+    }
+  } else {
+    // We're a fragment (other than the first) of a slice.
+    thisFrameIsASlice = True;
+  }
+
+  if (thisFrameIsASlice) {
+    // This packet begins a slice iff there's no fragmentation offset:
+    fPacketBeginsSlice = (fragmentationOffset == 0);
+
+    // This packet also ends a slice iff there are no fragments remaining:
+    fPacketEndsSlice = (numRemainingBytes == 0);
+  }
+
+  // Set the video-specific header based on the parameters that we've seen.
+  // Note that this may get done more than once, if several frames appear
+  // in the packet.  That's OK, because this situation happens infrequently,
+  // and we want the video-specific header to reflect the most up-to-date
+  // information (in particular, from a Picture Header) anyway.
+  unsigned videoSpecificHeader =
+    // T == 0
+    (fPictureState.temporal_reference<<16) |
+    // AN == N == 0
+    (fSequenceHeaderPresent<<13) |
+    (fPacketBeginsSlice<<12) |
+    (fPacketEndsSlice<<11) |
+    (fPictureState.picture_coding_type<<8) |
+    fPictureState.vector_code_bits;
+  setSpecialHeaderWord(videoSpecificHeader);
+
+  // Also set the RTP timestamp.  (As above, we do this for each frame
+  // in the packet.)
+  setTimestamp(framePresentationTime);
+
+  // Set the RTP 'M' (marker) bit iff this frame ends (i.e., is the last
+  // slice of) a picture (and there are no fragments remaining).
+  // This relies on the source being a "MPEG1or2VideoStreamFramer".
+  MPEG1or2VideoStreamFramer* framerSource = (MPEG1or2VideoStreamFramer*)fSource;
+  if (framerSource != NULL && framerSource->pictureEndMarker()
+      && numRemainingBytes == 0) {
+    setMarkerBit();
+    framerSource->pictureEndMarker() = False;
+  }
+
+  fPreviousFrameWasSlice = thisFrameIsASlice;
+}
+
+unsigned MPEG1or2VideoRTPSink::specialHeaderSize() const {
+  // There's a 4 byte special video header:
+  return 4;
+}
diff --git a/liveMedia/MPEG1or2VideoRTPSource.cpp b/liveMedia/MPEG1or2VideoRTPSource.cpp
new file mode 100644
index 0000000..b41466e
--- /dev/null
+++ b/liveMedia/MPEG1or2VideoRTPSource.cpp
@@ -0,0 +1,82 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MPEG-1 or MPEG-2 Video RTP Sources
+// Implementation
+
+#include "MPEG1or2VideoRTPSource.hh"
+
+MPEG1or2VideoRTPSource*
+MPEG1or2VideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			      unsigned char rtpPayloadFormat,
+			      unsigned rtpTimestampFrequency) {
+  return new MPEG1or2VideoRTPSource(env, RTPgs, rtpPayloadFormat,
+				rtpTimestampFrequency);
+}
+
+MPEG1or2VideoRTPSource::MPEG1or2VideoRTPSource(UsageEnvironment& env,
+				       Groupsock* RTPgs,
+				       unsigned char rtpPayloadFormat,
+				       unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs,
+			 rtpPayloadFormat, rtpTimestampFrequency){
+}
+
+MPEG1or2VideoRTPSource::~MPEG1or2VideoRTPSource() {
+}
+
+Boolean MPEG1or2VideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  // There's a 4-byte video-specific header
+  if (packet->dataSize() < 4) return False;
+
+  u_int32_t header = ntohl(*(u_int32_t*)(packet->data()));
+
+  u_int32_t sBit = header&0x00002000; // sequence-header-present
+  u_int32_t bBit = header&0x00001000; // beginning-of-slice
+  u_int32_t eBit = header&0x00000800; // end-of-slice
+
+  fCurrentPacketBeginsFrame = (sBit|bBit) != 0;
+  fCurrentPacketCompletesFrame = ((sBit != 0) && (bBit == 0)) || (eBit != 0);
+
+  resultSpecialHeaderSize = 4;
+  return True;
+}
+
+Boolean MPEG1or2VideoRTPSource
+::packetIsUsableInJitterCalculation(unsigned char* packet,
+				    unsigned packetSize) {
+  // There's a 4-byte video-specific header
+  if (packetSize < 4) return False;
+
+  // Extract the "Picture-Type" field from this, to determine whether
+  // this packet can be used in jitter calculations:
+  unsigned header = ntohl(*(u_int32_t*)packet);
+
+  unsigned short pictureType = (header>>8)&0x7;
+  if (pictureType == 1) { // an I frame
+    return True;
+  } else { // a P, B, D, or other unknown frame type
+    return False;
+  }
+}
+
+char const* MPEG1or2VideoRTPSource::MIMEtype() const {
+  return "video/MPEG";
+}
+
diff --git a/liveMedia/MPEG1or2VideoStreamDiscreteFramer.cpp b/liveMedia/MPEG1or2VideoStreamDiscreteFramer.cpp
new file mode 100644
index 0000000..df5e594
--- /dev/null
+++ b/liveMedia/MPEG1or2VideoStreamDiscreteFramer.cpp
@@ -0,0 +1,203 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simplified version of "MPEG1or2VideoStreamFramer" that takes only
+// complete, discrete frames (rather than an arbitrary byte stream) as input.
+// This avoids the parsing and data copying overhead of the full
+// "MPEG1or2VideoStreamFramer".
+// Implementation
+
+#include "MPEG1or2VideoStreamDiscreteFramer.hh"
+
+MPEG1or2VideoStreamDiscreteFramer*
+MPEG1or2VideoStreamDiscreteFramer::createNew(UsageEnvironment& env,
+                                             FramedSource* inputSource,
+                                             Boolean iFramesOnly,
+                                             double vshPeriod,
+					     Boolean leavePresentationTimesUnmodified) {
+  // Need to add source type checking here???  #####
+  return new MPEG1or2VideoStreamDiscreteFramer(env, inputSource,
+                                               iFramesOnly, vshPeriod, leavePresentationTimesUnmodified);
+}
+
+MPEG1or2VideoStreamDiscreteFramer
+::MPEG1or2VideoStreamDiscreteFramer(UsageEnvironment& env,
+                                    FramedSource* inputSource,
+                                    Boolean iFramesOnly, double vshPeriod, Boolean leavePresentationTimesUnmodified)
+  : MPEG1or2VideoStreamFramer(env, inputSource, iFramesOnly, vshPeriod,
+                              False/*don't create a parser*/),
+    fLeavePresentationTimesUnmodified(leavePresentationTimesUnmodified),
+    fLastNonBFrameTemporal_reference(0),
+    fSavedVSHSize(0), fSavedVSHTimestamp(0.0),
+    fIFramesOnly(iFramesOnly), fVSHPeriod(vshPeriod) {
+  fLastNonBFramePresentationTime.tv_sec = 0;
+  fLastNonBFramePresentationTime.tv_usec = 0;
+}
+
+MPEG1or2VideoStreamDiscreteFramer::~MPEG1or2VideoStreamDiscreteFramer() {
+}
+
+void MPEG1or2VideoStreamDiscreteFramer::doGetNextFrame() {
+  // Arrange to read data (which should be a complete MPEG-1 or 2 video frame)
+  // from our data source, directly into the client's input buffer.
+  // After reading this, we'll do some parsing on the frame.
+  fInputSource->getNextFrame(fTo, fMaxSize,
+                             afterGettingFrame, this,
+                             FramedSource::handleClosure, this);
+}
+
+void MPEG1or2VideoStreamDiscreteFramer
+::afterGettingFrame(void* clientData, unsigned frameSize,
+                    unsigned numTruncatedBytes,
+                    struct timeval presentationTime,
+                    unsigned durationInMicroseconds) {
+  MPEG1or2VideoStreamDiscreteFramer* source
+    = (MPEG1or2VideoStreamDiscreteFramer*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes,
+                             presentationTime, durationInMicroseconds);
+}
+
+static double const frameRateFromCode[] = {
+  0.0,          // forbidden
+  24000/1001.0, // approx 23.976
+  24.0,
+  25.0,
+  30000/1001.0, // approx 29.97
+  30.0,
+  50.0,
+  60000/1001.0, // approx 59.94
+  60.0,
+  0.0,          // reserved
+  0.0,          // reserved
+  0.0,          // reserved
+  0.0,          // reserved
+  0.0,          // reserved
+  0.0,          // reserved
+  0.0           // reserved
+};
+
+#define MILLION 1000000
+
+void MPEG1or2VideoStreamDiscreteFramer
+::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+                     struct timeval presentationTime,
+                     unsigned durationInMicroseconds) {
+  // Check that the first 4 bytes are a system code:
+  if (frameSize >= 4 && fTo[0] == 0 && fTo[1] == 0 && fTo[2] == 1) {
+    fPictureEndMarker = True; // Assume that we have a complete 'picture' here
+
+    u_int8_t nextCode = fTo[3];
+    if (nextCode == 0xB3) { // VIDEO_SEQUENCE_HEADER_START_CODE
+      // Note the following 'frame rate' code:
+      if (frameSize >= 8) {
+	u_int8_t frame_rate_code = fTo[7]&0x0F;
+	fFrameRate = frameRateFromCode[frame_rate_code];
+      }
+
+      // Also, save away this Video Sequence Header, in case we need it later:
+      // First, figure out how big it is:
+      unsigned vshSize;
+      for (vshSize = 4; vshSize < frameSize-3; ++vshSize) {
+	if (fTo[vshSize] == 0 && fTo[vshSize+1] == 0 && fTo[vshSize+2] == 1 &&
+	    (fTo[vshSize+3] == 0xB8 || fTo[vshSize+3] == 0x00)) break;
+      }
+      if (vshSize == frameSize-3) vshSize = frameSize; // There was nothing else following it
+      if (vshSize <= sizeof fSavedVSHBuffer) {
+	memmove(fSavedVSHBuffer, fTo, vshSize);
+	fSavedVSHSize = vshSize;
+	fSavedVSHTimestamp
+	  = presentationTime.tv_sec + presentationTime.tv_usec/(double)MILLION;
+      }
+    } else if (nextCode == 0xB8) { // GROUP_START_CODE
+      // If necessary, insert a saved Video Sequence Header in front of this:
+      double pts = presentationTime.tv_sec + presentationTime.tv_usec/(double)MILLION;
+      if (pts > fSavedVSHTimestamp + fVSHPeriod &&
+	  fSavedVSHSize + frameSize <= fMaxSize) {
+	memmove(&fTo[fSavedVSHSize], &fTo[0], frameSize); // make room for the header
+	memmove(&fTo[0], fSavedVSHBuffer, fSavedVSHSize); // insert it
+	frameSize += fSavedVSHSize;
+	fSavedVSHTimestamp = pts;
+      }
+    }
+
+    unsigned i = 3;
+    if (nextCode == 0xB3 /*VIDEO_SEQUENCE_HEADER_START_CODE*/ ||
+	nextCode == 0xB8 /*GROUP_START_CODE*/) {
+      // Skip to the following PICTURE_START_CODE (if any):
+      for (i += 4; i < frameSize; ++i) {
+	if (fTo[i] == 0x00 /*PICTURE_START_CODE*/
+	    && fTo[i-1] == 1 && fTo[i-2] == 0 && fTo[i-3] == 0) {
+	  nextCode = fTo[i];
+	  break;
+	}
+      }
+    }
+
+    if (nextCode == 0x00 /*PICTURE_START_CODE*/ && i+2 < frameSize) {
+      // Get the 'temporal_reference' and 'picture_coding_type' from the
+      // following 2 bytes:
+      ++i;
+      unsigned short temporal_reference = (fTo[i]<<2)|(fTo[i+1]>>6);
+      unsigned char picture_coding_type = (fTo[i+1]&0x38)>>3;
+
+      // If this is not an "I" frame, but we were asked for "I" frames only, then try again:
+      if (fIFramesOnly && picture_coding_type != 1) {
+	doGetNextFrame();
+	return;
+      }
+
+      // If this is a "B" frame, then we have to tweak "presentationTime":
+      if (!fLeavePresentationTimesUnmodified && picture_coding_type == 3/*B*/
+	  && (fLastNonBFramePresentationTime.tv_usec > 0 ||
+	      fLastNonBFramePresentationTime.tv_sec > 0)) {
+	int trIncrement
+            = fLastNonBFrameTemporal_reference - temporal_reference;
+	if (trIncrement < 0) trIncrement += 1024; // field is 10 bits in size
+
+	unsigned usIncrement = fFrameRate == 0.0 ? 0
+	  : (unsigned)((trIncrement*MILLION)/fFrameRate);
+	unsigned secondsToSubtract = usIncrement/MILLION;
+	unsigned uSecondsToSubtract = usIncrement%MILLION;
+
+	presentationTime = fLastNonBFramePresentationTime;
+	if ((unsigned)presentationTime.tv_usec < uSecondsToSubtract) {
+	  presentationTime.tv_usec += MILLION;
+	  if (presentationTime.tv_sec > 0) --presentationTime.tv_sec;
+	}
+	presentationTime.tv_usec -= uSecondsToSubtract;
+	if ((unsigned)presentationTime.tv_sec > secondsToSubtract) {
+	  presentationTime.tv_sec -= secondsToSubtract;
+	} else {
+	  presentationTime.tv_sec = presentationTime.tv_usec = 0;
+	}
+      } else {
+	fLastNonBFramePresentationTime = presentationTime;
+	fLastNonBFrameTemporal_reference = temporal_reference;
+      }
+    }
+  }
+
+  // ##### Later:
+  // - do "iFramesOnly" if requested
+
+  // Complete delivery to the client:
+  fFrameSize = frameSize;
+  fNumTruncatedBytes = numTruncatedBytes;
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+  afterGetting(this);
+}
diff --git a/liveMedia/MPEG1or2VideoStreamFramer.cpp b/liveMedia/MPEG1or2VideoStreamFramer.cpp
new file mode 100644
index 0000000..a09ab33
--- /dev/null
+++ b/liveMedia/MPEG1or2VideoStreamFramer.cpp
@@ -0,0 +1,478 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an MPEG 1 or 2 video elementary stream into
+//   frames for: Video_Sequence_Header, GOP_Header, Picture_Header
+// Implementation
+
+#include "MPEG1or2VideoStreamFramer.hh"
+#include "MPEGVideoStreamParser.hh"
+#include <string.h>
+
+////////// MPEG1or2VideoStreamParser definition //////////
+
+// An enum representing the current state of the parser:
+enum MPEGParseState {
+  PARSING_VIDEO_SEQUENCE_HEADER,
+  PARSING_VIDEO_SEQUENCE_HEADER_SEEN_CODE,
+  PARSING_GOP_HEADER,
+  PARSING_GOP_HEADER_SEEN_CODE,
+  PARSING_PICTURE_HEADER,
+  PARSING_SLICE
+};
+
+#define VSH_MAX_SIZE 1000
+
+class MPEG1or2VideoStreamParser: public MPEGVideoStreamParser {
+public:
+  MPEG1or2VideoStreamParser(MPEG1or2VideoStreamFramer* usingSource,
+			FramedSource* inputSource,
+			Boolean iFramesOnly, double vshPeriod);
+  virtual ~MPEG1or2VideoStreamParser();
+
+private: // redefined virtual functions:
+  virtual void flushInput();
+  virtual unsigned parse();
+
+private:
+  void reset();
+
+  MPEG1or2VideoStreamFramer* usingSource() {
+    return (MPEG1or2VideoStreamFramer*)fUsingSource;
+  }
+  void setParseState(MPEGParseState parseState);
+
+  unsigned parseVideoSequenceHeader(Boolean haveSeenStartCode);
+  unsigned parseGOPHeader(Boolean haveSeenStartCode);
+  unsigned parsePictureHeader();
+  unsigned parseSlice();
+
+private:
+  MPEGParseState fCurrentParseState;
+  unsigned fPicturesSinceLastGOP;
+      // can be used to compute timestamp for a video_sequence_header
+  unsigned short fCurPicTemporalReference;
+      // used to compute slice timestamp
+  unsigned char fCurrentSliceNumber; // set when parsing a slice
+
+  // A saved copy of the most recently seen 'video_sequence_header',
+  // in case we need to insert it into the stream periodically:
+  unsigned char fSavedVSHBuffer[VSH_MAX_SIZE];
+  unsigned fSavedVSHSize;
+  double fSavedVSHTimestamp;
+  double fVSHPeriod;
+  Boolean fIFramesOnly, fSkippingCurrentPicture;
+
+  void saveCurrentVSH();
+  Boolean needToUseSavedVSH();
+  unsigned useSavedVSH(); // returns the size of the saved VSH
+};
+
+
+////////// MPEG1or2VideoStreamFramer implementation //////////
+
+MPEG1or2VideoStreamFramer::MPEG1or2VideoStreamFramer(UsageEnvironment& env,
+						     FramedSource* inputSource,
+						     Boolean iFramesOnly,
+						     double vshPeriod,
+						     Boolean createParser)
+  : MPEGVideoStreamFramer(env, inputSource) {
+  fParser = createParser
+    ? new MPEG1or2VideoStreamParser(this, inputSource,
+				    iFramesOnly, vshPeriod)
+    : NULL;
+}
+
+MPEG1or2VideoStreamFramer::~MPEG1or2VideoStreamFramer() {
+}
+
+MPEG1or2VideoStreamFramer*
+MPEG1or2VideoStreamFramer::createNew(UsageEnvironment& env,
+				 FramedSource* inputSource,
+				 Boolean iFramesOnly,
+				 double vshPeriod) {
+  // Need to add source type checking here???  #####
+  return new MPEG1or2VideoStreamFramer(env, inputSource, iFramesOnly, vshPeriod);
+}
+
+double MPEG1or2VideoStreamFramer::getCurrentPTS() const {
+  return fPresentationTime.tv_sec + fPresentationTime.tv_usec/1000000.0;
+}
+
+Boolean MPEG1or2VideoStreamFramer::isMPEG1or2VideoStreamFramer() const {
+  return True;
+}
+
+////////// MPEG1or2VideoStreamParser implementation //////////
+
+MPEG1or2VideoStreamParser
+::MPEG1or2VideoStreamParser(MPEG1or2VideoStreamFramer* usingSource,
+			FramedSource* inputSource,
+			Boolean iFramesOnly, double vshPeriod)
+  : MPEGVideoStreamParser(usingSource, inputSource),
+    fCurrentParseState(PARSING_VIDEO_SEQUENCE_HEADER),
+    fVSHPeriod(vshPeriod), fIFramesOnly(iFramesOnly) {
+  reset();
+}
+
+MPEG1or2VideoStreamParser::~MPEG1or2VideoStreamParser() {
+}
+
+void MPEG1or2VideoStreamParser::setParseState(MPEGParseState parseState) {
+  fCurrentParseState = parseState;
+  MPEGVideoStreamParser::setParseState();
+}
+
+void MPEG1or2VideoStreamParser::reset() {
+  fPicturesSinceLastGOP = 0;
+  fCurPicTemporalReference = 0;
+  fCurrentSliceNumber = 0;
+  fSavedVSHSize = 0;
+  fSkippingCurrentPicture = False;
+}
+
+void MPEG1or2VideoStreamParser::flushInput() {
+  reset();
+  StreamParser::flushInput();
+  if (fCurrentParseState != PARSING_VIDEO_SEQUENCE_HEADER) {
+    setParseState(PARSING_GOP_HEADER); // start from the next GOP
+  }
+}
+
+unsigned MPEG1or2VideoStreamParser::parse() {
+  try {
+    switch (fCurrentParseState) {
+    case PARSING_VIDEO_SEQUENCE_HEADER: {
+      return parseVideoSequenceHeader(False);
+    }
+    case PARSING_VIDEO_SEQUENCE_HEADER_SEEN_CODE: {
+      return parseVideoSequenceHeader(True);
+    }
+    case PARSING_GOP_HEADER: {
+      return parseGOPHeader(False);
+    }
+    case PARSING_GOP_HEADER_SEEN_CODE: {
+      return parseGOPHeader(True);
+    }
+    case PARSING_PICTURE_HEADER: {
+      return parsePictureHeader();
+    }
+    case PARSING_SLICE: {
+      return parseSlice();
+    }
+    default: {
+      return 0; // shouldn't happen
+    }
+    }
+  } catch (int /*e*/) {
+#ifdef DEBUG
+    fprintf(stderr, "MPEG1or2VideoStreamParser::parse() EXCEPTION (This is normal behavior - *not* an error)\n");
+#endif
+    return 0;  // the parsing got interrupted
+  }
+}
+
+void MPEG1or2VideoStreamParser::saveCurrentVSH() {
+  unsigned frameSize = curFrameSize();
+  if (frameSize > sizeof fSavedVSHBuffer) return; // too big to save
+
+  memmove(fSavedVSHBuffer, fStartOfFrame, frameSize);
+  fSavedVSHSize = frameSize;
+  fSavedVSHTimestamp = usingSource()->getCurrentPTS();
+}
+
+Boolean MPEG1or2VideoStreamParser::needToUseSavedVSH() {
+  return usingSource()->getCurrentPTS() > fSavedVSHTimestamp+fVSHPeriod
+    && fSavedVSHSize > 0;
+}
+
+unsigned MPEG1or2VideoStreamParser::useSavedVSH() {
+  unsigned bytesToUse = fSavedVSHSize;
+  unsigned maxBytesToUse = fLimit - fStartOfFrame;
+  if (bytesToUse > maxBytesToUse) bytesToUse = maxBytesToUse;
+
+  memmove(fStartOfFrame, fSavedVSHBuffer, bytesToUse);
+
+  // Also reset the saved timestamp:
+  fSavedVSHTimestamp = usingSource()->getCurrentPTS();
+
+#ifdef DEBUG
+  fprintf(stderr, "used saved video_sequence_header (%d bytes)\n", bytesToUse);
+#endif
+  return bytesToUse;
+}
+
+#define VIDEO_SEQUENCE_HEADER_START_CODE 0x000001B3
+#define GROUP_START_CODE                 0x000001B8
+#define PICTURE_START_CODE               0x00000100
+#define SEQUENCE_END_CODE                0x000001B7
+
+static double const frameRateFromCode[] = {
+  0.0,          // forbidden
+  24000/1001.0, // approx 23.976
+  24.0,
+  25.0,
+  30000/1001.0, // approx 29.97
+  30.0,
+  50.0,
+  60000/1001.0, // approx 59.94
+  60.0,
+  0.0,          // reserved
+  0.0,          // reserved
+  0.0,          // reserved
+  0.0,          // reserved
+  0.0,          // reserved
+  0.0,          // reserved
+  0.0           // reserved
+};
+
+unsigned MPEG1or2VideoStreamParser
+::parseVideoSequenceHeader(Boolean haveSeenStartCode) {
+#ifdef DEBUG
+  fprintf(stderr, "parsing video sequence header\n");
+#endif
+  unsigned first4Bytes;
+  if (!haveSeenStartCode) {
+    while ((first4Bytes = test4Bytes()) != VIDEO_SEQUENCE_HEADER_START_CODE) {
+#ifdef DEBUG
+      fprintf(stderr, "ignoring non video sequence header: 0x%08x\n", first4Bytes);
+#endif
+      get1Byte(); setParseState(PARSING_VIDEO_SEQUENCE_HEADER);
+          // ensures we progress over bad data
+    }
+    first4Bytes = get4Bytes();
+  } else {
+    // We've already seen the start code
+    first4Bytes = VIDEO_SEQUENCE_HEADER_START_CODE;
+  }
+  save4Bytes(first4Bytes);
+
+  // Next, extract the size and rate parameters from the next 8 bytes
+  unsigned paramWord1 = get4Bytes();
+  save4Bytes(paramWord1);
+  unsigned next4Bytes = get4Bytes();
+#ifdef DEBUG
+  unsigned short horizontal_size_value   = (paramWord1&0xFFF00000)>>(32-12);
+  unsigned short vertical_size_value     = (paramWord1&0x000FFF00)>>8;
+  unsigned char aspect_ratio_information = (paramWord1&0x000000F0)>>4;
+#endif
+  unsigned char frame_rate_code          = (paramWord1&0x0000000F);
+  usingSource()->fFrameRate = frameRateFromCode[frame_rate_code];
+#ifdef DEBUG
+  unsigned bit_rate_value                = (next4Bytes&0xFFFFC000)>>(32-18);
+  unsigned vbv_buffer_size_value         = (next4Bytes&0x00001FF8)>>3;
+  fprintf(stderr, "horizontal_size_value: %d, vertical_size_value: %d, aspect_ratio_information: %d, frame_rate_code: %d (=>%f fps), bit_rate_value: %d (=>%d bps), vbv_buffer_size_value: %d\n", horizontal_size_value, vertical_size_value, aspect_ratio_information, frame_rate_code, usingSource()->fFrameRate, bit_rate_value, bit_rate_value*400, vbv_buffer_size_value);
+#endif
+
+  // Now, copy all bytes that we see, up until we reach a GROUP_START_CODE
+  // or a PICTURE_START_CODE:
+  do {
+    saveToNextCode(next4Bytes);
+  } while (next4Bytes != GROUP_START_CODE && next4Bytes != PICTURE_START_CODE);
+
+  setParseState((next4Bytes == GROUP_START_CODE)
+		? PARSING_GOP_HEADER_SEEN_CODE : PARSING_PICTURE_HEADER);
+
+  // Compute this frame's timestamp by noting how many pictures we've seen
+  // since the last GOP header:
+  usingSource()->computePresentationTime(fPicturesSinceLastGOP);
+
+  // Save this video_sequence_header, in case we need to insert a copy
+  // into the stream later:
+  saveCurrentVSH();
+
+  return curFrameSize();
+}
+
+unsigned MPEG1or2VideoStreamParser::parseGOPHeader(Boolean haveSeenStartCode) {
+  // First check whether we should insert a previously-saved
+  // 'video_sequence_header' here:
+  if (needToUseSavedVSH()) return useSavedVSH();
+
+#ifdef DEBUG
+  fprintf(stderr, "parsing GOP header\n");
+#endif
+  unsigned first4Bytes;
+  if (!haveSeenStartCode) {
+    while ((first4Bytes = test4Bytes()) != GROUP_START_CODE) {
+#ifdef DEBUG
+      fprintf(stderr, "ignoring non GOP start code: 0x%08x\n", first4Bytes);
+#endif
+      get1Byte(); setParseState(PARSING_GOP_HEADER);
+          // ensures we progress over bad data
+    }
+    first4Bytes = get4Bytes();
+  } else {
+    // We've already seen the GROUP_START_CODE
+    first4Bytes = GROUP_START_CODE;
+  }
+  save4Bytes(first4Bytes);
+
+  // Next, extract the (25-bit) time code from the next 4 bytes:
+  unsigned next4Bytes = get4Bytes();
+  unsigned time_code = (next4Bytes&0xFFFFFF80)>>(32-25);
+#if defined(DEBUG) || defined(DEBUG_TIMESTAMPS)
+  Boolean drop_frame_flag     = (time_code&0x01000000) != 0;
+#endif
+  unsigned time_code_hours    = (time_code&0x00F80000)>>19;
+  unsigned time_code_minutes  = (time_code&0x0007E000)>>13;
+  unsigned time_code_seconds  = (time_code&0x00000FC0)>>6;
+  unsigned time_code_pictures = (time_code&0x0000003F);
+#if defined(DEBUG) || defined(DEBUG_TIMESTAMPS)
+  fprintf(stderr, "time_code: 0x%07x, drop_frame %d, hours %d, minutes %d, seconds %d, pictures %d\n", time_code, drop_frame_flag, time_code_hours, time_code_minutes, time_code_seconds, time_code_pictures);
+#endif
+#ifdef DEBUG
+  Boolean closed_gop  = (next4Bytes&0x00000040) != 0;
+  Boolean broken_link = (next4Bytes&0x00000020) != 0;
+  fprintf(stderr, "closed_gop: %d, broken_link: %d\n", closed_gop, broken_link);
+#endif
+
+  // Now, copy all bytes that we see, up until we reach a PICTURE_START_CODE:
+  do {
+    saveToNextCode(next4Bytes);
+  } while (next4Bytes != PICTURE_START_CODE);
+
+  // Record the time code:
+  usingSource()->setTimeCode(time_code_hours, time_code_minutes,
+			     time_code_seconds, time_code_pictures,
+			     fPicturesSinceLastGOP);
+
+  fPicturesSinceLastGOP = 0;
+
+  // Compute this frame's timestamp:
+  usingSource()->computePresentationTime(0);
+
+  setParseState(PARSING_PICTURE_HEADER);
+
+  return curFrameSize();
+}
+
+inline Boolean isSliceStartCode(unsigned fourBytes) {
+  if ((fourBytes&0xFFFFFF00) != 0x00000100) return False;
+
+  unsigned char lastByte = fourBytes&0xFF;
+  return lastByte <= 0xAF && lastByte >= 1;
+}
+
+unsigned MPEG1or2VideoStreamParser::parsePictureHeader() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing picture header\n");
+#endif
+  // Note that we've already read the PICTURE_START_CODE
+  // Next, extract the temporal reference from the next 4 bytes:
+  unsigned next4Bytes = get4Bytes();
+  unsigned short temporal_reference = (next4Bytes&0xFFC00000)>>(32-10);
+  unsigned char picture_coding_type = (next4Bytes&0x00380000)>>19;
+#ifdef DEBUG
+  unsigned short vbv_delay          = (next4Bytes&0x0007FFF8)>>3;
+  fprintf(stderr, "temporal_reference: %d, picture_coding_type: %d, vbv_delay: %d\n", temporal_reference, picture_coding_type, vbv_delay);
+#endif
+
+  fSkippingCurrentPicture = fIFramesOnly && picture_coding_type != 1;
+  if (fSkippingCurrentPicture) {
+    // Skip all bytes that we see, up until we reach a slice_start_code:
+    do {
+      skipToNextCode(next4Bytes);
+    } while (!isSliceStartCode(next4Bytes));
+  } else {
+    // Save the PICTURE_START_CODE that we've already read:
+    save4Bytes(PICTURE_START_CODE);
+
+    // Copy all bytes that we see, up until we reach a slice_start_code:
+    do {
+      saveToNextCode(next4Bytes);
+    } while (!isSliceStartCode(next4Bytes));
+  }
+
+  setParseState(PARSING_SLICE);
+
+  fCurrentSliceNumber = next4Bytes&0xFF;
+
+  // Record the temporal reference:
+  fCurPicTemporalReference = temporal_reference;
+
+  // Compute this frame's timestamp:
+  usingSource()->computePresentationTime(fCurPicTemporalReference);
+
+  if (fSkippingCurrentPicture) {
+    return parse(); // try again, until we get a non-skipped frame
+  } else {
+    return curFrameSize();
+  }
+}
+
+unsigned MPEG1or2VideoStreamParser::parseSlice() {
+  // Note that we've already read the slice_start_code:
+  unsigned next4Bytes = PICTURE_START_CODE|fCurrentSliceNumber;
+#ifdef DEBUG_SLICE
+  fprintf(stderr, "parsing slice: 0x%08x\n", next4Bytes);
+#endif
+
+  if (fSkippingCurrentPicture) {
+    // Skip all bytes that we see, up until we reach a code of some sort:
+    skipToNextCode(next4Bytes);
+  } else {
+    // Copy all bytes that we see, up until we reach a code of some sort:
+    saveToNextCode(next4Bytes);
+  }
+
+  // The next thing to parse depends on the code that we just saw:
+  if (isSliceStartCode(next4Bytes)) { // common case
+    setParseState(PARSING_SLICE);
+    fCurrentSliceNumber = next4Bytes&0xFF;
+  } else {
+    // Because we don't see any more slices, we are assumed to have ended
+    // the current picture:
+    ++fPicturesSinceLastGOP;
+    ++usingSource()->fPictureCount;
+    usingSource()->fPictureEndMarker = True; // HACK #####
+
+    switch (next4Bytes) {
+    case SEQUENCE_END_CODE: {
+      setParseState(PARSING_VIDEO_SEQUENCE_HEADER);
+      break;
+    }
+    case VIDEO_SEQUENCE_HEADER_START_CODE: {
+      setParseState(PARSING_VIDEO_SEQUENCE_HEADER_SEEN_CODE);
+      break;
+    }
+    case GROUP_START_CODE: {
+      setParseState(PARSING_GOP_HEADER_SEEN_CODE);
+      break;
+    }
+    case PICTURE_START_CODE: {
+      setParseState(PARSING_PICTURE_HEADER);
+      break;
+    }
+    default: {
+      usingSource()->envir() << "MPEG1or2VideoStreamParser::parseSlice(): Saw unexpected code "
+			    << (void*)next4Bytes << "\n";
+      setParseState(PARSING_SLICE); // the safest way to recover...
+      break;
+    }
+    }
+  }
+
+  // Compute this frame's timestamp:
+  usingSource()->computePresentationTime(fCurPicTemporalReference);
+
+  if (fSkippingCurrentPicture) {
+    return parse(); // try again, until we get a non-skipped frame
+  } else {
+    return curFrameSize();
+  }
+}
diff --git a/liveMedia/MPEG2IndexFromTransportStream.cpp b/liveMedia/MPEG2IndexFromTransportStream.cpp
new file mode 100644
index 0000000..96c79a9
--- /dev/null
+++ b/liveMedia/MPEG2IndexFromTransportStream.cpp
@@ -0,0 +1,683 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that produces a sequence of I-frame indices from a MPEG-2 Transport Stream
+// Implementation
+
+#include "MPEG2IndexFromTransportStream.hh"
+
+////////// IndexRecord definition //////////
+
+enum RecordType {
+  RECORD_UNPARSED = 0,
+  RECORD_VSH = 1, // a MPEG Video Sequence Header
+  RECORD_GOP = 2,
+  RECORD_PIC_NON_IFRAME = 3, // includes slices
+  RECORD_PIC_IFRAME = 4, // includes slices
+  RECORD_NAL_H264_SPS = 5, // H.264
+  RECORD_NAL_H264_PPS = 6, // H.264
+  RECORD_NAL_H264_SEI = 7, // H.264
+  RECORD_NAL_H264_NON_IFRAME = 8, // H.264
+  RECORD_NAL_H264_IFRAME = 9, // H.264
+  RECORD_NAL_H264_OTHER = 10, // H.264
+  RECORD_NAL_H265_VPS = 11, // H.265
+  RECORD_NAL_H265_SPS = 12, // H.265
+  RECORD_NAL_H265_PPS = 13, // H.265
+  RECORD_NAL_H265_NON_IFRAME = 14, // H.265
+  RECORD_NAL_H265_IFRAME = 15, // H.265
+  RECORD_NAL_H265_OTHER = 16, // H.265
+  RECORD_JUNK
+};
+
+class IndexRecord {
+public:
+  IndexRecord(u_int8_t startOffset, u_int8_t size,
+	      unsigned long transportPacketNumber, float pcr);
+  virtual ~IndexRecord();
+
+  RecordType& recordType() { return fRecordType; }
+  void setFirstFlag() { fRecordType = (RecordType)(((u_int8_t)fRecordType) | 0x80); }
+  u_int8_t startOffset() const { return fStartOffset; }
+  u_int8_t& size() { return fSize; }
+  float pcr() const { return fPCR; }
+  unsigned long transportPacketNumber() const { return fTransportPacketNumber; }
+
+  IndexRecord* next() const { return fNext; }
+  void addAfter(IndexRecord* prev);
+  void unlink();
+
+private:
+  // Index records are maintained in a doubly-linked list:
+  IndexRecord* fNext;
+  IndexRecord* fPrev;
+
+  RecordType fRecordType;
+  u_int8_t fStartOffset; // within the Transport Stream packet
+  u_int8_t fSize; // in bytes, following "fStartOffset".
+  // Note: fStartOffset + fSize <= TRANSPORT_PACKET_SIZE
+  float fPCR;
+  unsigned long fTransportPacketNumber;
+};
+
+#ifdef DEBUG
+static char const* recordTypeStr[] = {
+  "UNPARSED",
+  "VSH",
+  "GOP",
+  "PIC(non-I-frame)",
+  "PIC(I-frame)",
+  "SPS (H.264)",
+  "PPS (H.264)",
+  "SEI (H.264)",
+  "H.264 non-I-frame",
+  "H.264 I-frame",
+  "other NAL unit (H.264)",
+  "VPS (H.265)",
+  "SPS (H.265)",
+  "PPS (H.265)",
+  "H.265 non-I-frame",
+  "H.265 I-frame",
+  "other NAL unit (H.265)",
+  "JUNK"
+};
+
+UsageEnvironment& operator<<(UsageEnvironment& env, IndexRecord& r) {
+  return env << "[" << ((r.recordType()&0x80) != 0 ? "1" : "")
+	     << recordTypeStr[r.recordType()&0x7F] << ":"
+	     << (unsigned)r.transportPacketNumber() << ":" << r.startOffset()
+	     << "(" << r.size() << ")@" << r.pcr() << "]";
+}
+#endif
+
+
+////////// MPEG2IFrameIndexFromTransportStream implementation //////////
+
+MPEG2IFrameIndexFromTransportStream*
+MPEG2IFrameIndexFromTransportStream::createNew(UsageEnvironment& env,
+					       FramedSource* inputSource) {
+  return new MPEG2IFrameIndexFromTransportStream(env, inputSource);
+}
+
+// The largest expected frame size (in bytes):
+#define MAX_FRAME_SIZE 400000
+
+// Make our parse buffer twice as large as this, to ensure that at least one
+// complete frame will fit inside it:
+#define PARSE_BUFFER_SIZE (2*MAX_FRAME_SIZE)
+
+// The PID used for the PAT (as defined in the MPEG Transport Stream standard):
+#define PAT_PID 0
+
+MPEG2IFrameIndexFromTransportStream
+::MPEG2IFrameIndexFromTransportStream(UsageEnvironment& env,
+				      FramedSource* inputSource)
+  : FramedFilter(env, inputSource),
+    fIsH264(False), fIsH265(False),
+    fInputTransportPacketCounter((unsigned)-1), fClosureNumber(0), fLastContinuityCounter(~0),
+    fFirstPCR(0.0), fLastPCR(0.0), fHaveSeenFirstPCR(False),
+    fPMT_PID(0x10), fVideo_PID(0xE0), // default values
+    fParseBufferSize(PARSE_BUFFER_SIZE),
+    fParseBufferFrameStart(0), fParseBufferParseEnd(4), fParseBufferDataEnd(0),
+    fHeadIndexRecord(NULL), fTailIndexRecord(NULL) {
+  fParseBuffer = new unsigned char[fParseBufferSize];
+}
+
+MPEG2IFrameIndexFromTransportStream::~MPEG2IFrameIndexFromTransportStream() {
+  delete fHeadIndexRecord;
+  delete[] fParseBuffer;
+}
+
+void MPEG2IFrameIndexFromTransportStream::doGetNextFrame() {
+  // Begin by trying to deliver an index record (for an already-parsed frame)
+  // to the client:
+  if (deliverIndexRecord()) return;
+
+  // No more index records are left to deliver, so try to parse a new frame:
+  if (parseFrame()) { // success - try again
+    doGetNextFrame();
+    return;
+  }
+
+  // We need to read some more Transport Stream packets.  Check whether we have room:
+  if (fParseBufferSize - fParseBufferDataEnd < TRANSPORT_PACKET_SIZE) {
+    // There's no room left.  Compact the buffer, and check again:
+    compactParseBuffer();
+    if (fParseBufferSize - fParseBufferDataEnd < TRANSPORT_PACKET_SIZE) {
+      envir() << "ERROR: parse buffer full; increase MAX_FRAME_SIZE\n";
+      // Treat this as if the input source ended:
+      handleInputClosure1();
+      return;
+    }
+  }
+
+  // Arrange to read a new Transport Stream packet:
+  fInputSource->getNextFrame(fInputBuffer, sizeof fInputBuffer,
+			     afterGettingFrame, this,
+			     handleInputClosure, this);
+}
+
+void MPEG2IFrameIndexFromTransportStream
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned durationInMicroseconds) {
+  MPEG2IFrameIndexFromTransportStream* source
+    = (MPEG2IFrameIndexFromTransportStream*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes,
+			     presentationTime, durationInMicroseconds);
+}
+
+#define TRANSPORT_SYNC_BYTE 0x47
+
+void MPEG2IFrameIndexFromTransportStream
+::afterGettingFrame1(unsigned frameSize,
+		     unsigned numTruncatedBytes,
+		     struct timeval presentationTime,
+		     unsigned durationInMicroseconds) {
+  if (frameSize < TRANSPORT_PACKET_SIZE || fInputBuffer[0] != TRANSPORT_SYNC_BYTE) {
+    if (fInputBuffer[0] != TRANSPORT_SYNC_BYTE) {
+      envir() << "Bad TS sync byte: 0x" << fInputBuffer[0] << "\n";
+    }
+    // Handle this as if the source ended:
+    handleInputClosure1();
+    return;
+  }
+
+  ++fInputTransportPacketCounter;
+
+  // Figure out how much of this Transport Packet contains PES data:
+  u_int8_t adaptation_field_control = (fInputBuffer[3]&0x30)>>4;
+  u_int8_t totalHeaderSize
+    = adaptation_field_control <= 1 ? 4 : 5 + fInputBuffer[4];
+  if ((adaptation_field_control == 2 && totalHeaderSize != TRANSPORT_PACKET_SIZE) ||
+      (adaptation_field_control == 3 && totalHeaderSize >= TRANSPORT_PACKET_SIZE)) {
+    envir() << "Bad \"adaptation_field_length\": " << fInputBuffer[4] << "\n";
+    doGetNextFrame();
+    return;
+  }
+
+  // Check for a PCR:
+  if (totalHeaderSize > 5 && (fInputBuffer[5]&0x10) != 0) {
+    // There's a PCR:
+    u_int32_t pcrBaseHigh
+      = (fInputBuffer[6]<<24)|(fInputBuffer[7]<<16)
+      |(fInputBuffer[8]<<8)|fInputBuffer[9];
+    float pcr = pcrBaseHigh/45000.0f;
+    if ((fInputBuffer[10]&0x80) != 0) pcr += 1/90000.0f; // add in low-bit (if set)
+    unsigned short pcrExt = ((fInputBuffer[10]&0x01)<<8) | fInputBuffer[11];
+    pcr += pcrExt/27000000.0f;
+
+    if (!fHaveSeenFirstPCR) {
+      fFirstPCR = pcr;
+      fHaveSeenFirstPCR = True;
+    } else if (pcr < fLastPCR) {
+      // The PCR timestamp has gone backwards.  Display a warning about this
+      // (because it indicates buggy Transport Stream data), and compensate for it.
+      envir() << "\nWarning: At about " << fLastPCR-fFirstPCR
+	      << " seconds into the file, the PCR timestamp decreased - from "
+	      << fLastPCR << " to " << pcr << "\n";
+      fFirstPCR -= (fLastPCR - pcr);
+    }
+    fLastPCR = pcr;
+  }
+
+  // Get the PID from the packet, and check for special tables: the PAT and PMT:
+  u_int16_t PID = ((fInputBuffer[1]&0x1F)<<8) | fInputBuffer[2];
+  if (PID == PAT_PID) {
+    analyzePAT(&fInputBuffer[totalHeaderSize], TRANSPORT_PACKET_SIZE-totalHeaderSize);
+  } else if (PID == fPMT_PID) {
+    analyzePMT(&fInputBuffer[totalHeaderSize], TRANSPORT_PACKET_SIZE-totalHeaderSize);
+  }
+
+  // Ignore transport packets for non-video programs,
+  // or packets with no data, or packets that duplicate the previous packet:
+  u_int8_t continuity_counter = fInputBuffer[3]&0x0F;
+  if ((PID != fVideo_PID) ||
+      !(adaptation_field_control == 1 || adaptation_field_control == 3) ||
+      continuity_counter == fLastContinuityCounter) {
+    doGetNextFrame();
+    return;
+  }
+  fLastContinuityCounter = continuity_counter;
+
+  // Also, if this is the start of a PES packet, then skip over the PES header:
+  Boolean payload_unit_start_indicator = (fInputBuffer[1]&0x40) != 0;
+  if (payload_unit_start_indicator && totalHeaderSize < TRANSPORT_PACKET_SIZE - 8 
+      && fInputBuffer[totalHeaderSize] == 0x00 && fInputBuffer[totalHeaderSize+1] == 0x00
+      && fInputBuffer[totalHeaderSize+2] == 0x01) {
+    u_int8_t PES_header_data_length = fInputBuffer[totalHeaderSize+8];
+    totalHeaderSize += 9 + PES_header_data_length;
+    if (totalHeaderSize >= TRANSPORT_PACKET_SIZE) {
+      envir() << "Unexpectedly large PES header size: " << PES_header_data_length << "\n";
+      // Handle this as if the source ended:
+      handleInputClosure1();
+      return;
+    }
+  }
+
+  // The remaining data is Video Elementary Stream data.  Add it to our parse buffer:
+  unsigned vesSize = TRANSPORT_PACKET_SIZE - totalHeaderSize;
+  memmove(&fParseBuffer[fParseBufferDataEnd], &fInputBuffer[totalHeaderSize], vesSize);
+  fParseBufferDataEnd += vesSize;
+
+  // And add a new index record noting where it came from:
+  addToTail(new IndexRecord(totalHeaderSize, vesSize, fInputTransportPacketCounter,
+			    fLastPCR - fFirstPCR));
+
+  // Try again:
+  doGetNextFrame();
+}
+
+void MPEG2IFrameIndexFromTransportStream::handleInputClosure(void* clientData) {
+  MPEG2IFrameIndexFromTransportStream* source
+    = (MPEG2IFrameIndexFromTransportStream*)clientData;
+  source->handleInputClosure1();
+}
+
+#define VIDEO_SEQUENCE_START_CODE 0xB3		// MPEG-1 or 2
+#define VISUAL_OBJECT_SEQUENCE_START_CODE 0xB0	// MPEG-4
+#define GROUP_START_CODE 0xB8			// MPEG-1 or 2
+#define GROUP_VOP_START_CODE 0xB3		// MPEG-4
+#define PICTURE_START_CODE 0x00			// MPEG-1 or 2
+#define VOP_START_CODE 0xB6			// MPEG-4
+
+void MPEG2IFrameIndexFromTransportStream::handleInputClosure1() {
+  if (++fClosureNumber == 1 && fParseBufferDataEnd > fParseBufferFrameStart
+      && fParseBufferDataEnd <= fParseBufferSize - 4) {
+    // This is the first time we saw EOF, and there's still data remaining to be
+    // parsed.  Hack: Append a Picture Header code to the end of the unparsed
+    // data, and try again.  This should use up all of the unparsed data.
+    fParseBuffer[fParseBufferDataEnd++] = 0;
+    fParseBuffer[fParseBufferDataEnd++] = 0;
+    fParseBuffer[fParseBufferDataEnd++] = 1;
+    fParseBuffer[fParseBufferDataEnd++] = PICTURE_START_CODE;
+
+    // Try again:
+    doGetNextFrame();
+  } else {
+    // Handle closure in the regular way:
+    handleClosure();
+  }
+}
+
+void MPEG2IFrameIndexFromTransportStream
+::analyzePAT(unsigned char* pkt, unsigned size) {
+  // Get the PMT_PID:
+  while (size >= 17) { // The table is large enough
+    u_int16_t program_number = (pkt[9]<<8) | pkt[10];
+    if (program_number != 0) {
+      fPMT_PID = ((pkt[11]&0x1F)<<8) | pkt[12];
+      return;
+    }
+
+    pkt += 4; size -= 4;
+  }
+}
+
+void MPEG2IFrameIndexFromTransportStream
+::analyzePMT(unsigned char* pkt, unsigned size) {
+  // Scan the "elementary_PID"s in the map, until we see the first video stream.
+
+  // First, get the "section_length", to get the table's size:
+  u_int16_t section_length = ((pkt[2]&0x0F)<<8) | pkt[3];
+  if ((unsigned)(4+section_length) < size) size = (4+section_length);
+
+  // Then, skip any descriptors following the "program_info_length":
+  if (size < 22) return; // not enough data
+  unsigned program_info_length = ((pkt[11]&0x0F)<<8) | pkt[12];
+  pkt += 13; size -= 13;
+  if (size < program_info_length) return; // not enough data
+  pkt += program_info_length; size -= program_info_length;
+
+  // Look at each ("stream_type","elementary_PID") pair, looking for a video stream:
+  while (size >= 9) {
+    u_int8_t stream_type = pkt[0];
+    u_int16_t elementary_PID = ((pkt[1]&0x1F)<<8) | pkt[2];
+    if (stream_type == 1 || stream_type == 2 ||
+	stream_type == 0x1B/*H.264 video*/ || stream_type == 0x24/*H.265 video*/) {
+      if (stream_type == 0x1B) fIsH264 = True;
+      else if (stream_type == 0x24) fIsH265 = True;
+      fVideo_PID = elementary_PID;
+      return;
+    }
+
+    u_int16_t ES_info_length = ((pkt[3]&0x0F)<<8) | pkt[4];
+    pkt += 5; size -= 5;
+    if (size < ES_info_length) return; // not enough data
+    pkt += ES_info_length; size -= ES_info_length;
+  }
+}
+
+Boolean MPEG2IFrameIndexFromTransportStream::deliverIndexRecord() {
+  IndexRecord* head = fHeadIndexRecord;
+  if (head == NULL) return False;
+
+  // Check whether the head record has been parsed yet:
+  if (head->recordType() == RECORD_UNPARSED) return False;
+
+  // Remove the head record (the one whose data we'll be delivering):
+  IndexRecord* next = head->next();
+  head->unlink();
+  if (next == head) {
+    fHeadIndexRecord = fTailIndexRecord = NULL;
+  } else {
+    fHeadIndexRecord = next;
+  }
+
+  if (head->recordType() == RECORD_JUNK) {
+    // Don't actually deliver the data to the client:
+    delete head;
+    // Try to deliver the next record instead:
+    return deliverIndexRecord();
+  }
+
+  // Deliver data from the head record:
+#ifdef DEBUG
+  envir() << "delivering: " << *head << "\n";
+#endif
+  if (fMaxSize < 11) {
+    fFrameSize = 0;
+  } else {
+    fTo[0] = (u_int8_t)(head->recordType());
+    fTo[1] = head->startOffset();
+    fTo[2] = head->size();
+    // Deliver the PCR, as 24 bits (integer part; little endian) + 8 bits (fractional part)
+    float pcr = head->pcr();
+    unsigned pcr_int = (unsigned)pcr;
+    u_int8_t pcr_frac = (u_int8_t)(256*(pcr-pcr_int));
+    fTo[3] = (unsigned char)(pcr_int);
+    fTo[4] = (unsigned char)(pcr_int>>8);
+    fTo[5] = (unsigned char)(pcr_int>>16);
+    fTo[6] = (unsigned char)(pcr_frac);
+    // Deliver the transport packet number (in little-endian order):
+    unsigned long tpn = head->transportPacketNumber();
+    fTo[7] = (unsigned char)(tpn);
+    fTo[8] = (unsigned char)(tpn>>8);
+    fTo[9] = (unsigned char)(tpn>>16);
+    fTo[10] = (unsigned char)(tpn>>24);
+    fFrameSize = 11;
+  }
+
+  // Free the (former) head record (as we're now done with it):
+  delete head;
+
+  // Complete delivery to the client:
+  afterGetting(this);
+  return True;
+}
+
+Boolean MPEG2IFrameIndexFromTransportStream::parseFrame() {
+  // At this point, we have a queue of >=0 (unparsed) index records, representing
+  // the data in the parse buffer from "fParseBufferFrameStart"
+  // to "fParseBufferDataEnd".  We now parse through this data, looking for
+  // a complete 'frame', where a 'frame', in this case, means:
+  // 	for MPEG video: a Video Sequence Header, GOP Header, Picture Header, or Slice
+  // 	for H.264 or H.265 video: a NAL unit
+
+  // Inspect the frame's initial 4-byte code, to make sure it starts with a system code:
+  if (fParseBufferDataEnd-fParseBufferFrameStart < 4) return False; // not enough data
+  unsigned numInitialBadBytes = 0;
+  unsigned char const* p = &fParseBuffer[fParseBufferFrameStart];
+  if (!(p[0] == 0 && p[1] == 0 && p[2] == 1)) {
+    // There's no system code at the beginning.  Parse until we find one:
+    if (fParseBufferParseEnd == fParseBufferFrameStart + 4) {
+      // Start parsing from the beginning of the frame data:
+      fParseBufferParseEnd = fParseBufferFrameStart;
+    }
+    unsigned char nextCode;
+    if (!parseToNextCode(nextCode)) return False;
+
+    numInitialBadBytes = fParseBufferParseEnd - fParseBufferFrameStart;
+    fParseBufferFrameStart = fParseBufferParseEnd;
+    fParseBufferParseEnd += 4; // skip over the code that we just saw
+    p = &fParseBuffer[fParseBufferFrameStart];
+  }
+
+  unsigned char curCode = p[3];
+  if (fIsH264) curCode &= 0x1F; // nal_unit_type
+  else if (fIsH265) curCode = (curCode&0x7E)>>1;
+
+  RecordType curRecordType;
+  unsigned char nextCode;
+  if (fIsH264) {
+    switch (curCode) {
+    case 1: // Coded slice of a non-IDR picture
+      curRecordType = RECORD_NAL_H264_NON_IFRAME;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    case 5: // Coded slice of an IDR picture
+      curRecordType = RECORD_NAL_H264_IFRAME;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    case 6: // Supplemental enhancement information (SEI)
+      curRecordType = RECORD_NAL_H264_SEI;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    case 7: // Sequence parameter set (SPS)
+      curRecordType = RECORD_NAL_H264_SPS;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    case 8: // Picture parameter set (PPS)
+      curRecordType = RECORD_NAL_H264_PPS;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    default:
+      curRecordType = RECORD_NAL_H264_OTHER;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    }
+  } else if (fIsH265) {
+    switch (curCode) {
+    case 19: // Coded slice segment of an IDR picture
+    case 20: // Coded slice segment of an IDR picture
+      curRecordType = RECORD_NAL_H265_IFRAME;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    case 32: // Video parameter set (VPS)
+      curRecordType = RECORD_NAL_H265_VPS;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    case 33: // Sequence parameter set (SPS)
+      curRecordType = RECORD_NAL_H265_SPS;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    case 34: // Picture parameter set (PPS)
+      curRecordType = RECORD_NAL_H265_PPS;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    default:
+      curRecordType = (curCode <= 31) ? RECORD_NAL_H265_NON_IFRAME : RECORD_NAL_H265_OTHER;
+      if (!parseToNextCode(nextCode)) return False;
+      break;
+    }
+  } else { // MPEG-1, 2, or 4
+    switch (curCode) {
+    case VIDEO_SEQUENCE_START_CODE:
+    case VISUAL_OBJECT_SEQUENCE_START_CODE:
+      curRecordType = RECORD_VSH;
+      while (1) {
+	if (!parseToNextCode(nextCode)) return False;
+	if (nextCode == GROUP_START_CODE ||
+	    nextCode == PICTURE_START_CODE || nextCode == VOP_START_CODE) break;
+	fParseBufferParseEnd += 4; // skip over the code that we just saw
+      }
+      break;
+    case GROUP_START_CODE:
+      curRecordType = RECORD_GOP;
+      while (1) {
+	if (!parseToNextCode(nextCode)) return False;
+	if (nextCode == PICTURE_START_CODE || nextCode == VOP_START_CODE) break;
+	fParseBufferParseEnd += 4; // skip over the code that we just saw
+      }
+      break;
+    default: // picture
+      curRecordType = RECORD_PIC_NON_IFRAME; // may get changed to IFRAME later
+      while (1) {
+        if (!parseToNextCode(nextCode)) return False;
+        if (nextCode == VIDEO_SEQUENCE_START_CODE ||
+	    nextCode == VISUAL_OBJECT_SEQUENCE_START_CODE ||
+	    nextCode == GROUP_START_CODE || nextCode == GROUP_VOP_START_CODE ||
+	    nextCode == PICTURE_START_CODE || nextCode == VOP_START_CODE) break;
+        fParseBufferParseEnd += 4; // skip over the code that we just saw
+      }
+      break;
+    }
+  }
+
+  if (curRecordType == RECORD_PIC_NON_IFRAME) {
+    if (curCode == VOP_START_CODE) { // MPEG-4
+      if ((fParseBuffer[fParseBufferFrameStart+4]&0xC0) == 0) {
+	// This is actually an I-frame.  Note it as such:
+	curRecordType = RECORD_PIC_IFRAME;
+      }
+    } else { // MPEG-1 or 2
+      if ((fParseBuffer[fParseBufferFrameStart+5]&0x38) == 0x08) {
+	// This is actually an I-frame.  Note it as such:
+	curRecordType = RECORD_PIC_IFRAME;
+      }
+    }
+  }
+
+  // There is now a parsed 'frame', from "fParseBufferFrameStart"
+  // to "fParseBufferParseEnd". Tag the corresponding index records to note this:
+  unsigned frameSize = fParseBufferParseEnd - fParseBufferFrameStart + numInitialBadBytes;
+#ifdef DEBUG
+  envir() << "parsed " << recordTypeStr[curRecordType] << "; length "
+	  << frameSize << "\n";
+#endif
+  for (IndexRecord* r = fHeadIndexRecord; ; r = r->next()) {
+    if (numInitialBadBytes >= r->size()) {
+      r->recordType() = RECORD_JUNK;
+      numInitialBadBytes -= r->size();
+    } else {
+      r->recordType() = curRecordType;
+    }
+    if (r == fHeadIndexRecord) r->setFirstFlag();
+    // indicates that this is the first record for this frame
+
+    if (r->size() > frameSize) {
+      // This record contains extra data that's not part of the frame.
+      // Shorten this record, and move the extra data to a new record
+      // that comes afterwards:
+      u_int8_t newOffset = r->startOffset() + frameSize;
+      u_int8_t newSize = r->size() - frameSize;
+      r->size() = frameSize;
+#ifdef DEBUG
+      envir() << "tagged record (modified): " << *r << "\n";
+#endif
+
+      IndexRecord* newRecord
+	= new IndexRecord(newOffset, newSize, r->transportPacketNumber(), r->pcr());
+      newRecord->addAfter(r);
+      if (fTailIndexRecord == r) fTailIndexRecord = newRecord;
+#ifdef DEBUG
+      envir() << "added extra record: " << *newRecord << "\n";
+#endif
+    } else {
+#ifdef DEBUG
+      envir() << "tagged record: " << *r << "\n";
+#endif
+    }
+    frameSize -= r->size();
+    if (frameSize == 0) break;
+    if (r == fTailIndexRecord) { // this shouldn't happen
+      envir() << "!!!!!Internal consistency error!!!!!\n";
+      return False;
+    }
+  }
+
+  // Finally, update our parse state (to skip over the now-parsed data):
+  fParseBufferFrameStart = fParseBufferParseEnd;
+  fParseBufferParseEnd += 4; // to skip over the next code (that we found)
+
+  return True;
+}
+
+Boolean MPEG2IFrameIndexFromTransportStream
+::parseToNextCode(unsigned char& nextCode) {
+  unsigned char const* p = &fParseBuffer[fParseBufferParseEnd];
+  unsigned char const* end = &fParseBuffer[fParseBufferDataEnd];
+  while (p <= end-4) {
+    if (p[2] > 1) p += 3; // common case (optimized)
+    else if (p[2] == 0) ++p;
+    else if (p[0] == 0 && p[1] == 0) { // && p[2] == 1
+      // We found a code here:
+      nextCode = p[3];
+      fParseBufferParseEnd = p - &fParseBuffer[0]; // where we've gotten to
+      return True;
+    } else p += 3;
+  }
+
+  fParseBufferParseEnd = p - &fParseBuffer[0]; // where we've gotten to
+  return False; // no luck this time
+}
+
+void MPEG2IFrameIndexFromTransportStream::compactParseBuffer() {
+#ifdef DEBUG
+  envir() << "Compacting parse buffer: [" << fParseBufferFrameStart
+	  << "," << fParseBufferParseEnd << "," << fParseBufferDataEnd << "]";
+#endif
+  memmove(&fParseBuffer[0], &fParseBuffer[fParseBufferFrameStart],
+	  fParseBufferDataEnd - fParseBufferFrameStart);
+  fParseBufferDataEnd -= fParseBufferFrameStart;
+  fParseBufferParseEnd -= fParseBufferFrameStart;
+  fParseBufferFrameStart = 0;
+#ifdef DEBUG
+  envir() << "-> [" << fParseBufferFrameStart
+	  << "," << fParseBufferParseEnd << "," << fParseBufferDataEnd << "]\n";
+#endif
+}
+
+void MPEG2IFrameIndexFromTransportStream::addToTail(IndexRecord* newIndexRecord) {
+#ifdef DEBUG
+  envir() << "adding new: " << *newIndexRecord << "\n";
+#endif
+  if (fTailIndexRecord == NULL) {
+    fHeadIndexRecord = fTailIndexRecord = newIndexRecord;
+  } else {
+    newIndexRecord->addAfter(fTailIndexRecord);
+    fTailIndexRecord = newIndexRecord;
+  }
+}
+
+////////// IndexRecord implementation //////////
+
+IndexRecord::IndexRecord(u_int8_t startOffset, u_int8_t size,
+			 unsigned long transportPacketNumber, float pcr)
+  : fNext(this), fPrev(this), fRecordType(RECORD_UNPARSED),
+    fStartOffset(startOffset), fSize(size),
+    fPCR(pcr), fTransportPacketNumber(transportPacketNumber) {
+}
+
+IndexRecord::~IndexRecord() {
+  IndexRecord* nextRecord = next();
+  unlink();
+  if (nextRecord != this) delete nextRecord;
+}
+
+void IndexRecord::addAfter(IndexRecord* prev) {
+  fNext = prev->fNext;
+  fPrev = prev;
+  prev->fNext->fPrev = this;
+  prev->fNext = this;
+}
+
+void IndexRecord::unlink() {
+  fNext->fPrev = fPrev;
+  fPrev->fNext = fNext;
+  fNext = fPrev = this;
+}
diff --git a/liveMedia/MPEG2TransportFileServerMediaSubsession.cpp b/liveMedia/MPEG2TransportFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..241e97a
--- /dev/null
+++ b/liveMedia/MPEG2TransportFileServerMediaSubsession.cpp
@@ -0,0 +1,352 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a MPEG-2 Transport Stream file.
+// Implementation
+
+#include "MPEG2TransportFileServerMediaSubsession.hh"
+#include "SimpleRTPSink.hh"
+
+MPEG2TransportFileServerMediaSubsession*
+MPEG2TransportFileServerMediaSubsession::createNew(UsageEnvironment& env,
+						   char const* fileName,
+						   char const* indexFileName,
+						   Boolean reuseFirstSource) {
+  MPEG2TransportStreamIndexFile* indexFile;
+  if (indexFileName != NULL && reuseFirstSource) {
+    // It makes no sense to support trick play if all clients use the same source.  Fix this:
+    env << "MPEG2TransportFileServerMediaSubsession::createNew(): ignoring the index file name, because \"reuseFirstSource\" is set\n";
+    indexFile = NULL;
+  } else {
+    indexFile = MPEG2TransportStreamIndexFile::createNew(env, indexFileName);
+  }
+  return new MPEG2TransportFileServerMediaSubsession(env, fileName, indexFile,
+						     reuseFirstSource);
+}
+
+MPEG2TransportFileServerMediaSubsession
+::MPEG2TransportFileServerMediaSubsession(UsageEnvironment& env,
+					  char const* fileName,
+					  MPEG2TransportStreamIndexFile* indexFile,
+					  Boolean reuseFirstSource)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource),
+    fIndexFile(indexFile), fDuration(0.0), fClientSessionHashTable(NULL) {
+  if (fIndexFile != NULL) { // we support 'trick play'
+    fDuration = fIndexFile->getPlayingDuration();
+    fClientSessionHashTable = HashTable::create(ONE_WORD_HASH_KEYS);
+  }
+}
+
+MPEG2TransportFileServerMediaSubsession
+::~MPEG2TransportFileServerMediaSubsession() {
+  if (fIndexFile != NULL) { // we support 'trick play'
+    Medium::close(fIndexFile);
+
+    // Clean out the client session hash table:
+    while (1) {
+      ClientTrickPlayState* client
+	= (ClientTrickPlayState*)(fClientSessionHashTable->RemoveNext());
+      if (client == NULL) break;
+      delete client;
+    }
+    delete fClientSessionHashTable;
+  }
+}
+
+#define TRANSPORT_PACKET_SIZE 188
+#define TRANSPORT_PACKETS_PER_NETWORK_PACKET 7
+// The product of these two numbers must be enough to fit within a network packet
+
+void MPEG2TransportFileServerMediaSubsession
+::startStream(unsigned clientSessionId, void* streamToken, TaskFunc* rtcpRRHandler,
+	      void* rtcpRRHandlerClientData, unsigned short& rtpSeqNum,
+	      unsigned& rtpTimestamp,
+	      ServerRequestAlternativeByteHandler* serverRequestAlternativeByteHandler,
+	      void* serverRequestAlternativeByteHandlerClientData) {
+  if (fIndexFile != NULL) { // we support 'trick play'
+    ClientTrickPlayState* client = lookupClient(clientSessionId);
+    if (client != NULL && client->areChangingScale()) {
+      // First, handle this like a "PAUSE", except that we back up to the previous VSH
+      client->updateStateOnPlayChange(True);
+      OnDemandServerMediaSubsession::pauseStream(clientSessionId, streamToken);
+
+      // Then, adjust for the change of scale:
+      client->updateStateOnScaleChange();
+    }
+  }
+
+  // Call the original, default version of this routine:
+  OnDemandServerMediaSubsession::startStream(clientSessionId, streamToken,
+					     rtcpRRHandler, rtcpRRHandlerClientData,
+					     rtpSeqNum, rtpTimestamp,
+					     serverRequestAlternativeByteHandler, serverRequestAlternativeByteHandlerClientData);
+}
+
+void MPEG2TransportFileServerMediaSubsession
+::pauseStream(unsigned clientSessionId, void* streamToken) {
+  if (fIndexFile != NULL) { // we support 'trick play'
+    ClientTrickPlayState* client = lookupClient(clientSessionId);
+    if (client != NULL) {
+      client->updateStateOnPlayChange(False);
+    }
+  }
+
+  // Call the original, default version of this routine:
+  OnDemandServerMediaSubsession::pauseStream(clientSessionId, streamToken);
+}
+
+void MPEG2TransportFileServerMediaSubsession
+::seekStream(unsigned clientSessionId, void* streamToken, double& seekNPT, double streamDuration, u_int64_t& numBytes) {
+  // Begin by calling the original, default version of this routine:
+  OnDemandServerMediaSubsession::seekStream(clientSessionId, streamToken, seekNPT, streamDuration, numBytes);
+
+  // Then, special handling specific to indexed Transport Stream files:
+  if (fIndexFile != NULL) { // we support 'trick play'
+    ClientTrickPlayState* client = lookupClient(clientSessionId);
+    if (client != NULL) {
+      unsigned long numTSPacketsToStream = client->updateStateFromNPT(seekNPT, streamDuration);
+      numBytes = numTSPacketsToStream*TRANSPORT_PACKET_SIZE;
+    }
+  }
+}
+
+void MPEG2TransportFileServerMediaSubsession
+::setStreamScale(unsigned clientSessionId, void* streamToken, float scale) {
+  if (fIndexFile != NULL) { // we support 'trick play'
+    ClientTrickPlayState* client = lookupClient(clientSessionId);
+    if (client != NULL) {
+      client->setNextScale(scale); // scale won't take effect until the next "PLAY"
+    }
+  }
+
+  // Call the original, default version of this routine:
+  OnDemandServerMediaSubsession::setStreamScale(clientSessionId, streamToken, scale);
+}
+
+void MPEG2TransportFileServerMediaSubsession
+::deleteStream(unsigned clientSessionId, void*& streamToken) {
+  if (fIndexFile != NULL) { // we support 'trick play'
+    ClientTrickPlayState* client = lookupClient(clientSessionId);
+    if (client != NULL) {
+      client->updateStateOnPlayChange(False);
+    }
+  }
+
+  // Call the original, default version of this routine:
+  OnDemandServerMediaSubsession::deleteStream(clientSessionId, streamToken);
+}
+
+ClientTrickPlayState* MPEG2TransportFileServerMediaSubsession::newClientTrickPlayState() {
+  return new ClientTrickPlayState(fIndexFile);
+}
+
+FramedSource* MPEG2TransportFileServerMediaSubsession
+::createNewStreamSource(unsigned clientSessionId, unsigned& estBitrate) {
+  // Create the video source:
+  unsigned const inputDataChunkSize
+    = TRANSPORT_PACKETS_PER_NETWORK_PACKET*TRANSPORT_PACKET_SIZE;
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(envir(), fFileName, inputDataChunkSize);
+  if (fileSource == NULL) return NULL;
+  fFileSize = fileSource->fileSize();
+
+  // Use the file size and the duration to estimate the stream's bitrate:
+  if (fFileSize > 0 && fDuration > 0.0) {
+    estBitrate = (unsigned)((int64_t)fFileSize/(125*fDuration) + 0.5); // kbps, rounded
+  } else {
+    estBitrate = 5000; // kbps, estimate
+  }
+
+
+  // Create a framer for the Transport Stream:
+  MPEG2TransportStreamFramer* framer
+    = MPEG2TransportStreamFramer::createNew(envir(), fileSource);
+
+  if (fIndexFile != NULL) { // we support 'trick play'
+    // Keep state for this client (if we don't already have it):
+    ClientTrickPlayState* client = lookupClient(clientSessionId);
+    if (client == NULL) {
+      client = newClientTrickPlayState();
+      fClientSessionHashTable->Add((char const*)clientSessionId, client);
+    }
+    client->setSource(framer);
+  }
+
+  return framer;
+}
+
+RTPSink* MPEG2TransportFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock,
+		   unsigned char /*rtpPayloadTypeIfDynamic*/,
+		   FramedSource* /*inputSource*/) {
+  return SimpleRTPSink::createNew(envir(), rtpGroupsock,
+				  33, 90000, "video", "MP2T",
+				  1, True, False /*no 'M' bit*/);
+}
+
+void MPEG2TransportFileServerMediaSubsession::testScaleFactor(float& scale) {
+  if (fIndexFile != NULL && fDuration > 0.0) {
+    // We support any integral scale, other than 0
+    int iScale = scale < 0.0 ? (int)(scale - 0.5f) : (int)(scale + 0.5f); // round
+    if (iScale == 0) iScale = 1;
+    scale = (float)iScale;
+  } else {
+    scale = 1.0f;
+  }
+}
+
+float MPEG2TransportFileServerMediaSubsession::duration() const {
+  return fDuration;
+}
+
+ClientTrickPlayState* MPEG2TransportFileServerMediaSubsession
+::lookupClient(unsigned clientSessionId) {
+  return (ClientTrickPlayState*)(fClientSessionHashTable->Lookup((char const*)clientSessionId));
+}
+
+
+////////// ClientTrickPlayState implementation //////////
+
+ClientTrickPlayState::ClientTrickPlayState(MPEG2TransportStreamIndexFile* indexFile)
+  : fIndexFile(indexFile),
+    fOriginalTransportStreamSource(NULL),
+    fTrickModeFilter(NULL), fTrickPlaySource(NULL),
+    fFramer(NULL),
+    fScale(1.0f), fNextScale(1.0f), fNPT(0.0f),
+    fTSRecordNum(0), fIxRecordNum(0) {
+}
+
+unsigned long ClientTrickPlayState::updateStateFromNPT(double npt, double streamDuration) {
+  fNPT = (float)npt;
+  // Map "fNPT" to the corresponding Transport Stream and Index record numbers:
+  unsigned long tsRecordNum, ixRecordNum;
+  fIndexFile->lookupTSPacketNumFromNPT(fNPT, tsRecordNum, ixRecordNum);
+
+  updateTSRecordNum();
+  if (tsRecordNum != fTSRecordNum) {
+    fTSRecordNum = tsRecordNum;
+    fIxRecordNum = ixRecordNum;
+
+    // Seek the source to the new record number:
+    reseekOriginalTransportStreamSource();
+    // Note: We assume that we're asked to seek only in normal
+    // (i.e., non trick play) mode, so we don't seek within the trick
+    // play source (if any).
+
+    fFramer->clearPIDStatusTable();
+  }
+
+  unsigned long numTSRecordsToStream = 0;
+  float pcrLimit = 0.0;
+  if (streamDuration > 0.0) {
+    // fNPT might have changed when we looked it up in the index file.  Adjust "streamDuration" accordingly:
+    streamDuration += npt - (double)fNPT;
+
+    if (streamDuration > 0.0) {
+      // Specify that we want to stream no more data than this.
+
+      if (fNextScale == 1.0f) {
+	// We'll be streaming from the original file.
+	// Use the index file to figure out how many Transport Packets we get to stream:
+	unsigned long toTSRecordNum, toIxRecordNum;    
+	float toNPT = (float)(fNPT + streamDuration);
+	fIndexFile->lookupTSPacketNumFromNPT(toNPT, toTSRecordNum, toIxRecordNum);
+	if (toTSRecordNum > tsRecordNum) { // sanity check
+	  numTSRecordsToStream = toTSRecordNum - tsRecordNum;
+	}
+      } else {
+	// We'll be streaming from the trick play stream.  
+	// It'd be difficult to figure out how many Transport Packets we need to stream, so instead set a PCR
+	// limit in the trick play stream.  (We rely upon the fact that PCRs in the trick play stream start at 0.0)
+	int direction = fNextScale < 0.0 ? -1 : 1;
+	pcrLimit = (float)(streamDuration/(fNextScale*direction));
+      }
+    }
+  }
+  fFramer->setNumTSPacketsToStream(numTSRecordsToStream);
+  fFramer->setPCRLimit(pcrLimit);
+
+  return numTSRecordsToStream;
+}
+
+void ClientTrickPlayState::updateStateOnScaleChange() {
+  fScale = fNextScale;
+
+  // Change our source objects to reflect the change in scale:
+  // First, close the existing trick play source (if any):
+  if (fTrickPlaySource != NULL) {
+    fTrickModeFilter->forgetInputSource();
+        // so that the underlying Transport Stream source doesn't get deleted by:
+    Medium::close(fTrickPlaySource);
+    fTrickPlaySource = NULL;
+    fTrickModeFilter = NULL;
+  }
+  if (fNextScale != 1.0f) {
+    // Create a new trick play filter from the original Transport Stream source:
+    UsageEnvironment& env = fIndexFile->envir(); // alias
+    fTrickModeFilter = MPEG2TransportStreamTrickModeFilter
+      ::createNew(env, fOriginalTransportStreamSource, fIndexFile, int(fNextScale));
+    fTrickModeFilter->seekTo(fTSRecordNum, fIxRecordNum);
+
+    // And generate a Transport Stream from this:
+    fTrickPlaySource = MPEG2TransportStreamFromESSource::createNew(env);
+    fTrickPlaySource->addNewVideoSource(fTrickModeFilter, fIndexFile->mpegVersion());
+
+    fFramer->changeInputSource(fTrickPlaySource);
+  } else {
+    // Switch back to the original Transport Stream source:
+    reseekOriginalTransportStreamSource();
+    fFramer->changeInputSource(fOriginalTransportStreamSource);
+  }
+}
+
+void ClientTrickPlayState::updateStateOnPlayChange(Boolean reverseToPreviousVSH) {
+  updateTSRecordNum();
+  if (fTrickPlaySource == NULL) {
+    // We were in regular (1x) play. Use the index file to look up the
+    // index record number and npt from the current transport number:
+    fIndexFile->lookupPCRFromTSPacketNum(fTSRecordNum, reverseToPreviousVSH, fNPT, fIxRecordNum);
+  } else {
+    // We were in trick mode, and so already have the index record number.
+    // Get the transport record number and npt from this:
+    fIxRecordNum = fTrickModeFilter->nextIndexRecordNum();
+    if ((long)fIxRecordNum < 0) fIxRecordNum = 0; // we were at the start of the file
+    unsigned long transportRecordNum;
+    float pcr;
+    u_int8_t offset, size, recordType; // all dummy
+    if (fIndexFile->readIndexRecordValues(fIxRecordNum, transportRecordNum,
+					  offset, size, pcr, recordType)) {
+      fTSRecordNum = transportRecordNum;
+      fNPT = pcr;
+    }
+  }
+}
+
+void ClientTrickPlayState::setSource(MPEG2TransportStreamFramer* framer) {
+  fFramer = framer;
+  fOriginalTransportStreamSource = (ByteStreamFileSource*)(framer->inputSource());
+}
+
+void ClientTrickPlayState::updateTSRecordNum(){
+  if (fFramer != NULL) fTSRecordNum += (unsigned long)(fFramer->tsPacketCount());
+}
+
+void ClientTrickPlayState::reseekOriginalTransportStreamSource() {
+  u_int64_t tsRecordNum64 = (u_int64_t)fTSRecordNum;
+  fOriginalTransportStreamSource->seekToByteAbsolute(tsRecordNum64*TRANSPORT_PACKET_SIZE);
+}
diff --git a/liveMedia/MPEG2TransportStreamAccumulator.cpp b/liveMedia/MPEG2TransportStreamAccumulator.cpp
new file mode 100644
index 0000000..200358b
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamAccumulator.cpp
@@ -0,0 +1,85 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Collects a stream of incoming MPEG Transport Stream packets into
+//  a chunk sufficiently large to send in a single outgoing (RTP or UDP) packet.
+// Implementation
+
+#include "MPEG2TransportStreamAccumulator.hh"
+
+MPEG2TransportStreamAccumulator*
+MPEG2TransportStreamAccumulator::createNew(UsageEnvironment& env,
+					   FramedSource* inputSource, unsigned maxPacketSize) {
+  return new MPEG2TransportStreamAccumulator(env, inputSource, maxPacketSize);
+}
+
+#ifndef TRANSPORT_PACKET_SIZE
+#define TRANSPORT_PACKET_SIZE 188
+#endif
+
+MPEG2TransportStreamAccumulator
+::MPEG2TransportStreamAccumulator(UsageEnvironment& env,
+				  FramedSource* inputSource, unsigned maxPacketSize)
+  : FramedFilter(env, inputSource),
+    fDesiredPacketSize(maxPacketSize < TRANSPORT_PACKET_SIZE ? TRANSPORT_PACKET_SIZE : (maxPacketSize/TRANSPORT_PACKET_SIZE)),
+    fNumBytesGathered(0) {
+}
+
+MPEG2TransportStreamAccumulator::~MPEG2TransportStreamAccumulator() {
+}
+
+void MPEG2TransportStreamAccumulator::doGetNextFrame() {
+  if (fNumBytesGathered >= fDesiredPacketSize) {
+    // Complete the delivery to the client:
+    fFrameSize = fNumBytesGathered;
+    fNumBytesGathered = 0;
+    afterGetting(this);
+  } else {
+    // Ask for more data (delivered directly to the client's buffer);
+    fInputSource->getNextFrame(fTo, fMaxSize, afterGettingFrame, this,
+			       FramedSource::handleClosure, this);
+  }
+}
+
+void MPEG2TransportStreamAccumulator
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned durationInMicroseconds) {
+  MPEG2TransportStreamAccumulator* accumulator
+    = (MPEG2TransportStreamAccumulator*)clientData;
+  accumulator->afterGettingFrame1(frameSize, numTruncatedBytes,
+				  presentationTime, durationInMicroseconds);
+}
+
+void MPEG2TransportStreamAccumulator
+::afterGettingFrame1(unsigned frameSize,
+		     unsigned numTruncatedBytes,
+		     struct timeval presentationTime,
+		     unsigned durationInMicroseconds) {
+  if (fNumBytesGathered == 0) { // this is the first frame of the new chunk
+    fPresentationTime = presentationTime;
+    fDurationInMicroseconds = 0;
+  }
+  fNumBytesGathered += frameSize;
+  fTo += frameSize;
+  fMaxSize -= frameSize;
+  fDurationInMicroseconds += durationInMicroseconds;
+
+  // Try again to complete delivery:
+  doGetNextFrame();
+}
diff --git a/liveMedia/MPEG2TransportStreamDemux.cpp b/liveMedia/MPEG2TransportStreamDemux.cpp
new file mode 100644
index 0000000..e789af7
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamDemux.cpp
@@ -0,0 +1,49 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Demultiplexer for a MPEG Transport Stream
+// Implementation
+
+#include "MPEG2TransportStreamDemux.hh"
+#include "MPEG2TransportStreamParser.hh"
+
+MPEG2TransportStreamDemux* MPEG2TransportStreamDemux
+::createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    FramedSource::onCloseFunc* onCloseFunc, void* onCloseClientData) {
+  return new MPEG2TransportStreamDemux(env, inputSource, onCloseFunc, onCloseClientData);
+}
+
+MPEG2TransportStreamDemux
+::MPEG2TransportStreamDemux(UsageEnvironment& env, FramedSource* inputSource,
+			    FramedSource::onCloseFunc* onCloseFunc, void* onCloseClientData)
+  : Medium(env),
+    fOnCloseFunc(onCloseFunc), fOnCloseClientData(onCloseClientData) {
+  fParser = new MPEG2TransportStreamParser(inputSource, handleEndOfFile, this);
+}
+
+MPEG2TransportStreamDemux::~MPEG2TransportStreamDemux() {
+  delete fParser;
+}
+
+void MPEG2TransportStreamDemux::handleEndOfFile(void* clientData) {
+  ((MPEG2TransportStreamDemux*)clientData)->handleEndOfFile();
+}
+
+void MPEG2TransportStreamDemux::handleEndOfFile() {
+  if (fOnCloseFunc != NULL) (*fOnCloseFunc)(fOnCloseClientData);
+  delete this;
+}
diff --git a/liveMedia/MPEG2TransportStreamDemuxedTrack.cpp b/liveMedia/MPEG2TransportStreamDemuxedTrack.cpp
new file mode 100644
index 0000000..38bd784
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamDemuxedTrack.cpp
@@ -0,0 +1,34 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A media track, demultiplexed from a MPEG Transport Stream file
+// Implementation
+
+#include "MPEG2TransportStreamParser.hh"
+
+MPEG2TransportStreamDemuxedTrack
+::MPEG2TransportStreamDemuxedTrack(MPEG2TransportStreamParser& ourParser, u_int16_t pid)
+  : FramedSource(ourParser.envir()),
+    fOurParser(ourParser), fPID(pid) {
+}
+
+MPEG2TransportStreamDemuxedTrack::~MPEG2TransportStreamDemuxedTrack() {
+}
+
+void MPEG2TransportStreamDemuxedTrack::doGetNextFrame() {
+  fOurParser.continueParsing();
+}
diff --git a/liveMedia/MPEG2TransportStreamDemuxedTrack.hh b/liveMedia/MPEG2TransportStreamDemuxedTrack.hh
new file mode 100644
index 0000000..886795e
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamDemuxedTrack.hh
@@ -0,0 +1,50 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A media track, demultiplexed from a MPEG Transport Stream file
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_DEMUXED_TRACK_HH
+#define _MPEG2_TRANSPORT_STREAM_DEMUXED_TRACK_HH
+
+#ifndef _MPEG2_TRANSPORT_STREAM_DEMUX_HH
+#include "MPEG2TransportStreamDemux.hh"
+#endif
+
+class MPEG2TransportStreamDemuxedTrack: public FramedSource {
+public:
+  MPEG2TransportStreamDemuxedTrack(class MPEG2TransportStreamParser& ourParser, u_int16_t pid);
+  virtual ~MPEG2TransportStreamDemuxedTrack();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private: // We are accessed only by "MPEG2TransportStreamParser" (a friend)
+  friend class MPEG2TransportStreamParser;
+  unsigned char* to() { return fTo; }
+  unsigned maxSize() { return fMaxSize; }
+  unsigned& frameSize() { return fFrameSize; }
+  unsigned& numTruncatedBytes() { return fNumTruncatedBytes; }
+  struct timeval& presentationTime() { return fPresentationTime; }
+
+private:
+  class MPEG2TransportStreamParser& fOurParser;
+  u_int16_t fPID;
+};
+
+#endif
diff --git a/liveMedia/MPEG2TransportStreamFramer.cpp b/liveMedia/MPEG2TransportStreamFramer.cpp
new file mode 100644
index 0000000..2da8081
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamFramer.cpp
@@ -0,0 +1,290 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that passes through (unchanged) chunks that contain an integral number
+// of MPEG-2 Transport Stream packets, but returning (in "fDurationInMicroseconds")
+// an updated estimate of the time gap between chunks.
+// Implementation
+
+#include "MPEG2TransportStreamFramer.hh"
+#include <GroupsockHelper.hh> // for "gettimeofday()"
+
+#define TRANSPORT_PACKET_SIZE 188
+
+////////// Definitions of constants that control the behavior of this code /////////
+
+#if !defined(NEW_DURATION_WEIGHT)
+#define NEW_DURATION_WEIGHT 0.5
+  // How much weight to give to the latest duration measurement (must be <= 1)
+#endif
+
+#if !defined(TIME_ADJUSTMENT_FACTOR)
+#define TIME_ADJUSTMENT_FACTOR 0.8
+  // A factor by which to adjust the duration estimate to ensure that the overall
+  // packet transmission times remains matched with the PCR times (which will be the
+  // times that we expect receivers to play the incoming packets).
+  // (must be <= 1)
+#endif
+
+#if !defined(MAX_PLAYOUT_BUFFER_DURATION)
+#define MAX_PLAYOUT_BUFFER_DURATION 0.1 // (seconds)
+#endif
+
+#if !defined(PCR_PERIOD_VARIATION_RATIO)
+#define PCR_PERIOD_VARIATION_RATIO 0.5
+#endif
+
+////////// PIDStatus //////////
+
+class PIDStatus {
+public:
+  PIDStatus(double _firstClock, double _firstRealTime)
+    : firstClock(_firstClock), lastClock(_firstClock),
+      firstRealTime(_firstRealTime), lastRealTime(_firstRealTime),
+      lastPacketNum(0) {
+  }
+
+  double firstClock, lastClock, firstRealTime, lastRealTime;
+  u_int64_t lastPacketNum;
+};
+
+
+////////// MPEG2TransportStreamFramer //////////
+
+MPEG2TransportStreamFramer* MPEG2TransportStreamFramer
+::createNew(UsageEnvironment& env, FramedSource* inputSource) {
+  return new MPEG2TransportStreamFramer(env, inputSource);
+}
+
+MPEG2TransportStreamFramer
+::MPEG2TransportStreamFramer(UsageEnvironment& env, FramedSource* inputSource)
+  : FramedFilter(env, inputSource),
+    fTSPacketCount(0), fTSPacketDurationEstimate(0.0), fTSPCRCount(0),
+    fLimitNumTSPacketsToStream(False), fNumTSPacketsToStream(0),
+    fLimitTSPacketsToStreamByPCR(False), fPCRLimit(0.0) {
+  fPIDStatusTable = HashTable::create(ONE_WORD_HASH_KEYS);
+}
+
+MPEG2TransportStreamFramer::~MPEG2TransportStreamFramer() {
+  clearPIDStatusTable();
+  delete fPIDStatusTable;
+}
+
+void MPEG2TransportStreamFramer::clearPIDStatusTable() {
+  PIDStatus* pidStatus;
+  while ((pidStatus = (PIDStatus*)fPIDStatusTable->RemoveNext()) != NULL) {
+    delete pidStatus;
+  }
+}
+
+void MPEG2TransportStreamFramer::setNumTSPacketsToStream(unsigned long numTSRecordsToStream) {
+  fNumTSPacketsToStream = numTSRecordsToStream;
+  fLimitNumTSPacketsToStream = numTSRecordsToStream > 0;
+}
+
+void MPEG2TransportStreamFramer::setPCRLimit(float pcrLimit) {
+  fPCRLimit = pcrLimit;
+  fLimitTSPacketsToStreamByPCR = pcrLimit != 0.0;
+}
+
+void MPEG2TransportStreamFramer::doGetNextFrame() {
+  if (fLimitNumTSPacketsToStream) {
+    if (fNumTSPacketsToStream == 0) {
+      handleClosure();
+      return;
+    }
+    if (fNumTSPacketsToStream*TRANSPORT_PACKET_SIZE < fMaxSize) {
+      fMaxSize = fNumTSPacketsToStream*TRANSPORT_PACKET_SIZE;
+    }
+  }
+
+  // Read directly from our input source into our client's buffer:
+  fFrameSize = 0;
+  fInputSource->getNextFrame(fTo, fMaxSize,
+			     afterGettingFrame, this,
+			     FramedSource::handleClosure, this);
+}
+
+void MPEG2TransportStreamFramer::doStopGettingFrames() {
+  FramedFilter::doStopGettingFrames();
+  fTSPacketCount = 0;
+  fTSPCRCount = 0;
+
+  clearPIDStatusTable();
+}
+
+void MPEG2TransportStreamFramer
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned /*numTruncatedBytes*/,
+		    struct timeval presentationTime,
+		    unsigned /*durationInMicroseconds*/) {
+  MPEG2TransportStreamFramer* framer = (MPEG2TransportStreamFramer*)clientData;
+  framer->afterGettingFrame1(frameSize, presentationTime);
+}
+
+#define TRANSPORT_SYNC_BYTE 0x47
+
+void MPEG2TransportStreamFramer::afterGettingFrame1(unsigned frameSize,
+						    struct timeval presentationTime) {
+  fFrameSize += frameSize;
+  unsigned const numTSPackets = fFrameSize/TRANSPORT_PACKET_SIZE;
+  fNumTSPacketsToStream -= numTSPackets;
+  fFrameSize = numTSPackets*TRANSPORT_PACKET_SIZE; // an integral # of TS packets
+  if (fFrameSize == 0) {
+    // We didn't read a complete TS packet; assume that the input source has closed.
+    handleClosure();
+    return;
+  }
+
+  // Make sure the data begins with a sync byte:
+  unsigned syncBytePosition;
+  for (syncBytePosition = 0; syncBytePosition < fFrameSize; ++syncBytePosition) {
+    if (fTo[syncBytePosition] == TRANSPORT_SYNC_BYTE) break;
+  }
+  if (syncBytePosition == fFrameSize) {
+    envir() << "No Transport Stream sync byte in data.";
+    handleClosure();
+    return;
+  } else if (syncBytePosition > 0) {
+    // There's a sync byte, but not at the start of the data.  Move the good data
+    // to the start of the buffer, then read more to fill it up again:
+    memmove(fTo, &fTo[syncBytePosition], fFrameSize - syncBytePosition);
+    fFrameSize -= syncBytePosition;
+    fInputSource->getNextFrame(&fTo[fFrameSize], syncBytePosition,
+			       afterGettingFrame, this,
+			       FramedSource::handleClosure, this);
+    return;
+  } // else normal case: the data begins with a sync byte
+
+  fPresentationTime = presentationTime;
+
+  // Scan through the TS packets that we read, and update our estimate of
+  // the duration of each packet:
+  struct timeval tvNow;
+  gettimeofday(&tvNow, NULL);
+  double timeNow = tvNow.tv_sec + tvNow.tv_usec/1000000.0;
+  for (unsigned i = 0; i < numTSPackets; ++i) {
+    if (!updateTSPacketDurationEstimate(&fTo[i*TRANSPORT_PACKET_SIZE], timeNow)) {
+      // We hit a preset limit (based on PCR) within the stream.  Handle this as if the input source has closed:
+      handleClosure();
+      return;
+    }
+  }
+
+  fDurationInMicroseconds
+    = numTSPackets * (unsigned)(fTSPacketDurationEstimate*1000000);
+
+  // Complete the delivery to our client:
+  afterGetting(this);
+}
+
+Boolean MPEG2TransportStreamFramer::updateTSPacketDurationEstimate(unsigned char* pkt, double timeNow) {
+  // Sanity check: Make sure we start with the sync byte:
+  if (pkt[0] != TRANSPORT_SYNC_BYTE) {
+    envir() << "Missing sync byte!\n";
+    return True;
+  }
+
+  ++fTSPacketCount;
+
+  // If this packet doesn't contain a PCR, then we're not interested in it:
+  u_int8_t const adaptation_field_control = (pkt[3]&0x30)>>4;
+  if (adaptation_field_control != 2 && adaptation_field_control != 3) return True;
+      // there's no adaptation_field
+
+  u_int8_t const adaptation_field_length = pkt[4];
+  if (adaptation_field_length == 0) return True;
+
+  u_int8_t const discontinuity_indicator = pkt[5]&0x80;
+  u_int8_t const pcrFlag = pkt[5]&0x10;
+  if (pcrFlag == 0) return True; // no PCR
+
+  // There's a PCR.  Get it, and the PID:
+  ++fTSPCRCount;
+  u_int32_t pcrBaseHigh = (pkt[6]<<24)|(pkt[7]<<16)|(pkt[8]<<8)|pkt[9];
+  double clock = pcrBaseHigh/45000.0;
+  if ((pkt[10]&0x80) != 0) clock += 1/90000.0; // add in low-bit (if set)
+  unsigned short pcrExt = ((pkt[10]&0x01)<<8) | pkt[11];
+  clock += pcrExt/27000000.0;
+  if (fLimitTSPacketsToStreamByPCR) {
+    if (clock > fPCRLimit) {
+      // We've hit a preset limit within the stream:
+      return False;
+    }
+  }
+
+  unsigned pid = ((pkt[1]&0x1F)<<8) | pkt[2];
+
+  // Check whether we already have a record of a PCR for this PID:
+  PIDStatus* pidStatus = (PIDStatus*)(fPIDStatusTable->Lookup((char*)pid));
+
+  if (pidStatus == NULL) {
+    // We're seeing this PID's PCR for the first time:
+    pidStatus = new PIDStatus(clock, timeNow);
+    fPIDStatusTable->Add((char*)pid, pidStatus);
+#ifdef DEBUG_PCR
+    fprintf(stderr, "PID 0x%x, FIRST PCR 0x%08x+%d:%03x == %f @ %f, pkt #%lu\n", pid, pcrBaseHigh, pkt[10]>>7, pcrExt, clock, timeNow, fTSPacketCount);
+#endif
+  } else {
+    // We've seen this PID's PCR before; update our per-packet duration estimate:
+    int64_t packetsSinceLast = (int64_t)(fTSPacketCount - pidStatus->lastPacketNum);
+      // it's "int64_t" because some compilers can't convert "u_int64_t" -> "double"
+    double durationPerPacket = (clock - pidStatus->lastClock)/packetsSinceLast;
+
+    // Hack (suggested by "Romain"): Don't update our estimate if this PCR appeared unusually quickly.
+    // (This can produce more accurate estimates for wildly VBR streams.)
+    double meanPCRPeriod = 0.0;
+    if (fTSPCRCount > 0) {
+      double tsPacketCount = (double)(int64_t)fTSPacketCount;
+      double tsPCRCount = (double)(int64_t)fTSPCRCount;
+      meanPCRPeriod = tsPacketCount/tsPCRCount;
+      if (packetsSinceLast < meanPCRPeriod*PCR_PERIOD_VARIATION_RATIO) return True;
+    }
+
+    if (fTSPacketDurationEstimate == 0.0) { // we've just started
+      fTSPacketDurationEstimate = durationPerPacket;
+    } else if (discontinuity_indicator == 0 && durationPerPacket >= 0.0) {
+      fTSPacketDurationEstimate
+	= durationPerPacket*NEW_DURATION_WEIGHT
+	+ fTSPacketDurationEstimate*(1-NEW_DURATION_WEIGHT);
+
+      // Also adjust the duration estimate to try to ensure that the transmission
+      // rate matches the playout rate:
+      double transmitDuration = timeNow - pidStatus->firstRealTime;
+      double playoutDuration = clock - pidStatus->firstClock;
+      if (transmitDuration > playoutDuration) {
+	fTSPacketDurationEstimate *= TIME_ADJUSTMENT_FACTOR; // reduce estimate
+      } else if (transmitDuration + MAX_PLAYOUT_BUFFER_DURATION < playoutDuration) {
+	fTSPacketDurationEstimate /= TIME_ADJUSTMENT_FACTOR; // increase estimate
+      }
+    } else {
+      // the PCR has a discontinuity from its previous value; don't use it now,
+      // but reset our PCR and real-time values to compensate:
+      pidStatus->firstClock = clock;
+      pidStatus->firstRealTime = timeNow;
+    }
+#ifdef DEBUG_PCR
+    fprintf(stderr, "PID 0x%x, PCR 0x%08x+%d:%03x == %f @ %f (diffs %f @ %f), pkt #%lu, discon %d => this duration %f, new estimate %f, mean PCR period=%f\n", pid, pcrBaseHigh, pkt[10]>>7, pcrExt, clock, timeNow, clock - pidStatus->firstClock, timeNow - pidStatus->firstRealTime, fTSPacketCount, discontinuity_indicator != 0, durationPerPacket, fTSPacketDurationEstimate, meanPCRPeriod );
+#endif
+  }
+
+  pidStatus->lastClock = clock;
+  pidStatus->lastRealTime = timeNow;
+  pidStatus->lastPacketNum = fTSPacketCount;
+
+  return True;
+}
diff --git a/liveMedia/MPEG2TransportStreamFromESSource.cpp b/liveMedia/MPEG2TransportStreamFromESSource.cpp
new file mode 100644
index 0000000..2586e16
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamFromESSource.cpp
@@ -0,0 +1,266 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter for converting one or more MPEG Elementary Streams
+// to a MPEG-2 Transport Stream
+// Implementation
+
+#include "MPEG2TransportStreamFromESSource.hh"
+
+#define SIMPLE_PES_HEADER_SIZE 14
+#define INPUT_BUFFER_SIZE (SIMPLE_PES_HEADER_SIZE + 2*MPEG2TransportStreamFromESSource::maxInputESFrameSize)
+#define LOW_WATER_MARK 1000 // <= MPEG2TransportStreamFromESSource::maxInputESFrameSize
+
+////////// InputESSourceRecord definition //////////
+
+class InputESSourceRecord {
+public:
+  InputESSourceRecord(MPEG2TransportStreamFromESSource& parent,
+		      FramedSource* inputSource,
+		      u_int8_t streamId, int mpegVersion,
+		      InputESSourceRecord* next, int16_t PID = -1);
+  virtual ~InputESSourceRecord();
+
+  InputESSourceRecord* next() const { return fNext; }
+  FramedSource* inputSource() const { return fInputSource; }
+
+  void askForNewData();
+  Boolean deliverBufferToClient();
+
+  unsigned char* buffer() const { return fInputBuffer; }
+  void reset() {
+    // Reset the buffer for future use:
+    fInputBufferBytesAvailable = 0;
+    fInputBufferInUse = False;
+  }
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+                          unsigned numTruncatedBytes,
+                          struct timeval presentationTime);
+
+private:
+  InputESSourceRecord* fNext;
+  MPEG2TransportStreamFromESSource& fParent;
+  FramedSource* fInputSource;
+  u_int8_t fStreamId;
+  int fMPEGVersion;
+  unsigned char* fInputBuffer;
+  unsigned fInputBufferBytesAvailable;
+  Boolean fInputBufferInUse;
+  MPEG1or2Demux::SCR fSCR;
+  int16_t fPID;
+};
+
+
+////////// MPEG2TransportStreamFromESSource implementation //////////
+
+unsigned MPEG2TransportStreamFromESSource::maxInputESFrameSize = 100000; // bytes
+
+MPEG2TransportStreamFromESSource* MPEG2TransportStreamFromESSource
+::createNew(UsageEnvironment& env) {
+  return new MPEG2TransportStreamFromESSource(env);
+}
+
+void MPEG2TransportStreamFromESSource
+::addNewVideoSource(FramedSource* inputSource, int mpegVersion, int16_t PID) {
+  u_int8_t streamId = 0xE0 | (fVideoSourceCounter++&0x0F);
+  addNewInputSource(inputSource, streamId, mpegVersion, PID);
+  fHaveVideoStreams = True;
+}
+
+void MPEG2TransportStreamFromESSource
+::addNewAudioSource(FramedSource* inputSource, int mpegVersion, int16_t PID) {
+  u_int8_t streamId = 0xC0 | (fAudioSourceCounter++&0x0F);
+  addNewInputSource(inputSource, streamId, mpegVersion, PID);
+}
+
+MPEG2TransportStreamFromESSource
+::MPEG2TransportStreamFromESSource(UsageEnvironment& env)
+  : MPEG2TransportStreamMultiplexor(env),
+    fInputSources(NULL), fVideoSourceCounter(0), fAudioSourceCounter(0),
+    fAwaitingBackgroundDelivery(False) {
+  fHaveVideoStreams = False; // unless we add a video source
+}
+
+MPEG2TransportStreamFromESSource::~MPEG2TransportStreamFromESSource() {
+  doStopGettingFrames();
+  delete fInputSources;
+}
+
+void MPEG2TransportStreamFromESSource::doStopGettingFrames() {
+  // Stop each input source:
+  for (InputESSourceRecord* sourceRec = fInputSources; sourceRec != NULL;
+       sourceRec = sourceRec->next()) {
+    sourceRec->inputSource()->stopGettingFrames();
+  }
+}
+
+void MPEG2TransportStreamFromESSource
+::awaitNewBuffer(unsigned char* oldBuffer) {
+  InputESSourceRecord* sourceRec;
+  // Begin by resetting the old buffer:
+  if (oldBuffer != NULL) {
+    for (sourceRec = fInputSources; sourceRec != NULL;
+	 sourceRec = sourceRec->next()) {
+      if (sourceRec->buffer() == oldBuffer) {
+	sourceRec->reset();
+	break;
+      }
+    }
+    fAwaitingBackgroundDelivery = False;
+  }
+
+  if (isCurrentlyAwaitingData()) {
+    // Try to deliver one filled-in buffer to the client:
+    for (sourceRec = fInputSources; sourceRec != NULL;
+	 sourceRec = sourceRec->next()) {
+      if (sourceRec->deliverBufferToClient()) return;
+    }
+    fAwaitingBackgroundDelivery = True;
+  }
+
+  // No filled-in buffers are available. Ask each of our inputs for data:
+  for (sourceRec = fInputSources; sourceRec != NULL;
+       sourceRec = sourceRec->next()) {
+    sourceRec->askForNewData();
+  }
+}
+
+void MPEG2TransportStreamFromESSource
+::addNewInputSource(FramedSource* inputSource,
+		    u_int8_t streamId, int mpegVersion, int16_t PID) {
+  if (inputSource == NULL) return;
+  fInputSources = new InputESSourceRecord(*this, inputSource, streamId,
+					  mpegVersion, fInputSources, PID);
+}
+
+
+////////// InputESSourceRecord implementation //////////
+
+InputESSourceRecord
+::InputESSourceRecord(MPEG2TransportStreamFromESSource& parent,
+		      FramedSource* inputSource,
+		      u_int8_t streamId, int mpegVersion,
+		      InputESSourceRecord* next, int16_t PID)
+  : fNext(next), fParent(parent), fInputSource(inputSource),
+    fStreamId(streamId), fMPEGVersion(mpegVersion), fPID(PID) {
+  fInputBuffer = new unsigned char[INPUT_BUFFER_SIZE];
+  reset();
+}
+
+InputESSourceRecord::~InputESSourceRecord() {
+  Medium::close(fInputSource);
+  delete[] fInputBuffer;
+  delete fNext;
+}
+
+void InputESSourceRecord::askForNewData() {
+  if (fInputBufferInUse) return;
+
+  if (fInputBufferBytesAvailable == 0) {
+    // Reset our buffer, by adding a simple PES header at the start:
+    fInputBuffer[0] = 0; fInputBuffer[1] = 0; fInputBuffer[2] = 1;
+    fInputBuffer[3] = fStreamId;
+    fInputBuffer[4] = 0; fInputBuffer[5] = 0; // fill in later with the length
+    fInputBuffer[6] = 0x80;
+    fInputBuffer[7] = 0x80; // include a PTS
+    fInputBuffer[8] = 5; // PES_header_data_length (enough for a PTS)
+    // fInputBuffer[9..13] will be the PTS; fill this in later
+    fInputBufferBytesAvailable = SIMPLE_PES_HEADER_SIZE;
+  }
+  if (fInputBufferBytesAvailable < LOW_WATER_MARK &&
+      !fInputSource->isCurrentlyAwaitingData()) {
+    // We don't yet have enough data in our buffer.  Arrange to read more:
+    fInputSource->getNextFrame(&fInputBuffer[fInputBufferBytesAvailable],
+                               INPUT_BUFFER_SIZE-fInputBufferBytesAvailable,
+                               afterGettingFrame, this,
+                               FramedSource::handleClosure, &fParent);
+  }
+}
+
+Boolean InputESSourceRecord::deliverBufferToClient() {
+  if (fInputBufferInUse || fInputBufferBytesAvailable < LOW_WATER_MARK) return False;
+
+  // Fill in the PES_packet_length field that we left unset before:
+  unsigned PES_packet_length = fInputBufferBytesAvailable - 6;
+  if (PES_packet_length > 0xFFFF) {
+    // Set the PES_packet_length field to 0.  This indicates an unbounded length (see ISO 13818-1, 2.4.3.7)
+    PES_packet_length = 0;
+  }
+  fInputBuffer[4] = PES_packet_length>>8;
+  fInputBuffer[5] = PES_packet_length;
+
+  // Fill in the PES PTS (from our SCR):
+  fInputBuffer[9] = 0x20|(fSCR.highBit<<3)|(fSCR.remainingBits>>29)|0x01;
+  fInputBuffer[10] = fSCR.remainingBits>>22;
+  fInputBuffer[11] = (fSCR.remainingBits>>14)|0x01;
+  fInputBuffer[12] = fSCR.remainingBits>>7;
+  fInputBuffer[13] = (fSCR.remainingBits<<1)|0x01;
+
+  fInputBufferInUse = True;
+
+  // Do the delivery:
+  fParent.handleNewBuffer(fInputBuffer, fInputBufferBytesAvailable,
+			 fMPEGVersion, fSCR, fPID);
+
+  return True;
+}
+
+void InputESSourceRecord
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned /*durationInMicroseconds*/) {
+  InputESSourceRecord* source = (InputESSourceRecord*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes, presentationTime);
+}
+void InputESSourceRecord
+::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+		     struct timeval presentationTime) {
+  if (numTruncatedBytes > 0) {
+    fParent.envir() << "MPEG2TransportStreamFromESSource: input buffer too small; increase \"MPEG2TransportStreamFromESSource::maxInputESFrameSize\" by at least "
+		    << numTruncatedBytes << " bytes!\n";
+  }
+
+  if (fInputBufferBytesAvailable == SIMPLE_PES_HEADER_SIZE) {
+    // Use this presentationTime for our SCR:
+    fSCR.highBit
+      = ((presentationTime.tv_sec*45000 + (presentationTime.tv_usec*9)/200)&
+	 0x80000000) != 0;
+    fSCR.remainingBits
+      = presentationTime.tv_sec*90000 + (presentationTime.tv_usec*9)/100;
+    fSCR.extension = (presentationTime.tv_usec*9)%100;
+#ifdef DEBUG_SCR
+    fprintf(stderr, "PES header: stream_id 0x%02x, pts: %u.%06u => SCR 0x%x%08x:%03x\n", fStreamId, (unsigned)presentationTime.tv_sec, (unsigned)presentationTime.tv_usec, fSCR.highBit, fSCR.remainingBits, fSCR.extension);
+#endif
+  }
+
+  fInputBufferBytesAvailable += frameSize;
+
+  fParent.fPresentationTime = presentationTime;
+
+  // Now that we have new input data, check if we can deliver to the client:
+  if (fParent.fAwaitingBackgroundDelivery) {
+    fParent.fAwaitingBackgroundDelivery = False;
+    fParent.awaitNewBuffer(NULL);
+  }
+}
diff --git a/liveMedia/MPEG2TransportStreamFromPESSource.cpp b/liveMedia/MPEG2TransportStreamFromPESSource.cpp
new file mode 100644
index 0000000..45d8cbc
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamFromPESSource.cpp
@@ -0,0 +1,74 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter for converting a stream of MPEG PES packets to a MPEG-2 Transport Stream
+// Implementation
+
+#include "MPEG2TransportStreamFromPESSource.hh"
+
+#define MAX_PES_PACKET_SIZE (6+65535)
+
+MPEG2TransportStreamFromPESSource* MPEG2TransportStreamFromPESSource
+::createNew(UsageEnvironment& env, MPEG1or2DemuxedElementaryStream* inputSource) {
+  return new MPEG2TransportStreamFromPESSource(env, inputSource);
+}
+
+MPEG2TransportStreamFromPESSource
+::MPEG2TransportStreamFromPESSource(UsageEnvironment& env,
+				    MPEG1or2DemuxedElementaryStream* inputSource)
+  : MPEG2TransportStreamMultiplexor(env),
+    fInputSource(inputSource) {
+  fInputBuffer = new unsigned char[MAX_PES_PACKET_SIZE];
+}
+
+MPEG2TransportStreamFromPESSource::~MPEG2TransportStreamFromPESSource() {
+  Medium::close(fInputSource);
+  delete[] fInputBuffer;
+}
+
+void MPEG2TransportStreamFromPESSource::doStopGettingFrames() {
+  fInputSource->stopGettingFrames();
+}
+
+void MPEG2TransportStreamFromPESSource
+::awaitNewBuffer(unsigned char* /*oldBuffer*/) {
+  fInputSource->getNextFrame(fInputBuffer, MAX_PES_PACKET_SIZE,
+			     afterGettingFrame, this,
+			     FramedSource::handleClosure, this);
+}
+
+void MPEG2TransportStreamFromPESSource
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned durationInMicroseconds) {
+  MPEG2TransportStreamFromPESSource* source
+    = (MPEG2TransportStreamFromPESSource*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes,
+			    presentationTime, durationInMicroseconds);
+}
+
+void MPEG2TransportStreamFromPESSource
+::afterGettingFrame1(unsigned frameSize,
+		     unsigned /*numTruncatedBytes*/,
+		     struct timeval /*presentationTime*/,
+		     unsigned /*durationInMicroseconds*/) {
+  if (frameSize < 4) return;
+
+  handleNewBuffer(fInputBuffer, frameSize,
+		  fInputSource->mpegVersion(), fInputSource->lastSeenSCR());
+}
diff --git a/liveMedia/MPEG2TransportStreamIndexFile.cpp b/liveMedia/MPEG2TransportStreamIndexFile.cpp
new file mode 100644
index 0000000..8499959
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamIndexFile.cpp
@@ -0,0 +1,349 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class that encapsulates MPEG-2 Transport Stream 'index files'/
+// These index files are used to implement 'trick play' operations
+// (seek-by-time, fast forward, reverse play) on Transport Stream files.
+//
+// Implementation
+
+#include "MPEG2TransportStreamIndexFile.hh"
+#include "InputFile.hh"
+
+MPEG2TransportStreamIndexFile
+::MPEG2TransportStreamIndexFile(UsageEnvironment& env, char const* indexFileName)
+  : Medium(env),
+    fFileName(strDup(indexFileName)), fFid(NULL), fMPEGVersion(0), fCurrentIndexRecordNum(0),
+    fCachedPCR(0.0f), fCachedTSPacketNumber(0), fNumIndexRecords(0) {
+  // Get the file size, to determine how many index records it contains:
+  u_int64_t indexFileSize = GetFileSize(indexFileName, NULL);
+  if (indexFileSize % INDEX_RECORD_SIZE != 0) {
+    env << "Warning: Size of the index file \"" << indexFileName
+ 	<< "\" (" << (unsigned)indexFileSize
+	<< ") is not a multiple of the index record size ("
+	<< INDEX_RECORD_SIZE << ")\n";
+  }
+  fNumIndexRecords = (unsigned long)(indexFileSize/INDEX_RECORD_SIZE);
+}
+
+MPEG2TransportStreamIndexFile* MPEG2TransportStreamIndexFile
+::createNew(UsageEnvironment& env, char const* indexFileName) {
+  if (indexFileName == NULL) return NULL;
+  MPEG2TransportStreamIndexFile* indexFile
+    = new MPEG2TransportStreamIndexFile(env, indexFileName);
+
+  // Reject empty or non-existent index files:
+  if (indexFile->getPlayingDuration() == 0.0f) {
+    delete indexFile;
+    indexFile = NULL;
+  }
+
+  return indexFile;
+}
+
+MPEG2TransportStreamIndexFile::~MPEG2TransportStreamIndexFile() {
+  closeFid();
+  delete[] fFileName;
+}
+
+void MPEG2TransportStreamIndexFile
+::lookupTSPacketNumFromNPT(float& npt, unsigned long& tsPacketNumber,
+			   unsigned long& indexRecordNumber) {
+  if (npt <= 0.0 || fNumIndexRecords == 0) { // Fast-track a common case:
+    npt = 0.0f;
+    tsPacketNumber = indexRecordNumber = 0;
+    return;
+  }
+
+  // If "npt" is the same as the one that we last looked up, return its cached result:
+  if (npt == fCachedPCR) {
+    tsPacketNumber = fCachedTSPacketNumber;
+    indexRecordNumber = fCachedIndexRecordNumber;
+    return;
+  }
+
+  // Search for the pair of neighboring index records whose PCR values span "npt".
+  // Use the 'regula-falsi' method.
+  Boolean success = False;
+  unsigned long ixFound = 0;
+  do {
+    unsigned long ixLeft = 0, ixRight = fNumIndexRecords-1;
+    float pcrLeft = 0.0f, pcrRight;
+    if (!readIndexRecord(ixRight)) break;
+    pcrRight = pcrFromBuf();
+    if (npt > pcrRight) npt = pcrRight;
+        // handle "npt" too large by seeking to the last frame of the file
+
+    while (ixRight-ixLeft > 1 && pcrLeft < npt && npt <= pcrRight) {
+      unsigned long ixNew = ixLeft
+	+ (unsigned long)(((npt-pcrLeft)/(pcrRight-pcrLeft))*(ixRight-ixLeft));
+      if (ixNew == ixLeft || ixNew == ixRight) {
+	// use bisection instead:
+	ixNew = (ixLeft+ixRight)/2;
+      }
+      if (!readIndexRecord(ixNew)) break;
+      float pcrNew = pcrFromBuf();
+      if (pcrNew < npt) {
+	pcrLeft = pcrNew;
+	ixLeft = ixNew;
+      } else {
+	pcrRight = pcrNew;
+	ixRight = ixNew;
+      }
+    }
+    if (ixRight-ixLeft > 1 || npt <= pcrLeft || npt > pcrRight) break; // bad PCR values in index file?
+
+    ixFound = ixRight;
+    // "Rewind' until we reach the start of a Video Sequence or GOP header:
+    success = rewindToCleanPoint(ixFound);
+  } while (0);
+
+  if (success && readIndexRecord(ixFound)) {
+    // Return (and cache) information from record "ixFound":
+    npt = fCachedPCR = pcrFromBuf();
+    tsPacketNumber = fCachedTSPacketNumber = tsPacketNumFromBuf();
+    indexRecordNumber = fCachedIndexRecordNumber = ixFound;
+  } else {
+    // An error occurred: Return the default values, for npt == 0:
+    npt = 0.0f;
+    tsPacketNumber = indexRecordNumber = 0;
+  }
+  closeFid();
+}
+
+void MPEG2TransportStreamIndexFile
+::lookupPCRFromTSPacketNum(unsigned long& tsPacketNumber, Boolean reverseToPreviousCleanPoint,
+			   float& pcr, unsigned long& indexRecordNumber) {
+  if (tsPacketNumber == 0 || fNumIndexRecords == 0) { // Fast-track a common case:
+    pcr = 0.0f;
+    indexRecordNumber = 0;
+    return;
+  }
+
+  // If "tsPacketNumber" is the same as the one that we last looked up, return its cached result:
+  if (tsPacketNumber == fCachedTSPacketNumber) {
+    pcr = fCachedPCR;
+    indexRecordNumber = fCachedIndexRecordNumber;
+    return;
+  }
+
+  // Search for the pair of neighboring index records whose TS packet #s span "tsPacketNumber".
+  // Use the 'regula-falsi' method.
+  Boolean success = False;
+  unsigned long ixFound = 0;
+  do {
+    unsigned long ixLeft = 0, ixRight = fNumIndexRecords-1;
+    unsigned long tsLeft = 0, tsRight;
+    if (!readIndexRecord(ixRight)) break;
+    tsRight = tsPacketNumFromBuf();
+    if (tsPacketNumber > tsRight) tsPacketNumber = tsRight;
+        // handle "tsPacketNumber" too large by seeking to the last frame of the file
+
+    while (ixRight-ixLeft > 1 && tsLeft < tsPacketNumber && tsPacketNumber <= tsRight) {
+      unsigned long ixNew = ixLeft
+	+ (unsigned long)(((tsPacketNumber-tsLeft)/(tsRight-tsLeft))*(ixRight-ixLeft));
+      if (ixNew == ixLeft || ixNew == ixRight) {
+	// Use bisection instead:
+	ixNew = (ixLeft+ixRight)/2;
+      }
+      if (!readIndexRecord(ixNew)) break;
+      unsigned long tsNew = tsPacketNumFromBuf();
+      if (tsNew < tsPacketNumber) {
+	tsLeft = tsNew;
+	ixLeft = ixNew;
+      } else {
+	tsRight = tsNew;
+	ixRight = ixNew;
+      }
+    }
+    if (ixRight-ixLeft > 1 || tsPacketNumber <= tsLeft || tsPacketNumber > tsRight) break; // bad PCR values in index file?
+
+    ixFound = ixRight;
+    if (reverseToPreviousCleanPoint) {
+      // "Rewind' until we reach the start of a Video Sequence or GOP header:
+      success = rewindToCleanPoint(ixFound);
+    } else {
+      success = True;
+    }
+  } while (0);
+
+  if (success && readIndexRecord(ixFound)) {
+    // Return (and cache) information from record "ixFound":
+    pcr = fCachedPCR = pcrFromBuf();
+    fCachedTSPacketNumber = tsPacketNumFromBuf();
+    if (reverseToPreviousCleanPoint) tsPacketNumber = fCachedTSPacketNumber;
+    indexRecordNumber = fCachedIndexRecordNumber = ixFound;
+  } else {
+    // An error occurred: Return the default values, for tsPacketNumber == 0:
+    pcr = 0.0f;
+    indexRecordNumber = 0;
+  }
+  closeFid();
+}
+
+Boolean MPEG2TransportStreamIndexFile
+::readIndexRecordValues(unsigned long indexRecordNum,
+			unsigned long& transportPacketNum, u_int8_t& offset,
+			u_int8_t& size, float& pcr, u_int8_t& recordType) {
+  if (!readIndexRecord(indexRecordNum)) return False;
+
+  transportPacketNum = tsPacketNumFromBuf();
+  offset = offsetFromBuf();
+  size = sizeFromBuf();
+  pcr = pcrFromBuf();
+  recordType = recordTypeFromBuf();
+  return True;
+}
+
+float MPEG2TransportStreamIndexFile::getPlayingDuration() {
+  if (fNumIndexRecords == 0 || !readOneIndexRecord(fNumIndexRecords-1)) return 0.0f;
+
+  return pcrFromBuf();
+}
+
+int MPEG2TransportStreamIndexFile::mpegVersion() {
+  if (fMPEGVersion != 0) return fMPEGVersion; // we already know it
+
+  // Read the first index record, and figure out the MPEG version from its type:
+  if (!readOneIndexRecord(0)) return 0; // unknown; perhaps the indecx file is empty?	
+
+  setMPEGVersionFromRecordType(recordTypeFromBuf());
+  return fMPEGVersion;
+}
+
+Boolean MPEG2TransportStreamIndexFile::openFid() {
+  if (fFid == NULL && fFileName != NULL) {
+    if ((fFid = OpenInputFile(envir(), fFileName)) != NULL) {
+      fCurrentIndexRecordNum = 0;
+    }
+  }
+
+  return fFid != NULL;
+}
+
+Boolean MPEG2TransportStreamIndexFile::seekToIndexRecord(unsigned long indexRecordNumber) {
+  if (!openFid()) return False;
+
+  if (indexRecordNumber == fCurrentIndexRecordNum) return True; // we're already there
+
+  if (SeekFile64(fFid, (int64_t)(indexRecordNumber*INDEX_RECORD_SIZE), SEEK_SET) != 0) return False;
+  fCurrentIndexRecordNum = indexRecordNumber;
+  return True;
+}
+
+Boolean MPEG2TransportStreamIndexFile::readIndexRecord(unsigned long indexRecordNum) {
+  do {
+    if (!seekToIndexRecord(indexRecordNum)) break;
+    if (fread(fBuf, INDEX_RECORD_SIZE, 1, fFid) != 1) break;
+    ++fCurrentIndexRecordNum;
+
+    return True;
+  } while (0);
+
+  return False; // an error occurred
+}
+
+Boolean MPEG2TransportStreamIndexFile::readOneIndexRecord(unsigned long indexRecordNum) {
+  Boolean result = readIndexRecord(indexRecordNum);
+  closeFid();
+
+  return result;
+}
+
+void MPEG2TransportStreamIndexFile::closeFid() {
+  if (fFid != NULL) {
+    CloseInputFile(fFid);
+    fFid = NULL;
+  }
+}
+
+float MPEG2TransportStreamIndexFile::pcrFromBuf() {
+  unsigned pcr_int = (fBuf[5]<<16) | (fBuf[4]<<8) | fBuf[3];
+  u_int8_t pcr_frac = fBuf[6];
+  return pcr_int + pcr_frac/256.0f;
+}
+
+unsigned long MPEG2TransportStreamIndexFile::tsPacketNumFromBuf() {
+  return (fBuf[10]<<24) | (fBuf[9]<<16) | (fBuf[8]<<8) | fBuf[7];
+}
+
+void MPEG2TransportStreamIndexFile::setMPEGVersionFromRecordType(u_int8_t recordType) {
+  if (fMPEGVersion != 0) return; // we already know it
+ 
+  u_int8_t const recordTypeWithoutStartBit = recordType&~0x80;
+  if (recordTypeWithoutStartBit >= 1 && recordTypeWithoutStartBit <= 4) fMPEGVersion = 2;
+  else if (recordTypeWithoutStartBit >= 5 && recordTypeWithoutStartBit <= 10) fMPEGVersion = 5;
+      // represents H.264
+  else if (recordTypeWithoutStartBit >= 11 && recordTypeWithoutStartBit <= 16) fMPEGVersion = 6;
+      // represents H.265
+}
+
+Boolean MPEG2TransportStreamIndexFile::rewindToCleanPoint(unsigned long&ixFound) {
+  Boolean success = False; // until we learn otherwise
+
+  while (ixFound > 0) {
+    if (!readIndexRecord(ixFound)) break;
+
+    u_int8_t recordType = recordTypeFromBuf();
+    setMPEGVersionFromRecordType(recordType);
+
+    // A 'clean point' is the start of a 'frame' from which a decoder can cleanly resume
+    // handling the stream.  For H.264, this is a SPS.  For H.265, this is a VPS.
+    // For MPEG-2, this is a Video Sequence Header, or a GOP. 
+
+    if ((recordType&0x80) != 0) { // This is the start of a 'frame'
+      recordType &=~ 0x80; // remove the 'start of frame' bit
+      if (fMPEGVersion == 5) { // H.264
+        if (recordType == 5/*SPS*/) {
+	  success = True;
+	  break;
+	}
+      } else if (fMPEGVersion == 6) { // H.265
+        if (recordType == 11/*VPS*/) {
+	  success = True;
+	  break;
+	}
+      } else { // MPEG-1, 2, or 4
+	if (recordType == 1/*VSH*/) {
+	  success = True;
+	  break;
+	} else if (recordType == 2/*GOP*/) {
+	  // Hack: If the preceding record is for a Video Sequence Header, then use it instead:
+	  unsigned long newIxFound = ixFound;
+
+	  while (--newIxFound > 0) {
+	    if (!readIndexRecord(newIxFound)) break;
+	    recordType = recordTypeFromBuf();
+	    if ((recordType&0x7F) != 1) break; // not a Video Sequence Header
+	    if ((recordType&0x80) != 0) { // this is the start of the VSH; use it
+	      ixFound = newIxFound;
+	      break;
+	    }
+	  }
+        }
+        success = True;
+        break;
+      }
+    }
+
+    // Keep checking, from the previous record:
+    --ixFound;
+  }
+  if (ixFound == 0) success = True; // use record 0 anyway
+
+  return success;
+}
diff --git a/liveMedia/MPEG2TransportStreamMultiplexor.cpp b/liveMedia/MPEG2TransportStreamMultiplexor.cpp
new file mode 100644
index 0000000..81d7997
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamMultiplexor.cpp
@@ -0,0 +1,484 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class for generating MPEG-2 Transport Stream from one or more input
+// Elementary Stream data sources
+// Implementation
+
+#include "MPEG2TransportStreamMultiplexor.hh"
+
+#define TRANSPORT_PACKET_SIZE 188
+
+#define PAT_PERIOD_IF_UNTIMED 100 // # of packets between Program Association Tables (if not timed)
+#define PMT_PERIOD_IF_UNTIMED 500 // # of packets between Program Map Tables (if not timed)
+
+void MPEG2TransportStreamMultiplexor
+::setTimedSegmentation(unsigned segmentationDuration,
+		       onEndOfSegmentFunc* onEndOfSegmentFunc,
+		       void* onEndOfSegmentClientData) {
+  fSegmentationDuration = segmentationDuration;
+  fOnEndOfSegmentFunc = onEndOfSegmentFunc;
+  fOnEndOfSegmentClientData = onEndOfSegmentClientData;
+}
+
+MPEG2TransportStreamMultiplexor
+::MPEG2TransportStreamMultiplexor(UsageEnvironment& env)
+  : FramedSource(env),
+    fHaveVideoStreams(True/*by default*/),
+    fOutgoingPacketCounter(0), fProgramMapVersion(0xFF),
+    fPreviousInputProgramMapVersion(0xFF), fCurrentInputProgramMapVersion(0),
+    fPCR_PID(0), fCurrentPID(0),
+    fInputBuffer(NULL), fInputBufferSize(0), fInputBufferBytesUsed(0),
+    fIsFirstAdaptationField(True), fSegmentationDuration(0), fSegmentationIndication(1),
+    fCurrentSegmentDuration(0.0), fPreviousPTS(0.0),
+    fOnEndOfSegmentFunc(NULL), fOnEndOfSegmentClientData(NULL) {
+  for (unsigned i = 0; i < PID_TABLE_SIZE; ++i) {
+    fPIDState[i].counter = 0;
+    fPIDState[i].streamType = 0;
+  }
+}
+
+MPEG2TransportStreamMultiplexor::~MPEG2TransportStreamMultiplexor() {
+}
+
+Boolean MPEG2TransportStreamMultiplexor::isMPEG2TransportStreamMultiplexor() const {
+  return True;
+}
+
+void MPEG2TransportStreamMultiplexor::doGetNextFrame() {
+  if (fInputBufferBytesUsed >= fInputBufferSize) {
+    // No more bytes are available from the current buffer.
+    // Arrange to read a new one.
+    awaitNewBuffer(fInputBuffer);
+    return;
+  }
+
+  do {
+    // Periodically return a Program Association Table packet instead:
+    if ((segmentationIsTimed() && fSegmentationIndication == 1)
+	|| (!segmentationIsTimed() && fOutgoingPacketCounter % PAT_PERIOD_IF_UNTIMED == 0)) {
+      ++fOutgoingPacketCounter;
+      deliverPATPacket();
+      fSegmentationIndication = 2; // for next time
+      break;
+    }
+    ++fOutgoingPacketCounter;
+
+    // Periodically (or when we see a new PID) return a Program Map Table instead:
+    Boolean programMapHasChanged = fCurrentInputProgramMapVersion != fPreviousInputProgramMapVersion;
+    if (programMapHasChanged
+	|| (segmentationIsTimed() && fSegmentationIndication == 2)
+	|| (!segmentationIsTimed() && fOutgoingPacketCounter % PMT_PERIOD_IF_UNTIMED == 0)) {
+      if (programMapHasChanged) { // reset values for next time:
+	fPreviousInputProgramMapVersion = fCurrentInputProgramMapVersion;
+      }
+      deliverPMTPacket(programMapHasChanged);
+      fSegmentationIndication = 0; // for next time
+      break;
+    }
+
+    // Normal case: Deliver (or continue delivering) the recently-read data:
+    deliverDataToClient(fCurrentPID, fInputBuffer, fInputBufferSize,
+			fInputBufferBytesUsed);
+  } while (0);
+
+  // NEED TO SET fPresentationTime, durationInMicroseconds #####
+  // Complete the delivery to the client:
+  if ((fOutgoingPacketCounter%10) == 0) {
+    // To avoid excessive recursion (and stack overflow) caused by excessively large input frames,
+    // occasionally return to the event loop to do this:
+    nextTask() = envir().taskScheduler().scheduleDelayedTask(0, (TaskFunc*)FramedSource::afterGetting, this);
+  } else {
+    afterGetting(this);
+  }
+}
+
+void MPEG2TransportStreamMultiplexor
+::handleNewBuffer(unsigned char* buffer, unsigned bufferSize,
+		  int mpegVersion, MPEG1or2Demux::SCR scr, int16_t PID) {
+  if (bufferSize < 4) return;
+  fInputBuffer = buffer;
+  fInputBufferSize = bufferSize;
+  fInputBufferBytesUsed = 0;
+
+  u_int8_t stream_id = fInputBuffer[3];
+  // Use "stream_id" directly as our PID.
+  // Also, figure out the Program Map 'stream type' from this.
+  if (stream_id == 0xBE) { // padding_stream; ignore
+    fInputBufferSize = 0;
+  } else if (stream_id == 0xBC) { // program_stream_map
+    setProgramStreamMap(fInputBufferSize);
+    fInputBufferSize = 0; // then, ignore the buffer
+  } else {
+    if (PID == -1)
+      fCurrentPID = stream_id;
+    else
+      fCurrentPID = PID;
+
+    // Set the stream's type:
+    u_int8_t& streamType = fPIDState[fCurrentPID].streamType; // alias
+
+    if (streamType == 0) {
+      // Instead, set the stream's type to default values, based on whether
+      // the stream is audio or video, and whether it's MPEG-1 or MPEG-2:
+      if ((stream_id&0xF0) == 0xE0) { // video
+	streamType = mpegVersion == 1 ? 1 : mpegVersion == 2 ? 2 : mpegVersion == 4 ? 0x10 :
+	  mpegVersion == 5/*H.264*/ ? 0x1B : 0x24/*assume H.265*/;
+      } else if ((stream_id&0xE0) == 0xC0) { // audio
+	streamType = mpegVersion == 1 ? 3 : mpegVersion == 2 ? 4 : mpegVersion == 3 ? 6 : 0xF;
+      } else if (stream_id == 0xBD) { // private_stream1 (usually AC-3 or Opus)
+	streamType = 0x06; // for DVB or Opus; for ATSC, use 0x81
+      } else { // something else
+	streamType = 0x81; // private
+      }
+    }
+
+    if (fPCR_PID == 0) { // set it to this stream, if it's appropriate:
+      if ((!fHaveVideoStreams && (streamType == 3 || streamType == 4 || streamType == 6 || streamType == 0xF))/* audio stream */ ||
+	  (streamType == 1 || streamType == 2 || streamType == 0x10 || streamType == 0x1B || streamType == 0x24)/* video stream */) {
+	fPCR_PID = fCurrentPID; // use this stream's SCR for PCR
+      }
+    }
+    if (fCurrentPID == fPCR_PID) {
+      // Record the input's current SCR timestamp, for use as our PCR:
+      fPCR = scr;
+    }
+  }
+
+  // Now that we have new input data, retry the last delivery to the client:
+  doGetNextFrame();
+}
+
+void MPEG2TransportStreamMultiplexor
+::deliverDataToClient(u_int16_t pid, unsigned char* buffer, unsigned bufferSize,
+		      unsigned& startPositionInBuffer) {
+  // Construct a new Transport packet, and deliver it to the client:
+  if (fMaxSize < TRANSPORT_PACKET_SIZE) {
+    fFrameSize = 0; // the client hasn't given us enough space; deliver nothing
+    fNumTruncatedBytes = TRANSPORT_PACKET_SIZE;
+  } else {
+    fFrameSize = TRANSPORT_PACKET_SIZE;
+    Boolean willAddPCR = pid == fPCR_PID && startPositionInBuffer == 0
+      && !(fPCR.highBit == 0 && fPCR.remainingBits == 0 && fPCR.extension == 0);
+    unsigned const numBytesAvailable = bufferSize - startPositionInBuffer;
+    unsigned numHeaderBytes = 4; // by default
+    unsigned numPCRBytes = 0; // by default
+    unsigned numPaddingBytes = 0; // by default
+    unsigned numDataBytes;
+    u_int8_t adaptation_field_control;
+    if (willAddPCR) {
+      adaptation_field_control = 0x30;
+      numHeaderBytes += 2; // for the "adaptation_field_length" and flags
+      numPCRBytes = 6;
+      if (numBytesAvailable >= TRANSPORT_PACKET_SIZE - numHeaderBytes - numPCRBytes) {
+	numDataBytes = TRANSPORT_PACKET_SIZE - numHeaderBytes - numPCRBytes;
+      } else {
+	numDataBytes = numBytesAvailable;
+	numPaddingBytes
+	  = TRANSPORT_PACKET_SIZE - numHeaderBytes - numPCRBytes - numDataBytes;
+      }
+    } else if (numBytesAvailable >= TRANSPORT_PACKET_SIZE - numHeaderBytes) {
+      // This is the common case
+      adaptation_field_control = 0x10;
+      numDataBytes = TRANSPORT_PACKET_SIZE - numHeaderBytes;
+    } else {
+      adaptation_field_control = 0x30;
+      ++numHeaderBytes; // for the "adaptation_field_length"
+      // ASSERT: numBytesAvailable <= TRANSPORT_PACKET_SIZE - numHeaderBytes
+      numDataBytes = numBytesAvailable;
+      if (numDataBytes < TRANSPORT_PACKET_SIZE - numHeaderBytes) {
+	++numHeaderBytes; // for the adaptation field flags
+	numPaddingBytes = TRANSPORT_PACKET_SIZE - numHeaderBytes - numDataBytes;
+      }
+    }
+    // ASSERT: numHeaderBytes+numPCRBytes+numPaddingBytes+numDataBytes
+    //         == TRANSPORT_PACKET_SIZE
+
+    // Fill in the header of the Transport Stream packet:
+    unsigned char* header = fTo;
+    *header++ = 0x47; // sync_byte
+    *header++ = ((startPositionInBuffer == 0) ? 0x40 : 0x00)|(pid>>8);
+      // transport_error_indicator, payload_unit_start_indicator, transport_priority,
+      // first 5 bits of PID
+    *header++ = pid;
+      // last 8 bits of PID
+    unsigned& continuity_counter = fPIDState[pid].counter; // alias
+    *header++ = adaptation_field_control|(continuity_counter&0x0F);
+      // transport_scrambling_control, adaptation_field_control, continuity_counter
+    ++continuity_counter;
+    if (adaptation_field_control == 0x30) {
+      // Add an adaptation field:
+      u_int8_t adaptation_field_length
+	= (numHeaderBytes == 5) ? 0 : 1 + numPCRBytes + numPaddingBytes;
+      *header++ = adaptation_field_length;
+      if (numHeaderBytes > 5) {
+	u_int8_t flags = willAddPCR ? 0x10 : 0x00;
+	if (fIsFirstAdaptationField) {
+	  flags |= 0x80; // discontinuity_indicator
+	  fIsFirstAdaptationField = False;
+	}
+	*header++ = flags;
+	if (willAddPCR) {
+	  u_int32_t pcrHigh32Bits = (fPCR.highBit<<31) | (fPCR.remainingBits>>1);
+	  u_int8_t pcrLowBit = fPCR.remainingBits&1;
+	  u_int8_t extHighBit = (fPCR.extension&0x100)>>8;
+	  *header++ = pcrHigh32Bits>>24;
+	  *header++ = pcrHigh32Bits>>16;
+	  *header++ = pcrHigh32Bits>>8;
+	  *header++ = pcrHigh32Bits;
+	  *header++ = (pcrLowBit<<7)|0x7E|extHighBit;
+	  *header++ = (u_int8_t)fPCR.extension; // low 8 bits of extension
+
+	  if (fSegmentationDuration > 0) {
+	    // Use the PCR to compute the duration of the segment so far, to check whether
+	    // segmentation needs to occur now:
+	    double pts = fPCR.highBit ? 0x80000000/45000.0 : 0.0;
+	    pts += fPCR.remainingBits/90000.0;
+	    pts += fPCR.extension/27000000.0;
+
+	    double lastSubSegmentDuration = fPreviousPTS == 0.0 ? 0.0 : pts - fPreviousPTS;
+	    fCurrentSegmentDuration += lastSubSegmentDuration;
+
+	    // Check whether we need to segment the stream now:
+	    if (fCurrentSegmentDuration > (double)fSegmentationDuration
+		|| fCurrentSegmentDuration + lastSubSegmentDuration > (double)fSegmentationDuration) {
+	      // It's time to segment the stream.
+	      if (fOnEndOfSegmentFunc != NULL) {
+		(*fOnEndOfSegmentFunc)(fOnEndOfSegmentClientData, fCurrentSegmentDuration);
+	      }
+
+	      fCurrentSegmentDuration = 0.0; // for next time
+	      fSegmentationIndication = 1; // output a PAT next
+	    }
+
+	    fPreviousPTS = pts; // for next time
+	  }
+	}
+      }
+    }
+
+    // Add any padding bytes:
+    for (unsigned i = 0; i < numPaddingBytes; ++i) *header++ = 0xFF;
+
+    // Finally, add the data bytes:
+    memmove(header, &buffer[startPositionInBuffer], numDataBytes);
+    startPositionInBuffer += numDataBytes;
+  }
+}
+
+#define PAT_PID 0
+#ifndef OUR_PROGRAM_NUMBER
+#define OUR_PROGRAM_NUMBER 1
+#endif
+#define OUR_PROGRAM_MAP_PID 0x1000
+
+void MPEG2TransportStreamMultiplexor::deliverPATPacket() {
+  // First, create a new buffer for the PAT packet:
+  unsigned const patSize = TRANSPORT_PACKET_SIZE - 4; // allow for the 4-byte header
+  unsigned char* patBuffer = new unsigned char[patSize];
+
+  // and fill it in:
+  unsigned char* pat = patBuffer;
+  *pat++ = 0; // pointer_field
+  *pat++ = 0; // table_id
+  *pat++ = 0xB0; // section_syntax_indicator; 0; reserved, section_length (high)
+  *pat++ = 13; // section_length (low)
+  *pat++ = 0; *pat++ = 1; // transport_stream_id
+  *pat++ = 0xC1; // reserved; version_number; current_next_indicator
+  *pat++ = 0; // section_number
+  *pat++ = 0; // last_section_number
+  *pat++ = OUR_PROGRAM_NUMBER>>8; *pat++ = OUR_PROGRAM_NUMBER; // program_number
+  *pat++ = 0xE0|(OUR_PROGRAM_MAP_PID>>8); // reserved; program_map_PID (high)
+  *pat++ = OUR_PROGRAM_MAP_PID&0xFF; // program_map_PID (low)
+
+  // Compute the CRC from the bytes we currently have (not including "pointer_field"):
+  u_int32_t crc = calculateCRC(patBuffer+1, pat - (patBuffer+1));
+  *pat++ = crc>>24; *pat++ = crc>>16; *pat++ = crc>>8; *pat++ = crc;
+
+  // Fill in the rest of the packet with padding bytes:
+  while (pat < &patBuffer[patSize]) *pat++ = 0xFF;
+
+  // Deliver the packet:
+  unsigned startPosition = 0;
+  deliverDataToClient(PAT_PID, patBuffer, patSize, startPosition);
+
+  // Finally, remove the new buffer:
+  delete[] patBuffer;
+}
+
+void MPEG2TransportStreamMultiplexor::deliverPMTPacket(Boolean hasChanged) {
+  if (hasChanged) ++fProgramMapVersion;
+
+  // First, create a new buffer for the PMT packet:
+  unsigned const pmtSize = TRANSPORT_PACKET_SIZE - 4; // allow for the 4-byte header
+  unsigned char* pmtBuffer = new unsigned char[pmtSize];
+
+  // and fill it in:
+  unsigned char* pmt = pmtBuffer;
+  *pmt++ = 0; // pointer_field
+  *pmt++ = 2; // table_id
+  *pmt++ = 0xB0; // section_syntax_indicator; 0; reserved, section_length (high)
+  unsigned char* section_lengthPtr = pmt; // save for later
+  *pmt++ = 0; // section_length (low) (fill in later)
+  *pmt++ = OUR_PROGRAM_NUMBER>>8; *pmt++ = OUR_PROGRAM_NUMBER; // program_number
+  *pmt++ = 0xC1|((fProgramMapVersion&0x1F)<<1); // reserved; version_number; current_next_indicator
+  *pmt++ = 0; // section_number
+  *pmt++ = 0; // last_section_number
+  *pmt++ = 0xE0|(fPCR_PID>>8); // reserved; PCR_PID (high)
+  *pmt++ = fPCR_PID; // PCR_PID (low)
+  *pmt++ = 0xF0; // reserved; program_info_length (high)
+  *pmt++ = 0; // program_info_length (low)
+  for (int pid = 0; pid < PID_TABLE_SIZE; ++pid) {
+    if (fPIDState[pid].streamType != 0) {
+      // This PID gets recorded in the table
+      *pmt++ = fPIDState[pid].streamType;
+      *pmt++ = 0xE0|(pid>>8); // reserved; elementary_pid (high)
+      *pmt++ = pid; // elementary_pid (low)
+      *pmt++ = 0xF0; // reserved; ES_info_length (high)
+      *pmt++ = 0; // ES_info_length (low)
+    }
+  }
+  unsigned section_length = pmt - (section_lengthPtr+1) + 4 /*for CRC*/;
+  *section_lengthPtr = section_length;
+
+  // Compute the CRC from the bytes we currently have (not including "pointer_field"):
+  u_int32_t crc = calculateCRC(pmtBuffer+1, pmt - (pmtBuffer+1));
+  *pmt++ = crc>>24; *pmt++ = crc>>16; *pmt++ = crc>>8; *pmt++ = crc;
+
+  // Fill in the rest of the packet with padding bytes:
+  while (pmt < &pmtBuffer[pmtSize]) *pmt++ = 0xFF;
+
+  // Deliver the packet:
+  unsigned startPosition = 0;
+  deliverDataToClient(OUR_PROGRAM_MAP_PID, pmtBuffer, pmtSize, startPosition);
+
+  // Finally, remove the new buffer:
+  delete[] pmtBuffer;
+}
+
+void MPEG2TransportStreamMultiplexor::setProgramStreamMap(unsigned frameSize) {
+  if (frameSize <= 16) return; // program_stream_map is too small to be useful
+  if (frameSize > 0xFF) return; // program_stream_map is too large
+
+  u_int16_t program_stream_map_length = (fInputBuffer[4]<<8) | fInputBuffer[5];
+  if ((u_int16_t)frameSize > 6+program_stream_map_length) {
+    frameSize = 6+program_stream_map_length;
+  }
+
+  u_int8_t versionByte = fInputBuffer[6];
+  if ((versionByte&0x80) == 0) return; // "current_next_indicator" is not set
+  fCurrentInputProgramMapVersion = versionByte&0x1F;
+
+  u_int16_t program_stream_info_length = (fInputBuffer[8]<<8) | fInputBuffer[9];
+  unsigned offset = 10 + program_stream_info_length; // skip over 'descriptors'
+
+  u_int16_t elementary_stream_map_length
+    = (fInputBuffer[offset]<<8) | fInputBuffer[offset+1];
+  offset += 2;
+  frameSize -= 4; // sizeof CRC_32
+  if (frameSize > offset + elementary_stream_map_length) {
+    frameSize = offset + elementary_stream_map_length;
+  }
+
+  while (offset + 4 <= frameSize) {
+    u_int8_t stream_type = fInputBuffer[offset];
+    u_int8_t elementary_stream_id = fInputBuffer[offset+1];
+
+    fPIDState[elementary_stream_id].streamType = stream_type;
+
+    u_int16_t elementary_stream_info_length
+      = (fInputBuffer[offset+2]<<8) | fInputBuffer[offset+3];
+    offset += 4 + elementary_stream_info_length;
+  }
+}
+
+static u_int32_t const CRC32[256] = {
+  0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9,
+  0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005,
+  0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
+  0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,
+  0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9,
+  0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
+  0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011,
+  0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd,
+  0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
+  0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5,
+  0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81,
+  0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
+  0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49,
+  0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,
+  0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
+  0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d,
+  0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae,
+  0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
+  0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16,
+  0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca,
+  0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
+  0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02,
+  0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066,
+  0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
+  0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e,
+  0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692,
+  0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
+  0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a,
+  0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e,
+  0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
+  0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686,
+  0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a,
+  0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
+  0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,
+  0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f,
+  0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
+  0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47,
+  0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b,
+  0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
+  0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623,
+  0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7,
+  0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
+  0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f,
+  0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,
+  0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
+  0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b,
+  0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f,
+  0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
+  0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640,
+  0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c,
+  0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
+  0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24,
+  0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30,
+  0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
+  0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088,
+  0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654,
+  0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
+  0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c,
+  0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18,
+  0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
+  0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0,
+  0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c,
+  0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
+  0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
+};
+
+u_int32_t calculateCRC(u_int8_t const* data, unsigned dataLength, u_int32_t initialValue) {
+  u_int32_t crc = initialValue;
+
+  while (dataLength-- > 0) {
+    crc = (crc<<8) ^ CRC32[(crc>>24) ^ (u_int32_t)(*data++)];
+  }
+
+  return crc;
+}
diff --git a/liveMedia/MPEG2TransportStreamParser.cpp b/liveMedia/MPEG2TransportStreamParser.cpp
new file mode 100644
index 0000000..76d2220
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamParser.cpp
@@ -0,0 +1,328 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A parser for a MPEG Transport Stream
+// Implementation
+
+#include "MPEG2TransportStreamParser.hh"
+
+#define NUM_PIDS 0x10000
+
+StreamType StreamTypes[0x100];
+
+MPEG2TransportStreamParser
+::MPEG2TransportStreamParser(FramedSource* inputSource,
+			     FramedSource::onCloseFunc* onEndFunc, void* onEndClientData)
+  : StreamParser(inputSource, onEndFunc, onEndClientData, continueParsing, this),
+    fInputSource(inputSource), fAmCurrentlyParsing(False),
+    fOnEndFunc(onEndFunc), fOnEndClientData(onEndClientData),
+    fLastSeenPCR(0.0) {
+  if (StreamTypes[0x01].dataType == StreamType::UNKNOWN) { // initialize array with known values
+    StreamTypes[0x01] = StreamType("MPEG-1 video", StreamType::VIDEO, ".mpv");
+    StreamTypes[0x02] = StreamType("MPEG-2 video", StreamType::VIDEO, ".mpv");
+    StreamTypes[0x03] = StreamType("MPEG-1 audio", StreamType::AUDIO, ".mpa");
+    StreamTypes[0x04] = StreamType("MPEG-2 audio", StreamType::AUDIO, ".mpa");
+    StreamTypes[0x05] = StreamType("privately-defined data", StreamType::DATA);
+    StreamTypes[0x06] = StreamType("privately-defined data", StreamType::DATA);
+    StreamTypes[0x0F] = StreamType("AAC audio", StreamType::AUDIO, ".aac");
+    StreamTypes[0x10] = StreamType("MPEG-4 H.263 based video", StreamType::VIDEO, ".mpv");
+    StreamTypes[0x1B] = StreamType("H.264 video", StreamType::VIDEO, ".h264");
+    StreamTypes[0x1C] = StreamType("MPEG-4 raw audio", StreamType::AUDIO, ".mpa");
+    StreamTypes[0x1D] = StreamType("MPEG-4 text", StreamType::TEXT, ".txt");
+    StreamTypes[0x21] = StreamType("JPEG 2000 video", StreamType::VIDEO, ".mjpg");
+    StreamTypes[0x24] = StreamType("H.265 video", StreamType::VIDEO, ".h265");
+    StreamTypes[0x81] = StreamType("AC-3 audio", StreamType::AUDIO, ".ac3");
+  }
+
+  // Create our 'PID state' array:
+  fPIDState = new PIDState*[NUM_PIDS];
+  for (unsigned i = 0; i < NUM_PIDS; ++i) fPIDState[i] = NULL;
+
+  // Initially, the only PID we know is 0x0000: a Program Association Table:
+  fPIDState[0x0000] = new PIDState_PAT(*this, 0x0000);
+
+  // Begin parsing:
+  continueParsing();
+}
+
+MPEG2TransportStreamParser::~MPEG2TransportStreamParser() {
+  for (unsigned i = 0; i < NUM_PIDS; ++i) delete fPIDState[i];
+  delete[] fPIDState;
+}
+
+UsageEnvironment& MPEG2TransportStreamParser::envir() {
+  return fInputSource->envir();
+}
+
+void MPEG2TransportStreamParser
+::continueParsing(void* clientData, unsigned char* ptr, unsigned size, struct timeval presentationTime) {
+  ((MPEG2TransportStreamParser*)clientData)->continueParsing();
+}
+
+void MPEG2TransportStreamParser::continueParsing() {
+  if (fAmCurrentlyParsing) return; // don't allow recursive calls to parse()
+  
+  if (fInputSource != NULL) {
+    fAmCurrentlyParsing = True;
+    Boolean parseSucceeded = parse();
+    fAmCurrentlyParsing = False;
+
+    if (!parseSucceeded) {
+      // We didn't complete the parsing, because we had to read more data from the source,
+      // or because we're waiting for another read from downstream.
+      // Once that happens, we'll get called again.
+      return;
+    }
+  }
+
+  // We successfully parsed the file.  Call our 'done' function now:
+  if (fOnEndFunc != NULL) (*fOnEndFunc)(fOnEndClientData);
+}
+
+#define TRANSPORT_SYNC_BYTE 0x47
+#define TRANSPORT_PACKET_SIZE 188
+
+Boolean MPEG2TransportStreamParser::parse() {
+  if (fInputSource->isCurrentlyAwaitingData()) return False;
+      // Our input source is currently being read. Wait until that read completes
+
+  try {
+    while (1) {
+      // Make sure we start with a 'sync byte':
+      do {
+	saveParserState();
+      } while (get1Byte() != TRANSPORT_SYNC_BYTE);
+
+      // Parse and process each (remaining 187 bytes of a) 'Transport Stream Packet' at a time.
+      // (Because these are a lot smaller than the "StreamParser" BANK_SIZE, we don't save
+      //  parser state in the middle of processing each such 'Transport Stream Packet'.
+      //  Therefore, processing of each 'Transport Stream Packet' needs to be idempotent.)
+
+      u_int16_t flagsPlusPID = get2Bytes();
+      // Check the "transport_error_indicator" flag; reject the packet if it's set:
+      if ((flagsPlusPID&0x8000) != 0) {
+#ifdef DEBUG_ERRORS
+	fprintf(stderr, "MPEG2TransportStreamParser::parse() Rejected packet with \"transport_error_indicator\" flag set!\n");
+#endif
+	continue;
+      }
+      Boolean pusi = (flagsPlusPID&0x4000) != 0; // payload_unit_start_indicator
+      // Ignore "transport_priority"
+      u_int16_t PID = flagsPlusPID&0x1FFF;
+#ifdef DEBUG_CONTENTS
+      fprintf(stderr, "\nTransport Packet: payload_unit_start_indicator: %d; PID: 0x%04x\n",
+	      pusi, PID);
+#endif
+
+      u_int8_t controlPlusContinuity_counter = get1Byte();
+      // Reject any packets where the "transport_scrambling_control" field is not zero:
+      if ((controlPlusContinuity_counter&0xC0) != 0) {
+#ifdef DEBUG_ERRORS
+	fprintf(stderr, "MPEG2TransportStreamParser::parse() Rejected packet with \"transport_scrambling_control\" set to non-zero value %d!\n", (controlPlusContinuity_counter&0xC0)>>6);
+#endif
+	continue;
+      }
+      u_int8_t adaptation_field_control = (controlPlusContinuity_counter&0x30)>>4; // 2 bits
+#ifdef DEBUG_CONTENTS
+      u_int8_t continuity_counter = (controlPlusContinuity_counter&0x0F); // 4 bits
+      fprintf(stderr, "adaptation_field_control: %d; continuity_counter: 0x%X\n", adaptation_field_control, continuity_counter);
+#endif
+
+      u_int8_t totalAdaptationFieldSize = adaptation_field_control < 2 ? 0 : parseAdaptationField();
+#ifdef DEBUG_ERRORS
+      if (adaptation_field_control == 2 && totalAdaptationFieldSize != 1+183) {
+	fprintf(stderr, "MPEG2TransportStreamParser::parse() Warning: Got an inconsistent \"totalAdaptationFieldSize\" %d for adaptation_field_control == 2\n", totalAdaptationFieldSize);
+      }
+#endif
+
+      int numDataBytes = TRANSPORT_PACKET_SIZE-4-totalAdaptationFieldSize;
+      if (numDataBytes > 0) {
+#ifdef DEBUG_CONTENTS
+	fprintf(stderr, "+%d data bytes:\n", numDataBytes);
+#endif
+	if (!processDataBytes(PID, pusi, numDataBytes)) {
+	  // The parsing got deferred (to be resumed later when a pending read happens)
+	  restoreSavedParserState(); // so that we later resume parsing at the start of the packet
+	  return False;
+	}
+      }
+    }
+  } catch (int /*e*/) {
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "MPEG2TransportStreamParser::parse() EXCEPTION (This is normal behavior - *not* an error)\n");
+#endif
+    return False; // the parsing got interrupted
+  }
+}
+
+u_int8_t MPEG2TransportStreamParser::parseAdaptationField() {
+  unsigned startPos = curOffset();
+#ifdef DEBUG_CONTENTS
+  fprintf(stderr, "\tAdaptation Field:\n");
+#endif
+  u_int8_t adaptation_field_length = get1Byte();
+#ifdef DEBUG_CONTENTS
+  fprintf(stderr, "\t\tadaptation_field_length: %d\n", adaptation_field_length);
+#endif
+  if (adaptation_field_length > 0) {
+    u_int8_t flags = get1Byte();
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "\t\tadaptation field flags: 0x%02x\n", flags);
+#endif
+    if ((flags&0x10) != 0) { // PCR_flag
+      u_int32_t first32PCRBits = get4Bytes();
+      u_int16_t last16PCRBits = get2Bytes();
+      // program_clock_reference_base = "first32PCRBits" and high bit of "last16PCRBits" (33 bits)
+      // program_clock_reference_extension = last 9 bits of "last16PCRBits" (9 bits)
+      double PCR = first32PCRBits/45000.0;
+      if ((last16PCRBits&0x8000) != 0) PCR += 1/90000.0; // add in low-bit (if set)
+      PCR += (last16PCRBits&0x01FF)/27000000.0; // add in extension
+#ifdef DEBUG_CONTENTS
+      fprintf(stderr, "\t\tPCR: %.10f\n", PCR);
+#endif
+    }
+    if ((flags&0x08) != 0) { // OPCR_flag
+      u_int32_t first32OPCRBits = get4Bytes();
+      u_int16_t last16OPCRBits = get2Bytes();
+      // original_program_clock_reference_base = "first32OPCRBits" and high bit of "last16OPCRBits" (33 bits)
+      // original_program_clock_reference_extension = last 9 bits of "last16OPCRBits" (9 bits)
+      double OPCR = first32OPCRBits/45000.0;
+      if ((last16OPCRBits&0x8000) != 0) OPCR += 1/90000.0; // add in low-bit (if set)
+      OPCR += (last16OPCRBits&0x01FF)/27000000.0; // add in extension
+#ifdef DEBUG_CONTENTS
+      fprintf(stderr, "\t\tOPCR: %.10f\n", OPCR);
+#endif
+    }
+    if ((flags&0x04) != 0) { // splicing_point_flag
+      skipBytes(1); // splice_countdown
+    }
+    if ((flags&0x02) != 0) { // transport_private_data_flag
+      u_int8_t transport_private_data_length = get1Byte();
+#ifdef DEBUG_CONTENTS
+      fprintf(stderr, "\t\ttransport_private_data_length: %d\n", transport_private_data_length);
+#endif
+      skipBytes(transport_private_data_length); // "private_data_byte"s
+    }
+    if ((flags&0x01) != 0) { // adaptation_field_extension_flag
+#ifdef DEBUG_CONTENTS
+      u_int8_t adaptation_field_extension_length = get1Byte();
+      fprintf(stderr, "\t\tadaptation_field_extension_length: %d\n", adaptation_field_extension_length);
+#else
+      skipBytes(1); // adaptation_field_extension_length
+#endif
+      u_int8_t flagsPlusReserved = get1Byte();
+#ifdef DEBUG_CONTENTS
+      fprintf(stderr, "\t\t\tflagsPlusReserved: 0x%02x\n", flagsPlusReserved);
+#endif
+      if ((flagsPlusReserved&0x80) != 0) { // ltw_flag
+	skipBytes(2); // "ltw_valid_flag" + "ltw_offset"
+      }
+      if ((flagsPlusReserved&0x40) != 0) { // piecewise_rate_flag
+	skipBytes(3); // reserved + "piecewise_rate"
+      }
+      if ((flagsPlusReserved&0x20) != 0) { // seamless_splice_flag
+	skipBytes(5); // DTS_next_...
+      }
+      // Skip reserved bytes to the end of the adaptation_field:
+      int numBytesLeft = (1 + adaptation_field_length) - (curOffset() - startPos);
+      if (numBytesLeft > 0) {
+#ifdef DEBUG_CONTENTS
+	fprintf(stderr, "\t\t+%d reserved bytes\n", numBytesLeft);
+#endif
+	skipBytes(numBytesLeft);
+      }
+    }
+    // Skip "stuffing_byte"s to the end of the adaptation_field:
+    int numBytesLeft = (1 + adaptation_field_length) - (curOffset() - startPos);
+    if (numBytesLeft > 0) {
+#ifdef DEBUG_CONTENTS
+	fprintf(stderr, "\t\t+%d stuffing bytes\n", numBytesLeft);
+#endif
+#ifdef DEBUG_ERRORS
+      for (int i = 0; i < numBytesLeft; ++i) {
+	if (get1Byte() != 0xFF) {
+	  fprintf(stderr, "WARNING: non-stuffing byte in adaptation_field\n");
+	}
+      }
+#else
+      skipBytes(numBytesLeft);
+#endif
+    }
+  }
+
+  // Finally, figure out how many bytes we parsed, and compare it to what we expected:
+  unsigned totalAdaptationFieldSize = curOffset() - startPos;
+#ifdef DEBUG_ERRORS
+  if (totalAdaptationFieldSize != 1 + adaptation_field_length) {
+    fprintf(stderr, "MPEG2TransportStreamParser::parseAdaptationField() Warning: Got an inconsistent \"totalAdaptationFieldSize\" %d; expected %d\n", totalAdaptationFieldSize, 1 + adaptation_field_length);
+  }  
+#endif
+  return totalAdaptationFieldSize;
+}
+
+Boolean MPEG2TransportStreamParser
+::processDataBytes(u_int16_t PID, Boolean pusi, unsigned numDataBytes) {
+  PIDState* pidState = fPIDState[PID];
+
+  if (pidState == NULL) { // unknown PID
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "\tUnknown PID\n");
+#endif
+    skipBytes(numDataBytes);
+    return True;
+  }
+
+  switch (pidState->type) {
+    case PAT: {
+      parsePAT(pusi, numDataBytes);
+      return True;
+    }
+    case PMT: {
+      parsePMT((PIDState_PMT*)pidState, pusi, numDataBytes);
+      return True;
+    }
+    case STREAM: {
+      return processStreamPacket((PIDState_STREAM*)pidState, pusi, numDataBytes);
+    }
+    default: { // Never reached, but eliminates a possible error with dumb compilers
+      return False;
+    }
+  }  
+}
+
+void MPEG2TransportStreamParser::restoreSavedParserState() {
+  StreamParser::restoreSavedParserState();
+  fAmCurrentlyParsing = False;  
+}
+
+
+//########## PIDState implementation ##########
+
+PIDState::PIDState(MPEG2TransportStreamParser& parser, u_int16_t pid, PIDType pidType)
+  : ourParser(parser), PID(pid), type(pidType) {
+}
+
+PIDState::~PIDState() {
+}
+
+
+//######### StreamType implementation ########
+
+StreamType
+::StreamType(char const* description, enum dataType dataType, char const* filenameSuffix)
+  : description(description), dataType(dataType), filenameSuffix(filenameSuffix) {
+}
diff --git a/liveMedia/MPEG2TransportStreamParser.hh b/liveMedia/MPEG2TransportStreamParser.hh
new file mode 100644
index 0000000..307f348
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamParser.hh
@@ -0,0 +1,132 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A parser for a MPEG Transport Stream
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_PARSER_HH
+
+#ifndef _STREAM_PARSER_HH
+#include "StreamParser.hh"
+#endif
+#ifndef _MPEG2_TRANSPORT_STREAM_DEMUXED_TRACK_HH
+#include "MPEG2TransportStreamDemuxedTrack.hh"
+#endif
+#ifndef _MEDIA_SINK_HH
+#include "MediaSink.hh"
+#endif
+
+// A descriptor that describes the state of each known PID:
+enum PIDType { PAT, PMT, STREAM };
+
+class PIDState {
+protected: // we're a virtual base class
+  PIDState(MPEG2TransportStreamParser& parser, u_int16_t pid, PIDType pidType);
+public:
+  virtual ~PIDState();
+
+public:
+  MPEG2TransportStreamParser& ourParser;
+  u_int16_t PID;
+  PIDType type;
+};
+
+class PIDState_PAT : public PIDState {
+public:
+  PIDState_PAT(MPEG2TransportStreamParser& parser, u_int16_t pid);
+protected:
+  virtual ~PIDState_PAT();
+};
+
+class PIDState_PMT : public PIDState {
+public:
+  PIDState_PMT(MPEG2TransportStreamParser& parser, u_int16_t pid, u_int16_t programNumber);
+protected:
+  virtual ~PIDState_PMT();
+
+public:
+  u_int16_t program_number;
+};
+
+class PIDState_STREAM : public PIDState {
+public:
+  PIDState_STREAM(MPEG2TransportStreamParser& parser, u_int16_t pid, u_int16_t programNumber, u_int8_t streamType);
+protected:
+  virtual ~PIDState_STREAM();
+
+public:
+  u_int16_t program_number;
+  u_int8_t stream_type;
+  double lastSeenPTS;
+  MPEG2TransportStreamDemuxedTrack* streamSource;
+  MediaSink* streamSink;
+};
+
+
+// Descriptions of known "stream_type"s:
+class StreamType {
+public:
+  char const* description;
+  enum dataType { AUDIO, VIDEO, DATA, TEXT, UNKNOWN } dataType;
+  char const* filenameSuffix;
+
+public:
+  StreamType(char const* description = "unknown", enum dataType dataType = UNKNOWN,
+	     char const* filenameSuffix = "");
+};
+
+
+class MPEG2TransportStreamParser: public StreamParser {
+public:
+  MPEG2TransportStreamParser(FramedSource* inputSource,
+			     FramedSource::onCloseFunc* onEndFunc, void* onEndClientData);
+  virtual ~MPEG2TransportStreamParser();
+
+  UsageEnvironment& envir();
+
+  // StreamParser 'client continue' function:
+  static void continueParsing(void* clientData, unsigned char* ptr, unsigned size, struct timeval presentationTime);
+  void continueParsing();
+
+private:
+  // Parsing functions:
+  friend class MPEG2TransportStreamDemuxedTrack;
+  Boolean parse(); // returns True iff we have finished parsing all BOS pages (on initialization)
+
+  u_int8_t parseAdaptationField();
+  Boolean processDataBytes(u_int16_t PID, Boolean pusi, unsigned numDataBytes);
+
+  void parsePAT(Boolean pusi, unsigned numDataBytes);
+  void parsePMT(PIDState_PMT* pidState, Boolean pusi, unsigned numDataBytes);
+  void parseStreamDescriptors(unsigned numDescriptorBytes);
+  Boolean processStreamPacket(PIDState_STREAM* pidState, Boolean pusi, unsigned numDataBytes);
+  unsigned parsePESHeader(PIDState_STREAM* pidState, unsigned numDataBytes);
+
+private: // redefined virtual functions
+  virtual void restoreSavedParserState();
+
+private:
+  // General state for parsing:
+  FramedSource* fInputSource;
+  Boolean fAmCurrentlyParsing;
+  FramedSource::onCloseFunc* fOnEndFunc;
+  void* fOnEndClientData;
+  PIDState** fPIDState;
+  double fLastSeenPCR;
+};
+
+#endif
diff --git a/liveMedia/MPEG2TransportStreamParser_PAT.cpp b/liveMedia/MPEG2TransportStreamParser_PAT.cpp
new file mode 100644
index 0000000..3fd0862
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamParser_PAT.cpp
@@ -0,0 +1,111 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A parser for a MPEG Transport Stream
+// Implementation
+
+#include "MPEG2TransportStreamParser.hh"
+
+void MPEG2TransportStreamParser::parsePAT(Boolean pusi, unsigned numDataBytes) {
+#ifdef DEBUG_CONTENTS
+  fprintf(stderr, "\tProgram Association Table\n");
+#endif 
+  unsigned startPos = curOffset();
+
+  do {
+    if (pusi) {
+      u_int8_t pointer_field = get1Byte();
+      skipBytes(pointer_field); // usually 0
+    }
+
+    u_int8_t table_id = get1Byte();
+    if (table_id != 0x00) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG2TransportStreamParser::parsePAT(%d, %d): bad table_id: 0x%02x\n",
+	      pusi, numDataBytes, table_id);
+#endif
+      break;
+    }
+
+    u_int16_t flagsPlusSection_length = get2Bytes();
+    u_int16_t section_length = flagsPlusSection_length&0x0FFF;
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "\t\tsection_length: %d\n", section_length);
+#endif
+    if (section_length < 9/*too small for remaining fields + CRC*/ ||
+	section_length > 1021/*as per specification*/) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG2TransportStreamParser::parsePAT(%d, %d): Bad section_length: %d\n",
+	      pusi, numDataBytes, section_length);
+#endif
+      break;
+    }
+
+    unsigned endPos = curOffset() + section_length;
+    if (endPos - startPos > numDataBytes) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG2TransportStreamParser::parsePAT(%d, %d): section_length %d gives us a total size %d that's too large!\n",
+	      pusi, numDataBytes, section_length, endPos - startPos);
+#endif
+      break;
+    }
+
+#ifdef DEBUG_CONTENTS
+    u_int16_t transport_stream_id = get2Bytes();
+    fprintf(stderr, "\t\ttransport_stream_id: 0x%04x\n", transport_stream_id);
+    u_int8_t version_number_byte = get1Byte();
+    u_int8_t version_number = (version_number_byte&0x1E)>>1;
+    u_int8_t section_number = get1Byte();
+    u_int8_t last_section_number = get1Byte();
+    fprintf(stderr, "\t\tversion_number: %d; section_number: %d; last_section_number: %d\n",
+	    version_number, section_number, last_section_number);
+#else
+    skipBytes(5);
+#endif
+
+    while (curOffset() <= endPos - 4/*for CRC*/ - 4/*for a program_number+PID*/) {
+      u_int16_t program_number = get2Bytes();
+      u_int16_t pid = get2Bytes()&0x1FFF;
+
+#ifdef DEBUG_CONTENTS
+      fprintf(stderr, "\t\tprogram_number: %d; PID: 0x%04x\n", program_number, pid);
+#endif
+      if (program_number != 0x0000) {
+	if (fPIDState[pid] == NULL) fPIDState[pid] = new PIDState_PMT(*this, pid, program_number);
+      }
+    }
+  } while (0);
+
+  // Skip (ignore) all remaining bytes in this packet (including the CRC):
+  int numBytesLeft = numDataBytes - (curOffset() - startPos);
+  if (numBytesLeft > 0) {
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "\t\t+%d CRC and stuffing bytes\n", numBytesLeft);
+#endif
+    skipBytes(numBytesLeft);
+  }
+}
+
+
+//########## PIDState_PAT implementation ##########
+
+PIDState_PAT::PIDState_PAT(MPEG2TransportStreamParser& parser, u_int16_t pid)
+  : PIDState(parser, pid, PAT) {
+}
+
+PIDState_PAT::~PIDState_PAT() {
+}
diff --git a/liveMedia/MPEG2TransportStreamParser_PMT.cpp b/liveMedia/MPEG2TransportStreamParser_PMT.cpp
new file mode 100644
index 0000000..cdbe0f5
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamParser_PMT.cpp
@@ -0,0 +1,471 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A parser for a MPEG Transport Stream
+// Implementation
+
+#include "MPEG2TransportStreamParser.hh"
+
+void MPEG2TransportStreamParser
+::parsePMT(PIDState_PMT* pidState, Boolean pusi, unsigned numDataBytes) {
+#ifdef DEBUG_CONTENTS
+  fprintf(stderr, "\tProgram Map Table\n");
+#endif
+  unsigned startPos = curOffset();
+
+  do {
+    if (pusi) {
+      u_int8_t pointer_field = get1Byte();
+      skipBytes(pointer_field); // usually 0
+    }
+
+    u_int8_t table_id = get1Byte();
+    if (table_id != 0x02) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG2TransportStreamParser::parsePMT(0x%04x, %d, %d): bad table_id: 0x%02x\n",
+	      pidState->PID, pusi, numDataBytes, table_id);
+#endif
+      break;
+    }
+
+    u_int16_t flagsPlusSection_length = get2Bytes();
+    u_int16_t section_length = flagsPlusSection_length&0x0FFF;
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "\t\tsection_length: %d\n", section_length);
+#endif
+    if (section_length < 13/*too small for remaining fields + CRC*/ ||
+	section_length > 1021/*as per specification*/) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG2TransportStreamParser::parsePMT(0x%04x, %d, %d): Bad section_length: %d\n",
+	      pidState->PID, pusi, numDataBytes, section_length);
+#endif
+      break;
+    }
+    unsigned endPos = curOffset() + section_length;
+    if (endPos - startPos > numDataBytes) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG2TransportStreamParser::parsePMT(0x%04x, %d, %d): section_length %d gives us a total size %d that's too large!\n",
+	      pidState->PID, pusi, numDataBytes, section_length, endPos - startPos);
+#endif
+      break;
+    }
+
+    u_int16_t program_number = get2Bytes();
+    if (program_number != pidState->program_number) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG2TransportStreamParser::parsePMT(0x%04x, %d, %d): program_number %d does not match the value %d that was given to us in the PAT!\n",
+	      pidState->PID, pusi, numDataBytes, program_number, pidState->program_number);
+#endif
+      break;
+    }
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "\t\tprogram_number: %d\n", program_number);
+
+    u_int8_t version_number_byte = get1Byte();
+    u_int8_t version_number = (version_number_byte&0x1E)>>1;
+    u_int8_t section_number = get1Byte();
+    u_int8_t last_section_number = get1Byte();
+    fprintf(stderr, "\t\tversion_number: %d; section_number: %d; last_section_number: %d\n",
+	    version_number, section_number, last_section_number);
+    u_int16_t PCR_PID = get2Bytes(); PCR_PID &= 0x1FFF;
+    fprintf(stderr, "\t\tPCR_PID: 0x%04x\n", PCR_PID);
+#else
+    skipBytes(5);
+#endif
+
+    u_int16_t program_info_length = get2Bytes(); program_info_length &= 0x0FFF;
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "\t\tprogram_info_length: %d\n", program_info_length);
+#endif
+    unsigned endOfDescriptors = curOffset() + program_info_length;
+    if (endOfDescriptors + 4/*CRC*/ - startPos > numDataBytes) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG2TransportStreamParser::parsePMT(0x%04x, %d, %d): program_info_length %d gives us a total size %d that's too large!\n",
+	      pidState->PID, pusi, numDataBytes, program_info_length, endOfDescriptors + 4 - startPos);
+#endif
+      break;
+    }
+    parseStreamDescriptors(program_info_length);
+
+    while (curOffset() <= endPos - 4/*for CRC*/ - 5/*for mapping fields*/) {
+      u_int8_t stream_type = get1Byte();
+      u_int16_t elementary_PID = get2Bytes(); elementary_PID &= 0x1FFF;
+      u_int16_t ES_info_length = get2Bytes(); ES_info_length &= 0x0FFF;
+#ifdef DEBUG_CONTENTS
+      extern StreamType StreamTypes[];
+      char const* const streamTypeDesc = StreamTypes[stream_type].description;
+      fprintf(stderr, "\t\tstream_type: 0x%02x (%s); elementary_PID: 0x%04x; ES_info_length: %d\n",
+	      stream_type, streamTypeDesc == NULL ? "???" : streamTypeDesc, elementary_PID, ES_info_length);
+#endif
+      endOfDescriptors = curOffset() + ES_info_length;
+      if (endOfDescriptors + 4/*CRC*/ - startPos > numDataBytes) {
+#ifdef DEBUG_ERRORS
+	fprintf(stderr, "MPEG2TransportStreamParser::parsePMT(0x%04x, %d, %d): ES_info_length %d gives us a total size %d that's too large!\n",
+		pidState->PID, pusi, numDataBytes, ES_info_length, endOfDescriptors + 4 - startPos);
+#endif
+	break;
+      }
+      parseStreamDescriptors(ES_info_length);
+
+      if (fPIDState[elementary_PID] == NULL) {
+        fPIDState[elementary_PID]
+	  = new PIDState_STREAM(*this, elementary_PID, program_number, stream_type);
+      }
+    }
+  } while (0);
+
+  // Skip (ignore) all remaining bytes in this packet (including the CRC):
+  int numBytesLeft = numDataBytes - (curOffset() - startPos);
+  if (numBytesLeft > 0) {
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "\t\t+%d CRC and stuffing bytes\n", numBytesLeft);
+#endif
+    skipBytes(numBytesLeft);
+  }
+}
+
+#ifdef DEBUG_CONTENTS
+#define pDesc(str) do { fprintf(stderr, "\t\t\tdescriptor_tag: 0x%02x (%s); descriptor_length: %d\n",descriptor_tag, (str), descriptor_length); } while (0)
+#else
+#define pDesc(str)
+#endif
+
+void MPEG2TransportStreamParser::parseStreamDescriptors(unsigned numDescriptorBytes) {
+  while (numDescriptorBytes >= 2/* enough for "descriptor_tag" and "descriptor_length" */) {
+    u_int8_t descriptor_tag = get1Byte();
+    u_int8_t descriptor_length = get1Byte();
+    numDescriptorBytes -= 2;
+
+    if (descriptor_length > numDescriptorBytes) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG2TransportStreamParser::parseStreamDescriptors() error: Saw descriptor_length %d > remaining bytes %d\n",
+              descriptor_length, numDescriptorBytes);
+#endif
+      skipBytes(numDescriptorBytes); numDescriptorBytes = 0;
+      break;
+    }
+
+    Boolean parsedDescriptor = False;
+    switch (descriptor_tag) {
+        // Note: These are the tags that we've seen to date.  Add more when we see more.
+      case 0x02: {
+        pDesc("video");
+        if (descriptor_length < 1) break;
+	u_int8_t flags = get1Byte();
+	Boolean MPEG_1_only_flag = (flags&0x04) != 0;
+#ifdef DEBUG_CONTENTS
+	fprintf(stderr, "\t\t\t\tflags: 0x%02x (frame_rate_code 0x%1x; MPEG_1_only_flag %d)\n",
+		flags, (flags&0x78)>>3, MPEG_1_only_flag);
+#endif
+	if (MPEG_1_only_flag == 0) {
+	  if (descriptor_length < 3) break;
+#ifdef DEBUG_CONTENTS
+	  u_int8_t profile_and_level_indication = get1Byte();
+	  flags = get1Byte();
+	  fprintf(stderr, "\t\t\t\tprofile_and_level_indication 0x%02x; flags 0x%02x (chroma_format 0x%1x)\n",
+		  profile_and_level_indication, flags, (flags&0xC0)>>6);
+#else
+	  skipBytes(2);
+#endif
+	}
+        numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x03: {
+        pDesc("audio");
+	if (descriptor_length < 1) break;
+#ifdef DEBUG_CONTENTS
+	u_int8_t flags = get1Byte();
+	fprintf(stderr, "\t\t\t\tflags: 0x%02x (layer %d)\n", flags, (flags&0x30)>>4);
+#else
+	skipBytes(1);
+#endif
+        numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x05: {
+        pDesc("registration");
+	if (descriptor_length < 4) break;
+#ifdef DEBUG_CONTENTS
+	u_int32_t format_identifier = get4Bytes();
+	fprintf(stderr, "\t\t\t\tformat_identifier: 0x%08x (%c%c%c%c)\n",
+		format_identifier,
+		format_identifier>>24, format_identifier>>16, format_identifier>>8, format_identifier);
+	if (descriptor_length > 4) {
+	  fprintf(stderr, "\t\t\t\tadditional_identification_info: ");
+	  for (unsigned i = 4; i < descriptor_length; ++i) fprintf(stderr, "%02x:", get1Byte());
+	  fprintf(stderr, "\n");
+	}
+#else
+	skipBytes(descriptor_length);
+#endif
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x06: {
+        pDesc("data stream alignment");
+	if (descriptor_length < 1) break;
+#ifdef DEBUG_CONTENTS
+	u_int8_t alignment_type = get1Byte();
+	fprintf(stderr, "\t\t\t\talignment_type: 0x%02x\n", alignment_type);
+#else
+	skipBytes(1);
+#endif
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x0a: {
+        pDesc("ISO 639 language descriptor");
+	for (unsigned i = 0; i < descriptor_length/4; ++i) {
+#ifdef DEBUG_CONTENTS
+	  fprintf(stderr, "\t\t\t\tISO_639_language_code: %c%c%c; audio_type: 0x%02x\n",
+		  get1Byte(), get1Byte(), get1Byte(), get1Byte());
+#else
+	  skipBytes(4);
+#endif
+	}
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x0b: {
+        pDesc("system clock");
+	if (descriptor_length < 2) break;
+#ifdef DEBUG_CONTENTS
+	u_int8_t flags = get1Byte();
+	Boolean external_clock_ref = (flags&0x80) != 0;
+	u_int8_t clock_accuracy_integer = flags&0x3F;
+
+	u_int8_t clock_accuracy_exponent = get1Byte(); clock_accuracy_exponent >>= 5;
+	float ppm = clock_accuracy_integer*1.0;
+	for (unsigned i = 0; i < clock_accuracy_exponent; ++i) ppm /= 10.0;
+	fprintf(stderr, "\t\t\t\texternal_clock: %d; clock_accuracy int: %d, exp: %d -> %f ppm\n",
+		external_clock_ref, clock_accuracy_integer, clock_accuracy_exponent, ppm);
+#else
+	skipBytes(2);
+#endif
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x0e: {
+        pDesc("maximum bitrate");
+	if (descriptor_length < 3) break;
+#ifdef DEBUG_CONTENTS
+	u_int32_t maximum_bitrate = ((get1Byte()&0x3F)<<16)|get2Bytes(); // 22 bits
+	fprintf(stderr, "\t\t\t\tmaximum_bitrate: %d => %f Mbps\n",
+		maximum_bitrate, (maximum_bitrate*50*8)/1000000.0);
+#else
+	skipBytes(3);
+#endif
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x10: {
+        pDesc("smoothing buffer");
+	if (descriptor_length < 6) break;
+#ifdef DEBUG_CONTENTS
+	u_int32_t sb_leak_rate = ((get1Byte()&0x3F)<<16)|get2Bytes(); // 22 bits
+	u_int32_t sb_size = ((get1Byte()&0x3F)<<16)|get2Bytes(); // 22 bits
+	fprintf(stderr, "\t\t\t\tsb_leak_rate: %d => %f Mbps; sb_size: %d bytes\n",
+		sb_leak_rate, (sb_leak_rate*400)/1000000.0, sb_size);
+#else
+	skipBytes(6);
+#endif
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x1d: {
+        pDesc("IOD parameters for ISO/IEC 14496-1");
+        // Note: We don't know how to parse this.  (Where's a document that describes this?)
+        skipBytes(descriptor_length); numDescriptorBytes -= descriptor_length;
+        parsedDescriptor = True;
+        break;
+      }
+      case 0x28: {
+        pDesc("H.264 video parameters");
+	if (descriptor_length < 4) break;
+#ifdef DEBUG_CONTENTS
+	u_int8_t profile_idc = get1Byte();
+	u_int8_t flags1 = get1Byte();
+	u_int8_t level_idc = get1Byte();
+	u_int8_t flags2 = get1Byte();
+	fprintf(stderr, "\t\t\t\tprofile_idc: 0x%02x, flags1: 0x%02x, level_idc: 0x%02x, flags2: 0x%02x\n",
+		profile_idc, flags1, level_idc, flags2);
+#else
+	skipBytes(4);
+#endif
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x52: {
+        pDesc("stream identifier");
+	if (descriptor_length < 1) break;
+#ifdef DEBUG_CONTENTS
+	u_int8_t component_tag = get1Byte();
+	fprintf(stderr, "\t\t\t\tcomponent_tag: %d\n", component_tag);
+#else
+	skipBytes(1);
+#endif
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x56: {
+        pDesc("teletext");
+	for (unsigned i = 0; i < descriptor_length/5; ++i) {
+#ifdef DEBUG_CONTENTS
+	  fprintf(stderr, "\t\t\t\tISO_639_language_code: %c%c%c",
+		  get1Byte(), get1Byte(), get1Byte());
+	  u_int8_t typePlusMagazine = get1Byte();
+	  fprintf(stderr, "; type: 0x%02x; magazine: %d; page: %d\n",
+		  typePlusMagazine>>3, typePlusMagazine&0x07, get1Byte());
+#else
+	  skipBytes(5);
+#endif
+	}
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x59: {
+        pDesc("subtitling");
+	for (unsigned i = 0; i < descriptor_length/8; ++i) {
+#ifdef DEBUG_CONTENTS
+	  fprintf(stderr, "\t\t\t\tISO_639_language_code: %c%c%c",
+		  get1Byte(), get1Byte(), get1Byte());
+	  fprintf(stderr, "; subtitling_type: 0x%02x; composition_page_id: 0x%04x; ancillary_page_id: 0x%04x\n",
+		  get1Byte(), get2Bytes(), get2Bytes());
+#else
+	  skipBytes(8);
+#endif
+	}
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x6f: {
+        pDesc("application signalling");
+	for (unsigned i = 0; i < descriptor_length/3; ++i) {
+#ifdef DEBUG_CONTENTS
+	  fprintf(stderr, "\t\t\t\tapplication_type: 0x%04x; AIT_version_number: %d\n",
+		  get2Bytes()&0x7FFF, get1Byte()&0x1F);
+#else
+	  skipBytes(3);
+#endif
+	}
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x7a: {
+        pDesc("enhanced AC-3");
+	if (descriptor_length < 1) break;
+#ifdef DEBUG_CONTENTS
+	u_int8_t flags = get1Byte();
+	fprintf(stderr, "\t\t\t\tflags: 0x%02x", flags);
+	if (descriptor_length > 1) {
+	  fprintf(stderr, "; extra bytes: ");
+	  for (unsigned i = 1; i < descriptor_length; ++i) fprintf(stderr, "0x%02x ", get1Byte());
+	}
+	fprintf(stderr, "\n");
+#else
+	skipBytes(descriptor_length);
+#endif
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x81: {
+        pDesc("AC-3 audio");
+	if (descriptor_length < 3) break;
+#ifdef DEBUG_CONTENTS
+	u_int8_t flags = get1Byte();
+	fprintf(stderr, "\t\t\t\tsample_rate_code: %d; bsid: 0x%02x",
+		flags>>5, flags&0x1F);
+	flags = get1Byte();
+	fprintf(stderr, "; bit_rate_code: %d; surround_mode: %d",
+		flags>>2, flags&0x03);
+	flags = get1Byte();
+	fprintf(stderr, "; bsmod: %d; num_channels: %d; full_svc: %d",
+		flags>>5, (flags&0x1E)>>1, (flags&0x01));
+	if (descriptor_length > 3) {
+	  fprintf(stderr, "; extra bytes: ");
+	  for (unsigned i = 3; i < descriptor_length; ++i) fprintf(stderr, "0x%02x ", get1Byte());
+	}
+	fprintf(stderr, "\n");
+#else
+	skipBytes(descriptor_length);
+#endif
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+      case 0x86: {
+        pDesc("caption service");
+	if (descriptor_length < 1) break;
+	u_int8_t number_of_services = get1Byte()&0x1F;
+#ifdef DEBUG_CONTENTS
+	fprintf(stderr, "\t\t\t\tnumber_of_services: %d\n", number_of_services);
+#endif
+	if (descriptor_length < number_of_services*6) break;
+#ifdef DEBUG_CONTENTS
+	for (unsigned i = 0; i < number_of_services; ++i) {
+	  fprintf(stderr, "\t\t\t\t\tlanguage: %c%c%c", get1Byte(), get1Byte(), get1Byte());
+
+	  u_int8_t flags = get1Byte();
+	  Boolean digital_cc = (flags&0x80) != 0;
+	  fprintf(stderr, "; digital_cc %d", digital_cc);
+	  if (digital_cc == 0) {
+	    fprintf(stderr, "; line21_field: %d", flags&0x01);
+	  } else {
+	    fprintf(stderr, "; caption_service_number: %d", flags&0x3F);
+	  }
+
+	  u_int16_t flags2 = get2Bytes();
+	  fprintf(stderr, "; easy_reader: %d; wide_aspect_ratio: %d\n",
+		  (flags2&0x8000) != 0, (flags2&0x4000) != 0);
+	}
+#else
+	skipBytes(number_of_services*6);
+#endif
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+      }
+     default: {
+        pDesc("???");
+	skipBytes(descriptor_length);
+	numDescriptorBytes -= descriptor_length; parsedDescriptor = True;
+        break;
+     }
+    }
+    if (!parsedDescriptor) break; // an error occurred
+  }
+
+  // Skip over any remaining descriptor bytes (as a result of a parsing error):
+  if (numDescriptorBytes > 0) {
+#ifdef DEBUG_ERRORS
+    fprintf(stderr, "MPEG2TransportStreamParser::parseStreamDescriptors() Parsing error left %d bytes unparsed\n",
+	    numDescriptorBytes);
+#endif
+    skipBytes(numDescriptorBytes);
+  }
+}
+
+
+//########## PIDState_PMT implementation ##########
+
+PIDState_PMT
+::PIDState_PMT(MPEG2TransportStreamParser& parser, u_int16_t pid, u_int16_t programNumber)
+  : PIDState(parser, pid, PMT),
+    program_number(programNumber) {
+}
+
+PIDState_PMT::~PIDState_PMT() {
+}
diff --git a/liveMedia/MPEG2TransportStreamParser_STREAM.cpp b/liveMedia/MPEG2TransportStreamParser_STREAM.cpp
new file mode 100644
index 0000000..ccc1f29
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamParser_STREAM.cpp
@@ -0,0 +1,310 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A parser for a MPEG Transport Stream
+// Implementation
+
+#include "MPEG2TransportStreamParser.hh"
+#include "FileSink.hh"
+#include <time.h> // for time_t
+
+Boolean MPEG2TransportStreamParser
+::processStreamPacket(PIDState_STREAM* pidState, Boolean pusi, unsigned numDataBytes) {
+#ifdef DEBUG_CONTENTS
+  extern StreamType StreamTypes[];
+  fprintf(stderr, "\t%s stream (stream_type 0x%02x)\n",
+	  StreamTypes[pidState->stream_type].description, pidState->stream_type);
+#endif
+  do {
+    MPEG2TransportStreamDemuxedTrack* streamSource = pidState->streamSource;
+    if (streamSource == NULL) {
+      // There's no source for this track; just skip the data:
+      skipBytes(numDataBytes);
+      break;
+    }
+
+    if (!streamSource->isCurrentlyAwaitingData()) {
+      // Wait until the source next gets read from.  (The parsing will continue then.)
+      return False;
+    }
+
+    // If the data begins with a PES header, parse it first
+    unsigned pesHeaderSize = 0;
+    if (pusi && pidState->stream_type != 0x05/*these special private streams don't have PES hdrs*/) {
+      pesHeaderSize = parsePESHeader(pidState, numDataBytes);
+      if (pesHeaderSize == 0) break; // PES header parsing failed
+    }
+
+    // Deliver the data:
+    unsigned numBytesToDeliver = numDataBytes - pesHeaderSize;
+    if (numBytesToDeliver > streamSource->maxSize()) {
+      streamSource->frameSize() = streamSource->maxSize();
+      streamSource->numTruncatedBytes() = numBytesToDeliver - streamSource->maxSize();
+    } else {
+      streamSource->frameSize() = numBytesToDeliver;
+      streamSource->numTruncatedBytes() = 0;
+    }
+    getBytes(streamSource->to(), streamSource->frameSize());
+    skipBytes(streamSource->numTruncatedBytes());
+
+    double pts = pidState->lastSeenPTS == 0.0 ? fLastSeenPCR : pidState->lastSeenPTS;
+    streamSource->presentationTime().tv_sec = (time_t)pts;
+    streamSource->presentationTime().tv_usec = int(pts*1000000.0)%1000000;
+
+    FramedSource::afterGetting(streamSource); // completes delivery
+  } while (0);
+
+  return True;
+}
+
+static Boolean isSpecialStreamId[0x100];
+
+unsigned MPEG2TransportStreamParser
+::parsePESHeader(PIDState_STREAM* pidState, unsigned numDataBytes) {
+  static Boolean haveInitializedIsSpecialStreamId = False;
+  if (!haveInitializedIsSpecialStreamId) {
+    for (unsigned i = 0; i < 0x100; ++i) isSpecialStreamId[i] = False;
+    isSpecialStreamId[0xBC] = True; // program_stream_map
+    isSpecialStreamId[0xBE] = True; // padding_stream
+    isSpecialStreamId[0xBF] = True; // private_stream_2
+    isSpecialStreamId[0xF0] = True; // ECM_stream
+    isSpecialStreamId[0xF1] = True; // EMM_stream
+    isSpecialStreamId[0xF2] = True; // DSMCC_stream
+    isSpecialStreamId[0xF8] = True; // ITU-T Rec. H.222.1 type E
+    isSpecialStreamId[0xFF] = True; // program_stream_directory
+
+    haveInitializedIsSpecialStreamId = True; // from now on
+  }
+
+#ifdef DEBUG_CONTENTS
+  fprintf(stderr, "\t\tPES Header:\n");
+#endif
+  unsigned startPos = curOffset();
+
+  do {
+    u_int32_t startCodePlusStreamId = get4Bytes();
+    if ((startCodePlusStreamId&0xFFFFFF00) != 0x00000100) {
+#ifdef DEBUG_ERRORS
+      fprintf(stderr, "MPEG2TransportStreamParser::parsePESHeader(0x%02x, %d): Bad start code: 0x%06x\n",
+	      pidState->PID, numDataBytes, startCodePlusStreamId>>8);
+#endif
+      break;
+    }
+    u_int8_t stream_id = startCodePlusStreamId&0xFF;
+
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "\t\t\tstream_id: 0x%02x; PES_packet_length: %d\n",
+	    stream_id, get2Bytes());
+#else
+    skipBytes(2);
+#endif
+
+    if (!isSpecialStreamId[stream_id]) {
+      u_int16_t flags = get2Bytes();
+      if ((flags&0xC000) != 0x8000) {
+#ifdef DEBUG_ERRORS
+	fprintf(stderr, "MPEG2TransportStreamParser::parsePESHeader(0x%02x, %d): Bad flags: 0x%04x\n",
+		pidState->PID, numDataBytes, flags);
+#endif
+	break;
+      }
+      u_int8_t PTS_DTS_flags = (flags&0x00C0)>>6;
+      Boolean ESCR_flag = (flags&0x0020) != 0;
+      Boolean ES_rate_flag = (flags&0x0010) != 0;
+      Boolean DSM_trick_mode_flag = (flags&0x0008) != 0;
+      Boolean additional_copy_info_flag = (flags&0x0004) != 0;
+      Boolean PES_CRC_flag = (flags&0x0002) != 0;
+      Boolean PES_extension_flag = (flags&0x0001) != 0;
+#ifdef DEBUG_CONTENTS
+      fprintf(stderr, "\t\t\tflags: 0x%04x (PTS_DTS:%d; ESCR:%d; ES_rate:%d; DSM_trick_mode:%d; additional_copy_info:%d; PES_CRC:%d; PES_extension:%d)\n",
+	      flags, PTS_DTS_flags, ESCR_flag, ES_rate_flag, DSM_trick_mode_flag, additional_copy_info_flag, PES_CRC_flag, PES_extension_flag);
+#endif
+
+      u_int8_t PES_header_data_length = get1Byte();
+#ifdef DEBUG_CONTENTS
+      fprintf(stderr, "\t\t\tPES_header_data_length: %d\n", PES_header_data_length);
+#endif
+
+      if (PTS_DTS_flags == 2 || PTS_DTS_flags == 3) {
+	// Begin with a PTS:
+	u_int8_t first8PTSBits = get1Byte();
+	u_int32_t last32PTSBits = get4Bytes();
+	if ((first8PTSBits&0xF1) != ((PTS_DTS_flags<<4)|0x01) ||
+	    (last32PTSBits&0x00010001) != 0x00010001) {
+#ifdef DEBUG_ERRORS
+	  fprintf(stderr, "MPEG2TransportStreamParser::parsePESHeader(0x%02x, %d): Bad PTS bits: 0x%02x,0x%08x\n",
+		  pidState->PID, numDataBytes, first8PTSBits, last32PTSBits);
+#endif
+	  break;
+	}
+	u_int32_t ptsUpper32 = ((first8PTSBits&0x0E)<<28) | ((last32PTSBits&0xFFFE0000)>>3) | ((last32PTSBits&0x0000FFFC)>>2);
+	u_int8_t ptsLowBit = (last32PTSBits&0x00000002)>>1;
+	double PTS = ptsUpper32/45000.0;
+	if (ptsLowBit) PTS += 1/90000.0;
+#ifdef DEBUG_CONTENTS
+	fprintf(stderr, "\t\t\tPTS: 0x%02x%08x => 0x%08x+%d => %.10f\n",
+		first8PTSBits, last32PTSBits, ptsUpper32, ptsLowBit, PTS);
+#endif
+	// Record this PTS:
+	pidState->lastSeenPTS = PTS;
+      }
+
+      if (PTS_DTS_flags == 3) {
+	// Continue with a DTS:
+	u_int8_t first8DTSBits = get1Byte();
+	u_int32_t last32DTSBits = get4Bytes();
+	if ((first8DTSBits&0x11) != 0x11 ||
+	    (last32DTSBits&0x00010001) != 0x00010001) {
+#ifdef DEBUG_ERRORS
+	  fprintf(stderr, "MPEG2TransportStreamParser::parsePESHeader(0x%02x, %d): Bad DTS bits: 0x%02x,0x%08x\n",
+		  pidState->PID, numDataBytes, first8DTSBits, last32DTSBits);
+#endif
+	  break;
+	}
+	u_int32_t dtsUpper32 = ((first8DTSBits&0x0E)<<28) | ((last32DTSBits&0xFFFE0000)>>3) | ((last32DTSBits&0x0000FFFC)>>2);
+	u_int8_t dtsLowBit = (last32DTSBits&0x00000002)>>1;
+	double DTS = dtsUpper32/45000.0;
+	if (dtsLowBit) DTS += 1/90000.0;
+#ifdef DEBUG_CONTENTS
+	fprintf(stderr, "\t\t\tDTS: 0x%02x%08x => 0x%08x+%d => %.10f\n",
+		first8DTSBits, last32DTSBits, dtsUpper32, dtsLowBit, DTS);
+#endif
+      }
+
+      if (ESCR_flag) {
+	// Skip over the ESCR
+        skipBytes(6);
+      }
+
+      if (ES_rate_flag) {
+	// Skip over the ES_rate
+        skipBytes(6);
+      }
+
+      if (DSM_trick_mode_flag) {
+	// Skip over this
+        skipBytes(1);
+      }
+
+      if (additional_copy_info_flag) {
+	// Skip over this
+        skipBytes(1);
+      }
+
+      if (PES_CRC_flag) {
+	// Skip over this
+        skipBytes(2);
+      }
+
+      if (PES_extension_flag) {
+	u_int8_t flags = get1Byte();
+	Boolean PES_private_data_flag = (flags&0x80) != 0;
+	Boolean pack_header_field_flag = (flags&0x40) != 0;
+	Boolean program_packet_sequence_counter_flag = (flags&0x20) != 0;
+	Boolean P_STD_buffer_flag = (flags&0x10) != 0;
+	Boolean PES_extension_flag_2 = (flags&0x01) != 0;
+#ifdef DEBUG_CONTENTS
+	fprintf(stderr, "\t\t\tPES_extension: flags: 0x%02x (PES_private_data:%d; pack_header_field:%d; program_packet_sequence_counter:%d; P_STD_buffer:%d; PES_extension_2:%d\n",
+		flags, PES_private_data_flag, pack_header_field_flag, program_packet_sequence_counter_flag, P_STD_buffer_flag, PES_extension_flag_2);
+#endif
+	if (PES_private_data_flag) {
+	  // Skip over this
+	  skipBytes(16);
+	}
+	if (pack_header_field_flag) {
+	  // Skip over this
+	  skipBytes(1 + 12); // "pack_header()" is 12 bytes in size
+	}
+	if (program_packet_sequence_counter_flag) {
+	  // Skip over this
+	  skipBytes(2);
+	}
+	if (P_STD_buffer_flag) {
+	  // Skip over this
+	  skipBytes(2);
+	}
+	if (PES_extension_flag_2) {
+	  u_int8_t PES_extension_field_length = get1Byte()&0x7F;
+#ifdef DEBUG_CONTENTS
+	  fprintf(stderr, "\t\t\t\tPES_extension_field_length: %d\n", PES_extension_field_length);
+#endif
+	  skipBytes(PES_extension_field_length);
+	}
+      }
+
+      // Make sure that the number of header bytes parsed is consistent with "PES_header_data_length"
+      // (and skip over any remasining 'stuffing' bytes):
+      if (curOffset() - startPos > 9 + PES_header_data_length) {
+#ifdef DEBUG_ERRORS
+	fprintf(stderr, "MPEG2TransportStreamParser::parsePESHeader(0x%02x, %d): Error: Parsed %d PES header bytes; expected %d (based on \"PES_header_data_length\": %d)\n",
+		pidState->PID, numDataBytes, curOffset() - startPos, 9 + PES_header_data_length,
+		PES_header_data_length);
+#endif
+	break;
+      }
+      skipBytes(9 + PES_header_data_length - (curOffset() - startPos)); // >= 0
+    }
+
+    unsigned PESHeaderSize = curOffset() - startPos;
+#ifdef DEBUG_CONTENTS
+    fprintf(stderr, "\t\t\t=> PES header size: %d\n", PESHeaderSize);
+#endif
+    if (PESHeaderSize > numDataBytes) {
+#ifdef DEBUG_ERRORS
+	fprintf(stderr, "MPEG2TransportStreamParser::parsePESHeader(0x%02x, %d): Error: PES header size %d is larger than the number of bytes available (%d)\n",
+		pidState->PID, numDataBytes, PESHeaderSize, numDataBytes);
+#endif
+      break;
+    }
+    return PESHeaderSize;
+  } while (0);
+
+  // An error occurred.  Skip over any remaining bytes in the packet:
+  int numBytesLeft = numDataBytes - (curOffset() - startPos);
+  if (numBytesLeft > 0) skipBytes((unsigned)numBytesLeft);
+  return 0;
+}
+
+
+//########## PIDState_STREAM implementation ##########
+
+PIDState_STREAM::PIDState_STREAM(MPEG2TransportStreamParser& parser,
+				 u_int16_t pid, u_int16_t programNumber, u_int8_t streamType)
+  : PIDState(parser, pid, STREAM),
+    program_number(programNumber), stream_type(streamType), lastSeenPTS(0.0) {
+  // Create the 'source' and 'sink' objects for this track, and 'start playing' them:
+  streamSource = new MPEG2TransportStreamDemuxedTrack(parser, pid);
+
+  char fileName[100];
+  extern StreamType StreamTypes[];
+  StreamType& st = StreamTypes[streamType]; // alias
+  sprintf(fileName, "%s-0x%04x-0x%04x%s",
+	  st.dataType == StreamType::AUDIO ? "AUDIO" :
+	  st.dataType == StreamType::VIDEO ? "VIDEO" :
+	  st.dataType == StreamType::DATA ? "DATA" :
+	  st.dataType == StreamType::TEXT ? "TEXT" :
+	  "UNKNOWN",
+	  program_number, pid, st.filenameSuffix);
+  fprintf(stderr, "Creating new output file \"%s\"\n", fileName);
+  streamSink = FileSink::createNew(parser.envir(), fileName);
+  streamSink->startPlaying(*streamSource, NULL, NULL);
+}
+
+PIDState_STREAM::~PIDState_STREAM() {
+  Medium::close(streamSink);
+  Medium::close(streamSource);
+}
diff --git a/liveMedia/MPEG2TransportStreamTrickModeFilter.cpp b/liveMedia/MPEG2TransportStreamTrickModeFilter.cpp
new file mode 100644
index 0000000..62c6e26
--- /dev/null
+++ b/liveMedia/MPEG2TransportStreamTrickModeFilter.cpp
@@ -0,0 +1,266 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that converts a MPEG Transport Stream file - with corresponding index file
+// - to a corresponding Video Elementary Stream.  It also uses a "scale" parameter
+// to implement 'trick mode' (fast forward or reverse play, using I-frames) on
+// the video stream.
+// Implementation
+
+#include "MPEG2TransportStreamTrickModeFilter.hh"
+#include <ByteStreamFileSource.hh>
+
+// Define the following to be True if we want the output file to have the same frame rate as the original file.
+//    (Because the output file contains I-frames only, this means that each I-frame will appear in the output file
+//     several times, and therefore the output file's bitrate will be significantly higher than that of the original.)
+// Define the following to be False if we want the output file to include each I-frame no more than once.
+//    (This means that - except for high 'scale' values - both the output frame rate and the output bit rate
+//     will be less than that of the original.)
+#define KEEP_ORIGINAL_FRAME_RATE False
+
+MPEG2TransportStreamTrickModeFilter* MPEG2TransportStreamTrickModeFilter
+::createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    MPEG2TransportStreamIndexFile* indexFile, int scale) {
+  return new MPEG2TransportStreamTrickModeFilter(env, inputSource, indexFile, scale);
+}
+
+MPEG2TransportStreamTrickModeFilter
+::MPEG2TransportStreamTrickModeFilter(UsageEnvironment& env, FramedSource* inputSource,
+				      MPEG2TransportStreamIndexFile* indexFile, int scale)
+  : FramedFilter(env, inputSource),
+    fHaveStarted(False), fIndexFile(indexFile), fScale(scale), fDirection(1),
+    fState(SKIPPING_FRAME), fFrameCount(0),
+    fNextIndexRecordNum(0), fNextTSPacketNum(0),
+    fCurrentTSPacketNum((unsigned long)(-1)), fUseSavedFrameNextTime(False) {
+  if (fScale < 0) { // reverse play
+    fScale = -fScale;
+    fDirection = -1;
+  }
+}
+
+MPEG2TransportStreamTrickModeFilter::~MPEG2TransportStreamTrickModeFilter() {
+}
+
+Boolean MPEG2TransportStreamTrickModeFilter::seekTo(unsigned long tsPacketNumber,
+						    unsigned long indexRecordNumber) {
+  seekToTransportPacket(tsPacketNumber);
+  fNextIndexRecordNum = indexRecordNumber;
+  return True;
+}
+
+#define isIFrameStart(type) ((type) == 0x81/*actually, a VSH*/ || (type) == 0x85/*actually, a SPS, for H.264*/ || (type) == 0x8B/*actually, a VPS, for H.265*/)
+  // This relies upon I-frames always being preceded by a VSH+GOP (for MPEG-2 data),
+  // by a SPS (for H.264 data), or by a VPS (for H.265 data)
+#define isNonIFrameStart(type) ((type) == 0x83 || (type) == 0x88/*for H.264*/ || (type) == 0x8E/*for H.265*/)
+
+void MPEG2TransportStreamTrickModeFilter::doGetNextFrame() {
+  //  fprintf(stderr, "#####DGNF1\n");
+  // If our client's buffer size is too small, then deliver
+  // a 0-byte 'frame', to tell it to process all of the data that it has
+  // already read, before asking for more data from us:
+  if (fMaxSize < TRANSPORT_PACKET_SIZE) {
+    fFrameSize = 0;
+    afterGetting(this);
+    return;
+  }
+
+  while (1) {
+    // Get the next record from our index file.
+    // This tells us the type of frame this data is, which Transport Stream packet
+    // (from the input source) the data comes from, and where in the Transport Stream
+    // packet it comes from:
+    u_int8_t recordType;
+    float recordPCR;
+    Boolean endOfIndexFile = False;
+    if (!fIndexFile->readIndexRecordValues(fNextIndexRecordNum,
+					   fDesiredTSPacketNum, fDesiredDataOffset,
+					   fDesiredDataSize, recordPCR,
+					   recordType)) {
+      // We ran off the end of the index file.  If we're not delivering a
+      // pre-saved frame, then handle this the same way as if the
+      // input Transport Stream source ended.
+      if (fState != DELIVERING_SAVED_FRAME) {
+	onSourceClosure1();
+	return;
+      }
+      endOfIndexFile = True;
+    } else if (!fHaveStarted) {
+      fFirstPCR = recordPCR;
+      fHaveStarted = True;
+    }
+    //    fprintf(stderr, "#####read index record %ld: ts %ld: %c, PCR %f\n", fNextIndexRecordNum, fDesiredTSPacketNum, isIFrameStart(recordType) ? 'I' : isNonIFrameStart(recordType) ? 'j' : 'x', recordPCR);
+    fNextIndexRecordNum
+      += (fState == DELIVERING_SAVED_FRAME) ? 1 : fDirection;
+
+    // Handle this index record, depending on the record type and our current state:
+    switch (fState) {
+    case SKIPPING_FRAME:
+    case SAVING_AND_DELIVERING_FRAME: {
+      //      if (fState == SKIPPING_FRAME) fprintf(stderr, "\tSKIPPING_FRAME\n"); else fprintf(stderr, "\tSAVING_AND_DELIVERING_FRAME\n");//#####
+      if (isIFrameStart(recordType)) {
+	// Save a record of this frame:
+	fSavedFrameIndexRecordStart = fNextIndexRecordNum - fDirection;
+	fUseSavedFrameNextTime = True;
+	//	fprintf(stderr, "\trecording\n");//#####
+	if ((fFrameCount++)%fScale == 0 && fUseSavedFrameNextTime) {
+	  // A frame is due now.
+	  fFrameCount = 1; // reset to avoid overflow
+	  if (fDirection > 0) {
+	    // Begin delivering this frame, as we're scanning it:
+	    fState = SAVING_AND_DELIVERING_FRAME;
+	    //	    fprintf(stderr, "\tdelivering\n");//#####
+	    fDesiredDataPCR = recordPCR; // use this frame's PCR
+	    attemptDeliveryToClient();
+	    return;
+	  } else {
+	    // Deliver this frame, then resume normal scanning:
+	    // (This relies on the index records having begun with an I-frame.)
+	    fState = DELIVERING_SAVED_FRAME;
+	    fSavedSequentialIndexRecordNum = fNextIndexRecordNum;
+	    fDesiredDataPCR = recordPCR;
+	    // use this frame's (not the saved frame's) PCR
+	    fNextIndexRecordNum = fSavedFrameIndexRecordStart;
+	    //	    fprintf(stderr, "\tbeginning delivery of saved frame\n");//#####
+	  }
+	} else {
+	  // No frame is needed now:
+	  fState = SKIPPING_FRAME;
+	}
+      } else if (isNonIFrameStart(recordType)) {
+	if ((fFrameCount++)%fScale == 0 && fUseSavedFrameNextTime) {
+	  // A frame is due now, so begin delivering the one that we had saved:
+	  // (This relies on the index records having begun with an I-frame.)
+	  fFrameCount = 1; // reset to avoid overflow
+	  fState = DELIVERING_SAVED_FRAME;
+	  fSavedSequentialIndexRecordNum = fNextIndexRecordNum;
+	  fDesiredDataPCR = recordPCR;
+	  // use this frame's (not the saved frame's) PCR
+	  fNextIndexRecordNum = fSavedFrameIndexRecordStart;
+	  //	  fprintf(stderr, "\tbeginning delivery of saved frame\n");//#####
+	} else {
+	  // No frame is needed now:
+	  fState = SKIPPING_FRAME;
+	}
+      } else {
+	// Not the start of a frame, but deliver it, if it's needed:
+	if (fState == SAVING_AND_DELIVERING_FRAME) {
+	  //	  fprintf(stderr, "\tdelivering\n");//#####
+	  fDesiredDataPCR = recordPCR; // use this frame's PCR
+	  attemptDeliveryToClient();
+	  return;
+	}
+      }
+      break;
+    }
+    case DELIVERING_SAVED_FRAME: {
+      //      fprintf(stderr, "\tDELIVERING_SAVED_FRAME\n");//#####
+      if (endOfIndexFile
+	  || (isIFrameStart(recordType)
+	      && fNextIndexRecordNum-1 != fSavedFrameIndexRecordStart)
+	  || isNonIFrameStart(recordType)) {
+	//	fprintf(stderr, "\tended delivery of saved frame\n");//#####
+	// We've reached the end of the saved frame, so revert to the
+	// original sequence of index records:
+	fNextIndexRecordNum = fSavedSequentialIndexRecordNum;
+	fUseSavedFrameNextTime = KEEP_ORIGINAL_FRAME_RATE;
+	fState = SKIPPING_FRAME;
+      } else {
+	// Continue delivering:
+	//	fprintf(stderr, "\tdelivering\n");//#####
+	attemptDeliveryToClient();
+	return;
+      }
+      break;
+    }
+    }
+  }
+}
+
+void MPEG2TransportStreamTrickModeFilter::doStopGettingFrames() {
+  FramedFilter::doStopGettingFrames();
+  fIndexFile->stopReading();
+}
+
+void MPEG2TransportStreamTrickModeFilter::attemptDeliveryToClient() {
+  if (fCurrentTSPacketNum == fDesiredTSPacketNum) {
+    //    fprintf(stderr, "\t\tdelivering ts %d:%d, %d bytes, PCR %f\n", fCurrentTSPacketNum, fDesiredDataOffset, fDesiredDataSize, fDesiredDataPCR);//#####
+    // We already have the Transport Packet that we want.  Deliver its data:
+    memmove(fTo, &fInputBuffer[fDesiredDataOffset], fDesiredDataSize);
+    fFrameSize = fDesiredDataSize;
+    float deliveryPCR = fDirection*(fDesiredDataPCR - fFirstPCR)/fScale;
+    if (deliveryPCR < 0.0) deliveryPCR = 0.0;
+    fPresentationTime.tv_sec = (unsigned long)deliveryPCR;
+    fPresentationTime.tv_usec
+      = (unsigned long)((deliveryPCR - fPresentationTime.tv_sec)*1000000.0f);
+    //    fprintf(stderr, "#####DGNF9\n");
+
+    afterGetting(this);
+  } else {
+    // Arrange to read the Transport Packet that we want:
+    readTransportPacket(fDesiredTSPacketNum);
+  }
+}
+
+void MPEG2TransportStreamTrickModeFilter::seekToTransportPacket(unsigned long tsPacketNum) {
+  if (tsPacketNum == fNextTSPacketNum) return; // we're already there
+
+  ByteStreamFileSource* tsFile = (ByteStreamFileSource*)fInputSource;
+  u_int64_t tsPacketNum64 = (u_int64_t)tsPacketNum;
+  tsFile->seekToByteAbsolute(tsPacketNum64*TRANSPORT_PACKET_SIZE);
+
+  fNextTSPacketNum = tsPacketNum;
+}
+
+void MPEG2TransportStreamTrickModeFilter::readTransportPacket(unsigned long tsPacketNum) {
+  seekToTransportPacket(tsPacketNum);
+  fInputSource->getNextFrame(fInputBuffer, TRANSPORT_PACKET_SIZE,
+			     afterGettingFrame, this,
+			     onSourceClosure, this);
+}
+
+void MPEG2TransportStreamTrickModeFilter
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned /*numTruncatedBytes*/,
+		    struct timeval presentationTime,
+		    unsigned /*durationInMicroseconds*/) {
+  MPEG2TransportStreamTrickModeFilter* filter = (MPEG2TransportStreamTrickModeFilter*)clientData;
+  filter->afterGettingFrame1(frameSize);
+}
+
+void MPEG2TransportStreamTrickModeFilter::afterGettingFrame1(unsigned frameSize) {
+  if (frameSize != TRANSPORT_PACKET_SIZE) {
+    // Treat this as if the input source ended:
+    onSourceClosure1();
+    return;
+  }
+
+  fCurrentTSPacketNum = fNextTSPacketNum; // i.e., the one that we just read
+  ++fNextTSPacketNum;
+
+  // Attempt deliver again:
+  attemptDeliveryToClient();
+}
+
+void MPEG2TransportStreamTrickModeFilter::onSourceClosure(void* clientData) {
+  MPEG2TransportStreamTrickModeFilter* filter = (MPEG2TransportStreamTrickModeFilter*)clientData;
+  filter->onSourceClosure1();
+}
+
+void MPEG2TransportStreamTrickModeFilter::onSourceClosure1() {
+  fIndexFile->stopReading();
+  handleClosure();
+}
diff --git a/liveMedia/MPEG2TransportUDPServerMediaSubsession.cpp b/liveMedia/MPEG2TransportUDPServerMediaSubsession.cpp
new file mode 100644
index 0000000..8a9df3a
--- /dev/null
+++ b/liveMedia/MPEG2TransportUDPServerMediaSubsession.cpp
@@ -0,0 +1,75 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an incoming UDP (or RTP/UDP) MPEG-2 Transport Stream
+// Implementation
+
+#include "MPEG2TransportUDPServerMediaSubsession.hh"
+#include "BasicUDPSource.hh"
+#include "SimpleRTPSource.hh"
+#include "MPEG2TransportStreamFramer.hh"
+#include "SimpleRTPSink.hh"
+#include "GroupsockHelper.hh"
+
+
+MPEG2TransportUDPServerMediaSubsession*
+MPEG2TransportUDPServerMediaSubsession::createNew(UsageEnvironment& env,
+						  char const* inputAddressStr, Port const& inputPort, Boolean inputStreamIsRawUDP) {
+  return new MPEG2TransportUDPServerMediaSubsession(env, inputAddressStr, inputPort, inputStreamIsRawUDP);
+}
+
+MPEG2TransportUDPServerMediaSubsession
+::MPEG2TransportUDPServerMediaSubsession(UsageEnvironment& env,
+                                         char const* inputAddressStr, Port const& inputPort, Boolean inputStreamIsRawUDP)
+  : OnDemandServerMediaSubsession(env, True/*reuseFirstSource*/),
+    fInputPort(inputPort), fInputGroupsock(NULL), fInputStreamIsRawUDP(inputStreamIsRawUDP) {
+  fInputAddressStr = strDup(inputAddressStr);
+}
+
+MPEG2TransportUDPServerMediaSubsession::
+~MPEG2TransportUDPServerMediaSubsession() {
+  delete fInputGroupsock;
+  delete[] (char*)fInputAddressStr;
+}
+
+FramedSource* MPEG2TransportUDPServerMediaSubsession
+::createNewStreamSource(unsigned/* clientSessionId*/, unsigned& estBitrate) {
+  estBitrate = 5000; // kbps, estimate
+
+  if (fInputGroupsock == NULL) {
+    // Create a 'groupsock' object for receiving the input stream:
+    struct in_addr inputAddress;
+    inputAddress.s_addr = fInputAddressStr == NULL ? 0 : our_inet_addr(fInputAddressStr);
+    fInputGroupsock = new Groupsock(envir(), inputAddress, fInputPort, 255);
+  }
+
+  FramedSource* transportStreamSource;
+  if (fInputStreamIsRawUDP) {
+    transportStreamSource = BasicUDPSource::createNew(envir(), fInputGroupsock);
+  } else {
+    transportStreamSource = SimpleRTPSource::createNew(envir(), fInputGroupsock, 33, 90000, "video/MP2T", 0, False /*no 'M' bit*/);
+  }
+  return MPEG2TransportStreamFramer::createNew(envir(), transportStreamSource);
+}
+
+RTPSink* MPEG2TransportUDPServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock, unsigned char /*rtpPayloadTypeIfDynamic*/, FramedSource* /*inputSource*/) {
+  return SimpleRTPSink::createNew(envir(), rtpGroupsock,
+				  33, 90000, "video", "MP2T",
+				  1, True, False /*no 'M' bit*/);
+}
diff --git a/liveMedia/MPEG4ESVideoRTPSink.cpp b/liveMedia/MPEG4ESVideoRTPSink.cpp
new file mode 100644
index 0000000..26fe61a
--- /dev/null
+++ b/liveMedia/MPEG4ESVideoRTPSink.cpp
@@ -0,0 +1,142 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for MPEG-4 Elementary Stream video (RFC 3016)
+// Implementation
+
+#include "MPEG4ESVideoRTPSink.hh"
+#include "MPEG4VideoStreamFramer.hh"
+#include "MPEG4LATMAudioRTPSource.hh" // for "parseGeneralConfigStr()"
+
+MPEG4ESVideoRTPSink
+::MPEG4ESVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
+		      u_int8_t profileAndLevelIndication, char const* configStr)
+  : VideoRTPSink(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency, "MP4V-ES"),
+    fVOPIsPresent(False), fProfileAndLevelIndication(profileAndLevelIndication), fFmtpSDPLine(NULL) {
+  fConfigBytes = parseGeneralConfigStr(configStr, fNumConfigBytes);
+}
+
+MPEG4ESVideoRTPSink::~MPEG4ESVideoRTPSink() {
+  delete[] fFmtpSDPLine;
+  delete[] fConfigBytes;
+}
+
+MPEG4ESVideoRTPSink*
+MPEG4ESVideoRTPSink::createNew(UsageEnvironment& env,
+			       Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+			       u_int32_t rtpTimestampFrequency) {
+  return new MPEG4ESVideoRTPSink(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency);
+}
+
+MPEG4ESVideoRTPSink*
+MPEG4ESVideoRTPSink::createNew(UsageEnvironment& env,
+			       Groupsock* RTPgs, unsigned char rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
+			       u_int8_t profileAndLevelIndication, char const* configStr) {
+  return new MPEG4ESVideoRTPSink(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency, profileAndLevelIndication, configStr);
+}
+
+Boolean MPEG4ESVideoRTPSink::sourceIsCompatibleWithUs(MediaSource& source) {
+  // Our source must be an appropriate framer:
+  return source.isMPEG4VideoStreamFramer();
+}
+
+#define VOP_START_CODE                    0x000001B6
+
+void MPEG4ESVideoRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* frameStart,
+			 unsigned numBytesInFrame,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  if (fragmentationOffset == 0) {
+    // Begin by inspecting the 4-byte code at the start of the frame:
+    if (numBytesInFrame < 4) return; // shouldn't happen
+    u_int32_t startCode
+      = (frameStart[0]<<24) | (frameStart[1]<<16) | (frameStart[2]<<8) | frameStart[3];
+
+    fVOPIsPresent = startCode == VOP_START_CODE;
+  }
+
+  // Set the RTP 'M' (marker) bit iff this frame ends a VOP
+  // (and there are no fragments remaining).
+  // This relies on the source being a "MPEG4VideoStreamFramer".
+  MPEG4VideoStreamFramer* framerSource = (MPEG4VideoStreamFramer*)fSource;
+  if (framerSource != NULL && framerSource->pictureEndMarker()
+      && numRemainingBytes == 0) {
+    setMarkerBit();
+    framerSource->pictureEndMarker() = False;
+  }
+
+  // Also set the RTP timestamp.  (We do this for each frame
+  // in the packet, to ensure that the timestamp of the VOP (if present)
+  // gets used.)
+  setTimestamp(framePresentationTime);
+}
+
+Boolean MPEG4ESVideoRTPSink::allowFragmentationAfterStart() const {
+  return True;
+}
+
+Boolean MPEG4ESVideoRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+				 unsigned /*numBytesInFrame*/) const {
+  // Once we've packed a VOP into the packet, then no other
+  // frame can be packed into it:
+  return !fVOPIsPresent;
+}
+
+char const* MPEG4ESVideoRTPSink::auxSDPLine() {
+  // Generate a new "a=fmtp:" line each time, using our own 'configuration' information (if we have it),
+  // otherwise parameters from our framer source (in case they've changed since the last time that
+  // we were called):
+  unsigned configLength = fNumConfigBytes;
+  unsigned char* config = fConfigBytes;
+  if (fProfileAndLevelIndication == 0 || config == NULL) {
+    // We need to get this information from our framer source:
+    MPEG4VideoStreamFramer* framerSource = (MPEG4VideoStreamFramer*)fSource;
+    if (framerSource == NULL) return NULL; // we don't yet have a source
+
+    fProfileAndLevelIndication = framerSource->profile_and_level_indication();
+    if (fProfileAndLevelIndication == 0) return NULL; // our source isn't ready
+
+    config = framerSource->getConfigBytes(configLength);
+    if (config == NULL) return NULL; // our source isn't ready
+  }
+
+  char const* fmtpFmt =
+    "a=fmtp:%d "
+    "profile-level-id=%d;"
+    "config=";
+  unsigned fmtpFmtSize = strlen(fmtpFmt)
+    + 3 /* max char len */
+    + 3 /* max char len */
+    + 2*configLength /* 2*, because each byte prints as 2 chars */
+    + 2 /* trailing \r\n */;
+  char* fmtp = new char[fmtpFmtSize];
+  sprintf(fmtp, fmtpFmt, rtpPayloadType(), fProfileAndLevelIndication);
+  char* endPtr = &fmtp[strlen(fmtp)];
+  for (unsigned i = 0; i < configLength; ++i) {
+    sprintf(endPtr, "%02X", config[i]);
+    endPtr += 2;
+  }
+  sprintf(endPtr, "\r\n");
+
+  delete[] fFmtpSDPLine;
+  fFmtpSDPLine = strDup(fmtp);
+  delete[] fmtp;
+  return fFmtpSDPLine;
+}
diff --git a/liveMedia/MPEG4ESVideoRTPSource.cpp b/liveMedia/MPEG4ESVideoRTPSource.cpp
new file mode 100644
index 0000000..9402397
--- /dev/null
+++ b/liveMedia/MPEG4ESVideoRTPSource.cpp
@@ -0,0 +1,65 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP4V-ES video RTP stream sources
+// Implementation
+
+#include "MPEG4ESVideoRTPSource.hh"
+
+///////// MPEG4ESVideoRTPSource implementation ////////
+
+//##### NOTE: INCOMPLETE!!! #####
+
+MPEG4ESVideoRTPSource*
+MPEG4ESVideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				   unsigned char rtpPayloadFormat,
+				   unsigned rtpTimestampFrequency) {
+  return new MPEG4ESVideoRTPSource(env, RTPgs, rtpPayloadFormat,
+				   rtpTimestampFrequency);
+}
+
+MPEG4ESVideoRTPSource
+::MPEG4ESVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			unsigned char rtpPayloadFormat,
+			unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs,
+			 rtpPayloadFormat, rtpTimestampFrequency) {
+}
+
+MPEG4ESVideoRTPSource::~MPEG4ESVideoRTPSource() {
+}
+
+Boolean MPEG4ESVideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  // The packet begins a frame iff its data begins with a system code
+  // (i.e., 0x000001??)
+  fCurrentPacketBeginsFrame
+    = packet->dataSize() >= 4 && (packet->data())[0] == 0
+    && (packet->data())[1] == 0 && (packet->data())[2] == 1;
+
+  // The RTP "M" (marker) bit indicates the last fragment of a frame:
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
+
+  // There is no special header
+  resultSpecialHeaderSize = 0;
+  return True;
+}
+
+char const* MPEG4ESVideoRTPSource::MIMEtype() const {
+  return "video/MP4V-ES";
+}
diff --git a/liveMedia/MPEG4GenericRTPSink.cpp b/liveMedia/MPEG4GenericRTPSink.cpp
new file mode 100644
index 0000000..de0e72f
--- /dev/null
+++ b/liveMedia/MPEG4GenericRTPSink.cpp
@@ -0,0 +1,142 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MPEG4-GENERIC ("audio", "video", or "application") RTP stream sinks
+// Implementation
+
+#include "MPEG4GenericRTPSink.hh"
+#include "Locale.hh"
+#include <ctype.h> // needed on some systems to define "tolower()"
+
+MPEG4GenericRTPSink
+::MPEG4GenericRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		      u_int8_t rtpPayloadFormat,
+		      u_int32_t rtpTimestampFrequency,
+		      char const* sdpMediaTypeString,
+		      char const* mpeg4Mode, char const* configString,
+		      unsigned numChannels)
+  : MultiFramedRTPSink(env, RTPgs, rtpPayloadFormat,
+		       rtpTimestampFrequency, "MPEG4-GENERIC", numChannels),
+  fSDPMediaTypeString(strDup(sdpMediaTypeString)),
+  fMPEG4Mode(strDup(mpeg4Mode)), fConfigString(strDup(configString)) {
+  // Check whether "mpeg4Mode" is one that we handle:
+  if (mpeg4Mode == NULL) {
+    env << "MPEG4GenericRTPSink error: NULL \"mpeg4Mode\" parameter\n";
+  } else {
+    // To ease comparison, convert "mpeg4Mode" to lower case:
+    size_t const len = strlen(mpeg4Mode) + 1;
+    char* m = new char[len];
+
+    Locale l("POSIX");
+    for (size_t i = 0; i < len; ++i) m[i] = tolower(mpeg4Mode[i]); 
+
+    if (strcmp(m, "aac-hbr") != 0) {
+      env << "MPEG4GenericRTPSink error: Unknown \"mpeg4Mode\" parameter: \"" << mpeg4Mode << "\"\n";
+    }
+    delete[] m;
+  }
+
+  // Set up the "a=fmtp:" SDP line for this stream:
+  char const* fmtpFmt =
+    "a=fmtp:%d "
+    "streamtype=%d;profile-level-id=1;"
+    "mode=%s;sizelength=13;indexlength=3;indexdeltalength=3;"
+    "config=%s\r\n";
+  unsigned fmtpFmtSize = strlen(fmtpFmt)
+    + 3 /* max char len */
+    + 3 /* max char len */
+    + strlen(fMPEG4Mode)
+    + strlen(fConfigString);
+  char* fmtp = new char[fmtpFmtSize];
+  sprintf(fmtp, fmtpFmt,
+	  rtpPayloadType(),
+	  strcmp(fSDPMediaTypeString, "video") == 0 ? 4 : 5,
+	  fMPEG4Mode,
+	  fConfigString);
+  fFmtpSDPLine = strDup(fmtp);
+  delete[] fmtp;
+}
+
+MPEG4GenericRTPSink::~MPEG4GenericRTPSink() {
+  delete[] fFmtpSDPLine;
+  delete[] (char*)fConfigString;
+  delete[] (char*)fMPEG4Mode;
+  delete[] (char*)fSDPMediaTypeString;
+}
+
+MPEG4GenericRTPSink*
+MPEG4GenericRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			       u_int8_t rtpPayloadFormat,
+			       u_int32_t rtpTimestampFrequency,
+			       char const* sdpMediaTypeString,
+			       char const* mpeg4Mode,
+			       char const* configString, unsigned numChannels) {
+  return new MPEG4GenericRTPSink(env, RTPgs, rtpPayloadFormat,
+				 rtpTimestampFrequency,
+				 sdpMediaTypeString, mpeg4Mode,
+				 configString, numChannels);
+}
+
+Boolean MPEG4GenericRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+                                 unsigned /*numBytesInFrame*/) const {
+  // (For now) allow at most 1 frame in a single packet:
+  return False;
+}
+
+void MPEG4GenericRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* frameStart,
+			 unsigned numBytesInFrame,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  // Set the "AU Header Section".  This is 4 bytes: 2 bytes for the
+  // initial "AU-headers-length" field, and 2 bytes for the first
+  // (and only) "AU Header":
+  unsigned fullFrameSize
+    = fragmentationOffset + numBytesInFrame + numRemainingBytes;
+  unsigned char headers[4];
+  headers[0] = 0; headers[1] = 16 /* bits */; // AU-headers-length
+  headers[2] = fullFrameSize >> 5; headers[3] = (fullFrameSize&0x1F)<<3;
+
+  setSpecialHeaderBytes(headers, sizeof headers);
+
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit:
+    setMarkerBit();
+  }
+
+  // Important: Also call our base class's doSpecialFrameHandling(),
+  // to set the packet's timestamp:
+  MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
+					     frameStart, numBytesInFrame,
+					     framePresentationTime,
+					     numRemainingBytes);
+}
+
+unsigned MPEG4GenericRTPSink::specialHeaderSize() const {
+  return 2 + 2;
+}
+
+char const* MPEG4GenericRTPSink::sdpMediaType() const {
+  return fSDPMediaTypeString;
+}
+
+char const* MPEG4GenericRTPSink::auxSDPLine() {
+  return fFmtpSDPLine;
+}
diff --git a/liveMedia/MPEG4GenericRTPSource.cpp b/liveMedia/MPEG4GenericRTPSource.cpp
new file mode 100644
index 0000000..e10c024
--- /dev/null
+++ b/liveMedia/MPEG4GenericRTPSource.cpp
@@ -0,0 +1,234 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MPEG4-GENERIC ("audio", "video", or "application") RTP stream sources
+// Implementation
+
+#include "MPEG4GenericRTPSource.hh"
+#include "BitVector.hh"
+#include "MPEG4LATMAudioRTPSource.hh" // for parseGeneralConfigStr()
+
+////////// MPEG4GenericBufferedPacket and MPEG4GenericBufferedPacketFactory
+
+class MPEG4GenericBufferedPacket: public BufferedPacket {
+public:
+  MPEG4GenericBufferedPacket(MPEG4GenericRTPSource* ourSource);
+  virtual ~MPEG4GenericBufferedPacket();
+
+private: // redefined virtual functions
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+					 unsigned dataSize);
+private:
+  MPEG4GenericRTPSource* fOurSource;
+};
+
+class MPEG4GenericBufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+
+////////// AUHeader //////////
+struct AUHeader {
+  unsigned size;
+  unsigned index; // indexDelta for the 2nd & subsequent headers
+};
+
+
+///////// MPEG4GenericRTPSource implementation ////////
+
+//##### NOTE: INCOMPLETE!!! Support more modes, and interleaving #####
+
+MPEG4GenericRTPSource*
+MPEG4GenericRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				 unsigned char rtpPayloadFormat,
+				 unsigned rtpTimestampFrequency,
+				 char const* mediumName,
+				 char const* mode,
+				 unsigned sizeLength, unsigned indexLength,
+				 unsigned indexDeltaLength
+				 ) {
+  return new MPEG4GenericRTPSource(env, RTPgs, rtpPayloadFormat,
+				   rtpTimestampFrequency, mediumName,
+				   mode, sizeLength, indexLength,
+				   indexDeltaLength
+				   );
+}
+
+MPEG4GenericRTPSource
+::MPEG4GenericRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			unsigned char rtpPayloadFormat,
+			unsigned rtpTimestampFrequency,
+			char const* mediumName,
+                        char const* mode,
+                        unsigned sizeLength, unsigned indexLength,
+                        unsigned indexDeltaLength
+                        )
+  : MultiFramedRTPSource(env, RTPgs,
+			 rtpPayloadFormat, rtpTimestampFrequency,
+			 new MPEG4GenericBufferedPacketFactory),
+  fSizeLength(sizeLength), fIndexLength(indexLength),
+  fIndexDeltaLength(indexDeltaLength),
+  fNumAUHeaders(0), fNextAUHeader(0), fAUHeaders(NULL) {
+    unsigned mimeTypeLength =
+      strlen(mediumName) + 14 /* strlen("/MPEG4-GENERIC") */ + 1;
+    fMIMEType = new char[mimeTypeLength];
+    if (fMIMEType != NULL) {
+      sprintf(fMIMEType, "%s/MPEG4-GENERIC", mediumName);
+    }
+
+    fMode = strDup(mode);
+    // Check for a "mode" that we don't yet support: //#####
+    if (mode == NULL ||
+	(strcmp(mode, "aac-hbr") != 0 && strcmp(mode, "generic") != 0)) {
+      envir() << "MPEG4GenericRTPSource Warning: Unknown or unsupported \"mode\": "
+	      << mode << "\n";
+    }
+}
+
+MPEG4GenericRTPSource::~MPEG4GenericRTPSource() {
+  delete[] fAUHeaders;
+  delete[] fMode;
+  delete[] fMIMEType;
+}
+
+Boolean MPEG4GenericRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  fCurrentPacketBeginsFrame = fCurrentPacketCompletesFrame;
+          // whether the *previous* packet ended a frame
+
+  // The RTP "M" (marker) bit indicates the last fragment of a frame:
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
+
+  // default values:
+  resultSpecialHeaderSize = 0;
+  fNumAUHeaders = 0;
+  fNextAUHeader = 0;
+  delete[] fAUHeaders; fAUHeaders = NULL;
+
+  if (fSizeLength > 0) {
+    // The packet begins with a "AU Header Section".  Parse it, to
+    // determine the "AU-header"s for each frame present in this packet:
+    resultSpecialHeaderSize += 2;
+    if (packetSize < resultSpecialHeaderSize) return False;
+
+    unsigned AU_headers_length = (headerStart[0]<<8)|headerStart[1];
+    unsigned AU_headers_length_bytes = (AU_headers_length+7)/8;
+    if (packetSize
+	< resultSpecialHeaderSize + AU_headers_length_bytes) return False;
+    resultSpecialHeaderSize += AU_headers_length_bytes;
+
+    // Figure out how many AU-headers are present in the packet:
+    int bitsAvail = AU_headers_length - (fSizeLength + fIndexLength);
+    if (bitsAvail >= 0 && (fSizeLength + fIndexDeltaLength) > 0) {
+      fNumAUHeaders = 1 + bitsAvail/(fSizeLength + fIndexDeltaLength);
+    }
+    if (fNumAUHeaders > 0) {
+      fAUHeaders = new AUHeader[fNumAUHeaders];
+      // Fill in each header:
+      BitVector bv(&headerStart[2], 0, AU_headers_length);
+      fAUHeaders[0].size = bv.getBits(fSizeLength);
+      fAUHeaders[0].index = bv.getBits(fIndexLength);
+
+      for (unsigned i = 1; i < fNumAUHeaders; ++i) {
+	fAUHeaders[i].size = bv.getBits(fSizeLength);
+	fAUHeaders[i].index = bv.getBits(fIndexDeltaLength);
+      }
+    }
+
+  }
+
+  return True;
+}
+
+char const* MPEG4GenericRTPSource::MIMEtype() const {
+  return fMIMEType;
+}
+
+
+////////// MPEG4GenericBufferedPacket
+////////// and MPEG4GenericBufferedPacketFactory implementation
+
+MPEG4GenericBufferedPacket
+::MPEG4GenericBufferedPacket(MPEG4GenericRTPSource* ourSource)
+  : fOurSource(ourSource) {
+}
+
+MPEG4GenericBufferedPacket::~MPEG4GenericBufferedPacket() {
+}
+
+unsigned MPEG4GenericBufferedPacket
+::nextEnclosedFrameSize(unsigned char*& /*framePtr*/, unsigned dataSize) {
+  // WE CURRENTLY DON'T IMPLEMENT INTERLEAVING.  FIX THIS! #####
+  AUHeader* auHeader = fOurSource->fAUHeaders;
+  if (auHeader == NULL) return dataSize;
+  unsigned numAUHeaders = fOurSource->fNumAUHeaders;
+
+  if (fOurSource->fNextAUHeader >= numAUHeaders) {
+    fOurSource->envir() << "MPEG4GenericBufferedPacket::nextEnclosedFrameSize("
+			<< dataSize << "): data error ("
+			<< auHeader << "," << fOurSource->fNextAUHeader
+			<< "," << numAUHeaders << ")!\n";
+    return dataSize;
+  }
+
+  auHeader = &auHeader[fOurSource->fNextAUHeader++];
+  return auHeader->size <= dataSize ? auHeader->size : dataSize;
+}
+
+BufferedPacket* MPEG4GenericBufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* ourSource) {
+  return new MPEG4GenericBufferedPacket((MPEG4GenericRTPSource*)ourSource);
+}
+
+
+////////// samplingFrequencyFromAudioSpecificConfig() implementation //////////
+
+static unsigned const samplingFrequencyFromIndex[16] = {
+  96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
+  16000, 12000, 11025, 8000, 7350, 0, 0, 0
+};
+
+unsigned samplingFrequencyFromAudioSpecificConfig(char const* configStr) {
+  unsigned char* config = NULL;
+  unsigned result = 0; // if returned, indicates an error
+
+  do {
+    // Begin by parsing the config string:
+    unsigned configSize;
+    config = parseGeneralConfigStr(configStr, configSize);
+    if (config == NULL) break;
+
+    if (configSize < 2) break;
+    unsigned char samplingFrequencyIndex = ((config[0]&0x07)<<1) | (config[1]>>7);
+    if (samplingFrequencyIndex < 15) {
+      result = samplingFrequencyFromIndex[samplingFrequencyIndex];
+      break;
+    }
+
+    // Index == 15 means that the actual frequency is next (24 bits):
+    if (configSize < 5) break;
+    result = ((config[1]&0x7F)<<17) | (config[2]<<9) | (config[3]<<1) | (config[4]>>7);
+  } while (0);
+
+  delete[] config;
+  return result;
+}
diff --git a/liveMedia/MPEG4LATMAudioRTPSink.cpp b/liveMedia/MPEG4LATMAudioRTPSink.cpp
new file mode 100644
index 0000000..f033dd3
--- /dev/null
+++ b/liveMedia/MPEG4LATMAudioRTPSink.cpp
@@ -0,0 +1,95 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for MPEG-4 audio, using LATM multiplexing (RFC 3016)
+// Implementation
+
+#include "MPEG4LATMAudioRTPSink.hh"
+
+MPEG4LATMAudioRTPSink
+::MPEG4LATMAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+			u_int8_t rtpPayloadFormat,
+			u_int32_t rtpTimestampFrequency,
+			char const* streamMuxConfigString,
+			unsigned numChannels,
+			Boolean allowMultipleFramesPerPacket)
+  : AudioRTPSink(env, RTPgs, rtpPayloadFormat,
+		 rtpTimestampFrequency, "MP4A-LATM", numChannels),
+  fStreamMuxConfigString(strDup(streamMuxConfigString)),
+  fAllowMultipleFramesPerPacket(allowMultipleFramesPerPacket) {
+  // Set up the "a=fmtp:" SDP line for this stream:
+  char const* fmtpFmt =
+    "a=fmtp:%d "
+    "cpresent=0;config=%s\r\n";
+  unsigned fmtpFmtSize = strlen(fmtpFmt)
+    + 3 /* max char len */
+    + strlen(fStreamMuxConfigString);
+  char* fmtp = new char[fmtpFmtSize];
+  sprintf(fmtp, fmtpFmt,
+	  rtpPayloadType(),
+	  fStreamMuxConfigString);
+  fFmtpSDPLine = strDup(fmtp);
+  delete[] fmtp;
+}
+
+MPEG4LATMAudioRTPSink::~MPEG4LATMAudioRTPSink() {
+  delete[] fFmtpSDPLine;
+  delete[] (char*)fStreamMuxConfigString;
+}
+
+MPEG4LATMAudioRTPSink*
+MPEG4LATMAudioRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				 u_int8_t rtpPayloadFormat,
+				 u_int32_t rtpTimestampFrequency,
+				 char const* streamMuxConfigString,
+				 unsigned numChannels,
+				 Boolean allowMultipleFramesPerPacket) {
+  return new MPEG4LATMAudioRTPSink(env, RTPgs, rtpPayloadFormat,
+				   rtpTimestampFrequency, streamMuxConfigString,
+				   numChannels,
+				   allowMultipleFramesPerPacket);
+}
+
+Boolean MPEG4LATMAudioRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+                                 unsigned /*numBytesInFrame*/) const {
+  return fAllowMultipleFramesPerPacket;
+}
+
+void MPEG4LATMAudioRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* frameStart,
+			 unsigned numBytesInFrame,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit:
+    setMarkerBit();
+  }
+
+  // Important: Also call our base class's doSpecialFrameHandling(),
+  // to set the packet's timestamp:
+  MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
+					     frameStart, numBytesInFrame,
+					     framePresentationTime,
+					     numRemainingBytes);
+}
+
+char const* MPEG4LATMAudioRTPSink::auxSDPLine() {
+  return fFmtpSDPLine;
+}
diff --git a/liveMedia/MPEG4LATMAudioRTPSource.cpp b/liveMedia/MPEG4LATMAudioRTPSource.cpp
new file mode 100644
index 0000000..d0b6c60
--- /dev/null
+++ b/liveMedia/MPEG4LATMAudioRTPSource.cpp
@@ -0,0 +1,264 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MPEG-4 audio, using LATM multiplexing
+// Implementation
+
+#include "MPEG4LATMAudioRTPSource.hh"
+
+////////// LATMBufferedPacket and LATMBufferedPacketFactory //////////
+
+class LATMBufferedPacket: public BufferedPacket {
+public:
+  LATMBufferedPacket(Boolean includeLATMDataLengthField);
+  virtual ~LATMBufferedPacket();
+
+private: // redefined virtual functions
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+                                 unsigned dataSize);
+
+private:
+  Boolean fIncludeLATMDataLengthField;
+};
+
+class LATMBufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+///////// MPEG4LATMAudioRTPSource implementation ////////
+
+MPEG4LATMAudioRTPSource*
+MPEG4LATMAudioRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				   unsigned char rtpPayloadFormat,
+				   unsigned rtpTimestampFrequency) {
+  return new MPEG4LATMAudioRTPSource(env, RTPgs, rtpPayloadFormat,
+				     rtpTimestampFrequency);
+}
+
+MPEG4LATMAudioRTPSource
+::MPEG4LATMAudioRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			  unsigned char rtpPayloadFormat,
+			  unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs,
+			 rtpPayloadFormat, rtpTimestampFrequency,
+			 new LATMBufferedPacketFactory),
+    fIncludeLATMDataLengthField(True) {
+}
+
+MPEG4LATMAudioRTPSource::~MPEG4LATMAudioRTPSource() {
+}
+
+void MPEG4LATMAudioRTPSource::omitLATMDataLengthField() {
+  fIncludeLATMDataLengthField = False;
+}
+
+Boolean MPEG4LATMAudioRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  fCurrentPacketBeginsFrame = fCurrentPacketCompletesFrame;
+          // whether the *previous* packet ended a frame
+
+  // The RTP "M" (marker) bit indicates the last fragment of a frame:
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
+
+  // There is no special header
+  resultSpecialHeaderSize = 0;
+  return True;
+}
+
+char const* MPEG4LATMAudioRTPSource::MIMEtype() const {
+  return "audio/MP4A-LATM";
+}
+
+
+////////// LATMBufferedPacket and LATMBufferedPacketFactory implementation
+
+LATMBufferedPacket::LATMBufferedPacket(Boolean includeLATMDataLengthField)
+  : fIncludeLATMDataLengthField(includeLATMDataLengthField) {
+}
+
+LATMBufferedPacket::~LATMBufferedPacket() {
+}
+
+unsigned LATMBufferedPacket
+::nextEnclosedFrameSize(unsigned char*& framePtr, unsigned dataSize) {
+  // Look at the LATM data length byte(s), to determine the size
+  // of the LATM payload.
+  unsigned resultFrameSize = 0;
+  unsigned i;
+  for (i = 0; i < dataSize; ++i) {
+    resultFrameSize += framePtr[i];
+    if (framePtr[i] != 0xFF) break;
+  }
+  ++i;
+  if (fIncludeLATMDataLengthField) {
+    resultFrameSize += i;
+  } else {
+    framePtr += i;
+    dataSize -= i;
+  }
+
+  return (resultFrameSize <= dataSize) ? resultFrameSize : dataSize;
+}
+
+BufferedPacket* LATMBufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* ourSource) {
+  MPEG4LATMAudioRTPSource* source = (MPEG4LATMAudioRTPSource*)ourSource;
+  return new LATMBufferedPacket(source->returnedFrameIncludesLATMDataLengthField());
+}
+
+
+////////// parseStreamMuxConfigStr() implementation //////////
+
+static Boolean getNibble(char const*& configStr,
+			 unsigned char& resultNibble) {
+  char c = configStr[0];
+  if (c == '\0') return False; // we've reached the end
+
+  if (c >= '0' && c <= '9') {
+    resultNibble = c - '0';
+  } else if (c >= 'A' && c <= 'F') {
+    resultNibble = 10 + c - 'A';
+  } else if (c >= 'a' && c <= 'f') {
+    resultNibble = 10 + c - 'a';
+  } else {
+    return False;
+  }
+
+  ++configStr; // move to the next nibble
+  return True;
+}
+
+static Boolean getByte(char const*& configStr, unsigned char& resultByte) {
+  resultByte = 0; // by default, in case parsing fails
+
+  unsigned char firstNibble;
+  if (!getNibble(configStr, firstNibble)) return False;
+  resultByte = firstNibble<<4;
+
+  unsigned char secondNibble = 0;
+  if (!getNibble(configStr, secondNibble) && configStr[0] != '\0') {
+    // There's a second nibble, but it's malformed
+    return False;
+  }
+  resultByte |= secondNibble;
+
+  return True;
+}
+
+Boolean
+parseStreamMuxConfigStr(char const* configStr,
+                        // result parameters:
+                        Boolean& audioMuxVersion,
+                        Boolean& allStreamsSameTimeFraming,
+                        unsigned char& numSubFrames,
+                        unsigned char& numProgram,
+                        unsigned char& numLayer,
+                        unsigned char*& audioSpecificConfig,
+                        unsigned& audioSpecificConfigSize) {
+  // Set default versions of the result parameters:
+  audioMuxVersion = False;
+  allStreamsSameTimeFraming = True;
+  numSubFrames = numProgram = numLayer = 0;
+  audioSpecificConfig = NULL;
+  audioSpecificConfigSize = 0;
+
+  do {
+    if (configStr == NULL) break;
+
+    unsigned char nextByte;
+
+    if (!getByte(configStr, nextByte)) break;
+    audioMuxVersion = (nextByte&0x80) != 0;
+    if (audioMuxVersion) break;
+
+    allStreamsSameTimeFraming = ((nextByte&0x40)>>6) != 0;
+    numSubFrames = (nextByte&0x3F);
+
+    if (!getByte(configStr, nextByte)) break;
+    numProgram = (nextByte&0xF0)>>4;
+
+    numLayer = (nextByte&0x0E)>>1;
+
+    // The one remaining bit, and the rest of the string,
+    // are used for "audioSpecificConfig":
+    unsigned char remainingBit = nextByte&1;
+
+    unsigned ascSize = (strlen(configStr)+1)/2 + 1;
+    audioSpecificConfig = new unsigned char[ascSize];
+
+    Boolean parseSuccess;
+    unsigned i = 0;
+    do {
+      nextByte = 0;
+      parseSuccess = getByte(configStr, nextByte);
+      audioSpecificConfig[i++] = (remainingBit<<7)|((nextByte&0xFE)>>1);
+      remainingBit = nextByte&1;
+    } while (parseSuccess);
+    if (i != ascSize) break; // part of the remaining string was bad
+
+    audioSpecificConfigSize = ascSize;
+    return True; // parsing succeeded
+  } while (0);
+
+  delete[] audioSpecificConfig;
+  return False; // parsing failed
+}
+
+unsigned char* parseStreamMuxConfigStr(char const* configStr,
+				       // result parameter:
+				       unsigned& audioSpecificConfigSize) {
+  Boolean audioMuxVersion, allStreamsSameTimeFraming;
+  unsigned char numSubFrames, numProgram, numLayer;
+  unsigned char* audioSpecificConfig;
+
+  if (!parseStreamMuxConfigStr(configStr,
+			       audioMuxVersion, allStreamsSameTimeFraming,
+			       numSubFrames, numProgram, numLayer,
+			       audioSpecificConfig, audioSpecificConfigSize)) {
+    audioSpecificConfigSize = 0;
+    return NULL;
+  }
+
+  return audioSpecificConfig;
+}
+
+unsigned char* parseGeneralConfigStr(char const* configStr,
+				     // result parameter:
+				     unsigned& configSize) {
+  unsigned char* config = NULL;
+  do {
+    if (configStr == NULL) break;
+    configSize = (strlen(configStr)+1)/2;
+
+    config = new unsigned char[configSize];
+    if (config == NULL) break;
+
+    unsigned i;
+    for (i = 0; i < configSize; ++i) {
+      if (!getByte(configStr, config[i])) break;
+    }
+    if (i != configSize) break; // part of the string was bad
+
+    return config;
+  } while (0);
+
+  configSize = 0;
+  delete[] config;
+  return NULL;
+}
diff --git a/liveMedia/MPEG4VideoFileServerMediaSubsession.cpp b/liveMedia/MPEG4VideoFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..d02f732
--- /dev/null
+++ b/liveMedia/MPEG4VideoFileServerMediaSubsession.cpp
@@ -0,0 +1,126 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a MPEG-4 video file.
+// Implementation
+
+#include "MPEG4VideoFileServerMediaSubsession.hh"
+#include "MPEG4ESVideoRTPSink.hh"
+#include "ByteStreamFileSource.hh"
+#include "MPEG4VideoStreamFramer.hh"
+
+MPEG4VideoFileServerMediaSubsession*
+MPEG4VideoFileServerMediaSubsession::createNew(UsageEnvironment& env,
+					       char const* fileName,
+					       Boolean reuseFirstSource) {
+  return new MPEG4VideoFileServerMediaSubsession(env, fileName, reuseFirstSource);
+}
+
+MPEG4VideoFileServerMediaSubsession
+::MPEG4VideoFileServerMediaSubsession(UsageEnvironment& env,
+                                      char const* fileName, Boolean reuseFirstSource)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource),
+    fAuxSDPLine(NULL), fDoneFlag(0), fDummyRTPSink(NULL) {
+}
+
+MPEG4VideoFileServerMediaSubsession::~MPEG4VideoFileServerMediaSubsession() {
+  delete[] fAuxSDPLine;
+}
+
+static void afterPlayingDummy(void* clientData) {
+  MPEG4VideoFileServerMediaSubsession* subsess
+    = (MPEG4VideoFileServerMediaSubsession*)clientData;
+  subsess->afterPlayingDummy1();
+}
+
+void MPEG4VideoFileServerMediaSubsession::afterPlayingDummy1() {
+  // Unschedule any pending 'checking' task:
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+  // Signal the event loop that we're done:
+  setDoneFlag();
+}
+
+static void checkForAuxSDPLine(void* clientData) {
+  MPEG4VideoFileServerMediaSubsession* subsess
+    = (MPEG4VideoFileServerMediaSubsession*)clientData;
+  subsess->checkForAuxSDPLine1();
+}
+
+void MPEG4VideoFileServerMediaSubsession::checkForAuxSDPLine1() {
+  nextTask() = NULL;
+
+  char const* dasl;
+  if (fAuxSDPLine != NULL) {
+    // Signal the event loop that we're done:
+    setDoneFlag();
+  } else if (fDummyRTPSink != NULL && (dasl = fDummyRTPSink->auxSDPLine()) != NULL) {
+    fAuxSDPLine= strDup(dasl);
+    fDummyRTPSink = NULL;
+
+    // Signal the event loop that we're done:
+    setDoneFlag();
+  } else if (!fDoneFlag) {
+    // try again after a brief delay:
+    int uSecsToDelay = 100000; // 100 ms
+    nextTask() = envir().taskScheduler().scheduleDelayedTask(uSecsToDelay,
+			      (TaskFunc*)checkForAuxSDPLine, this);
+  }
+}
+
+char const* MPEG4VideoFileServerMediaSubsession::getAuxSDPLine(RTPSink* rtpSink, FramedSource* inputSource) {
+  if (fAuxSDPLine != NULL) return fAuxSDPLine; // it's already been set up (for a previous client)
+
+  if (fDummyRTPSink == NULL) { // we're not already setting it up for another, concurrent stream
+    // Note: For MPEG-4 video files, the 'config' information isn't known
+    // until we start reading the file.  This means that "rtpSink"s
+    // "auxSDPLine()" will be NULL initially, and we need to start reading data from our file until this changes.
+    fDummyRTPSink = rtpSink;
+
+    // Start reading the file:
+    fDummyRTPSink->startPlaying(*inputSource, afterPlayingDummy, this);
+
+    // Check whether the sink's 'auxSDPLine()' is ready:
+    checkForAuxSDPLine(this);
+  }
+
+  envir().taskScheduler().doEventLoop(&fDoneFlag);
+
+  return fAuxSDPLine;
+}
+
+FramedSource* MPEG4VideoFileServerMediaSubsession
+::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  estBitrate = 500; // kbps, estimate
+
+  // Create the video source:
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(envir(), fFileName);
+  if (fileSource == NULL) return NULL;
+  fFileSize = fileSource->fileSize();
+
+  // Create a framer for the Video Elementary Stream:
+  return MPEG4VideoStreamFramer::createNew(envir(), fileSource);
+}
+
+RTPSink* MPEG4VideoFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock,
+		   unsigned char rtpPayloadTypeIfDynamic,
+		   FramedSource* /*inputSource*/) {
+  return MPEG4ESVideoRTPSink::createNew(envir(), rtpGroupsock,
+					rtpPayloadTypeIfDynamic);
+}
diff --git a/liveMedia/MPEG4VideoStreamDiscreteFramer.cpp b/liveMedia/MPEG4VideoStreamDiscreteFramer.cpp
new file mode 100644
index 0000000..3988f44
--- /dev/null
+++ b/liveMedia/MPEG4VideoStreamDiscreteFramer.cpp
@@ -0,0 +1,252 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simplified version of "MPEG4VideoStreamFramer" that takes only complete,
+// discrete frames (rather than an arbitrary byte stream) as input.
+// This avoids the parsing and data copying overhead of the full
+// "MPEG4VideoStreamFramer".
+// Implementation
+
+#include "MPEG4VideoStreamDiscreteFramer.hh"
+
+MPEG4VideoStreamDiscreteFramer*
+MPEG4VideoStreamDiscreteFramer::createNew(UsageEnvironment& env,
+				  FramedSource* inputSource, Boolean leavePresentationTimesUnmodified) {
+  // Need to add source type checking here???  #####
+  return new MPEG4VideoStreamDiscreteFramer(env, inputSource, leavePresentationTimesUnmodified);
+}
+
+MPEG4VideoStreamDiscreteFramer
+::MPEG4VideoStreamDiscreteFramer(UsageEnvironment& env,
+				 FramedSource* inputSource, Boolean leavePresentationTimesUnmodified)
+  : MPEG4VideoStreamFramer(env, inputSource, False/*don't create a parser*/),
+    fLeavePresentationTimesUnmodified(leavePresentationTimesUnmodified), vop_time_increment_resolution(0), fNumVTIRBits(0),
+    fLastNonBFrameVop_time_increment(0) {
+  fLastNonBFramePresentationTime.tv_sec = 0;
+  fLastNonBFramePresentationTime.tv_usec = 0;
+}
+
+MPEG4VideoStreamDiscreteFramer::~MPEG4VideoStreamDiscreteFramer() {
+}
+
+void MPEG4VideoStreamDiscreteFramer::doGetNextFrame() {
+  // Arrange to read data (which should be a complete MPEG-4 video frame)
+  // from our data source, directly into the client's input buffer.
+  // After reading this, we'll do some parsing on the frame.
+  fInputSource->getNextFrame(fTo, fMaxSize,
+                             afterGettingFrame, this,
+                             FramedSource::handleClosure, this);
+}
+
+void MPEG4VideoStreamDiscreteFramer
+::afterGettingFrame(void* clientData, unsigned frameSize,
+                    unsigned numTruncatedBytes,
+                    struct timeval presentationTime,
+                    unsigned durationInMicroseconds) {
+  MPEG4VideoStreamDiscreteFramer* source = (MPEG4VideoStreamDiscreteFramer*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes,
+                             presentationTime, durationInMicroseconds);
+}
+
+void MPEG4VideoStreamDiscreteFramer
+::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+                     struct timeval presentationTime,
+                     unsigned durationInMicroseconds) {
+  // Check that the first 4 bytes are a system code:
+  if (frameSize >= 4 && fTo[0] == 0 && fTo[1] == 0 && fTo[2] == 1) {
+    fPictureEndMarker = True; // Assume that we have a complete 'picture' here
+    unsigned i = 3;
+    if (fTo[i] == 0xB0) { // VISUAL_OBJECT_SEQUENCE_START_CODE
+      // The next byte is the "profile_and_level_indication":
+      if (frameSize >= 5) fProfileAndLevelIndication = fTo[4];
+
+      // The start of this frame - up to the first GROUP_VOP_START_CODE
+      // or VOP_START_CODE - is stream configuration information.  Save this:
+      for (i = 7; i < frameSize; ++i) {
+	if ((fTo[i] == 0xB3 /*GROUP_VOP_START_CODE*/ ||
+	     fTo[i] == 0xB6 /*VOP_START_CODE*/)
+	    && fTo[i-1] == 1 && fTo[i-2] == 0 && fTo[i-3] == 0) {
+	  break; // The configuration information ends here
+	}
+      }
+      fNumConfigBytes = i < frameSize ? i-3 : frameSize;
+      delete[] fConfigBytes; fConfigBytes = new unsigned char[fNumConfigBytes];
+      for (unsigned j = 0; j < fNumConfigBytes; ++j) fConfigBytes[j] = fTo[j];
+
+      // This information (should) also contain a VOL header, which we need
+      // to analyze, to get "vop_time_increment_resolution" (which we need
+      // - along with "vop_time_increment" - in order to generate accurate
+      // presentation times for "B" frames).
+      analyzeVOLHeader();
+    }
+
+    if (i < frameSize) {
+      u_int8_t nextCode = fTo[i];
+
+      if (nextCode == 0xB3 /*GROUP_VOP_START_CODE*/) {
+	// Skip to the following VOP_START_CODE (if any):
+	for (i += 4; i < frameSize; ++i) {
+	  if (fTo[i] == 0xB6 /*VOP_START_CODE*/
+	      && fTo[i-1] == 1 && fTo[i-2] == 0 && fTo[i-3] == 0) {
+	    nextCode = fTo[i];
+	    break;
+	  }
+	}
+      }
+
+      if (nextCode == 0xB6 /*VOP_START_CODE*/ && i+5 < frameSize) {
+	++i;
+
+	// Get the "vop_coding_type" from the next byte:
+	u_int8_t nextByte = fTo[i++];
+	u_int8_t vop_coding_type = nextByte>>6;
+
+	// Next, get the "modulo_time_base" by counting the '1' bits that
+	// follow.  We look at the next 32-bits only.
+	// This should be enough in most cases.
+	u_int32_t next4Bytes
+	  = (fTo[i]<<24)|(fTo[i+1]<<16)|(fTo[i+2]<<8)|fTo[i+3];
+	i += 4;
+	u_int32_t timeInfo = (nextByte<<(32-6))|(next4Bytes>>6);
+	unsigned modulo_time_base = 0;
+	u_int32_t mask = 0x80000000;
+	while ((timeInfo&mask) != 0) {
+	  ++modulo_time_base;
+	  mask >>= 1;
+	}
+	mask >>= 2;
+
+	// Then, get the "vop_time_increment".
+	unsigned vop_time_increment = 0;
+	// First, make sure we have enough bits left for this:
+	if ((mask>>(fNumVTIRBits-1)) != 0) {
+	  for (unsigned i = 0; i < fNumVTIRBits; ++i) {
+	    vop_time_increment |= timeInfo&mask;
+	    mask >>= 1;
+	  }
+	  while (mask != 0) {
+	    vop_time_increment >>= 1;
+	    mask >>= 1;
+	  }
+	}
+
+	// If this is a "B" frame, then we have to tweak "presentationTime":
+	if (!fLeavePresentationTimesUnmodified && vop_coding_type == 2/*B*/
+	    && (fLastNonBFramePresentationTime.tv_usec > 0 ||
+		fLastNonBFramePresentationTime.tv_sec > 0)) {
+	  int timeIncrement
+	    = fLastNonBFrameVop_time_increment - vop_time_increment;
+	  if (timeIncrement<0) timeIncrement += vop_time_increment_resolution;
+	  unsigned const MILLION = 1000000;
+	  double usIncrement = vop_time_increment_resolution == 0 ? 0.0
+	    : ((double)timeIncrement*MILLION)/vop_time_increment_resolution;
+	  unsigned secondsToSubtract = (unsigned)(usIncrement/MILLION);
+	  unsigned uSecondsToSubtract = ((unsigned)usIncrement)%MILLION;
+
+	  presentationTime = fLastNonBFramePresentationTime;
+	  if ((unsigned)presentationTime.tv_usec < uSecondsToSubtract) {
+	    presentationTime.tv_usec += MILLION;
+	    if (presentationTime.tv_sec > 0) --presentationTime.tv_sec;
+	  }
+	  presentationTime.tv_usec -= uSecondsToSubtract;
+	  if ((unsigned)presentationTime.tv_sec > secondsToSubtract) {
+	    presentationTime.tv_sec -= secondsToSubtract;
+	  } else {
+	    presentationTime.tv_sec = presentationTime.tv_usec = 0;
+	  }
+	} else {
+	  fLastNonBFramePresentationTime = presentationTime;
+	  fLastNonBFrameVop_time_increment = vop_time_increment;
+	}
+      }
+    }
+  }
+
+  // Complete delivery to the client:
+  fFrameSize = frameSize;
+  fNumTruncatedBytes = numTruncatedBytes;
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+  afterGetting(this);
+}
+
+Boolean MPEG4VideoStreamDiscreteFramer::getNextFrameBit(u_int8_t& result) {
+  if (fNumBitsSeenSoFar/8 >= fNumConfigBytes) return False;
+
+  u_int8_t nextByte = fConfigBytes[fNumBitsSeenSoFar/8];
+  result = (nextByte>>(7-fNumBitsSeenSoFar%8))&1;
+  ++fNumBitsSeenSoFar;
+  return True;
+}
+
+Boolean MPEG4VideoStreamDiscreteFramer::getNextFrameBits(unsigned numBits,
+							 u_int32_t& result) {
+  result = 0;
+  for (unsigned i = 0; i < numBits; ++i) {
+    u_int8_t nextBit;
+    if (!getNextFrameBit(nextBit)) return False;
+    result = (result<<1)|nextBit;
+  }
+  return True;
+}
+
+void MPEG4VideoStreamDiscreteFramer::analyzeVOLHeader() {
+  // Begin by moving to the VOL header:
+  unsigned i;
+  for (i = 3; i < fNumConfigBytes; ++i) {
+    if (fConfigBytes[i] >= 0x20 && fConfigBytes[i] <= 0x2F
+	&& fConfigBytes[i-1] == 1
+	&& fConfigBytes[i-2] == 0 && fConfigBytes[i-3] == 0) {
+      ++i;
+      break;
+    }
+  }
+
+  fNumBitsSeenSoFar = 8*i + 9;
+  do {
+    u_int8_t is_object_layer_identifier;
+    if (!getNextFrameBit(is_object_layer_identifier)) break;
+    if (is_object_layer_identifier) fNumBitsSeenSoFar += 7;
+
+    u_int32_t aspect_ratio_info;
+    if (!getNextFrameBits(4, aspect_ratio_info)) break;
+    if (aspect_ratio_info == 15 /*extended_PAR*/) fNumBitsSeenSoFar += 16;
+
+    u_int8_t vol_control_parameters;
+    if (!getNextFrameBit(vol_control_parameters)) break;
+    if (vol_control_parameters) {
+      fNumBitsSeenSoFar += 3; // chroma_format; low_delay
+      u_int8_t vbw_parameters;
+      if (!getNextFrameBit(vbw_parameters)) break;
+      if (vbw_parameters) fNumBitsSeenSoFar += 79;
+    }
+
+    fNumBitsSeenSoFar += 2; // video_object_layer_shape
+    u_int8_t marker_bit;
+    if (!getNextFrameBit(marker_bit)) break;
+    if (marker_bit != 1) break; // sanity check
+
+    if (!getNextFrameBits(16, vop_time_increment_resolution)) break;
+    if (vop_time_increment_resolution == 0) break; // shouldn't happen
+
+    // Compute how many bits are necessary to represent this:
+    fNumVTIRBits = 0;
+    for (unsigned test = vop_time_increment_resolution; test>0; test /= 2) {
+      ++fNumVTIRBits;
+    }
+  } while (0);
+}
diff --git a/liveMedia/MPEG4VideoStreamFramer.cpp b/liveMedia/MPEG4VideoStreamFramer.cpp
new file mode 100644
index 0000000..972c6a6
--- /dev/null
+++ b/liveMedia/MPEG4VideoStreamFramer.cpp
@@ -0,0 +1,681 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an MPEG-4 video elementary stream into
+//   frames for:
+// - Visual Object Sequence (VS) Header + Visual Object (VO) Header
+//   + Video Object Layer (VOL) Header
+// - Group of VOP (GOV) Header
+// - VOP frame
+// Implementation
+
+#include "MPEG4VideoStreamFramer.hh"
+#include "MPEGVideoStreamParser.hh"
+#include "MPEG4LATMAudioRTPSource.hh" // for "parseGeneralConfigStr()"
+#include <string.h>
+
+////////// MPEG4VideoStreamParser definition //////////
+
+// An enum representing the current state of the parser:
+enum MPEGParseState {
+  PARSING_VISUAL_OBJECT_SEQUENCE,
+  PARSING_VISUAL_OBJECT_SEQUENCE_SEEN_CODE,
+  PARSING_VISUAL_OBJECT,
+  PARSING_VIDEO_OBJECT_LAYER,
+  PARSING_GROUP_OF_VIDEO_OBJECT_PLANE,
+  PARSING_VIDEO_OBJECT_PLANE,
+  PARSING_VISUAL_OBJECT_SEQUENCE_END_CODE
+};
+
+class MPEG4VideoStreamParser: public MPEGVideoStreamParser {
+public:
+  MPEG4VideoStreamParser(MPEG4VideoStreamFramer* usingSource,
+			 FramedSource* inputSource);
+  virtual ~MPEG4VideoStreamParser();
+
+private: // redefined virtual functions:
+  virtual void flushInput();
+  virtual unsigned parse();
+
+private:
+  MPEG4VideoStreamFramer* usingSource() {
+    return (MPEG4VideoStreamFramer*)fUsingSource;
+  }
+  void setParseState(MPEGParseState parseState);
+
+  unsigned parseVisualObjectSequence(Boolean haveSeenStartCode = False);
+  unsigned parseVisualObject();
+  unsigned parseVideoObjectLayer();
+  unsigned parseGroupOfVideoObjectPlane();
+  unsigned parseVideoObjectPlane();
+  unsigned parseVisualObjectSequenceEndCode();
+
+  // These are used for parsing within an already-read frame:
+  Boolean getNextFrameBit(u_int8_t& result);
+  Boolean getNextFrameBits(unsigned numBits, u_int32_t& result);
+
+  // Which are used by:
+  void analyzeVOLHeader();
+
+private:
+  MPEGParseState fCurrentParseState;
+  unsigned fNumBitsSeenSoFar; // used by the getNextFrameBit*() routines
+  u_int32_t vop_time_increment_resolution;
+  unsigned fNumVTIRBits;
+      // # of bits needed to count to "vop_time_increment_resolution"
+  u_int8_t fixed_vop_rate;
+  unsigned fixed_vop_time_increment; // used if 'fixed_vop_rate' is set
+  unsigned fSecondsSinceLastTimeCode, fTotalTicksSinceLastTimeCode, fPrevNewTotalTicks;
+  unsigned fPrevPictureCountDelta;
+  Boolean fJustSawTimeCode;
+};
+
+
+////////// MPEG4VideoStreamFramer implementation //////////
+
+MPEG4VideoStreamFramer*
+MPEG4VideoStreamFramer::createNew(UsageEnvironment& env,
+				  FramedSource* inputSource) {
+  // Need to add source type checking here???  #####
+  return new MPEG4VideoStreamFramer(env, inputSource);
+}
+
+unsigned char* MPEG4VideoStreamFramer
+::getConfigBytes(unsigned& numBytes) const {
+  numBytes = fNumConfigBytes;
+  return fConfigBytes;
+}
+
+void MPEG4VideoStreamFramer
+::setConfigInfo(u_int8_t profileAndLevelIndication, char const* configStr) {
+  fProfileAndLevelIndication = profileAndLevelIndication;
+
+  delete[] fConfigBytes;
+  fConfigBytes = parseGeneralConfigStr(configStr, fNumConfigBytes);
+}
+
+MPEG4VideoStreamFramer::MPEG4VideoStreamFramer(UsageEnvironment& env,
+					       FramedSource* inputSource,
+					       Boolean createParser)
+  : MPEGVideoStreamFramer(env, inputSource),
+    fProfileAndLevelIndication(0),
+    fConfigBytes(NULL), fNumConfigBytes(0),
+    fNewConfigBytes(NULL), fNumNewConfigBytes(0) {
+  fParser = createParser
+    ? new MPEG4VideoStreamParser(this, inputSource)
+    : NULL;
+}
+
+MPEG4VideoStreamFramer::~MPEG4VideoStreamFramer() {
+  delete[] fConfigBytes; delete[] fNewConfigBytes;
+}
+
+void MPEG4VideoStreamFramer::startNewConfig() {
+  delete[] fNewConfigBytes; fNewConfigBytes = NULL;
+  fNumNewConfigBytes = 0;
+}
+
+void MPEG4VideoStreamFramer
+::appendToNewConfig(unsigned char* newConfigBytes, unsigned numNewBytes) {
+  // Allocate a new block of memory for the new config bytes:
+  unsigned char* configNew
+    = new unsigned char[fNumNewConfigBytes + numNewBytes];
+
+  // Copy the old, then the new, config bytes there:
+  memmove(configNew, fNewConfigBytes, fNumNewConfigBytes);
+  memmove(&configNew[fNumNewConfigBytes], newConfigBytes, numNewBytes);
+
+  delete[] fNewConfigBytes; fNewConfigBytes = configNew;
+  fNumNewConfigBytes += numNewBytes;
+}
+
+void MPEG4VideoStreamFramer::completeNewConfig() {
+  delete[] fConfigBytes; fConfigBytes = fNewConfigBytes;
+  fNewConfigBytes = NULL;
+  fNumConfigBytes = fNumNewConfigBytes;
+  fNumNewConfigBytes = 0;
+}
+
+Boolean MPEG4VideoStreamFramer::isMPEG4VideoStreamFramer() const {
+  return True;
+}
+
+////////// MPEG4VideoStreamParser implementation //////////
+
+MPEG4VideoStreamParser
+::MPEG4VideoStreamParser(MPEG4VideoStreamFramer* usingSource,
+			 FramedSource* inputSource)
+  : MPEGVideoStreamParser(usingSource, inputSource),
+    fCurrentParseState(PARSING_VISUAL_OBJECT_SEQUENCE),
+    vop_time_increment_resolution(0), fNumVTIRBits(0),
+    fixed_vop_rate(0), fixed_vop_time_increment(0),
+    fSecondsSinceLastTimeCode(0), fTotalTicksSinceLastTimeCode(0),
+    fPrevNewTotalTicks(0), fPrevPictureCountDelta(1), fJustSawTimeCode(False) {
+}
+
+MPEG4VideoStreamParser::~MPEG4VideoStreamParser() {
+}
+
+void MPEG4VideoStreamParser::setParseState(MPEGParseState parseState) {
+  fCurrentParseState = parseState;
+  MPEGVideoStreamParser::setParseState();
+}
+
+void MPEG4VideoStreamParser::flushInput() {
+  fSecondsSinceLastTimeCode = 0;
+  fTotalTicksSinceLastTimeCode = 0;
+  fPrevNewTotalTicks = 0;
+  fPrevPictureCountDelta = 1;
+
+  StreamParser::flushInput();
+  if (fCurrentParseState != PARSING_VISUAL_OBJECT_SEQUENCE) {
+    setParseState(PARSING_VISUAL_OBJECT_SEQUENCE); // later, change to GOV or VOP? #####
+  }
+}
+
+
+unsigned MPEG4VideoStreamParser::parse() {
+  try {
+    switch (fCurrentParseState) {
+    case PARSING_VISUAL_OBJECT_SEQUENCE: {
+      return parseVisualObjectSequence();
+    }
+    case PARSING_VISUAL_OBJECT_SEQUENCE_SEEN_CODE: {
+      return parseVisualObjectSequence(True);
+    }
+    case PARSING_VISUAL_OBJECT: {
+      return parseVisualObject();
+    }
+    case PARSING_VIDEO_OBJECT_LAYER: {
+      return parseVideoObjectLayer();
+    }
+    case PARSING_GROUP_OF_VIDEO_OBJECT_PLANE: {
+      return parseGroupOfVideoObjectPlane();
+    }
+    case PARSING_VIDEO_OBJECT_PLANE: {
+      return parseVideoObjectPlane();
+    }
+    case PARSING_VISUAL_OBJECT_SEQUENCE_END_CODE: {
+      return parseVisualObjectSequenceEndCode();
+    }
+    default: {
+      return 0; // shouldn't happen
+    }
+    }
+  } catch (int /*e*/) {
+#ifdef DEBUG
+    fprintf(stderr, "MPEG4VideoStreamParser::parse() EXCEPTION (This is normal behavior - *not* an error)\n");
+#endif
+    return 0;  // the parsing got interrupted
+  }
+}
+
+#define VISUAL_OBJECT_SEQUENCE_START_CODE 0x000001B0
+#define VISUAL_OBJECT_SEQUENCE_END_CODE   0x000001B1
+#define GROUP_VOP_START_CODE              0x000001B3
+#define VISUAL_OBJECT_START_CODE          0x000001B5
+#define VOP_START_CODE                    0x000001B6
+
+unsigned MPEG4VideoStreamParser
+::parseVisualObjectSequence(Boolean haveSeenStartCode) {
+#ifdef DEBUG
+  fprintf(stderr, "parsing VisualObjectSequence\n");
+#endif
+  usingSource()->startNewConfig();
+  u_int32_t first4Bytes;
+  if (!haveSeenStartCode) {
+    while ((first4Bytes = test4Bytes()) != VISUAL_OBJECT_SEQUENCE_START_CODE) {
+#ifdef DEBUG
+      fprintf(stderr, "ignoring non VS header: 0x%08x\n", first4Bytes);
+#endif
+      get1Byte(); setParseState(PARSING_VISUAL_OBJECT_SEQUENCE);
+          // ensures we progress over bad data
+    }
+    first4Bytes = get4Bytes();
+  } else {
+    // We've already seen the start code
+    first4Bytes = VISUAL_OBJECT_SEQUENCE_START_CODE;
+  }
+  save4Bytes(first4Bytes);
+
+  // The next byte is the "profile_and_level_indication":
+  u_int8_t pali = get1Byte();
+#ifdef DEBUG
+  fprintf(stderr, "profile_and_level_indication: %02x\n", pali);
+#endif
+  saveByte(pali);
+  usingSource()->fProfileAndLevelIndication = pali;
+
+  // Now, copy all bytes that we see, up until we reach
+  // a VISUAL_OBJECT_START_CODE:
+  u_int32_t next4Bytes = get4Bytes();
+  while (next4Bytes != VISUAL_OBJECT_START_CODE) {
+    saveToNextCode(next4Bytes);
+  }
+
+  setParseState(PARSING_VISUAL_OBJECT);
+
+  // Compute this frame's presentation time:
+  usingSource()->computePresentationTime(fTotalTicksSinceLastTimeCode);
+
+  // This header forms part of the 'configuration' information:
+  usingSource()->appendToNewConfig(fStartOfFrame, curFrameSize());
+
+  return curFrameSize();
+}
+
+static inline Boolean isVideoObjectStartCode(u_int32_t code) {
+  return code >= 0x00000100 && code <= 0x0000011F;
+}
+
+unsigned MPEG4VideoStreamParser::parseVisualObject() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing VisualObject\n");
+#endif
+  // Note that we've already read the VISUAL_OBJECT_START_CODE
+  save4Bytes(VISUAL_OBJECT_START_CODE);
+
+  // Next, extract the "visual_object_type" from the next 1 or 2 bytes:
+  u_int8_t nextByte = get1Byte(); saveByte(nextByte);
+  Boolean is_visual_object_identifier = (nextByte&0x80) != 0;
+  u_int8_t visual_object_type;
+  if (is_visual_object_identifier) {
+#ifdef DEBUG
+    fprintf(stderr, "visual_object_verid: 0x%x; visual_object_priority: 0x%x\n", (nextByte&0x78)>>3, (nextByte&0x07));
+#endif
+    nextByte = get1Byte(); saveByte(nextByte);
+    visual_object_type = (nextByte&0xF0)>>4;
+  } else {
+    visual_object_type = (nextByte&0x78)>>3;
+  }
+#ifdef DEBUG
+  fprintf(stderr, "visual_object_type: 0x%x\n", visual_object_type);
+#endif
+  // At present, we support only the "Video ID" "visual_object_type" (1)
+  if (visual_object_type != 1) {
+    usingSource()->envir() << "MPEG4VideoStreamParser::parseVisualObject(): Warning: We don't handle visual_object_type " << visual_object_type << "\n";
+  }
+
+  // Now, copy all bytes that we see, up until we reach
+  // a video_object_start_code
+  u_int32_t next4Bytes = get4Bytes();
+  while (!isVideoObjectStartCode(next4Bytes)) {
+    saveToNextCode(next4Bytes);
+  }
+  save4Bytes(next4Bytes);
+#ifdef DEBUG
+  fprintf(stderr, "saw a video_object_start_code: 0x%08x\n", next4Bytes);
+#endif
+
+  setParseState(PARSING_VIDEO_OBJECT_LAYER);
+
+  // Compute this frame's presentation time:
+  usingSource()->computePresentationTime(fTotalTicksSinceLastTimeCode);
+
+  // This header forms part of the 'configuration' information:
+  usingSource()->appendToNewConfig(fStartOfFrame, curFrameSize());
+
+  return curFrameSize();
+}
+
+static inline Boolean isVideoObjectLayerStartCode(u_int32_t code) {
+  return code >= 0x00000120 && code <= 0x0000012F;
+}
+
+Boolean MPEG4VideoStreamParser::getNextFrameBit(u_int8_t& result) {
+  if (fNumBitsSeenSoFar/8 >= curFrameSize()) return False;
+
+  u_int8_t nextByte = fStartOfFrame[fNumBitsSeenSoFar/8];
+  result = (nextByte>>(7-fNumBitsSeenSoFar%8))&1;
+  ++fNumBitsSeenSoFar;
+  return True;
+}
+
+Boolean MPEG4VideoStreamParser::getNextFrameBits(unsigned numBits,
+						 u_int32_t& result) {
+  result = 0;
+  for (unsigned i = 0; i < numBits; ++i) {
+    u_int8_t nextBit;
+    if (!getNextFrameBit(nextBit)) return False;
+    result = (result<<1)|nextBit;
+  }
+  return True;
+}
+
+void MPEG4VideoStreamParser::analyzeVOLHeader() {
+  // Extract timing information (in particular,
+  // "vop_time_increment_resolution") from the VOL Header:
+  fNumBitsSeenSoFar = 41;
+  do {
+    u_int8_t is_object_layer_identifier;
+    if (!getNextFrameBit(is_object_layer_identifier)) break;
+    if (is_object_layer_identifier) fNumBitsSeenSoFar += 7;
+
+    u_int32_t aspect_ratio_info;
+    if (!getNextFrameBits(4, aspect_ratio_info)) break;
+    if (aspect_ratio_info == 15 /*extended_PAR*/) fNumBitsSeenSoFar += 16;
+
+    u_int8_t vol_control_parameters;
+    if (!getNextFrameBit(vol_control_parameters)) break;
+    if (vol_control_parameters) {
+      fNumBitsSeenSoFar += 3; // chroma_format; low_delay
+      u_int8_t vbw_parameters;
+      if (!getNextFrameBit(vbw_parameters)) break;
+      if (vbw_parameters) fNumBitsSeenSoFar += 79;
+    }
+
+    fNumBitsSeenSoFar += 2; // video_object_layer_shape
+    u_int8_t marker_bit;
+    if (!getNextFrameBit(marker_bit)) break;
+    if (marker_bit != 1) { // sanity check
+      usingSource()->envir() << "MPEG4VideoStreamParser::analyzeVOLHeader(): marker_bit 1 not set!\n";
+      break;
+    }
+
+    if (!getNextFrameBits(16, vop_time_increment_resolution)) break;
+#ifdef DEBUG
+    fprintf(stderr, "vop_time_increment_resolution: %d\n", vop_time_increment_resolution);
+#endif
+    if (vop_time_increment_resolution == 0) {
+      usingSource()->envir() << "MPEG4VideoStreamParser::analyzeVOLHeader(): vop_time_increment_resolution is zero!\n";
+      break;
+    }
+    // Compute how many bits are necessary to represent this:
+    fNumVTIRBits = 0;
+    for (unsigned test = vop_time_increment_resolution; test>0; test /= 2) {
+      ++fNumVTIRBits;
+    }
+
+    if (!getNextFrameBit(marker_bit)) break;
+    if (marker_bit != 1) { // sanity check
+      usingSource()->envir() << "MPEG4VideoStreamParser::analyzeVOLHeader(): marker_bit 2 not set!\n";
+      break;
+    }
+
+    if (!getNextFrameBit(fixed_vop_rate)) break;
+    if (fixed_vop_rate) {
+      // Get the following "fixed_vop_time_increment":
+      if (!getNextFrameBits(fNumVTIRBits, fixed_vop_time_increment)) break;
+#ifdef DEBUG
+      fprintf(stderr, "fixed_vop_time_increment: %d\n", fixed_vop_time_increment);
+      if (fixed_vop_time_increment == 0) {
+	usingSource()->envir() << "MPEG4VideoStreamParser::analyzeVOLHeader(): fixed_vop_time_increment is zero!\n";
+      }
+#endif
+    }
+    // Use "vop_time_increment_resolution" as the 'frame rate'
+    // (really, 'tick rate'):
+    usingSource()->fFrameRate = (double)vop_time_increment_resolution;
+#ifdef DEBUG
+    fprintf(stderr, "fixed_vop_rate: %d; 'frame' (really tick) rate: %f\n", fixed_vop_rate, usingSource()->fFrameRate);
+#endif
+
+    return;
+  } while (0);
+
+  if (fNumBitsSeenSoFar/8 >= curFrameSize()) {
+    char errMsg[200];
+    sprintf(errMsg, "Not enough bits in VOL header: %d/8 >= %d\n", fNumBitsSeenSoFar, curFrameSize());
+    usingSource()->envir() << errMsg;
+  }
+}
+
+unsigned MPEG4VideoStreamParser::parseVideoObjectLayer() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing VideoObjectLayer\n");
+#endif
+  // The first 4 bytes must be a "video_object_layer_start_code".
+  // If not, this is a 'short video header', which we currently
+  // don't support:
+  u_int32_t next4Bytes = get4Bytes();
+  if (!isVideoObjectLayerStartCode(next4Bytes)) {
+    usingSource()->envir() << "MPEG4VideoStreamParser::parseVideoObjectLayer(): This appears to be a 'short video header', which we currently don't support\n";
+  }
+
+  // Now, copy all bytes that we see, up until we reach
+  // a GROUP_VOP_START_CODE or a VOP_START_CODE:
+  do {
+    saveToNextCode(next4Bytes);
+  } while (next4Bytes != GROUP_VOP_START_CODE
+	   && next4Bytes != VOP_START_CODE);
+
+  analyzeVOLHeader();
+
+  setParseState((next4Bytes == GROUP_VOP_START_CODE)
+                ? PARSING_GROUP_OF_VIDEO_OBJECT_PLANE
+		: PARSING_VIDEO_OBJECT_PLANE);
+
+  // Compute this frame's presentation time:
+  usingSource()->computePresentationTime(fTotalTicksSinceLastTimeCode);
+
+  // This header ends the 'configuration' information:
+  usingSource()->appendToNewConfig(fStartOfFrame, curFrameSize());
+  usingSource()->completeNewConfig();
+
+  return curFrameSize();
+}
+
+unsigned MPEG4VideoStreamParser::parseGroupOfVideoObjectPlane() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing GroupOfVideoObjectPlane\n");
+#endif
+  // Note that we've already read the GROUP_VOP_START_CODE
+  save4Bytes(GROUP_VOP_START_CODE);
+
+  // Next, extract the (18-bit) time code from the next 3 bytes:
+  u_int8_t next3Bytes[3];
+  getBytes(next3Bytes, 3);
+  saveByte(next3Bytes[0]);saveByte(next3Bytes[1]);saveByte(next3Bytes[2]);
+  unsigned time_code
+    = (next3Bytes[0]<<10)|(next3Bytes[1]<<2)|(next3Bytes[2]>>6);
+  unsigned time_code_hours    = (time_code&0x0003E000)>>13;
+  unsigned time_code_minutes  = (time_code&0x00001F80)>>7;
+#if defined(DEBUG) || defined(DEBUG_TIMESTAMPS)
+  Boolean marker_bit          = (time_code&0x00000040) != 0;
+#endif
+  unsigned time_code_seconds  = (time_code&0x0000003F);
+#if defined(DEBUG) || defined(DEBUG_TIMESTAMPS)
+  fprintf(stderr, "time_code: 0x%05x, hours %d, minutes %d, marker_bit %d, seconds %d\n", time_code, time_code_hours, time_code_minutes, marker_bit, time_code_seconds);
+#endif
+  fJustSawTimeCode = True;
+
+  // Now, copy all bytes that we see, up until we reach a VOP_START_CODE:
+  u_int32_t next4Bytes = get4Bytes();
+  while (next4Bytes != VOP_START_CODE) {
+    saveToNextCode(next4Bytes);
+  }
+
+  // Compute this frame's presentation time:
+  usingSource()->computePresentationTime(fTotalTicksSinceLastTimeCode);
+
+  // Record the time code:
+  usingSource()->setTimeCode(time_code_hours, time_code_minutes,
+                             time_code_seconds, 0, 0);
+    // Note: Because the GOV header can appear anywhere (not just at a 1s point), we
+    // don't pass "fTotalTicksSinceLastTimeCode" as the "picturesSinceLastGOP" parameter.
+  fSecondsSinceLastTimeCode = 0;
+  if (fixed_vop_rate) fTotalTicksSinceLastTimeCode = 0;
+
+  setParseState(PARSING_VIDEO_OBJECT_PLANE);
+
+  return curFrameSize();
+}
+
+unsigned MPEG4VideoStreamParser::parseVideoObjectPlane() {
+#ifdef DEBUG
+  fprintf(stderr, "#parsing VideoObjectPlane\n");
+#endif
+  // Note that we've already read the VOP_START_CODE
+  save4Bytes(VOP_START_CODE);
+
+  // Get the "vop_coding_type" from the next byte:
+  u_int8_t nextByte = get1Byte(); saveByte(nextByte);
+  u_int8_t vop_coding_type = nextByte>>6;
+
+  // Next, get the "modulo_time_base" by counting the '1' bits that follow.
+  // We look at the next 32-bits only.  This should be enough in most cases.
+  u_int32_t next4Bytes = get4Bytes();
+  u_int32_t timeInfo = (nextByte<<(32-6))|(next4Bytes>>6);
+  unsigned modulo_time_base = 0;
+  u_int32_t mask = 0x80000000;
+  while ((timeInfo&mask) != 0) {
+    ++modulo_time_base;
+    mask >>= 1;
+  }
+  mask >>= 1;
+
+  // Check the following marker bit:
+  if ((timeInfo&mask) == 0) {
+    usingSource()->envir() << "MPEG4VideoStreamParser::parseVideoObjectPlane(): marker bit not set!\n";
+  }
+  mask >>= 1;
+
+  // Then, get the "vop_time_increment".
+  // First, make sure we have enough bits left for this:
+  if ((mask>>(fNumVTIRBits-1)) == 0) {
+    usingSource()->envir() << "MPEG4VideoStreamParser::parseVideoObjectPlane(): 32-bits are not enough to get \"vop_time_increment\"!\n";
+  }
+  unsigned vop_time_increment = 0;
+  for (unsigned i = 0; i < fNumVTIRBits; ++i) {
+    vop_time_increment |= timeInfo&mask;
+    mask >>= 1;
+  }
+  while (mask != 0) {
+    vop_time_increment >>= 1;
+    mask >>= 1;
+  }
+#ifdef DEBUG
+  fprintf(stderr, "vop_coding_type: %d(%c), modulo_time_base: %d, vop_time_increment: %d\n", vop_coding_type, "IPBS"[vop_coding_type], modulo_time_base, vop_time_increment);
+#endif
+
+  // Now, copy all bytes that we see, up until we reach a code of some sort:
+  saveToNextCode(next4Bytes);
+
+  // Update our counters based on the frame timing information that we saw:
+  if (fixed_vop_time_increment > 0) {
+    // This is a 'fixed_vop_rate' stream.  Use 'fixed_vop_time_increment':
+    usingSource()->fPictureCount += fixed_vop_time_increment;
+    if (vop_time_increment > 0 || modulo_time_base > 0) {
+      fTotalTicksSinceLastTimeCode += fixed_vop_time_increment;
+      // Note: "fSecondsSinceLastTimeCode" and "fPrevNewTotalTicks" are not used.
+    }
+  } else {
+    // Use 'vop_time_increment':
+    unsigned newTotalTicks
+      = (fSecondsSinceLastTimeCode + modulo_time_base)*vop_time_increment_resolution
+      + vop_time_increment;
+    if (newTotalTicks == fPrevNewTotalTicks && fPrevNewTotalTicks > 0) {
+      // This is apparently a buggy MPEG-4 video stream, because
+      // "vop_time_increment" did not change.  Overcome this error,
+      // by pretending that it did change.
+#ifdef DEBUG
+      fprintf(stderr, "Buggy MPEG-4 video stream: \"vop_time_increment\" did not change!\n");
+#endif
+      // The following assumes that we don't have 'B' frames.  If we do, then TARFU!
+      usingSource()->fPictureCount += vop_time_increment;
+      fTotalTicksSinceLastTimeCode += vop_time_increment;
+      fSecondsSinceLastTimeCode += modulo_time_base;
+    } else {
+      if (newTotalTicks < fPrevNewTotalTicks && vop_coding_type != 2/*B*/
+	  && modulo_time_base == 0 && vop_time_increment == 0 && !fJustSawTimeCode) {
+	// This is another kind of buggy MPEG-4 video stream, in which
+	// "vop_time_increment" wraps around, but without
+	// "modulo_time_base" changing (or just having had a new time code).
+	// Overcome this by pretending that "vop_time_increment" *did* wrap around:
+#ifdef DEBUG
+	fprintf(stderr, "Buggy MPEG-4 video stream: \"vop_time_increment\" wrapped around, but without \"modulo_time_base\" changing!\n");
+#endif
+	++fSecondsSinceLastTimeCode;
+	newTotalTicks += vop_time_increment_resolution;
+      }
+      fPrevNewTotalTicks = newTotalTicks;
+      if (vop_coding_type != 2/*B*/) {
+	int pictureCountDelta = newTotalTicks - fTotalTicksSinceLastTimeCode;
+	if (pictureCountDelta <= 0) pictureCountDelta = fPrevPictureCountDelta;
+	    // ensures that the picture count is always increasing
+	usingSource()->fPictureCount += pictureCountDelta;
+	fPrevPictureCountDelta = pictureCountDelta;
+	fTotalTicksSinceLastTimeCode = newTotalTicks;
+	fSecondsSinceLastTimeCode += modulo_time_base;
+      }
+    }
+  }
+  fJustSawTimeCode = False; // for next time
+
+  // The next thing to parse depends on the code that we just saw,
+  // but we are assumed to have ended the current picture:
+  usingSource()->fPictureEndMarker = True; // HACK #####
+  switch (next4Bytes) {
+  case VISUAL_OBJECT_SEQUENCE_END_CODE: {
+    setParseState(PARSING_VISUAL_OBJECT_SEQUENCE_END_CODE);
+    break;
+  }
+  case VISUAL_OBJECT_SEQUENCE_START_CODE: {
+    setParseState(PARSING_VISUAL_OBJECT_SEQUENCE_SEEN_CODE);
+    break;
+  }
+  case VISUAL_OBJECT_START_CODE: {
+    setParseState(PARSING_VISUAL_OBJECT);
+    break;
+  }
+  case GROUP_VOP_START_CODE: {
+    setParseState(PARSING_GROUP_OF_VIDEO_OBJECT_PLANE);
+    break;
+  }
+  case VOP_START_CODE: {
+    setParseState(PARSING_VIDEO_OBJECT_PLANE);
+    break;
+  }
+  default: {
+    if (isVideoObjectStartCode(next4Bytes)) {
+      setParseState(PARSING_VIDEO_OBJECT_LAYER);
+    } else if (isVideoObjectLayerStartCode(next4Bytes)){
+      // copy all bytes that we see, up until we reach a VOP_START_CODE:
+      u_int32_t next4Bytes = get4Bytes();
+      while (next4Bytes != VOP_START_CODE) {
+	saveToNextCode(next4Bytes);
+      }
+      setParseState(PARSING_VIDEO_OBJECT_PLANE);
+    } else {
+      usingSource()->envir() << "MPEG4VideoStreamParser::parseVideoObjectPlane(): Saw unexpected code "
+			     << (void*)next4Bytes << "\n";
+      setParseState(PARSING_VIDEO_OBJECT_PLANE); // the safest way to recover...
+    }
+    break;
+  }
+  }
+
+  // Compute this frame's presentation time:
+  usingSource()->computePresentationTime(fTotalTicksSinceLastTimeCode);
+
+  return curFrameSize();
+}
+
+unsigned MPEG4VideoStreamParser::parseVisualObjectSequenceEndCode() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing VISUAL_OBJECT_SEQUENCE_END_CODE\n");
+#endif
+  // Note that we've already read the VISUAL_OBJECT_SEQUENCE_END_CODE
+  save4Bytes(VISUAL_OBJECT_SEQUENCE_END_CODE);
+
+  setParseState(PARSING_VISUAL_OBJECT_SEQUENCE);
+
+  // Treat this as if we had ended a picture:
+  usingSource()->fPictureEndMarker = True; // HACK #####
+
+  return curFrameSize();
+}
diff --git a/liveMedia/MPEGVideoStreamFramer.cpp b/liveMedia/MPEGVideoStreamFramer.cpp
new file mode 100644
index 0000000..9baba76
--- /dev/null
+++ b/liveMedia/MPEGVideoStreamFramer.cpp
@@ -0,0 +1,187 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an MPEG video elementary stream into
+//   headers and frames
+// Implementation
+
+#include "MPEGVideoStreamParser.hh"
+#include <GroupsockHelper.hh>
+
+////////// TimeCode implementation //////////
+
+TimeCode::TimeCode()
+  : days(0), hours(0), minutes(0), seconds(0), pictures(0) {
+}
+
+TimeCode::~TimeCode() {
+}
+
+int TimeCode::operator==(TimeCode const& arg2) {
+  return pictures == arg2.pictures && seconds == arg2.seconds
+    && minutes == arg2.minutes && hours == arg2.hours && days == arg2.days;
+}
+
+////////// MPEGVideoStreamFramer implementation //////////
+
+MPEGVideoStreamFramer::MPEGVideoStreamFramer(UsageEnvironment& env,
+					     FramedSource* inputSource)
+  : FramedFilter(env, inputSource),
+    fFrameRate(0.0) /* until we learn otherwise */,
+    fParser(NULL) {
+  reset();
+}
+
+MPEGVideoStreamFramer::~MPEGVideoStreamFramer() {
+  delete fParser;
+}
+
+void MPEGVideoStreamFramer::flushInput() {
+  reset();
+  if (fParser != NULL) fParser->flushInput();
+}
+
+void MPEGVideoStreamFramer::reset() {
+  fPictureCount = 0;
+  fPictureEndMarker = True; // So that we start looking as if we'd just ended an 'access unit'
+  fPicturesAdjustment = 0;
+  fPictureTimeBase = 0.0;
+  fTcSecsBase = 0;
+  fHaveSeenFirstTimeCode = False;
+
+  // Clear the 'presentation time base', as a signal for subclasses
+  // to reset it (to our current time) when we start (or resume) streaming:
+  fPresentationTimeBase.tv_sec = 0;
+  fPresentationTimeBase.tv_usec = 0;
+}
+
+#ifdef DEBUG
+static struct timeval firstPT;
+#endif
+void MPEGVideoStreamFramer
+::computePresentationTime(unsigned numAdditionalPictures) {
+  // Computes "fPresentationTime" from the most recent GOP's
+  // time_code, along with the "numAdditionalPictures" parameter:
+  TimeCode& tc = fCurGOPTimeCode;
+
+  unsigned tcSecs
+    = (((tc.days*24)+tc.hours)*60+tc.minutes)*60+tc.seconds - fTcSecsBase;
+  double pictureTime = fFrameRate == 0.0 ? 0.0
+    : (tc.pictures + fPicturesAdjustment + numAdditionalPictures)/fFrameRate;
+  while (pictureTime < fPictureTimeBase) { // "if" should be enough, but just in case
+    if (tcSecs > 0) tcSecs -= 1;
+    pictureTime += 1.0;
+  }
+  pictureTime -= fPictureTimeBase;
+  if (pictureTime < 0.0) pictureTime = 0.0; // sanity check
+  unsigned pictureSeconds = (unsigned)pictureTime;
+  double pictureFractionOfSecond = pictureTime - (double)pictureSeconds;
+
+  fPresentationTime = fPresentationTimeBase;
+  fPresentationTime.tv_sec += tcSecs + pictureSeconds;
+  fPresentationTime.tv_usec += (long)(pictureFractionOfSecond*1000000.0);
+  if (fPresentationTime.tv_usec >= 1000000) {
+    fPresentationTime.tv_usec -= 1000000;
+    ++fPresentationTime.tv_sec;
+  }
+#ifdef DEBUG
+  if (firstPT.tv_sec == 0 && firstPT.tv_usec == 0) firstPT = fPresentationTime;
+  struct timeval diffPT;
+  diffPT.tv_sec = fPresentationTime.tv_sec - firstPT.tv_sec;
+  diffPT.tv_usec = fPresentationTime.tv_usec - firstPT.tv_usec;
+  if (fPresentationTime.tv_usec < firstPT.tv_usec) {
+    --diffPT.tv_sec;
+    diffPT.tv_usec += 1000000;
+  }
+  fprintf(stderr, "MPEGVideoStreamFramer::computePresentationTime(%d) -> %lu.%06ld [%lu.%06ld]\n", numAdditionalPictures, fPresentationTime.tv_sec, fPresentationTime.tv_usec, diffPT.tv_sec, diffPT.tv_usec);
+#endif
+}
+
+void MPEGVideoStreamFramer
+::setTimeCode(unsigned hours, unsigned minutes, unsigned seconds,
+	      unsigned pictures, unsigned picturesSinceLastGOP) {
+  TimeCode& tc = fCurGOPTimeCode; // abbrev
+  unsigned days = tc.days;
+  if (hours < tc.hours) {
+    // Assume that the 'day' has wrapped around:
+    ++days;
+  }
+  tc.days = days;
+  tc.hours = hours;
+  tc.minutes = minutes;
+  tc.seconds = seconds;
+  tc.pictures = pictures;
+  if (!fHaveSeenFirstTimeCode) {
+    fPictureTimeBase = fFrameRate == 0.0 ? 0.0 : tc.pictures/fFrameRate;
+    fTcSecsBase = (((tc.days*24)+tc.hours)*60+tc.minutes)*60+tc.seconds;
+    fHaveSeenFirstTimeCode = True;
+  } else if (fCurGOPTimeCode == fPrevGOPTimeCode) {
+    // The time code has not changed since last time.  Adjust for this:
+    fPicturesAdjustment += picturesSinceLastGOP;
+  } else {
+    // Normal case: The time code changed since last time.
+    fPrevGOPTimeCode = tc;
+    fPicturesAdjustment = 0;
+  }
+}
+
+void MPEGVideoStreamFramer::doGetNextFrame() {
+  fParser->registerReadInterest(fTo, fMaxSize);
+  continueReadProcessing();
+}
+
+void MPEGVideoStreamFramer::doStopGettingFrames() {
+  flushInput();
+  FramedFilter::doStopGettingFrames();
+}
+
+void MPEGVideoStreamFramer
+::continueReadProcessing(void* clientData,
+			 unsigned char* /*ptr*/, unsigned /*size*/,
+			 struct timeval /*presentationTime*/) {
+  MPEGVideoStreamFramer* framer = (MPEGVideoStreamFramer*)clientData;
+  framer->continueReadProcessing();
+}
+
+void MPEGVideoStreamFramer::continueReadProcessing() {
+  unsigned acquiredFrameSize = fParser->parse();
+  if (acquiredFrameSize > 0) {
+    // We were able to acquire a frame from the input.
+    // It has already been copied to the reader's space.
+    fFrameSize = acquiredFrameSize;
+    fNumTruncatedBytes = fParser->numTruncatedBytes();
+
+    // "fPresentationTime" should have already been computed.
+
+    // Compute "fDurationInMicroseconds" now:
+    fDurationInMicroseconds
+      = (fFrameRate == 0.0 || ((int)fPictureCount) < 0) ? 0
+      : (unsigned)((fPictureCount*1000000)/fFrameRate);
+#ifdef DEBUG
+    fprintf(stderr, "%d bytes @%u.%06d, fDurationInMicroseconds: %d ((%d*1000000)/%f)\n", acquiredFrameSize, fPresentationTime.tv_sec, fPresentationTime.tv_usec, fDurationInMicroseconds, fPictureCount, fFrameRate);
+#endif
+    fPictureCount = 0;
+
+    // Call our own 'after getting' function.  Because we're not a 'leaf'
+    // source, we can call this directly, without risking infinite recursion.
+    afterGetting(this);
+  } else {
+    // We were unable to parse a complete frame from the input, because:
+    // - we had to read more data from the source stream, or
+    // - the source stream has ended.
+  }
+}
diff --git a/liveMedia/MPEGVideoStreamParser.cpp b/liveMedia/MPEGVideoStreamParser.cpp
new file mode 100644
index 0000000..60c54fb
--- /dev/null
+++ b/liveMedia/MPEGVideoStreamParser.cpp
@@ -0,0 +1,45 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// An abstract parser for MPEG video streams
+// Implementation
+
+#include "MPEGVideoStreamParser.hh"
+
+MPEGVideoStreamParser
+::MPEGVideoStreamParser(MPEGVideoStreamFramer* usingSource,
+			FramedSource* inputSource)
+  : StreamParser(inputSource, FramedSource::handleClosure, usingSource,
+		 &MPEGVideoStreamFramer::continueReadProcessing, usingSource),
+  fUsingSource(usingSource) {
+}
+
+MPEGVideoStreamParser::~MPEGVideoStreamParser() {
+}
+
+void MPEGVideoStreamParser::restoreSavedParserState() {
+  StreamParser::restoreSavedParserState();
+  fTo = fSavedTo;
+  fNumTruncatedBytes = fSavedNumTruncatedBytes;
+}
+
+void MPEGVideoStreamParser::registerReadInterest(unsigned char* to,
+						 unsigned maxSize) {
+  fStartOfFrame = fTo = fSavedTo = to;
+  fLimit = to + maxSize;
+  fNumTruncatedBytes = fSavedNumTruncatedBytes = 0;
+}
diff --git a/liveMedia/MPEGVideoStreamParser.hh b/liveMedia/MPEGVideoStreamParser.hh
new file mode 100644
index 0000000..5236cf4
--- /dev/null
+++ b/liveMedia/MPEGVideoStreamParser.hh
@@ -0,0 +1,122 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// An abstract parser for MPEG video streams
+// C++ header
+
+#ifndef _MPEG_VIDEO_STREAM_PARSER_HH
+#define _MPEG_VIDEO_STREAM_PARSER_HH
+
+#ifndef _STREAM_PARSER_HH
+#include "StreamParser.hh"
+#endif
+#ifndef _MPEG_VIDEO_STREAM_FRAMER_HH
+#include "MPEGVideoStreamFramer.hh"
+#endif
+
+////////// MPEGVideoStreamParser definition //////////
+
+class MPEGVideoStreamParser: public StreamParser {
+public:
+  MPEGVideoStreamParser(MPEGVideoStreamFramer* usingSource,
+			FramedSource* inputSource);
+  virtual ~MPEGVideoStreamParser();
+
+public:
+  void registerReadInterest(unsigned char* to, unsigned maxSize);
+
+  virtual unsigned parse() = 0;
+      // returns the size of the frame that was acquired, or 0 if none was
+      // The number of truncated bytes (if any) is given by:
+  unsigned numTruncatedBytes() const { return fNumTruncatedBytes; }
+
+protected:
+  void setParseState() {
+    fSavedTo = fTo;
+    fSavedNumTruncatedBytes = fNumTruncatedBytes;
+    saveParserState();
+  }
+
+  // Record "byte" in the current output frame:
+  void saveByte(u_int8_t byte) {
+    if (fTo >= fLimit) { // there's no space left
+      ++fNumTruncatedBytes;
+      return;
+    }
+
+    *fTo++ = byte;
+  }
+
+  void save4Bytes(u_int32_t word) {
+    if (fTo+4 > fLimit) { // there's no space left
+      fNumTruncatedBytes += 4;
+      return;
+    }
+
+    *fTo++ = word>>24; *fTo++ = word>>16; *fTo++ = word>>8; *fTo++ = word;
+  }
+
+  // Save data until we see a sync word (0x000001xx):
+  void saveToNextCode(u_int32_t& curWord) {
+    saveByte(curWord>>24);
+    curWord = (curWord<<8)|get1Byte();
+    while ((curWord&0xFFFFFF00) != 0x00000100) {
+      if ((unsigned)(curWord&0xFF) > 1) {
+	// a sync word definitely doesn't begin anywhere in "curWord"
+	save4Bytes(curWord);
+	curWord = get4Bytes();
+      } else {
+	// a sync word might begin in "curWord", although not at its start
+	saveByte(curWord>>24);
+	unsigned char newByte = get1Byte();
+	curWord = (curWord<<8)|newByte;
+      }
+    }
+  }
+
+  // Skip data until we see a sync word (0x000001xx):
+  void skipToNextCode(u_int32_t& curWord) {
+    curWord = (curWord<<8)|get1Byte();
+    while ((curWord&0xFFFFFF00) != 0x00000100) {
+      if ((unsigned)(curWord&0xFF) > 1) {
+	// a sync word definitely doesn't begin anywhere in "curWord"
+	curWord = get4Bytes();
+      } else {
+	// a sync word might begin in "curWord", although not at its start
+	unsigned char newByte = get1Byte();
+	curWord = (curWord<<8)|newByte;
+      }
+    }
+  }
+
+protected:
+  MPEGVideoStreamFramer* fUsingSource;
+
+  // state of the frame that's currently being read:
+  unsigned char* fStartOfFrame;
+  unsigned char* fTo;
+  unsigned char* fLimit;
+  unsigned fNumTruncatedBytes;
+  unsigned curFrameSize() { return fTo - fStartOfFrame; }
+  unsigned char* fSavedTo;
+  unsigned fSavedNumTruncatedBytes;
+
+private: // redefined virtual functions
+  virtual void restoreSavedParserState();
+};
+
+#endif
diff --git a/liveMedia/Makefile.head b/liveMedia/Makefile.head
new file mode 100644
index 0000000..f4e4414
--- /dev/null
+++ b/liveMedia/Makefile.head
@@ -0,0 +1,4 @@
+INCLUDES = -Iinclude -I../UsageEnvironment/include -I../groupsock/include
+PREFIX = /usr/local
+LIBDIR = $(PREFIX)/lib
+##### Change the following for your environment:
diff --git a/liveMedia/Makefile.tail b/liveMedia/Makefile.tail
new file mode 100644
index 0000000..1740c74
--- /dev/null
+++ b/liveMedia/Makefile.tail
@@ -0,0 +1,447 @@
+##### End of variables to change
+
+NAME = libliveMedia
+LIVEMEDIA_LIB = $(NAME).$(LIB_SUFFIX)
+ALL = $(LIVEMEDIA_LIB)
+all:	$(ALL)
+
+.$(C).$(OBJ):
+	$(C_COMPILER) -c $(C_FLAGS) $<
+.$(CPP).$(OBJ):
+	$(CPLUSPLUS_COMPILER) -c $(CPLUSPLUS_FLAGS) $<
+
+MP3_SOURCE_OBJS = MP3FileSource.$(OBJ) MP3Transcoder.$(OBJ) MP3ADU.$(OBJ) MP3ADUdescriptor.$(OBJ) MP3ADUinterleaving.$(OBJ) MP3ADUTranscoder.$(OBJ) MP3StreamState.$(OBJ) MP3Internals.$(OBJ) MP3InternalsHuffman.$(OBJ) MP3InternalsHuffmanTable.$(OBJ) MP3ADURTPSource.$(OBJ)
+MPEG_SOURCE_OBJS = MPEG1or2Demux.$(OBJ) MPEG1or2DemuxedElementaryStream.$(OBJ) MPEGVideoStreamFramer.$(OBJ) MPEG1or2VideoStreamFramer.$(OBJ) MPEG1or2VideoStreamDiscreteFramer.$(OBJ) MPEG4VideoStreamFramer.$(OBJ) MPEG4VideoStreamDiscreteFramer.$(OBJ) H264or5VideoStreamFramer.$(OBJ) H264or5VideoStreamDiscreteFramer.$(OBJ) H264VideoStreamFramer.$(OBJ) H264VideoStreamDiscreteFramer.$(OBJ) H265VideoStreamFramer.$(OBJ) H265VideoStreamDiscreteFramer.$(OBJ) MPEGVideoStreamParser.$(OBJ) MPEG1or2AudioStreamFramer.$(OBJ) MPEG1or2AudioRTPSource.$(OBJ) MPEG4LATMAudioRTPSource.$(OBJ) MPEG4ESVideoRTPSource.$(OBJ) MPEG4GenericRTPSource.$(OBJ) $(MP3_SOURCE_OBJS) MPEG1or2VideoRTPSource.$(OBJ) MPEG2TransportStreamMultiplexor.$(OBJ) MPEG2TransportStreamFromPESSource.$(OBJ) MPEG2TransportStreamFromESSource.$(OBJ) MPEG2TransportStreamFramer.$(OBJ) MPEG2TransportStreamAccumulator.$(OBJ) ADTSAudioFileSource.$(OBJ)
+#JPEG_SOURCE_OBJS = JPEGVideoSource.$(OBJ) JPEGVideoRTPSource.$(OBJ) JPEG2000VideoStreamFramer.$(OBJ) JPEG2000VideoStreamParser.$(OBJ) JPEG2000VideoRTPSource.$(OBJ)
+JPEG_SOURCE_OBJS = JPEGVideoSource.$(OBJ) JPEGVideoRTPSource.$(OBJ) JPEG2000VideoRTPSource.$(OBJ)
+H263_SOURCE_OBJS = H263plusVideoRTPSource.$(OBJ) H263plusVideoStreamFramer.$(OBJ) H263plusVideoStreamParser.$(OBJ)
+AC3_SOURCE_OBJS = AC3AudioStreamFramer.$(OBJ) AC3AudioRTPSource.$(OBJ)
+DV_SOURCE_OBJS = DVVideoStreamFramer.$(OBJ) DVVideoRTPSource.$(OBJ)
+MP3_SINK_OBJS = MP3ADURTPSink.$(OBJ)
+MPEG_SINK_OBJS = MPEG1or2AudioRTPSink.$(OBJ) $(MP3_SINK_OBJS) MPEG1or2VideoRTPSink.$(OBJ) MPEG4LATMAudioRTPSink.$(OBJ) MPEG4GenericRTPSink.$(OBJ) MPEG4ESVideoRTPSink.$(OBJ)
+JPEG_SINK_OBJS = JPEGVideoRTPSink.$(OBJ) JPEG2000VideoRTPSink.$(OBJ)
+H263_SINK_OBJS = H263plusVideoRTPSink.$(OBJ)
+H264_OR_5_SINK_OBJS = H264or5VideoRTPSink.$(OBJ) H264VideoRTPSink.$(OBJ) H265VideoRTPSink.$(OBJ)
+DV_SINK_OBJS = DVVideoRTPSink.$(OBJ)
+AC3_SINK_OBJS = AC3AudioRTPSink.$(OBJ)
+
+MISC_SOURCE_OBJS = MediaSource.$(OBJ) FramedSource.$(OBJ) FramedFileSource.$(OBJ) FramedFilter.$(OBJ) ByteStreamFileSource.$(OBJ) ByteStreamMultiFileSource.$(OBJ) ByteStreamMemoryBufferSource.$(OBJ) BasicUDPSource.$(OBJ) DeviceSource.$(OBJ) AudioInputDevice.$(OBJ) WAVAudioFileSource.$(OBJ) $(MPEG_SOURCE_OBJS) $(JPEG_SOURCE_OBJS) $(H263_SOURCE_OBJS) $(AC3_SOURCE_OBJS) $(DV_SOURCE_OBJS) AMRAudioSource.$(OBJ) AMRAudioFileSource.$(OBJ) InputFile.$(OBJ) StreamReplicator.$(OBJ)
+MISC_SINK_OBJS = MediaSink.$(OBJ) FileSink.$(OBJ) BasicUDPSink.$(OBJ) AMRAudioFileSink.$(OBJ) H264or5VideoFileSink.$(OBJ) H264VideoFileSink.$(OBJ) H265VideoFileSink.$(OBJ) OggFileSink.$(OBJ) $(MPEG_SINK_OBJS) $(JPEG_SINK_OBJS) $(H263_SINK_OBJS) $(H264_OR_5_SINK_OBJS) $(DV_SINK_OBJS) $(AC3_SINK_OBJS) VorbisAudioRTPSink.$(OBJ) TheoraVideoRTPSink.$(OBJ) VP8VideoRTPSink.$(OBJ) VP9VideoRTPSink.$(OBJ) GSMAudioRTPSink.$(OBJ) SimpleRTPSink.$(OBJ) AMRAudioRTPSink.$(OBJ) T140TextRTPSink.$(OBJ) TCPStreamSink.$(OBJ) OutputFile.$(OBJ) RawVideoRTPSink.$(OBJ)
+MISC_FILTER_OBJS = uLawAudioFilter.$(OBJ)
+TRANSPORT_STREAM_TRICK_PLAY_OBJS = MPEG2IndexFromTransportStream.$(OBJ) MPEG2TransportStreamIndexFile.$(OBJ) MPEG2TransportStreamTrickModeFilter.$(OBJ)
+
+RTP_SOURCE_OBJS = RTPSource.$(OBJ) MultiFramedRTPSource.$(OBJ) SimpleRTPSource.$(OBJ) H261VideoRTPSource.$(OBJ) H264VideoRTPSource.$(OBJ) H265VideoRTPSource.$(OBJ) QCELPAudioRTPSource.$(OBJ) AMRAudioRTPSource.$(OBJ) VorbisAudioRTPSource.$(OBJ) TheoraVideoRTPSource.$(OBJ) VP8VideoRTPSource.$(OBJ) VP9VideoRTPSource.$(OBJ) RawVideoRTPSource.$(OBJ)
+RTP_SINK_OBJS = RTPSink.$(OBJ) MultiFramedRTPSink.$(OBJ) AudioRTPSink.$(OBJ) VideoRTPSink.$(OBJ) TextRTPSink.$(OBJ)
+RTP_INTERFACE_OBJS = RTPInterface.$(OBJ)
+RTP_OBJS = $(RTP_SOURCE_OBJS) $(RTP_SINK_OBJS) $(RTP_INTERFACE_OBJS)
+
+RTCP_OBJS = RTCP.$(OBJ) rtcp_from_spec.$(OBJ)
+GENERIC_MEDIA_SERVER_OBJS = GenericMediaServer.$(OBJ)
+RTSP_OBJS = RTSPServer.$(OBJ) RTSPServerRegister.$(OBJ) RTSPClient.$(OBJ) RTSPCommon.$(OBJ) RTSPServerSupportingHTTPStreaming.$(OBJ) RTSPRegisterSender.$(OBJ)
+SIP_OBJS = SIPClient.$(OBJ)
+
+SESSION_OBJS = MediaSession.$(OBJ) ServerMediaSession.$(OBJ) PassiveServerMediaSubsession.$(OBJ) OnDemandServerMediaSubsession.$(OBJ) FileServerMediaSubsession.$(OBJ) MPEG4VideoFileServerMediaSubsession.$(OBJ) H264VideoFileServerMediaSubsession.$(OBJ) H265VideoFileServerMediaSubsession.$(OBJ) H263plusVideoFileServerMediaSubsession.$(OBJ) WAVAudioFileServerMediaSubsession.$(OBJ) AMRAudioFileServerMediaSubsession.$(OBJ) MP3AudioFileServerMediaSubsession.$(OBJ) MPEG1or2VideoFileServerMediaSubsession.$(OBJ) MPEG1or2FileServerDemux.$(OBJ) MPEG1or2DemuxedServerMediaSubsession.$(OBJ) MPEG2TransportFileServerMediaSubsession.$(OBJ) ADTSAudioFileServerMediaSubsession.$(OBJ) DVVideoFileServerMediaSubsession.$(OBJ) AC3AudioFileServerMediaSubsession.$(OBJ) MPEG2TransportUDPServerMediaSubsession.$(OBJ) ProxyServerMediaSession.$(OBJ)
+
+QUICKTIME_OBJS = QuickTimeFileSink.$(OBJ) QuickTimeGenericRTPSource.$(OBJ)
+AVI_OBJS = AVIFileSink.$(OBJ)
+
+MATROSKA_FILE_OBJS = MatroskaFile.$(OBJ) MatroskaFileParser.$(OBJ) EBMLNumber.$(OBJ) MatroskaDemuxedTrack.$(OBJ)
+MATROSKA_SERVER_MEDIA_SUBSESSION_OBJS = MatroskaFileServerMediaSubsession.$(OBJ) MP3AudioMatroskaFileServerMediaSubsession.$(OBJ)
+MATROSKA_RTSP_SERVER_OBJS = MatroskaFileServerDemux.$(OBJ) $(MATROSKA_SERVER_MEDIA_SUBSESSION_OBJS)
+MATROSKA_OBJS = $(MATROSKA_FILE_OBJS) $(MATROSKA_RTSP_SERVER_OBJS)
+
+OGG_FILE_OBJS = OggFile.$(OBJ) OggFileParser.$(OBJ) OggDemuxedTrack.$(OBJ)
+OGG_SERVER_MEDIA_SUBSESSION_OBJS = OggFileServerMediaSubsession.$(OBJ)
+OGG_RTSP_SERVER_OBJS = OggFileServerDemux.$(OBJ) $(OGG_SERVER_MEDIA_SUBSESSION_OBJS)
+OGG_OBJS = $(OGG_FILE_OBJS) $(OGG_RTSP_SERVER_OBJS)
+
+TRANSPORT_STREAM_DEMUX_OBJS = MPEG2TransportStreamDemux.$(OBJ) MPEG2TransportStreamDemuxedTrack.$(OBJ) MPEG2TransportStreamParser.$(OBJ) MPEG2TransportStreamParser_PAT.$(OBJ) MPEG2TransportStreamParser_PMT.$(OBJ) MPEG2TransportStreamParser_STREAM.$(OBJ)
+
+HLS_OBJS = HLSSegmenter.$(OBJ)
+
+SECURITY_OBJS = TLSState.$(OBJ) MIKEY.$(OBJ) SRTPCryptographicContext.$(OBJ) HMAC_SHA1.$(OBJ)
+
+MISC_OBJS = BitVector.$(OBJ) StreamParser.$(OBJ) DigestAuthentication.$(OBJ) ourMD5.$(OBJ) Base64.$(OBJ) Locale.$(OBJ)
+
+LIVEMEDIA_LIB_OBJS = Media.$(OBJ) $(MISC_SOURCE_OBJS) $(MISC_SINK_OBJS) $(MISC_FILTER_OBJS) $(RTP_OBJS) $(RTCP_OBJS) $(GENERIC_MEDIA_SERVER_OBJS) $(RTSP_OBJS) $(SIP_OBJS) $(SESSION_OBJS) $(QUICKTIME_OBJS) $(AVI_OBJS) $(TRANSPORT_STREAM_TRICK_PLAY_OBJS) $(MATROSKA_OBJS) $(OGG_OBJS) $(TRANSPORT_STREAM_DEMUX_OBJS) $(HLS_OBJS) $(SECURITY_OBJS) $(MISC_OBJS)
+
+$(LIVEMEDIA_LIB): $(LIVEMEDIA_LIB_OBJS) \
+    $(PLATFORM_SPECIFIC_LIB_OBJS)
+	$(LIBRARY_LINK)$@ $(LIBRARY_LINK_OPTS) \
+		$(LIVEMEDIA_LIB_OBJS)
+
+Media.$(CPP):		include/Media.hh
+include/Media.hh:	include/liveMedia_version.hh
+MediaSource.$(CPP):	include/MediaSource.hh
+include/MediaSource.hh:		include/Media.hh
+FramedSource.$(CPP):	include/FramedSource.hh
+include/FramedSource.hh:	include/MediaSource.hh
+FramedFileSource.$(CPP): include/FramedFileSource.hh
+include/FramedFileSource.hh:	include/FramedSource.hh
+FramedFilter.$(CPP):	include/FramedFilter.hh
+include/FramedFilter.hh:	include/FramedSource.hh
+RTPSource.$(CPP):	include/RTPSource.hh
+include/RTPSource.hh:		include/FramedSource.hh include/RTPInterface.hh include/SRTPCryptographicContext.hh
+include/RTPInterface.hh:	include/Media.hh
+MultiFramedRTPSource.$(CPP):	include/MultiFramedRTPSource.hh include/RTCP.hh
+include/MultiFramedRTPSource.hh:	include/RTPSource.hh
+SimpleRTPSource.$(CPP):	include/SimpleRTPSource.hh
+include/SimpleRTPSource.hh:	include/MultiFramedRTPSource.hh
+H261VideoRTPSource.$(CPP):	include/H261VideoRTPSource.hh
+include/H261VideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+H264VideoRTPSource.$(CPP):      include/H264VideoRTPSource.hh include/Base64.hh
+include/H264VideoRTPSource.hh:  include/MultiFramedRTPSource.hh
+H265VideoRTPSource.$(CPP):      include/H265VideoRTPSource.hh
+include/H265VideoRTPSource.hh:  include/MultiFramedRTPSource.hh
+QCELPAudioRTPSource.$(CPP):	include/QCELPAudioRTPSource.hh include/MultiFramedRTPSource.hh include/FramedFilter.hh
+include/QCELPAudioRTPSource.hh:		include/RTPSource.hh
+AMRAudioRTPSource.$(CPP):	include/AMRAudioRTPSource.hh include/MultiFramedRTPSource.hh
+include/AMRAudioRTPSource.hh:		include/RTPSource.hh include/AMRAudioSource.hh
+VorbisAudioRTPSource.$(CPP):	include/VorbisAudioRTPSource.hh include/Base64.hh
+include/VorbisAudioRTPSource.hh:	include/MultiFramedRTPSource.hh
+TheoraVideoRTPSource.$(CPP):	include/TheoraVideoRTPSource.hh
+include/TheoraVideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+VP8VideoRTPSource.$(CPP):	include/VP8VideoRTPSource.hh
+include/VP8VideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+VP9VideoRTPSource.$(CPP):	include/VP9VideoRTPSource.hh
+include/VP9VideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+RawVideoRTPSource.$(CPP):	include/RawVideoRTPSource.hh
+include/RawVideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+ByteStreamFileSource.$(CPP):	include/ByteStreamFileSource.hh include/InputFile.hh
+include/ByteStreamFileSource.hh:	include/FramedFileSource.hh
+ByteStreamMultiFileSource.$(CPP):	include/ByteStreamMultiFileSource.hh
+include/ByteStreamMultiFileSource.hh:	include/ByteStreamFileSource.hh
+ByteStreamMemoryBufferSource.$(CPP):	include/ByteStreamMemoryBufferSource.hh
+include/ByteStreamMemoryBufferSource.hh:	include/FramedSource.hh
+BasicUDPSource.$(CPP):		include/BasicUDPSource.hh
+include/BasicUDPSource.hh:	include/FramedSource.hh
+DeviceSource.$(CPP):	include/DeviceSource.hh
+include/DeviceSource.hh:	include/FramedSource.hh
+AudioInputDevice.$(CPP):	include/AudioInputDevice.hh
+include/AudioInputDevice.hh:	include/FramedSource.hh
+WAVAudioFileSource.$(CPP):	include/WAVAudioFileSource.hh include/InputFile.hh
+include/WAVAudioFileSource.hh:	include/AudioInputDevice.hh
+MPEG1or2Demux.$(CPP):	include/MPEG1or2Demux.hh include/MPEG1or2DemuxedElementaryStream.hh StreamParser.hh
+include/MPEG1or2Demux.hh:		include/FramedSource.hh
+include/MPEG1or2DemuxedElementaryStream.hh:	include/MPEG1or2Demux.hh
+StreamParser.hh:	include/FramedSource.hh
+MPEG1or2DemuxedElementaryStream.$(CPP):	include/MPEG1or2DemuxedElementaryStream.hh
+MPEGVideoStreamFramer.$(CPP):	MPEGVideoStreamParser.hh
+MPEGVideoStreamParser.hh:	StreamParser.hh include/MPEGVideoStreamFramer.hh
+include/MPEGVideoStreamFramer.hh:	include/FramedFilter.hh
+MPEG1or2VideoStreamFramer.$(CPP):	include/MPEG1or2VideoStreamFramer.hh MPEGVideoStreamParser.hh
+include/MPEG1or2VideoStreamFramer.hh:	include/MPEGVideoStreamFramer.hh
+MPEG1or2VideoStreamDiscreteFramer.$(CPP):	include/MPEG1or2VideoStreamDiscreteFramer.hh
+include/MPEG1or2VideoStreamDiscreteFramer.hh:	include/MPEG1or2VideoStreamFramer.hh
+MPEG4VideoStreamFramer.$(CPP):	include/MPEG4VideoStreamFramer.hh MPEGVideoStreamParser.hh include/MPEG4LATMAudioRTPSource.hh
+include/MPEG4VideoStreamFramer.hh:	include/MPEGVideoStreamFramer.hh
+MPEG4VideoStreamDiscreteFramer.$(CPP):	include/MPEG4VideoStreamDiscreteFramer.hh
+include/MPEG4VideoStreamDiscreteFramer.hh:	include/MPEG4VideoStreamFramer.hh
+H264or5VideoStreamFramer.$(CPP):	include/H264or5VideoStreamFramer.hh MPEGVideoStreamParser.hh include/BitVector.hh
+include/H264or5VideoStreamFramer.hh:	include/MPEGVideoStreamFramer.hh
+H264or5VideoStreamDiscreteFramer.$(CPP):	include/H264or5VideoStreamDiscreteFramer.hh
+include/H264or5VideoStreamDiscreteFramer.hh:	include/H264or5VideoStreamFramer.hh
+H264VideoStreamFramer.$(CPP):	include/H264VideoStreamFramer.hh
+include/H264VideoStreamFramer.hh:	include/H264or5VideoStreamFramer.hh
+H264VideoStreamDiscreteFramer.$(CPP):	include/H264VideoStreamDiscreteFramer.hh
+include/H264VideoStreamDiscreteFramer.hh:	include/H264VideoStreamFramer.hh
+H265VideoStreamFramer.$(CPP):	include/H265VideoStreamFramer.hh
+include/H265VideoStreamFramer.hh:	include/H264or5VideoStreamFramer.hh
+H265VideoStreamDiscreteFramer.$(CPP):	include/H265VideoStreamDiscreteFramer.hh
+include/H265VideoStreamDiscreteFramer.hh:	include/H265VideoStreamFramer.hh
+MPEGVideoStreamParser.$(CPP):	MPEGVideoStreamParser.hh
+MPEG1or2AudioStreamFramer.$(CPP):	include/MPEG1or2AudioStreamFramer.hh StreamParser.hh MP3Internals.hh
+include/MPEG1or2AudioStreamFramer.hh:	include/FramedFilter.hh
+MPEG1or2AudioRTPSource.$(CPP):	include/MPEG1or2AudioRTPSource.hh
+include/MPEG1or2AudioRTPSource.hh:	include/MultiFramedRTPSource.hh
+MPEG4LATMAudioRTPSource.$(CPP):	include/MPEG4LATMAudioRTPSource.hh
+include/MPEG4LATMAudioRTPSource.hh:	include/MultiFramedRTPSource.hh
+MPEG4ESVideoRTPSource.$(CPP):	include/MPEG4ESVideoRTPSource.hh
+include/MPEG4ESVideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+MPEG4GenericRTPSource.$(CPP):	include/MPEG4GenericRTPSource.hh include/BitVector.hh include/MPEG4LATMAudioRTPSource.hh
+include/MPEG4GenericRTPSource.hh:	include/MultiFramedRTPSource.hh
+MP3FileSource.$(CPP):	include/MP3FileSource.hh MP3StreamState.hh include/InputFile.hh
+include/MP3FileSource.hh:	include/FramedFileSource.hh
+MP3StreamState.hh:	MP3Internals.hh
+MP3Internals.hh:	include/BitVector.hh
+MP3Transcoder.$(CPP):	include/MP3ADU.hh include/MP3Transcoder.hh
+include/MP3ADU.hh:		include/FramedFilter.hh
+include/MP3Transcoder.hh:	include/MP3ADU.hh include/MP3ADUTranscoder.hh
+include/MP3ADUTranscoder.hh:	include/FramedFilter.hh
+MP3ADU.$(CPP):		include/MP3ADU.hh MP3ADUdescriptor.hh MP3Internals.hh
+MP3ADUdescriptor.$(CPP):	MP3ADUdescriptor.hh
+MP3ADUinterleaving.$(CPP):	include/MP3ADUinterleaving.hh MP3ADUdescriptor.hh
+include/MP3ADUinterleaving.hh:	include/FramedFilter.hh
+MP3ADUTranscoder.$(CPP):	include/MP3ADUTranscoder.hh MP3Internals.hh
+MP3StreamState.$(CPP):	MP3StreamState.hh include/InputFile.hh
+MP3Internals.$(CPP):	MP3InternalsHuffman.hh
+MP3InternalsHuffman.hh:	MP3Internals.hh
+MP3InternalsHuffman.$(CPP):	MP3InternalsHuffman.hh
+MP3InternalsHuffmanTable.$(CPP):	MP3InternalsHuffman.hh
+MP3ADURTPSource.$(CPP):	include/MP3ADURTPSource.hh MP3ADUdescriptor.hh
+include/MP3ADURTPSource.hh:	include/MultiFramedRTPSource.hh
+MPEG1or2VideoRTPSource.$(CPP):	include/MPEG1or2VideoRTPSource.hh
+include/MPEG1or2VideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+MPEG2TransportStreamMultiplexor.$(CPP):	include/MPEG2TransportStreamMultiplexor.hh
+include/MPEG2TransportStreamMultiplexor.hh:	include/FramedSource.hh include/MPEG1or2Demux.hh
+MPEG2TransportStreamFromPESSource.$(CPP):	include/MPEG2TransportStreamFromPESSource.hh
+include/MPEG2TransportStreamFromPESSource.hh:	include/MPEG2TransportStreamMultiplexor.hh include/MPEG1or2DemuxedElementaryStream.hh
+MPEG2TransportStreamFromESSource.$(CPP):	include/MPEG2TransportStreamFromESSource.hh
+include/MPEG2TransportStreamFromESSource.hh:	include/MPEG2TransportStreamMultiplexor.hh
+MPEG2TransportStreamFramer.$(CPP):	include/MPEG2TransportStreamFramer.hh
+include/MPEG2TransportStreamFramer.hh:	include/FramedFilter.hh include/MPEG2TransportStreamIndexFile.hh
+MPEG2TransportStreamAccumulator.$(CPP):	include/MPEG2TransportStreamAccumulator.hh
+include/MPEG2TransportStreamAccumulator.hh:	include/FramedFilter.hh
+ADTSAudioFileSource.$(CPP):	include/ADTSAudioFileSource.hh include/InputFile.hh
+JPEGVideoSource.$(CPP):		include/JPEGVideoSource.hh
+include/JPEGVideoSource.hh:	include/FramedSource.hh
+JPEGVideoRTPSource.$(CPP):	include/JPEGVideoRTPSource.hh
+include/JPEGVideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+#JPEG2000VideoStreamFramer.$(CPP):	include/JPEG2000VideoStreamFramer.hh JPEG2000VideoStreamParser.hh
+#include/JPEG2000VideoStreamFramer.hh:	include/MPEGVideoStreamFramer.hh
+#JPEG2000VideoStreamParser.hh:		StreamParser.hh include/MPEGVideoStreamFramer.hh
+#JPEG2000VideoStreamParser.$(CPP):	JPEG2000VideoStreamParser.hh
+JPEG2000VideoRTPSource.$(CPP):		include/JPEG2000VideoRTPSource.hh
+include/JPEG2000VideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+include/ADTSAudioFileSource.hh:	include/FramedFileSource.hh
+H263plusVideoRTPSource.$(CPP):	include/H263plusVideoRTPSource.hh
+include/H263plusVideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+H263plusVideoStreamFramer.$(CPP):	include/H263plusVideoStreamFramer.hh H263plusVideoStreamParser.hh
+include/H263plusVideoStreamFramer.hh:	include/FramedFilter.hh
+H263plusVideoStreamParser.hh:	StreamParser.hh
+H263plusVideoStreamParser.$(CPP):	H263plusVideoStreamParser.hh include/H263plusVideoStreamFramer.hh
+AC3AudioStreamFramer.$(CPP):	include/AC3AudioStreamFramer.hh StreamParser.hh
+include/AC3AudioStreamFramer.hh:	include/FramedFilter.hh
+AC3AudioRTPSource.$(CPP):	include/AC3AudioRTPSource.hh
+include/AC3AudioRTPSource.hh:	include/MultiFramedRTPSource.hh
+DVVideoRTPSource.$(CPP):	include/DVVideoRTPSource.hh
+include/DVVideoRTPSource.hh:	include/MultiFramedRTPSource.hh
+AMRAudioSource.$(CPP):	include/AMRAudioSource.hh
+include/AMRAudioSource.hh:	include/FramedSource.hh
+AMRAudioFileSource.$(CPP):	include/AMRAudioFileSource.hh include/InputFile.hh
+include/AMRAudioFileSource.hh:	include/AMRAudioSource.hh
+InputFile.$(CPP):		include/InputFile.hh
+StreamReplicator.$(CPP):	include/StreamReplicator.hh
+include/StreamReplicator.hh:	include/FramedSource.hh
+MediaSink.$(CPP):	include/MediaSink.hh
+include/MediaSink.hh:		include/FramedSource.hh
+FileSink.$(CPP):	include/FileSink.hh include/OutputFile.hh
+include/FileSink.hh:		include/MediaSink.hh
+BasicUDPSink.$(CPP):	include/BasicUDPSink.hh
+include/BasicUDPSink.hh:	include/MediaSink.hh
+AMRAudioFileSink.$(CPP):	include/AMRAudioFileSink.hh include/AMRAudioSource.hh include/OutputFile.hh
+include/AMRAudioFileSink.hh:	include/FileSink.hh
+H264or5VideoFileSink.$(CPP):	include/H264or5VideoFileSink.hh include/H264VideoRTPSource.hh
+include/H264or5VideoFileSink.hh:   include/FileSink.hh
+H264VideoFileSink.$(CPP):       include/H264VideoFileSink.hh include/OutputFile.hh
+include/H264VideoFileSink.hh:   include/H264or5VideoFileSink.hh
+H265VideoFileSink.$(CPP):       include/H265VideoFileSink.hh include/OutputFile.hh
+include/H265VideoFileSink.hh:   include/H264or5VideoFileSink.hh
+OggFileSink.$(CPP):		include/OggFileSink.hh include/OutputFile.hh include/VorbisAudioRTPSource.hh include/MPEG2TransportStreamMultiplexor.hh include/FramedSource.hh
+include/OggFileSink.hh:		include/FileSink.hh
+RTPSink.$(CPP):			include/RTPSink.hh
+include/RTPSink.hh:		include/MediaSink.hh include/RTPInterface.hh
+MultiFramedRTPSink.$(CPP):	include/MultiFramedRTPSink.hh
+include/MultiFramedRTPSink.hh:		include/RTPSink.hh
+AudioRTPSink.$(CPP):		include/AudioRTPSink.hh
+include/AudioRTPSink.hh:	include/MultiFramedRTPSink.hh
+VideoRTPSink.$(CPP):		include/VideoRTPSink.hh
+include/VideoRTPSink.hh:	include/MultiFramedRTPSink.hh
+TextRTPSink.$(CPP):		include/TextRTPSink.hh
+include/TextRTPSink.hh:		include/MultiFramedRTPSink.hh
+RTPInterface.$(CPP):		include/RTPInterface.hh
+MPEG1or2AudioRTPSink.$(CPP):	include/MPEG1or2AudioRTPSink.hh
+include/MPEG1or2AudioRTPSink.hh:	include/AudioRTPSink.hh
+MP3ADURTPSink.$(CPP):	include/MP3ADURTPSink.hh
+include/MP3ADURTPSink.hh:	include/AudioRTPSink.hh
+MPEG1or2VideoRTPSink.$(CPP):	include/MPEG1or2VideoRTPSink.hh include/MPEG1or2VideoStreamFramer.hh
+include/MPEG1or2VideoRTPSink.hh:	include/VideoRTPSink.hh
+MPEG4LATMAudioRTPSink.$(CPP):	include/MPEG4LATMAudioRTPSink.hh
+include/MPEG4LATMAudioRTPSink.hh:	include/AudioRTPSink.hh
+MPEG4GenericRTPSink.$(CPP):	include/MPEG4GenericRTPSink.hh include/Locale.hh
+include/MPEG4GenericRTPSink.hh:	include/MultiFramedRTPSink.hh
+MPEG4ESVideoRTPSink.$(CPP):	include/MPEG4ESVideoRTPSink.hh include/MPEG4VideoStreamFramer.hh include/MPEG4LATMAudioRTPSource.hh
+include/MPEG4ESVideoRTPSink.hh: include/VideoRTPSink.hh
+JPEGVideoRTPSink.$(CPP):	include/JPEGVideoRTPSink.hh include/JPEGVideoSource.hh
+include/JPEGVideoRTPSink.hh:	include/VideoRTPSink.hh
+JPEG2000VideoRTPSink.$(CPP):	include/JPEG2000VideoRTPSink.hh
+include/JPEG2000VideoRTPSink.hh:	include/VideoRTPSink.hh
+H263plusVideoRTPSink.$(CPP):	include/H263plusVideoRTPSink.hh
+include/H263plusVideoRTPSink.hh:	include/VideoRTPSink.hh
+H264or5VideoRTPSink.$(CPP):	include/H264or5VideoRTPSink.hh include/H264or5VideoStreamFramer.hh
+include/H264or5VideoRTPSink.hh:	include/VideoRTPSink.hh include/FramedFilter.hh
+H264VideoRTPSink.$(CPP):	include/H264VideoRTPSink.hh include/H264VideoStreamFramer.hh include/Base64.hh include/H264VideoRTPSource.hh
+include/H264VideoRTPSink.hh:	include/H264or5VideoRTPSink.hh
+H265VideoRTPSink.$(CPP):	include/H265VideoRTPSink.hh include/H265VideoStreamFramer.hh include/Base64.hh include/BitVector.hh include/H264VideoRTPSource.hh
+include/H265VideoRTPSink.hh:	include/H264or5VideoRTPSink.hh
+DVVideoRTPSink.$(CPP):	include/DVVideoRTPSink.hh
+include/DVVideoRTPSink.hh:	include/VideoRTPSink.hh include/DVVideoStreamFramer.hh
+include/DVVideoStreamFramer.hh:	include/FramedFilter.hh
+AC3AudioRTPSink.$(CPP):		include/AC3AudioRTPSink.hh
+include/AC3AudioRTPSink.hh:	include/AudioRTPSink.hh
+VorbisAudioRTPSink.$(CPP):	include/VorbisAudioRTPSink.hh include/Base64.hh include/VorbisAudioRTPSource.hh
+include/VorbisAudioRTPSink.hh:	include/AudioRTPSink.hh
+TheoraVideoRTPSink.$(CPP):	include/TheoraVideoRTPSink.hh include/Base64.hh include/VorbisAudioRTPSource.hh include/VorbisAudioRTPSink.hh
+include/TheoraVideoRTPSink.hh:	include/VideoRTPSink.hh
+RawVideoRTPSink.$(CPP):	include/RawVideoRTPSink.hh
+include/RawVideoRTPSink.hh:	include/VideoRTPSink.hh
+VP8VideoRTPSink.$(CPP):		include/VP8VideoRTPSink.hh
+include/VP8VideoRTPSink.hh:	include/VideoRTPSink.hh
+VP9VideoRTPSink.$(CPP):		include/VP9VideoRTPSink.hh
+include/VP9VideoRTPSink.hh:	include/VideoRTPSink.hh
+GSMAudioRTPSink.$(CPP):		include/GSMAudioRTPSink.hh
+include/GSMAudioRTPSink.hh:	include/AudioRTPSink.hh
+SimpleRTPSink.$(CPP):		include/SimpleRTPSink.hh
+include/SimpleRTPSink.hh:	include/MultiFramedRTPSink.hh
+AMRAudioRTPSink.$(CPP):		include/AMRAudioRTPSink.hh include/AMRAudioSource.hh
+include/AMRAudioRTPSink.hh:	include/AudioRTPSink.hh
+T140TextRTPSink.$(CPP):		include/T140TextRTPSink.hh
+include/T140TextRTPSink.hh:	include/TextRTPSink.hh include/FramedFilter.hh
+TCPStreamSink.$(CPP):		include/TCPStreamSink.hh
+include/TCPStreamSink.hh:	include/MediaSink.hh
+OutputFile.$(CPP):		include/OutputFile.hh
+uLawAudioFilter.$(CPP):		include/uLawAudioFilter.hh
+include/uLawAudioFilter.hh:	include/FramedFilter.hh
+MPEG2IndexFromTransportStream.$(CPP):	include/MPEG2IndexFromTransportStream.hh
+include/MPEG2IndexFromTransportStream.hh:	include/FramedFilter.hh
+MPEG2TransportStreamIndexFile.$(CPP):	include/MPEG2TransportStreamIndexFile.hh include/InputFile.hh
+include/MPEG2TransportStreamIndexFile.hh:	include/Media.hh
+MPEG2TransportStreamTrickModeFilter.$(CPP):	include/MPEG2TransportStreamTrickModeFilter.hh include/ByteStreamFileSource.hh
+include/MPEG2TransportStreamTrickModeFilter.hh:	include/FramedFilter.hh include/MPEG2TransportStreamIndexFile.hh
+RTCP.$(CPP):		include/RTCP.hh rtcp_from_spec.h
+include/RTCP.hh:		include/RTPSink.hh include/RTPSource.hh include/SRTPCryptographicContext.hh
+rtcp_from_spec.$(C):	rtcp_from_spec.h
+GenericMediaServer.$(CPP):	include/GenericMediaServer.hh
+include/GenericMediaServer.hh:	include/ServerMediaSession.hh
+RTSPServer.$(CPP):	include/RTSPServer.hh include/RTSPCommon.hh include/RTSPRegisterSender.hh include/ProxyServerMediaSession.hh include/Base64.hh
+include/RTSPServer.hh:		include/GenericMediaServer.hh include/DigestAuthentication.hh
+RTSPServerRegister.$(CPP):	include/RTSPServer.hh
+include/ServerMediaSession.hh:	include/RTCP.hh
+RTSPClient.$(CPP):	include/RTSPClient.hh  include/RTSPCommon.hh include/Base64.hh include/Locale.hh include/ourMD5.hh
+include/RTSPClient.hh:		include/MediaSession.hh include/DigestAuthentication.hh
+RTSPCommon.$(CPP):	include/RTSPCommon.hh include/Locale.hh
+RTSPServerSupportingHTTPStreaming.$(CPP):	include/RTSPServerSupportingHTTPStreaming.hh include/RTSPCommon.hh
+include/RTSPServerSupportingHTTPStreaming.hh:	include/RTSPServer.hh include/ByteStreamMemoryBufferSource.hh include/TCPStreamSink.hh
+RTSPRegisterSender.$(CPP):	include/RTSPRegisterSender.hh
+include/RTSPRegisterSender.hh:	include/RTSPClient.hh
+SIPClient.$(CPP):	include/SIPClient.hh
+include/SIPClient.hh:		include/MediaSession.hh include/DigestAuthentication.hh
+MediaSession.$(CPP):	include/liveMedia.hh include/Locale.hh include/Base64.hh
+include/MediaSession.hh:	include/RTCP.hh include/FramedFilter.hh include/SRTPCryptographicContext.hh
+ServerMediaSession.$(CPP):	include/ServerMediaSession.hh
+PassiveServerMediaSubsession.$(CPP):	include/PassiveServerMediaSubsession.hh
+include/PassiveServerMediaSubsession.hh:	include/ServerMediaSession.hh include/RTPSink.hh include/RTCP.hh
+OnDemandServerMediaSubsession.$(CPP):	include/OnDemandServerMediaSubsession.hh
+include/OnDemandServerMediaSubsession.hh:	include/ServerMediaSession.hh include/RTPSink.hh include/BasicUDPSink.hh include/RTCP.hh
+FileServerMediaSubsession.$(CPP):	include/FileServerMediaSubsession.hh
+include/FileServerMediaSubsession.hh:	include/OnDemandServerMediaSubsession.hh
+MPEG4VideoFileServerMediaSubsession.$(CPP):	include/MPEG4VideoFileServerMediaSubsession.hh include/MPEG4ESVideoRTPSink.hh include/ByteStreamFileSource.hh include/MPEG4VideoStreamFramer.hh
+include/MPEG4VideoFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+H264VideoFileServerMediaSubsession.$(CPP):	include/H264VideoFileServerMediaSubsession.hh include/H264VideoRTPSink.hh include/ByteStreamFileSource.hh include/H264VideoStreamFramer.hh
+include/H264VideoFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+H265VideoFileServerMediaSubsession.$(CPP):	include/H265VideoFileServerMediaSubsession.hh include/H265VideoRTPSink.hh include/ByteStreamFileSource.hh include/H265VideoStreamFramer.hh
+include/H265VideoFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+H263plusVideoFileServerMediaSubsession.$(CPP):	include/H263plusVideoFileServerMediaSubsession.hh include/H263plusVideoRTPSink.hh include/ByteStreamFileSource.hh include/H263plusVideoStreamFramer.hh
+include/H263plusVideoFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+WAVAudioFileServerMediaSubsession.$(CPP):	include/WAVAudioFileServerMediaSubsession.hh include/WAVAudioFileSource.hh include/uLawAudioFilter.hh include/SimpleRTPSink.hh
+include/WAVAudioFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+AMRAudioFileServerMediaSubsession.$(CPP):	include/AMRAudioFileServerMediaSubsession.hh include/AMRAudioRTPSink.hh include/AMRAudioFileSource.hh
+include/AMRAudioFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+MP3AudioFileServerMediaSubsession.$(CPP):	include/MP3AudioFileServerMediaSubsession.hh include/MPEG1or2AudioRTPSink.hh include/MP3ADURTPSink.hh include/MP3FileSource.hh include/MP3ADU.hh
+include/MP3AudioFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh include/MP3ADUinterleaving.hh
+MPEG1or2VideoFileServerMediaSubsession.$(CPP):	include/MPEG1or2VideoFileServerMediaSubsession.hh include/MPEG1or2VideoRTPSink.hh include/ByteStreamFileSource.hh include/MPEG1or2VideoStreamFramer.hh
+include/MPEG1or2VideoFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+MPEG1or2FileServerDemux.$(CPP):	include/MPEG1or2FileServerDemux.hh include/MPEG1or2DemuxedServerMediaSubsession.hh include/ByteStreamFileSource.hh
+include/MPEG1or2FileServerDemux.hh:	include/ServerMediaSession.hh include/MPEG1or2DemuxedElementaryStream.hh
+MPEG1or2DemuxedServerMediaSubsession.$(CPP): include/MPEG1or2DemuxedServerMediaSubsession.hh include/MPEG1or2AudioStreamFramer.hh include/MPEG1or2AudioRTPSink.hh include/MPEG1or2VideoStreamFramer.hh include/MPEG1or2VideoRTPSink.hh include/AC3AudioStreamFramer.hh include/AC3AudioRTPSink.hh include/ByteStreamFileSource.hh
+include/MPEG1or2DemuxedServerMediaSubsession.hh: include/OnDemandServerMediaSubsession.hh include/MPEG1or2FileServerDemux.hh
+MPEG2TransportFileServerMediaSubsession.$(CPP):	include/MPEG2TransportFileServerMediaSubsession.hh include/SimpleRTPSink.hh
+include/MPEG2TransportFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh include/MPEG2TransportStreamFramer.hh include/ByteStreamFileSource.hh include/MPEG2TransportStreamTrickModeFilter.hh include/MPEG2TransportStreamFromESSource.hh
+ADTSAudioFileServerMediaSubsession.$(CPP):	include/ADTSAudioFileServerMediaSubsession.hh include/ADTSAudioFileSource.hh include/MPEG4GenericRTPSink.hh
+include/ADTSAudioFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+DVVideoFileServerMediaSubsession.$(CPP):	include/DVVideoFileServerMediaSubsession.hh include/DVVideoRTPSink.hh include/ByteStreamFileSource.hh include/DVVideoStreamFramer.hh
+include/DVVideoFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+AC3AudioFileServerMediaSubsession.$(CPP):	include/AC3AudioFileServerMediaSubsession.hh include/AC3AudioRTPSink.hh include/ByteStreamFileSource.hh include/AC3AudioStreamFramer.hh
+include/AC3AudioFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+#JPEG2000VideoFileServerMediaSubsession.$(CPP):	include/JPEG2000VideoFileServerMediaSubsession.hh
+#include/JPEG2000VideoFileServerMediaSubsession.hh:	include/FileServerMediaSubsession.hh
+MPEG2TransportUDPServerMediaSubsession.$(CPP):	include/MPEG2TransportUDPServerMediaSubsession.hh include/BasicUDPSource.hh include/SimpleRTPSource.hh include/MPEG2TransportStreamFramer.hh include/SimpleRTPSink.hh
+include/MPEG2TransportUDPServerMediaSubsession.hh:	include/OnDemandServerMediaSubsession.hh
+ProxyServerMediaSession.$(CPP):		include/liveMedia.hh include/RTSPCommon.hh
+include/ProxyServerMediaSession.hh:	include/ServerMediaSession.hh include/MediaSession.hh include/RTSPClient.hh include/MediaTranscodingTable.hh
+include/MediaTranscodingTable.hh:	include/FramedFilter.hh include/MediaSession.hh
+QuickTimeFileSink.$(CPP):	include/QuickTimeFileSink.hh include/InputFile.hh include/OutputFile.hh include/QuickTimeGenericRTPSource.hh include/H263plusVideoRTPSource.hh include/MPEG4GenericRTPSource.hh include/MPEG4LATMAudioRTPSource.hh
+include/QuickTimeFileSink.hh:	include/MediaSession.hh
+QuickTimeGenericRTPSource.$(CPP):	include/QuickTimeGenericRTPSource.hh
+include/QuickTimeGenericRTPSource.hh:	include/MultiFramedRTPSource.hh
+AVIFileSink.$(CPP):	include/AVIFileSink.hh include/InputFile.hh include/OutputFile.hh
+include/AVIFileSink.hh:	include/MediaSession.hh
+MatroskaFile.$(CPP): MatroskaFileParser.hh MatroskaDemuxedTrack.hh include/ByteStreamFileSource.hh include/H264VideoStreamDiscreteFramer.hh include/H265VideoStreamDiscreteFramer.hh include/MPEG1or2AudioRTPSink.hh include/MPEG4GenericRTPSink.hh include/AC3AudioRTPSink.hh include/SimpleRTPSink.hh include/VorbisAudioRTPSink.hh include/H264VideoRTPSink.hh include/H265VideoRTPSink.hh include/VP8VideoRTPSink.hh include/VP9VideoRTPSink.hh include/T140TextRTPSink.hh include/Base64.hh include/H264VideoFileSink.hh include/H265VideoFileSink.hh include/AMRAudioFileSink.hh include/OggFileSink.hh
+MatroskaFileParser.hh:	StreamParser.hh include/MatroskaFile.hh EBMLNumber.hh
+include/MatroskaFile.hh: include/RTPSink.hh include/FileSink.hh
+MatroskaDemuxedTrack.hh:	include/FramedSource.hh
+MatroskaFileParser.$(CPP): MatroskaFileParser.hh MatroskaDemuxedTrack.hh include/ByteStreamFileSource.hh
+EBMLNumber.$(CPP): EBMLNumber.hh
+MatroskaDemuxedTrack.$(CPP): MatroskaDemuxedTrack.hh include/MatroskaFile.hh
+MatroskaFileServerMediaSubsession.$(CPP): MatroskaFileServerMediaSubsession.hh MatroskaDemuxedTrack.hh include/FramedFilter.hh
+MatroskaFileServerMediaSubsession.hh: include/FileServerMediaSubsession.hh include/MatroskaFileServerDemux.hh
+MP3AudioMatroskaFileServerMediaSubsession.$(CPP): MP3AudioMatroskaFileServerMediaSubsession.hh MatroskaDemuxedTrack.hh
+MP3AudioMatroskaFileServerMediaSubsession.hh: include/MP3AudioFileServerMediaSubsession.hh include/MatroskaFileServerDemux.hh
+MatroskaFileServerDemux.$(CPP): include/MatroskaFileServerDemux.hh MP3AudioMatroskaFileServerMediaSubsession.hh MatroskaFileServerMediaSubsession.hh
+include/MatroskaFileServerDemux.hh: include/ServerMediaSession.hh include/MatroskaFile.hh
+OggFile.$(CPP): OggFileParser.hh OggDemuxedTrack.hh include/ByteStreamFileSource.hh include/VorbisAudioRTPSink.hh include/SimpleRTPSink.hh include/TheoraVideoRTPSink.hh
+OggFileParser.hh:	StreamParser.hh include/OggFile.hh
+include/OggFile.hh: include/RTPSink.hh
+OggDemuxedTrack.hh:	include/FramedSource.hh
+OggFileParser.$(CPP): OggFileParser.hh OggDemuxedTrack.hh
+OggDemuxedTrack.$(CPP): OggDemuxedTrack.hh include/OggFile.hh
+OggFileServerMediaSubsession.$(CPP): OggFileServerMediaSubsession.hh OggDemuxedTrack.hh include/FramedFilter.hh
+OggFileServerMediaSubsession.hh: include/FileServerMediaSubsession.hh include/OggFileServerDemux.hh
+OggFileServerDemux.$(CPP): include/OggFileServerDemux.hh OggFileServerMediaSubsession.hh
+include/OggFileServerDemux.hh: include/ServerMediaSession.hh include/OggFile.hh
+MPEG2TransportStreamDemux.$(CPP): include/MPEG2TransportStreamDemux.hh MPEG2TransportStreamParser.hh
+include/MPEG2TransportStreamDemux.hh: include/FramedSource.hh
+MPEG2TransportStreamParser.hh: StreamParser.hh MPEG2TransportStreamDemuxedTrack.hh include/MediaSink.hh
+MPEG2TransportStreamDemuxedTrack.hh: include/MPEG2TransportStreamDemux.hh
+MPEG2TransportStreamDemuxedTrack.$(CPP): MPEG2TransportStreamParser.hh
+MPEG2TransportStreamParser.$(CPP): MPEG2TransportStreamParser.hh
+MPEG2TransportStreamParser_PAT.$(CPP): MPEG2TransportStreamParser.hh
+MPEG2TransportStreamParser_PMT.$(CPP): MPEG2TransportStreamParser.hh
+MPEG2TransportStreamParser_STREAM.$(CPP): MPEG2TransportStreamParser.hh include/FileSink.hh
+HLSSegmenter.$(CPP): include/HLSSegmenter.hh include/OutputFile.hh include/MPEG2TransportStreamMultiplexor.hh
+include/HLSSegmenter.hh: include/MediaSink.hh
+TLSState.$(CPP):		include/TLSState.hh include/RTSPClient.hh
+MIKEY.$(CPP):		 include/MIKEY.hh
+HMAC_SHA1.$(CPP):	include/HMAC_SHA1.hh
+include/SRTPCryptographicContext.hh:	include/MIKEY.hh
+SRTPCryptographicContext.$(CPP):	include/SRTPCryptographicContext.hh include/HMAC_SHA1.hh
+include/HMAC_SHA1.hh:	include/HMAC_hash.hh
+BitVector.$(CPP):	include/BitVector.hh
+StreamParser.$(CPP):	StreamParser.hh
+DigestAuthentication.$(CPP):	include/DigestAuthentication.hh include/ourMD5.hh
+ourMD5.$(CPP):	include/ourMD5.hh
+Base64.$(CPP):	include/Base64.hh
+Locale.$(CPP):	include/Locale.hh
+
+include/liveMedia.hh:: include/JPEG2000VideoRTPSource.hh include/JPEG2000VideoRTPSink.hh
+#include/liveMedia.hh:: include/JPEG2000VideoStreamFramer.hh include/JPEG2000VideoFileServerMediaSubsession.hh
+
+include/liveMedia.hh:: include/MPEG1or2AudioRTPSink.hh include/MP3ADURTPSink.hh include/MPEG1or2VideoRTPSink.hh include/MPEG4ESVideoRTPSink.hh include/BasicUDPSink.hh include/AMRAudioFileSink.hh include/H264VideoFileSink.hh include/H265VideoFileSink.hh include/OggFileSink.hh include/GSMAudioRTPSink.hh include/H263plusVideoRTPSink.hh include/H264VideoRTPSink.hh include/H265VideoRTPSink.hh include/DVVideoRTPSource.hh include/DVVideoRTPSink.hh include/DVVideoStreamFramer.hh include/H264VideoStreamFramer.hh include/H265VideoStreamFramer.hh include/H264VideoStreamDiscreteFramer.hh include/H265VideoStreamDiscreteFramer.hh include/JPEGVideoRTPSink.hh include/SimpleRTPSink.hh include/uLawAudioFilter.hh include/MPEG2IndexFromTransportStream.hh include/MPEG2TransportStreamTrickModeFilter.hh include/ByteStreamMultiFileSource.hh include/ByteStreamMemoryBufferSource.hh include/BasicUDPSource.hh include/SimpleRTPSource.hh include/MPEG1or2AudioRTPSource.hh include/MPEG4LATMAudioRTPSource.hh include/MPEG4LATMAudioRTPSink.hh include/MPEG4ESVideoRTPSource.hh include/MPEG4GenericRTPSource.hh include/MP3ADURTPSource.hh include/QCELPAudioRTPSource.hh include/AMRAudioRTPSource.hh include/JPEGVideoRTPSource.hh include/JPEGVideoSource.hh include/MPEG1or2VideoRTPSource.hh include/VorbisAudioRTPSource.hh include/TheoraVideoRTPSource.hh include/VP8VideoRTPSource.hh include/VP9VideoRTPSource.hh include/RawVideoRTPSource.hh
+
+include/liveMedia.hh::	include/MPEG2TransportStreamFromPESSource.hh include/MPEG2TransportStreamFromESSource.hh include/MPEG2TransportStreamFramer.hh include/ADTSAudioFileSource.hh include/H261VideoRTPSource.hh include/H263plusVideoRTPSource.hh include/H264VideoRTPSource.hh include/H265VideoRTPSource.hh include/MP3FileSource.hh include/MP3ADU.hh include/MP3ADUinterleaving.hh include/MP3Transcoder.hh include/MPEG1or2DemuxedElementaryStream.hh include/MPEG1or2AudioStreamFramer.hh include/MPEG1or2VideoStreamDiscreteFramer.hh include/MPEG4VideoStreamDiscreteFramer.hh include/H263plusVideoStreamFramer.hh include/AC3AudioStreamFramer.hh include/AC3AudioRTPSource.hh include/AC3AudioRTPSink.hh include/VorbisAudioRTPSink.hh include/TheoraVideoRTPSink.hh include/VP8VideoRTPSink.hh include/VP9VideoRTPSink.hh include/MPEG4GenericRTPSink.hh include/DeviceSource.hh include/AudioInputDevice.hh include/WAVAudioFileSource.hh include/StreamReplicator.hh include/RTSPRegisterSender.hh
+
+include/liveMedia.hh:: include/RTSPServerSupportingHTTPStreaming.hh include/RTSPClient.hh include/SIPClient.hh include/QuickTimeFileSink.hh include/QuickTimeGenericRTPSource.hh include/AVIFileSink.hh include/PassiveServerMediaSubsession.hh include/MPEG4VideoFileServerMediaSubsession.hh include/H264VideoFileServerMediaSubsession.hh include/H265VideoFileServerMediaSubsession.hh include/WAVAudioFileServerMediaSubsession.hh include/AMRAudioFileServerMediaSubsession.hh include/AMRAudioFileSource.hh include/AMRAudioRTPSink.hh include/T140TextRTPSink.hh include/TCPStreamSink.hh include/MP3AudioFileServerMediaSubsession.hh include/MPEG1or2VideoFileServerMediaSubsession.hh include/MPEG1or2FileServerDemux.hh include/MPEG2TransportFileServerMediaSubsession.hh include/H263plusVideoFileServerMediaSubsession.hh include/ADTSAudioFileServerMediaSubsession.hh include/DVVideoFileServerMediaSubsession.hh include/AC3AudioFileServerMediaSubsession.hh include/MPEG2TransportUDPServerMediaSubsession.hh include/MatroskaFileServerDemux.hh include/OggFileServerDemux.hh include/ProxyServerMediaSession.hh include/HLSSegmenter.hh
+
+clean:
+	-rm -rf *.$(OBJ) $(ALL) core *.core *~ include/*~
+
+install: install1 $(INSTALL2)
+install1: $(LIVEMEDIA_LIB)
+	 install -d $(DESTDIR)$(PREFIX)/include/liveMedia $(DESTDIR)$(LIBDIR)
+	 install -m 644 include/*.hh $(DESTDIR)$(PREFIX)/include/liveMedia
+	 install -m 644 $(LIVEMEDIA_LIB) $(DESTDIR)$(LIBDIR)
+install_shared_libraries: $(LIVEMEDIA_LIB)
+	 ln -fs $(NAME).$(LIB_SUFFIX) $(DESTDIR)$(LIBDIR)/$(NAME).$(SHORT_LIB_SUFFIX)
+	 ln -fs $(NAME).$(LIB_SUFFIX) $(DESTDIR)$(LIBDIR)/$(NAME).so
+
+##### Any additional, platform-specific rules come here:
diff --git a/liveMedia/MatroskaDemuxedTrack.cpp b/liveMedia/MatroskaDemuxedTrack.cpp
new file mode 100644
index 0000000..7e40edf
--- /dev/null
+++ b/liveMedia/MatroskaDemuxedTrack.cpp
@@ -0,0 +1,47 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A media track, demultiplexed from a Matroska file
+// Implementation
+
+#include "MatroskaDemuxedTrack.hh"
+#include "MatroskaFile.hh"
+
+void MatroskaDemuxedTrack::seekToTime(double& seekNPT) {
+  fOurSourceDemux.seekToTime(seekNPT);
+}
+
+MatroskaDemuxedTrack::MatroskaDemuxedTrack(UsageEnvironment& env, unsigned trackNumber, MatroskaDemux& sourceDemux)
+  : FramedSource(env),
+    fOurTrackNumber(trackNumber), fOurSourceDemux(sourceDemux), fDurationImbalance(0),
+    fOpusTrackNumber(0) {
+  fPrevPresentationTime.tv_sec = 0; fPrevPresentationTime.tv_usec = 0;
+}
+
+MatroskaDemuxedTrack::~MatroskaDemuxedTrack() {
+  fOurSourceDemux.removeTrack(fOurTrackNumber);
+}
+
+void MatroskaDemuxedTrack::doGetNextFrame() {
+  fOurSourceDemux.continueReading();
+}
+
+char const* MatroskaDemuxedTrack::MIMEtype() const {
+  MatroskaTrack* track = fOurSourceDemux.fOurFile.lookup(fOurTrackNumber);
+  if (track == NULL) return "(unknown)"; // shouldn't happen
+  return track->mimeType;
+}
diff --git a/liveMedia/MatroskaDemuxedTrack.hh b/liveMedia/MatroskaDemuxedTrack.hh
new file mode 100644
index 0000000..c94b3a5
--- /dev/null
+++ b/liveMedia/MatroskaDemuxedTrack.hh
@@ -0,0 +1,64 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A media track, demultiplexed from a Matroska file
+// C++ header
+
+#ifndef _MATROSKA_DEMUXED_TRACK_HH
+#define _MATROSKA_DEMUXED_TRACK_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class MatroskaDemux; // forward
+
+class MatroskaDemuxedTrack: public FramedSource {
+public:
+  void seekToTime(double& seekNPT);
+
+private: // We are created only by a MatroskaDemux (a friend)
+  friend class MatroskaDemux;
+  MatroskaDemuxedTrack(UsageEnvironment& env, unsigned trackNumber, MatroskaDemux& sourceDemux);
+  virtual ~MatroskaDemuxedTrack();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual char const* MIMEtype() const;
+
+private: // We are accessed only by MatroskaDemux and by MatroskaFileParser (a friend)
+  friend class MatroskaFileParser;
+  unsigned char* to() { return fTo; }
+  unsigned maxSize() { return fMaxSize; }
+  unsigned& frameSize() { return fFrameSize; }
+  unsigned& numTruncatedBytes() { return fNumTruncatedBytes; }
+  struct timeval& presentationTime() { return fPresentationTime; }
+  unsigned& durationInMicroseconds() { return fDurationInMicroseconds; }
+
+  struct timeval& prevPresentationTime() { return fPrevPresentationTime; }
+  int& durationImbalance() { return fDurationImbalance; }
+
+private:
+  unsigned fOurTrackNumber;
+  MatroskaDemux& fOurSourceDemux;
+  struct timeval fPrevPresentationTime;
+  int fDurationImbalance;
+  unsigned fOpusTrackNumber; // hack for Opus audio
+};
+
+#endif
diff --git a/liveMedia/MatroskaFile.cpp b/liveMedia/MatroskaFile.cpp
new file mode 100644
index 0000000..9e046fd
--- /dev/null
+++ b/liveMedia/MatroskaFile.cpp
@@ -0,0 +1,1045 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class that encapsulates a Matroska file.
+// Implementation
+
+#include "MatroskaFileParser.hh"
+#include "MatroskaDemuxedTrack.hh"
+#include <ByteStreamFileSource.hh>
+#include <H264VideoStreamDiscreteFramer.hh>
+#include <H265VideoStreamDiscreteFramer.hh>
+#include <MPEG1or2AudioRTPSink.hh>
+#include <MPEG4GenericRTPSink.hh>
+#include <AC3AudioRTPSink.hh>
+#include <SimpleRTPSink.hh>
+#include <VorbisAudioRTPSink.hh>
+#include <H264VideoRTPSink.hh>
+#include <H265VideoRTPSink.hh>
+#include <VP8VideoRTPSink.hh>
+#include <VP9VideoRTPSink.hh>
+#include <TheoraVideoRTPSink.hh>
+#include <RawVideoRTPSink.hh>
+#include <T140TextRTPSink.hh>
+#include <Base64.hh>
+#include <H264VideoFileSink.hh>
+#include <H265VideoFileSink.hh>
+#include <AMRAudioFileSink.hh>
+#include <OggFileSink.hh>
+
+////////// CuePoint definition //////////
+
+class CuePoint {
+public:
+  CuePoint(double cueTime, u_int64_t clusterOffsetInFile, unsigned blockNumWithinCluster/* 1-based */);
+  virtual ~CuePoint();
+
+  static void addCuePoint(CuePoint*& root, double cueTime, u_int64_t clusterOffsetInFile, unsigned blockNumWithinCluster/* 1-based */,
+			  Boolean& needToReviseBalanceOfParent);
+    // If "cueTime" == "root.fCueTime", replace the existing data, otherwise add to the left or right subtree.
+    // (Note that this is a static member function because - as a result of tree rotation - "root" might change.)
+
+  Boolean lookup(double& cueTime, u_int64_t& resultClusterOffsetInFile, unsigned& resultBlockNumWithinCluster);
+
+  static void fprintf(FILE* fid, CuePoint* cuePoint); // used for debugging; it's static to allow for "cuePoint == NULL"
+
+private:
+  // The "CuePoint" tree is implemented as an AVL Tree, to keep it balanced (for efficient lookup).
+  CuePoint* fSubTree[2]; // 0 => left; 1 => right
+  CuePoint* left() const { return fSubTree[0]; }
+  CuePoint* right() const { return fSubTree[1]; }
+  char fBalance; // height of right subtree - height of left subtree
+
+  static void rotate(unsigned direction/*0 => left; 1 => right*/, CuePoint*& root); // used to keep the tree in balance
+
+  double fCueTime;
+  u_int64_t fClusterOffsetInFile;
+  unsigned fBlockNumWithinCluster; // 0-based
+};
+
+UsageEnvironment& operator<<(UsageEnvironment& env, const CuePoint* cuePoint); // used for debugging
+
+
+////////// MatroskaTrackTable definition /////////
+
+// For looking up and iterating over the file's tracks:
+class MatroskaTrackTable {
+public:
+  MatroskaTrackTable();
+  virtual ~MatroskaTrackTable();
+
+  void add(MatroskaTrack* newTrack, unsigned trackNumber);
+  MatroskaTrack* lookup(unsigned trackNumber);
+
+  unsigned numTracks() const;
+
+  class Iterator {
+  public:
+    Iterator(MatroskaTrackTable& ourTable);
+    virtual ~Iterator();
+    MatroskaTrack* next();
+  private:
+    HashTable::Iterator* fIter;
+  };
+
+private:
+  friend class Iterator;
+  HashTable* fTable;
+};
+
+
+
+////////// MatroskaFile implementation //////////
+
+void MatroskaFile
+::createNew(UsageEnvironment& env, char const* fileName, onCreationFunc* onCreation, void* onCreationClientData,
+	    char const* preferredLanguage) {
+  new MatroskaFile(env, fileName, onCreation, onCreationClientData, preferredLanguage);
+}
+
+MatroskaFile::MatroskaFile(UsageEnvironment& env, char const* fileName, onCreationFunc* onCreation, void* onCreationClientData,
+			   char const* preferredLanguage)
+  : Medium(env),
+    fFileName(strDup(fileName)), fOnCreation(onCreation), fOnCreationClientData(onCreationClientData),
+    fPreferredLanguage(strDup(preferredLanguage)),
+    fTimecodeScale(1000000), fSegmentDuration(0.0), fSegmentDataOffset(0), fClusterOffset(0), fCuesOffset(0), fCuePoints(NULL),
+    fChosenVideoTrackNumber(0), fChosenAudioTrackNumber(0), fChosenSubtitleTrackNumber(0) {
+  fTrackTable = new MatroskaTrackTable;
+  fDemuxesTable = HashTable::create(ONE_WORD_HASH_KEYS);
+
+  FramedSource* inputSource = ByteStreamFileSource::createNew(envir(), fileName);
+  if (inputSource == NULL) {
+    // The specified input file does not exist!
+    fParserForInitialization = NULL;
+    handleEndOfTrackHeaderParsing(); // we have no file, and thus no tracks, but we still need to signal this
+  } else {
+    // Initialize ourselves by parsing the file's 'Track' headers:
+    fParserForInitialization = new MatroskaFileParser(*this, inputSource, handleEndOfTrackHeaderParsing, this, NULL);
+  }
+}
+
+MatroskaFile::~MatroskaFile() {
+  delete fParserForInitialization;
+  delete fCuePoints;
+
+  // Delete any outstanding "MatroskaDemux"s, and the table for them:
+  MatroskaDemux* demux;
+  while ((demux = (MatroskaDemux*)fDemuxesTable->RemoveNext()) != NULL) {
+    delete demux;
+  }
+  delete fDemuxesTable;
+  delete fTrackTable;
+
+  delete[] (char*)fPreferredLanguage;
+  delete[] (char*)fFileName;
+}
+
+void MatroskaFile::handleEndOfTrackHeaderParsing(void* clientData) {
+  ((MatroskaFile*)clientData)->handleEndOfTrackHeaderParsing();
+}
+
+class TrackChoiceRecord {
+public:
+  unsigned trackNumber;
+  u_int8_t trackType;
+  unsigned choiceFlags;
+};
+
+void MatroskaFile::handleEndOfTrackHeaderParsing() {
+  // Having parsed all of our track headers, iterate through the tracks to figure out which ones should be played.
+  // The Matroska 'specification' is rather imprecise about this (as usual).  However, we use the following algorithm:
+  // - Use one (but no more) enabled track of each type (video, audio, subtitle).  (Ignore all tracks that are not 'enabled'.)
+  // - For each track type, choose the one that's 'forced'.
+  //     - If more than one is 'forced', choose the first one that matches our preferred language, or the first if none matches.
+  //     - If none is 'forced', choose the one that's 'default'.
+  //     - If more than one is 'default', choose the first one that matches our preferred language, or the first if none matches.
+  //     - If none is 'default', choose the first one that matches our preferred language, or the first if none matches.
+  unsigned numTracks = fTrackTable->numTracks();
+  if (numTracks > 0) {
+    TrackChoiceRecord* trackChoice = new TrackChoiceRecord[numTracks];
+    unsigned numEnabledTracks = 0;
+    MatroskaTrackTable::Iterator iter(*fTrackTable);
+    MatroskaTrack* track;
+    while ((track = iter.next()) != NULL) {
+      if (!track->isEnabled || track->trackType == 0 || track->mimeType[0] == '\0') continue; // track not enabled, or not fully-defined
+
+      trackChoice[numEnabledTracks].trackNumber = track->trackNumber;
+      trackChoice[numEnabledTracks].trackType = track->trackType;
+
+      // Assign flags for this track so that, when sorted, the largest value becomes our choice:
+      unsigned choiceFlags = 0;
+      if (fPreferredLanguage != NULL && track->language != NULL && strcmp(fPreferredLanguage, track->language) == 0) {
+	// This track matches our preferred language:
+	choiceFlags |= 1;
+      }
+      if (track->isForced) {
+	choiceFlags |= 4;
+      } else if (track->isDefault) {
+	choiceFlags |= 2;
+      }
+      trackChoice[numEnabledTracks].choiceFlags = choiceFlags;
+
+      ++numEnabledTracks;
+    }
+
+    // Choose the desired track for each track type:
+    for (u_int8_t trackType = 0x01; trackType != MATROSKA_TRACK_TYPE_OTHER; trackType <<= 1) {
+      int bestNum = -1;
+      int bestChoiceFlags = -1;
+      for (unsigned i = 0; i < numEnabledTracks; ++i) {
+	if (trackChoice[i].trackType == trackType && (int)trackChoice[i].choiceFlags > bestChoiceFlags) {
+	  bestNum = i;
+	  bestChoiceFlags = (int)trackChoice[i].choiceFlags;
+	}
+      }
+      if (bestChoiceFlags >= 0) { // There is a track for this track type
+	if (trackType == MATROSKA_TRACK_TYPE_VIDEO) fChosenVideoTrackNumber = trackChoice[bestNum].trackNumber;
+	else if (trackType == MATROSKA_TRACK_TYPE_AUDIO) fChosenAudioTrackNumber = trackChoice[bestNum].trackNumber;
+	else fChosenSubtitleTrackNumber = trackChoice[bestNum].trackNumber;
+      }
+    }
+
+    delete[] trackChoice;
+  }
+  
+#ifdef DEBUG
+  if (fChosenVideoTrackNumber > 0) fprintf(stderr, "Chosen video track: #%d\n", fChosenVideoTrackNumber); else fprintf(stderr, "No chosen video track\n");
+  if (fChosenAudioTrackNumber > 0) fprintf(stderr, "Chosen audio track: #%d\n", fChosenAudioTrackNumber); else fprintf(stderr, "No chosen audio track\n");
+  if (fChosenSubtitleTrackNumber > 0) fprintf(stderr, "Chosen subtitle track: #%d\n", fChosenSubtitleTrackNumber); else fprintf(stderr, "No chosen subtitle track\n");
+#endif
+
+  // Delete our parser, because it's done its job now:
+  delete fParserForInitialization; fParserForInitialization = NULL;
+
+  // Finally, signal our caller that we've been created and initialized:
+  if (fOnCreation != NULL) (*fOnCreation)(this, fOnCreationClientData);
+}
+
+MatroskaTrack* MatroskaFile::lookup(unsigned trackNumber) const {
+  return fTrackTable->lookup(trackNumber);
+}
+
+MatroskaDemux* MatroskaFile::newDemux() {
+  MatroskaDemux* demux = new MatroskaDemux(*this);
+  fDemuxesTable->Add((char const*)demux, demux);
+
+  return demux;
+}
+
+void MatroskaFile::removeDemux(MatroskaDemux* demux) {
+  fDemuxesTable->Remove((char const*)demux);
+}
+
+#define getPrivByte(b) if (n == 0) break; else do {b = *p++; --n;} while (0) /* Vorbis/Theora configuration header parsing */
+#define CHECK_PTR if (ptr >= limit) break /* H.264/H.265 parsing */
+#define NUM_BYTES_REMAINING (unsigned)(limit - ptr) /* H.264/H.265 parsing */
+
+void MatroskaFile::getH264ConfigData(MatroskaTrack const* track,
+				     u_int8_t*& sps, unsigned& spsSize,
+				     u_int8_t*& pps, unsigned& ppsSize) {
+  sps = pps = NULL;
+  spsSize = ppsSize = 0;
+
+  do {
+    if (track == NULL) break;
+
+    // Use our track's 'Codec Private' data: Bytes 5 and beyond contain SPS and PPSs:
+    if (track->codecPrivateSize < 6) break;
+    u_int8_t* SPSandPPSBytes = &track->codecPrivate[5];
+    unsigned numSPSandPPSBytes = track->codecPrivateSize - 5;
+
+    // Extract, from "SPSandPPSBytes", one SPS NAL unit, and one PPS NAL unit.
+    // (I hope one is all we need of each.)
+    unsigned i;
+    u_int8_t* ptr = SPSandPPSBytes;
+    u_int8_t* limit = &SPSandPPSBytes[numSPSandPPSBytes];
+	
+    unsigned numSPSs = (*ptr++)&0x1F; CHECK_PTR;
+    for (i = 0; i < numSPSs; ++i) {
+      unsigned spsSize1 = (*ptr++)<<8; CHECK_PTR;
+      spsSize1 |= *ptr++; CHECK_PTR;
+	  
+      if (spsSize1 > NUM_BYTES_REMAINING) break;
+      u_int8_t nal_unit_type = ptr[0]&0x1F;
+      if (sps == NULL && nal_unit_type == 7/*sanity check*/) { // save the first one
+	spsSize = spsSize1;
+	sps = new u_int8_t[spsSize];
+	memmove(sps, ptr, spsSize);
+      }
+      ptr += spsSize1;
+    }
+	
+    unsigned numPPSs = (*ptr++)&0x1F; CHECK_PTR;
+    for (i = 0; i < numPPSs; ++i) {
+      unsigned ppsSize1 = (*ptr++)<<8; CHECK_PTR;
+      ppsSize1 |= *ptr++; CHECK_PTR;
+	  
+      if (ppsSize1 > NUM_BYTES_REMAINING) break;
+      u_int8_t nal_unit_type = ptr[0]&0x1F;
+      if (pps == NULL && nal_unit_type == 8/*sanity check*/) { // save the first one
+	ppsSize = ppsSize1;
+	pps = new u_int8_t[ppsSize];
+	memmove(pps, ptr, ppsSize);
+      }
+      ptr += ppsSize1;
+    }
+
+    return;
+  } while (0);
+
+  // An error occurred:
+  delete[] sps; sps = NULL; spsSize = 0;
+  delete[] pps; pps = NULL; ppsSize = 0;
+}
+
+void MatroskaFile::getH265ConfigData(MatroskaTrack const* track,
+				     u_int8_t*& vps, unsigned& vpsSize,
+				     u_int8_t*& sps, unsigned& spsSize,
+				     u_int8_t*& pps, unsigned& ppsSize) {
+  vps = sps = pps = NULL;
+  vpsSize = spsSize = ppsSize = 0;
+
+  do {
+    if (track == NULL) break;
+
+    u_int8_t* VPS_SPS_PPSBytes = NULL; unsigned numVPS_SPS_PPSBytes = 0;
+    unsigned i;
+
+    if (track->codecPrivateUsesH264FormatForH265) {
+      // The data uses the H.264-style format (but including VPS NAL unit(s)).
+      // The VPS,SPS,PPS NAL unit information starts at byte #5:
+      if (track->codecPrivateSize >= 6) {
+	numVPS_SPS_PPSBytes = track->codecPrivateSize - 5;
+	VPS_SPS_PPSBytes = &track->codecPrivate[5];
+      }
+    } else {
+      // The data uses the proper H.265-style format.
+      // The VPS,SPS,PPS NAL unit information starts at byte #22:
+      if (track->codecPrivateSize >= 23) {
+	numVPS_SPS_PPSBytes = track->codecPrivateSize - 22;
+ 	VPS_SPS_PPSBytes = &track->codecPrivate[22];
+      }
+    }
+    if (VPS_SPS_PPSBytes == NULL) break; // no VPS,SPS,PPS NAL unit information was present
+	
+    // Extract, from "VPS_SPS_PPSBytes", one VPS NAL unit, one SPS NAL unit, and one PPS NAL unit.
+    // (I hope one is all we need of each.)
+    u_int8_t* ptr = VPS_SPS_PPSBytes;
+    u_int8_t* limit = &VPS_SPS_PPSBytes[numVPS_SPS_PPSBytes];
+	
+    if (track->codecPrivateUsesH264FormatForH265) {
+      // The data uses the H.264-style format (but including VPS NAL unit(s)).
+      while (NUM_BYTES_REMAINING > 0) {
+	unsigned numNALUnits = (*ptr++)&0x1F; CHECK_PTR;
+	for (i = 0; i < numNALUnits; ++i) {
+	  unsigned nalUnitLength = (*ptr++)<<8; CHECK_PTR;
+	  nalUnitLength |= *ptr++; CHECK_PTR;
+	      
+	  if (nalUnitLength > NUM_BYTES_REMAINING) break;
+	  u_int8_t nal_unit_type = (ptr[0]&0x7E)>>1;
+	  if (nal_unit_type == 32) { // VPS
+	    vpsSize = nalUnitLength;
+	    delete[] vps; vps = new u_int8_t[nalUnitLength];
+	    memmove(vps, ptr, nalUnitLength);
+	  } else if (nal_unit_type == 33) { // SPS
+	    spsSize = nalUnitLength;
+	    delete[] sps; sps = new u_int8_t[nalUnitLength];
+	    memmove(sps, ptr, nalUnitLength);
+	  } else if (nal_unit_type == 34) { // PPS
+	    ppsSize = nalUnitLength;
+	    delete[] pps; pps = new u_int8_t[nalUnitLength];
+	    memmove(pps, ptr, nalUnitLength);
+	  }
+	  ptr += nalUnitLength;
+	}
+      }
+    } else {
+      // The data uses the proper H.265-style format.
+      unsigned numOfArrays = *ptr++; CHECK_PTR;
+      for (unsigned j = 0; j < numOfArrays; ++j) {
+	++ptr; CHECK_PTR; // skip the 'array_completeness'|'reserved'|'NAL_unit_type' byte
+	    
+	unsigned numNalus = (*ptr++)<<8; CHECK_PTR;
+	numNalus |= *ptr++; CHECK_PTR;
+	    
+	for (i = 0; i < numNalus; ++i) {
+	  unsigned nalUnitLength = (*ptr++)<<8; CHECK_PTR;
+	  nalUnitLength |= *ptr++; CHECK_PTR;
+	      
+	  if (nalUnitLength > NUM_BYTES_REMAINING) break;
+	  u_int8_t nal_unit_type = (ptr[0]&0x7E)>>1;
+	  if (nal_unit_type == 32) { // VPS
+	    vpsSize = nalUnitLength;
+	    delete[] vps; vps = new u_int8_t[nalUnitLength];
+	    memmove(vps, ptr, nalUnitLength);
+	  } else if (nal_unit_type == 33) { // SPS
+	    spsSize = nalUnitLength;
+	    delete[] sps; sps = new u_int8_t[nalUnitLength];
+	    memmove(sps, ptr, nalUnitLength);
+	  } else if (nal_unit_type == 34) { // PPS
+	    ppsSize = nalUnitLength;
+	    delete[] pps; pps = new u_int8_t[nalUnitLength];
+	    memmove(pps, ptr, nalUnitLength);
+	  }
+	  ptr += nalUnitLength;
+	}
+      }
+    }
+
+    return;
+  } while (0);
+
+  // An error occurred:
+  delete[] vps; vps = NULL; vpsSize = 0;
+  delete[] sps; sps = NULL; spsSize = 0;
+  delete[] pps; pps = NULL; ppsSize = 0;
+}
+
+void MatroskaFile
+::getVorbisOrTheoraConfigData(MatroskaTrack const* track,
+			      u_int8_t*& identificationHeader, unsigned& identificationHeaderSize,
+			      u_int8_t*& commentHeader, unsigned& commentHeaderSize,
+			      u_int8_t*& setupHeader, unsigned& setupHeaderSize) {
+  identificationHeader = commentHeader = setupHeader = NULL;
+  identificationHeaderSize = commentHeaderSize = setupHeaderSize = 0;
+
+  do {
+    if (track == NULL) break;
+
+    // The Matroska file's 'Codec Private' data is assumed to be the codec configuration
+    // information, containing the "Identification", "Comment", and "Setup" headers.
+    // Extract these headers now:
+    Boolean isTheora = strcmp(track->mimeType, "video/THEORA") == 0; // otherwise, Vorbis
+    u_int8_t* p = track->codecPrivate;
+    unsigned n = track->codecPrivateSize;
+    if (n == 0 || p == NULL) break; // we have no 'Codec Private' data
+    
+    u_int8_t numHeaders;
+    getPrivByte(numHeaders);
+    unsigned headerSize[3]; // we don't handle any more than 2+1 headers
+    
+    // Extract the sizes of each of these headers:
+    unsigned sizesSum = 0;
+    Boolean success = True;
+    unsigned i;
+    for (i = 0; i < numHeaders && i < 3; ++i) {
+      unsigned len = 0;
+      u_int8_t c;
+      
+      do {
+	success = False;
+	getPrivByte(c);
+	success = True;
+	
+	len += c;
+      } while (c == 255);
+      if (!success || len == 0) break;
+      
+      headerSize[i] = len;
+      sizesSum += len;
+    }
+    if (!success) break;
+    
+    // Compute the implicit size of the final header:
+    if (numHeaders < 3) {
+      int finalHeaderSize = n - sizesSum;
+      if (finalHeaderSize <= 0) break; // error in data; give up
+      
+      headerSize[numHeaders] = (unsigned)finalHeaderSize;
+      ++numHeaders; // include the final header now
+    } else {
+      numHeaders = 3; // The maximum number of headers that we handle
+    }
+    
+    // Then, extract and classify each header:
+    for (i = 0; i < numHeaders; ++i) {
+      success = False;
+      unsigned newHeaderSize = headerSize[i];
+      u_int8_t* newHeader = new u_int8_t[newHeaderSize];
+      if (newHeader == NULL) break;
+      
+      u_int8_t* hdr = newHeader;
+      while (newHeaderSize-- > 0) {
+	success = False;
+	getPrivByte(*hdr++);
+	success = True;
+      }
+      if (!success) {
+	delete[] newHeader;
+	break;
+      }
+      
+      u_int8_t headerType = newHeader[0];
+      if (headerType == 1 || (isTheora && headerType == 0x80)) { // "identification" header
+	delete[] identificationHeader; identificationHeader = newHeader;
+	identificationHeaderSize = headerSize[i];
+      } else if (headerType == 3 || (isTheora && headerType == 0x81)) { // "comment" header
+	delete[] commentHeader; commentHeader = newHeader;
+	commentHeaderSize = headerSize[i];
+      } else if (headerType == 5 || (isTheora && headerType == 0x82)) { // "setup" header
+	delete[] setupHeader; setupHeader = newHeader;
+	setupHeaderSize = headerSize[i];
+      } else {
+	delete[] newHeader; // because it was a header type that we don't understand
+      }
+    }
+    if (!success) break;
+
+    return;
+  } while (0);
+
+  // An error occurred:
+  delete[] identificationHeader; identificationHeader = NULL; identificationHeaderSize = 0;
+  delete[] commentHeader; commentHeader = NULL; commentHeaderSize = 0;
+  delete[] setupHeader; setupHeader = NULL; setupHeaderSize = 0;
+}
+
+float MatroskaFile::fileDuration() {
+  if (fCuePoints == NULL) return 0.0; // Hack, because the RTSP server code assumes that duration > 0 => seekable. (fix this) #####
+
+  return segmentDuration()*(timecodeScale()/1000000000.0f);
+}
+
+// The size of the largest key frame that we expect.  This determines our buffer sizes:
+#define MAX_KEY_FRAME_SIZE 300000
+
+FramedSource* MatroskaFile
+::createSourceForStreaming(FramedSource* baseSource, unsigned trackNumber,
+			   unsigned& estBitrate, unsigned& numFiltersInFrontOfTrack) {
+  if (baseSource == NULL) return NULL;
+
+  FramedSource* result = baseSource; // by default
+  estBitrate = 100; // by default
+  numFiltersInFrontOfTrack = 0; // by default
+
+  // Look at the track's MIME type to set its estimated bitrate (for use by RTCP).
+  // (Later, try to be smarter about figuring out the bitrate.) #####
+  // Some MIME types also require adding a special 'framer' in front of the source.
+  MatroskaTrack* track = lookup(trackNumber);
+  if (track != NULL) { // should always be true
+    if (strcmp(track->mimeType, "audio/MPEG") == 0) {
+      estBitrate = 128;
+    } else if (strcmp(track->mimeType, "audio/AAC") == 0) {
+      estBitrate = 96;
+    } else if (strcmp(track->mimeType, "audio/AC3") == 0) {
+      estBitrate = 48;
+    } else if (strcmp(track->mimeType, "audio/VORBIS") == 0) {
+      estBitrate = 96;
+    } else if (strcmp(track->mimeType, "video/H264") == 0) {
+      estBitrate = 500;
+      // Allow for the possibility of very large NAL units being fed to the sink object:
+      OutPacketBuffer::increaseMaxSizeTo(MAX_KEY_FRAME_SIZE); // bytes
+
+      // Add a framer in front of the source:
+      result = H264VideoStreamDiscreteFramer::createNew(envir(), result);
+      ++numFiltersInFrontOfTrack;
+    } else if (strcmp(track->mimeType, "video/H265") == 0) {
+      estBitrate = 500;
+      // Allow for the possibility of very large NAL units being fed to the sink object:
+      OutPacketBuffer::increaseMaxSizeTo(MAX_KEY_FRAME_SIZE); // bytes
+
+      // Add a framer in front of the source:
+      result = H265VideoStreamDiscreteFramer::createNew(envir(), result);
+      ++numFiltersInFrontOfTrack;
+    } else if (strcmp(track->mimeType, "video/VP8") == 0) {
+      estBitrate = 500;
+    } else if (strcmp(track->mimeType, "video/VP9") == 0) {
+      estBitrate = 500;
+    } else if (strcmp(track->mimeType, "video/THEORA") == 0) {
+      estBitrate = 500;
+    } else if (strcmp(track->mimeType, "text/T140") == 0) {
+      estBitrate = 48;
+    }
+  }
+
+  return result;
+}
+
+char const* MatroskaFile::trackMIMEType(unsigned trackNumber) const {
+  MatroskaTrack* track = lookup(trackNumber);
+  if (track == NULL) return NULL;
+
+  return track->mimeType;
+}
+
+RTPSink* MatroskaFile
+::createRTPSinkForTrackNumber(unsigned trackNumber, Groupsock* rtpGroupsock,
+			      unsigned char rtpPayloadTypeIfDynamic) {
+  RTPSink* result = NULL; // default value, if an error occurs
+
+  do {
+    MatroskaTrack* track = lookup(trackNumber);
+    if (track == NULL) break;
+
+    if (strcmp(track->mimeType, "audio/L16") == 0) {
+      result = SimpleRTPSink::createNew(envir(), rtpGroupsock,rtpPayloadTypeIfDynamic, track->samplingFrequency, "audio", "L16", track->numChannels);
+    } else if (strcmp(track->mimeType, "audio/MPEG") == 0) {
+      result = MPEG1or2AudioRTPSink::createNew(envir(), rtpGroupsock);
+    } else if (strcmp(track->mimeType, "audio/AAC") == 0) {
+      // The Matroska file's 'Codec Private' data is assumed to be the AAC configuration
+      // information.  Use this to generate a hexadecimal 'config' string for the new RTP sink:
+      char* configStr = new char[2*track->codecPrivateSize + 1]; if (configStr == NULL) break;
+          // 2 hex digits per byte, plus the trailing '\0'
+      for (unsigned i = 0; i < track->codecPrivateSize; ++i) {
+	sprintf(&configStr[2*i], "%02X", track->codecPrivate[i]);
+      }
+
+      result = MPEG4GenericRTPSink::createNew(envir(), rtpGroupsock,
+					      rtpPayloadTypeIfDynamic,
+					      track->samplingFrequency,
+					      "audio", "AAC-hbr", configStr,
+					      track->numChannels);
+      delete[] configStr;
+    } else if (strcmp(track->mimeType, "audio/AC3") == 0) {
+      result = AC3AudioRTPSink
+	::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic, track->samplingFrequency);
+    } else if (strcmp(track->mimeType, "audio/OPUS") == 0) {
+      result = SimpleRTPSink
+	::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+		    48000, "audio", "OPUS", 2, False/*only 1 Opus 'packet' in each RTP packet*/);
+    } else if (strcmp(track->mimeType, "audio/VORBIS") == 0 || strcmp(track->mimeType, "video/THEORA") == 0) {
+      u_int8_t* identificationHeader; unsigned identificationHeaderSize;
+      u_int8_t* commentHeader; unsigned commentHeaderSize;
+      u_int8_t* setupHeader; unsigned setupHeaderSize;
+      getVorbisOrTheoraConfigData(track,
+				  identificationHeader, identificationHeaderSize,
+				  commentHeader, commentHeaderSize,
+				  setupHeader, setupHeaderSize);
+
+      if (strcmp(track->mimeType, "video/THEORA") == 0) {
+	result = TheoraVideoRTPSink
+	  ::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+		      identificationHeader, identificationHeaderSize,
+		      commentHeader, commentHeaderSize,
+		      setupHeader, setupHeaderSize);
+      } else { // Vorbis
+	result = VorbisAudioRTPSink
+	  ::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+		      track->samplingFrequency, track->numChannels,
+		      identificationHeader, identificationHeaderSize,
+		      commentHeader, commentHeaderSize,
+		      setupHeader, setupHeaderSize);
+      }
+      delete[] identificationHeader; delete[] commentHeader; delete[] setupHeader;
+    } else if (strcmp(track->mimeType, "video/RAW") == 0) {
+      result = RawVideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic, 
+                                          track->pixelHeight, track->pixelWidth, track->bitDepth, track->colorSampling, track->colorimetry);
+    } else if (strcmp(track->mimeType, "video/H264") == 0) {
+      u_int8_t* sps; unsigned spsSize;
+      u_int8_t* pps; unsigned ppsSize;
+
+      getH264ConfigData(track, sps, spsSize, pps, ppsSize);
+      result = H264VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					   sps, spsSize, pps, ppsSize);
+      delete[] sps; delete[] pps;
+    } else if (strcmp(track->mimeType, "video/H265") == 0) {
+      u_int8_t* vps; unsigned vpsSize;
+      u_int8_t* sps; unsigned spsSize;
+      u_int8_t* pps; unsigned ppsSize;
+
+      getH265ConfigData(track, vps, vpsSize, sps, spsSize, pps, ppsSize);
+      result = H265VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					   vps, vpsSize, sps, spsSize, pps, ppsSize);
+      delete[] vps; delete[] sps; delete[] pps;
+    } else if (strcmp(track->mimeType, "video/VP8") == 0) {
+      result = VP8VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+    } else if (strcmp(track->mimeType, "video/VP9") == 0) {
+      result = VP9VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+    } else if (strcmp(track->mimeType, "text/T140") == 0) {
+      result = T140TextRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+    }
+  } while (0);
+
+  return result;
+}
+
+FileSink* MatroskaFile::createFileSinkForTrackNumber(unsigned trackNumber, char const* fileName) {
+  FileSink* result = NULL; // default value, if an error occurs
+  Boolean createOggFileSink = False; // by default
+
+  do {
+    MatroskaTrack* track = lookup(trackNumber);
+    if (track == NULL) break;
+
+    if (strcmp(track->mimeType, "video/H264") == 0) {
+      u_int8_t* sps; unsigned spsSize;
+      u_int8_t* pps; unsigned ppsSize;
+
+      getH264ConfigData(track, sps, spsSize, pps, ppsSize);
+
+      char* sps_base64 = base64Encode((char*)sps, spsSize);
+      char* pps_base64 = base64Encode((char*)pps, ppsSize);
+      delete[] sps; delete[] pps;
+
+      char* sPropParameterSetsStr
+	= new char[(sps_base64 == NULL ? 0 : strlen(sps_base64)) +
+		   (pps_base64 == NULL ? 0 : strlen(pps_base64)) +
+		   10 /*more than enough space*/];
+      sprintf(sPropParameterSetsStr, "%s,%s", sps_base64, pps_base64);
+      delete[] sps_base64; delete[] pps_base64;
+
+      result = H264VideoFileSink::createNew(envir(), fileName,
+					    sPropParameterSetsStr,
+					    MAX_KEY_FRAME_SIZE); // extra large buffer size for large key frames
+      delete[] sPropParameterSetsStr;
+    } else if (strcmp(track->mimeType, "video/H265") == 0) {
+      u_int8_t* vps; unsigned vpsSize;
+      u_int8_t* sps; unsigned spsSize;
+      u_int8_t* pps; unsigned ppsSize;
+
+      getH265ConfigData(track, vps, vpsSize, sps, spsSize, pps, ppsSize);
+
+      char* vps_base64 = base64Encode((char*)vps, vpsSize);
+      char* sps_base64 = base64Encode((char*)sps, spsSize);
+      char* pps_base64 = base64Encode((char*)pps, ppsSize);
+      delete[] vps; delete[] sps; delete[] pps;
+
+      result = H265VideoFileSink::createNew(envir(), fileName,
+					    vps_base64, sps_base64, pps_base64,
+					    MAX_KEY_FRAME_SIZE); // extra large buffer size for large key frames
+      delete[] vps_base64; delete[] sps_base64; delete[] pps_base64;
+    } else if (strcmp(track->mimeType, "video/THEORA") == 0) {
+      createOggFileSink = True;
+    } else if (strcmp(track->mimeType, "audio/AMR") == 0 ||
+	       strcmp(track->mimeType, "audio/AMR-WB") == 0) {
+      // For AMR audio streams, we use a special sink that inserts AMR frame hdrs:
+      result = AMRAudioFileSink::createNew(envir(), fileName);
+    } else if (strcmp(track->mimeType, "audio/VORBIS") == 0 ||
+	       strcmp(track->mimeType, "audio/OPUS") == 0) {
+      createOggFileSink = True;
+    }
+
+    if (createOggFileSink) {
+      char* configStr = NULL; // by default
+
+      if (strcmp(track->mimeType, "audio/VORBIS") == 0 || strcmp(track->mimeType, "video/THEORA") == 0) {
+	u_int8_t* identificationHeader; unsigned identificationHeaderSize;
+	u_int8_t* commentHeader; unsigned commentHeaderSize;
+	u_int8_t* setupHeader; unsigned setupHeaderSize;
+	getVorbisOrTheoraConfigData(track,
+				    identificationHeader, identificationHeaderSize,
+				    commentHeader, commentHeaderSize,
+				    setupHeader, setupHeaderSize);
+	u_int32_t identField = 0xFACADE; // Can we get a real value from the file somehow?
+	configStr = generateVorbisOrTheoraConfigStr(identificationHeader, identificationHeaderSize,
+						    commentHeader, commentHeaderSize,
+						    setupHeader, setupHeaderSize,
+						    identField);
+	delete[] identificationHeader; delete[] commentHeader; delete[] setupHeader;
+      }
+
+      result = OggFileSink::createNew(envir(), fileName, track->samplingFrequency, configStr, MAX_KEY_FRAME_SIZE);
+      delete[] configStr;
+    } else if (result == NULL) {
+      // By default, just create a regular "FileSink":
+      result = FileSink::createNew(envir(), fileName, MAX_KEY_FRAME_SIZE);
+    }
+  } while (0);
+
+  return result;
+}
+
+void MatroskaFile::addTrack(MatroskaTrack* newTrack, unsigned trackNumber) {
+  fTrackTable->add(newTrack, trackNumber);
+}
+
+void MatroskaFile::addCuePoint(double cueTime, u_int64_t clusterOffsetInFile, unsigned blockNumWithinCluster) {
+  Boolean dummy = False; // not used
+  CuePoint::addCuePoint(fCuePoints, cueTime, clusterOffsetInFile, blockNumWithinCluster, dummy);
+}
+
+Boolean MatroskaFile::lookupCuePoint(double& cueTime, u_int64_t& resultClusterOffsetInFile, unsigned& resultBlockNumWithinCluster) {
+  if (fCuePoints == NULL) return False;
+
+  (void)fCuePoints->lookup(cueTime, resultClusterOffsetInFile, resultBlockNumWithinCluster);
+  return True;
+}
+
+void MatroskaFile::printCuePoints(FILE* fid) {
+  CuePoint::fprintf(fid, fCuePoints);
+}
+
+
+////////// MatroskaTrackTable implementation //////////
+
+MatroskaTrackTable::MatroskaTrackTable()
+  : fTable(HashTable::create(ONE_WORD_HASH_KEYS)) {
+}
+
+MatroskaTrackTable::~MatroskaTrackTable() {
+  // Remove and delete all of our "MatroskaTrack" descriptors, and the hash table itself:
+  MatroskaTrack* track;
+  while ((track = (MatroskaTrack*)fTable->RemoveNext()) != NULL) {
+    delete track;
+  }
+  delete fTable;
+} 
+
+void MatroskaTrackTable::add(MatroskaTrack* newTrack, unsigned trackNumber) {
+  if (newTrack != NULL && newTrack->trackNumber != 0) fTable->Remove((char const*)newTrack->trackNumber);
+  MatroskaTrack* existingTrack = (MatroskaTrack*)fTable->Add((char const*)trackNumber, newTrack);
+  delete existingTrack; // in case it wasn't NULL
+}
+
+MatroskaTrack* MatroskaTrackTable::lookup(unsigned trackNumber) {
+  return (MatroskaTrack*)fTable->Lookup((char const*)trackNumber);
+}
+
+unsigned MatroskaTrackTable::numTracks() const { return fTable->numEntries(); }
+
+MatroskaTrackTable::Iterator::Iterator(MatroskaTrackTable& ourTable) {
+  fIter = HashTable::Iterator::create(*(ourTable.fTable));
+}
+
+MatroskaTrackTable::Iterator::~Iterator() {
+  delete fIter;
+}
+
+MatroskaTrack* MatroskaTrackTable::Iterator::next() {
+  char const* key;
+  return (MatroskaTrack*)fIter->next(key);
+}
+
+
+////////// MatroskaTrack implementation //////////
+
+MatroskaTrack::MatroskaTrack()
+  : trackNumber(0/*not set*/), trackType(0/*unknown*/),
+    isEnabled(True), isDefault(True), isForced(False),
+    defaultDuration(0),
+    name(NULL), language(NULL), codecID(NULL),
+    samplingFrequency(0), numChannels(2), mimeType(""),
+    codecPrivateSize(0), codecPrivate(NULL),
+    codecPrivateUsesH264FormatForH265(False), codecIsOpus(False),
+    headerStrippedBytesSize(0), headerStrippedBytes(NULL),
+    colorSampling(""), colorimetry("BT709-2") /*Matroska default value for Primaries */,
+    pixelWidth(0), pixelHeight(0), bitDepth(8), subframeSizeSize(0) {
+}
+
+MatroskaTrack::~MatroskaTrack() {
+  delete[] name; delete[] language; delete[] codecID;
+  delete[] codecPrivate;
+  delete[] headerStrippedBytes;
+}
+
+
+////////// MatroskaDemux implementation //////////
+
+MatroskaDemux::MatroskaDemux(MatroskaFile& ourFile)
+  : Medium(ourFile.envir()),
+    fOurFile(ourFile), fDemuxedTracksTable(HashTable::create(ONE_WORD_HASH_KEYS)),
+    fNextTrackTypeToCheck(0x1) {
+  fOurParser = new MatroskaFileParser(ourFile, ByteStreamFileSource::createNew(envir(), ourFile.fileName()),
+				      handleEndOfFile, this, this);
+}
+
+MatroskaDemux::~MatroskaDemux() {
+  // Begin by acting as if we've reached the end of the source file.  This should cause all of our demuxed tracks to get closed.
+  handleEndOfFile();
+
+  // Then delete our table of "MatroskaDemuxedTrack"s
+  // - but not the "MatroskaDemuxedTrack"s themselves; that should have already happened:
+  delete fDemuxedTracksTable;
+
+  delete fOurParser;
+  fOurFile.removeDemux(this);
+}
+
+FramedSource* MatroskaDemux::newDemuxedTrack() {
+  unsigned dummyResultTrackNumber;
+  return newDemuxedTrack(dummyResultTrackNumber);
+}
+
+FramedSource* MatroskaDemux::newDemuxedTrack(unsigned& resultTrackNumber) {
+  FramedSource* result;
+  resultTrackNumber = 0;
+
+  for (result = NULL; result == NULL && fNextTrackTypeToCheck != MATROSKA_TRACK_TYPE_OTHER;
+       fNextTrackTypeToCheck <<= 1) {
+    if (fNextTrackTypeToCheck == MATROSKA_TRACK_TYPE_VIDEO) resultTrackNumber = fOurFile.chosenVideoTrackNumber();
+    else if (fNextTrackTypeToCheck == MATROSKA_TRACK_TYPE_AUDIO) resultTrackNumber = fOurFile.chosenAudioTrackNumber();
+    else if (fNextTrackTypeToCheck == MATROSKA_TRACK_TYPE_SUBTITLE) resultTrackNumber = fOurFile.chosenSubtitleTrackNumber();
+
+    result = newDemuxedTrackByTrackNumber(resultTrackNumber);
+  }
+
+  return result;
+}
+
+FramedSource* MatroskaDemux::newDemuxedTrackByTrackNumber(unsigned trackNumber) {
+  if (trackNumber == 0) return NULL;
+
+  FramedSource* trackSource = new MatroskaDemuxedTrack(envir(), trackNumber, *this);
+  fDemuxedTracksTable->Add((char const*)trackNumber, trackSource);
+  return trackSource;
+}
+
+MatroskaDemuxedTrack* MatroskaDemux::lookupDemuxedTrack(unsigned trackNumber) {
+  return (MatroskaDemuxedTrack*)fDemuxedTracksTable->Lookup((char const*)trackNumber);
+}
+
+void MatroskaDemux::removeTrack(unsigned trackNumber) {
+  fDemuxedTracksTable->Remove((char const*)trackNumber);
+  if (fDemuxedTracksTable->numEntries() == 0) {
+    // We no longer have any demuxed tracks, so delete ourselves now:
+    Medium::close(this);
+  }
+}
+
+void MatroskaDemux::continueReading() {
+  fOurParser->continueParsing();  
+}
+
+void MatroskaDemux::seekToTime(double& seekNPT) {
+  if (fOurParser != NULL) fOurParser->seekToTime(seekNPT);
+}
+
+void MatroskaDemux::handleEndOfFile(void* clientData) {
+  ((MatroskaDemux*)clientData)->handleEndOfFile();
+}
+
+void MatroskaDemux::handleEndOfFile() {
+  // Iterate through all of our 'demuxed tracks', handling 'end of input' on each one.
+  // Hack: Because this can cause the hash table to get modified underneath us, we don't call the handlers until after we've
+  // first iterated through all of the tracks.
+  unsigned numTracks = fDemuxedTracksTable->numEntries();
+  if (numTracks == 0) return;
+  MatroskaDemuxedTrack** tracks = new MatroskaDemuxedTrack*[numTracks];
+
+  HashTable::Iterator* iter = HashTable::Iterator::create(*fDemuxedTracksTable);
+  unsigned i;
+  char const* trackNumber;
+
+  for (i = 0; i < numTracks; ++i) {
+    tracks[i] = (MatroskaDemuxedTrack*)iter->next(trackNumber);
+  }
+  delete iter;
+
+  for (i = 0; i < numTracks; ++i) {
+    if (tracks[i] == NULL) continue; // sanity check; shouldn't happen
+    tracks[i]->handleClosure();
+  }
+
+  delete[] tracks;
+}
+
+
+////////// CuePoint implementation //////////
+
+CuePoint::CuePoint(double cueTime, u_int64_t clusterOffsetInFile, unsigned blockNumWithinCluster)
+  : fBalance(0),
+    fCueTime(cueTime), fClusterOffsetInFile(clusterOffsetInFile), fBlockNumWithinCluster(blockNumWithinCluster - 1) {
+  fSubTree[0] = fSubTree[1] = NULL;
+}
+
+CuePoint::~CuePoint() {
+  delete fSubTree[0]; delete fSubTree[1];
+}
+
+void CuePoint::addCuePoint(CuePoint*& root, double cueTime, u_int64_t clusterOffsetInFile, unsigned blockNumWithinCluster,
+			   Boolean& needToReviseBalanceOfParent) {
+  needToReviseBalanceOfParent = False; // by default; may get changed below
+
+  if (root == NULL) {
+    root = new CuePoint(cueTime, clusterOffsetInFile, blockNumWithinCluster);
+    needToReviseBalanceOfParent = True;
+  } else if (cueTime == root->fCueTime) {
+    // Replace existing data:
+    root->fClusterOffsetInFile = clusterOffsetInFile;
+    root->fBlockNumWithinCluster = blockNumWithinCluster - 1;
+  } else {
+    // Add to our left or right subtree:
+    int direction = cueTime > root->fCueTime; // 0 (left) or 1 (right)
+    Boolean needToReviseOurBalance = False;
+    addCuePoint(root->fSubTree[direction], cueTime, clusterOffsetInFile, blockNumWithinCluster, needToReviseOurBalance);
+
+    if (needToReviseOurBalance) {
+      // We need to change our 'balance' number, perhaps while also performing a rotation to bring ourself back into balance:
+      if (root->fBalance == 0) {
+	// We were balanced before, but now we're unbalanced (by 1) on the "direction" side:
+	root->fBalance = -1 + 2*direction; // -1 for "direction" 0; 1 for "direction" 1
+	needToReviseBalanceOfParent = True;
+      } else if (root->fBalance == 1 - 2*direction) { // 1 for "direction" 0; -1 for "direction" 1
+	// We were unbalanced (by 1) on the side opposite to where we added an entry, so now we're balanced:
+	root->fBalance = 0;
+      } else {
+	// We were unbalanced (by 1) on the side where we added an entry, so now we're unbalanced by 2, and have to rebalance:
+	if (root->fSubTree[direction]->fBalance == -1 + 2*direction) { // -1 for "direction" 0; 1 for "direction" 1
+	  // We're 'doubly-unbalanced' on this side, so perform a single rotation in the opposite direction:
+	  root->fBalance = root->fSubTree[direction]->fBalance = 0;
+	  rotate(1-direction, root);
+	} else {
+	  // This is the Left-Right case (for "direction" 0) or the Right-Left case (for "direction" 1); perform two rotations:
+	  char newParentCurBalance = root->fSubTree[direction]->fSubTree[1-direction]->fBalance;
+	  if (newParentCurBalance == 1 - 2*direction) { // 1 for "direction" 0; -1 for "direction" 1
+	    root->fBalance = 0;
+	    root->fSubTree[direction]->fBalance = -1 + 2*direction; // -1 for "direction" 0; 1 for "direction" 1
+	  } else if (newParentCurBalance == 0) {
+	    root->fBalance = 0;
+	    root->fSubTree[direction]->fBalance = 0;
+	  } else {
+	    root->fBalance = 1 - 2*direction; // 1 for "direction" 0; -1 for "direction" 1
+	    root->fSubTree[direction]->fBalance = 0;
+	  }
+	  rotate(direction, root->fSubTree[direction]);
+
+	  root->fSubTree[direction]->fBalance = 0; // the new root will be balanced
+	  rotate(1-direction, root);
+	}
+      }
+    }
+  }
+}
+
+Boolean CuePoint::lookup(double& cueTime, u_int64_t& resultClusterOffsetInFile, unsigned& resultBlockNumWithinCluster) {
+  if (cueTime < fCueTime) {
+    if (left() == NULL) {
+      resultClusterOffsetInFile = 0;
+      resultBlockNumWithinCluster = 0;
+      return False;
+    } else {
+      return left()->lookup(cueTime, resultClusterOffsetInFile, resultBlockNumWithinCluster);
+    }
+  } else {
+    if (right() == NULL || !right()->lookup(cueTime, resultClusterOffsetInFile, resultBlockNumWithinCluster)) {
+      // Use this record:
+      cueTime = fCueTime;
+      resultClusterOffsetInFile = fClusterOffsetInFile;
+      resultBlockNumWithinCluster = fBlockNumWithinCluster;
+    }
+    return True;
+  }
+}
+
+void CuePoint::fprintf(FILE* fid, CuePoint* cuePoint) {
+  if (cuePoint != NULL) {
+    ::fprintf(fid, "[");
+    fprintf(fid, cuePoint->left());
+
+    ::fprintf(fid, ",%.1f{%d},", cuePoint->fCueTime, cuePoint->fBalance);
+
+    fprintf(fid, cuePoint->right());
+    ::fprintf(fid, "]");
+  }
+}
+
+void CuePoint::rotate(unsigned direction/*0 => left; 1 => right*/, CuePoint*& root) {
+  CuePoint* pivot = root->fSubTree[1-direction]; // ASSERT: pivot != NULL
+  root->fSubTree[1-direction] = pivot->fSubTree[direction];
+  pivot->fSubTree[direction] = root;
+  root = pivot;
+}
diff --git a/liveMedia/MatroskaFileParser.cpp b/liveMedia/MatroskaFileParser.cpp
new file mode 100644
index 0000000..bac58b9
--- /dev/null
+++ b/liveMedia/MatroskaFileParser.cpp
@@ -0,0 +1,1512 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A parser for a Matroska file.
+// Implementation
+
+#include "MatroskaFileParser.hh"
+#include "MatroskaDemuxedTrack.hh"
+#include <ByteStreamFileSource.hh>
+#include <GroupsockHelper.hh> // for "gettimeofday()
+
+MatroskaFileParser::MatroskaFileParser(MatroskaFile& ourFile, FramedSource* inputSource,
+				       FramedSource::onCloseFunc* onEndFunc, void* onEndClientData,
+				       MatroskaDemux* ourDemux)
+  : StreamParser(inputSource, onEndFunc, onEndClientData, continueParsing, this),
+    fOurFile(ourFile), fInputSource(inputSource),
+    fOnEndFunc(onEndFunc), fOnEndClientData(onEndClientData),
+    fOurDemux(ourDemux),
+    fCurOffsetInFile(0), fSavedCurOffsetInFile(0), fLimitOffsetInFile(0),
+    fNumHeaderBytesToSkip(0), fClusterTimecode(0), fBlockTimecode(0),
+    fFrameSizesWithinBlock(NULL),
+    fPresentationTimeOffset(0.0) {
+  if (ourDemux == NULL) {
+    // Initialization
+    fCurrentParseState = PARSING_START_OF_FILE;
+
+    continueParsing();
+  } else {
+    fCurrentParseState = LOOKING_FOR_CLUSTER;
+    // In this case, parsing (of track data) doesn't start until a client starts reading from a track.
+  }
+}
+
+MatroskaFileParser::~MatroskaFileParser() {
+  delete[] fFrameSizesWithinBlock;
+  Medium::close(fInputSource);
+}
+
+void MatroskaFileParser::seekToTime(double& seekNPT) {
+#ifdef DEBUG
+  fprintf(stderr, "seekToTime(%f)\n", seekNPT);
+#endif
+  if (seekNPT <= 0.0) {
+#ifdef DEBUG
+    fprintf(stderr, "\t=> start of file\n");
+#endif
+    seekNPT = 0.0;
+    seekToFilePosition(0);
+  } else if (seekNPT >= fOurFile.fileDuration()) {
+#ifdef DEBUG
+    fprintf(stderr, "\t=> end of file\n");
+#endif
+    seekNPT = fOurFile.fileDuration();
+    seekToEndOfFile();
+  } else {
+    u_int64_t clusterOffsetInFile;
+    unsigned blockNumWithinCluster;
+    if (!fOurFile.lookupCuePoint(seekNPT, clusterOffsetInFile, blockNumWithinCluster)) {
+#ifdef DEBUG
+      fprintf(stderr, "\t=> not supported\n");
+#endif
+      return; // seeking not supported
+    }
+
+#ifdef DEBUG
+    fprintf(stderr, "\t=> seek time %f, file position %llu, block number within cluster %d\n", seekNPT, clusterOffsetInFile, blockNumWithinCluster);
+#endif
+    seekToFilePosition(clusterOffsetInFile);
+    fCurrentParseState = LOOKING_FOR_BLOCK;
+    // LATER handle "blockNumWithinCluster"; for now, we assume that it's 0 #####
+  }
+}
+
+void MatroskaFileParser
+::continueParsing(void* clientData, unsigned char* /*ptr*/, unsigned /*size*/, struct timeval /*presentationTime*/) {
+  ((MatroskaFileParser*)clientData)->continueParsing();
+}
+
+void MatroskaFileParser::continueParsing() {
+  if (fInputSource != NULL) {
+    if (!parse()) {
+      // We didn't complete the parsing, because we had to read more data from the source, or because we're waiting for
+      // another read from downstream.  Once that happens, we'll get called again.
+      return;
+    }
+  }
+
+  // We successfully parsed the file.  Call our 'done' function now:
+  if (fOnEndFunc != NULL) (*fOnEndFunc)(fOnEndClientData);
+}
+
+Boolean MatroskaFileParser::parse() {
+  Boolean areDone = False;
+
+  if (fInputSource->isCurrentlyAwaitingData()) return False;
+      // Our input source is currently being read. Wait until that read completes
+  try {
+    skipRemainingHeaderBytes(True); // if any
+    do {
+      if (fInputSource->isCurrentlyAwaitingData()) return False;
+          // Our input source is currently being read. Wait until that read completes
+
+      switch (fCurrentParseState) {
+        case PARSING_START_OF_FILE: {
+	  areDone = parseStartOfFile();
+	  break;
+	}
+        case LOOKING_FOR_TRACKS: {
+	  lookForNextTrack();
+	  break;
+	}
+        case PARSING_TRACK: {
+	  areDone = parseTrack();
+	  if (areDone && fOurFile.fCuesOffset > 0) {
+	    // We've finished parsing the 'Track' information.  There are also 'Cues' in the file, so parse those before finishing:
+	    // Seek to the specified position in the file.  We were already told that the 'Cues' begins there:
+#ifdef DEBUG
+	    fprintf(stderr, "Seeking to file position %llu (the previously-reported location of 'Cues')\n", fOurFile.fCuesOffset);
+#endif
+	    seekToFilePosition(fOurFile.fCuesOffset);
+	    fCurrentParseState = PARSING_CUES;
+	    areDone = False;
+	  }
+	  break;
+	}
+        case PARSING_CUES: {
+	  areDone = parseCues();
+	  break;
+	}
+        case LOOKING_FOR_CLUSTER: {
+	  if (fOurFile.fClusterOffset > 0) {
+	    // Optimization: Seek to the specified position in the file.  We were already told that the 'Cluster' begins there:
+#ifdef DEBUG
+	    fprintf(stderr, "Optimization: Seeking to file position %llu (the previously-reported location of a 'Cluster')\n", fOurFile.fClusterOffset);
+#endif
+	    seekToFilePosition(fOurFile.fClusterOffset);
+	  }
+	  fCurrentParseState = LOOKING_FOR_BLOCK;
+	  break;
+	}
+        case LOOKING_FOR_BLOCK: {
+	  lookForNextBlock();
+	  break;
+	}
+        case PARSING_BLOCK: {
+	  parseBlock();
+	  break;
+	}
+        case DELIVERING_FRAME_WITHIN_BLOCK: {
+	  if (!deliverFrameWithinBlock()) return False;
+	  break;
+	}
+        case DELIVERING_FRAME_BYTES: {
+	  deliverFrameBytes();
+	  return False; // Halt parsing for now.  A new 'read' from downstream will cause parsing to resume.
+	  break;
+	}
+      }
+    } while (!areDone);
+
+    return True;
+  } catch (int /*e*/) {
+#ifdef DEBUG
+    fprintf(stderr, "MatroskaFileParser::parse() EXCEPTION (This is normal behavior - *not* an error)\n");
+#endif
+    return False;  // the parsing got interrupted
+  }
+}
+
+Boolean MatroskaFileParser::parseStartOfFile() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing start of file\n");
+#endif
+  EBMLId id;
+  EBMLDataSize size;
+
+  // The file must begin with the standard EBML header (which we skip):
+  if (!parseEBMLIdAndSize(id, size) || id != MATROSKA_ID_EBML) {
+    fOurFile.envir() << "ERROR: File does not begin with an EBML header\n";
+    return True; // We're done with the file, because it's not valid
+  }
+#ifdef DEBUG
+    fprintf(stderr, "MatroskaFileParser::parseStartOfFile(): Parsed id 0x%s (%s), size: %lld\n", id.hexString(), id.stringName(), size.val());
+#endif
+
+  fCurrentParseState = LOOKING_FOR_TRACKS;
+  skipHeader(size);
+
+  return False; // because we have more parsing to do - inside the 'Track' header
+}
+
+void MatroskaFileParser::lookForNextTrack() {
+#ifdef DEBUG
+  fprintf(stderr, "looking for Track\n");
+#endif
+  EBMLId id;
+  EBMLDataSize size;
+
+  // Read and skip over (or enter) each Matroska header, until we get to a 'Track'.
+  while (fCurrentParseState == LOOKING_FOR_TRACKS) {
+    while (!parseEBMLIdAndSize(id, size)) {}
+#ifdef DEBUG
+    fprintf(stderr, "MatroskaFileParser::lookForNextTrack(): Parsed id 0x%s (%s), size: %lld\n", id.hexString(), id.stringName(), size.val());
+#endif
+    switch (id.val()) {
+      case MATROSKA_ID_SEGMENT: { // 'Segment' header: enter this
+	// Remember the position, within the file, of the start of Segment data, because Seek Positions are relative to this:
+	fOurFile.fSegmentDataOffset = fCurOffsetInFile;
+	break;
+      }
+      case MATROSKA_ID_SEEK_HEAD: { // 'Seek Head' header: enter this
+	break;
+      }
+      case MATROSKA_ID_SEEK: { // 'Seek' header: enter this
+	break;
+      }
+      case MATROSKA_ID_SEEK_ID: { // 'Seek ID' header: get this value
+	if (parseEBMLNumber(fLastSeekId)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tSeek ID 0x%s:\t%s\n", fLastSeekId.hexString(), fLastSeekId.stringName());
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_SEEK_POSITION: { // 'Seek Position' header: get this value
+	u_int64_t seekPosition;
+	if (parseEBMLVal_unsigned64(size, seekPosition)) {
+	  u_int64_t offsetInFile = fOurFile.fSegmentDataOffset + seekPosition;
+#ifdef DEBUG
+	  fprintf(stderr, "\tSeek Position %llu (=> offset within the file: %llu (0x%llx))\n", seekPosition, offsetInFile, offsetInFile);
+#endif
+	  // The only 'Seek Position's that we care about are for 'Cluster' and 'Cues':
+	  if (fLastSeekId == MATROSKA_ID_CLUSTER) {
+	    fOurFile.fClusterOffset = offsetInFile;
+	  } else if (fLastSeekId == MATROSKA_ID_CUES) {
+	    fOurFile.fCuesOffset = offsetInFile;
+	  }
+	}
+	break;
+      }
+      case MATROSKA_ID_INFO: { // 'Segment Info' header: enter this
+	break;
+      }
+      case MATROSKA_ID_TIMECODE_SCALE: { // 'Timecode Scale' header: get this value
+        unsigned timecodeScale;
+	if (parseEBMLVal_unsigned(size, timecodeScale) && timecodeScale > 0) {
+	  fOurFile.fTimecodeScale = timecodeScale;
+#ifdef DEBUG
+	  fprintf(stderr, "\tTimecode Scale %u ns (=> Segment Duration == %f seconds)\n",
+		  fOurFile.timecodeScale(), fOurFile.segmentDuration()*(fOurFile.fTimecodeScale/1000000000.0f));
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_DURATION: { // 'Segment Duration' header: get this value
+	if (parseEBMLVal_float(size, fOurFile.fSegmentDuration)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tSegment Duration %f (== %f seconds)\n",
+		  fOurFile.segmentDuration(), fOurFile.segmentDuration()*(fOurFile.fTimecodeScale/1000000000.0f));
+#endif
+	}
+	break;
+      }
+#ifdef DEBUG
+      case MATROSKA_ID_TITLE: { // 'Segment Title': display this value
+	char* title;
+	if (parseEBMLVal_string(size, title)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tTitle: %s\n", title);
+#endif
+	  delete[] title;
+	}
+	break;
+      }
+#endif
+      case MATROSKA_ID_TRACKS: { // enter this, and move on to parsing 'Tracks'
+	fLimitOffsetInFile = fCurOffsetInFile + size.val(); // Make sure we don't read past the end of this header
+	fCurrentParseState = PARSING_TRACK;
+	break;
+      }
+      default: { // skip over this header
+	skipHeader(size);
+	break;
+      }
+    }
+    setParseState();
+  }
+}
+
+Boolean MatroskaFileParser::parseTrack() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing Track\n");
+#endif
+  // Read and process each Matroska header, until we get to the end of the Track:
+  MatroskaTrack* track = NULL;
+  EBMLId id;
+  EBMLDataSize size;
+  while (fCurOffsetInFile < fLimitOffsetInFile) {
+    while (!parseEBMLIdAndSize(id, size)) {}
+#ifdef DEBUG
+    if (id == MATROSKA_ID_TRACK_ENTRY) fprintf(stderr, "\n"); // makes debugging output easier to read
+    fprintf(stderr, "MatroskaFileParser::parseTrack(): Parsed id 0x%s (%s), size: %lld\n", id.hexString(), id.stringName(), size.val());
+#endif
+    switch (id.val()) {
+      case MATROSKA_ID_TRACK_ENTRY: { // 'Track Entry' header: enter this
+	// Create a new "MatroskaTrack" object for this entry:
+	if (track != NULL && track->trackNumber == 0) delete track; // We had a previous "MatroskaTrack" object that was never used
+	track = new MatroskaTrack;
+	break;
+      }
+      case MATROSKA_ID_TRACK_NUMBER: {
+	unsigned trackNumber;
+	if (parseEBMLVal_unsigned(size, trackNumber)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tTrack Number %d\n", trackNumber);
+#endif
+	  if (track != NULL && trackNumber != 0) {
+	    track->trackNumber = trackNumber;
+	    fOurFile.addTrack(track, trackNumber);
+	  }
+	}
+	break;
+      }
+      case MATROSKA_ID_TRACK_TYPE: {
+	unsigned trackType;
+	if (parseEBMLVal_unsigned(size, trackType) && track != NULL) {
+	  // We convert the Matroska 'track type' code into our own code (which we can use as a bitmap):
+	  track->trackType
+	    = trackType == 1 ? MATROSKA_TRACK_TYPE_VIDEO : trackType == 2 ? MATROSKA_TRACK_TYPE_AUDIO
+	    : trackType == 0x11 ? MATROSKA_TRACK_TYPE_SUBTITLE : MATROSKA_TRACK_TYPE_OTHER;
+#ifdef DEBUG
+	  fprintf(stderr, "\tTrack Type 0x%02x (%s)\n", trackType,
+		  track->trackType == MATROSKA_TRACK_TYPE_VIDEO ? "video" :
+		  track->trackType == MATROSKA_TRACK_TYPE_AUDIO ? "audio" :
+		  track->trackType == MATROSKA_TRACK_TYPE_SUBTITLE ? "subtitle" :
+		  "<other>");
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_FLAG_ENABLED: {
+	unsigned flagEnabled;
+	if (parseEBMLVal_unsigned(size, flagEnabled)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tTrack is Enabled: %d\n", flagEnabled);
+#endif
+	  if (track != NULL) track->isEnabled = flagEnabled != 0;
+	}
+	break;
+      }
+      case MATROSKA_ID_FLAG_DEFAULT: {
+	unsigned flagDefault;
+	if (parseEBMLVal_unsigned(size, flagDefault)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tTrack is Default: %d\n", flagDefault);
+#endif
+	  if (track != NULL) track->isDefault = flagDefault != 0;
+	}
+	break;
+      }
+      case MATROSKA_ID_FLAG_FORCED: {
+	unsigned flagForced;
+	if (parseEBMLVal_unsigned(size, flagForced)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tTrack is Forced: %d\n", flagForced);
+#endif
+	  if (track != NULL) track->isForced = flagForced != 0;
+	}
+	break;
+      }
+      case MATROSKA_ID_DEFAULT_DURATION: {
+	unsigned defaultDuration;
+	if (parseEBMLVal_unsigned(size, defaultDuration)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tDefault duration %f ms\n", defaultDuration/1000000.0);
+#endif
+	  if (track != NULL) track->defaultDuration = defaultDuration;
+	}
+	break;
+      }
+      case MATROSKA_ID_MAX_BLOCK_ADDITION_ID: {
+	unsigned maxBlockAdditionID;
+	if (parseEBMLVal_unsigned(size, maxBlockAdditionID)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tMax Block Addition ID: %u\n", maxBlockAdditionID);
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_NAME: {
+	char* name;
+	if (parseEBMLVal_string(size, name)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tName: %s\n", name);
+#endif
+	  if (track != NULL) {
+	    delete[] track->name; track->name = name;
+	  } else {
+	    delete[] name;
+	  }
+	}
+	break;
+      }
+      case MATROSKA_ID_LANGUAGE: {
+	char* language;
+	if (parseEBMLVal_string(size, language)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tLanguage: %s\n", language);
+#endif
+	  if (track != NULL) {
+	    delete[] track->language; track->language = language;
+	  } else {
+	    delete[] language;
+	  }
+	}
+	break;
+      }
+      case MATROSKA_ID_CODEC: {
+	char* codecID;
+	if (parseEBMLVal_string(size, codecID)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tCodec ID: %s\n", codecID);
+#endif
+	  if (track != NULL) {
+	    delete[] track->codecID; track->codecID = codecID;
+
+	    // Also set the track's "mimeType" field, if we can deduce it from the "codecID":
+	    if (strcmp(codecID, "A_PCM/INT/BIG") == 0) {
+	      track->mimeType = "audio/L16";
+	    } else if (strncmp(codecID, "A_MPEG", 6) == 0) {
+	      track->mimeType = "audio/MPEG";
+	    } else if (strncmp(codecID, "A_AAC", 5) == 0) {
+	      track->mimeType = "audio/AAC";
+	    } else if (strncmp(codecID, "A_AC3", 5) == 0) {
+	      track->mimeType = "audio/AC3";
+	    } else if (strncmp(codecID, "A_VORBIS", 8) == 0) {
+	      track->mimeType = "audio/VORBIS";
+	    } else if (strcmp(codecID, "A_OPUS") == 0) {
+	      track->mimeType = "audio/OPUS";
+	      track->codecIsOpus = True;
+	    } else if (strcmp(codecID, "V_MPEG4/ISO/AVC") == 0) {
+	      track->mimeType = "video/H264";
+	    } else if (strcmp(codecID, "V_MPEGH/ISO/HEVC") == 0) {
+	      track->mimeType = "video/H265";
+	    } else if (strncmp(codecID, "V_VP8", 5) == 0) {
+	      track->mimeType = "video/VP8";
+	    } else if (strncmp(codecID, "V_VP9", 5) == 0) {
+	      track->mimeType = "video/VP9";
+	    } else if (strncmp(codecID, "V_THEORA", 8) == 0) {
+	      track->mimeType = "video/THEORA";
+	    } else if (strncmp(codecID, "S_TEXT", 6) == 0) {
+	      track->mimeType = "text/T140";
+	    } else if (strncmp(codecID, "V_MJPEG", 7) == 0) {
+	      track->mimeType = "video/JPEG";
+	    } else if (strncmp(codecID, "V_UNCOMPRESSED", 14) == 0) {
+	      track->mimeType = "video/RAW";
+	    }
+	  } else {
+	    delete[] codecID;
+	  }
+	}
+	break;
+      }
+      case MATROSKA_ID_CODEC_PRIVATE: {
+	u_int8_t* codecPrivate;
+	unsigned codecPrivateSize;
+	if (parseEBMLVal_binary(size, codecPrivate)) {
+	  codecPrivateSize = (unsigned)size.val();
+#ifdef DEBUG
+	  fprintf(stderr, "\tCodec Private: ");
+	  for (unsigned i = 0; i < codecPrivateSize; ++i) fprintf(stderr, "%02x:", codecPrivate[i]);
+	  fprintf(stderr, "\n");
+#endif
+	  if (track != NULL) {
+	    delete[] track->codecPrivate; track->codecPrivate = codecPrivate;
+	    track->codecPrivateSize = codecPrivateSize;
+
+	    // Hack for H.264 and H.265: The 'codec private' data contains
+	    // the size of NAL unit lengths:
+	    if (track->codecID != NULL) {
+	      if (strcmp(track->codecID, "V_MPEG4/ISO/AVC") == 0) { // H.264
+		// Byte 4 of the 'codec private' data contains 'lengthSizeMinusOne':
+		if (codecPrivateSize >= 5) track->subframeSizeSize = (codecPrivate[4]&0x3) + 1;
+	      } else if (strcmp(track->codecID, "V_MPEGH/ISO/HEVC") == 0) { // H.265
+		// H.265 'codec private' data is *supposed* to use the format that's described in
+		// http://lists.matroska.org/pipermail/matroska-devel/2013-September/004567.html
+		// However, some Matroska files use the same format that was used for H.264.
+		// We check for this here, by checking various fields that are supposed to be
+		// 'all-1' in the 'correct' format:
+		if (codecPrivateSize < 23 || (codecPrivate[13]&0xF0) != 0xF0 ||
+		    (codecPrivate[15]&0xFC) != 0xFC || (codecPrivate[16]&0xFC) != 0xFC ||
+		    (codecPrivate[17]&0xF8) != 0xF8 || (codecPrivate[18]&0xF8) != 0xF8) {
+		  // The 'correct' format isn't being used, so assume the H.264 format instead:
+		  track->codecPrivateUsesH264FormatForH265 = True;
+		  
+		  // Byte 4 of the 'codec private' data contains 'lengthSizeMinusOne':
+		  if (codecPrivateSize >= 5) track->subframeSizeSize = (codecPrivate[4]&0x3) + 1;
+		} else {
+		  // This looks like the 'correct' format:
+		  track->codecPrivateUsesH264FormatForH265 = False;
+
+		  // Byte 21 of the 'codec private' data contains 'lengthSizeMinusOne':
+		  track->subframeSizeSize = (codecPrivate[21]&0x3) + 1;
+		}
+	      }
+	    }
+	  } else {
+	    delete[] codecPrivate;
+	  }
+	}
+	break;
+      }
+      case MATROSKA_ID_VIDEO: { // 'Video settings' header: enter this
+	break;
+      }
+      case MATROSKA_ID_PIXEL_WIDTH: {
+	unsigned pixelWidth;
+	if (parseEBMLVal_unsigned(size, pixelWidth)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tPixel Width %d\n", pixelWidth);
+#endif
+      if (track != NULL) track->pixelWidth = pixelWidth;
+	}
+	break;
+      }
+      case MATROSKA_ID_PIXEL_HEIGHT: {
+	unsigned pixelHeight;
+	if (parseEBMLVal_unsigned(size, pixelHeight)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tPixel Height %d\n", pixelHeight);
+#endif
+      if (track != NULL) track->pixelHeight = pixelHeight;
+	}
+	break;
+      }
+      case MATROSKA_ID_DISPLAY_WIDTH: {
+	unsigned displayWidth;
+	if (parseEBMLVal_unsigned(size, displayWidth)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tDisplay Width %d\n", displayWidth);
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_DISPLAY_HEIGHT: {
+	unsigned displayHeight;
+	if (parseEBMLVal_unsigned(size, displayHeight)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tDisplay Height %d\n", displayHeight);
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_DISPLAY_UNIT: {
+	unsigned displayUnit;
+	if (parseEBMLVal_unsigned(size, displayUnit)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tDisplay Unit %d\n", displayUnit);
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_AUDIO: { // 'Audio settings' header: enter this
+	break;
+      }
+      case MATROSKA_ID_SAMPLING_FREQUENCY: {
+	float samplingFrequency;
+	if (parseEBMLVal_float(size, samplingFrequency)) {
+	  if (track != NULL) {
+	    track->samplingFrequency = (unsigned)samplingFrequency;
+#ifdef DEBUG
+	    fprintf(stderr, "\tSampling frequency %f (->%d)\n", samplingFrequency, track->samplingFrequency);
+#endif
+	  }
+	}
+	break;
+      }
+      case MATROSKA_ID_OUTPUT_SAMPLING_FREQUENCY: {
+	float outputSamplingFrequency;
+	if (parseEBMLVal_float(size, outputSamplingFrequency)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tOutput sampling frequency %f\n", outputSamplingFrequency);
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_CHANNELS: {
+	unsigned numChannels;
+	if (parseEBMLVal_unsigned(size, numChannels)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tChannels %d\n", numChannels);
+#endif
+	  if (track != NULL) track->numChannels = numChannels;
+	}
+	break;
+      }
+      case MATROSKA_ID_BIT_DEPTH: {
+	unsigned bitDepth;
+	if (parseEBMLVal_unsigned(size, bitDepth)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tBit Depth %d\n", bitDepth);
+#endif
+	  if (track != NULL) track->bitDepth = bitDepth;
+	}
+	break;
+      }
+      case MATROSKA_ID_CONTENT_ENCODINGS:
+      case MATROSKA_ID_CONTENT_ENCODING: { // 'Content Encodings' or 'Content Encoding' header: enter this
+	break;
+      }
+      case MATROSKA_ID_CONTENT_COMPRESSION: { // 'Content Compression' header: enter this
+	// Note: We currently support only 'Header Stripping' compression, not 'zlib' compression (the default algorithm).
+	// Therefore, we disable this track, unless/until we later see that 'Header Stripping' is supported:
+	if (track != NULL) track->isEnabled = False;
+	break;
+      }
+      case MATROSKA_ID_CONTENT_COMP_ALGO: {
+	unsigned contentCompAlgo;
+	if (parseEBMLVal_unsigned(size, contentCompAlgo)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tContent Compression Algorithm %d (%s)\n", contentCompAlgo,
+		  contentCompAlgo == 0 ? "zlib" : contentCompAlgo == 3 ? "Header Stripping" : "<unknown>");
+#endif
+	  // The only compression algorithm that we support is #3: Header Stripping; disable the track otherwise
+	  if (track != NULL) track->isEnabled = contentCompAlgo == 3;
+	}
+	break;
+      }
+      case MATROSKA_ID_CONTENT_COMP_SETTINGS: {
+	u_int8_t* headerStrippedBytes;
+	unsigned headerStrippedBytesSize;
+	if (parseEBMLVal_binary(size, headerStrippedBytes)) {
+	  headerStrippedBytesSize = (unsigned)size.val();
+#ifdef DEBUG
+	  fprintf(stderr, "\tHeader Stripped Bytes: ");
+	  for (unsigned i = 0; i < headerStrippedBytesSize; ++i) fprintf(stderr, "%02x:", headerStrippedBytes[i]);
+	  fprintf(stderr, "\n");
+#endif
+	  if (track != NULL) {
+	    delete[] track->headerStrippedBytes; track->headerStrippedBytes = headerStrippedBytes;
+	    track->headerStrippedBytesSize = headerStrippedBytesSize;
+	  } else {
+	    delete[] headerStrippedBytes;
+	  }
+	}
+	break;
+      }
+      case MATROSKA_ID_CONTENT_ENCRYPTION: { // 'Content Encrpytion' header: skip this
+	// Note: We don't currently support encryption at all.  Therefore, we disable this track:
+	if (track != NULL) track->isEnabled = False;
+	// Fall through to...
+      }
+      case MATROSKA_ID_COLOR_SPACE: {
+	u_int8_t* colourSpace;
+	unsigned colourSpaceSize;
+	if (parseEBMLVal_binary(size, colourSpace)) {
+	  colourSpaceSize = (unsigned)size.val();
+#ifdef DEBUG
+	  fprintf(stderr, "\tColor space : %02x %02x %02x %02x\n", colourSpace[0], colourSpace[1], colourSpace[2], colourSpace[3]);
+#endif
+      if ((track != NULL) && (colourSpaceSize == 4)) {
+            //convert to sampling value (rfc 4175)
+        if ((strncmp((const char*)colourSpace, "I420", 4) == 0) || (strncmp((const char*)colourSpace, "IYUV", 4) == 0)){ 
+            track->colorSampling = "YCbCr-4:2:0";
+        }
+        else if ((strncmp((const char*)colourSpace, "YUY2", 4) == 0) || (strncmp((const char*)colourSpace, "UYVY", 4) == 0)){
+            track->colorSampling = "YCbCr-4:2:2";
+        }
+        else if (strncmp((const char*)colourSpace, "AYUV", 4) == 0) {
+            track->colorSampling = "YCbCr-4:4:4";
+        }
+        else if ((strncmp((const char*)colourSpace, "Y41P", 4) == 0) || (strncmp((const char*)colourSpace, "Y41T", 4) == 0)) {
+            track->colorSampling = "YCbCr-4:1:1";
+        }
+        else if (strncmp((const char*)colourSpace, "RGBA", 4) == 0) {
+            track->colorSampling = "RGBA";
+        }
+        else if (strncmp((const char*)colourSpace, "BGRA", 4) == 0) {
+            track->colorSampling = "BGRA";
+        }
+      } else {
+        delete[] colourSpace;
+      }
+        }
+        break;
+      }
+    case MATROSKA_ID_PRIMARIES: {
+        unsigned primaries;
+        if (parseEBMLVal_unsigned(size, primaries)) {
+#ifdef DEBUG
+          fprintf(stderr, "\tPrimaries %u\n", primaries);
+#endif
+        if (track != NULL) {
+            switch (primaries) {
+                  case 1: //ITU-R BT.709
+                    track->colorimetry = "BT709-2";
+                    break;
+                  case 7: //SMPTE 240M
+                    track->colorimetry = "SMPTE240M";
+                    break;
+                  case 2: //Unspecified
+                  case 3: //Reserved
+                  case 4: //ITU-R BT.470M
+                  case 5: //ITU-R BT.470BG
+                  case 6: //SMPTE 170M
+                  case 8: //FILM
+                  case 9: //ITU-R BT.2020
+                  default:
+#ifdef DEBUG
+                     fprintf(stderr, "\tUnsupported color primaries %u\n", primaries);
+#endif
+                    break;
+                }
+            }
+        }
+      }
+      default: { // We don't process this header, so just skip over it:
+	skipHeader(size);
+	break;
+      }
+    }
+    setParseState();
+  }
+
+  fLimitOffsetInFile = 0; // reset
+  if (track != NULL && track->trackNumber == 0) delete track; // We had a previous "MatroskaTrack" object that was never used
+  return True; // we're done parsing track entries
+}
+
+void MatroskaFileParser::lookForNextBlock() {
+#ifdef DEBUG
+  fprintf(stderr, "looking for Block\n");
+#endif
+  // Read and skip over each Matroska header, until we get to a 'Cluster':
+  EBMLId id;
+  EBMLDataSize size;
+  while (fCurrentParseState == LOOKING_FOR_BLOCK) {
+    while (!parseEBMLIdAndSize(id, size)) {}
+#ifdef DEBUG
+    fprintf(stderr, "MatroskaFileParser::lookForNextBlock(): Parsed id 0x%s (%s), size: %lld\n", id.hexString(), id.stringName(), size.val());
+#endif
+    switch (id.val()) {
+      case MATROSKA_ID_SEGMENT: { // 'Segment' header: enter this
+	break;
+      }
+      case MATROSKA_ID_CLUSTER: { // 'Cluster' header: enter this
+	break;
+      }
+      case MATROSKA_ID_TIMECODE: { // 'Timecode' header: get this value
+	unsigned timecode;
+	if (parseEBMLVal_unsigned(size, timecode)) {
+	  fClusterTimecode = timecode;
+#ifdef DEBUG
+	  fprintf(stderr, "\tCluster timecode: %d (== %f seconds)\n", fClusterTimecode, fClusterTimecode*(fOurFile.fTimecodeScale/1000000000.0));
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_BLOCK_GROUP: { // 'Block Group' header: enter this
+	break;
+      }
+      case MATROSKA_ID_SIMPLEBLOCK:
+      case MATROSKA_ID_BLOCK: { // 'SimpleBlock' or 'Block' header: enter this (and we're done)
+	fBlockSize = (unsigned)size.val();
+	fCurrentParseState = PARSING_BLOCK;
+	break;
+      }
+      case MATROSKA_ID_BLOCK_DURATION: { // 'Block Duration' header: get this value (but we currently don't do anything with it)
+	unsigned blockDuration;
+	if (parseEBMLVal_unsigned(size, blockDuration)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tblock duration: %d (== %f ms)\n", blockDuration, (float)(blockDuration*fOurFile.fTimecodeScale/1000000.0));
+#endif
+	}
+	break;
+      }
+      // Attachments are parsed only if we're in DEBUG mode (otherwise we just skip over them):
+#ifdef DEBUG
+      case MATROSKA_ID_ATTACHMENTS: { // 'Attachments': enter this
+	break;
+      }
+      case MATROSKA_ID_ATTACHED_FILE: { // 'Attached File': enter this
+	break;
+      }
+      case MATROSKA_ID_FILE_DESCRIPTION: { // 'File Description': get this value
+	char* fileDescription;
+	if (parseEBMLVal_string(size, fileDescription)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tFile Description: %s\n", fileDescription);
+#endif
+	  delete[] fileDescription;
+	}
+	break;
+      }
+      case MATROSKA_ID_FILE_NAME: { // 'File Name': get this value
+	char* fileName;
+	if (parseEBMLVal_string(size, fileName)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tFile Name: %s\n", fileName);
+#endif
+	  delete[] fileName;
+	}
+	break;
+      }
+      case MATROSKA_ID_FILE_MIME_TYPE: { // 'File MIME Type': get this value
+	char* fileMIMEType;
+	if (parseEBMLVal_string(size, fileMIMEType)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tFile MIME Type: %s\n", fileMIMEType);
+#endif
+	  delete[] fileMIMEType;
+	}
+	break;
+      }
+      case MATROSKA_ID_FILE_UID: { // 'File UID': get this value
+	unsigned fileUID;
+	if (parseEBMLVal_unsigned(size, fileUID)) {
+#ifdef DEBUG
+	  fprintf(stderr, "\tFile UID: 0x%x\n", fileUID);
+#endif
+	}
+	break;
+      }
+#endif
+      default: { // skip over this header
+	skipHeader(size);
+	break;
+      }
+    }
+    setParseState();
+  }
+}
+
+Boolean MatroskaFileParser::parseCues() {
+#if defined(DEBUG) || defined(DEBUG_CUES)
+  fprintf(stderr, "parsing Cues\n");
+#endif
+  EBMLId id;
+  EBMLDataSize size;
+
+  // Read the next header, which should be MATROSKA_ID_CUES:
+  if (!parseEBMLIdAndSize(id, size) || id != MATROSKA_ID_CUES) return True; // The header wasn't what we expected, so we're done
+  fLimitOffsetInFile = fCurOffsetInFile + size.val(); // Make sure we don't read past the end of this header
+
+  double currentCueTime = 0.0;
+  u_int64_t currentClusterOffsetInFile = 0;
+
+  while (fCurOffsetInFile < fLimitOffsetInFile) {
+    while (!parseEBMLIdAndSize(id, size)) {}
+#ifdef DEBUG_CUES
+    if (id == MATROSKA_ID_CUE_POINT) fprintf(stderr, "\n"); // makes debugging output easier to read
+    fprintf(stderr, "MatroskaFileParser::parseCues(): Parsed id 0x%s (%s), size: %lld\n", id.hexString(), id.stringName(), size.val());
+#endif
+    switch (id.val()) {
+      case MATROSKA_ID_CUE_POINT: { // 'Cue Point' header: enter this
+	break;
+      }
+      case MATROSKA_ID_CUE_TIME: { // 'Cue Time' header: get this value
+	unsigned cueTime;
+	if (parseEBMLVal_unsigned(size, cueTime)) {
+	  currentCueTime = cueTime*(fOurFile.fTimecodeScale/1000000000.0);
+#ifdef DEBUG_CUES
+	  fprintf(stderr, "\tCue Time %d (== %f seconds)\n", cueTime, currentCueTime);
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_CUE_TRACK_POSITIONS: { // 'Cue Track Positions' header: enter this
+	break;
+      }
+      case MATROSKA_ID_CUE_TRACK: { // 'Cue Track' header: get this value (but only for debugging; we don't do anything with it)
+	unsigned cueTrack;
+	if (parseEBMLVal_unsigned(size, cueTrack)) {
+#ifdef DEBUG_CUES
+	  fprintf(stderr, "\tCue Track %d\n", cueTrack);
+#endif
+	}
+	break;
+      }
+      case MATROSKA_ID_CUE_CLUSTER_POSITION: { // 'Cue Cluster Position' header: get this value
+	u_int64_t cueClusterPosition;
+	if (parseEBMLVal_unsigned64(size, cueClusterPosition)) {
+	  currentClusterOffsetInFile = fOurFile.fSegmentDataOffset + cueClusterPosition;
+#ifdef DEBUG_CUES
+	  fprintf(stderr, "\tCue Cluster Position %llu (=> offset within the file: %llu (0x%llx))\n", cueClusterPosition, currentClusterOffsetInFile, currentClusterOffsetInFile);
+#endif
+	  // Record this cue point:
+	  fOurFile.addCuePoint(currentCueTime, currentClusterOffsetInFile, 1/*default block number within cluster*/);
+	}
+	break;
+      }
+      case MATROSKA_ID_CUE_BLOCK_NUMBER: { // 'Cue Block Number' header: get this value
+	unsigned cueBlockNumber;
+	if (parseEBMLVal_unsigned(size, cueBlockNumber) && cueBlockNumber != 0) {
+#ifdef DEBUG_CUES
+	  fprintf(stderr, "\tCue Block Number %d\n", cueBlockNumber);
+#endif
+	  // Record this cue point (overwriting any existing entry for this cue time):
+	  fOurFile.addCuePoint(currentCueTime, currentClusterOffsetInFile, cueBlockNumber);
+	}
+	break;
+      }
+      default: { // We don't process this header, so just skip over it:
+	skipHeader(size);
+	break;
+      }
+    }
+    setParseState();
+  }
+
+  fLimitOffsetInFile = 0; // reset
+#if defined(DEBUG) || defined(DEBUG_CUES)
+  fprintf(stderr, "done parsing Cues\n");
+#endif
+#ifdef DEBUG_CUES
+  fprintf(stderr, "Cue Point tree: ");
+  fOurFile.printCuePoints(stderr);
+  fprintf(stderr, "\n");
+#endif
+  return True; // we're done parsing Cues
+}
+
+typedef enum { NoLacing, XiphLacing, FixedSizeLacing, EBMLLacing } MatroskaLacingType;
+
+void MatroskaFileParser::parseBlock() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing SimpleBlock or Block\n");
+#endif
+  do {
+    unsigned blockStartPos = curOffset();
+
+    // The block begins with the track number:
+    EBMLNumber trackNumber;
+    if (!parseEBMLNumber(trackNumber)) break;
+    fBlockTrackNumber = (unsigned)trackNumber.val();
+
+    // If this track is not being read, then skip the rest of this block, and look for another one:
+    if (fOurDemux->lookupDemuxedTrack(fBlockTrackNumber) == NULL) {
+      unsigned headerBytesSeen = curOffset() - blockStartPos;
+      if (headerBytesSeen < fBlockSize) {
+	skipBytes(fBlockSize - headerBytesSeen);
+      }
+#ifdef DEBUG
+      fprintf(stderr, "\tSkipped block for unused track number %d\n", fBlockTrackNumber);
+#endif
+      fCurrentParseState = LOOKING_FOR_BLOCK;
+      setParseState();
+      return;
+    }
+
+    MatroskaTrack* track = fOurFile.lookup(fBlockTrackNumber);
+    if (track == NULL) break; // shouldn't happen
+
+    // The next two bytes are the block's timecode (relative to the cluster timecode)
+    fBlockTimecode = (get1Byte()<<8)|get1Byte();
+
+    // The next byte indicates the type of 'lacing' used:
+    u_int8_t c = get1Byte();
+    c &= 0x6; // we're interested in bits 5-6 only
+    MatroskaLacingType lacingType = (c==0x0)?NoLacing : (c==0x02)?XiphLacing : (c==0x04)?FixedSizeLacing : EBMLLacing;
+#ifdef DEBUG
+    fprintf(stderr, "\ttrack number %d, timecode %d (=> %f seconds), %s lacing\n", fBlockTrackNumber, fBlockTimecode, (fClusterTimecode+fBlockTimecode)*(fOurFile.fTimecodeScale/1000000000.0), (lacingType==NoLacing)?"no" : (lacingType==XiphLacing)?"Xiph" : (lacingType==FixedSizeLacing)?"fixed-size" : "EBML");
+#endif
+
+    if (lacingType == NoLacing) {
+      fNumFramesInBlock = 1;
+    } else {
+      // The next byte tells us how many frames are present in this block
+      fNumFramesInBlock = get1Byte() + 1;
+    }
+    delete[] fFrameSizesWithinBlock; fFrameSizesWithinBlock = new unsigned[fNumFramesInBlock];
+    if (fFrameSizesWithinBlock == NULL) break;
+  
+    if (lacingType == NoLacing) {
+      unsigned headerBytesSeen = curOffset() - blockStartPos;
+      if (headerBytesSeen > fBlockSize) break;
+
+      fFrameSizesWithinBlock[0] = fBlockSize - headerBytesSeen;
+    } else if (lacingType == FixedSizeLacing) {
+      unsigned headerBytesSeen = curOffset() - blockStartPos;
+      if (headerBytesSeen > fBlockSize) break;
+
+      unsigned frameBytesAvailable = fBlockSize - headerBytesSeen;
+      unsigned constantFrameSize = frameBytesAvailable/fNumFramesInBlock;
+
+      for (unsigned i = 0; i < fNumFramesInBlock; ++i) {
+	fFrameSizesWithinBlock[i] = constantFrameSize;
+      }
+      // If there are any bytes left over, assign them to the last frame:
+      fFrameSizesWithinBlock[fNumFramesInBlock-1] += frameBytesAvailable%fNumFramesInBlock;
+    } else { // EBML or Xiph lacing
+      unsigned curFrameSize = 0;
+      unsigned frameSizesTotal = 0;
+      unsigned i;
+
+      for (i = 0; i < fNumFramesInBlock-1; ++i) {
+	if (lacingType == EBMLLacing) {
+	  EBMLNumber frameSize;
+	  if (!parseEBMLNumber(frameSize)) break;
+	  unsigned fsv = (unsigned)frameSize.val();
+
+	  if (i == 0) {
+	    curFrameSize = fsv;
+	  } else {
+	    // The value we read is a signed value, that's added to the previous frame size, to get the current frame size:
+	    unsigned toSubtract = (fsv>0xFFFFFF)?0x07FFFFFF : (fsv>0xFFFF)?0x0FFFFF : (fsv>0xFF)?0x1FFF : 0x3F;
+	    int fsv_signed = fsv - toSubtract;
+	    curFrameSize += fsv_signed;
+	    if ((int)curFrameSize < 0) break;
+	  }
+	} else { // Xiph lacing
+	  curFrameSize = 0;
+	  u_int8_t c;
+	  do {
+	    c = get1Byte();
+	    curFrameSize += c;
+	  } while (c == 0xFF);
+	}
+	fFrameSizesWithinBlock[i] = curFrameSize;
+	frameSizesTotal += curFrameSize;
+      }
+      if (i != fNumFramesInBlock-1) break; // an error occurred within the "for" loop
+
+      // Compute the size of the final frame within the block (from the block's size, and the frame sizes already computed):)
+      unsigned headerBytesSeen = curOffset() - blockStartPos;
+      if (headerBytesSeen + frameSizesTotal > fBlockSize) break;
+      fFrameSizesWithinBlock[i] = fBlockSize - (headerBytesSeen + frameSizesTotal);
+    }
+
+    // We're done parsing headers within the block, and (as a result) we now know the sizes of all frames within the block.
+    // If we have 'stripped bytes' that are common to (the front of) all frames, then count them now:
+    if (track->headerStrippedBytesSize != 0) {
+      for (unsigned i = 0; i < fNumFramesInBlock; ++i) fFrameSizesWithinBlock[i] += track->headerStrippedBytesSize;
+    }
+#ifdef DEBUG
+    fprintf(stderr, "\tThis block contains %d frame(s); size(s):", fNumFramesInBlock);
+    unsigned frameSizesTotal = 0;
+    for (unsigned i = 0; i < fNumFramesInBlock; ++i) {
+      fprintf(stderr, " %d", fFrameSizesWithinBlock[i]);
+      frameSizesTotal += fFrameSizesWithinBlock[i];
+    }
+    if (fNumFramesInBlock > 1) fprintf(stderr, " (total: %u)", frameSizesTotal);
+    fprintf(stderr, " bytes\n");
+#endif
+    // Next, start delivering these frames:
+    fCurrentParseState = DELIVERING_FRAME_WITHIN_BLOCK;
+    fCurOffsetWithinFrame = fNextFrameNumberToDeliver = 0;
+    setParseState();
+    return;
+  } while (0);
+
+  // An error occurred.  Try to recover:
+#ifdef DEBUG
+  fprintf(stderr, "parseBlock(): Error parsing data; trying to recover...\n");
+#endif
+  fCurrentParseState = LOOKING_FOR_BLOCK;
+}
+
+Boolean MatroskaFileParser::deliverFrameWithinBlock() {
+#ifdef DEBUG
+  fprintf(stderr, "delivering frame within SimpleBlock or Block\n");
+#endif
+  do {
+    MatroskaTrack* track = fOurFile.lookup(fBlockTrackNumber);
+    if (track == NULL) break; // shouldn't happen
+
+    MatroskaDemuxedTrack* demuxedTrack = fOurDemux->lookupDemuxedTrack(fBlockTrackNumber);
+    if (demuxedTrack == NULL) break; // shouldn't happen
+    if (!demuxedTrack->isCurrentlyAwaitingData()) {
+      // Someone has been reading this stream, but isn't right now.
+      // We can't deliver this frame until he asks for it, so punt for now.
+      // The next time he asks for a frame, he'll get it.
+#ifdef DEBUG
+      fprintf(stderr, "\tdeferring delivery of frame #%d (%d bytes)", fNextFrameNumberToDeliver, fFrameSizesWithinBlock[fNextFrameNumberToDeliver]);
+      if (track->haveSubframes()) fprintf(stderr, "[offset %d]", fCurOffsetWithinFrame);
+      fprintf(stderr, "\n");
+#endif
+      restoreSavedParserState(); // so we read from the beginning next time
+      return False;
+    }
+
+    unsigned frameSize;
+    u_int8_t const* specialFrameSource = NULL;
+    u_int8_t const opusCommentHeader[16]
+      = {'O','p','u','s','T','a','g','s', 0, 0, 0, 0, 0, 0, 0, 0};
+    if (track->codecIsOpus && demuxedTrack->fOpusTrackNumber < 2) {
+      // Special case for Opus audio.  The first frame (the 'configuration' header) comes from
+      // the 'private data'.  The second frame (the 'comment' header) comes is synthesized by
+      // us here:
+      if (demuxedTrack->fOpusTrackNumber == 0) {
+	specialFrameSource = track->codecPrivate;
+	frameSize = track->codecPrivateSize;
+      } else { // demuxedTrack->fOpusTrackNumber == 1
+	specialFrameSource = opusCommentHeader;
+	frameSize = sizeof opusCommentHeader;
+      }
+      ++demuxedTrack->fOpusTrackNumber;
+    } else {
+      frameSize = fFrameSizesWithinBlock[fNextFrameNumberToDeliver];
+      if (track->haveSubframes()) {
+	// The next "track->subframeSizeSize" bytes contain the length of a 'subframe':
+	if (fCurOffsetWithinFrame + track->subframeSizeSize > frameSize) break; // sanity check
+	unsigned subframeSize = 0;
+	for (unsigned i = 0; i < track->subframeSizeSize; ++i) {
+	  u_int8_t c;
+	  getCommonFrameBytes(track, &c, 1, 0);
+	  if (fCurFrameNumBytesToGet > 0) { // it'll be 1
+	    c = get1Byte();
+	    ++fCurOffsetWithinFrame;
+	  }
+	  subframeSize = subframeSize*256 + c;
+	}
+	if (subframeSize == 0 || fCurOffsetWithinFrame + subframeSize > frameSize) break; // sanity check
+	frameSize = subframeSize;
+      }
+    }
+
+    // Compute the presentation time of this frame (from the cluster timecode, the block timecode, and the default duration):
+    double pt = (fClusterTimecode+fBlockTimecode)*(fOurFile.fTimecodeScale/1000000000.0)
+      + fNextFrameNumberToDeliver*(track->defaultDuration/1000000000.0);
+    if (fPresentationTimeOffset == 0.0) {
+      // This is the first time we've computed a presentation time.  Compute an offset to make the presentation times aligned
+      // with 'wall clock' time:
+      struct timeval timeNow;
+      gettimeofday(&timeNow, NULL);
+      double ptNow = timeNow.tv_sec + timeNow.tv_usec/1000000.0;
+      fPresentationTimeOffset = ptNow - pt;
+    }
+    pt += fPresentationTimeOffset;
+    struct timeval presentationTime;
+    presentationTime.tv_sec = (unsigned)pt;
+    presentationTime.tv_usec = (unsigned)((pt - presentationTime.tv_sec)*1000000);
+    unsigned durationInMicroseconds;
+    if (specialFrameSource != NULL) {
+      durationInMicroseconds = 0;
+    } else { // normal case
+      durationInMicroseconds = track->defaultDuration/1000;
+      if (track->haveSubframes()) {
+	// If this is a 'subframe', use a duration of 0 instead (unless it's the last 'subframe'):
+	if (fCurOffsetWithinFrame + frameSize + track->subframeSizeSize < fFrameSizesWithinBlock[fNextFrameNumberToDeliver]) {
+	  // There's room for at least one more subframe after this, so give this subframe a duration of 0
+	  durationInMicroseconds = 0;
+	}
+      }
+    }
+
+    if (track->defaultDuration == 0) {
+      // Adjust the frame duration to keep the sum of frame durations aligned with presentation times.
+      if (demuxedTrack->prevPresentationTime().tv_sec != 0) { // not the first time for this track
+	demuxedTrack->durationImbalance()
+	  += (presentationTime.tv_sec - demuxedTrack->prevPresentationTime().tv_sec)*1000000
+	  + (presentationTime.tv_usec - demuxedTrack->prevPresentationTime().tv_usec);
+      }
+      int adjustment = 0;
+      if (demuxedTrack->durationImbalance() > 0) {
+	// The duration needs to be increased.
+	int const adjustmentThreshold = 100000; // don't increase the duration by more than this amount (in case there's a mistake)
+	adjustment = demuxedTrack->durationImbalance() > adjustmentThreshold
+	  ? adjustmentThreshold : demuxedTrack->durationImbalance();
+      } else if (demuxedTrack->durationImbalance() < 0) {
+	// The duration needs to be decreased.
+	adjustment = (unsigned)(-demuxedTrack->durationImbalance()) < durationInMicroseconds
+	  ? demuxedTrack->durationImbalance() : -(int)durationInMicroseconds;
+      }
+      durationInMicroseconds += adjustment;
+      demuxedTrack->durationImbalance() -= durationInMicroseconds; // for next time
+      demuxedTrack->prevPresentationTime() = presentationTime; // for next time
+    }
+
+    demuxedTrack->presentationTime() = presentationTime;
+    demuxedTrack->durationInMicroseconds() = durationInMicroseconds;
+
+    // Deliver the next block now:
+    if (frameSize > demuxedTrack->maxSize()) {
+      demuxedTrack->numTruncatedBytes() = frameSize - demuxedTrack->maxSize();
+      demuxedTrack->frameSize() = demuxedTrack->maxSize();
+    } else { // normal case
+      demuxedTrack->numTruncatedBytes() = 0;
+      demuxedTrack->frameSize() = frameSize;
+    }
+    getCommonFrameBytes(track, demuxedTrack->to(), demuxedTrack->frameSize(), demuxedTrack->numTruncatedBytes());
+
+    // Next, deliver (and/or skip) bytes from the input file:
+    if (specialFrameSource != NULL) {
+      memmove(demuxedTrack->to(), specialFrameSource, demuxedTrack->frameSize());
+#ifdef DEBUG
+      fprintf(stderr, "\tdelivered special frame: %d bytes", demuxedTrack->frameSize());
+      if (demuxedTrack->numTruncatedBytes() > 0) fprintf(stderr, " (%d bytes truncated)", demuxedTrack->numTruncatedBytes());
+      fprintf(stderr, " @%u.%06u (%.06f from start); duration %u us\n", demuxedTrack->presentationTime().tv_sec, demuxedTrack->presentationTime().tv_usec, demuxedTrack->presentationTime().tv_sec+demuxedTrack->presentationTime().tv_usec/1000000.0-fPresentationTimeOffset, demuxedTrack->durationInMicroseconds());
+#endif
+      setParseState();
+      FramedSource::afterGetting(demuxedTrack); // completes delivery
+    } else { // normal case
+      fCurrentParseState = DELIVERING_FRAME_BYTES;
+      setParseState();
+    }
+    return True;
+  } while (0);
+
+  // An error occurred.  Try to recover:
+#ifdef DEBUG
+  fprintf(stderr, "deliverFrameWithinBlock(): Error parsing data; trying to recover...\n");
+#endif
+  fCurrentParseState = LOOKING_FOR_BLOCK;
+  return True;
+}
+
+void MatroskaFileParser::deliverFrameBytes() {
+  do {
+    MatroskaTrack* track = fOurFile.lookup(fBlockTrackNumber);
+    if (track == NULL) break; // shouldn't happen
+
+    MatroskaDemuxedTrack* demuxedTrack = fOurDemux->lookupDemuxedTrack(fBlockTrackNumber);
+    if (demuxedTrack == NULL) break; // shouldn't happen
+
+    unsigned const BANK_SIZE = bankSize();
+    while (fCurFrameNumBytesToGet > 0) {
+      // Hack: We can get no more than BANK_SIZE bytes at a time:
+      unsigned numBytesToGet = fCurFrameNumBytesToGet > BANK_SIZE ? BANK_SIZE : fCurFrameNumBytesToGet;
+      getBytes(fCurFrameTo, numBytesToGet);
+      fCurFrameTo += numBytesToGet;
+      fCurFrameNumBytesToGet -= numBytesToGet;
+      fCurOffsetWithinFrame += numBytesToGet;
+      setParseState();
+    }
+    while (fCurFrameNumBytesToSkip > 0) {
+      // Hack: We can skip no more than BANK_SIZE bytes at a time:
+      unsigned numBytesToSkip = fCurFrameNumBytesToSkip > BANK_SIZE ? BANK_SIZE : fCurFrameNumBytesToSkip;
+      skipBytes(numBytesToSkip);
+      fCurFrameNumBytesToSkip -= numBytesToSkip;
+      fCurOffsetWithinFrame += numBytesToSkip;
+      setParseState();
+    }
+#ifdef DEBUG
+    fprintf(stderr, "\tdelivered frame #%d: %d bytes", fNextFrameNumberToDeliver, demuxedTrack->frameSize());
+    if (track->haveSubframes()) fprintf(stderr, "[offset %d]", fCurOffsetWithinFrame - track->subframeSizeSize - demuxedTrack->frameSize() - demuxedTrack->numTruncatedBytes());
+    if (demuxedTrack->numTruncatedBytes() > 0) fprintf(stderr, " (%d bytes truncated)", demuxedTrack->numTruncatedBytes());
+    fprintf(stderr, " @%u.%06u (%.06f from start); duration %u us\n", demuxedTrack->presentationTime().tv_sec, demuxedTrack->presentationTime().tv_usec, demuxedTrack->presentationTime().tv_sec+demuxedTrack->presentationTime().tv_usec/1000000.0-fPresentationTimeOffset, demuxedTrack->durationInMicroseconds());
+#endif
+
+    if (!track->haveSubframes()
+	|| fCurOffsetWithinFrame + track->subframeSizeSize >= fFrameSizesWithinBlock[fNextFrameNumberToDeliver]) {
+      // Either we don't have subframes, or there's no more room for another subframe => We're completely done with this frame now:
+      ++fNextFrameNumberToDeliver;
+      fCurOffsetWithinFrame = 0;
+    }
+    if (fNextFrameNumberToDeliver == fNumFramesInBlock) {
+      // We've delivered all of the frames from this block.  Look for another block next:
+      fCurrentParseState = LOOKING_FOR_BLOCK;
+    } else {
+      fCurrentParseState = DELIVERING_FRAME_WITHIN_BLOCK;
+    }
+
+    setParseState();
+    FramedSource::afterGetting(demuxedTrack); // completes delivery
+    return;
+  } while (0);
+
+  // An error occurred.  Try to recover:
+#ifdef DEBUG
+  fprintf(stderr, "deliverFrameBytes(): Error parsing data; trying to recover...\n");
+#endif
+  fCurrentParseState = LOOKING_FOR_BLOCK;
+}
+
+void MatroskaFileParser
+::getCommonFrameBytes(MatroskaTrack* track, u_int8_t* to, unsigned numBytesToGet, unsigned numBytesToSkip) {
+  if (track->headerStrippedBytesSize > fCurOffsetWithinFrame) {
+    // We have some common 'header stripped' bytes that remain to be prepended to the frame.  Use these first:
+    unsigned numRemainingHeaderStrippedBytes = track->headerStrippedBytesSize - fCurOffsetWithinFrame;
+    unsigned numHeaderStrippedBytesToGet;
+    if (numBytesToGet <= numRemainingHeaderStrippedBytes) {
+      numHeaderStrippedBytesToGet = numBytesToGet;
+      numBytesToGet = 0;
+      if (numBytesToGet + numBytesToSkip <= numRemainingHeaderStrippedBytes) {
+	numBytesToSkip = 0;
+      } else {
+	numBytesToSkip = numBytesToGet + numBytesToSkip - numRemainingHeaderStrippedBytes;
+      }
+    } else {
+      numHeaderStrippedBytesToGet = numRemainingHeaderStrippedBytes;
+      numBytesToGet = numBytesToGet - numRemainingHeaderStrippedBytes;
+    }
+
+    if (numHeaderStrippedBytesToGet > 0) {
+      memmove(to, &track->headerStrippedBytes[fCurOffsetWithinFrame], numHeaderStrippedBytesToGet);
+      to += numHeaderStrippedBytesToGet;
+      fCurOffsetWithinFrame += numHeaderStrippedBytesToGet;
+    }
+  }
+
+  fCurFrameTo = to;
+  fCurFrameNumBytesToGet = numBytesToGet;
+  fCurFrameNumBytesToSkip = numBytesToSkip;
+}
+
+Boolean MatroskaFileParser::parseEBMLNumber(EBMLNumber& num) {
+  unsigned i;
+  u_int8_t bitmask = 0x80;
+  for (i = 0; i < EBML_NUMBER_MAX_LEN; ++i) {
+    while (1) {
+      if (fLimitOffsetInFile > 0 && fCurOffsetInFile > fLimitOffsetInFile) return False; // We've hit our pre-set limit
+      num.data[i] = get1Byte();
+      ++fCurOffsetInFile;
+
+      // If we're looking for an id, skip any leading bytes that don't contain a '1' in the first 4 bits:
+      if (i == 0/*we're a leading byte*/ && !num.stripLeading1/*we're looking for an id*/ && (num.data[i]&0xF0) == 0) {
+	setParseState(); // ensures that we make forward progress if the parsing gets interrupted
+	continue;
+      }
+      break;
+    }
+    if ((num.data[0]&bitmask) != 0) {
+      // num[i] is the last byte of the id
+      if (num.stripLeading1) num.data[0] &=~ bitmask;
+      break;
+    }
+    bitmask >>= 1;
+  }
+  if (i == EBML_NUMBER_MAX_LEN) return False;
+
+  num.len = i+1;
+  return True;
+}
+
+Boolean MatroskaFileParser::parseEBMLIdAndSize(EBMLId& id, EBMLDataSize& size) {
+  return parseEBMLNumber(id) && parseEBMLNumber(size);
+}
+
+Boolean MatroskaFileParser::parseEBMLVal_unsigned64(EBMLDataSize& size, u_int64_t& result) {
+  u_int64_t sv = size.val();
+  if (sv > 8) return False; // size too large
+
+  result = 0; // initially
+  for (unsigned i = (unsigned)sv; i > 0; --i) {
+    if (fLimitOffsetInFile > 0 && fCurOffsetInFile > fLimitOffsetInFile) return False; // We've hit our pre-set limit
+
+    u_int8_t c = get1Byte();
+    ++fCurOffsetInFile;
+
+    result = result*256 + c;
+  }
+
+  return True;
+}
+
+Boolean MatroskaFileParser::parseEBMLVal_unsigned(EBMLDataSize& size, unsigned& result) {
+  if (size.val() > 4) return False; // size too large
+
+  u_int64_t result64;
+  if (!parseEBMLVal_unsigned64(size, result64)) return False;
+
+  result = (unsigned)result64;
+
+  return True;
+}
+
+Boolean MatroskaFileParser::parseEBMLVal_float(EBMLDataSize& size, float& result) {
+  if (size.val() == 4) {
+    // Normal case.  Read the value as if it were a 4-byte integer, then copy it to the 'float' result:
+    unsigned resultAsUnsigned;
+    if (!parseEBMLVal_unsigned(size, resultAsUnsigned)) return False;
+
+    if (sizeof result != sizeof resultAsUnsigned) return False;
+    memcpy(&result, &resultAsUnsigned, sizeof result);
+    return True;
+  } else if (size.val() == 8) {
+    // Read the value as if it were an 8-byte integer, then copy it to a 'double', the convert that to the 'float' result:
+    u_int64_t resultAsUnsigned64;
+    if (!parseEBMLVal_unsigned64(size, resultAsUnsigned64)) return False;
+
+    double resultDouble;
+    if (sizeof resultDouble != sizeof resultAsUnsigned64) return False;
+    memcpy(&resultDouble, &resultAsUnsigned64, sizeof resultDouble);
+
+    result = (float)resultDouble;
+    return True;
+  } else {
+    // Unworkable size
+    return False;
+  }
+}
+
+Boolean MatroskaFileParser::parseEBMLVal_string(EBMLDataSize& size, char*& result) {
+  unsigned resultLength = (unsigned)size.val();
+  result = new char[resultLength + 1]; // allow for the trailing '\0'
+  if (result == NULL) return False;
+
+  char* p = result;
+  unsigned i;
+  for (i = 0; i < resultLength; ++i) {
+    if (fLimitOffsetInFile > 0 && fCurOffsetInFile > fLimitOffsetInFile) break; // We've hit our pre-set limit
+
+    u_int8_t c = get1Byte();
+    ++fCurOffsetInFile;
+
+    *p++ = c;
+  }
+  if (i < resultLength) { // an error occurred
+    delete[] result;
+    result = NULL;
+    return False;
+  }
+  *p = '\0';
+
+  return True;
+}
+
+Boolean MatroskaFileParser::parseEBMLVal_binary(EBMLDataSize& size, u_int8_t*& result) {
+  unsigned resultLength = (unsigned)size.val();
+  result = new u_int8_t[resultLength];
+  if (result == NULL) return False;
+
+  u_int8_t* p = result;
+  unsigned i;
+  for (i = 0; i < resultLength; ++i) {
+    if (fLimitOffsetInFile > 0 && fCurOffsetInFile > fLimitOffsetInFile) break; // We've hit our pre-set limit
+
+    u_int8_t c = get1Byte();
+    ++fCurOffsetInFile;
+
+    *p++ = c;
+  }
+  if (i < resultLength) { // an error occurred
+    delete[] result;
+    result = NULL;
+    return False;
+  }
+
+  return True;
+}
+
+void MatroskaFileParser::skipHeader(EBMLDataSize const& size) {
+  u_int64_t sv = (unsigned)size.val();
+#ifdef DEBUG
+  fprintf(stderr, "\tskipping %llu bytes\n", sv);
+#endif
+
+  fNumHeaderBytesToSkip = sv;
+  skipRemainingHeaderBytes(False);
+}
+
+void MatroskaFileParser::skipRemainingHeaderBytes(Boolean isContinuation) {
+  if (fNumHeaderBytesToSkip == 0) return; // common case
+
+  // Hack: To avoid tripping into a parser 'internal error' if we try to skip an excessively large
+  // distance, break up the skipping into manageable chunks, to ensure forward progress:
+  unsigned const maxBytesToSkip = bankSize();
+  while (fNumHeaderBytesToSkip > 0) {
+    unsigned numBytesToSkipNow
+      = fNumHeaderBytesToSkip < maxBytesToSkip ? (unsigned)fNumHeaderBytesToSkip : maxBytesToSkip;
+    setParseState();
+    skipBytes(numBytesToSkipNow);
+#ifdef DEBUG
+    if (isContinuation || numBytesToSkipNow < fNumHeaderBytesToSkip) {
+      fprintf(stderr, "\t\t(skipped %u bytes; %llu bytes remaining)\n",
+	      numBytesToSkipNow, fNumHeaderBytesToSkip - numBytesToSkipNow);
+    }
+#endif
+    fCurOffsetInFile += numBytesToSkipNow;
+    fNumHeaderBytesToSkip -= numBytesToSkipNow;
+  }
+}
+      
+void MatroskaFileParser::setParseState() {
+  fSavedCurOffsetInFile = fCurOffsetInFile;
+  fSavedCurOffsetWithinFrame = fCurOffsetWithinFrame;
+  saveParserState();
+}
+
+void MatroskaFileParser::restoreSavedParserState() {
+  StreamParser::restoreSavedParserState();
+  fCurOffsetInFile = fSavedCurOffsetInFile;
+  fCurOffsetWithinFrame = fSavedCurOffsetWithinFrame;
+}
+
+void MatroskaFileParser::seekToFilePosition(u_int64_t offsetInFile) {
+  ByteStreamFileSource* fileSource = (ByteStreamFileSource*)fInputSource; // we know it's a "ByteStreamFileSource"
+  if (fileSource != NULL) {
+    fileSource->seekToByteAbsolute(offsetInFile);
+    resetStateAfterSeeking();
+  }
+}
+
+void MatroskaFileParser::seekToEndOfFile() {
+  ByteStreamFileSource* fileSource = (ByteStreamFileSource*)fInputSource; // we know it's a "ByteStreamFileSource"
+  if (fileSource != NULL) {
+    fileSource->seekToEnd();
+    resetStateAfterSeeking();
+  }
+}
+
+void MatroskaFileParser::resetStateAfterSeeking() {
+  // Because we're resuming parsing after seeking to a new position in the file, reset the parser state:
+  fCurOffsetInFile = fSavedCurOffsetInFile = 0;
+  fCurOffsetWithinFrame = fSavedCurOffsetWithinFrame = 0;
+  flushInput();
+}
diff --git a/liveMedia/MatroskaFileParser.hh b/liveMedia/MatroskaFileParser.hh
new file mode 100644
index 0000000..48fbf00
--- /dev/null
+++ b/liveMedia/MatroskaFileParser.hh
@@ -0,0 +1,134 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A parser for a Matroska file.
+// C++ header
+
+#ifndef _MATROSKA_FILE_PARSER_HH
+
+#ifndef _STREAM_PARSER_HH
+#include "StreamParser.hh"
+#endif
+#ifndef _MATROSKA_FILE_HH
+#include "MatroskaFile.hh"
+#endif
+#ifndef _EBML_NUMBER_HH
+#include "EBMLNumber.hh"
+#endif
+
+// An enum representing the current state of the parser:
+enum MatroskaParseState {
+  PARSING_START_OF_FILE,
+  LOOKING_FOR_TRACKS,
+  PARSING_TRACK,
+  PARSING_CUES,
+  LOOKING_FOR_CLUSTER,
+  LOOKING_FOR_BLOCK,
+  PARSING_BLOCK,
+  DELIVERING_FRAME_WITHIN_BLOCK,
+  DELIVERING_FRAME_BYTES
+};
+
+class MatroskaFileParser: public StreamParser {
+public:
+  MatroskaFileParser(MatroskaFile& ourFile, FramedSource* inputSource,
+		     FramedSource::onCloseFunc* onEndFunc, void* onEndClientData,
+		     MatroskaDemux* ourDemux = NULL);
+  virtual ~MatroskaFileParser();
+
+  void seekToTime(double& seekNPT);
+
+  // StreamParser 'client continue' function:
+  static void continueParsing(void* clientData, unsigned char* ptr, unsigned size, struct timeval presentationTime);
+  void continueParsing();
+
+private:
+  // Parsing functions:
+  Boolean parse();
+    // returns True iff we have finished parsing to the end of all 'Track' headers (on initialization)
+
+  Boolean parseStartOfFile();
+  void lookForNextTrack();
+  Boolean parseTrack();
+  Boolean parseCues();
+
+  void lookForNextBlock();
+  void parseBlock();
+  Boolean deliverFrameWithinBlock();
+  void deliverFrameBytes();
+
+  void getCommonFrameBytes(MatroskaTrack* track, u_int8_t* to, unsigned numBytesToGet, unsigned numBytesToSkip);
+
+  Boolean parseEBMLNumber(EBMLNumber& num);
+  Boolean parseEBMLIdAndSize(EBMLId& id, EBMLDataSize& size);
+  Boolean parseEBMLVal_unsigned64(EBMLDataSize& size, u_int64_t& result);
+  Boolean parseEBMLVal_unsigned(EBMLDataSize& size, unsigned& result);
+  Boolean parseEBMLVal_float(EBMLDataSize& size, float& result);
+  Boolean parseEBMLVal_string(EBMLDataSize& size, char*& result);
+    // Note: "result" is dynamically allocated; the caller must delete[] it later
+  Boolean parseEBMLVal_binary(EBMLDataSize& size, u_int8_t*& result);
+    // Note: "result" is dynamically allocated; the caller must delete[] it later
+  void skipHeader(EBMLDataSize const& size);
+  void skipRemainingHeaderBytes(Boolean isContinuation);
+
+  void setParseState();
+
+  void seekToFilePosition(u_int64_t offsetInFile);
+  void seekToEndOfFile();
+  void resetStateAfterSeeking(); // common code, called by both of the above
+
+private: // redefined virtual functions
+  virtual void restoreSavedParserState();
+
+private:
+  // General state for parsing:
+  MatroskaFile& fOurFile;
+  FramedSource* fInputSource;
+  FramedSource::onCloseFunc* fOnEndFunc;
+  void* fOnEndClientData;
+  MatroskaDemux* fOurDemux;
+  MatroskaParseState fCurrentParseState;
+  u_int64_t fCurOffsetInFile, fSavedCurOffsetInFile, fLimitOffsetInFile;
+
+  // For skipping over (possibly large) headers:
+  u_int64_t fNumHeaderBytesToSkip;
+
+  // For parsing 'Seek ID's:
+  EBMLId fLastSeekId;
+
+  // Parameters of the most recently-parsed 'Cluster':
+  unsigned fClusterTimecode;
+
+  // Parameters of the most recently-parsed 'Block':
+  unsigned fBlockSize;
+  unsigned fBlockTrackNumber;
+  short fBlockTimecode;
+  unsigned fNumFramesInBlock;
+  unsigned* fFrameSizesWithinBlock;
+
+  // Parameters of the most recently-parsed frame within a 'Block':
+  double fPresentationTimeOffset;
+  unsigned fNextFrameNumberToDeliver;
+  unsigned fCurOffsetWithinFrame, fSavedCurOffsetWithinFrame; // used if track->haveSubframes()
+
+  // Parameters of the (sub)frame that's currently being delivered:
+  u_int8_t* fCurFrameTo;
+  unsigned fCurFrameNumBytesToGet;
+  unsigned fCurFrameNumBytesToSkip;
+};
+
+#endif
diff --git a/liveMedia/MatroskaFileServerDemux.cpp b/liveMedia/MatroskaFileServerDemux.cpp
new file mode 100644
index 0000000..4153569
--- /dev/null
+++ b/liveMedia/MatroskaFileServerDemux.cpp
@@ -0,0 +1,121 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A server demultiplexor for a Matroska file
+// Implementation
+
+#include "MatroskaFileServerDemux.hh"
+#include "MP3AudioMatroskaFileServerMediaSubsession.hh"
+#include "MatroskaFileServerMediaSubsession.hh"
+
+void MatroskaFileServerDemux
+::createNew(UsageEnvironment& env, char const* fileName,
+	    onCreationFunc* onCreation, void* onCreationClientData,
+	    char const* preferredLanguage) {
+  (void)new MatroskaFileServerDemux(env, fileName,
+				    onCreation, onCreationClientData,
+				    preferredLanguage);
+}
+
+ServerMediaSubsession* MatroskaFileServerDemux::newServerMediaSubsession() {
+  unsigned dummyResultTrackNumber;
+  return newServerMediaSubsession(dummyResultTrackNumber);
+}
+
+ServerMediaSubsession* MatroskaFileServerDemux
+::newServerMediaSubsession(unsigned& resultTrackNumber) {
+  ServerMediaSubsession* result;
+  resultTrackNumber = 0;
+
+  for (result = NULL; result == NULL && fNextTrackTypeToCheck != MATROSKA_TRACK_TYPE_OTHER; fNextTrackTypeToCheck <<= 1) {
+    if (fNextTrackTypeToCheck == MATROSKA_TRACK_TYPE_VIDEO) resultTrackNumber = fOurMatroskaFile->chosenVideoTrackNumber();
+    else if (fNextTrackTypeToCheck == MATROSKA_TRACK_TYPE_AUDIO) resultTrackNumber = fOurMatroskaFile->chosenAudioTrackNumber();
+    else if (fNextTrackTypeToCheck == MATROSKA_TRACK_TYPE_SUBTITLE) resultTrackNumber = fOurMatroskaFile->chosenSubtitleTrackNumber();
+
+    result = newServerMediaSubsessionByTrackNumber(resultTrackNumber);
+  }
+
+  return result;
+}
+
+ServerMediaSubsession* MatroskaFileServerDemux
+::newServerMediaSubsessionByTrackNumber(unsigned trackNumber) {
+  MatroskaTrack* track = fOurMatroskaFile->lookup(trackNumber);
+  if (track == NULL) return NULL;
+
+  // Use the track's "codecID" string to figure out which "ServerMediaSubsession" subclass to use:
+  ServerMediaSubsession* result = NULL;
+  if (strcmp(track->mimeType, "audio/MPEG") == 0) {
+    result = MP3AudioMatroskaFileServerMediaSubsession::createNew(*this, track);
+  } else {
+    result = MatroskaFileServerMediaSubsession::createNew(*this, track);
+  }
+
+  if (result != NULL) {
+#ifdef DEBUG
+    fprintf(stderr, "Created 'ServerMediaSubsession' object for track #%d: %s (%s)\n", track->trackNumber, track->codecID, track->mimeType);
+#endif
+  }
+
+  return result;
+}
+
+FramedSource* MatroskaFileServerDemux::newDemuxedTrack(unsigned clientSessionId, unsigned trackNumber) {
+  MatroskaDemux* demuxToUse = NULL;
+
+  if (clientSessionId != 0 && clientSessionId == fLastClientSessionId) {
+    demuxToUse = fLastCreatedDemux; // use the same demultiplexor as before
+      // Note: This code relies upon the fact that the creation of streams for different
+      // client sessions do not overlap - so all demuxed tracks are created for one "MatroskaDemux" at a time.
+      // Also, the "clientSessionId != 0" test is a hack, because 'session 0' is special; its audio and video streams
+      // are created and destroyed one-at-a-time, rather than both streams being
+      // created, and then (later) both streams being destroyed (as is the case
+      // for other ('real') session ids).  Because of this, a separate demultiplexor is used for each 'session 0' track.
+  }
+
+  if (demuxToUse == NULL) demuxToUse = fOurMatroskaFile->newDemux();
+
+  fLastClientSessionId = clientSessionId;
+  fLastCreatedDemux = demuxToUse;
+
+  return demuxToUse->newDemuxedTrackByTrackNumber(trackNumber);
+}
+
+MatroskaFileServerDemux
+::MatroskaFileServerDemux(UsageEnvironment& env, char const* fileName,
+			  onCreationFunc* onCreation, void* onCreationClientData,
+			  char const* preferredLanguage)
+  : Medium(env),
+    fFileName(fileName), fOnCreation(onCreation), fOnCreationClientData(onCreationClientData),
+    fNextTrackTypeToCheck(0x1), fLastClientSessionId(0), fLastCreatedDemux(NULL) {
+  MatroskaFile::createNew(env, fileName, onMatroskaFileCreation, this, preferredLanguage);
+}
+
+MatroskaFileServerDemux::~MatroskaFileServerDemux() {
+  Medium::close(fOurMatroskaFile);
+}
+
+void MatroskaFileServerDemux::onMatroskaFileCreation(MatroskaFile* newFile, void* clientData) {
+  ((MatroskaFileServerDemux*)clientData)->onMatroskaFileCreation(newFile);
+}
+
+void MatroskaFileServerDemux::onMatroskaFileCreation(MatroskaFile* newFile) {
+  fOurMatroskaFile = newFile;
+
+  // Now, call our own creation notification function:
+  if (fOnCreation != NULL) (*fOnCreation)(this, fOnCreationClientData);
+}
diff --git a/liveMedia/MatroskaFileServerMediaSubsession.cpp b/liveMedia/MatroskaFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..b070336
--- /dev/null
+++ b/liveMedia/MatroskaFileServerMediaSubsession.cpp
@@ -0,0 +1,65 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a track within a Matroska file.
+// Implementation
+
+#include "MatroskaFileServerMediaSubsession.hh"
+#include "MatroskaDemuxedTrack.hh"
+#include "FramedFilter.hh"
+
+MatroskaFileServerMediaSubsession* MatroskaFileServerMediaSubsession
+::createNew(MatroskaFileServerDemux& demux, MatroskaTrack* track) {
+  return new MatroskaFileServerMediaSubsession(demux, track);
+}
+
+MatroskaFileServerMediaSubsession
+::MatroskaFileServerMediaSubsession(MatroskaFileServerDemux& demux, MatroskaTrack* track)
+  : FileServerMediaSubsession(demux.envir(), demux.fileName(), False),
+    fOurDemux(demux), fTrack(track), fNumFiltersInFrontOfTrack(0) {
+}
+
+MatroskaFileServerMediaSubsession::~MatroskaFileServerMediaSubsession() {
+}
+
+float MatroskaFileServerMediaSubsession::duration() const { return fOurDemux.fileDuration(); }
+
+void MatroskaFileServerMediaSubsession
+::seekStreamSource(FramedSource* inputSource, double& seekNPT, double /*streamDuration*/, u_int64_t& /*numBytes*/) {
+  for (unsigned i = 0; i < fNumFiltersInFrontOfTrack; ++i) {
+    // "inputSource" is a filter.  Go back to *its* source:
+    inputSource = ((FramedFilter*)inputSource)->inputSource();
+  }
+  ((MatroskaDemuxedTrack*)inputSource)->seekToTime(seekNPT);
+}
+
+FramedSource* MatroskaFileServerMediaSubsession
+::createNewStreamSource(unsigned clientSessionId, unsigned& estBitrate) {
+  FramedSource* baseSource = fOurDemux.newDemuxedTrack(clientSessionId, fTrack->trackNumber);
+  if (baseSource == NULL) return NULL;
+  
+  return fOurDemux.ourMatroskaFile()
+    ->createSourceForStreaming(baseSource, fTrack->trackNumber,
+			       estBitrate, fNumFiltersInFrontOfTrack);
+}
+
+RTPSink* MatroskaFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic, FramedSource* /*inputSource*/) {
+  return fOurDemux.ourMatroskaFile()
+    ->createRTPSinkForTrackNumber(fTrack->trackNumber, rtpGroupsock, rtpPayloadTypeIfDynamic);
+}
diff --git a/liveMedia/MatroskaFileServerMediaSubsession.hh b/liveMedia/MatroskaFileServerMediaSubsession.hh
new file mode 100644
index 0000000..7cbebae
--- /dev/null
+++ b/liveMedia/MatroskaFileServerMediaSubsession.hh
@@ -0,0 +1,55 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a track within a Matroska file.
+// C++ header
+
+#ifndef _MATROSKA_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _MATROSKA_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+#ifndef _MATROSKA_FILE_SERVER_DEMUX_HH
+#include "MatroskaFileServerDemux.hh"
+#endif
+
+class MatroskaFileServerMediaSubsession: public FileServerMediaSubsession {
+public:
+  static MatroskaFileServerMediaSubsession*
+  createNew(MatroskaFileServerDemux& demux, MatroskaTrack* track);
+
+protected:
+  MatroskaFileServerMediaSubsession(MatroskaFileServerDemux& demux, MatroskaTrack* track);
+      // called only by createNew(), or by subclass constructors
+  virtual ~MatroskaFileServerMediaSubsession();
+
+protected: // redefined virtual functions
+  virtual float duration() const;
+  virtual void seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes);
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic, FramedSource* inputSource);
+
+protected:
+  MatroskaFileServerDemux& fOurDemux;
+  MatroskaTrack* fTrack;
+  unsigned fNumFiltersInFrontOfTrack;
+};
+
+#endif
diff --git a/liveMedia/Media.cpp b/liveMedia/Media.cpp
new file mode 100644
index 0000000..7905bc1
--- /dev/null
+++ b/liveMedia/Media.cpp
@@ -0,0 +1,163 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Media
+// Implementation
+
+#include "Media.hh"
+#include "HashTable.hh"
+
+////////// Medium //////////
+
+Medium::Medium(UsageEnvironment& env)
+	: fEnviron(env), fNextTask(NULL) {
+  // First generate a name for the new medium:
+  MediaLookupTable::ourMedia(env)->generateNewName(fMediumName, mediumNameMaxLen);
+  env.setResultMsg(fMediumName);
+
+  // Then add it to our table:
+  MediaLookupTable::ourMedia(env)->addNew(this, fMediumName);
+}
+
+Medium::~Medium() {
+  // Remove any tasks that might be pending for us:
+  fEnviron.taskScheduler().unscheduleDelayedTask(fNextTask);
+}
+
+Boolean Medium::lookupByName(UsageEnvironment& env, char const* mediumName,
+				  Medium*& resultMedium) {
+  resultMedium = MediaLookupTable::ourMedia(env)->lookup(mediumName);
+  if (resultMedium == NULL) {
+    env.setResultMsg("Medium ", mediumName, " does not exist");
+    return False;
+  }
+
+  return True;
+}
+
+void Medium::close(UsageEnvironment& env, char const* name) {
+  MediaLookupTable::ourMedia(env)->remove(name);
+}
+
+void Medium::close(Medium* medium) {
+  if (medium == NULL) return;
+
+  close(medium->envir(), medium->name());
+}
+
+Boolean Medium::isSource() const {
+  return False; // default implementation
+}
+
+Boolean Medium::isSink() const {
+  return False; // default implementation
+}
+
+Boolean Medium::isRTCPInstance() const {
+  return False; // default implementation
+}
+
+Boolean Medium::isRTSPClient() const {
+  return False; // default implementation
+}
+
+Boolean Medium::isRTSPServer() const {
+  return False; // default implementation
+}
+
+Boolean Medium::isMediaSession() const {
+  return False; // default implementation
+}
+
+Boolean Medium::isServerMediaSession() const {
+  return False; // default implementation
+}
+
+
+////////// _Tables implementation //////////
+
+_Tables* _Tables::getOurTables(UsageEnvironment& env, Boolean createIfNotPresent) {
+  if (env.liveMediaPriv == NULL && createIfNotPresent) {
+    env.liveMediaPriv = new _Tables(env);
+  }
+  return (_Tables*)(env.liveMediaPriv);
+}
+
+void _Tables::reclaimIfPossible() {
+  if (mediaTable == NULL && socketTable == NULL) {
+    fEnv.liveMediaPriv = NULL;
+    delete this;
+  }
+}
+
+_Tables::_Tables(UsageEnvironment& env)
+  : mediaTable(NULL), socketTable(NULL), fEnv(env) {
+}
+
+_Tables::~_Tables() {
+}
+
+
+////////// MediaLookupTable implementation //////////
+
+MediaLookupTable* MediaLookupTable::ourMedia(UsageEnvironment& env) {
+  _Tables* ourTables = _Tables::getOurTables(env);
+  if (ourTables->mediaTable == NULL) {
+    // Create a new table to record the media that are to be created in
+    // this environment:
+    ourTables->mediaTable = new MediaLookupTable(env);
+  }
+  return ourTables->mediaTable;
+}
+
+Medium* MediaLookupTable::lookup(char const* name) const {
+  return (Medium*)(fTable->Lookup(name));
+}
+
+void MediaLookupTable::addNew(Medium* medium, char* mediumName) {
+  fTable->Add(mediumName, (void*)medium);
+}
+
+void MediaLookupTable::remove(char const* name) {
+  Medium* medium = lookup(name);
+  if (medium != NULL) {
+    fTable->Remove(name);
+    if (fTable->IsEmpty()) {
+      // We can also delete ourselves (to reclaim space):
+      _Tables* ourTables = _Tables::getOurTables(fEnv);
+      delete this;
+      ourTables->mediaTable = NULL;
+      ourTables->reclaimIfPossible();
+    }
+
+    delete medium;
+  }
+}
+
+void MediaLookupTable::generateNewName(char* mediumName,
+				       unsigned /*maxLen*/) {
+  // We should really use snprintf() here, but not all systems have it
+  sprintf(mediumName, "liveMedia%d", fNameGenerator++);
+}
+
+MediaLookupTable::MediaLookupTable(UsageEnvironment& env)
+  : fEnv(env), fTable(HashTable::create(STRING_HASH_KEYS)), fNameGenerator(0) {
+}
+
+MediaLookupTable::~MediaLookupTable() {
+  delete fTable;
+}
diff --git a/liveMedia/MediaSession.cpp b/liveMedia/MediaSession.cpp
new file mode 100644
index 0000000..5525c44
--- /dev/null
+++ b/liveMedia/MediaSession.cpp
@@ -0,0 +1,1495 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A data structure that represents a session that consists of
+// potentially multiple (audio and/or video) sub-sessions
+// Implementation
+
+#include "liveMedia.hh"
+#include "Locale.hh"
+#include "Base64.hh"
+#include "GroupsockHelper.hh"
+#include <ctype.h>
+
+////////// MediaSession //////////
+
+MediaSession* MediaSession::createNew(UsageEnvironment& env,
+				      char const* sdpDescription) {
+  MediaSession* newSession = new MediaSession(env);
+  if (newSession != NULL) {
+    if (!newSession->initializeWithSDP(sdpDescription)) {
+      delete newSession;
+      return NULL;
+    }
+  }
+
+  return newSession;
+}
+
+Boolean MediaSession::lookupByName(UsageEnvironment& env,
+				   char const* instanceName,
+				   MediaSession*& resultSession) {
+  resultSession = NULL; // unless we succeed
+
+  Medium* medium;
+  if (!Medium::lookupByName(env, instanceName, medium)) return False;
+
+  if (!medium->isMediaSession()) {
+    env.setResultMsg(instanceName, " is not a 'MediaSession' object");
+    return False;
+  }
+
+  resultSession = (MediaSession*)medium;
+  return True;
+}
+
+MediaSession::MediaSession(UsageEnvironment& env)
+  : Medium(env),
+    fSubsessionsHead(NULL), fSubsessionsTail(NULL),
+    fConnectionEndpointName(NULL),
+    fMaxPlayStartTime(0.0f), fMaxPlayEndTime(0.0f), fAbsStartTime(NULL), fAbsEndTime(NULL),
+    fScale(1.0f), fSpeed(1.0f),
+    fMediaSessionType(NULL), fSessionName(NULL), fSessionDescription(NULL), fControlPath(NULL),
+    fMIKEYState(NULL), fCrypto(NULL) {
+  fSourceFilterAddr.s_addr = 0;
+
+  // Get our host name, and use this for the RTCP CNAME:
+  const unsigned maxCNAMElen = 100;
+  char CNAME[maxCNAMElen+1];
+#ifndef CRIS
+  gethostname((char*)CNAME, maxCNAMElen);
+#else
+  // "gethostname()" isn't defined for this platform
+  sprintf(CNAME, "unknown host %d", (unsigned)(our_random()*0x7FFFFFFF));
+#endif
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  fCNAME = strDup(CNAME);
+}
+
+MediaSession::~MediaSession() {
+  delete fSubsessionsHead;
+  delete[] fCNAME;
+  delete[] fConnectionEndpointName;
+  delete[] fAbsStartTime; delete[] fAbsEndTime;
+  delete[] fMediaSessionType;
+  delete[] fSessionName;
+  delete[] fSessionDescription;
+  delete[] fControlPath;
+  delete fCrypto; delete fMIKEYState;
+}
+
+Boolean MediaSession::isMediaSession() const {
+  return True;
+}
+
+MediaSubsession* MediaSession::createNewMediaSubsession() {
+  // default implementation:
+  return new MediaSubsession(*this);
+}
+
+Boolean MediaSession::initializeWithSDP(char const* sdpDescription) {
+  if (sdpDescription == NULL) return False;
+
+  // Begin by processing all SDP lines until we see the first "m="
+  char const* sdpLine = sdpDescription;
+  char const* nextSDPLine;
+  while (1) {
+    if (!parseSDPLine(sdpLine, nextSDPLine)) return False;
+    //##### We should really check for the correct SDP version (v=0)
+    if (sdpLine[0] == 'm') break;
+    sdpLine = nextSDPLine;
+    if (sdpLine == NULL) break; // there are no m= lines at all
+
+    // Check for various special SDP lines that we understand:
+    if (parseSDPLine_s(sdpLine)) continue;
+    if (parseSDPLine_i(sdpLine)) continue;
+    if (parseSDPLine_c(sdpLine)) continue;
+    if (parseSDPAttribute_control(sdpLine)) continue;
+    if (parseSDPAttribute_range(sdpLine)) continue;
+    if (parseSDPAttribute_type(sdpLine)) continue;
+    if (parseSDPAttribute_source_filter(sdpLine)) continue;
+    if (parseSDPAttribute_key_mgmt(sdpLine)) continue;
+  }
+
+  while (sdpLine != NULL) {
+    // We have a "m=" line, representing a new sub-session:
+    MediaSubsession* subsession = createNewMediaSubsession();
+    if (subsession == NULL) {
+      envir().setResultMsg("Unable to create new MediaSubsession");
+      return False;
+    }
+
+    // Parse the line as "m=<medium_name> <client_portNum> <proto> <fmt>"
+    // or "m=<medium_name> <client_portNum>/<num_ports> <proto> <fmt>"
+    // (Should we be checking for >1 payload format number here?)#####
+    char* mediumName = strDupSize(sdpLine); // ensures we have enough space
+    char const* protocolName = NULL;
+    unsigned payloadFormat;
+    if ((sscanf(sdpLine, "m=%s %hu RTP/AVP %u",
+		mediumName, &subsession->fClientPortNum, &payloadFormat) == 3 ||
+	 sscanf(sdpLine, "m=%s %hu/%*u RTP/AVP %u",
+		mediumName, &subsession->fClientPortNum, &payloadFormat) == 3)
+	&& payloadFormat <= 127) {
+      protocolName = "RTP";
+    } else if ((sscanf(sdpLine, "m=%s %hu RTP/SAVP %u",
+		       mediumName, &subsession->fClientPortNum, &payloadFormat) == 3 ||
+		sscanf(sdpLine, "m=%s %hu/%*u RTP/SAVP %u",
+		       mediumName, &subsession->fClientPortNum, &payloadFormat) == 3)
+	       && payloadFormat <= 127) {
+      protocolName = "SRTP";
+    } else if ((sscanf(sdpLine, "m=%s %hu UDP %u",
+		       mediumName, &subsession->fClientPortNum, &payloadFormat) == 3 ||
+		sscanf(sdpLine, "m=%s %hu udp %u",
+		       mediumName, &subsession->fClientPortNum, &payloadFormat) == 3 ||
+		sscanf(sdpLine, "m=%s %hu RAW/RAW/UDP %u",
+		       mediumName, &subsession->fClientPortNum, &payloadFormat) == 3)
+	       && payloadFormat <= 127) {
+      // This is a RAW UDP source
+      protocolName = "UDP";
+    } else {
+      // This "m=" line is bad; output an error message saying so:
+      char* sdpLineStr;
+      if (nextSDPLine == NULL) {
+	sdpLineStr = (char*)sdpLine;
+      } else {
+	sdpLineStr = strDup(sdpLine);
+	sdpLineStr[nextSDPLine-sdpLine] = '\0';
+      }
+      envir() << "Bad SDP \"m=\" line: " <<  sdpLineStr << "\n";
+      if (sdpLineStr != (char*)sdpLine) delete[] sdpLineStr;
+
+      delete[] mediumName;
+      delete subsession;
+
+      // Skip the following SDP lines, up until the next "m=":
+      while (1) {
+	sdpLine = nextSDPLine;
+	if (sdpLine == NULL) break; // we've reached the end
+	if (!parseSDPLine(sdpLine, nextSDPLine)) return False;
+
+	if (sdpLine[0] == 'm') break; // we've reached the next subsession
+      }
+      continue;
+    }
+
+    // Insert this subsession at the end of the list:
+    if (fSubsessionsTail == NULL) {
+      fSubsessionsHead = fSubsessionsTail = subsession;
+    } else {
+      fSubsessionsTail->setNext(subsession);
+      fSubsessionsTail = subsession;
+    }
+
+    subsession->serverPortNum = subsession->fClientPortNum; // by default
+
+    char const* mStart = sdpLine;
+    subsession->fSavedSDPLines = strDup(mStart);
+
+    subsession->fMediumName = strDup(mediumName);
+    delete[] mediumName;
+    subsession->fProtocolName = strDup(protocolName);
+    subsession->fRTPPayloadFormat = payloadFormat;
+
+    // Process the following SDP lines, up until the next "m=":
+    while (1) {
+      sdpLine = nextSDPLine;
+      if (sdpLine == NULL) break; // we've reached the end
+      if (!parseSDPLine(sdpLine, nextSDPLine)) return False;
+
+      if (sdpLine[0] == 'm') break; // we've reached the next subsession
+
+      // Check for various special SDP lines that we understand:
+      if (subsession->parseSDPLine_c(sdpLine)) continue;
+      if (subsession->parseSDPLine_b(sdpLine)) continue;
+      if (subsession->parseSDPAttribute_rtpmap(sdpLine)) continue;
+      if (subsession->parseSDPAttribute_rtcpmux(sdpLine)) continue;
+      if (subsession->parseSDPAttribute_control(sdpLine)) continue;
+      if (subsession->parseSDPAttribute_range(sdpLine)) continue;
+      if (subsession->parseSDPAttribute_fmtp(sdpLine)) continue;
+      if (subsession->parseSDPAttribute_source_filter(sdpLine)) continue;
+      if (subsession->parseSDPAttribute_x_dimensions(sdpLine)) continue;
+      if (subsession->parseSDPAttribute_framerate(sdpLine)) continue;
+      if (subsession->parseSDPAttribute_key_mgmt(sdpLine)) continue;
+
+      // (Later, check for malformed lines, and other valid SDP lines#####)
+    }
+    if (sdpLine != NULL) subsession->fSavedSDPLines[sdpLine-mStart] = '\0';
+
+    // If we don't yet know the codec name, try looking it up from the
+    // list of static payload types:
+    if (subsession->fCodecName == NULL) {
+      subsession->fCodecName
+	= lookupPayloadFormat(subsession->fRTPPayloadFormat,
+			      subsession->fRTPTimestampFrequency,
+			      subsession->fNumChannels);
+      if (subsession->fCodecName == NULL) {
+	char typeStr[20];
+	sprintf(typeStr, "%d", subsession->fRTPPayloadFormat);
+	envir().setResultMsg("Unknown codec name for RTP payload type ",
+			     typeStr);
+	return False;
+      }
+    }
+
+    // If we don't yet know this subsession's RTP timestamp frequency
+    // (because it uses a dynamic payload type and the corresponding
+    // SDP "rtpmap" attribute erroneously didn't specify it),
+    // then guess it now:
+    if (subsession->fRTPTimestampFrequency == 0) {
+      subsession->fRTPTimestampFrequency
+	= guessRTPTimestampFrequency(subsession->fMediumName,
+				     subsession->fCodecName);
+    }
+  }
+
+  return True;
+}
+
+Boolean MediaSession::parseSDPLine(char const* inputLine,
+				   char const*& nextLine){
+  // Begin by finding the start of the next line (if any):
+  nextLine = NULL;
+  for (char const* ptr = inputLine; *ptr != '\0'; ++ptr) {
+    if (*ptr == '\r' || *ptr == '\n') {
+      // We found the end of the line
+      ++ptr;
+      while (*ptr == '\r' || *ptr == '\n') ++ptr;
+      nextLine = ptr;
+      if (nextLine[0] == '\0') nextLine = NULL; // special case for end
+      break;
+    }
+  }
+
+  // Then, check that this line is a SDP line of the form <char>=<etc>
+  // (However, we also accept blank lines in the input.)
+  if (inputLine[0] == '\r' || inputLine[0] == '\n') return True;
+  if (strlen(inputLine) < 2 || inputLine[1] != '='
+      || inputLine[0] < 'a' || inputLine[0] > 'z') {
+    envir().setResultMsg("Invalid SDP line: ", inputLine);
+    return False;
+  }
+
+  return True;
+}
+
+// Common code used to parse many string values within SDP lines:
+static Boolean parseStringValue(char const* sdpLine, char const* searchFormat, char*& result) {
+  Boolean parseSuccess = False;
+  char* buffer = strDupSize(sdpLine);
+
+  if (sscanf(sdpLine, searchFormat, buffer) == 1) {
+    delete[] result; result = strDup(buffer);
+    parseSuccess = True;
+  }
+  delete[] buffer;
+
+  return parseSuccess;
+}
+
+static Boolean parseTwoStringValues(char const* sdpLine, char const* searchFormat,
+				    char*& result1, char*& result2) {
+  Boolean parseSuccess = False;
+  size_t sdpLineSize = strlen(sdpLine) + 1;
+  char* buffer1 = new char[sdpLineSize];
+  char* buffer2 = new char[sdpLineSize];
+
+  if (sscanf(sdpLine, searchFormat, buffer1, buffer2) == 2) {
+    delete[] result1; result1 = strDup(buffer1);
+    delete[] result2; result2 = strDup(buffer2);
+    parseSuccess = True;
+  }
+  delete[] buffer1;
+  delete[] buffer2;
+
+  return parseSuccess;
+}
+
+static MIKEYState* parseSDPAttribute_key_mgmtToMIKEY(char const* sdpLine) {
+  char* keyMgmtPrtclId = NULL;
+  char* keyMgmtData = NULL;
+  MIKEYState* resultMIKEYState = NULL;
+
+  do {
+    // Check for a "a=key-mgmt:<prtcl-id> <keymgmt-data>" line:
+    if (!parseTwoStringValues(sdpLine, "a=key-mgmt:%s %s", keyMgmtPrtclId, keyMgmtData)) break;
+
+    // We understand only the 'protocol id' "mikey":
+    if (strcmp(keyMgmtPrtclId, "mikey") != 0) break;
+
+    // Base64-decode the "keyMgmtData" string:
+    unsigned keyMgmtData_decodedSize;
+    u_int8_t* keyMgmtData_decoded = base64Decode(keyMgmtData, keyMgmtData_decodedSize);
+    if (keyMgmtData_decoded == NULL) break;
+
+    resultMIKEYState = MIKEYState::createNew(keyMgmtData_decoded, keyMgmtData_decodedSize);
+  } while (0);
+
+  delete[] keyMgmtPrtclId;
+  delete[] keyMgmtData;
+  return resultMIKEYState;
+}
+
+Boolean MediaSession::parseSDPLine_s(char const* sdpLine) {
+  // Check for "s=<session name>" line
+  return parseStringValue(sdpLine, "s=%[^\r\n]", fSessionName);
+}
+
+Boolean MediaSession::parseSDPLine_i(char const* sdpLine) {
+  // Check for "i=<session description>" line
+  return parseStringValue(sdpLine, "i=%[^\r\n]", fSessionDescription);
+}
+
+Boolean MediaSession::parseSDPLine_c(char const* sdpLine) {
+  // Check for "c=IN IP4 <connection-endpoint>"
+  // or "c=IN IP4 <connection-endpoint>/<ttl+numAddresses>"
+  // (Later, do something with <ttl+numAddresses> also #####)
+  return parseStringValue(sdpLine, "c=IN IP4 %[^/\r\n]", fConnectionEndpointName);
+}
+
+Boolean MediaSession::parseSDPAttribute_type(char const* sdpLine) {
+  // Check for a "a=type:broadcast|meeting|moderated|test|H.332|recvonly" line:
+  return parseStringValue(sdpLine, "a=type: %[^ ]", fMediaSessionType);
+}
+
+Boolean MediaSession::parseSDPAttribute_control(char const* sdpLine) {
+  // Check for a "a=control:<control-path>" line:
+  return parseStringValue(sdpLine, "a=control: %s", fControlPath);
+}
+
+static Boolean parseRangeAttribute(char const* sdpLine, double& startTime, double& endTime) {
+  return sscanf(sdpLine, "a=range: npt = %lg - %lg", &startTime, &endTime) == 2;
+}
+
+static Boolean parseRangeAttribute(char const* sdpLine, char*& absStartTime, char*& absEndTime) {
+  size_t len = strlen(sdpLine) + 1;
+  char* as = new char[len];
+  char* ae = new char[len];
+  int sscanfResult = sscanf(sdpLine, "a=range: clock = %[^-\r\n]-%[^\r\n]", as, ae);
+  if (sscanfResult == 2) {
+    absStartTime = as;
+    absEndTime = ae;
+  } else if (sscanfResult == 1) {
+    absStartTime = as;
+    delete[] ae;
+  } else {
+    delete[] as; delete[] ae;
+    return False;
+  }
+
+  return True;
+}
+
+Boolean MediaSession::parseSDPAttribute_range(char const* sdpLine) {
+  // Check for a "a=range:npt=<startTime>-<endTime>" line:
+  // (Later handle other kinds of "a=range" attributes also???#####)
+  Boolean parseSuccess = False;
+
+  double playStartTime;
+  double playEndTime;
+  if (parseRangeAttribute(sdpLine, playStartTime, playEndTime)) {
+    parseSuccess = True;
+    if (playStartTime > fMaxPlayStartTime) {
+      fMaxPlayStartTime = playStartTime;
+    }
+    if (playEndTime > fMaxPlayEndTime) {
+      fMaxPlayEndTime = playEndTime;
+    }
+  } else if (parseRangeAttribute(sdpLine, _absStartTime(), _absEndTime())) {
+    parseSuccess = True;
+  }
+
+  return parseSuccess;
+}
+
+static Boolean parseSourceFilterAttribute(char const* sdpLine,
+					  struct in_addr& sourceAddr) {
+  // Check for a "a=source-filter:incl IN IP4 <something> <source>" line.
+  // Note: At present, we don't check that <something> really matches
+  // one of our multicast addresses.  We also don't support more than
+  // one <source> #####
+  Boolean result = False; // until we succeed
+  char* sourceName = NULL;
+  do {
+    if (!parseStringValue(sdpLine, "a=source-filter: incl IN IP4 %*s %s", sourceName)) break;
+
+    // Now, convert this name to an address, if we can:
+    NetAddressList addresses(sourceName);
+    if (addresses.numAddresses() == 0) break;
+
+    netAddressBits sourceAddrBits
+      = *(netAddressBits*)(addresses.firstAddress()->data());
+    if (sourceAddrBits == 0) break;
+
+    sourceAddr.s_addr = sourceAddrBits;
+    result = True;
+  } while (0);
+
+  delete[] sourceName;
+  return result;
+}
+
+Boolean MediaSession
+::parseSDPAttribute_source_filter(char const* sdpLine) {
+  return parseSourceFilterAttribute(sdpLine, fSourceFilterAddr);
+}
+
+Boolean MediaSession::parseSDPAttribute_key_mgmt(char const* sdpLine) {
+  MIKEYState* newMIKEYState = parseSDPAttribute_key_mgmtToMIKEY(sdpLine);
+  if (newMIKEYState == NULL) return False;
+
+  delete fCrypto; delete fMIKEYState;
+  fMIKEYState = newMIKEYState;
+  fCrypto = new SRTPCryptographicContext(*fMIKEYState);
+  
+  return True;
+}
+
+char* MediaSession::lookupPayloadFormat(unsigned char rtpPayloadType,
+					unsigned& freq, unsigned& nCh) {
+  // Look up the codec name and timestamp frequency for known (static)
+  // RTP payload formats.
+  char const* temp = NULL;
+  switch (rtpPayloadType) {
+  case 0: {temp = "PCMU"; freq = 8000; nCh = 1; break;}
+  case 2: {temp = "G726-32"; freq = 8000; nCh = 1; break;}
+  case 3: {temp = "GSM"; freq = 8000; nCh = 1; break;}
+  case 4: {temp = "G723"; freq = 8000; nCh = 1; break;}
+  case 5: {temp = "DVI4"; freq = 8000; nCh = 1; break;}
+  case 6: {temp = "DVI4"; freq = 16000; nCh = 1; break;}
+  case 7: {temp = "LPC"; freq = 8000; nCh = 1; break;}
+  case 8: {temp = "PCMA"; freq = 8000; nCh = 1; break;}
+  case 9: {temp = "G722"; freq = 8000; nCh = 1; break;}
+  case 10: {temp = "L16"; freq = 44100; nCh = 2; break;}
+  case 11: {temp = "L16"; freq = 44100; nCh = 1; break;}
+  case 12: {temp = "QCELP"; freq = 8000; nCh = 1; break;}
+  case 14: {temp = "MPA"; freq = 90000; nCh = 1; break;}
+    // 'number of channels' is actually encoded in the media stream
+  case 15: {temp = "G728"; freq = 8000; nCh = 1; break;}
+  case 16: {temp = "DVI4"; freq = 11025; nCh = 1; break;}
+  case 17: {temp = "DVI4"; freq = 22050; nCh = 1; break;}
+  case 18: {temp = "G729"; freq = 8000; nCh = 1; break;}
+  case 25: {temp = "CELB"; freq = 90000; nCh = 1; break;}
+  case 26: {temp = "JPEG"; freq = 90000; nCh = 1; break;}
+  case 28: {temp = "NV"; freq = 90000; nCh = 1; break;}
+  case 31: {temp = "H261"; freq = 90000; nCh = 1; break;}
+  case 32: {temp = "MPV"; freq = 90000; nCh = 1; break;}
+  case 33: {temp = "MP2T"; freq = 90000; nCh = 1; break;}
+  case 34: {temp = "H263"; freq = 90000; nCh = 1; break;}
+  };
+
+  return strDup(temp);
+}
+
+unsigned MediaSession::guessRTPTimestampFrequency(char const* mediumName,
+						  char const* codecName) {
+  // By default, we assume that audio sessions use a frequency of 8000,
+  // video sessions use a frequency of 90000,
+  // and text sessions use a frequency of 1000.
+  // Begin by checking for known exceptions to this rule
+  // (where the frequency is known unambiguously (e.g., not like "DVI4"))
+  if (strcmp(codecName, "L16") == 0) return 44100;
+  if (strcmp(codecName, "MPA") == 0
+      || strcmp(codecName, "MPA-ROBUST") == 0
+      || strcmp(codecName, "X-MP3-DRAFT-00") == 0) return 90000;
+
+  // Now, guess default values:
+  if (strcmp(mediumName, "video") == 0) return 90000;
+  else if (strcmp(mediumName, "text") == 0) return 1000;
+  return 8000; // for "audio", and any other medium
+}
+
+char* MediaSession::absStartTime() const {
+  if (fAbsStartTime != NULL) return fAbsStartTime;
+
+  // If a subsession has an 'absolute' start time, then use that:
+  MediaSubsessionIterator iter(*this);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    if (subsession->_absStartTime() != NULL) return subsession->_absStartTime();
+  }
+  return NULL;
+}
+
+char* MediaSession::absEndTime() const {
+  if (fAbsEndTime != NULL) return fAbsEndTime;
+
+  // If a subsession has an 'absolute' end time, then use that:
+  MediaSubsessionIterator iter(*this);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    if (subsession->_absEndTime() != NULL) return subsession->_absEndTime();
+  }
+  return NULL;
+}
+
+Boolean MediaSession
+::initiateByMediaType(char const* mimeType,
+		      MediaSubsession*& resultSubsession,
+		      int useSpecialRTPoffset) {
+  // Look through this session's subsessions for media that match "mimeType"
+  resultSubsession = NULL;
+  MediaSubsessionIterator iter(*this);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    Boolean wasAlreadyInitiated = subsession->readSource() != NULL;
+    if (!wasAlreadyInitiated) {
+      // Try to create a source for this subsession:
+      if (!subsession->initiate(useSpecialRTPoffset)) return False;
+    }
+
+    // Make sure the source's MIME type is one that we handle:
+    if (strcmp(subsession->readSource()->MIMEtype(), mimeType) != 0) {
+      if (!wasAlreadyInitiated) subsession->deInitiate();
+      continue;
+    }
+
+    resultSubsession = subsession;
+    break; // use this
+  }
+
+  if (resultSubsession == NULL) {
+    envir().setResultMsg("Session has no usable media subsession");
+    return False;
+  }
+
+  return True;
+}
+
+
+////////// MediaSubsessionIterator //////////
+
+MediaSubsessionIterator::MediaSubsessionIterator(MediaSession const& session)
+  : fOurSession(session) {
+  reset();
+}
+
+MediaSubsessionIterator::~MediaSubsessionIterator() {
+}
+
+MediaSubsession* MediaSubsessionIterator::next() {
+  MediaSubsession* result = fNextPtr;
+
+  if (fNextPtr != NULL) fNextPtr = fNextPtr->fNext;
+
+  return result;
+}
+
+void MediaSubsessionIterator::reset() {
+  fNextPtr = fOurSession.fSubsessionsHead;
+}
+
+
+////////// SDPAttribute definition //////////
+
+class SDPAttribute {
+public:
+  SDPAttribute(char const* strValue, Boolean valueIsHexadecimal);
+  virtual ~SDPAttribute();
+
+  char const* strValue() const { return fStrValue; }
+  char const* strValueToLower() const { return fStrValueToLower; }
+  int intValue() const { return fIntValue; }
+  Boolean valueIsHexadecimal() const { return fValueIsHexadecimal; }
+
+private:
+  char* fStrValue;
+  char* fStrValueToLower;
+  int fIntValue;
+  Boolean fValueIsHexadecimal;
+};
+
+
+////////// MediaSubsession //////////
+
+MediaSubsession::MediaSubsession(MediaSession& parent)
+  : serverPortNum(0), sink(NULL), miscPtr(NULL),
+    fParent(parent), fNext(NULL),
+    fConnectionEndpointName(NULL),
+    fClientPortNum(0), fRTPPayloadFormat(0xFF),
+    fSavedSDPLines(NULL), fMediumName(NULL), fCodecName(NULL), fProtocolName(NULL),
+    fRTPTimestampFrequency(0), fMultiplexRTCPWithRTP(False), fControlPath(NULL),
+    fMIKEYState(NULL), fCrypto(NULL),
+    fSourceFilterAddr(parent.sourceFilterAddr()), fBandwidth(0),
+    fPlayStartTime(0.0), fPlayEndTime(0.0), fAbsStartTime(NULL), fAbsEndTime(NULL),
+    fVideoWidth(0), fVideoHeight(0), fVideoFPS(0), fNumChannels(1), fScale(1.0f), fNPT_PTS_Offset(0.0f),
+    fAttributeTable(HashTable::create(STRING_HASH_KEYS)),
+    fRTPSocket(NULL), fRTCPSocket(NULL),
+    fRTPSource(NULL), fRTCPInstance(NULL), fReadSource(NULL),
+    fReceiveRawMP3ADUs(False), fReceiveRawJPEGFrames(False),
+    fSessionId(NULL) {
+  rtpInfo.seqNum = 0; rtpInfo.timestamp = 0; rtpInfo.infoIsNew = False;
+
+  // A few attributes have unusual default values.  Set these now:
+  setAttribute("profile-level-id", "0", True/*value is hexadecimal*/); // used with "video/H264"
+    // This won't work for MPEG-4 (unless the value is <10), because for MPEG-4, the value
+    // is assumed to be a decimal string, not a hexadecimal string.  NEED TO FIX #####
+  setAttribute("profile-id", "1"); // used with "video/H265"
+  setAttribute("level-id", "93"); // used with "video/H265"
+  setAttribute("interop-constraints", "B00000000000"); // used with "video/H265"
+  setAttribute("sampling", "RGB"); // used with "video/JPEG2000"
+}
+
+MediaSubsession::~MediaSubsession() {
+  deInitiate();
+
+  delete[] fConnectionEndpointName; delete[] fSavedSDPLines;
+  delete[] fMediumName; delete[] fCodecName; delete[] fProtocolName;
+  delete[] fControlPath;
+  delete fCrypto; delete fMIKEYState;
+  delete[] fAbsStartTime; delete[] fAbsEndTime;
+  delete[] fSessionId;
+
+  // Empty and delete our 'attributes table':
+  SDPAttribute* attr;
+  while ((attr = (SDPAttribute*)fAttributeTable->RemoveNext()) != NULL) {
+    delete attr;
+  }
+  delete fAttributeTable;
+
+  delete fNext;
+}
+
+void MediaSubsession::addFilter(FramedFilter* filter){
+  fReadSource = filter;
+}
+
+double MediaSubsession::playStartTime() const {
+  if (fPlayStartTime > 0) return fPlayStartTime;
+
+  return fParent.playStartTime();
+}
+
+double MediaSubsession::playEndTime() const {
+  if (fPlayEndTime > 0) return fPlayEndTime;
+
+  return fParent.playEndTime();
+}
+
+char* MediaSubsession::absStartTime() const {
+  if (fAbsStartTime != NULL) return fAbsStartTime;
+
+  return fParent.absStartTime();
+}
+
+char* MediaSubsession::absEndTime() const {
+  if (fAbsEndTime != NULL) return fAbsEndTime;
+
+  return fParent.absEndTime();
+}
+
+static Boolean const honorSDPPortChoice
+#ifdef IGNORE_UNICAST_SDP_PORTS
+= False;
+#else
+= True;
+#endif
+
+Boolean MediaSubsession::initiate(int useSpecialRTPoffset) {
+  if (fReadSource != NULL) return True; // has already been initiated
+
+  do {
+    if (fCodecName == NULL) {
+      env().setResultMsg("Codec is unspecified");
+      break;
+    }
+
+    // Create RTP and RTCP 'Groupsocks' on which to receive incoming data.
+    // (Groupsocks will work even for unicast addresses)
+    struct in_addr tempAddr;
+    tempAddr.s_addr = connectionEndpointAddress();
+        // This could get changed later, as a result of a RTSP "SETUP"
+
+    Boolean const useSRTP = strcmp(fProtocolName, "SRTP") == 0;
+    Boolean const protocolIsRTP = useSRTP || strcmp(fProtocolName, "RTP") == 0;
+
+    if (fClientPortNum != 0 && (honorSDPPortChoice || IsMulticastAddress(tempAddr.s_addr))) {
+      // The sockets' port numbers were specified for us.  Use these:
+      if (protocolIsRTP && !fMultiplexRTCPWithRTP) {
+	fClientPortNum = fClientPortNum&~1;
+	    // use an even-numbered port for RTP, and the next (odd-numbered) port for RTCP
+      }
+      if (isSSM()) {
+	fRTPSocket = new Groupsock(env(), tempAddr, fSourceFilterAddr, fClientPortNum);
+      } else {
+	fRTPSocket = new Groupsock(env(), tempAddr, fClientPortNum, 255);
+      }
+      if (fRTPSocket == NULL) {
+	env().setResultMsg("Failed to create RTP socket");
+	break;
+      }
+      
+      if (protocolIsRTP) {
+	if (fMultiplexRTCPWithRTP) {
+	  // Use the RTP 'groupsock' object for RTCP as well:
+	  fRTCPSocket = fRTPSocket;
+	} else {
+	  // Set our RTCP port to be the RTP port + 1:
+	  portNumBits const rtcpPortNum = fClientPortNum|1;
+	  if (isSSM()) {
+	    fRTCPSocket = new Groupsock(env(), tempAddr, fSourceFilterAddr, rtcpPortNum);
+	  } else {
+	    fRTCPSocket = new Groupsock(env(), tempAddr, rtcpPortNum, 255);
+	  }
+	}
+      }
+    } else {
+      // Port numbers were not specified in advance, so we use ephemeral port numbers.
+      // Create sockets until we get a port-number pair (even: RTP; even+1: RTCP).
+      // (However, if we're multiplexing RTCP with RTP, then we create only one socket,
+      // and the port number can be even or odd.)
+      // We need to make sure that we don't keep trying to use the same bad port numbers over
+      // and over again, so we store bad sockets in a table, and delete them all when we're done.
+      HashTable* socketHashTable = HashTable::create(ONE_WORD_HASH_KEYS);
+      if (socketHashTable == NULL) break;
+      Boolean success = False;
+      NoReuse dummy(env());
+          // ensures that our new ephemeral port number won't be one that's already in use
+
+      while (1) {
+	// Create a new socket:
+	if (isSSM()) {
+	  fRTPSocket = new Groupsock(env(), tempAddr, fSourceFilterAddr, 0);
+	} else {
+	  fRTPSocket = new Groupsock(env(), tempAddr, 0, 255);
+	}
+	if (fRTPSocket == NULL) {
+	  env().setResultMsg("MediaSession::initiate(): unable to create RTP and RTCP sockets");
+	  break;
+	}
+
+	// Get the client port number:
+	Port clientPort(0);
+	if (!getSourcePort(env(), fRTPSocket->socketNum(), clientPort)) {
+	  break;
+	}
+	fClientPortNum = ntohs(clientPort.num()); 
+
+	if (fMultiplexRTCPWithRTP) {
+	  // Use this RTP 'groupsock' object for RTCP as well:
+	  fRTCPSocket = fRTPSocket;
+	  success = True;
+	  break;
+	}	  
+
+	// To be usable for RTP, the client port number must be even:
+	if ((fClientPortNum&1) != 0) { // it's odd
+	  // Record this socket in our table, and keep trying:
+	  unsigned key = (unsigned)fClientPortNum;
+	  Groupsock* existing = (Groupsock*)socketHashTable->Add((char const*)key, fRTPSocket);
+	  delete existing; // in case it wasn't NULL
+	  continue;
+	}
+
+	// Make sure we can use the next (i.e., odd) port number, for RTCP:
+	portNumBits rtcpPortNum = fClientPortNum|1;
+	if (isSSM()) {
+	  fRTCPSocket = new Groupsock(env(), tempAddr, fSourceFilterAddr, rtcpPortNum);
+	} else {
+	  fRTCPSocket = new Groupsock(env(), tempAddr, rtcpPortNum, 255);
+	}
+	if (fRTCPSocket != NULL && fRTCPSocket->socketNum() >= 0) {
+	  // Success! Use these two sockets.
+	  success = True;
+	  break;
+	} else {
+	  // We couldn't create the RTCP socket (perhaps that port number's already in use elsewhere?).
+	  delete fRTCPSocket; fRTCPSocket = NULL;
+
+	  // Record the first socket in our table, and keep trying:
+	  unsigned key = (unsigned)fClientPortNum;
+	  Groupsock* existing = (Groupsock*)socketHashTable->Add((char const*)key, fRTPSocket);
+	  delete existing; // in case it wasn't NULL
+	  continue;
+	}
+      }
+
+      // Clean up the socket hash table (and contents):
+      Groupsock* oldGS;
+      while ((oldGS = (Groupsock*)socketHashTable->RemoveNext()) != NULL) {
+	delete oldGS;
+      }
+      delete socketHashTable;
+
+      if (!success) break; // a fatal error occurred trying to create the RTP and RTCP sockets; we can't continue
+    }
+
+    // Try to use a big receive buffer for RTP - at least 0.1 second of
+    // specified bandwidth and at least 50 KB
+    unsigned rtpBufSize = fBandwidth * 25 / 2; // 1 kbps * 0.1 s = 12.5 bytes
+    if (rtpBufSize < 50 * 1024)
+      rtpBufSize = 50 * 1024;
+    increaseReceiveBufferTo(env(), fRTPSocket->socketNum(), rtpBufSize);
+
+    if (isSSM() && fRTCPSocket != NULL) {
+      // Special case for RTCP SSM: Send RTCP packets back to the source via unicast:
+      fRTCPSocket->changeDestinationParameters(fSourceFilterAddr,0,~0);
+    }
+
+    // Create "fRTPSource" and "fReadSource":
+    if (!createSourceObjects(useSpecialRTPoffset)) break;
+
+    if (fReadSource == NULL) {
+      env().setResultMsg("Failed to create read source");
+      break;
+    }
+    
+    SRTPCryptographicContext* ourCrypto = NULL;
+    if (useSRTP) {
+      // For SRTP, we need key management.  If MIKEY (key management) state wasn't given
+      // to us in the SDP description, then create it now:
+      ourCrypto = getCrypto();
+      if (ourCrypto == NULL) { // then fMIKEYState is also NULL; create both
+	fMIKEYState = new MIKEYState();
+	ourCrypto = fCrypto = new SRTPCryptographicContext(*fMIKEYState);
+      }
+
+      if (fRTPSource != NULL) fRTPSource->setCrypto(ourCrypto);
+    }
+
+    // Finally, create our RTCP instance. (It starts running automatically)
+    if (fRTPSource != NULL && fRTCPSocket != NULL) {
+      // If bandwidth is specified, use it and add 5% for RTCP overhead.
+      // Otherwise make a guess at 500 kbps.
+      unsigned totSessionBandwidth
+	= fBandwidth ? fBandwidth + fBandwidth / 20 : 500;
+      fRTCPInstance = RTCPInstance::createNew(env(), fRTCPSocket,
+					      totSessionBandwidth,
+					      (unsigned char const*)
+					      fParent.CNAME(),
+					      NULL /* we're a client */,
+					      fRTPSource,
+					      False /* we're not a data transmitter */,
+					      ourCrypto);
+      if (fRTCPInstance == NULL) {
+	env().setResultMsg("Failed to create RTCP instance");
+	break;
+      }
+    }
+
+    return True;
+  } while (0);
+
+  deInitiate();
+  fClientPortNum = 0;
+  return False;
+}
+
+void MediaSubsession::deInitiate() {
+  Medium::close(fRTCPInstance); fRTCPInstance = NULL;
+
+  Medium::close(fReadSource); // this is assumed to also close fRTPSource
+  fReadSource = NULL; fRTPSource = NULL;
+
+  delete fRTPSocket;
+  if (fRTCPSocket != fRTPSocket) delete fRTCPSocket;
+  fRTPSocket = NULL; fRTCPSocket = NULL;
+}
+
+Boolean MediaSubsession::setClientPortNum(unsigned short portNum) {
+  if (fReadSource != NULL) {
+    env().setResultMsg("A read source has already been created");
+    return False;
+  }
+
+  fClientPortNum = portNum;
+  return True;
+}
+
+char const* MediaSubsession::attrVal_str(char const* attrName) const {
+  SDPAttribute* attr = (SDPAttribute*)(fAttributeTable->Lookup(attrName));
+  if (attr == NULL) return "";
+
+  return attr->strValue();
+}
+
+char const* MediaSubsession::attrVal_strToLower(char const* attrName) const {
+  SDPAttribute* attr = (SDPAttribute*)(fAttributeTable->Lookup(attrName));
+  if (attr == NULL) return "";
+
+  return attr->strValueToLower();
+}
+
+unsigned MediaSubsession::attrVal_int(char const* attrName) const {
+  SDPAttribute* attr = (SDPAttribute*)(fAttributeTable->Lookup(attrName));
+  if (attr == NULL) return 0;
+
+  return attr->intValue();
+}
+
+char const* MediaSubsession::fmtp_config() const {
+  char const* result = attrVal_str("config");
+  if (result[0] == '\0') result = attrVal_str("configuration");
+
+  return result;
+}
+
+netAddressBits MediaSubsession::connectionEndpointAddress() const {
+  do {
+    // Get the endpoint name from with us, or our parent session:
+    char const* endpointString = connectionEndpointName();
+    if (endpointString == NULL) {
+      endpointString = parentSession().connectionEndpointName();
+    }
+    if (endpointString == NULL) break;
+
+    // Now, convert this name to an address, if we can:
+    NetAddressList addresses(endpointString);
+    if (addresses.numAddresses() == 0) break;
+
+    return *(netAddressBits*)(addresses.firstAddress()->data());
+  } while (0);
+
+  // No address known:
+  return 0;
+}
+
+void MediaSubsession::setDestinations(netAddressBits defaultDestAddress) {
+  // Get the destination address from the connection endpoint name
+  // (This will be 0 if it's not known, in which case we use the default)
+  netAddressBits destAddress = connectionEndpointAddress();
+  if (destAddress == 0) destAddress = defaultDestAddress;
+  struct in_addr destAddr; destAddr.s_addr = destAddress;
+
+  // The destination TTL remains unchanged:
+  int destTTL = ~0; // means: don't change
+
+  if (fRTPSocket != NULL) {
+    Port destPort(serverPortNum);
+    fRTPSocket->changeDestinationParameters(destAddr, destPort, destTTL);
+  }
+  if (fRTCPSocket != NULL && !isSSM() && !fMultiplexRTCPWithRTP) {
+    // Note: For SSM sessions, the dest address for RTCP was already set.
+    Port destPort(serverPortNum+1);
+    fRTCPSocket->changeDestinationParameters(destAddr, destPort, destTTL);
+  }
+}
+
+void MediaSubsession::setSessionId(char const* sessionId) {
+  delete[] fSessionId;
+  fSessionId = strDup(sessionId);
+}
+
+double MediaSubsession::getNormalPlayTime(struct timeval const& presentationTime) {
+  if (rtpSource() == NULL || rtpSource()->timestampFrequency() == 0) return 0.0; // no RTP source, or bad freq!
+
+  // First, check whether our "RTPSource" object has already been synchronized using RTCP.
+  // If it hasn't, then - as a special case - we need to use the RTP timestamp to compute the NPT.
+  if (!rtpSource()->hasBeenSynchronizedUsingRTCP()) {
+    if (!rtpInfo.infoIsNew) return 0.0; // the "rtpInfo" structure has not been filled in
+    u_int32_t timestampOffset = rtpSource()->curPacketRTPTimestamp() - rtpInfo.timestamp;
+    double nptOffset = (timestampOffset/(double)(rtpSource()->timestampFrequency()))*scale();
+    double npt = playStartTime() + nptOffset;
+
+    return npt;
+  } else {
+    // Common case: We have been synchronized using RTCP.  This means that the "presentationTime" parameter
+    // will be accurate, and so we should use this to compute the NPT.
+    double ptsDouble = (double)(presentationTime.tv_sec + presentationTime.tv_usec/1000000.0);
+
+    if (rtpInfo.infoIsNew) {
+      // This is the first time we've been called with a synchronized presentation time since the "rtpInfo"
+      // structure was last filled in.  Use this "presentationTime" to compute "fNPT_PTS_Offset":
+      if (seqNumLT(rtpSource()->curPacketRTPSeqNum(), rtpInfo.seqNum)) return -0.1; // sanity check; ignore old packets
+      u_int32_t timestampOffset = rtpSource()->curPacketRTPTimestamp() - rtpInfo.timestamp;
+      double nptOffset = (timestampOffset/(double)(rtpSource()->timestampFrequency()))*scale();
+      double npt = playStartTime() + nptOffset;
+      fNPT_PTS_Offset = npt - ptsDouble*scale();
+      rtpInfo.infoIsNew = False; // for next time
+
+      return npt;
+    } else {
+      // Use the precomputed "fNPT_PTS_Offset" to compute the NPT from the PTS:
+      if (fNPT_PTS_Offset == 0.0) return 0.0; // error: The "rtpInfo" structure was apparently never filled in
+      return (double)(ptsDouble*scale() + fNPT_PTS_Offset);
+    }
+  }
+}
+
+void MediaSubsession
+::setAttribute(char const* name, char const* value, Boolean valueIsHexadecimal) {
+  // Replace any existing attribute record with this name (except that the 'valueIsHexadecimal'
+  // property will be inherited from it, if it exists).
+  SDPAttribute* oldAttr = (SDPAttribute*)fAttributeTable->Lookup(name);
+  if (oldAttr != NULL) {
+    valueIsHexadecimal = oldAttr->valueIsHexadecimal();
+    fAttributeTable->Remove(name);
+    delete oldAttr;
+  }
+
+  SDPAttribute* newAttr = new SDPAttribute(value, valueIsHexadecimal);
+  (void)fAttributeTable->Add(name, newAttr);
+}
+
+Boolean MediaSubsession::parseSDPLine_c(char const* sdpLine) {
+  // Check for "c=IN IP4 <connection-endpoint>"
+  // or "c=IN IP4 <connection-endpoint>/<ttl+numAddresses>"
+  // (Later, do something with <ttl+numAddresses> also #####)
+  return parseStringValue(sdpLine, "c=IN IP4 %[^/\r\n]", fConnectionEndpointName);
+}
+
+Boolean MediaSubsession::parseSDPLine_b(char const* sdpLine) {
+  // Check for "b=<bwtype>:<bandwidth>" line
+  // RTP applications are expected to use bwtype="AS"
+  return sscanf(sdpLine, "b=AS:%u", &fBandwidth) == 1;
+}
+
+Boolean MediaSubsession::parseSDPAttribute_rtpmap(char const* sdpLine) {
+  // Check for a "a=rtpmap:<fmt> <codec>/<freq>" line:
+  // (Also check without the "/<freq>"; RealNetworks omits this)
+  // Also check for a trailing "/<numChannels>".
+  Boolean parseSuccess = False;
+
+  unsigned rtpmapPayloadFormat;
+  char* codecName = strDupSize(sdpLine); // ensures we have enough space
+  unsigned rtpTimestampFrequency = 0;
+  unsigned numChannels = 1;
+  if (sscanf(sdpLine, "a=rtpmap: %u %[^/]/%u/%u",
+	     &rtpmapPayloadFormat, codecName, &rtpTimestampFrequency,
+	     &numChannels) == 4
+      || sscanf(sdpLine, "a=rtpmap: %u %[^/]/%u",
+	     &rtpmapPayloadFormat, codecName, &rtpTimestampFrequency) == 3
+      || sscanf(sdpLine, "a=rtpmap: %u %s",
+		&rtpmapPayloadFormat, codecName) == 2) {
+    parseSuccess = True;
+    if (rtpmapPayloadFormat == fRTPPayloadFormat) {
+      // This "rtpmap" matches our payload format, so set our
+      // codec name and timestamp frequency:
+      // (First, make sure the codec name is upper case)
+      {
+	Locale l("POSIX");
+	for (char* p = codecName; *p != '\0'; ++p) *p = toupper(*p);
+      }
+      delete[] fCodecName; fCodecName = strDup(codecName);
+      fRTPTimestampFrequency = rtpTimestampFrequency;
+      fNumChannels = numChannels;
+    }
+  }
+  delete[] codecName;
+
+  return parseSuccess;
+}
+
+Boolean MediaSubsession::parseSDPAttribute_rtcpmux(char const* sdpLine) {
+  if (strncmp(sdpLine, "a=rtcp-mux", 10) == 0) {
+    fMultiplexRTCPWithRTP = True;
+    return True;
+  }
+
+  return False;
+}
+
+Boolean MediaSubsession::parseSDPAttribute_control(char const* sdpLine) {
+  // Check for a "a=control:<control-path>" line:
+  return parseStringValue(sdpLine, "a=control: %s", fControlPath);
+}
+
+Boolean MediaSubsession::parseSDPAttribute_range(char const* sdpLine) {
+  // Check for a "a=range:npt=<startTime>-<endTime>" line:
+  // (Later handle other kinds of "a=range" attributes also???#####)
+  Boolean parseSuccess = False;
+
+  double playStartTime;
+  double playEndTime;
+  if (parseRangeAttribute(sdpLine, playStartTime, playEndTime)) {
+    parseSuccess = True;
+    if (playStartTime > fPlayStartTime) {
+      fPlayStartTime = playStartTime;
+      if (playStartTime > fParent.playStartTime()) {
+	fParent.playStartTime() = playStartTime;
+      }
+    }
+    if (playEndTime > fPlayEndTime) {
+      fPlayEndTime = playEndTime;
+      if (playEndTime > fParent.playEndTime()) {
+	fParent.playEndTime() = playEndTime;
+      }
+    }
+  } else if (parseRangeAttribute(sdpLine, _absStartTime(), _absEndTime())) {
+    parseSuccess = True;
+  }
+
+  return parseSuccess;
+}
+
+Boolean MediaSubsession::parseSDPAttribute_fmtp(char const* sdpLine) {
+  // Check for a "a=fmtp:" line:
+  // Later: Check that payload format number matches; #####
+  do {
+    if (strncmp(sdpLine, "a=fmtp:", 7) != 0) break; sdpLine += 7;
+    while (isdigit(*sdpLine)) ++sdpLine;
+
+    // The remaining "sdpLine" should be a sequence of
+    //     <name>=<value>;
+    // or
+    //     <name>;
+    // parameter assignments.  Look at each of these.
+    unsigned const sdpLineLen = strlen(sdpLine);
+    char* nameStr = new char[sdpLineLen+1];
+    char* valueStr = new char[sdpLineLen+1];
+
+    while (*sdpLine != '\0' && *sdpLine != '\r' && *sdpLine != '\n') {
+      int sscanfResult = sscanf(sdpLine, " %[^=; \t\r\n] = %[^; \t\r\n]", nameStr, valueStr);
+      if (sscanfResult >= 1) {
+	// <name> or <name>=<value>
+	// Convert <name> to lower-case, to ease comparison:
+	Locale l("POSIX");
+	for (char* c = nameStr; *c != '\0'; ++c) *c = tolower(*c);
+	
+	if (sscanfResult == 1) {
+	  // <name>
+	  setAttribute(nameStr);
+	} else {
+	  // <name>=<value>
+	  setAttribute(nameStr, valueStr);
+	}
+      }
+
+      // Move to the next parameter assignment string:
+      while (*sdpLine != '\0' && *sdpLine != '\r' && *sdpLine != '\n' && *sdpLine != ';') ++sdpLine;
+      while (*sdpLine == ';') ++sdpLine;
+    }
+    delete[] nameStr; delete[] valueStr;
+    return True;
+  } while (0);
+
+  return False;
+}
+
+Boolean MediaSubsession
+::parseSDPAttribute_source_filter(char const* sdpLine) {
+  return parseSourceFilterAttribute(sdpLine, fSourceFilterAddr);
+}
+
+Boolean MediaSubsession::parseSDPAttribute_x_dimensions(char const* sdpLine) {
+  // Check for a "a=x-dimensions:<width>,<height>" line:
+  Boolean parseSuccess = False;
+
+  int width, height;
+  if (sscanf(sdpLine, "a=x-dimensions:%d,%d", &width, &height) == 2) {
+    parseSuccess = True;
+    fVideoWidth = (unsigned short)width;
+    fVideoHeight = (unsigned short)height;
+  }
+
+  return parseSuccess;
+}
+
+Boolean MediaSubsession::parseSDPAttribute_framerate(char const* sdpLine) {
+  // Check for a "a=framerate: <fps>" or "a=x-framerate: <fps>" line:
+  Boolean parseSuccess = False;
+
+  float frate;
+  int rate;
+  if (sscanf(sdpLine, "a=framerate: %f", &frate) == 1 || sscanf(sdpLine, "a=framerate:%f", &frate) == 1) {
+    parseSuccess = True;
+    fVideoFPS = (unsigned)frate;
+  } else if (sscanf(sdpLine, "a=x-framerate: %d", &rate) == 1) {
+    parseSuccess = True;
+    fVideoFPS = (unsigned)rate;
+  }
+
+  return parseSuccess;
+}
+
+Boolean MediaSubsession::parseSDPAttribute_key_mgmt(char const* sdpLine) {
+  MIKEYState* newMIKEYState = parseSDPAttribute_key_mgmtToMIKEY(sdpLine);
+  if (newMIKEYState == NULL) return False;
+
+  delete fCrypto; delete fMIKEYState;
+  fMIKEYState = newMIKEYState;
+  fCrypto = new SRTPCryptographicContext(*fMIKEYState);
+  
+  return True;
+}
+
+Boolean MediaSubsession::createSourceObjects(int useSpecialRTPoffset) {
+  do {
+    // First, check "fProtocolName"
+    if (strcmp(fProtocolName, "UDP") == 0) {
+      // A UDP-packetized stream (*not* a RTP stream)
+      fReadSource = BasicUDPSource::createNew(env(), fRTPSocket);
+      fRTPSource = NULL; // Note!
+      
+      if (strcmp(fCodecName, "MP2T") == 0) { // MPEG-2 Transport Stream
+	fReadSource = MPEG2TransportStreamFramer::createNew(env(), fReadSource);
+	// this sets "durationInMicroseconds" correctly, based on the PCR values
+      }
+    } else {
+      // Check "fCodecName" against the set of codecs that we support,
+      // and create our RTP source accordingly
+      // (Later make this code more efficient, as this set grows #####)
+      // (Also, add more fmts that can be implemented by SimpleRTPSource#####)
+      Boolean createSimpleRTPSource = False; // by default; can be changed below
+      Boolean doNormalMBitRule = False; // default behavior if "createSimpleRTPSource" is True
+      if (strcmp(fCodecName, "QCELP") == 0) { // QCELP audio
+	fReadSource =
+	  QCELPAudioRTPSource::createNew(env(), fRTPSocket, fRTPSource,
+					 fRTPPayloadFormat,
+					 fRTPTimestampFrequency);
+	// Note that fReadSource will differ from fRTPSource in this case
+      } else if (strcmp(fCodecName, "AMR") == 0) { // AMR audio (narrowband)
+	fReadSource =
+	  AMRAudioRTPSource::createNew(env(), fRTPSocket, fRTPSource,
+				       fRTPPayloadFormat, False /*isWideband*/,
+				       fNumChannels, attrVal_bool("octet-align"),
+				       attrVal_unsigned("interleaving"),
+				       attrVal_bool("robust-sorting"),
+				       attrVal_bool("crc"));
+	// Note that fReadSource will differ from fRTPSource in this case
+      } else if (strcmp(fCodecName, "AMR-WB") == 0) { // AMR audio (wideband)
+	fReadSource =
+	  AMRAudioRTPSource::createNew(env(), fRTPSocket, fRTPSource,
+				       fRTPPayloadFormat, True /*isWideband*/,
+				       fNumChannels, attrVal_bool("octet-align"),
+				       attrVal_unsigned("interleaving"),
+				       attrVal_bool("robust-sorting"),
+				       attrVal_bool("crc"));
+	// Note that fReadSource will differ from fRTPSource in this case
+      } else if (strcmp(fCodecName, "MPA") == 0) { // MPEG-1 or 2 audio
+	fReadSource = fRTPSource
+	  = MPEG1or2AudioRTPSource::createNew(env(), fRTPSocket,
+					      fRTPPayloadFormat,
+					      fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "MPA-ROBUST") == 0) { // robust MP3 audio
+	fReadSource = fRTPSource
+	  = MP3ADURTPSource::createNew(env(), fRTPSocket, fRTPPayloadFormat,
+				       fRTPTimestampFrequency);
+	if (fRTPSource == NULL) break;
+	
+	if (!fReceiveRawMP3ADUs) {
+	  // Add a filter that deinterleaves the ADUs after depacketizing them:
+	  MP3ADUdeinterleaver* deinterleaver
+	    = MP3ADUdeinterleaver::createNew(env(), fRTPSource);
+	  if (deinterleaver == NULL) break;
+	
+	  // Add another filter that converts these ADUs to MP3 frames:
+	  fReadSource = MP3FromADUSource::createNew(env(), deinterleaver);
+	}
+      } else if (strcmp(fCodecName, "X-MP3-DRAFT-00") == 0) {
+	// a non-standard variant of "MPA-ROBUST" used by RealNetworks
+	// (one 'ADU'ized MP3 frame per packet; no headers)
+	fRTPSource
+	  = SimpleRTPSource::createNew(env(), fRTPSocket, fRTPPayloadFormat,
+				       fRTPTimestampFrequency,
+				       "audio/MPA-ROBUST" /*hack*/);
+	if (fRTPSource == NULL) break;
+	
+	// Add a filter that converts these ADUs to MP3 frames:
+	fReadSource = MP3FromADUSource::createNew(env(), fRTPSource,
+						  False /*no ADU header*/);
+       } else if (strcmp(fCodecName, "MP4A-LATM") == 0) { // MPEG-4 LATM audio
+	fReadSource = fRTPSource
+	  = MPEG4LATMAudioRTPSource::createNew(env(), fRTPSocket,
+					       fRTPPayloadFormat,
+					       fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "VORBIS") == 0) { // Vorbis audio
+	fReadSource = fRTPSource
+	  = VorbisAudioRTPSource::createNew(env(), fRTPSocket,
+					    fRTPPayloadFormat,
+					    fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "THEORA") == 0) { // Theora video
+	fReadSource = fRTPSource
+	  = TheoraVideoRTPSource::createNew(env(), fRTPSocket, fRTPPayloadFormat);
+      } else if (strcmp(fCodecName, "RAW") == 0) { // Uncompressed raw video (RFC 4175)
+	fReadSource = fRTPSource
+	  = RawVideoRTPSource::createNew(env(), fRTPSocket, fRTPPayloadFormat, fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "VP8") == 0) { // VP8 video
+	fReadSource = fRTPSource
+	  = VP8VideoRTPSource::createNew(env(), fRTPSocket,
+					 fRTPPayloadFormat,
+					 fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "VP9") == 0) { // VP9 video
+	fReadSource = fRTPSource
+	  = VP9VideoRTPSource::createNew(env(), fRTPSocket,
+					 fRTPPayloadFormat,
+					 fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "AC3") == 0 || strcmp(fCodecName, "EAC3") == 0) { // AC3 audio
+	fReadSource = fRTPSource
+	  = AC3AudioRTPSource::createNew(env(), fRTPSocket,
+					 fRTPPayloadFormat,
+					 fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "MP4V-ES") == 0) { // MPEG-4 Elementary Stream video
+	fReadSource = fRTPSource
+	  = MPEG4ESVideoRTPSource::createNew(env(), fRTPSocket,
+					     fRTPPayloadFormat,
+					     fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "MPEG4-GENERIC") == 0) {
+	fReadSource = fRTPSource
+	  = MPEG4GenericRTPSource::createNew(env(), fRTPSocket,
+					     fRTPPayloadFormat,
+					     fRTPTimestampFrequency,
+					     fMediumName, attrVal_strToLower("mode"),
+					     attrVal_unsigned("sizelength"),
+					     attrVal_unsigned("indexlength"),
+					     attrVal_unsigned("indexdeltalength"));
+      } else if (strcmp(fCodecName, "MPV") == 0) { // MPEG-1 or 2 video
+	fReadSource = fRTPSource
+	  = MPEG1or2VideoRTPSource::createNew(env(), fRTPSocket,
+					      fRTPPayloadFormat,
+					      fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "MP2T") == 0) { // MPEG-2 Transport Stream
+	fRTPSource = SimpleRTPSource::createNew(env(), fRTPSocket, fRTPPayloadFormat,
+						fRTPTimestampFrequency, "video/MP2T",
+						0, False);
+	fReadSource = MPEG2TransportStreamFramer::createNew(env(), fRTPSource);
+	// this sets "durationInMicroseconds" correctly, based on the PCR values
+      } else if (strcmp(fCodecName, "H261") == 0) { // H.261
+	fReadSource = fRTPSource
+	  = H261VideoRTPSource::createNew(env(), fRTPSocket,
+					  fRTPPayloadFormat,
+					  fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "H263-1998") == 0 ||
+		 strcmp(fCodecName, "H263-2000") == 0) { // H.263+
+	fReadSource = fRTPSource
+	  = H263plusVideoRTPSource::createNew(env(), fRTPSocket,
+					      fRTPPayloadFormat,
+					      fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "H264") == 0) {
+	fReadSource = fRTPSource
+	  = H264VideoRTPSource::createNew(env(), fRTPSocket,
+					  fRTPPayloadFormat,
+					  fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "H265") == 0) {
+	Boolean expectDONFields = attrVal_unsigned("sprop-depack-buf-nalus") > 0;
+	fReadSource = fRTPSource
+	  = H265VideoRTPSource::createNew(env(), fRTPSocket,
+					  fRTPPayloadFormat,
+					  expectDONFields,
+					  fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "DV") == 0) {
+	fReadSource = fRTPSource
+	  = DVVideoRTPSource::createNew(env(), fRTPSocket,
+					fRTPPayloadFormat,
+					fRTPTimestampFrequency);
+      } else if (strcmp(fCodecName, "JPEG") == 0) { // motion JPEG
+	if (fReceiveRawJPEGFrames) {
+	  // Special case (used when proxying JPEG/RTP streams): Receive each JPEG/RTP packet, including the special RTP headers:
+	  fReadSource = fRTPSource
+	    = SimpleRTPSource::createNew(env(), fRTPSocket, fRTPPayloadFormat,
+					 fRTPTimestampFrequency, "video/JPEG",
+					 0/*special offset*/, False/*doNormalMBitRule => ignore the 'M' bit*/);
+	} else {
+	  // Normal case: Receive each JPEG frame as a complete, displayable JPEG image:
+	  fReadSource = fRTPSource
+	    = JPEGVideoRTPSource::createNew(env(), fRTPSocket,
+					    fRTPPayloadFormat,
+					    fRTPTimestampFrequency,
+					    videoWidth(),
+					    videoHeight());
+	}
+      } else if (strcmp(fCodecName, "JPEG2000") == 0) { // JPEG 2000 video
+        fReadSource = fRTPSource
+          = JPEG2000VideoRTPSource::createNew(env(), fRTPSocket, fRTPPayloadFormat,
+					      fRTPTimestampFrequency,
+					      attrVal_str("sampling"));
+      } else if (strcmp(fCodecName, "X-QT") == 0
+		 || strcmp(fCodecName, "X-QUICKTIME") == 0) {
+	// Generic QuickTime streams, as defined in
+	// <http://developer.apple.com/quicktime/icefloe/dispatch026.html>
+	char* mimeType
+	  = new char[strlen(mediumName()) + strlen(codecName()) + 2] ;
+	sprintf(mimeType, "%s/%s", mediumName(), codecName());
+	fReadSource = fRTPSource
+	  = QuickTimeGenericRTPSource::createNew(env(), fRTPSocket,
+						 fRTPPayloadFormat,
+						 fRTPTimestampFrequency,
+						 mimeType);
+	delete[] mimeType;
+      } else if (  strcmp(fCodecName, "PCMU") == 0 // PCM u-law audio
+		   || strcmp(fCodecName, "GSM") == 0 // GSM audio
+		   || strcmp(fCodecName, "DVI4") == 0 // DVI4 (IMA ADPCM) audio
+		   || strcmp(fCodecName, "PCMA") == 0 // PCM a-law audio
+		   || strcmp(fCodecName, "MP1S") == 0 // MPEG-1 System Stream
+		   || strcmp(fCodecName, "MP2P") == 0 // MPEG-2 Program Stream
+		   || strcmp(fCodecName, "L8") == 0 // 8-bit linear audio
+		   || strcmp(fCodecName, "L16") == 0 // 16-bit linear audio
+		   || strcmp(fCodecName, "L20") == 0 // 20-bit linear audio (RFC 3190)
+		   || strcmp(fCodecName, "L24") == 0 // 24-bit linear audio (RFC 3190)
+		   || strcmp(fCodecName, "G722") == 0 // G.722 audio (RFC 3551)
+		   || strcmp(fCodecName, "G726-16") == 0 // G.726, 16 kbps
+		   || strcmp(fCodecName, "G726-24") == 0 // G.726, 24 kbps
+		   || strcmp(fCodecName, "G726-32") == 0 // G.726, 32 kbps
+		   || strcmp(fCodecName, "G726-40") == 0 // G.726, 40 kbps
+		   || strcmp(fCodecName, "SPEEX") == 0 // SPEEX audio
+		   || strcmp(fCodecName, "ILBC") == 0 // iLBC audio
+		   || strcmp(fCodecName, "OPUS") == 0 // Opus audio
+		   || strcmp(fCodecName, "T140") == 0 // T.140 text (RFC 4103)
+		   || strcmp(fCodecName, "DAT12") == 0 // 12-bit nonlinear audio (RFC 3190)
+		   || strcmp(fCodecName, "VND.ONVIF.METADATA") == 0 // 'ONVIF' 'metadata' (a XML document)
+		   ) {
+	createSimpleRTPSource = True;
+	useSpecialRTPoffset = 0;
+	if (strcmp(fCodecName, "VND.ONVIF.METADATA") == 0) {
+	  // This RTP payload format uses the RTP "M" bit to indicate the end of the content (a XML document):
+	  doNormalMBitRule = True;
+	}
+      } else if (useSpecialRTPoffset >= 0) {
+	// We don't know this RTP payload format, but try to receive
+	// it using a 'SimpleRTPSource' with the specified header offset:
+	createSimpleRTPSource = True;
+      } else {
+	env().setResultMsg("RTP payload format unknown or not supported");
+	break;
+      }
+      
+      if (createSimpleRTPSource) {
+	char* mimeType
+	  = new char[strlen(mediumName()) + strlen(codecName()) + 2] ;
+	sprintf(mimeType, "%s/%s", mediumName(), codecName());
+	fReadSource = fRTPSource
+	  = SimpleRTPSource::createNew(env(), fRTPSocket, fRTPPayloadFormat,
+				       fRTPTimestampFrequency, mimeType,
+				       (unsigned)useSpecialRTPoffset,
+				       doNormalMBitRule);
+	delete[] mimeType;
+      }
+    }
+
+    return True;
+  } while (0);
+
+  return False; // an error occurred
+}
+
+
+////////// SDPAttribute implementation //////////
+
+SDPAttribute::SDPAttribute(char const* strValue, Boolean valueIsHexadecimal)
+  : fStrValue(strDup(strValue)), fStrValueToLower(NULL), fValueIsHexadecimal(valueIsHexadecimal) {
+  if (fStrValue == NULL) {
+    // No value was given for this attribute, so consider it to be a Boolean, with value True:
+    fIntValue = 1;
+  } else {
+    // Create a 'tolower' version of "fStrValue", in case it's needed:
+    Locale l("POSIX");
+    size_t strSize;
+
+    fStrValueToLower = strDupSize(fStrValue, strSize);
+    for (unsigned i = 0; i < strSize-1; ++i) fStrValueToLower[i] = tolower(fStrValue[i]);
+    fStrValueToLower[strSize-1] = '\0';
+    
+    // Try to parse "fStrValueToLower" as an integer.  If we can't, assume an integer value of 0:
+    if (sscanf(fStrValueToLower, valueIsHexadecimal ? "%x" : "%d", &fIntValue) != 1) {
+      fIntValue = 0;
+    }
+  }
+}
+
+SDPAttribute::~SDPAttribute() {
+  delete[] fStrValue;
+  delete[] fStrValueToLower;
+}
diff --git a/liveMedia/MediaSink.cpp b/liveMedia/MediaSink.cpp
new file mode 100644
index 0000000..ab144ad
--- /dev/null
+++ b/liveMedia/MediaSink.cpp
@@ -0,0 +1,225 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Media Sinks
+// Implementation
+
+#include "MediaSink.hh"
+#include "GroupsockHelper.hh"
+#include <string.h>
+
+////////// MediaSink //////////
+
+MediaSink::MediaSink(UsageEnvironment& env)
+  : Medium(env), fSource(NULL) {
+}
+
+MediaSink::~MediaSink() {
+  stopPlaying();
+}
+
+Boolean MediaSink::isSink() const {
+  return True;
+}
+
+Boolean MediaSink::lookupByName(UsageEnvironment& env, char const* sinkName,
+				MediaSink*& resultSink) {
+  resultSink = NULL; // unless we succeed
+
+  Medium* medium;
+  if (!Medium::lookupByName(env, sinkName, medium)) return False;
+
+  if (!medium->isSink()) {
+    env.setResultMsg(sinkName, " is not a media sink");
+    return False;
+  }
+
+  resultSink = (MediaSink*)medium;
+  return True;
+}
+
+Boolean MediaSink::sourceIsCompatibleWithUs(MediaSource& source) {
+  // We currently support only framed sources.
+  return source.isFramedSource();
+}
+
+Boolean MediaSink::startPlaying(MediaSource& source,
+				afterPlayingFunc* afterFunc,
+				void* afterClientData) {
+  // Make sure we're not already being played:
+  if (fSource != NULL) {
+    envir().setResultMsg("This sink is already being played");
+    return False;
+  }
+
+  // Make sure our source is compatible:
+  if (!sourceIsCompatibleWithUs(source)) {
+    envir().setResultMsg("MediaSink::startPlaying(): source is not compatible!");
+    return False;
+  }
+  fSource = (FramedSource*)&source;
+
+  fAfterFunc = afterFunc;
+  fAfterClientData = afterClientData;
+  return continuePlaying();
+}
+
+void MediaSink::stopPlaying() {
+  // First, tell the source that we're no longer interested:
+  if (fSource != NULL) fSource->stopGettingFrames();
+
+  // Cancel any pending tasks:
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+
+  fSource = NULL; // indicates that we can be played again
+  fAfterFunc = NULL;
+}
+
+void MediaSink::onSourceClosure(void* clientData) {
+  MediaSink* sink = (MediaSink*)clientData;
+  sink->onSourceClosure();
+}
+
+void MediaSink::onSourceClosure() {
+  // Cancel any pending tasks:
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+
+  fSource = NULL; // indicates that we can be played again
+  if (fAfterFunc != NULL) {
+    (*fAfterFunc)(fAfterClientData);
+  }
+}
+
+Boolean MediaSink::isRTPSink() const {
+  return False; // default implementation
+}
+
+////////// OutPacketBuffer //////////
+
+unsigned OutPacketBuffer::maxSize = 60000; // by default
+
+OutPacketBuffer
+::OutPacketBuffer(unsigned preferredPacketSize, unsigned maxPacketSize, unsigned maxBufferSize)
+  : fPreferred(preferredPacketSize), fMax(maxPacketSize),
+    fOverflowDataSize(0) {
+  if (maxBufferSize == 0) maxBufferSize = maxSize;
+  unsigned maxNumPackets = (maxBufferSize + (maxPacketSize-1))/maxPacketSize;
+  fLimit = maxNumPackets*maxPacketSize;
+  fBuf = new unsigned char[fLimit];
+  resetPacketStart();
+  resetOffset();
+  resetOverflowData();
+}
+
+OutPacketBuffer::~OutPacketBuffer() {
+  delete[] fBuf;
+}
+
+void OutPacketBuffer::enqueue(unsigned char const* from, unsigned numBytes) {
+  if (numBytes > totalBytesAvailable()) {
+#ifdef DEBUG
+    fprintf(stderr, "OutPacketBuffer::enqueue() warning: %d > %d\n", numBytes, totalBytesAvailable());
+#endif
+    numBytes = totalBytesAvailable();
+  }
+
+  if (curPtr() != from) memmove(curPtr(), from, numBytes);
+  increment(numBytes);
+}
+
+void OutPacketBuffer::enqueueWord(u_int32_t word) {
+  u_int32_t nWord = htonl(word);
+  enqueue((unsigned char*)&nWord, 4);
+}
+
+void OutPacketBuffer::insert(unsigned char const* from, unsigned numBytes,
+			     unsigned toPosition) {
+  unsigned realToPosition = fPacketStart + toPosition;
+  if (realToPosition + numBytes > fLimit) {
+    if (realToPosition > fLimit) return; // we can't do this
+    numBytes = fLimit - realToPosition;
+  }
+
+  memmove(&fBuf[realToPosition], from, numBytes);
+  if (toPosition + numBytes > fCurOffset) {
+    fCurOffset = toPosition + numBytes;
+  }
+}
+
+void OutPacketBuffer::insertWord(u_int32_t word, unsigned toPosition) {
+  u_int32_t nWord = htonl(word);
+  insert((unsigned char*)&nWord, 4, toPosition);
+}
+
+void OutPacketBuffer::extract(unsigned char* to, unsigned numBytes,
+			      unsigned fromPosition) {
+  unsigned realFromPosition = fPacketStart + fromPosition;
+  if (realFromPosition + numBytes > fLimit) { // sanity check
+    if (realFromPosition > fLimit) return; // we can't do this
+    numBytes = fLimit - realFromPosition;
+  }
+
+  memmove(to, &fBuf[realFromPosition], numBytes);
+}
+
+u_int32_t OutPacketBuffer::extractWord(unsigned fromPosition) {
+  u_int32_t nWord;
+  extract((unsigned char*)&nWord, 4, fromPosition);
+  return ntohl(nWord);
+}
+
+void OutPacketBuffer::skipBytes(unsigned numBytes) {
+  if (numBytes > totalBytesAvailable()) {
+    numBytes = totalBytesAvailable();
+  }
+
+  increment(numBytes);
+}
+
+void OutPacketBuffer
+::setOverflowData(unsigned overflowDataOffset,
+		  unsigned overflowDataSize,
+		  struct timeval const& presentationTime,
+		  unsigned durationInMicroseconds) {
+  fOverflowDataOffset = overflowDataOffset;
+  fOverflowDataSize = overflowDataSize;
+  fOverflowPresentationTime = presentationTime;
+  fOverflowDurationInMicroseconds = durationInMicroseconds;
+}
+
+void OutPacketBuffer::useOverflowData() {
+  enqueue(&fBuf[fPacketStart + fOverflowDataOffset], fOverflowDataSize);
+  fCurOffset -= fOverflowDataSize; // undoes increment performed by "enqueue"
+  resetOverflowData();
+}
+
+void OutPacketBuffer::adjustPacketStart(unsigned numBytes) {
+  fPacketStart += numBytes;
+  if (fOverflowDataOffset >= numBytes) {
+    fOverflowDataOffset -= numBytes;
+  } else {
+    fOverflowDataOffset = 0;
+    fOverflowDataSize = 0; // an error otherwise
+  }
+}
+
+void OutPacketBuffer::resetPacketStart() {
+  if (fOverflowDataSize > 0) {
+    fOverflowDataOffset += fPacketStart;
+  }
+  fPacketStart = 0;
+}
diff --git a/liveMedia/MediaSource.cpp b/liveMedia/MediaSource.cpp
new file mode 100644
index 0000000..0bf5ee8
--- /dev/null
+++ b/liveMedia/MediaSource.cpp
@@ -0,0 +1,91 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Media Sources
+// Implementation
+
+#include "MediaSource.hh"
+
+////////// MediaSource //////////
+
+MediaSource::MediaSource(UsageEnvironment& env)
+	: Medium(env) {
+}
+
+MediaSource::~MediaSource() {
+}
+
+Boolean MediaSource::isSource() const {
+  return True;
+}
+
+char const* MediaSource::MIMEtype() const {
+  return "application/OCTET-STREAM"; // default type
+}
+
+Boolean MediaSource::isFramedSource() const {
+  return False; // default implementation
+}
+Boolean MediaSource::isRTPSource() const {
+  return False; // default implementation
+}
+Boolean MediaSource::isMPEG1or2VideoStreamFramer() const {
+  return False; // default implementation
+}
+Boolean MediaSource::isMPEG4VideoStreamFramer() const {
+  return False; // default implementation
+}
+Boolean MediaSource::isH264VideoStreamFramer() const {
+  return False; // default implementation
+}
+Boolean MediaSource::isH265VideoStreamFramer() const {
+  return False; // default implementation
+}
+Boolean MediaSource::isDVVideoStreamFramer() const {
+  return False; // default implementation
+}
+Boolean MediaSource::isJPEGVideoSource() const {
+  return False; // default implementation
+}
+Boolean MediaSource::isAMRAudioSource() const {
+  return False; // default implementation
+}
+Boolean MediaSource::isMPEG2TransportStreamMultiplexor() const {
+  return False; // default implementation
+}
+
+Boolean MediaSource::lookupByName(UsageEnvironment& env,
+				  char const* sourceName,
+				  MediaSource*& resultSource) {
+  resultSource = NULL; // unless we succeed
+
+  Medium* medium;
+  if (!Medium::lookupByName(env, sourceName, medium)) return False;
+
+  if (!medium->isSource()) {
+    env.setResultMsg(sourceName, " is not a media source");
+    return False;
+  }
+
+  resultSource = (MediaSource*)medium;
+  return True;
+}
+
+void MediaSource::getAttributes() const {
+  // Default implementation
+  envir().setResultMsg("");
+}
diff --git a/liveMedia/MultiFramedRTPSink.cpp b/liveMedia/MultiFramedRTPSink.cpp
new file mode 100644
index 0000000..e00407e
--- /dev/null
+++ b/liveMedia/MultiFramedRTPSink.cpp
@@ -0,0 +1,431 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for a common kind of payload format: Those which pack multiple,
+// complete codec frames (as many as possible) into each RTP packet.
+// Implementation
+
+#include "MultiFramedRTPSink.hh"
+#include "GroupsockHelper.hh"
+
+////////// MultiFramedRTPSink //////////
+
+void MultiFramedRTPSink::setPacketSizes(unsigned preferredPacketSize,
+					unsigned maxPacketSize) {
+  if (preferredPacketSize > maxPacketSize || preferredPacketSize == 0) return;
+      // sanity check
+
+  delete fOutBuf;
+  fOutBuf = new OutPacketBuffer(preferredPacketSize, maxPacketSize);
+  fOurMaxPacketSize = maxPacketSize; // save value, in case subclasses need it
+}
+
+#ifndef RTP_PAYLOAD_MAX_SIZE
+#define RTP_PAYLOAD_MAX_SIZE 1456
+      // Default max packet size (1500, minus allowance for IP, UDP, UMTP headers)
+      // (Also, make it a multiple of 4 bytes, just in case that matters.)
+#endif
+#ifndef RTP_PAYLOAD_PREFERRED_SIZE
+#define RTP_PAYLOAD_PREFERRED_SIZE ((RTP_PAYLOAD_MAX_SIZE) < 1000 ? (RTP_PAYLOAD_MAX_SIZE) : 1000)
+#endif
+
+MultiFramedRTPSink::MultiFramedRTPSink(UsageEnvironment& env,
+				       Groupsock* rtpGS,
+				       unsigned char rtpPayloadType,
+				       unsigned rtpTimestampFrequency,
+				       char const* rtpPayloadFormatName,
+				       unsigned numChannels)
+  : RTPSink(env, rtpGS, rtpPayloadType, rtpTimestampFrequency,
+	    rtpPayloadFormatName, numChannels),
+    fOutBuf(NULL), fCurFragmentationOffset(0), fPreviousFrameEndedFragmentation(False),
+    fOnSendErrorFunc(NULL), fOnSendErrorData(NULL) {
+  setPacketSizes((RTP_PAYLOAD_PREFERRED_SIZE), (RTP_PAYLOAD_MAX_SIZE));
+}
+
+MultiFramedRTPSink::~MultiFramedRTPSink() {
+  delete fOutBuf;
+}
+
+void MultiFramedRTPSink
+::doSpecialFrameHandling(unsigned /*fragmentationOffset*/,
+			 unsigned char* /*frameStart*/,
+			 unsigned /*numBytesInFrame*/,
+			 struct timeval framePresentationTime,
+			 unsigned /*numRemainingBytes*/) {
+  // default implementation: If this is the first frame in the packet,
+  // use its presentationTime for the RTP timestamp:
+  if (isFirstFrameInPacket()) {
+    setTimestamp(framePresentationTime);
+  }
+}
+
+Boolean MultiFramedRTPSink::allowFragmentationAfterStart() const {
+  return False; // by default
+}
+
+Boolean MultiFramedRTPSink::allowOtherFramesAfterLastFragment() const {
+  return False; // by default
+}
+
+Boolean MultiFramedRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+				 unsigned /*numBytesInFrame*/) const {
+  return True; // by default
+}
+
+unsigned MultiFramedRTPSink::specialHeaderSize() const {
+  // default implementation: Assume no special header:
+  return 0;
+}
+
+unsigned MultiFramedRTPSink::frameSpecificHeaderSize() const {
+  // default implementation: Assume no frame-specific header:
+  return 0;
+}
+
+unsigned MultiFramedRTPSink::computeOverflowForNewFrame(unsigned newFrameSize) const {
+  // default implementation: Just call numOverflowBytes()
+  return fOutBuf->numOverflowBytes(newFrameSize);
+}
+
+void MultiFramedRTPSink::setMarkerBit() {
+  unsigned rtpHdr = fOutBuf->extractWord(0);
+  rtpHdr |= 0x00800000;
+  fOutBuf->insertWord(rtpHdr, 0);
+}
+
+void MultiFramedRTPSink::setTimestamp(struct timeval framePresentationTime) {
+  // First, convert the presentation time to a 32-bit RTP timestamp:
+  fCurrentTimestamp = convertToRTPTimestamp(framePresentationTime);
+
+  // Then, insert it into the RTP packet:
+  fOutBuf->insertWord(fCurrentTimestamp, fTimestampPosition);
+}
+
+void MultiFramedRTPSink::setSpecialHeaderWord(unsigned word,
+					      unsigned wordPosition) {
+  fOutBuf->insertWord(word, fSpecialHeaderPosition + 4*wordPosition);
+}
+
+void MultiFramedRTPSink::setSpecialHeaderBytes(unsigned char const* bytes,
+					       unsigned numBytes,
+					       unsigned bytePosition) {
+  fOutBuf->insert(bytes, numBytes, fSpecialHeaderPosition + bytePosition);
+}
+
+void MultiFramedRTPSink::setFrameSpecificHeaderWord(unsigned word,
+						    unsigned wordPosition) {
+  fOutBuf->insertWord(word, fCurFrameSpecificHeaderPosition + 4*wordPosition);
+}
+
+void MultiFramedRTPSink::setFrameSpecificHeaderBytes(unsigned char const* bytes,
+						     unsigned numBytes,
+						     unsigned bytePosition) {
+  fOutBuf->insert(bytes, numBytes, fCurFrameSpecificHeaderPosition + bytePosition);
+}
+
+void MultiFramedRTPSink::setFramePadding(unsigned numPaddingBytes) {
+  if (numPaddingBytes > 0) {
+    // Add the padding bytes (with the last one being the padding size):
+    unsigned char paddingBuffer[255]; //max padding
+    memset(paddingBuffer, 0, numPaddingBytes);
+    paddingBuffer[numPaddingBytes-1] = numPaddingBytes;
+    fOutBuf->enqueue(paddingBuffer, numPaddingBytes);
+
+    // Set the RTP padding bit:
+    unsigned rtpHdr = fOutBuf->extractWord(0);
+    rtpHdr |= 0x20000000;
+    fOutBuf->insertWord(rtpHdr, 0);
+  }
+}
+
+Boolean MultiFramedRTPSink::continuePlaying() {
+  // Send the first packet.
+  // (This will also schedule any future sends.)
+  buildAndSendPacket(True);
+  return True;
+}
+
+void MultiFramedRTPSink::stopPlaying() {
+  fOutBuf->resetPacketStart();
+  fOutBuf->resetOffset();
+  fOutBuf->resetOverflowData();
+
+  // Then call the default "stopPlaying()" function:
+  MediaSink::stopPlaying();
+}
+
+void MultiFramedRTPSink::buildAndSendPacket(Boolean isFirstPacket) {
+  nextTask() = NULL;
+  fIsFirstPacket = isFirstPacket;
+
+  // Set up the RTP header:
+  unsigned rtpHdr = 0x80000000; // RTP version 2; marker ('M') bit not set (by default; it can be set later)
+  rtpHdr |= (fRTPPayloadType<<16);
+  rtpHdr |= fSeqNo; // sequence number
+  fOutBuf->enqueueWord(rtpHdr);
+
+  // Note where the RTP timestamp will go.
+  // (We can't fill this in until we start packing payload frames.)
+  fTimestampPosition = fOutBuf->curPacketSize();
+  fOutBuf->skipBytes(4); // leave a hole for the timestamp
+
+  fOutBuf->enqueueWord(SSRC());
+
+  // Allow for a special, payload-format-specific header following the
+  // RTP header:
+  fSpecialHeaderPosition = fOutBuf->curPacketSize();
+  fSpecialHeaderSize = specialHeaderSize();
+  fOutBuf->skipBytes(fSpecialHeaderSize);
+
+  // Begin packing as many (complete) frames into the packet as we can:
+  fTotalFrameSpecificHeaderSizes = 0;
+  fNoFramesLeft = False;
+  fNumFramesUsedSoFar = 0;
+  packFrame();
+}
+
+void MultiFramedRTPSink::packFrame() {
+  // Get the next frame.
+
+  // First, skip over the space we'll use for any frame-specific header:
+  fCurFrameSpecificHeaderPosition = fOutBuf->curPacketSize();
+  fCurFrameSpecificHeaderSize = frameSpecificHeaderSize();
+  fOutBuf->skipBytes(fCurFrameSpecificHeaderSize);
+  fTotalFrameSpecificHeaderSizes += fCurFrameSpecificHeaderSize;
+
+  // See if we have an overflow frame that was too big for the last pkt
+  if (fOutBuf->haveOverflowData()) {
+    // Use this frame before reading a new one from the source
+    unsigned frameSize = fOutBuf->overflowDataSize();
+    struct timeval presentationTime = fOutBuf->overflowPresentationTime();
+    unsigned durationInMicroseconds = fOutBuf->overflowDurationInMicroseconds();
+    fOutBuf->useOverflowData();
+
+    afterGettingFrame1(frameSize, 0, presentationTime, durationInMicroseconds);
+  } else {
+    // Normal case: we need to read a new frame from the source
+    if (fSource == NULL) return;
+    fSource->getNextFrame(fOutBuf->curPtr(), fOutBuf->totalBytesAvailable(),
+			  afterGettingFrame, this, ourHandleClosure, this);
+  }
+}
+
+void MultiFramedRTPSink
+::afterGettingFrame(void* clientData, unsigned numBytesRead,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned durationInMicroseconds) {
+  MultiFramedRTPSink* sink = (MultiFramedRTPSink*)clientData;
+  sink->afterGettingFrame1(numBytesRead, numTruncatedBytes,
+			   presentationTime, durationInMicroseconds);
+}
+
+void MultiFramedRTPSink
+::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+		     struct timeval presentationTime,
+		     unsigned durationInMicroseconds) {
+  if (fIsFirstPacket) {
+    // Record the fact that we're starting to play now:
+    gettimeofday(&fNextSendTime, NULL);
+  }
+
+  fMostRecentPresentationTime = presentationTime;
+  if (fInitialPresentationTime.tv_sec == 0 && fInitialPresentationTime.tv_usec == 0) {
+    fInitialPresentationTime = presentationTime;
+  }    
+
+  if (numTruncatedBytes > 0) {
+    unsigned const bufferSize = fOutBuf->totalBytesAvailable();
+    envir() << "MultiFramedRTPSink::afterGettingFrame1(): The input frame data was too large for our buffer size ("
+	    << bufferSize << ").  "
+	    << numTruncatedBytes << " bytes of trailing data was dropped!  Correct this by increasing \"OutPacketBuffer::maxSize\" to at least "
+	    << OutPacketBuffer::maxSize + numTruncatedBytes << ", *before* creating this 'RTPSink'.  (Current value is "
+	    << OutPacketBuffer::maxSize << ".)\n";
+  }
+  unsigned curFragmentationOffset = fCurFragmentationOffset;
+  unsigned numFrameBytesToUse = frameSize;
+  unsigned overflowBytes = 0;
+
+  // If we have already packed one or more frames into this packet,
+  // check whether this new frame is eligible to be packed after them.
+  // (This is independent of whether the packet has enough room for this
+  // new frame; that check comes later.)
+  if (fNumFramesUsedSoFar > 0) {
+    if ((fPreviousFrameEndedFragmentation
+	 && !allowOtherFramesAfterLastFragment())
+	|| !frameCanAppearAfterPacketStart(fOutBuf->curPtr(), frameSize)) {
+      // Save away this frame for next time:
+      numFrameBytesToUse = 0;
+      fOutBuf->setOverflowData(fOutBuf->curPacketSize(), frameSize,
+			       presentationTime, durationInMicroseconds);
+    }
+  }
+  fPreviousFrameEndedFragmentation = False;
+
+  if (numFrameBytesToUse > 0) {
+    // Check whether this frame overflows the packet
+    if (fOutBuf->wouldOverflow(frameSize)) {
+      // Don't use this frame now; instead, save it as overflow data, and
+      // send it in the next packet instead.  However, if the frame is too
+      // big to fit in a packet by itself, then we need to fragment it (and
+      // use some of it in this packet, if the payload format permits this.)
+      if (isTooBigForAPacket(frameSize)
+          && (fNumFramesUsedSoFar == 0 || allowFragmentationAfterStart())) {
+        // We need to fragment this frame, and use some of it now:
+        overflowBytes = computeOverflowForNewFrame(frameSize);
+        numFrameBytesToUse -= overflowBytes;
+        fCurFragmentationOffset += numFrameBytesToUse;
+      } else {
+        // We don't use any of this frame now:
+        overflowBytes = frameSize;
+        numFrameBytesToUse = 0;
+      }
+      fOutBuf->setOverflowData(fOutBuf->curPacketSize() + numFrameBytesToUse,
+			       overflowBytes, presentationTime, durationInMicroseconds);
+    } else if (fCurFragmentationOffset > 0) {
+      // This is the last fragment of a frame that was fragmented over
+      // more than one packet.  Do any special handling for this case:
+      fCurFragmentationOffset = 0;
+      fPreviousFrameEndedFragmentation = True;
+    }
+  }
+
+  if (numFrameBytesToUse == 0 && frameSize > 0) {
+    // Send our packet now, because we have filled it up:
+    sendPacketIfNecessary();
+  } else {
+    // Use this frame in our outgoing packet:
+    unsigned char* frameStart = fOutBuf->curPtr();
+    fOutBuf->increment(numFrameBytesToUse);
+        // do this now, in case "doSpecialFrameHandling()" calls "setFramePadding()" to append padding bytes
+
+    // Here's where any payload format specific processing gets done:
+    doSpecialFrameHandling(curFragmentationOffset, frameStart,
+			   numFrameBytesToUse, presentationTime,
+			   overflowBytes);
+
+    ++fNumFramesUsedSoFar;
+
+    // Update the time at which the next packet should be sent, based
+    // on the duration of the frame that we just packed into it.
+    // However, if this frame has overflow data remaining, then don't
+    // count its duration yet.
+    if (overflowBytes == 0) {
+      fNextSendTime.tv_usec += durationInMicroseconds;
+      fNextSendTime.tv_sec += fNextSendTime.tv_usec/1000000;
+      fNextSendTime.tv_usec %= 1000000;
+    }
+
+    // Send our packet now if (i) it's already at our preferred size, or
+    // (ii) (heuristic) another frame of the same size as the one we just
+    //      read would overflow the packet, or
+    // (iii) it contains the last fragment of a fragmented frame, and we
+    //      don't allow anything else to follow this or
+    // (iv) only one frame per packet is allowed:
+    if (fOutBuf->isPreferredSize()
+        || fOutBuf->wouldOverflow(numFrameBytesToUse)
+        || (fPreviousFrameEndedFragmentation &&
+            !allowOtherFramesAfterLastFragment())
+        || !frameCanAppearAfterPacketStart(fOutBuf->curPtr() - frameSize,
+					   frameSize) ) {
+      // The packet is ready to be sent now
+      sendPacketIfNecessary();
+    } else {
+      // There's room for more frames; try getting another:
+      packFrame();
+    }
+  }
+}
+
+static unsigned const rtpHeaderSize = 12;
+
+Boolean MultiFramedRTPSink::isTooBigForAPacket(unsigned numBytes) const {
+  // Check whether a 'numBytes'-byte frame - together with a RTP header and
+  // (possible) special headers - would be too big for an output packet:
+  // (Later allow for RTP extension header!) #####
+  numBytes += rtpHeaderSize + specialHeaderSize() + frameSpecificHeaderSize();
+  return fOutBuf->isTooBigForAPacket(numBytes);
+}
+
+void MultiFramedRTPSink::sendPacketIfNecessary() {
+  if (fNumFramesUsedSoFar > 0) {
+    // Send the packet:
+#ifdef TEST_LOSS
+    if ((our_random()%10) != 0) // simulate 10% packet loss #####
+#endif
+      if (!fRTPInterface.sendPacket(fOutBuf->packet(), fOutBuf->curPacketSize())) {
+	// if failure handler has been specified, call it
+	if (fOnSendErrorFunc != NULL) (*fOnSendErrorFunc)(fOnSendErrorData);
+      }
+    ++fPacketCount;
+    fTotalOctetCount += fOutBuf->curPacketSize();
+    fOctetCount += fOutBuf->curPacketSize()
+      - rtpHeaderSize - fSpecialHeaderSize - fTotalFrameSpecificHeaderSizes;
+
+    ++fSeqNo; // for next time
+  }
+
+  if (fOutBuf->haveOverflowData()
+      && fOutBuf->totalBytesAvailable() > fOutBuf->totalBufferSize()/2) {
+    // Efficiency hack: Reset the packet start pointer to just in front of
+    // the overflow data (allowing for the RTP header and special headers),
+    // so that we probably don't have to "memmove()" the overflow data
+    // into place when building the next packet:
+    unsigned newPacketStart = fOutBuf->curPacketSize()
+      - (rtpHeaderSize + fSpecialHeaderSize + frameSpecificHeaderSize());
+    fOutBuf->adjustPacketStart(newPacketStart);
+  } else {
+    // Normal case: Reset the packet start pointer back to the start:
+    fOutBuf->resetPacketStart();
+  }
+  fOutBuf->resetOffset();
+  fNumFramesUsedSoFar = 0;
+
+  if (fNoFramesLeft) {
+    // We're done:
+    onSourceClosure();
+  } else {
+    // We have more frames left to send.  Figure out when the next frame
+    // is due to start playing, then make sure that we wait this long before
+    // sending the next packet.
+    struct timeval timeNow;
+    gettimeofday(&timeNow, NULL);
+    int secsDiff = fNextSendTime.tv_sec - timeNow.tv_sec;
+    int64_t uSecondsToGo = secsDiff*1000000 + (fNextSendTime.tv_usec - timeNow.tv_usec);
+    if (uSecondsToGo < 0 || secsDiff < 0) { // sanity check: Make sure that the time-to-delay is non-negative:
+      uSecondsToGo = 0;
+    }
+
+    // Delay this amount of time:
+    nextTask() = envir().taskScheduler().scheduleDelayedTask(uSecondsToGo, (TaskFunc*)sendNext, this);
+  }
+}
+
+// The following is called after each delay between packet sends:
+void MultiFramedRTPSink::sendNext(void* firstArg) {
+  MultiFramedRTPSink* sink = (MultiFramedRTPSink*)firstArg;
+  sink->buildAndSendPacket(False);
+}
+
+void MultiFramedRTPSink::ourHandleClosure(void* clientData) {
+  MultiFramedRTPSink* sink = (MultiFramedRTPSink*)clientData;
+  // There are no frames left, but we may have a partially built packet
+  //  to send
+  sink->fNoFramesLeft = True;
+  sink->sendPacketIfNecessary();
+}
diff --git a/liveMedia/MultiFramedRTPSource.cpp b/liveMedia/MultiFramedRTPSource.cpp
new file mode 100644
index 0000000..15f8cd0
--- /dev/null
+++ b/liveMedia/MultiFramedRTPSource.cpp
@@ -0,0 +1,638 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP source for a common kind of payload format: Those that pack multiple,
+// complete codec frames (as many as possible) into each RTP packet.
+// Implementation
+
+#include "MultiFramedRTPSource.hh"
+#include "RTCP.hh"
+#include "GroupsockHelper.hh"
+#include <string.h>
+
+////////// ReorderingPacketBuffer definition //////////
+
+class ReorderingPacketBuffer {
+public:
+  ReorderingPacketBuffer(BufferedPacketFactory* packetFactory);
+  virtual ~ReorderingPacketBuffer();
+  void reset();
+
+  BufferedPacket* getFreePacket(MultiFramedRTPSource* ourSource);
+  Boolean storePacket(BufferedPacket* bPacket);
+  BufferedPacket* getNextCompletedPacket(Boolean& packetLossPreceded);
+  void releaseUsedPacket(BufferedPacket* packet);
+  void freePacket(BufferedPacket* packet) {
+    if (packet != fSavedPacket) {
+      delete packet;
+    } else {
+      fSavedPacketFree = True;
+    }
+  }
+  Boolean isEmpty() const { return fHeadPacket == NULL; }
+
+  void setThresholdTime(unsigned uSeconds) { fThresholdTime = uSeconds; }
+  void resetHaveSeenFirstPacket() { fHaveSeenFirstPacket = False; }
+
+private:
+  BufferedPacketFactory* fPacketFactory;
+  unsigned fThresholdTime; // uSeconds
+  Boolean fHaveSeenFirstPacket; // used to set initial "fNextExpectedSeqNo"
+  unsigned short fNextExpectedSeqNo;
+  BufferedPacket* fHeadPacket;
+  BufferedPacket* fTailPacket;
+  BufferedPacket* fSavedPacket;
+      // to avoid calling new/free in the common case
+  Boolean fSavedPacketFree;
+};
+
+
+////////// MultiFramedRTPSource implementation //////////
+
+MultiFramedRTPSource
+::MultiFramedRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		       unsigned char rtpPayloadFormat,
+		       unsigned rtpTimestampFrequency,
+		       BufferedPacketFactory* packetFactory)
+  : RTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency) {
+  reset();
+  fReorderingBuffer = new ReorderingPacketBuffer(packetFactory);
+
+  // Try to use a big receive buffer for RTP:
+  increaseReceiveBufferTo(env, RTPgs->socketNum(), 50*1024);
+}
+
+void MultiFramedRTPSource::reset() {
+  fCurrentPacketBeginsFrame = True; // by default
+  fCurrentPacketCompletesFrame = True; // by default
+  fAreDoingNetworkReads = False;
+  fPacketReadInProgress = NULL;
+  fNeedDelivery = False;
+  fPacketLossInFragmentedFrame = False;
+}
+
+MultiFramedRTPSource::~MultiFramedRTPSource() {
+  delete fReorderingBuffer;
+}
+
+Boolean MultiFramedRTPSource
+::processSpecialHeader(BufferedPacket* /*packet*/,
+		       unsigned& resultSpecialHeaderSize) {
+  // Default implementation: Assume no special header:
+  resultSpecialHeaderSize = 0;
+  return True;
+}
+
+Boolean MultiFramedRTPSource
+::packetIsUsableInJitterCalculation(unsigned char* /*packet*/,
+				    unsigned /*packetSize*/) {
+  // Default implementation:
+  return True;
+}
+
+void MultiFramedRTPSource::doStopGettingFrames() {
+  if (fPacketReadInProgress != NULL) {
+    fReorderingBuffer->freePacket(fPacketReadInProgress);
+    fPacketReadInProgress = NULL;
+  }
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+  fRTPInterface.stopNetworkReading();
+  fReorderingBuffer->reset();
+  reset();
+}
+
+void MultiFramedRTPSource::doGetNextFrame() {
+  if (!fAreDoingNetworkReads) {
+    // Turn on background read handling of incoming packets:
+    fAreDoingNetworkReads = True;
+    TaskScheduler::BackgroundHandlerProc* handler
+      = (TaskScheduler::BackgroundHandlerProc*)&networkReadHandler;
+    fRTPInterface.startNetworkReading(handler);
+  }
+
+  fSavedTo = fTo;
+  fSavedMaxSize = fMaxSize;
+  fFrameSize = 0; // for now
+  fNeedDelivery = True;
+  doGetNextFrame1();
+}
+
+void MultiFramedRTPSource::doGetNextFrame1() {
+  while (fNeedDelivery) {
+    // If we already have packet data available, then deliver it now.
+    Boolean packetLossPrecededThis;
+    BufferedPacket* nextPacket
+      = fReorderingBuffer->getNextCompletedPacket(packetLossPrecededThis);
+    if (nextPacket == NULL) break;
+
+    fNeedDelivery = False;
+
+    if (nextPacket->useCount() == 0) {
+      // Before using the packet, check whether it has a special header
+      // that needs to be processed:
+      unsigned specialHeaderSize;
+      if (!processSpecialHeader(nextPacket, specialHeaderSize)) {
+	// Something's wrong with the header; reject the packet:
+	fReorderingBuffer->releaseUsedPacket(nextPacket);
+	fNeedDelivery = True;
+	continue;
+      }
+      nextPacket->skip(specialHeaderSize);
+    }
+
+    // Check whether we're part of a multi-packet frame, and whether
+    // there was packet loss that would render this packet unusable:
+    if (fCurrentPacketBeginsFrame) {
+      if (packetLossPrecededThis || fPacketLossInFragmentedFrame) {
+	// We didn't get all of the previous frame.
+	// Forget any data that we used from it:
+	fTo = fSavedTo; fMaxSize = fSavedMaxSize;
+	fFrameSize = 0;
+      }
+      fPacketLossInFragmentedFrame = False;
+    } else if (packetLossPrecededThis) {
+      // We're in a multi-packet frame, with preceding packet loss
+      fPacketLossInFragmentedFrame = True;
+    }
+    if (fPacketLossInFragmentedFrame) {
+      // This packet is unusable; reject it:
+      fReorderingBuffer->releaseUsedPacket(nextPacket);
+      fNeedDelivery = True;
+      continue;
+    }
+
+    // The packet is usable. Deliver all or part of it to our caller:
+    unsigned frameSize;
+    nextPacket->use(fTo, fMaxSize, frameSize, fNumTruncatedBytes,
+		    fCurPacketRTPSeqNum, fCurPacketRTPTimestamp,
+		    fPresentationTime, fCurPacketHasBeenSynchronizedUsingRTCP,
+		    fCurPacketMarkerBit);
+    fFrameSize += frameSize;
+
+    if (!nextPacket->hasUsableData()) {
+      // We're completely done with this packet now
+      fReorderingBuffer->releaseUsedPacket(nextPacket);
+    }
+
+    if (fCurrentPacketCompletesFrame && fFrameSize > 0) {
+      // We have all the data that the client wants.
+      if (fNumTruncatedBytes > 0) {
+	envir() << "MultiFramedRTPSource::doGetNextFrame1(): The total received frame size exceeds the client's buffer size ("
+		<< fSavedMaxSize << ").  "
+		<< fNumTruncatedBytes << " bytes of trailing data will be dropped!\n";
+      }
+      // Call our own 'after getting' function, so that the downstream object can consume the data:
+      if (fReorderingBuffer->isEmpty()) {
+	// Common case optimization: There are no more queued incoming packets, so this code will not get
+	// executed again without having first returned to the event loop.  Call our 'after getting' function
+	// directly, because there's no risk of a long chain of recursion (and thus stack overflow):
+	afterGetting(this);
+      } else {
+	// Special case: Call our 'after getting' function via the event loop.
+	nextTask() = envir().taskScheduler().scheduleDelayedTask(0,
+								 (TaskFunc*)FramedSource::afterGetting, this);
+      }
+    } else {
+      // This packet contained fragmented data, and does not complete
+      // the data that the client wants.  Keep getting data:
+      fTo += frameSize; fMaxSize -= frameSize;
+      fNeedDelivery = True;
+    }
+  }
+}
+
+void MultiFramedRTPSource
+::setPacketReorderingThresholdTime(unsigned uSeconds) {
+  fReorderingBuffer->setThresholdTime(uSeconds);
+}
+
+#define ADVANCE(n) do { bPacket->skip(n); } while (0)
+
+void MultiFramedRTPSource::networkReadHandler(MultiFramedRTPSource* source, int /*mask*/) {
+  source->networkReadHandler1();
+}
+
+void MultiFramedRTPSource::networkReadHandler1() {
+  BufferedPacket* bPacket = fPacketReadInProgress;
+  if (bPacket == NULL) {
+    // Normal case: Get a free BufferedPacket descriptor to hold the new network packet:
+    bPacket = fReorderingBuffer->getFreePacket(this);
+  }
+
+  // Read the network packet, and perform sanity checks on the RTP header:
+  Boolean readSuccess = False;
+  do {
+    struct sockaddr_in fromAddress;
+    Boolean packetReadWasIncomplete = fPacketReadInProgress != NULL;
+    if (!bPacket->fillInData(fRTPInterface, fromAddress, packetReadWasIncomplete)) {
+      if (bPacket->bytesAvailable() == 0) { // should not happen??
+	envir() << "MultiFramedRTPSource internal error: Hit limit when reading incoming packet over TCP\n";
+      }
+      fPacketReadInProgress = NULL;
+      break;
+    }
+    if (packetReadWasIncomplete) {
+      // We need additional read(s) before we can process the incoming packet:
+      fPacketReadInProgress = bPacket;
+      return;
+    } else {
+      fPacketReadInProgress = NULL;
+    }
+#ifdef TEST_LOSS
+    setPacketReorderingThresholdTime(0);
+       // don't wait for 'lost' packets to arrive out-of-order later
+    if ((our_random()%10) == 0) break; // simulate 10% packet loss
+#endif
+
+    if (fCrypto != NULL) { // The packet is SRTP; authenticate/decrypt it first
+      unsigned newPacketSize;
+      if (!fCrypto->processIncomingSRTPPacket(bPacket->data(), bPacket->dataSize(), newPacketSize)) break;
+      if (newPacketSize > bPacket->dataSize()) break; // sanity check; shouldn't happen
+      bPacket->removePadding(bPacket->dataSize() - newPacketSize); // treat MKI+auth as padding
+    }
+
+    // Check for the 12-byte RTP header:
+    if (bPacket->dataSize() < 12) break;
+    unsigned rtpHdr = ntohl(*(u_int32_t*)(bPacket->data())); ADVANCE(4);
+    Boolean rtpMarkerBit = (rtpHdr&0x00800000) != 0;
+    unsigned rtpTimestamp = ntohl(*(u_int32_t*)(bPacket->data()));ADVANCE(4);
+    unsigned rtpSSRC = ntohl(*(u_int32_t*)(bPacket->data())); ADVANCE(4);
+
+    // Check the RTP version number (it should be 2):
+    if ((rtpHdr&0xC0000000) != 0x80000000) break;
+
+    // Check the Payload Type.
+    unsigned char rtpPayloadType = (unsigned char)((rtpHdr&0x007F0000)>>16);
+    if (rtpPayloadType != rtpPayloadFormat()) {
+      if (fRTCPInstanceForMultiplexedRTCPPackets != NULL
+	  && rtpPayloadType >= 64 && rtpPayloadType <= 95) {
+	// This is a multiplexed RTCP packet, and we've been asked to deliver such packets.
+	// Do so now:
+	fRTCPInstanceForMultiplexedRTCPPackets
+	  ->injectReport(bPacket->data()-12, bPacket->dataSize()+12, fromAddress);
+      }
+      break;
+    }
+
+    // Skip over any CSRC identifiers in the header:
+    unsigned cc = (rtpHdr>>24)&0x0F;
+    if (bPacket->dataSize() < cc*4) break;
+    ADVANCE(cc*4);
+
+    // Check for (& ignore) any RTP header extension
+    if (rtpHdr&0x10000000) {
+      if (bPacket->dataSize() < 4) break;
+      unsigned extHdr = ntohl(*(u_int32_t*)(bPacket->data())); ADVANCE(4);
+      unsigned remExtSize = 4*(extHdr&0xFFFF);
+      if (bPacket->dataSize() < remExtSize) break;
+      ADVANCE(remExtSize);
+    }
+
+    // Discard any padding bytes:
+    if (rtpHdr&0x20000000) {
+      if (bPacket->dataSize() == 0) break;
+      unsigned numPaddingBytes
+	= (unsigned)(bPacket->data())[bPacket->dataSize()-1];
+      if (bPacket->dataSize() < numPaddingBytes) break;
+      bPacket->removePadding(numPaddingBytes);
+    }
+
+    // The rest of the packet is the usable data.  Record and save it:
+    if (rtpSSRC != fLastReceivedSSRC) {
+      // The SSRC of incoming packets has changed.  Unfortunately we don't yet handle streams that contain multiple SSRCs,
+      // but we can handle a single-SSRC stream where the SSRC changes occasionally:
+      fLastReceivedSSRC = rtpSSRC;
+      fReorderingBuffer->resetHaveSeenFirstPacket();
+    }
+    unsigned short rtpSeqNo = (unsigned short)(rtpHdr&0xFFFF);
+    Boolean usableInJitterCalculation
+      = packetIsUsableInJitterCalculation((bPacket->data()),
+						  bPacket->dataSize());
+    struct timeval presentationTime; // computed by:
+    Boolean hasBeenSyncedUsingRTCP; // computed by:
+    receptionStatsDB()
+      .noteIncomingPacket(rtpSSRC, rtpSeqNo, rtpTimestamp,
+			  timestampFrequency(),
+			  usableInJitterCalculation, presentationTime,
+			  hasBeenSyncedUsingRTCP, bPacket->dataSize());
+
+    // Fill in the rest of the packet descriptor, and store it:
+    struct timeval timeNow;
+    gettimeofday(&timeNow, NULL);
+    bPacket->assignMiscParams(rtpSeqNo, rtpTimestamp, presentationTime,
+			      hasBeenSyncedUsingRTCP, rtpMarkerBit,
+			      timeNow);
+    if (!fReorderingBuffer->storePacket(bPacket)) break;
+
+    readSuccess = True;
+  } while (0);
+  if (!readSuccess) fReorderingBuffer->freePacket(bPacket);
+
+  doGetNextFrame1();
+  // If we didn't get proper data this time, we'll get another chance
+}
+
+
+////////// BufferedPacket and BufferedPacketFactory implementation /////
+
+#define MAX_PACKET_SIZE 65536
+
+BufferedPacket::BufferedPacket()
+  : fPacketSize(MAX_PACKET_SIZE),
+    fBuf(new unsigned char[MAX_PACKET_SIZE]),
+    fNextPacket(NULL) {
+}
+
+BufferedPacket::~BufferedPacket() {
+  delete fNextPacket;
+  delete[] fBuf;
+}
+
+void BufferedPacket::reset() {
+  fHead = fTail = 0;
+  fUseCount = 0;
+  fIsFirstPacket = False; // by default
+}
+
+// The following function has been deprecated:
+unsigned BufferedPacket
+::nextEnclosedFrameSize(unsigned char*& /*framePtr*/, unsigned dataSize) {
+  // By default, use the entire buffered data, even though it may consist
+  // of more than one frame, on the assumption that the client doesn't
+  // care.  (This is more efficient than delivering a frame at a time)
+  return dataSize;
+}
+
+void BufferedPacket
+::getNextEnclosedFrameParameters(unsigned char*& framePtr, unsigned dataSize,
+				 unsigned& frameSize,
+				 unsigned& frameDurationInMicroseconds) {
+  // By default, use the entire buffered data, even though it may consist
+  // of more than one frame, on the assumption that the client doesn't
+  // care.  (This is more efficient than delivering a frame at a time)
+
+  // For backwards-compatibility with existing uses of (the now deprecated)
+  // "nextEnclosedFrameSize()", call that function to implement this one:
+  frameSize = nextEnclosedFrameSize(framePtr, dataSize);
+
+  frameDurationInMicroseconds = 0; // by default.  Subclasses should correct this.
+}
+
+Boolean BufferedPacket::fillInData(RTPInterface& rtpInterface, struct sockaddr_in& fromAddress,
+				   Boolean& packetReadWasIncomplete) {
+  if (!packetReadWasIncomplete) reset();
+
+  unsigned const maxBytesToRead = bytesAvailable();
+  if (maxBytesToRead == 0) return False; // exceeded buffer size when reading over TCP
+
+  unsigned numBytesRead;
+  int tcpSocketNum; // not used
+  unsigned char tcpStreamChannelId; // not used
+  if (!rtpInterface.handleRead(&fBuf[fTail], maxBytesToRead,
+			       numBytesRead, fromAddress,
+			       tcpSocketNum, tcpStreamChannelId,
+			       packetReadWasIncomplete)) {
+    return False;
+  }
+  fTail += numBytesRead;
+  return True;
+}
+
+void BufferedPacket
+::assignMiscParams(unsigned short rtpSeqNo, unsigned rtpTimestamp,
+		   struct timeval presentationTime,
+		   Boolean hasBeenSyncedUsingRTCP, Boolean rtpMarkerBit,
+		   struct timeval timeReceived) {
+  fRTPSeqNo = rtpSeqNo;
+  fRTPTimestamp = rtpTimestamp;
+  fPresentationTime = presentationTime;
+  fHasBeenSyncedUsingRTCP = hasBeenSyncedUsingRTCP;
+  fRTPMarkerBit = rtpMarkerBit;
+  fTimeReceived = timeReceived;
+}
+
+void BufferedPacket::skip(unsigned numBytes) {
+  fHead += numBytes;
+  if (fHead > fTail) fHead = fTail;
+}
+
+void BufferedPacket::removePadding(unsigned numBytes) {
+  if (numBytes > fTail-fHead) numBytes = fTail-fHead;
+  fTail -= numBytes;
+}
+
+void BufferedPacket::appendData(unsigned char* newData, unsigned numBytes) {
+  if (numBytes > fPacketSize-fTail) numBytes = fPacketSize - fTail;
+  memmove(&fBuf[fTail], newData, numBytes);
+  fTail += numBytes;
+}
+
+void BufferedPacket::use(unsigned char* to, unsigned toSize,
+			 unsigned& bytesUsed, unsigned& bytesTruncated,
+			 unsigned short& rtpSeqNo, unsigned& rtpTimestamp,
+			 struct timeval& presentationTime,
+			 Boolean& hasBeenSyncedUsingRTCP,
+			 Boolean& rtpMarkerBit) {
+  unsigned char* origFramePtr = &fBuf[fHead];
+  unsigned char* newFramePtr = origFramePtr; // may change in the call below
+  unsigned frameSize, frameDurationInMicroseconds;
+  getNextEnclosedFrameParameters(newFramePtr, fTail - fHead,
+				 frameSize, frameDurationInMicroseconds);
+  if (frameSize > toSize) {
+    bytesTruncated += frameSize - toSize;
+    bytesUsed = toSize;
+  } else {
+    bytesTruncated = 0;
+    bytesUsed = frameSize;
+  }
+
+  memmove(to, newFramePtr, bytesUsed);
+  fHead += (newFramePtr - origFramePtr) + frameSize;
+  ++fUseCount;
+
+  rtpSeqNo = fRTPSeqNo;
+  rtpTimestamp = fRTPTimestamp;
+  presentationTime = fPresentationTime;
+  hasBeenSyncedUsingRTCP = fHasBeenSyncedUsingRTCP;
+  rtpMarkerBit = fRTPMarkerBit;
+
+  // Update "fPresentationTime" for the next enclosed frame (if any):
+  fPresentationTime.tv_usec += frameDurationInMicroseconds;
+  if (fPresentationTime.tv_usec >= 1000000) {
+    fPresentationTime.tv_sec += fPresentationTime.tv_usec/1000000;
+    fPresentationTime.tv_usec = fPresentationTime.tv_usec%1000000;
+  }
+}
+
+BufferedPacketFactory::BufferedPacketFactory() {
+}
+
+BufferedPacketFactory::~BufferedPacketFactory() {
+}
+
+BufferedPacket* BufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* /*ourSource*/) {
+  return new BufferedPacket;
+}
+
+
+////////// ReorderingPacketBuffer implementation //////////
+
+ReorderingPacketBuffer
+::ReorderingPacketBuffer(BufferedPacketFactory* packetFactory)
+  : fThresholdTime(100000) /* default reordering threshold: 100 ms */,
+    fHaveSeenFirstPacket(False), fHeadPacket(NULL), fTailPacket(NULL), fSavedPacket(NULL), fSavedPacketFree(True) {
+  fPacketFactory = (packetFactory == NULL)
+    ? (new BufferedPacketFactory)
+    : packetFactory;
+}
+
+ReorderingPacketBuffer::~ReorderingPacketBuffer() {
+  reset();
+  delete fPacketFactory;
+}
+
+void ReorderingPacketBuffer::reset() {
+  if (fSavedPacketFree) delete fSavedPacket; // because fSavedPacket is not in the list
+  delete fHeadPacket; // will also delete fSavedPacket if it's in the list
+  resetHaveSeenFirstPacket();
+  fHeadPacket = fTailPacket = fSavedPacket = NULL;
+}
+
+BufferedPacket* ReorderingPacketBuffer::getFreePacket(MultiFramedRTPSource* ourSource) {
+  if (fSavedPacket == NULL) { // we're being called for the first time
+    fSavedPacket = fPacketFactory->createNewPacket(ourSource);
+    fSavedPacketFree = True;
+  }
+
+  if (fSavedPacketFree == True) {
+    fSavedPacketFree = False;
+    return fSavedPacket;
+  } else {
+    return fPacketFactory->createNewPacket(ourSource);
+  }
+}
+
+Boolean ReorderingPacketBuffer::storePacket(BufferedPacket* bPacket) {
+  unsigned short rtpSeqNo = bPacket->rtpSeqNo();
+
+  if (!fHaveSeenFirstPacket) {
+    fNextExpectedSeqNo = rtpSeqNo; // initialization
+    bPacket->isFirstPacket() = True;
+    fHaveSeenFirstPacket = True;
+  }
+
+  // Ignore this packet if its sequence number is less than the one
+  // that we're looking for (in this case, it's been excessively delayed).
+  if (seqNumLT(rtpSeqNo, fNextExpectedSeqNo)) return False;
+
+  if (fTailPacket == NULL) {
+    // Common case: There are no packets in the queue; this will be the first one:
+    bPacket->nextPacket() = NULL;
+    fHeadPacket = fTailPacket = bPacket;
+    return True;
+  }
+
+  if (seqNumLT(fTailPacket->rtpSeqNo(), rtpSeqNo)) {
+    // The next-most common case: There are packets already in the queue; this packet arrived in order => put it at the tail:
+    bPacket->nextPacket() = NULL;
+    fTailPacket->nextPacket() = bPacket;
+    fTailPacket = bPacket;
+    return True;
+  } 
+
+  if (rtpSeqNo == fTailPacket->rtpSeqNo()) {
+    // This is a duplicate packet - ignore it
+    return False;
+  }
+
+  // Rare case: This packet is out-of-order.  Run through the list (from the head), to figure out where it belongs:
+  BufferedPacket* beforePtr = NULL;
+  BufferedPacket* afterPtr = fHeadPacket;
+  while (afterPtr != NULL) {
+    if (seqNumLT(rtpSeqNo, afterPtr->rtpSeqNo())) break; // it comes here
+    if (rtpSeqNo == afterPtr->rtpSeqNo()) {
+      // This is a duplicate packet - ignore it
+      return False;
+    }
+
+    beforePtr = afterPtr;
+    afterPtr = afterPtr->nextPacket();
+  }
+
+  // Link our new packet between "beforePtr" and "afterPtr":
+  bPacket->nextPacket() = afterPtr;
+  if (beforePtr == NULL) {
+    fHeadPacket = bPacket;
+  } else {
+    beforePtr->nextPacket() = bPacket;
+  }
+
+  return True;
+}
+
+void ReorderingPacketBuffer::releaseUsedPacket(BufferedPacket* packet) {
+  // ASSERT: packet == fHeadPacket
+  // ASSERT: fNextExpectedSeqNo == packet->rtpSeqNo()
+  ++fNextExpectedSeqNo; // because we're finished with this packet now
+
+  fHeadPacket = fHeadPacket->nextPacket();
+  if (!fHeadPacket) { 
+    fTailPacket = NULL;
+  }
+  packet->nextPacket() = NULL;
+
+  freePacket(packet);
+}
+
+BufferedPacket* ReorderingPacketBuffer
+::getNextCompletedPacket(Boolean& packetLossPreceded) {
+  if (fHeadPacket == NULL) return NULL;
+
+  // Check whether the next packet we want is already at the head
+  // of the queue:
+  // ASSERT: fHeadPacket->rtpSeqNo() >= fNextExpectedSeqNo
+  if (fHeadPacket->rtpSeqNo() == fNextExpectedSeqNo) {
+    packetLossPreceded = fHeadPacket->isFirstPacket();
+        // (The very first packet is treated as if there was packet loss beforehand.)
+    return fHeadPacket;
+  }
+
+  // We're still waiting for our desired packet to arrive.  However, if
+  // our time threshold has been exceeded, then forget it, and return
+  // the head packet instead:
+  Boolean timeThresholdHasBeenExceeded;
+  if (fThresholdTime == 0) {
+    timeThresholdHasBeenExceeded = True; // optimization
+  } else {
+    struct timeval timeNow;
+    gettimeofday(&timeNow, NULL);
+    unsigned uSecondsSinceReceived
+      = (timeNow.tv_sec - fHeadPacket->timeReceived().tv_sec)*1000000
+      + (timeNow.tv_usec - fHeadPacket->timeReceived().tv_usec);
+    timeThresholdHasBeenExceeded = uSecondsSinceReceived > fThresholdTime;
+  }
+  if (timeThresholdHasBeenExceeded) {
+    fNextExpectedSeqNo = fHeadPacket->rtpSeqNo();
+        // we've given up on earlier packets now
+    packetLossPreceded = True;
+    return fHeadPacket;
+  }
+
+  // Otherwise, keep waiting for our desired packet to arrive:
+  return NULL;
+}
diff --git a/liveMedia/OggDemuxedTrack.cpp b/liveMedia/OggDemuxedTrack.cpp
new file mode 100644
index 0000000..f57071b
--- /dev/null
+++ b/liveMedia/OggDemuxedTrack.cpp
@@ -0,0 +1,43 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A media track, demultiplexed from an Ogg file
+// Implementation
+
+#include "OggDemuxedTrack.hh"
+#include "OggFile.hh"
+
+OggDemuxedTrack::OggDemuxedTrack(UsageEnvironment& env, unsigned trackNumber, OggDemux& sourceDemux)
+  : FramedSource(env),
+    fOurTrackNumber(trackNumber), fOurSourceDemux(sourceDemux),
+    fCurrentPageIsContinuation(False) {
+  fNextPresentationTime.tv_sec = 0; fNextPresentationTime.tv_usec = 0;
+}
+
+OggDemuxedTrack::~OggDemuxedTrack() {
+  fOurSourceDemux.removeTrack(fOurTrackNumber);
+}
+
+void OggDemuxedTrack::doGetNextFrame() {
+  fOurSourceDemux.continueReading();
+}
+
+char const* OggDemuxedTrack::MIMEtype() const {
+  OggTrack* track = fOurSourceDemux.fOurFile.lookup(fOurTrackNumber);
+  if (track == NULL) return "(unknown)"; // shouldn't happen
+  return track->mimeType;
+}
diff --git a/liveMedia/OggDemuxedTrack.hh b/liveMedia/OggDemuxedTrack.hh
new file mode 100644
index 0000000..836a299
--- /dev/null
+++ b/liveMedia/OggDemuxedTrack.hh
@@ -0,0 +1,58 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A media track, demultiplexed from an Ogg file
+// C++ header
+
+#ifndef _OGG_DEMUXED_TRACK_HH
+#define _OGG_DEMUXED_TRACK_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class OggDemux; // forward
+
+class OggDemuxedTrack: public FramedSource {
+private: // We are created only by a OggDemux (a friend)
+  friend class OggDemux;
+  OggDemuxedTrack(UsageEnvironment& env, unsigned trackNumber, OggDemux& sourceDemux);
+  virtual ~OggDemuxedTrack();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual char const* MIMEtype() const;
+
+private: // We are accessed only by OggDemux and by OggFileParser (a friend)
+  friend class OggFileParser;
+  unsigned char*& to() { return fTo; }
+  unsigned& maxSize() { return fMaxSize; }
+  unsigned& frameSize() { return fFrameSize; }
+  unsigned& numTruncatedBytes() { return fNumTruncatedBytes; }
+  struct timeval& presentationTime() { return fPresentationTime; }
+  unsigned& durationInMicroseconds() { return fDurationInMicroseconds; }
+  struct timeval& nextPresentationTime() { return fNextPresentationTime; }
+
+private:
+  unsigned fOurTrackNumber;
+  OggDemux& fOurSourceDemux;
+  Boolean fCurrentPageIsContinuation;
+  struct timeval fNextPresentationTime;
+};
+
+#endif
diff --git a/liveMedia/OggFile.cpp b/liveMedia/OggFile.cpp
new file mode 100644
index 0000000..3c7a8c3
--- /dev/null
+++ b/liveMedia/OggFile.cpp
@@ -0,0 +1,328 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class that encapsulates an Ogg file.
+// Implementation
+
+#include "OggFileParser.hh"
+#include "OggDemuxedTrack.hh"
+#include "ByteStreamFileSource.hh"
+#include "VorbisAudioRTPSink.hh"
+#include "SimpleRTPSink.hh"
+#include "TheoraVideoRTPSink.hh"
+
+////////// OggTrackTable definition /////////
+
+// For looking up and iterating over the file's tracks:
+
+class OggTrackTable {
+public:
+  OggTrackTable();
+  virtual ~OggTrackTable();
+
+  void add(OggTrack* newTrack);
+  OggTrack* lookup(u_int32_t trackNumber);
+
+  unsigned numTracks() const;
+
+private:
+  friend class OggTrackTableIterator;
+  HashTable* fTable;
+};
+
+
+////////// OggFile implementation //////////
+
+void OggFile::createNew(UsageEnvironment& env, char const* fileName,
+			onCreationFunc* onCreation, void* onCreationClientData) {
+  new OggFile(env, fileName, onCreation, onCreationClientData);
+}
+
+OggTrack* OggFile::lookup(u_int32_t trackNumber) {
+  return fTrackTable->lookup(trackNumber);
+}
+
+OggDemux* OggFile::newDemux() {
+  OggDemux* demux = new OggDemux(*this);
+  fDemuxesTable->Add((char const*)demux, demux);
+
+  return demux;
+}
+
+unsigned OggFile::numTracks() const {
+  return fTrackTable->numTracks();
+}
+
+FramedSource* OggFile
+::createSourceForStreaming(FramedSource* baseSource, u_int32_t trackNumber,
+                           unsigned& estBitrate, unsigned& numFiltersInFrontOfTrack) {
+  if (baseSource == NULL) return NULL;
+
+  FramedSource* result = baseSource; // by default
+  numFiltersInFrontOfTrack = 0; // by default
+
+  // Look at the track's MIME type to set its estimated bitrate (for use by RTCP).
+  // (Later, try to be smarter about figuring out the bitrate.) #####
+  // Some MIME types also require adding a special 'framer' in front of the source.
+  OggTrack* track = lookup(trackNumber);
+  if (track != NULL) { // should always be true
+    estBitrate = track->estBitrate;
+  }
+
+  return result;
+}
+
+RTPSink* OggFile
+::createRTPSinkForTrackNumber(u_int32_t trackNumber, Groupsock* rtpGroupsock,
+                              unsigned char rtpPayloadTypeIfDynamic) {
+  OggTrack* track = lookup(trackNumber);
+  if (track == NULL || track->mimeType == NULL) return NULL;
+
+  RTPSink* result = NULL; // default value for unknown media types
+
+  if (strcmp(track->mimeType, "audio/VORBIS") == 0) {
+    // For Vorbis audio, we use the special "identification", "comment", and "setup" headers
+    // that we read when we initially read the headers at the start of the file:
+    result = VorbisAudioRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					   track->samplingFrequency, track->numChannels,
+					   track->vtoHdrs.header[0], track->vtoHdrs.headerSize[0],
+					   track->vtoHdrs.header[1], track->vtoHdrs.headerSize[1],
+					   track->vtoHdrs.header[2], track->vtoHdrs.headerSize[2]);
+  } else if (strcmp(track->mimeType, "audio/OPUS") == 0) {
+    result = SimpleRTPSink
+      ::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+		  48000, "audio", "OPUS", 2, False/*only 1 Opus 'packet' in each RTP packet*/);
+  } else if (strcmp(track->mimeType, "video/THEORA") == 0) {
+    // For Theora video, we use the special "identification", "comment", and "setup" headers
+    // that we read when we initially read the headers at the start of the file:
+    result = TheoraVideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					   track->vtoHdrs.header[0], track->vtoHdrs.headerSize[0],
+					   track->vtoHdrs.header[1], track->vtoHdrs.headerSize[1],
+					   track->vtoHdrs.header[2], track->vtoHdrs.headerSize[2]);
+  }
+
+  return result;
+}
+
+
+OggFile::OggFile(UsageEnvironment& env, char const* fileName,
+		 onCreationFunc* onCreation, void* onCreationClientData)
+  : Medium(env),
+    fFileName(strDup(fileName)),
+    fOnCreation(onCreation), fOnCreationClientData(onCreationClientData) {
+  fTrackTable = new OggTrackTable;
+  fDemuxesTable = HashTable::create(ONE_WORD_HASH_KEYS);
+
+  FramedSource* inputSource = ByteStreamFileSource::createNew(envir(), fileName);
+  if (inputSource == NULL) {
+    // The specified input file does not exist!
+    fParserForInitialization = NULL;
+    handleEndOfBosPageParsing(); // we have no file, and thus no tracks, but we still need to signal this
+  } else {
+    // Initialize ourselves by parsing the file's headers:
+    fParserForInitialization
+      = new OggFileParser(*this, inputSource, handleEndOfBosPageParsing, this);
+  }
+}
+
+OggFile::~OggFile() {
+  delete fParserForInitialization;
+
+  // Delete any outstanding "OggDemux"s, and the table for them:
+  OggDemux* demux;
+  while ((demux = (OggDemux*)fDemuxesTable->RemoveNext()) != NULL) {
+    delete demux;
+  }
+  delete fDemuxesTable;
+  delete fTrackTable;
+
+  delete[] (char*)fFileName;
+}
+
+void OggFile::handleEndOfBosPageParsing(void* clientData) {
+  ((OggFile*)clientData)->handleEndOfBosPageParsing();
+}
+
+void OggFile::handleEndOfBosPageParsing() {
+  // Delete our parser, because it's done its job now:
+  delete fParserForInitialization; fParserForInitialization = NULL;
+
+  // Finally, signal our caller that we've been created and initialized:
+  if (fOnCreation != NULL) (*fOnCreation)(this, fOnCreationClientData);
+}
+
+void OggFile::addTrack(OggTrack* newTrack) {
+  fTrackTable->add(newTrack);
+}
+
+void OggFile::removeDemux(OggDemux* demux) {
+  fDemuxesTable->Remove((char const*)demux);
+}
+
+
+////////// OggTrackTable implementation /////////
+
+OggTrackTable::OggTrackTable()
+  : fTable(HashTable::create(ONE_WORD_HASH_KEYS)) {
+}
+
+OggTrackTable::~OggTrackTable() {
+  // Remove and delete all of our "OggTrack" descriptors, and the hash table itself:
+  OggTrack* track;
+  while ((track = (OggTrack*)fTable->RemoveNext()) != NULL) {
+    delete track;
+  }
+  delete fTable;
+}
+
+void OggTrackTable::add(OggTrack* newTrack) {
+  OggTrack* existingTrack
+    = (OggTrack*)fTable->Add((char const*)newTrack->trackNumber, newTrack);
+  delete existingTrack; // if any
+}
+
+OggTrack* OggTrackTable::lookup(u_int32_t trackNumber) {
+  return (OggTrack*)fTable->Lookup((char const*)trackNumber);
+}
+
+unsigned OggTrackTable::numTracks() const { return fTable->numEntries(); }
+
+OggTrackTableIterator::OggTrackTableIterator(OggTrackTable& ourTable) {
+  fIter = HashTable::Iterator::create(*(ourTable.fTable));
+}
+
+OggTrackTableIterator::~OggTrackTableIterator() {
+  delete fIter;
+}
+
+OggTrack* OggTrackTableIterator::next() {
+  char const* key;
+  return (OggTrack*)fIter->next(key);
+}
+
+
+////////// OggTrack implementation //////////
+
+OggTrack::OggTrack()
+  : trackNumber(0), mimeType(NULL),
+    samplingFrequency(48000), numChannels(2), estBitrate(100) { // default settings
+  vtoHdrs.header[0] = vtoHdrs.header[1] = vtoHdrs.header[2] = NULL;
+  vtoHdrs.headerSize[0] = vtoHdrs.headerSize[1] = vtoHdrs.headerSize[2] = 0;
+
+  vtoHdrs.vorbis_mode_count = 0;
+  vtoHdrs.vorbis_mode_blockflag = NULL;
+}
+
+OggTrack::~OggTrack() {
+  delete[] vtoHdrs.header[0]; delete[] vtoHdrs.header[1]; delete[] vtoHdrs.header[2];
+  delete[] vtoHdrs.vorbis_mode_blockflag;
+}
+
+
+///////// OggDemux implementation /////////
+
+FramedSource* OggDemux::newDemuxedTrack(u_int32_t& resultTrackNumber) {
+  OggTrack* nextTrack;
+  do {
+    nextTrack = fIter->next();
+  } while (nextTrack != NULL && nextTrack->mimeType == NULL);
+
+  if (nextTrack == NULL) { // no more tracks
+    resultTrackNumber = 0;
+    return NULL;
+  }
+
+  resultTrackNumber = nextTrack->trackNumber;
+  FramedSource* trackSource = new OggDemuxedTrack(envir(), resultTrackNumber, *this);
+  fDemuxedTracksTable->Add((char const*)resultTrackNumber, trackSource);
+  return trackSource;
+}
+
+FramedSource* OggDemux::newDemuxedTrackByTrackNumber(unsigned trackNumber) {
+  if (trackNumber == 0) return NULL;
+
+  FramedSource* trackSource = new OggDemuxedTrack(envir(), trackNumber, *this);
+  fDemuxedTracksTable->Add((char const*)trackNumber, trackSource);
+  return trackSource;
+}
+
+OggDemuxedTrack* OggDemux::lookupDemuxedTrack(u_int32_t trackNumber) {
+  return (OggDemuxedTrack*)fDemuxedTracksTable->Lookup((char const*)trackNumber);
+}
+
+OggDemux::OggDemux(OggFile& ourFile)
+  : Medium(ourFile.envir()),
+    fOurFile(ourFile), fDemuxedTracksTable(HashTable::create(ONE_WORD_HASH_KEYS)),
+    fIter(new OggTrackTableIterator(*fOurFile.fTrackTable)) {
+  FramedSource* fileSource = ByteStreamFileSource::createNew(envir(), ourFile.fileName());
+  fOurParser = new OggFileParser(ourFile, fileSource, handleEndOfFile, this, this);
+}
+
+OggDemux::~OggDemux() {
+  // Begin by acting as if we've reached the end of the source file.
+  // This should cause all of our demuxed tracks to get closed.
+  handleEndOfFile();
+
+  // Then delete our table of "OggDemuxedTrack"s
+  // - but not the "OggDemuxedTrack"s themselves; that should have already happened:
+  delete fDemuxedTracksTable;
+
+  delete fIter;
+  delete fOurParser;
+  fOurFile.removeDemux(this);
+}
+
+void OggDemux::removeTrack(u_int32_t trackNumber) {
+  fDemuxedTracksTable->Remove((char const*)trackNumber);
+  if (fDemuxedTracksTable->numEntries() == 0) {
+    // We no longer have any demuxed tracks, so delete ourselves now:
+    delete this;
+  }
+}
+
+void OggDemux::continueReading() {
+  fOurParser->continueParsing();
+}
+
+void OggDemux::handleEndOfFile(void* clientData) {
+  ((OggDemux*)clientData)->handleEndOfFile();
+}
+
+void OggDemux::handleEndOfFile() {
+  // Iterate through all of our 'demuxed tracks', handling 'end of input' on each one.
+  // Hack: Because this can cause the hash table to get modified underneath us,
+  // we don't call the handlers until after we've first iterated through all of the tracks.
+  unsigned numTracks = fDemuxedTracksTable->numEntries();
+  if (numTracks == 0) return;
+  OggDemuxedTrack** tracks = new OggDemuxedTrack*[numTracks];
+
+  HashTable::Iterator* iter = HashTable::Iterator::create(*fDemuxedTracksTable);
+  unsigned i;
+  char const* trackNumber;
+
+  for (i = 0; i < numTracks; ++i) {
+    tracks[i] = (OggDemuxedTrack*)iter->next(trackNumber);
+  }
+  delete iter;
+
+  for (i = 0; i < numTracks; ++i) {
+    if (tracks[i] == NULL) continue; // sanity check; shouldn't happen
+    tracks[i]->handleClosure();
+  }
+
+  delete[] tracks;
+}
diff --git a/liveMedia/OggFileParser.cpp b/liveMedia/OggFileParser.cpp
new file mode 100644
index 0000000..7d02a80
--- /dev/null
+++ b/liveMedia/OggFileParser.cpp
@@ -0,0 +1,1032 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A parser for an Ogg file.
+// Implementation
+
+#include "OggFileParser.hh"
+#include "OggDemuxedTrack.hh"
+#include <GroupsockHelper.hh> // for "gettimeofday()
+
+PacketSizeTable::PacketSizeTable(unsigned number_page_segments)
+  : numCompletedPackets(0), totSizes(0), nextPacketNumToDeliver(0),
+    lastPacketIsIncomplete(False) {
+  size = new unsigned[number_page_segments];
+  for (unsigned i = 0; i < number_page_segments; ++i) size[i] = 0;
+}
+
+PacketSizeTable::~PacketSizeTable() {
+  delete[] size;
+}
+
+OggFileParser::OggFileParser(OggFile& ourFile, FramedSource* inputSource,
+			     FramedSource::onCloseFunc* onEndFunc, void* onEndClientData,
+			     OggDemux* ourDemux)
+  : StreamParser(inputSource, onEndFunc, onEndClientData, continueParsing, this),
+    fOurFile(ourFile), fInputSource(inputSource),
+    fOnEndFunc(onEndFunc), fOnEndClientData(onEndClientData),
+    fOurDemux(ourDemux), fNumUnfulfilledTracks(0),
+    fPacketSizeTable(NULL), fCurrentTrackNumber(0), fSavedPacket(NULL) {
+  if (ourDemux == NULL) {
+    // Initialization
+    fCurrentParseState = PARSING_START_OF_FILE;
+    continueParsing();
+  } else {
+    fCurrentParseState = PARSING_AND_DELIVERING_PAGES;
+    // In this case, parsing (of page data) doesn't start until a client starts reading from a track.
+  }
+}
+
+OggFileParser::~OggFileParser() {
+  delete[] fSavedPacket;
+  delete fPacketSizeTable;
+  Medium::close(fInputSource);
+}
+
+void OggFileParser::continueParsing(void* clientData, unsigned char* ptr, unsigned size, struct timeval presentationTime) {
+  ((OggFileParser*)clientData)->continueParsing();
+}
+
+void OggFileParser::continueParsing() {
+  if (fInputSource != NULL) {
+    if (fInputSource->isCurrentlyAwaitingData()) return;
+        // Our input source is currently being read. Wait until that read completes
+
+    if (!parse()) {
+      // We didn't complete the parsing, because we had to read more data from the source,
+      // or because we're waiting for another read from downstream.
+      // Once that happens, we'll get called again.
+      return;
+    }
+  }
+
+  // We successfully parsed the file.  Call our 'done' function now:
+  if (fOnEndFunc != NULL) (*fOnEndFunc)(fOnEndClientData);
+}
+
+Boolean OggFileParser::parse() {
+  try {
+    while (1) {
+      switch (fCurrentParseState) {
+        case PARSING_START_OF_FILE: {
+	  if (parseStartOfFile()) return True;
+	}
+        case PARSING_AND_DELIVERING_PAGES: {
+	  parseAndDeliverPages();
+        }
+        case DELIVERING_PACKET_WITHIN_PAGE: {
+	  if (deliverPacketWithinPage()) return False;
+	}
+      }
+    }
+  } catch (int /*e*/) {
+#ifdef DEBUG
+    fprintf(stderr, "OggFileParser::parse() EXCEPTION (This is normal behavior - *not* an error)\n");
+#endif
+    return False; // the parsing got interrupted
+  }
+}
+
+Boolean OggFileParser::parseStartOfFile() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing start of file\n");
+#endif
+  // Read and parse each 'page', until we see the first non-BOS page, or until we have
+  // collected all required headers for Vorbis, Theora, or Opus track(s) (if any).
+  u_int8_t header_type_flag;
+  do {
+    header_type_flag = parseInitialPage();
+  } while ((header_type_flag&0x02) != 0 || needHeaders());
+  
+#ifdef DEBUG
+  fprintf(stderr, "Finished parsing start of file\n");
+#endif
+  return True;
+}
+
+static u_int32_t byteSwap(u_int32_t x) {
+  return (x<<24)|((x<<8)&0x00FF0000)|((x>>8)&0x0000FF00)|(x>>24);
+}
+
+u_int8_t OggFileParser::parseInitialPage() {
+  u_int8_t header_type_flag;
+  u_int32_t bitstream_serial_number;
+  parseStartOfPage(header_type_flag, bitstream_serial_number);
+
+  // If this is a BOS page, examine the first 8 bytes of the first 'packet', to see whether
+  // the track data type is one that we know how to stream:
+  OggTrack* track;
+  if ((header_type_flag&0x02) != 0) { // BOS
+    char const* mimeType = NULL; // if unknown
+    if (fPacketSizeTable != NULL && fPacketSizeTable->size[0] >= 8) { // sanity check
+      char buf[8];
+      testBytes((u_int8_t*)buf, 8);
+
+      if (strncmp(&buf[1], "vorbis", 6) == 0) {
+	mimeType = "audio/VORBIS";
+	++fNumUnfulfilledTracks;
+      } else if (strncmp(buf, "OpusHead", 8) == 0) {
+	mimeType = "audio/OPUS";
+	++fNumUnfulfilledTracks;
+      } else if (strncmp(&buf[1], "theora", 6) == 0) {
+	mimeType = "video/THEORA";
+	++fNumUnfulfilledTracks;
+      }
+    }
+
+    // Add a new track descriptor for this track:
+    track = new OggTrack;
+    track->trackNumber = bitstream_serial_number;
+    track->mimeType = mimeType;
+    fOurFile.addTrack(track);
+  } else { // not a BOS page
+    // Because this is not a BOS page, the specified track should already have been seen:
+    track = fOurFile.lookup(bitstream_serial_number);
+  }
+
+  if (track != NULL) { // sanity check
+#ifdef DEBUG
+    fprintf(stderr, "This track's MIME type: %s\n",
+	    track->mimeType == NULL ? "(unknown)" : track->mimeType);
+#endif
+    if (track->mimeType != NULL &&
+	(strcmp(track->mimeType, "audio/VORBIS") == 0 ||
+	 strcmp(track->mimeType, "video/THEORA") == 0 ||
+	 strcmp(track->mimeType, "audio/OPUS") == 0)) {
+      // Special-case handling of Vorbis, Theora, or Opus tracks:
+      // Make a copy of each packet, until we get the three special headers that we need:
+      Boolean isVorbis = strcmp(track->mimeType, "audio/VORBIS") == 0;
+      Boolean isTheora = strcmp(track->mimeType, "video/THEORA") == 0;
+
+      for (unsigned j = 0; j < fPacketSizeTable->numCompletedPackets && track->weNeedHeaders(); ++j) {
+	unsigned const packetSize = fPacketSizeTable->size[j];
+	if (packetSize == 0) continue; // sanity check
+
+	delete[] fSavedPacket/*if any*/; fSavedPacket = new u_int8_t[packetSize];
+	getBytes(fSavedPacket, packetSize);
+	fPacketSizeTable->totSizes -= packetSize;
+
+	// The start of the packet tells us whether its a header that we know about:
+	Boolean headerIsKnown = False;
+	unsigned index = 0;
+	if (isVorbis) {
+	  u_int8_t const firstByte = fSavedPacket[0];
+
+	  headerIsKnown = firstByte == 1 || firstByte == 3 || firstByte == 5;
+	  index = (firstByte-1)/2; // 1, 3, or 5 => 0, 1, or 2
+	} else if (isTheora) {
+	  u_int8_t const firstByte = fSavedPacket[0];
+
+	  headerIsKnown = firstByte == 0x80 || firstByte == 0x81 || firstByte == 0x82;
+	  index = firstByte &~0x80; // 0x80, 0x81, or 0x82 => 0, 1, or 2
+	} else { // Opus
+	  if (strncmp((char const*)fSavedPacket, "OpusHead", 8) == 0) {
+	    headerIsKnown = True;
+	    index = 0; // "identification" header
+	  } else if (strncmp((char const*)fSavedPacket, "OpusTags", 8) == 0) {
+	    headerIsKnown = True;
+	    index = 1; // "comment" header
+	  }
+	}
+	if (headerIsKnown) {
+#ifdef DEBUG
+	  char const* headerName[3] = { "identification", "comment", "setup" };
+	  fprintf(stderr, "Saved %d-byte %s \"%s\" header\n", packetSize, track->mimeType,
+		  headerName[index]);
+#endif
+	  // This is a header, but first check it for validity:
+	  if (!validateHeader(track, fSavedPacket, packetSize)) continue;
+
+	  // Save this header (deleting any old header of the same type that we'd saved before)
+	  delete[] track->vtoHdrs.header[index];
+	  track->vtoHdrs.header[index] = fSavedPacket;
+	  fSavedPacket = NULL;
+	  track->vtoHdrs.headerSize[index] = packetSize;
+
+	  if (!track->weNeedHeaders()) {
+	    // We now have all of the needed Vorbis, Theora, or Opus headers for this track:
+	    --fNumUnfulfilledTracks;
+	  }
+	  // Note: The above code won't work if a required header is fragmented over
+	  // more than one 'page'.  We assume that that won't ever happen...
+	}
+      }
+    }
+  }
+
+  // Skip over any remaining packet data bytes:
+  if (fPacketSizeTable->totSizes > 0) {
+#ifdef DEBUG
+    fprintf(stderr, "Skipping %d remaining packet data bytes\n", fPacketSizeTable->totSizes);
+#endif
+    skipBytes(fPacketSizeTable->totSizes);
+  }
+
+  return header_type_flag;
+}
+
+// A simple bit vector class for reading bits in little-endian order.
+// (We can't use our usual "BitVector" class, because that's big-endian.)
+class LEBitVector {
+public:
+  LEBitVector(u_int8_t const* p, unsigned numBytes)
+    : fPtr(p), fEnd(&p[numBytes]), fNumBitsRemainingInCurrentByte(8) {
+  }
+
+  u_int32_t getBits(unsigned numBits/*<=32*/) {
+    if (noMoreBits()) {
+      return 0;
+    } else if (numBits == fNumBitsRemainingInCurrentByte) {
+      u_int32_t result = (*fPtr++)>>(8-fNumBitsRemainingInCurrentByte);
+      fNumBitsRemainingInCurrentByte = 8;
+
+      return result;
+    } else if (numBits < fNumBitsRemainingInCurrentByte) {
+      u_int8_t mask = 0xFF>>(8-numBits);
+      u_int32_t result = ((*fPtr)>>(8-fNumBitsRemainingInCurrentByte)) & mask;
+      fNumBitsRemainingInCurrentByte -= numBits;
+
+      return result;
+    } else { // numBits > fNumBitsRemainingInCurrentByte
+      // Do two recursive calls to get the result:
+      unsigned nbr = fNumBitsRemainingInCurrentByte;
+      u_int32_t firstBits = getBits(nbr);
+      u_int32_t nextBits = getBits(numBits - nbr);
+
+      return (nextBits<<nbr) | firstBits;
+    }
+  }
+
+  void skipBits(unsigned numBits) {
+    while (numBits > 32) {
+      (void)getBits(32);
+      numBits -= 32;
+    }
+    (void)getBits(numBits);
+  }
+
+  unsigned numBitsRemaining() { return (fEnd-fPtr-1)*8 + fNumBitsRemainingInCurrentByte; }
+  Boolean noMoreBits() const { return fPtr >= fEnd; }
+
+private:
+  u_int8_t const* fPtr;
+  u_int8_t const* fEnd;
+  unsigned fNumBitsRemainingInCurrentByte; // 1..8
+};
+
+static unsigned ilog(int n) {
+  if (n < 0) return 0;
+
+  unsigned x = (unsigned)n;
+  unsigned result = 0;
+
+  while (x > 0) {
+    ++result;
+    x >>= 1;
+  }
+
+  return result;
+}
+
+static unsigned lookup1_values(unsigned codebook_entries, unsigned codebook_dimensions) {
+  // "the greatest integer value for which [return_value] to the power of [codebook_dimensions]
+  //  is less than or equal to [codebook_entries]"
+  unsigned return_value = 0;
+  unsigned powerValue;
+
+  do {
+    ++return_value;
+    // Compute powerValue = return_value ** codebook_dimensions
+    if (return_value == 1) powerValue = 1; // optimization
+    else {
+      powerValue = 1;
+      for (unsigned i = 0; i < codebook_dimensions; ++i) {
+	powerValue *= return_value;
+      }
+    }
+  } while (powerValue <= codebook_entries);
+  return_value -= 1;
+
+  return return_value;
+}
+
+static Boolean parseVorbisSetup_codebook(LEBitVector& bv) {
+  if (bv.noMoreBits()) return False;
+
+  unsigned sync = bv.getBits(24);
+  if (sync != 0x564342) return False;
+  unsigned codebook_dimensions = bv.getBits(16);
+  unsigned codebook_entries = bv.getBits(24);
+  unsigned ordered = bv.getBits(1);
+#ifdef DEBUG_SETUP_HEADER
+  fprintf(stderr, "\t\t\tcodebook_dimensions: %d; codebook_entries: %d, ordered: %d\n",
+	  codebook_dimensions, codebook_entries, ordered);
+#endif
+  if (!ordered) {
+    unsigned sparse = bv.getBits(1);
+#ifdef DEBUG_SETUP_HEADER
+    fprintf(stderr, "\t\t\t!ordered: sparse %d\n", sparse);
+#endif
+    for (unsigned i = 0; i < codebook_entries; ++i) {
+      unsigned codewordLength;
+
+      if (sparse) {
+	unsigned flag = bv.getBits(1);
+	if (flag) {
+	  codewordLength = bv.getBits(5) + 1;
+	} else {
+	  codewordLength = 0;
+	}
+      } else {
+	codewordLength = bv.getBits(5) + 1;
+      }
+#ifdef DEBUG_SETUP_HEADER
+      fprintf(stderr, "\t\t\t\tcodeword length[%d]:\t%d\n", i, codewordLength);
+#else
+      codewordLength = codewordLength; // to prevent compiler warning
+#endif
+    }
+  } else { // ordered
+#ifdef DEBUG_SETUP_HEADER
+    fprintf(stderr, "\t\t\tordered:\n");
+#endif
+    unsigned current_entry = 0;
+    unsigned current_length = bv.getBits(5) + 1;
+    do {
+      unsigned number = bv.getBits(ilog(codebook_entries - current_entry));
+#ifdef DEBUG_SETUP_HEADER
+      fprintf(stderr, "\t\t\t\tcodeword length[%d..%d]:\t%d\n",
+	      current_entry, current_entry + number - 1, current_length);
+#endif
+      current_entry += number;
+      if (current_entry > codebook_entries) {
+	fprintf(stderr, "Vorbis codebook parsing error: current_entry %d > codebook_entries %d!\n", current_entry, codebook_entries);
+	return False;
+      }
+      ++current_length;
+    } while (current_entry < codebook_entries);
+  }
+
+  unsigned codebook_lookup_type = bv.getBits(4);
+#ifdef DEBUG_SETUP_HEADER
+  fprintf(stderr, "\t\t\tcodebook_lookup_type: %d\n", codebook_lookup_type);
+#endif
+  if (codebook_lookup_type > 2) {
+    fprintf(stderr, "Vorbis codebook parsing error: codebook_lookup_type %d!\n", codebook_lookup_type);
+    return False;
+  } else if (codebook_lookup_type > 0) { // 1 or 2
+    bv.skipBits(32+32); // "codebook_minimum_value" and "codebook_delta_value"
+    unsigned codebook_value_bits = bv.getBits(4) + 1;
+    bv.skipBits(1); // "codebook_lookup_p"
+    unsigned codebook_lookup_values;
+    if (codebook_lookup_type == 1) {
+      codebook_lookup_values = lookup1_values(codebook_entries, codebook_dimensions);
+    } else { // 2
+      codebook_lookup_values = codebook_entries*codebook_dimensions;
+    }
+
+    bv.skipBits(codebook_lookup_values*codebook_value_bits); // "codebook_multiplicands"
+  }
+
+  return True;
+}
+
+static Boolean parseVorbisSetup_codebooks(LEBitVector& bv) {
+  if (bv.noMoreBits()) return False;
+
+  unsigned vorbis_codebook_count = bv.getBits(8) + 1;
+#ifdef DEBUG_SETUP_HEADER
+  fprintf(stderr, "\tCodebooks: vorbis_codebook_count: %d\n", vorbis_codebook_count);
+#endif
+  for (unsigned i = 0; i < vorbis_codebook_count; ++i) {
+#ifdef DEBUG_SETUP_HEADER
+    fprintf(stderr, "\t\tCodebook %d:\n", i);
+#endif
+    if (!parseVorbisSetup_codebook(bv)) return False;
+  }
+
+  return True;
+}
+
+static Boolean parseVorbisSetup_timeDomainTransforms(LEBitVector& bv) {
+  if (bv.noMoreBits()) return False;
+
+  unsigned vorbis_time_count = bv.getBits(6) + 1;
+#ifdef DEBUG_SETUP_HEADER
+  fprintf(stderr, "\tTime domain transforms: vorbis_time_count: %d\n", vorbis_time_count);
+#endif
+  for (unsigned i = 0; i < vorbis_time_count; ++i) {
+    unsigned val = bv.getBits(16);
+    if (val != 0) {
+      fprintf(stderr, "Vorbis Time domain transforms, read non-zero value %d\n", val);
+      return False;
+    }
+  }
+
+  return True;
+}
+
+static Boolean parseVorbisSetup_floors(LEBitVector& bv) {
+  if (bv.noMoreBits()) return False;
+
+  unsigned vorbis_floor_count = bv.getBits(6) + 1;
+#ifdef DEBUG_SETUP_HEADER
+  fprintf(stderr, "\tFloors: vorbis_floor_count: %d\n", vorbis_floor_count);
+#endif
+  for (unsigned i = 0; i < vorbis_floor_count; ++i) {
+    unsigned floorType = bv.getBits(16);
+    if (floorType == 0) {
+      bv.skipBits(8+16+16+6+8);
+      unsigned floor0_number_of_books = bv.getBits(4) + 1;
+      bv.skipBits(floor0_number_of_books*8);
+    } else if (floorType == 1) {
+      unsigned floor1_partitions = bv.getBits(5);
+
+      unsigned* floor1_partition_class_list = new unsigned[floor1_partitions];
+      unsigned maximum_class = 0, j;
+      for (j = 0; j < floor1_partitions; ++j) {
+	floor1_partition_class_list[j] = bv.getBits(4);
+	if (floor1_partition_class_list[j] > maximum_class) maximum_class = floor1_partition_class_list[j];
+      }
+
+      unsigned* floor1_class_dimensions = new unsigned[maximum_class + 1];
+      for (j = 0; j <= maximum_class; ++j) {
+	floor1_class_dimensions[j] = bv.getBits(3) + 1;
+	unsigned floor1_class_subclasses = bv.getBits(2);
+	if (floor1_class_subclasses != 0) {
+	  bv.skipBits(8); // "floor1_class_masterbooks[j]"
+	}
+
+	unsigned twoExp_floor1_class_subclasses = 1 << floor1_class_subclasses;
+	bv.skipBits(twoExp_floor1_class_subclasses*8); // "floor1_subclass_books[j][*]"
+      }
+
+      bv.skipBits(2); // "floor1_multiplier"
+      unsigned rangebits = bv.getBits(4);
+      for (j = 0; j < floor1_partitions; ++j) {
+	unsigned current_class_number = floor1_partition_class_list[j];
+	bv.skipBits(floor1_class_dimensions[current_class_number] * rangebits);
+      }
+
+      delete[] floor1_partition_class_list;
+      delete[] floor1_class_dimensions;
+    } else { // floorType > 1
+      fprintf(stderr, "Vorbis Floors, read bad floor type %d\n", floorType);
+      return False;
+    }
+  }
+
+  return True;
+}
+
+static Boolean parseVorbisSetup_residues(LEBitVector& bv) {
+  if (bv.noMoreBits()) return False;
+
+  unsigned vorbis_residue_count = bv.getBits(6) + 1;
+#ifdef DEBUG_SETUP_HEADER
+  fprintf(stderr, "\tResidues: vorbis_residue_count: %d\n", vorbis_residue_count);
+#endif
+  for (unsigned i = 0; i < vorbis_residue_count; ++i) {
+    unsigned vorbis_residue_type = bv.getBits(16);
+    if (vorbis_residue_type > 2) {
+      fprintf(stderr, "Vorbis Residues, read bad vorbis_residue_type: %d\n", vorbis_residue_type);
+      return False;
+    } else {
+      bv.skipBits(24+24+24); // "residue_begin", "residue_end", "residue_partition_size"
+      unsigned residue_classifications = bv.getBits(6) + 1;
+      bv.skipBits(8); // "residue_classbook"
+
+      u_int8_t* residue_cascade = new u_int8_t[residue_classifications];
+      unsigned j;
+      for (j = 0; j < residue_classifications; ++j) {
+	u_int8_t high_bits = 0;
+	u_int8_t low_bits = bv.getBits(3);
+	unsigned bitflag = bv.getBits(1);
+	if (bitflag) {
+	  high_bits = bv.getBits(5);
+	}
+
+	residue_cascade[j] = (high_bits<<3) | low_bits;
+      }
+
+      for (j = 0; j < residue_classifications; ++j) {
+	u_int8_t const cascade = residue_cascade[j];
+	u_int8_t mask = 0x80;
+	while (mask != 0) {
+	  if ((cascade&mask) != 0) bv.skipBits(8); // "residue_books[j][*]"
+	  mask >>= 1;
+	}
+      }
+
+      delete[] residue_cascade;
+    }
+  }
+
+  return True;
+}
+
+static Boolean parseVorbisSetup_mappings(LEBitVector& bv, unsigned audio_channels) {
+  if (bv.noMoreBits()) return False;
+
+  unsigned vorbis_mapping_count = bv.getBits(6) + 1;
+#ifdef DEBUG_SETUP_HEADER
+  fprintf(stderr, "\tMappings: vorbis_mapping_count: %d\n", vorbis_mapping_count);
+#endif
+  for (unsigned i = 0; i < vorbis_mapping_count; ++i) {
+    unsigned vorbis_mapping_type = bv.getBits(16);
+    if (vorbis_mapping_type != 0) {
+      fprintf(stderr, "Vorbis Mappings, read bad vorbis_mapping_type: %d\n", vorbis_mapping_type);
+      return False;
+    }
+
+    unsigned vorbis_mapping_submaps = 1;
+    if (bv.getBits(1)) vorbis_mapping_submaps = bv.getBits(4) + 1;
+
+    if (bv.getBits(1)) { // "square polar channel mapping is in use"
+      unsigned vorbis_mapping_coupling_steps = bv.getBits(8) + 1;
+
+      for (unsigned j = 0; j < vorbis_mapping_coupling_steps; ++j) {
+	unsigned ilog_audio_channels_minus_1 = ilog(audio_channels - 1);
+	bv.skipBits(2*ilog_audio_channels_minus_1); // "vorbis_mapping_magnitude", "vorbis_mapping_angle"
+      }
+    }
+
+    unsigned reserved = bv.getBits(2);
+    if (reserved != 0) {
+      fprintf(stderr, "Vorbis Mappings, read bad 'reserved' field\n");
+      return False;
+    }
+
+    if (vorbis_mapping_submaps > 1) {
+      for (unsigned j = 0; j < audio_channels; ++j) {
+	unsigned vorbis_mapping_mux = bv.getBits(4);
+
+	fprintf(stderr, "\t\t\t\tvorbis_mapping_mux[%d]: %d\n", j, vorbis_mapping_mux);
+	if (vorbis_mapping_mux >= vorbis_mapping_submaps) {
+	  fprintf(stderr, "Vorbis Mappings, read bad \"vorbis_mapping_mux\" %d (>= \"vorbis_mapping_submaps\" %d)\n", vorbis_mapping_mux, vorbis_mapping_submaps);
+	  return False;
+	}
+      }
+    }
+
+    bv.skipBits(vorbis_mapping_submaps*(8+8+8)); // "the floor and residue numbers"
+  }
+
+  return True;
+}
+
+static Boolean parseVorbisSetup_modes(LEBitVector& bv, OggTrack* track) {
+  if (bv.noMoreBits()) return False;
+
+  unsigned vorbis_mode_count = bv.getBits(6) + 1;
+  unsigned ilog_vorbis_mode_count_minus_1 = ilog(vorbis_mode_count - 1);
+#ifdef DEBUG_SETUP_HEADER
+  fprintf(stderr, "\tModes: vorbis_mode_count: %d (ilog(%d-1):%d)\n",
+	  vorbis_mode_count, vorbis_mode_count, ilog_vorbis_mode_count_minus_1);
+#endif
+  track->vtoHdrs.vorbis_mode_count = vorbis_mode_count;
+  track->vtoHdrs.ilog_vorbis_mode_count_minus_1 = ilog_vorbis_mode_count_minus_1;
+  track->vtoHdrs.vorbis_mode_blockflag = new u_int8_t[vorbis_mode_count];
+
+  for (unsigned i = 0; i < vorbis_mode_count; ++i) {
+    track->vtoHdrs.vorbis_mode_blockflag[i] = (u_int8_t)bv.getBits(1);
+#ifdef DEBUG_SETUP_HEADER
+    fprintf(stderr, "\t\tMode %d: vorbis_mode_blockflag: %d\n", i, track->vtoHdrs.vorbis_mode_blockflag[i]);
+#endif
+    bv.skipBits(16+16+8); // "vorbis_mode_windowtype", "vorbis_mode_transformtype", "vorbis_mode_mapping"
+  }
+
+  return True;
+}
+
+static Boolean parseVorbisSetupHeader(OggTrack* track, u_int8_t const* p, unsigned headerSize) {
+  LEBitVector bv(p, headerSize);
+  do {
+    if (!parseVorbisSetup_codebooks(bv)) break;
+    if (!parseVorbisSetup_timeDomainTransforms(bv)) break;
+    if (!parseVorbisSetup_floors(bv)) break;
+    if (!parseVorbisSetup_residues(bv)) break;
+    if (!parseVorbisSetup_mappings(bv, track->numChannels)) break;
+    if (!parseVorbisSetup_modes(bv, track)) break;
+    unsigned framingFlag = bv.getBits(1);
+    if (framingFlag == 0) {
+      fprintf(stderr, "Vorbis \"setup\" header did not end with a 'framing flag'!\n");
+      break;
+    }
+
+    return True;
+  } while (0);
+
+  // An error occurred:
+  return False;
+}
+
+#ifdef DEBUG
+#define CHECK_PTR if (p >= pEnd) return False
+#define printComment(p, len) do { for (unsigned k = 0; k < len; ++k) { CHECK_PTR; fprintf(stderr, "%c", *p++); } } while (0)
+#endif
+
+static Boolean validateCommentHeader(u_int8_t const *p, unsigned headerSize,
+				     unsigned isOpus = 0) {
+  if (headerSize < 15+isOpus) { // need 7+isOpus + 4(vendor_length) + 4(user_comment_list_length)
+    fprintf(stderr, "\"comment\" header is too short (%d bytes)\n", headerSize);
+    return False;
+  }
+      
+#ifdef DEBUG
+  u_int8_t const* pEnd = &p[headerSize];
+  p += 7+isOpus;
+
+  u_int32_t vendor_length = (p[3]<<24)|(p[2]<<16)|(p[1]<<8)|p[0]; p += 4;
+  fprintf(stderr, "\tvendor_string:");
+  printComment(p, vendor_length);
+  fprintf(stderr, "\n");
+  
+  u_int32_t user_comment_list_length = (p[3]<<24)|(p[2]<<16)|(p[1]<<8)|p[0]; p += 4;
+  for (unsigned i = 0; i < user_comment_list_length; ++i) {
+    CHECK_PTR; u_int32_t length = (p[3]<<24)|(p[2]<<16)|(p[1]<<8)|p[0]; p += 4;
+    fprintf(stderr, "\tuser_comment[%d]:", i);
+    printComment(p, length);
+    fprintf(stderr, "\n");
+  }
+#endif
+
+  return True;
+}
+
+static unsigned blocksizeFromExponent(unsigned exponent) {
+  unsigned result = 1;
+  for (unsigned i = 0; i < exponent; ++i) result = 2*result;
+  return result;
+}
+
+Boolean OggFileParser::validateHeader(OggTrack* track, u_int8_t const* p, unsigned headerSize) {
+  // Assert: headerSize >= 7 (because we've already checked "<packet_type>XXXXXX" or "OpusXXXX")
+  if (strcmp(track->mimeType, "audio/VORBIS") == 0) {
+    u_int8_t const firstByte = p[0]; 
+
+    if (firstByte == 1) { // "identification" header
+      if (headerSize < 30) {
+	fprintf(stderr, "Vorbis \"identification\" header is too short (%d bytes)\n", headerSize);
+	return False;
+      } else if ((p[29]&0x1) != 1) {
+	fprintf(stderr, "Vorbis \"identification\" header: 'framing_flag' is not set\n");
+	return False;
+      }
+      
+      p += 7;
+      u_int32_t vorbis_version = (p[3]<<24)|(p[2]<<16)|(p[1]<<8)|p[0]; p += 4;
+      if (vorbis_version != 0) {
+	fprintf(stderr, "Vorbis \"identification\" header has a bad 'vorbis_version': 0x%08x\n", vorbis_version);
+	return False;
+      }
+      
+      u_int8_t audio_channels = *p++;
+      if (audio_channels == 0) {
+	fprintf(stderr, "Vorbis \"identification\" header: 'audio_channels' is 0!\n");
+	return False;
+      }
+      track->numChannels = audio_channels;
+      
+      u_int32_t audio_sample_rate = (p[3]<<24)|(p[2]<<16)|(p[1]<<8)|p[0]; p += 4;
+      if (audio_sample_rate == 0) {
+	fprintf(stderr, "Vorbis \"identification\" header: 'audio_sample_rate' is 0!\n");
+	return False;
+      }
+      track->samplingFrequency = audio_sample_rate;
+      
+      p += 4; // skip over 'bitrate_maximum'
+      u_int32_t bitrate_nominal = (p[3]<<24)|(p[2]<<16)|(p[1]<<8)|p[0]; p += 4;
+      if (bitrate_nominal > 0) track->estBitrate = (bitrate_nominal+500)/1000; // round
+      
+      p += 4; // skip over 'bitrate_maximum'
+      
+      // Note the two 'block sizes' (samples per packet), and their durations in microseconds:
+      u_int8_t blocksizeBits = *p++;
+      unsigned& blocksize_0 = track->vtoHdrs.blocksize[0]; // alias
+      unsigned& blocksize_1 = track->vtoHdrs.blocksize[1]; // alias
+      blocksize_0 = blocksizeFromExponent(blocksizeBits&0x0F);
+      blocksize_1 = blocksizeFromExponent(blocksizeBits>>4);
+      
+      double uSecsPerSample = 1000000.0/(track->samplingFrequency*2);
+          // Why the "2"?  I don't know, but it seems to be necessary
+      track->vtoHdrs.uSecsPerPacket[0] = (unsigned)(uSecsPerSample*blocksize_0);
+      track->vtoHdrs.uSecsPerPacket[1] = (unsigned)(uSecsPerSample*blocksize_1);
+#ifdef DEBUG
+      fprintf(stderr, "\t%u Hz, %u-channel, %u kbps (est), block sizes: %u,%u (%u,%u us)\n",
+	      track->samplingFrequency, track->numChannels, track->estBitrate,
+	      blocksize_0, blocksize_1,
+	      track->vtoHdrs.uSecsPerPacket[0], track->vtoHdrs.uSecsPerPacket[1]);
+#endif
+      // To be valid, "blocksize_0" must be <= "blocksize_1", and both must be in [64,8192]:
+      if (!(blocksize_0 <= blocksize_1 && blocksize_0 >= 64 && blocksize_1 <= 8192)) {
+	fprintf(stderr, "Invalid Vorbis \"blocksize_0\" (%d) and/or \"blocksize_1\" (%d)!\n",
+		blocksize_0, blocksize_1);
+	return False;
+      }
+    } else if (firstByte == 3) { // "comment" header
+      if (!validateCommentHeader(p, headerSize)) return False;
+    } else if (firstByte == 5) { // "setup" header
+      // Parse the "setup" header to get the values that we want:
+      // "vorbis_mode_count", and "vorbis_mode_blockflag" for each mode.  Unfortunately these come
+      // near the end of the header, so we have to parse lots of other crap first.
+      p += 7;
+      if (!parseVorbisSetupHeader(track, p, headerSize)) {
+	fprintf(stderr, "Failed to parse Vorbis \"setup\" header!\n");
+	return False;
+      }
+    }
+  } else if (strcmp(track->mimeType, "video/THEORA") == 0) {
+    u_int8_t const firstByte = p[0]; 
+
+    if (firstByte == 0x80) { // "identification" header
+      if (headerSize < 42) {
+	fprintf(stderr, "Theora \"identification\" header is too short (%d bytes)\n", headerSize);
+	return False;
+      } else if ((p[41]&0x7) != 0) {
+	fprintf(stderr, "Theora \"identification\" header: 'res' bits are non-zero\n");
+	return False;
+      }
+
+      track->vtoHdrs.KFGSHIFT = ((p[40]&3)<<3) | (p[41]>>5);
+      u_int32_t FRN = (p[22]<<24) | (p[23]<<16) | (p[24]<<8) | p[25]; // Frame rate numerator
+      u_int32_t FRD = (p[26]<<24) | (p[27]<<16) | (p[28]<<8) | p[29]; // Frame rate numerator
+#ifdef DEBUG
+      fprintf(stderr, "\tKFGSHIFT %d, Frame rate numerator %d, Frame rate denominator %d\n", track->vtoHdrs.KFGSHIFT, FRN, FRD);
+#endif
+      if (FRN == 0 || FRD == 0) {
+	fprintf(stderr, "Theora \"identification\" header: Bad FRN and/or FRD values: %d, %d\n", FRN, FRD);
+	return False;
+      }
+      track->vtoHdrs.uSecsPerFrame = (unsigned)((1000000.0*FRD)/FRN);
+#ifdef DEBUG
+      fprintf(stderr, "\t\t=> %u microseconds per frame\n", track->vtoHdrs.uSecsPerFrame);
+#endif
+    } else if (firstByte == 0x81) { // "comment" header
+      if (!validateCommentHeader(p, headerSize)) return False;
+    } else if (firstByte == 0x82) { // "setup" header
+      // We don't care about the contents of the Theora "setup" header; just assume it's valid
+    }
+  } else { // Opus audio
+    if (strncmp((char const*)p, "OpusHead", 8) == 0) { // "identification" header
+      // Just check the size, and the 'major' number of the version byte:
+      if (headerSize < 19 || (p[8]&0xF0) != 0) return False;
+    } else { // comment header
+      if (!validateCommentHeader(p, headerSize, 1/*isOpus*/)) return False;
+    }
+  }
+  
+  return True;
+}
+
+void OggFileParser::parseAndDeliverPages() {
+#ifdef DEBUG
+  fprintf(stderr, "parsing and delivering data\n");
+#endif
+  while (parseAndDeliverPage()) {}
+}
+
+Boolean OggFileParser::parseAndDeliverPage() {
+  u_int8_t header_type_flag;
+  u_int32_t bitstream_serial_number;
+  parseStartOfPage(header_type_flag, bitstream_serial_number);
+
+  OggDemuxedTrack* demuxedTrack = fOurDemux->lookupDemuxedTrack(bitstream_serial_number);
+  if (demuxedTrack == NULL) { // this track is not being read
+#ifdef DEBUG
+    fprintf(stderr, "\tIgnoring page from unread track; skipping %d remaining packet data bytes\n",
+	    fPacketSizeTable->totSizes);
+#endif
+    skipBytes(fPacketSizeTable->totSizes);
+    return True;
+  } else if (fPacketSizeTable->totSizes == 0) {
+    // This page is empty (has no packets).  Skip it and continue
+#ifdef DEBUG
+    fprintf(stderr, "\t[track: %s] Skipping empty page\n", demuxedTrack->MIMEtype());
+#endif
+    return True;
+  }
+
+  // Start delivering packets next:
+  demuxedTrack->fCurrentPageIsContinuation = (header_type_flag&0x01) != 0;
+  fCurrentTrackNumber = bitstream_serial_number;
+  fCurrentParseState = DELIVERING_PACKET_WITHIN_PAGE;
+  saveParserState();
+  return False;
+}
+
+Boolean OggFileParser::deliverPacketWithinPage() {
+  OggDemuxedTrack* demuxedTrack = fOurDemux->lookupDemuxedTrack(fCurrentTrackNumber);
+  if (demuxedTrack == NULL) return False; // should not happen
+
+  unsigned packetNum = fPacketSizeTable->nextPacketNumToDeliver;
+  unsigned packetSize = fPacketSizeTable->size[packetNum];
+
+  if (!demuxedTrack->isCurrentlyAwaitingData()) {
+    // Someone has been reading this stream, but isn't right now.
+    // We can't deliver this frame until he asks for it, so punt for now.
+    // The next time he asks for a frame, he'll get it.
+#ifdef DEBUG
+    fprintf(stderr, "\t[track: %s] Deferring delivery of packet %d (%d bytes%s)\n",
+	    demuxedTrack->MIMEtype(), packetNum, packetSize,
+	    packetNum == fPacketSizeTable->numCompletedPackets ? " (incomplete)" : "");
+#endif
+    return True;
+  }
+
+  // Deliver the next packet:
+#ifdef DEBUG
+  fprintf(stderr, "\t[track: %s] Delivering packet %d (%d bytes%s)\n", demuxedTrack->MIMEtype(),
+	  packetNum, packetSize,
+	  packetNum == fPacketSizeTable->numCompletedPackets ? " (incomplete)" : "");
+#endif
+  unsigned numBytesDelivered
+    = packetSize < demuxedTrack->maxSize() ? packetSize : demuxedTrack->maxSize();
+  getBytes(demuxedTrack->to(), numBytesDelivered);
+  u_int8_t firstByte = numBytesDelivered > 0 ? demuxedTrack->to()[0] : 0x00;
+  u_int8_t secondByte = numBytesDelivered > 1 ? demuxedTrack->to()[1] : 0x00;
+  demuxedTrack->to() += numBytesDelivered;
+
+  if (demuxedTrack->fCurrentPageIsContinuation) { // the previous page's read was incomplete
+    demuxedTrack->frameSize() += numBytesDelivered;
+  } else {
+    // This is the first delivery for this "doGetNextFrame()" call.
+    demuxedTrack->frameSize() = numBytesDelivered;
+  }
+  if (packetSize > demuxedTrack->maxSize()) {
+    demuxedTrack->numTruncatedBytes() += packetSize - demuxedTrack->maxSize();
+  }
+  demuxedTrack->maxSize() -= numBytesDelivered;
+
+  // Figure out the duration and presentation time of this frame.
+  unsigned durationInMicroseconds;
+  OggTrack* track = fOurFile.lookup(demuxedTrack->fOurTrackNumber);
+
+  if (strcmp(track->mimeType, "audio/VORBIS") == 0) {
+    if ((firstByte&0x01) != 0) { // This is a header packet
+      durationInMicroseconds = 0;
+    } else { // This is a data packet.
+      // Parse the first byte to figure out its duration.
+      // Extract the next "track->vtoHdrs.ilog_vorbis_mode_count_minus_1" bits of the first byte:
+      u_int8_t const mask = 0xFE<<(track->vtoHdrs.ilog_vorbis_mode_count_minus_1);
+      u_int8_t const modeNumber = (firstByte&~mask)>>1;
+      if (modeNumber >= track->vtoHdrs.vorbis_mode_count) {
+	fprintf(stderr, "Error: Bad mode number %d (>= vorbis_mode_count %d) in Vorbis packet!\n",
+		modeNumber, track->vtoHdrs.vorbis_mode_count);
+	durationInMicroseconds = 0;
+      } else {
+	unsigned blockNumber = track->vtoHdrs.vorbis_mode_blockflag[modeNumber];
+	durationInMicroseconds = track->vtoHdrs.uSecsPerPacket[blockNumber];
+      }
+    }
+  } else if (strcmp(track->mimeType, "video/THEORA") == 0) {
+    if ((firstByte&0x80) != 0) { // This is a header packet
+      durationInMicroseconds = 0;
+    } else { // This is a data packet.
+      durationInMicroseconds = track->vtoHdrs.uSecsPerFrame;
+    }
+  } else { // "audio/OPUS"
+    if (firstByte == 0x4F/*'O'*/ && secondByte == 0x70/*'p*/) { // This is a header packet
+      durationInMicroseconds = 0;
+    } else { // This is a data packet.
+      // Parse the first byte to figure out the duration of each frame, and then (if necessary)
+      // parse the second byte to figure out how many frames are in this packet:
+      u_int8_t config = firstByte >> 3;
+      u_int8_t c = firstByte & 0x03;
+      unsigned const configDuration[32] = { // in microseconds
+	10000, 20000, 40000, 60000, // config 0..3
+	10000, 20000, 40000, 60000, // config 4..7
+	10000, 20000, 40000, 60000, // config 8..11
+	10000, 20000, // config 12..13
+	10000, 20000, // config 14..15
+	2500, 5000, 10000, 20000, // config 16..19
+	2500, 5000, 10000, 20000, // config 20..23
+	2500, 5000, 10000, 20000, // config 24..27
+	2500, 5000, 10000, 20000  // config 28..31
+      };
+      unsigned const numFramesInPacket = c == 0 ? 1 : c == 3 ? (secondByte&0x3F) : 2;
+      durationInMicroseconds = numFramesInPacket*configDuration[config];
+    }
+  }
+
+  if (demuxedTrack->nextPresentationTime().tv_sec == 0 && demuxedTrack->nextPresentationTime().tv_usec == 0) {
+    // This is the first delivery.  Initialize "demuxedTrack->nextPresentationTime()":
+    gettimeofday(&demuxedTrack->nextPresentationTime(), NULL);
+  }
+  demuxedTrack->presentationTime() = demuxedTrack->nextPresentationTime();
+  demuxedTrack->durationInMicroseconds() = durationInMicroseconds;
+
+  demuxedTrack->nextPresentationTime().tv_usec += durationInMicroseconds;
+  while (demuxedTrack->nextPresentationTime().tv_usec >= 1000000) {
+    ++demuxedTrack->nextPresentationTime().tv_sec;
+    demuxedTrack->nextPresentationTime().tv_usec -= 1000000;    
+  }
+  saveParserState();
+
+  // And check whether there's a next packet in this page:
+  if (packetNum == fPacketSizeTable->numCompletedPackets) {
+    // This delivery was for an incomplete packet, at the end of the page.
+    // Return without completing delivery:
+    fCurrentParseState = PARSING_AND_DELIVERING_PAGES;
+    return False;
+  }
+ 
+  if (packetNum < fPacketSizeTable->numCompletedPackets-1
+      || fPacketSizeTable->lastPacketIsIncomplete) {
+    // There is at least one more packet (possibly incomplete) left in this packet.
+    // Deliver it next:
+    ++fPacketSizeTable->nextPacketNumToDeliver;
+  } else {
+    // Start parsing a new page next:
+    fCurrentParseState = PARSING_AND_DELIVERING_PAGES;
+  }
+  
+  FramedSource::afterGetting(demuxedTrack); // completes delivery
+  return True;
+}
+
+void OggFileParser::parseStartOfPage(u_int8_t& header_type_flag,
+				     u_int32_t& bitstream_serial_number) {
+  saveParserState();
+  // First, make sure we start with the 'capture_pattern': 0x4F676753 ('OggS'):
+  while (test4Bytes() != 0x4F676753) {
+    skipBytes(1);
+    saveParserState(); // ensures forward progress through the file
+  }
+  skipBytes(4);
+#ifdef DEBUG
+  fprintf(stderr, "\nSaw Ogg page header:\n");
+#endif
+
+  u_int8_t stream_structure_version = get1Byte();
+  if (stream_structure_version != 0) {
+    fprintf(stderr, "Saw page with unknown Ogg file version number: 0x%02x\n", stream_structure_version);
+  }
+
+  header_type_flag = get1Byte();
+#ifdef DEBUG
+  fprintf(stderr, "\theader_type_flag: 0x%02x (", header_type_flag);
+  if (header_type_flag&0x01) fprintf(stderr, "continuation ");
+  if (header_type_flag&0x02) fprintf(stderr, "bos ");
+  if (header_type_flag&0x04) fprintf(stderr, "eos ");
+  fprintf(stderr, ")\n");
+#endif  
+
+  u_int32_t granule_position1 = byteSwap(get4Bytes());
+  u_int32_t granule_position2 = byteSwap(get4Bytes());
+  bitstream_serial_number = byteSwap(get4Bytes());
+  u_int32_t page_sequence_number = byteSwap(get4Bytes());
+  u_int32_t CRC_checksum = byteSwap(get4Bytes());
+  u_int8_t number_page_segments = get1Byte();
+#ifdef DEBUG
+  fprintf(stderr, "\tgranule_position 0x%08x%08x, bitstream_serial_number 0x%08x, page_sequence_number 0x%08x, CRC_checksum 0x%08x, number_page_segments %d\n", granule_position2, granule_position1, bitstream_serial_number, page_sequence_number, CRC_checksum, number_page_segments);
+#else
+  // Dummy statements to prevent 'unused variable' compiler warnings:
+#define DUMMY_STATEMENT(x) do {x = x;} while (0)
+  DUMMY_STATEMENT(granule_position1);
+  DUMMY_STATEMENT(granule_position2);
+  DUMMY_STATEMENT(page_sequence_number);
+  DUMMY_STATEMENT(CRC_checksum);
+#endif  
+  
+  // Look at the "segment_table" to count the sizes of the packets in this page:
+  delete fPacketSizeTable/*if any*/; fPacketSizeTable = new PacketSizeTable(number_page_segments);
+  u_int8_t lacing_value = 0;
+#ifdef DEBUG
+  fprintf(stderr, "\tsegment_table\n");
+#endif
+  for (unsigned i = 0; i < number_page_segments; ++i) {
+    lacing_value = get1Byte();
+#ifdef DEBUG
+    fprintf(stderr, "\t\t%d:\t%d", i, lacing_value);
+#endif
+    fPacketSizeTable->totSizes += lacing_value;
+    fPacketSizeTable->size[fPacketSizeTable->numCompletedPackets] += lacing_value;
+    if (lacing_value < 255) {
+      // This completes a packet:
+#ifdef DEBUG
+      fprintf(stderr, " (->%d)", fPacketSizeTable->size[fPacketSizeTable->numCompletedPackets]);
+#endif
+      ++fPacketSizeTable->numCompletedPackets;
+    }
+#ifdef DEBUG
+    fprintf(stderr, "\n");
+#endif
+  }
+
+  fPacketSizeTable->lastPacketIsIncomplete = lacing_value == 255;
+}
diff --git a/liveMedia/OggFileParser.hh b/liveMedia/OggFileParser.hh
new file mode 100644
index 0000000..f25e97f
--- /dev/null
+++ b/liveMedia/OggFileParser.hh
@@ -0,0 +1,91 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A parser for an Ogg file
+// C++ header
+
+#ifndef _OGG_FILE_PARSER_HH
+
+#ifndef _STREAM_PARSER_HH
+#include "StreamParser.hh"
+#endif
+#ifndef _OGG_FILE_HH
+#include "OggFile.hh"
+#endif
+
+// An enum representing the current state of the parser:
+enum OggParseState {
+  PARSING_START_OF_FILE,
+  PARSING_AND_DELIVERING_PAGES,
+  DELIVERING_PACKET_WITHIN_PAGE
+};
+
+// A structure that counts the sizes of 'packets' given by each page's "segment_table":
+class PacketSizeTable {
+public:
+  PacketSizeTable(unsigned number_page_segments);
+  ~PacketSizeTable();
+
+  unsigned numCompletedPackets; // will be <= "number_page_segments"
+  unsigned* size; // an array of sizes of each of the packets
+  unsigned totSizes;
+  unsigned nextPacketNumToDeliver;
+  Boolean lastPacketIsIncomplete; // iff the last segment's 'lacing' was 255
+};
+
+class OggFileParser: public StreamParser {
+public:
+  OggFileParser(OggFile& ourFile, FramedSource* inputSource,
+		FramedSource::onCloseFunc* onEndFunc, void* onEndClientData,
+		OggDemux* ourDemux = NULL);
+  virtual ~OggFileParser();
+
+  // StreamParser 'client continue' function:
+  static void continueParsing(void* clientData, unsigned char* ptr, unsigned size, struct timeval presentationTime);
+  void continueParsing();
+
+private:
+  Boolean needHeaders() { return fNumUnfulfilledTracks > 0; }
+
+  // Parsing functions:
+  Boolean parse(); // returns True iff we have finished parsing all BOS pages (on initialization)
+
+  Boolean parseStartOfFile();
+  u_int8_t parseInitialPage(); // returns the 'header_type_flag' byte
+  void parseAndDeliverPages();
+  Boolean parseAndDeliverPage();
+  Boolean deliverPacketWithinPage();
+  void parseStartOfPage(u_int8_t& header_type_flag, u_int32_t& bitstream_serial_number);
+
+  Boolean validateHeader(OggTrack* track, u_int8_t const* p, unsigned headerSize);
+
+private:
+  // General state for parsing:
+  OggFile& fOurFile;
+  FramedSource* fInputSource;
+  FramedSource::onCloseFunc* fOnEndFunc;
+  void* fOnEndClientData;
+  OggDemux* fOurDemux;
+  OggParseState fCurrentParseState;
+
+  unsigned fNumUnfulfilledTracks;
+  PacketSizeTable* fPacketSizeTable;
+  u_int32_t fCurrentTrackNumber;
+  u_int8_t* fSavedPacket; // used to temporarily save a copy of a 'packet' from a page
+};
+
+#endif
diff --git a/liveMedia/OggFileServerDemux.cpp b/liveMedia/OggFileServerDemux.cpp
new file mode 100644
index 0000000..a303893
--- /dev/null
+++ b/liveMedia/OggFileServerDemux.cpp
@@ -0,0 +1,109 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A server demultiplexor for a Ogg file
+// Implementation
+
+#include "OggFileServerDemux.hh"
+#include "OggFileServerMediaSubsession.hh"
+
+void OggFileServerDemux
+::createNew(UsageEnvironment& env, char const* fileName,
+	    onCreationFunc* onCreation, void* onCreationClientData) {
+  (void)new OggFileServerDemux(env, fileName,
+			       onCreation, onCreationClientData);
+}
+
+ServerMediaSubsession* OggFileServerDemux::newServerMediaSubsession() {
+  u_int32_t dummyResultTrackNumber;
+  return newServerMediaSubsession(dummyResultTrackNumber);
+}
+
+ServerMediaSubsession* OggFileServerDemux
+::newServerMediaSubsession(u_int32_t& resultTrackNumber) {
+  resultTrackNumber = 0;
+
+  OggTrack* nextTrack = fIter->next();
+  if (nextTrack == NULL) return NULL;
+
+  return newServerMediaSubsessionByTrackNumber(nextTrack->trackNumber);
+}
+
+ServerMediaSubsession* OggFileServerDemux
+::newServerMediaSubsessionByTrackNumber(u_int32_t trackNumber) {
+  OggTrack* track = fOurOggFile->lookup(trackNumber);
+  if (track == NULL) return NULL;
+
+  ServerMediaSubsession* result = OggFileServerMediaSubsession::createNew(*this, track);
+  if (result != NULL) {
+#ifdef DEBUG
+    fprintf(stderr, "Created 'ServerMediaSubsession' object for track #%d: (%s)\n", track->trackNumber, track->mimeType);
+#endif
+  }
+
+  return result;
+}
+
+FramedSource* OggFileServerDemux::newDemuxedTrack(unsigned clientSessionId, u_int32_t trackNumber) {
+  OggDemux* demuxToUse = NULL;
+
+  if (clientSessionId != 0 && clientSessionId == fLastClientSessionId) {
+    demuxToUse = fLastCreatedDemux; // use the same demultiplexor as before
+      // Note: This code relies upon the fact that the creation of streams for different
+      // client sessions do not overlap - so all demuxed tracks are created for one "OggDemux" at a time.
+      // Also, the "clientSessionId != 0" test is a hack, because 'session 0' is special; its audio and video streams
+      // are created and destroyed one-at-a-time, rather than both streams being
+      // created, and then (later) both streams being destroyed (as is the case
+      // for other ('real') session ids).  Because of this, a separate demultiplexor is used for each 'session 0' track.
+  }
+
+  if (demuxToUse == NULL) demuxToUse = fOurOggFile->newDemux();
+
+  fLastClientSessionId = clientSessionId;
+  fLastCreatedDemux = demuxToUse;
+
+  return demuxToUse->newDemuxedTrackByTrackNumber(trackNumber);
+}
+
+OggFileServerDemux
+::OggFileServerDemux(UsageEnvironment& env, char const* fileName,
+		     onCreationFunc* onCreation, void* onCreationClientData)
+  : Medium(env),
+    fFileName(fileName), fOnCreation(onCreation), fOnCreationClientData(onCreationClientData),
+    fIter(NULL/*until the OggFile is created*/),
+    fLastClientSessionId(0), fLastCreatedDemux(NULL) {
+  OggFile::createNew(env, fileName, onOggFileCreation, this);
+}
+
+OggFileServerDemux::~OggFileServerDemux() {
+  Medium::close(fOurOggFile);
+
+  delete fIter;
+}
+
+void OggFileServerDemux::onOggFileCreation(OggFile* newFile, void* clientData) {
+  ((OggFileServerDemux*)clientData)->onOggFileCreation(newFile);
+}
+
+void OggFileServerDemux::onOggFileCreation(OggFile* newFile) {
+  fOurOggFile = newFile;
+
+  fIter = new OggTrackTableIterator(fOurOggFile->trackTable());
+
+  // Now, call our own creation notification function:
+  if (fOnCreation != NULL) (*fOnCreation)(this, fOnCreationClientData);
+}
diff --git a/liveMedia/OggFileServerMediaSubsession.cpp b/liveMedia/OggFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..c5a0f98
--- /dev/null
+++ b/liveMedia/OggFileServerMediaSubsession.cpp
@@ -0,0 +1,54 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a track within an Ogg file.
+// Implementation
+
+#include "OggFileServerMediaSubsession.hh"
+#include "OggDemuxedTrack.hh"
+#include "FramedFilter.hh"
+
+OggFileServerMediaSubsession* OggFileServerMediaSubsession
+::createNew(OggFileServerDemux& demux, OggTrack* track) {
+  return new OggFileServerMediaSubsession(demux, track);
+}
+
+OggFileServerMediaSubsession
+::OggFileServerMediaSubsession(OggFileServerDemux& demux, OggTrack* track)
+  : FileServerMediaSubsession(demux.envir(), demux.fileName(), False),
+    fOurDemux(demux), fTrack(track), fNumFiltersInFrontOfTrack(0) {
+}
+
+OggFileServerMediaSubsession::~OggFileServerMediaSubsession() {
+}
+
+FramedSource* OggFileServerMediaSubsession
+::createNewStreamSource(unsigned clientSessionId, unsigned& estBitrate) {
+  FramedSource* baseSource = fOurDemux.newDemuxedTrack(clientSessionId, fTrack->trackNumber);
+  if (baseSource == NULL) return NULL;
+  
+  return fOurDemux.ourOggFile()
+    ->createSourceForStreaming(baseSource, fTrack->trackNumber,
+			       estBitrate, fNumFiltersInFrontOfTrack);
+}
+
+RTPSink* OggFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic, FramedSource* /*inputSource*/) {
+  return fOurDemux.ourOggFile()
+    ->createRTPSinkForTrackNumber(fTrack->trackNumber, rtpGroupsock, rtpPayloadTypeIfDynamic);
+}
diff --git a/liveMedia/OggFileServerMediaSubsession.hh b/liveMedia/OggFileServerMediaSubsession.hh
new file mode 100644
index 0000000..27741c9
--- /dev/null
+++ b/liveMedia/OggFileServerMediaSubsession.hh
@@ -0,0 +1,53 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a track within an Ogg file.
+// C++ header
+
+#ifndef _OGG_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _OGG_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+#ifndef _OGG_FILE_SERVER_DEMUX_HH
+#include "OggFileServerDemux.hh"
+#endif
+
+class OggFileServerMediaSubsession: public FileServerMediaSubsession {
+public:
+  static OggFileServerMediaSubsession*
+  createNew(OggFileServerDemux& demux, OggTrack* track);
+
+protected:
+  OggFileServerMediaSubsession(OggFileServerDemux& demux, OggTrack* track);
+      // called only by createNew(), or by subclass constructors
+  virtual ~OggFileServerMediaSubsession();
+
+protected: // redefined virtual functions
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic, FramedSource* inputSource);
+
+protected:
+  OggFileServerDemux& fOurDemux;
+  OggTrack* fTrack;
+  unsigned fNumFiltersInFrontOfTrack;
+};
+
+#endif
diff --git a/liveMedia/OggFileSink.cpp b/liveMedia/OggFileSink.cpp
new file mode 100644
index 0000000..dbfb1af
--- /dev/null
+++ b/liveMedia/OggFileSink.cpp
@@ -0,0 +1,274 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// 'Ogg' File Sink (recording a single media track only)
+// Implementation
+
+#include "OggFileSink.hh"
+#include "OutputFile.hh"
+#include "VorbisAudioRTPSource.hh" // for "parseVorbisOrTheoraConfigStr()"
+#include "MPEG2TransportStreamMultiplexor.hh" // for calculateCRC()
+#include "FramedSource.hh"
+
+OggFileSink* OggFileSink
+::createNew(UsageEnvironment& env, char const* fileName,
+	    unsigned samplingFrequency, char const* configStr,
+	    unsigned bufferSize, Boolean oneFilePerFrame) {
+  do {
+    FILE* fid;
+    char const* perFrameFileNamePrefix;
+    if (oneFilePerFrame) {
+      // Create the fid for each frame
+      fid = NULL;
+      perFrameFileNamePrefix = fileName;
+    } else {
+      // Normal case: create the fid once
+      fid = OpenOutputFile(env, fileName);
+      if (fid == NULL) break;
+      perFrameFileNamePrefix = NULL;
+    }
+
+    return new OggFileSink(env, fid, samplingFrequency, configStr, bufferSize, perFrameFileNamePrefix);
+  } while (0);
+
+  return NULL;
+}
+
+OggFileSink::OggFileSink(UsageEnvironment& env, FILE* fid,
+			 unsigned samplingFrequency, char const* configStr,
+			 unsigned bufferSize, char const* perFrameFileNamePrefix)
+  : FileSink(env, fid, bufferSize, perFrameFileNamePrefix),
+    fSamplingFrequency(samplingFrequency), fConfigStr(strDup(configStr)),
+    fHaveWrittenFirstFrame(False), fHaveSeenEOF(False),
+    fGranulePosition(0), fGranulePositionAdjustment(0), fPageSequenceNumber(0),
+    fIsTheora(False), fGranuleIncrementPerFrame(1),
+    fAltFrameSize(0), fAltNumTruncatedBytes(0) {
+  fAltBuffer = new unsigned char[bufferSize];
+
+  // Initialize our 'Ogg page header' array with constant values:
+  u_int8_t* p = fPageHeaderBytes;
+  *p++=0x4f; *p++=0x67; *p++=0x67; *p++=0x53; // bytes 0..3: 'capture_pattern': "OggS"
+  *p++=0; // byte 4: 'stream_structure_version': 0
+  *p++=0; // byte 5: 'header_type_flag': set on each write
+  *p++=0; *p++=0; *p++=0; *p++=0; *p++=0; *p++=0; *p++=0; *p++=0;
+      // bytes 6..13: 'granule_position': set on each write
+  *p++=1; *p++=0; *p++=0; *p++=0; // bytes 14..17: 'bitstream_serial_number': 1
+  *p++=0; *p++=0; *p++=0; *p++=0; // bytes 18..21: 'page_sequence_number': set on each write
+  *p++=0; *p++=0; *p++=0; *p++=0; // bytes 22..25: 'CRC_checksum': set on each write
+  *p=0; // byte 26: 'number_page_segments': set on each write
+}
+
+OggFileSink::~OggFileSink() {
+  // We still have the previously-arrived frame, so write it to the file before we end:
+  fHaveSeenEOF = True;
+  OggFileSink::addData(fAltBuffer, fAltFrameSize, fAltPresentationTime);
+
+  delete[] fAltBuffer;
+  delete[] (char*)fConfigStr;
+}
+
+Boolean OggFileSink::continuePlaying() {
+  // Identical to "FileSink::continuePlaying()",
+  // except that we use our own 'on source closure' function:
+  if (fSource == NULL) return False;
+
+  fSource->getNextFrame(fBuffer, fBufferSize,
+			FileSink::afterGettingFrame, this,
+			ourOnSourceClosure, this);
+  return True;
+}
+
+#define PAGE_DATA_MAX_SIZE (255*255)
+
+void OggFileSink::addData(unsigned char const* data, unsigned dataSize,
+			  struct timeval presentationTime) {
+  if (dataSize == 0) return;
+
+  // Set "fGranulePosition" for this frame:
+  if (fIsTheora) {
+    // Special case for Theora: "fGranulePosition" is supposed to be made up of a pair:
+    //   (frame count to last key frame) | (frame count since last key frame)
+    // However, because there appears to be no easy way to figure out which frames are key frames,
+    // we just assume that all frames are key frames.
+    if (!(data[0] >= 0x80 && data[0] <= 0x82)) { // for header pages, "fGranulePosition" remains 0
+      fGranulePosition += fGranuleIncrementPerFrame;
+    }
+  } else {
+    double ptDiff
+      = (presentationTime.tv_sec - fFirstPresentationTime.tv_sec)
+      + (presentationTime.tv_usec - fFirstPresentationTime.tv_usec)/1000000.0;
+    int64_t newGranulePosition
+      = (int64_t)(fSamplingFrequency*ptDiff) + fGranulePositionAdjustment;
+    if (newGranulePosition < fGranulePosition) {
+      // Update "fGranulePositionAdjustment" so that "fGranulePosition" remains monotonic
+      fGranulePositionAdjustment += fGranulePosition - newGranulePosition;
+    } else {
+      fGranulePosition = newGranulePosition;
+    }
+  }
+
+  // Write the frame to the file as a single Ogg 'page' (or perhaps as multiple pages
+  // if it's too big for a single page).  We don't aggregate more than one frame within
+  // an Ogg page because that's not legal for some headers, and because that would make
+  // it difficult for us to properly set the 'eos' (end of stream) flag on the last page.
+
+  // First, figure out how many pages to write here
+  // (a page can contain no more than PAGE_DATA_MAX_SIZE bytes)
+  unsigned numPagesToWrite = dataSize/PAGE_DATA_MAX_SIZE + 1;
+      // Note that if "dataSize" is a integral multiple of PAGE_DATA_MAX_SIZE, there will
+      // be an extra 0-size page at the end
+  for (unsigned i = 0; i < numPagesToWrite; ++i) {
+    // First, fill in the changeable parts of our 'page header' array;
+    u_int8_t header_type_flag = 0x0;
+    if (!fHaveWrittenFirstFrame && i == 0) {
+      header_type_flag |= 0x02; // 'bos'
+      fHaveWrittenFirstFrame = True; // for the future
+    }
+    if (i > 0) header_type_flag |= 0x01; // 'continuation'
+    if (fHaveSeenEOF && i == numPagesToWrite-1) header_type_flag |= 0x04; // 'eos'
+    fPageHeaderBytes[5] = header_type_flag;
+    
+    if (i < numPagesToWrite-1) {
+      // For pages where the frame does not end, set 'granule_position' in the header to -1:
+      fPageHeaderBytes[6] = fPageHeaderBytes[7] = fPageHeaderBytes[8] = fPageHeaderBytes[9] =
+      fPageHeaderBytes[10] = fPageHeaderBytes[11] = fPageHeaderBytes[12] = fPageHeaderBytes[13]
+	= 0xFF;
+    } else {
+      fPageHeaderBytes[6] = (u_int8_t)fGranulePosition;
+      fPageHeaderBytes[7] = (u_int8_t)(fGranulePosition>>8);
+      fPageHeaderBytes[8] = (u_int8_t)(fGranulePosition>>16);
+      fPageHeaderBytes[9] = (u_int8_t)(fGranulePosition>>24);
+      fPageHeaderBytes[10] = (u_int8_t)(fGranulePosition>>32);
+      fPageHeaderBytes[11] = (u_int8_t)(fGranulePosition>>40);
+      fPageHeaderBytes[12] = (u_int8_t)(fGranulePosition>>48);
+      fPageHeaderBytes[13] = (u_int8_t)(fGranulePosition>>56);
+    }
+
+    fPageHeaderBytes[18] = (u_int8_t)fPageSequenceNumber;
+    fPageHeaderBytes[19] = (u_int8_t)(fPageSequenceNumber>>8);
+    fPageHeaderBytes[20] = (u_int8_t)(fPageSequenceNumber>>16);
+    fPageHeaderBytes[21] = (u_int8_t)(fPageSequenceNumber>>24);
+    ++fPageSequenceNumber;
+
+    unsigned pageDataSize;
+    u_int8_t number_page_segments;
+    if (dataSize >= PAGE_DATA_MAX_SIZE) {
+      pageDataSize = PAGE_DATA_MAX_SIZE;
+      number_page_segments = 255;
+    } else {
+      pageDataSize = dataSize;
+      number_page_segments = (pageDataSize+255)/255; // so that we don't end with a lacing of 255
+    }
+    fPageHeaderBytes[26] = number_page_segments;
+
+    u_int8_t segment_table[255];
+    for (unsigned j = 0; j < (unsigned)(number_page_segments-1); ++j) {
+      segment_table[j] = 255;
+    }
+    segment_table[number_page_segments-1] = pageDataSize%255;
+
+    // Compute the CRC from the 'page header' array, the 'segment_table', and the frame data:
+    u_int32_t crc = 0;
+    fPageHeaderBytes[22] = fPageHeaderBytes[23] = fPageHeaderBytes[24] = fPageHeaderBytes[25] = 0;
+    crc = calculateCRC(fPageHeaderBytes, 27, 0);
+    crc = calculateCRC(segment_table, number_page_segments, crc);
+    crc = calculateCRC(data, pageDataSize, crc);
+    fPageHeaderBytes[22] = (u_int8_t)crc;
+    fPageHeaderBytes[23] = (u_int8_t)(crc>>8);
+    fPageHeaderBytes[24] = (u_int8_t)(crc>>16);
+    fPageHeaderBytes[25] = (u_int8_t)(crc>>24);
+
+    // Then write out the 'page header' array:
+    FileSink::addData(fPageHeaderBytes, 27, presentationTime);
+
+    // Then write out the 'segment_table':
+    FileSink::addData(segment_table, number_page_segments, presentationTime);
+
+    // Then add frame data, to complete the page:
+    FileSink::addData(data, pageDataSize, presentationTime);
+    data += pageDataSize;
+    dataSize -= pageDataSize;
+  }
+}
+
+void OggFileSink::afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime) {
+  if (!fHaveWrittenFirstFrame) {
+    fFirstPresentationTime = presentationTime;
+
+    // If we have a 'config string' representing 'packed configuration headers'
+    // ("identification", "comment", "setup"), unpack them and prepend them to the file:
+    if (fConfigStr != NULL && fConfigStr[0] != '\0') {
+      u_int8_t* identificationHdr; unsigned identificationHdrSize;
+      u_int8_t* commentHdr; unsigned commentHdrSize;
+      u_int8_t* setupHdr; unsigned setupHdrSize;
+      u_int32_t identField;
+      parseVorbisOrTheoraConfigStr(fConfigStr,
+				   identificationHdr, identificationHdrSize,
+				   commentHdr, commentHdrSize,
+				   setupHdr, setupHdrSize,
+				   identField);
+      if (identificationHdrSize >= 42
+	  && strncmp((const char*)&identificationHdr[1], "theora", 6) == 0) {
+	// Hack for Theora video: Parse the "identification" hdr to get the "KFGSHIFT" parameter:
+	fIsTheora = True;
+	u_int8_t const KFGSHIFT = ((identificationHdr[40]&3)<<3) | (identificationHdr[41]>>5);
+	fGranuleIncrementPerFrame = (u_int64_t)(1 << KFGSHIFT);
+      }
+      OggFileSink::addData(identificationHdr, identificationHdrSize, presentationTime);
+      OggFileSink::addData(commentHdr, commentHdrSize, presentationTime);
+      
+      // Hack: Handle the "setup" header as if had arrived in the previous delivery, so it'll get
+      // written properly below:
+      if (setupHdrSize > fBufferSize) {
+	fAltFrameSize = fBufferSize;
+	fAltNumTruncatedBytes = setupHdrSize - fBufferSize;
+      } else {
+	fAltFrameSize = setupHdrSize;
+	fAltNumTruncatedBytes = 0;
+      }
+      memmove(fAltBuffer, setupHdr, fAltFrameSize);
+      fAltPresentationTime = presentationTime;
+      
+      delete[] identificationHdr;
+      delete[] commentHdr;
+      delete[] setupHdr;
+    }
+  }
+
+  // Save this input frame for next time, and instead write the previous input frame now:
+  unsigned char* tmpPtr = fBuffer; fBuffer = fAltBuffer; fAltBuffer = tmpPtr;
+  unsigned prevFrameSize = fAltFrameSize; fAltFrameSize = frameSize;
+  unsigned prevNumTruncatedBytes = fAltNumTruncatedBytes; fAltNumTruncatedBytes = numTruncatedBytes;
+  struct timeval prevPresentationTime = fAltPresentationTime; fAltPresentationTime = presentationTime;
+
+  // Call the parent class to complete the normal file write with the (previous) input frame:
+  FileSink::afterGettingFrame(prevFrameSize, prevNumTruncatedBytes, prevPresentationTime);
+}
+
+void OggFileSink::ourOnSourceClosure(void* clientData) {
+  ((OggFileSink*)clientData)->ourOnSourceClosure();
+}
+
+void OggFileSink::ourOnSourceClosure() {
+  fHaveSeenEOF = True;
+
+  // We still have the previously-arrived frame, so write it to the file before we end:
+  OggFileSink::addData(fAltBuffer, fAltFrameSize, fAltPresentationTime);
+
+  // Handle the closure for real:
+  onSourceClosure();
+}
diff --git a/liveMedia/OnDemandServerMediaSubsession.cpp b/liveMedia/OnDemandServerMediaSubsession.cpp
new file mode 100644
index 0000000..0c9fb5d
--- /dev/null
+++ b/liveMedia/OnDemandServerMediaSubsession.cpp
@@ -0,0 +1,624 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand.
+// Implementation
+
+#include "OnDemandServerMediaSubsession.hh"
+#include <GroupsockHelper.hh>
+
+OnDemandServerMediaSubsession
+::OnDemandServerMediaSubsession(UsageEnvironment& env,
+				Boolean reuseFirstSource,
+				portNumBits initialPortNum,
+				Boolean multiplexRTCPWithRTP)
+  : ServerMediaSubsession(env),
+    fSDPLines(NULL), fReuseFirstSource(reuseFirstSource),
+    fMultiplexRTCPWithRTP(multiplexRTCPWithRTP), fLastStreamToken(NULL),
+    fAppHandlerTask(NULL), fAppHandlerClientData(NULL) {
+  fDestinationsHashTable = HashTable::create(ONE_WORD_HASH_KEYS);
+  if (fMultiplexRTCPWithRTP) {
+    fInitialPortNum = initialPortNum;
+  } else {
+    // Make sure RTP ports are even-numbered:
+    fInitialPortNum = (initialPortNum+1)&~1;
+  }
+  gethostname(fCNAME, sizeof fCNAME);
+  fCNAME[sizeof fCNAME-1] = '\0'; // just in case
+}
+
+OnDemandServerMediaSubsession::~OnDemandServerMediaSubsession() {
+  delete[] fSDPLines;
+
+  // Clean out the destinations hash table:
+  while (1) {
+    Destinations* destinations
+      = (Destinations*)(fDestinationsHashTable->RemoveNext());
+    if (destinations == NULL) break;
+    delete destinations;
+  }
+  delete fDestinationsHashTable;
+}
+
+char const*
+OnDemandServerMediaSubsession::sdpLines() {
+  if (fSDPLines == NULL) {
+    // We need to construct a set of SDP lines that describe this
+    // subsession (as a unicast stream).  To do so, we first create
+    // dummy (unused) source and "RTPSink" objects,
+    // whose parameters we use for the SDP lines:
+    unsigned estBitrate;
+    FramedSource* inputSource = createNewStreamSource(0, estBitrate);
+    if (inputSource == NULL) return NULL; // file not found
+
+    struct in_addr dummyAddr;
+    dummyAddr.s_addr = 0;
+    Groupsock* dummyGroupsock = createGroupsock(dummyAddr, 0);
+    unsigned char rtpPayloadType = 96 + trackNumber()-1; // if dynamic
+    RTPSink* dummyRTPSink = createNewRTPSink(dummyGroupsock, rtpPayloadType, inputSource);
+    if (dummyRTPSink != NULL && dummyRTPSink->estimatedBitrate() > 0) estBitrate = dummyRTPSink->estimatedBitrate();
+
+    setSDPLinesFromRTPSink(dummyRTPSink, inputSource, estBitrate);
+    Medium::close(dummyRTPSink);
+    delete dummyGroupsock;
+    closeStreamSource(inputSource);
+  }
+
+  return fSDPLines;
+}
+
+void OnDemandServerMediaSubsession
+::getStreamParameters(unsigned clientSessionId,
+		      netAddressBits clientAddress,
+		      Port const& clientRTPPort,
+		      Port const& clientRTCPPort,
+		      int tcpSocketNum,
+		      unsigned char rtpChannelId,
+		      unsigned char rtcpChannelId,
+		      netAddressBits& destinationAddress,
+		      u_int8_t& /*destinationTTL*/,
+		      Boolean& isMulticast,
+		      Port& serverRTPPort,
+		      Port& serverRTCPPort,
+		      void*& streamToken) {
+  if (destinationAddress == 0) destinationAddress = clientAddress;
+  struct in_addr destinationAddr; destinationAddr.s_addr = destinationAddress;
+  isMulticast = False;
+
+  if (fLastStreamToken != NULL && fReuseFirstSource) {
+    // Special case: Rather than creating a new 'StreamState',
+    // we reuse the one that we've already created:
+    serverRTPPort = ((StreamState*)fLastStreamToken)->serverRTPPort();
+    serverRTCPPort = ((StreamState*)fLastStreamToken)->serverRTCPPort();
+    ++((StreamState*)fLastStreamToken)->referenceCount();
+    streamToken = fLastStreamToken;
+  } else {
+    // Normal case: Create a new media source:
+    unsigned streamBitrate;
+    FramedSource* mediaSource
+      = createNewStreamSource(clientSessionId, streamBitrate);
+
+    // Create 'groupsock' and 'sink' objects for the destination,
+    // using previously unused server port numbers:
+    RTPSink* rtpSink = NULL;
+    BasicUDPSink* udpSink = NULL;
+    Groupsock* rtpGroupsock = NULL;
+    Groupsock* rtcpGroupsock = NULL;
+
+    if (clientRTPPort.num() != 0 || tcpSocketNum >= 0) { // Normal case: Create destinations
+      portNumBits serverPortNum;
+      if (clientRTCPPort.num() == 0) {
+	// We're streaming raw UDP (not RTP). Create a single groupsock:
+	NoReuse dummy(envir()); // ensures that we skip over ports that are already in use
+	for (serverPortNum = fInitialPortNum; ; ++serverPortNum) {
+	  struct in_addr dummyAddr; dummyAddr.s_addr = 0;
+	  
+	  serverRTPPort = serverPortNum;
+	  rtpGroupsock = createGroupsock(dummyAddr, serverRTPPort);
+	  if (rtpGroupsock->socketNum() >= 0) break; // success
+	}
+
+	udpSink = BasicUDPSink::createNew(envir(), rtpGroupsock);
+      } else {
+	// Normal case: We're streaming RTP (over UDP or TCP).  Create a pair of
+	// groupsocks (RTP and RTCP), with adjacent port numbers (RTP port number even).
+	// (If we're multiplexing RTCP and RTP over the same port number, it can be odd or even.)
+	NoReuse dummy(envir()); // ensures that we skip over ports that are already in use
+	for (portNumBits serverPortNum = fInitialPortNum; ; ++serverPortNum) {
+	  struct in_addr dummyAddr; dummyAddr.s_addr = 0;
+
+	  serverRTPPort = serverPortNum;
+	  rtpGroupsock = createGroupsock(dummyAddr, serverRTPPort);
+	  if (rtpGroupsock->socketNum() < 0) {
+	    delete rtpGroupsock;
+	    continue; // try again
+	  }
+
+	  if (fMultiplexRTCPWithRTP) {
+	    // Use the RTP 'groupsock' object for RTCP as well:
+	    serverRTCPPort = serverRTPPort;
+	    rtcpGroupsock = rtpGroupsock;
+	  } else {
+	    // Create a separate 'groupsock' object (with the next (odd) port number) for RTCP:
+	    serverRTCPPort = ++serverPortNum;
+	    rtcpGroupsock = createGroupsock(dummyAddr, serverRTCPPort);
+	    if (rtcpGroupsock->socketNum() < 0) {
+	      delete rtpGroupsock;
+	      delete rtcpGroupsock;
+	      continue; // try again
+	    }
+	  }
+
+	  break; // success
+	}
+
+	unsigned char rtpPayloadType = 96 + trackNumber()-1; // if dynamic
+	rtpSink = createNewRTPSink(rtpGroupsock, rtpPayloadType, mediaSource);
+	if (rtpSink != NULL && rtpSink->estimatedBitrate() > 0) streamBitrate = rtpSink->estimatedBitrate();
+      }
+
+      // Turn off the destinations for each groupsock.  They'll get set later
+      // (unless TCP is used instead):
+      if (rtpGroupsock != NULL) rtpGroupsock->removeAllDestinations();
+      if (rtcpGroupsock != NULL) rtcpGroupsock->removeAllDestinations();
+
+      if (rtpGroupsock != NULL) {
+	// Try to use a big send buffer for RTP -  at least 0.1 second of
+	// specified bandwidth and at least 50 KB
+	unsigned rtpBufSize = streamBitrate * 25 / 2; // 1 kbps * 0.1 s = 12.5 bytes
+	if (rtpBufSize < 50 * 1024) rtpBufSize = 50 * 1024;
+	increaseSendBufferTo(envir(), rtpGroupsock->socketNum(), rtpBufSize);
+      }
+    }
+
+    // Set up the state of the stream.  The stream will get started later:
+    streamToken = fLastStreamToken
+      = new StreamState(*this, serverRTPPort, serverRTCPPort, rtpSink, udpSink,
+			streamBitrate, mediaSource,
+			rtpGroupsock, rtcpGroupsock);
+  }
+
+  // Record these destinations as being for this client session id:
+  Destinations* destinations;
+  if (tcpSocketNum < 0) { // UDP
+    destinations = new Destinations(destinationAddr, clientRTPPort, clientRTCPPort);
+  } else { // TCP
+    destinations = new Destinations(tcpSocketNum, rtpChannelId, rtcpChannelId);
+  }
+  fDestinationsHashTable->Add((char const*)clientSessionId, destinations);
+}
+
+void OnDemandServerMediaSubsession::startStream(unsigned clientSessionId,
+						void* streamToken,
+						TaskFunc* rtcpRRHandler,
+						void* rtcpRRHandlerClientData,
+						unsigned short& rtpSeqNum,
+						unsigned& rtpTimestamp,
+						ServerRequestAlternativeByteHandler* serverRequestAlternativeByteHandler,
+						void* serverRequestAlternativeByteHandlerClientData) {
+  StreamState* streamState = (StreamState*)streamToken;
+  Destinations* destinations
+    = (Destinations*)(fDestinationsHashTable->Lookup((char const*)clientSessionId));
+  if (streamState != NULL) {
+    streamState->startPlaying(destinations, clientSessionId,
+			      rtcpRRHandler, rtcpRRHandlerClientData,
+			      serverRequestAlternativeByteHandler, serverRequestAlternativeByteHandlerClientData);
+    RTPSink* rtpSink = streamState->rtpSink(); // alias
+    if (rtpSink != NULL) {
+      rtpSeqNum = rtpSink->currentSeqNo();
+      rtpTimestamp = rtpSink->presetNextTimestamp();
+    }
+  }
+}
+
+void OnDemandServerMediaSubsession::pauseStream(unsigned /*clientSessionId*/,
+						void* streamToken) {
+  // Pausing isn't allowed if multiple clients are receiving data from
+  // the same source:
+  if (fReuseFirstSource) return;
+
+  StreamState* streamState = (StreamState*)streamToken;
+  if (streamState != NULL) streamState->pause();
+}
+
+void OnDemandServerMediaSubsession::seekStream(unsigned /*clientSessionId*/,
+					       void* streamToken, double& seekNPT, double streamDuration, u_int64_t& numBytes) {
+  numBytes = 0; // by default: unknown
+
+  // Seeking isn't allowed if multiple clients are receiving data from the same source:
+  if (fReuseFirstSource) return;
+
+  StreamState* streamState = (StreamState*)streamToken;
+  if (streamState != NULL && streamState->mediaSource() != NULL) {
+    seekStreamSource(streamState->mediaSource(), seekNPT, streamDuration, numBytes);
+
+    streamState->startNPT() = (float)seekNPT;
+    RTPSink* rtpSink = streamState->rtpSink(); // alias
+    if (rtpSink != NULL) rtpSink->resetPresentationTimes();
+  }
+}
+
+void OnDemandServerMediaSubsession::seekStream(unsigned /*clientSessionId*/,
+					       void* streamToken, char*& absStart, char*& absEnd) {
+  // Seeking isn't allowed if multiple clients are receiving data from the same source:
+  if (fReuseFirstSource) return;
+
+  StreamState* streamState = (StreamState*)streamToken;
+  if (streamState != NULL && streamState->mediaSource() != NULL) {
+    seekStreamSource(streamState->mediaSource(), absStart, absEnd);
+  }
+}
+
+void OnDemandServerMediaSubsession::nullSeekStream(unsigned /*clientSessionId*/, void* streamToken,
+						   double streamEndTime, u_int64_t& numBytes) {
+  numBytes = 0; // by default: unknown
+
+  StreamState* streamState = (StreamState*)streamToken;
+  if (streamState != NULL && streamState->mediaSource() != NULL) {
+    // Because we're not seeking here, get the current NPT, and remember it as the new 'start' NPT:
+    streamState->startNPT() = getCurrentNPT(streamToken);
+
+    double duration = streamEndTime - streamState->startNPT();
+    if (duration < 0.0) duration = 0.0;
+    setStreamSourceDuration(streamState->mediaSource(), duration, numBytes);
+
+    RTPSink* rtpSink = streamState->rtpSink(); // alias
+    if (rtpSink != NULL) rtpSink->resetPresentationTimes();
+  }
+}
+
+void OnDemandServerMediaSubsession::setStreamScale(unsigned /*clientSessionId*/,
+						   void* streamToken, float scale) {
+  // Changing the scale factor isn't allowed if multiple clients are receiving data
+  // from the same source:
+  if (fReuseFirstSource) return;
+
+  StreamState* streamState = (StreamState*)streamToken;
+  if (streamState != NULL && streamState->mediaSource() != NULL) {
+    setStreamSourceScale(streamState->mediaSource(), scale);
+  }
+}
+
+float OnDemandServerMediaSubsession::getCurrentNPT(void* streamToken) {
+  do {
+    if (streamToken == NULL) break;
+
+    StreamState* streamState = (StreamState*)streamToken;
+    RTPSink* rtpSink = streamState->rtpSink();
+    if (rtpSink == NULL) break;
+
+    return streamState->startNPT()
+      + (rtpSink->mostRecentPresentationTime().tv_sec - rtpSink->initialPresentationTime().tv_sec)
+      + (rtpSink->mostRecentPresentationTime().tv_usec - rtpSink->initialPresentationTime().tv_usec)/1000000.0f;
+  } while (0);
+
+  return 0.0;
+}
+
+FramedSource* OnDemandServerMediaSubsession::getStreamSource(void* streamToken) {
+  if (streamToken == NULL) return NULL;
+
+  StreamState* streamState = (StreamState*)streamToken;
+  return streamState->mediaSource();
+}
+
+void OnDemandServerMediaSubsession
+::getRTPSinkandRTCP(void* streamToken,
+		    RTPSink const*& rtpSink, RTCPInstance const*& rtcp) {
+  if (streamToken == NULL) {
+    rtpSink = NULL;
+    rtcp = NULL;
+    return;
+  }
+
+  StreamState* streamState = (StreamState*)streamToken;
+  rtpSink = streamState->rtpSink();
+  rtcp = streamState->rtcpInstance();
+}
+
+void OnDemandServerMediaSubsession::deleteStream(unsigned clientSessionId,
+						 void*& streamToken) {
+  StreamState* streamState = (StreamState*)streamToken;
+
+  // Look up (and remove) the destinations for this client session:
+  Destinations* destinations
+    = (Destinations*)(fDestinationsHashTable->Lookup((char const*)clientSessionId));
+  if (destinations != NULL) {
+    fDestinationsHashTable->Remove((char const*)clientSessionId);
+
+    // Stop streaming to these destinations:
+    if (streamState != NULL) streamState->endPlaying(destinations, clientSessionId);
+  }
+
+  // Delete the "StreamState" structure if it's no longer being used:
+  if (streamState != NULL) {
+    if (streamState->referenceCount() > 0) --streamState->referenceCount();
+    if (streamState->referenceCount() == 0) {
+      delete streamState;
+      streamToken = NULL;
+    }
+  }
+
+  // Finally, delete the destinations themselves:
+  delete destinations;
+}
+
+char const* OnDemandServerMediaSubsession
+::getAuxSDPLine(RTPSink* rtpSink, FramedSource* /*inputSource*/) {
+  // Default implementation:
+  return rtpSink == NULL ? NULL : rtpSink->auxSDPLine();
+}
+
+void OnDemandServerMediaSubsession::seekStreamSource(FramedSource* /*inputSource*/,
+						     double& /*seekNPT*/, double /*streamDuration*/, u_int64_t& numBytes) {
+  // Default implementation: Do nothing
+  numBytes = 0;
+}
+
+void OnDemandServerMediaSubsession::seekStreamSource(FramedSource* /*inputSource*/,
+						     char*& absStart, char*& absEnd) {
+  // Default implementation: do nothing (but delete[] and assign "absStart" and "absEnd" to NULL, to show that we don't handle this)
+  delete[] absStart; absStart = NULL;
+  delete[] absEnd; absEnd = NULL;
+}
+
+void OnDemandServerMediaSubsession
+::setStreamSourceScale(FramedSource* /*inputSource*/, float /*scale*/) {
+  // Default implementation: Do nothing
+}
+
+void OnDemandServerMediaSubsession
+::setStreamSourceDuration(FramedSource* /*inputSource*/, double /*streamDuration*/, u_int64_t& numBytes) {
+  // Default implementation: Do nothing
+  numBytes = 0;
+}
+
+void OnDemandServerMediaSubsession::closeStreamSource(FramedSource *inputSource) {
+  Medium::close(inputSource);
+}
+
+Groupsock* OnDemandServerMediaSubsession
+::createGroupsock(struct in_addr const& addr, Port port) {
+  // Default implementation; may be redefined by subclasses:
+  return new Groupsock(envir(), addr, port, 255);
+}
+
+RTCPInstance* OnDemandServerMediaSubsession
+::createRTCP(Groupsock* RTCPgs, unsigned totSessionBW, /* in kbps */
+	     unsigned char const* cname, RTPSink* sink) {
+  // Default implementation; may be redefined by subclasses:
+  return RTCPInstance::createNew(envir(), RTCPgs, totSessionBW, cname, sink, NULL/*we're a server*/);
+}
+
+void OnDemandServerMediaSubsession
+::setRTCPAppPacketHandler(RTCPAppHandlerFunc* handler, void* clientData) {
+  fAppHandlerTask = handler;
+  fAppHandlerClientData = clientData;
+}
+
+void OnDemandServerMediaSubsession
+::sendRTCPAppPacket(u_int8_t subtype, char const* name,
+		    u_int8_t* appDependentData, unsigned appDependentDataSize) {
+  StreamState* streamState = (StreamState*)fLastStreamToken;
+  if (streamState != NULL) {
+    streamState->sendRTCPAppPacket(subtype, name, appDependentData, appDependentDataSize);
+  }
+}
+
+void OnDemandServerMediaSubsession
+::setSDPLinesFromRTPSink(RTPSink* rtpSink, FramedSource* inputSource, unsigned estBitrate) {
+  if (rtpSink == NULL) return;
+
+  char const* mediaType = rtpSink->sdpMediaType();
+  unsigned char rtpPayloadType = rtpSink->rtpPayloadType();
+  AddressString ipAddressStr(fServerAddressForSDP);
+  char* rtpmapLine = rtpSink->rtpmapLine();
+  char const* rtcpmuxLine = fMultiplexRTCPWithRTP ? "a=rtcp-mux\r\n" : "";
+  char const* rangeLine = rangeSDPLine();
+  char const* auxSDPLine = getAuxSDPLine(rtpSink, inputSource);
+  if (auxSDPLine == NULL) auxSDPLine = "";
+
+  char const* const sdpFmt =
+    "m=%s %u RTP/AVP %d\r\n"
+    "c=IN IP4 %s\r\n"
+    "b=AS:%u\r\n"
+    "%s"
+    "%s"
+    "%s"
+    "%s"
+    "a=control:%s\r\n";
+  unsigned sdpFmtSize = strlen(sdpFmt)
+    + strlen(mediaType) + 5 /* max short len */ + 3 /* max char len */
+    + strlen(ipAddressStr.val())
+    + 20 /* max int len */
+    + strlen(rtpmapLine)
+    + strlen(rtcpmuxLine)
+    + strlen(rangeLine)
+    + strlen(auxSDPLine)
+    + strlen(trackId());
+  char* sdpLines = new char[sdpFmtSize];
+  sprintf(sdpLines, sdpFmt,
+	  mediaType, // m= <media>
+	  fPortNumForSDP, // m= <port>
+	  rtpPayloadType, // m= <fmt list>
+	  ipAddressStr.val(), // c= address
+	  estBitrate, // b=AS:<bandwidth>
+	  rtpmapLine, // a=rtpmap:... (if present)
+	  rtcpmuxLine, // a=rtcp-mux:... (if present)
+	  rangeLine, // a=range:... (if present)
+	  auxSDPLine, // optional extra SDP line
+	  trackId()); // a=control:<track-id>
+  delete[] (char*)rangeLine; delete[] rtpmapLine;
+
+  delete[] fSDPLines; fSDPLines = strDup(sdpLines);
+  delete[] sdpLines;
+}
+
+
+////////// StreamState implementation //////////
+
+static void afterPlayingStreamState(void* clientData) {
+  StreamState* streamState = (StreamState*)clientData;
+  if (streamState->streamDuration() == 0.0) {
+    // When the input stream ends, tear it down.  This will cause a RTCP "BYE"
+    // to be sent to each client, teling it that the stream has ended.
+    // (Because the stream didn't have a known duration, there was no other
+    //  way for clients to know when the stream ended.)
+    streamState->reclaim();
+  }
+  // Otherwise, keep the stream alive, in case a client wants to
+  // subsequently re-play the stream starting from somewhere other than the end.
+  // (This can be done only on streams that have a known duration.)
+}
+
+StreamState::StreamState(OnDemandServerMediaSubsession& master,
+                         Port const& serverRTPPort, Port const& serverRTCPPort,
+			 RTPSink* rtpSink, BasicUDPSink* udpSink,
+			 unsigned totalBW, FramedSource* mediaSource,
+			 Groupsock* rtpGS, Groupsock* rtcpGS)
+  : fMaster(master), fAreCurrentlyPlaying(False), fReferenceCount(1),
+    fServerRTPPort(serverRTPPort), fServerRTCPPort(serverRTCPPort),
+    fRTPSink(rtpSink), fUDPSink(udpSink), fStreamDuration(master.duration()),
+    fTotalBW(totalBW), fRTCPInstance(NULL) /* created later */,
+    fMediaSource(mediaSource), fStartNPT(0.0), fRTPgs(rtpGS), fRTCPgs(rtcpGS) {
+}
+
+StreamState::~StreamState() {
+  reclaim();
+}
+
+void StreamState
+::startPlaying(Destinations* dests, unsigned clientSessionId,
+	       TaskFunc* rtcpRRHandler, void* rtcpRRHandlerClientData,
+	       ServerRequestAlternativeByteHandler* serverRequestAlternativeByteHandler,
+	       void* serverRequestAlternativeByteHandlerClientData) {
+  if (dests == NULL) return;
+
+  if (fRTCPInstance == NULL && fRTPSink != NULL) {
+    // Create (and start) a 'RTCP instance' for this RTP sink:
+    fRTCPInstance = fMaster.createRTCP(fRTCPgs, fTotalBW, (unsigned char*)fMaster.fCNAME, fRTPSink);
+        // Note: This starts RTCP running automatically
+    fRTCPInstance->setAppHandler(fMaster.fAppHandlerTask, fMaster.fAppHandlerClientData);
+  }
+
+  if (dests->isTCP) {
+    // Change RTP and RTCP to use the TCP socket instead of UDP:
+    if (fRTPSink != NULL) {
+      fRTPSink->addStreamSocket(dests->tcpSocketNum, dests->rtpChannelId);
+      RTPInterface
+	::setServerRequestAlternativeByteHandler(fRTPSink->envir(), dests->tcpSocketNum,
+						 serverRequestAlternativeByteHandler, serverRequestAlternativeByteHandlerClientData);
+        // So that we continue to handle RTSP commands from the client
+    }
+    if (fRTCPInstance != NULL) {
+      fRTCPInstance->addStreamSocket(dests->tcpSocketNum, dests->rtcpChannelId);
+      fRTCPInstance->setSpecificRRHandler(dests->tcpSocketNum, dests->rtcpChannelId,
+					  rtcpRRHandler, rtcpRRHandlerClientData);
+    }
+  } else {
+    // Tell the RTP and RTCP 'groupsocks' about this destination
+    // (in case they don't already have it):
+    if (fRTPgs != NULL) fRTPgs->addDestination(dests->addr, dests->rtpPort, clientSessionId);
+    if (fRTCPgs != NULL && !(fRTCPgs == fRTPgs && dests->rtcpPort.num() == dests->rtpPort.num())) {
+      fRTCPgs->addDestination(dests->addr, dests->rtcpPort, clientSessionId);
+    }
+    if (fRTCPInstance != NULL) {
+      fRTCPInstance->setSpecificRRHandler(dests->addr.s_addr, dests->rtcpPort,
+					  rtcpRRHandler, rtcpRRHandlerClientData);
+    }
+  }
+
+  if (fRTCPInstance != NULL) {
+    // Hack: Send an initial RTCP "SR" packet, before the initial RTP packet, so that receivers will (likely) be able to
+    // get RTCP-synchronized presentation times immediately:
+    fRTCPInstance->sendReport();
+  }
+
+  if (!fAreCurrentlyPlaying && fMediaSource != NULL) {
+    if (fRTPSink != NULL) {
+      fRTPSink->startPlaying(*fMediaSource, afterPlayingStreamState, this);
+      fAreCurrentlyPlaying = True;
+    } else if (fUDPSink != NULL) {
+      fUDPSink->startPlaying(*fMediaSource, afterPlayingStreamState, this);
+      fAreCurrentlyPlaying = True;
+    }
+  }
+}
+
+void StreamState::pause() {
+  if (fRTPSink != NULL) fRTPSink->stopPlaying();
+  if (fUDPSink != NULL) fUDPSink->stopPlaying();
+  if (fMediaSource != NULL) fMediaSource->stopGettingFrames();
+  fAreCurrentlyPlaying = False;
+}
+
+void StreamState::endPlaying(Destinations* dests, unsigned clientSessionId) {
+#if 0
+  // The following code is temporarily disabled, because it erroneously sends RTCP "BYE"s to all clients if multiple
+  // clients are streaming from the same data source (i.e., if "reuseFirstSource" is True), and we don't want that to happen
+  // if we're being called as a result of a single one of these clients having sent a "TEARDOWN" (rather than the whole stream
+  // having been closed, for all clients).
+  // This will be fixed for real later.
+  if (fRTCPInstance != NULL) {
+    // Hack: Explicitly send a RTCP "BYE" packet now, because the code below will prevent that from happening later,
+    // when "fRTCPInstance" gets deleted:
+    fRTCPInstance->sendBYE();
+  }
+#endif
+
+  if (dests->isTCP) {
+    if (fRTPSink != NULL) {
+      // Comment out the following, because it prevents the "RTSPClientConnection" object
+      // from being closed after handling a "TEARDOWN": #####
+      //RTPInterface::clearServerRequestAlternativeByteHandler(fRTPSink->envir(), dests->tcpSocketNum);
+      fRTPSink->removeStreamSocket(dests->tcpSocketNum, dests->rtpChannelId);
+    }
+    if (fRTCPInstance != NULL) {
+      fRTCPInstance->removeStreamSocket(dests->tcpSocketNum, dests->rtcpChannelId);
+      fRTCPInstance->unsetSpecificRRHandler(dests->tcpSocketNum, dests->rtcpChannelId);
+    }
+  } else {
+    // Tell the RTP and RTCP 'groupsocks' to stop using these destinations:
+    if (fRTPgs != NULL) fRTPgs->removeDestination(clientSessionId);
+    if (fRTCPgs != NULL && fRTCPgs != fRTPgs) fRTCPgs->removeDestination(clientSessionId);
+    if (fRTCPInstance != NULL) {
+      fRTCPInstance->unsetSpecificRRHandler(dests->addr.s_addr, dests->rtcpPort);
+    }
+  }
+}
+
+void StreamState::sendRTCPAppPacket(u_int8_t subtype, char const* name,
+				    u_int8_t* appDependentData, unsigned appDependentDataSize) {
+  if (fRTCPInstance != NULL) {
+    fRTCPInstance->sendAppPacket(subtype, name, appDependentData, appDependentDataSize);
+  }
+}
+
+void StreamState::reclaim() {
+  // Delete allocated media objects
+  Medium::close(fRTCPInstance) /* will send a RTCP BYE */; fRTCPInstance = NULL;
+  Medium::close(fRTPSink); fRTPSink = NULL;
+  Medium::close(fUDPSink); fUDPSink = NULL;
+
+  fMaster.closeStreamSource(fMediaSource); fMediaSource = NULL;
+  if (fMaster.fLastStreamToken == this) fMaster.fLastStreamToken = NULL;
+
+  delete fRTPgs;
+  if (fRTCPgs != fRTPgs) delete fRTCPgs;
+  fRTPgs = NULL; fRTCPgs = NULL;
+}
diff --git a/liveMedia/OutputFile.cpp b/liveMedia/OutputFile.cpp
new file mode 100644
index 0000000..ecca580
--- /dev/null
+++ b/liveMedia/OutputFile.cpp
@@ -0,0 +1,60 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Common routines for opening/closing named output files
+// Implementation
+
+#if (defined(__WIN32__) || defined(_WIN32)) && !defined(_WIN32_WCE)
+#include <io.h>
+#include <fcntl.h>
+#endif
+#ifndef _WIN32_WCE
+#include <sys/stat.h>
+#endif
+#include <string.h>
+
+#include "OutputFile.hh"
+
+FILE* OpenOutputFile(UsageEnvironment& env, char const* fileName) {
+  FILE* fid;
+
+  // Check for special case 'file names': "stdout" and "stderr"
+  if (strcmp(fileName, "stdout") == 0) {
+    fid = stdout;
+#if (defined(__WIN32__) || defined(_WIN32)) && !defined(_WIN32_WCE)
+    _setmode(_fileno(stdout), _O_BINARY);       // convert to binary mode
+#endif
+  } else if (strcmp(fileName, "stderr") == 0) {
+    fid = stderr;
+#if (defined(__WIN32__) || defined(_WIN32)) && !defined(_WIN32_WCE)
+    _setmode(_fileno(stderr), _O_BINARY);       // convert to binary mode
+#endif
+  } else {
+    fid = fopen(fileName, "wb");
+  }
+
+  if (fid == NULL) {
+    env.setResultMsg("unable to open file \"", fileName, "\"");
+  }
+
+  return fid;
+}
+
+void CloseOutputFile(FILE* fid) {
+  // Don't close 'stdout' or 'stderr', in case we want to use it again later.
+  if (fid != NULL && fid != stdout && fid != stderr) fclose(fid);
+}
diff --git a/liveMedia/PassiveServerMediaSubsession.cpp b/liveMedia/PassiveServerMediaSubsession.cpp
new file mode 100644
index 0000000..33c4fb5
--- /dev/null
+++ b/liveMedia/PassiveServerMediaSubsession.cpp
@@ -0,0 +1,228 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that represents an existing
+// 'RTPSink', rather than one that creates new 'RTPSink's on demand.
+// Implementation
+
+#include "PassiveServerMediaSubsession.hh"
+#include <GroupsockHelper.hh>
+
+////////// PassiveServerMediaSubsession //////////
+
+PassiveServerMediaSubsession*
+PassiveServerMediaSubsession::createNew(RTPSink& rtpSink,
+					RTCPInstance* rtcpInstance) {
+  return new PassiveServerMediaSubsession(rtpSink, rtcpInstance);
+}
+
+PassiveServerMediaSubsession
+::PassiveServerMediaSubsession(RTPSink& rtpSink, RTCPInstance* rtcpInstance)
+  : ServerMediaSubsession(rtpSink.envir()),
+    fSDPLines(NULL), fRTPSink(rtpSink), fRTCPInstance(rtcpInstance) {
+  fClientRTCPSourceRecords = HashTable::create(ONE_WORD_HASH_KEYS);
+}
+
+class RTCPSourceRecord {
+public:
+  RTCPSourceRecord(netAddressBits addr, Port const& port)
+    : addr(addr), port(port) {
+  }
+
+  netAddressBits addr;
+  Port port;
+};
+
+PassiveServerMediaSubsession::~PassiveServerMediaSubsession() {
+  delete[] fSDPLines;
+
+  // Clean out the RTCPSourceRecord table:
+  while (1) {
+    RTCPSourceRecord* source = (RTCPSourceRecord*)(fClientRTCPSourceRecords->RemoveNext());
+    if (source == NULL) break;
+    delete source;
+  }
+
+  delete fClientRTCPSourceRecords;
+}
+
+Boolean PassiveServerMediaSubsession::rtcpIsMuxed() {
+  if (fRTCPInstance == NULL) return False;
+
+  // Check whether RTP and RTCP use the same "groupsock" object:
+  return &(fRTPSink.groupsockBeingUsed()) == fRTCPInstance->RTCPgs();
+}
+
+char const*
+PassiveServerMediaSubsession::sdpLines() {
+  if (fSDPLines == NULL ) {
+    // Construct a set of SDP lines that describe this subsession:
+    // Use the components from "rtpSink":
+    Groupsock const& gs = fRTPSink.groupsockBeingUsed();
+    AddressString groupAddressStr(gs.groupAddress());
+    unsigned short portNum = ntohs(gs.port().num());
+    unsigned char ttl = gs.ttl();
+    unsigned char rtpPayloadType = fRTPSink.rtpPayloadType();
+    char const* mediaType = fRTPSink.sdpMediaType();
+    unsigned estBitrate
+      = fRTCPInstance == NULL ? 50 : fRTCPInstance->totSessionBW();
+    char* rtpmapLine = fRTPSink.rtpmapLine();
+    char const* rtcpmuxLine = rtcpIsMuxed() ? "a=rtcp-mux\r\n" : "";
+    char const* rangeLine = rangeSDPLine();
+    char const* auxSDPLine = fRTPSink.auxSDPLine();
+    if (auxSDPLine == NULL) auxSDPLine = "";
+
+    char const* const sdpFmt =
+      "m=%s %d RTP/AVP %d\r\n"
+      "c=IN IP4 %s/%d\r\n"
+      "b=AS:%u\r\n"
+      "%s"
+      "%s"
+      "%s"
+      "%s"
+      "a=control:%s\r\n";
+    unsigned sdpFmtSize = strlen(sdpFmt)
+      + strlen(mediaType) + 5 /* max short len */ + 3 /* max char len */
+      + strlen(groupAddressStr.val()) + 3 /* max char len */
+      + 20 /* max int len */
+      + strlen(rtpmapLine)
+      + strlen(rtcpmuxLine)
+      + strlen(rangeLine)
+      + strlen(auxSDPLine)
+      + strlen(trackId());
+    char* sdpLines = new char[sdpFmtSize];
+    sprintf(sdpLines, sdpFmt,
+	    mediaType, // m= <media>
+	    portNum, // m= <port>
+	    rtpPayloadType, // m= <fmt list>
+	    groupAddressStr.val(), // c= <connection address>
+	    ttl, // c= TTL
+	    estBitrate, // b=AS:<bandwidth>
+	    rtpmapLine, // a=rtpmap:... (if present)
+	    rtcpmuxLine, // a=rtcp-mux:... (if present)
+	    rangeLine, // a=range:... (if present)
+	    auxSDPLine, // optional extra SDP line
+	    trackId()); // a=control:<track-id>
+    delete[] (char*)rangeLine; delete[] rtpmapLine;
+
+    fSDPLines = strDup(sdpLines);
+    delete[] sdpLines;
+  }
+
+  return fSDPLines;
+}
+
+void PassiveServerMediaSubsession
+::getStreamParameters(unsigned clientSessionId,
+		      netAddressBits clientAddress,
+		      Port const& /*clientRTPPort*/,
+		      Port const& clientRTCPPort,
+		      int /*tcpSocketNum*/,
+		      unsigned char /*rtpChannelId*/,
+		      unsigned char /*rtcpChannelId*/,
+		      netAddressBits& destinationAddress,
+		      u_int8_t& destinationTTL,
+		      Boolean& isMulticast,
+		      Port& serverRTPPort,
+		      Port& serverRTCPPort,
+		      void*& streamToken) {
+  isMulticast = True;
+  Groupsock& gs = fRTPSink.groupsockBeingUsed();
+  if (destinationTTL == 255) destinationTTL = gs.ttl();
+  if (destinationAddress == 0) { // normal case
+    destinationAddress = gs.groupAddress().s_addr;
+  } else { // use the client-specified destination address instead:
+    struct in_addr destinationAddr; destinationAddr.s_addr = destinationAddress;
+    gs.changeDestinationParameters(destinationAddr, 0, destinationTTL);
+    if (fRTCPInstance != NULL) {
+      Groupsock* rtcpGS = fRTCPInstance->RTCPgs();
+      rtcpGS->changeDestinationParameters(destinationAddr, 0, destinationTTL);
+    }
+  }
+  serverRTPPort = gs.port();
+  if (fRTCPInstance != NULL) {
+    Groupsock* rtcpGS = fRTCPInstance->RTCPgs();
+    serverRTCPPort = rtcpGS->port();
+  }
+  streamToken = NULL; // not used
+
+  // Make a record of this client's source - for RTCP RR handling:
+  RTCPSourceRecord* source = new RTCPSourceRecord(clientAddress, clientRTCPPort);
+  fClientRTCPSourceRecords->Add((char const*)clientSessionId, source);
+}
+
+void PassiveServerMediaSubsession::startStream(unsigned clientSessionId,
+					       void* /*streamToken*/,
+					       TaskFunc* rtcpRRHandler,
+					       void* rtcpRRHandlerClientData,
+					       unsigned short& rtpSeqNum,
+					       unsigned& rtpTimestamp,
+					       ServerRequestAlternativeByteHandler* /*serverRequestAlternativeByteHandler*/,
+					       void* /*serverRequestAlternativeByteHandlerClientData*/) {
+  rtpSeqNum = fRTPSink.currentSeqNo();
+  rtpTimestamp = fRTPSink.presetNextTimestamp();
+
+  // Try to use a big send buffer for RTP -  at least 0.1 second of
+  // specified bandwidth and at least 50 KB
+  unsigned streamBitrate = fRTCPInstance == NULL ? 50 : fRTCPInstance->totSessionBW(); // in kbps
+  unsigned rtpBufSize = streamBitrate * 25 / 2; // 1 kbps * 0.1 s = 12.5 bytes
+  if (rtpBufSize < 50 * 1024) rtpBufSize = 50 * 1024;
+  increaseSendBufferTo(envir(), fRTPSink.groupsockBeingUsed().socketNum(), rtpBufSize);
+
+  if (fRTCPInstance != NULL) {
+    // Hack: Send a RTCP "SR" packet now, so that receivers will (likely) be able to
+    // get RTCP-synchronized presentation times immediately:
+    fRTCPInstance->sendReport();
+
+    // Set up the handler for incoming RTCP "RR" packets from this client:
+    RTCPSourceRecord* source = (RTCPSourceRecord*)(fClientRTCPSourceRecords->Lookup((char const*)clientSessionId));
+    if (source != NULL) {
+      fRTCPInstance->setSpecificRRHandler(source->addr, source->port,
+					  rtcpRRHandler, rtcpRRHandlerClientData);
+    }
+  }
+}
+
+float PassiveServerMediaSubsession::getCurrentNPT(void* streamToken) {
+  // Return the elapsed time between our "RTPSink"s creation time, and the current time:
+  struct timeval const& creationTime  = fRTPSink.creationTime(); // alias
+
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+
+  return (float)(timeNow.tv_sec - creationTime.tv_sec + (timeNow.tv_usec - creationTime.tv_usec)/1000000.0);
+}
+
+void PassiveServerMediaSubsession
+::getRTPSinkandRTCP(void* streamToken,
+		    RTPSink const*& rtpSink, RTCPInstance const*& rtcp) {
+  rtpSink = &fRTPSink;
+  rtcp = fRTCPInstance;
+}
+
+void PassiveServerMediaSubsession::deleteStream(unsigned clientSessionId, void*& /*streamToken*/) {
+  // Lookup and remove the 'RTCPSourceRecord' for this client.  Also turn off RTCP "RR" handling:
+  RTCPSourceRecord* source = (RTCPSourceRecord*)(fClientRTCPSourceRecords->Lookup((char const*)clientSessionId));
+  if (source != NULL) {
+    if (fRTCPInstance != NULL) {
+      fRTCPInstance->unsetSpecificRRHandler(source->addr, source->port);
+    }
+
+    fClientRTCPSourceRecords->Remove((char const*)clientSessionId);
+    delete source;
+  }
+}
diff --git a/liveMedia/ProxyServerMediaSession.cpp b/liveMedia/ProxyServerMediaSession.cpp
new file mode 100644
index 0000000..c58c998
--- /dev/null
+++ b/liveMedia/ProxyServerMediaSession.cpp
@@ -0,0 +1,943 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A subclass of "ServerMediaSession" that can be used to create a (unicast) RTSP servers that acts as a 'proxy' for
+// another (unicast or multicast) RTSP/RTP stream.
+// Implementation
+
+#include "liveMedia.hh"
+#include "RTSPCommon.hh"
+#include "GroupsockHelper.hh" // for "our_random()"
+
+#ifndef MILLION
+#define MILLION 1000000
+#endif
+
+// A "OnDemandServerMediaSubsession" subclass, used to implement a unicast RTSP server that's proxying another RTSP stream:
+
+class ProxyServerMediaSubsession: public OnDemandServerMediaSubsession {
+public:
+  ProxyServerMediaSubsession(MediaSubsession& mediaSubsession,
+			     portNumBits initialPortNum, Boolean multiplexRTCPWithRTP);
+  virtual ~ProxyServerMediaSubsession();
+
+  char const* codecName() const { return fCodecName; }
+  char const* url() const { return ((ProxyServerMediaSession*)fParentSession)->url(); }
+
+private: // redefined virtual functions
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+                                              unsigned& estBitrate);
+  virtual void closeStreamSource(FramedSource *inputSource);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+                                    FramedSource* inputSource);
+  virtual Groupsock* createGroupsock(struct in_addr const& addr, Port port);
+  virtual RTCPInstance* createRTCP(Groupsock* RTCPgs, unsigned totSessionBW, /* in kbps */
+				   unsigned char const* cname, RTPSink* sink);
+
+private:
+  static void subsessionByeHandler(void* clientData);
+  void subsessionByeHandler();
+
+  int verbosityLevel() const { return ((ProxyServerMediaSession*)fParentSession)->fVerbosityLevel; }
+
+private:
+  friend class ProxyRTSPClient;
+  MediaSubsession& fClientMediaSubsession; // the 'client' media subsession object that corresponds to this 'server' media subsession
+  char const* fCodecName;  // copied from "fClientMediaSubsession" once it's been set up
+  ProxyServerMediaSubsession* fNext; // used when we're part of a queue
+  Boolean fHaveSetupStream;
+};
+
+
+////////// ProxyServerMediaSession implementation //////////
+
+UsageEnvironment& operator<<(UsageEnvironment& env, const ProxyServerMediaSession& psms) { // used for debugging
+  return env << "ProxyServerMediaSession[" << psms.url() << "]";
+}
+
+ProxyRTSPClient*
+defaultCreateNewProxyRTSPClientFunc(ProxyServerMediaSession& ourServerMediaSession,
+				    char const* rtspURL,
+				    char const* username, char const* password,
+				    portNumBits tunnelOverHTTPPortNum, int verbosityLevel,
+				    int socketNumToServer) {
+  return new ProxyRTSPClient(ourServerMediaSession, rtspURL, username, password,
+			     tunnelOverHTTPPortNum, verbosityLevel, socketNumToServer);
+}
+
+ProxyServerMediaSession* ProxyServerMediaSession
+::createNew(UsageEnvironment& env, GenericMediaServer* ourMediaServer,
+	    char const* inputStreamURL, char const* streamName,
+	    char const* username, char const* password,
+	    portNumBits tunnelOverHTTPPortNum, int verbosityLevel, int socketNumToServer,
+	    MediaTranscodingTable* transcodingTable) {
+  return new ProxyServerMediaSession(env, ourMediaServer, inputStreamURL, streamName, username, password,
+				     tunnelOverHTTPPortNum, verbosityLevel, socketNumToServer,
+				     transcodingTable);
+}
+
+
+ProxyServerMediaSession
+::ProxyServerMediaSession(UsageEnvironment& env, GenericMediaServer* ourMediaServer,
+			  char const* inputStreamURL, char const* streamName,
+			  char const* username, char const* password,
+			  portNumBits tunnelOverHTTPPortNum, int verbosityLevel,
+			  int socketNumToServer,
+			  MediaTranscodingTable* transcodingTable,
+			  createNewProxyRTSPClientFunc* ourCreateNewProxyRTSPClientFunc,
+			  portNumBits initialPortNum, Boolean multiplexRTCPWithRTP)
+  : ServerMediaSession(env, streamName, NULL, NULL, False, NULL),
+    describeCompletedFlag(0), fOurMediaServer(ourMediaServer), fClientMediaSession(NULL),
+    fVerbosityLevel(verbosityLevel),
+    fPresentationTimeSessionNormalizer(new PresentationTimeSessionNormalizer(envir())),
+    fCreateNewProxyRTSPClientFunc(ourCreateNewProxyRTSPClientFunc),
+    fTranscodingTable(transcodingTable),
+    fInitialPortNum(initialPortNum), fMultiplexRTCPWithRTP(multiplexRTCPWithRTP) {
+  // Open a RTSP connection to the input stream, and send a "DESCRIBE" command.
+  // We'll use the SDP description in the response to set ourselves up.
+  fProxyRTSPClient
+    = (*fCreateNewProxyRTSPClientFunc)(*this, inputStreamURL, username, password,
+				       tunnelOverHTTPPortNum,
+				       verbosityLevel > 0 ? verbosityLevel-1 : verbosityLevel,
+				       socketNumToServer);
+  fProxyRTSPClient->sendDESCRIBE();
+}
+
+ProxyServerMediaSession::~ProxyServerMediaSession() {
+  if (fVerbosityLevel > 0) {
+    envir() << *this << "::~ProxyServerMediaSession()\n";
+  }
+
+  // Begin by sending a "TEARDOWN" command (without checking for a response):
+  if (fProxyRTSPClient != NULL && fClientMediaSession != NULL) {
+    fProxyRTSPClient->sendTeardownCommand(*fClientMediaSession, NULL, fProxyRTSPClient->auth());
+  }
+
+  // Then delete our state:
+  Medium::close(fClientMediaSession);
+  Medium::close(fProxyRTSPClient);
+  Medium::close(fPresentationTimeSessionNormalizer);
+}
+
+char const* ProxyServerMediaSession::url() const {
+  return fProxyRTSPClient == NULL ? NULL : fProxyRTSPClient->url();
+}
+
+Groupsock* ProxyServerMediaSession::createGroupsock(struct in_addr const& addr, Port port) {
+  // Default implementation; may be redefined by subclasses:
+  return new Groupsock(envir(), addr, port, 255);
+}
+
+RTCPInstance* ProxyServerMediaSession
+::createRTCP(Groupsock* RTCPgs, unsigned totSessionBW, /* in kbps */
+	     unsigned char const* cname, RTPSink* sink) {
+  // Default implementation; may be redefined by subclasses:
+  return RTCPInstance::createNew(envir(), RTCPgs, totSessionBW, cname, sink, NULL/*we're a server*/);
+}
+
+Boolean ProxyServerMediaSession::allowProxyingForSubsession(MediaSubsession const& /*mss*/) {
+  // Default implementation
+  return True;
+}
+
+void ProxyServerMediaSession::continueAfterDESCRIBE(char const* sdpDescription) {
+  describeCompletedFlag = 1;
+
+  // Create a (client) "MediaSession" object from the stream's SDP description ("resultString"), then iterate through its
+  // "MediaSubsession" objects, to set up corresponding "ServerMediaSubsession" objects that we'll use to serve the stream's tracks.
+  do {
+    fClientMediaSession = MediaSession::createNew(envir(), sdpDescription);
+    if (fClientMediaSession == NULL) break;
+
+    MediaSubsessionIterator iter(*fClientMediaSession);
+    for (MediaSubsession* mss = iter.next(); mss != NULL; mss = iter.next()) {
+      if (!allowProxyingForSubsession(*mss)) continue;
+
+      ServerMediaSubsession* smss
+	= new ProxyServerMediaSubsession(*mss, fInitialPortNum, fMultiplexRTCPWithRTP);
+      addSubsession(smss);
+      if (fVerbosityLevel > 0) {
+	envir() << *this << " added new \"ProxyServerMediaSubsession\" for "
+		<< mss->protocolName() << "/" << mss->mediumName() << "/" << mss->codecName() << " track\n";
+      }
+    }
+  } while (0);
+}
+
+void ProxyServerMediaSession::resetDESCRIBEState() {
+  // Delete all of our "ProxyServerMediaSubsession"s; they'll get set up again once we get a response to the new "DESCRIBE".
+  if (fOurMediaServer != NULL) {
+    // First, close any client connections that may have already been set up:
+    fOurMediaServer->closeAllClientSessionsForServerMediaSession(this);
+  }
+  deleteAllSubsessions();
+
+  // Finally, delete the client "MediaSession" object that we had set up after receiving the response to the previous "DESCRIBE":
+  Medium::close(fClientMediaSession); fClientMediaSession = NULL;
+}
+
+///////// RTSP 'response handlers' //////////
+
+static void continueAfterDESCRIBE(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  char const* res;
+
+  if (resultCode == 0) {
+    // The "DESCRIBE" command succeeded, so "resultString" should be the stream's SDP description.
+    res = resultString;
+  } else {
+    // The "DESCRIBE" command failed.
+    res = NULL;
+  }
+  ((ProxyRTSPClient*)rtspClient)->continueAfterDESCRIBE(res);
+  delete[] resultString;
+}
+
+static void continueAfterSETUP(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  ((ProxyRTSPClient*)rtspClient)->continueAfterSETUP(resultCode);
+  delete[] resultString;
+}
+
+static void continueAfterPLAY(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  ((ProxyRTSPClient*)rtspClient)->continueAfterPLAY(resultCode);
+  delete[] resultString;
+}
+
+static void continueAfterOPTIONS(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  Boolean serverSupportsGetParameter = False;
+  if (resultCode == 0) {
+    // Note whether the server told us that it supports the "GET_PARAMETER" command:
+    serverSupportsGetParameter = RTSPOptionIsSupported("GET_PARAMETER", resultString);
+  } 
+  ((ProxyRTSPClient*)rtspClient)->continueAfterLivenessCommand(resultCode, serverSupportsGetParameter);
+  delete[] resultString;
+}
+
+#ifdef SEND_GET_PARAMETER_IF_SUPPORTED
+static void continueAfterGET_PARAMETER(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  ((ProxyRTSPClient*)rtspClient)->continueAfterLivenessCommand(resultCode, True);
+  delete[] resultString;
+}
+#endif
+
+
+////////// "ProxyRTSPClient" implementation /////////
+
+UsageEnvironment& operator<<(UsageEnvironment& env, const ProxyRTSPClient& proxyRTSPClient) { // used for debugging
+  return env << "ProxyRTSPClient[" << proxyRTSPClient.url() << "]";
+}
+
+ProxyRTSPClient::ProxyRTSPClient(ProxyServerMediaSession& ourServerMediaSession, char const* rtspURL,
+				 char const* username, char const* password,
+				 portNumBits tunnelOverHTTPPortNum, int verbosityLevel, int socketNumToServer)
+  : RTSPClient(ourServerMediaSession.envir(), rtspURL, verbosityLevel, "ProxyRTSPClient",
+	       tunnelOverHTTPPortNum == (portNumBits)(~0) ? 0 : tunnelOverHTTPPortNum, socketNumToServer),
+    fOurServerMediaSession(ourServerMediaSession), fOurURL(strDup(rtspURL)), fStreamRTPOverTCP(tunnelOverHTTPPortNum != 0),
+    fSetupQueueHead(NULL), fSetupQueueTail(NULL), fNumSetupsDone(0), fNextDESCRIBEDelay(1),
+    fServerSupportsGetParameter(False), fLastCommandWasPLAY(False), fDoneDESCRIBE(False),
+    fLivenessCommandTask(NULL), fDESCRIBECommandTask(NULL), fSubsessionTimerTask(NULL), fResetTask(NULL) {
+  if (username != NULL && password != NULL) {
+    fOurAuthenticator = new Authenticator(username, password);
+  } else {
+    fOurAuthenticator = NULL;
+  }
+}
+
+void ProxyRTSPClient::reset() {
+  envir().taskScheduler().unscheduleDelayedTask(fLivenessCommandTask);
+  envir().taskScheduler().unscheduleDelayedTask(fDESCRIBECommandTask);
+  envir().taskScheduler().unscheduleDelayedTask(fSubsessionTimerTask);
+  envir().taskScheduler().unscheduleDelayedTask(fResetTask);
+
+  fSetupQueueHead = fSetupQueueTail = NULL;
+  fNumSetupsDone = 0;
+  fNextDESCRIBEDelay = 1;
+  fLastCommandWasPLAY = False;
+  fDoneDESCRIBE = False;
+
+  RTSPClient::reset();
+}
+
+ProxyRTSPClient::~ProxyRTSPClient() {
+  reset();
+
+  delete fOurAuthenticator;
+  delete[] fOurURL;
+}
+
+int ProxyRTSPClient::connectToServer(int socketNum, portNumBits remotePortNum) {
+  int res;
+  res = RTSPClient::connectToServer(socketNum, remotePortNum);
+  
+  if (res == 0 && fDoneDESCRIBE && fStreamRTPOverTCP) {
+    if (fVerbosityLevel > 0) {
+      envir() << "ProxyRTSPClient::connectToServer calling scheduleReset()\n";
+    }
+    scheduleReset();
+  }
+  
+  return res;
+}
+
+void ProxyRTSPClient::continueAfterDESCRIBE(char const* sdpDescription) {
+  if (sdpDescription != NULL) {
+    fOurServerMediaSession.continueAfterDESCRIBE(sdpDescription);
+
+    // Unlike most RTSP streams, there might be a long delay between this "DESCRIBE" command (to the downstream server) and the
+    // subsequent "SETUP"/"PLAY" - which doesn't occur until the first time that a client requests the stream.
+    // To prevent the proxied connection (between us and the downstream server) from timing out, we send periodic 'liveness'
+    // ("OPTIONS" or "GET_PARAMETER") commands.  (The usual RTCP liveness mechanism wouldn't work here, because RTCP packets
+    // don't get sent until after the "PLAY" command.)
+    scheduleLivenessCommand();
+  } else {
+    // The "DESCRIBE" command failed, most likely because the server or the stream is not yet running.
+    // Reschedule another "DESCRIBE" command to take place later:
+    scheduleDESCRIBECommand();
+  }
+  fDoneDESCRIBE = True;
+}
+
+void ProxyRTSPClient::continueAfterLivenessCommand(int resultCode, Boolean serverSupportsGetParameter) {
+  if (resultCode != 0) {
+    // The periodic 'liveness' command failed, suggesting that the back-end stream is no longer alive.
+    // We handle this by resetting our connection state with this server.  Any current clients will be closed, but
+    // subsequent clients will cause new RTSP "SETUP"s and "PLAY"s to get done, restarting the stream.
+    // Then continue by sending more "DESCRIBE" commands, to try to restore the stream.
+
+    fServerSupportsGetParameter = False; // until we learn otherwise, in response to a future "OPTIONS" command
+
+    if (resultCode < 0) {
+      // The 'liveness' command failed without getting a response from the server (otherwise "resultCode" would have been > 0).
+      // This suggests that the RTSP connection itself has failed.  Print this error code, in case it's useful for debugging:
+      if (fVerbosityLevel > 0) {
+	envir() << *this << ": lost connection to server ('errno': " << -resultCode << ").  Scheduling reset...\n";
+      }
+    }
+
+    scheduleReset();
+    return;
+  }
+
+  fServerSupportsGetParameter = serverSupportsGetParameter;
+
+  // Schedule the next 'liveness' command (i.e., to tell the back-end server that we're still alive):
+  scheduleLivenessCommand();
+}
+
+#define SUBSESSION_TIMEOUT_SECONDS 5 // how many seconds to wait for the last track's "SETUP" to be done (note below)
+
+void ProxyRTSPClient::continueAfterSETUP(int resultCode) {
+  if (resultCode != 0) {
+    // The "SETUP" command failed, so arrange to reset the state. (We don't do this now, because it deletes the
+    // "ProxyServerMediaSubsession", and we can't do that during "ProxyServerMediaSubsession::createNewStreamSource()".)
+    scheduleReset();
+    return;
+  }
+
+  if (fVerbosityLevel > 0) {
+    envir() << *this << "::continueAfterSETUP(): head codec: " << fSetupQueueHead->codecName()
+	    << "; numSubsessions " << fSetupQueueHead->fParentSession->numSubsessions() << "\n\tqueue:";
+    for (ProxyServerMediaSubsession* p = fSetupQueueHead; p != NULL; p = p->fNext) {
+      envir() << "\t" << p->codecName();
+    }
+    envir() << "\n";
+  }
+  envir().taskScheduler().unscheduleDelayedTask(fSubsessionTimerTask); // in case it had been set
+
+  // Dequeue the first "ProxyServerMediaSubsession" from our 'SETUP queue'.  It will be the one for which this "SETUP" was done:
+  ProxyServerMediaSubsession* smss = fSetupQueueHead; // Assert: != NULL
+  fSetupQueueHead = fSetupQueueHead->fNext;
+  if (fSetupQueueHead == NULL) fSetupQueueTail = NULL;
+
+  if (fSetupQueueHead != NULL) {
+    // There are still entries in the queue, for tracks for which we have still to do a "SETUP".
+    // "SETUP" the first of these now:
+    sendSetupCommand(fSetupQueueHead->fClientMediaSubsession, ::continueAfterSETUP,
+		     False, fStreamRTPOverTCP, False, fOurAuthenticator);
+    ++fNumSetupsDone;
+    fSetupQueueHead->fHaveSetupStream = True;
+  } else {
+    if (fNumSetupsDone >= smss->fParentSession->numSubsessions()) {
+      // We've now finished setting up each of our subsessions (i.e., 'tracks').
+      // Continue by sending a "PLAY" command (an 'aggregate' "PLAY" command, on the whole session):
+      sendPlayCommand(smss->fClientMediaSubsession.parentSession(), ::continueAfterPLAY, -1.0f, -1.0f, 1.0f, fOurAuthenticator);
+          // the "-1.0f" "start" parameter causes the "PLAY" to be sent without a "Range:" header, in case we'd already done
+          // a "PLAY" before (as a result of a 'subsession timeout' (note below))
+      fLastCommandWasPLAY = True;
+    } else {
+      // Some of this session's subsessions (i.e., 'tracks') remain to be "SETUP".  They might get "SETUP" very soon, but it's
+      // also possible - if the remote client chose to play only some of the session's tracks - that they might not.
+      // To allow for this possibility, we set a timer.  If the timer expires without the remaining subsessions getting "SETUP",
+      // then we send a "PLAY" command anyway:
+      fSubsessionTimerTask
+	= envir().taskScheduler().scheduleDelayedTask(SUBSESSION_TIMEOUT_SECONDS*MILLION, (TaskFunc*)subsessionTimeout, this);
+    }
+  }
+}
+
+void ProxyRTSPClient::continueAfterPLAY(int resultCode) {
+  if (resultCode != 0) {
+    // The "PLAY" command failed, so arrange to reset the state. (We don't do this now, because it deletes the
+    // "ProxyServerMediaSubsession", and we can't do that during "ProxyServerMediaSubsession::createNewStreamSource()".)
+    scheduleReset();
+    return;
+  }
+}
+
+void ProxyRTSPClient::scheduleLivenessCommand() {
+  // Delay a random time before sending another 'liveness' command.
+  unsigned delayMax = sessionTimeoutParameter(); // if the server specified a maximum time between 'liveness' probes, then use that
+  if (delayMax == 0) {
+    delayMax = 60;
+  }
+
+  // Choose a random time from [delayMax/2,delayMax-1) seconds:
+  unsigned const us_1stPart = delayMax*500000;
+  unsigned uSecondsToDelay;
+  if (us_1stPart <= 1000000) {
+    uSecondsToDelay = us_1stPart;
+  } else {
+    unsigned const us_2ndPart = us_1stPart-1000000;
+    uSecondsToDelay = us_1stPart + (us_2ndPart*our_random())%us_2ndPart;
+  }
+  fLivenessCommandTask = envir().taskScheduler().scheduleDelayedTask(uSecondsToDelay, sendLivenessCommand, this);
+}
+
+void ProxyRTSPClient::sendLivenessCommand(void* clientData) {
+  ProxyRTSPClient* rtspClient = (ProxyRTSPClient*)clientData;
+  rtspClient->fLivenessCommandTask = NULL;
+
+  // Note.  By default, we do not send "GET_PARAMETER" as our 'liveness notification' command, even if the server previously
+  // indicated (in its response to our earlier "OPTIONS" command) that it supported "GET_PARAMETER".  This is because
+  // "GET_PARAMETER" crashes some camera servers (even though they claimed to support "GET_PARAMETER").
+#ifdef SEND_GET_PARAMETER_IF_SUPPORTED
+  MediaSession* sess = rtspClient->fOurServerMediaSession.fClientMediaSession;
+
+  if (rtspClient->fServerSupportsGetParameter && rtspClient->fNumSetupsDone > 0 && sess != NULL) {
+    rtspClient->sendGetParameterCommand(*sess, ::continueAfterGET_PARAMETER, "", rtspClient->auth());
+  } else {
+#endif
+    rtspClient->sendOptionsCommand(::continueAfterOPTIONS, rtspClient->auth());
+#ifdef SEND_GET_PARAMETER_IF_SUPPORTED
+  }
+#endif
+}
+
+void ProxyRTSPClient::scheduleReset() {
+  if (fVerbosityLevel > 0) {
+    envir() << "ProxyRTSPClient::scheduleReset\n";
+  }
+  envir().taskScheduler().rescheduleDelayedTask(fResetTask, 0, doReset, this);
+}
+
+void ProxyRTSPClient::doReset() {
+  fResetTask = NULL;
+  if (fVerbosityLevel > 0) {
+    envir() << *this << "::doReset\n";
+  }
+
+  reset();
+  fOurServerMediaSession.resetDESCRIBEState();
+
+  setBaseURL(fOurURL); // because we'll be sending an initial "DESCRIBE" all over again
+  sendDESCRIBE();
+}
+
+void ProxyRTSPClient::doReset(void* clientData) {
+  ProxyRTSPClient* rtspClient = (ProxyRTSPClient*)clientData;
+  rtspClient->doReset();
+}
+
+void ProxyRTSPClient::scheduleDESCRIBECommand() {
+  // Delay 1s, 2s, 4s, 8s ... 256s until sending the next "DESCRIBE".  Then, keep delaying a random time from [256..511] seconds:
+  unsigned secondsToDelay;
+  if (fNextDESCRIBEDelay <= 256) {
+    secondsToDelay = fNextDESCRIBEDelay;
+    fNextDESCRIBEDelay *= 2;
+  } else {
+    secondsToDelay = 256 + (our_random()&0xFF); // [256..511] seconds
+  }
+
+  if (fVerbosityLevel > 0) {
+    envir() << *this << ": RTSP \"DESCRIBE\" command failed; trying again in " << secondsToDelay << " seconds\n";
+  }
+  fDESCRIBECommandTask = envir().taskScheduler().scheduleDelayedTask(secondsToDelay*MILLION, sendDESCRIBE, this);
+}
+
+void ProxyRTSPClient::sendDESCRIBE(void* clientData) {
+  ProxyRTSPClient* rtspClient = (ProxyRTSPClient*)clientData;
+  if (rtspClient != NULL) {
+    rtspClient->fDESCRIBECommandTask = NULL;
+    rtspClient->sendDESCRIBE();
+  }
+}
+
+void ProxyRTSPClient::sendDESCRIBE() {
+  sendDescribeCommand(::continueAfterDESCRIBE, auth());
+}
+
+void ProxyRTSPClient::subsessionTimeout(void* clientData) {
+  ((ProxyRTSPClient*)clientData)->handleSubsessionTimeout();
+}
+
+void ProxyRTSPClient::handleSubsessionTimeout() {
+  fSubsessionTimerTask = NULL;
+  // We still have one or more subsessions ('tracks') left to "SETUP".  But we can't wait any longer for them.  Send a "PLAY" now:
+  MediaSession* sess = fOurServerMediaSession.fClientMediaSession;
+  if (sess != NULL) sendPlayCommand(*sess, ::continueAfterPLAY, -1.0f, -1.0f, 1.0f, fOurAuthenticator);
+  fLastCommandWasPLAY = True;
+}
+
+
+//////// "ProxyServerMediaSubsession" implementation //////////
+
+ProxyServerMediaSubsession
+::ProxyServerMediaSubsession(MediaSubsession& mediaSubsession,
+			     portNumBits initialPortNum, Boolean multiplexRTCPWithRTP)
+  : OnDemandServerMediaSubsession(mediaSubsession.parentSession().envir(), True/*reuseFirstSource*/,
+				  initialPortNum, multiplexRTCPWithRTP),
+    fClientMediaSubsession(mediaSubsession), fCodecName(strDup(mediaSubsession.codecName())),
+    fNext(NULL), fHaveSetupStream(False) {
+}
+
+UsageEnvironment& operator<<(UsageEnvironment& env, const ProxyServerMediaSubsession& psmss) { // used for debugging
+  return env << "ProxyServerMediaSubsession[" << psmss.url() << "," << psmss.codecName() << "]";
+}
+
+ProxyServerMediaSubsession::~ProxyServerMediaSubsession() {
+  if (verbosityLevel() > 0) {
+    envir() << *this << "::~ProxyServerMediaSubsession()\n";
+  }
+
+  delete[] (char*)fCodecName;
+}
+
+FramedSource* ProxyServerMediaSubsession::createNewStreamSource(unsigned clientSessionId, unsigned& estBitrate) {
+  ProxyServerMediaSession* const sms = (ProxyServerMediaSession*)fParentSession;
+
+  if (verbosityLevel() > 0) {
+    envir() << *this << "::createNewStreamSource(session id " << clientSessionId << ")\n";
+  }
+
+  // If we haven't yet created a data source from our 'media subsession' object, initiate() it to do so:
+  if (fClientMediaSubsession.readSource() == NULL) {
+    if (sms->fTranscodingTable == NULL || !sms->fTranscodingTable->weWillTranscode("audio", "MPA-ROBUST")) fClientMediaSubsession.receiveRawMP3ADUs(); // hack for proxying MPA-ROBUST streams
+    if (sms->fTranscodingTable == NULL || !sms->fTranscodingTable->weWillTranscode("video", "JPEG")) fClientMediaSubsession.receiveRawJPEGFrames(); // hack for proxying JPEG/RTP streams.
+    fClientMediaSubsession.initiate();
+    if (verbosityLevel() > 0) {
+      envir() << "\tInitiated: " << *this << "\n";
+    }
+
+    if (fClientMediaSubsession.readSource() != NULL) {
+      // First, check whether we have defined a 'transcoder' filter to be used with this codec:
+      if (sms->fTranscodingTable != NULL) {
+	char* outputCodecName;
+	FramedFilter* transcoder
+	  = sms->fTranscodingTable->lookupTranscoder(fClientMediaSubsession, outputCodecName);
+	if (transcoder != NULL) {
+	  fClientMediaSubsession.addFilter(transcoder);
+	  delete[] (char*)fCodecName; fCodecName = outputCodecName;
+	}
+      }
+
+      // Then, add to the front of all data sources a filter that will 'normalize' their frames'
+      // presentation times, before the frames get re-transmitted by our server:
+      FramedFilter* normalizerFilter = sms->fPresentationTimeSessionNormalizer
+	->createNewPresentationTimeSubsessionNormalizer(fClientMediaSubsession.readSource(),
+							fClientMediaSubsession.rtpSource(),
+							fCodecName);
+      fClientMediaSubsession.addFilter(normalizerFilter);
+
+      // Some data sources require a 'framer' object to be added, before they can be fed into
+      // a "RTPSink".  Adjust for this now:
+      if (strcmp(fCodecName, "H264") == 0) {
+	fClientMediaSubsession.addFilter(H264VideoStreamDiscreteFramer
+					 ::createNew(envir(), fClientMediaSubsession.readSource()));
+      } else if (strcmp(fCodecName, "H265") == 0) {
+	fClientMediaSubsession.addFilter(H265VideoStreamDiscreteFramer
+					 ::createNew(envir(), fClientMediaSubsession.readSource()));
+      } else if (strcmp(fCodecName, "MP4V-ES") == 0) {
+	fClientMediaSubsession.addFilter(MPEG4VideoStreamDiscreteFramer
+					 ::createNew(envir(), fClientMediaSubsession.readSource(),
+						     True/* leave PTs unmodified*/));
+      } else if (strcmp(fCodecName, "MPV") == 0) {
+	fClientMediaSubsession.addFilter(MPEG1or2VideoStreamDiscreteFramer
+					 ::createNew(envir(), fClientMediaSubsession.readSource(),
+						     False, 5.0, True/* leave PTs unmodified*/));
+      } else if (strcmp(fCodecName, "DV") == 0) {
+	fClientMediaSubsession.addFilter(DVVideoStreamFramer
+					 ::createNew(envir(), fClientMediaSubsession.readSource(),
+						     False, True/* leave PTs unmodified*/));
+      }
+    }
+
+    if (fClientMediaSubsession.rtcpInstance() != NULL) {
+      fClientMediaSubsession.rtcpInstance()->setByeHandler(subsessionByeHandler, this);
+    }
+  }
+
+  ProxyRTSPClient* const proxyRTSPClient = sms->fProxyRTSPClient;
+  if (clientSessionId != 0) {
+    // We're being called as a result of implementing a RTSP "SETUP".
+    if (!fHaveSetupStream) {
+      // This is our first "SETUP".  Send RTSP "SETUP" and later "PLAY" commands to the proxied server, to start streaming:
+      // (Before sending "SETUP", enqueue ourselves on the "RTSPClient"s 'SETUP queue', so we'll be able to get the correct
+      //  "ProxyServerMediaSubsession" to handle the response.  (Note that responses come back in the same order as requests.))
+      Boolean queueWasEmpty = proxyRTSPClient->fSetupQueueHead == NULL;
+      if (queueWasEmpty) {
+	proxyRTSPClient->fSetupQueueHead = this;
+	proxyRTSPClient->fSetupQueueTail = this;
+      } else {
+	// Add ourself to the "RTSPClient"s 'SETUP queue' (if we're not already on it):
+	ProxyServerMediaSubsession* psms;
+	for (psms = proxyRTSPClient->fSetupQueueHead; psms != NULL; psms = psms->fNext) {
+	  if (psms == this) break;
+	}
+	if (psms == NULL) {
+	    proxyRTSPClient->fSetupQueueTail->fNext = this;
+	    proxyRTSPClient->fSetupQueueTail = this;
+	}
+      }
+
+      // Hack: If there's already a pending "SETUP" request, don't send this track's "SETUP" right away, because
+      // the server might not properly handle 'pipelined' requests.  Instead, wait until after previous "SETUP" responses come back.
+      if (queueWasEmpty) {
+	proxyRTSPClient->sendSetupCommand(fClientMediaSubsession, ::continueAfterSETUP,
+					  False, proxyRTSPClient->fStreamRTPOverTCP, False, proxyRTSPClient->auth());
+	++proxyRTSPClient->fNumSetupsDone;
+	fHaveSetupStream = True;
+      }
+    } else {
+      // This is a "SETUP" from a new client.  We know that there are no other currently active clients (otherwise we wouldn't
+      // have been called here), so we know that the substream was previously "PAUSE"d.  Send "PLAY" downstream once again,
+      // to resume the stream:
+      if (!proxyRTSPClient->fLastCommandWasPLAY) { // so that we send only one "PLAY"; not one for each subsession
+	proxyRTSPClient->sendPlayCommand(fClientMediaSubsession.parentSession(), ::continueAfterPLAY, -1.0f/*resume from previous point*/,
+					 -1.0f, 1.0f, proxyRTSPClient->auth());
+	proxyRTSPClient->fLastCommandWasPLAY = True;
+      }
+    }
+  }
+
+  estBitrate = fClientMediaSubsession.bandwidth();
+  if (estBitrate == 0) estBitrate = 50; // kbps, estimate
+  return fClientMediaSubsession.readSource();
+}
+
+void ProxyServerMediaSubsession::closeStreamSource(FramedSource* inputSource) {
+  if (verbosityLevel() > 0) {
+    envir() << *this << "::closeStreamSource()\n";
+  }
+  // Because there's only one input source for this 'subsession' (regardless of how many downstream clients are proxying it),
+  // we don't close the input source here.  (Instead, we wait until *this* object gets deleted.)
+  // However, because (as evidenced by this function having been called) we no longer have any clients accessing the stream,
+  // then we "PAUSE" the downstream proxied stream, until a new client arrives:
+  if (fHaveSetupStream) {
+    ProxyServerMediaSession* const sms = (ProxyServerMediaSession*)fParentSession;
+    ProxyRTSPClient* const proxyRTSPClient = sms->fProxyRTSPClient;
+    if (proxyRTSPClient->fLastCommandWasPLAY) { // so that we send only one "PAUSE"; not one for each subsession
+      if (fParentSession->referenceCount() > 1) {
+	// There are other client(s) still streaming other subsessions of this stream.
+	// Therefore, we don't send a "PAUSE" for the whole stream, but only for the sub-stream:
+	proxyRTSPClient->sendPauseCommand(fClientMediaSubsession, NULL, proxyRTSPClient->auth());
+      } else {
+	// Normal case: There are no other client still streaming (parts of) this stream.
+	// Send a "PAUSE" for the whole stream.
+	proxyRTSPClient->sendPauseCommand(fClientMediaSubsession.parentSession(), NULL, proxyRTSPClient->auth());
+	proxyRTSPClient->fLastCommandWasPLAY = False;
+      }
+    }
+  }
+}
+
+RTPSink* ProxyServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic, FramedSource* inputSource) {
+  if (verbosityLevel() > 0) {
+    envir() << *this << "::createNewRTPSink()\n";
+  }
+
+  // Create (and return) the appropriate "RTPSink" object for our codec:
+  // (Note: The configuration string might not be correct if a transcoder is used. FIX!) #####
+  RTPSink* newSink;
+  if (strcmp(fCodecName, "AC3") == 0 || strcmp(fCodecName, "EAC3") == 0) {
+    newSink = AC3AudioRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					 fClientMediaSubsession.rtpTimestampFrequency()); 
+#if 0 // This code does not work; do *not* enable it:
+  } else if (strcmp(fCodecName, "AMR") == 0 || strcmp(fCodecName, "AMR-WB") == 0) {
+    Boolean isWideband = strcmp(fCodecName, "AMR-WB") == 0;
+    newSink = AMRAudioRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					 isWideband, fClientMediaSubsession.numChannels());
+#endif
+  } else if (strcmp(fCodecName, "DV") == 0) {
+    newSink = DVVideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+  } else if (strcmp(fCodecName, "GSM") == 0) {
+    newSink = GSMAudioRTPSink::createNew(envir(), rtpGroupsock);
+  } else if (strcmp(fCodecName, "H263-1998") == 0 || strcmp(fCodecName, "H263-2000") == 0) {
+    newSink = H263plusVideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					      fClientMediaSubsession.rtpTimestampFrequency()); 
+  } else if (strcmp(fCodecName, "H264") == 0) {
+    newSink = H264VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					  fClientMediaSubsession.fmtp_spropparametersets());
+  } else if (strcmp(fCodecName, "H265") == 0) {
+    newSink = H265VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					  fClientMediaSubsession.fmtp_spropvps(),
+					  fClientMediaSubsession.fmtp_spropsps(),
+					  fClientMediaSubsession.fmtp_sproppps());
+  } else if (strcmp(fCodecName, "JPEG") == 0) {
+    newSink = SimpleRTPSink::createNew(envir(), rtpGroupsock, 26, 90000, "video", "JPEG",
+				       1/*numChannels*/, False/*allowMultipleFramesPerPacket*/, False/*doNormalMBitRule*/);
+  } else if (strcmp(fCodecName, "MP4A-LATM") == 0) {
+    newSink = MPEG4LATMAudioRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					       fClientMediaSubsession.rtpTimestampFrequency(),
+					       fClientMediaSubsession.fmtp_config(),
+					       fClientMediaSubsession.numChannels());
+  } else if (strcmp(fCodecName, "MP4V-ES") == 0) {
+    newSink = MPEG4ESVideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					     fClientMediaSubsession.rtpTimestampFrequency(),
+					     fClientMediaSubsession.attrVal_unsigned("profile-level-id"),
+					     fClientMediaSubsession.fmtp_config()); 
+  } else if (strcmp(fCodecName, "MPA") == 0) {
+    newSink = MPEG1or2AudioRTPSink::createNew(envir(), rtpGroupsock);
+  } else if (strcmp(fCodecName, "MPA-ROBUST") == 0) {
+    newSink = MP3ADURTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+  } else if (strcmp(fCodecName, "MPEG4-GENERIC") == 0) {
+    newSink = MPEG4GenericRTPSink::createNew(envir(), rtpGroupsock,
+					     rtpPayloadTypeIfDynamic, fClientMediaSubsession.rtpTimestampFrequency(),
+					     fClientMediaSubsession.mediumName(),
+					     fClientMediaSubsession.attrVal_str("mode"),
+					     fClientMediaSubsession.fmtp_config(), fClientMediaSubsession.numChannels());
+  } else if (strcmp(fCodecName, "MPV") == 0) {
+    newSink = MPEG1or2VideoRTPSink::createNew(envir(), rtpGroupsock);
+  } else if (strcmp(fCodecName, "OPUS") == 0) {
+    newSink = SimpleRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+				       48000, "audio", "OPUS", 2, False/*only 1 Opus 'packet' in each RTP packet*/);
+  } else if (strcmp(fCodecName, "T140") == 0) {
+    newSink = T140TextRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+  } else if (strcmp(fCodecName, "THEORA") == 0) {
+    newSink = TheoraVideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					    fClientMediaSubsession.fmtp_config()); 
+  } else if (strcmp(fCodecName, "VORBIS") == 0) {
+    newSink = VorbisAudioRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic,
+					    fClientMediaSubsession.rtpTimestampFrequency(), fClientMediaSubsession.numChannels(),
+					    fClientMediaSubsession.fmtp_config()); 
+  } else if (strcmp(fCodecName, "VP8") == 0) {
+    newSink = VP8VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+  } else if (strcmp(fCodecName, "VP9") == 0) {
+    newSink = VP9VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
+  } else if (strcmp(fCodecName, "AMR") == 0 || strcmp(fCodecName, "AMR-WB") == 0) {
+    // Proxying of these codecs is currently *not* supported, because the data received by the "RTPSource" object is not in a
+    // form that can be fed directly into a corresponding "RTPSink" object.
+    if (verbosityLevel() > 0) {
+      envir() << "\treturns NULL (because we currently don't support the proxying of \""
+	      << fClientMediaSubsession.mediumName() << "/" << fCodecName << "\" streams)\n";
+    }
+    return NULL;
+  } else if (strcmp(fCodecName, "QCELP") == 0 ||
+	     strcmp(fCodecName, "H261") == 0 ||
+	     strcmp(fCodecName, "H263-1998") == 0 || strcmp(fCodecName, "H263-2000") == 0 ||
+	     strcmp(fCodecName, "X-QT") == 0 || strcmp(fCodecName, "X-QUICKTIME") == 0) {
+    // This codec requires a specialized RTP payload format; however, we don't yet have an appropriate "RTPSink" subclass for it:
+    if (verbosityLevel() > 0) {
+      envir() << "\treturns NULL (because we don't have a \"RTPSink\" subclass for this RTP payload format)\n";
+    }
+    return NULL;
+  } else {
+    // This codec is assumed to have a simple RTP payload format that can be implemented just with a "SimpleRTPSink":
+    Boolean allowMultipleFramesPerPacket = True; // by default
+    Boolean doNormalMBitRule = True; // by default
+    // Some codecs change the above default parameters:
+    if (strcmp(fCodecName, "MP2T") == 0) {
+      doNormalMBitRule = False; // no RTP 'M' bit
+    }
+    newSink = SimpleRTPSink::createNew(envir(), rtpGroupsock,
+				       rtpPayloadTypeIfDynamic, fClientMediaSubsession.rtpTimestampFrequency(),
+				       fClientMediaSubsession.mediumName(), fCodecName,
+				       fClientMediaSubsession.numChannels(), allowMultipleFramesPerPacket, doNormalMBitRule);
+  }
+
+  // Because our relayed frames' presentation times are inaccurate until the input frames have been RTCP-synchronized,
+  // we temporarily disable RTCP "SR" reports for this "RTPSink" object:
+  newSink->enableRTCPReports() = False;
+
+  // Also tell our "PresentationTimeSubsessionNormalizer" object about the "RTPSink", so it can enable RTCP "SR" reports later:
+  PresentationTimeSubsessionNormalizer* ssNormalizer;
+  if (strcmp(fCodecName, "H264") == 0 ||
+      strcmp(fCodecName, "H265") == 0 ||
+      strcmp(fCodecName, "MP4V-ES") == 0 ||
+      strcmp(fCodecName, "MPV") == 0 ||
+      strcmp(fCodecName, "DV") == 0) {
+    // There was a separate 'framer' object in front of the "PresentationTimeSubsessionNormalizer", so go back one object to get it:
+    ssNormalizer = (PresentationTimeSubsessionNormalizer*)(((FramedFilter*)inputSource)->inputSource());
+  } else {
+    ssNormalizer = (PresentationTimeSubsessionNormalizer*)inputSource;
+  }
+  ssNormalizer->setRTPSink(newSink);
+
+  return newSink;
+}
+
+Groupsock* ProxyServerMediaSubsession::createGroupsock(struct in_addr const& addr, Port port) {
+  ProxyServerMediaSession* parentSession = (ProxyServerMediaSession*)fParentSession;
+  return parentSession->createGroupsock(addr, port);
+}
+
+RTCPInstance* ProxyServerMediaSubsession
+::createRTCP(Groupsock* RTCPgs, unsigned totSessionBW, /* in kbps */
+	     unsigned char const* cname, RTPSink* sink) {
+  ProxyServerMediaSession* parentSession = (ProxyServerMediaSession*)fParentSession;
+  return parentSession->createRTCP(RTCPgs, totSessionBW, cname, sink);
+}
+
+void ProxyServerMediaSubsession::subsessionByeHandler(void* clientData) {
+  ((ProxyServerMediaSubsession*)clientData)->subsessionByeHandler();
+}
+
+void ProxyServerMediaSubsession::subsessionByeHandler() {
+  if (verbosityLevel() > 0) {
+    envir() << *this << ": received RTCP \"BYE\".  (The back-end stream has ended.)\n";
+  }
+
+  // This "BYE" signals that our input source has (effectively) closed, so pass this onto the front-end clients:
+  fHaveSetupStream = False; // hack to stop "PAUSE" getting sent by:
+  if (fClientMediaSubsession.readSource() != NULL) {
+    fClientMediaSubsession.readSource()->handleClosure();
+  }
+
+  // And then treat this as if we had lost connection to the back-end server,
+  // and can reestablish streaming from it only by sending another "DESCRIBE":
+  ProxyServerMediaSession* const sms = (ProxyServerMediaSession*)fParentSession;
+  ProxyRTSPClient* const proxyRTSPClient = sms->fProxyRTSPClient;
+  proxyRTSPClient->scheduleReset();
+}
+
+
+////////// PresentationTimeSessionNormalizer and PresentationTimeSubsessionNormalizer implementations //////////
+
+// PresentationTimeSessionNormalizer:
+
+PresentationTimeSessionNormalizer::PresentationTimeSessionNormalizer(UsageEnvironment& env)
+  : Medium(env),
+    fSubsessionNormalizers(NULL), fMasterSSNormalizer(NULL) {
+}
+
+PresentationTimeSessionNormalizer::~PresentationTimeSessionNormalizer() {
+  while (fSubsessionNormalizers != NULL) {
+    Medium::close(fSubsessionNormalizers);
+  }
+}
+
+PresentationTimeSubsessionNormalizer* PresentationTimeSessionNormalizer
+::createNewPresentationTimeSubsessionNormalizer(FramedSource* inputSource, RTPSource* rtpSource,
+						char const* codecName) {
+  fSubsessionNormalizers
+    = new PresentationTimeSubsessionNormalizer(*this, inputSource, rtpSource, codecName, fSubsessionNormalizers);
+  return fSubsessionNormalizers;
+}
+
+void PresentationTimeSessionNormalizer
+::normalizePresentationTime(PresentationTimeSubsessionNormalizer* ssNormalizer,
+			    struct timeval& toPT, struct timeval const& fromPT) {
+  Boolean const hasBeenSynced = ssNormalizer->fRTPSource->hasBeenSynchronizedUsingRTCP();
+
+  if (!hasBeenSynced) {
+    // If "fromPT" has not yet been RTCP-synchronized, then it was generated by our own receiving code, and thus
+    // is already aligned with 'wall-clock' time.  Just copy it 'as is' to "toPT":
+    toPT = fromPT;
+  } else {
+    if (fMasterSSNormalizer == NULL) {
+      // Make "ssNormalizer" the 'master' subsession - meaning that its presentation time is adjusted to align with 'wall clock'
+      // time, and the presentation times of other subsessions (if any) are adjusted to retain their relative separation with
+      // those of the master:
+      fMasterSSNormalizer = ssNormalizer;
+
+      struct timeval timeNow;
+      gettimeofday(&timeNow, NULL);
+
+      // Compute: fPTAdjustment = timeNow - fromPT
+      fPTAdjustment.tv_sec = timeNow.tv_sec - fromPT.tv_sec;
+      fPTAdjustment.tv_usec = timeNow.tv_usec - fromPT.tv_usec;
+      // Note: It's OK if one or both of these fields underflows; the result still works out OK later.
+    }
+
+    // Compute a normalized presentation time: toPT = fromPT + fPTAdjustment
+    toPT.tv_sec = fromPT.tv_sec + fPTAdjustment.tv_sec - 1;
+    toPT.tv_usec = fromPT.tv_usec + fPTAdjustment.tv_usec + MILLION;
+    while (toPT.tv_usec > MILLION) { ++toPT.tv_sec; toPT.tv_usec -= MILLION; }
+
+    // Because "ssNormalizer"s relayed presentation times are accurate from now on, enable RTCP "SR" reports for its "RTPSink":
+    RTPSink* const rtpSink = ssNormalizer->fRTPSink;
+    if (rtpSink != NULL) { // sanity check; should always be true
+      rtpSink->enableRTCPReports() = True;
+    }
+  }
+}
+
+void PresentationTimeSessionNormalizer
+::removePresentationTimeSubsessionNormalizer(PresentationTimeSubsessionNormalizer* ssNormalizer) {
+  // Unlink "ssNormalizer" from the linked list (starting with "fSubsessionNormalizers"):
+  if (fSubsessionNormalizers == ssNormalizer) {
+    fSubsessionNormalizers = fSubsessionNormalizers->fNext;
+  } else {
+    PresentationTimeSubsessionNormalizer** ssPtrPtr = &(fSubsessionNormalizers->fNext);
+    while (*ssPtrPtr != ssNormalizer) ssPtrPtr = &((*ssPtrPtr)->fNext);
+    *ssPtrPtr = (*ssPtrPtr)->fNext;
+  }
+}
+
+// PresentationTimeSubsessionNormalizer:
+
+PresentationTimeSubsessionNormalizer
+::PresentationTimeSubsessionNormalizer(PresentationTimeSessionNormalizer& parent, FramedSource* inputSource, RTPSource* rtpSource,
+				       char const* codecName, PresentationTimeSubsessionNormalizer* next)
+  : FramedFilter(parent.envir(), inputSource),
+    fParent(parent), fRTPSource(rtpSource), fRTPSink(NULL), fCodecName(codecName), fNext(next) {
+}
+
+PresentationTimeSubsessionNormalizer::~PresentationTimeSubsessionNormalizer() {
+  fParent.removePresentationTimeSubsessionNormalizer(this);
+}
+
+void PresentationTimeSubsessionNormalizer::afterGettingFrame(void* clientData, unsigned frameSize,
+							     unsigned numTruncatedBytes,
+							     struct timeval presentationTime,
+							     unsigned durationInMicroseconds) {
+  ((PresentationTimeSubsessionNormalizer*)clientData)
+    ->afterGettingFrame(frameSize, numTruncatedBytes, presentationTime, durationInMicroseconds);
+}
+
+void PresentationTimeSubsessionNormalizer::afterGettingFrame(unsigned frameSize,
+							     unsigned numTruncatedBytes,
+							     struct timeval presentationTime,
+							     unsigned durationInMicroseconds) {
+  // This filter is implemented by passing all frames through unchanged, except that "fPresentationTime" is changed:
+  fFrameSize = frameSize;
+  fNumTruncatedBytes = numTruncatedBytes;
+  fDurationInMicroseconds = durationInMicroseconds;
+
+  fParent.normalizePresentationTime(this, fPresentationTime, presentationTime);
+
+  // Hack for JPEG/RTP proxying.  Because we're proxying JPEG by just copying the raw JPEG/RTP payloads, without interpreting them,
+  // we need to also 'copy' the RTP 'M' (marker) bit from the "RTPSource" to the "RTPSink":
+  if (fRTPSource->curPacketMarkerBit() && strcmp(fCodecName, "JPEG") == 0) ((SimpleRTPSink*)fRTPSink)->setMBitOnNextPacket();
+
+  // Complete delivery:
+  FramedSource::afterGetting(this);
+}
+
+void PresentationTimeSubsessionNormalizer::doGetNextFrame() {
+  fInputSource->getNextFrame(fTo, fMaxSize, afterGettingFrame, this, FramedSource::handleClosure, this);
+}
diff --git a/liveMedia/QCELPAudioRTPSource.cpp b/liveMedia/QCELPAudioRTPSource.cpp
new file mode 100644
index 0000000..44938d8
--- /dev/null
+++ b/liveMedia/QCELPAudioRTPSource.cpp
@@ -0,0 +1,504 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Qualcomm "PureVoice" (aka. "QCELP") Audio RTP Sources
+// Implementation
+
+#include "QCELPAudioRTPSource.hh"
+#include "MultiFramedRTPSource.hh"
+#include "FramedFilter.hh"
+#include <string.h>
+#include <stdlib.h>
+
+// This source is implemented internally by two separate sources:
+// (i) a RTP source for the raw (interleaved) QCELP frames, and
+// (ii) a deinterleaving filter that reads from this.
+// Define these two new classes here:
+
+class RawQCELPRTPSource: public MultiFramedRTPSource {
+public:
+  static RawQCELPRTPSource* createNew(UsageEnvironment& env,
+				      Groupsock* RTPgs,
+				      unsigned char rtpPayloadFormat,
+				      unsigned rtpTimestampFrequency);
+
+  unsigned char interleaveL() const { return fInterleaveL; }
+  unsigned char interleaveN() const { return fInterleaveN; }
+  unsigned char& frameIndex() { return fFrameIndex; } // index within pkt
+
+private:
+  RawQCELPRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		    unsigned char rtpPayloadFormat,
+		    unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+  virtual ~RawQCELPRTPSource();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+  virtual Boolean hasBeenSynchronizedUsingRTCP();
+
+private:
+  unsigned char fInterleaveL, fInterleaveN, fFrameIndex;
+  unsigned fNumSuccessiveSyncedPackets;
+};
+
+class QCELPDeinterleaver: public FramedFilter {
+public:
+  static QCELPDeinterleaver* createNew(UsageEnvironment& env,
+				       RawQCELPRTPSource* inputSource);
+
+private:
+  QCELPDeinterleaver(UsageEnvironment& env,
+		     RawQCELPRTPSource* inputSource);
+      // called only by "createNew()"
+
+  virtual ~QCELPDeinterleaver();
+
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize, struct timeval presentationTime);
+
+private:
+  // Redefined virtual functions:
+  void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+private:
+  class QCELPDeinterleavingBuffer* fDeinterleavingBuffer;
+  Boolean fNeedAFrame;
+};
+
+
+////////// QCELPAudioRTPSource implementation //////////
+
+FramedSource*
+QCELPAudioRTPSource::createNew(UsageEnvironment& env,
+			       Groupsock* RTPgs,
+			       RTPSource*& resultRTPSource,
+			       unsigned char rtpPayloadFormat,
+			       unsigned rtpTimestampFrequency) {
+  RawQCELPRTPSource* rawRTPSource;
+  resultRTPSource = rawRTPSource
+    = RawQCELPRTPSource::createNew(env, RTPgs, rtpPayloadFormat,
+				   rtpTimestampFrequency);
+  if (resultRTPSource == NULL) return NULL;
+
+  QCELPDeinterleaver* deinterleaver
+    = QCELPDeinterleaver::createNew(env, rawRTPSource);
+  if (deinterleaver == NULL) {
+    Medium::close(resultRTPSource);
+    resultRTPSource = NULL;
+  }
+
+  return deinterleaver;
+}
+
+
+////////// QCELPBufferedPacket and QCELPBufferedPacketFactory //////////
+
+// A subclass of BufferedPacket, used to separate out QCELP frames.
+
+class QCELPBufferedPacket: public BufferedPacket {
+public:
+  QCELPBufferedPacket(RawQCELPRTPSource& ourSource);
+  virtual ~QCELPBufferedPacket();
+
+private: // redefined virtual functions
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+					 unsigned dataSize);
+private:
+  RawQCELPRTPSource& fOurSource;
+};
+
+class QCELPBufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+
+///////// RawQCELPRTPSource implementation ////////
+
+RawQCELPRTPSource*
+RawQCELPRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			     unsigned char rtpPayloadFormat,
+			     unsigned rtpTimestampFrequency) {
+  return new RawQCELPRTPSource(env, RTPgs, rtpPayloadFormat,
+			       rtpTimestampFrequency);
+}
+
+RawQCELPRTPSource::RawQCELPRTPSource(UsageEnvironment& env,
+				     Groupsock* RTPgs,
+				     unsigned char rtpPayloadFormat,
+				     unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs, rtpPayloadFormat,
+			 rtpTimestampFrequency,
+                         new QCELPBufferedPacketFactory),
+  fInterleaveL(0), fInterleaveN(0), fFrameIndex(0),
+  fNumSuccessiveSyncedPackets(0) {
+}
+
+RawQCELPRTPSource::~RawQCELPRTPSource() {
+}
+
+Boolean RawQCELPRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  // First, check whether this packet's RTP timestamp is synchronized:
+  if (RTPSource::hasBeenSynchronizedUsingRTCP()) {
+    ++fNumSuccessiveSyncedPackets;
+  } else {
+    fNumSuccessiveSyncedPackets = 0;
+  }
+
+  // There's a 1-byte header indicating the interleave parameters
+  if (packetSize < 1) return False;
+
+  // Get the interleaving parameters from the 1-byte header,
+  // and check them for validity:
+  unsigned char const firstByte = headerStart[0];
+  unsigned char const interleaveL = (firstByte&0x38)>>3;
+  unsigned char const interleaveN = firstByte&0x07;
+#ifdef DEBUG
+  fprintf(stderr, "packetSize: %d, interleaveL: %d, interleaveN: %d\n", packetSize, interleaveL, interleaveN);
+#endif
+  if (interleaveL > 5 || interleaveN > interleaveL) return False; //invalid
+
+  fInterleaveL = interleaveL;
+  fInterleaveN = interleaveN;
+  fFrameIndex = 0; // initially
+
+  resultSpecialHeaderSize = 1;
+  return True;
+}
+
+char const* RawQCELPRTPSource::MIMEtype() const {
+  return "audio/QCELP";
+}
+
+Boolean RawQCELPRTPSource::hasBeenSynchronizedUsingRTCP() {
+  // Don't report ourselves as being synchronized until we've received
+  // at least a complete interleave cycle of synchronized packets.
+  // This ensures that the receiver is currently getting a frame from
+  // a packet that was synchronized.
+  if (fNumSuccessiveSyncedPackets > (unsigned)(fInterleaveL+1)) {
+    fNumSuccessiveSyncedPackets = fInterleaveL+2; // prevents overflow
+    return True;
+  }
+  return False;
+}
+
+
+///// QCELPBufferedPacket and QCELPBufferedPacketFactory implementation
+
+QCELPBufferedPacket::QCELPBufferedPacket(RawQCELPRTPSource& ourSource)
+  : fOurSource(ourSource) {
+}
+
+QCELPBufferedPacket::~QCELPBufferedPacket() {
+}
+
+unsigned QCELPBufferedPacket::
+  nextEnclosedFrameSize(unsigned char*& framePtr, unsigned dataSize) {
+  // The size of the QCELP frame is determined by the first byte:
+  if (dataSize == 0) return 0; // sanity check
+  unsigned char const firstByte = framePtr[0];
+
+  unsigned frameSize;
+  switch (firstByte) {
+  case 0: { frameSize = 1; break; }
+  case 1: { frameSize = 4; break; }
+  case 2: { frameSize = 8; break; }
+  case 3: { frameSize = 17; break; }
+  case 4: { frameSize = 35; break; }
+  default: { frameSize = 0; break; }
+  }
+
+#ifdef DEBUG
+  fprintf(stderr, "QCELPBufferedPacket::nextEnclosedFrameSize(): frameSize: %d, dataSize: %d\n", frameSize, dataSize);
+#endif
+  if (dataSize < frameSize) return 0;
+
+  ++fOurSource.frameIndex();
+  return frameSize;
+}
+
+BufferedPacket* QCELPBufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* ourSource) {
+  return new QCELPBufferedPacket((RawQCELPRTPSource&)(*ourSource));
+}
+
+///////// QCELPDeinterleavingBuffer /////////
+// (used to implement QCELPDeinterleaver)
+
+#define QCELP_MAX_FRAME_SIZE 35
+#define QCELP_MAX_INTERLEAVE_L 5
+#define QCELP_MAX_FRAMES_PER_PACKET 10
+#define QCELP_MAX_INTERLEAVE_GROUP_SIZE \
+    ((QCELP_MAX_INTERLEAVE_L+1)*QCELP_MAX_FRAMES_PER_PACKET)
+
+class QCELPDeinterleavingBuffer {
+public:
+  QCELPDeinterleavingBuffer();
+  virtual ~QCELPDeinterleavingBuffer();
+
+  void deliverIncomingFrame(unsigned frameSize,
+			    unsigned char interleaveL,
+			    unsigned char interleaveN,
+			    unsigned char frameIndex,
+			    unsigned short packetSeqNum,
+			    struct timeval presentationTime);
+  Boolean retrieveFrame(unsigned char* to, unsigned maxSize,
+			unsigned& resultFrameSize, unsigned& resultNumTruncatedBytes,
+			struct timeval& resultPresentationTime);
+
+  unsigned char* inputBuffer() { return fInputBuffer; }
+  unsigned inputBufferSize() const { return QCELP_MAX_FRAME_SIZE; }
+
+private:
+  class FrameDescriptor {
+  public:
+    FrameDescriptor();
+    virtual ~FrameDescriptor();
+
+    unsigned frameSize;
+    unsigned char* frameData;
+    struct timeval presentationTime;
+  };
+
+  // Use two banks of descriptors - one for incoming, one for outgoing
+  FrameDescriptor fFrames[QCELP_MAX_INTERLEAVE_GROUP_SIZE][2];
+  unsigned char fIncomingBankId; // toggles between 0 and 1
+  unsigned char fIncomingBinMax; // in the incoming bank
+  unsigned char fOutgoingBinMax; // in the outgoing bank
+  unsigned char fNextOutgoingBin;
+  Boolean fHaveSeenPackets;
+  u_int16_t fLastPacketSeqNumForGroup;
+  unsigned char* fInputBuffer;
+  struct timeval fLastRetrievedPresentationTime;
+};
+
+
+////////// QCELPDeinterleaver implementation /////////
+
+QCELPDeinterleaver*
+QCELPDeinterleaver::createNew(UsageEnvironment& env,
+			      RawQCELPRTPSource* inputSource) {
+  return new QCELPDeinterleaver(env, inputSource);
+}
+
+QCELPDeinterleaver::QCELPDeinterleaver(UsageEnvironment& env,
+				       RawQCELPRTPSource* inputSource)
+  : FramedFilter(env, inputSource),
+    fNeedAFrame(False) {
+  fDeinterleavingBuffer = new QCELPDeinterleavingBuffer();
+}
+
+QCELPDeinterleaver::~QCELPDeinterleaver() {
+  delete fDeinterleavingBuffer;
+}
+
+static unsigned const uSecsPerFrame = 20000; // 20 ms
+
+void QCELPDeinterleaver::doGetNextFrame() {
+  // First, try getting a frame from the deinterleaving buffer:
+  if (fDeinterleavingBuffer->retrieveFrame(fTo, fMaxSize,
+					   fFrameSize, fNumTruncatedBytes,
+					   fPresentationTime)) {
+    // Success!
+    fNeedAFrame = False;
+
+    fDurationInMicroseconds = uSecsPerFrame;
+
+    // Call our own 'after getting' function.  Because we're not a 'leaf'
+    // source, we can call this directly, without risking
+    // infinite recursion
+    afterGetting(this);
+    return;
+  }
+
+  // No luck, so ask our source for help:
+  fNeedAFrame = True;
+  if (!fInputSource->isCurrentlyAwaitingData()) {
+    fInputSource->getNextFrame(fDeinterleavingBuffer->inputBuffer(),
+			       fDeinterleavingBuffer->inputBufferSize(),
+			       afterGettingFrame, this,
+			       FramedSource::handleClosure, this);
+  }
+}
+
+void QCELPDeinterleaver::doStopGettingFrames() {
+  fNeedAFrame = False;
+  fInputSource->stopGettingFrames();
+}
+
+void QCELPDeinterleaver
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned /*numTruncatedBytes*/,
+		    struct timeval presentationTime,
+		    unsigned /*durationInMicroseconds*/) {
+  QCELPDeinterleaver* deinterleaver = (QCELPDeinterleaver*)clientData;
+  deinterleaver->afterGettingFrame1(frameSize, presentationTime);
+}
+
+void QCELPDeinterleaver
+::afterGettingFrame1(unsigned frameSize, struct timeval presentationTime) {
+  RawQCELPRTPSource* source = (RawQCELPRTPSource*)fInputSource;
+
+  // First, put the frame into our deinterleaving buffer:
+  fDeinterleavingBuffer
+    ->deliverIncomingFrame(frameSize, source->interleaveL(),
+			   source->interleaveN(), source->frameIndex(),
+			   source->curPacketRTPSeqNum(),
+			   presentationTime);
+
+  // Then, try delivering a frame to the client (if he wants one):
+  if (fNeedAFrame) doGetNextFrame();
+}
+
+
+////////// QCELPDeinterleavingBuffer implementation /////////
+
+QCELPDeinterleavingBuffer::QCELPDeinterleavingBuffer()
+  : fIncomingBankId(0), fIncomingBinMax(0),
+    fOutgoingBinMax(0), fNextOutgoingBin(0),
+    fHaveSeenPackets(False) {
+  fInputBuffer = new unsigned char[QCELP_MAX_FRAME_SIZE];
+}
+
+QCELPDeinterleavingBuffer::~QCELPDeinterleavingBuffer() {
+  delete[] fInputBuffer;
+}
+
+void QCELPDeinterleavingBuffer
+::deliverIncomingFrame(unsigned frameSize,
+		       unsigned char interleaveL,
+		       unsigned char interleaveN,
+		       unsigned char frameIndex,
+		       unsigned short packetSeqNum,
+		       struct timeval presentationTime) {
+  // First perform a sanity check on the parameters:
+  // (This is overkill, as the source should have already done this.)
+  if (frameSize > QCELP_MAX_FRAME_SIZE
+      || interleaveL > QCELP_MAX_INTERLEAVE_L || interleaveN > interleaveL
+      || frameIndex == 0 || frameIndex > QCELP_MAX_FRAMES_PER_PACKET) {
+#ifdef DEBUG
+    fprintf(stderr, "QCELPDeinterleavingBuffer::deliverIncomingFrame() param sanity check failed (%d,%d,%d,%d)\n", frameSize, interleaveL, interleaveN, frameIndex);
+#endif
+    return;
+  }
+
+  // The input "presentationTime" was that of the first frame in this
+  // packet.  Update it for the current frame:
+  unsigned uSecIncrement = (frameIndex-1)*(interleaveL+1)*uSecsPerFrame;
+  presentationTime.tv_usec += uSecIncrement;
+  presentationTime.tv_sec += presentationTime.tv_usec/1000000;
+  presentationTime.tv_usec = presentationTime.tv_usec%1000000;
+
+  // Next, check whether this packet is part of a new interleave group
+  if (!fHaveSeenPackets
+      || seqNumLT(fLastPacketSeqNumForGroup, packetSeqNum)) {
+    // We've moved to a new interleave group
+    fHaveSeenPackets = True;
+    fLastPacketSeqNumForGroup = packetSeqNum + interleaveL - interleaveN;
+
+    // Switch the incoming and outgoing banks:
+    fIncomingBankId ^= 1;
+    unsigned char tmp = fIncomingBinMax;
+    fIncomingBinMax = fOutgoingBinMax;
+    fOutgoingBinMax = tmp;
+    fNextOutgoingBin = 0;
+  }
+
+  // Now move the incoming frame into the appropriate bin:
+  unsigned const binNumber
+    = interleaveN + (frameIndex-1)*(interleaveL+1);
+  FrameDescriptor& inBin = fFrames[binNumber][fIncomingBankId];
+  unsigned char* curBuffer = inBin.frameData;
+  inBin.frameData = fInputBuffer;
+  inBin.frameSize = frameSize;
+  inBin.presentationTime = presentationTime;
+
+  if (curBuffer == NULL) curBuffer = new unsigned char[QCELP_MAX_FRAME_SIZE];
+  fInputBuffer = curBuffer;
+
+  if (binNumber >= fIncomingBinMax) {
+    fIncomingBinMax = binNumber + 1;
+  }
+}
+
+Boolean QCELPDeinterleavingBuffer
+::retrieveFrame(unsigned char* to, unsigned maxSize,
+		unsigned& resultFrameSize, unsigned& resultNumTruncatedBytes,
+		struct timeval& resultPresentationTime) {
+  if (fNextOutgoingBin >= fOutgoingBinMax) return False; // none left
+
+  FrameDescriptor& outBin = fFrames[fNextOutgoingBin][fIncomingBankId^1];
+  unsigned char* fromPtr;
+  unsigned char fromSize = outBin.frameSize;
+  outBin.frameSize = 0; // for the next time this bin is used
+
+  // Check whether this frame is missing; if so, return an 'erasure' frame:
+  unsigned char erasure = 14;
+  if (fromSize == 0) {
+    fromPtr = &erasure;
+    fromSize = 1;
+
+    // Compute this erasure frame's presentation time via extrapolation:
+    resultPresentationTime = fLastRetrievedPresentationTime;
+    resultPresentationTime.tv_usec += uSecsPerFrame;
+    if (resultPresentationTime.tv_usec >= 1000000) {
+      ++resultPresentationTime.tv_sec;
+      resultPresentationTime.tv_usec -= 1000000;
+    }
+  } else {
+    // Normal case - a frame exists:
+    fromPtr = outBin.frameData;
+    resultPresentationTime = outBin.presentationTime;
+  }
+
+  fLastRetrievedPresentationTime = resultPresentationTime;
+
+  if (fromSize > maxSize) {
+    resultNumTruncatedBytes = fromSize - maxSize;
+    resultFrameSize = maxSize;
+  } else {
+    resultNumTruncatedBytes = 0;
+    resultFrameSize = fromSize;
+  }
+  memmove(to, fromPtr, resultFrameSize);
+
+  ++fNextOutgoingBin;
+  return True;
+}
+
+QCELPDeinterleavingBuffer::FrameDescriptor::FrameDescriptor()
+  : frameSize(0), frameData(NULL) {
+}
+
+QCELPDeinterleavingBuffer::FrameDescriptor::~FrameDescriptor() {
+  delete[] frameData;
+}
diff --git a/liveMedia/QuickTimeFileSink.cpp b/liveMedia/QuickTimeFileSink.cpp
new file mode 100644
index 0000000..62c6583
--- /dev/null
+++ b/liveMedia/QuickTimeFileSink.cpp
@@ -0,0 +1,2339 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A sink that generates a QuickTime file from a composite media session
+// Implementation
+
+#include "QuickTimeFileSink.hh"
+#include "QuickTimeGenericRTPSource.hh"
+#include "GroupsockHelper.hh"
+#include "InputFile.hh"
+#include "OutputFile.hh"
+#include "H263plusVideoRTPSource.hh" // for the special header
+#include "MPEG4GenericRTPSource.hh" //for "samplingFrequencyFromAudioSpecificConfig()"
+#include "MPEG4LATMAudioRTPSource.hh" // for "parseGeneralConfigStr()"
+#include "Base64.hh"
+
+#include <ctype.h>
+
+#define fourChar(x,y,z,w) ( ((x)<<24)|((y)<<16)|((z)<<8)|(w) )
+
+#define H264_IDR_FRAME 0x65  //bit 8 == 0, bits 7-6 (ref) == 3, bits 5-0 (type) == 5
+
+////////// SubsessionIOState, ChunkDescriptor ///////////
+// A structure used to represent the I/O state of each input 'subsession':
+
+class ChunkDescriptor {
+public:
+  ChunkDescriptor(int64_t offsetInFile, unsigned size,
+		  unsigned frameSize, unsigned frameDuration,
+		  struct timeval presentationTime);
+
+  ChunkDescriptor* extendChunk(int64_t newOffsetInFile, unsigned newSize,
+			       unsigned newFrameSize,
+			       unsigned newFrameDuration,
+			       struct timeval newPresentationTime);
+      // this may end up allocating a new chunk instead
+public:
+  ChunkDescriptor* fNextChunk;
+  int64_t fOffsetInFile;
+  unsigned fNumFrames;
+  unsigned fFrameSize;
+  unsigned fFrameDuration;
+  struct timeval fPresentationTime; // of the start of the data
+};
+
+class SubsessionBuffer {
+public:
+  SubsessionBuffer(unsigned bufferSize)
+    : fBufferSize(bufferSize) {
+    reset();
+    fData = new unsigned char[bufferSize];
+  }
+  virtual ~SubsessionBuffer() { delete[] fData; }
+  void reset() { fBytesInUse = 0; }
+  void addBytes(unsigned numBytes) { fBytesInUse += numBytes; }
+
+  unsigned char* dataStart() { return &fData[0]; }
+  unsigned char* dataEnd() { return &fData[fBytesInUse]; }
+  unsigned bytesInUse() const { return fBytesInUse; }
+  unsigned bytesAvailable() const { return fBufferSize - fBytesInUse; }
+
+  void setPresentationTime(struct timeval const& presentationTime) {
+    fPresentationTime = presentationTime;
+  }
+  struct timeval const& presentationTime() const {return fPresentationTime;}
+
+private:
+  unsigned fBufferSize;
+  struct timeval fPresentationTime;
+  unsigned char* fData;
+  unsigned fBytesInUse;
+};
+
+class SyncFrame {
+public:
+  SyncFrame(unsigned frameNum);
+
+public:
+  class SyncFrame *nextSyncFrame;
+  unsigned sfFrameNum;  
+};
+
+// A 64-bit counter, used below:
+class Count64 {
+public:
+  Count64()
+    : hi(0), lo(0) {
+  }
+
+  void operator+=(unsigned arg);
+
+  u_int32_t hi, lo;
+};
+
+class SubsessionIOState {
+public:
+  SubsessionIOState(QuickTimeFileSink& sink, MediaSubsession& subsession);
+  virtual ~SubsessionIOState();
+
+  Boolean setQTstate();
+  void setFinalQTstate();
+
+  void afterGettingFrame(unsigned packetDataSize,
+			 struct timeval presentationTime);
+  void onSourceClosure();
+
+  Boolean syncOK(struct timeval presentationTime);
+      // returns true iff data is usable despite a sync check
+
+  static void setHintTrack(SubsessionIOState* hintedTrack,
+			   SubsessionIOState* hintTrack);
+  Boolean isHintTrack() const { return fTrackHintedByUs != NULL; }
+  Boolean hasHintTrack() const { return fHintTrackForUs != NULL; }
+
+  UsageEnvironment& envir() const { return fOurSink.envir(); }
+
+public:
+  static unsigned fCurrentTrackNumber;
+  unsigned fTrackID;
+  SubsessionIOState* fHintTrackForUs; SubsessionIOState* fTrackHintedByUs;
+
+  SubsessionBuffer *fBuffer, *fPrevBuffer;
+  QuickTimeFileSink& fOurSink;
+  MediaSubsession& fOurSubsession;
+
+  unsigned short fLastPacketRTPSeqNum;
+  Boolean fOurSourceIsActive;
+
+  Boolean fHaveBeenSynced; // used in synchronizing with other streams
+  struct timeval fSyncTime;
+
+  Boolean fQTEnableTrack;
+  unsigned fQTcomponentSubtype;
+  char const* fQTcomponentName;
+  typedef unsigned (QuickTimeFileSink::*atomCreationFunc)();
+  atomCreationFunc fQTMediaInformationAtomCreator;
+  atomCreationFunc fQTMediaDataAtomCreator;
+  char const* fQTAudioDataType;
+  unsigned short fQTSoundSampleVersion;
+  unsigned fQTTimeScale;
+  unsigned fQTTimeUnitsPerSample;
+  unsigned fQTBytesPerFrame;
+  unsigned fQTSamplesPerFrame;
+  // These next fields are derived from the ones above,
+  // plus the information from each chunk:
+  unsigned fQTTotNumSamples;
+  unsigned fQTDurationM; // in media time units
+  unsigned fQTDurationT; // in track time units
+  int64_t fTKHD_durationPosn;
+      // position of the duration in the output 'tkhd' atom
+  unsigned fQTInitialOffsetDuration;
+      // if there's a pause at the beginning
+
+  ChunkDescriptor *fHeadChunk, *fTailChunk;
+  unsigned fNumChunks;
+  SyncFrame *fHeadSyncFrame, *fTailSyncFrame;
+
+  // Counters to be used in the hint track's 'udta'/'hinf' atom;
+  struct hinf {
+    Count64 trpy;
+    Count64 nump;
+    Count64 tpyl;
+    // Is 'maxr' needed? Computing this would be a PITA. #####
+    Count64 dmed;
+    Count64 dimm;
+    // 'drep' is always 0
+    // 'tmin' and 'tmax' are always 0
+    unsigned pmax;
+    unsigned dmax;
+  } fHINF;
+
+private:
+  void useFrame(SubsessionBuffer& buffer);
+  void useFrameForHinting(unsigned frameSize,
+			  struct timeval presentationTime,
+			  unsigned startSampleNumber);
+
+  // used by the above two routines:
+  unsigned useFrame1(unsigned sourceDataSize,
+		     struct timeval presentationTime,
+		     unsigned frameDuration, int64_t destFileOffset);
+      // returns the number of samples in this data
+
+private:
+  // A structure used for temporarily storing frame state:
+  struct {
+    unsigned frameSize;
+    struct timeval presentationTime;
+    int64_t destFileOffset; // used for non-hint tracks only
+
+    // The remaining fields are used for hint tracks only:
+    unsigned startSampleNumber;
+    unsigned short seqNum;
+    unsigned rtpHeader;
+    unsigned char numSpecialHeaders; // used when our RTP source has special headers
+    unsigned specialHeaderBytesLength; // ditto
+    unsigned char specialHeaderBytes[SPECIAL_HEADER_BUFFER_SIZE]; // ditto
+    unsigned packetSizes[256];
+  } fPrevFrameState;
+};
+
+
+////////// QuickTimeFileSink implementation //////////
+
+QuickTimeFileSink::QuickTimeFileSink(UsageEnvironment& env,
+				     MediaSession& inputSession,
+				     char const* outputFileName,
+				     unsigned bufferSize,
+				     unsigned short movieWidth,
+				     unsigned short movieHeight,
+				     unsigned movieFPS,
+				     Boolean packetLossCompensate,
+				     Boolean syncStreams,
+				     Boolean generateHintTracks,
+				     Boolean generateMP4Format)
+  : Medium(env), fInputSession(inputSession),
+    fBufferSize(bufferSize), fPacketLossCompensate(packetLossCompensate),
+    fSyncStreams(syncStreams), fGenerateMP4Format(generateMP4Format),
+    fAreCurrentlyBeingPlayed(False),
+    fLargestRTPtimestampFrequency(0),
+    fNumSubsessions(0), fNumSyncedSubsessions(0),
+    fHaveCompletedOutputFile(False),
+    fMovieWidth(movieWidth), fMovieHeight(movieHeight),
+    fMovieFPS(movieFPS), fMaxTrackDurationM(0) {
+  fOutFid = OpenOutputFile(env, outputFileName);
+  if (fOutFid == NULL) return;
+
+  fNewestSyncTime.tv_sec = fNewestSyncTime.tv_usec = 0;
+  fFirstDataTime.tv_sec = fFirstDataTime.tv_usec = (unsigned)(~0);
+
+  // Set up I/O state for each input subsession:
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    // Ignore subsessions without a data source:
+    FramedSource* subsessionSource = subsession->readSource();
+    if (subsessionSource == NULL) continue;
+
+    // If "subsession's" SDP description specified screen dimension
+    // or frame rate parameters, then use these.  (Note that this must
+    // be done before the call to "setQTState()" below.)
+    if (subsession->videoWidth() != 0) {
+      fMovieWidth = subsession->videoWidth();
+    }
+    if (subsession->videoHeight() != 0) {
+      fMovieHeight = subsession->videoHeight();
+    }
+    if (subsession->videoFPS() != 0) {
+      fMovieFPS = subsession->videoFPS();
+    }
+
+    SubsessionIOState* ioState
+      = new SubsessionIOState(*this, *subsession);
+    if (ioState == NULL || !ioState->setQTstate()) {
+      // We're not able to output a QuickTime track for this subsession
+      delete ioState; ioState = NULL;
+      continue;
+    }
+    subsession->miscPtr = (void*)ioState;
+
+    if (generateHintTracks) {
+      // Also create a hint track for this track:
+      SubsessionIOState* hintTrack
+	= new SubsessionIOState(*this, *subsession);
+      SubsessionIOState::setHintTrack(ioState, hintTrack);
+      if (!hintTrack->setQTstate()) {
+	delete hintTrack;
+	SubsessionIOState::setHintTrack(ioState, NULL);
+      }
+    }
+
+    // Also set a 'BYE' handler for this subsession's RTCP instance:
+    if (subsession->rtcpInstance() != NULL) {
+      subsession->rtcpInstance()->setByeHandler(onRTCPBye, ioState);
+    }
+
+    unsigned rtpTimestampFrequency = subsession->rtpTimestampFrequency();
+    if (rtpTimestampFrequency > fLargestRTPtimestampFrequency) {
+      fLargestRTPtimestampFrequency = rtpTimestampFrequency;
+    }
+
+    ++fNumSubsessions;
+  }
+
+  // Use the current time as the file's creation and modification
+  // time.  Use Apple's time format: seconds (UTC) since January 1, 1904
+
+  gettimeofday(&fStartTime, NULL);
+  fAppleCreationTime = fStartTime.tv_sec - 0x83da4f80;
+
+  // Begin by writing a "mdat" atom at the start of the file.
+  // (Later, when we've finished copying data to the file, we'll come
+  // back and fill in its size.)
+  fMDATposition = TellFile64(fOutFid);
+  addAtomHeader64("mdat");
+  // add 64Bit offset
+  fMDATposition += 8;
+}
+
+QuickTimeFileSink::~QuickTimeFileSink() {
+  completeOutputFile();
+
+  // Then, stop streaming and delete each active "SubsessionIOState":
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    if (subsession->readSource() != NULL) subsession->readSource()->stopGettingFrames();
+
+    SubsessionIOState* ioState
+      = (SubsessionIOState*)(subsession->miscPtr);
+    if (ioState == NULL) continue;
+
+    delete ioState->fHintTrackForUs; // if any
+    delete ioState;
+  }
+
+  // Finally, close our output file:
+  CloseOutputFile(fOutFid);
+}
+
+QuickTimeFileSink*
+QuickTimeFileSink::createNew(UsageEnvironment& env,
+			     MediaSession& inputSession,
+			     char const* outputFileName,
+			     unsigned bufferSize,
+			     unsigned short movieWidth,
+			     unsigned short movieHeight,
+			     unsigned movieFPS,
+			     Boolean packetLossCompensate,
+			     Boolean syncStreams,
+			     Boolean generateHintTracks,
+			     Boolean generateMP4Format) {
+  QuickTimeFileSink* newSink = 
+    new QuickTimeFileSink(env, inputSession, outputFileName, bufferSize, movieWidth, movieHeight, movieFPS,
+			  packetLossCompensate, syncStreams, generateHintTracks, generateMP4Format);
+  if (newSink == NULL || newSink->fOutFid == NULL) {
+    Medium::close(newSink);
+    return NULL;
+  }
+
+  return newSink;
+}
+
+void QuickTimeFileSink
+::noteRecordedFrame(MediaSubsession& /*inputSubsession*/,
+		    unsigned /*packetDataSize*/, struct timeval const& /*presentationTime*/) {
+  // Default implementation: Do nothing
+}
+
+Boolean QuickTimeFileSink::startPlaying(afterPlayingFunc* afterFunc,
+					void* afterClientData) {
+  // Make sure we're not already being played:
+  if (fAreCurrentlyBeingPlayed) {
+    envir().setResultMsg("This sink has already been played");
+    return False;
+  }
+
+  fAreCurrentlyBeingPlayed = True;
+  fAfterFunc = afterFunc;
+  fAfterClientData = afterClientData;
+
+  return continuePlaying();
+}
+
+Boolean QuickTimeFileSink::continuePlaying() {
+  // Run through each of our input session's 'subsessions',
+  // asking for a frame from each one:
+  Boolean haveActiveSubsessions = False;
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    FramedSource* subsessionSource = subsession->readSource();
+    if (subsessionSource == NULL) continue;
+
+    if (subsessionSource->isCurrentlyAwaitingData()) continue;
+
+    SubsessionIOState* ioState
+      = (SubsessionIOState*)(subsession->miscPtr);
+    if (ioState == NULL) continue;
+
+    haveActiveSubsessions = True;
+    unsigned char* toPtr = ioState->fBuffer->dataEnd();
+    unsigned toSize = ioState->fBuffer->bytesAvailable();
+    subsessionSource->getNextFrame(toPtr, toSize,
+				   afterGettingFrame, ioState,
+				   onSourceClosure, ioState);
+  }
+  if (!haveActiveSubsessions) {
+    envir().setResultMsg("No subsessions are currently active");
+    return False;
+  }
+
+  return True;
+}
+
+void QuickTimeFileSink
+::afterGettingFrame(void* clientData, unsigned packetDataSize,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned /*durationInMicroseconds*/) {
+  SubsessionIOState* ioState = (SubsessionIOState*)clientData;
+  if (!ioState->syncOK(presentationTime)) {
+    // Ignore this data:
+    ioState->fOurSink.continuePlaying();
+    return;
+  }
+  if (numTruncatedBytes > 0) {
+    ioState->envir() << "QuickTimeFileSink::afterGettingFrame(): The input frame data was too large for our buffer.  "
+                     << numTruncatedBytes
+                     << " bytes of trailing data was dropped!  Correct this by increasing the \"bufferSize\" parameter in the \"createNew()\" call.\n";
+  }
+  ioState->afterGettingFrame(packetDataSize, presentationTime);
+}
+
+void QuickTimeFileSink::onSourceClosure(void* clientData) {
+  SubsessionIOState* ioState = (SubsessionIOState*)clientData;
+  ioState->onSourceClosure();
+}
+
+void QuickTimeFileSink::onSourceClosure1() {
+  // Check whether *all* of the subsession sources have closed.
+  // If not, do nothing for now:
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    SubsessionIOState* ioState
+      = (SubsessionIOState*)(subsession->miscPtr);
+    if (ioState == NULL) continue;
+
+    if (ioState->fOurSourceIsActive) return; // this source hasn't closed
+  }
+
+  completeOutputFile();
+
+  // Call our specified 'after' function:
+  if (fAfterFunc != NULL) {
+    (*fAfterFunc)(fAfterClientData);
+  }
+}
+
+void QuickTimeFileSink::onRTCPBye(void* clientData) {
+  SubsessionIOState* ioState = (SubsessionIOState*)clientData;
+
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+  unsigned secsDiff
+    = timeNow.tv_sec - ioState->fOurSink.fStartTime.tv_sec;
+
+  MediaSubsession& subsession = ioState->fOurSubsession;
+  ioState->envir() << "Received RTCP \"BYE\" on \""
+		   << subsession.mediumName()
+		   << "/" << subsession.codecName()
+		   << "\" subsession (after "
+		   << secsDiff << " seconds)\n";
+
+  // Handle the reception of a RTCP "BYE" as if the source had closed:
+  ioState->onSourceClosure();
+}
+
+static Boolean timevalGE(struct timeval const& tv1,
+			 struct timeval const& tv2) {
+  return (unsigned)tv1.tv_sec > (unsigned)tv2.tv_sec
+    || (tv1.tv_sec == tv2.tv_sec
+	&& (unsigned)tv1.tv_usec >= (unsigned)tv2.tv_usec);
+}
+
+void QuickTimeFileSink::completeOutputFile() {
+  if (fHaveCompletedOutputFile || fOutFid == NULL) return;
+
+  // Begin by filling in the initial "mdat" atom with the current
+  // file size:
+  int64_t curFileSize = TellFile64(fOutFid);
+  setWord64(fMDATposition, (u_int64_t)curFileSize);
+
+  // Then, note the time of the first received data:
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    SubsessionIOState* ioState
+      = (SubsessionIOState*)(subsession->miscPtr);
+    if (ioState == NULL) continue;
+
+    ChunkDescriptor* const headChunk = ioState->fHeadChunk;
+    if (headChunk != NULL
+	&& timevalGE(fFirstDataTime, headChunk->fPresentationTime)) {
+      fFirstDataTime = headChunk->fPresentationTime;
+    }
+  }
+
+  // Then, update the QuickTime-specific state for each active track:
+  iter.reset();
+  while ((subsession = iter.next()) != NULL) {
+    SubsessionIOState* ioState
+      = (SubsessionIOState*)(subsession->miscPtr);
+    if (ioState == NULL) continue;
+
+    ioState->setFinalQTstate();
+    // Do the same for a hint track (if any):
+    if (ioState->hasHintTrack()) {
+      ioState->fHintTrackForUs->setFinalQTstate();
+    }
+  }
+
+  if (fGenerateMP4Format) {
+    // Begin with a "ftyp" atom:
+    addAtom_ftyp();
+  }
+
+  // Then, add a "moov" atom for the file metadata:
+  addAtom_moov();
+
+  // We're done:
+  fHaveCompletedOutputFile = True;
+}
+
+
+////////// SubsessionIOState, ChunkDescriptor implementation ///////////
+
+unsigned SubsessionIOState::fCurrentTrackNumber = 0;
+
+SubsessionIOState::SubsessionIOState(QuickTimeFileSink& sink,
+				     MediaSubsession& subsession)
+  : fHintTrackForUs(NULL), fTrackHintedByUs(NULL),
+    fOurSink(sink), fOurSubsession(subsession),
+    fLastPacketRTPSeqNum(0), fHaveBeenSynced(False), fQTTotNumSamples(0), 
+    fHeadChunk(NULL), fTailChunk(NULL), fNumChunks(0),
+    fHeadSyncFrame(NULL), fTailSyncFrame(NULL) {
+  fTrackID = ++fCurrentTrackNumber;
+
+  fBuffer = new SubsessionBuffer(fOurSink.fBufferSize);
+  fPrevBuffer = sink.fPacketLossCompensate
+    ? new SubsessionBuffer(fOurSink.fBufferSize) : NULL;
+
+  FramedSource* subsessionSource = subsession.readSource();
+  fOurSourceIsActive = subsessionSource != NULL;
+
+  fPrevFrameState.presentationTime.tv_sec = 0;
+  fPrevFrameState.presentationTime.tv_usec = 0;
+  fPrevFrameState.seqNum = 0;
+}
+
+SubsessionIOState::~SubsessionIOState() {
+  delete fBuffer; delete fPrevBuffer;
+
+  // Delete the list of chunk descriptors:
+  ChunkDescriptor* chunk = fHeadChunk;
+  while (chunk != NULL) {
+    ChunkDescriptor* next = chunk->fNextChunk;
+    delete chunk;
+    chunk = next;
+  }
+
+  // Delete the list of sync frames:
+  SyncFrame* syncFrame = fHeadSyncFrame;
+  while (syncFrame != NULL) {
+    SyncFrame* next = syncFrame->nextSyncFrame;
+    delete syncFrame;
+    syncFrame = next;
+  }
+}
+
+Boolean SubsessionIOState::setQTstate() {
+  char const* noCodecWarning1 = "Warning: We don't implement a QuickTime ";
+  char const* noCodecWarning2 = " Media Data Type for the \"";
+  char const* noCodecWarning3 = "\" track, so we'll insert a dummy \"????\" Media Data Atom instead.  A separate, codec-specific editing pass will be needed before this track can be played.\n";
+
+  do {
+    fQTEnableTrack = True; // enable this track in the movie by default
+    fQTTimeScale = fOurSubsession.rtpTimestampFrequency(); // by default
+    fQTTimeUnitsPerSample = 1; // by default
+    fQTBytesPerFrame = 0;
+        // by default - indicates that the whole packet data is a frame
+    fQTSamplesPerFrame = 1; // by default
+
+    // Make sure our subsession's medium is one that we know how to
+    // represent in a QuickTime file:
+    if (isHintTrack()) {
+      // Hint tracks are treated specially
+      fQTEnableTrack = False; // hint tracks are marked as inactive
+      fQTcomponentSubtype = fourChar('h','i','n','t');
+      fQTcomponentName = "hint media handler";
+      fQTMediaInformationAtomCreator = &QuickTimeFileSink::addAtom_gmhd;
+      fQTMediaDataAtomCreator = &QuickTimeFileSink::addAtom_rtp;
+    } else if (strcmp(fOurSubsession.mediumName(), "audio") == 0) {
+      fQTcomponentSubtype = fourChar('s','o','u','n');
+      fQTcomponentName = "Apple Sound Media Handler";
+      fQTMediaInformationAtomCreator = &QuickTimeFileSink::addAtom_smhd;
+      fQTMediaDataAtomCreator
+	= &QuickTimeFileSink::addAtom_soundMediaGeneral; // by default
+      fQTSoundSampleVersion = 0; // by default
+
+      // Make sure that our subsession's codec is one that we can handle:
+      if (strcmp(fOurSubsession.codecName(), "X-QT") == 0 ||
+	  strcmp(fOurSubsession.codecName(), "X-QUICKTIME") == 0) {
+	fQTMediaDataAtomCreator = &QuickTimeFileSink::addAtom_genericMedia;
+      } else if (strcmp(fOurSubsession.codecName(), "PCMU") == 0) {
+	fQTAudioDataType = "ulaw";
+	fQTBytesPerFrame = 1;
+      } else if (strcmp(fOurSubsession.codecName(), "GSM") == 0) {
+	fQTAudioDataType = "agsm";
+	fQTBytesPerFrame = 33;
+	fQTSamplesPerFrame = 160;
+      } else if (strcmp(fOurSubsession.codecName(), "PCMA") == 0) {
+	fQTAudioDataType = "alaw";
+	fQTBytesPerFrame = 1;
+      } else if (strcmp(fOurSubsession.codecName(), "QCELP") == 0) {
+	fQTMediaDataAtomCreator = &QuickTimeFileSink::addAtom_Qclp;
+	fQTSamplesPerFrame = 160;
+      } else if (strcmp(fOurSubsession.codecName(), "MPEG4-GENERIC") == 0 ||
+		 strcmp(fOurSubsession.codecName(), "MP4A-LATM") == 0) {
+	fQTMediaDataAtomCreator = &QuickTimeFileSink::addAtom_mp4a;
+	fQTTimeUnitsPerSample = 1024; // QT considers each frame to be a 'sample'
+	// The time scale (frequency) comes from the 'config' information.
+	// It might be different from the RTP timestamp frequency (e.g., aacPlus).
+	unsigned frequencyFromConfig
+	  = samplingFrequencyFromAudioSpecificConfig(fOurSubsession.fmtp_config());
+	if (frequencyFromConfig != 0) fQTTimeScale = frequencyFromConfig;
+      } else {
+	envir() << noCodecWarning1 << "Audio" << noCodecWarning2
+		<< fOurSubsession.codecName() << noCodecWarning3;
+	fQTMediaDataAtomCreator = &QuickTimeFileSink::addAtom_dummy;
+	fQTEnableTrack = False; // disable this track in the movie
+      }
+    } else if (strcmp(fOurSubsession.mediumName(), "video") == 0) {
+      fQTcomponentSubtype = fourChar('v','i','d','e');
+      fQTcomponentName = "Apple Video Media Handler";
+      fQTMediaInformationAtomCreator = &QuickTimeFileSink::addAtom_vmhd;
+
+      // Make sure that our subsession's codec is one that we can handle:
+      if (strcmp(fOurSubsession.codecName(), "X-QT") == 0 ||
+	  strcmp(fOurSubsession.codecName(), "X-QUICKTIME") == 0) {
+	fQTMediaDataAtomCreator = &QuickTimeFileSink::addAtom_genericMedia;
+      } else if (strcmp(fOurSubsession.codecName(), "H263-1998") == 0 ||
+		 strcmp(fOurSubsession.codecName(), "H263-2000") == 0) {
+	fQTMediaDataAtomCreator = &QuickTimeFileSink::addAtom_h263;
+	fQTTimeScale = 600;
+	fQTTimeUnitsPerSample = fQTTimeScale/fOurSink.fMovieFPS;
+      } else if (strcmp(fOurSubsession.codecName(), "H264") == 0) {
+	fQTMediaDataAtomCreator = &QuickTimeFileSink::addAtom_avc1;
+	fQTTimeScale = 600;
+	fQTTimeUnitsPerSample = fQTTimeScale/fOurSink.fMovieFPS;
+      } else if (strcmp(fOurSubsession.codecName(), "MP4V-ES") == 0) {
+	fQTMediaDataAtomCreator = &QuickTimeFileSink::addAtom_mp4v;
+	fQTTimeScale = 600;
+	fQTTimeUnitsPerSample = fQTTimeScale/fOurSink.fMovieFPS;
+      } else {
+	envir() << noCodecWarning1 << "Video" << noCodecWarning2
+		<< fOurSubsession.codecName() << noCodecWarning3;
+	fQTMediaDataAtomCreator = &QuickTimeFileSink::addAtom_dummy;
+	fQTEnableTrack = False; // disable this track in the movie
+      }
+    } else {
+      envir() << "Warning: We don't implement a QuickTime Media Handler for media type \""
+	      << fOurSubsession.mediumName() << "\"";
+      break;
+    }
+
+#ifdef QT_SUPPORT_PARTIALLY_ONLY
+    envir() << "Warning: We don't have sufficient codec-specific information (e.g., sample sizes) to fully generate the \""
+	    << fOurSubsession.mediumName() << "/" << fOurSubsession.codecName()
+	    << "\" track, so we'll disable this track in the movie.  A separate, codec-specific editing pass will be needed before this track can be played\n";
+    fQTEnableTrack = False; // disable this track in the movie
+#endif
+
+    return True;
+  } while (0);
+
+  envir() << ", so a track for the \"" << fOurSubsession.mediumName()
+	  << "/" << fOurSubsession.codecName()
+	  << "\" subsession will not be included in the output QuickTime file\n";
+  return False;
+}
+
+void SubsessionIOState::setFinalQTstate() {
+  // Compute derived parameters, by running through the list of chunks:
+  fQTDurationT = 0;
+
+  ChunkDescriptor* chunk = fHeadChunk;
+  while (chunk != NULL) {
+    unsigned const numFrames = chunk->fNumFrames;
+    unsigned const dur = numFrames*chunk->fFrameDuration;
+    fQTDurationT += dur;
+
+    chunk = chunk->fNextChunk;
+  }
+
+  // Convert this duration from track to movie time scale:
+  double scaleFactor = fOurSink.movieTimeScale()/(double)fQTTimeScale;
+  fQTDurationM = (unsigned)(fQTDurationT*scaleFactor);
+
+  if (fQTDurationM > fOurSink.fMaxTrackDurationM) {
+    fOurSink.fMaxTrackDurationM = fQTDurationM;
+  }
+}
+
+void SubsessionIOState::afterGettingFrame(unsigned packetDataSize,
+					  struct timeval presentationTime) {
+  // Begin by checking whether there was a gap in the RTP stream.
+  // If so, try to compensate for this (if desired):
+  if (fOurSubsession.rtpSource() != NULL) { // we have a RTP stream
+    unsigned short rtpSeqNum
+      = fOurSubsession.rtpSource()->curPacketRTPSeqNum();
+    if (fOurSink.fPacketLossCompensate && fPrevBuffer->bytesInUse() > 0) {
+      short seqNumGap = rtpSeqNum - fLastPacketRTPSeqNum;
+      for (short i = 1; i < seqNumGap; ++i) {
+	// Insert a copy of the previous frame, to compensate for the loss:
+	useFrame(*fPrevBuffer);
+      }
+    }
+    fLastPacketRTPSeqNum = rtpSeqNum;
+  }
+
+  // Now, continue working with the frame that we just got
+  fOurSink.noteRecordedFrame(fOurSubsession, packetDataSize, presentationTime);
+
+  if (fBuffer->bytesInUse() == 0) {
+    fBuffer->setPresentationTime(presentationTime);
+  }
+  fBuffer->addBytes(packetDataSize);
+
+  // If our RTP source is a "QuickTimeGenericRTPSource", then
+  // use its 'qtState' to set some parameters that we need:
+  if (fOurSubsession.rtpSource() != NULL // we have a RTP stream
+      && fQTMediaDataAtomCreator == &QuickTimeFileSink::addAtom_genericMedia) {
+    QuickTimeGenericRTPSource* rtpSource
+      = (QuickTimeGenericRTPSource*)fOurSubsession.rtpSource();
+    QuickTimeGenericRTPSource::QTState& qtState = rtpSource->qtState;
+    fQTTimeScale = qtState.timescale;
+    if (qtState.width != 0) {
+      fOurSink.fMovieWidth = qtState.width;
+    }
+    if (qtState.height != 0) {
+      fOurSink.fMovieHeight = qtState.height;
+    }
+
+    // Also, if the media type in the "sdAtom" is one that we recognize
+    // to have a special parameters, then fix this here:
+    if (qtState.sdAtomSize >= 8) {
+      char const* atom = qtState.sdAtom;
+      unsigned mediaType = fourChar(atom[4],atom[5],atom[6],atom[7]);
+      switch (mediaType) {
+      case fourChar('a','g','s','m'): {
+	fQTBytesPerFrame = 33;
+	fQTSamplesPerFrame = 160;
+	break;
+      }
+      case fourChar('Q','c','l','p'): {
+	fQTBytesPerFrame = 35;
+	fQTSamplesPerFrame = 160;
+	break;
+      }
+      case fourChar('H','c','l','p'): {
+	fQTBytesPerFrame = 17;
+	fQTSamplesPerFrame = 160;
+	break;
+      }
+      case fourChar('h','2','6','3'): {
+	fQTTimeUnitsPerSample = fQTTimeScale/fOurSink.fMovieFPS;
+	break;
+      }
+      }
+    }
+  } else if (fQTMediaDataAtomCreator == &QuickTimeFileSink::addAtom_Qclp) {
+    // For QCELP data, make a note of the frame size (even though it's the
+    // same as the packet data size), because it varies depending on the
+    // 'rate' of the stream, and this size gets used later when setting up
+    // the 'Qclp' QuickTime atom:
+    fQTBytesPerFrame = packetDataSize;
+  }
+
+  useFrame(*fBuffer);
+  if (fOurSink.fPacketLossCompensate) {
+    // Save this frame, in case we need it for recovery:
+    SubsessionBuffer* tmp = fPrevBuffer; // assert: != NULL
+    fPrevBuffer = fBuffer;
+    fBuffer = tmp;
+  }
+  fBuffer->reset(); // for the next input
+
+  // Now, try getting more frames:
+  fOurSink.continuePlaying();
+}
+
+void SubsessionIOState::useFrame(SubsessionBuffer& buffer) {
+  unsigned char* const frameSource = buffer.dataStart();
+  unsigned const frameSize = buffer.bytesInUse();
+  struct timeval const& presentationTime = buffer.presentationTime();
+  int64_t const destFileOffset = TellFile64(fOurSink.fOutFid);
+  unsigned sampleNumberOfFrameStart = fQTTotNumSamples + 1;
+  Boolean avcHack = fQTMediaDataAtomCreator == &QuickTimeFileSink::addAtom_avc1;
+
+  // If we're not syncing streams, or this subsession is not video, then
+  // just give this frame a fixed duration:
+  if (!fOurSink.fSyncStreams
+      || fQTcomponentSubtype != fourChar('v','i','d','e')) {
+    unsigned const frameDuration = fQTTimeUnitsPerSample*fQTSamplesPerFrame;
+    unsigned frameSizeToUse = frameSize;
+    if (avcHack) frameSizeToUse += 4; // H.264/AVC gets the frame size prefix
+
+    fQTTotNumSamples += useFrame1(frameSizeToUse, presentationTime, frameDuration, destFileOffset);
+  } else {
+    // For synced video streams, we use the difference between successive
+    // frames' presentation times as the 'frame duration'.  So, record
+    // information about the *previous* frame:
+    struct timeval const& ppt = fPrevFrameState.presentationTime; //abbrev
+    if (ppt.tv_sec != 0 || ppt.tv_usec != 0) {
+      // There has been a previous frame.
+      double duration = (presentationTime.tv_sec - ppt.tv_sec)
+	+ (presentationTime.tv_usec - ppt.tv_usec)/1000000.0;
+      if (duration < 0.0) duration = 0.0;
+      unsigned frameDuration
+	= (unsigned)((2*duration*fQTTimeScale+1)/2); // round
+      unsigned frameSizeToUse = fPrevFrameState.frameSize;
+      if (avcHack) frameSizeToUse += 4; // H.264/AVC gets the frame size prefix
+
+      unsigned numSamples
+	= useFrame1(frameSizeToUse, ppt, frameDuration, fPrevFrameState.destFileOffset);
+      fQTTotNumSamples += numSamples;
+      sampleNumberOfFrameStart = fQTTotNumSamples + 1;
+    }
+
+    if (avcHack && (*frameSource == H264_IDR_FRAME)) {
+      SyncFrame* newSyncFrame = new SyncFrame(fQTTotNumSamples + 1);
+      if (fTailSyncFrame == NULL) {
+        fHeadSyncFrame = newSyncFrame;
+      } else {
+        fTailSyncFrame->nextSyncFrame = newSyncFrame;
+      }
+      fTailSyncFrame = newSyncFrame;
+    }
+
+    // Remember the current frame for next time:
+    fPrevFrameState.frameSize = frameSize;
+    fPrevFrameState.presentationTime = presentationTime;
+    fPrevFrameState.destFileOffset = destFileOffset;
+  }
+
+  if (avcHack) fOurSink.addWord(frameSize);
+
+  // Write the data into the file:
+  fwrite(frameSource, 1, frameSize, fOurSink.fOutFid);
+
+  // If we have a hint track, then write to it also (only if we have a RTP stream):
+  if (hasHintTrack() && fOurSubsession.rtpSource() != NULL) {
+    // Because presentation times are used for RTP packet timestamps,
+    // we don't starting writing to the hint track until we've been synced:
+    if (!fHaveBeenSynced) {
+      fHaveBeenSynced = fOurSubsession.rtpSource()->hasBeenSynchronizedUsingRTCP();
+    }
+    if (fHaveBeenSynced) {
+      fHintTrackForUs->useFrameForHinting(frameSize, presentationTime,
+					  sampleNumberOfFrameStart);
+    }
+  }
+}
+
+void SubsessionIOState::useFrameForHinting(unsigned frameSize,
+					   struct timeval presentationTime,
+					   unsigned startSampleNumber) {
+  // At this point, we have a single, combined frame - not individual packets.
+  // For the hint track, we need to split the frame back up into separate packets.
+  // However, for some RTP sources, then we also need to reuse the special
+  // header bytes that were at the start of each of the RTP packets.
+  Boolean hack263 = strcmp(fOurSubsession.codecName(), "H263-1998") == 0;
+  Boolean hackm4a_generic = strcmp(fOurSubsession.mediumName(), "audio") == 0
+    && strcmp(fOurSubsession.codecName(), "MPEG4-GENERIC") == 0;
+  Boolean hackm4a_latm = strcmp(fOurSubsession.mediumName(), "audio") == 0
+    && strcmp(fOurSubsession.codecName(), "MP4A-LATM") == 0;
+  Boolean hackm4a = hackm4a_generic || hackm4a_latm;
+  Boolean haveSpecialHeaders = (hack263 || hackm4a_generic);
+
+  // If there has been a previous frame, then output a 'hint sample' for it.
+  // (We use the current frame's presentation time to compute the previous
+  // hint sample's duration.)
+  RTPSource* const rs = fOurSubsession.rtpSource(); // abbrev (ASSERT: != NULL)
+  struct timeval const& ppt = fPrevFrameState.presentationTime; //abbrev
+  if (ppt.tv_sec != 0 || ppt.tv_usec != 0) {
+    double duration = (presentationTime.tv_sec - ppt.tv_sec)
+      + (presentationTime.tv_usec - ppt.tv_usec)/1000000.0;
+    if (duration < 0.0) duration = 0.0;
+    unsigned msDuration = (unsigned)(duration*1000); // milliseconds
+    if (msDuration > fHINF.dmax) fHINF.dmax = msDuration;
+    unsigned hintSampleDuration
+      = (unsigned)((2*duration*fQTTimeScale+1)/2); // round
+    if (hackm4a) {
+      // Because multiple AAC frames can appear in a RTP packet, the presentation
+      // times of the second and subsequent frames will not be accurate.
+      // So, use the known "hintSampleDuration" instead:
+      hintSampleDuration = fTrackHintedByUs->fQTTimeUnitsPerSample;
+
+      // Also, if the 'time scale' was different from the RTP timestamp frequency,
+      // (as can happen with aacPlus), then we need to scale "hintSampleDuration"
+      // accordingly:
+      if (fTrackHintedByUs->fQTTimeScale != fOurSubsession.rtpTimestampFrequency()) {
+	unsigned const scalingFactor
+	  = fOurSubsession.rtpTimestampFrequency()/fTrackHintedByUs->fQTTimeScale ;
+	hintSampleDuration *= scalingFactor;
+      }
+    }
+
+    int64_t const hintSampleDestFileOffset = TellFile64(fOurSink.fOutFid);
+
+    unsigned const maxPacketSize = 1450;
+    unsigned short numPTEntries
+      = (fPrevFrameState.frameSize + (maxPacketSize-1))/maxPacketSize; // normal case
+    unsigned char* immediateDataPtr = NULL;
+    unsigned immediateDataBytesRemaining = 0;
+    if (haveSpecialHeaders) { // special case
+      numPTEntries = fPrevFrameState.numSpecialHeaders;
+      immediateDataPtr = fPrevFrameState.specialHeaderBytes;
+      immediateDataBytesRemaining
+	= fPrevFrameState.specialHeaderBytesLength;
+    }
+    unsigned hintSampleSize
+      = fOurSink.addHalfWord(numPTEntries);// Entry count
+    hintSampleSize += fOurSink.addHalfWord(0x0000); // Reserved
+
+    unsigned offsetWithinSample = 0;
+    for (unsigned i = 0; i < numPTEntries; ++i) {
+      // Output a Packet Table entry (representing a single RTP packet):
+      unsigned short numDTEntries = 1;
+      unsigned short seqNum = fPrevFrameState.seqNum++;
+          // Note: This assumes that the input stream had no packets lost #####
+      unsigned rtpHeader = fPrevFrameState.rtpHeader;
+      if (i+1 < numPTEntries) {
+	// This is not the last RTP packet, so clear the marker bit:
+	rtpHeader &=~ (1<<23);
+      }
+      unsigned dataFrameSize = (i+1 < numPTEntries)
+	? maxPacketSize : fPrevFrameState.frameSize - i*maxPacketSize; // normal case
+      unsigned sampleNumber = fPrevFrameState.startSampleNumber;
+
+      unsigned char immediateDataLen = 0;
+      if (haveSpecialHeaders) { // special case
+	++numDTEntries; // to include a Data Table entry for the special hdr
+	if (immediateDataBytesRemaining > 0) {
+	  if (hack263) {
+	    immediateDataLen = *immediateDataPtr++;
+	    --immediateDataBytesRemaining;
+	    if (immediateDataLen > immediateDataBytesRemaining) {
+	      // shouldn't happen (length byte was bad)
+	      immediateDataLen = immediateDataBytesRemaining;
+	    }
+	  } else {
+	    immediateDataLen = fPrevFrameState.specialHeaderBytesLength;
+	  }
+	}
+	dataFrameSize = fPrevFrameState.packetSizes[i] - immediateDataLen;
+
+	if (hack263) {
+	  Boolean PbitSet
+	    = immediateDataLen >= 1 && (immediateDataPtr[0]&0x4) != 0;
+	  if (PbitSet) {
+	    offsetWithinSample += 2; // to omit the two leading 0 bytes
+	  }
+	}
+      }
+
+      // Output the Packet Table:
+      hintSampleSize += fOurSink.addWord(0); // Relative transmission time
+      hintSampleSize += fOurSink.addWord(rtpHeader|seqNum);
+          // RTP header info + RTP sequence number
+      hintSampleSize += fOurSink.addHalfWord(0x0000); // Flags
+      hintSampleSize += fOurSink.addHalfWord(numDTEntries); // Entry count
+      unsigned totalPacketSize = 0;
+
+      // Output the Data Table:
+      if (haveSpecialHeaders) {
+	//   use the "Immediate Data" format (1):
+	hintSampleSize += fOurSink.addByte(1); // Source
+	unsigned char len = immediateDataLen > 14 ? 14 : immediateDataLen;
+	hintSampleSize += fOurSink.addByte(len); // Length
+	totalPacketSize += len; fHINF.dimm += len;
+	unsigned char j;
+	for (j = 0; j < len; ++j) {
+	  hintSampleSize += fOurSink.addByte(immediateDataPtr[j]); // Data
+	}
+	for (j = len; j < 14; ++j) {
+	  hintSampleSize += fOurSink.addByte(0); // Data (padding)
+	}
+
+	immediateDataPtr += immediateDataLen;
+	immediateDataBytesRemaining -= immediateDataLen;
+      }
+      //   use the "Sample Data" format (2):
+      hintSampleSize += fOurSink.addByte(2); // Source
+      hintSampleSize += fOurSink.addByte(0); // Track ref index
+      hintSampleSize += fOurSink.addHalfWord(dataFrameSize); // Length
+      totalPacketSize += dataFrameSize; fHINF.dmed += dataFrameSize;
+      hintSampleSize += fOurSink.addWord(sampleNumber); // Sample number
+      hintSampleSize += fOurSink.addWord(offsetWithinSample); // Offset
+      // Get "bytes|samples per compression block" from the hinted track:
+      unsigned short const bytesPerCompressionBlock
+	= fTrackHintedByUs->fQTBytesPerFrame;
+      unsigned short const samplesPerCompressionBlock
+	= fTrackHintedByUs->fQTSamplesPerFrame;
+      hintSampleSize += fOurSink.addHalfWord(bytesPerCompressionBlock);
+      hintSampleSize += fOurSink.addHalfWord(samplesPerCompressionBlock);
+
+      offsetWithinSample += dataFrameSize;// for the next iteration (if any)
+
+      // Tally statistics for this packet:
+      fHINF.nump += 1;
+      fHINF.tpyl += totalPacketSize;
+      totalPacketSize += 12; // add in the size of the RTP header
+      fHINF.trpy += totalPacketSize;
+      if (totalPacketSize > fHINF.pmax) fHINF.pmax = totalPacketSize;
+    }
+
+    // Make note of this completed hint sample frame:
+    fQTTotNumSamples += useFrame1(hintSampleSize, ppt, hintSampleDuration,
+				  hintSampleDestFileOffset);
+  }
+
+  // Remember this frame for next time:
+  fPrevFrameState.frameSize = frameSize;
+  fPrevFrameState.presentationTime = presentationTime;
+  fPrevFrameState.startSampleNumber = startSampleNumber;
+  fPrevFrameState.rtpHeader
+    = rs->curPacketMarkerBit()<<23
+    | (rs->rtpPayloadFormat()&0x7F)<<16;
+  if (hack263) {
+    H263plusVideoRTPSource* rs_263 = (H263plusVideoRTPSource*)rs;
+    fPrevFrameState.numSpecialHeaders = rs_263->fNumSpecialHeaders;
+    fPrevFrameState.specialHeaderBytesLength = rs_263->fSpecialHeaderBytesLength;
+    unsigned i;
+    for (i = 0; i < rs_263->fSpecialHeaderBytesLength; ++i) {
+      fPrevFrameState.specialHeaderBytes[i] = rs_263->fSpecialHeaderBytes[i];
+    }
+    for (i = 0; i < rs_263->fNumSpecialHeaders; ++i) {
+      fPrevFrameState.packetSizes[i] = rs_263->fPacketSizes[i];
+    }
+  } else if (hackm4a_generic) {
+    // Synthesize a special header, so that this frame can be in its own RTP packet.
+    unsigned const sizeLength = fOurSubsession.attrVal_unsigned("sizelength");
+    unsigned const indexLength = fOurSubsession.attrVal_unsigned("indexlength");
+    if (sizeLength + indexLength != 16) {
+      envir() << "Warning: unexpected 'sizeLength' " << sizeLength
+	      << " and 'indexLength' " << indexLength
+	      << "seen when creating hint track\n";
+    }
+    fPrevFrameState.numSpecialHeaders = 1;
+    fPrevFrameState.specialHeaderBytesLength = 4;
+    fPrevFrameState.specialHeaderBytes[0] = 0; // AU_headers_length (high byte)
+    fPrevFrameState.specialHeaderBytes[1] = 16; // AU_headers_length (low byte)
+    fPrevFrameState.specialHeaderBytes[2] = ((frameSize<<indexLength)&0xFF00)>>8;
+    fPrevFrameState.specialHeaderBytes[3] = (frameSize<<indexLength);
+    fPrevFrameState.packetSizes[0]
+      = fPrevFrameState.specialHeaderBytesLength + frameSize;
+  }
+}
+
+unsigned SubsessionIOState::useFrame1(unsigned sourceDataSize,
+				      struct timeval presentationTime,
+				      unsigned frameDuration,
+				      int64_t destFileOffset) {
+  // Figure out the actual frame size for this data:
+  unsigned frameSize = fQTBytesPerFrame;
+  if (frameSize == 0) {
+    // The entire packet data is assumed to be a frame:
+    frameSize = sourceDataSize;
+  }
+  unsigned const numFrames = sourceDataSize/frameSize;
+  unsigned const numSamples = numFrames*fQTSamplesPerFrame;
+
+  // Record the information about which 'chunk' this data belongs to:
+  ChunkDescriptor* newTailChunk;
+  if (fTailChunk == NULL) {
+    newTailChunk = fHeadChunk
+      = new ChunkDescriptor(destFileOffset, sourceDataSize,
+			    frameSize, frameDuration, presentationTime);
+  } else {
+    newTailChunk = fTailChunk->extendChunk(destFileOffset, sourceDataSize,
+					   frameSize, frameDuration,
+					   presentationTime);
+  }
+  if (newTailChunk != fTailChunk) {
+   // This data created a new chunk, rather than extending the old one
+    ++fNumChunks;
+    fTailChunk = newTailChunk;
+  }
+
+  return numSamples;
+}
+
+void SubsessionIOState::onSourceClosure() {
+  fOurSourceIsActive = False;
+  fOurSink.onSourceClosure1();
+}
+
+Boolean SubsessionIOState::syncOK(struct timeval presentationTime) {
+  QuickTimeFileSink& s = fOurSink; // abbreviation
+  if (!s.fSyncStreams || fOurSubsession.rtpSource() == NULL) return True; // we don't care
+
+  if (s.fNumSyncedSubsessions < s.fNumSubsessions) {
+    // Not all subsessions have yet been synced.  Check whether ours was
+    // one of the unsynced ones, and, if so, whether it is now synced:
+    if (!fHaveBeenSynced) {
+      // We weren't synchronized before
+      if (fOurSubsession.rtpSource()->hasBeenSynchronizedUsingRTCP()) {
+	// H264 ?
+	if (fQTMediaDataAtomCreator == &QuickTimeFileSink::addAtom_avc1) {
+	  // special case: audio + H264 video: wait until audio is in sync
+	  if ((s.fNumSubsessions == 2) && (s.fNumSyncedSubsessions < (s.fNumSubsessions - 1))) return False;
+
+	  // if audio is in sync, wait for the next IDR frame to start
+	  unsigned char* const frameSource = fBuffer->dataStart();
+	  if (*frameSource != H264_IDR_FRAME) return False;
+	}
+	// But now we are
+	fHaveBeenSynced = True;
+	fSyncTime = presentationTime;
+	++s.fNumSyncedSubsessions;
+
+	if (timevalGE(fSyncTime, s.fNewestSyncTime)) {
+	  s.fNewestSyncTime = fSyncTime;
+	}
+      }
+    }
+  }
+
+  // Check again whether all subsessions have been synced:
+  if (s.fNumSyncedSubsessions < s.fNumSubsessions) return False;
+
+  // Allow this data if it is more recent than the newest sync time:
+  return timevalGE(presentationTime, s.fNewestSyncTime);
+}
+
+void SubsessionIOState::setHintTrack(SubsessionIOState* hintedTrack,
+				     SubsessionIOState* hintTrack) {
+  if (hintedTrack != NULL) hintedTrack->fHintTrackForUs = hintTrack;
+  if (hintTrack != NULL) hintTrack->fTrackHintedByUs = hintedTrack;
+}
+
+SyncFrame::SyncFrame(unsigned frameNum)
+  : nextSyncFrame(NULL), sfFrameNum(frameNum) {
+}  
+
+void Count64::operator+=(unsigned arg) {
+  unsigned newLo = lo + arg;
+  if (newLo < lo) { // lo has overflowed
+    ++hi;
+  }
+  lo = newLo;
+}
+
+ChunkDescriptor
+::ChunkDescriptor(int64_t offsetInFile, unsigned size,
+		  unsigned frameSize, unsigned frameDuration,
+		  struct timeval presentationTime)
+  : fNextChunk(NULL), fOffsetInFile(offsetInFile),
+    fNumFrames(size/frameSize),
+    fFrameSize(frameSize), fFrameDuration(frameDuration),
+    fPresentationTime(presentationTime) {
+}
+
+ChunkDescriptor* ChunkDescriptor
+::extendChunk(int64_t newOffsetInFile, unsigned newSize,
+	      unsigned newFrameSize, unsigned newFrameDuration,
+	      struct timeval newPresentationTime) {
+  // First, check whether the new space is just at the end of this
+  // existing chunk:
+  if (newOffsetInFile == fOffsetInFile + fNumFrames*fFrameSize) {
+    // We can extend this existing chunk, provided that the frame size
+    // and frame duration have not changed:
+    if (newFrameSize == fFrameSize && newFrameDuration == fFrameDuration) {
+      fNumFrames += newSize/fFrameSize;
+      return this;
+    }
+  }
+
+  // We'll allocate a new ChunkDescriptor, and link it to the end of us:
+  ChunkDescriptor* newDescriptor
+    = new ChunkDescriptor(newOffsetInFile, newSize,
+			  newFrameSize, newFrameDuration,
+			  newPresentationTime);
+
+  fNextChunk = newDescriptor;
+
+  return newDescriptor;
+}
+
+
+////////// QuickTime-specific implementation //////////
+
+unsigned QuickTimeFileSink::addWord64(u_int64_t word) {
+  addByte((unsigned char)(word>>56)); addByte((unsigned char)(word>>48));
+  addByte((unsigned char)(word>>40)); addByte((unsigned char)(word>>32));
+  addByte((unsigned char)(word>>24)); addByte((unsigned char)(word>>16));
+  addByte((unsigned char)(word>>8)); addByte((unsigned char)(word));
+
+  return 8;
+}
+
+unsigned QuickTimeFileSink::addWord(unsigned word) {
+  addByte(word>>24); addByte(word>>16);
+  addByte(word>>8); addByte(word);
+
+  return 4;
+}
+
+unsigned QuickTimeFileSink::addHalfWord(unsigned short halfWord) {
+  addByte((unsigned char)(halfWord>>8)); addByte((unsigned char)halfWord);
+
+  return 2;
+}
+
+unsigned QuickTimeFileSink::addZeroWords(unsigned numWords) {
+  for (unsigned i = 0; i < numWords; ++i) {
+    addWord(0);
+  }
+
+  return numWords*4;
+}
+
+unsigned QuickTimeFileSink::add4ByteString(char const* str) {
+  addByte(str[0]); addByte(str[1]); addByte(str[2]); addByte(str[3]);
+
+  return 4;
+}
+
+unsigned QuickTimeFileSink::addArbitraryString(char const* str,
+					       Boolean oneByteLength) {
+  unsigned size = 0;
+  if (oneByteLength) {
+    // Begin with a byte containing the string length:
+    unsigned strLength = strlen(str);
+    if (strLength >= 256) {
+      envir() << "QuickTimeFileSink::addArbitraryString(\""
+	      << str << "\") saw string longer than we know how to handle ("
+	      << strLength << "\n";
+    }
+    size += addByte((unsigned char)strLength);
+  }
+
+  while (*str != '\0') {
+    size += addByte(*str++);
+  }
+
+  return size;
+}
+
+unsigned QuickTimeFileSink::addAtomHeader(char const* atomName) {
+  // Output a placeholder for the 4-byte size:
+  addWord(0);
+
+  // Output the 4-byte atom name:
+  add4ByteString(atomName);
+
+  return 8;
+}
+
+unsigned QuickTimeFileSink::addAtomHeader64(char const* atomName) {
+  // Output 64Bit size marker
+  addWord(1);
+
+  // Output the 4-byte atom name:
+  add4ByteString(atomName);
+
+  addWord64(0);
+
+  return 16;
+}
+
+void QuickTimeFileSink::setWord(int64_t filePosn, unsigned size) {
+  do {
+    if (SeekFile64(fOutFid, filePosn, SEEK_SET) < 0) break;
+    addWord(size);
+    if (SeekFile64(fOutFid, 0, SEEK_END) < 0) break; // go back to where we were
+
+    return;
+  } while (0);
+
+  // One of the SeekFile64()s failed, probable because we're not a seekable file
+  envir() << "QuickTimeFileSink::setWord(): SeekFile64 failed (err "
+	  << envir().getErrno() << ")\n";
+}
+
+void QuickTimeFileSink::setWord64(int64_t filePosn, u_int64_t size) {
+  do {
+    if (SeekFile64(fOutFid, filePosn, SEEK_SET) < 0) break;
+    addWord64(size);
+    if (SeekFile64(fOutFid, 0, SEEK_END) < 0) break; // go back to where we were
+
+    return;
+  } while (0);
+
+  // One of the SeekFile64()s failed, probable because we're not a seekable file
+  envir() << "QuickTimeFileSink::setWord64(): SeekFile64 failed (err "
+	  << envir().getErrno() << ")\n";
+}
+
+// Methods for writing particular atoms.  Note the following macros:
+
+#define addAtom(name) \
+    unsigned QuickTimeFileSink::addAtom_##name() { \
+    int64_t initFilePosn = TellFile64(fOutFid); \
+    unsigned size = addAtomHeader("" #name "")
+
+#define addAtomEnd \
+  setWord(initFilePosn, size); \
+  return size; \
+}
+
+addAtom(ftyp);
+  size += add4ByteString("mp42");
+  size += addWord(0x00000000);
+  size += add4ByteString("mp42");
+  size += add4ByteString("isom");
+addAtomEnd;
+
+addAtom(moov);
+  size += addAtom_mvhd();
+
+  if (fGenerateMP4Format) {
+    size += addAtom_iods();
+  }
+
+  // Add a 'trak' atom for each subsession:
+  // (For some unknown reason, QuickTime Player (5.0 at least)
+  //  doesn't display the movie correctly unless the audio track
+  //  (if present) appears before the video track.  So ensure this here.)
+  MediaSubsessionIterator iter(fInputSession);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    fCurrentIOState = (SubsessionIOState*)(subsession->miscPtr);
+    if (fCurrentIOState == NULL) continue;
+    if (strcmp(subsession->mediumName(), "audio") != 0) continue;
+
+    size += addAtom_trak();
+
+    if (fCurrentIOState->hasHintTrack()) {
+      // This track has a hint track; output it also:
+      fCurrentIOState = fCurrentIOState->fHintTrackForUs;
+      size += addAtom_trak();
+    }
+  }
+  iter.reset();
+  while ((subsession = iter.next()) != NULL) {
+    fCurrentIOState = (SubsessionIOState*)(subsession->miscPtr);
+    if (fCurrentIOState == NULL) continue;
+    if (strcmp(subsession->mediumName(), "audio") == 0) continue;
+
+    size += addAtom_trak();
+
+    if (fCurrentIOState->hasHintTrack()) {
+      // This track has a hint track; output it also:
+      fCurrentIOState = fCurrentIOState->fHintTrackForUs;
+      size += addAtom_trak();
+    }
+  }
+addAtomEnd;
+
+addAtom(mvhd);
+  size += addWord(0x00000000); // Version + Flags
+  size += addWord(fAppleCreationTime); // Creation time
+  size += addWord(fAppleCreationTime); // Modification time
+
+  // For the "Time scale" field, use the largest RTP timestamp frequency
+  // that we saw in any of the subsessions.
+  size += addWord(movieTimeScale()); // Time scale
+
+  unsigned const duration = fMaxTrackDurationM;
+  fMVHD_durationPosn = TellFile64(fOutFid);
+  size += addWord(duration); // Duration
+
+  size += addWord(0x00010000); // Preferred rate
+  size += addWord(0x01000000); // Preferred volume + Reserved[0]
+  size += addZeroWords(2); // Reserved[1-2]
+  size += addWord(0x00010000); // matrix top left corner
+  size += addZeroWords(3); // matrix
+  size += addWord(0x00010000); // matrix center
+  size += addZeroWords(3); // matrix
+  size += addWord(0x40000000); // matrix bottom right corner
+  size += addZeroWords(6); // various time fields
+  size += addWord(SubsessionIOState::fCurrentTrackNumber+1);// Next track ID
+addAtomEnd;
+
+addAtom(iods);
+  size += addWord(0x00000000); // Version + Flags
+  size += addWord(0x10808080);
+  size += addWord(0x07004FFF);
+  size += addWord(0xFF0FFFFF);
+addAtomEnd;
+
+addAtom(trak);
+  size += addAtom_tkhd();
+
+  // If we're synchronizing the media streams (or are a hint track),
+  // add an edit list that helps do this:
+  if (fCurrentIOState->fHeadChunk != NULL
+      && (fSyncStreams || fCurrentIOState->isHintTrack())) {
+    size += addAtom_edts();
+  }
+
+  // If we're generating a hint track, add a 'tref' atom:
+  if (fCurrentIOState->isHintTrack()) size += addAtom_tref();
+
+  size += addAtom_mdia();
+
+  // If we're generating a hint track, add a 'udta' atom:
+  if (fCurrentIOState->isHintTrack()) size += addAtom_udta();
+addAtomEnd;
+
+addAtom(tkhd);
+  if (fCurrentIOState->fQTEnableTrack) {
+    size += addWord(0x0000000F); // Version +  Flags
+  } else {
+    // Disable this track in the movie:
+    size += addWord(0x00000000); // Version +  Flags
+  }
+  size += addWord(fAppleCreationTime); // Creation time
+  size += addWord(fAppleCreationTime); // Modification time
+  size += addWord(fCurrentIOState->fTrackID); // Track ID
+  size += addWord(0x00000000); // Reserved
+
+  unsigned const duration = fCurrentIOState->fQTDurationM; // movie units
+  fCurrentIOState->fTKHD_durationPosn = TellFile64(fOutFid);
+  size += addWord(duration); // Duration
+  size += addZeroWords(3); // Reserved+Layer+Alternate grp
+  size += addWord(0x01000000); // Volume + Reserved
+  size += addWord(0x00010000); // matrix top left corner
+  size += addZeroWords(3); // matrix
+  size += addWord(0x00010000); // matrix center
+  size += addZeroWords(3); // matrix
+  size += addWord(0x40000000); // matrix bottom right corner
+  if (strcmp(fCurrentIOState->fOurSubsession.mediumName(), "video") == 0) {
+    size += addWord(fMovieWidth<<16); // Track width
+    size += addWord(fMovieHeight<<16); // Track height
+  } else {
+    size += addZeroWords(2); // not video: leave width and height fields zero
+  }
+addAtomEnd;
+
+addAtom(edts);
+  size += addAtom_elst();
+addAtomEnd;
+
+#define addEdit1(duration,trackPosition) do { \
+      unsigned trackDuration \
+        = (unsigned) ((2*(duration)*movieTimeScale()+1)/2); \
+            /* in movie time units */ \
+      size += addWord(trackDuration); /* Track duration */ \
+      totalDurationOfEdits += trackDuration; \
+      size += addWord(trackPosition); /* Media time */ \
+      size += addWord(0x00010000); /* Media rate (1x) */ \
+      ++numEdits; \
+} while (0)
+#define addEdit(duration) addEdit1((duration),editTrackPosition)
+#define addEmptyEdit(duration) addEdit1((duration),(~0))
+
+addAtom(elst);
+  size += addWord(0x00000000); // Version + Flags
+
+  // Add a dummy "Number of entries" field
+  // (and remember its position).  We'll fill this field in later:
+  int64_t numEntriesPosition = TellFile64(fOutFid);
+  size += addWord(0); // dummy for "Number of entries"
+  unsigned numEdits = 0;
+  unsigned totalDurationOfEdits = 0; // in movie time units
+
+  // Run through our chunks, looking at their presentation times.
+  // From these, figure out the edits that need to be made to keep
+  // the track media data in sync with the presentation times.
+
+  double const syncThreshold = 0.1; // 100 ms
+    // don't allow the track to get out of sync by more than this
+
+  struct timeval editStartTime = fFirstDataTime;
+  unsigned editTrackPosition = 0;
+  unsigned currentTrackPosition = 0;
+  double trackDurationOfEdit = 0.0;
+  unsigned chunkDuration = 0;
+
+  ChunkDescriptor* chunk = fCurrentIOState->fHeadChunk;
+  while (chunk != NULL) {
+    struct timeval const& chunkStartTime = chunk->fPresentationTime;
+    double movieDurationOfEdit
+      = (chunkStartTime.tv_sec - editStartTime.tv_sec)
+      + (chunkStartTime.tv_usec - editStartTime.tv_usec)/1000000.0;
+    trackDurationOfEdit = (currentTrackPosition-editTrackPosition)
+      / (double)(fCurrentIOState->fQTTimeScale);
+
+    double outOfSync = movieDurationOfEdit - trackDurationOfEdit;
+
+    if (outOfSync > syncThreshold) {
+      // The track's data is too short, so end this edit, add a new
+      // 'empty' edit after it, and start a new edit
+      // (at the current track posn.):
+      if (trackDurationOfEdit > 0.0) addEdit(trackDurationOfEdit);
+      addEmptyEdit(outOfSync);
+
+      editStartTime = chunkStartTime;
+      editTrackPosition = currentTrackPosition;
+    } else if (outOfSync < -syncThreshold) {
+      // The track's data is too long, so end this edit, and start
+      // a new edit (pointing at the current track posn.):
+      if (movieDurationOfEdit > 0.0) addEdit(movieDurationOfEdit);
+
+      editStartTime = chunkStartTime;
+      editTrackPosition = currentTrackPosition;
+    }
+
+    // Note the duration of this chunk:
+    unsigned numChannels = fCurrentIOState->fOurSubsession.numChannels();
+    chunkDuration = chunk->fNumFrames*chunk->fFrameDuration/numChannels;
+    currentTrackPosition += chunkDuration;
+
+    chunk = chunk->fNextChunk;
+  }
+
+  // Write out the final edit
+  trackDurationOfEdit
+      += (double)chunkDuration/fCurrentIOState->fQTTimeScale;
+  if (trackDurationOfEdit > 0.0) addEdit(trackDurationOfEdit);
+
+  // Now go back and fill in the "Number of entries" field:
+  setWord(numEntriesPosition, numEdits);
+
+  // Also, if the sum of all of the edit durations exceeds the
+  // track duration that we already computed (from sample durations),
+  // then reset the track duration to this new value:
+  if (totalDurationOfEdits > fCurrentIOState->fQTDurationM) {
+    fCurrentIOState->fQTDurationM = totalDurationOfEdits;
+    setWord(fCurrentIOState->fTKHD_durationPosn, totalDurationOfEdits);
+
+    // Also, check whether the overall movie duration needs to change:
+    if (totalDurationOfEdits > fMaxTrackDurationM) {
+      fMaxTrackDurationM = totalDurationOfEdits;
+      setWord(fMVHD_durationPosn, totalDurationOfEdits);
+    }
+
+    // Also, convert to track time scale:
+    double scaleFactor
+      = fCurrentIOState->fQTTimeScale/(double)movieTimeScale();
+    fCurrentIOState->fQTDurationT
+      = (unsigned)(totalDurationOfEdits*scaleFactor);
+  }
+addAtomEnd;
+
+addAtom(tref);
+  size += addAtom_hint();
+addAtomEnd;
+
+addAtom(hint);
+  SubsessionIOState* hintedTrack = fCurrentIOState->fTrackHintedByUs;
+    // Assert: hintedTrack != NULL
+  size += addWord(hintedTrack->fTrackID);
+addAtomEnd;
+
+addAtom(mdia);
+  size += addAtom_mdhd();
+  size += addAtom_hdlr();
+  size += addAtom_minf();
+addAtomEnd;
+
+addAtom(mdhd);
+  size += addWord(0x00000000); // Version + Flags
+  size += addWord(fAppleCreationTime); // Creation time
+  size += addWord(fAppleCreationTime); // Modification time
+
+  unsigned const timeScale = fCurrentIOState->fQTTimeScale;
+  size += addWord(timeScale); // Time scale
+
+  unsigned const duration = fCurrentIOState->fQTDurationT; // track units
+  size += addWord(duration); // Duration
+
+  size += addWord(0x00000000); // Language+Quality
+addAtomEnd;
+
+addAtom(hdlr);
+  size += addWord(0x00000000); // Version + Flags
+  size += add4ByteString("mhlr"); // Component type
+  size += addWord(fCurrentIOState->fQTcomponentSubtype);
+    // Component subtype
+  size += add4ByteString("appl"); // Component manufacturer
+  size += addWord(0x00000000); // Component flags
+  size += addWord(0x00000000); // Component flags mask
+  size += addArbitraryString(fCurrentIOState->fQTcomponentName);
+    // Component name
+addAtomEnd;
+
+addAtom(minf);
+  SubsessionIOState::atomCreationFunc mediaInformationAtomCreator
+    = fCurrentIOState->fQTMediaInformationAtomCreator;
+  size += (this->*mediaInformationAtomCreator)();
+  size += addAtom_hdlr2();
+  size += addAtom_dinf();
+  size += addAtom_stbl();
+addAtomEnd;
+
+addAtom(smhd);
+  size += addZeroWords(2); // Version+Flags+Balance+Reserved
+addAtomEnd;
+
+addAtom(vmhd);
+  size += addWord(0x00000001); // Version + Flags
+  size += addWord(0x00408000); // Graphics mode + Opcolor[red]
+  size += addWord(0x80008000); // Opcolor[green} + Opcolor[blue]
+addAtomEnd;
+
+addAtom(gmhd);
+  size += addAtom_gmin();
+addAtomEnd;
+
+addAtom(gmin);
+  size += addWord(0x00000000); // Version + Flags
+  // The following fields probably aren't used for hint tracks, so just
+  // use values that I've seen in other files:
+  size += addWord(0x00408000); // Graphics mode + Opcolor (1st 2 bytes)
+  size += addWord(0x80008000); // Opcolor (last 4 bytes)
+  size += addWord(0x00000000); // Balance + Reserved
+addAtomEnd;
+
+unsigned QuickTimeFileSink::addAtom_hdlr2() {
+  int64_t initFilePosn = TellFile64(fOutFid);
+  unsigned size = addAtomHeader("hdlr");
+  size += addWord(0x00000000); // Version + Flags
+  size += add4ByteString("dhlr"); // Component type
+  size += add4ByteString("alis"); // Component subtype
+  size += add4ByteString("appl"); // Component manufacturer
+  size += addZeroWords(2); // Component flags+Component flags mask
+  size += addArbitraryString("Apple Alias Data Handler"); // Component name
+addAtomEnd;
+
+addAtom(dinf);
+  size += addAtom_dref();
+addAtomEnd;
+
+addAtom(dref);
+  size += addWord(0x00000000); // Version + Flags
+  size += addWord(0x00000001); // Number of entries
+  size += addAtom_alis();
+addAtomEnd;
+
+addAtom(alis);
+  size += addWord(0x00000001); // Version + Flags
+addAtomEnd;
+
+addAtom(stbl);
+  size += addAtom_stsd();
+  size += addAtom_stts();
+  if (fCurrentIOState->fQTcomponentSubtype == fourChar('v','i','d','e')) {
+    size += addAtom_stss(); // only for video streams
+  }
+  size += addAtom_stsc();
+  size += addAtom_stsz();
+  size += addAtom_co64();
+addAtomEnd;
+
+addAtom(stsd);
+  size += addWord(0x00000000); // Version+Flags
+  size += addWord(0x00000001); // Number of entries
+  SubsessionIOState::atomCreationFunc mediaDataAtomCreator
+    = fCurrentIOState->fQTMediaDataAtomCreator;
+  size += (this->*mediaDataAtomCreator)();
+addAtomEnd;
+
+unsigned QuickTimeFileSink::addAtom_genericMedia() {
+  int64_t initFilePosn = TellFile64(fOutFid);
+
+  // Our source is assumed to be a "QuickTimeGenericRTPSource"
+  // Use its "sdAtom" state for our contents:
+  QuickTimeGenericRTPSource* rtpSource = (QuickTimeGenericRTPSource*)
+    fCurrentIOState->fOurSubsession.rtpSource();
+  unsigned size = 0;
+  if (rtpSource != NULL) {
+    QuickTimeGenericRTPSource::QTState& qtState = rtpSource->qtState;
+    char const* from = qtState.sdAtom;
+    size = qtState.sdAtomSize;
+    for (unsigned i = 0; i < size; ++i) addByte(from[i]);
+  }
+addAtomEnd;
+
+unsigned QuickTimeFileSink::addAtom_soundMediaGeneral() {
+  int64_t initFilePosn = TellFile64(fOutFid);
+  unsigned size = addAtomHeader(fCurrentIOState->fQTAudioDataType);
+
+// General sample description fields:
+  size += addWord(0x00000000); // Reserved
+  size += addWord(0x00000001); // Reserved+Data reference index
+// Sound sample description fields:
+  unsigned short const version = fCurrentIOState->fQTSoundSampleVersion;
+  size += addWord(version<<16); // Version+Revision level
+  size += addWord(0x00000000); // Vendor
+  unsigned short numChannels
+    = (unsigned short)(fCurrentIOState->fOurSubsession.numChannels());
+  size += addHalfWord(numChannels); // Number of channels
+  size += addHalfWord(0x0010); // Sample size
+  //  size += addWord(0x00000000); // Compression ID+Packet size
+  size += addWord(0xfffe0000); // Compression ID+Packet size #####
+
+  unsigned const sampleRateFixedPoint = fCurrentIOState->fQTTimeScale << 16;
+  size += addWord(sampleRateFixedPoint); // Sample rate
+addAtomEnd;
+
+unsigned QuickTimeFileSink::addAtom_Qclp() {
+  // The beginning of this atom looks just like a general Sound Media atom,
+  // except with a version field of 1:
+  int64_t initFilePosn = TellFile64(fOutFid);
+  fCurrentIOState->fQTAudioDataType = "Qclp";
+  fCurrentIOState->fQTSoundSampleVersion = 1;
+  unsigned size = addAtom_soundMediaGeneral();
+
+  // Next, add the four fields that are particular to version 1:
+  // (Later, parameterize these #####)
+  size += addWord(0x000000a0); // samples per packet
+  size += addWord(0x00000000); // ???
+  size += addWord(0x00000000); // ???
+  size += addWord(0x00000002); // bytes per sample (uncompressed)
+
+  // Other special fields are in a 'wave' atom that follows:
+  size += addAtom_wave();
+addAtomEnd;
+
+addAtom(wave);
+  size += addAtom_frma();
+  if (strcmp(fCurrentIOState->fQTAudioDataType, "Qclp") == 0) {
+    size += addWord(0x00000014); // ???
+    size += add4ByteString("Qclp"); // ???
+    if (fCurrentIOState->fQTBytesPerFrame == 35) {
+      size += addAtom_Fclp(); // full-rate QCELP
+    } else {
+      size += addAtom_Hclp(); // half-rate QCELP
+    } // what about other QCELP 'rates'??? #####
+    size += addWord(0x00000008); // ???
+    size += addWord(0x00000000); // ???
+    size += addWord(0x00000000); // ???
+    size += addWord(0x00000008); // ???
+  } else if (strcmp(fCurrentIOState->fQTAudioDataType, "mp4a") == 0) {
+    size += addWord(0x0000000c); // ???
+    size += add4ByteString("mp4a"); // ???
+    size += addWord(0x00000000); // ???
+    size += addAtom_esds(); // ESDescriptor
+    size += addWord(0x00000008); // ???
+    size += addWord(0x00000000); // ???
+  }
+addAtomEnd;
+
+addAtom(frma);
+  size += add4ByteString(fCurrentIOState->fQTAudioDataType); // ???
+addAtomEnd;
+
+addAtom(Fclp);
+ size += addWord(0x00000000); // ???
+addAtomEnd;
+
+addAtom(Hclp);
+ size += addWord(0x00000000); // ???
+addAtomEnd;
+
+unsigned QuickTimeFileSink::addAtom_mp4a() {
+  unsigned size = 0;
+  // The beginning of this atom looks just like a general Sound Media atom,
+  // except with a version field of 1:
+  int64_t initFilePosn = TellFile64(fOutFid);
+  fCurrentIOState->fQTAudioDataType = "mp4a";
+
+  if (fGenerateMP4Format) {
+    fCurrentIOState->fQTSoundSampleVersion = 0;
+    size = addAtom_soundMediaGeneral();
+    size += addAtom_esds();
+  } else {
+    fCurrentIOState->fQTSoundSampleVersion = 1;
+    size = addAtom_soundMediaGeneral();
+
+    // Next, add the four fields that are particular to version 1:
+    // (Later, parameterize these #####)
+    size += addWord(fCurrentIOState->fQTTimeUnitsPerSample);
+    size += addWord(0x00000001); // ???
+    size += addWord(0x00000001); // ???
+    size += addWord(0x00000002); // bytes per sample (uncompressed)
+
+    // Other special fields are in a 'wave' atom that follows:
+    size += addAtom_wave();
+  }
+addAtomEnd;
+
+addAtom(esds);
+  //#####
+  MediaSubsession& subsession = fCurrentIOState->fOurSubsession;
+  if (strcmp(subsession.mediumName(), "audio") == 0) {
+    // MPEG-4 audio
+    size += addWord(0x00000000); // ???
+    size += addWord(0x03808080); // ???
+    size += addWord(0x2a000000); // ???
+    size += addWord(0x04808080); // ???
+    size += addWord(0x1c401500); // ???
+    size += addWord(0x18000000); // ???
+    size += addWord(0x6d600000); // ???
+    size += addWord(0x6d600580); // ???
+    size += addByte(0x80); size += addByte(0x80); // ???
+  } else if (strcmp(subsession.mediumName(), "video") == 0) {
+    // MPEG-4 video
+    size += addWord(0x00000000); // ???
+    size += addWord(0x03330000); // ???
+    size += addWord(0x1f042b20); // ???
+    size += addWord(0x1104fd46); // ???
+    size += addWord(0x000d4e10); // ???
+    size += addWord(0x000d4e10); // ???
+    size += addByte(0x05); // ???
+  }
+
+  // Add the source's 'config' information:
+  unsigned configSize;
+  unsigned char* config
+    = parseGeneralConfigStr(subsession.fmtp_config(), configSize);
+  size += addByte(configSize);
+  for (unsigned i = 0; i < configSize; ++i) {
+    size += addByte(config[i]);
+  }
+  delete[] config;
+
+  if (strcmp(subsession.mediumName(), "audio") == 0) {
+    // MPEG-4 audio
+    size += addWord(0x06808080); // ???
+    size += addHalfWord(0x0102); // ???
+  } else {
+    // MPEG-4 video
+    size += addHalfWord(0x0601); // ???
+    size += addByte(0x02); // ???
+  }
+  //#####
+addAtomEnd;
+
+addAtom(srcq);
+  //#####
+  size += addWord(0x00000040); // ???
+  //#####
+addAtomEnd;
+
+addAtom(h263);
+// General sample description fields:
+  size += addWord(0x00000000); // Reserved
+  size += addWord(0x00000001); // Reserved+Data reference index
+// Video sample description fields:
+  size += addWord(0x00020001); // Version+Revision level
+  size += add4ByteString("appl"); // Vendor
+  size += addWord(0x00000000); // Temporal quality
+  size += addWord(0x000002fc); // Spatial quality
+  unsigned const widthAndHeight = (fMovieWidth<<16)|fMovieHeight;
+  size += addWord(widthAndHeight); // Width+height
+  size += addWord(0x00480000); // Horizontal resolution
+  size += addWord(0x00480000); // Vertical resolution
+  size += addWord(0x00000000); // Data size
+  size += addWord(0x00010548); // Frame count+Compressor name (start)
+    // "H.263"
+  size += addWord(0x2e323633); // Compressor name (continued)
+  size += addZeroWords(6); // Compressor name (continued - zero)
+  size += addWord(0x00000018); // Compressor name (final)+Depth
+  size += addHalfWord(0xffff); // Color table id
+addAtomEnd;
+
+addAtom(avc1);
+// General sample description fields:
+  size += addWord(0x00000000); // Reserved
+  size += addWord(0x00000001); // Reserved+Data       reference index
+// Video sample       description     fields:
+  size += addWord(0x00000000); // Version+Revision level
+  size += add4ByteString("appl"); // Vendor
+  size += addWord(0x00000000); // Temporal quality
+  size += addWord(0x00000000); // Spatial quality
+  unsigned const widthAndHeight       = (fMovieWidth<<16)|fMovieHeight;
+  size += addWord(widthAndHeight); // Width+height
+  size += addWord(0x00480000); // Horizontal resolution
+  size += addWord(0x00480000); // Vertical resolution
+  size += addWord(0x00000000); // Data size
+  size += addWord(0x00010548); // Frame       count+Compressor name (start)
+    // "H.264"
+  size += addWord(0x2e323634); // Compressor name (continued)
+  size += addZeroWords(6); // Compressor name (continued - zero)
+  size += addWord(0x00000018); // Compressor name (final)+Depth
+  size += addHalfWord(0xffff); // Color       table id
+  size += addAtom_avcC();
+addAtomEnd;
+
+addAtom(avcC);
+// Begin by Base-64 decoding the "sprop" parameter sets strings:
+  char* psets = strDup(fCurrentIOState->fOurSubsession.fmtp_spropparametersets());
+  if (psets == NULL) return 0;
+
+  size_t comma_pos = strcspn(psets, ",");
+  psets[comma_pos] = '\0';
+  char const* sps_b64 = psets;
+  char const* pps_b64 = &psets[comma_pos+1];
+  unsigned sps_count;
+  unsigned char* sps_data = base64Decode(sps_b64, sps_count, false);
+  unsigned pps_count;
+  unsigned char* pps_data = base64Decode(pps_b64, pps_count, false);
+
+// Then add the decoded data:
+  size += addByte(0x01); // configuration version
+  size += addByte(sps_data[1]); // profile
+  size += addByte(sps_data[2]); // profile compat
+  size += addByte(sps_data[3]); // level
+  size += addByte(0xff); /* 0b11111100 | lengthsize = 0x11 */
+  size += addByte(0xe0 | (sps_count > 0 ? 1 : 0) );
+  if (sps_count > 0) {
+    size += addHalfWord(sps_count);
+    for (unsigned i = 0; i < sps_count; i++) {
+      size += addByte(sps_data[i]);
+    }
+  }
+  size += addByte(pps_count > 0 ? 1 : 0);
+  if (pps_count > 0) {
+    size += addHalfWord(pps_count);
+    for (unsigned i = 0; i < pps_count; i++) {
+      size += addByte(pps_data[i]);
+    }
+  }
+
+// Finally, delete the data that we allocated:
+  delete[] pps_data; delete[] sps_data;
+  delete[] psets;
+addAtomEnd;
+
+addAtom(mp4v);
+// General sample description fields:
+  size += addWord(0x00000000); // Reserved
+  size += addWord(0x00000001); // Reserved+Data reference index
+// Video sample description fields:
+  size += addWord(0x00020001); // Version+Revision level
+  size += add4ByteString("appl"); // Vendor
+  size += addWord(0x00000200); // Temporal quality
+  size += addWord(0x00000400); // Spatial quality
+  unsigned const widthAndHeight = (fMovieWidth<<16)|fMovieHeight;
+  size += addWord(widthAndHeight); // Width+height
+  size += addWord(0x00480000); // Horizontal resolution
+  size += addWord(0x00480000); // Vertical resolution
+  size += addWord(0x00000000); // Data size
+  size += addWord(0x00010c4d); // Frame count+Compressor name (start)
+    // "MPEG-4 Video"
+  size += addWord(0x5045472d); // Compressor name (continued)
+  size += addWord(0x34205669); // Compressor name (continued)
+  size += addWord(0x64656f00); // Compressor name (continued)
+  size += addZeroWords(4); // Compressor name (continued - zero)
+  size += addWord(0x00000018); // Compressor name (final)+Depth
+  size += addHalfWord(0xffff); // Color table id
+  size += addAtom_esds(); // ESDescriptor
+  size += addWord(0x00000000); // ???
+addAtomEnd;
+
+unsigned QuickTimeFileSink::addAtom_rtp() {
+  int64_t initFilePosn = TellFile64(fOutFid);
+  unsigned size = addAtomHeader("rtp ");
+
+  size += addWord(0x00000000); // Reserved (1st 4 bytes)
+  size += addWord(0x00000001); // Reserved (last 2 bytes) + Data ref index
+  size += addWord(0x00010001); // Hint track version + Last compat htv
+  size += addWord(1450); // Max packet size
+
+  size += addAtom_tims();
+addAtomEnd;
+
+addAtom(tims);
+  size += addWord(fCurrentIOState->fOurSubsession.rtpTimestampFrequency());
+addAtomEnd;
+
+addAtom(stts); // Time-to-Sample
+  size += addWord(0x00000000); // Version+flags
+
+  // First, add a dummy "Number of entries" field
+  // (and remember its position).  We'll fill this field in later:
+  int64_t numEntriesPosition = TellFile64(fOutFid);
+  size += addWord(0); // dummy for "Number of entries"
+
+  // Then, run through the chunk descriptors, and enter the entries
+  // in this (compressed) Time-to-Sample table:
+  unsigned numEntries = 0, numSamplesSoFar = 0;
+  unsigned prevSampleDuration = 0;
+  unsigned const samplesPerFrame = fCurrentIOState->fQTSamplesPerFrame;
+  ChunkDescriptor* chunk = fCurrentIOState->fHeadChunk;
+  while (chunk != NULL) {
+    unsigned const sampleDuration = chunk->fFrameDuration/samplesPerFrame;
+    if (sampleDuration != prevSampleDuration) {
+      // This chunk will start a new table entry,
+      // so write out the old one (if any):
+      if (chunk != fCurrentIOState->fHeadChunk) {
+	++numEntries;
+	size += addWord(numSamplesSoFar); // Sample count
+	size += addWord(prevSampleDuration); // Sample duration
+	numSamplesSoFar = 0;
+      }
+    }
+
+    unsigned const numSamples = chunk->fNumFrames*samplesPerFrame;
+    numSamplesSoFar += numSamples;
+    prevSampleDuration = sampleDuration;
+    chunk = chunk->fNextChunk;
+  }
+
+  // Then, write out the last entry:
+  ++numEntries;
+  size += addWord(numSamplesSoFar); // Sample count
+  size += addWord(prevSampleDuration); // Sample duration
+
+  // Now go back and fill in the "Number of entries" field:
+  setWord(numEntriesPosition, numEntries);
+addAtomEnd;
+
+addAtom(stss); // Sync-Sample
+  size += addWord(0x00000000); // Version+flags
+
+  // First, add a dummy "Number of entries" field
+  // (and remember its position).  We'll fill this field in later:
+  int64_t numEntriesPosition = TellFile64(fOutFid);
+  size += addWord(0); // dummy for "Number of entries"
+
+  unsigned numEntries = 0, numSamplesSoFar = 0;
+  if (fCurrentIOState->fHeadSyncFrame != NULL) {
+    SyncFrame* currentSyncFrame = fCurrentIOState->fHeadSyncFrame;
+
+    // First, count the number of frames (to use as a sanity check; see below):
+    unsigned totNumFrames = 0;
+    for (ChunkDescriptor* chunk = fCurrentIOState->fHeadChunk; chunk != NULL; chunk = chunk->fNextChunk) totNumFrames += chunk->fNumFrames;
+
+    while (currentSyncFrame != NULL) {
+      if (currentSyncFrame->sfFrameNum >= totNumFrames) break; // sanity check
+      
+      ++numEntries;
+      size += addWord(currentSyncFrame->sfFrameNum);
+      currentSyncFrame = currentSyncFrame->nextSyncFrame;
+    }
+  } else {
+    // First, run through the chunk descriptors, counting up the total number of samples:
+    unsigned const samplesPerFrame = fCurrentIOState->fQTSamplesPerFrame;
+    ChunkDescriptor* chunk = fCurrentIOState->fHeadChunk;
+    while (chunk != NULL) {
+      unsigned const numSamples = chunk->fNumFrames*samplesPerFrame;
+      numSamplesSoFar += numSamples;
+      chunk = chunk->fNextChunk;
+    }
+  
+    // Then, write out the sample numbers that we deem correspond to 'sync samples':
+    unsigned i;
+    for (i = 0; i < numSamplesSoFar; i += 12) {
+      // For an explanation of the constant "12", see http://lists.live555.com/pipermail/live-devel/2009-July/010969.html
+      // (Perhaps we should really try to keep track of which 'samples' ('frames' for video) really are 'key frames'?)
+      size += addWord(i+1);
+      ++numEntries;
+    }
+  
+    // Then, write out the last entry (if we haven't already done so):
+    if (i != (numSamplesSoFar - 1)) {
+      size += addWord(numSamplesSoFar);
+      ++numEntries;
+    }
+  }
+
+  // Now go back and fill in the "Number of entries" field:
+  setWord(numEntriesPosition, numEntries);
+addAtomEnd;
+
+addAtom(stsc); // Sample-to-Chunk
+  size += addWord(0x00000000); // Version+flags
+
+  // First, add a dummy "Number of entries" field
+  // (and remember its position).  We'll fill this field in later:
+  int64_t numEntriesPosition = TellFile64(fOutFid);
+  size += addWord(0); // dummy for "Number of entries"
+
+  // Then, run through the chunk descriptors, and enter the entries
+  // in this (compressed) Sample-to-Chunk table:
+  unsigned numEntries = 0, chunkNumber = 0;
+  unsigned prevSamplesPerChunk = ~0;
+  unsigned const samplesPerFrame = fCurrentIOState->fQTSamplesPerFrame;
+  ChunkDescriptor* chunk = fCurrentIOState->fHeadChunk;
+  while (chunk != NULL) {
+    ++chunkNumber;
+    unsigned const samplesPerChunk = chunk->fNumFrames*samplesPerFrame;
+    if (samplesPerChunk != prevSamplesPerChunk) {
+      // This chunk will be a new table entry:
+      ++numEntries;
+      size += addWord(chunkNumber); // Chunk number
+      size += addWord(samplesPerChunk); // Samples per chunk
+      size += addWord(0x00000001); // Sample description ID
+
+      prevSamplesPerChunk = samplesPerChunk;
+    }
+    chunk = chunk->fNextChunk;
+  }
+
+  // Now go back and fill in the "Number of entries" field:
+  setWord(numEntriesPosition, numEntries);
+addAtomEnd;
+
+addAtom(stsz); // Sample Size
+  size += addWord(0x00000000); // Version+flags
+
+  // Begin by checking whether our chunks all have the same
+  // 'bytes-per-sample'.  This determines whether this atom's table
+  // has just a single entry, or multiple entries.
+  Boolean haveSingleEntryTable = True;
+  double firstBPS = 0.0;
+  ChunkDescriptor* chunk = fCurrentIOState->fHeadChunk;
+  while (chunk != NULL) {
+    double bps
+      = (double)(chunk->fFrameSize)/(fCurrentIOState->fQTSamplesPerFrame);
+    if (bps < 1.0) {
+      // I don't think a multiple-entry table would make sense in
+      // this case, so assume a single entry table ??? #####
+      break;
+    }
+
+    if (firstBPS == 0.0) {
+      firstBPS = bps;
+    } else if (bps != firstBPS) {
+      haveSingleEntryTable = False;
+      break;
+    }
+
+    chunk = chunk->fNextChunk;
+  }
+
+  unsigned sampleSize;
+  if (haveSingleEntryTable) {
+    if (fCurrentIOState->isHintTrack()
+	&& fCurrentIOState->fHeadChunk != NULL) {
+      sampleSize = fCurrentIOState->fHeadChunk->fFrameSize
+	              / fCurrentIOState->fQTSamplesPerFrame;
+    } else {
+      // The following doesn't seem right, but seems to do the right thing:
+      sampleSize = fCurrentIOState->fQTTimeUnitsPerSample; //???
+    }
+  } else {
+    sampleSize = 0; // indicates a multiple-entry table
+  }
+  size += addWord(sampleSize); // Sample size
+  unsigned const totNumSamples = fCurrentIOState->fQTTotNumSamples;
+  size += addWord(totNumSamples); // Number of entries
+
+  if (!haveSingleEntryTable) {
+    // Multiple-entry table:
+    // Run through the chunk descriptors, entering the sample sizes:
+    ChunkDescriptor* chunk = fCurrentIOState->fHeadChunk;
+    while (chunk != NULL) {
+      unsigned numSamples
+	= chunk->fNumFrames*(fCurrentIOState->fQTSamplesPerFrame);
+      unsigned sampleSize
+	= chunk->fFrameSize/(fCurrentIOState->fQTSamplesPerFrame);
+      for (unsigned i = 0; i < numSamples; ++i) {
+	size += addWord(sampleSize);
+      }
+
+      chunk = chunk->fNextChunk;
+    }
+  }
+addAtomEnd;
+
+addAtom(co64); // Chunk Offset
+  size += addWord(0x00000000); // Version+flags
+  size += addWord(fCurrentIOState->fNumChunks); // Number of entries
+
+  // Run through the chunk descriptors, entering the file offsets:
+  ChunkDescriptor* chunk = fCurrentIOState->fHeadChunk;
+  while (chunk != NULL) {
+    size += addWord64(chunk->fOffsetInFile);
+
+    chunk = chunk->fNextChunk;
+  }
+addAtomEnd;
+
+addAtom(udta);
+  size += addAtom_name();
+  size += addAtom_hnti();
+  size += addAtom_hinf();
+addAtomEnd;
+
+addAtom(name);
+  char description[100];
+  sprintf(description, "Hinted %s track",
+	  fCurrentIOState->fOurSubsession.mediumName());
+  size += addArbitraryString(description, False); // name of object
+addAtomEnd;
+
+addAtom(hnti);
+  size += addAtom_sdp();
+addAtomEnd;
+
+unsigned QuickTimeFileSink::addAtom_sdp() {
+  int64_t initFilePosn = TellFile64(fOutFid);
+  unsigned size = addAtomHeader("sdp ");
+
+  // Add this subsession's SDP lines:
+  char const* sdpLines = fCurrentIOState->fOurSubsession.savedSDPLines();
+  // We need to change any "a=control:trackID=" values to be this
+  // track's actual track id:
+  char* newSDPLines = new char[strlen(sdpLines)+100/*overkill*/];
+  char const* searchStr = "a=control:trackid=";
+  Boolean foundSearchString = False;
+  char const *p1, *p2, *p3;
+  for (p1 = sdpLines; *p1 != '\0'; ++p1) {
+    for (p2 = p1,p3 = searchStr; tolower(*p2) == *p3; ++p2,++p3) {}
+    if (*p3 == '\0') {
+      // We found the end of the search string, at p2.
+      int beforeTrackNumPosn = p2-sdpLines;
+      // Look for the subsequent track number, and skip over it:
+      int trackNumLength;
+      if (sscanf(p2, " %*d%n", &trackNumLength) < 0) break;
+      int afterTrackNumPosn = beforeTrackNumPosn + trackNumLength;
+
+      // Replace the old track number with the correct one:
+      int i;
+      for (i = 0; i < beforeTrackNumPosn; ++i) newSDPLines[i] = sdpLines[i];
+      sprintf(&newSDPLines[i], "%d", fCurrentIOState->fTrackID);
+      i = afterTrackNumPosn;
+      int j = i + strlen(&newSDPLines[i]);
+      while (1) {
+	if ((newSDPLines[j] = sdpLines[i]) == '\0') break;
+	++i; ++j;
+      }
+
+      foundSearchString = True;
+      break;
+    }
+  }
+
+  if (!foundSearchString) {
+    // Because we didn't find a "a=control:trackID=<trackId>" line,
+    // add one of our own:
+    sprintf(newSDPLines, "%s%s%d\r\n",
+	    sdpLines, searchStr, fCurrentIOState->fTrackID);
+  }
+
+  size += addArbitraryString(newSDPLines, False);
+  delete[] newSDPLines;
+addAtomEnd;
+
+addAtom(hinf);
+  size += addAtom_totl();
+  size += addAtom_npck();
+  size += addAtom_tpay();
+  size += addAtom_trpy();
+  size += addAtom_nump();
+  size += addAtom_tpyl();
+  // Is 'maxr' required? #####
+  size += addAtom_dmed();
+  size += addAtom_dimm();
+  size += addAtom_drep();
+  size += addAtom_tmin();
+  size += addAtom_tmax();
+  size += addAtom_pmax();
+  size += addAtom_dmax();
+  size += addAtom_payt();
+addAtomEnd;
+
+addAtom(totl);
+ size += addWord(fCurrentIOState->fHINF.trpy.lo);
+addAtomEnd;
+
+addAtom(npck);
+ size += addWord(fCurrentIOState->fHINF.nump.lo);
+addAtomEnd;
+
+addAtom(tpay);
+ size += addWord(fCurrentIOState->fHINF.tpyl.lo);
+addAtomEnd;
+
+addAtom(trpy);
+ size += addWord(fCurrentIOState->fHINF.trpy.hi);
+ size += addWord(fCurrentIOState->fHINF.trpy.lo);
+addAtomEnd;
+
+addAtom(nump);
+ size += addWord(fCurrentIOState->fHINF.nump.hi);
+ size += addWord(fCurrentIOState->fHINF.nump.lo);
+addAtomEnd;
+
+addAtom(tpyl);
+ size += addWord(fCurrentIOState->fHINF.tpyl.hi);
+ size += addWord(fCurrentIOState->fHINF.tpyl.lo);
+addAtomEnd;
+
+addAtom(dmed);
+ size += addWord(fCurrentIOState->fHINF.dmed.hi);
+ size += addWord(fCurrentIOState->fHINF.dmed.lo);
+addAtomEnd;
+
+addAtom(dimm);
+ size += addWord(fCurrentIOState->fHINF.dimm.hi);
+ size += addWord(fCurrentIOState->fHINF.dimm.lo);
+addAtomEnd;
+
+addAtom(drep);
+ size += addWord(0);
+ size += addWord(0);
+addAtomEnd;
+
+addAtom(tmin);
+ size += addWord(0);
+addAtomEnd;
+
+addAtom(tmax);
+ size += addWord(0);
+addAtomEnd;
+
+addAtom(pmax);
+ size += addWord(fCurrentIOState->fHINF.pmax);
+addAtomEnd;
+
+addAtom(dmax);
+ size += addWord(fCurrentIOState->fHINF.dmax);
+addAtomEnd;
+
+addAtom(payt);
+  MediaSubsession& ourSubsession = fCurrentIOState->fOurSubsession;
+  RTPSource* rtpSource = ourSubsession.rtpSource();
+  if (rtpSource != NULL) {
+    size += addWord(rtpSource->rtpPayloadFormat());
+
+    // Also, add a 'rtpmap' string: <mime-subtype>/<rtp-frequency>
+    unsigned rtpmapStringLength = strlen(ourSubsession.codecName()) + 20;
+    char* rtpmapString = new char[rtpmapStringLength];
+    sprintf(rtpmapString, "%s/%d",
+	    ourSubsession.codecName(), rtpSource->timestampFrequency());
+    size += addArbitraryString(rtpmapString);
+    delete[] rtpmapString;
+  }
+addAtomEnd;
+
+// A dummy atom (with name "????"):
+unsigned QuickTimeFileSink::addAtom_dummy() {
+    int64_t initFilePosn = TellFile64(fOutFid);
+    unsigned size = addAtomHeader("????");
+addAtomEnd;
diff --git a/liveMedia/QuickTimeGenericRTPSource.cpp b/liveMedia/QuickTimeGenericRTPSource.cpp
new file mode 100644
index 0000000..e99236b
--- /dev/null
+++ b/liveMedia/QuickTimeGenericRTPSource.cpp
@@ -0,0 +1,274 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP Sources containing generic QuickTime stream data, as defined in
+//     <http://developer.apple.com/quicktime/icefloe/dispatch026.html>
+// Implementation
+
+#include "QuickTimeGenericRTPSource.hh"
+
+///// QTGenericBufferedPacket and QTGenericBufferedPacketFactory /////
+
+// A subclass of BufferedPacket, used to separate out
+// individual frames (when PCK == 2)
+
+class QTGenericBufferedPacket: public BufferedPacket {
+public:
+  QTGenericBufferedPacket(QuickTimeGenericRTPSource& ourSource);
+  virtual ~QTGenericBufferedPacket();
+
+private: // redefined virtual functions
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+					 unsigned dataSize);
+private:
+  QuickTimeGenericRTPSource& fOurSource;
+};
+
+class QTGenericBufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+
+////////// QuickTimeGenericRTPSource //////////
+
+QuickTimeGenericRTPSource*
+QuickTimeGenericRTPSource::createNew(UsageEnvironment& env,
+				     Groupsock* RTPgs,
+				     unsigned char rtpPayloadFormat,
+				     unsigned rtpTimestampFrequency,
+				     char const* mimeTypeString) {
+  return new QuickTimeGenericRTPSource(env, RTPgs, rtpPayloadFormat,
+				       rtpTimestampFrequency,
+				       mimeTypeString);
+}
+
+QuickTimeGenericRTPSource
+::QuickTimeGenericRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			    unsigned char rtpPayloadFormat,
+			    unsigned rtpTimestampFrequency,
+			    char const* mimeTypeString)
+  : MultiFramedRTPSource(env, RTPgs,
+			 rtpPayloadFormat, rtpTimestampFrequency,
+			 new QTGenericBufferedPacketFactory),
+    fMIMEtypeString(strDup(mimeTypeString)) {
+  qtState.PCK = 0;
+  qtState.timescale = 0;
+  qtState.sdAtom = NULL;
+  qtState.sdAtomSize = qtState.width = qtState.height = 0;
+}
+
+QuickTimeGenericRTPSource::~QuickTimeGenericRTPSource() {
+  delete[] qtState.sdAtom;
+  delete[] (char*)fMIMEtypeString;
+}
+
+Boolean QuickTimeGenericRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  // The "QuickTime Header" must be at least 4 bytes in size:
+  // Extract the known fields from the first 4 bytes:
+  unsigned expectedHeaderSize = 4;
+  if (packetSize < expectedHeaderSize) return False;
+
+  unsigned char VER = (headerStart[0]&0xF0)>>4;
+  if (VER > 1) return False; // unknown header version
+  qtState.PCK = (headerStart[0]&0x0C)>>2;
+#ifdef DEBUG
+  Boolean S = (headerStart[0]&0x02) != 0;
+#endif
+  Boolean Q = (headerStart[0]&0x01) != 0;
+
+  Boolean L = (headerStart[1]&0x80) != 0;
+
+#ifdef DEBUG
+  Boolean D = (headerStart[2]&0x80) != 0;
+  unsigned short payloadId = ((headerStart[2]&0x7F)<<8)|headerStart[3];
+#endif
+  headerStart += 4;
+
+#ifdef DEBUG
+  fprintf(stderr, "PCK: %d, S: %d, Q: %d, L: %d, D: %d, payloadId: %d\n", qtState.PCK, S, Q, L, D, payloadId);
+#endif
+
+  if (Q) { // A "QuickTime Payload Description" follows
+    expectedHeaderSize += 4;
+    if (packetSize < expectedHeaderSize) return False;
+
+#ifdef DEBUG
+    Boolean K = (headerStart[0]&0x80) != 0;
+    Boolean F = (headerStart[0]&0x40) != 0;
+    Boolean A = (headerStart[0]&0x20) != 0;
+    Boolean Z = (headerStart[0]&0x10) != 0;
+#endif
+    unsigned payloadDescriptionLength = (headerStart[2]<<8)|headerStart[3];
+    headerStart += 4;
+
+#ifdef DEBUG
+    fprintf(stderr, "\tK: %d, F: %d, A: %d, Z: %d, payloadDescriptionLength: %d\n", K, F, A, Z, payloadDescriptionLength);
+#endif
+    // Make sure "payloadDescriptionLength" is valid
+    if (payloadDescriptionLength < 12) return False;
+    expectedHeaderSize += (payloadDescriptionLength - 4);
+    unsigned nonPaddedSize = expectedHeaderSize;
+    expectedHeaderSize += 3;
+    expectedHeaderSize -= expectedHeaderSize%4; // adds padding
+    if (packetSize < expectedHeaderSize) return False;
+    unsigned char padding = expectedHeaderSize - nonPaddedSize;
+
+#ifdef DEBUG
+    unsigned mediaType = (headerStart[0]<<24)|(headerStart[1]<<16)
+      |(headerStart[2]<<8)|headerStart[3];
+#endif
+    qtState.timescale = (headerStart[4]<<24)|(headerStart[5]<<16)
+      |(headerStart[6]<<8)|headerStart[7];
+    headerStart += 8;
+
+    payloadDescriptionLength -= 12;
+#ifdef DEBUG
+    fprintf(stderr, "\tmediaType: '%c%c%c%c', timescale: %d, %d bytes of TLVs left\n", mediaType>>24, (mediaType&0xFF0000)>>16, (mediaType&0xFF00)>>8, mediaType&0xFF, qtState.timescale, payloadDescriptionLength);
+#endif
+
+    while (payloadDescriptionLength > 3) {
+      unsigned short tlvLength = (headerStart[0]<<8)|headerStart[1];
+      unsigned short tlvType = (headerStart[2]<<8)|headerStart[3];
+      payloadDescriptionLength -= 4;
+      if (tlvLength > payloadDescriptionLength) return False; // bad TLV
+      headerStart += 4;
+#ifdef DEBUG
+      fprintf(stderr, "\t\tTLV '%c%c', length %d, leaving %d remaining bytes\n", tlvType>>8, tlvType&0xFF, tlvLength, payloadDescriptionLength - tlvLength);
+      for (int i = 0; i < tlvLength; ++i) fprintf(stderr, "%02x:", headerStart[i]); fprintf(stderr, "\n");
+#endif
+
+      // Check for 'TLV's that we can use for our 'qtState'
+      switch (tlvType) {
+      case ('s'<<8|'d'): { // session description atom
+	// Sanity check: the first 4 bytes of this must equal "tlvLength":
+	unsigned atomLength  = (headerStart[0]<<24)|(headerStart[1]<<16)
+	  |(headerStart[2]<<8)|(headerStart[3]);
+	if (atomLength != (unsigned)tlvLength) break;
+
+	delete[] qtState.sdAtom; qtState.sdAtom = new char[tlvLength];
+	memmove(qtState.sdAtom, headerStart, tlvLength);
+	qtState.sdAtomSize = tlvLength;
+	break;
+      }
+      case ('t'<<8|'w'): { // track width
+	qtState.width = (headerStart[0]<<8)|headerStart[1];
+	break;
+      }
+      case ('t'<<8|'h'): { // track height
+	qtState.height = (headerStart[0]<<8)|headerStart[1];
+	break;
+      }
+      }
+
+      payloadDescriptionLength -= tlvLength;
+      headerStart += tlvLength;
+    }
+    if (payloadDescriptionLength > 0) return False; // malformed TLV data
+    headerStart += padding;
+  }
+
+  if (L) { // Sample-Specific info follows
+    expectedHeaderSize += 4;
+    if (packetSize < expectedHeaderSize) return False;
+
+    unsigned ssInfoLength = (headerStart[2]<<8)|headerStart[3];
+    headerStart += 4;
+
+#ifdef DEBUG
+    fprintf(stderr, "\tssInfoLength: %d\n", ssInfoLength);
+#endif
+    // Make sure "ssInfoLength" is valid
+    if (ssInfoLength < 4) return False;
+    expectedHeaderSize += (ssInfoLength - 4);
+    unsigned nonPaddedSize = expectedHeaderSize;
+    expectedHeaderSize += 3;
+    expectedHeaderSize -= expectedHeaderSize%4; // adds padding
+    if (packetSize < expectedHeaderSize) return False;
+    unsigned char padding = expectedHeaderSize - nonPaddedSize;
+
+    ssInfoLength -= 4;
+    while (ssInfoLength > 3) {
+      unsigned short tlvLength = (headerStart[0]<<8)|headerStart[1];
+#ifdef DEBUG
+      unsigned short tlvType = (headerStart[2]<<8)|headerStart[3];
+#endif
+      ssInfoLength -= 4;
+      if (tlvLength > ssInfoLength) return False; // bad TLV
+#ifdef DEBUG
+      fprintf(stderr, "\t\tTLV '%c%c', length %d, leaving %d remaining bytes\n", tlvType>>8, tlvType&0xFF, tlvLength, ssInfoLength - tlvLength);
+      for (int i = 0; i < tlvLength; ++i) fprintf(stderr, "%02x:", headerStart[4+i]); fprintf(stderr, "\n");
+#endif
+      ssInfoLength -= tlvLength;
+      headerStart += 4 + tlvLength;
+    }
+    if (ssInfoLength > 0) return False; // malformed TLV data
+    headerStart += padding;
+  }
+
+  fCurrentPacketBeginsFrame = fCurrentPacketCompletesFrame;
+          // whether the *previous* packet ended a frame
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
+
+  resultSpecialHeaderSize = expectedHeaderSize;
+#ifdef DEBUG
+  fprintf(stderr, "Result special header size: %d\n", resultSpecialHeaderSize);
+#endif
+  return True;
+}
+
+char const* QuickTimeGenericRTPSource::MIMEtype() const {
+  if (fMIMEtypeString == NULL) return MultiFramedRTPSource::MIMEtype();
+
+  return fMIMEtypeString;
+}
+
+
+////////// QTGenericBufferedPacket and QTGenericBufferedPacketFactory impl
+
+QTGenericBufferedPacket
+::QTGenericBufferedPacket(QuickTimeGenericRTPSource& ourSource)
+  : fOurSource(ourSource) {
+}
+
+QTGenericBufferedPacket::~QTGenericBufferedPacket() {
+}
+
+unsigned QTGenericBufferedPacket::
+  nextEnclosedFrameSize(unsigned char*& framePtr, unsigned dataSize) {
+  // We use the entire packet for a frame, unless "PCK" == 2
+  if (fOurSource.qtState.PCK != 2) return dataSize;
+
+  if (dataSize < 8) return 0; // sanity check
+
+  unsigned short sampleLength = (framePtr[2]<<8)|framePtr[3];
+  // later, extract and use the "timestamp" field #####
+  framePtr += 8;
+  dataSize -= 8;
+
+  return sampleLength < dataSize ? sampleLength : dataSize;
+}
+
+BufferedPacket* QTGenericBufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* ourSource) {
+  return new QTGenericBufferedPacket((QuickTimeGenericRTPSource&)(*ourSource));
+}
diff --git a/liveMedia/RTCP.cpp b/liveMedia/RTCP.cpp
new file mode 100644
index 0000000..816588f
--- /dev/null
+++ b/liveMedia/RTCP.cpp
@@ -0,0 +1,1376 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTCP
+// Implementation
+
+#include "RTCP.hh"
+#include "GroupsockHelper.hh"
+#include "rtcp_from_spec.h"
+#if defined(__WIN32__) || defined(_WIN32) || defined(_QNX4)
+#define snprintf _snprintf
+#endif
+
+////////// RTCPMemberDatabase //////////
+
+class RTCPMemberDatabase {
+public:
+  RTCPMemberDatabase(RTCPInstance& ourRTCPInstance)
+    : fOurRTCPInstance(ourRTCPInstance), fNumMembers(1 /*ourself*/),
+      fTable(HashTable::create(ONE_WORD_HASH_KEYS)) {
+  }
+
+  virtual ~RTCPMemberDatabase() {
+	delete fTable;
+  }
+
+  Boolean isMember(u_int32_t ssrc) const {
+    return fTable->Lookup((char*)(long)ssrc) != NULL;
+  }
+
+  Boolean noteMembership(u_int32_t ssrc, unsigned curTimeCount) {
+    Boolean isNew = !isMember(ssrc);
+
+    if (isNew) {
+      ++fNumMembers;
+    }
+
+    // Record the current time, so we can age stale members
+    fTable->Add((char*)(long)ssrc, (void*)(long)curTimeCount);
+
+    return isNew;
+  }
+
+  Boolean remove(u_int32_t ssrc) {
+    Boolean wasPresent = fTable->Remove((char*)(long)ssrc);
+    if (wasPresent) {
+      --fNumMembers;
+    }
+    return wasPresent;
+  }
+
+  unsigned numMembers() const {
+    return fNumMembers;
+  }
+
+  void reapOldMembers(unsigned threshold);
+
+private:
+  RTCPInstance& fOurRTCPInstance;
+  unsigned fNumMembers;
+  HashTable* fTable;
+};
+
+void RTCPMemberDatabase::reapOldMembers(unsigned threshold) {
+  Boolean foundOldMember;
+  u_int32_t oldSSRC = 0;
+
+  do {
+    foundOldMember = False;
+
+    HashTable::Iterator* iter
+      = HashTable::Iterator::create(*fTable);
+    uintptr_t timeCount;
+    char const* key;
+    while ((timeCount = (uintptr_t)(iter->next(key))) != 0) {
+#ifdef DEBUG
+      fprintf(stderr, "reap: checking SSRC 0x%lx: %ld (threshold %d)\n", (unsigned long)key, timeCount, threshold);
+#endif
+      if (timeCount < (uintptr_t)threshold) { // this SSRC is old
+        uintptr_t ssrc = (uintptr_t)key;
+        oldSSRC = (u_int32_t)ssrc;
+        foundOldMember = True;
+      }
+    }
+    delete iter;
+
+    if (foundOldMember) {
+#ifdef DEBUG
+        fprintf(stderr, "reap: removing SSRC 0x%x\n", oldSSRC);
+#endif
+	fOurRTCPInstance.removeSSRC(oldSSRC, True);
+    }
+  } while (foundOldMember);
+}
+
+
+////////// RTCPInstance //////////
+
+static double dTimeNow() {
+    struct timeval timeNow;
+    gettimeofday(&timeNow, NULL);
+    return (double) (timeNow.tv_sec + timeNow.tv_usec/1000000.0);
+}
+
+static unsigned const maxRTCPPacketSize = 1438;
+	// bytes (1500, minus some allowance for IP, UDP, UMTP headers; SRTCP trailers)
+static unsigned const preferredRTCPPacketSize = 1000; // bytes
+
+RTCPInstance::RTCPInstance(UsageEnvironment& env, Groupsock* RTCPgs,
+			   unsigned totSessionBW,
+			   unsigned char const* cname,
+			   RTPSink* sink, RTPSource* source,
+			   Boolean isSSMTransmitter,
+			   SRTPCryptographicContext* crypto)
+  : Medium(env), fRTCPInterface(this, RTCPgs), fTotSessionBW(totSessionBW),
+    fSink(sink), fSource(source), fIsSSMTransmitter(isSSMTransmitter), fCrypto(crypto),
+    fCNAME(RTCP_SDES_CNAME, cname), fOutgoingReportCount(1),
+    fAveRTCPSize(0), fIsInitial(1), fPrevNumMembers(0),
+    fLastSentSize(0), fLastReceivedSize(0), fLastReceivedSSRC(0),
+    fTypeOfEvent(EVENT_UNKNOWN), fTypeOfPacket(PACKET_UNKNOWN_TYPE),
+    fHaveJustSentPacket(False), fLastPacketSentSize(0),
+    fByeHandlerTask(NULL), fByeWithReasonHandlerTask(NULL), fByeHandlerClientData(NULL),
+    fSRHandlerTask(NULL), fSRHandlerClientData(NULL),
+    fRRHandlerTask(NULL), fRRHandlerClientData(NULL),
+    fSpecificRRHandlerTable(NULL),
+    fAppHandlerTask(NULL), fAppHandlerClientData(NULL) {
+#ifdef DEBUG
+  fprintf(stderr, "RTCPInstance[%p]::RTCPInstance()\n", this);
+#endif
+  if (fTotSessionBW == 0) { // not allowed!
+    env << "RTCPInstance::RTCPInstance error: totSessionBW parameter should not be zero!\n";
+    fTotSessionBW = 1;
+  }
+
+  if (isSSMTransmitter) RTCPgs->multicastSendOnly(); // don't receive multicast
+
+  double timeNow = dTimeNow();
+  fPrevReportTime = fNextReportTime = timeNow;
+
+  fKnownMembers = new RTCPMemberDatabase(*this);
+  fInBuf = new unsigned char[maxRTCPPacketSize];
+  if (fKnownMembers == NULL || fInBuf == NULL) return;
+  fNumBytesAlreadyRead = 0;
+
+  fOutBuf = new OutPacketBuffer(preferredRTCPPacketSize, maxRTCPPacketSize, 1500);
+  if (fOutBuf == NULL) return;
+
+  if (fSource != NULL && fSource->RTPgs() == RTCPgs) {
+    // We're receiving RTCP reports that are multiplexed with RTP, so ask the RTP source
+    // to give them to us:
+    fSource->registerForMultiplexedRTCPPackets(this);
+  } else {
+    // Arrange to handle incoming reports from the network:
+    TaskScheduler::BackgroundHandlerProc* handler
+      = (TaskScheduler::BackgroundHandlerProc*)&incomingReportHandler;
+    fRTCPInterface.startNetworkReading(handler);
+  }
+
+  // Send our first report.
+  fTypeOfEvent = EVENT_REPORT;
+  onExpire(this);
+}
+
+struct RRHandlerRecord {
+  TaskFunc* rrHandlerTask;
+  void* rrHandlerClientData;
+};
+
+RTCPInstance::~RTCPInstance() {
+#ifdef DEBUG
+  fprintf(stderr, "RTCPInstance[%p]::~RTCPInstance()\n", this);
+#endif
+  // Begin by sending a BYE.  We have to do this immediately, without
+  // 'reconsideration', because "this" is going away.
+  fTypeOfEvent = EVENT_BYE; // not used, but...
+  sendBYE();
+
+  if (fSource != NULL && fSource->RTPgs() == fRTCPInterface.gs()) {
+    // We were receiving RTCP reports that were multiplexed with RTP, so tell the RTP source
+    // to stop giving them to us:
+    fSource->deregisterForMultiplexedRTCPPackets();
+    fRTCPInterface.forgetOurGroupsock();
+      // so that the "fRTCPInterface" destructor doesn't turn off background read handling
+  }
+
+  if (fSpecificRRHandlerTable != NULL) {
+    AddressPortLookupTable::Iterator iter(*fSpecificRRHandlerTable);
+    RRHandlerRecord* rrHandler;
+    while ((rrHandler = (RRHandlerRecord*)iter.next()) != NULL) {
+      delete rrHandler;
+    }
+    delete fSpecificRRHandlerTable;
+  }
+
+  delete fKnownMembers;
+  delete fOutBuf;
+  delete[] fInBuf;
+}
+
+void RTCPInstance::noteArrivingRR(struct sockaddr_in const& fromAddressAndPort,
+				  int tcpSocketNum, unsigned char tcpStreamChannelId) {
+  // If a 'RR handler' was set, call it now:
+
+  // Specific RR handler:
+  if (fSpecificRRHandlerTable != NULL) {
+    netAddressBits fromAddr;
+    portNumBits fromPortNum;
+    if (tcpSocketNum < 0) {
+      // Normal case: We read the RTCP packet over UDP
+      fromAddr = fromAddressAndPort.sin_addr.s_addr;
+      fromPortNum = ntohs(fromAddressAndPort.sin_port);
+    } else {
+      // Special case: We read the RTCP packet over TCP (interleaved)
+      // Hack: Use the TCP socket and channel id to look up the handler
+      fromAddr = tcpSocketNum;
+      fromPortNum = tcpStreamChannelId;
+    }
+    Port fromPort(fromPortNum);
+    RRHandlerRecord* rrHandler
+      = (RRHandlerRecord*)(fSpecificRRHandlerTable->Lookup(fromAddr, (~0), fromPort));
+    if (rrHandler != NULL) {
+      if (rrHandler->rrHandlerTask != NULL) {
+	(*(rrHandler->rrHandlerTask))(rrHandler->rrHandlerClientData);
+      }
+    }
+  }
+  
+  // General RR handler:
+  if (fRRHandlerTask != NULL) (*fRRHandlerTask)(fRRHandlerClientData);
+}
+
+RTCPInstance* RTCPInstance::createNew(UsageEnvironment& env, Groupsock* RTCPgs,
+				      unsigned totSessionBW,
+				      unsigned char const* cname,
+				      RTPSink* sink, RTPSource* source,
+				      Boolean isSSMTransmitter,
+				      SRTPCryptographicContext* crypt) {
+  return new RTCPInstance(env, RTCPgs, totSessionBW, cname, sink, source,
+			  isSSMTransmitter, crypt);
+}
+
+Boolean RTCPInstance::lookupByName(UsageEnvironment& env,
+				   char const* instanceName,
+				   RTCPInstance*& resultInstance) {
+  resultInstance = NULL; // unless we succeed
+
+  Medium* medium;
+  if (!Medium::lookupByName(env, instanceName, medium)) return False;
+
+  if (!medium->isRTCPInstance()) {
+    env.setResultMsg(instanceName, " is not a RTCP instance");
+    return False;
+  }
+
+  resultInstance = (RTCPInstance*)medium;
+  return True;
+}
+
+Boolean RTCPInstance::isRTCPInstance() const {
+  return True;
+}
+
+unsigned RTCPInstance::numMembers() const {
+  if (fKnownMembers == NULL) return 0;
+
+  return fKnownMembers->numMembers();
+}
+
+void RTCPInstance::setByeHandler(TaskFunc* handlerTask, void* clientData,
+				 Boolean handleActiveParticipantsOnly) {
+  fByeHandlerTask = handlerTask;
+  fByeWithReasonHandlerTask = NULL;
+  fByeHandlerClientData = clientData;
+  fByeHandleActiveParticipantsOnly = handleActiveParticipantsOnly;
+}
+
+void RTCPInstance::setByeWithReasonHandler(ByeWithReasonHandlerFunc* handlerTask, void* clientData,
+					   Boolean handleActiveParticipantsOnly) {
+  fByeHandlerTask = NULL;
+  fByeWithReasonHandlerTask = handlerTask;
+  fByeHandlerClientData = clientData;
+  fByeHandleActiveParticipantsOnly = handleActiveParticipantsOnly;
+}
+
+void RTCPInstance::setSRHandler(TaskFunc* handlerTask, void* clientData) {
+  fSRHandlerTask = handlerTask;
+  fSRHandlerClientData = clientData;
+}
+
+void RTCPInstance::setRRHandler(TaskFunc* handlerTask, void* clientData) {
+  fRRHandlerTask = handlerTask;
+  fRRHandlerClientData = clientData;
+}
+
+void RTCPInstance
+::setSpecificRRHandler(netAddressBits fromAddress, Port fromPort,
+		       TaskFunc* handlerTask, void* clientData) {
+  if (handlerTask == NULL && clientData == NULL) {
+    unsetSpecificRRHandler(fromAddress, fromPort);
+    return;
+  }
+
+  RRHandlerRecord* rrHandler = new RRHandlerRecord;
+  rrHandler->rrHandlerTask = handlerTask;
+  rrHandler->rrHandlerClientData = clientData;
+  if (fSpecificRRHandlerTable == NULL) {
+    fSpecificRRHandlerTable = new AddressPortLookupTable;
+  }
+  RRHandlerRecord* existingRecord = (RRHandlerRecord*)fSpecificRRHandlerTable->Add(fromAddress, (~0), fromPort, rrHandler);
+  delete existingRecord; // if any
+
+}
+
+void RTCPInstance
+::unsetSpecificRRHandler(netAddressBits fromAddress, Port fromPort) {
+  if (fSpecificRRHandlerTable == NULL) return;
+
+  RRHandlerRecord* rrHandler
+    = (RRHandlerRecord*)(fSpecificRRHandlerTable->Lookup(fromAddress, (~0), fromPort));
+  if (rrHandler != NULL) {
+    fSpecificRRHandlerTable->Remove(fromAddress, (~0), fromPort);
+    delete rrHandler;
+  }
+}
+
+void RTCPInstance::setAppHandler(RTCPAppHandlerFunc* handlerTask, void* clientData) {
+  fAppHandlerTask = handlerTask;
+  fAppHandlerClientData = clientData;
+}
+
+void RTCPInstance::sendAppPacket(u_int8_t subtype, char const* name,
+				 u_int8_t* appDependentData, unsigned appDependentDataSize) {
+  // Set up the first 4 bytes: V,PT,subtype,PT,length:
+  u_int32_t rtcpHdr = 0x80000000; // version 2, no padding
+  rtcpHdr |= (subtype&0x1F)<<24;
+  rtcpHdr |= (RTCP_PT_APP<<16);
+  unsigned length = 2 + (appDependentDataSize+3)/4;
+  rtcpHdr |= (length&0xFFFF);
+  fOutBuf->enqueueWord(rtcpHdr);
+
+  // Set up the next 4 bytes: SSRC:
+  fOutBuf->enqueueWord(fSource != NULL ? fSource->SSRC() : fSink != NULL ? fSink->SSRC() : 0);
+
+  // Set up the next 4 bytes: name:
+  char nameBytes[4];
+  nameBytes[0] = nameBytes[1] = nameBytes[2] = nameBytes[3] = '\0'; // by default
+  if (name != NULL) {
+    snprintf(nameBytes, 4, "%s", name);
+  }
+  fOutBuf->enqueue((u_int8_t*)nameBytes, 4);
+
+  // Set up the remaining bytes (if any): application-dependent data (+ padding):
+  if (appDependentData != NULL && appDependentDataSize > 0) {
+    fOutBuf->enqueue(appDependentData, appDependentDataSize);
+
+    unsigned modulo = appDependentDataSize%4;
+    unsigned paddingSize = modulo == 0 ? 0 : 4-modulo;
+    u_int8_t const paddingByte = 0x00;
+    for (unsigned i = 0; i < paddingSize; ++i) fOutBuf->enqueue(&paddingByte, 1);
+  }
+
+  // Finally, send the packet:
+  sendBuiltPacket();
+}
+
+void RTCPInstance::setStreamSocket(int sockNum,
+				   unsigned char streamChannelId) {
+  // Turn off background read handling:
+  fRTCPInterface.stopNetworkReading();
+
+  // Switch to RTCP-over-TCP:
+  fRTCPInterface.setStreamSocket(sockNum, streamChannelId);
+
+  // Turn background reading back on:
+  TaskScheduler::BackgroundHandlerProc* handler
+    = (TaskScheduler::BackgroundHandlerProc*)&incomingReportHandler;
+  fRTCPInterface.startNetworkReading(handler);
+}
+
+void RTCPInstance::addStreamSocket(int sockNum,
+				   unsigned char streamChannelId) {
+  // First, turn off background read handling for the default (UDP) socket:
+  envir().taskScheduler().turnOffBackgroundReadHandling(fRTCPInterface.gs()->socketNum());
+
+  // Add the RTCP-over-TCP interface:
+  fRTCPInterface.addStreamSocket(sockNum, streamChannelId);
+
+  // Turn on background reading for this socket (in case it's not on already):
+  TaskScheduler::BackgroundHandlerProc* handler
+    = (TaskScheduler::BackgroundHandlerProc*)&incomingReportHandler;
+  fRTCPInterface.startNetworkReading(handler);
+}
+
+void RTCPInstance
+::injectReport(u_int8_t const* packet, unsigned packetSize, struct sockaddr_in const& fromAddress) {
+  if (packetSize > maxRTCPPacketSize) packetSize = maxRTCPPacketSize;
+  memmove(fInBuf, packet, packetSize);
+
+  processIncomingReport(packetSize, fromAddress, -1, 0xFF); // assume report received over UDP
+}
+
+static unsigned const IP_UDP_HDR_SIZE = 28;
+    // overhead (bytes) of IP and UDP hdrs
+
+#define ADVANCE(n) pkt += (n); packetSize -= (n)
+
+void RTCPInstance::incomingReportHandler(RTCPInstance* instance,
+					 int /*mask*/) {
+  instance->incomingReportHandler1();
+}
+
+void RTCPInstance::incomingReportHandler1() {
+  do {
+    if (fNumBytesAlreadyRead >= maxRTCPPacketSize) {
+      envir() << "RTCPInstance error: Hit limit when reading incoming packet over TCP. (fNumBytesAlreadyRead ("
+	      << fNumBytesAlreadyRead << ") >= maxRTCPPacketSize (" << maxRTCPPacketSize
+	      << ")).  The remote endpoint is using a buggy implementation of RTP/RTCP-over-TCP.  Please upgrade it!\n";
+      break;
+    }
+
+    unsigned numBytesRead;
+    struct sockaddr_in fromAddress;
+    int tcpSocketNum;
+    unsigned char tcpStreamChannelId;
+    Boolean packetReadWasIncomplete;
+    Boolean readResult
+      = fRTCPInterface.handleRead(&fInBuf[fNumBytesAlreadyRead], maxRTCPPacketSize - fNumBytesAlreadyRead,
+				  numBytesRead, fromAddress,
+				  tcpSocketNum, tcpStreamChannelId,
+				  packetReadWasIncomplete);
+
+    unsigned packetSize = 0;
+    if (packetReadWasIncomplete) {
+      fNumBytesAlreadyRead += numBytesRead;
+      return; // more reads are needed to get the entire packet
+    } else { // normal case: We've read the entire packet 
+      packetSize = fNumBytesAlreadyRead + numBytesRead;
+      fNumBytesAlreadyRead = 0; // for next time
+    }
+    if (!readResult) break;
+
+    // Ignore the packet if it was looped-back from ourself:
+    Boolean packetWasFromOurHost = False;
+    if (RTCPgs()->wasLoopedBackFromUs(envir(), fromAddress)) {
+      packetWasFromOurHost = True;
+      // However, we still want to handle incoming RTCP packets from
+      // *other processes* on the same machine.  To distinguish this
+      // case from a true loop-back, check whether we've just sent a
+      // packet of the same size.  (This check isn't perfect, but it seems
+      // to be the best we can do.)
+      if (fHaveJustSentPacket && fLastPacketSentSize == packetSize) {
+	// This is a true loop-back:
+	fHaveJustSentPacket = False;
+	break; // ignore this packet
+      }
+    }
+
+    if (fIsSSMTransmitter && !packetWasFromOurHost) {
+      // This packet is assumed to have been received via unicast (because we're
+      // a SSM transmitter, and SSM receivers send back RTCP "RR" packets via unicast).
+      // 'Reflect' the packet by resending it to the multicast group, so that any other receivers
+      // can also get to see it.
+
+      // NOTE: Denial-of-service attacks are possible here.
+      // Users of this software may wish to add their own,
+      // application-specific mechanism for 'authenticating' the
+      // validity of this packet before reflecting it.
+
+      // NOTE: The test for "!packetWasFromOurHost" means that we won't reflect RTCP packets
+      // that come from other processes on the same host as us.  The reason for this is that the
+      // 'packet size' test above is not 100% reliable; some packets that were truly looped back
+      // from us might not be detected as such, and this might lead to infinite
+      // forwarding/receiving of some packets.  To avoid this possibility, we reflect only
+      // RTCP packets that we know for sure originated elsewhere.
+      // (Note, though, that if we ever re-enable the code in "Groupsock::multicastSendOnly()",
+      // then we could remove the test for "!packetWasFromOurHost".)
+      fRTCPInterface.sendPacket(fInBuf, packetSize);
+      fHaveJustSentPacket = True;
+      fLastPacketSentSize = packetSize;
+    }
+
+    processIncomingReport(packetSize, fromAddress, tcpSocketNum, tcpStreamChannelId);
+  } while (0);
+}
+
+void RTCPInstance
+::processIncomingReport(unsigned packetSize, struct sockaddr_in const& fromAddressAndPort,
+			int tcpSocketNum, unsigned char tcpStreamChannelId) {
+  do {
+    if (fCrypto != NULL) { // The packet is assumed to be SRTCP.  Verify/decrypt it first:
+      unsigned newPacketSize;
+      if (!fCrypto->processIncomingSRTCPPacket(fInBuf, packetSize, newPacketSize)) break;
+      packetSize = newPacketSize;
+    }
+
+    Boolean callByeHandler = False;
+    char* reason = NULL; // by default, unless/until a BYE packet with a 'reason' arrives
+    unsigned char* pkt = fInBuf;
+
+#ifdef DEBUG
+    fprintf(stderr, "[%p]saw incoming RTCP packet (from ", this);
+    if (tcpSocketNum < 0) {
+      // Note that "fromAddressAndPort" is valid only if we're receiving over UDP (not over TCP):
+      fprintf(stderr, "address %s, port %d", AddressString(fromAddressAndPort).val(), ntohs(fromAddressAndPort.sin_port));
+    } else {
+      fprintf(stderr, "TCP socket #%d, stream channel id %d", tcpSocketNum, tcpStreamChannelId);
+    }
+    fprintf(stderr, ")\n");
+    for (unsigned i = 0; i < packetSize; ++i) {
+      if (i%4 == 0) fprintf(stderr, " ");
+      fprintf(stderr, "%02x", pkt[i]);
+    }
+    fprintf(stderr, "\n");
+#endif
+    int totPacketSize = IP_UDP_HDR_SIZE + packetSize;
+
+    // Check the RTCP packet for validity:
+    // It must at least contain a header (4 bytes), and this header
+    // must be version=2, with no padding bit, and a payload type of
+    // SR (200), RR (201), or APP (204):
+    if (packetSize < 4) break;
+    unsigned rtcpHdr = ntohl(*(u_int32_t*)pkt);
+    if ((rtcpHdr & 0xE0FE0000) != (0x80000000 | (RTCP_PT_SR<<16)) &&
+	(rtcpHdr & 0xE0FF0000) != (0x80000000 | (RTCP_PT_APP<<16))) {
+#ifdef DEBUG
+      fprintf(stderr, "rejected bad RTCP packet: header 0x%08x\n", rtcpHdr);
+#endif
+      break;
+    }
+
+    // Process each of the individual RTCP 'subpackets' in (what may be)
+    // a compound RTCP packet.
+    int typeOfPacket = PACKET_UNKNOWN_TYPE;
+    unsigned reportSenderSSRC = 0;
+    Boolean packetOK = False;
+    while (1) {
+      u_int8_t rc = (rtcpHdr>>24)&0x1F;
+      u_int8_t pt = (rtcpHdr>>16)&0xFF;
+      unsigned length = 4*(rtcpHdr&0xFFFF); // doesn't count hdr
+      ADVANCE(4); // skip over the header
+      if (length > packetSize) break;
+
+      // Assume that each RTCP subpacket begins with a 4-byte SSRC:
+      if (length < 4) break; length -= 4;
+      reportSenderSSRC = ntohl(*(u_int32_t*)pkt); ADVANCE(4);
+#ifdef HACK_FOR_CHROME_WEBRTC_BUG
+      if (reportSenderSSRC == 0x00000001 && pt == RTCP_PT_RR) {
+	// Chrome (and Opera) WebRTC receivers have a bug that causes them to always send
+	// SSRC 1 in their "RR"s.  To work around this (to help us distinguish between different
+	// receivers), we use a fake SSRC in this case consisting of the IP address, XORed with
+	// the port number:
+	reportSenderSSRC = fromAddressAndPort.sin_addr.s_addr^fromAddressAndPort.sin_port;
+      }
+#endif
+
+      Boolean subPacketOK = False;
+      switch (pt) {
+        case RTCP_PT_SR: {
+#ifdef DEBUG
+	  fprintf(stderr, "SR\n");
+#endif
+	  if (length < 20) break; length -= 20;
+
+	  // Extract the NTP timestamp, and note this:
+	  unsigned NTPmsw = ntohl(*(u_int32_t*)pkt); ADVANCE(4);
+	  unsigned NTPlsw = ntohl(*(u_int32_t*)pkt); ADVANCE(4);
+	  unsigned rtpTimestamp = ntohl(*(u_int32_t*)pkt); ADVANCE(4);
+	  if (fSource != NULL) {
+	    RTPReceptionStatsDB& receptionStats
+	      = fSource->receptionStatsDB();
+	    receptionStats.noteIncomingSR(reportSenderSSRC,
+					  NTPmsw, NTPlsw, rtpTimestamp);
+	  }
+	  ADVANCE(8); // skip over packet count, octet count
+
+	  // If a 'SR handler' was set, call it now:
+	  if (fSRHandlerTask != NULL) (*fSRHandlerTask)(fSRHandlerClientData);
+
+	  // The rest of the SR is handled like a RR (so, no "break;" here)
+	}
+        case RTCP_PT_RR: {
+#ifdef DEBUG
+	  fprintf(stderr, "RR\n");
+#endif
+	  unsigned reportBlocksSize = rc*(6*4);
+	  if (length < reportBlocksSize) break;
+	  length -= reportBlocksSize;
+
+          if (fSink != NULL) {
+	    // Use this information to update stats about our transmissions:
+            RTPTransmissionStatsDB& transmissionStats = fSink->transmissionStatsDB();
+            for (unsigned i = 0; i < rc; ++i) {
+              unsigned senderSSRC = ntohl(*(u_int32_t*)pkt); ADVANCE(4);
+              // We care only about reports about our own transmission, not others'
+              if (senderSSRC == fSink->SSRC()) {
+                unsigned lossStats = ntohl(*(u_int32_t*)pkt); ADVANCE(4);
+                unsigned highestReceived = ntohl(*(u_int32_t*)pkt); ADVANCE(4);
+                unsigned jitter = ntohl(*(u_int32_t*)pkt); ADVANCE(4);
+                unsigned timeLastSR = ntohl(*(u_int32_t*)pkt); ADVANCE(4);
+                unsigned timeSinceLastSR = ntohl(*(u_int32_t*)pkt); ADVANCE(4);
+                transmissionStats.noteIncomingRR(reportSenderSSRC, fromAddressAndPort,
+						 lossStats,
+						 highestReceived, jitter,
+						 timeLastSR, timeSinceLastSR);
+              } else {
+                ADVANCE(4*5);
+              }
+            }
+          } else {
+            ADVANCE(reportBlocksSize);
+          }
+
+	  if (pt == RTCP_PT_RR) { // i.e., we didn't fall through from 'SR'
+	    noteArrivingRR(fromAddressAndPort, tcpSocketNum, tcpStreamChannelId);
+	  }
+
+	  subPacketOK = True;
+	  typeOfPacket = PACKET_RTCP_REPORT;
+	  break;
+	}
+        case RTCP_PT_BYE: {
+#ifdef DEBUG
+	  fprintf(stderr, "BYE");
+#endif
+	  // Check whether there was a 'reason for leaving':
+	  if (length > 0) {
+	    u_int8_t reasonLength = *pkt;
+	    if (reasonLength > length-1) {
+	      // The 'reason' length field is too large!
+#ifdef DEBUG
+	      fprintf(stderr, "\nError: The 'reason' length %d is too large (it should be <= %d)\n",
+		      reasonLength, length-1);
+#endif
+	      reasonLength = length-1;
+	    }
+	    reason = new char[reasonLength + 1];
+	    for (unsigned i = 0; i < reasonLength; ++i) {
+	      reason[i] = pkt[1+i];
+	    }
+	    reason[reasonLength] = '\0';
+#ifdef DEBUG
+	    fprintf(stderr, " (reason:%s)", reason);
+#endif
+	  }
+#ifdef DEBUG
+	  fprintf(stderr, "\n");
+#endif
+	  // If a 'BYE handler' was set, arrange for it to be called at the end of this routine.
+	  // (Note: We don't call it immediately, in case it happens to cause "this" to be deleted.)
+	  if ((fByeHandlerTask != NULL || fByeWithReasonHandlerTask != NULL)
+	      && (!fByeHandleActiveParticipantsOnly
+		  || (fSource != NULL
+		      && fSource->receptionStatsDB().lookup(reportSenderSSRC) != NULL)
+		  || (fSink != NULL
+		      && fSink->transmissionStatsDB().lookup(reportSenderSSRC) != NULL))) {
+	    callByeHandler = True;
+	  }
+
+	  // We should really check for & handle >1 SSRCs being present #####
+
+	  subPacketOK = True;
+	  typeOfPacket = PACKET_BYE;
+	  break;
+	}
+        case RTCP_PT_APP: {
+	  u_int8_t& subtype = rc; // In "APP" packets, the "rc" field gets used as "subtype"
+#ifdef DEBUG
+	  fprintf(stderr, "APP (subtype 0x%02x)\n", subtype);
+#endif
+	  if (length < 4) {
+#ifdef DEBUG
+	    fprintf(stderr, "\tError: No \"name\" field!\n");
+#endif
+	    break;
+	  }
+	  length -= 4;
+#ifdef DEBUG
+	  fprintf(stderr, "\tname:%c%c%c%c\n", pkt[0], pkt[1], pkt[2], pkt[3]);
+#endif
+	  u_int32_t nameBytes = (pkt[0]<<24)|(pkt[1]<<16)|(pkt[2]<<8)|(pkt[3]);
+	  ADVANCE(4); // skip over "name", to the 'application-dependent data'
+#ifdef DEBUG
+	  fprintf(stderr, "\tapplication-dependent data size: %d bytes\n", length);
+#endif
+
+	  // If an 'APP' packet handler was set, call it now:
+	  if (fAppHandlerTask != NULL) {
+	    (*fAppHandlerTask)(fAppHandlerClientData, subtype, nameBytes, pkt, length);
+	  }
+	  subPacketOK = True;
+	  typeOfPacket = PACKET_RTCP_APP;
+	  break;
+	}
+	// Other RTCP packet types that we don't yet handle:
+        case RTCP_PT_SDES: {
+#ifdef DEBUG
+	  // 'Handle' SDES packets only in debugging code, by printing out the 'SDES items':
+	  fprintf(stderr, "SDES\n");
+
+	  // Process each 'chunk':
+	  Boolean chunkOK = False;
+	  ADVANCE(-4); length += 4; // hack so that we see the first SSRC/CSRC again
+	  while (length >= 8) { // A valid chunk must be at least 8 bytes long
+	    chunkOK = False; // until we learn otherwise
+
+	    u_int32_t SSRC_CSRC = ntohl(*(u_int32_t*)pkt); ADVANCE(4); length -= 4;
+	    fprintf(stderr, "\tSSRC/CSRC: 0x%08x\n", SSRC_CSRC);
+
+	    // Process each 'SDES item' in the chunk:
+	    u_int8_t itemType = *pkt; ADVANCE(1); --length;
+	    while (itemType != 0) {
+	      unsigned itemLen = *pkt; ADVANCE(1); --length;
+	      // Make sure "itemLen" allows for at least 1 zero byte at the end of the chunk:
+	      if (itemLen + 1 > length || pkt[itemLen] != 0) break;
+
+	      fprintf(stderr, "\t\t%s:%s\n",
+		      itemType == 1 ? "CNAME" :
+		      itemType == 2 ? "NAME" :
+		      itemType == 3 ? "EMAIL" :
+		      itemType == 4 ? "PHONE" :
+		      itemType == 5 ? "LOC" :
+		      itemType == 6 ? "TOOL" :
+		      itemType == 7 ? "NOTE" :
+		      itemType == 8 ? "PRIV" :
+		      "(unknown)",
+		      itemType < 8 ? (char*)pkt // hack, because we know it's '\0'-terminated
+		      : "???"/* don't try to print out PRIV or unknown items */);
+	      ADVANCE(itemLen); length -= itemLen;
+
+	      itemType = *pkt; ADVANCE(1); --length;
+	    }
+	    if (itemType != 0) break; // bad 'SDES item'
+
+	    // Thus, itemType == 0.  This zero 'type' marks the end of the list of SDES items.
+	    // Skip over remaining zero padding bytes, so that this chunk ends on a 4-byte boundary:
+	    while (length%4 > 0 && *pkt == 0) { ADVANCE(1); --length; }
+	    if (length%4 > 0) break; // Bad (non-zero) padding byte
+
+	    chunkOK = True;
+	  }
+	  if (!chunkOK || length > 0) break; // bad chunk, or not enough bytes for the last chunk
+#endif
+	  subPacketOK = True;
+	  break;
+	}
+        case RTCP_PT_RTPFB: {
+#ifdef DEBUG
+	  fprintf(stderr, "RTPFB(unhandled)\n");
+#endif
+	  subPacketOK = True;
+	  break;
+	}
+        case RTCP_PT_PSFB: {
+#ifdef DEBUG
+	  fprintf(stderr, "PSFB(unhandled)\n");
+	  // Temporary code to show "Receiver Estimated Maximum Bitrate" (REMB) feedback reports:
+	  //#####
+	  if (length >= 12 && pkt[4] == 'R' && pkt[5] == 'E' && pkt[6] == 'M' && pkt[7] == 'B') {
+	    u_int8_t exp = pkt[9]>>2;
+	    u_int32_t mantissa = ((pkt[9]&0x03)<<16)|(pkt[10]<<8)|pkt[11];
+	    double remb = (double)mantissa;
+	    while (exp > 0) {
+	      remb *= 2.0;
+	      exp /= 2;
+	    }
+	    fprintf(stderr, "\tReceiver Estimated Max Bitrate (REMB): %g bps\n", remb);
+	  }
+#endif
+	  subPacketOK = True;
+	  break;
+	}
+        case RTCP_PT_XR: {
+#ifdef DEBUG
+	  fprintf(stderr, "XR(unhandled)\n");
+#endif
+	  subPacketOK = True;
+	  break;
+	}
+        case RTCP_PT_AVB: {
+#ifdef DEBUG
+	  fprintf(stderr, "AVB(unhandled)\n");
+#endif
+	  subPacketOK = True;
+	  break;
+	}
+        case RTCP_PT_RSI: {
+#ifdef DEBUG
+	  fprintf(stderr, "RSI(unhandled)\n");
+#endif
+	  subPacketOK = True;
+	  break;
+	}
+        case RTCP_PT_TOKEN: {
+#ifdef DEBUG
+	  fprintf(stderr, "TOKEN(unhandled)\n");
+#endif
+	  subPacketOK = True;
+	  break;
+	}
+        case RTCP_PT_IDMS: {
+#ifdef DEBUG
+	  fprintf(stderr, "IDMS(unhandled)\n");
+#endif
+	  subPacketOK = True;
+	  break;
+	}
+        default: {
+#ifdef DEBUG
+	  fprintf(stderr, "UNKNOWN TYPE(0x%x)\n", pt);
+#endif
+	  subPacketOK = True;
+	  break;
+	}
+      }
+      if (!subPacketOK) break;
+
+      // need to check for (& handle) SSRC collision! #####
+
+#ifdef DEBUG
+      fprintf(stderr, "validated RTCP subpacket: rc:%d, pt:%d, bytes remaining:%d, report sender SSRC:0x%08x\n", rc, pt, length, reportSenderSSRC);
+#endif
+
+      // Skip over any remaining bytes in this subpacket:
+      ADVANCE(length);
+
+      // Check whether another RTCP 'subpacket' follows:
+      if (packetSize == 0) {
+	packetOK = True;
+	break;
+      } else if (packetSize < 4) {
+#ifdef DEBUG
+	fprintf(stderr, "extraneous %d bytes at end of RTCP packet!\n", packetSize);
+#endif
+	break;
+      }
+      rtcpHdr = ntohl(*(u_int32_t*)pkt);
+      if ((rtcpHdr & 0xC0000000) != 0x80000000) {
+#ifdef DEBUG
+	fprintf(stderr, "bad RTCP subpacket: header 0x%08x\n", rtcpHdr);
+#endif
+	break;
+      }
+    }
+
+    if (!packetOK) {
+#ifdef DEBUG
+      fprintf(stderr, "rejected bad RTCP subpacket: header 0x%08x\n", rtcpHdr);
+#endif
+      break;
+    } else {
+#ifdef DEBUG
+      fprintf(stderr, "validated entire RTCP packet\n");
+#endif
+    }
+
+    onReceive(typeOfPacket, totPacketSize, reportSenderSSRC);
+
+    // Finally, if we need to call a "BYE" handler, do so now (in case it causes "this" to get deleted):
+    if (callByeHandler) {
+      if (fByeHandlerTask != NULL) { // call a BYE handler without including a 'reason'
+	TaskFunc* byeHandler = fByeHandlerTask;
+	fByeHandlerTask = NULL; // because we call the handler only once, by default
+	(*byeHandler)(fByeHandlerClientData);
+      } else if (fByeWithReasonHandlerTask != NULL) { // call a BYE handler that includes a 'reason'
+	ByeWithReasonHandlerFunc* byeHandler = fByeWithReasonHandlerTask;
+	fByeWithReasonHandlerTask = NULL; // because we call the handler only once, by default
+	(*byeHandler)(fByeHandlerClientData, reason);
+	    // Note that the handler function is responsible for delete[]ing "reason"
+      }
+    }
+  } while (0);
+}
+
+void RTCPInstance::onReceive(int typeOfPacket, int totPacketSize, u_int32_t ssrc) {
+  fTypeOfPacket = typeOfPacket;
+  fLastReceivedSize = totPacketSize;
+  fLastReceivedSSRC = ssrc;
+
+  int members = (int)numMembers();
+  int senders = (fSink != NULL) ? 1 : 0;
+
+  OnReceive(this, // p
+	    this, // e
+	    &members, // members
+	    &fPrevNumMembers, // pmembers
+	    &senders, // senders
+	    &fAveRTCPSize, // avg_rtcp_size
+	    &fPrevReportTime, // tp
+	    dTimeNow(), // tc
+	    fNextReportTime);
+}
+
+void RTCPInstance::sendReport() {
+#ifdef DEBUG
+  fprintf(stderr, "sending REPORT\n");
+#endif
+  // Begin by including a SR and/or RR report:
+  if (!addReport()) return;
+
+  // Then, include a SDES:
+  addSDES();
+
+  // Send the report:
+  sendBuiltPacket();
+
+  // Periodically clean out old members from our SSRC membership database:
+  const unsigned membershipReapPeriod = 5;
+  if ((++fOutgoingReportCount) % membershipReapPeriod == 0) {
+    unsigned threshold = fOutgoingReportCount - membershipReapPeriod;
+    fKnownMembers->reapOldMembers(threshold);
+  }
+}
+
+void RTCPInstance::sendBYE(char const* reason) {
+#ifdef DEBUG
+  if (reason != NULL) {
+    fprintf(stderr, "sending BYE (reason:%s)\n", reason);
+  } else {
+    fprintf(stderr, "sending BYE\n");
+  }
+#endif
+  // The packet must begin with a SR and/or RR report:
+  (void)addReport(True);
+
+  addBYE(reason);
+  sendBuiltPacket();
+}
+
+void RTCPInstance::sendBuiltPacket() {
+#ifdef DEBUG
+  fprintf(stderr, "sending RTCP packet\n");
+  unsigned char* p = fOutBuf->packet();
+  for (unsigned i = 0; i < fOutBuf->curPacketSize(); ++i) {
+    if (i%4 == 0) fprintf(stderr," ");
+    fprintf(stderr, "%02x", p[i]);
+  }
+  fprintf(stderr, "\n");
+#endif
+  unsigned reportSize = fOutBuf->curPacketSize();
+  if (fCrypto != NULL) { // Encrypt/tag the data before sending it:
+    unsigned newReportSize;
+    if (!fCrypto->processOutgoingSRTCPPacket(fOutBuf->packet(), reportSize, newReportSize)) return;
+    reportSize = newReportSize;
+  }
+  fRTCPInterface.sendPacket(fOutBuf->packet(), reportSize);
+  fOutBuf->resetOffset();
+
+  fLastSentSize = IP_UDP_HDR_SIZE + reportSize;
+  fHaveJustSentPacket = True;
+  fLastPacketSentSize = reportSize;
+}
+
+int RTCPInstance::checkNewSSRC() {
+  return fKnownMembers->noteMembership(fLastReceivedSSRC,
+				       fOutgoingReportCount);
+}
+
+void RTCPInstance::removeLastReceivedSSRC() {
+  removeSSRC(fLastReceivedSSRC, False/*keep stats around*/);
+}
+
+void RTCPInstance::removeSSRC(u_int32_t ssrc, Boolean alsoRemoveStats) {
+  fKnownMembers->remove(ssrc);
+
+  if (alsoRemoveStats) {
+    // Also, remove records of this SSRC from any reception or transmission stats
+    if (fSource != NULL) fSource->receptionStatsDB().removeRecord(ssrc);
+    if (fSink != NULL) fSink->transmissionStatsDB().removeRecord(ssrc);
+  }
+}
+
+void RTCPInstance::onExpire(RTCPInstance* instance) {
+  instance->onExpire1();
+}
+
+// Member functions to build specific kinds of report:
+
+Boolean RTCPInstance::addReport(Boolean alwaysAdd) {
+  // Include a SR or a RR, depending on whether we have an associated sink or source:
+  if (fSink != NULL) {
+    if (!alwaysAdd) {
+      if (!fSink->enableRTCPReports()) return False;
+
+      // Hack: Don't send a SR during those (brief) times when the timestamp of the
+      // next outgoing RTP packet has been preset, to ensure that that timestamp gets
+      // used for that outgoing packet. (David Bertrand, 2006.07.18)
+      if (fSink->nextTimestampHasBeenPreset()) return False;
+    }
+
+    addSR();
+  }
+  if (fSource != NULL) {
+    if (!alwaysAdd) {
+      if (!fSource->enableRTCPReports()) return False;
+    }
+
+    addRR();
+  }
+
+  return True;
+}
+
+void RTCPInstance::addSR() {
+  // ASSERT: fSink != NULL
+
+  enqueueCommonReportPrefix(RTCP_PT_SR, fSink->SSRC(),
+			    5 /* extra words in a SR */);
+
+  // Now, add the 'sender info' for our sink
+
+  // Insert the NTP and RTP timestamps for the 'wallclock time':
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+  fOutBuf->enqueueWord(timeNow.tv_sec + 0x83AA7E80);
+      // NTP timestamp most-significant word (1970 epoch -> 1900 epoch)
+  double fractionalPart = (timeNow.tv_usec/15625.0)*0x04000000; // 2^32/10^6
+  fOutBuf->enqueueWord((unsigned)(fractionalPart+0.5));
+      // NTP timestamp least-significant word
+  unsigned rtpTimestamp = fSink->convertToRTPTimestamp(timeNow);
+  fOutBuf->enqueueWord(rtpTimestamp); // RTP ts
+
+  // Insert the packet and byte counts:
+  fOutBuf->enqueueWord(fSink->packetCount());
+  fOutBuf->enqueueWord(fSink->octetCount());
+
+  enqueueCommonReportSuffix();
+}
+
+void RTCPInstance::addRR() {
+  // ASSERT: fSource != NULL
+
+  enqueueCommonReportPrefix(RTCP_PT_RR, fSource->SSRC());
+  enqueueCommonReportSuffix();
+}
+
+void RTCPInstance::enqueueCommonReportPrefix(unsigned char packetType,
+					     u_int32_t SSRC,
+					     unsigned numExtraWords) {
+  unsigned numReportingSources;
+  if (fSource == NULL) {
+    numReportingSources = 0; // we don't receive anything
+  } else {
+    RTPReceptionStatsDB& allReceptionStats
+      = fSource->receptionStatsDB();
+    numReportingSources = allReceptionStats.numActiveSourcesSinceLastReset();
+    // This must be <32, to fit in 5 bits:
+    if (numReportingSources >= 32) { numReportingSources = 32; }
+    // Later: support adding more reports to handle >32 sources (unlikely)#####
+  }
+
+  unsigned rtcpHdr = 0x80000000; // version 2, no padding
+  rtcpHdr |= (numReportingSources<<24);
+  rtcpHdr |= (packetType<<16);
+  rtcpHdr |= (1 + numExtraWords + 6*numReportingSources);
+      // each report block is 6 32-bit words long
+  fOutBuf->enqueueWord(rtcpHdr);
+
+  fOutBuf->enqueueWord(SSRC);
+}
+
+void RTCPInstance::enqueueCommonReportSuffix() {
+  // Output the report blocks for each source:
+  if (fSource != NULL) {
+    RTPReceptionStatsDB& allReceptionStats
+      = fSource->receptionStatsDB();
+
+    RTPReceptionStatsDB::Iterator iterator(allReceptionStats);
+    while (1) {
+      RTPReceptionStats* receptionStats = iterator.next();
+      if (receptionStats == NULL) break;
+      enqueueReportBlock(receptionStats);
+    }
+
+    allReceptionStats.reset(); // because we have just generated a report
+  }
+}
+
+void
+RTCPInstance::enqueueReportBlock(RTPReceptionStats* stats) {
+  fOutBuf->enqueueWord(stats->SSRC());
+
+  unsigned highestExtSeqNumReceived = stats->highestExtSeqNumReceived();
+
+  unsigned totNumExpected
+    = highestExtSeqNumReceived - stats->baseExtSeqNumReceived();
+  int totNumLost = totNumExpected - stats->totNumPacketsReceived();
+  // 'Clamp' this loss number to a 24-bit signed value:
+  if (totNumLost > 0x007FFFFF) {
+    totNumLost = 0x007FFFFF;
+  } else if (totNumLost < 0) {
+    if (totNumLost < -0x00800000) totNumLost = 0x00800000; // unlikely, but...
+    totNumLost &= 0x00FFFFFF;
+  }
+
+  unsigned numExpectedSinceLastReset
+    = highestExtSeqNumReceived - stats->lastResetExtSeqNumReceived();
+  int numLostSinceLastReset
+    = numExpectedSinceLastReset - stats->numPacketsReceivedSinceLastReset();
+  unsigned char lossFraction;
+  if (numExpectedSinceLastReset == 0 || numLostSinceLastReset < 0) {
+    lossFraction = 0;
+  } else {
+    lossFraction = (unsigned char)
+      ((numLostSinceLastReset << 8) / numExpectedSinceLastReset);
+  }
+
+  fOutBuf->enqueueWord((lossFraction<<24) | totNumLost);
+  fOutBuf->enqueueWord(highestExtSeqNumReceived);
+
+  fOutBuf->enqueueWord(stats->jitter());
+
+  unsigned NTPmsw = stats->lastReceivedSR_NTPmsw();
+  unsigned NTPlsw = stats->lastReceivedSR_NTPlsw();
+  unsigned LSR = ((NTPmsw&0xFFFF)<<16)|(NTPlsw>>16); // middle 32 bits
+  fOutBuf->enqueueWord(LSR);
+
+  // Figure out how long has elapsed since the last SR rcvd from this src:
+  struct timeval const& LSRtime = stats->lastReceivedSR_time(); // "last SR"
+  struct timeval timeNow, timeSinceLSR;
+  gettimeofday(&timeNow, NULL);
+  if (timeNow.tv_usec < LSRtime.tv_usec) {
+    timeNow.tv_usec += 1000000;
+    timeNow.tv_sec -= 1;
+  }
+  timeSinceLSR.tv_sec = timeNow.tv_sec - LSRtime.tv_sec;
+  timeSinceLSR.tv_usec = timeNow.tv_usec - LSRtime.tv_usec;
+  // The enqueued time is in units of 1/65536 seconds.
+  // (Note that 65536/1000000 == 1024/15625)
+  unsigned DLSR;
+  if (LSR == 0) {
+    DLSR = 0;
+  } else {
+    DLSR = (timeSinceLSR.tv_sec<<16)
+         | ( (((timeSinceLSR.tv_usec<<11)+15625)/31250) & 0xFFFF);
+  }
+  fOutBuf->enqueueWord(DLSR);
+}
+
+void RTCPInstance::addSDES() {
+  // For now we support only the CNAME item; later support more #####
+
+  // Begin by figuring out the size of the entire SDES report:
+  unsigned numBytes = 4;
+      // counts the SSRC, but not the header; it'll get subtracted out
+  numBytes += fCNAME.totalSize(); // includes id and length
+  numBytes += 1; // the special END item
+
+  unsigned num4ByteWords = (numBytes + 3)/4;
+
+  unsigned rtcpHdr = 0x81000000; // version 2, no padding, 1 SSRC chunk
+  rtcpHdr |= (RTCP_PT_SDES<<16);
+  rtcpHdr |= num4ByteWords;
+  fOutBuf->enqueueWord(rtcpHdr);
+
+  if (fSource != NULL) {
+    fOutBuf->enqueueWord(fSource->SSRC());
+  } else if (fSink != NULL) {
+    fOutBuf->enqueueWord(fSink->SSRC());
+  }
+
+  // Add the CNAME:
+  fOutBuf->enqueue(fCNAME.data(), fCNAME.totalSize());
+
+  // Add the 'END' item (i.e., a zero byte), plus any more needed to pad:
+  unsigned numPaddingBytesNeeded = 4 - (fOutBuf->curPacketSize() % 4);
+  unsigned char const zero = '\0';
+  while (numPaddingBytesNeeded-- > 0) fOutBuf->enqueue(&zero, 1);
+}
+
+void RTCPInstance::addBYE(char const* reason) {
+  u_int32_t rtcpHdr = 0x81000000; // version 2, no padding, 1 SSRC
+  rtcpHdr |= (RTCP_PT_BYE<<16);
+  u_int16_t num32BitWords = 2; // by default, two 32-bit words total (i.e., with 1 SSRC)
+  u_int8_t reasonLength8Bits = 0; // by default
+  if (reason != NULL) {
+    // We need to add more 32-bit words for the 'length+reason':
+    unsigned const reasonLength = strlen(reason);
+    reasonLength8Bits = reasonLength < 0xFF ? (u_int8_t)reasonLength : 0xFF;
+    unsigned numExtraWords = ((1/*reason length field*/+reasonLength8Bits)+3)/4;
+    
+    num32BitWords += numExtraWords;
+  }
+  rtcpHdr |= (num32BitWords-1); // length field
+  fOutBuf->enqueueWord(rtcpHdr);
+
+  if (fSource != NULL) {
+    fOutBuf->enqueueWord(fSource->SSRC());
+  } else if (fSink != NULL) {
+    fOutBuf->enqueueWord(fSink->SSRC());
+  }
+
+  num32BitWords -= 2; // ASSERT: num32BitWords >= 0
+  if (num32BitWords > 0) {
+    // Add a length+'reason for leaving':
+    // First word:
+    u_int32_t lengthPlusFirst3ReasonBytes = reasonLength8Bits<<24;
+    unsigned index = 0;
+    if (reasonLength8Bits > index) lengthPlusFirst3ReasonBytes |= ((u_int8_t)reason[index++])<<16;
+    if (reasonLength8Bits > index) lengthPlusFirst3ReasonBytes |= ((u_int8_t)reason[index++])<<8;
+    if (reasonLength8Bits > index) lengthPlusFirst3ReasonBytes |= (u_int8_t)reason[index++];
+    fOutBuf->enqueueWord(lengthPlusFirst3ReasonBytes);
+
+    // Any subsequent words:
+    if (reasonLength8Bits > 3) {
+      // ASSERT: num32BitWords > 1
+      while (--num32BitWords > 0) {
+	u_int32_t fourMoreReasonBytes = 0;
+	if (reasonLength8Bits > index) fourMoreReasonBytes |= ((u_int8_t)reason[index++])<<24;
+	if (reasonLength8Bits > index) fourMoreReasonBytes |= ((u_int8_t)reason[index++])<<16;
+	if (reasonLength8Bits > index) fourMoreReasonBytes |= ((u_int8_t)reason[index++])<<8;
+	if (reasonLength8Bits > index) fourMoreReasonBytes |= (u_int8_t)reason[index++];
+	fOutBuf->enqueueWord(fourMoreReasonBytes);
+      }
+    }
+  }
+}
+
+void RTCPInstance::schedule(double nextTime) {
+  fNextReportTime = nextTime;
+
+  double secondsToDelay = nextTime - dTimeNow();
+  if (secondsToDelay < 0) secondsToDelay = 0;
+#ifdef DEBUG
+  fprintf(stderr, "schedule(%f->%f)\n", secondsToDelay, nextTime);
+#endif
+  int64_t usToGo = (int64_t)(secondsToDelay * 1000000);
+  nextTask() = envir().taskScheduler().scheduleDelayedTask(usToGo,
+				(TaskFunc*)RTCPInstance::onExpire, this);
+}
+
+void RTCPInstance::reschedule(double nextTime) {
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+  schedule(nextTime);
+}
+
+void RTCPInstance::onExpire1() {
+  nextTask() = NULL;
+
+  // Note: fTotSessionBW is kbits per second
+  double rtcpBW = 0.05*fTotSessionBW*1024/8; // -> bytes per second
+
+  OnExpire(this, // event
+	   numMembers(), // members
+	   (fSink != NULL) ? 1 : 0, // senders
+	   rtcpBW, // rtcp_bw
+	   (fSink != NULL) ? 1 : 0, // we_sent
+	   &fAveRTCPSize, // ave_rtcp_size
+	   &fIsInitial, // initial
+	   dTimeNow(), // tc
+	   &fPrevReportTime, // tp
+	   &fPrevNumMembers // pmembers
+	   );
+}
+
+////////// SDESItem //////////
+
+SDESItem::SDESItem(unsigned char tag, unsigned char const* value) {
+  unsigned length = strlen((char const*)value);
+  if (length > 0xFF) length = 0xFF; // maximum data length for a SDES item
+
+  fData[0] = tag;
+  fData[1] = (unsigned char)length;
+  memmove(&fData[2], value, length);
+}
+
+unsigned SDESItem::totalSize() const {
+  return 2 + (unsigned)fData[1];
+}
+
+
+////////// Implementation of routines imported by the "rtcp_from_spec" C code
+
+extern "C" void Schedule(double nextTime, event e) {
+  RTCPInstance* instance = (RTCPInstance*)e;
+  if (instance == NULL) return;
+
+  instance->schedule(nextTime);
+}
+
+extern "C" void Reschedule(double nextTime, event e) {
+  RTCPInstance* instance = (RTCPInstance*)e;
+  if (instance == NULL) return;
+
+  instance->reschedule(nextTime);
+}
+
+extern "C" void SendRTCPReport(event e) {
+  RTCPInstance* instance = (RTCPInstance*)e;
+  if (instance == NULL) return;
+
+  instance->sendReport();
+}
+
+extern "C" void SendBYEPacket(event e) {
+  RTCPInstance* instance = (RTCPInstance*)e;
+  if (instance == NULL) return;
+
+  instance->sendBYE();
+}
+
+extern "C" int TypeOfEvent(event e) {
+  RTCPInstance* instance = (RTCPInstance*)e;
+  if (instance == NULL) return EVENT_UNKNOWN;
+
+  return instance->typeOfEvent();
+}
+
+extern "C" int SentPacketSize(event e) {
+  RTCPInstance* instance = (RTCPInstance*)e;
+  if (instance == NULL) return 0;
+
+  return instance->sentPacketSize();
+}
+
+extern "C" int PacketType(packet p) {
+  RTCPInstance* instance = (RTCPInstance*)p;
+  if (instance == NULL) return PACKET_UNKNOWN_TYPE;
+
+  return instance->packetType();
+}
+
+extern "C" int ReceivedPacketSize(packet p) {
+  RTCPInstance* instance = (RTCPInstance*)p;
+  if (instance == NULL) return 0;
+
+  return instance->receivedPacketSize();
+}
+
+extern "C" int NewMember(packet p) {
+  RTCPInstance* instance = (RTCPInstance*)p;
+  if (instance == NULL) return 0;
+
+  return instance->checkNewSSRC();
+}
+
+extern "C" int NewSender(packet /*p*/) {
+  return 0; // we don't yet recognize senders other than ourselves #####
+}
+
+extern "C" void AddMember(packet /*p*/) {
+  // Do nothing; all of the real work was done when NewMember() was called
+}
+
+extern "C" void AddSender(packet /*p*/) {
+  // we don't yet recognize senders other than ourselves #####
+}
+
+extern "C" void RemoveMember(packet p) {
+  RTCPInstance* instance = (RTCPInstance*)p;
+  if (instance == NULL) return;
+
+  instance->removeLastReceivedSSRC();
+}
+
+extern "C" void RemoveSender(packet /*p*/) {
+  // we don't yet recognize senders other than ourselves #####
+}
+
+extern "C" double drand30() {
+  unsigned tmp = our_random()&0x3FFFFFFF; // a random 30-bit integer
+  return tmp/(double)(1024*1024*1024);
+}
diff --git a/liveMedia/RTPInterface.cpp b/liveMedia/RTPInterface.cpp
new file mode 100644
index 0000000..78b37d4
--- /dev/null
+++ b/liveMedia/RTPInterface.cpp
@@ -0,0 +1,632 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// An abstraction of a network interface used for RTP (or RTCP).
+// (This allows the RTP-over-TCP hack (RFC 2326, section 10.12) to
+// be implemented transparently.)
+// Implementation
+
+#include "RTPInterface.hh"
+#include <GroupsockHelper.hh>
+#include <stdio.h>
+
+////////// Helper Functions - Definition //////////
+
+// Helper routines and data structures, used to implement
+// sending/receiving RTP/RTCP over a TCP socket:
+
+class tcpStreamRecord {
+  public:
+  tcpStreamRecord(int streamSocketNum, unsigned char streamChannelId,
+                  tcpStreamRecord* next);
+  virtual ~tcpStreamRecord();
+
+public:
+  tcpStreamRecord* fNext;
+  int fStreamSocketNum;
+  unsigned char fStreamChannelId;
+};
+
+// Reading RTP-over-TCP is implemented using two levels of hash tables.
+// The top-level hash table maps TCP socket numbers to a
+// "SocketDescriptor" that contains a hash table for each of the
+// sub-channels that are reading from this socket.
+
+static HashTable* socketHashTable(UsageEnvironment& env, Boolean createIfNotPresent = True) {
+  _Tables* ourTables = _Tables::getOurTables(env, createIfNotPresent);
+  if (ourTables == NULL) return NULL;
+
+  if (ourTables->socketTable == NULL) {
+    // Create a new socket number -> SocketDescriptor mapping table:
+    ourTables->socketTable = HashTable::create(ONE_WORD_HASH_KEYS);
+  }
+  return (HashTable*)(ourTables->socketTable);
+}
+
+class SocketDescriptor {
+public:
+  SocketDescriptor(UsageEnvironment& env, int socketNum);
+  virtual ~SocketDescriptor();
+
+  void registerRTPInterface(unsigned char streamChannelId,
+			    RTPInterface* rtpInterface);
+  RTPInterface* lookupRTPInterface(unsigned char streamChannelId);
+  void deregisterRTPInterface(unsigned char streamChannelId);
+
+  void setServerRequestAlternativeByteHandler(ServerRequestAlternativeByteHandler* handler, void* clientData) {
+    fServerRequestAlternativeByteHandler = handler;
+    fServerRequestAlternativeByteHandlerClientData = clientData;
+  }
+
+private:
+  static void tcpReadHandler(SocketDescriptor*, int mask);
+  Boolean tcpReadHandler1(int mask);
+
+private:
+  UsageEnvironment& fEnv;
+  int fOurSocketNum;
+  HashTable* fSubChannelHashTable;
+  ServerRequestAlternativeByteHandler* fServerRequestAlternativeByteHandler;
+  void* fServerRequestAlternativeByteHandlerClientData;
+  u_int8_t fStreamChannelId, fSizeByte1;
+  Boolean fReadErrorOccurred, fDeleteMyselfNext, fAreInReadHandlerLoop;
+  enum { AWAITING_DOLLAR, AWAITING_STREAM_CHANNEL_ID, AWAITING_SIZE1, AWAITING_SIZE2, AWAITING_PACKET_DATA } fTCPReadingState;
+};
+
+static SocketDescriptor* lookupSocketDescriptor(UsageEnvironment& env, int sockNum, Boolean createIfNotFound = True) {
+  HashTable* table = socketHashTable(env, createIfNotFound);
+  if (table == NULL) return NULL;
+
+  char const* key = (char const*)(long)sockNum;
+  SocketDescriptor* socketDescriptor = (SocketDescriptor*)(table->Lookup(key));
+  if (socketDescriptor == NULL) {
+    if (createIfNotFound) {
+      socketDescriptor = new SocketDescriptor(env, sockNum);
+      table->Add((char const*)(long)(sockNum), socketDescriptor);
+    } else if (table->IsEmpty()) {
+      // We can also delete the table (to reclaim space):
+      _Tables* ourTables = _Tables::getOurTables(env);
+      delete table;
+      ourTables->socketTable = NULL;
+      ourTables->reclaimIfPossible();
+    }
+  }
+
+  return socketDescriptor;
+}
+
+static void removeSocketDescription(UsageEnvironment& env, int sockNum) {
+  char const* key = (char const*)(long)sockNum;
+  HashTable* table = socketHashTable(env);
+  table->Remove(key);
+
+  if (table->IsEmpty()) {
+    // We can also delete the table (to reclaim space):
+    _Tables* ourTables = _Tables::getOurTables(env);
+    delete table;
+    ourTables->socketTable = NULL;
+    ourTables->reclaimIfPossible();
+  }
+}
+
+
+////////// RTPInterface - Implementation //////////
+
+RTPInterface::RTPInterface(Medium* owner, Groupsock* gs)
+  : fOwner(owner), fGS(gs),
+    fTCPStreams(NULL),
+    fNextTCPReadSize(0), fNextTCPReadStreamSocketNum(-1),
+    fNextTCPReadStreamChannelId(0xFF), fReadHandlerProc(NULL),
+    fAuxReadHandlerFunc(NULL), fAuxReadHandlerClientData(NULL) {
+  // Make the socket non-blocking, even though it will be read from only asynchronously, when packets arrive.
+  // The reason for this is that, in some OSs, reads on a blocking socket can (allegedly) sometimes block,
+  // even if the socket was previously reported (e.g., by "select()") as having data available.
+  // (This can supposedly happen if the UDP checksum fails, for example.)
+  makeSocketNonBlocking(fGS->socketNum());
+  increaseSendBufferTo(envir(), fGS->socketNum(), 50*1024);
+}
+
+RTPInterface::~RTPInterface() {
+  stopNetworkReading();
+  delete fTCPStreams;
+}
+
+void RTPInterface::setStreamSocket(int sockNum,
+				   unsigned char streamChannelId) {
+  fGS->removeAllDestinations();
+  envir().taskScheduler().disableBackgroundHandling(fGS->socketNum()); // turn off any reading on our datagram socket
+  fGS->reset(); // and close our datagram socket, because we won't be using it anymore
+
+  addStreamSocket(sockNum, streamChannelId);
+}
+
+void RTPInterface::addStreamSocket(int sockNum,
+				   unsigned char streamChannelId) {
+  if (sockNum < 0) return;
+
+  for (tcpStreamRecord* streams = fTCPStreams; streams != NULL;
+       streams = streams->fNext) {
+    if (streams->fStreamSocketNum == sockNum
+	&& streams->fStreamChannelId == streamChannelId) {
+      return; // we already have it
+    }
+  }
+
+  fTCPStreams = new tcpStreamRecord(sockNum, streamChannelId, fTCPStreams);
+
+  // Also, make sure this new socket is set up for receiving RTP/RTCP-over-TCP:
+  SocketDescriptor* socketDescriptor = lookupSocketDescriptor(envir(), sockNum);
+  socketDescriptor->registerRTPInterface(streamChannelId, this);
+}
+
+static void deregisterSocket(UsageEnvironment& env, int sockNum, unsigned char streamChannelId) {
+  SocketDescriptor* socketDescriptor = lookupSocketDescriptor(env, sockNum, False);
+  if (socketDescriptor != NULL) {
+    socketDescriptor->deregisterRTPInterface(streamChannelId);
+        // Note: This may delete "socketDescriptor",
+        // if no more interfaces are using this socket
+  }
+}
+
+void RTPInterface::removeStreamSocket(int sockNum,
+				      unsigned char streamChannelId) {
+  // Remove - from our list of 'TCP streams' - the record of the (sockNum,streamChannelId) pair.
+  // (However "streamChannelId" == 0xFF is a special case, meaning remove all
+  //  (sockNum,*) pairs.)
+  
+  while (1) {
+    tcpStreamRecord** streamsPtr = &fTCPStreams;
+
+    while (*streamsPtr != NULL) {
+      if ((*streamsPtr)->fStreamSocketNum == sockNum
+	  && (streamChannelId == 0xFF || streamChannelId == (*streamsPtr)->fStreamChannelId)) {
+	// Delete the record pointed to by *streamsPtr :
+	unsigned char streamChannelIdToRemove = (*streamsPtr)->fStreamChannelId;
+	tcpStreamRecord* next = (*streamsPtr)->fNext;
+	(*streamsPtr)->fNext = NULL;
+	delete (*streamsPtr);
+	*streamsPtr = next;
+
+	// And 'deregister' this socket,channelId pair:
+	deregisterSocket(envir(), sockNum, streamChannelIdToRemove);
+
+	if (streamChannelId != 0xFF) return; // we're done
+	break; // start again from the beginning of the list, in case the list has changed
+      } else {
+	streamsPtr = &((*streamsPtr)->fNext);
+      }
+    }
+    if (*streamsPtr == NULL) break;
+  }
+}
+
+void RTPInterface::setServerRequestAlternativeByteHandler(UsageEnvironment& env, int socketNum,
+							  ServerRequestAlternativeByteHandler* handler, void* clientData) {
+  SocketDescriptor* socketDescriptor = lookupSocketDescriptor(env, socketNum, False);
+
+  if (socketDescriptor != NULL) socketDescriptor->setServerRequestAlternativeByteHandler(handler, clientData);
+}
+
+void RTPInterface::clearServerRequestAlternativeByteHandler(UsageEnvironment& env, int socketNum) {
+  setServerRequestAlternativeByteHandler(env, socketNum, NULL, NULL);
+}
+
+Boolean RTPInterface::sendPacket(unsigned char* packet, unsigned packetSize) {
+  Boolean success = True; // we'll return False instead if any of the sends fail
+
+  // Normal case: Send as a UDP packet:
+  if (!fGS->output(envir(), packet, packetSize)) success = False;
+
+  // Also, send over each of our TCP sockets:
+  tcpStreamRecord* nextStream;
+  for (tcpStreamRecord* stream = fTCPStreams; stream != NULL; stream = nextStream) {
+    nextStream = stream->fNext; // Set this now, in case the following deletes "stream":
+    if (!sendRTPorRTCPPacketOverTCP(packet, packetSize,
+				    stream->fStreamSocketNum, stream->fStreamChannelId)) {
+      success = False;
+    }
+  }
+
+  return success;
+}
+
+void RTPInterface
+::startNetworkReading(TaskScheduler::BackgroundHandlerProc* handlerProc) {
+  // Normal case: Arrange to read UDP packets:
+  envir().taskScheduler().
+    turnOnBackgroundReadHandling(fGS->socketNum(), handlerProc, fOwner);
+
+  // Also, receive RTP over TCP, on each of our TCP connections:
+  fReadHandlerProc = handlerProc;
+  for (tcpStreamRecord* streams = fTCPStreams; streams != NULL;
+       streams = streams->fNext) {
+    // Get a socket descriptor for "streams->fStreamSocketNum":
+    SocketDescriptor* socketDescriptor = lookupSocketDescriptor(envir(), streams->fStreamSocketNum);
+
+    // Tell it about our subChannel:
+    socketDescriptor->registerRTPInterface(streams->fStreamChannelId, this);
+  }
+}
+
+Boolean RTPInterface::handleRead(unsigned char* buffer, unsigned bufferMaxSize,
+				 unsigned& bytesRead, struct sockaddr_in& fromAddress,
+				 int& tcpSocketNum, unsigned char& tcpStreamChannelId,
+				 Boolean& packetReadWasIncomplete) {
+  packetReadWasIncomplete = False; // by default
+  Boolean readSuccess;
+  if (fNextTCPReadStreamSocketNum < 0) {
+    // Normal case: read from the (datagram) 'groupsock':
+    tcpSocketNum = -1;
+    readSuccess = fGS->handleRead(buffer, bufferMaxSize, bytesRead, fromAddress);
+  } else {
+    // Read from the TCP connection:
+    tcpSocketNum = fNextTCPReadStreamSocketNum;
+    tcpStreamChannelId = fNextTCPReadStreamChannelId;
+
+    bytesRead = 0;
+    unsigned totBytesToRead = fNextTCPReadSize;
+    if (totBytesToRead > bufferMaxSize) totBytesToRead = bufferMaxSize;
+    unsigned curBytesToRead = totBytesToRead;
+    int curBytesRead;
+    while ((curBytesRead = readSocket(envir(), fNextTCPReadStreamSocketNum,
+				      &buffer[bytesRead], curBytesToRead,
+				      fromAddress)) > 0) {
+      bytesRead += curBytesRead;
+      if (bytesRead >= totBytesToRead) break;
+      curBytesToRead -= curBytesRead;
+    }
+    fNextTCPReadSize -= bytesRead;
+    if (fNextTCPReadSize == 0) {
+      // We've read all of the data that we asked for
+      readSuccess = True;
+    } else if (curBytesRead < 0) {
+      // There was an error reading the socket
+      bytesRead = 0;
+      readSuccess = False;
+    } else {
+      // We need to read more bytes, and there was not an error reading the socket
+      packetReadWasIncomplete = True;
+      return True;
+    }
+    fNextTCPReadStreamSocketNum = -1; // default, for next time
+  }
+
+  if (readSuccess && fAuxReadHandlerFunc != NULL) {
+    // Also pass the newly-read packet data to our auxilliary handler:
+    (*fAuxReadHandlerFunc)(fAuxReadHandlerClientData, buffer, bytesRead);
+  }
+  return readSuccess;
+}
+
+void RTPInterface::stopNetworkReading() {
+  // Normal case
+  if (fGS != NULL) envir().taskScheduler().turnOffBackgroundReadHandling(fGS->socketNum());
+
+  // Also turn off read handling on each of our TCP connections:
+  for (tcpStreamRecord* streams = fTCPStreams; streams != NULL; streams = streams->fNext) {
+    deregisterSocket(envir(), streams->fStreamSocketNum, streams->fStreamChannelId);
+  }
+}
+
+
+////////// Helper Functions - Implementation /////////
+
+Boolean RTPInterface::sendRTPorRTCPPacketOverTCP(u_int8_t* packet, unsigned packetSize,
+						 int socketNum, unsigned char streamChannelId) {
+#ifdef DEBUG_SEND
+  fprintf(stderr, "sendRTPorRTCPPacketOverTCP: %d bytes over channel %d (socket %d)\n",
+	  packetSize, streamChannelId, socketNum); fflush(stderr);
+#endif
+  // Send a RTP/RTCP packet over TCP, using the encoding defined in RFC 2326, section 10.12:
+  //     $<streamChannelId><packetSize><packet>
+  // (If the initial "send()" of '$<streamChannelId><packetSize>' succeeds, then we force
+  // the subsequent "send()" for the <packet> data to succeed, even if we have to do so with
+  // a blocking "send()".)
+  do {
+    u_int8_t framingHeader[4];
+    framingHeader[0] = '$';
+    framingHeader[1] = streamChannelId;
+    framingHeader[2] = (u_int8_t) ((packetSize&0xFF00)>>8);
+    framingHeader[3] = (u_int8_t) (packetSize&0xFF);
+    if (!sendDataOverTCP(socketNum, framingHeader, 4, False)) break;
+
+    if (!sendDataOverTCP(socketNum, packet, packetSize, True)) break;
+#ifdef DEBUG_SEND
+    fprintf(stderr, "sendRTPorRTCPPacketOverTCP: completed\n"); fflush(stderr);
+#endif
+
+    return True;
+  } while (0);
+
+#ifdef DEBUG_SEND
+  fprintf(stderr, "sendRTPorRTCPPacketOverTCP: failed! (errno %d)\n", envir().getErrno()); fflush(stderr);
+#endif
+  return False;
+}
+
+#ifndef RTPINTERFACE_BLOCKING_WRITE_TIMEOUT_MS
+#define RTPINTERFACE_BLOCKING_WRITE_TIMEOUT_MS 500
+#endif
+
+Boolean RTPInterface::sendDataOverTCP(int socketNum, u_int8_t const* data, unsigned dataSize, Boolean forceSendToSucceed) {
+  int sendResult = send(socketNum, (char const*)data, dataSize, 0/*flags*/);
+  if (sendResult < (int)dataSize) {
+    // The TCP send() failed - at least partially.
+
+    unsigned numBytesSentSoFar = sendResult < 0 ? 0 : (unsigned)sendResult;
+    if (numBytesSentSoFar > 0 || (forceSendToSucceed && envir().getErrno() == EAGAIN)) {
+      // The OS's TCP send buffer has filled up (because the stream's bitrate has exceeded
+      // the capacity of the TCP connection!).
+      // Force this data write to succeed, by blocking if necessary until it does:
+      unsigned numBytesRemainingToSend = dataSize - numBytesSentSoFar;
+#ifdef DEBUG_SEND
+      fprintf(stderr, "sendDataOverTCP: resending %d-byte send (blocking)\n", numBytesRemainingToSend); fflush(stderr);
+#endif
+      makeSocketBlocking(socketNum, RTPINTERFACE_BLOCKING_WRITE_TIMEOUT_MS);
+      sendResult = send(socketNum, (char const*)(&data[numBytesSentSoFar]), numBytesRemainingToSend, 0/*flags*/);
+      if ((unsigned)sendResult != numBytesRemainingToSend) {
+	// The blocking "send()" failed, or timed out.  In either case, we assume that the
+	// TCP connection has failed (or is 'hanging' indefinitely), and we stop using it
+	// (for both RTP and RTP).
+	// (If we kept using the socket here, the RTP or RTCP packet write would be in an
+	//  incomplete, inconsistent state.)
+#ifdef DEBUG_SEND
+	fprintf(stderr, "sendDataOverTCP: blocking send() failed (delivering %d bytes out of %d); closing socket %d\n", sendResult, numBytesRemainingToSend, socketNum); fflush(stderr);
+#endif
+	removeStreamSocket(socketNum, 0xFF);
+	return False;
+      }
+      makeSocketNonBlocking(socketNum);
+
+      return True;
+    } else if (sendResult < 0 && envir().getErrno() != EAGAIN) {
+      // Because the "send()" call failed, assume that the socket is now unusable, so stop
+      // using it (for both RTP and RTCP):
+      removeStreamSocket(socketNum, 0xFF);
+    }
+
+    return False;
+  }
+
+  return True;
+}
+
+SocketDescriptor::SocketDescriptor(UsageEnvironment& env, int socketNum)
+  :fEnv(env), fOurSocketNum(socketNum),
+    fSubChannelHashTable(HashTable::create(ONE_WORD_HASH_KEYS)),
+   fServerRequestAlternativeByteHandler(NULL), fServerRequestAlternativeByteHandlerClientData(NULL),
+   fReadErrorOccurred(False), fDeleteMyselfNext(False), fAreInReadHandlerLoop(False), fTCPReadingState(AWAITING_DOLLAR) {
+}
+
+SocketDescriptor::~SocketDescriptor() {
+  fEnv.taskScheduler().turnOffBackgroundReadHandling(fOurSocketNum);
+  removeSocketDescription(fEnv, fOurSocketNum);
+
+  if (fSubChannelHashTable != NULL) {
+    // Remove knowledge of this socket from any "RTPInterface"s that are using it:
+    HashTable::Iterator* iter = HashTable::Iterator::create(*fSubChannelHashTable);
+    RTPInterface* rtpInterface;
+    char const* key;
+
+    while ((rtpInterface = (RTPInterface*)(iter->next(key))) != NULL) {
+      u_int64_t streamChannelIdLong = (u_int64_t)key;
+      unsigned char streamChannelId = (unsigned char)streamChannelIdLong;
+
+      rtpInterface->removeStreamSocket(fOurSocketNum, streamChannelId);
+    }
+    delete iter;
+
+    // Then remove the hash table entries themselves, and then remove the hash table:
+    while (fSubChannelHashTable->RemoveNext() != NULL) {}
+    delete fSubChannelHashTable;
+  }
+
+  // Finally:
+  if (fServerRequestAlternativeByteHandler != NULL) {
+    // Hack: Pass a special character to our alternative byte handler, to tell it that either
+    // - an error occurred when reading the TCP socket, or
+    // - no error occurred, but it needs to take over control of the TCP socket once again.
+    u_int8_t specialChar = fReadErrorOccurred ? 0xFF : 0xFE;
+    (*fServerRequestAlternativeByteHandler)(fServerRequestAlternativeByteHandlerClientData, specialChar);
+  }
+}
+
+void SocketDescriptor::registerRTPInterface(unsigned char streamChannelId,
+					    RTPInterface* rtpInterface) {
+  Boolean isFirstRegistration = fSubChannelHashTable->IsEmpty();
+#if defined(DEBUG_SEND)||defined(DEBUG_RECEIVE)
+  fprintf(stderr, "SocketDescriptor(socket %d)::registerRTPInterface(channel %d): isFirstRegistration %d\n", fOurSocketNum, streamChannelId, isFirstRegistration);
+#endif
+  fSubChannelHashTable->Add((char const*)(long)streamChannelId,
+			    rtpInterface);
+
+  if (isFirstRegistration) {
+    // Arrange to handle reads on this TCP socket:
+    TaskScheduler::BackgroundHandlerProc* handler
+      = (TaskScheduler::BackgroundHandlerProc*)&tcpReadHandler;
+    fEnv.taskScheduler().
+      setBackgroundHandling(fOurSocketNum, SOCKET_READABLE|SOCKET_EXCEPTION, handler, this);
+  }
+}
+
+RTPInterface* SocketDescriptor
+::lookupRTPInterface(unsigned char streamChannelId) {
+  char const* lookupArg = (char const*)(long)streamChannelId;
+  return (RTPInterface*)(fSubChannelHashTable->Lookup(lookupArg));
+}
+
+void SocketDescriptor
+::deregisterRTPInterface(unsigned char streamChannelId) {
+#if defined(DEBUG_SEND)||defined(DEBUG_RECEIVE)
+  fprintf(stderr, "SocketDescriptor(socket %d)::deregisterRTPInterface(channel %d)\n", fOurSocketNum, streamChannelId);
+#endif
+  fSubChannelHashTable->Remove((char const*)(long)streamChannelId);
+
+  if (fSubChannelHashTable->IsEmpty()) {
+    // No more interfaces are using us, so it's curtains for us now:
+    if (fAreInReadHandlerLoop) {
+      fDeleteMyselfNext = True; // we can't delete ourself yet, but we'll do so from "tcpReadHandler()" below
+    } else {
+      delete this;
+    }
+  }
+}
+
+void SocketDescriptor::tcpReadHandler(SocketDescriptor* socketDescriptor, int mask) {
+  // Call the read handler until it returns false, with a limit to avoid starving other sockets
+  unsigned count = 2000;
+  socketDescriptor->fAreInReadHandlerLoop = True;
+  while (!socketDescriptor->fDeleteMyselfNext && socketDescriptor->tcpReadHandler1(mask) && --count > 0) {}
+  socketDescriptor->fAreInReadHandlerLoop = False;
+  if (socketDescriptor->fDeleteMyselfNext) delete socketDescriptor;
+}
+
+Boolean SocketDescriptor::tcpReadHandler1(int mask) {
+  // We expect the following data over the TCP channel:
+  //   optional RTSP command or response bytes (before the first '$' character)
+  //   a '$' character
+  //   a 1-byte channel id
+  //   a 2-byte packet size (in network byte order)
+  //   the packet data.
+  // However, because the socket is being read asynchronously, this data might arrive in pieces.
+  
+  u_int8_t c;
+  struct sockaddr_in fromAddress;
+  if (fTCPReadingState != AWAITING_PACKET_DATA) {
+    int result = readSocket(fEnv, fOurSocketNum, &c, 1, fromAddress);
+    if (result == 0) { // There was no more data to read
+      return False;
+    } else if (result != 1) { // error reading TCP socket, so we will no longer handle it
+#ifdef DEBUG_RECEIVE
+      fprintf(stderr, "SocketDescriptor(socket %d)::tcpReadHandler(): readSocket(1 byte) returned %d (error)\n", fOurSocketNum, result);
+#endif
+      fReadErrorOccurred = True;
+      fDeleteMyselfNext = True;
+      return False;
+    }
+  }
+
+  Boolean callAgain = True;
+  switch (fTCPReadingState) {
+    case AWAITING_DOLLAR: {
+      if (c == '$') {
+#ifdef DEBUG_RECEIVE
+	fprintf(stderr, "SocketDescriptor(socket %d)::tcpReadHandler(): Saw '$'\n", fOurSocketNum);
+#endif
+	fTCPReadingState = AWAITING_STREAM_CHANNEL_ID;
+      } else {
+	// This character is part of a RTSP request or command, which is handled separately:
+	if (fServerRequestAlternativeByteHandler != NULL && c != 0xFF && c != 0xFE) {
+	  // Hack: 0xFF and 0xFE are used as special signaling characters, so don't send them
+	  (*fServerRequestAlternativeByteHandler)(fServerRequestAlternativeByteHandlerClientData, c);
+	}
+      }
+      break;
+    }
+    case AWAITING_STREAM_CHANNEL_ID: {
+      // The byte that we read is the stream channel id.
+      if (lookupRTPInterface(c) != NULL) { // sanity check
+	fStreamChannelId = c;
+	fTCPReadingState = AWAITING_SIZE1;
+      } else {
+	// This wasn't a stream channel id that we expected.  We're (somehow) in a strange state.  Try to recover:
+#ifdef DEBUG_RECEIVE
+	fprintf(stderr, "SocketDescriptor(socket %d)::tcpReadHandler(): Saw nonexistent stream channel id: 0x%02x\n", fOurSocketNum, c);
+#endif
+	fTCPReadingState = AWAITING_DOLLAR;
+      }
+      break;
+    }
+    case AWAITING_SIZE1: {
+      // The byte that we read is the first (high) byte of the 16-bit RTP or RTCP packet 'size'.
+      fSizeByte1 = c;
+      fTCPReadingState = AWAITING_SIZE2;
+      break;
+    }
+    case AWAITING_SIZE2: {
+      // The byte that we read is the second (low) byte of the 16-bit RTP or RTCP packet 'size'.
+      unsigned short size = (fSizeByte1<<8)|c;
+      
+      // Record the information about the packet data that will be read next:
+      RTPInterface* rtpInterface = lookupRTPInterface(fStreamChannelId);
+      if (rtpInterface != NULL) {
+	rtpInterface->fNextTCPReadSize = size;
+	rtpInterface->fNextTCPReadStreamSocketNum = fOurSocketNum;
+	rtpInterface->fNextTCPReadStreamChannelId = fStreamChannelId;
+      }
+      fTCPReadingState = AWAITING_PACKET_DATA;
+      break;
+    }
+    case AWAITING_PACKET_DATA: {
+      callAgain = False;
+      fTCPReadingState = AWAITING_DOLLAR; // the next state, unless we end up having to read more data in the current state
+      // Call the appropriate read handler to get the packet data from the TCP stream:
+      RTPInterface* rtpInterface = lookupRTPInterface(fStreamChannelId);
+      if (rtpInterface != NULL) {
+	if (rtpInterface->fNextTCPReadSize == 0) {
+	  // We've already read all the data for this packet.
+	  break;
+	}
+	if (rtpInterface->fReadHandlerProc != NULL) {
+#ifdef DEBUG_RECEIVE
+	  fprintf(stderr, "SocketDescriptor(socket %d)::tcpReadHandler(): reading %d bytes on channel %d\n", fOurSocketNum, rtpInterface->fNextTCPReadSize, rtpInterface->fNextTCPReadStreamChannelId);
+#endif
+	  fTCPReadingState = AWAITING_PACKET_DATA;
+	  rtpInterface->fReadHandlerProc(rtpInterface->fOwner, mask);
+	} else {
+#ifdef DEBUG_RECEIVE
+	  fprintf(stderr, "SocketDescriptor(socket %d)::tcpReadHandler(): No handler proc for \"rtpInterface\" for channel %d; need to skip %d remaining bytes\n", fOurSocketNum, fStreamChannelId, rtpInterface->fNextTCPReadSize);
+#endif
+	  int result = readSocket(fEnv, fOurSocketNum, &c, 1, fromAddress);
+	  if (result < 0) { // error reading TCP socket, so we will no longer handle it
+#ifdef DEBUG_RECEIVE
+	    fprintf(stderr, "SocketDescriptor(socket %d)::tcpReadHandler(): readSocket(1 byte) returned %d (error)\n", fOurSocketNum, result);
+#endif
+	    fReadErrorOccurred = True;
+	    fDeleteMyselfNext = True;
+	    return False;
+	  } else {
+	    fTCPReadingState = AWAITING_PACKET_DATA;
+	    if (result == 1) {
+	      --rtpInterface->fNextTCPReadSize;
+	      callAgain = True;
+	    }
+	  }
+	}
+      }
+#ifdef DEBUG_RECEIVE
+      else fprintf(stderr, "SocketDescriptor(socket %d)::tcpReadHandler(): No \"rtpInterface\" for channel %d\n", fOurSocketNum, fStreamChannelId);
+#endif
+    }
+  }
+
+  return callAgain;
+}
+
+
+////////// tcpStreamRecord implementation //////////
+
+tcpStreamRecord
+::tcpStreamRecord(int streamSocketNum, unsigned char streamChannelId,
+		  tcpStreamRecord* next)
+  : fNext(next),
+    fStreamSocketNum(streamSocketNum), fStreamChannelId(streamChannelId) {
+}
+
+tcpStreamRecord::~tcpStreamRecord() {
+  delete fNext;
+}
diff --git a/liveMedia/RTPSink.cpp b/liveMedia/RTPSink.cpp
new file mode 100644
index 0000000..dd288f2
--- /dev/null
+++ b/liveMedia/RTPSink.cpp
@@ -0,0 +1,358 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP Sinks
+// Implementation
+
+#include "RTPSink.hh"
+#include "GroupsockHelper.hh"
+
+////////// RTPSink //////////
+
+Boolean RTPSink::lookupByName(UsageEnvironment& env, char const* sinkName,
+				RTPSink*& resultSink) {
+  resultSink = NULL; // unless we succeed
+
+  MediaSink* sink;
+  if (!MediaSink::lookupByName(env, sinkName, sink)) return False;
+
+  if (!sink->isRTPSink()) {
+    env.setResultMsg(sinkName, " is not a RTP sink");
+    return False;
+  }
+
+  resultSink = (RTPSink*)sink;
+  return True;
+}
+
+Boolean RTPSink::isRTPSink() const {
+  return True;
+}
+
+RTPSink::RTPSink(UsageEnvironment& env,
+		 Groupsock* rtpGS, unsigned char rtpPayloadType,
+		 unsigned rtpTimestampFrequency,
+		 char const* rtpPayloadFormatName,
+		 unsigned numChannels)
+  : MediaSink(env), fRTPInterface(this, rtpGS),
+    fRTPPayloadType(rtpPayloadType),
+    fPacketCount(0), fOctetCount(0), fTotalOctetCount(0),
+    fTimestampFrequency(rtpTimestampFrequency), fNextTimestampHasBeenPreset(False), fEnableRTCPReports(True),
+    fNumChannels(numChannels), fEstimatedBitrate(0) {
+  fRTPPayloadFormatName
+    = strDup(rtpPayloadFormatName == NULL ? "???" : rtpPayloadFormatName);
+  gettimeofday(&fCreationTime, NULL);
+  fTotalOctetCountStartTime = fCreationTime;
+  resetPresentationTimes();
+
+  fSeqNo = (u_int16_t)our_random();
+  fSSRC = our_random32();
+  fTimestampBase = our_random32();
+
+  fTransmissionStatsDB = new RTPTransmissionStatsDB(*this);
+}
+
+RTPSink::~RTPSink() {
+  delete fTransmissionStatsDB;
+  delete[] (char*)fRTPPayloadFormatName;
+  fRTPInterface.forgetOurGroupsock();
+    // so that the "fRTPInterface" destructor doesn't turn off background read handling (in case
+    // its 'groupsock' is being shared with something else that does background read handling).
+}
+
+u_int32_t RTPSink::convertToRTPTimestamp(struct timeval tv) {
+  // Begin by converting from "struct timeval" units to RTP timestamp units:
+  u_int32_t timestampIncrement = (fTimestampFrequency*tv.tv_sec);
+  timestampIncrement += (u_int32_t)(fTimestampFrequency*(tv.tv_usec/1000000.0) + 0.5); // note: rounding
+
+  // Then add this to our 'timestamp base':
+  if (fNextTimestampHasBeenPreset) {
+    // Make the returned timestamp the same as the current "fTimestampBase",
+    // so that timestamps begin with the value that was previously preset:
+    fTimestampBase -= timestampIncrement;
+    fNextTimestampHasBeenPreset = False;
+  }
+
+  u_int32_t const rtpTimestamp = fTimestampBase + timestampIncrement;
+#ifdef DEBUG_TIMESTAMPS
+  fprintf(stderr, "fTimestampBase: 0x%08x, tv: %lu.%06ld\n\t=> RTP timestamp: 0x%08x\n",
+	  fTimestampBase, tv.tv_sec, tv.tv_usec, rtpTimestamp);
+  fflush(stderr);
+#endif
+
+  return rtpTimestamp;
+}
+
+u_int32_t RTPSink::presetNextTimestamp() {
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+
+  u_int32_t tsNow = convertToRTPTimestamp(timeNow);
+  if (!groupsockBeingUsed().hasMultipleDestinations()) {
+    // Don't adjust the timestamp stream if we already have another destination ongoing
+    fTimestampBase = tsNow;
+    fNextTimestampHasBeenPreset = True;
+  }
+
+  return tsNow;
+}
+
+void RTPSink::getTotalBitrate(unsigned& outNumBytes, double& outElapsedTime) {
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+
+  outNumBytes = fTotalOctetCount;
+  outElapsedTime = (double)(timeNow.tv_sec-fTotalOctetCountStartTime.tv_sec)
+    + (timeNow.tv_usec-fTotalOctetCountStartTime.tv_usec)/1000000.0;
+
+  fTotalOctetCount = 0;
+  fTotalOctetCountStartTime = timeNow;
+}
+
+void RTPSink::resetPresentationTimes() {
+  fInitialPresentationTime.tv_sec = fMostRecentPresentationTime.tv_sec = 0;
+  fInitialPresentationTime.tv_usec = fMostRecentPresentationTime.tv_usec = 0;
+}
+
+char const* RTPSink::sdpMediaType() const {
+  return "data";
+  // default SDP media (m=) type, unless redefined by subclasses
+}
+
+char* RTPSink::rtpmapLine() const {
+  if (rtpPayloadType() >= 96) { // the payload format type is dynamic
+    char* encodingParamsPart;
+    if (numChannels() != 1) {
+      encodingParamsPart = new char[1 + 20 /* max int len */];
+      sprintf(encodingParamsPart, "/%d", numChannels());
+    } else {
+      encodingParamsPart = strDup("");
+    }
+    char const* const rtpmapFmt = "a=rtpmap:%d %s/%d%s\r\n";
+    unsigned rtpmapFmtSize = strlen(rtpmapFmt)
+      + 3 /* max char len */ + strlen(rtpPayloadFormatName())
+      + 20 /* max int len */ + strlen(encodingParamsPart);
+    char* rtpmapLine = new char[rtpmapFmtSize];
+    sprintf(rtpmapLine, rtpmapFmt,
+	    rtpPayloadType(), rtpPayloadFormatName(),
+	    rtpTimestampFrequency(), encodingParamsPart);
+    delete[] encodingParamsPart;
+
+    return rtpmapLine;
+  } else {
+    // The payload format is staic, so there's no "a=rtpmap:" line:
+    return strDup("");
+  }
+}
+
+char const* RTPSink::auxSDPLine() {
+  return NULL; // by default
+}
+
+
+////////// RTPTransmissionStatsDB //////////
+
+RTPTransmissionStatsDB::RTPTransmissionStatsDB(RTPSink& rtpSink)
+  : fOurRTPSink(rtpSink),
+    fTable(HashTable::create(ONE_WORD_HASH_KEYS)) {
+  fNumReceivers=0;
+}
+
+RTPTransmissionStatsDB::~RTPTransmissionStatsDB() {
+  // First, remove and delete all stats records from the table:
+  RTPTransmissionStats* stats;
+  while ((stats = (RTPTransmissionStats*)fTable->RemoveNext()) != NULL) {
+    delete stats;
+  }
+
+  // Then, delete the table itself:
+  delete fTable;
+}
+
+void RTPTransmissionStatsDB
+::noteIncomingRR(u_int32_t SSRC, struct sockaddr_in const& lastFromAddress,
+                 unsigned lossStats, unsigned lastPacketNumReceived,
+                 unsigned jitter, unsigned lastSRTime, unsigned diffSR_RRTime) {
+  RTPTransmissionStats* stats = lookup(SSRC);
+  if (stats == NULL) {
+    // This is the first time we've heard of this SSRC.
+    // Create a new record for it:
+    stats = new RTPTransmissionStats(fOurRTPSink, SSRC);
+    if (stats == NULL) return;
+    add(SSRC, stats);
+#ifdef DEBUG_RR
+    fprintf(stderr, "Adding new entry for SSRC %x in RTPTransmissionStatsDB\n", SSRC);
+#endif
+  }
+
+  stats->noteIncomingRR(lastFromAddress,
+			lossStats, lastPacketNumReceived, jitter,
+                        lastSRTime, diffSR_RRTime);
+}
+
+void RTPTransmissionStatsDB::removeRecord(u_int32_t SSRC) {
+  RTPTransmissionStats* stats = lookup(SSRC);
+  if (stats != NULL) {
+    long SSRC_long = (long)SSRC;
+    fTable->Remove((char const*)SSRC_long);
+    --fNumReceivers;
+    delete stats;
+  }
+}
+
+RTPTransmissionStatsDB::Iterator
+::Iterator(RTPTransmissionStatsDB& receptionStatsDB)
+  : fIter(HashTable::Iterator::create(*(receptionStatsDB.fTable))) {
+}
+
+RTPTransmissionStatsDB::Iterator::~Iterator() {
+  delete fIter;
+}
+
+RTPTransmissionStats*
+RTPTransmissionStatsDB::Iterator::next() {
+  char const* key; // dummy
+
+  return (RTPTransmissionStats*)(fIter->next(key));
+}
+
+RTPTransmissionStats* RTPTransmissionStatsDB::lookup(u_int32_t SSRC) const {
+  long SSRC_long = (long)SSRC;
+  return (RTPTransmissionStats*)(fTable->Lookup((char const*)SSRC_long));
+}
+
+void RTPTransmissionStatsDB::add(u_int32_t SSRC, RTPTransmissionStats* stats) {
+  long SSRC_long = (long)SSRC;
+  fTable->Add((char const*)SSRC_long, stats);
+  ++fNumReceivers;
+}
+
+
+////////// RTPTransmissionStats //////////
+
+RTPTransmissionStats::RTPTransmissionStats(RTPSink& rtpSink, u_int32_t SSRC)
+  : fOurRTPSink(rtpSink), fSSRC(SSRC), fLastPacketNumReceived(0),
+    fPacketLossRatio(0), fTotNumPacketsLost(0), fJitter(0),
+    fLastSRTime(0), fDiffSR_RRTime(0), fAtLeastTwoRRsHaveBeenReceived(False), fFirstPacket(True),
+    fTotalOctetCount_hi(0), fTotalOctetCount_lo(0),
+    fTotalPacketCount_hi(0), fTotalPacketCount_lo(0) {
+  gettimeofday(&fTimeCreated, NULL);
+
+  fLastOctetCount = rtpSink.octetCount();
+  fLastPacketCount = rtpSink.packetCount();
+}
+
+RTPTransmissionStats::~RTPTransmissionStats() {}
+
+void RTPTransmissionStats
+::noteIncomingRR(struct sockaddr_in const& lastFromAddress,
+		 unsigned lossStats, unsigned lastPacketNumReceived,
+		 unsigned jitter, unsigned lastSRTime,
+		 unsigned diffSR_RRTime) {
+  if (fFirstPacket) {
+    fFirstPacket = False;
+    fFirstPacketNumReported = lastPacketNumReceived;
+  } else {
+    fAtLeastTwoRRsHaveBeenReceived = True;
+    fOldLastPacketNumReceived = fLastPacketNumReceived;
+    fOldTotNumPacketsLost = fTotNumPacketsLost;
+  }
+  gettimeofday(&fTimeReceived, NULL);
+
+  fLastFromAddress = lastFromAddress;
+  fPacketLossRatio = lossStats>>24;
+  fTotNumPacketsLost = lossStats&0xFFFFFF;
+  fLastPacketNumReceived = lastPacketNumReceived;
+  fJitter = jitter;
+  fLastSRTime = lastSRTime;
+  fDiffSR_RRTime = diffSR_RRTime;
+#ifdef DEBUG_RR
+  fprintf(stderr, "RTCP RR data (received at %lu.%06ld): lossStats 0x%08x, lastPacketNumReceived 0x%08x, jitter 0x%08x, lastSRTime 0x%08x, diffSR_RRTime 0x%08x\n",
+          fTimeReceived.tv_sec, fTimeReceived.tv_usec, lossStats, lastPacketNumReceived, jitter, lastSRTime, diffSR_RRTime);
+  unsigned rtd = roundTripDelay();
+  fprintf(stderr, "=> round-trip delay: 0x%04x (== %f seconds)\n", rtd, rtd/65536.0);
+#endif
+
+  // Update our counts of the total number of octets and packets sent towards
+  // this receiver:
+  u_int32_t newOctetCount = fOurRTPSink.octetCount();
+  u_int32_t octetCountDiff = newOctetCount - fLastOctetCount;
+  fLastOctetCount = newOctetCount;
+  u_int32_t prevTotalOctetCount_lo = fTotalOctetCount_lo;
+  fTotalOctetCount_lo += octetCountDiff;
+  if (fTotalOctetCount_lo < prevTotalOctetCount_lo) { // wrap around
+    ++fTotalOctetCount_hi;
+  }
+
+  u_int32_t newPacketCount = fOurRTPSink.packetCount();
+  u_int32_t packetCountDiff = newPacketCount - fLastPacketCount;
+  fLastPacketCount = newPacketCount;
+  u_int32_t prevTotalPacketCount_lo = fTotalPacketCount_lo;
+  fTotalPacketCount_lo += packetCountDiff;
+  if (fTotalPacketCount_lo < prevTotalPacketCount_lo) { // wrap around
+    ++fTotalPacketCount_hi;
+  }
+}
+
+unsigned RTPTransmissionStats::roundTripDelay() const {
+  // Compute the round-trip delay that was indicated by the most recently-received
+  // RTCP RR packet.  Use the method noted in the RTP/RTCP specification (RFC 3350).
+
+  if (fLastSRTime == 0) {
+    // Either no RTCP RR packet has been received yet, or else the
+    // reporting receiver has not yet received any RTCP SR packets from us:
+    return 0;
+  }
+
+  // First, convert the time that we received the last RTCP RR packet to NTP format,
+  // in units of 1/65536 (2^-16) seconds:
+  unsigned lastReceivedTimeNTP_high
+    = fTimeReceived.tv_sec + 0x83AA7E80; // 1970 epoch -> 1900 epoch
+  double fractionalPart = (fTimeReceived.tv_usec*0x0400)/15625.0; // 2^16/10^6
+  unsigned lastReceivedTimeNTP
+    = (unsigned)((lastReceivedTimeNTP_high<<16) + fractionalPart + 0.5);
+
+  int rawResult = lastReceivedTimeNTP - fLastSRTime - fDiffSR_RRTime;
+  if (rawResult < 0) {
+    // This can happen if there's clock drift between the sender and receiver,
+    // and if the round-trip time was very small.
+    rawResult = 0;
+  }
+  return (unsigned)rawResult;
+}
+
+void RTPTransmissionStats::getTotalOctetCount(u_int32_t& hi, u_int32_t& lo) {
+  hi = fTotalOctetCount_hi;
+  lo = fTotalOctetCount_lo;
+}
+
+void RTPTransmissionStats::getTotalPacketCount(u_int32_t& hi, u_int32_t& lo) {
+  hi = fTotalPacketCount_hi;
+  lo = fTotalPacketCount_lo;
+}
+
+unsigned RTPTransmissionStats::packetsReceivedSinceLastRR() const {
+  if (!fAtLeastTwoRRsHaveBeenReceived) return 0;
+
+  return fLastPacketNumReceived-fOldLastPacketNumReceived;
+}
+
+int RTPTransmissionStats::packetsLostBetweenRR() const {
+  if (!fAtLeastTwoRRsHaveBeenReceived) return 0;
+
+  return fTotNumPacketsLost - fOldTotNumPacketsLost;
+}
diff --git a/liveMedia/RTPSource.cpp b/liveMedia/RTPSource.cpp
new file mode 100644
index 0000000..bfbf672
--- /dev/null
+++ b/liveMedia/RTPSource.cpp
@@ -0,0 +1,409 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP Sources
+// Implementation
+
+#include "RTPSource.hh"
+#include "GroupsockHelper.hh"
+
+////////// RTPSource //////////
+
+Boolean RTPSource::lookupByName(UsageEnvironment& env,
+				char const* sourceName,
+				RTPSource*& resultSource) {
+  resultSource = NULL; // unless we succeed
+
+  MediaSource* source;
+  if (!MediaSource::lookupByName(env, sourceName, source)) return False;
+
+  if (!source->isRTPSource()) {
+    env.setResultMsg(sourceName, " is not a RTP source");
+    return False;
+  }
+
+  resultSource = (RTPSource*)source;
+  return True;
+}
+
+Boolean RTPSource::hasBeenSynchronizedUsingRTCP() {
+  return fCurPacketHasBeenSynchronizedUsingRTCP;
+}
+
+Boolean RTPSource::isRTPSource() const {
+  return True;
+}
+
+RTPSource::RTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     u_int32_t rtpTimestampFrequency)
+  : FramedSource(env),
+    fRTPInterface(this, RTPgs),
+    fCurPacketHasBeenSynchronizedUsingRTCP(False), fLastReceivedSSRC(0),
+    fRTCPInstanceForMultiplexedRTCPPackets(NULL), fCrypto(NULL),
+    fRTPPayloadFormat(rtpPayloadFormat), fTimestampFrequency(rtpTimestampFrequency),
+    fSSRC(our_random32()), fEnableRTCPReports(True) {
+  fReceptionStatsDB = new RTPReceptionStatsDB();
+}
+
+RTPSource::~RTPSource() {
+  delete fReceptionStatsDB;
+}
+
+void RTPSource::getAttributes() const {
+  envir().setResultMsg(""); // Fix later to get attributes from  header #####
+}
+
+
+////////// RTPReceptionStatsDB //////////
+
+RTPReceptionStatsDB::RTPReceptionStatsDB()
+  : fTable(HashTable::create(ONE_WORD_HASH_KEYS)), fTotNumPacketsReceived(0) {
+  reset();
+}
+
+void RTPReceptionStatsDB::reset() {
+  fNumActiveSourcesSinceLastReset = 0;
+
+  Iterator iter(*this);
+  RTPReceptionStats* stats;
+  while ((stats = iter.next()) != NULL) {
+    stats->reset();
+  }
+}
+
+RTPReceptionStatsDB::~RTPReceptionStatsDB() {
+  // First, remove and delete all stats records from the table:
+  RTPReceptionStats* stats;
+  while ((stats = (RTPReceptionStats*)fTable->RemoveNext()) != NULL) {
+    delete stats;
+  }
+
+  // Then, delete the table itself:
+  delete fTable;
+}
+
+void RTPReceptionStatsDB
+::noteIncomingPacket(u_int32_t SSRC, u_int16_t seqNum,
+		     u_int32_t rtpTimestamp, unsigned timestampFrequency,
+		     Boolean useForJitterCalculation,
+		     struct timeval& resultPresentationTime,
+		     Boolean& resultHasBeenSyncedUsingRTCP,
+		     unsigned packetSize) {
+  ++fTotNumPacketsReceived;
+  RTPReceptionStats* stats = lookup(SSRC);
+  if (stats == NULL) {
+    // This is the first time we've heard from this SSRC.
+    // Create a new record for it:
+    stats = new RTPReceptionStats(SSRC, seqNum);
+    if (stats == NULL) return;
+    add(SSRC, stats);
+  }
+
+  if (stats->numPacketsReceivedSinceLastReset() == 0) {
+    ++fNumActiveSourcesSinceLastReset;
+  }
+
+  stats->noteIncomingPacket(seqNum, rtpTimestamp, timestampFrequency,
+			    useForJitterCalculation,
+			    resultPresentationTime,
+			    resultHasBeenSyncedUsingRTCP, packetSize);
+}
+
+void RTPReceptionStatsDB
+::noteIncomingSR(u_int32_t SSRC,
+		 u_int32_t ntpTimestampMSW, u_int32_t ntpTimestampLSW,
+		 u_int32_t rtpTimestamp) {
+  RTPReceptionStats* stats = lookup(SSRC);
+  if (stats == NULL) {
+    // This is the first time we've heard of this SSRC.
+    // Create a new record for it:
+    stats = new RTPReceptionStats(SSRC);
+    if (stats == NULL) return;
+    add(SSRC, stats);
+  }
+
+  stats->noteIncomingSR(ntpTimestampMSW, ntpTimestampLSW, rtpTimestamp);
+}
+
+void RTPReceptionStatsDB::removeRecord(u_int32_t SSRC) {
+  RTPReceptionStats* stats = lookup(SSRC);
+  if (stats != NULL) {
+    long SSRC_long = (long)SSRC;
+    fTable->Remove((char const*)SSRC_long);
+    delete stats;
+  }
+}
+
+RTPReceptionStatsDB::Iterator
+::Iterator(RTPReceptionStatsDB& receptionStatsDB)
+  : fIter(HashTable::Iterator::create(*(receptionStatsDB.fTable))) {
+}
+
+RTPReceptionStatsDB::Iterator::~Iterator() {
+  delete fIter;
+}
+
+RTPReceptionStats*
+RTPReceptionStatsDB::Iterator::next(Boolean includeInactiveSources) {
+  char const* key; // dummy
+
+  // If asked, skip over any sources that haven't been active
+  // since the last reset:
+  RTPReceptionStats* stats;
+  do {
+    stats = (RTPReceptionStats*)(fIter->next(key));
+  } while (stats != NULL && !includeInactiveSources
+	   && stats->numPacketsReceivedSinceLastReset() == 0);
+
+  return stats;
+}
+
+RTPReceptionStats* RTPReceptionStatsDB::lookup(u_int32_t SSRC) const {
+  long SSRC_long = (long)SSRC;
+  return (RTPReceptionStats*)(fTable->Lookup((char const*)SSRC_long));
+}
+
+void RTPReceptionStatsDB::add(u_int32_t SSRC, RTPReceptionStats* stats) {
+  long SSRC_long = (long)SSRC;
+  fTable->Add((char const*)SSRC_long, stats);
+}
+
+////////// RTPReceptionStats //////////
+
+RTPReceptionStats::RTPReceptionStats(u_int32_t SSRC, u_int16_t initialSeqNum) {
+  initSeqNum(initialSeqNum);
+  init(SSRC);
+}
+
+RTPReceptionStats::RTPReceptionStats(u_int32_t SSRC) {
+  init(SSRC);
+}
+
+RTPReceptionStats::~RTPReceptionStats() {
+}
+
+void RTPReceptionStats::init(u_int32_t SSRC) {
+  fSSRC = SSRC;
+  fTotNumPacketsReceived = 0;
+  fTotBytesReceived_hi = fTotBytesReceived_lo = 0;
+  fBaseExtSeqNumReceived = 0;
+  fHighestExtSeqNumReceived = 0;
+  fHaveSeenInitialSequenceNumber = False;
+  fLastTransit = ~0;
+  fPreviousPacketRTPTimestamp = 0;
+  fJitter = 0.0;
+  fLastReceivedSR_NTPmsw = fLastReceivedSR_NTPlsw = 0;
+  fLastReceivedSR_time.tv_sec = fLastReceivedSR_time.tv_usec = 0;
+  fLastPacketReceptionTime.tv_sec = fLastPacketReceptionTime.tv_usec = 0;
+  fMinInterPacketGapUS = 0x7FFFFFFF;
+  fMaxInterPacketGapUS = 0;
+  fTotalInterPacketGaps.tv_sec = fTotalInterPacketGaps.tv_usec = 0;
+  fHasBeenSynchronized = False;
+  fSyncTime.tv_sec = fSyncTime.tv_usec = 0;
+  reset();
+}
+
+void RTPReceptionStats::initSeqNum(u_int16_t initialSeqNum) {
+    fBaseExtSeqNumReceived = 0x10000 | initialSeqNum;
+    fHighestExtSeqNumReceived = 0x10000 | initialSeqNum;
+    fHaveSeenInitialSequenceNumber = True;
+}
+
+#ifndef MILLION
+#define MILLION 1000000
+#endif
+
+void RTPReceptionStats
+::noteIncomingPacket(u_int16_t seqNum, u_int32_t rtpTimestamp,
+		     unsigned timestampFrequency,
+		     Boolean useForJitterCalculation,
+		     struct timeval& resultPresentationTime,
+		     Boolean& resultHasBeenSyncedUsingRTCP,
+		     unsigned packetSize) {
+  if (!fHaveSeenInitialSequenceNumber) initSeqNum(seqNum);
+
+  ++fNumPacketsReceivedSinceLastReset;
+  ++fTotNumPacketsReceived;
+  u_int32_t prevTotBytesReceived_lo = fTotBytesReceived_lo;
+  fTotBytesReceived_lo += packetSize;
+  if (fTotBytesReceived_lo < prevTotBytesReceived_lo) { // wrap-around
+    ++fTotBytesReceived_hi;
+  }
+
+  // Check whether the new sequence number is the highest yet seen:
+  unsigned oldSeqNum = (fHighestExtSeqNumReceived&0xFFFF);
+  unsigned seqNumCycle = (fHighestExtSeqNumReceived&0xFFFF0000);
+  unsigned seqNumDifference = (unsigned)((int)seqNum-(int)oldSeqNum);
+  unsigned newSeqNum = 0;
+  if (seqNumLT((u_int16_t)oldSeqNum, seqNum)) {
+    // This packet was not an old packet received out of order, so check it:
+    
+    if (seqNumDifference >= 0x8000) {
+      // The sequence number wrapped around, so start a new cycle:
+      seqNumCycle += 0x10000;
+    }
+    
+    newSeqNum = seqNumCycle|seqNum;
+    if (newSeqNum > fHighestExtSeqNumReceived) {
+      fHighestExtSeqNumReceived = newSeqNum;
+    }
+  } else if (fTotNumPacketsReceived > 1) {
+    // This packet was an old packet received out of order
+    
+    if ((int)seqNumDifference >= 0x8000) {
+      // The sequence number wrapped around, so switch to an old cycle:
+      seqNumCycle -= 0x10000;
+    }
+    
+    newSeqNum = seqNumCycle|seqNum;
+    if (newSeqNum < fBaseExtSeqNumReceived) {
+      fBaseExtSeqNumReceived = newSeqNum;
+    }
+  }
+
+  // Record the inter-packet delay
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+  if (fLastPacketReceptionTime.tv_sec != 0
+      || fLastPacketReceptionTime.tv_usec != 0) {
+    unsigned gap
+      = (timeNow.tv_sec - fLastPacketReceptionTime.tv_sec)*MILLION
+      + timeNow.tv_usec - fLastPacketReceptionTime.tv_usec; 
+    if (gap > fMaxInterPacketGapUS) {
+      fMaxInterPacketGapUS = gap;
+    }
+    if (gap < fMinInterPacketGapUS) {
+      fMinInterPacketGapUS = gap;
+    }
+    fTotalInterPacketGaps.tv_usec += gap;
+    if (fTotalInterPacketGaps.tv_usec >= MILLION) {
+      ++fTotalInterPacketGaps.tv_sec;
+      fTotalInterPacketGaps.tv_usec -= MILLION;
+    }
+  }
+  fLastPacketReceptionTime = timeNow;
+
+  // Compute the current 'jitter' using the received packet's RTP timestamp,
+  // and the RTP timestamp that would correspond to the current time.
+  // (Use the code from appendix A.8 in the RTP spec.)
+  // Note, however, that we don't use this packet if its timestamp is
+  // the same as that of the previous packet (this indicates a multi-packet
+  // fragment), or if we've been explicitly told not to use this packet.
+  if (useForJitterCalculation
+      && rtpTimestamp != fPreviousPacketRTPTimestamp) {
+    unsigned arrival = (timestampFrequency*timeNow.tv_sec);
+    arrival += (unsigned)
+      ((2.0*timestampFrequency*timeNow.tv_usec + 1000000.0)/2000000);
+            // note: rounding
+    int transit = arrival - rtpTimestamp;
+    if (fLastTransit == (~0)) fLastTransit = transit; // hack for first time
+    int d = transit - fLastTransit;
+    fLastTransit = transit;
+    if (d < 0) d = -d;
+    fJitter += (1.0/16.0) * ((double)d - fJitter);
+  }
+
+  // Return the 'presentation time' that corresponds to "rtpTimestamp":
+  if (fSyncTime.tv_sec == 0 && fSyncTime.tv_usec == 0) {
+    // This is the first timestamp that we've seen, so use the current
+    // 'wall clock' time as the synchronization time.  (This will be
+    // corrected later when we receive RTCP SRs.)
+    fSyncTimestamp = rtpTimestamp;
+    fSyncTime = timeNow;
+  }
+
+  int timestampDiff = rtpTimestamp - fSyncTimestamp;
+      // Note: This works even if the timestamp wraps around
+      // (as long as "int" is 32 bits)
+
+  // Divide this by the timestamp frequency to get real time:
+  double timeDiff = timestampDiff/(double)timestampFrequency;
+
+  // Add this to the 'sync time' to get our result:
+  unsigned const million = 1000000;
+  unsigned seconds, uSeconds;
+  if (timeDiff >= 0.0) {
+    seconds = fSyncTime.tv_sec + (unsigned)(timeDiff);
+    uSeconds = fSyncTime.tv_usec
+      + (unsigned)((timeDiff - (unsigned)timeDiff)*million);
+    if (uSeconds >= million) {
+      uSeconds -= million;
+      ++seconds;
+    }
+  } else {
+    timeDiff = -timeDiff;
+    seconds = fSyncTime.tv_sec - (unsigned)(timeDiff);
+    uSeconds = fSyncTime.tv_usec
+      - (unsigned)((timeDiff - (unsigned)timeDiff)*million);
+    if ((int)uSeconds < 0) {
+      uSeconds += million;
+      --seconds;
+    }
+  }
+  resultPresentationTime.tv_sec = seconds;
+  resultPresentationTime.tv_usec = uSeconds;
+  resultHasBeenSyncedUsingRTCP = fHasBeenSynchronized;
+
+  // Save these as the new synchronization timestamp & time:
+  fSyncTimestamp = rtpTimestamp;
+  fSyncTime = resultPresentationTime;
+
+  fPreviousPacketRTPTimestamp = rtpTimestamp;
+}
+
+void RTPReceptionStats::noteIncomingSR(u_int32_t ntpTimestampMSW,
+				       u_int32_t ntpTimestampLSW,
+				       u_int32_t rtpTimestamp) {
+  fLastReceivedSR_NTPmsw = ntpTimestampMSW;
+  fLastReceivedSR_NTPlsw = ntpTimestampLSW;
+
+  gettimeofday(&fLastReceivedSR_time, NULL);
+
+  // Use this SR to update time synchronization information:
+  fSyncTimestamp = rtpTimestamp;
+  fSyncTime.tv_sec = ntpTimestampMSW - 0x83AA7E80; // 1/1/1900 -> 1/1/1970
+  double microseconds = (ntpTimestampLSW*15625.0)/0x04000000; // 10^6/2^32
+  fSyncTime.tv_usec = (unsigned)(microseconds+0.5);
+  fHasBeenSynchronized = True;
+}
+
+double RTPReceptionStats::totNumKBytesReceived() const {
+  double const hiMultiplier = 0x20000000/125.0; // == (2^32)/(10^3)
+  return fTotBytesReceived_hi*hiMultiplier + fTotBytesReceived_lo/1000.0;
+}
+
+unsigned RTPReceptionStats::jitter() const {
+  return (unsigned)fJitter;
+}
+
+void RTPReceptionStats::reset() {
+  fNumPacketsReceivedSinceLastReset = 0;
+  fLastResetExtSeqNumReceived = fHighestExtSeqNumReceived;
+}
+
+Boolean seqNumLT(u_int16_t s1, u_int16_t s2) {
+  // a 'less-than' on 16-bit sequence numbers
+  int diff = s2-s1;
+  if (diff > 0) {
+    return (diff < 0x8000);
+  } else if (diff < 0) {
+    return (diff < -0x8000);
+  } else { // diff == 0
+    return False;
+  }
+}
diff --git a/liveMedia/RTSPClient.cpp b/liveMedia/RTSPClient.cpp
new file mode 100644
index 0000000..f47acb5
--- /dev/null
+++ b/liveMedia/RTSPClient.cpp
@@ -0,0 +1,2125 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic RTSP client
+// Implementation
+
+#include "RTSPClient.hh"
+#include "RTSPCommon.hh"
+#include "Base64.hh"
+#include "Locale.hh"
+#include <GroupsockHelper.hh>
+#include "ourMD5.hh"
+
+RTSPClient* RTSPClient::createNew(UsageEnvironment& env, char const* rtspURL,
+				  int verbosityLevel,
+				  char const* applicationName,
+				  portNumBits tunnelOverHTTPPortNum,
+				  int socketNumToServer) {
+  return new RTSPClient(env, rtspURL,
+			verbosityLevel, applicationName, tunnelOverHTTPPortNum, socketNumToServer);
+}
+
+unsigned RTSPClient::sendDescribeCommand(responseHandler* responseHandler, Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  return sendRequest(new RequestRecord(++fCSeq, "DESCRIBE", responseHandler));
+}
+
+unsigned RTSPClient::sendOptionsCommand(responseHandler* responseHandler, Authenticator* authenticator) {
+  if (authenticator != NULL) fCurrentAuthenticator = *authenticator;
+  return sendRequest(new RequestRecord(++fCSeq, "OPTIONS", responseHandler));
+}
+
+unsigned RTSPClient::sendAnnounceCommand(char const* sdpDescription, responseHandler* responseHandler, Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  return sendRequest(new RequestRecord(++fCSeq, "ANNOUNCE", responseHandler, NULL, NULL, False, 0.0, 0.0, 0.0, sdpDescription));
+}
+
+unsigned RTSPClient::sendSetupCommand(MediaSubsession& subsession, responseHandler* responseHandler,
+                                      Boolean streamOutgoing, Boolean streamUsingTCP, Boolean forceMulticastOnUnspecified,
+				      Authenticator* authenticator) {
+  if (fTunnelOverHTTPPortNum != 0) streamUsingTCP = True; // RTSP-over-HTTP tunneling uses TCP (by definition)
+  // However, if we're using a TLS connection, streaming over TCP doesn't work, so disable it:
+  if (fTLS.isNeeded) streamUsingTCP = False;
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+
+  u_int32_t booleanFlags = 0;
+  if (streamUsingTCP) booleanFlags |= 0x1;
+  if (streamOutgoing) booleanFlags |= 0x2;
+  if (forceMulticastOnUnspecified) booleanFlags |= 0x4;
+  return sendRequest(new RequestRecord(++fCSeq, "SETUP", responseHandler, NULL, &subsession, booleanFlags));
+}
+
+unsigned RTSPClient::sendPlayCommand(MediaSession& session, responseHandler* responseHandler,
+                                     double start, double end, float scale,
+                                     Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  sendDummyUDPPackets(session); // hack to improve NAT traversal
+  return sendRequest(new RequestRecord(++fCSeq, "PLAY", responseHandler, &session, NULL, 0, start, end, scale));
+}
+
+unsigned RTSPClient::sendPlayCommand(MediaSubsession& subsession, responseHandler* responseHandler,
+                                     double start, double end, float scale,
+                                     Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  sendDummyUDPPackets(subsession); // hack to improve NAT traversal
+  return sendRequest(new RequestRecord(++fCSeq, "PLAY", responseHandler, NULL, &subsession, 0, start, end, scale));
+}
+
+unsigned RTSPClient::sendPlayCommand(MediaSession& session, responseHandler* responseHandler,
+				     char const* absStartTime, char const* absEndTime, float scale,
+                                     Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  sendDummyUDPPackets(session); // hack to improve NAT traversal
+  return sendRequest(new RequestRecord(++fCSeq, responseHandler, absStartTime, absEndTime, scale, &session, NULL));
+}
+
+unsigned RTSPClient::sendPlayCommand(MediaSubsession& subsession, responseHandler* responseHandler,
+				     char const* absStartTime, char const* absEndTime, float scale,
+                                     Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  sendDummyUDPPackets(subsession); // hack to improve NAT traversal
+  return sendRequest(new RequestRecord(++fCSeq, responseHandler, absStartTime, absEndTime, scale, NULL, &subsession));
+}
+
+unsigned RTSPClient::sendPauseCommand(MediaSession& session, responseHandler* responseHandler, Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  return sendRequest(new RequestRecord(++fCSeq, "PAUSE", responseHandler, &session));
+}
+
+unsigned RTSPClient::sendPauseCommand(MediaSubsession& subsession, responseHandler* responseHandler, Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  return sendRequest(new RequestRecord(++fCSeq, "PAUSE", responseHandler, NULL, &subsession));
+}
+
+unsigned RTSPClient::sendRecordCommand(MediaSession& session, responseHandler* responseHandler, Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  return sendRequest(new RequestRecord(++fCSeq, "RECORD", responseHandler, &session));
+}
+
+unsigned RTSPClient::sendRecordCommand(MediaSubsession& subsession, responseHandler* responseHandler, Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  return sendRequest(new RequestRecord(++fCSeq, "RECORD", responseHandler, NULL, &subsession));
+}
+
+unsigned RTSPClient::sendTeardownCommand(MediaSession& session, responseHandler* responseHandler, Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  return sendRequest(new RequestRecord(++fCSeq, "TEARDOWN", responseHandler, &session));
+}
+
+unsigned RTSPClient::sendTeardownCommand(MediaSubsession& subsession, responseHandler* responseHandler, Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  return sendRequest(new RequestRecord(++fCSeq, "TEARDOWN", responseHandler, NULL, &subsession));
+}
+
+unsigned RTSPClient::sendSetParameterCommand(MediaSession& session, responseHandler* responseHandler,
+                                             char const* parameterName, char const* parameterValue,
+                                             Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+  char* paramString = new char[strlen(parameterName) + strlen(parameterValue) + 10];
+  sprintf(paramString, "%s: %s\r\n", parameterName, parameterValue);
+  unsigned result = sendRequest(new RequestRecord(++fCSeq, "SET_PARAMETER", responseHandler, &session, NULL, False, 0.0, 0.0, 0.0, paramString));
+  delete[] paramString;
+  return result;
+}
+
+unsigned RTSPClient::sendGetParameterCommand(MediaSession& session, responseHandler* responseHandler, char const* parameterName,
+                                             Authenticator* authenticator) {
+  if (fCurrentAuthenticator < authenticator) fCurrentAuthenticator = *authenticator;
+
+  // We assume that:
+  //    parameterName is NULL or "" means: Send no body in the request.
+  //    parameterName is non-empty means: Send "<parameterName>\r\n" as the request body.  
+  unsigned parameterNameLen = parameterName == NULL ? 0 : strlen(parameterName);
+  char* paramString = new char[parameterNameLen + 3]; // the 3 is for \r\n + the '\0' byte
+  if (parameterName == NULL || parameterName[0] == '\0') {
+    paramString[0] = '\0';
+  } else {
+    sprintf(paramString, "%s\r\n", parameterName);
+  }
+  unsigned result = sendRequest(new RequestRecord(++fCSeq, "GET_PARAMETER", responseHandler, &session, NULL, False, 0.0, 0.0, 0.0, paramString));
+  delete[] paramString;
+  return result;
+}
+
+void RTSPClient::sendDummyUDPPackets(MediaSession& session, unsigned numDummyPackets) {
+  MediaSubsessionIterator iter(session);
+  MediaSubsession* subsession;
+
+  while ((subsession = iter.next()) != NULL) {
+    sendDummyUDPPackets(*subsession, numDummyPackets);
+  }
+}
+
+void RTSPClient::sendDummyUDPPackets(MediaSubsession& subsession, unsigned numDummyPackets) {
+  // Hack: To increase the likelihood of UDP packets from the server reaching us,
+  // if we're behind a NAT, send a few 'dummy' UDP packets to the server now.
+  // (We do this on both our RTP port and our RTCP port.)
+  Groupsock* gs1 = NULL; Groupsock* gs2 = NULL;
+  if (subsession.rtpSource() != NULL) gs1 = subsession.rtpSource()->RTPgs();
+  if (subsession.rtcpInstance() != NULL) gs2 = subsession.rtcpInstance()->RTCPgs();
+  u_int32_t const dummy = 0xFEEDFACE;
+  for (unsigned i = 0; i < numDummyPackets; ++i) {
+    if (gs1 != NULL) gs1->output(envir(), (unsigned char*)&dummy, sizeof dummy);
+    if (gs2 != NULL) gs2->output(envir(), (unsigned char*)&dummy, sizeof dummy);
+  }
+}
+
+void RTSPClient::setSpeed(MediaSession& session, float speed) { 
+  // Optionally set download speed for session to be used later on PLAY command:
+  // The user should call this function after the MediaSession is instantiated, but before the
+  // first "sendPlayCommand()" is called.
+  session.speed() = speed;
+  MediaSubsessionIterator iter(session);
+  MediaSubsession* subsession;
+
+  while ((subsession = iter.next()) != NULL) {
+    subsession->speed() = speed;
+  }
+}
+
+Boolean RTSPClient::changeResponseHandler(unsigned cseq, responseHandler* newResponseHandler) { 
+  // Look for the matching request record in each of our 'pending requests' queues:
+  RequestRecord* request;
+  if ((request = fRequestsAwaitingConnection.findByCSeq(cseq)) != NULL
+      || (request = fRequestsAwaitingHTTPTunneling.findByCSeq(cseq)) != NULL
+      || (request = fRequestsAwaitingResponse.findByCSeq(cseq)) != NULL) {
+    request->handler() = newResponseHandler;
+    return True;
+  }
+
+  return False;
+}
+
+Boolean RTSPClient::lookupByName(UsageEnvironment& env,
+				 char const* instanceName,
+				 RTSPClient*& resultClient) {
+  resultClient = NULL; // unless we succeed
+
+  Medium* medium;
+  if (!Medium::lookupByName(env, instanceName, medium)) return False;
+
+  if (!medium->isRTSPClient()) {
+    env.setResultMsg(instanceName, " is not a RTSP client");
+    return False;
+  }
+
+  resultClient = (RTSPClient*)medium;
+  return True;
+}
+
+static void copyUsernameOrPasswordStringFromURL(char* dest, char const* src, unsigned len) {
+  // Normally, we just copy from the source to the destination.  However, if the source contains
+  // %-encoded characters, then we decode them while doing the copy:
+  while (len > 0) {
+    int nBefore = 0;
+    int nAfter = 0;
+    
+    if (*src == '%' && len >= 3 && sscanf(src+1, "%n%2hhx%n", &nBefore, dest, &nAfter) == 1) {
+      unsigned codeSize = nAfter - nBefore; // should be 1 or 2
+
+      ++dest;
+      src += (1 + codeSize);
+      len -= (1 + codeSize);
+    } else {
+      *dest++ = *src++;
+      --len;
+    }
+  }
+  *dest = '\0';
+}
+
+Boolean RTSPClient::parseRTSPURL(char const* url,
+				 char*& username, char*& password,
+				 NetAddress& address,
+				 portNumBits& portNum,
+				 char const** urlSuffix) {
+  do {
+    // Parse the URL as "rtsp://[<username>[:<password>]@]<server-address-or-name>[:<port>][/<stream-name>]" (or "rtsps://...")
+    char const* prefix1 = "rtsp://";
+    unsigned const prefix1Length = 7;
+    char const* prefix2 = "rtsps://";
+    unsigned const prefix2Length = 8;
+
+    portNumBits defaultPortNumber;
+    char const* from;
+    if (_strncasecmp(url, prefix1, prefix1Length) == 0) {
+      defaultPortNumber = 554;
+      from = &url[prefix1Length];
+    } else if (_strncasecmp(url, prefix2, prefix2Length) == 0) {
+      useTLS();
+      defaultPortNumber = 322;
+      from = &url[prefix2Length];
+    } else {
+      envir().setResultMsg("URL does not begin with \"rtsp://\" or \"rtsps://\"");
+      break;
+    }
+
+    unsigned const parseBufferSize = 100;
+    char parseBuffer[parseBufferSize];
+
+    // Check whether "<username>[:<password>]@" occurs next.
+    // We do this by checking whether '@' appears before the end of the URL, or before the first '/'.
+    username = password = NULL; // default return values
+    char const* colonPasswordStart = NULL;
+    char const* lastAtPtr = NULL;
+    for (char const* p = from; *p != '\0' && *p != '/'; ++p) {
+      if (*p == ':' && colonPasswordStart == NULL) {
+	colonPasswordStart = p;
+      } else if (*p == '@') {
+	lastAtPtr = p;
+      }
+    }
+    if (lastAtPtr != NULL) {      
+      // We found <username> (and perhaps <password>).  Copy them into newly-allocated result strings:
+      if (colonPasswordStart == NULL || colonPasswordStart > lastAtPtr) colonPasswordStart = lastAtPtr;
+
+      char const* usernameStart = from;
+      unsigned usernameLen = colonPasswordStart - usernameStart;
+      username = new char[usernameLen + 1] ; // allow for the trailing '\0'
+      copyUsernameOrPasswordStringFromURL(username, usernameStart, usernameLen);
+
+      char const* passwordStart = colonPasswordStart;
+      if (passwordStart < lastAtPtr) ++passwordStart; // skip over the ':'
+      unsigned passwordLen = lastAtPtr - passwordStart;
+      password = new char[passwordLen + 1]; // allow for the trailing '\0'
+      copyUsernameOrPasswordStringFromURL(password, passwordStart, passwordLen);
+
+      from = lastAtPtr + 1; // skip over the '@'
+    }
+
+    // Next, parse <server-address-or-name>
+    char* to = &parseBuffer[0];
+    unsigned i;
+    for (i = 0; i < parseBufferSize; ++i) {
+      if (*from == '\0' || *from == ':' || *from == '/') {
+	// We've completed parsing the address
+	*to = '\0';
+	break;
+      }
+      *to++ = *from++;
+    }
+    if (i == parseBufferSize) {
+      envir().setResultMsg("URL is too long");
+      break;
+    }
+
+    NetAddressList addresses(parseBuffer);
+    if (addresses.numAddresses() == 0) {
+      envir().setResultMsg("Failed to find network address for \"",
+		       parseBuffer, "\"");
+      break;
+    }
+    address = *(addresses.firstAddress());
+
+    portNum = defaultPortNumber; // unless it's specified explicitly in the URL
+    char nextChar = *from;
+    if (nextChar == ':') {
+      int portNumInt;
+      if (sscanf(++from, "%d", &portNumInt) != 1) {
+	envir().setResultMsg("No port number follows ':'");
+	break;
+      }
+      if (portNumInt < 1 || portNumInt > 65535) {
+	envir().setResultMsg("Bad port number");
+	break;
+      }
+      portNum = (portNumBits)portNumInt;
+      while (*from >= '0' && *from <= '9') ++from; // skip over port number
+    }
+
+    // The remainder of the URL is the suffix:
+    if (urlSuffix != NULL) *urlSuffix = from;
+
+    return True;
+  } while (0);
+
+  // An error occurred in the parsing:
+  return False;
+}
+
+void RTSPClient::setUserAgentString(char const* userAgentName) {
+  if (userAgentName == NULL) return;
+
+  // Change the existing user agent header string:
+  char const* const formatStr = "User-Agent: %s\r\n";
+  unsigned const headerSize = strlen(formatStr) + strlen(userAgentName);
+  delete[] fUserAgentHeaderStr;
+  fUserAgentHeaderStr = new char[headerSize];
+  sprintf(fUserAgentHeaderStr, formatStr, userAgentName);
+  fUserAgentHeaderStrLen = strlen(fUserAgentHeaderStr);
+}
+
+unsigned RTSPClient::responseBufferSize = 20000; // default value; you can reassign this in your application if you need to
+
+RTSPClient::RTSPClient(UsageEnvironment& env, char const* rtspURL,
+		       int verbosityLevel, char const* applicationName,
+		       portNumBits tunnelOverHTTPPortNum, int socketNumToServer)
+  : Medium(env),
+    desiredMaxIncomingPacketSize(0), fVerbosityLevel(verbosityLevel), fCSeq(1),
+    fAllowBasicAuthentication(True), fServerAddress(0),
+    fTunnelOverHTTPPortNum(tunnelOverHTTPPortNum),
+    fUserAgentHeaderStr(NULL), fUserAgentHeaderStrLen(0),
+    fInputSocketNum(-1), fOutputSocketNum(-1), fBaseURL(NULL), fTCPStreamIdCount(0),
+    fLastSessionId(NULL), fSessionTimeoutParameter(0), fSessionCookieCounter(0), fHTTPTunnelingConnectionIsPending(False),
+    fTLS(*this) {
+  setBaseURL(rtspURL);
+
+  fResponseBuffer = new char[responseBufferSize+1];
+  resetResponseBuffer();
+
+  if (socketNumToServer >= 0) {
+    // This socket number is (assumed to be) already connected to the server.
+    // Use it, and arrange to handle responses to requests sent on it:
+    fInputSocketNum = fOutputSocketNum = socketNumToServer;
+    env.taskScheduler().setBackgroundHandling(fInputSocketNum, SOCKET_READABLE|SOCKET_EXCEPTION,
+						  (TaskScheduler::BackgroundHandlerProc*)&incomingDataHandler, this);
+  }
+
+  // Set the "User-Agent:" header to use in each request:
+  char const* const libName = "LIVE555 Streaming Media v";
+  char const* const libVersionStr = LIVEMEDIA_LIBRARY_VERSION_STRING;
+  char const* libPrefix; char const* libSuffix;
+  if (applicationName == NULL || applicationName[0] == '\0') {
+    applicationName = libPrefix = libSuffix = "";
+  } else {
+    libPrefix = " (";
+    libSuffix = ")";
+  }
+  unsigned userAgentNameSize
+    = strlen(applicationName) + strlen(libPrefix) + strlen(libName) + strlen(libVersionStr) + strlen(libSuffix) + 1;
+  char* userAgentName = new char[userAgentNameSize];
+  sprintf(userAgentName, "%s%s%s%s%s", applicationName, libPrefix, libName, libVersionStr, libSuffix);
+  setUserAgentString(userAgentName);
+  delete[] userAgentName;
+}
+
+RTSPClient::~RTSPClient() {
+  reset();
+
+  delete[] fResponseBuffer;
+  delete[] fUserAgentHeaderStr;
+}
+
+void RTSPClient::reset() {
+  resetTCPSockets();
+  resetResponseBuffer();
+  fRequestsAwaitingConnection.reset();
+  fRequestsAwaitingHTTPTunneling.reset();
+  fRequestsAwaitingResponse.reset();
+  fServerAddress = 0;
+
+  setBaseURL(NULL);
+
+  fCurrentAuthenticator.reset();
+
+  delete[] fLastSessionId; fLastSessionId = NULL;
+}
+
+void RTSPClient::setBaseURL(char const* url) {
+  delete[] fBaseURL; fBaseURL = strDup(url);
+}
+
+int RTSPClient::grabSocket() {
+  int inputSocket = fInputSocketNum;
+  RTPInterface::clearServerRequestAlternativeByteHandler(envir(), fInputSocketNum); // in case we were receiving RTP-over-TCP
+  fInputSocketNum = -1;
+
+  return inputSocket;
+}
+
+unsigned RTSPClient::sendRequest(RequestRecord* request) {
+  char* cmd = NULL;
+  do {
+    Boolean connectionIsPending = False;
+    if (!fRequestsAwaitingConnection.isEmpty()) {
+      // A connection is currently pending (with at least one enqueued request).  Enqueue this request also:
+      connectionIsPending = True;
+    } else if (fInputSocketNum < 0) { // we need to open a connection
+      int connectResult = openConnection();
+      if (connectResult < 0) break; // an error occurred
+      else if (connectResult == 0) {
+	// A connection is pending
+        connectionIsPending = True;
+      } // else the connection succeeded.  Continue sending the command.
+    }
+    if (connectionIsPending) {
+      fRequestsAwaitingConnection.enqueue(request);
+      return request->cseq();
+    }
+
+    // If requested (and we're not already doing it, or have done it), set up the special protocol for tunneling RTSP-over-HTTP:
+    if (fTunnelOverHTTPPortNum != 0 && strcmp(request->commandName(), "GET") != 0 && fOutputSocketNum == fInputSocketNum) {
+      if (!setupHTTPTunneling1()) break;
+      fRequestsAwaitingHTTPTunneling.enqueue(request);
+      return request->cseq();
+    }
+
+    // Construct and send the command:
+
+    // First, construct command-specific headers that we need:
+
+    char* cmdURL = fBaseURL; // by default
+    Boolean cmdURLWasAllocated = False;
+
+    char const* protocolStr = "RTSP/1.0"; // by default
+
+    char* extraHeaders = (char*)""; // by default
+    Boolean extraHeadersWereAllocated = False; 
+
+    char* contentLengthHeader = (char*)""; // by default
+    Boolean contentLengthHeaderWasAllocated = False;
+
+    if (!setRequestFields(request,
+			  cmdURL, cmdURLWasAllocated,
+			  protocolStr,
+			  extraHeaders, extraHeadersWereAllocated)) {
+      break;
+    }
+
+    char const* contentStr = request->contentStr(); // by default
+    if (contentStr == NULL) contentStr = "";
+    unsigned contentStrLen = strlen(contentStr);
+    if (contentStrLen > 0) {
+      char const* contentLengthHeaderFmt =
+	"Content-Length: %d\r\n";
+      unsigned contentLengthHeaderSize = strlen(contentLengthHeaderFmt)
+	+ 20 /* max int len */;
+      contentLengthHeader = new char[contentLengthHeaderSize];
+      sprintf(contentLengthHeader, contentLengthHeaderFmt, contentStrLen);
+      contentLengthHeaderWasAllocated = True;
+    }
+
+    char* authenticatorStr = createAuthenticatorString(request->commandName(), fBaseURL);
+
+    char const* const cmdFmt =
+      "%s %s %s\r\n"
+      "CSeq: %d\r\n"
+      "%s"
+      "%s"
+      "%s"
+      "%s"
+      "\r\n"
+      "%s";
+    unsigned cmdSize = strlen(cmdFmt)
+      + strlen(request->commandName()) + strlen(cmdURL) + strlen(protocolStr)
+      + 20 /* max int len */
+      + strlen(authenticatorStr)
+      + fUserAgentHeaderStrLen
+      + strlen(extraHeaders)
+      + strlen(contentLengthHeader)
+      + contentStrLen;
+    cmd = new char[cmdSize];
+    sprintf(cmd, cmdFmt,
+	    request->commandName(), cmdURL, protocolStr,
+	    request->cseq(),
+	    authenticatorStr,
+	    fUserAgentHeaderStr,
+            extraHeaders,
+	    contentLengthHeader,
+	    contentStr);
+    delete[] authenticatorStr;
+    if (cmdURLWasAllocated) delete[] cmdURL;
+    if (extraHeadersWereAllocated) delete[] extraHeaders;
+    if (contentLengthHeaderWasAllocated) delete[] contentLengthHeader;
+
+    if (fVerbosityLevel >= 1) envir() << "Sending request: " << cmd << "\n";
+
+    if (fTunnelOverHTTPPortNum != 0 && strcmp(request->commandName(), "GET") != 0 && strcmp(request->commandName(), "POST") != 0) {
+      // When we're tunneling RTSP-over-HTTP, we Base-64-encode the request before we send it.
+      // (However, we don't do this for the HTTP "GET" and "POST" commands that we use to set up the tunnel.)
+      char* origCmd = cmd;
+      cmd = base64Encode(origCmd, strlen(cmd));
+      if (fVerbosityLevel >= 1) envir() << "\tThe request was base-64 encoded to: " << cmd << "\n\n";
+      delete[] origCmd;
+    }
+
+    if (write(cmd, strlen(cmd)) < 0) {
+      char const* errFmt = "%s write() failed: ";
+      unsigned const errLength = strlen(errFmt) + strlen(request->commandName());
+      char* err = new char[errLength];
+      sprintf(err, errFmt, request->commandName());
+      envir().setResultErrMsg(err);
+      delete[] err;
+      break;
+    }
+
+    // The command send succeeded, so enqueue the request record, so that its response (when it comes) can be handled.
+    // However, note that we do not expect a response to a POST command with RTSP-over-HTTP, so don't enqueue that.
+    int cseq = request->cseq();
+
+    if (fTunnelOverHTTPPortNum == 0 || strcmp(request->commandName(), "POST") != 0) {
+      fRequestsAwaitingResponse.enqueue(request);
+    } else {
+      delete request;
+    }
+
+    delete[] cmd;
+    return cseq;
+  } while (0);
+
+  // An error occurred, so call the response handler immediately (indicating the error):
+  delete[] cmd;
+  handleRequestError(request);
+  delete request;
+  return 0;
+}
+
+static char* createSessionString(char const* sessionId) {
+  char* sessionStr;
+  if (sessionId != NULL) {
+    sessionStr = new char[20+strlen(sessionId)];
+    sprintf(sessionStr, "Session: %s\r\n", sessionId);
+  } else {
+    sessionStr = strDup("");
+  }
+  return sessionStr;
+}
+
+// Add support for faster download thru "speed:" option on PLAY
+static char* createSpeedString(float speed) {
+  char buf[100];
+  if (speed == 1.0f ) {
+    // This is the default value; we don't need a "Speed:" header:
+    buf[0] = '\0';
+  } else {
+    sprintf(buf, "Speed: %.3f\r\n",speed);
+  }
+
+  return strDup(buf);
+}
+
+static char* createScaleString(float scale, float currentScale) {
+  char buf[100];
+  if (scale == 1.0f && currentScale == 1.0f) {
+    // This is the default value; we don't need a "Scale:" header:
+    buf[0] = '\0';
+  } else {
+    Locale l("C", Numeric);
+    sprintf(buf, "Scale: %f\r\n", scale);
+  }
+
+  return strDup(buf);
+}
+
+static char* createRangeString(double start, double end, char const* absStartTime, char const* absEndTime) {
+  char buf[100];
+
+  if (absStartTime != NULL) {
+    // Create a "Range:" header that specifies 'absolute' time values:
+
+    if (absEndTime == NULL) {
+      // There's no end time:
+      snprintf(buf, sizeof buf, "Range: clock=%s-\r\n", absStartTime);
+    } else {
+      // There's both a start and an end time; include them both in the "Range:" hdr
+      snprintf(buf, sizeof buf, "Range: clock=%s-%s\r\n", absStartTime, absEndTime);
+    }
+  } else {
+    // Create a "Range:" header that specifies relative (i.e., NPT) time values:
+
+    if (start < 0) {
+      // We're resuming from a PAUSE; there's no "Range:" header at all
+      buf[0] = '\0';
+    } else if (end < 0) {
+      // There's no end time:
+      Locale l("C", Numeric);
+      sprintf(buf, "Range: npt=%.3f-\r\n", start);
+    } else {
+      // There's both a start and an end time; include them both in the "Range:" hdr
+      Locale l("C", Numeric);
+      sprintf(buf, "Range: npt=%.3f-%.3f\r\n", start, end);
+    }
+  }
+
+  return strDup(buf);
+}
+
+Boolean RTSPClient::setRequestFields(RequestRecord* request,
+				     char*& cmdURL, Boolean& cmdURLWasAllocated,
+				     char const*& protocolStr,
+				     char*& extraHeaders, Boolean& extraHeadersWereAllocated
+				     ) {
+  // Set various fields that will appear in our outgoing request, depending upon the particular command that we are sending.
+
+  if (strcmp(request->commandName(), "DESCRIBE") == 0) {
+    extraHeaders = (char*)"Accept: application/sdp\r\n";
+  } else if (strcmp(request->commandName(), "OPTIONS") == 0) {
+    // If we're currently part of a session, create a "Session:" header (in case the server wants this to indicate
+    // client 'liveness); this makes up our 'extra headers':
+    extraHeaders = createSessionString(fLastSessionId);
+    extraHeadersWereAllocated = True;
+  } else if (strcmp(request->commandName(), "ANNOUNCE") == 0) {
+    extraHeaders = (char*)"Content-Type: application/sdp\r\n";
+  } else if (strcmp(request->commandName(), "SETUP") == 0) {
+    MediaSubsession& subsession = *request->subsession();
+    Boolean streamUsingTCP = (request->booleanFlags()&0x1) != 0;
+    Boolean streamOutgoing = (request->booleanFlags()&0x2) != 0;
+    Boolean forceMulticastOnUnspecified = (request->booleanFlags()&0x4) != 0;
+    
+    char const *prefix, *separator, *suffix;
+    constructSubsessionURL(subsession, prefix, separator, suffix);
+    
+    char const* transportFmt;
+    if (strcmp(subsession.protocolName(), "RTP") == 0) {
+      transportFmt = "Transport: RTP/AVP%s%s%s=%d-%d\r\n";
+    } else if (strcmp(subsession.protocolName(), "SRTP") == 0) {
+      transportFmt = "Transport: RTP/SAVP%s%s%s=%d-%d\r\n";
+    } else { // "UDP"
+      suffix = "";
+      transportFmt = "Transport: RAW/RAW/UDP%s%s%s=%d-%d\r\n";
+    }
+    
+    cmdURL = new char[strlen(prefix) + strlen(separator) + strlen(suffix) + 1];
+    cmdURLWasAllocated = True;
+    sprintf(cmdURL, "%s%s%s", prefix, separator, suffix);
+    
+    // Construct a "Transport:" header.
+    char const* transportTypeStr;
+    char const* modeStr = streamOutgoing ? ";mode=receive" : "";
+    // Note: I think the above is nonstandard, but DSS wants it this way
+    char const* portTypeStr;
+    portNumBits rtpNumber, rtcpNumber;
+    if (streamUsingTCP) { // streaming over the RTSP connection
+      transportTypeStr = "/TCP;unicast";
+      portTypeStr = ";interleaved";
+      rtpNumber = fTCPStreamIdCount++;
+      rtcpNumber = fTCPStreamIdCount++;
+    } else { // normal RTP streaming
+      unsigned connectionAddress = subsession.connectionEndpointAddress();
+      Boolean requestMulticastStreaming
+	= IsMulticastAddress(connectionAddress) || (connectionAddress == 0 && forceMulticastOnUnspecified);
+      transportTypeStr = requestMulticastStreaming ? ";multicast" : ";unicast";
+      portTypeStr = requestMulticastStreaming ? ";port" : ";client_port";
+      rtpNumber = subsession.clientPortNum();
+      if (rtpNumber == 0) {
+	envir().setResultMsg("Client port number unknown\n");
+	delete[] cmdURL;
+	return False;
+      }
+      rtcpNumber = subsession.rtcpIsMuxed() ? rtpNumber : rtpNumber + 1;
+    }
+    unsigned transportSize = strlen(transportFmt)
+      + strlen(transportTypeStr) + strlen(modeStr) + strlen(portTypeStr) + 2*5 /* max port len */;
+    char* transportStr = new char[transportSize];
+    sprintf(transportStr, transportFmt,
+	    transportTypeStr, modeStr, portTypeStr, rtpNumber, rtcpNumber);
+    
+    // When sending more than one "SETUP" request, include a "Session:" header in the 2nd and later commands:
+    char* sessionStr = createSessionString(fLastSessionId);
+    
+    // Optionally include a "Blocksize:" string:
+    char* blocksizeStr = createBlocksizeString(streamUsingTCP);
+
+    // Optionally include a "KeyMgmt:" string:
+    char* keyMgmtStr = createKeyMgmtString(cmdURL, subsession);
+
+    // The "Transport:", "Session:" (if present), "Blocksize:" (if present), and "KeyMgmt:" (if present)
+    // headers make up the 'extra headers':
+    extraHeaders = new char[transportSize + strlen(sessionStr) + strlen(blocksizeStr) + strlen(keyMgmtStr) + 1];
+    extraHeadersWereAllocated = True;
+    sprintf(extraHeaders, "%s%s%s%s", transportStr, sessionStr, blocksizeStr, keyMgmtStr);
+    delete[] transportStr; delete[] sessionStr; delete[] blocksizeStr; delete[] keyMgmtStr;
+  } else if (strcmp(request->commandName(), "GET") == 0 || strcmp(request->commandName(), "POST") == 0) {
+    // We will be sending a HTTP (not a RTSP) request.
+    // Begin by re-parsing our RTSP URL, to get the stream name (which we'll use as our 'cmdURL'
+    // in the subsequent request), and the server address (which we'll use in a "Host:" header):
+    char* username;
+    char* password;
+    NetAddress destAddress;
+    portNumBits urlPortNum;
+    if (!parseRTSPURL(fBaseURL, username, password, destAddress, urlPortNum, (char const**)&cmdURL)) return False;
+    if (cmdURL[0] == '\0') cmdURL = (char*)"/";
+    delete[] username;
+    delete[] password;
+    netAddressBits serverAddress = *(netAddressBits*)(destAddress.data());
+    AddressString serverAddressString(serverAddress);
+    
+    protocolStr = "HTTP/1.1";
+    
+    if (strcmp(request->commandName(), "GET") == 0) {
+      // Create a 'session cookie' string, using MD5:
+      struct {
+	struct timeval timestamp;
+	unsigned counter;
+      } seedData;
+      gettimeofday(&seedData.timestamp, NULL);
+      seedData.counter = ++fSessionCookieCounter;
+      our_MD5Data((unsigned char*)(&seedData), sizeof seedData, fSessionCookie);
+      // DSS seems to require that the 'session cookie' string be 22 bytes long:
+      fSessionCookie[23] = '\0';
+      
+      char const* const extraHeadersFmt =
+	"Host: %s\r\n"
+	"x-sessioncookie: %s\r\n"
+	"Accept: application/x-rtsp-tunnelled\r\n"
+	"Pragma: no-cache\r\n"
+	"Cache-Control: no-cache\r\n";
+      unsigned extraHeadersSize = strlen(extraHeadersFmt)
+	+ strlen(serverAddressString.val())
+	+ strlen(fSessionCookie);
+      extraHeaders = new char[extraHeadersSize];
+      extraHeadersWereAllocated = True;
+      sprintf(extraHeaders, extraHeadersFmt,
+	      serverAddressString.val(),
+	      fSessionCookie);
+    } else { // "POST"
+      char const* const extraHeadersFmt =
+	"Host: %s\r\n"
+	"x-sessioncookie: %s\r\n"
+	"Content-Type: application/x-rtsp-tunnelled\r\n"
+	"Pragma: no-cache\r\n"
+	"Cache-Control: no-cache\r\n"
+	"Content-Length: 32767\r\n"
+	"Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n";
+      unsigned extraHeadersSize = strlen(extraHeadersFmt)
+	+ strlen(serverAddressString.val())
+	+ strlen(fSessionCookie);
+      extraHeaders = new char[extraHeadersSize];
+      extraHeadersWereAllocated = True;
+      sprintf(extraHeaders, extraHeadersFmt,
+	      serverAddressString.val(),
+	      fSessionCookie);
+    }
+  } else { // "PLAY", "PAUSE", "TEARDOWN", "RECORD", "SET_PARAMETER", "GET_PARAMETER"
+    // First, make sure that we have a RTSP session in progress
+    if (fLastSessionId == NULL) {
+      envir().setResultMsg("No RTSP session is currently in progress\n");
+      return False;
+    }
+    
+    char const* sessionId;
+    float originalScale;
+    if (request->session() != NULL) {
+      // Session-level operation
+      cmdURL = (char*)sessionURL(*request->session());
+      
+      sessionId = fLastSessionId;
+      originalScale = request->session()->scale();
+    } else {
+      // Media-level operation
+      char const *prefix, *separator, *suffix;
+      constructSubsessionURL(*request->subsession(), prefix, separator, suffix);
+      cmdURL = new char[strlen(prefix) + strlen(separator) + strlen(suffix) + 1];
+      cmdURLWasAllocated = True;
+      sprintf(cmdURL, "%s%s%s", prefix, separator, suffix);
+      
+      sessionId = request->subsession()->sessionId();
+      originalScale = request->subsession()->scale();
+    }
+    
+    if (strcmp(request->commandName(), "PLAY") == 0) {
+      // Create possible "Session:", "Scale:", "Speed:", and "Range:" headers;
+      // these make up the 'extra headers':
+      char* sessionStr = createSessionString(sessionId);
+      char* scaleStr = createScaleString(request->scale(), originalScale);
+      float speed = request->session() != NULL ? request->session()->speed() : request->subsession()->speed();
+      char* speedStr = createSpeedString(speed);
+      char* rangeStr = createRangeString(request->start(), request->end(), request->absStartTime(), request->absEndTime());
+      extraHeaders = new char[strlen(sessionStr) + strlen(scaleStr) + strlen(speedStr) + strlen(rangeStr) + 1];
+      extraHeadersWereAllocated = True;
+      sprintf(extraHeaders, "%s%s%s%s", sessionStr, scaleStr, speedStr, rangeStr);
+      delete[] sessionStr; delete[] scaleStr; delete[] speedStr; delete[] rangeStr;
+    } else {
+      // Create a "Session:" header; this makes up our 'extra headers':
+      extraHeaders = createSessionString(sessionId);
+      extraHeadersWereAllocated = True;
+    }
+  }
+
+  return True;
+}
+
+Boolean RTSPClient::isRTSPClient() const {
+  return True;
+}
+
+void RTSPClient::resetTCPSockets() {
+  if (fInputSocketNum >= 0) {
+    RTPInterface::clearServerRequestAlternativeByteHandler(envir(), fInputSocketNum); // in case we were receiving RTP-over-TCP
+    envir().taskScheduler().disableBackgroundHandling(fInputSocketNum);
+    ::closeSocket(fInputSocketNum);
+    if (fOutputSocketNum != fInputSocketNum) {
+      envir().taskScheduler().disableBackgroundHandling(fOutputSocketNum);
+      ::closeSocket(fOutputSocketNum);
+    }
+  }
+  fInputSocketNum = fOutputSocketNum = -1;
+}
+
+void RTSPClient::resetResponseBuffer() {
+  fResponseBytesAlreadySeen = 0;
+  fResponseBufferBytesLeft = responseBufferSize;
+}
+
+int RTSPClient::openConnection() {
+  do {
+    // Set up a connection to the server.  Begin by parsing the URL:
+    
+    char* username;
+    char* password;
+    NetAddress destAddress;
+    portNumBits urlPortNum;
+    char const* urlSuffix;
+    if (!parseRTSPURL(fBaseURL, username, password, destAddress, urlPortNum, &urlSuffix)) break;
+    portNumBits destPortNum = fTunnelOverHTTPPortNum == 0 ? urlPortNum : fTunnelOverHTTPPortNum;
+    if (destPortNum == 322) useTLS(); // port 322 is a special case: "rtsps"
+
+    if (username != NULL || password != NULL) {
+      fCurrentAuthenticator.setUsernameAndPassword(username, password);
+      delete[] username;
+      delete[] password;
+    }
+    
+    // We don't yet have a TCP socket (or we used to have one, but it got closed).  Set it up now.
+    fInputSocketNum = setupStreamSocket(envir(), 0);
+    if (fInputSocketNum < 0) break;
+    ignoreSigPipeOnSocket(fInputSocketNum); // so that servers on the same host that get killed don't also kill us
+    if (fOutputSocketNum < 0) fOutputSocketNum = fInputSocketNum;
+    envir() << "Created new TCP socket " << fInputSocketNum << " for connection\n";
+      
+    // Connect to the remote endpoint:
+    fServerAddress = *(netAddressBits*)(destAddress.data());
+    int connectResult = connectToServer(fInputSocketNum, destPortNum);
+    if (connectResult < 0) break;
+    else if (connectResult > 0) {
+      if (fTLS.isNeeded) {
+	// We need to complete an additional TLS connection:
+	connectResult = fTLS.connect(fInputSocketNum);
+	if (connectResult < 0) break;
+	if (connectResult > 0 && fVerbosityLevel >= 1) envir() << "...TLS connection completed\n";
+      }
+
+      if (connectResult > 0 && fVerbosityLevel >= 1) envir() << "...local connection opened\n";
+    }
+
+    return connectResult;
+  } while (0);
+  
+  resetTCPSockets();
+  return -1;
+}
+
+int RTSPClient::connectToServer(int socketNum, portNumBits remotePortNum) {
+  MAKE_SOCKADDR_IN(remoteName, fServerAddress, htons(remotePortNum));
+  if (fVerbosityLevel >= 1) {
+    envir() << "Connecting to " << AddressString(remoteName).val() << ", port " << remotePortNum << " on socket " << socketNum << "...\n";
+  }
+  if (connect(socketNum, (struct sockaddr*) &remoteName, sizeof remoteName) != 0) {
+    int const err = envir().getErrno();
+    if (err == EINPROGRESS || err == EWOULDBLOCK) {
+      // The connection is pending; we'll need to handle it later.  Wait for our socket to be 'writable', or have an exception.
+      envir().taskScheduler().setBackgroundHandling(socketNum, SOCKET_WRITABLE|SOCKET_EXCEPTION,
+						    (TaskScheduler::BackgroundHandlerProc*)&connectionHandler, this);
+      return 0;
+    }
+    envir().setResultErrMsg("connect() failed: ");
+    if (fVerbosityLevel >= 1) envir() << "..." << envir().getResultMsg() << "\n";
+    return -1;
+  }
+
+  // The connection succeeded.  Arrange to handle responses to requests sent on it:
+  envir().taskScheduler().setBackgroundHandling(fInputSocketNum, SOCKET_READABLE|SOCKET_EXCEPTION,
+						(TaskScheduler::BackgroundHandlerProc*)&incomingDataHandler, this);
+
+  return 1;
+}
+
+char* RTSPClient::createAuthenticatorString(char const* cmd, char const* url) {
+  Authenticator& auth = fCurrentAuthenticator; // alias, for brevity
+  if (auth.realm() != NULL && auth.username() != NULL && auth.password() != NULL) {
+    // We have a filled-in authenticator, so use it:
+    char* authenticatorStr;
+    if (auth.nonce() != NULL) { // Digest authentication
+      char const* const authFmt =
+	"Authorization: Digest username=\"%s\", realm=\"%s\", "
+	"nonce=\"%s\", uri=\"%s\", response=\"%s\"\r\n";
+      char const* response = auth.computeDigestResponse(cmd, url);
+      unsigned authBufSize = strlen(authFmt)
+	+ strlen(auth.username()) + strlen(auth.realm())
+	+ strlen(auth.nonce()) + strlen(url) + strlen(response);
+      authenticatorStr = new char[authBufSize];
+      sprintf(authenticatorStr, authFmt,
+	      auth.username(), auth.realm(),
+	      auth.nonce(), url, response);
+      auth.reclaimDigestResponse(response);
+    } else { // Basic authentication
+      char const* const authFmt = "Authorization: Basic %s\r\n";
+
+      unsigned usernamePasswordLength = strlen(auth.username()) + 1 + strlen(auth.password());
+      char* usernamePassword = new char[usernamePasswordLength+1];
+      sprintf(usernamePassword, "%s:%s", auth.username(), auth.password());
+
+      char* response = base64Encode(usernamePassword, usernamePasswordLength);
+      unsigned const authBufSize = strlen(authFmt) + strlen(response) + 1;
+      authenticatorStr = new char[authBufSize];
+      sprintf(authenticatorStr, authFmt, response);
+      delete[] response; delete[] usernamePassword;
+    }
+
+    return authenticatorStr;
+  }
+
+  // We don't have a (filled-in) authenticator.
+  return strDup("");
+}
+
+char* RTSPClient::createBlocksizeString(Boolean streamUsingTCP) {
+  char* blocksizeStr;
+  u_int16_t maxPacketSize = desiredMaxIncomingPacketSize;
+
+  // Allow for the RTP header (if streaming over TCP)
+  // or the IP/UDP/RTP headers (if streaming over UDP):
+  u_int16_t const headerAllowance = streamUsingTCP ? 12 : 50/*conservative*/;
+  if (maxPacketSize < headerAllowance) {
+    maxPacketSize = 0;
+  } else {
+    maxPacketSize -= headerAllowance;
+  }
+
+  if (maxPacketSize > 0) {
+    blocksizeStr = new char[25]; // more than enough space
+    sprintf(blocksizeStr, "Blocksize: %u\r\n", maxPacketSize);
+  } else {
+    blocksizeStr = strDup("");
+  }
+  return blocksizeStr;
+}
+
+char* RTSPClient::createKeyMgmtString(char const* url, MediaSubsession const& subsession) {
+  char* keyMgmtStr;
+  MIKEYState* mikeyState;
+  u_int8_t* mikeyMessage;
+  unsigned mikeyMessageSize;
+
+  if ((mikeyState = subsession.getMIKEYState()) == NULL ||
+      (mikeyMessage = mikeyState->generateMessage(mikeyMessageSize)) == NULL) {
+    keyMgmtStr = strDup("");
+  } else {
+    char const* keyMgmtFmt = "KeyMgmt: prot=mikey; uri=\"%s\"; data=\"%s\"\r\n";
+    char* base64EncodedData = base64Encode((char*)mikeyMessage, mikeyMessageSize);
+    unsigned keyMgmtSize = strlen(keyMgmtFmt)
+      + strlen(url) + strlen(base64EncodedData);
+    keyMgmtStr = new char[keyMgmtSize];
+    sprintf(keyMgmtStr, keyMgmtFmt,
+	    url, base64EncodedData);
+    delete[] base64EncodedData;
+  }
+
+  return keyMgmtStr;
+}
+
+void RTSPClient::handleRequestError(RequestRecord* request) {
+  int resultCode = -envir().getErrno();
+  if (resultCode == 0) {
+    // Choose some generic error code instead:
+#if defined(__WIN32__) || defined(_WIN32) || defined(_QNX4)
+    resultCode = -WSAENOTCONN;
+#else
+    resultCode = -ENOTCONN;
+#endif
+  }
+  if (request->handler() != NULL) (*request->handler())(this, resultCode, strDup(envir().getResultMsg()));
+}
+
+Boolean RTSPClient
+::parseResponseCode(char const* line, unsigned& responseCode, char const*& responseString) {
+  if (sscanf(line, "RTSP/%*s%u", &responseCode) != 1 &&
+      sscanf(line, "HTTP/%*s%u", &responseCode) != 1) return False;
+  // Note: We check for HTTP responses as well as RTSP responses, both in order to setup RTSP-over-HTTP tunneling,
+  // and so that we get back a meaningful error if the client tried to mistakenly send a RTSP command to a HTTP-only server.
+
+  // Use everything after the RTSP/* (or HTTP/*) as the response string:
+  responseString = line;
+  while (responseString[0] != '\0' && responseString[0] != ' '  && responseString[0] != '\t') ++responseString;
+  while (responseString[0] != '\0' && (responseString[0] == ' '  || responseString[0] == '\t')) ++responseString; // skip whitespace
+
+  return True;
+}
+
+void RTSPClient::handleIncomingRequest() {
+  // Parse the request string into command name and 'CSeq', then 'handle' the command (by responding that we don't support it):
+  char cmdName[RTSP_PARAM_STRING_MAX];
+  char urlPreSuffix[RTSP_PARAM_STRING_MAX];
+  char urlSuffix[RTSP_PARAM_STRING_MAX];
+  char cseq[RTSP_PARAM_STRING_MAX];
+  char sessionId[RTSP_PARAM_STRING_MAX];
+  unsigned contentLength;
+  if (!parseRTSPRequestString(fResponseBuffer, fResponseBytesAlreadySeen,
+			      cmdName, sizeof cmdName,
+			      urlPreSuffix, sizeof urlPreSuffix,
+			      urlSuffix, sizeof urlSuffix,
+			      cseq, sizeof cseq,
+			      sessionId, sizeof sessionId,
+			      contentLength)) {
+    return;
+  } else {
+    if (fVerbosityLevel >= 1) {
+      envir() << "Received incoming RTSP request: " << fResponseBuffer << "\n";
+    }
+    char tmpBuf[2*RTSP_PARAM_STRING_MAX];
+    snprintf(tmpBuf, sizeof tmpBuf,
+             "RTSP/1.0 405 Method Not Allowed\r\nCSeq: %s\r\n\r\n", cseq);
+    write(tmpBuf, strlen(tmpBuf));
+  }
+}
+
+Boolean RTSPClient::checkForHeader(char const* line, char const* headerName, unsigned headerNameLength, char const*& headerParams) {
+  if (_strncasecmp(line, headerName, headerNameLength) != 0) return False;
+
+  // The line begins with the desired header name.  Trim off any whitespace, and return the header parameters:
+  unsigned paramIndex = headerNameLength;
+  while (line[paramIndex] != '\0' && (line[paramIndex] == ' ' || line[paramIndex] == '\t')) ++paramIndex;
+  if (line[paramIndex] == '\0') return False; // the header is assumed to be bad if it has no parameters
+
+  headerParams = &line[paramIndex];
+  return True;
+}
+
+Boolean RTSPClient::parseTransportParams(char const* paramsStr,
+					 char*& serverAddressStr, portNumBits& serverPortNum,
+					 unsigned char& rtpChannelId, unsigned char& rtcpChannelId) {
+  // Initialize the return parameters to 'not found' values:
+  serverAddressStr = NULL;
+  serverPortNum = 0;
+  rtpChannelId = rtcpChannelId = 0xFF;
+  if (paramsStr == NULL) return False;  
+
+  char* foundServerAddressStr = NULL;
+  Boolean foundServerPortNum = False;
+  portNumBits clientPortNum = 0;
+  Boolean foundClientPortNum = False;
+  Boolean foundChannelIds = False;
+  unsigned rtpCid, rtcpCid;
+  Boolean isMulticast = True; // by default
+  char* foundDestinationStr = NULL;
+  portNumBits multicastPortNumRTP, multicastPortNumRTCP;
+  Boolean foundMulticastPortNum = False;
+
+  // Run through each of the parameters, looking for ones that we handle:
+  char const* fields = paramsStr;
+  char* field = strDupSize(fields);
+  while (sscanf(fields, "%[^;]", field) == 1) {
+    if (sscanf(field, "server_port=%hu", &serverPortNum) == 1) {
+      foundServerPortNum = True;
+    } else if (sscanf(field, "client_port=%hu", &clientPortNum) == 1) {
+      foundClientPortNum = True;
+    } else if (_strncasecmp(field, "source=", 7) == 0) {
+      delete[] foundServerAddressStr;
+      foundServerAddressStr = strDup(field+7);
+    } else if (sscanf(field, "interleaved=%u-%u", &rtpCid, &rtcpCid) == 2) {
+      rtpChannelId = (unsigned char)rtpCid;
+      rtcpChannelId = (unsigned char)rtcpCid;
+      foundChannelIds = True;
+    } else if (strcmp(field, "unicast") == 0) {
+      isMulticast = False;
+    } else if (_strncasecmp(field, "destination=", 12) == 0) {
+      delete[] foundDestinationStr;
+      foundDestinationStr = strDup(field+12);
+    } else if (sscanf(field, "port=%hu-%hu", &multicastPortNumRTP, &multicastPortNumRTCP) == 2 ||
+	       sscanf(field, "port=%hu", &multicastPortNumRTP) == 1) {
+      foundMulticastPortNum = True;
+    }
+
+    fields += strlen(field);
+    while (fields[0] == ';') ++fields; // skip over all leading ';' chars
+    if (fields[0] == '\0') break;
+  }
+  delete[] field;
+
+  // If we're multicast, and have a "destination=" (multicast) address, then use this
+  // as the 'server' address (because some weird servers don't specify the multicast
+  // address earlier, in the "DESCRIBE" response's SDP:
+  if (isMulticast && foundDestinationStr != NULL && foundMulticastPortNum) {
+    delete[] foundServerAddressStr;
+    serverAddressStr = foundDestinationStr;
+    serverPortNum = multicastPortNumRTP;
+    return True;
+  }
+  delete[] foundDestinationStr;
+
+  // We have a valid "Transport:" header if any of the following are true:
+  //   - We saw a "interleaved=" field, indicating RTP/RTCP-over-TCP streaming, or
+  //   - We saw a "server_port=" field, or
+  //   - We saw a "client_port=" field.
+  //     If we didn't also see a "server_port=" field, then the server port is assumed to be the same as the client port.
+  if (foundChannelIds || foundServerPortNum || foundClientPortNum) {
+    if (foundClientPortNum && !foundServerPortNum) {
+      serverPortNum = clientPortNum;
+    }
+    serverAddressStr = foundServerAddressStr;
+    return True;
+  }
+
+  delete[] foundServerAddressStr;
+  return False;
+}
+
+Boolean RTSPClient::parseScaleParam(char const* paramStr, float& scale) {
+  Locale l("C", Numeric);
+  return sscanf(paramStr, "%f", &scale) == 1;
+}
+
+Boolean RTSPClient::parseSpeedParam(char const* paramStr, float& speed) {
+  Locale l("C", Numeric);
+  return sscanf(paramStr, "%f", &speed) >= 1;
+}
+
+Boolean RTSPClient::parseRTPInfoParams(char const*& paramsStr, u_int16_t& seqNum, u_int32_t& timestamp) {
+  if (paramsStr == NULL || paramsStr[0] == '\0') return False;
+  while (paramsStr[0] == ',') ++paramsStr;
+
+  // "paramsStr" now consists of a ';'-separated list of parameters, ending with ',' or '\0'.
+  char* field = strDupSize(paramsStr);
+
+  Boolean sawSeq = False, sawRtptime = False;
+  while (sscanf(paramsStr, "%[^;,]", field) == 1) {
+    if (sscanf(field, "seq=%hu", &seqNum) == 1) {
+      sawSeq = True;
+    } else if (sscanf(field, "rtptime=%u", &timestamp) == 1) {
+      sawRtptime = True;
+    }
+
+    paramsStr += strlen(field);
+    if (paramsStr[0] == '\0' || paramsStr[0] == ',') break;
+    // ASSERT: paramsStr[0] == ';'
+    ++paramsStr; // skip over the ';'
+  }
+
+  delete[] field;
+  // For the "RTP-Info:" parameters to be useful to us, we need to have seen both the "seq=" and "rtptime=" parameters:
+  return sawSeq && sawRtptime;
+}
+
+Boolean RTSPClient::handleSETUPResponse(MediaSubsession& subsession, char const* sessionParamsStr, char const* transportParamsStr,
+                                        Boolean streamUsingTCP) {
+  char* sessionId = new char[responseBufferSize]; // ensures we have enough space
+  Boolean success = False;
+  do {
+    // Check for a session id:
+    if (sessionParamsStr == NULL || sscanf(sessionParamsStr, "%[^;]", sessionId) != 1) {
+      envir().setResultMsg("Missing or bad \"Session:\" header");
+      break;
+    }
+    subsession.setSessionId(sessionId);
+    delete[] fLastSessionId; fLastSessionId = strDup(sessionId);
+
+    // Also look for an optional "; timeout = " parameter following this:
+    char const* afterSessionId = sessionParamsStr + strlen(sessionId);
+    int timeoutVal;
+    if (sscanf(afterSessionId, "; timeout = %d", &timeoutVal) == 1) {
+      fSessionTimeoutParameter = timeoutVal;
+    }
+
+    // Parse the "Transport:" header parameters:
+    char* serverAddressStr;
+    portNumBits serverPortNum;
+    unsigned char rtpChannelId, rtcpChannelId;
+    if (!parseTransportParams(transportParamsStr, serverAddressStr, serverPortNum, rtpChannelId, rtcpChannelId)) {
+      envir().setResultMsg("Missing or bad \"Transport:\" header");
+      break;
+    }
+    delete[] subsession.connectionEndpointName();
+    subsession.connectionEndpointName() = serverAddressStr;
+    subsession.serverPortNum = serverPortNum;
+    subsession.rtpChannelId = rtpChannelId;
+    subsession.rtcpChannelId = rtcpChannelId;
+
+    if (streamUsingTCP) {
+      // Tell the subsession to receive RTP (and send/receive RTCP) over the RTSP stream:
+      if (subsession.rtpSource() != NULL) {
+	subsession.rtpSource()->setStreamSocket(fInputSocketNum, subsession.rtpChannelId);
+	  // So that we continue to receive & handle RTSP commands and responses from the server
+	subsession.rtpSource()->enableRTCPReports() = False;
+	  // To avoid confusing the server (which won't start handling RTP/RTCP-over-TCP until "PLAY"), don't send RTCP "RR"s yet
+	increaseReceiveBufferTo(envir(), fInputSocketNum, 50*1024);
+      }
+      if (subsession.rtcpInstance() != NULL) subsession.rtcpInstance()->setStreamSocket(fInputSocketNum, subsession.rtcpChannelId);
+      RTPInterface::setServerRequestAlternativeByteHandler(envir(), fInputSocketNum, handleAlternativeRequestByte, this);
+    } else {
+      // Normal case.
+      // Set the RTP and RTCP sockets' destination address and port from the information in the SETUP response (if present):
+      netAddressBits destAddress = subsession.connectionEndpointAddress();
+      if (destAddress == 0) destAddress = fServerAddress;
+      subsession.setDestinations(destAddress);
+    }
+
+    success = True;
+  } while (0);
+
+  delete[] sessionId;
+  return success;
+}
+
+Boolean RTSPClient::handlePLAYResponse(MediaSession* session, MediaSubsession* subsession,
+                                       char const* scaleParamsStr, char const* speedParamsStr,
+                                       char const* rangeParamsStr, char const* rtpInfoParamsStr) {
+  Boolean scaleOK = False, rangeOK = False, speedOK = False;
+  do {
+    if (session != NULL) {
+      // The command was on the whole session
+      if (scaleParamsStr != NULL && !parseScaleParam(scaleParamsStr, session->scale())) break;
+      scaleOK = True;
+      if (speedParamsStr != NULL && !parseSpeedParam(speedParamsStr, session->speed())) break;
+      speedOK = True;
+      Boolean startTimeIsNow;
+      if (rangeParamsStr != NULL &&
+	  !parseRangeParam(rangeParamsStr,
+               session->playStartTime(), session->playEndTime(),
+               session->_absStartTime(), session->_absEndTime(),
+			   startTimeIsNow)) break;
+      rangeOK = True;
+
+      MediaSubsessionIterator iter(*session);
+      MediaSubsession* subsession;
+      while ((subsession = iter.next()) != NULL) {
+	u_int16_t seqNum; u_int32_t timestamp;
+	subsession->rtpInfo.infoIsNew = False;
+	if (parseRTPInfoParams(rtpInfoParamsStr, seqNum, timestamp)) {
+	  subsession->rtpInfo.seqNum = seqNum;
+	  subsession->rtpInfo.timestamp = timestamp;
+	  subsession->rtpInfo.infoIsNew = True;
+	}
+
+	if (subsession->rtpSource() != NULL) subsession->rtpSource()->enableRTCPReports() = True; // start sending RTCP "RR"s now
+      }
+    } else {
+      // The command was on a subsession
+      if (scaleParamsStr != NULL && !parseScaleParam(scaleParamsStr, subsession->scale())) break;
+      scaleOK = True;
+      if (speedParamsStr != NULL && !parseSpeedParam(speedParamsStr, subsession->speed())) break;
+      speedOK = True;
+      Boolean startTimeIsNow;
+      if (rangeParamsStr != NULL &&
+	  !parseRangeParam(rangeParamsStr,
+               subsession->_playStartTime(), subsession->_playEndTime(),
+               subsession->_absStartTime(), subsession->_absEndTime(),
+			   startTimeIsNow)) break;
+      rangeOK = True;
+
+      u_int16_t seqNum; u_int32_t timestamp;
+      subsession->rtpInfo.infoIsNew = False;
+      if (parseRTPInfoParams(rtpInfoParamsStr, seqNum, timestamp)) {
+    subsession->rtpInfo.seqNum = seqNum;
+    subsession->rtpInfo.timestamp = timestamp;
+    subsession->rtpInfo.infoIsNew = True;
+      }
+
+      if (subsession->rtpSource() != NULL) subsession->rtpSource()->enableRTCPReports() = True; // start sending RTCP "RR"s now
+    }
+
+    return True;
+  } while (0);
+
+  // An error occurred:
+  if (!scaleOK) {
+    envir().setResultMsg("Bad \"Scale:\" header");
+  } else if (!speedOK) {
+    envir().setResultMsg("Bad \"Speed:\" header");
+  } else if (!rangeOK) {
+    envir().setResultMsg("Bad \"Range:\" header");
+  } else {
+    envir().setResultMsg("Bad \"RTP-Info:\" header");
+  }
+  return False;
+}
+
+Boolean RTSPClient::handleTEARDOWNResponse(MediaSession& /*session*/, MediaSubsession& /*subsession*/) {
+  // Because we don't expect to always get a response to "TEARDOWN", we don't need to do anything if we do get one:
+  return True;
+}
+
+Boolean RTSPClient::handleGET_PARAMETERResponse(char const* parameterName, char*& resultValueString, char* resultValueStringEnd) {
+  do {
+    // If "parameterName" is non-empty, it may be (possibly followed by ':' and whitespace) at the start of the result string:
+    if (parameterName != NULL && parameterName[0] != '\0') {
+      if (parameterName[1] == '\0') break; // sanity check; there should have been \r\n at the end of "parameterName"
+
+      unsigned parameterNameLen = strlen(parameterName);
+      // ASSERT: parameterNameLen >= 2;
+      parameterNameLen -= 2; // because of the trailing \r\n
+      if (resultValueString + parameterNameLen > resultValueStringEnd) break; // not enough space
+      if (parameterNameLen > 0 && _strncasecmp(resultValueString, parameterName, parameterNameLen) == 0) {
+	resultValueString += parameterNameLen;
+	// ASSERT: resultValueString <= resultValueStringEnd
+	if (resultValueString == resultValueStringEnd) break;
+
+	if (resultValueString[0] == ':') ++resultValueString;
+	while (resultValueString < resultValueStringEnd
+	       && (resultValueString[0] == ' ' || resultValueString[0] == '\t')) {
+	  ++resultValueString;
+	}
+      }
+    }
+
+    // The rest of "resultValueStr" should be our desired result, but first trim off any \r and/or \n characters at the end:
+    char saved = *resultValueStringEnd;
+    *resultValueStringEnd = '\0';
+    unsigned resultLen = strlen(resultValueString);
+    *resultValueStringEnd = saved;
+    
+    while (resultLen > 0 && (resultValueString[resultLen-1] == '\r' || resultValueString[resultLen-1] == '\n')) --resultLen;
+    resultValueString[resultLen] = '\0';
+
+    return True;
+  } while (0);
+
+  // An error occurred:
+  envir().setResultMsg("Bad \"GET_PARAMETER\" response");
+  return False;
+}
+
+Boolean RTSPClient::handleAuthenticationFailure(char const* paramsStr) {
+  if (paramsStr == NULL) return False; // There was no "WWW-Authenticate:" header; we can't proceed.
+
+  // Fill in "fCurrentAuthenticator" with the information from the "WWW-Authenticate:" header:
+  Boolean realmHasChanged = False; // by default
+  Boolean isStale = False; // by default
+  char* realm = strDupSize(paramsStr);
+  char* nonce = strDupSize(paramsStr);
+  char* stale = strDupSize(paramsStr);
+  Boolean success = True;
+  if (sscanf(paramsStr, "Digest realm=\"%[^\"]\", nonce=\"%[^\"]\", stale=%[a-zA-Z]", realm, nonce, stale) == 3) {
+    realmHasChanged = fCurrentAuthenticator.realm() == NULL || strcmp(fCurrentAuthenticator.realm(), realm) != 0;
+    isStale = _strncasecmp(stale, "true", 4) == 0;
+    fCurrentAuthenticator.setRealmAndNonce(realm, nonce);
+  } else if (sscanf(paramsStr, "Digest realm=\"%[^\"]\", nonce=\"%[^\"]\"", realm, nonce) == 2) {
+    realmHasChanged = fCurrentAuthenticator.realm() == NULL || strcmp(fCurrentAuthenticator.realm(), realm) != 0;
+    fCurrentAuthenticator.setRealmAndNonce(realm, nonce);
+  } else if (sscanf(paramsStr, "Basic realm=\"%[^\"]\"", realm) == 1 && fAllowBasicAuthentication) {
+    realmHasChanged = fCurrentAuthenticator.realm() == NULL || strcmp(fCurrentAuthenticator.realm(), realm) != 0;
+    fCurrentAuthenticator.setRealmAndNonce(realm, NULL); // Basic authentication
+  } else {
+    success = False; // bad "WWW-Authenticate:" header
+  }
+  delete[] realm; delete[] nonce; delete[] stale;
+
+  if (success) {
+    if ((!realmHasChanged && !isStale) || fCurrentAuthenticator.username() == NULL || fCurrentAuthenticator.password() == NULL) {
+      // We already tried with the same realm (and a non-stale nonce),
+      // or don't have a username and/or password, so the new "WWW-Authenticate:" header
+      // information won't help us.  We remain unauthenticated.
+      success = False;
+    }
+  }
+
+  return success;
+}
+
+Boolean RTSPClient::resendCommand(RequestRecord* request) {
+  if (fVerbosityLevel >= 1) envir() << "Resending...\n";
+  if (request != NULL && strcmp(request->commandName(), "GET") != 0) request->cseq() = ++fCSeq;
+  return sendRequest(request) != 0;
+}
+
+char const* RTSPClient::sessionURL(MediaSession const& session) const {
+  char const* url = session.controlPath();
+  if (url == NULL || strcmp(url, "*") == 0) url = fBaseURL;
+
+  return url;
+}
+
+void RTSPClient::handleAlternativeRequestByte(void* rtspClient, u_int8_t requestByte) {
+  ((RTSPClient*)rtspClient)->handleAlternativeRequestByte1(requestByte);
+}
+
+void RTSPClient::handleAlternativeRequestByte1(u_int8_t requestByte) {
+  if (requestByte == 0xFF) {
+    // Hack: The new handler of the input TCP socket encountered an error reading it.  Indicate this:
+    handleResponseBytes(-1);
+  } else if (requestByte == 0xFE) {
+    // Another hack: The new handler of the input TCP socket no longer needs it, so take back control:
+    envir().taskScheduler().setBackgroundHandling(fInputSocketNum, SOCKET_READABLE|SOCKET_EXCEPTION,
+						  (TaskScheduler::BackgroundHandlerProc*)&incomingDataHandler, this);
+  } else {
+    // Normal case:
+    fResponseBuffer[fResponseBytesAlreadySeen] = requestByte;
+    handleResponseBytes(1);
+  }
+}
+
+static Boolean isAbsoluteURL(char const* url) {
+  // Assumption: "url" is absolute if it contains a ':', before any
+  // occurrence of '/'
+  while (*url != '\0' && *url != '/') {
+    if (*url == ':') return True;
+    ++url;
+  }
+
+  return False;
+}
+
+void RTSPClient::constructSubsessionURL(MediaSubsession const& subsession,
+					char const*& prefix,
+					char const*& separator,
+					char const*& suffix) {
+  // Figure out what the URL describing "subsession" will look like.
+  // The URL is returned in three parts: prefix; separator; suffix
+  //##### NOTE: This code doesn't really do the right thing if "sessionURL()"
+  // doesn't end with a "/", and "subsession.controlPath()" is relative.
+  // The right thing would have been to truncate "sessionURL()" back to the
+  // rightmost "/", and then add "subsession.controlPath()".
+  // In practice, though, each "DESCRIBE" response typically contains
+  // a "Content-Base:" header that consists of "sessionURL()" followed by
+  // a "/", in which case this code ends up giving the correct result.
+  // However, we should really fix this code to do the right thing, and
+  // also check for and use the "Content-Base:" header appropriately. #####
+  prefix = sessionURL(subsession.parentSession());
+  if (prefix == NULL) prefix = "";
+
+  suffix = subsession.controlPath();
+  if (suffix == NULL) suffix = "";
+
+  if (isAbsoluteURL(suffix)) {
+    prefix = separator = "";
+  } else {
+    unsigned prefixLen = strlen(prefix);
+    separator = (prefixLen == 0 || prefix[prefixLen-1] == '/' || suffix[0] == '/') ? "" : "/";
+  }
+}
+
+Boolean RTSPClient::setupHTTPTunneling1() {
+  // Set up RTSP-over-HTTP tunneling, as described in
+  //     http://mirror.informatimago.com/next/developer.apple.com/quicktime/icefloe/dispatch028.html
+  // and http://images.apple.com/br/quicktime/pdf/QTSS_Modules.pdf
+  if (fVerbosityLevel >= 1) {
+    envir() << "Requesting RTSP-over-HTTP tunneling (on port " << fTunnelOverHTTPPortNum << ")\n\n";
+  }
+
+  // Begin by sending a HTTP "GET", to set up the server->client link.  Continue when we handle the response:
+  return sendRequest(new RequestRecord(1, "GET", responseHandlerForHTTP_GET)) != 0;
+}
+
+void RTSPClient::responseHandlerForHTTP_GET(RTSPClient* rtspClient, int responseCode, char* responseString) {
+  if (rtspClient != NULL) rtspClient->responseHandlerForHTTP_GET1(responseCode, responseString);
+}
+
+void RTSPClient::responseHandlerForHTTP_GET1(int responseCode, char* responseString) {
+  RequestRecord* request;
+  do {
+    delete[] responseString; // we don't need it (but are responsible for deleting it)
+    if (responseCode != 0) break; // The HTTP "GET" failed.
+
+    // Having successfully set up (using the HTTP "GET" command) the server->client link, set up a second TCP connection
+    // (to the same server & port as before) for the client->server link.  All future output will be to this new socket.
+    fOutputSocketNum = setupStreamSocket(envir(), 0);
+    if (fOutputSocketNum < 0) break;
+    ignoreSigPipeOnSocket(fOutputSocketNum); // so that servers on the same host that killed don't also kill us
+
+    fHTTPTunnelingConnectionIsPending = True;
+    int connectResult = connectToServer(fOutputSocketNum, fTunnelOverHTTPPortNum);
+    if (connectResult < 0) break; // an error occurred
+    else if (connectResult == 0) {
+      // A connection is pending.  Continue setting up RTSP-over-HTTP when the connection completes.
+      // First, move the pending requests to the 'awaiting connection' queue:
+      while ((request = fRequestsAwaitingHTTPTunneling.dequeue()) != NULL) {
+	fRequestsAwaitingConnection.enqueue(request);
+      }
+      return;
+    }
+
+    // The connection succeeded.  Continue setting up RTSP-over-HTTP:
+    if (!setupHTTPTunneling2()) break;
+
+    // RTSP-over-HTTP tunneling succeeded.  Resume the pending request(s):
+    while ((request = fRequestsAwaitingHTTPTunneling.dequeue()) != NULL) {
+      sendRequest(request);
+    }
+    return;
+  } while (0);
+
+  // An error occurred.  Dequeue the pending request(s), and tell them about the error:
+  fHTTPTunnelingConnectionIsPending = False;
+  resetTCPSockets(); // do this now, in case an error handler deletes "this"
+  RequestQueue requestQueue(fRequestsAwaitingHTTPTunneling);
+  while ((request = requestQueue.dequeue()) != NULL) {
+    handleRequestError(request);
+    delete request;
+  }
+}
+
+Boolean RTSPClient::setupHTTPTunneling2() {
+  fHTTPTunnelingConnectionIsPending = False;
+
+  // Send a HTTP "POST", to set up the client->server link.  (Note that we won't see a reply to the "POST".)
+  return sendRequest(new RequestRecord(1, "POST", NULL)) != 0;
+}
+
+void RTSPClient::connectionHandler(void* instance, int /*mask*/) {
+  RTSPClient* client = (RTSPClient*)instance;
+  client->connectionHandler1();
+}
+
+void RTSPClient::connectionHandler1() {
+  // Restore normal handling on our sockets:
+  envir().taskScheduler().disableBackgroundHandling(fOutputSocketNum);
+  envir().taskScheduler().setBackgroundHandling(fInputSocketNum, SOCKET_READABLE|SOCKET_EXCEPTION,
+						(TaskScheduler::BackgroundHandlerProc*)&incomingDataHandler, this);
+
+  // Move all requests awaiting connection into a new, temporary queue, to clear "fRequestsAwaitingConnection"
+  // (so that "sendRequest()" doesn't get confused by "fRequestsAwaitingConnection" being nonempty, and enqueue them all over again).
+  RequestQueue tmpRequestQueue(fRequestsAwaitingConnection);
+  RequestRecord* request;
+
+  // Find out whether the connection succeeded or failed:
+  do {
+    int err = 0;
+    SOCKLEN_T len = sizeof err;
+    if (getsockopt(fInputSocketNum, SOL_SOCKET, SO_ERROR, (char*)&err, &len) < 0 || err != 0) {
+      envir().setResultErrMsg("Connection to server failed: ", err);
+      if (fVerbosityLevel >= 1) envir() << "..." << envir().getResultMsg() << "\n";
+      break;
+    }
+
+    // The connection succeeded.  If the connection came about from an attempt to set up RTSP-over-HTTP, finish this now:
+    if (fHTTPTunnelingConnectionIsPending && !setupHTTPTunneling2()) break;
+
+    if (fTLS.isNeeded) {
+      // We need to complete an additional TLS connection:
+      int tlsConnectResult = fTLS.connect(fInputSocketNum);
+      if (tlsConnectResult < 0) break; // error in TLS connection
+      if (tlsConnectResult > 0 && fVerbosityLevel >= 1) envir() << "...TLS connection completed\n";
+      if (tlsConnectResult == 0) {
+	// The connection is still pending.  Continue deferring...
+	while ((request = tmpRequestQueue.dequeue()) != NULL) {
+	  fRequestsAwaitingConnection.enqueue(request);
+	}
+	return;
+      }
+    }
+
+    // The connection is complete.  Resume sending all pending requests:
+    if (fVerbosityLevel >= 1) envir() << "...remote connection opened\n";
+    while ((request = tmpRequestQueue.dequeue()) != NULL) {
+      sendRequest(request);
+    }
+    return;
+  } while (0);
+
+  // An error occurred.  Tell all pending requests about the error:
+  resetTCPSockets(); // do this now, in case an error handler deletes "this"
+  while ((request = tmpRequestQueue.dequeue()) != NULL) {
+    handleRequestError(request);
+    delete request;
+  }
+}
+
+void RTSPClient::incomingDataHandler(void* instance, int /*mask*/) {
+  RTSPClient* client = (RTSPClient*)instance;
+  client->incomingDataHandler1();
+}
+
+void RTSPClient::incomingDataHandler1() {
+  int bytesRead = read((u_int8_t*)&fResponseBuffer[fResponseBytesAlreadySeen], fResponseBufferBytesLeft);
+  handleResponseBytes(bytesRead);
+}
+
+static char* getLine(char* startOfLine) {
+  // returns the start of the next line, or NULL if none.  Note that this modifies the input string to add '\0' characters.
+  for (char* ptr = startOfLine; *ptr != '\0'; ++ptr) {
+    // Check for the end of line: \r\n (but also accept \r or \n by itself):
+    if (*ptr == '\r' || *ptr == '\n') {
+      // We found the end of the line
+      if (*ptr == '\r') {
+	*ptr++ = '\0';
+	if (*ptr == '\n') ++ptr;
+      } else {
+        *ptr++ = '\0';
+      }
+      return ptr;
+    }
+  }
+
+  return NULL;
+}
+
+void RTSPClient::handleResponseBytes(int newBytesRead) {
+  do {
+    if (newBytesRead >= 0 && (unsigned)newBytesRead < fResponseBufferBytesLeft) break; // data was read OK; process it below
+
+    if (newBytesRead >= (int)fResponseBufferBytesLeft) {
+      // We filled up our response buffer.  Treat this as an error (for the first response handler):
+      envir().setResultMsg("RTSP response was truncated. Increase \"RTSPClient::responseBufferSize\"");
+    }
+
+    // An error occurred while reading our TCP socket.  Call all pending response handlers, indicating this error.
+    // (However, the "RTSP response was truncated" error is applied to the first response handler only.)
+    resetResponseBuffer();
+    RequestRecord* request;
+    if (newBytesRead > 0) { // The "RTSP response was truncated" error
+      if ((request = fRequestsAwaitingResponse.dequeue()) != NULL) {
+	handleRequestError(request);
+	delete request;
+      }
+    } else {
+      RequestQueue requestQueue(fRequestsAwaitingResponse);
+      resetTCPSockets(); // do this now, in case an error handler deletes "this"
+
+      while ((request = requestQueue.dequeue()) != NULL) {
+	handleRequestError(request);
+	delete request;
+      }
+    }
+    return;
+  } while (0);
+
+  fResponseBufferBytesLeft -= newBytesRead;
+  fResponseBytesAlreadySeen += newBytesRead;
+  fResponseBuffer[fResponseBytesAlreadySeen] = '\0';
+  if (fVerbosityLevel >= 1 && newBytesRead > 1) envir() << "Received " << newBytesRead << " new bytes of response data.\n";
+  
+  unsigned numExtraBytesAfterResponse = 0;
+  Boolean responseSuccess = False; // by default
+  do {
+    // Data was read OK.  Look through the data that we've read so far, to see if it contains <CR><LF><CR><LF>.
+    // (If not, wait for more data to arrive.)
+    Boolean endOfHeaders = False;
+    char const* ptr = fResponseBuffer;
+    if (fResponseBytesAlreadySeen > 3) {
+      char const* const ptrEnd = &fResponseBuffer[fResponseBytesAlreadySeen-3];
+      while (ptr < ptrEnd) {
+	if (*ptr++ == '\r' && *ptr++ == '\n' && *ptr++ == '\r' && *ptr++ == '\n') {
+	  // This is it
+	  endOfHeaders = True;
+	  break;
+	}
+      }
+    }
+    
+    if (!endOfHeaders) return; // subsequent reads will be needed to get the complete response
+    
+    // Now that we have the complete response headers (ending with <CR><LF><CR><LF>), parse them to get the response code, CSeq,
+    // and various other header parameters.  To do this, we first make a copy of the received header data, because we'll be
+    // modifying it by adding '\0' bytes.
+    char* headerDataCopy;
+    unsigned responseCode = 200;
+    char const* responseStr = NULL;
+    RequestRecord* foundRequest = NULL;
+    char const* sessionParamsStr = NULL;
+    char const* transportParamsStr = NULL;
+    char const* scaleParamsStr = NULL;
+    char const* speedParamsStr = NULL;
+    char const* rangeParamsStr = NULL;
+    char const* rtpInfoParamsStr = NULL;
+    char const* wwwAuthenticateParamsStr = NULL;
+    char const* publicParamsStr = NULL;
+    char* bodyStart = NULL;
+    unsigned numBodyBytes = 0;
+    responseSuccess = False;
+    do {
+      headerDataCopy = new char[responseBufferSize];
+      strncpy(headerDataCopy, fResponseBuffer, fResponseBytesAlreadySeen);
+      headerDataCopy[fResponseBytesAlreadySeen] = '\0';
+      
+      char* lineStart;
+      char* nextLineStart = headerDataCopy;
+      do {
+	lineStart = nextLineStart;
+	nextLineStart = getLine(lineStart);
+      } while (lineStart[0] == '\0' && nextLineStart != NULL); // skip over any blank lines at the start
+      if (!parseResponseCode(lineStart, responseCode, responseStr)) {
+	// This does not appear to be a RTSP response; perhaps it's a RTSP request instead?
+	handleIncomingRequest();
+	break; // we're done with this data
+      }
+      
+      // Scan through the headers, handling the ones that we're interested in:
+      Boolean reachedEndOfHeaders;
+      unsigned cseq = 0;
+      unsigned contentLength = 0;
+      
+      while (1) {
+	reachedEndOfHeaders = True; // by default; may get changed below
+	lineStart = nextLineStart;
+	if (lineStart == NULL) break;
+	
+	nextLineStart = getLine(lineStart);
+	if (lineStart[0] == '\0') break; // this is a blank line
+	reachedEndOfHeaders = False;
+	
+	char const* headerParamsStr; 
+	if (checkForHeader(lineStart, "CSeq:", 5, headerParamsStr)) {
+	  if (sscanf(headerParamsStr, "%u", &cseq) != 1 || cseq <= 0) {
+	    envir().setResultMsg("Bad \"CSeq:\" header: \"", lineStart, "\"");
+	    break;
+	  }
+	  // Find the handler function for "cseq":
+	  RequestRecord* request;
+	  while ((request = fRequestsAwaitingResponse.dequeue()) != NULL) {
+	    if (request->cseq() < cseq) { // assumes that the CSeq counter will never wrap around
+	      // We never received (and will never receive) a response for this handler, so delete it:
+	      if (fVerbosityLevel >= 1 && strcmp(request->commandName(), "POST") != 0) {
+		envir() << "WARNING: The server did not respond to our \"" << request->commandName() << "\" request (CSeq: "
+			<< request->cseq() << ").  The server appears to be buggy (perhaps not handling pipelined requests properly).\n";
+	      }
+	      delete request;
+	    } else if (request->cseq() == cseq) {
+	      // This is the handler that we want. Remove its record, but remember it, so that we can later call its handler:
+	      foundRequest = request;
+	      break;
+	    } else { // request->cseq() > cseq
+	      // No handler was registered for this response, so ignore it.
+	      break;
+	    }
+	  }
+	} else if (checkForHeader(lineStart, "Content-Length:", 15, headerParamsStr)) {
+	  if (sscanf(headerParamsStr, "%u", &contentLength) != 1) {
+	    envir().setResultMsg("Bad \"Content-Length:\" header: \"", lineStart, "\"");
+	    break;
+	  }
+	} else if (checkForHeader(lineStart, "Content-Base:", 13, headerParamsStr)) {
+	  setBaseURL(headerParamsStr);
+	} else if (checkForHeader(lineStart, "Session:", 8, sessionParamsStr)) {
+	} else if (checkForHeader(lineStart, "Transport:", 10, transportParamsStr)) {
+	} else if (checkForHeader(lineStart, "Scale:", 6, scaleParamsStr)) {
+	} else if (checkForHeader(lineStart, "Speed:",
+// NOTE: Should you feel the need to modify this code,
+				  6,
+// please first email the "live-devel" mailing list
+				  speedParamsStr
+// (see http://live555.com/liveMedia/faq.html#mailing-list-address for details),
+				  )) {
+// to check whether your proposed modification is appropriate/correct,
+	} else if (checkForHeader(lineStart, "Range:",
+// and, if so, whether instead it could be included in
+				  6,
+// a future release of the "LIVE555 Streaming Media" software,
+				  rangeParamsStr
+// so that other projects that use the code could benefit (not just your own project).
+				  )) {
+	} else if (checkForHeader(lineStart, "RTP-Info:", 9, rtpInfoParamsStr)) {
+	} else if (checkForHeader(lineStart, "WWW-Authenticate:", 17, headerParamsStr)) {
+	  // If we've already seen a "WWW-Authenticate:" header, then we replace it with this new one only if
+	  // the new one specifies "Digest" authentication:
+	  if (wwwAuthenticateParamsStr == NULL || _strncasecmp(headerParamsStr, "Digest", 6) == 0) {
+	    wwwAuthenticateParamsStr = headerParamsStr;
+	  }
+	} else if (checkForHeader(lineStart, "Public:", 7, publicParamsStr)) {
+	} else if (checkForHeader(lineStart, "Allow:", 6, publicParamsStr)) {
+	  // Note: we accept "Allow:" instead of "Public:", so that "OPTIONS" requests made to HTTP servers will work.
+	} else if (checkForHeader(lineStart, "Location:", 9, headerParamsStr)) {
+	  setBaseURL(headerParamsStr);
+	} else if (checkForHeader(lineStart, "com.ses.streamID:", 17, headerParamsStr)) {
+	  // Replace the tail of the 'base URL' with the value of this header parameter:
+	  char* oldBaseURLTail = strrchr(fBaseURL, '/');
+	  if (oldBaseURLTail != NULL) {
+	    unsigned newBaseURLLen
+	      = (oldBaseURLTail - fBaseURL) + 8/* for "/stream=" */ + strlen(headerParamsStr);
+	    char* newBaseURL = new char[newBaseURLLen + 1];
+	        // Note: We couldn't use "asprintf()", because some compilers don't support it
+	    sprintf(newBaseURL, "%.*s/stream=%s",
+		     (int)(oldBaseURLTail - fBaseURL), fBaseURL, headerParamsStr);
+	    setBaseURL(newBaseURL);
+	    delete[] newBaseURL;
+	  }
+	} else if (checkForHeader(lineStart, "Connection:", 11, headerParamsStr)) {
+	  if (fTunnelOverHTTPPortNum == 0 && _strncasecmp(headerParamsStr, "Close", 5) == 0) {
+	    resetTCPSockets();
+	  }
+	}
+      }
+      if (!reachedEndOfHeaders) break; // an error occurred
+      
+      if (foundRequest == NULL) {
+	// Hack: The response didn't have a "CSeq:" header; assume it's for our most recent request:
+	foundRequest = fRequestsAwaitingResponse.dequeue();
+      }
+      
+      // If we saw a "Content-Length:" header, then make sure that we have the amount of data that it specified:
+      unsigned bodyOffset = nextLineStart == NULL ? fResponseBytesAlreadySeen : nextLineStart - headerDataCopy;
+      bodyStart = &fResponseBuffer[bodyOffset];
+      numBodyBytes = fResponseBytesAlreadySeen - bodyOffset;
+      if (contentLength > numBodyBytes) {
+	// We need to read more data.  First, make sure we have enough space for it:
+	unsigned numExtraBytesNeeded = contentLength - numBodyBytes;
+	unsigned remainingBufferSize = responseBufferSize - fResponseBytesAlreadySeen;
+	if (numExtraBytesNeeded > remainingBufferSize) {
+	  char tmpBuf[200];
+	  sprintf(tmpBuf, "Response buffer size (%d) is too small for \"Content-Length:\" %d (need a buffer size of >= %d bytes\n",
+		  responseBufferSize, contentLength, fResponseBytesAlreadySeen + numExtraBytesNeeded);
+	  envir().setResultMsg(tmpBuf);
+	  break;
+	}
+	
+	if (fVerbosityLevel >= 1) {
+	  envir() << "Have received " << fResponseBytesAlreadySeen << " total bytes of a "
+		  << (foundRequest != NULL ? foundRequest->commandName() : "(unknown)")
+		  << " RTSP response; awaiting " << numExtraBytesNeeded << " bytes more.\n";
+	}
+	delete[] headerDataCopy;
+	if (foundRequest != NULL) fRequestsAwaitingResponse.putAtHead(foundRequest);// put our request record back; we need it again
+	return; // We need to read more data
+      }
+      
+      // We now have a complete response (including all bytes specified by the "Content-Length:" header, if any).
+      char* responseEnd = bodyStart + contentLength;
+      numExtraBytesAfterResponse = &fResponseBuffer[fResponseBytesAlreadySeen] - responseEnd;
+
+      if (fVerbosityLevel >= 1) {
+	char saved = *responseEnd;
+	*responseEnd = '\0';
+	envir() << "Received a complete "
+		<< (foundRequest != NULL ? foundRequest->commandName() : "(unknown)")
+		<< " response:\n" << fResponseBuffer << "\n";
+	if (numExtraBytesAfterResponse > 0) envir() << "\t(plus " << numExtraBytesAfterResponse << " additional bytes)\n";
+	*responseEnd = saved;
+      }
+      
+      if (foundRequest != NULL) {
+	Boolean needToResendCommand = False; // by default...
+	if (responseCode == 200) {
+	  // Do special-case response handling for some commands:
+	  if (strcmp(foundRequest->commandName(), "SETUP") == 0) {
+        if (!handleSETUPResponse(*foundRequest->subsession(), sessionParamsStr, transportParamsStr, foundRequest->booleanFlags()&0x1)) break;
+	  } else if (strcmp(foundRequest->commandName(), "PLAY") == 0) {
+        if (!handlePLAYResponse(foundRequest->session(), foundRequest->subsession(), scaleParamsStr, speedParamsStr, rangeParamsStr, rtpInfoParamsStr)) break;
+	  } else if (strcmp(foundRequest->commandName(), "TEARDOWN") == 0) {
+	    if (!handleTEARDOWNResponse(*foundRequest->session(), *foundRequest->subsession())) break;
+	  } else if (strcmp(foundRequest->commandName(), "GET_PARAMETER") == 0) {
+	    if (!handleGET_PARAMETERResponse(foundRequest->contentStr(), bodyStart, responseEnd)) break;
+	  }
+	} else if (responseCode == 401 && handleAuthenticationFailure(wwwAuthenticateParamsStr)) {
+	  // We need to resend the command, with an "Authorization:" header:
+	  needToResendCommand = True;
+	  
+	  if (strcmp(foundRequest->commandName(), "GET") == 0) {
+	    // Note: If a HTTP "GET" command (for RTSP-over-HTTP tunneling) returns "401 Unauthorized", then we resend it
+	    // (with an "Authorization:" header), just as we would for a RTSP command.  However, we do so using a new TCP connection,
+	    // because some servers close the original connection after returning the "401 Unauthorized".
+	    resetTCPSockets(); // forces the opening of a new connection for the resent command
+	  }
+	} else if (responseCode == 301 || responseCode == 302) { // redirection
+	  resetTCPSockets(); // because we need to connect somewhere else next
+	  needToResendCommand = True;
+	}
+	
+	if (needToResendCommand) {
+	  resetResponseBuffer();
+	  (void)resendCommand(foundRequest);
+	  delete[] headerDataCopy;
+	  return; // without calling our response handler; the response to the resent command will do that
+	}
+      }
+      
+      responseSuccess = True;
+    } while (0);
+    
+    // If we have a handler function for this response, call it.
+    // But first, reset our response buffer, in case the handler goes to the event loop, and we end up getting called recursively:
+    if (numExtraBytesAfterResponse > 0) {
+      // An unusual case; usually due to having received pipelined responses.  Move the extra bytes to the front of the buffer:
+      char* responseEnd = &fResponseBuffer[fResponseBytesAlreadySeen - numExtraBytesAfterResponse];
+      
+      // But first: A hack to save a copy of the response 'body', in case it's needed below for "resultString":
+      numBodyBytes -= numExtraBytesAfterResponse;
+      if (numBodyBytes > 0) {
+	char saved = *responseEnd;
+	*responseEnd = '\0';
+	bodyStart = strDup(bodyStart);
+	*responseEnd = saved;
+      }
+      
+      memmove(fResponseBuffer, responseEnd, numExtraBytesAfterResponse);
+      fResponseBytesAlreadySeen = numExtraBytesAfterResponse;
+      fResponseBufferBytesLeft = responseBufferSize - numExtraBytesAfterResponse;
+      fResponseBuffer[numExtraBytesAfterResponse] = '\0';
+    } else {
+      resetResponseBuffer();
+    }
+    if (foundRequest != NULL && foundRequest->handler() != NULL) {
+      int resultCode;
+      char* resultString;
+      if (responseSuccess) {
+	if (responseCode == 200) {
+	  resultCode = 0;
+	  resultString = numBodyBytes > 0 ? strDup(bodyStart) : strDup(publicParamsStr);
+          // Note: The "strDup(bodyStart)" call assumes that the body is encoded without interior '\0' bytes
+	} else {
+	  resultCode = responseCode;
+	  resultString = strDup(responseStr);
+	  envir().setResultMsg(responseStr);
+	}
+	(*foundRequest->handler())(this, resultCode, resultString);
+      } else {
+	// An error occurred parsing the response, so call the handler, indicating an error:
+	handleRequestError(foundRequest);
+      }
+    }
+    delete foundRequest;
+    delete[] headerDataCopy;
+    if (numExtraBytesAfterResponse > 0 && numBodyBytes > 0) delete[] bodyStart;
+  } while (numExtraBytesAfterResponse > 0 && responseSuccess);
+}
+
+int RTSPClient::write(const char* data, unsigned count) {
+      if (fTLS.isNeeded) {
+	return fTLS.write(data, count);
+      } else {
+	return send(fOutputSocketNum, data, count, 0);
+      }
+}
+
+int RTSPClient::read(u_int8_t* buffer, unsigned bufferSize) {
+  if (fTLS.isNeeded) {
+    return fTLS.read(buffer, bufferSize);
+  } else {
+    struct sockaddr_in dummy; // 'from' address - not used
+    return readSocket(envir(), fInputSocketNum, buffer, bufferSize, dummy);
+  }
+}
+
+
+////////// RTSPClient::RequestRecord implementation //////////
+
+RTSPClient::RequestRecord::RequestRecord(unsigned cseq, char const* commandName, responseHandler* handler,
+					 MediaSession* session, MediaSubsession* subsession, u_int32_t booleanFlags,
+					 double start, double end, float scale, char const* contentStr)
+  : fNext(NULL), fCSeq(cseq), fCommandName(commandName), fSession(session), fSubsession(subsession), fBooleanFlags(booleanFlags),
+    fStart(start), fEnd(end), fAbsStartTime(NULL), fAbsEndTime(NULL), fScale(scale), fContentStr(strDup(contentStr)), fHandler(handler) {
+}
+
+RTSPClient::RequestRecord::RequestRecord(unsigned cseq, responseHandler* handler,
+					 char const* absStartTime, char const* absEndTime, float scale,
+					 MediaSession* session, MediaSubsession* subsession)
+  : fNext(NULL), fCSeq(cseq), fCommandName("PLAY"), fSession(session), fSubsession(subsession), fBooleanFlags(0),
+    fStart(0.0f), fEnd(-1.0f), fAbsStartTime(strDup(absStartTime)), fAbsEndTime(strDup(absEndTime)), fScale(scale),
+    fContentStr(NULL), fHandler(handler) {
+}
+
+RTSPClient::RequestRecord::~RequestRecord() {
+  // Delete the rest of the list first:
+  delete fNext;
+
+  delete[] fAbsStartTime; delete[] fAbsEndTime;
+  delete[] fContentStr;
+}
+
+
+////////// RTSPClient::RequestQueue implementation //////////
+
+RTSPClient::RequestQueue::RequestQueue()
+  : fHead(NULL), fTail(NULL) {
+}
+
+RTSPClient::RequestQueue::RequestQueue(RequestQueue& origQueue)
+  : fHead(NULL), fTail(NULL) {
+  RequestRecord* request;
+  while ((request = origQueue.dequeue()) != NULL) {
+    enqueue(request);
+  }
+}
+
+RTSPClient::RequestQueue::~RequestQueue() {
+  reset();
+}
+
+void RTSPClient::RequestQueue::enqueue(RequestRecord* request) {
+  if (fTail == NULL) {
+    fHead = request;
+  } else {
+    fTail->next() = request;
+  }
+  fTail = request;
+}
+
+RTSPClient::RequestRecord* RTSPClient::RequestQueue::dequeue() {
+  RequestRecord* request = fHead;
+  if (fHead == fTail) {
+    fHead = NULL;
+    fTail = NULL;
+  } else {
+    fHead = fHead->next();
+  }
+  if (request != NULL) request->next() = NULL;
+  return request;
+}
+
+void RTSPClient::RequestQueue::putAtHead(RequestRecord* request) {
+  request->next() = fHead;
+  fHead = request;
+  if (fTail == NULL) {
+    fTail = request;
+  }
+}
+
+RTSPClient::RequestRecord* RTSPClient::RequestQueue::findByCSeq(unsigned cseq) {
+  RequestRecord* request;
+  for (request = fHead; request != NULL; request = request->next()) {
+    if (request->cseq() == cseq) return request;
+  }
+  return NULL;
+}
+
+void RTSPClient::RequestQueue::reset() {
+  delete fHead;
+  fHead = fTail = NULL;
+}
+
+
+#ifndef OMIT_REGISTER_HANDLING
+////////// HandlerServerForREGISTERCommand implementation /////////
+
+HandlerServerForREGISTERCommand* HandlerServerForREGISTERCommand
+::createNew(UsageEnvironment& env, onRTSPClientCreationFunc* creationFunc, Port ourPort,
+	    UserAuthenticationDatabase* authDatabase, int verbosityLevel, char const* applicationName) {
+  int ourSocket = setUpOurSocket(env, ourPort);
+  if (ourSocket == -1) return NULL;
+
+  return new HandlerServerForREGISTERCommand(env, creationFunc, ourSocket, ourPort, authDatabase, verbosityLevel, applicationName);
+}
+
+HandlerServerForREGISTERCommand
+::HandlerServerForREGISTERCommand(UsageEnvironment& env, onRTSPClientCreationFunc* creationFunc, int ourSocket, Port ourPort,
+                                  UserAuthenticationDatabase* authDatabase, int verbosityLevel, char const* applicationName)
+  : RTSPServer(env, ourSocket, ourPort, authDatabase, 30/*small reclamationTestSeconds*/),
+    fCreationFunc(creationFunc), fVerbosityLevel(verbosityLevel), fApplicationName(strDup(applicationName)) {
+}
+
+HandlerServerForREGISTERCommand::~HandlerServerForREGISTERCommand() {
+  delete[] fApplicationName;
+}
+
+RTSPClient* HandlerServerForREGISTERCommand
+::createNewRTSPClient(char const* rtspURL, int verbosityLevel, char const* applicationName, int socketNumToServer) {
+  // Default implementation: create a basic "RTSPClient":
+  return RTSPClient::createNew(envir(), rtspURL, verbosityLevel, applicationName, 0, socketNumToServer);
+}
+
+char const* HandlerServerForREGISTERCommand::allowedCommandNames() {
+  return "OPTIONS, REGISTER";
+}
+
+Boolean HandlerServerForREGISTERCommand
+::weImplementREGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+		      char const* /*proxyURLSuffix*/, char*& responseStr) {
+  responseStr = NULL;
+  // By default, we implement only "REGISTER"; not "DEREGISTER".  Subclass to implement "DEREGISTER"
+  return strcmp(cmd, "REGISTER") == 0;
+}
+
+void HandlerServerForREGISTERCommand
+::implementCmd_REGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+			char const* url, char const* urlSuffix, int socketToRemoteServer,
+			Boolean deliverViaTCP, char const* /*proxyURLSuffix*/) {
+  if (strcmp(cmd, "REGISTER") == 0) { // By default, we don't implement "DEREGISTER"
+    // Create a new "RTSPClient" object, and call our 'creation function' with it:
+    RTSPClient* newRTSPClient = createNewRTSPClient(url, fVerbosityLevel, fApplicationName, socketToRemoteServer);
+
+    if (fCreationFunc != NULL) (*fCreationFunc)(newRTSPClient, deliverViaTCP);
+  }
+}
+#endif
diff --git a/liveMedia/RTSPCommon.cpp b/liveMedia/RTSPCommon.cpp
new file mode 100644
index 0000000..c7dde82
--- /dev/null
+++ b/liveMedia/RTSPCommon.cpp
@@ -0,0 +1,374 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Common routines used by both RTSP clients and servers
+// Implementation
+
+#include "RTSPCommon.hh"
+#include "Locale.hh"
+#include <string.h>
+#include <stdio.h>
+#include <ctype.h> // for "isxdigit()
+#include <time.h> // for "strftime()" and "gmtime()"
+
+static void decodeURL(char* url) {
+  // Replace (in place) any %<hex><hex> sequences with the appropriate 8-bit character.
+  char* cursor = url;
+  while (*cursor) {
+    if ((cursor[0] == '%') &&
+	cursor[1] && isxdigit(cursor[1]) &&
+	cursor[2] && isxdigit(cursor[2])) {
+      // We saw a % followed by 2 hex digits, so we copy the literal hex value into the URL, then advance the cursor past it:
+      char hex[3];
+      hex[0] = cursor[1];
+      hex[1] = cursor[2];
+      hex[2] = '\0';
+      *url++ = (char)strtol(hex, NULL, 16);
+      cursor += 3;
+    } else {
+      // Common case: This is a normal character or a bogus % expression, so just copy it
+      *url++ = *cursor++;
+    }
+  }
+  
+  *url = '\0';
+}
+
+Boolean parseRTSPRequestString(char const* reqStr,
+			       unsigned reqStrSize,
+			       char* resultCmdName,
+			       unsigned resultCmdNameMaxSize,
+			       char* resultURLPreSuffix,
+			       unsigned resultURLPreSuffixMaxSize,
+			       char* resultURLSuffix,
+			       unsigned resultURLSuffixMaxSize,
+			       char* resultCSeq,
+			       unsigned resultCSeqMaxSize,
+                               char* resultSessionIdStr,
+                               unsigned resultSessionIdStrMaxSize,
+			       unsigned& contentLength) {
+  // This parser is currently rather dumb; it should be made smarter #####
+
+  // "Be liberal in what you accept": Skip over any whitespace at the start of the request:
+  unsigned i;
+  for (i = 0; i < reqStrSize; ++i) {
+    char c = reqStr[i];
+    if (!(c == ' ' || c == '\t' || c == '\r' || c == '\n' || c == '\0')) break;
+  }
+  if (i == reqStrSize) return False; // The request consisted of nothing but whitespace!
+
+  // Then read everything up to the next space (or tab) as the command name:
+  Boolean parseSucceeded = False;
+  unsigned i1 = 0;
+  for (; i1 < resultCmdNameMaxSize-1 && i < reqStrSize; ++i,++i1) {
+    char c = reqStr[i];
+    if (c == ' ' || c == '\t') {
+      parseSucceeded = True;
+      break;
+    }
+
+    resultCmdName[i1] = c;
+  }
+  resultCmdName[i1] = '\0';
+  if (!parseSucceeded) return False;
+
+  // Skip over the prefix of any "rtsp://" or "rtsp:/" URL that follows:
+  unsigned j = i+1;
+  while (j < reqStrSize && (reqStr[j] == ' ' || reqStr[j] == '\t')) ++j; // skip over any additional white space
+  for (; (int)j < (int)(reqStrSize-8); ++j) {
+    if ((reqStr[j] == 'r' || reqStr[j] == 'R')
+	&& (reqStr[j+1] == 't' || reqStr[j+1] == 'T')
+	&& (reqStr[j+2] == 's' || reqStr[j+2] == 'S')
+	&& (reqStr[j+3] == 'p' || reqStr[j+3] == 'P')
+	&& reqStr[j+4] == ':' && reqStr[j+5] == '/') {
+      j += 6;
+      if (reqStr[j] == '/') {
+	// This is a "rtsp://" URL; skip over the host:port part that follows:
+	++j;
+	while (j < reqStrSize && reqStr[j] != '/' && reqStr[j] != ' ') ++j;
+      } else {
+	// This is a "rtsp:/" URL; back up to the "/":
+	--j;
+      }
+      i = j;
+      break;
+    }
+  }
+
+  // Look for the URL suffix (before the following "RTSP/"):
+  parseSucceeded = False;
+  for (unsigned k = i+1; (int)k < (int)(reqStrSize-5); ++k) {
+    if (reqStr[k] == 'R' && reqStr[k+1] == 'T' &&
+	reqStr[k+2] == 'S' && reqStr[k+3] == 'P' && reqStr[k+4] == '/') {
+      while (--k >= i && reqStr[k] == ' ') {} // go back over all spaces before "RTSP/"
+      unsigned k1 = k;
+      while (k1 > i && reqStr[k1] != '/') --k1;
+
+      // ASSERT: At this point
+      //   i: first space or slash after "host" or "host:port"
+      //   k: last non-space before "RTSP/"
+      //   k1: last slash in the range [i,k]
+
+      // The URL suffix comes from [k1+1,k]
+      // Copy "resultURLSuffix":
+      unsigned n = 0, k2 = k1+1;
+      if (k2 <= k) {
+        if (k - k1 + 1 > resultURLSuffixMaxSize) return False; // there's no room
+        while (k2 <= k) resultURLSuffix[n++] = reqStr[k2++];
+      }
+      resultURLSuffix[n] = '\0';
+
+      // The URL 'pre-suffix' comes from [i+1,k1-1]
+      // Copy "resultURLPreSuffix":
+      n = 0; k2 = i+1;
+      if (k2+1 <= k1) {
+        if (k1 - i > resultURLPreSuffixMaxSize) return False; // there's no room
+        while (k2 <= k1-1) resultURLPreSuffix[n++] = reqStr[k2++];
+      }
+      resultURLPreSuffix[n] = '\0';
+      decodeURL(resultURLPreSuffix);
+
+      i = k + 7; // to go past " RTSP/"
+      parseSucceeded = True;
+      break;
+    }
+  }
+  if (!parseSucceeded) return False;
+
+  // Look for "CSeq:" (mandatory, case insensitive), skip whitespace,
+  // then read everything up to the next \r or \n as 'CSeq':
+  parseSucceeded = False;
+  for (j = i; (int)j < (int)(reqStrSize-5); ++j) {
+    if (_strncasecmp("CSeq:", &reqStr[j], 5) == 0) {
+      j += 5;
+      while (j < reqStrSize && (reqStr[j] ==  ' ' || reqStr[j] == '\t')) ++j;
+      unsigned n;
+      for (n = 0; n < resultCSeqMaxSize-1 && j < reqStrSize; ++n,++j) {
+	char c = reqStr[j];
+	if (c == '\r' || c == '\n') {
+	  parseSucceeded = True;
+	  break;
+	}
+
+	resultCSeq[n] = c;
+      }
+      resultCSeq[n] = '\0';
+      break;
+    }
+  }
+  if (!parseSucceeded) return False;
+
+  // Look for "Session:" (optional, case insensitive), skip whitespace,
+  // then read everything up to the next \r or \n as 'Session':
+  resultSessionIdStr[0] = '\0'; // default value (empty string)
+  for (j = i; (int)j < (int)(reqStrSize-8); ++j) {
+    if (_strncasecmp("Session:", &reqStr[j], 8) == 0) {
+      j += 8;
+      while (j < reqStrSize && (reqStr[j] ==  ' ' || reqStr[j] == '\t')) ++j;
+      unsigned n;
+      for (n = 0; n < resultSessionIdStrMaxSize-1 && j < reqStrSize; ++n,++j) {
+	char c = reqStr[j];
+	if (c == '\r' || c == '\n') {
+	  break;
+	}
+
+	resultSessionIdStr[n] = c;
+      }
+      resultSessionIdStr[n] = '\0';
+      break;
+    }
+  }
+
+  // Also: Look for "Content-Length:" (optional, case insensitive)
+  contentLength = 0; // default value
+  for (j = i; (int)j < (int)(reqStrSize-15); ++j) {
+    if (_strncasecmp("Content-Length:", &(reqStr[j]), 15) == 0) {
+      j += 15;
+      while (j < reqStrSize && (reqStr[j] ==  ' ' || reqStr[j] == '\t')) ++j;
+      unsigned num;
+      if (sscanf(&reqStr[j], "%u", &num) == 1) {
+	contentLength = num;
+      }
+    }
+  }
+  return True;
+}
+
+Boolean parseRangeParam(char const* paramStr,
+			double& rangeStart, double& rangeEnd,
+			char*& absStartTime, char*& absEndTime,
+			Boolean& startTimeIsNow) {
+  delete[] absStartTime; delete[] absEndTime;
+  absStartTime = absEndTime = NULL; // by default, unless "paramStr" is a "clock=..." string
+  startTimeIsNow = False; // by default
+  double start, end;
+  int numCharsMatched1 = 0, numCharsMatched2 = 0, numCharsMatched3 = 0, numCharsMatched4 = 0;
+  int startHour = 0, startMin = 0, endHour = 0, endMin = 0;
+  double startSec = 0.0, endSec = 0.0;
+  Locale l("C", Numeric);
+  if (sscanf(paramStr, "npt = %d:%d:%lf - %d:%d:%lf", &startHour, &startMin, &startSec, &endHour, &endMin, &endSec) == 6) {
+    rangeStart = startHour*3600 + startMin*60 + startSec;
+    rangeEnd = endHour*3600 + endMin*60 + endSec;
+  } else if (sscanf(paramStr, "npt =%lf - %d:%d:%lf", &start, &endHour, &endMin, &endSec) == 4) {
+    rangeStart = start;
+    rangeEnd = endHour*3600 + endMin*60 + endSec;
+  } else if (sscanf(paramStr, "npt = %d:%d:%lf -", &startHour, &startMin, &startSec) == 3) {
+    rangeStart = startHour*3600 + startMin*60 + startSec;
+    rangeEnd = 0.0;
+  } else if (sscanf(paramStr, "npt = %lf - %lf", &start, &end) == 2) {
+    rangeStart = start;
+    rangeEnd = end;
+  } else if (sscanf(paramStr, "npt = %n%lf -", &numCharsMatched1, &start) == 1) {
+    if (paramStr[numCharsMatched1] == '-') {
+      // special case for "npt = -<endtime>", which matches here:
+      rangeStart = 0.0; startTimeIsNow = True;
+      rangeEnd = -start;
+    } else {
+      rangeStart = start;
+      rangeEnd = 0.0;
+    }
+  } else if (sscanf(paramStr, "npt = now - %lf", &end) == 1) {
+      rangeStart = 0.0; startTimeIsNow = True;
+      rangeEnd = end;
+  } else if (sscanf(paramStr, "npt = now -%n", &numCharsMatched2) == 0 && numCharsMatched2 > 0) {
+    rangeStart = 0.0; startTimeIsNow = True;
+    rangeEnd = 0.0;
+  } else if (sscanf(paramStr, "clock = %n", &numCharsMatched3) == 0 && numCharsMatched3 > 0) {
+    rangeStart = rangeEnd = 0.0;
+
+    char const* utcTimes = &paramStr[numCharsMatched3];
+    size_t len = strlen(utcTimes) + 1;
+    char* as = new char[len];
+    char* ae = new char[len];
+    int sscanfResult = sscanf(utcTimes, "%[^-]-%[^\r\n]", as, ae);
+    if (sscanfResult == 2) {
+      absStartTime = as;
+      absEndTime = ae;
+    } else if (sscanfResult == 1) {
+      absStartTime = as;
+      delete[] ae;
+    } else {
+      delete[] as; delete[] ae;
+      return False;
+    }
+  } else if (sscanf(paramStr, "smtpe = %n", &numCharsMatched4) == 0 && numCharsMatched4 > 0) {
+    // We accept "smtpe=" parameters, but currently do not interpret them.
+  } else {
+    return False; // The header is malformed
+  }
+
+  return True;
+}
+
+Boolean parseRangeHeader(char const* buf,
+			 double& rangeStart, double& rangeEnd,
+			 char*& absStartTime, char*& absEndTime,
+			 Boolean& startTimeIsNow) {
+  // First, find "Range:"
+  while (1) {
+    if (*buf == '\0') return False; // not found
+    if (_strncasecmp(buf, "Range: ", 7) == 0) break;
+    ++buf;
+  }
+
+  char const* fields = buf + 7;
+  while (*fields == ' ') ++fields;
+  return parseRangeParam(fields, rangeStart, rangeEnd, absStartTime, absEndTime, startTimeIsNow);
+}
+
+Boolean parseScaleHeader(char const* buf, float& scale) {
+  // Initialize the result parameter to a default value:
+  scale = 1.0;
+
+  // First, find "Scale:"
+  while (1) {
+    if (*buf == '\0') return False; // not found
+    if (_strncasecmp(buf, "Scale:", 6) == 0) break;
+    ++buf;
+  }
+
+  char const* fields = buf + 6;
+  while (*fields == ' ') ++fields;
+  float sc;
+  if (sscanf(fields, "%f", &sc) == 1) {
+    scale = sc;
+  } else {
+    return False; // The header is malformed
+  }
+
+  return True;
+}
+
+// Used to implement "RTSPOptionIsSupported()":
+static Boolean isSeparator(char c) { return c == ' ' || c == ',' || c == ';' || c == ':'; }
+
+Boolean RTSPOptionIsSupported(char const* commandName, char const* optionsResponseString) {
+  do {
+    if (commandName == NULL || optionsResponseString == NULL) break;
+
+    unsigned const commandNameLen = strlen(commandName);
+    if (commandNameLen == 0) break;
+
+    // "optionsResponseString" is assumed to be a list of command names, separated by " " and/or ",", ";", or ":"
+    // Scan through these, looking for "commandName".
+    while (1) {
+      // Skip over separators:
+      while (*optionsResponseString != '\0' && isSeparator(*optionsResponseString)) ++optionsResponseString;
+      if (*optionsResponseString == '\0') break;
+
+      // At this point, "optionsResponseString" begins with a command name (with perhaps a separator afterwads).
+      if (strncmp(commandName, optionsResponseString, commandNameLen) == 0) {
+	// We have at least a partial match here.
+	optionsResponseString += commandNameLen;
+	if (*optionsResponseString == '\0' || isSeparator(*optionsResponseString)) return True;
+      }
+
+      // No match.  Skip over the rest of the command name:
+      while (*optionsResponseString != '\0' && !isSeparator(*optionsResponseString)) ++optionsResponseString;
+    }
+  } while (0);
+
+  return False;
+}
+
+char const* dateHeader() {
+  static char buf[200];
+#if !defined(_WIN32_WCE)
+  time_t tt = time(NULL);
+  strftime(buf, sizeof buf, "Date: %a, %b %d %Y %H:%M:%S GMT\r\n", gmtime(&tt));
+#else
+  // WinCE apparently doesn't have "time()", "strftime()", or "gmtime()",
+  // so generate the "Date:" header a different, WinCE-specific way.
+  // (Thanks to Pierre l'Hussiez for this code)
+  // RSF: But where is the "Date: " string?  This code doesn't look quite right...
+  SYSTEMTIME SystemTime;
+  GetSystemTime(&SystemTime);
+  WCHAR dateFormat[] = L"ddd, MMM dd yyyy";
+  WCHAR timeFormat[] = L"HH:mm:ss GMT\r\n";
+  WCHAR inBuf[200];
+  DWORD locale = LOCALE_NEUTRAL;
+
+  int ret = GetDateFormat(locale, 0, &SystemTime,
+                          (LPTSTR)dateFormat, (LPTSTR)inBuf, sizeof inBuf);
+  inBuf[ret - 1] = ' ';
+  ret = GetTimeFormat(locale, 0, &SystemTime,
+                      (LPTSTR)timeFormat,
+                      (LPTSTR)inBuf + ret, (sizeof inBuf) - ret);
+  wcstombs(buf, inBuf, wcslen(inBuf));
+#endif
+  return buf;
+}
diff --git a/liveMedia/RTSPRegisterSender.cpp b/liveMedia/RTSPRegisterSender.cpp
new file mode 100644
index 0000000..ec66e6a
--- /dev/null
+++ b/liveMedia/RTSPRegisterSender.cpp
@@ -0,0 +1,228 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Special objects which, when created, sends a custom RTSP "REGISTER" (or "DEREGISTER") command
+// to a specified client.
+// Implementation
+
+#include "RTSPRegisterSender.hh"
+#include <GroupsockHelper.hh> // for MAKE_SOCKADDR_IN
+
+////////// RTSPRegisterOrDeregisterSender implementation /////////
+
+RTSPRegisterOrDeregisterSender
+::RTSPRegisterOrDeregisterSender(UsageEnvironment& env,
+				 char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum,
+				 Authenticator* authenticator,
+				 int verbosityLevel, char const* applicationName)
+  : RTSPClient(env, NULL, verbosityLevel, applicationName, 0, -1),
+    fRemoteClientPortNum(remoteClientPortNum) {
+  // Set up a connection to the remote client.  To do this, we create a fake "rtsp://" URL for it:
+  char const* fakeRTSPURLFmt = "rtsp://%s:%u/";
+  unsigned fakeRTSPURLSize = strlen(fakeRTSPURLFmt) + strlen(remoteClientNameOrAddress) + 5/* max port num len */;
+  char* fakeRTSPURL = new char[fakeRTSPURLSize];
+  sprintf(fakeRTSPURL, fakeRTSPURLFmt, remoteClientNameOrAddress, remoteClientPortNum);
+  setBaseURL(fakeRTSPURL);
+  delete[] fakeRTSPURL;
+
+  if (authenticator != NULL) fCurrentAuthenticator = *authenticator;
+}
+
+RTSPRegisterOrDeregisterSender::~RTSPRegisterOrDeregisterSender() {
+}
+
+RTSPRegisterOrDeregisterSender::RequestRecord_REGISTER_or_DEREGISTER
+::RequestRecord_REGISTER_or_DEREGISTER(unsigned cseq, char const* cmdName,
+				       RTSPClient::responseHandler* rtspResponseHandler,
+				       char const* rtspURLToRegisterOrDeregister,
+				       char const* proxyURLSuffix)
+  : RTSPClient::RequestRecord(cseq, cmdName, rtspResponseHandler),
+    fRTSPURLToRegisterOrDeregister(strDup(rtspURLToRegisterOrDeregister)),
+    fProxyURLSuffix(strDup(proxyURLSuffix)) {
+}
+
+RTSPRegisterOrDeregisterSender::RequestRecord_REGISTER_or_DEREGISTER
+::~RequestRecord_REGISTER_or_DEREGISTER() {
+  delete[] fRTSPURLToRegisterOrDeregister;
+  delete[] fProxyURLSuffix;
+}
+
+
+////////// RTSPRegisterSender implementation /////////
+
+RTSPRegisterSender* RTSPRegisterSender
+::createNew(UsageEnvironment& env,
+            char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum, char const* rtspURLToRegister,
+            RTSPClient::responseHandler* rtspResponseHandler, Authenticator* authenticator,
+	    Boolean requestStreamingViaTCP, char const* proxyURLSuffix, Boolean reuseConnection,
+            int verbosityLevel, char const* applicationName) {
+  return new RTSPRegisterSender(env, remoteClientNameOrAddress, remoteClientPortNum, rtspURLToRegister,
+				rtspResponseHandler, authenticator,
+				requestStreamingViaTCP, proxyURLSuffix, reuseConnection,
+				verbosityLevel, applicationName);
+}
+
+void RTSPRegisterSender::grabConnection(int& sock, struct sockaddr_in& remoteAddress) {
+  sock = grabSocket();
+
+  MAKE_SOCKADDR_IN(remoteAddr, fServerAddress, htons(fRemoteClientPortNum));
+  remoteAddress = remoteAddr;
+}
+
+RTSPRegisterSender
+::RTSPRegisterSender(UsageEnvironment& env,
+		     char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum, char const* rtspURLToRegister,
+		     RTSPClient::responseHandler* rtspResponseHandler, Authenticator* authenticator,
+		     Boolean requestStreamingViaTCP, char const* proxyURLSuffix, Boolean reuseConnection,
+		     int verbosityLevel, char const* applicationName)
+  : RTSPRegisterOrDeregisterSender(env, remoteClientNameOrAddress, remoteClientPortNum, authenticator, verbosityLevel, applicationName) {
+  // Send the "REGISTER" request:
+  (void)sendRequest(new RequestRecord_REGISTER(++fCSeq, rtspResponseHandler,
+					       rtspURLToRegister, reuseConnection, requestStreamingViaTCP, proxyURLSuffix));
+}
+
+RTSPRegisterSender::~RTSPRegisterSender() {
+}
+
+Boolean RTSPRegisterSender::setRequestFields(RequestRecord* request,
+					     char*& cmdURL, Boolean& cmdURLWasAllocated,
+					     char const*& protocolStr,
+					     char*& extraHeaders, Boolean& extraHeadersWereAllocated) {
+  if (strcmp(request->commandName(), "REGISTER") == 0) {
+    RequestRecord_REGISTER* request_REGISTER = (RequestRecord_REGISTER*)request;
+
+    setBaseURL(request_REGISTER->rtspURLToRegister());
+    cmdURL = (char*)url();
+    cmdURLWasAllocated = False;
+
+    // Generate the "Transport:" header that will contain our REGISTER-specific parameters.  This will be "extraHeaders".
+    // First, generate the "proxy_url_suffix" parameter string, if any:
+    char* proxyURLSuffixParameterStr;
+    if (request_REGISTER->proxyURLSuffix() == NULL) {
+      proxyURLSuffixParameterStr = strDup("");
+    } else {
+      char const* proxyURLSuffixParameterFmt = "; proxy_url_suffix=%s";
+      unsigned proxyURLSuffixParameterSize = strlen(proxyURLSuffixParameterFmt)
+	+ strlen(request_REGISTER->proxyURLSuffix());
+      proxyURLSuffixParameterStr = new char[proxyURLSuffixParameterSize];
+      sprintf(proxyURLSuffixParameterStr, proxyURLSuffixParameterFmt, request_REGISTER->proxyURLSuffix());
+    }
+
+    char const* transportHeaderFmt = "Transport: %spreferred_delivery_protocol=%s%s\r\n";
+    unsigned transportHeaderSize = strlen(transportHeaderFmt) + 100/*conservative*/ + strlen(proxyURLSuffixParameterStr);
+    char* transportHeaderStr = new char[transportHeaderSize];
+    sprintf(transportHeaderStr, transportHeaderFmt,
+	    request_REGISTER->reuseConnection() ? "reuse_connection; " : "",
+	    request_REGISTER->requestStreamingViaTCP() ? "interleaved" : "udp",
+	    proxyURLSuffixParameterStr);
+    delete[] proxyURLSuffixParameterStr;
+
+    extraHeaders = transportHeaderStr;
+    extraHeadersWereAllocated = True;
+
+    return True;
+  } else {
+    return RTSPClient::setRequestFields(request, cmdURL, cmdURLWasAllocated, protocolStr, extraHeaders, extraHeadersWereAllocated);
+  }
+}
+
+RTSPRegisterSender::RequestRecord_REGISTER
+::RequestRecord_REGISTER(unsigned cseq, RTSPClient::responseHandler* rtspResponseHandler, char const* rtspURLToRegister,
+			 Boolean reuseConnection, Boolean requestStreamingViaTCP, char const* proxyURLSuffix)
+  : RTSPRegisterOrDeregisterSender::RequestRecord_REGISTER_or_DEREGISTER(cseq, "REGISTER", rtspResponseHandler, rtspURLToRegister, proxyURLSuffix),
+    fReuseConnection(reuseConnection), fRequestStreamingViaTCP(requestStreamingViaTCP) {
+}
+
+RTSPRegisterSender::RequestRecord_REGISTER::~RequestRecord_REGISTER() {
+}
+
+
+////////// RTSPDeregisterSender implementation /////////
+
+RTSPDeregisterSender* RTSPDeregisterSender
+::createNew(UsageEnvironment& env,
+	    char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum, char const* rtspURLToDeregister,
+	    RTSPClient::responseHandler* rtspResponseHandler, Authenticator* authenticator,
+	    char const* proxyURLSuffix, int verbosityLevel, char const* applicationName) {
+  return new RTSPDeregisterSender(env, remoteClientNameOrAddress, remoteClientPortNum, rtspURLToDeregister,
+				  rtspResponseHandler, authenticator,
+				  proxyURLSuffix, verbosityLevel, applicationName);
+}
+
+RTSPDeregisterSender
+::RTSPDeregisterSender(UsageEnvironment& env,
+		       char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum, char const* rtspURLToDeregister,
+		     RTSPClient::responseHandler* rtspResponseHandler, Authenticator* authenticator,
+		     char const* proxyURLSuffix,
+		     int verbosityLevel, char const* applicationName)
+  : RTSPRegisterOrDeregisterSender(env, remoteClientNameOrAddress, remoteClientPortNum, authenticator, verbosityLevel, applicationName) {
+  // Send the "DEREGISTER" request:
+  (void)sendRequest(new RequestRecord_DEREGISTER(++fCSeq, rtspResponseHandler,
+						 rtspURLToDeregister, proxyURLSuffix));
+}
+
+RTSPDeregisterSender::~RTSPDeregisterSender() {
+}
+
+Boolean RTSPDeregisterSender::setRequestFields(RequestRecord* request,
+					       char*& cmdURL, Boolean& cmdURLWasAllocated,
+					       char const*& protocolStr,
+					       char*& extraHeaders, Boolean& extraHeadersWereAllocated) {
+  if (strcmp(request->commandName(), "DEREGISTER") == 0) {
+    RequestRecord_DEREGISTER* request_DEREGISTER = (RequestRecord_DEREGISTER*)request;
+
+    setBaseURL(request_DEREGISTER->rtspURLToDeregister());
+    cmdURL = (char*)url();
+    cmdURLWasAllocated = False;
+
+    // Generate the "Transport:" header that will contain our DEREGISTER-specific parameters.  This will be "extraHeaders".
+    // First, generate the "proxy_url_suffix" parameter string, if any:
+    char* proxyURLSuffixParameterStr;
+    if (request_DEREGISTER->proxyURLSuffix() == NULL) {
+      proxyURLSuffixParameterStr = strDup("");
+    } else {
+      char const* proxyURLSuffixParameterFmt = "proxy_url_suffix=%s";
+      unsigned proxyURLSuffixParameterSize = strlen(proxyURLSuffixParameterFmt)
+	+ strlen(request_DEREGISTER->proxyURLSuffix());
+      proxyURLSuffixParameterStr = new char[proxyURLSuffixParameterSize];
+      sprintf(proxyURLSuffixParameterStr, proxyURLSuffixParameterFmt, request_DEREGISTER->proxyURLSuffix());
+    }
+
+    char const* transportHeaderFmt = "Transport: %s\r\n";
+    unsigned transportHeaderSize = strlen(transportHeaderFmt) + strlen(proxyURLSuffixParameterStr);
+    char* transportHeaderStr = new char[transportHeaderSize];
+    sprintf(transportHeaderStr, transportHeaderFmt,
+	    proxyURLSuffixParameterStr);
+    delete[] proxyURLSuffixParameterStr;
+
+    extraHeaders = transportHeaderStr;
+    extraHeadersWereAllocated = True;
+
+    return True;
+  } else {
+    return RTSPClient::setRequestFields(request, cmdURL, cmdURLWasAllocated, protocolStr, extraHeaders, extraHeadersWereAllocated);
+  }
+}
+
+RTSPDeregisterSender::RequestRecord_DEREGISTER
+::RequestRecord_DEREGISTER(unsigned cseq, RTSPClient::responseHandler* rtspResponseHandler, char const* rtspURLToDeregister,
+			   char const* proxyURLSuffix)
+  : RTSPRegisterOrDeregisterSender::RequestRecord_REGISTER_or_DEREGISTER(cseq, "DEREGISTER", rtspResponseHandler, rtspURLToDeregister, proxyURLSuffix) {
+}
+
+RTSPDeregisterSender::RequestRecord_DEREGISTER::~RequestRecord_DEREGISTER() {
+}
diff --git a/liveMedia/RTSPServer.cpp b/liveMedia/RTSPServer.cpp
new file mode 100644
index 0000000..a6b1ca4
--- /dev/null
+++ b/liveMedia/RTSPServer.cpp
@@ -0,0 +1,1874 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A RTSP server
+// Implementation
+
+#include "RTSPServer.hh"
+#include "RTSPCommon.hh"
+#include "RTSPRegisterSender.hh"
+#include "Base64.hh"
+#include <GroupsockHelper.hh>
+
+////////// RTSPServer implementation //////////
+
+RTSPServer*
+RTSPServer::createNew(UsageEnvironment& env, Port ourPort,
+		      UserAuthenticationDatabase* authDatabase,
+		      unsigned reclamationSeconds) {
+  int ourSocket = setUpOurSocket(env, ourPort);
+  if (ourSocket == -1) return NULL;
+  
+  return new RTSPServer(env, ourSocket, ourPort, authDatabase, reclamationSeconds);
+}
+
+Boolean RTSPServer::lookupByName(UsageEnvironment& env,
+				 char const* name,
+				 RTSPServer*& resultServer) {
+  resultServer = NULL; // unless we succeed
+  
+  Medium* medium;
+  if (!Medium::lookupByName(env, name, medium)) return False;
+  
+  if (!medium->isRTSPServer()) {
+    env.setResultMsg(name, " is not a RTSP server");
+    return False;
+  }
+  
+  resultServer = (RTSPServer*)medium;
+  return True;
+}
+
+char* RTSPServer
+::rtspURL(ServerMediaSession const* serverMediaSession, int clientSocket) const {
+  char* urlPrefix = rtspURLPrefix(clientSocket);
+  char const* sessionName = serverMediaSession->streamName();
+  
+  char* resultURL = new char[strlen(urlPrefix) + strlen(sessionName) + 1];
+  sprintf(resultURL, "%s%s", urlPrefix, sessionName);
+  
+  delete[] urlPrefix;
+  return resultURL;
+}
+
+char* RTSPServer::rtspURLPrefix(int clientSocket) const {
+  struct sockaddr_in ourAddress;
+  if (clientSocket < 0) {
+    // Use our default IP address in the URL:
+    ourAddress.sin_addr.s_addr = ReceivingInterfaceAddr != 0
+      ? ReceivingInterfaceAddr
+      : ourIPAddress(envir()); // hack
+  } else {
+    SOCKLEN_T namelen = sizeof ourAddress;
+    getsockname(clientSocket, (struct sockaddr*)&ourAddress, &namelen);
+  }
+  
+  char urlBuffer[100]; // more than big enough for "rtsp://<ip-address>:<port>/"
+  
+  portNumBits portNumHostOrder = ntohs(fServerPort.num());
+  if (portNumHostOrder == 554 /* the default port number */) {
+    sprintf(urlBuffer, "rtsp://%s/", AddressString(ourAddress).val());
+  } else {
+    sprintf(urlBuffer, "rtsp://%s:%hu/",
+	    AddressString(ourAddress).val(), portNumHostOrder);
+  }
+  
+  return strDup(urlBuffer);
+}
+
+UserAuthenticationDatabase* RTSPServer::setAuthenticationDatabase(UserAuthenticationDatabase* newDB) {
+  UserAuthenticationDatabase* oldDB = fAuthDB;
+  fAuthDB = newDB;
+  
+  return oldDB;
+}
+
+Boolean RTSPServer::setUpTunnelingOverHTTP(Port httpPort) {
+  fHTTPServerSocket = setUpOurSocket(envir(), httpPort);
+  if (fHTTPServerSocket >= 0) {
+    fHTTPServerPort = httpPort;
+    envir().taskScheduler().turnOnBackgroundReadHandling(fHTTPServerSocket,
+							 incomingConnectionHandlerHTTP, this);
+    return True;
+  }
+  
+  return False;
+}
+
+portNumBits RTSPServer::httpServerPortNum() const {
+  return ntohs(fHTTPServerPort.num());
+}
+
+char const* RTSPServer::allowedCommandNames() {
+  return "OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE, GET_PARAMETER, SET_PARAMETER";
+}
+
+UserAuthenticationDatabase* RTSPServer::getAuthenticationDatabaseForCommand(char const* /*cmdName*/) {
+  // default implementation
+  return fAuthDB;
+}
+
+Boolean RTSPServer::specialClientAccessCheck(int /*clientSocket*/, struct sockaddr_in& /*clientAddr*/, char const* /*urlSuffix*/) {
+  // default implementation
+  return True;
+}
+
+Boolean RTSPServer::specialClientUserAccessCheck(int /*clientSocket*/, struct sockaddr_in& /*clientAddr*/,
+						 char const* /*urlSuffix*/, char const * /*username*/) {
+  // default implementation; no further access restrictions:
+  return True;
+}
+
+
+RTSPServer::RTSPServer(UsageEnvironment& env,
+		       int ourSocket, Port ourPort,
+		       UserAuthenticationDatabase* authDatabase,
+		       unsigned reclamationSeconds)
+  : GenericMediaServer(env, ourSocket, ourPort, reclamationSeconds),
+    fHTTPServerSocket(-1), fHTTPServerPort(0),
+    fClientConnectionsForHTTPTunneling(NULL), // will get created if needed
+    fTCPStreamingDatabase(HashTable::create(ONE_WORD_HASH_KEYS)),
+    fPendingRegisterOrDeregisterRequests(HashTable::create(ONE_WORD_HASH_KEYS)),
+    fRegisterOrDeregisterRequestCounter(0), fAuthDB(authDatabase), fAllowStreamingRTPOverTCP(True) {
+}
+
+// A data structure that is used to implement "fTCPStreamingDatabase"
+// (and the "noteTCPStreamingOnSocket()" and "stopTCPStreamingOnSocket()" member functions):
+class streamingOverTCPRecord {
+public:
+  streamingOverTCPRecord(u_int32_t sessionId, unsigned trackNum, streamingOverTCPRecord* next)
+    : fNext(next), fSessionId(sessionId), fTrackNum(trackNum) {
+  }
+  virtual ~streamingOverTCPRecord() {
+    delete fNext;
+  }
+
+  streamingOverTCPRecord* fNext;
+  u_int32_t fSessionId;
+  unsigned fTrackNum;
+};
+
+RTSPServer::~RTSPServer() {
+  // Turn off background HTTP read handling (if any):
+  envir().taskScheduler().turnOffBackgroundReadHandling(fHTTPServerSocket);
+  ::closeSocket(fHTTPServerSocket);
+  
+  cleanup(); // Removes all "ClientSession" and "ClientConnection" objects, and their tables.
+  delete fClientConnectionsForHTTPTunneling;
+  
+  // Delete any pending REGISTER requests:
+  RTSPRegisterOrDeregisterSender* r;
+  while ((r = (RTSPRegisterOrDeregisterSender*)fPendingRegisterOrDeregisterRequests->getFirst()) != NULL) {
+    delete r;
+  }
+  delete fPendingRegisterOrDeregisterRequests;
+  
+  // Empty out and close "fTCPStreamingDatabase":
+  streamingOverTCPRecord* sotcp;
+  while ((sotcp = (streamingOverTCPRecord*)fTCPStreamingDatabase->getFirst()) != NULL) {
+    delete sotcp;
+  }
+  delete fTCPStreamingDatabase;
+}
+
+Boolean RTSPServer::isRTSPServer() const {
+  return True;
+}
+
+void RTSPServer::incomingConnectionHandlerHTTP(void* instance, int /*mask*/) {
+  RTSPServer* server = (RTSPServer*)instance;
+  server->incomingConnectionHandlerHTTP();
+}
+void RTSPServer::incomingConnectionHandlerHTTP() {
+  incomingConnectionHandlerOnSocket(fHTTPServerSocket);
+}
+
+void RTSPServer
+::noteTCPStreamingOnSocket(int socketNum, RTSPClientSession* clientSession, unsigned trackNum) {
+  streamingOverTCPRecord* sotcpCur
+    = (streamingOverTCPRecord*)fTCPStreamingDatabase->Lookup((char const*)socketNum);
+  streamingOverTCPRecord* sotcpNew
+    = new streamingOverTCPRecord(clientSession->fOurSessionId, trackNum, sotcpCur);
+  fTCPStreamingDatabase->Add((char const*)socketNum, sotcpNew);
+}
+
+void RTSPServer
+::unnoteTCPStreamingOnSocket(int socketNum, RTSPClientSession* clientSession, unsigned trackNum) {
+  if (socketNum < 0) return;
+  streamingOverTCPRecord* sotcpHead
+    = (streamingOverTCPRecord*)fTCPStreamingDatabase->Lookup((char const*)socketNum);
+  if (sotcpHead == NULL) return;
+
+  // Look for a record of the (session,track); remove it if found:
+  streamingOverTCPRecord* sotcp = sotcpHead;
+  streamingOverTCPRecord* sotcpPrev = sotcpHead;
+  do {
+    if (sotcp->fSessionId == clientSession->fOurSessionId && sotcp->fTrackNum == trackNum) break;
+    sotcpPrev = sotcp;
+    sotcp = sotcp->fNext;
+  } while (sotcp != NULL);
+  if (sotcp == NULL) return; // not found
+  
+  if (sotcp == sotcpHead) {
+    // We found it at the head of the list.  Remove it and reinsert the tail into the hash table:
+    sotcpHead = sotcp->fNext;
+    sotcp->fNext = NULL;
+    delete sotcp;
+
+    if (sotcpHead == NULL) {
+      // There were no more entries on the list.  Remove the original entry from the hash table:
+      fTCPStreamingDatabase->Remove((char const*)socketNum);
+    } else {
+      // Add the rest of the list into the hash table (replacing the original):
+      fTCPStreamingDatabase->Add((char const*)socketNum, sotcpHead);
+    }
+  } else {
+    // We found it on the list, but not at the head.  Unlink it:
+    sotcpPrev->fNext = sotcp->fNext;
+    sotcp->fNext = NULL;
+    delete sotcp;
+  }
+}
+
+void RTSPServer::stopTCPStreamingOnSocket(int socketNum) {
+  // Close any stream that is streaming over "socketNum" (using RTP/RTCP-over-TCP streaming):
+  streamingOverTCPRecord* sotcp
+    = (streamingOverTCPRecord*)fTCPStreamingDatabase->Lookup((char const*)socketNum);
+  if (sotcp != NULL) {
+    do {
+      RTSPClientSession* clientSession
+	= (RTSPServer::RTSPClientSession*)lookupClientSession(sotcp->fSessionId);
+      if (clientSession != NULL) {
+	clientSession->deleteStreamByTrack(sotcp->fTrackNum);
+      }
+
+      streamingOverTCPRecord* sotcpNext = sotcp->fNext;
+      sotcp->fNext = NULL;
+      delete sotcp;
+      sotcp = sotcpNext;
+    } while (sotcp != NULL);
+    fTCPStreamingDatabase->Remove((char const*)socketNum);
+  }
+}
+
+
+////////// RTSPServer::RTSPClientConnection implementation //////////
+
+RTSPServer::RTSPClientConnection
+::RTSPClientConnection(RTSPServer& ourServer, int clientSocket, struct sockaddr_in clientAddr)
+  : GenericMediaServer::ClientConnection(ourServer, clientSocket, clientAddr),
+    fOurRTSPServer(ourServer), fClientInputSocket(fOurSocket), fClientOutputSocket(fOurSocket),
+    fIsActive(True), fRecursionCount(0), fOurSessionCookie(NULL) {
+  resetRequestBuffer();
+}
+
+RTSPServer::RTSPClientConnection::~RTSPClientConnection() {
+  if (fOurSessionCookie != NULL) {
+    // We were being used for RTSP-over-HTTP tunneling. Also remove ourselves from the 'session cookie' hash table before we go:
+    fOurRTSPServer.fClientConnectionsForHTTPTunneling->Remove(fOurSessionCookie);
+    delete[] fOurSessionCookie;
+  }
+  
+  closeSocketsRTSP();
+}
+
+// Handler routines for specific RTSP commands:
+
+void RTSPServer::RTSPClientConnection::handleCmd_OPTIONS() {
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "RTSP/1.0 200 OK\r\nCSeq: %s\r\n%sPublic: %s\r\n\r\n",
+	   fCurrentCSeq, dateHeader(), fOurRTSPServer.allowedCommandNames());
+}
+
+void RTSPServer::RTSPClientConnection
+::handleCmd_GET_PARAMETER(char const* /*fullRequestStr*/) {
+  // By default, we implement "GET_PARAMETER" (on the entire server) just as a 'no op', and send back a dummy response.
+  // (If you want to handle this type of "GET_PARAMETER" differently, you can do so by defining a subclass of "RTSPServer"
+  // and "RTSPServer::RTSPClientConnection", and then reimplement this virtual function in your subclass.)
+  setRTSPResponse("200 OK", LIVEMEDIA_LIBRARY_VERSION_STRING);
+}
+
+void RTSPServer::RTSPClientConnection
+::handleCmd_SET_PARAMETER(char const* /*fullRequestStr*/) {
+  // By default, we implement "SET_PARAMETER" (on the entire server) just as a 'no op', and send back an empty response.
+  // (If you want to handle this type of "SET_PARAMETER" differently, you can do so by defining a subclass of "RTSPServer"
+  // and "RTSPServer::RTSPClientConnection", and then reimplement this virtual function in your subclass.)
+  setRTSPResponse("200 OK");
+}
+
+void RTSPServer::RTSPClientConnection
+::handleCmd_DESCRIBE(char const* urlPreSuffix, char const* urlSuffix, char const* fullRequestStr) {
+  ServerMediaSession* session = NULL;
+  char* sdpDescription = NULL;
+  char* rtspURL = NULL;
+  do {
+    char urlTotalSuffix[2*RTSP_PARAM_STRING_MAX];
+        // enough space for urlPreSuffix/urlSuffix'\0'
+    urlTotalSuffix[0] = '\0';
+    if (urlPreSuffix[0] != '\0') {
+      strcat(urlTotalSuffix, urlPreSuffix);
+      strcat(urlTotalSuffix, "/");
+    }
+    strcat(urlTotalSuffix, urlSuffix);
+    
+    if (!authenticationOK("DESCRIBE", urlTotalSuffix, fullRequestStr)) break;
+    
+    // We should really check that the request contains an "Accept:" #####
+    // for "application/sdp", because that's what we're sending back #####
+    
+    // Begin by looking up the "ServerMediaSession" object for the specified "urlTotalSuffix":
+    session = fOurServer.lookupServerMediaSession(urlTotalSuffix);
+    if (session == NULL) {
+      handleCmd_notFound();
+      break;
+    }
+    
+    // Increment the "ServerMediaSession" object's reference count, in case someone removes it
+    // while we're using it:
+    session->incrementReferenceCount();
+
+    // Then, assemble a SDP description for this session:
+    sdpDescription = session->generateSDPDescription();
+    if (sdpDescription == NULL) {
+      // This usually means that a file name that was specified for a
+      // "ServerMediaSubsession" does not exist.
+      setRTSPResponse("404 File Not Found, Or In Incorrect Format");
+      break;
+    }
+    unsigned sdpDescriptionSize = strlen(sdpDescription);
+    
+    // Also, generate our RTSP URL, for the "Content-Base:" header
+    // (which is necessary to ensure that the correct URL gets used in subsequent "SETUP" requests).
+    rtspURL = fOurRTSPServer.rtspURL(session, fClientInputSocket);
+    
+    snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	     "RTSP/1.0 200 OK\r\nCSeq: %s\r\n"
+	     "%s"
+	     "Content-Base: %s/\r\n"
+	     "Content-Type: application/sdp\r\n"
+	     "Content-Length: %d\r\n\r\n"
+	     "%s",
+	     fCurrentCSeq,
+	     dateHeader(),
+	     rtspURL,
+	     sdpDescriptionSize,
+	     sdpDescription);
+  } while (0);
+  
+  if (session != NULL) {
+    // Decrement its reference count, now that we're done using it:
+    session->decrementReferenceCount();
+    if (session->referenceCount() == 0 && session->deleteWhenUnreferenced()) {
+      fOurServer.removeServerMediaSession(session);
+    }
+  }
+
+  delete[] sdpDescription;
+  delete[] rtspURL;
+}
+
+static void lookForHeader(char const* headerName, char const* source, unsigned sourceLen, char* resultStr, unsigned resultMaxSize) {
+  resultStr[0] = '\0';  // by default, return an empty string
+  unsigned headerNameLen = strlen(headerName);
+  for (int i = 0; i < (int)(sourceLen-headerNameLen); ++i) {
+    if (strncmp(&source[i], headerName, headerNameLen) == 0 && source[i+headerNameLen] == ':') {
+      // We found the header.  Skip over any whitespace, then copy the rest of the line to "resultStr":
+      for (i += headerNameLen+1; i < (int)sourceLen && (source[i] == ' ' || source[i] == '\t'); ++i) {}
+      for (unsigned j = i; j < sourceLen; ++j) {
+	if (source[j] == '\r' || source[j] == '\n') {
+	  // We've found the end of the line.  Copy it to the result (if it will fit):
+	  if (j-i+1 > resultMaxSize) return; // it wouldn't fit
+	  char const* resultSource = &source[i];
+	  char const* resultSourceEnd = &source[j];
+	  while (resultSource < resultSourceEnd) *resultStr++ = *resultSource++;
+	  *resultStr = '\0';
+	  return;
+	}
+      }
+    }
+  }
+}
+
+void RTSPServer::RTSPClientConnection::handleCmd_bad() {
+  // Don't do anything with "fCurrentCSeq", because it might be nonsense
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "RTSP/1.0 400 Bad Request\r\n%sAllow: %s\r\n\r\n",
+	   dateHeader(), fOurRTSPServer.allowedCommandNames());
+}
+
+void RTSPServer::RTSPClientConnection::handleCmd_notSupported() {
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "RTSP/1.0 405 Method Not Allowed\r\nCSeq: %s\r\n%sAllow: %s\r\n\r\n",
+	   fCurrentCSeq, dateHeader(), fOurRTSPServer.allowedCommandNames());
+}
+
+void RTSPServer::RTSPClientConnection::handleCmd_notFound() {
+  setRTSPResponse("404 Stream Not Found");
+}
+
+void RTSPServer::RTSPClientConnection::handleCmd_sessionNotFound() {
+  setRTSPResponse("454 Session Not Found");
+}
+
+void RTSPServer::RTSPClientConnection::handleCmd_unsupportedTransport() {
+  setRTSPResponse("461 Unsupported Transport");
+}
+
+Boolean RTSPServer::RTSPClientConnection::parseHTTPRequestString(char* resultCmdName, unsigned resultCmdNameMaxSize,
+								 char* urlSuffix, unsigned urlSuffixMaxSize,
+								 char* sessionCookie, unsigned sessionCookieMaxSize,
+								 char* acceptStr, unsigned acceptStrMaxSize) {
+  // Check for the limited HTTP requests that we expect for specifying RTSP-over-HTTP tunneling.
+  // This parser is currently rather dumb; it should be made smarter #####
+  char const* reqStr = (char const*)fRequestBuffer;
+  unsigned const reqStrSize = fRequestBytesAlreadySeen;
+  
+  // Read everything up to the first space as the command name:
+  Boolean parseSucceeded = False;
+  unsigned i;
+  for (i = 0; i < resultCmdNameMaxSize-1 && i < reqStrSize; ++i) {
+    char c = reqStr[i];
+    if (c == ' ' || c == '\t') {
+      parseSucceeded = True;
+      break;
+    }
+    
+    resultCmdName[i] = c;
+  }
+  resultCmdName[i] = '\0';
+  if (!parseSucceeded) return False;
+  
+  // Look for the string "HTTP/", before the first \r or \n:
+  parseSucceeded = False;
+  for (; i < reqStrSize-5 && reqStr[i] != '\r' && reqStr[i] != '\n'; ++i) {
+    if (reqStr[i] == 'H' && reqStr[i+1] == 'T' && reqStr[i+2]== 'T' && reqStr[i+3]== 'P' && reqStr[i+4]== '/') {
+      i += 5; // to advance past the "HTTP/"
+      parseSucceeded = True;
+      break;
+    }
+  }
+  if (!parseSucceeded) return False;
+  
+  // Get the 'URL suffix' that occurred before this:
+  unsigned k = i-6;
+  while (k > 0 && reqStr[k] == ' ') --k; // back up over white space
+  unsigned j = k;
+  while (j > 0 && reqStr[j] != ' ' && reqStr[j] != '/') --j;
+  // The URL suffix is in position (j,k]:
+  if (k - j + 1 > urlSuffixMaxSize) return False; // there's no room> 
+  unsigned n = 0;
+  while (++j <= k) urlSuffix[n++] = reqStr[j];
+  urlSuffix[n] = '\0';
+  
+  // Look for various headers that we're interested in:
+  lookForHeader("x-sessioncookie", &reqStr[i], reqStrSize-i, sessionCookie, sessionCookieMaxSize);
+  lookForHeader("Accept", &reqStr[i], reqStrSize-i, acceptStr, acceptStrMaxSize);
+  
+  return True;
+}
+
+void RTSPServer::RTSPClientConnection::handleHTTPCmd_notSupported() {
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "HTTP/1.1 405 Method Not Allowed\r\n%s\r\n\r\n",
+	   dateHeader());
+}
+
+void RTSPServer::RTSPClientConnection::handleHTTPCmd_notFound() {
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "HTTP/1.1 404 Not Found\r\n%s\r\n\r\n",
+	   dateHeader());
+}
+
+void RTSPServer::RTSPClientConnection::handleHTTPCmd_OPTIONS() {
+#ifdef DEBUG
+  fprintf(stderr, "Handled HTTP \"OPTIONS\" request\n");
+#endif
+  // Construct a response to the "OPTIONS" command that notes that our special headers (for RTSP-over-HTTP tunneling) are allowed:
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "HTTP/1.1 200 OK\r\n"
+	   "%s"
+	   "Access-Control-Allow-Origin: *\r\n"
+	   "Access-Control-Allow-Methods: POST, GET, OPTIONS\r\n"
+	   "Access-Control-Allow-Headers: x-sessioncookie, Pragma, Cache-Control\r\n"
+	   "Access-Control-Max-Age: 1728000\r\n"
+	   "\r\n",
+	   dateHeader());
+}
+
+void RTSPServer::RTSPClientConnection::handleHTTPCmd_TunnelingGET(char const* sessionCookie) {
+  // Record ourself as having this 'session cookie', so that a subsequent HTTP "POST" command (with the same 'session cookie')
+  // can find us:
+  if (fOurRTSPServer.fClientConnectionsForHTTPTunneling == NULL) {
+    fOurRTSPServer.fClientConnectionsForHTTPTunneling = HashTable::create(STRING_HASH_KEYS);
+  }
+  delete[] fOurSessionCookie; fOurSessionCookie = strDup(sessionCookie);
+  fOurRTSPServer.fClientConnectionsForHTTPTunneling->Add(sessionCookie, (void*)this);
+#ifdef DEBUG
+  fprintf(stderr, "Handled HTTP \"GET\" request (client output socket: %d)\n", fClientOutputSocket);
+#endif
+  
+  // Construct our response:
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "HTTP/1.1 200 OK\r\n"
+	   "%s"
+	   "Cache-Control: no-cache\r\n"
+	   "Pragma: no-cache\r\n"
+	   "Content-Type: application/x-rtsp-tunnelled\r\n"
+	   "\r\n",
+	   dateHeader());
+}
+
+Boolean RTSPServer::RTSPClientConnection
+::handleHTTPCmd_TunnelingPOST(char const* sessionCookie, unsigned char const* extraData, unsigned extraDataSize) {
+  // Use the "sessionCookie" string to look up the separate "RTSPClientConnection" object that should have been used to handle
+  // an earlier HTTP "GET" request:
+  if (fOurRTSPServer.fClientConnectionsForHTTPTunneling == NULL) {
+    fOurRTSPServer.fClientConnectionsForHTTPTunneling = HashTable::create(STRING_HASH_KEYS);
+  }
+  RTSPServer::RTSPClientConnection* prevClientConnection
+    = (RTSPServer::RTSPClientConnection*)(fOurRTSPServer.fClientConnectionsForHTTPTunneling->Lookup(sessionCookie));
+  if (prevClientConnection == NULL || prevClientConnection == this) {
+    // Either there was no previous HTTP "GET" request, or it was on the same connection; treat this "POST" request as bad:
+    handleHTTPCmd_notSupported();
+    fIsActive = False; // triggers deletion of ourself
+    return False;
+  }
+#ifdef DEBUG
+  fprintf(stderr, "Handled HTTP \"POST\" request (client input socket: %d)\n", fClientInputSocket);
+#endif
+  
+  // Change the previous "RTSPClientSession" object's input socket to ours.  It will be used for subsequent requests:
+  prevClientConnection->changeClientInputSocket(fClientInputSocket, extraData, extraDataSize);
+  fClientInputSocket = fClientOutputSocket = -1; // so the socket doesn't get closed when we get deleted
+  return True;
+}
+
+void RTSPServer::RTSPClientConnection::handleHTTPCmd_StreamingGET(char const* /*urlSuffix*/, char const* /*fullRequestStr*/) {
+  // By default, we don't support requests to access streams via HTTP:
+  handleHTTPCmd_notSupported();
+}
+
+void RTSPServer::RTSPClientConnection::resetRequestBuffer() {
+  ClientConnection::resetRequestBuffer();
+  
+  fLastCRLF = &fRequestBuffer[-3]; // hack: Ensures that we don't think we have end-of-msg if the data starts with <CR><LF>
+  fBase64RemainderCount = 0;
+}
+
+void RTSPServer::RTSPClientConnection::closeSocketsRTSP() {
+  // First, tell our server to stop any streaming that it might be doing over our output socket:
+  fOurRTSPServer.stopTCPStreamingOnSocket(fClientOutputSocket);
+
+  // Turn off background handling on our input socket (and output socket, if different); then close it (or them):
+  if (fClientOutputSocket != fClientInputSocket) {
+    envir().taskScheduler().disableBackgroundHandling(fClientOutputSocket);
+    ::closeSocket(fClientOutputSocket);
+  }
+  fClientOutputSocket = -1;
+  
+  closeSockets(); // closes fClientInputSocket
+}
+
+void RTSPServer::RTSPClientConnection::handleAlternativeRequestByte(void* instance, u_int8_t requestByte) {
+  RTSPClientConnection* connection = (RTSPClientConnection*)instance;
+  connection->handleAlternativeRequestByte1(requestByte);
+}
+
+void RTSPServer::RTSPClientConnection::handleAlternativeRequestByte1(u_int8_t requestByte) {
+  if (requestByte == 0xFF) {
+    // Hack: The new handler of the input TCP socket encountered an error reading it.  Indicate this:
+    handleRequestBytes(-1);
+  } else if (requestByte == 0xFE) {
+    // Another hack: The new handler of the input TCP socket no longer needs it, so take back control of it:
+    envir().taskScheduler().setBackgroundHandling(fClientInputSocket, SOCKET_READABLE|SOCKET_EXCEPTION,
+						  incomingRequestHandler, this);
+  } else {
+    // Normal case: Add this character to our buffer; then try to handle the data that we have buffered so far:
+    if (fRequestBufferBytesLeft == 0 || fRequestBytesAlreadySeen >= REQUEST_BUFFER_SIZE) return;
+    fRequestBuffer[fRequestBytesAlreadySeen] = requestByte;
+    handleRequestBytes(1);
+  }
+}
+
+void RTSPServer::RTSPClientConnection::handleRequestBytes(int newBytesRead) {
+  int numBytesRemaining = 0;
+  ++fRecursionCount;
+  
+  do {
+    RTSPServer::RTSPClientSession* clientSession = NULL;
+
+    if (newBytesRead < 0 || (unsigned)newBytesRead >= fRequestBufferBytesLeft) {
+      // Either the client socket has died, or the request was too big for us.
+      // Terminate this connection:
+#ifdef DEBUG
+      fprintf(stderr, "RTSPClientConnection[%p]::handleRequestBytes() read %d new bytes (of %d); terminating connection!\n", this, newBytesRead, fRequestBufferBytesLeft);
+#endif
+      fIsActive = False;
+      break;
+    }
+    
+    Boolean endOfMsg = False;
+    unsigned char* ptr = &fRequestBuffer[fRequestBytesAlreadySeen];
+#ifdef DEBUG
+    ptr[newBytesRead] = '\0';
+    fprintf(stderr, "RTSPClientConnection[%p]::handleRequestBytes() %s %d new bytes:%s\n",
+	    this, numBytesRemaining > 0 ? "processing" : "read", newBytesRead, ptr);
+#endif
+    
+    if (fClientOutputSocket != fClientInputSocket && numBytesRemaining == 0) {
+      // We're doing RTSP-over-HTTP tunneling, and input commands are assumed to have been Base64-encoded.
+      // We therefore Base64-decode as much of this new data as we can (i.e., up to a multiple of 4 bytes).
+      
+      // But first, we remove any whitespace that may be in the input data:
+      unsigned toIndex = 0;
+      for (int fromIndex = 0; fromIndex < newBytesRead; ++fromIndex) {
+	char c = ptr[fromIndex];
+	if (!(c == ' ' || c == '\t' || c == '\r' || c == '\n')) { // not 'whitespace': space,tab,CR,NL
+	  ptr[toIndex++] = c;
+	}
+      }
+      newBytesRead = toIndex;
+      
+      unsigned numBytesToDecode = fBase64RemainderCount + newBytesRead;
+      unsigned newBase64RemainderCount = numBytesToDecode%4;
+      numBytesToDecode -= newBase64RemainderCount;
+      if (numBytesToDecode > 0) {
+	ptr[newBytesRead] = '\0';
+	unsigned decodedSize;
+	unsigned char* decodedBytes = base64Decode((char const*)(ptr-fBase64RemainderCount), numBytesToDecode, decodedSize);
+#ifdef DEBUG
+	fprintf(stderr, "Base64-decoded %d input bytes into %d new bytes:", numBytesToDecode, decodedSize);
+	for (unsigned k = 0; k < decodedSize; ++k) fprintf(stderr, "%c", decodedBytes[k]);
+	fprintf(stderr, "\n");
+#endif
+	
+	// Copy the new decoded bytes in place of the old ones (we can do this because there are fewer decoded bytes than original):
+	unsigned char* to = ptr-fBase64RemainderCount;
+	for (unsigned i = 0; i < decodedSize; ++i) *to++ = decodedBytes[i];
+	
+	// Then copy any remaining (undecoded) bytes to the end:
+	for (unsigned j = 0; j < newBase64RemainderCount; ++j) *to++ = (ptr-fBase64RemainderCount+numBytesToDecode)[j];
+	
+	newBytesRead = decodedSize - fBase64RemainderCount + newBase64RemainderCount;
+	  // adjust to allow for the size of the new decoded data (+ remainder)
+	delete[] decodedBytes;
+      }
+      fBase64RemainderCount = newBase64RemainderCount;
+    }
+    
+    unsigned char* tmpPtr = fLastCRLF + 2;
+    if (fBase64RemainderCount == 0) { // no more Base-64 bytes remain to be read/decoded
+      // Look for the end of the message: <CR><LF><CR><LF>
+      if (tmpPtr < fRequestBuffer) tmpPtr = fRequestBuffer;
+      while (tmpPtr < &ptr[newBytesRead-1]) {
+	if (*tmpPtr == '\r' && *(tmpPtr+1) == '\n') {
+	  if (tmpPtr - fLastCRLF == 2) { // This is it:
+	    endOfMsg = True;
+	    break;
+	  }
+	  fLastCRLF = tmpPtr;
+	}
+	++tmpPtr;
+      }
+    }
+    
+    fRequestBufferBytesLeft -= newBytesRead;
+    fRequestBytesAlreadySeen += newBytesRead;
+    
+    if (!endOfMsg) break; // subsequent reads will be needed to complete the request
+    
+    // Parse the request string into command name and 'CSeq', then handle the command:
+    fRequestBuffer[fRequestBytesAlreadySeen] = '\0';
+    char cmdName[RTSP_PARAM_STRING_MAX];
+    char urlPreSuffix[RTSP_PARAM_STRING_MAX];
+    char urlSuffix[RTSP_PARAM_STRING_MAX];
+    char cseq[RTSP_PARAM_STRING_MAX];
+    char sessionIdStr[RTSP_PARAM_STRING_MAX];
+    unsigned contentLength = 0;
+    Boolean playAfterSetup = False;
+    fLastCRLF[2] = '\0'; // temporarily, for parsing
+    Boolean parseSucceeded = parseRTSPRequestString((char*)fRequestBuffer, fLastCRLF+2 - fRequestBuffer,
+						    cmdName, sizeof cmdName,
+						    urlPreSuffix, sizeof urlPreSuffix,
+						    urlSuffix, sizeof urlSuffix,
+						    cseq, sizeof cseq,
+						    sessionIdStr, sizeof sessionIdStr,
+						    contentLength);
+    fLastCRLF[2] = '\r'; // restore its value
+    // Check first for a bogus "Content-Length" value that would cause a pointer wraparound:
+    if (tmpPtr + 2 + contentLength < tmpPtr + 2) {
+#ifdef DEBUG
+      fprintf(stderr, "parseRTSPRequestString() returned a bogus \"Content-Length:\" value: 0x%x (%d)\n", contentLength, (int)contentLength);
+#endif
+      contentLength = 0;
+      parseSucceeded = False;
+    }
+    if (parseSucceeded) {
+#ifdef DEBUG
+      fprintf(stderr, "parseRTSPRequestString() succeeded, returning cmdName \"%s\", urlPreSuffix \"%s\", urlSuffix \"%s\", CSeq \"%s\", Content-Length %u, with %d bytes following the message.\n", cmdName, urlPreSuffix, urlSuffix, cseq, contentLength, ptr + newBytesRead - (tmpPtr + 2));
+#endif
+      // If there was a "Content-Length:" header, then make sure we've received all of the data that it specified:
+      if (ptr + newBytesRead < tmpPtr + 2 + contentLength) break; // we still need more data; subsequent reads will give it to us 
+      
+      // If the request included a "Session:" id, and it refers to a client session that's
+      // current ongoing, then use this command to indicate 'liveness' on that client session:
+      Boolean const requestIncludedSessionId = sessionIdStr[0] != '\0';
+      if (requestIncludedSessionId) {
+	clientSession
+	  = (RTSPServer::RTSPClientSession*)(fOurRTSPServer.lookupClientSession(sessionIdStr));
+	if (clientSession != NULL) clientSession->noteLiveness();
+      }
+    
+      // We now have a complete RTSP request.
+      // Handle the specified command (beginning with commands that are session-independent):
+      fCurrentCSeq = cseq;
+      if (strcmp(cmdName, "OPTIONS") == 0) {
+	// If the "OPTIONS" command included a "Session:" id for a session that doesn't exist,
+	// then treat this as an error:
+	if (requestIncludedSessionId && clientSession == NULL) {
+#ifdef DEBUG
+	  fprintf(stderr, "Calling handleCmd_sessionNotFound() (case 1)\n");
+#endif
+	  handleCmd_sessionNotFound();
+	} else {
+	  // Normal case:
+	  handleCmd_OPTIONS();
+	}
+      } else if (urlPreSuffix[0] == '\0' && urlSuffix[0] == '*' && urlSuffix[1] == '\0') {
+	// The special "*" URL means: an operation on the entire server.  This works only for GET_PARAMETER and SET_PARAMETER:
+	if (strcmp(cmdName, "GET_PARAMETER") == 0) {
+	  handleCmd_GET_PARAMETER((char const*)fRequestBuffer);
+	} else if (strcmp(cmdName, "SET_PARAMETER") == 0) {
+	  handleCmd_SET_PARAMETER((char const*)fRequestBuffer);
+	} else {
+	  handleCmd_notSupported();
+	}
+      } else if (strcmp(cmdName, "DESCRIBE") == 0) {
+	handleCmd_DESCRIBE(urlPreSuffix, urlSuffix, (char const*)fRequestBuffer);
+      } else if (strcmp(cmdName, "SETUP") == 0) {
+	Boolean areAuthenticated = True;
+
+	if (!requestIncludedSessionId) {
+	  // No session id was present in the request.
+	  // So create a new "RTSPClientSession" object for this request.
+
+	  // But first, make sure that we're authenticated to perform this command:
+	  char urlTotalSuffix[2*RTSP_PARAM_STRING_MAX];
+	      // enough space for urlPreSuffix/urlSuffix'\0'
+	  urlTotalSuffix[0] = '\0';
+	  if (urlPreSuffix[0] != '\0') {
+	    strcat(urlTotalSuffix, urlPreSuffix);
+	    strcat(urlTotalSuffix, "/");
+	  }
+	  strcat(urlTotalSuffix, urlSuffix);
+	  if (authenticationOK("SETUP", urlTotalSuffix, (char const*)fRequestBuffer)) {
+	    clientSession
+	      = (RTSPServer::RTSPClientSession*)fOurRTSPServer.createNewClientSessionWithId();
+	  } else {
+	    areAuthenticated = False;
+	  }
+	}
+	if (clientSession != NULL) {
+	  clientSession->handleCmd_SETUP(this, urlPreSuffix, urlSuffix, (char const*)fRequestBuffer);
+	  playAfterSetup = clientSession->fStreamAfterSETUP;
+	} else if (areAuthenticated) {
+#ifdef DEBUG
+	  fprintf(stderr, "Calling handleCmd_sessionNotFound() (case 2)\n");
+#endif
+	  handleCmd_sessionNotFound();
+	}
+      } else if (strcmp(cmdName, "TEARDOWN") == 0
+		 || strcmp(cmdName, "PLAY") == 0
+		 || strcmp(cmdName, "PAUSE") == 0
+		 || strcmp(cmdName, "GET_PARAMETER") == 0
+		 || strcmp(cmdName, "SET_PARAMETER") == 0) {
+	if (clientSession != NULL) {
+	  clientSession->handleCmd_withinSession(this, cmdName, urlPreSuffix, urlSuffix, (char const*)fRequestBuffer);
+	} else {
+#ifdef DEBUG
+	  fprintf(stderr, "Calling handleCmd_sessionNotFound() (case 3)\n");
+#endif
+	  handleCmd_sessionNotFound();
+	}
+      } else if (strcmp(cmdName, "REGISTER") == 0 || strcmp(cmdName, "DEREGISTER") == 0) {
+	// Because - unlike other commands - an implementation of this command needs
+	// the entire URL, we re-parse the command to get it:
+	char* url = strDupSize((char*)fRequestBuffer);
+	if (sscanf((char*)fRequestBuffer, "%*s %s", url) == 1) {
+	  // Check for special command-specific parameters in a "Transport:" header:
+	  Boolean reuseConnection, deliverViaTCP;
+	  char* proxyURLSuffix;
+	  parseTransportHeaderForREGISTER((const char*)fRequestBuffer, reuseConnection, deliverViaTCP, proxyURLSuffix);
+
+	  handleCmd_REGISTER(cmdName, url, urlSuffix, (char const*)fRequestBuffer, reuseConnection, deliverViaTCP, proxyURLSuffix);
+	  delete[] proxyURLSuffix;
+	} else {
+	  handleCmd_bad();
+	}
+	delete[] url;
+      } else {
+	// The command is one that we don't handle:
+	handleCmd_notSupported();
+      }
+    } else {
+#ifdef DEBUG
+      fprintf(stderr, "parseRTSPRequestString() failed; checking now for HTTP commands (for RTSP-over-HTTP tunneling)...\n");
+#endif
+      // The request was not (valid) RTSP, but check for a special case: HTTP commands (for setting up RTSP-over-HTTP tunneling):
+      char sessionCookie[RTSP_PARAM_STRING_MAX];
+      char acceptStr[RTSP_PARAM_STRING_MAX];
+      *fLastCRLF = '\0'; // temporarily, for parsing
+      parseSucceeded = parseHTTPRequestString(cmdName, sizeof cmdName,
+					      urlSuffix, sizeof urlPreSuffix,
+					      sessionCookie, sizeof sessionCookie,
+					      acceptStr, sizeof acceptStr);
+      *fLastCRLF = '\r';
+      if (parseSucceeded) {
+#ifdef DEBUG
+	fprintf(stderr, "parseHTTPRequestString() succeeded, returning cmdName \"%s\", urlSuffix \"%s\", sessionCookie \"%s\", acceptStr \"%s\"\n", cmdName, urlSuffix, sessionCookie, acceptStr);
+#endif
+	// Check that the HTTP command is valid for RTSP-over-HTTP tunneling: There must be a 'session cookie'.
+	Boolean isValidHTTPCmd = True;
+	if (strcmp(cmdName, "OPTIONS") == 0) {
+	  handleHTTPCmd_OPTIONS();
+	} else if (sessionCookie[0] == '\0') {
+	  // There was no "x-sessioncookie:" header.  If there was an "Accept: application/x-rtsp-tunnelled" header,
+	  // then this is a bad tunneling request.  Otherwise, assume that it's an attempt to access the stream via HTTP.
+	  if (strcmp(acceptStr, "application/x-rtsp-tunnelled") == 0) {
+	    isValidHTTPCmd = False;
+	  } else {
+	    handleHTTPCmd_StreamingGET(urlSuffix, (char const*)fRequestBuffer);
+	  }
+	} else if (strcmp(cmdName, "GET") == 0) {
+	  handleHTTPCmd_TunnelingGET(sessionCookie);
+	} else if (strcmp(cmdName, "POST") == 0) {
+	  // We might have received additional data following the HTTP "POST" command - i.e., the first Base64-encoded RTSP command.
+	  // Check for this, and handle it if it exists:
+	  unsigned char const* extraData = fLastCRLF+4;
+	  unsigned extraDataSize = &fRequestBuffer[fRequestBytesAlreadySeen] - extraData;
+	  if (handleHTTPCmd_TunnelingPOST(sessionCookie, extraData, extraDataSize)) {
+	    // We don't respond to the "POST" command, and we go away:
+	    fIsActive = False;
+	    break;
+	  }
+	} else {
+	  isValidHTTPCmd = False;
+	}
+	if (!isValidHTTPCmd) {
+	  handleHTTPCmd_notSupported();
+	}
+      } else {
+#ifdef DEBUG
+	fprintf(stderr, "parseHTTPRequestString() failed!\n");
+#endif
+	handleCmd_bad();
+      }
+    }
+    
+#ifdef DEBUG
+    fprintf(stderr, "sending response: %s", fResponseBuffer);
+#endif
+    send(fClientOutputSocket, (char const*)fResponseBuffer, strlen((char*)fResponseBuffer), 0);
+    
+    if (playAfterSetup) {
+      // The client has asked for streaming to commence now, rather than after a
+      // subsequent "PLAY" command.  So, simulate the effect of a "PLAY" command:
+      clientSession->handleCmd_withinSession(this, "PLAY", urlPreSuffix, urlSuffix, (char const*)fRequestBuffer);
+    }
+    
+    // Check whether there are extra bytes remaining in the buffer, after the end of the request (a rare case).
+    // If so, move them to the front of our buffer, and keep processing it, because it might be a following, pipelined request.
+    unsigned requestSize = (fLastCRLF+4-fRequestBuffer) + contentLength;
+    numBytesRemaining = fRequestBytesAlreadySeen - requestSize;
+    resetRequestBuffer(); // to prepare for any subsequent request
+    
+    if (numBytesRemaining > 0) {
+      memmove(fRequestBuffer, &fRequestBuffer[requestSize], numBytesRemaining);
+      newBytesRead = numBytesRemaining;
+    }
+  } while (numBytesRemaining > 0);
+  
+  --fRecursionCount;
+  if (!fIsActive) {
+    if (fRecursionCount > 0) closeSockets(); else delete this;
+    // Note: The "fRecursionCount" test is for a pathological situation where we reenter the event loop and get called recursively
+    // while handling a command (e.g., while handling a "DESCRIBE", to get a SDP description).
+    // In such a case we don't want to actually delete ourself until we leave the outermost call.
+  }
+}
+
+#define SKIP_WHITESPACE while (*fields != '\0' && (*fields == ' ' || *fields == '\t')) ++fields
+
+static Boolean parseAuthorizationHeader(char const* buf,
+					char const*& username,
+					char const*& realm,
+					char const*& nonce, char const*& uri,
+					char const*& response) {
+  // Initialize the result parameters to default values:
+  username = realm = nonce = uri = response = NULL;
+  
+  // First, find "Authorization:"
+  while (1) {
+    if (*buf == '\0') return False; // not found
+    if (_strncasecmp(buf, "Authorization: Digest ", 22) == 0) break;
+    ++buf;
+  }
+  
+  // Then, run through each of the fields, looking for ones we handle:
+  char const* fields = buf + 22;
+  char* parameter = strDupSize(fields);
+  char* value = strDupSize(fields);
+  char* p;
+  Boolean success;
+  do {
+    // Parse: <parameter>="<value>"
+    success = False;
+    parameter[0] = value[0] = '\0';
+    SKIP_WHITESPACE;
+    for (p = parameter; *fields != '\0' && *fields != ' ' && *fields != '\t' && *fields != '='; ) *p++ = *fields++;
+    SKIP_WHITESPACE;
+    if (*fields++ != '=') break; // parsing failed
+    *p = '\0'; // complete parsing <parameter>
+    SKIP_WHITESPACE;
+    if (*fields++ != '"') break; // parsing failed
+    for (p = value; *fields != '\0' && *fields != '"'; ) *p++ = *fields++;
+    if (*fields++ != '"') break; // parsing failed
+    *p = '\0'; // complete parsing <value>
+    SKIP_WHITESPACE;
+    success = True;
+
+    // Copy values for parameters that we understand:
+    if (strcmp(parameter, "username") == 0) {
+      username = strDup(value);
+    } else if (strcmp(parameter, "realm") == 0) {
+      realm = strDup(value);
+    } else if (strcmp(parameter, "nonce") == 0) {
+      nonce = strDup(value);
+    } else if (strcmp(parameter, "uri") == 0) {
+      uri = strDup(value);
+    } else if (strcmp(parameter, "response") == 0) {
+      response = strDup(value);
+    }
+
+    // Check for a ',', indicating that more <parameter>="<value>" pairs follow:
+  } while (*fields++ == ',');
+
+  delete[] parameter; delete[] value;
+  return success;
+}
+
+Boolean RTSPServer::RTSPClientConnection
+::authenticationOK(char const* cmdName, char const* urlSuffix, char const* fullRequestStr) {
+  if (!fOurRTSPServer.specialClientAccessCheck(fClientInputSocket, fClientAddr, urlSuffix)) {
+    setRTSPResponse("401 Unauthorized");
+    return False;
+  }
+  
+  // If we weren't set up with an authentication database, we're OK:
+  UserAuthenticationDatabase* authDB = fOurRTSPServer.getAuthenticationDatabaseForCommand(cmdName);
+  if (authDB == NULL) return True;
+  
+  char const* username = NULL; char const* realm = NULL; char const* nonce = NULL;
+  char const* uri = NULL; char const* response = NULL;
+  Boolean success = False;
+  
+  do {
+    // To authenticate, we first need to have a nonce set up
+    // from a previous attempt:
+    if (fCurrentAuthenticator.nonce() == NULL) break;
+    
+    // Next, the request needs to contain an "Authorization:" header,
+    // containing a username, (our) realm, (our) nonce, uri,
+    // and response string:
+    if (!parseAuthorizationHeader(fullRequestStr,
+				  username, realm, nonce, uri, response)
+	|| username == NULL
+	|| realm == NULL || strcmp(realm, fCurrentAuthenticator.realm()) != 0
+	|| nonce == NULL || strcmp(nonce, fCurrentAuthenticator.nonce()) != 0
+	|| uri == NULL || response == NULL) {
+      break;
+    }
+    
+    // Next, the username has to be known to us:
+    char const* password = authDB->lookupPassword(username);
+#ifdef DEBUG
+    fprintf(stderr, "lookupPassword(%s) returned password %s\n", username, password);
+#endif
+    if (password == NULL) break;
+    fCurrentAuthenticator.setUsernameAndPassword(username, password, authDB->passwordsAreMD5());
+    
+    // Finally, compute a digest response from the information that we have,
+    // and compare it to the one that we were given:
+    char const* ourResponse
+      = fCurrentAuthenticator.computeDigestResponse(cmdName, uri);
+    success = (strcmp(ourResponse, response) == 0);
+    fCurrentAuthenticator.reclaimDigestResponse(ourResponse);
+  } while (0);
+  
+  delete[] (char*)realm; delete[] (char*)nonce;
+  delete[] (char*)uri; delete[] (char*)response;
+  
+  if (success) {
+    // The user has been authenticated.
+    // Now allow subclasses a chance to validate the user against the IP address and/or URL suffix.
+    if (!fOurRTSPServer.specialClientUserAccessCheck(fClientInputSocket, fClientAddr, urlSuffix, username)) {
+      // Note: We don't return a "WWW-Authenticate" header here, because the user is valid,
+      // even though the server has decided that they should not have access.
+      setRTSPResponse("401 Unauthorized");
+      delete[] (char*)username;
+      return False;
+    }
+  }
+  delete[] (char*)username;
+  if (success) return True;
+  
+  // If we get here, we failed to authenticate the user.
+  // Send back a "401 Unauthorized" response, with a new random nonce:
+  fCurrentAuthenticator.setRealmAndRandomNonce(authDB->realm());
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "RTSP/1.0 401 Unauthorized\r\n"
+	   "CSeq: %s\r\n"
+	   "%s"
+	   "WWW-Authenticate: Digest realm=\"%s\", nonce=\"%s\"\r\n\r\n",
+	   fCurrentCSeq,
+	   dateHeader(),
+	   fCurrentAuthenticator.realm(), fCurrentAuthenticator.nonce());
+  return False;
+}
+
+void RTSPServer::RTSPClientConnection
+::setRTSPResponse(char const* responseStr) {
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "RTSP/1.0 %s\r\n"
+	   "CSeq: %s\r\n"
+	   "%s\r\n",
+	   responseStr,
+	   fCurrentCSeq,
+	   dateHeader());
+}
+
+void RTSPServer::RTSPClientConnection
+::setRTSPResponse(char const* responseStr, u_int32_t sessionId) {
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "RTSP/1.0 %s\r\n"
+	   "CSeq: %s\r\n"
+	   "%s"
+	   "Session: %08X\r\n\r\n",
+	   responseStr,
+	   fCurrentCSeq,
+	   dateHeader(),
+	   sessionId);
+}
+
+void RTSPServer::RTSPClientConnection
+::setRTSPResponse(char const* responseStr, char const* contentStr) {
+  if (contentStr == NULL) contentStr = "";
+  unsigned const contentLen = strlen(contentStr);
+  
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "RTSP/1.0 %s\r\n"
+	   "CSeq: %s\r\n"
+	   "%s"
+	   "Content-Length: %d\r\n\r\n"
+	   "%s",
+	   responseStr,
+	   fCurrentCSeq,
+	   dateHeader(),
+	   contentLen,
+	   contentStr);
+}
+
+void RTSPServer::RTSPClientConnection
+::setRTSPResponse(char const* responseStr, u_int32_t sessionId, char const* contentStr) {
+  if (contentStr == NULL) contentStr = "";
+  unsigned const contentLen = strlen(contentStr);
+  
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "RTSP/1.0 %s\r\n"
+	   "CSeq: %s\r\n"
+	   "%s"
+	   "Session: %08X\r\n"
+	   "Content-Length: %d\r\n\r\n"
+	   "%s",
+	   responseStr,
+	   fCurrentCSeq,
+	   dateHeader(),
+	   sessionId,
+	   contentLen,
+	   contentStr);
+}
+
+void RTSPServer::RTSPClientConnection
+::changeClientInputSocket(int newSocketNum, unsigned char const* extraData, unsigned extraDataSize) {
+  envir().taskScheduler().disableBackgroundHandling(fClientInputSocket);
+  fClientInputSocket = newSocketNum;
+  envir().taskScheduler().setBackgroundHandling(fClientInputSocket, SOCKET_READABLE|SOCKET_EXCEPTION,
+						incomingRequestHandler, this);
+  
+  // Also write any extra data to our buffer, and handle it:
+  if (extraDataSize > 0 && extraDataSize <= fRequestBufferBytesLeft/*sanity check; should always be true*/) {
+    unsigned char* ptr = &fRequestBuffer[fRequestBytesAlreadySeen];
+    for (unsigned i = 0; i < extraDataSize; ++i) {
+      ptr[i] = extraData[i];
+    }
+    handleRequestBytes(extraDataSize);
+  }
+}
+
+
+////////// RTSPServer::RTSPClientSession implementation //////////
+
+RTSPServer::RTSPClientSession
+::RTSPClientSession(RTSPServer& ourServer, u_int32_t sessionId)
+  : GenericMediaServer::ClientSession(ourServer, sessionId),
+    fOurRTSPServer(ourServer), fIsMulticast(False), fStreamAfterSETUP(False),
+    fTCPStreamIdCount(0), fNumStreamStates(0), fStreamStates(NULL) {
+}
+
+RTSPServer::RTSPClientSession::~RTSPClientSession() {
+  reclaimStreamStates();
+}
+
+void RTSPServer::RTSPClientSession::deleteStreamByTrack(unsigned trackNum) {
+  if (trackNum >= fNumStreamStates) return; // sanity check; shouldn't happen
+  if (fStreamStates[trackNum].subsession != NULL) {
+    fStreamStates[trackNum].subsession->deleteStream(fOurSessionId, fStreamStates[trackNum].streamToken);
+    fStreamStates[trackNum].subsession = NULL;
+  }
+  
+  // Optimization: If all subsessions have now been deleted, then we can delete ourself now:
+  Boolean noSubsessionsRemain = True;
+  for (unsigned i = 0; i < fNumStreamStates; ++i) {
+    if (fStreamStates[i].subsession != NULL) {
+      noSubsessionsRemain = False;
+      break;
+    }
+  }
+  if (noSubsessionsRemain) delete this;
+}
+
+void RTSPServer::RTSPClientSession::reclaimStreamStates() {
+  for (unsigned i = 0; i < fNumStreamStates; ++i) {
+    if (fStreamStates[i].subsession != NULL) {
+      fOurRTSPServer.unnoteTCPStreamingOnSocket(fStreamStates[i].tcpSocketNum, this, i);
+      fStreamStates[i].subsession->deleteStream(fOurSessionId, fStreamStates[i].streamToken);
+    }
+  }
+  delete[] fStreamStates; fStreamStates = NULL;
+  fNumStreamStates = 0;
+}
+
+typedef enum StreamingMode {
+  RTP_UDP,
+  RTP_TCP,
+  RAW_UDP
+} StreamingMode;
+
+static void parseTransportHeader(char const* buf,
+				 StreamingMode& streamingMode,
+				 char*& streamingModeString,
+				 char*& destinationAddressStr,
+				 u_int8_t& destinationTTL,
+				 portNumBits& clientRTPPortNum, // if UDP
+				 portNumBits& clientRTCPPortNum, // if UDP
+				 unsigned char& rtpChannelId, // if TCP
+				 unsigned char& rtcpChannelId // if TCP
+				 ) {
+  // Initialize the result parameters to default values:
+  streamingMode = RTP_UDP;
+  streamingModeString = NULL;
+  destinationAddressStr = NULL;
+  destinationTTL = 255;
+  clientRTPPortNum = 0;
+  clientRTCPPortNum = 1;
+  rtpChannelId = rtcpChannelId = 0xFF;
+  
+  portNumBits p1, p2;
+  unsigned ttl, rtpCid, rtcpCid;
+  
+  // First, find "Transport:"
+  while (1) {
+    if (*buf == '\0') return; // not found
+    if (*buf == '\r' && *(buf+1) == '\n' && *(buf+2) == '\r') return; // end of the headers => not found
+    if (_strncasecmp(buf, "Transport:", 10) == 0) break;
+    ++buf;
+  }
+  
+  // Then, run through each of the fields, looking for ones we handle:
+  char const* fields = buf + 10;
+  while (*fields == ' ') ++fields;
+  char* field = strDupSize(fields);
+  while (sscanf(fields, "%[^;\r\n]", field) == 1) {
+    if (strcmp(field, "RTP/AVP/TCP") == 0) {
+      streamingMode = RTP_TCP;
+    } else if (strcmp(field, "RAW/RAW/UDP") == 0 ||
+	       strcmp(field, "MP2T/H2221/UDP") == 0) {
+      streamingMode = RAW_UDP;
+      streamingModeString = strDup(field);
+    } else if (_strncasecmp(field, "destination=", 12) == 0) {
+      delete[] destinationAddressStr;
+      destinationAddressStr = strDup(field+12);
+    } else if (sscanf(field, "ttl%u", &ttl) == 1) {
+      destinationTTL = (u_int8_t)ttl;
+    } else if (sscanf(field, "client_port=%hu-%hu", &p1, &p2) == 2) {
+      clientRTPPortNum = p1;
+      clientRTCPPortNum = streamingMode == RAW_UDP ? 0 : p2; // ignore the second port number if the client asked for raw UDP
+    } else if (sscanf(field, "client_port=%hu", &p1) == 1) {
+      clientRTPPortNum = p1;
+      clientRTCPPortNum = streamingMode == RAW_UDP ? 0 : p1 + 1;
+    } else if (sscanf(field, "interleaved=%u-%u", &rtpCid, &rtcpCid) == 2) {
+      rtpChannelId = (unsigned char)rtpCid;
+      rtcpChannelId = (unsigned char)rtcpCid;
+    }
+    
+    fields += strlen(field);
+    while (*fields == ';' || *fields == ' ' || *fields == '\t') ++fields; // skip over separating ';' chars or whitespace
+    if (*fields == '\0' || *fields == '\r' || *fields == '\n') break;
+  }
+  delete[] field;
+}
+
+static Boolean parsePlayNowHeader(char const* buf) {
+  // Find "x-playNow:" header, if present
+  while (1) {
+    if (*buf == '\0') return False; // not found
+    if (_strncasecmp(buf, "x-playNow:", 10) == 0) break;
+    ++buf;
+  }
+  
+  return True;
+}
+
+void RTSPServer::RTSPClientSession
+::handleCmd_SETUP(RTSPServer::RTSPClientConnection* ourClientConnection,
+		  char const* urlPreSuffix, char const* urlSuffix, char const* fullRequestStr) {
+  // Normally, "urlPreSuffix" should be the session (stream) name, and "urlSuffix" should be the subsession (track) name.
+  // However (being "liberal in what we accept"), we also handle 'aggregate' SETUP requests (i.e., without a track name),
+  // in the special case where we have only a single track.  I.e., in this case, we also handle:
+  //    "urlPreSuffix" is empty and "urlSuffix" is the session (stream) name, or
+  //    "urlPreSuffix" concatenated with "urlSuffix" (with "/" inbetween) is the session (stream) name.
+  char const* streamName = urlPreSuffix; // in the normal case
+  char const* trackId = urlSuffix; // in the normal case
+  char* concatenatedStreamName = NULL; // in the normal case
+  
+  do {
+    // First, make sure the specified stream name exists:
+    ServerMediaSession* sms
+      = fOurServer.lookupServerMediaSession(streamName, fOurServerMediaSession == NULL);
+    if (sms == NULL) {
+      // Check for the special case (noted above), before we give up:
+      if (urlPreSuffix[0] == '\0') {
+	streamName = urlSuffix;
+      } else {
+	concatenatedStreamName = new char[strlen(urlPreSuffix) + strlen(urlSuffix) + 2]; // allow for the "/" and the trailing '\0'
+	sprintf(concatenatedStreamName, "%s/%s", urlPreSuffix, urlSuffix);
+	streamName = concatenatedStreamName;
+      }
+      trackId = NULL;
+      
+      // Check again:
+      sms = fOurServer.lookupServerMediaSession(streamName, fOurServerMediaSession == NULL);
+    }
+    if (sms == NULL) {
+      if (fOurServerMediaSession == NULL) {
+	// The client asked for a stream that doesn't exist (and this session descriptor has not been used before):
+	ourClientConnection->handleCmd_notFound();
+      } else {
+	// The client asked for a stream that doesn't exist, but using a stream id for a stream that does exist. Bad request:
+	ourClientConnection->handleCmd_bad();
+      }
+      break;
+    } else {
+      if (fOurServerMediaSession == NULL) {
+	// We're accessing the "ServerMediaSession" for the first time.
+	fOurServerMediaSession = sms;
+	fOurServerMediaSession->incrementReferenceCount();
+      } else if (sms != fOurServerMediaSession) {
+	// The client asked for a stream that's different from the one originally requested for this stream id.  Bad request:
+	ourClientConnection->handleCmd_bad();
+	break;
+      }
+    }
+    
+    if (fStreamStates == NULL) {
+      // This is the first "SETUP" for this session.  Set up our array of states for all of this session's subsessions (tracks):
+      fNumStreamStates = fOurServerMediaSession->numSubsessions();
+      fStreamStates = new struct streamState[fNumStreamStates];
+      
+      ServerMediaSubsessionIterator iter(*fOurServerMediaSession);
+      ServerMediaSubsession* subsession;
+      for (unsigned i = 0; i < fNumStreamStates; ++i) {
+	subsession = iter.next();
+	fStreamStates[i].subsession = subsession;
+	fStreamStates[i].tcpSocketNum = -1; // for now; may get set for RTP-over-TCP streaming
+	fStreamStates[i].streamToken = NULL; // for now; it may be changed by the "getStreamParameters()" call that comes later
+      }
+    }
+    
+    // Look up information for the specified subsession (track):
+    ServerMediaSubsession* subsession = NULL;
+    unsigned trackNum;
+    if (trackId != NULL && trackId[0] != '\0') { // normal case
+      for (trackNum = 0; trackNum < fNumStreamStates; ++trackNum) {
+	subsession = fStreamStates[trackNum].subsession;
+	if (subsession != NULL && strcmp(trackId, subsession->trackId()) == 0) break;
+      }
+      if (trackNum >= fNumStreamStates) {
+	// The specified track id doesn't exist, so this request fails:
+	ourClientConnection->handleCmd_notFound();
+	break;
+      }
+    } else {
+      // Weird case: there was no track id in the URL.
+      // This works only if we have only one subsession:
+      if (fNumStreamStates != 1 || fStreamStates[0].subsession == NULL) {
+	ourClientConnection->handleCmd_bad();
+	break;
+      }
+      trackNum = 0;
+      subsession = fStreamStates[trackNum].subsession;
+    }
+    // ASSERT: subsession != NULL
+    
+    void*& token = fStreamStates[trackNum].streamToken; // alias
+    if (token != NULL) {
+      // We already handled a "SETUP" for this track (to the same client),
+      // so stop any existing streaming of it, before we set it up again:
+      subsession->pauseStream(fOurSessionId, token);
+      fOurRTSPServer.unnoteTCPStreamingOnSocket(fStreamStates[trackNum].tcpSocketNum, this, trackNum);
+      subsession->deleteStream(fOurSessionId, token);
+    }
+
+    // Look for a "Transport:" header in the request string, to extract client parameters:
+    StreamingMode streamingMode;
+    char* streamingModeString = NULL; // set when RAW_UDP streaming is specified
+    char* clientsDestinationAddressStr;
+    u_int8_t clientsDestinationTTL;
+    portNumBits clientRTPPortNum, clientRTCPPortNum;
+    unsigned char rtpChannelId, rtcpChannelId;
+    parseTransportHeader(fullRequestStr, streamingMode, streamingModeString,
+			 clientsDestinationAddressStr, clientsDestinationTTL,
+			 clientRTPPortNum, clientRTCPPortNum,
+			 rtpChannelId, rtcpChannelId);
+    if ((streamingMode == RTP_TCP && rtpChannelId == 0xFF) ||
+	(streamingMode != RTP_TCP && ourClientConnection->fClientOutputSocket != ourClientConnection->fClientInputSocket)) {
+      // An anomolous situation, caused by a buggy client.  Either:
+      //     1/ TCP streaming was requested, but with no "interleaving=" fields.  (QuickTime Player sometimes does this.), or
+      //     2/ TCP streaming was not requested, but we're doing RTSP-over-HTTP tunneling (which implies TCP streaming).
+      // In either case, we assume TCP streaming, and set the RTP and RTCP channel ids to proper values:
+      streamingMode = RTP_TCP;
+      rtpChannelId = fTCPStreamIdCount; rtcpChannelId = fTCPStreamIdCount+1;
+    }
+    if (streamingMode == RTP_TCP) fTCPStreamIdCount += 2;
+    
+    Port clientRTPPort(clientRTPPortNum);
+    Port clientRTCPPort(clientRTCPPortNum);
+    
+    // Next, check whether a "Range:" or "x-playNow:" header is present in the request.
+    // This isn't legal, but some clients do this to combine "SETUP" and "PLAY":
+    double rangeStart = 0.0, rangeEnd = 0.0;
+    char* absStart = NULL; char* absEnd = NULL;
+    Boolean startTimeIsNow;
+    if (parseRangeHeader(fullRequestStr, rangeStart, rangeEnd, absStart, absEnd, startTimeIsNow)) {
+      delete[] absStart; delete[] absEnd;
+      fStreamAfterSETUP = True;
+    } else if (parsePlayNowHeader(fullRequestStr)) {
+      fStreamAfterSETUP = True;
+    } else {
+      fStreamAfterSETUP = False;
+    }
+    
+    // Then, get server parameters from the 'subsession':
+    if (streamingMode == RTP_TCP) {
+      // Note that we'll be streaming over the RTSP TCP connection:
+      fStreamStates[trackNum].tcpSocketNum = ourClientConnection->fClientOutputSocket;
+      fOurRTSPServer.noteTCPStreamingOnSocket(fStreamStates[trackNum].tcpSocketNum, this, trackNum);
+    }
+    netAddressBits destinationAddress = 0;
+    u_int8_t destinationTTL = 255;
+#ifdef RTSP_ALLOW_CLIENT_DESTINATION_SETTING
+    if (clientsDestinationAddressStr != NULL) {
+      // Use the client-provided "destination" address.
+      // Note: This potentially allows the server to be used in denial-of-service
+      // attacks, so don't enable this code unless you're sure that clients are
+      // trusted.
+      destinationAddress = our_inet_addr(clientsDestinationAddressStr);
+    }
+    // Also use the client-provided TTL.
+    destinationTTL = clientsDestinationTTL;
+#endif
+    delete[] clientsDestinationAddressStr;
+    Port serverRTPPort(0);
+    Port serverRTCPPort(0);
+    
+    // Make sure that we transmit on the same interface that's used by the client (in case we're a multi-homed server):
+    struct sockaddr_in sourceAddr; SOCKLEN_T namelen = sizeof sourceAddr;
+    getsockname(ourClientConnection->fClientInputSocket, (struct sockaddr*)&sourceAddr, &namelen);
+    netAddressBits origSendingInterfaceAddr = SendingInterfaceAddr;
+    netAddressBits origReceivingInterfaceAddr = ReceivingInterfaceAddr;
+    // NOTE: The following might not work properly, so we ifdef it out for now:
+#ifdef HACK_FOR_MULTIHOMED_SERVERS
+    ReceivingInterfaceAddr = SendingInterfaceAddr = sourceAddr.sin_addr.s_addr;
+#endif
+    
+    subsession->getStreamParameters(fOurSessionId, ourClientConnection->fClientAddr.sin_addr.s_addr,
+				    clientRTPPort, clientRTCPPort,
+				    fStreamStates[trackNum].tcpSocketNum, rtpChannelId, rtcpChannelId,
+				    destinationAddress, destinationTTL, fIsMulticast,
+				    serverRTPPort, serverRTCPPort,
+				    fStreamStates[trackNum].streamToken);
+    SendingInterfaceAddr = origSendingInterfaceAddr;
+    ReceivingInterfaceAddr = origReceivingInterfaceAddr;
+    
+    AddressString destAddrStr(destinationAddress);
+    AddressString sourceAddrStr(sourceAddr);
+    char timeoutParameterString[100];
+    if (fOurRTSPServer.fReclamationSeconds > 0) {
+      sprintf(timeoutParameterString, ";timeout=%u", fOurRTSPServer.fReclamationSeconds);
+    } else {
+      timeoutParameterString[0] = '\0';
+    }
+    if (fIsMulticast) {
+      switch (streamingMode) {
+          case RTP_UDP: {
+	    snprintf((char*)ourClientConnection->fResponseBuffer, sizeof ourClientConnection->fResponseBuffer,
+		     "RTSP/1.0 200 OK\r\n"
+		     "CSeq: %s\r\n"
+		     "%s"
+		     "Transport: RTP/AVP;multicast;destination=%s;source=%s;port=%d-%d;ttl=%d\r\n"
+		     "Session: %08X%s\r\n\r\n",
+		     ourClientConnection->fCurrentCSeq,
+		     dateHeader(),
+		     destAddrStr.val(), sourceAddrStr.val(), ntohs(serverRTPPort.num()), ntohs(serverRTCPPort.num()), destinationTTL,
+		     fOurSessionId, timeoutParameterString);
+	    break;
+	  }
+          case RTP_TCP: {
+	    // multicast streams can't be sent via TCP
+	    ourClientConnection->handleCmd_unsupportedTransport();
+	    break;
+	  }
+          case RAW_UDP: {
+	    snprintf((char*)ourClientConnection->fResponseBuffer, sizeof ourClientConnection->fResponseBuffer,
+		     "RTSP/1.0 200 OK\r\n"
+		     "CSeq: %s\r\n"
+		     "%s"
+		     "Transport: %s;multicast;destination=%s;source=%s;port=%d;ttl=%d\r\n"
+		     "Session: %08X%s\r\n\r\n",
+		     ourClientConnection->fCurrentCSeq,
+		     dateHeader(),
+		     streamingModeString, destAddrStr.val(), sourceAddrStr.val(), ntohs(serverRTPPort.num()), destinationTTL,
+		     fOurSessionId, timeoutParameterString);
+	    break;
+	  }
+      }
+    } else {
+      switch (streamingMode) {
+          case RTP_UDP: {
+	    snprintf((char*)ourClientConnection->fResponseBuffer, sizeof ourClientConnection->fResponseBuffer,
+		     "RTSP/1.0 200 OK\r\n"
+		     "CSeq: %s\r\n"
+		     "%s"
+		     "Transport: RTP/AVP;unicast;destination=%s;source=%s;client_port=%d-%d;server_port=%d-%d\r\n"
+		     "Session: %08X%s\r\n\r\n",
+		     ourClientConnection->fCurrentCSeq,
+		     dateHeader(),
+		     destAddrStr.val(), sourceAddrStr.val(), ntohs(clientRTPPort.num()), ntohs(clientRTCPPort.num()), ntohs(serverRTPPort.num()), ntohs(serverRTCPPort.num()),
+		     fOurSessionId, timeoutParameterString);
+	    break;
+	  }
+          case RTP_TCP: {
+	    if (!fOurRTSPServer.fAllowStreamingRTPOverTCP) {
+	      ourClientConnection->handleCmd_unsupportedTransport();
+	    } else {
+	      snprintf((char*)ourClientConnection->fResponseBuffer, sizeof ourClientConnection->fResponseBuffer,
+		       "RTSP/1.0 200 OK\r\n"
+		       "CSeq: %s\r\n"
+		       "%s"
+		       "Transport: RTP/AVP/TCP;unicast;destination=%s;source=%s;interleaved=%d-%d\r\n"
+		       "Session: %08X%s\r\n\r\n",
+		       ourClientConnection->fCurrentCSeq,
+		       dateHeader(),
+		       destAddrStr.val(), sourceAddrStr.val(), rtpChannelId, rtcpChannelId,
+		       fOurSessionId, timeoutParameterString);
+	    }
+	    break;
+	  }
+          case RAW_UDP: {
+	    snprintf((char*)ourClientConnection->fResponseBuffer, sizeof ourClientConnection->fResponseBuffer,
+		     "RTSP/1.0 200 OK\r\n"
+		     "CSeq: %s\r\n"
+		     "%s"
+		     "Transport: %s;unicast;destination=%s;source=%s;client_port=%d;server_port=%d\r\n"
+		     "Session: %08X%s\r\n\r\n",
+		     ourClientConnection->fCurrentCSeq,
+		     dateHeader(),
+		     streamingModeString, destAddrStr.val(), sourceAddrStr.val(), ntohs(clientRTPPort.num()), ntohs(serverRTPPort.num()),
+		     fOurSessionId, timeoutParameterString);
+	    break;
+	  }
+      }
+    }
+    delete[] streamingModeString;
+  } while (0);
+  
+  delete[] concatenatedStreamName;
+}
+
+void RTSPServer::RTSPClientSession
+::handleCmd_withinSession(RTSPServer::RTSPClientConnection* ourClientConnection,
+			  char const* cmdName,
+			  char const* urlPreSuffix, char const* urlSuffix,
+			  char const* fullRequestStr) {
+  // This will either be:
+  // - a non-aggregated operation, if "urlPreSuffix" is the session (stream)
+  //   name and "urlSuffix" is the subsession (track) name, or
+  // - an aggregated operation, if "urlSuffix" is the session (stream) name,
+  //   or "urlPreSuffix" is the session (stream) name, and "urlSuffix" is empty,
+  //   or "urlPreSuffix" and "urlSuffix" are both nonempty, but when concatenated, (with "/") form the session (stream) name.
+  // Begin by figuring out which of these it is:
+  ServerMediaSubsession* subsession;
+  
+  if (fOurServerMediaSession == NULL) { // There wasn't a previous SETUP!
+    ourClientConnection->handleCmd_notSupported();
+    return;
+  } else if (urlSuffix[0] != '\0' && strcmp(fOurServerMediaSession->streamName(), urlPreSuffix) == 0) {
+    // Non-aggregated operation.
+    // Look up the media subsession whose track id is "urlSuffix":
+    ServerMediaSubsessionIterator iter(*fOurServerMediaSession);
+    while ((subsession = iter.next()) != NULL) {
+      if (strcmp(subsession->trackId(), urlSuffix) == 0) break; // success
+    }
+    if (subsession == NULL) { // no such track!
+      ourClientConnection->handleCmd_notFound();
+      return;
+    }
+  } else if (strcmp(fOurServerMediaSession->streamName(), urlSuffix) == 0 ||
+	     (urlSuffix[0] == '\0' && strcmp(fOurServerMediaSession->streamName(), urlPreSuffix) == 0)) {
+    // Aggregated operation
+    subsession = NULL;
+  } else if (urlPreSuffix[0] != '\0' && urlSuffix[0] != '\0') {
+    // Aggregated operation, if <urlPreSuffix>/<urlSuffix> is the session (stream) name:
+    unsigned const urlPreSuffixLen = strlen(urlPreSuffix);
+    if (strncmp(fOurServerMediaSession->streamName(), urlPreSuffix, urlPreSuffixLen) == 0 &&
+	fOurServerMediaSession->streamName()[urlPreSuffixLen] == '/' &&
+	strcmp(&(fOurServerMediaSession->streamName())[urlPreSuffixLen+1], urlSuffix) == 0) {
+      subsession = NULL;
+    } else {
+      ourClientConnection->handleCmd_notFound();
+      return;
+    }
+  } else { // the request doesn't match a known stream and/or track at all!
+    ourClientConnection->handleCmd_notFound();
+    return;
+  }
+  
+  if (strcmp(cmdName, "TEARDOWN") == 0) {
+    handleCmd_TEARDOWN(ourClientConnection, subsession);
+  } else if (strcmp(cmdName, "PLAY") == 0) {
+    handleCmd_PLAY(ourClientConnection, subsession, fullRequestStr);
+  } else if (strcmp(cmdName, "PAUSE") == 0) {
+    handleCmd_PAUSE(ourClientConnection, subsession);
+  } else if (strcmp(cmdName, "GET_PARAMETER") == 0) {
+    handleCmd_GET_PARAMETER(ourClientConnection, subsession, fullRequestStr);
+  } else if (strcmp(cmdName, "SET_PARAMETER") == 0) {
+    handleCmd_SET_PARAMETER(ourClientConnection, subsession, fullRequestStr);
+  }
+}
+
+void RTSPServer::RTSPClientSession
+::handleCmd_TEARDOWN(RTSPServer::RTSPClientConnection* ourClientConnection,
+		     ServerMediaSubsession* subsession) {
+  unsigned i;
+  for (i = 0; i < fNumStreamStates; ++i) {
+    if (subsession == NULL /* means: aggregated operation */
+	|| subsession == fStreamStates[i].subsession) {
+      if (fStreamStates[i].subsession != NULL) {
+	fOurRTSPServer.unnoteTCPStreamingOnSocket(fStreamStates[i].tcpSocketNum, this, i);
+	fStreamStates[i].subsession->deleteStream(fOurSessionId, fStreamStates[i].streamToken);
+	fStreamStates[i].subsession = NULL;
+      }
+    }
+  }
+  
+  setRTSPResponse(ourClientConnection, "200 OK");
+  
+  // Optimization: If all subsessions have now been torn down, then we know that we can reclaim our object now.
+  // (Without this optimization, however, this object would still get reclaimed later, as a result of a 'liveness' timeout.)
+  Boolean noSubsessionsRemain = True;
+  for (i = 0; i < fNumStreamStates; ++i) {
+    if (fStreamStates[i].subsession != NULL) {
+      noSubsessionsRemain = False;
+      break;
+    }
+  }
+  if (noSubsessionsRemain) delete this;
+}
+
+void RTSPServer::RTSPClientSession
+::handleCmd_PLAY(RTSPServer::RTSPClientConnection* ourClientConnection,
+		 ServerMediaSubsession* subsession, char const* fullRequestStr) {
+  char* rtspURL
+    = fOurRTSPServer.rtspURL(fOurServerMediaSession, ourClientConnection->fClientInputSocket);
+  unsigned rtspURLSize = strlen(rtspURL);
+  
+  // Parse the client's "Scale:" header, if any:
+  float scale;
+  Boolean sawScaleHeader = parseScaleHeader(fullRequestStr, scale);
+  
+  // Try to set the stream's scale factor to this value:
+  if (subsession == NULL /*aggregate op*/) {
+    fOurServerMediaSession->testScaleFactor(scale);
+  } else {
+    subsession->testScaleFactor(scale);
+  }
+  
+  char buf[100];
+  char* scaleHeader;
+  if (!sawScaleHeader) {
+    buf[0] = '\0'; // Because we didn't see a Scale: header, don't send one back
+  } else {
+    sprintf(buf, "Scale: %f\r\n", scale);
+  }
+  scaleHeader = strDup(buf);
+  
+  // Parse the client's "Range:" header, if any:
+  float duration = 0.0;
+  double rangeStart = 0.0, rangeEnd = 0.0;
+  char* absStart = NULL; char* absEnd = NULL;
+  Boolean startTimeIsNow;
+  Boolean sawRangeHeader
+    = parseRangeHeader(fullRequestStr, rangeStart, rangeEnd, absStart, absEnd, startTimeIsNow);
+  
+  if (sawRangeHeader && absStart == NULL/*not seeking by 'absolute' time*/) {
+    // Use this information, plus the stream's duration (if known), to create our own "Range:" header, for the response:
+    duration = subsession == NULL /*aggregate op*/
+      ? fOurServerMediaSession->duration() : subsession->duration();
+    if (duration < 0.0) {
+      // We're an aggregate PLAY, but the subsessions have different durations.
+      // Use the largest of these durations in our header
+      duration = -duration;
+    }
+    
+    // Make sure that "rangeStart" and "rangeEnd" (from the client's "Range:" header)
+    // have sane values, before we send back our own "Range:" header in our response:
+    if (rangeStart < 0.0) rangeStart = 0.0;
+    else if (rangeStart > duration) rangeStart = duration;
+    if (rangeEnd < 0.0) rangeEnd = 0.0;
+    else if (rangeEnd > duration) rangeEnd = duration;
+    if ((scale > 0.0 && rangeStart > rangeEnd && rangeEnd > 0.0) ||
+	(scale < 0.0 && rangeStart < rangeEnd)) {
+      // "rangeStart" and "rangeEnd" were the wrong way around; swap them:
+      double tmp = rangeStart;
+      rangeStart = rangeEnd;
+      rangeEnd = tmp;
+    }
+  }
+  
+  // Create a "RTP-Info:" line.  It will get filled in from each subsession's state:
+  char const* rtpInfoFmt =
+    "%s" // "RTP-Info:", plus any preceding rtpInfo items
+    "%s" // comma separator, if needed
+    "url=%s/%s"
+    ";seq=%d"
+    ";rtptime=%u"
+    ;
+  unsigned rtpInfoFmtSize = strlen(rtpInfoFmt);
+  char* rtpInfo = strDup("RTP-Info: ");
+  unsigned i, numRTPInfoItems = 0;
+  
+  // Do any required seeking/scaling on each subsession, before starting streaming.
+  // (However, we don't do this if the "PLAY" request was for just a single subsession
+  // of a multiple-subsession stream; for such streams, seeking/scaling can be done
+  // only with an aggregate "PLAY".)
+  for (i = 0; i < fNumStreamStates; ++i) {
+    if (subsession == NULL /* means: aggregated operation */ || fNumStreamStates == 1) {
+      if (fStreamStates[i].subsession != NULL) {
+	if (sawScaleHeader) {
+	  fStreamStates[i].subsession->setStreamScale(fOurSessionId, fStreamStates[i].streamToken, scale);
+	}
+	if (absStart != NULL) {
+	  // Special case handling for seeking by 'absolute' time:
+	
+	  fStreamStates[i].subsession->seekStream(fOurSessionId, fStreamStates[i].streamToken, absStart, absEnd);
+	} else {
+	  // Seeking by relative (NPT) time:
+	  
+	  u_int64_t numBytes;
+	  if (!sawRangeHeader || startTimeIsNow) {
+	    // We're resuming streaming without seeking, so we just do a 'null' seek
+	    // (to get our NPT, and to specify when to end streaming):
+	    fStreamStates[i].subsession->nullSeekStream(fOurSessionId, fStreamStates[i].streamToken,
+							rangeEnd, numBytes);
+	  } else {
+	    // We do a real 'seek':
+	    double streamDuration = 0.0; // by default; means: stream until the end of the media
+	    if (rangeEnd > 0.0 && (rangeEnd+0.001) < duration) {
+	      // the 0.001 is because we limited the values to 3 decimal places
+	      // We want the stream to end early.  Set the duration we want:
+	      streamDuration = rangeEnd - rangeStart;
+	      if (streamDuration < 0.0) streamDuration = -streamDuration;
+	          // should happen only if scale < 0.0
+	    }
+	    fStreamStates[i].subsession->seekStream(fOurSessionId, fStreamStates[i].streamToken,
+						    rangeStart, streamDuration, numBytes);
+	  }
+	}
+      }
+    }
+  }
+  
+  // Create the "Range:" header that we'll send back in our response.
+  // (Note that we do this after seeking, in case the seeking operation changed the range start time.)
+  if (absStart != NULL) {
+    // We're seeking by 'absolute' time:
+    if (absEnd == NULL) {
+      sprintf(buf, "Range: clock=%s-\r\n", absStart);
+    } else {
+      sprintf(buf, "Range: clock=%s-%s\r\n", absStart, absEnd);
+    }
+    delete[] absStart; delete[] absEnd;
+  } else {
+    // We're seeking by relative (NPT) time:
+    if (!sawRangeHeader || startTimeIsNow) {
+      // We didn't seek, so in our response, begin the range with the current NPT (normal play time):
+      float curNPT = 0.0;
+      for (i = 0; i < fNumStreamStates; ++i) {
+	if (subsession == NULL /* means: aggregated operation */
+	    || subsession == fStreamStates[i].subsession) {
+	  if (fStreamStates[i].subsession == NULL) continue;
+	  float npt = fStreamStates[i].subsession->getCurrentNPT(fStreamStates[i].streamToken);
+	  if (npt > curNPT) curNPT = npt;
+	  // Note: If this is an aggregate "PLAY" on a multi-subsession stream,
+	  // then it's conceivable that the NPTs of each subsession may differ
+	  // (if there has been a previous seek on just one subsession).
+	  // In this (unusual) case, we just return the largest NPT; I hope that turns out OK...
+	}
+      }
+      rangeStart = curNPT;
+    }
+
+    if (rangeEnd == 0.0 && scale >= 0.0) {
+      sprintf(buf, "Range: npt=%.3f-\r\n", rangeStart);
+    } else {
+      sprintf(buf, "Range: npt=%.3f-%.3f\r\n", rangeStart, rangeEnd);
+    }
+  }
+  char* rangeHeader = strDup(buf);
+  
+  // Now, start streaming:
+  for (i = 0; i < fNumStreamStates; ++i) {
+    if (subsession == NULL /* means: aggregated operation */
+	|| subsession == fStreamStates[i].subsession) {
+      unsigned short rtpSeqNum = 0;
+      unsigned rtpTimestamp = 0;
+      if (fStreamStates[i].subsession == NULL) continue;
+      fStreamStates[i].subsession->startStream(fOurSessionId,
+					       fStreamStates[i].streamToken,
+					       (TaskFunc*)noteClientLiveness, this,
+					       rtpSeqNum, rtpTimestamp,
+					       RTSPServer::RTSPClientConnection::handleAlternativeRequestByte, ourClientConnection);
+      const char *urlSuffix = fStreamStates[i].subsession->trackId();
+      char* prevRTPInfo = rtpInfo;
+      unsigned rtpInfoSize = rtpInfoFmtSize
+	+ strlen(prevRTPInfo)
+	+ 1
+	+ rtspURLSize + strlen(urlSuffix)
+	+ 5 /*max unsigned short len*/
+	+ 10 /*max unsigned (32-bit) len*/
+	+ 2 /*allows for trailing \r\n at final end of string*/;
+      rtpInfo = new char[rtpInfoSize];
+      sprintf(rtpInfo, rtpInfoFmt,
+	      prevRTPInfo,
+	      numRTPInfoItems++ == 0 ? "" : ",",
+	      rtspURL, urlSuffix,
+	      rtpSeqNum,
+	      rtpTimestamp
+	      );
+      delete[] prevRTPInfo;
+    }
+  }
+  if (numRTPInfoItems == 0) {
+    rtpInfo[0] = '\0';
+  } else {
+    unsigned rtpInfoLen = strlen(rtpInfo);
+    rtpInfo[rtpInfoLen] = '\r';
+    rtpInfo[rtpInfoLen+1] = '\n';
+    rtpInfo[rtpInfoLen+2] = '\0';
+  }
+  
+  // Fill in the response:
+  snprintf((char*)ourClientConnection->fResponseBuffer, sizeof ourClientConnection->fResponseBuffer,
+	   "RTSP/1.0 200 OK\r\n"
+	   "CSeq: %s\r\n"
+	   "%s"
+	   "%s"
+	   "%s"
+	   "Session: %08X\r\n"
+	   "%s\r\n",
+	   ourClientConnection->fCurrentCSeq,
+	   dateHeader(),
+	   scaleHeader,
+	   rangeHeader,
+	   fOurSessionId,
+	   rtpInfo);
+  delete[] rtpInfo; delete[] rangeHeader;
+  delete[] scaleHeader; delete[] rtspURL;
+}
+
+void RTSPServer::RTSPClientSession
+::handleCmd_PAUSE(RTSPServer::RTSPClientConnection* ourClientConnection,
+		  ServerMediaSubsession* subsession) {
+  for (unsigned i = 0; i < fNumStreamStates; ++i) {
+    if (subsession == NULL /* means: aggregated operation */
+	|| subsession == fStreamStates[i].subsession) {
+      if (fStreamStates[i].subsession != NULL) {
+	fStreamStates[i].subsession->pauseStream(fOurSessionId, fStreamStates[i].streamToken);
+      }
+    }
+  }
+  
+  setRTSPResponse(ourClientConnection, "200 OK", fOurSessionId);
+}
+
+void RTSPServer::RTSPClientSession
+::handleCmd_GET_PARAMETER(RTSPServer::RTSPClientConnection* ourClientConnection,
+			  ServerMediaSubsession* /*subsession*/, char const* /*fullRequestStr*/) {
+  // By default, we implement "GET_PARAMETER" just as a 'keep alive', and send back a dummy response.
+  // (If you want to handle "GET_PARAMETER" properly, you can do so by defining a subclass of "RTSPServer"
+  // and "RTSPServer::RTSPClientSession", and then reimplement this virtual function in your subclass.)
+  setRTSPResponse(ourClientConnection, "200 OK", fOurSessionId, LIVEMEDIA_LIBRARY_VERSION_STRING);
+}
+
+void RTSPServer::RTSPClientSession
+::handleCmd_SET_PARAMETER(RTSPServer::RTSPClientConnection* ourClientConnection,
+			  ServerMediaSubsession* /*subsession*/, char const* /*fullRequestStr*/) {
+  // By default, we implement "SET_PARAMETER" just as a 'keep alive', and send back an empty response.
+  // (If you want to handle "SET_PARAMETER" properly, you can do so by defining a subclass of "RTSPServer"
+  // and "RTSPServer::RTSPClientSession", and then reimplement this virtual function in your subclass.)
+  setRTSPResponse(ourClientConnection, "200 OK", fOurSessionId);
+}
+
+GenericMediaServer::ClientConnection*
+RTSPServer::createNewClientConnection(int clientSocket, struct sockaddr_in clientAddr) {
+  return new RTSPClientConnection(*this, clientSocket, clientAddr);
+}
+
+GenericMediaServer::ClientSession*
+RTSPServer::createNewClientSession(u_int32_t sessionId) {
+  return new RTSPClientSession(*this, sessionId);
+}
diff --git a/liveMedia/RTSPServerRegister.cpp b/liveMedia/RTSPServerRegister.cpp
new file mode 100644
index 0000000..77fd852
--- /dev/null
+++ b/liveMedia/RTSPServerRegister.cpp
@@ -0,0 +1,431 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A RTSP server
+// Implementation of functionality related to the "REGISTER" and "DEREGISTER" commands
+
+#include "RTSPServer.hh"
+#include "RTSPCommon.hh"
+#include "RTSPRegisterSender.hh"
+#include "ProxyServerMediaSession.hh"
+#include "GroupsockHelper.hh"
+
+////////// Implementation of "RTSPServer::registerStream()": //////////
+
+static void rtspRegisterResponseHandler(RTSPClient* rtspClient, int resultCode, char* resultString); // forward
+
+// A class that represents the state of a "REGISTER" request in progress:
+class RegisterRequestRecord: public RTSPRegisterSender {
+public:
+  RegisterRequestRecord(RTSPServer& ourServer, unsigned requestId,
+			char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum, char const* rtspURLToRegister,
+			RTSPServer::responseHandlerForREGISTER* responseHandler, Authenticator* authenticator,
+			Boolean requestStreamingViaTCP, char const* proxyURLSuffix)
+    : RTSPRegisterSender(ourServer.envir(), remoteClientNameOrAddress, remoteClientPortNum, rtspURLToRegister,
+			 rtspRegisterResponseHandler, authenticator,
+			 requestStreamingViaTCP, proxyURLSuffix, True/*reuseConnection*/,
+#ifdef DEBUG
+			 1/*verbosityLevel*/,
+#else
+			 0/*verbosityLevel*/,
+#endif
+			 NULL),
+      fOurServer(ourServer), fRequestId(requestId), fResponseHandler(responseHandler) {
+    // Add ourself to our server's 'pending REGISTER or DEREGISTER requests' table:
+    ourServer.fPendingRegisterOrDeregisterRequests->Add((char const*)this, this);
+  }
+
+  virtual ~RegisterRequestRecord() {
+    // Remove ourself from the server's 'pending REGISTER or DEREGISTER requests' hash table before we go:
+    fOurServer.fPendingRegisterOrDeregisterRequests->Remove((char const*)this);
+  }
+
+  void handleResponse(int resultCode, char* resultString) {
+    if (resultCode == 0) {
+      // The "REGISTER" request succeeded, so use the still-open RTSP socket to await incoming commands from the remote endpoint:
+      int sock;
+      struct sockaddr_in remoteAddress;
+
+      grabConnection(sock, remoteAddress);
+      if (sock >= 0) {
+	increaseSendBufferTo(envir(), sock, 50*1024); // in anticipation of streaming over it
+	(void)fOurServer.createNewClientConnection(sock, remoteAddress);
+      }
+    }
+
+    if (fResponseHandler != NULL) {
+      // Call our (REGISTER-specific) response handler now:
+      (*fResponseHandler)(&fOurServer, fRequestId, resultCode, resultString);
+    } else {
+      // We need to delete[] "resultString" before we leave:
+      delete[] resultString;
+    }
+
+    // We're completely done with the REGISTER command now, so delete ourself now:
+    Medium::close(this);
+  }
+
+private:
+  RTSPServer& fOurServer;
+  unsigned fRequestId;
+  RTSPServer::responseHandlerForREGISTER* fResponseHandler;
+};
+
+static void rtspRegisterResponseHandler(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  RegisterRequestRecord* registerRequestRecord = (RegisterRequestRecord*)rtspClient;
+
+  registerRequestRecord->handleResponse(resultCode, resultString);
+}
+
+unsigned RTSPServer::registerStream(ServerMediaSession* serverMediaSession,
+				    char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum,
+				    responseHandlerForREGISTER* responseHandler,
+				    char const* username, char const* password,
+				    Boolean receiveOurStreamViaTCP, char const* proxyURLSuffix) {
+  // Create a new "RegisterRequestRecord" that will send the "REGISTER" command.
+  // (This object will automatically get deleted after we get a response to the "REGISTER" command, or if we're deleted.)
+  Authenticator* authenticator = NULL;
+  if (username != NULL) {
+    if (password == NULL) password = "";
+    authenticator = new Authenticator(username, password);
+  }
+  unsigned requestId = ++fRegisterOrDeregisterRequestCounter;
+  char const* url = rtspURL(serverMediaSession);
+  new RegisterRequestRecord(*this, requestId,
+			    remoteClientNameOrAddress, remoteClientPortNum, url,
+			    responseHandler, authenticator,
+			    receiveOurStreamViaTCP, proxyURLSuffix);
+  
+  delete[] (char*)url; // we can do this here because it was copied to the "RegisterRequestRecord" 
+  delete authenticator; // ditto
+  return requestId;
+}
+
+////////// Implementation of "RTSPServer::deregisterStream()": //////////
+
+static void rtspDeregisterResponseHandler(RTSPClient* rtspClient, int resultCode, char* resultString); // forward
+
+// A class that represents the state of a "DEREGISTER" request in progress:
+class DeregisterRequestRecord: public RTSPDeregisterSender {
+public:
+  DeregisterRequestRecord(RTSPServer& ourServer, unsigned requestId,
+			  char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum, char const* rtspURLToDeregister,
+			  RTSPServer::responseHandlerForDEREGISTER* responseHandler, Authenticator* authenticator,
+			  char const* proxyURLSuffix)
+    : RTSPDeregisterSender(ourServer.envir(), remoteClientNameOrAddress, remoteClientPortNum, rtspURLToDeregister,
+			 rtspDeregisterResponseHandler, authenticator, proxyURLSuffix,
+#ifdef DEBUG
+			 1/*verbosityLevel*/,
+#else
+			 0/*verbosityLevel*/,
+#endif
+			 NULL),
+      fOurServer(ourServer), fRequestId(requestId), fResponseHandler(responseHandler) {
+    // Add ourself to our server's 'pending REGISTER or DEREGISTER requests' table:
+    ourServer.fPendingRegisterOrDeregisterRequests->Add((char const*)this, this);
+  }
+
+  virtual ~DeregisterRequestRecord() {
+    // Remove ourself from the server's 'pending REGISTER or DEREGISTER requests' hash table before we go:
+    fOurServer.fPendingRegisterOrDeregisterRequests->Remove((char const*)this);
+  }
+
+  void handleResponse(int resultCode, char* resultString) {
+    if (fResponseHandler != NULL) {
+      // Call our (DEREGISTER-specific) response handler now:
+      (*fResponseHandler)(&fOurServer, fRequestId, resultCode, resultString);
+    } else {
+      // We need to delete[] "resultString" before we leave:
+      delete[] resultString;
+    }
+
+    // We're completely done with the DEREGISTER command now, so delete ourself now:
+    Medium::close(this);
+  }
+
+private:
+  RTSPServer& fOurServer;
+  unsigned fRequestId;
+  RTSPServer::responseHandlerForDEREGISTER* fResponseHandler;
+};
+
+static void rtspDeregisterResponseHandler(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  DeregisterRequestRecord* deregisterRequestRecord = (DeregisterRequestRecord*)rtspClient;
+
+  deregisterRequestRecord->handleResponse(resultCode, resultString);
+}
+
+unsigned RTSPServer::deregisterStream(ServerMediaSession* serverMediaSession,
+				      char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum,
+				      responseHandlerForDEREGISTER* responseHandler,
+				      char const* username, char const* password,
+				      char const* proxyURLSuffix) {
+  // Create a new "DeregisterRequestRecord" that will send the "DEREGISTER" command.
+  // (This object will automatically get deleted after we get a response to the "DEREGISTER" command, or if we're deleted.)
+  Authenticator* authenticator = NULL;
+  if (username != NULL) {
+    if (password == NULL) password = "";
+    authenticator = new Authenticator(username, password);
+  }
+  unsigned requestId = ++fRegisterOrDeregisterRequestCounter;
+  char const* url = rtspURL(serverMediaSession);
+  new DeregisterRequestRecord(*this, requestId,
+			      remoteClientNameOrAddress, remoteClientPortNum, url,
+			      responseHandler, authenticator,
+			      proxyURLSuffix);
+  
+  delete[] (char*)url; // we can do this here because it was copied to the "DeregisterRequestRecord"
+  delete authenticator; // ditto
+  return requestId;
+}
+
+Boolean RTSPServer::weImplementREGISTER(char const* /*cmd*//*"REGISTER" or "DEREGISTER"*/,
+					char const* /*proxyURLSuffix*/, char*& responseStr) {
+  // By default, servers do not implement our custom "REGISTER"/"DEREGISTER" commands:
+  responseStr = NULL;
+  return False;
+}
+
+void RTSPServer::implementCmd_REGISTER(char const* /*cmd*//*"REGISTER" or "DEREGISTER"*/,
+				       char const* /*url*/, char const* /*urlSuffix*/, int /*socketToRemoteServer*/,
+				       Boolean /*deliverViaTCP*/, char const* /*proxyURLSuffix*/) {
+  // By default, this function is a 'noop'
+}
+
+// Special mechanism for handling our custom "REGISTER" command:
+
+RTSPServer::RTSPClientConnection::ParamsForREGISTER
+::ParamsForREGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+		    RTSPServer::RTSPClientConnection* ourConnection, char const* url, char const* urlSuffix,
+		    Boolean reuseConnection, Boolean deliverViaTCP, char const* proxyURLSuffix)
+  : fCmd(strDup(cmd)), fOurConnection(ourConnection), fURL(strDup(url)), fURLSuffix(strDup(urlSuffix)),
+    fReuseConnection(reuseConnection), fDeliverViaTCP(deliverViaTCP), fProxyURLSuffix(strDup(proxyURLSuffix)) {
+}
+
+RTSPServer::RTSPClientConnection::ParamsForREGISTER::~ParamsForREGISTER() {
+  delete[] (char*)fCmd; delete[] fURL; delete[] fURLSuffix; delete[] fProxyURLSuffix;
+}
+
+#define DELAY_USECS_AFTER_REGISTER_RESPONSE 100000 /*100ms*/
+
+void RTSPServer
+::RTSPClientConnection::handleCmd_REGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+					   char const* url, char const* urlSuffix, char const* fullRequestStr,
+					   Boolean reuseConnection, Boolean deliverViaTCP, char const* proxyURLSuffix) {
+  char* responseStr;
+  if (fOurRTSPServer.weImplementREGISTER(cmd, proxyURLSuffix, responseStr)) {
+    // The "REGISTER"/"DEREGISTER" command - if we implement it - may require access control:
+    if (!authenticationOK(cmd, urlSuffix, fullRequestStr)) return;
+    
+    // We implement the "REGISTER"/"DEREGISTER" command by first replying to it, then actually
+    // handling it (in a separate event-loop task, that will get called after the reply has
+    // been done).
+    // Hack: If we're going to reuse the command's connection for subsequent RTSP commands, then we
+    // delay the actual handling of the command slightly, to make it less likely that the first
+    // subsequent RTSP command (e.g., "DESCRIBE") will end up in the client's reponse buffer before
+    // the socket (at the far end) gets reused for RTSP command handling.
+    setRTSPResponse(responseStr == NULL ? "200 OK" : responseStr);
+    delete[] responseStr;
+    
+    ParamsForREGISTER* registerParams = new ParamsForREGISTER(cmd, this, url, urlSuffix, reuseConnection, deliverViaTCP, proxyURLSuffix);
+    envir().taskScheduler().scheduleDelayedTask(reuseConnection ? DELAY_USECS_AFTER_REGISTER_RESPONSE : 0,
+						(TaskFunc*)continueHandlingREGISTER, registerParams);
+  } else if (responseStr != NULL) {
+    setRTSPResponse(responseStr);
+    delete[] responseStr;
+  } else {
+    handleCmd_notSupported();
+  }
+}
+
+// A special version of "parseTransportHeader()", used just for parsing the "Transport:" header in an incoming "REGISTER" command:
+void parseTransportHeaderForREGISTER(char const* buf,
+				     Boolean &reuseConnection,
+				     Boolean& deliverViaTCP,
+				     char*& proxyURLSuffix) {
+  // Initialize the result parameters to default values:
+  reuseConnection = False;
+  deliverViaTCP = False;
+  proxyURLSuffix = NULL;
+  
+  // First, find "Transport:"
+  while (1) {
+    if (*buf == '\0') return; // not found
+    if (*buf == '\r' && *(buf+1) == '\n' && *(buf+2) == '\r') return; // end of the headers => not found
+    if (_strncasecmp(buf, "Transport:", 10) == 0) break;
+    ++buf;
+  }
+  
+  // Then, run through each of the fields, looking for ones we handle:
+  char const* fields = buf + 10;
+  while (*fields == ' ') ++fields;
+  char* field = strDupSize(fields);
+  while (sscanf(fields, "%[^;\r\n]", field) == 1) {
+    if (strcmp(field, "reuse_connection") == 0) {
+      reuseConnection = True;
+    } else if (_strncasecmp(field, "preferred_delivery_protocol=udp", 31) == 0) {
+      deliverViaTCP = False;
+    } else if (_strncasecmp(field, "preferred_delivery_protocol=interleaved", 39) == 0) {
+      deliverViaTCP = True;
+    } else if (_strncasecmp(field, "proxy_url_suffix=", 17) == 0) {
+      delete[] proxyURLSuffix;
+      proxyURLSuffix = strDup(field+17);
+    }
+    
+    fields += strlen(field);
+    while (*fields == ';' || *fields == ' ' || *fields == '\t') ++fields; // skip over separating ';' chars or whitespace
+    if (*fields == '\0' || *fields == '\r' || *fields == '\n') break;
+  }
+  delete[] field;
+}
+
+void RTSPServer::RTSPClientConnection::continueHandlingREGISTER(ParamsForREGISTER* params) {
+  params->fOurConnection->continueHandlingREGISTER1(params);
+}
+
+void RTSPServer::RTSPClientConnection::continueHandlingREGISTER1(ParamsForREGISTER* params) {
+  // Reuse our socket if requested:
+  int socketNumToBackEndServer = params->fReuseConnection ? fClientOutputSocket : -1;
+
+  RTSPServer* ourServer = &fOurRTSPServer; // copy the pointer now, in case we "delete this" below
+  
+  if (socketNumToBackEndServer >= 0) {
+    // Because our socket will no longer be used by the server to handle incoming requests, we can now delete this
+    // "RTSPClientConnection" object.  We do this now, in case the "implementCmd_REGISTER()" call below would also end up
+    // deleting this.
+    fClientInputSocket = fClientOutputSocket = -1; // so the socket doesn't get closed when we get deleted
+    delete this;
+  }
+  
+  ourServer->implementCmd_REGISTER(params->fCmd,
+				   params->fURL, params->fURLSuffix, socketNumToBackEndServer,
+				   params->fDeliverViaTCP, params->fProxyURLSuffix);
+  delete params;
+}
+
+
+///////// RTSPServerWithREGISTERProxying implementation /////////
+
+RTSPServerWithREGISTERProxying* RTSPServerWithREGISTERProxying
+::createNew(UsageEnvironment& env, Port ourPort,
+	    UserAuthenticationDatabase* authDatabase, UserAuthenticationDatabase* authDatabaseForREGISTER,
+	    unsigned reclamationSeconds,
+	    Boolean streamRTPOverTCP, int verbosityLevelForProxying,
+	    char const* backEndUsername, char const* backEndPassword) {
+  int ourSocket = setUpOurSocket(env, ourPort);
+  if (ourSocket == -1) return NULL;
+  
+  return new RTSPServerWithREGISTERProxying(env, ourSocket, ourPort,
+					    authDatabase, authDatabaseForREGISTER,
+					    reclamationSeconds,
+					    streamRTPOverTCP, verbosityLevelForProxying,
+					    backEndUsername, backEndPassword);
+}
+
+RTSPServerWithREGISTERProxying
+::RTSPServerWithREGISTERProxying(UsageEnvironment& env, int ourSocket, Port ourPort,
+				 UserAuthenticationDatabase* authDatabase, UserAuthenticationDatabase* authDatabaseForREGISTER,
+				 unsigned reclamationSeconds,
+				 Boolean streamRTPOverTCP, int verbosityLevelForProxying,
+				 char const* backEndUsername, char const* backEndPassword)
+  : RTSPServer(env, ourSocket, ourPort, authDatabase, reclamationSeconds),
+    fStreamRTPOverTCP(streamRTPOverTCP), fVerbosityLevelForProxying(verbosityLevelForProxying),
+    fRegisteredProxyCounter(0), fAllowedCommandNames(NULL), fAuthDBForREGISTER(authDatabaseForREGISTER),
+    fBackEndUsername(strDup(backEndUsername)), fBackEndPassword(strDup(backEndPassword)) {
+}
+
+RTSPServerWithREGISTERProxying::~RTSPServerWithREGISTERProxying() {
+  delete[] fAllowedCommandNames;
+  delete[] fBackEndUsername; delete[] fBackEndPassword;
+}
+
+char const* RTSPServerWithREGISTERProxying::allowedCommandNames() {
+  if (fAllowedCommandNames == NULL) {
+    char const* baseAllowedCommandNames = RTSPServer::allowedCommandNames();
+    char const* newAllowedCommandName = ", REGISTER, DEREGISTER";
+    fAllowedCommandNames = new char[strlen(baseAllowedCommandNames) + strlen(newAllowedCommandName) + 1/* for '\0' */];
+    sprintf(fAllowedCommandNames, "%s%s", baseAllowedCommandNames, newAllowedCommandName);
+  }
+  return fAllowedCommandNames;
+}
+
+Boolean RTSPServerWithREGISTERProxying
+::weImplementREGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+		      char const* proxyURLSuffix, char*& responseStr) {
+  // First, check whether we have already proxied a stream as "proxyURLSuffix":
+  if (proxyURLSuffix != NULL) {
+    ServerMediaSession* sms = lookupServerMediaSession(proxyURLSuffix);
+    if ((strcmp(cmd, "REGISTER") == 0 && sms != NULL) ||
+	(strcmp(cmd, "DEREGISTER") == 0 && sms == NULL)) {
+      responseStr = strDup("451 Invalid parameter");
+      return False;
+    }
+  }
+
+  // Otherwise, we will implement it:
+  responseStr = NULL;
+  return True;
+}
+
+void RTSPServerWithREGISTERProxying
+::implementCmd_REGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+			char const* url, char const* /*urlSuffix*/, int socketToRemoteServer,
+			Boolean deliverViaTCP, char const* proxyURLSuffix) {
+  // Continue setting up proxying for the specified URL.
+  // By default:
+  //    - We use "registeredProxyStream-N" as the (front-end) stream name (ignoring the back-end stream's 'urlSuffix'),
+  //      unless "proxyURLSuffix" is non-NULL (in which case we use that)
+  //    - There is no 'username' and 'password' for the back-end stream.  (Thus, access-controlled back-end streams will fail.)
+  //    - If "fStreamRTPOverTCP" is True, then we request delivery over TCP, regardless of the value of "deliverViaTCP".
+  //      (Otherwise, if "fStreamRTPOverTCP" is False, we use the value of "deliverViaTCP" to decide this.)
+  // To change this default behavior, you will need to subclass "RTSPServerWithREGISTERProxying", and reimplement this function.
+  
+  char const* proxyStreamName;
+  char proxyStreamNameBuf[100];
+  if (proxyURLSuffix == NULL) {
+    sprintf(proxyStreamNameBuf, "registeredProxyStream-%u", ++fRegisteredProxyCounter);
+    proxyStreamName = proxyStreamNameBuf;
+  } else {
+    proxyStreamName = proxyURLSuffix;
+  }
+
+  if (strcmp(cmd, "REGISTER") == 0) {
+    if (fStreamRTPOverTCP) deliverViaTCP = True;
+    portNumBits tunnelOverHTTPPortNum = deliverViaTCP ? (portNumBits)(~0) : 0;
+        // We don't support streaming from the back-end via RTSP/RTP/RTCP-over-HTTP; only via RTP/RTCP-over-TCP or RTP/RTCP-over-UDP
+
+    ServerMediaSession* sms
+      = ProxyServerMediaSession::createNew(envir(), this, url, proxyStreamName,
+					   fBackEndUsername, fBackEndPassword,
+					   tunnelOverHTTPPortNum, fVerbosityLevelForProxying, socketToRemoteServer);
+    addServerMediaSession(sms);
+  
+    // (Regardless of the verbosity level) announce the fact that we're proxying this new stream, and the URL to use to access it:
+    char* proxyStreamURL = rtspURL(sms);
+    envir() << "Proxying the registered back-end stream \"" << url << "\".\n";
+    envir() << "\tPlay this stream using the URL: " << proxyStreamURL << "\n";
+    delete[] proxyStreamURL;
+  } else { // "DEREGISTER"
+    deleteServerMediaSession(lookupServerMediaSession(proxyStreamName));
+  }
+}
+
+UserAuthenticationDatabase* RTSPServerWithREGISTERProxying::getAuthenticationDatabaseForCommand(char const* cmdName) {
+  if (strcmp(cmdName, "REGISTER") == 0) return fAuthDBForREGISTER;
+
+  return RTSPServer::getAuthenticationDatabaseForCommand(cmdName);
+}
diff --git a/liveMedia/RTSPServerSupportingHTTPStreaming.cpp b/liveMedia/RTSPServerSupportingHTTPStreaming.cpp
new file mode 100644
index 0000000..691e7c8
--- /dev/null
+++ b/liveMedia/RTSPServerSupportingHTTPStreaming.cpp
@@ -0,0 +1,268 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A server that supports both RTSP, and HTTP streaming (using Apple's "HTTP Live Streaming" protocol)
+// Implementation
+
+#include "RTSPServer.hh"
+#include "RTSPServerSupportingHTTPStreaming.hh"
+#include "RTSPCommon.hh"
+#ifndef _WIN32_WCE
+#include <sys/stat.h>
+#endif
+#include <time.h>
+
+RTSPServerSupportingHTTPStreaming*
+RTSPServerSupportingHTTPStreaming::createNew(UsageEnvironment& env, Port rtspPort,
+					     UserAuthenticationDatabase* authDatabase, unsigned reclamationTestSeconds) {
+  int ourSocket = setUpOurSocket(env, rtspPort);
+  if (ourSocket == -1) return NULL;
+
+  return new RTSPServerSupportingHTTPStreaming(env, ourSocket, rtspPort, authDatabase, reclamationTestSeconds);
+}
+
+RTSPServerSupportingHTTPStreaming
+::RTSPServerSupportingHTTPStreaming(UsageEnvironment& env, int ourSocket, Port rtspPort,
+				    UserAuthenticationDatabase* authDatabase, unsigned reclamationTestSeconds)
+  : RTSPServer(env, ourSocket, rtspPort, authDatabase, reclamationTestSeconds) {
+}
+
+RTSPServerSupportingHTTPStreaming::~RTSPServerSupportingHTTPStreaming() {
+}
+
+GenericMediaServer::ClientConnection*
+RTSPServerSupportingHTTPStreaming::createNewClientConnection(int clientSocket, struct sockaddr_in clientAddr) {
+  return new RTSPClientConnectionSupportingHTTPStreaming(*this, clientSocket, clientAddr);
+}
+
+RTSPServerSupportingHTTPStreaming::RTSPClientConnectionSupportingHTTPStreaming
+::RTSPClientConnectionSupportingHTTPStreaming(RTSPServer& ourServer, int clientSocket, struct sockaddr_in clientAddr)
+  : RTSPClientConnection(ourServer, clientSocket, clientAddr),
+    fClientSessionId(0), fStreamSource(NULL), fPlaylistSource(NULL), fTCPSink(NULL) {
+}
+
+RTSPServerSupportingHTTPStreaming::RTSPClientConnectionSupportingHTTPStreaming::~RTSPClientConnectionSupportingHTTPStreaming() {
+  Medium::close(fPlaylistSource);
+  Medium::close(fStreamSource);
+  Medium::close(fTCPSink);
+}
+
+static char const* lastModifiedHeader(char const* fileName) {
+  static char buf[200];
+  buf[0] = '\0'; // by default, return an empty string
+
+#ifndef _WIN32_WCE
+  struct stat sb;
+  int statResult = stat(fileName, &sb);
+  if (statResult == 0) {
+    strftime(buf, sizeof buf, "Last-Modified: %a, %b %d %Y %H:%M:%S GMT\r\n", gmtime((const time_t*)&sb.st_mtime));
+  }
+#endif
+
+  return buf;
+}
+
+void RTSPServerSupportingHTTPStreaming::RTSPClientConnectionSupportingHTTPStreaming
+::handleHTTPCmd_StreamingGET(char const* urlSuffix, char const* /*fullRequestStr*/) {
+  // If "urlSuffix" ends with "?segment=<offset-in-seconds>,<duration-in-seconds>", then strip this off, and send the
+  // specified segment.  Otherwise, construct and send a playlist that consists of segments from the specified file.
+  do {
+    char const* questionMarkPos = strrchr(urlSuffix, '?');
+    if (questionMarkPos == NULL) break;
+    unsigned offsetInSeconds, durationInSeconds;
+    if (sscanf(questionMarkPos, "?segment=%u,%u", &offsetInSeconds, &durationInSeconds) != 2) break;
+
+    char* streamName = strDup(urlSuffix);
+    streamName[questionMarkPos-urlSuffix] = '\0';
+
+    do {
+      ServerMediaSession* session = fOurServer.lookupServerMediaSession(streamName);
+      if (session == NULL) {
+	handleHTTPCmd_notFound();
+	break;
+      }
+
+      // We can't send multi-subsession streams over HTTP (because there's no defined way to multiplex more than one subsession).
+      // Therefore, use the first (and presumed only) substream:
+      ServerMediaSubsessionIterator iter(*session);
+      ServerMediaSubsession* subsession = iter.next();
+      if (subsession == NULL) {
+	// Treat an 'empty' ServerMediaSession the same as one that doesn't exist at all:
+	handleHTTPCmd_notFound();
+	break;
+      }
+
+      // Call "getStreamParameters()" to create the stream's source.  (Because we're not actually streaming via RTP/RTCP, most
+      // of the parameters to the call are dummy.)
+      ++fClientSessionId;
+      Port clientRTPPort(0), clientRTCPPort(0), serverRTPPort(0), serverRTCPPort(0);
+      netAddressBits destinationAddress = 0;
+      u_int8_t destinationTTL = 0;
+      Boolean isMulticast = False;
+      void* streamToken;
+      subsession->getStreamParameters(fClientSessionId, 0, clientRTPPort,clientRTCPPort, -1,0,0, destinationAddress,destinationTTL, isMulticast, serverRTPPort,serverRTCPPort, streamToken);
+      
+      // Seek the stream source to the desired place, with the desired duration, and (as a side effect) get the number of bytes:
+      double dOffsetInSeconds = (double)offsetInSeconds;
+      u_int64_t numBytes;
+      subsession->seekStream(fClientSessionId, streamToken, dOffsetInSeconds, (double)durationInSeconds, numBytes);
+      unsigned numTSBytesToStream = (unsigned)numBytes;
+      
+      if (numTSBytesToStream == 0) {
+	// For some reason, we do not know the size of the requested range.  We can't handle this request:
+	handleHTTPCmd_notSupported();
+	break;
+      }
+      
+      // Construct our response:
+      snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	       "HTTP/1.1 200 OK\r\n"
+	       "%s"
+	       "Server: LIVE555 Streaming Media v%s\r\n"
+	       "%s"
+	       "Content-Length: %d\r\n"
+	       "Content-Type: text/plain; charset=ISO-8859-1\r\n"
+	       "\r\n",
+	       dateHeader(),
+	       LIVEMEDIA_LIBRARY_VERSION_STRING,
+	       lastModifiedHeader(streamName),
+	       numTSBytesToStream);
+      // Send the response now, because we're about to add more data (from the source):
+      send(fClientOutputSocket, (char const*)fResponseBuffer, strlen((char*)fResponseBuffer), 0);
+      fResponseBuffer[0] = '\0'; // We've already sent the response.  This tells the calling code not to send it again.
+      
+      // Ask the media source to deliver - to the TCP sink - the desired data:
+      if (fStreamSource != NULL) { // sanity check
+	if (fTCPSink != NULL) fTCPSink->stopPlaying();
+	Medium::close(fStreamSource);
+      }
+      fStreamSource = subsession->getStreamSource(streamToken);
+      if (fStreamSource != NULL) {
+	if (fTCPSink == NULL) fTCPSink = TCPStreamSink::createNew(envir(), fClientOutputSocket);
+	fTCPSink->startPlaying(*fStreamSource, afterStreaming, this);
+      }
+    } while(0);
+
+    delete[] streamName;
+    return;
+  } while (0);
+
+  // "urlSuffix" does not end with "?segment=<offset-in-seconds>,<duration-in-seconds>".
+  // Construct and send a playlist that describes segments from the specified file.
+
+  // First, make sure that the named file exists, and is streamable:
+  ServerMediaSession* session = fOurServer.lookupServerMediaSession(urlSuffix);
+  if (session == NULL) {
+    handleHTTPCmd_notFound();
+    return;
+  }
+
+  // To be able to construct a playlist for the requested file, we need to know its duration:
+  float duration = session->duration();
+  if (duration <= 0.0) {
+    // We can't handle this request:
+    handleHTTPCmd_notSupported();
+    return;
+  }
+
+  // Now, construct the playlist.  It will consist of a prefix, one or more media file specifications, and a suffix:
+  unsigned const maxIntLen = 10; // >= the maximum possible strlen() of an integer in the playlist
+  char const* const playlistPrefixFmt =
+    "#EXTM3U\r\n"
+    "#EXT-X-ALLOW-CACHE:YES\r\n"
+    "#EXT-X-MEDIA-SEQUENCE:0\r\n"
+    "#EXT-X-TARGETDURATION:%d\r\n";
+  unsigned const playlistPrefixFmt_maxLen = strlen(playlistPrefixFmt) + maxIntLen;
+
+  char const* const playlistMediaFileSpecFmt =
+    "#EXTINF:%d,\r\n"
+    "%s?segment=%d,%d\r\n";
+  unsigned const playlistMediaFileSpecFmt_maxLen = strlen(playlistMediaFileSpecFmt) + maxIntLen + strlen(urlSuffix) + 2*maxIntLen;
+
+  char const* const playlistSuffixFmt =
+    "#EXT-X-ENDLIST\r\n";
+  unsigned const playlistSuffixFmt_maxLen = strlen(playlistSuffixFmt);
+
+  // Figure out the 'target duration' that will produce a playlist that will fit in our response buffer.  (But make it at least 10s.)
+  unsigned const playlistMaxSize = 10000;
+  unsigned const mediaFileSpecsMaxSize = playlistMaxSize - (playlistPrefixFmt_maxLen + playlistSuffixFmt_maxLen);
+  unsigned const maxNumMediaFileSpecs = mediaFileSpecsMaxSize/playlistMediaFileSpecFmt_maxLen;
+
+  unsigned targetDuration = (unsigned)(duration/maxNumMediaFileSpecs + 1);
+  if (targetDuration < 10) targetDuration = 10;
+
+  char* playlist = new char[playlistMaxSize];
+  char* s = playlist;
+  sprintf(s, playlistPrefixFmt, targetDuration);
+  s += strlen(s);
+
+  unsigned durSoFar = 0;
+  while (1) {
+    unsigned dur = targetDuration < duration ? targetDuration : (unsigned)duration;
+    duration -= dur;
+    sprintf(s, playlistMediaFileSpecFmt, dur, urlSuffix, durSoFar, dur);
+    s += strlen(s);
+    if (duration < 1.0) break;
+
+    durSoFar += dur;
+  }
+
+  sprintf(s, playlistSuffixFmt);
+  s += strlen(s);
+  unsigned playlistLen = s - playlist;
+
+  // Construct our response:
+  snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
+	   "HTTP/1.1 200 OK\r\n"
+	   "%s"
+	   "Server: LIVE555 Streaming Media v%s\r\n"
+	   "%s"
+	   "Content-Length: %d\r\n"
+	   "Content-Type: application/vnd.apple.mpegurl\r\n"
+	   "\r\n",
+	   dateHeader(),
+	   LIVEMEDIA_LIBRARY_VERSION_STRING,
+	   lastModifiedHeader(urlSuffix),
+	   playlistLen);
+
+  // Send the response header now, because we're about to add more data (the playlist):
+  send(fClientOutputSocket, (char const*)fResponseBuffer, strlen((char*)fResponseBuffer), 0);
+  fResponseBuffer[0] = '\0'; // We've already sent the response.  This tells the calling code not to send it again.
+
+  // Then, send the playlist.  Because it's large, we don't do so using "send()", because that might not send it all at once.
+  // Instead, we stream the playlist over the TCP socket:
+  if (fPlaylistSource != NULL) { // sanity check
+    if (fTCPSink != NULL) fTCPSink->stopPlaying();
+    Medium::close(fPlaylistSource);
+  }
+  fPlaylistSource = ByteStreamMemoryBufferSource::createNew(envir(), (u_int8_t*)playlist, playlistLen);
+  if (fTCPSink == NULL) fTCPSink = TCPStreamSink::createNew(envir(), fClientOutputSocket);
+  fTCPSink->startPlaying(*fPlaylistSource, afterStreaming, this);
+}
+
+void RTSPServerSupportingHTTPStreaming::RTSPClientConnectionSupportingHTTPStreaming::afterStreaming(void* clientData) {
+   RTSPServerSupportingHTTPStreaming::RTSPClientConnectionSupportingHTTPStreaming* clientConnection
+    = (RTSPServerSupportingHTTPStreaming::RTSPClientConnectionSupportingHTTPStreaming*)clientData;
+   // Arrange to delete the 'client connection' object:
+   if (clientConnection->fRecursionCount > 0) {
+     // We're still in the midst of handling a request
+     clientConnection->fIsActive = False; // will cause the object to get deleted at the end of handling the request
+   } else {
+     // We're no longer handling a request; delete the object now:
+     delete clientConnection;
+   }
+}
diff --git a/liveMedia/RawVideoRTPSink.cpp b/liveMedia/RawVideoRTPSink.cpp
new file mode 100644
index 0000000..78f813a
--- /dev/null
+++ b/liveMedia/RawVideoRTPSink.cpp
@@ -0,0 +1,321 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for Raw video
+// Implementation
+
+#include "RawVideoRTPSink.hh"
+
+RawVideoRTPSink* RawVideoRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+        unsigned height, unsigned width, unsigned depth,
+        char const* sampling, char const* colorimetry) {
+  return new RawVideoRTPSink(env, RTPgs,
+                             rtpPayloadFormat,
+                             height, width, depth,
+                             sampling, colorimetry);
+}
+
+RawVideoRTPSink
+::RawVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+                  unsigned height, unsigned width, unsigned depth,
+                  char const* sampling, char const* colorimetry)
+  : VideoRTPSink(env, RTPgs, rtpPayloadFormat, 90000, "RAW"),
+    fFmtpSDPLine(NULL), fSampling(NULL), fWidth(width), fHeight(height),
+    fDepth(depth), fColorimetry(NULL), fLineindex(0) {
+    
+  // Then use this 'config' string to construct our "a=fmtp:" SDP line:
+  unsigned fmtpSDPLineMaxSize = 200;// 200 => more than enough space
+  fFmtpSDPLine = new char[fmtpSDPLineMaxSize];
+  sprintf(fFmtpSDPLine, "a=fmtp:%d sampling=%s;width=%u;height=%u;depth=%u;colorimetry=%s\r\n",
+	  rtpPayloadType(), sampling, width, height, depth, colorimetry);
+
+  // Set parameters
+  fSampling = strDup(sampling);
+  fColorimetry = strDup(colorimetry);
+  setFrameParameters();
+}
+
+RawVideoRTPSink::~RawVideoRTPSink() {
+  delete[] fFmtpSDPLine;
+  delete[] fSampling;
+  delete[] fColorimetry;}
+
+char const* RawVideoRTPSink::auxSDPLine() {
+  return fFmtpSDPLine;
+}
+
+void RawVideoRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+             unsigned char* frameStart,
+             unsigned numBytesInFrame,
+             struct timeval framePresentationTime,
+             unsigned numRemainingBytes) {
+
+  unsigned * lengths = NULL;
+  unsigned * offsets= NULL;
+  unsigned nbLines = getNbLineInPacket(fragmentationOffset, lengths, offsets);
+  unsigned specialHeaderSize = 2 + (6 * nbLines);
+  u_int8_t* specialHeader = new u_int8_t[specialHeaderSize];
+
+  // Extended Sequence Number (not used)
+  specialHeader[0] = 0;
+  specialHeader[1] = 0;
+
+  for (unsigned i = 0; i < nbLines; i++) {
+    // detection of new line incrementation
+    if ((offsets[i] == 0) && fragmentationOffset != 0) {
+      fLineindex = fLineindex + fFrameParameters.scanLineIterationStep;
+    }
+
+    // Set length
+    specialHeader[2 + (i * 6) + 0] = lengths[i] >> 8;
+    specialHeader[2 + (i * 6) + 1] = (u_int8_t)lengths[i];
+
+    // Field Identification (false for us)
+    bool fieldIdent = false;
+
+    // Set line index
+    specialHeader[2 + (i * 6) + 2] = ((fLineindex >> 8) & 0x7F) | (fieldIdent << 7);
+    specialHeader[2 + (i * 6) + 3] = (u_int8_t)fLineindex;
+
+    // Set Continuation bit
+    bool continuationBit = (i < nbLines - 1) ? true : false;
+
+    // Set offset
+    specialHeader[2 + (i * 6) + 4] = ((offsets[i] >> 8) & 0x7F) | (continuationBit << 7);
+    specialHeader[2 + (i * 6) + 5] = (u_int8_t)offsets[i];
+  }
+
+  setSpecialHeaderBytes(specialHeader, specialHeaderSize);
+  
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit:
+    setMarkerBit();
+    // Reset line index
+    fLineindex = 0;
+  }
+
+  // Also set the RTP timestamp:
+  setTimestamp(framePresentationTime);
+
+  delete[] specialHeader;
+  delete[] lengths;
+  delete[] offsets;
+}
+
+Boolean RawVideoRTPSink::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+                               unsigned /*numBytesInFrame*/) const {
+  // Only one frame per packet:
+  return False;
+}
+
+unsigned RawVideoRTPSink::specialHeaderSize() const {
+  unsigned * lengths = NULL;
+  unsigned * offsets= NULL;
+  unsigned nbLines = getNbLineInPacket(curFragmentationOffset(), lengths, offsets);
+  delete[] lengths;
+  delete[] offsets;
+  return 2 + (6 * nbLines);
+}
+
+unsigned RawVideoRTPSink::getNbLineInPacket(unsigned fragOffset, unsigned * &lengths, unsigned * &offsets) const
+{
+  unsigned rtpHeaderSize = 12;
+  unsigned specialHeaderSize = 2; // Extended Sequence Nb
+  unsigned packetMaxSize = ourMaxPacketSize();
+  unsigned nbLines = 0;
+  unsigned remainingSizeInPacket;
+
+  if (fragOffset >= fFrameParameters.frameSize) {
+    envir() << "RawVideoRTPSink::getNbLineInPacket(): bad fragOffset " << fragOffset << "\n";
+    return 0;
+  }
+  unsigned lengthArray[100] = {0};
+  unsigned offsetArray[100] = {0};
+  unsigned curDataTotalLength = 0;
+  unsigned lineOffset = (fragOffset % fFrameParameters.scanLineSize);
+
+  unsigned remainingLineSize = fFrameParameters.scanLineSize - (fragOffset % fFrameParameters.scanLineSize);
+  while(1) {
+    if (packetMaxSize - specialHeaderSize - rtpHeaderSize - 6 <= curDataTotalLength) {
+      break; // packet sanity check
+    }
+
+    // add one line
+    nbLines ++;
+    specialHeaderSize += 6;
+
+    remainingSizeInPacket = packetMaxSize - specialHeaderSize - rtpHeaderSize - curDataTotalLength;
+    remainingSizeInPacket -= remainingSizeInPacket % fFrameParameters.pGroupSize; // use only multiple of pgroup
+    lengthArray[nbLines-1] = remainingLineSize < remainingSizeInPacket ? remainingLineSize : remainingSizeInPacket;
+    offsetArray[nbLines-1] = lineOffset * fFrameParameters.scanLineIterationStep / fFrameParameters.pGroupSize;
+    if (remainingLineSize >= remainingSizeInPacket) {
+      break; //packet full
+    }
+
+    remainingLineSize = fFrameParameters.scanLineSize;
+    curDataTotalLength += lengthArray[nbLines-1];
+    lineOffset = 0;
+
+    if (fragOffset + curDataTotalLength >= fFrameParameters.frameSize) {
+      break; // end of the frame.
+    }
+  }
+
+  lengths = new unsigned[nbLines];
+  offsets = new unsigned[nbLines];
+  for (unsigned i = 0; i < nbLines; i++) {
+    lengths[i] = lengthArray[i];
+    offsets[i] = offsetArray[i];
+  }
+  return nbLines;
+}
+
+unsigned RawVideoRTPSink::computeOverflowForNewFrame(unsigned newFrameSize) const {
+  unsigned initialOverflow = MultiFramedRTPSink::computeOverflowForNewFrame(newFrameSize);
+
+  // Adjust (increase) this overflow to be a multiple of the pgroup value
+  unsigned numFrameBytesUsed = newFrameSize - initialOverflow;
+  initialOverflow += numFrameBytesUsed % fFrameParameters.pGroupSize;
+
+  return initialOverflow;
+}
+
+void RawVideoRTPSink::setFrameParameters() {
+  fFrameParameters.scanLineIterationStep = 1;
+  if ((strncmp("RGB", fSampling, strlen(fSampling)) == 0) || (strncmp("BGR", fSampling, strlen(fSampling)) == 0)) {
+    switch (fDepth) {
+      case 8:
+        fFrameParameters.pGroupSize = 3;
+        fFrameParameters.nbOfPixelInPGroup = 1;
+        break;
+      case 10:
+        fFrameParameters.pGroupSize = 15;
+        fFrameParameters.nbOfPixelInPGroup = 4;
+        break;
+      case 12:
+        fFrameParameters.pGroupSize = 9;
+        fFrameParameters.nbOfPixelInPGroup = 2;
+        break;
+      case 16:
+        fFrameParameters.pGroupSize = 6;
+        fFrameParameters.nbOfPixelInPGroup = 1;
+        break;
+      default:
+        break;
+    }
+  }
+  else if ((strncmp("RGBA", fSampling, strlen(fSampling)) == 0) || (strncmp("BGRA", fSampling, strlen(fSampling)) == 0)) {
+    switch (fDepth) {
+      case 8:
+        fFrameParameters.pGroupSize = 4;
+        break;
+      case 10:
+        fFrameParameters.pGroupSize = 5;
+        break;
+      case 12:
+        fFrameParameters.pGroupSize = 6;
+        break;
+      case 16:
+        fFrameParameters.pGroupSize = 8;
+        break;
+      default:
+        break;
+    }
+    fFrameParameters.nbOfPixelInPGroup = 1;
+  } else if (strncmp("YCbCr-4:4:4", fSampling, strlen(fSampling)) == 0) {
+    switch (fDepth) {
+      case 8:
+        fFrameParameters.pGroupSize = 3;
+        fFrameParameters.nbOfPixelInPGroup = 1;
+        break;
+      case 10:
+        fFrameParameters.pGroupSize = 15;
+        fFrameParameters.nbOfPixelInPGroup = 4;
+        break;
+      case 12:
+        fFrameParameters.pGroupSize = 9;
+        fFrameParameters.nbOfPixelInPGroup = 2;
+        break;
+      case 16:
+        fFrameParameters.pGroupSize = 6;
+        fFrameParameters.nbOfPixelInPGroup = 1;
+        break;
+      default:
+        break;
+    }
+  } else if (strncmp("YCbCr-4:2:2", fSampling, strlen(fSampling)) == 0) {
+    switch (fDepth) {
+      case 8:
+        fFrameParameters.pGroupSize = 4;
+        break;
+      case 10:
+        fFrameParameters.pGroupSize = 5;
+        break;
+      case 12:
+        fFrameParameters.pGroupSize = 6;
+        break;
+      case 16:
+        fFrameParameters.pGroupSize = 8;
+        break;
+      default:
+        break;
+    }
+    fFrameParameters.nbOfPixelInPGroup = 2;
+  } else if (strncmp("YCbCr-4:1:1", fSampling, strlen(fSampling)) == 0) {
+    switch (fDepth) {
+      case 8:
+        fFrameParameters.pGroupSize = 6;
+        break;
+      case 10:
+        fFrameParameters.pGroupSize = 15;
+        break;
+      case 12:
+        fFrameParameters.pGroupSize = 9;
+        break;
+      case 16:
+        fFrameParameters.pGroupSize = 12;
+        break;
+      default:
+        break;
+    }
+    fFrameParameters.nbOfPixelInPGroup = 4;
+  } else if (strncmp("YCbCr-4:2:0", fSampling, strlen(fSampling)) == 0) {
+    switch (fDepth) {
+      case 8:
+        fFrameParameters.pGroupSize = 6;
+        break;
+      case 10:
+        fFrameParameters.pGroupSize = 15;
+        break;
+      case 12:
+        fFrameParameters.pGroupSize = 9;
+        break;
+      case 16:
+        fFrameParameters.pGroupSize = 12;
+        break;
+      default:
+        break;
+    }
+    fFrameParameters.nbOfPixelInPGroup = 4;
+    fFrameParameters.scanLineIterationStep = 2;
+  }
+  fFrameParameters.frameSize = fHeight * fWidth * fFrameParameters.pGroupSize / fFrameParameters.nbOfPixelInPGroup;
+  fFrameParameters.scanLineSize  = fWidth * fFrameParameters.pGroupSize / fFrameParameters.nbOfPixelInPGroup * fFrameParameters.scanLineIterationStep;
+}
diff --git a/liveMedia/RawVideoRTPSource.cpp b/liveMedia/RawVideoRTPSource.cpp
new file mode 100644
index 0000000..52b40be
--- /dev/null
+++ b/liveMedia/RawVideoRTPSource.cpp
@@ -0,0 +1,182 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Raw Video RTP Sources (RFC 4175)
+// Implementation
+
+#include "RawVideoRTPSource.hh"
+
+////////// RawVideoBufferedPacket and RawVideoBufferedPacketFactory //////////
+
+class RawVideoBufferedPacket: public BufferedPacket {
+public:
+  RawVideoBufferedPacket(RawVideoRTPSource* ourSource);
+  virtual ~RawVideoBufferedPacket();
+    
+private: // redefined virtual functions
+  virtual void getNextEnclosedFrameParameters(unsigned char*& framePtr,
+                                              unsigned dataSize,
+                                              unsigned& frameSize,
+                                              unsigned& frameDurationInMicroseconds);
+private:
+  RawVideoRTPSource* fOurSource;
+};
+    
+class RawVideoBufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+    
+
+////////// LineHeader //////////
+
+struct LineHeader {
+  u_int16_t length;
+  u_int16_t fieldIdAndLineNumber;
+  u_int16_t offsetWithinLine;
+};
+
+
+///////// RawVideoRTPSource implementation (RFC 4175) ////////
+
+RawVideoRTPSource*
+RawVideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			     unsigned char rtpPayloadFormat,
+                             unsigned rtpTimestampFrequency) {
+  return new RawVideoRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency);
+}
+
+RawVideoRTPSource
+::RawVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		    unsigned char rtpPayloadFormat,
+                    unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency,
+			 new RawVideoBufferedPacketFactory),
+    fNumLines(0), fNextLine(0), fLineHeaders(NULL) {
+}
+
+RawVideoRTPSource::~RawVideoRTPSource() {
+  delete[] fLineHeaders;
+}
+
+u_int16_t RawVideoRTPSource::currentLineNumber() const {
+  if (fNextLine == 0 || fLineHeaders == NULL) return 0; // we've called this function too soon!
+  return fLineHeaders[fNextLine-1].fieldIdAndLineNumber&0x7FFF;
+}
+
+u_int8_t RawVideoRTPSource::currentLineFieldId() const {
+  if (fNextLine == 0 || fLineHeaders == NULL) return 0; // we've called this function too soon!
+  return (fLineHeaders[fNextLine-1].fieldIdAndLineNumber&0x8000)>>15;
+}
+
+u_int16_t RawVideoRTPSource::currentOffsetWithinLine() const {
+  if (fNextLine == 0 || fLineHeaders == NULL) return 0; // we've called this function too soon!
+  return fLineHeaders[fNextLine-1].offsetWithinLine;
+}
+
+Boolean RawVideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  // The first 2 bytes of the header are the "Extended Sequence Number".
+  // In the current implementation, we ignore this.
+  if (packetSize < 2) return False;
+  headerStart += 2;
+  unsigned char* lineHeaderStart = headerStart;
+  packetSize -= 2;
+
+  // The rest of the header should consist of N*6 bytes (with N >= 1) for each line included.
+  // Count how many of these there are:
+  unsigned numLines = 0;
+  while (1) {
+    if (packetSize < 6) return False; // there's not enough room for another line header
+    ++numLines;
+    Boolean continuationBit = (headerStart[4]&0x80)>>7;
+    headerStart += 6;
+    packetSize -= 6;
+
+    // Check the "C" (continuation) bit of this header to see whether any more line headers follow:
+    if (continuationBit == 0) break; // no more line headers follow
+  }
+
+  // We now know how many lines are contained in this payload.  Allocate and fill in "fLineHeaders":
+  fNumLines = numLines; // ASSERT: >= 1
+  fNextLine = 0;
+  delete[] fLineHeaders; fLineHeaders = new LineHeader[fNumLines];
+  unsigned totalLength = 0;
+  for (unsigned i = 0; i < fNumLines; ++i) {
+    fLineHeaders[i].length = (lineHeaderStart[0]<<8) + lineHeaderStart[1];
+    totalLength += fLineHeaders[i].length;
+    fLineHeaders[i].fieldIdAndLineNumber = (lineHeaderStart[2]<<8) + lineHeaderStart[3];
+    fLineHeaders[i].offsetWithinLine = ((lineHeaderStart[4]&0x7F)<<8) + lineHeaderStart[5];
+    lineHeaderStart += 6;
+  }
+
+  // Make sure that we have enough bytes for all of the line lengths promised:
+  if (totalLength > packetSize) {
+    fNumLines = 0;
+    delete[] fLineHeaders; fLineHeaders = NULL;
+    return False;
+  }
+
+  // Everything looks good:
+  fCurrentPacketBeginsFrame
+    = (fLineHeaders[0].fieldIdAndLineNumber&0x7FFF) == 0 && fLineHeaders[0].offsetWithinLine == 0;
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit();
+  resultSpecialHeaderSize = headerStart - packet->data();
+  return True;
+}
+
+char const* RawVideoRTPSource::MIMEtype() const {
+  return "video/RAW";
+}
+
+
+////////// RawVideoBufferedPacket and RawVideoBufferedPacketFactory implementation //////////
+
+RawVideoBufferedPacket
+::RawVideoBufferedPacket(RawVideoRTPSource* ourSource)
+  : fOurSource(ourSource) {
+}
+
+RawVideoBufferedPacket::~RawVideoBufferedPacket() {
+}
+    
+void RawVideoBufferedPacket::getNextEnclosedFrameParameters(unsigned char*& /*framePtr*/,
+							    unsigned dataSize,
+							    unsigned& frameSize,
+							    unsigned& frameDurationInMicroseconds) {
+  frameDurationInMicroseconds = 0; // because all lines within the same packet are from the same frame
+
+  if (fOurSource->fNextLine >= fOurSource->fNumLines) {
+       fOurSource->envir() << "RawVideoBufferedPacket::nextEnclosedFrameParameters("
+			   << dataSize << "): data error ("
+			   << fOurSource->fNextLine << " >= " << fOurSource->fNumLines << ")!\n";
+    frameSize = dataSize;
+    return;
+  }
+
+  frameSize = fOurSource->fLineHeaders[fOurSource->fNextLine++].length;
+}
+
+BufferedPacket* RawVideoBufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* ourSource) {
+  return new RawVideoBufferedPacket((RawVideoRTPSource*)ourSource);
+}
diff --git a/liveMedia/SIPClient.cpp b/liveMedia/SIPClient.cpp
new file mode 100644
index 0000000..cab2416
--- /dev/null
+++ b/liveMedia/SIPClient.cpp
@@ -0,0 +1,962 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic SIP client
+// Implementation
+
+#include "SIPClient.hh"
+#include "GroupsockHelper.hh"
+
+#if defined(__WIN32__) || defined(_WIN32) || defined(_QNX4)
+#define _strncasecmp _strnicmp
+#else
+#define _strncasecmp strncasecmp
+#endif
+
+////////// SIPClient //////////
+
+SIPClient* SIPClient
+::createNew(UsageEnvironment& env,
+	    unsigned char desiredAudioRTPPayloadFormat,
+	    char const* mimeSubtype,
+	    int verbosityLevel, char const* applicationName) {
+  return new SIPClient(env, desiredAudioRTPPayloadFormat, mimeSubtype,
+		       verbosityLevel, applicationName);
+}
+
+void SIPClient::setUserAgentString(char const* userAgentName) {
+  if (userAgentName == NULL) return;
+
+  // Change the existing user agent header string:
+  char const* const formatStr = "User-Agent: %s\r\n";
+  unsigned const headerSize = strlen(formatStr) + strlen(userAgentName);
+  delete[] fUserAgentHeaderStr;
+  fUserAgentHeaderStr = new char[headerSize];
+  sprintf(fUserAgentHeaderStr, formatStr, userAgentName);
+  fUserAgentHeaderStrLen = strlen(fUserAgentHeaderStr);
+}
+
+SIPClient::SIPClient(UsageEnvironment& env,
+		     unsigned char desiredAudioRTPPayloadFormat,
+		     char const* mimeSubtype,
+		     int verbosityLevel, char const* applicationName)
+  : Medium(env),
+    fT1(500000 /* 500 ms */),
+    fDesiredAudioRTPPayloadFormat(desiredAudioRTPPayloadFormat),
+    fVerbosityLevel(verbosityLevel), fCSeq(0),
+    fUserAgentHeaderStr(NULL), fUserAgentHeaderStrLen(0),
+    fURL(NULL), fURLSize(0),
+    fToTagStr(NULL), fToTagStrSize(0),
+    fUserName(NULL), fUserNameSize(0),
+    fInviteSDPDescription(NULL), fInviteSDPDescriptionReturned(NULL),
+    fInviteCmd(NULL), fInviteCmdSize(0) {
+  if (mimeSubtype == NULL) mimeSubtype = "";
+  fMIMESubtype = strDup(mimeSubtype);
+  fMIMESubtypeSize = strlen(fMIMESubtype);
+
+  if (applicationName == NULL) applicationName = "";
+  fApplicationName = strDup(applicationName);
+  fApplicationNameSize = strlen(fApplicationName);
+
+  struct in_addr ourAddress;
+  ourAddress.s_addr = ourIPAddress(env); // hack
+  fOurAddressStr = strDup(AddressString(ourAddress).val());
+  fOurAddressStrSize = strlen(fOurAddressStr);
+
+  fOurSocket = new Groupsock(env, ourAddress, 0, 255);
+  if (fOurSocket == NULL) {
+    env << "ERROR: Failed to create socket for addr "
+	<< fOurAddressStr << ": "
+	<< env.getResultMsg() << "\n";
+  }
+
+  // Now, find out our source port number.  Hack: Do this by first trying to
+  // send a 0-length packet, so that the "getSourcePort()" call will work.
+  fOurSocket->output(envir(), (unsigned char*)"", 0);
+  Port srcPort(0);
+  getSourcePort(env, fOurSocket->socketNum(), srcPort);
+  if (srcPort.num() != 0) {
+    fOurPortNum = ntohs(srcPort.num());
+  } else {
+    // No luck.  Try again using a default port number:
+    fOurPortNum = 5060;
+    delete fOurSocket;
+    fOurSocket = new Groupsock(env, ourAddress, fOurPortNum, 255);
+    if (fOurSocket == NULL) {
+      env << "ERROR: Failed to create socket for addr "
+	  << fOurAddressStr << ", port "
+	  << fOurPortNum << ": "
+	  << env.getResultMsg() << "\n";
+    }
+  }
+
+  // Set the "User-Agent:" header to use in each request:
+  char const* const libName = "LIVE555 Streaming Media v";
+  char const* const libVersionStr = LIVEMEDIA_LIBRARY_VERSION_STRING;
+  char const* libPrefix; char const* libSuffix;
+  if (applicationName == NULL || applicationName[0] == '\0') {
+    applicationName = libPrefix = libSuffix = "";
+  } else {
+    libPrefix = " (";
+    libSuffix = ")";
+  }
+  unsigned userAgentNameSize
+    = fApplicationNameSize + strlen(libPrefix) + strlen(libName) + strlen(libVersionStr) + strlen(libSuffix) + 1;
+  char* userAgentName = new char[userAgentNameSize];
+  sprintf(userAgentName, "%s%s%s%s%s",
+	  applicationName, libPrefix, libName, libVersionStr, libSuffix);
+  setUserAgentString(userAgentName);
+  delete[] userAgentName;
+
+  reset();
+}
+
+SIPClient::~SIPClient() {
+  reset();
+
+  delete[] fUserAgentHeaderStr;
+  delete fOurSocket;
+  delete[] (char*)fOurAddressStr;
+  delete[] (char*)fApplicationName;
+  delete[] (char*)fMIMESubtype;
+}
+
+void SIPClient::reset() {
+  fWorkingAuthenticator = NULL;
+  delete[] fInviteCmd; fInviteCmd = NULL; fInviteCmdSize = 0;
+  delete[] fInviteSDPDescription; fInviteSDPDescription = NULL;
+
+  delete[] (char*)fUserName; fUserName = strDup(fApplicationName);
+  fUserNameSize = strlen(fUserName);
+
+  fValidAuthenticator.reset();
+
+  delete[] (char*)fToTagStr; fToTagStr = NULL; fToTagStrSize = 0;
+  fServerPortNum = 0;
+  fServerAddress.s_addr = 0;
+  delete[] (char*)fURL; fURL = NULL; fURLSize = 0;
+}
+
+void SIPClient::setProxyServer(unsigned proxyServerAddress,
+			       portNumBits proxyServerPortNum) {
+  fServerAddress.s_addr = proxyServerAddress;
+  fServerPortNum = proxyServerPortNum;
+  if (fOurSocket != NULL) {
+    fOurSocket->changeDestinationParameters(fServerAddress,
+					    fServerPortNum, 255);
+  }
+}
+
+static char* getLine(char* startOfLine) {
+  // returns the start of the next line, or NULL if none
+  for (char* ptr = startOfLine; *ptr != '\0'; ++ptr) {
+    if (*ptr == '\r' || *ptr == '\n') {
+      // We found the end of the line
+      *ptr++ = '\0';
+      if (*ptr == '\n') ++ptr;
+      return ptr;
+    }
+  }
+
+  return NULL;
+}
+
+char* SIPClient::invite(char const* url, Authenticator* authenticator) {
+  // First, check whether "url" contains a username:password to be used:
+  char* username; char* password;
+  if (authenticator == NULL
+      && parseSIPURLUsernamePassword(url, username, password)) {
+    char* result = inviteWithPassword(url, username, password);
+    delete[] username; delete[] password; // they were dynamically allocated
+    return result;
+  }
+
+  if (!processURL(url)) return NULL;
+
+  delete[] (char*)fURL; fURL = strDup(url);
+  fURLSize = strlen(fURL);
+
+  fCallId = our_random32();
+  fFromTag = our_random32();
+
+  return invite1(authenticator);
+}
+
+char* SIPClient::invite1(Authenticator* authenticator) {
+  do {
+    // Send the INVITE command:
+
+    // First, construct an authenticator string:
+    fValidAuthenticator.reset();
+    fWorkingAuthenticator = authenticator;
+    char* authenticatorStr
+      = createAuthenticatorString(fWorkingAuthenticator, "INVITE", fURL);
+
+    // Then, construct the SDP description to be sent in the INVITE:
+    char* rtpmapLine;
+    unsigned rtpmapLineSize;
+    if (fMIMESubtypeSize > 0) {
+      char const* const rtpmapFmt =
+	"a=rtpmap:%u %s/8000\r\n";
+      unsigned rtpmapFmtSize = strlen(rtpmapFmt)
+	+ 3 /* max char len */ + fMIMESubtypeSize;
+      rtpmapLine = new char[rtpmapFmtSize];
+      sprintf(rtpmapLine, rtpmapFmt,
+	      fDesiredAudioRTPPayloadFormat, fMIMESubtype);
+      rtpmapLineSize = strlen(rtpmapLine);
+    } else {
+      // Static payload type => no "a=rtpmap:" line
+      rtpmapLine = strDup("");
+      rtpmapLineSize = 0;
+    }
+    char const* const inviteSDPFmt =
+      "v=0\r\n"
+      "o=- %u %u IN IP4 %s\r\n"
+      "s=%s session\r\n"
+      "c=IN IP4 %s\r\n"
+      "t=0 0\r\n"
+      "m=audio %u RTP/AVP %u\r\n"
+      "%s";
+    unsigned inviteSDPFmtSize = strlen(inviteSDPFmt)
+      + 20 /* max int len */ + 20 + fOurAddressStrSize
+      + fApplicationNameSize
+      + fOurAddressStrSize
+      + 5 /* max short len */ + 3 /* max char len */
+      + rtpmapLineSize;
+    delete[] fInviteSDPDescription;
+    fInviteSDPDescription = new char[inviteSDPFmtSize];
+    sprintf(fInviteSDPDescription, inviteSDPFmt,
+	    fCallId, fCSeq, fOurAddressStr,
+	    fApplicationName,
+	    fOurAddressStr,
+	    fClientStartPortNum, fDesiredAudioRTPPayloadFormat,
+	    rtpmapLine);
+    unsigned inviteSDPSize = strlen(fInviteSDPDescription);
+    delete[] rtpmapLine;
+
+    char const* const cmdFmt =
+      "INVITE %s SIP/2.0\r\n"
+      "From: %s <sip:%s@%s>;tag=%u\r\n"
+      "Via: SIP/2.0/UDP %s:%u\r\n"
+      "Max-Forwards: 70\r\n"
+      "To: %s\r\n"
+      "Contact: sip:%s@%s:%u\r\n"
+      "Call-ID: %u@%s\r\n"
+      "CSeq: %d INVITE\r\n"
+      "Content-Type: application/sdp\r\n"
+      "%s" /* Proxy-Authorization: line (if any) */
+      "%s" /* User-Agent: line */
+      "Content-Length: %d\r\n\r\n"
+      "%s";
+    unsigned inviteCmdSize = strlen(cmdFmt)
+      + fURLSize
+      + 2*fUserNameSize + fOurAddressStrSize + 20 /* max int len */
+      + fOurAddressStrSize + 5 /* max port len */
+      + fURLSize
+      + fUserNameSize + fOurAddressStrSize + 5
+      + 20 + fOurAddressStrSize
+      + 20
+      + strlen(authenticatorStr)
+      + fUserAgentHeaderStrLen
+      + 20
+      + inviteSDPSize;
+    delete[] fInviteCmd; fInviteCmd = new char[inviteCmdSize];
+    sprintf(fInviteCmd, cmdFmt,
+	    fURL,
+	    fUserName, fUserName, fOurAddressStr, fFromTag,
+	    fOurAddressStr, fOurPortNum,
+	    fURL,
+	    fUserName, fOurAddressStr, fOurPortNum,
+	    fCallId, fOurAddressStr,
+	    ++fCSeq,
+	    authenticatorStr,
+	    fUserAgentHeaderStr,
+	    inviteSDPSize,
+	    fInviteSDPDescription);
+    fInviteCmdSize = strlen(fInviteCmd);
+    delete[] authenticatorStr;
+
+    // Before sending the "INVITE", arrange to handle any response packets,
+    // and set up timers:
+    fInviteClientState = Calling;
+    fEventLoopStopFlag = 0;
+    TaskScheduler& sched = envir().taskScheduler(); // abbrev.
+    sched.turnOnBackgroundReadHandling(fOurSocket->socketNum(),
+				       &inviteResponseHandler, this);
+    fTimerALen = 1*fT1; // initially
+    fTimerACount = 0; // initially
+    fTimerA = sched.scheduleDelayedTask(fTimerALen, timerAHandler, this);
+    fTimerB = sched.scheduleDelayedTask(64*fT1, timerBHandler, this);
+    fTimerD = NULL; // for now
+
+    if (!sendINVITE()) break;
+
+    // Enter the event loop, to handle response packets, and timeouts:
+    envir().taskScheduler().doEventLoop(&fEventLoopStopFlag);
+
+    // We're finished with this "INVITE".
+    // Turn off response handling and timers:
+    sched.turnOffBackgroundReadHandling(fOurSocket->socketNum());
+    sched.unscheduleDelayedTask(fTimerA);
+    sched.unscheduleDelayedTask(fTimerB);
+    sched.unscheduleDelayedTask(fTimerD);
+
+    // NOTE: We return the SDP description that we used in the "INVITE",
+    // not the one that we got from the server.
+    // ##### Later: match the codecs in the response (offer, answer) #####
+    if (fInviteSDPDescription != NULL) {
+      return strDup(fInviteSDPDescription);
+    }
+  } while (0);
+
+  return NULL;
+}
+
+void SIPClient::inviteResponseHandler(void* clientData, int /*mask*/) {
+  SIPClient* client = (SIPClient*)clientData;
+  unsigned responseCode = client->getResponseCode();
+  client->doInviteStateMachine(responseCode);
+}
+
+// Special 'response codes' that represent timers expiring:
+unsigned const timerAFires = 0xAAAAAAAA;
+unsigned const timerBFires = 0xBBBBBBBB;
+unsigned const timerDFires = 0xDDDDDDDD;
+
+void SIPClient::timerAHandler(void* clientData) {
+  SIPClient* client = (SIPClient*)clientData;
+  client->fTimerA = NULL;
+  if (client->fVerbosityLevel >= 1) {
+    client->envir() << "RETRANSMISSION " << ++client->fTimerACount
+		    << ", after " << client->fTimerALen/1000000.0
+		    << " additional seconds\n";
+  }
+  client->doInviteStateMachine(timerAFires);
+}
+
+void SIPClient::timerBHandler(void* clientData) {
+  SIPClient* client = (SIPClient*)clientData;
+  client->fTimerB = NULL;
+  if (client->fVerbosityLevel >= 1) {
+    client->envir() << "RETRANSMISSION TIMEOUT, after "
+		    << 64*client->fT1/1000000.0 << " seconds\n";
+    fflush(stderr);
+  }
+  client->doInviteStateMachine(timerBFires);
+}
+
+void SIPClient::timerDHandler(void* clientData) {
+  SIPClient* client = (SIPClient*)clientData;
+  client->fTimerD = NULL;
+  if (client->fVerbosityLevel >= 1) {
+    client->envir() << "TIMER D EXPIRED\n";
+  }
+  client->doInviteStateMachine(timerDFires);
+}
+
+void SIPClient::doInviteStateMachine(unsigned responseCode) {
+  // Implement the state transition diagram (RFC 3261, Figure 5)
+  TaskScheduler& sched = envir().taskScheduler(); // abbrev.
+  switch (fInviteClientState) {
+    case Calling: {
+      if (responseCode == timerAFires) {
+	// Restart timer A (with double the timeout interval):
+	fTimerALen *= 2;
+	fTimerA
+	  = sched.scheduleDelayedTask(fTimerALen, timerAHandler, this);
+
+	fInviteClientState = Calling;
+	if (!sendINVITE()) doInviteStateTerminated(0);
+      } else {
+	// Turn off timers A & B before moving to a new state:
+	sched.unscheduleDelayedTask(fTimerA);
+	sched.unscheduleDelayedTask(fTimerB);
+
+	if (responseCode == timerBFires) {
+	  envir().setResultMsg("No response from server");
+	  doInviteStateTerminated(0);
+	} else if (responseCode >= 100 && responseCode <= 199) {
+	  fInviteClientState = Proceeding;
+	} else if (responseCode >= 200 && responseCode <= 299) {
+	  doInviteStateTerminated(responseCode);
+	} else if (responseCode >= 400 && responseCode <= 499) {
+	  doInviteStateTerminated(responseCode);
+	      // this isn't what the spec says, but it seems right...
+	} else if (responseCode >= 300 && responseCode <= 699) {
+	  fInviteClientState = Completed;
+	  fTimerD
+	    = sched.scheduleDelayedTask(32000000, timerDHandler, this);
+	  if (!sendACK()) doInviteStateTerminated(0);
+	}
+      }
+      break;
+    }
+
+    case Proceeding: {
+      if (responseCode >= 100 && responseCode <= 199) {
+	fInviteClientState = Proceeding;
+      } else if (responseCode >= 200 && responseCode <= 299) {
+	doInviteStateTerminated(responseCode);
+      } else if (responseCode >= 400 && responseCode <= 499) {
+	doInviteStateTerminated(responseCode);
+	    // this isn't what the spec says, but it seems right...
+      } else if (responseCode >= 300 && responseCode <= 699) {
+	fInviteClientState = Completed;
+	fTimerD = sched.scheduleDelayedTask(32000000, timerDHandler, this);
+	if (!sendACK()) doInviteStateTerminated(0);
+      }
+      break;
+    }
+
+    case Completed: {
+      if (responseCode == timerDFires) {
+	envir().setResultMsg("Transaction terminated");
+	doInviteStateTerminated(0);
+      } else if (responseCode >= 300 && responseCode <= 699) {
+	fInviteClientState = Completed;
+	if (!sendACK()) doInviteStateTerminated(0);
+      }
+      break;
+    }
+
+    case Terminated: {
+	doInviteStateTerminated(responseCode);
+	break;
+    }
+  }
+}
+
+void SIPClient::doInviteStateTerminated(unsigned responseCode) {
+  fInviteClientState = Terminated; // FWIW...
+  if (responseCode < 200 || responseCode > 299) {
+    // We failed, so return NULL;
+    delete[] fInviteSDPDescription; fInviteSDPDescription = NULL;
+    delete[] fInviteSDPDescriptionReturned; fInviteSDPDescriptionReturned = NULL;
+  }
+
+  // Unblock the event loop:
+  fEventLoopStopFlag = ~0;
+}
+
+Boolean SIPClient::sendINVITE() {
+  if (!sendRequest(fInviteCmd, fInviteCmdSize)) {
+    envir().setResultErrMsg("INVITE send() failed: ");
+    return False;
+  }
+  return True;
+}
+
+unsigned SIPClient::getResponseCode() {
+  unsigned responseCode = 0;
+  do {
+    // Get the response from the server:
+    unsigned const readBufSize = 10000;
+    char readBuffer[readBufSize+1]; char* readBuf = readBuffer;
+
+    char* firstLine = NULL;
+    char* nextLineStart = NULL;
+    unsigned bytesRead = getResponse(readBuf, readBufSize);
+    if (bytesRead == 0) break;
+    if (fVerbosityLevel >= 1) {
+      envir() << "Received INVITE response: " << readBuf << "\n";
+    }
+
+    // Inspect the first line to get the response code:
+    firstLine = readBuf;
+    nextLineStart = getLine(firstLine);
+    if (!parseResponseCode(firstLine, responseCode)) break;
+
+    if (responseCode != 200) {
+      if (responseCode >= 400 && responseCode <= 499
+	  && fWorkingAuthenticator != NULL) {
+	// We have an authentication failure, so fill in
+	// "*fWorkingAuthenticator" using the contents of a following
+	// "Proxy-Authenticate:" or "WWW-Authenticate:" line.  (Once we compute a 'response' for
+	// "fWorkingAuthenticator", it can be used in a subsequent request
+	// - that will hopefully succeed.)
+	char* lineStart;
+	while (1) {
+	  lineStart = nextLineStart;
+	  if (lineStart == NULL) break;
+
+	  nextLineStart = getLine(lineStart);
+	  if (lineStart[0] == '\0') break; // this is a blank line
+
+	  char* realm = strDupSize(lineStart);
+	  char* nonce = strDupSize(lineStart);
+	  // ##### Check for the format of "Proxy-Authenticate:" lines from
+	  // ##### known server types.
+	  // ##### This is a crock! We should make the parsing more general
+          Boolean foundAuthenticateHeader = False;
+	  if (
+	      // Asterisk #####
+	      sscanf(lineStart, "Proxy-Authenticate: Digest realm=\"%[^\"]\", nonce=\"%[^\"]\"",
+		     realm, nonce) == 2 ||
+	      sscanf(lineStart, "WWW-Authenticate: Digest realm=\"%[^\"]\", nonce=\"%[^\"]\"",
+		     realm, nonce) == 2 ||
+	      // Cisco ATA #####
+	      sscanf(lineStart, "Proxy-Authenticate: Digest algorithm=MD5,domain=\"%*[^\"]\",nonce=\"%[^\"]\", realm=\"%[^\"]\"",
+		     nonce, realm) == 2) {
+            fWorkingAuthenticator->setRealmAndNonce(realm, nonce);
+            foundAuthenticateHeader = True;
+          }
+          delete[] realm; delete[] nonce;
+          if (foundAuthenticateHeader) break;
+	}
+      }
+      envir().setResultMsg("cannot handle INVITE response: ", firstLine);
+      break;
+    }
+
+    // Skip every subsequent header line, until we see a blank line.
+    // While doing so, check for "To:" and "Content-Length:" lines.
+    // The remaining data is assumed to be the SDP descriptor that we want.
+    // We should really do some more checking on the headers here - e.g., to
+    // check for "Content-type: application/sdp", "CSeq", etc. #####
+    int contentLength = -1;
+    char* lineStart;
+    while (1) {
+      lineStart = nextLineStart;
+      if (lineStart == NULL) break;
+
+      nextLineStart = getLine(lineStart);
+      if (lineStart[0] == '\0') break; // this is a blank line
+
+      char* toTagStr = strDupSize(lineStart);
+      if (sscanf(lineStart, "To:%*[^;]; tag=%s", toTagStr) == 1) {
+	delete[] (char*)fToTagStr; fToTagStr = strDup(toTagStr);
+	fToTagStrSize = strlen(fToTagStr);
+      }
+      delete[] toTagStr;
+
+      if (sscanf(lineStart, "Content-Length: %d", &contentLength) == 1
+          || sscanf(lineStart, "Content-length: %d", &contentLength) == 1) {
+        if (contentLength < 0) {
+          envir().setResultMsg("Bad \"Content-Length:\" header: \"",
+                               lineStart, "\"");
+          break;
+        }
+      }
+    }
+
+    // We're now at the end of the response header lines
+    if (lineStart == NULL) {
+      envir().setResultMsg("no content following header lines: ", readBuf);
+      break;
+    }
+
+    // Use the remaining data as the SDP descr, but first, check
+    // the "Content-Length:" header (if any) that we saw.  We may need to
+    // read more data, or we may have extraneous data in the buffer.
+    char* bodyStart = nextLineStart;
+    if (bodyStart != NULL && contentLength >= 0) {
+      // We saw a "Content-Length:" header
+      unsigned numBodyBytes = &readBuf[bytesRead] - bodyStart;
+      if (contentLength > (int)numBodyBytes) {
+        // We need to read more data.  First, make sure we have enough
+        // space for it:
+        unsigned numExtraBytesNeeded = contentLength - numBodyBytes;
+#ifdef USING_TCP
+	// THIS CODE WORKS ONLY FOR TCP: #####
+        unsigned remainingBufferSize
+          = readBufSize - (bytesRead + (readBuf - readBuffer));
+        if (numExtraBytesNeeded > remainingBufferSize) {
+          char tmpBuf[200];
+          sprintf(tmpBuf, "Read buffer size (%d) is too small for \"Content-Length:\" %d (need a buffer size of >= %d bytes\n",
+                  readBufSize, contentLength,
+                  readBufSize + numExtraBytesNeeded - remainingBufferSize);
+          envir().setResultMsg(tmpBuf);
+          break;
+        }
+
+        // Keep reading more data until we have enough:
+        if (fVerbosityLevel >= 1) {
+          envir() << "Need to read " << numExtraBytesNeeded
+		  << " extra bytes\n";
+        }
+        while (numExtraBytesNeeded > 0) {
+          char* ptr = &readBuf[bytesRead];
+	  unsigned bytesRead2;
+	  struct sockaddr_in fromAddr;
+	  Boolean readSuccess
+	    = fOurSocket->handleRead((unsigned char*)ptr,
+				     numExtraBytesNeeded,
+				     bytesRead2, fromAddr);
+          if (!readSuccess) break;
+          ptr[bytesRead2] = '\0';
+          if (fVerbosityLevel >= 1) {
+            envir() << "Read " << bytesRead2
+		    << " extra bytes: " << ptr << "\n";
+          }
+
+          bytesRead += bytesRead2;
+          numExtraBytesNeeded -= bytesRead2;
+        }
+#endif
+        if (numExtraBytesNeeded > 0) break; // one of the reads failed
+      }
+
+      bodyStart[contentLength] = '\0'; // trims any extra data
+      delete[] fInviteSDPDescriptionReturned; fInviteSDPDescriptionReturned = strDup(bodyStart);
+    }
+  } while (0);
+
+  return responseCode;
+}
+
+char* SIPClient::inviteWithPassword(char const* url, char const* username,
+				    char const* password) {
+  delete[] (char*)fUserName; fUserName = strDup(username);
+  fUserNameSize = strlen(fUserName);
+
+  Authenticator authenticator(username, password);
+  char* inviteResult = invite(url, &authenticator);
+  if (inviteResult != NULL) {
+    // We are already authorized
+    return inviteResult;
+  }
+
+  // The "realm" and "nonce" fields should have been filled in:
+  if (authenticator.realm() == NULL || authenticator.nonce() == NULL) {
+    // We haven't been given enough information to try again, so fail:
+    return NULL;
+  }
+
+  // Try again (but with the same CallId):
+  inviteResult = invite1(&authenticator);
+  if (inviteResult != NULL) {
+    // The authenticator worked, so use it in future requests:
+    fValidAuthenticator = authenticator;
+  }
+
+  return inviteResult;
+}
+
+Boolean SIPClient::sendACK() {
+  char* cmd = NULL;
+  do {
+    char const* const cmdFmt =
+      "ACK %s SIP/2.0\r\n"
+      "From: %s <sip:%s@%s>;tag=%u\r\n"
+      "Via: SIP/2.0/UDP %s:%u\r\n"
+      "Max-Forwards: 70\r\n"
+      "To: %s;tag=%s\r\n"
+      "Call-ID: %u@%s\r\n"
+      "CSeq: %d ACK\r\n"
+      "Content-Length: 0\r\n\r\n";
+    unsigned cmdSize = strlen(cmdFmt)
+      + fURLSize
+      + 2*fUserNameSize + fOurAddressStrSize + 20 /* max int len */
+      + fOurAddressStrSize + 5 /* max port len */
+      + fURLSize + fToTagStrSize
+      + 20 + fOurAddressStrSize
+      + 20;
+    cmd = new char[cmdSize];
+    sprintf(cmd, cmdFmt,
+	    fURL,
+	    fUserName, fUserName, fOurAddressStr, fFromTag,
+	    fOurAddressStr, fOurPortNum,
+	    fURL, fToTagStr,
+	    fCallId, fOurAddressStr,
+	    fCSeq /* note: it's the same as before; not incremented */);
+
+    if (!sendRequest(cmd, strlen(cmd))) {
+      envir().setResultErrMsg("ACK send() failed: ");
+      break;
+    }
+
+    delete[] cmd;
+    return True;
+  } while (0);
+
+  delete[] cmd;
+  return False;
+}
+
+Boolean SIPClient::sendBYE() {
+  // NOTE: This should really be retransmitted, for reliability #####
+  char* cmd = NULL;
+  do {
+    char const* const cmdFmt =
+      "BYE %s SIP/2.0\r\n"
+      "From: %s <sip:%s@%s>;tag=%u\r\n"
+      "Via: SIP/2.0/UDP %s:%u\r\n"
+      "Max-Forwards: 70\r\n"
+      "To: %s;tag=%s\r\n"
+      "Call-ID: %u@%s\r\n"
+      "CSeq: %d BYE\r\n"
+      "Content-Length: 0\r\n\r\n";
+    unsigned cmdSize = strlen(cmdFmt)
+      + fURLSize
+      + 2*fUserNameSize + fOurAddressStrSize + 20 /* max int len */
+      + fOurAddressStrSize + 5 /* max port len */
+      + fURLSize + fToTagStrSize
+      + 20 + fOurAddressStrSize
+      + 20;
+    cmd = new char[cmdSize];
+    sprintf(cmd, cmdFmt,
+	    fURL,
+	    fUserName, fUserName, fOurAddressStr, fFromTag,
+	    fOurAddressStr, fOurPortNum,
+	    fURL, fToTagStr,
+	    fCallId, fOurAddressStr,
+	    ++fCSeq);
+
+    if (!sendRequest(cmd, strlen(cmd))) {
+      envir().setResultErrMsg("BYE send() failed: ");
+      break;
+    }
+
+    delete[] cmd;
+    return True;
+  } while (0);
+
+  delete[] cmd;
+  return False;
+}
+
+Boolean SIPClient::processURL(char const* url) {
+  do {
+    // If we don't already have a server address/port, then
+    // get these by parsing the URL:
+    if (fServerAddress.s_addr == 0) {
+      NetAddress destAddress;
+      if (!parseSIPURL(envir(), url, destAddress, fServerPortNum)) break;
+      fServerAddress.s_addr = *(unsigned*)(destAddress.data());
+
+      if (fOurSocket != NULL) {
+	fOurSocket->changeDestinationParameters(fServerAddress,
+						fServerPortNum, 255);
+      }
+    }
+
+    return True;
+  } while (0);
+
+  return False;
+}
+
+Boolean SIPClient::parseSIPURL(UsageEnvironment& env, char const* url,
+			       NetAddress& address,
+			       portNumBits& portNum) {
+  do {
+    // Parse the URL as "sip:<username>@<address>:<port>/<etc>"
+    // (with ":<port>" and "/<etc>" optional)
+    // Also, skip over any "<username>[:<password>]@" preceding <address>
+    char const* prefix = "sip:";
+    unsigned const prefixLength = 4;
+    if (_strncasecmp(url, prefix, prefixLength) != 0) {
+      env.setResultMsg("URL is not of the form \"", prefix, "\"");
+      break;
+    }
+
+    unsigned const parseBufferSize = 100;
+    char parseBuffer[parseBufferSize];
+    unsigned addressStartIndex = prefixLength;
+    while (url[addressStartIndex] != '\0'
+	   && url[addressStartIndex++] != '@') {}
+    char const* from = &url[addressStartIndex];
+
+    // Skip over any "<username>[:<password>]@"
+    char const* from1 = from;
+    while (*from1 != '\0' && *from1 != '/') {
+      if (*from1 == '@') {
+	from = ++from1;
+	break;
+      }
+      ++from1;
+    }
+
+    char* to = &parseBuffer[0];
+    unsigned i;
+    for (i = 0; i < parseBufferSize; ++i) {
+      if (*from == '\0' || *from == ':' || *from == '/') {
+	// We've completed parsing the address
+	*to = '\0';
+	break;
+      }
+      *to++ = *from++;
+    }
+    if (i == parseBufferSize) {
+      env.setResultMsg("URL is too long");
+      break;
+    }
+
+    NetAddressList addresses(parseBuffer);
+    if (addresses.numAddresses() == 0) {
+      env.setResultMsg("Failed to find network address for \"",
+			   parseBuffer, "\"");
+      break;
+    }
+    address = *(addresses.firstAddress());
+
+    portNum = 5060; // default value
+    char nextChar = *from;
+    if (nextChar == ':') {
+      int portNumInt;
+      if (sscanf(++from, "%d", &portNumInt) != 1) {
+	env.setResultMsg("No port number follows ':'");
+	break;
+      }
+      if (portNumInt < 1 || portNumInt > 65535) {
+	env.setResultMsg("Bad port number");
+	break;
+      }
+      portNum = (portNumBits)portNumInt;
+    }
+
+    return True;
+  } while (0);
+
+  return False;
+}
+
+Boolean SIPClient::parseSIPURLUsernamePassword(char const* url,
+					       char*& username,
+					       char*& password) {
+  username = password = NULL; // by default
+  do {
+    // Parse the URL as "sip:<username>[:<password>]@<whatever>"
+    char const* prefix = "sip:";
+    unsigned const prefixLength = 4;
+    if (_strncasecmp(url, prefix, prefixLength) != 0) break;
+
+    // Look for the ':' and '@':
+    unsigned usernameIndex = prefixLength;
+    unsigned colonIndex = 0, atIndex = 0;
+    for (unsigned i = usernameIndex; url[i] != '\0' && url[i] != '/'; ++i) {
+      if (url[i] == ':' && colonIndex == 0) {
+	colonIndex = i;
+      } else if (url[i] == '@') {
+        atIndex = i;
+        break; // we're done
+      }
+    }
+    if (atIndex == 0) break; // no '@' found
+
+    char* urlCopy = strDup(url);
+    urlCopy[atIndex] = '\0';
+    if (colonIndex > 0) {
+      urlCopy[colonIndex] = '\0';
+      password = strDup(&urlCopy[colonIndex+1]);
+    } else {
+      password = strDup("");
+    }
+    username = strDup(&urlCopy[usernameIndex]);
+    delete[] urlCopy;
+
+    return True;
+  } while (0);
+
+  return False;
+}
+
+char*
+SIPClient::createAuthenticatorString(Authenticator const* authenticator,
+				      char const* cmd, char const* url) {
+  if (authenticator != NULL && authenticator->realm() != NULL
+      && authenticator->nonce() != NULL && authenticator->username() != NULL
+      && authenticator->password() != NULL) {
+    // We've been provided a filled-in authenticator, so use it:
+    char const* const authFmt
+      = "Authorization: Digest username=\"%s\", realm=\"%s\", nonce=\"%s\", response=\"%s\", uri=\"%s\"\r\n";
+    char const* response = authenticator->computeDigestResponse(cmd, url);
+    unsigned authBufSize = strlen(authFmt)
+      + strlen(authenticator->username()) + strlen(authenticator->realm())
+      + strlen(authenticator->nonce()) + strlen(url) + strlen(response);
+    char* authenticatorStr = new char[authBufSize];
+    sprintf(authenticatorStr, authFmt,
+	    authenticator->username(), authenticator->realm(),
+	    authenticator->nonce(), response, url);
+    authenticator->reclaimDigestResponse(response);
+
+    return authenticatorStr;
+  }
+
+  return strDup("");
+}
+
+Boolean SIPClient::sendRequest(char const* requestString,
+			       unsigned requestLength) {
+  if (fVerbosityLevel >= 1) {
+    envir() << "Sending request: " << requestString << "\n";
+  }
+  // NOTE: We should really check that "requestLength" is not #####
+  // too large for UDP (see RFC 3261, section 18.1.1) #####
+  return fOurSocket->output(envir(), (unsigned char*)requestString, requestLength);
+}
+
+unsigned SIPClient::getResponse(char*& responseBuffer,
+				unsigned responseBufferSize) {
+  if (responseBufferSize == 0) return 0; // just in case...
+  responseBuffer[0] = '\0'; // ditto
+
+  // Keep reading data from the socket until we see "\r\n\r\n" (except
+  // at the start), or until we fill up our buffer.
+  // Don't read any more than this.
+  char* p = responseBuffer;
+  Boolean haveSeenNonCRLF = False;
+  int bytesRead = 0;
+  while (bytesRead < (int)responseBufferSize) {
+    unsigned bytesReadNow;
+    struct sockaddr_in fromAddr;
+    unsigned char* toPosn = (unsigned char*)(responseBuffer+bytesRead);
+    Boolean readSuccess
+      = fOurSocket->handleRead(toPosn, responseBufferSize-bytesRead,
+			       bytesReadNow, fromAddr);
+    if (!readSuccess || bytesReadNow == 0) {
+      envir().setResultMsg("SIP response was truncated");
+      break;
+    }
+    bytesRead += bytesReadNow;
+
+    // Check whether we have "\r\n\r\n":
+    char* lastToCheck = responseBuffer+bytesRead-4;
+    if (lastToCheck < responseBuffer) continue;
+    for (; p <= lastToCheck; ++p) {
+      if (haveSeenNonCRLF) {
+        if (*p == '\r' && *(p+1) == '\n' &&
+            *(p+2) == '\r' && *(p+3) == '\n') {
+          responseBuffer[bytesRead] = '\0';
+
+          // Before returning, trim any \r or \n from the start:
+          while (*responseBuffer == '\r' || *responseBuffer == '\n') {
+            ++responseBuffer;
+            --bytesRead;
+          }
+          return bytesRead;
+        }
+      } else {
+        if (*p != '\r' && *p != '\n') {
+          haveSeenNonCRLF = True;
+        }
+      }
+    }
+  }
+
+  return 0;
+}
+
+Boolean SIPClient::parseResponseCode(char const* line,
+				      unsigned& responseCode) {
+  if (sscanf(line, "%*s%u", &responseCode) != 1) {
+    envir().setResultMsg("no response code in line: \"", line, "\"");
+    return False;
+  }
+
+  return True;
+}
diff --git a/liveMedia/SRTPCryptographicContext.cpp b/liveMedia/SRTPCryptographicContext.cpp
new file mode 100644
index 0000000..2fb8235
--- /dev/null
+++ b/liveMedia/SRTPCryptographicContext.cpp
@@ -0,0 +1,464 @@
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// This code may not be copied or used in any form without permission from Live Networks, Inc.
+//
+// The SRTP 'Cryptographic Context', used in all of our uses of SRTP.
+// Implementation
+
+#include "SRTPCryptographicContext.hh"
+#ifndef NO_OPENSSL
+#include "HMAC_SHA1.hh"
+#include <openssl/aes.h>
+#endif
+
+#ifdef DEBUG
+#include <stdio.h>
+#endif
+
+SRTPCryptographicContext
+::SRTPCryptographicContext(MIKEYState const& mikeyState)
+#ifndef NO_OPENSSL
+  : fMIKEYState(mikeyState),
+    fHaveReceivedSRTPPackets(False), fSRTCPIndex(0) {
+  // Begin by doing a key derivation, to generate the keying data that we need:
+  performKeyDerivation();
+#else
+  {
+#endif
+}
+
+SRTPCryptographicContext::~SRTPCryptographicContext() {
+}
+
+Boolean SRTPCryptographicContext
+::processIncomingSRTPPacket(u_int8_t* buffer, unsigned inPacketSize,
+			    unsigned& outPacketSize) {
+#ifndef NO_OPENSSL
+  do {
+    if (inPacketSize < 12) { // For SRTP, 12 is the minimum packet size (if unauthenticated)
+#ifdef DEBUG
+      fprintf(stderr, "SRTPCryptographicContext::processIncomingSRTPPacket(): Error: Packet size %d is too short for SRTP!\n", inPacketSize);
+#endif
+      break;
+    }
+
+    unsigned const numBytesPastEncryption
+      = SRTP_MKI_LENGTH + (weAuthenticate() ? SRTP_AUTH_TAG_LENGTH : 0);
+    if (inPacketSize <= numBytesPastEncryption) {
+#ifdef DEBUG
+      fprintf(stderr, "SRTPCryptographicContext::processIncomingSRTPPacket(): Error: Packet size %d is too short for encrpytion and/or authentication!\n", inPacketSize);
+#endif
+      break;
+    }
+
+    // Begin by figuring out this packet's 'index' (ROC and RTP sequence number),
+    // and the ROC and RTP sequence number that will be used subsequently, provided that
+    // this packet authenticates OK:
+    u_int16_t const rtpSeqNum = (buffer[2]<<8)|buffer[3];
+    u_int32_t nextROC, thisPacketsROC;
+    u_int16_t nextHighRTPSeqNum;
+
+    if (!fHaveReceivedSRTPPackets) {
+      // First time:
+      nextROC = thisPacketsROC = fROC = 0;
+      nextHighRTPSeqNum = rtpSeqNum;
+    } else {
+      // Check whether the sequence number has rolled over, or is out-of-order:
+      u_int16_t const SEQ_NUM_THRESHOLD = 0x1000;
+      if (rtpSeqNum >= fPreviousHighRTPSeqNum) {
+	// normal case, or out-of-order packet that crosses a rollover:
+	if (rtpSeqNum - fPreviousHighRTPSeqNum < SEQ_NUM_THRESHOLD) {
+	  // normal case:
+	  nextROC = thisPacketsROC = fROC;
+	  nextHighRTPSeqNum = rtpSeqNum;
+	} else {
+	  // out-of-order packet that crosses rollover:
+	  nextROC = fROC;
+	  thisPacketsROC = fROC-1;
+	  nextHighRTPSeqNum = fPreviousHighRTPSeqNum;
+	}
+      } else {
+	// rollover, or out-of-order packet that crosses a rollover:
+	if (fPreviousHighRTPSeqNum - rtpSeqNum > SEQ_NUM_THRESHOLD) {
+	  // rollover:
+	  nextROC = thisPacketsROC = fROC+1;
+	  nextHighRTPSeqNum = rtpSeqNum;
+	} else {
+	  // out-of-order packet (that doesn't cross a rollover):
+	  nextROC = thisPacketsROC = fROC;
+	  nextHighRTPSeqNum = fPreviousHighRTPSeqNum;
+	}
+      }
+    }
+      
+    if (weAuthenticate()) {
+      // Authenticate the packet.
+      unsigned const numBytesToAuthenticate
+	= inPacketSize - (SRTP_MKI_LENGTH + SRTP_AUTH_TAG_LENGTH); // ASSERT: > 0
+      u_int8_t const* authenticationTag = &buffer[inPacketSize - SRTP_AUTH_TAG_LENGTH];
+
+      if (!verifySRTPAuthenticationTag(buffer, numBytesToAuthenticate, thisPacketsROC, authenticationTag)) {
+#ifdef DEBUG
+	fprintf(stderr, "SRTPCryptographicContext::processIncomingSRTPPacket(): Failed to authenticate incoming SRTP packet!\n");
+#endif
+	break;
+      }
+    }
+
+    // Now that we've verified the packet, set the 'index values' for next time:
+    fROC = nextROC;
+    fPreviousHighRTPSeqNum = nextHighRTPSeqNum;
+    fHaveReceivedSRTPPackets = True;
+
+    if (weEncryptSRTP()) {
+      // Decrypt the SRTP packet.  It has the index "thisPacketsROC" with "rtpSeqNum":
+      u_int64_t index = (thisPacketsROC<<16)|rtpSeqNum;
+
+      // Figure out the RTP header size.  This will tell us which bytes to decrypt:
+      unsigned rtpHeaderSize = 12; // at least the basic 12-byte header
+      rtpHeaderSize += (buffer[0]&0x0F)*4; // # CSRC identifiers
+      if ((buffer[0]&0x10) != 0) {
+	// There's a RTP extension header.  Add its size:
+	if (inPacketSize < rtpHeaderSize + 4) {
+#ifdef DEBUG
+	  fprintf(stderr, "SRTPCryptographicContext::processIncomingSRTPPacket(): Error: Packet size %d is shorter than the minimum specified RTP header size %d!\n", inPacketSize, rtpHeaderSize + 4);
+#endif
+	  break;
+	}
+	u_int16_t hdrExtLength = (buffer[rtpHeaderSize+2]<<8)|buffer[rtpHeaderSize+3];
+	rtpHeaderSize += 4 + hdrExtLength*4;
+      }
+
+      unsigned const offsetToEncryptedBytes = rtpHeaderSize;
+      unsigned numEncryptedBytes = inPacketSize - numBytesPastEncryption; // ASSERT: > 0
+      if (offsetToEncryptedBytes > numEncryptedBytes) {
+#ifdef DEBUG
+	fprintf(stderr, "SRTPCryptographicContext::processIncomingSRTPPacket(): Error: RTP header size %d (expected <= %d) is too large!\n", rtpHeaderSize, numEncryptedBytes);
+#endif
+	break;
+      }
+      numEncryptedBytes -= offsetToEncryptedBytes;
+	
+      u_int32_t const SSRC = (buffer[8]<<24)|(buffer[9]<<16)|(buffer[10]<<8)|buffer[11];
+      decryptSRTPPacket(index, SSRC, &buffer[offsetToEncryptedBytes], numEncryptedBytes);
+      outPacketSize = inPacketSize - numBytesPastEncryption; // trim to what we use
+    }
+
+    return True;
+  } while (0);
+#endif
+
+  // An error occurred in the handling of the packet:
+  return False;
+}
+
+Boolean SRTPCryptographicContext
+::processIncomingSRTCPPacket(u_int8_t* buffer, unsigned inPacketSize,
+			     unsigned& outPacketSize) {
+#ifndef NO_OPENSSL
+  do {
+    if (inPacketSize < 12) {
+      // For SRTCP, 8 is the minumum RTCP packet size, but there's also a mandatory
+      //   4-byte "E+SRTCP index" word.
+#ifdef DEBUG
+      fprintf(stderr, "SRTPCryptographicContext::processIncomingSRTCPPacket(): Error: Packet size %d is too short for SRTCP!\n", inPacketSize);
+#endif
+      break;
+    }
+
+    unsigned const numBytesPastEncryption
+      = 4/*E+SRTCP index*/ + SRTP_MKI_LENGTH + (weAuthenticate() ? SRTP_AUTH_TAG_LENGTH : 0);
+    if (inPacketSize <= numBytesPastEncryption) {
+#ifdef DEBUG
+      fprintf(stderr, "SRTPCryptographicContext::processIncomingSRTCPPacket(): Error: Packet size %d is too short for encrpytion and/or authentication!\n", inPacketSize);
+#endif
+      break;
+    }
+
+    if (weAuthenticate()) {
+      // Authenticate the packet.
+      unsigned const numBytesToAuthenticate
+	= inPacketSize - (SRTP_MKI_LENGTH + SRTP_AUTH_TAG_LENGTH); // ASSERT: > 0
+      u_int8_t const* authenticationTag = &buffer[inPacketSize - SRTP_AUTH_TAG_LENGTH];
+
+      if (!verifySRTCPAuthenticationTag(buffer, numBytesToAuthenticate, authenticationTag)) {
+#ifdef DEBUG
+	fprintf(stderr, "SRTPCryptographicContext::processIncomingSRTCPPacket(): Failed to authenticate incoming SRTCP packet!\n");
+#endif
+	break;
+      }
+    }
+
+    if (weEncryptSRTCP()) {
+      // Decrypt the SRTCP packet:
+      unsigned numEncryptedBytes = inPacketSize - numBytesPastEncryption; // ASSERT: > 0
+      u_int8_t const* p = &buffer[numEncryptedBytes]; // E + SRTCP index
+      u_int32_t E_plus_SRTCPIndex = (p[0]<<24)|(p[1]<<16)|(p[2]<<8)|p[3];
+      if ((E_plus_SRTCPIndex&0x80000000) != 0) {
+	// The packet is encrypted
+	unsigned const offsetToEncryptedBytes = 8;
+	if (offsetToEncryptedBytes > numEncryptedBytes) {
+#ifdef DEBUG
+	  fprintf(stderr, "SRTPCryptographicContext::processIncomingSRTCPPacket(): Error: RTCP packet size %d is too small!\n", numEncryptedBytes);
+#endif
+	  break;
+	}
+	numEncryptedBytes -= offsetToEncryptedBytes;
+	
+	u_int32_t index = E_plus_SRTCPIndex&0x7FFFFFFF;
+	u_int32_t const SSRC = (buffer[4]<<24)|(buffer[5]<<16)|(buffer[6]<<8)|buffer[7];
+	decryptSRTCPPacket(index, SSRC, &buffer[offsetToEncryptedBytes], numEncryptedBytes);
+      }
+      outPacketSize = inPacketSize - numBytesPastEncryption; // trim to what we use
+    }
+
+    return True;
+  } while (0);
+#endif
+
+  // An error occurred in the handling of the packet:
+  return False;
+}
+
+Boolean SRTPCryptographicContext
+::processOutgoingSRTCPPacket(u_int8_t* buffer, unsigned inPacketSize,
+			     unsigned& outPacketSize) {
+#ifndef NO_OPENSSL
+  do {
+    // Encrypt the appropriate part of the packet.
+    u_int8_t eFlag = 0x00;
+    if (weEncryptSRTCP()) {
+      unsigned const unencryptedHeaderSize = 8;
+      if (inPacketSize < unencryptedHeaderSize) { // packet is too small
+	// Hack: Let small, non RTCP packets through w/o encryption; they may be used to
+	// punch through NATs
+	outPacketSize = inPacketSize;
+	return True;
+      }
+      unsigned const encryptedDataSize = inPacketSize - unencryptedHeaderSize;
+
+      u_int8_t* const dataToEncrypt = &buffer[unencryptedHeaderSize];
+      u_int32_t const ssrc = (buffer[4]<<24)|(buffer[5]<<16)|(buffer[6]<<8)|buffer[7];
+      encryptSRTCPPacket(fSRTCPIndex, ssrc, dataToEncrypt, encryptedDataSize);
+      eFlag = 0x80;
+    }
+
+    outPacketSize = inPacketSize; // initially
+
+    // Add 4 bytes for the 'E' flag and SRTCP index:
+    buffer[outPacketSize++] = (fSRTCPIndex>>24)|eFlag;
+    buffer[outPacketSize++] = fSRTCPIndex>>16;
+    buffer[outPacketSize++] = fSRTCPIndex>>8;
+    buffer[outPacketSize++] = fSRTCPIndex;
+    ++fSRTCPIndex; // for next time
+
+    // Add the MKI:
+    buffer[outPacketSize++] = MKI()>>24;
+    buffer[outPacketSize++] = MKI()>>16;
+    buffer[outPacketSize++] = MKI()>>8;
+    buffer[outPacketSize++] = MKI();
+
+    // Generate and add an authentication tag over the data built so far (except the MKI)
+    outPacketSize += generateSRTCPAuthenticationTag(buffer, outPacketSize-SRTP_MKI_LENGTH,
+						    &buffer[outPacketSize]);
+
+    return True;
+  } while (0);
+#endif
+  
+  // An error occurred:
+  return False;
+}
+
+#ifndef NO_OPENSSL
+unsigned SRTPCryptographicContext
+::generateSRTCPAuthenticationTag(u_int8_t const* dataToAuthenticate, unsigned numBytesToAuthenticate,
+				 u_int8_t* resultAuthenticationTag) {
+  return generateAuthenticationTag(fDerivedKeys.srtcp, dataToAuthenticate, numBytesToAuthenticate,
+				   resultAuthenticationTag);
+}
+
+Boolean SRTPCryptographicContext
+::verifySRTPAuthenticationTag(u_int8_t* dataToAuthenticate, unsigned numBytesToAuthenticate,
+			      u_int32_t roc, u_int8_t const* authenticationTag) {
+  // Append the (4-byte) 'ROC' (roll-over counter) to "dataToAuthenticate" before computing
+  // the authentication tag.  We can do this because we have enough space after
+  // "dataToAuthenticate":
+  //   - If we're encrypted, then there's assumed to be a (4-byte) MKI there.  Just overwrite
+  //     that.  (If we need the MKI, we could copy it beforehand; later, allow for there being
+  //     no MKI #####)
+  //   - If we're not encrypted, then the ROC will overwrite part of the existing
+  //     authentication tag, so we need to make a copy of this.
+  u_int8_t const* existingAuthenticationTag;
+  Boolean haveMKI = True; // later, allow for there being no MKI #####
+  u_int8_t authenticationTagCopy[SRTP_AUTH_TAG_LENGTH];
+
+  if (fMIKEYState.encryptSRTP() && haveMKI) {
+    existingAuthenticationTag = authenticationTag;
+  } else {
+    memcpy(authenticationTagCopy, authenticationTag, sizeof authenticationTagCopy);
+    existingAuthenticationTag = authenticationTagCopy;
+  }
+
+  dataToAuthenticate[numBytesToAuthenticate++] = roc>>24;
+  dataToAuthenticate[numBytesToAuthenticate++] = roc>>16;
+  dataToAuthenticate[numBytesToAuthenticate++] = roc>>8;
+  dataToAuthenticate[numBytesToAuthenticate++] = roc;
+
+  return verifyAuthenticationTag(fDerivedKeys.srtp,
+				 dataToAuthenticate, numBytesToAuthenticate,
+				 existingAuthenticationTag);
+}
+
+Boolean SRTPCryptographicContext
+::verifySRTCPAuthenticationTag(u_int8_t const* dataToAuthenticate, unsigned numBytesToAuthenticate,
+			       u_int8_t const* authenticationTag) {
+return verifyAuthenticationTag(fDerivedKeys.srtcp,
+			       dataToAuthenticate, numBytesToAuthenticate,
+			       authenticationTag);
+}
+
+void SRTPCryptographicContext
+::decryptSRTPPacket(u_int64_t index, u_int32_t ssrc, u_int8_t* data, unsigned numDataBytes) {
+  cryptData(fDerivedKeys.srtp, index, ssrc, data, numDataBytes);
+}
+
+void SRTPCryptographicContext
+::decryptSRTCPPacket(u_int32_t index, u_int32_t ssrc, u_int8_t* data, unsigned numDataBytes) {
+  cryptData(fDerivedKeys.srtcp, (u_int64_t)index, ssrc, data, numDataBytes);
+}
+
+void SRTPCryptographicContext
+::encryptSRTCPPacket(u_int32_t index, u_int32_t ssrc, u_int8_t* data, unsigned numDataBytes) {
+  cryptData(fDerivedKeys.srtcp, (u_int64_t)index, ssrc, data, numDataBytes);
+}
+
+unsigned SRTPCryptographicContext
+::generateAuthenticationTag(derivedKeys& keysToUse,
+			    u_int8_t const* dataToAuthenticate, unsigned numBytesToAuthenticate,
+			    u_int8_t* resultAuthenticationTag) {
+  if (SRTP_AUTH_TAG_LENGTH > SHA1_DIGEST_LEN) return 0; // sanity check; shouldn't happen
+  u_int8_t computedAuthTag[SHA1_DIGEST_LEN];
+  HMAC_SHA1(keysToUse.authKey, sizeof keysToUse.authKey,
+	    dataToAuthenticate, numBytesToAuthenticate,
+	    computedAuthTag);
+
+  for (unsigned i = 0; i < SRTP_AUTH_TAG_LENGTH; ++i) {
+    resultAuthenticationTag[i] = computedAuthTag[i];
+  }
+
+  return SRTP_AUTH_TAG_LENGTH;
+}
+
+Boolean SRTPCryptographicContext
+::verifyAuthenticationTag(derivedKeys& keysToUse,
+			  u_int8_t const* dataToAuthenticate, unsigned numBytesToAuthenticate,
+			  u_int8_t const* authenticationTag) {
+  u_int8_t computedAuthTag[SHA1_DIGEST_LEN];
+  HMAC_SHA1(keysToUse.authKey, sizeof keysToUse.authKey,
+	    dataToAuthenticate, numBytesToAuthenticate,
+	    computedAuthTag);
+
+  if (SRTP_AUTH_TAG_LENGTH > SHA1_DIGEST_LEN) return False; // sanity check
+  for (unsigned i = 0; i < SRTP_AUTH_TAG_LENGTH; ++i) {
+    if (computedAuthTag[i] != authenticationTag[i]) return False;
+  }
+  return True;
+}
+
+ void SRTPCryptographicContext::cryptData(derivedKeys& keys, u_int64_t index, u_int32_t ssrc,
+					 u_int8_t* data, unsigned numDataBytes) {
+  // Begin by constructing the IV: (salt * 2^16) XOR (ssrc * 2^64) XOR (index * 2^16)
+  u_int8_t iv[SRTP_CIPHER_KEY_LENGTH];
+
+  memmove(iv, keys.salt, SRTP_CIPHER_SALT_LENGTH);
+  iv[SRTP_CIPHER_SALT_LENGTH] = iv[SRTP_CIPHER_SALT_LENGTH + 1] = 0;
+  // (This is based upon the fact that SRTP_CIPHER_KEY_LENGTH == SRTP_CIPHER_SALT_LENGTH + 2)
+
+  iv[sizeof iv-12] ^= ssrc>>24; iv[sizeof iv-11] ^= ssrc>>16; iv[sizeof iv-10] ^= ssrc>>8; iv[sizeof iv-9] ^= ssrc;
+
+  iv[sizeof iv-8] ^= index>>40; iv[sizeof iv-7] ^= index>>32; iv[sizeof iv-6] ^= index>>24; iv[sizeof iv-5] ^= index>>16; iv[sizeof iv-4] ^= index>>8; iv[sizeof iv-3] ^= index;
+
+  // Now generate as many blocks of the keystream as we need, by repeatedly encrypting
+  // the IV using our cipher key.  (After each step, we increment the IV by 1.)
+  // We then XOR the keystream into the provided data, to do the en/decryption.
+  AES_KEY key;
+  AES_set_encrypt_key(keys.cipherKey, 8*SRTP_CIPHER_KEY_LENGTH, &key);
+
+  while (numDataBytes > 0) {
+    u_int8_t keyStream[SRTP_CIPHER_KEY_LENGTH];
+    AES_encrypt(iv, keyStream, &key);
+
+    unsigned numBytesToUse
+      = numDataBytes < SRTP_CIPHER_KEY_LENGTH ? numDataBytes : SRTP_CIPHER_KEY_LENGTH;
+    for (unsigned i = 0; i < numBytesToUse; ++i) data[i] ^= keyStream[i];
+    data += numBytesToUse;
+    numDataBytes -= numBytesToUse;
+
+    // Increment the IV by 1:
+    u_int8_t* ptr = &iv[sizeof iv];
+    do {
+      --ptr;
+      ++*ptr;
+    } while (*ptr == 0x00);
+  }
+}
+
+void SRTPCryptographicContext::performKeyDerivation() {
+  // Perform a key derivation for the master key+salt, as defined
+  // by RFC 3711, section 4.3:
+  deriveKeysFromMaster(masterKey(), masterSalt(), fDerivedKeys);
+}
+
+#define deriveKey(label, resultKey) deriveSingleKey(masterKey, salt, label, sizeof resultKey, resultKey)
+
+void SRTPCryptographicContext
+::deriveKeysFromMaster(u_int8_t const* masterKey, u_int8_t const* salt,
+		       allDerivedKeys& allKeysResult) {
+  // Derive cipher, salt, and auth keys for both SRTP and SRTCP:
+  deriveKey(label_srtp_encryption, allKeysResult.srtp.cipherKey);
+  deriveKey(label_srtp_msg_auth, allKeysResult.srtp.authKey);
+  deriveKey(label_srtp_salt, allKeysResult.srtp.salt);
+
+  deriveKey(label_srtcp_encryption, allKeysResult.srtcp.cipherKey);
+  deriveKey(label_srtcp_msg_auth, allKeysResult.srtcp.authKey);
+  deriveKey(label_srtcp_salt, allKeysResult.srtcp.salt);
+}
+
+#define KDF_PRF_CIPHER_BLOCK_LENGTH 16
+
+void SRTPCryptographicContext
+::deriveSingleKey(u_int8_t const* masterKey, u_int8_t const* salt,
+		  SRTPKeyDerivationLabel label,
+		  unsigned resultKeyLength, u_int8_t* resultKey) {
+  // This looks a little different from the mechanism described in RFC 3711, section 4.3, but
+  // it's what the 'libsrtp' code does, so I hope it's functionally equivalent:
+  AES_KEY key;
+  AES_set_encrypt_key(masterKey, 8*SRTP_CIPHER_KEY_LENGTH, &key);
+
+  u_int8_t counter[KDF_PRF_CIPHER_BLOCK_LENGTH];
+  // Set the first bytes of "counter" to be the 'salt'; set the remainder to zero:
+  memmove(counter, salt, SRTP_CIPHER_SALT_LENGTH);
+  for (unsigned i = SRTP_CIPHER_SALT_LENGTH; i < sizeof counter; ++i) {
+    counter[i] = 0;
+  }
+
+  // XOR "label" into byte 7 of "counter":
+  counter[7] ^= label;
+
+  // And use the resulting "counter" as the plaintext:
+  u_int8_t const* plaintext = counter;
+
+  unsigned numBytesRemaining = resultKeyLength;
+  while (numBytesRemaining > 0) {
+    u_int8_t ciphertext[KDF_PRF_CIPHER_BLOCK_LENGTH];
+    AES_encrypt(plaintext, ciphertext, &key);
+
+    unsigned numBytesToCopy
+      = numBytesRemaining < KDF_PRF_CIPHER_BLOCK_LENGTH ? numBytesRemaining : KDF_PRF_CIPHER_BLOCK_LENGTH;
+    memmove(resultKey, ciphertext, numBytesToCopy);
+    resultKey += numBytesToCopy;
+    numBytesRemaining -= numBytesToCopy;
+    ++counter[15]; // for next time
+  }
+}
+#endif
diff --git a/liveMedia/ServerMediaSession.cpp b/liveMedia/ServerMediaSession.cpp
new file mode 100644
index 0000000..043d974
--- /dev/null
+++ b/liveMedia/ServerMediaSession.cpp
@@ -0,0 +1,456 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A data structure that represents a session that consists of
+// potentially multiple (audio and/or video) sub-sessions
+// (This data structure is used for media *streamers* - i.e., servers.
+//  For media receivers, use "MediaSession" instead.)
+// Implementation
+
+#include "ServerMediaSession.hh"
+#include <GroupsockHelper.hh>
+#include <math.h>
+#if defined(__WIN32__) || defined(_WIN32) || defined(_QNX4)
+#define snprintf _snprintf
+#endif
+
+////////// ServerMediaSession //////////
+
+ServerMediaSession* ServerMediaSession
+::createNew(UsageEnvironment& env,
+	    char const* streamName, char const* info,
+	    char const* description, Boolean isSSM, char const* miscSDPLines) {
+  return new ServerMediaSession(env, streamName, info, description,
+				isSSM, miscSDPLines);
+}
+
+Boolean ServerMediaSession
+::lookupByName(UsageEnvironment& env, char const* mediumName,
+	       ServerMediaSession*& resultSession) {
+  resultSession = NULL; // unless we succeed
+
+  Medium* medium;
+  if (!Medium::lookupByName(env, mediumName, medium)) return False;
+
+  if (!medium->isServerMediaSession()) {
+    env.setResultMsg(mediumName, " is not a 'ServerMediaSession' object");
+    return False;
+  }
+
+  resultSession = (ServerMediaSession*)medium;
+  return True;
+}
+
+static char const* const libNameStr = "LIVE555 Streaming Media v";
+char const* const libVersionStr = LIVEMEDIA_LIBRARY_VERSION_STRING;
+
+ServerMediaSession::ServerMediaSession(UsageEnvironment& env,
+				       char const* streamName,
+				       char const* info,
+				       char const* description,
+				       Boolean isSSM, char const* miscSDPLines)
+  : Medium(env), fIsSSM(isSSM), fSubsessionsHead(NULL),
+    fSubsessionsTail(NULL), fSubsessionCounter(0),
+    fReferenceCount(0), fDeleteWhenUnreferenced(False) {
+  fStreamName = strDup(streamName == NULL ? "" : streamName);
+
+  char* libNamePlusVersionStr = NULL; // by default
+  if (info == NULL || description == NULL) {
+    libNamePlusVersionStr = new char[strlen(libNameStr) + strlen(libVersionStr) + 1];
+    sprintf(libNamePlusVersionStr, "%s%s", libNameStr, libVersionStr);
+  }
+  fInfoSDPString = strDup(info == NULL ? libNamePlusVersionStr : info);
+  fDescriptionSDPString = strDup(description == NULL ? libNamePlusVersionStr : description);
+  delete[] libNamePlusVersionStr;
+
+  fMiscSDPLines = strDup(miscSDPLines == NULL ? "" : miscSDPLines);
+
+  gettimeofday(&fCreationTime, NULL);
+}
+
+ServerMediaSession::~ServerMediaSession() {
+  deleteAllSubsessions();
+  delete[] fStreamName;
+  delete[] fInfoSDPString;
+  delete[] fDescriptionSDPString;
+  delete[] fMiscSDPLines;
+}
+
+Boolean
+ServerMediaSession::addSubsession(ServerMediaSubsession* subsession) {
+  if (subsession->fParentSession != NULL) return False; // it's already used
+
+  if (fSubsessionsTail == NULL) {
+    fSubsessionsHead = subsession;
+  } else {
+    fSubsessionsTail->fNext = subsession;
+  }
+  fSubsessionsTail = subsession;
+
+  subsession->fParentSession = this;
+  subsession->fTrackNumber = ++fSubsessionCounter;
+  return True;
+}
+
+void ServerMediaSession::testScaleFactor(float& scale) {
+  // First, try setting all subsessions to the desired scale.
+  // If the subsessions' actual scales differ from each other, choose the
+  // value that's closest to 1, and then try re-setting all subsessions to that
+  // value.  If the subsessions' actual scales still differ, re-set them all to 1.
+  float minSSScale = 1.0;
+  float maxSSScale = 1.0;
+  float bestSSScale = 1.0;
+  float bestDistanceTo1 = 0.0;
+  ServerMediaSubsession* subsession;
+  for (subsession = fSubsessionsHead; subsession != NULL;
+       subsession = subsession->fNext) {
+    float ssscale = scale;
+    subsession->testScaleFactor(ssscale);
+    if (subsession == fSubsessionsHead) { // this is the first subsession
+      minSSScale = maxSSScale = bestSSScale = ssscale;
+      bestDistanceTo1 = (float)fabs(ssscale - 1.0f);
+    } else {
+      if (ssscale < minSSScale) {
+	minSSScale = ssscale;
+      } else if (ssscale > maxSSScale) {
+	maxSSScale = ssscale;
+      }
+
+      float distanceTo1 = (float)fabs(ssscale - 1.0f);
+      if (distanceTo1 < bestDistanceTo1) {
+	bestSSScale = ssscale;
+	bestDistanceTo1 = distanceTo1;
+      }
+    }
+  }
+  if (minSSScale == maxSSScale) {
+    // All subsessions are at the same scale: minSSScale == bestSSScale == maxSSScale
+    scale = minSSScale;
+    return;
+  }
+
+  // The scales for each subsession differ.  Try to set each one to the value
+  // that's closest to 1:
+  for (subsession = fSubsessionsHead; subsession != NULL;
+       subsession = subsession->fNext) {
+    float ssscale = bestSSScale;
+    subsession->testScaleFactor(ssscale);
+    if (ssscale != bestSSScale) break; // no luck
+  }
+  if (subsession == NULL) {
+    // All subsessions are at the same scale: bestSSScale
+    scale = bestSSScale;
+    return;
+  }
+
+  // Still no luck.  Set each subsession's scale to 1:
+  for (subsession = fSubsessionsHead; subsession != NULL;
+       subsession = subsession->fNext) {
+    float ssscale = 1;
+    subsession->testScaleFactor(ssscale);
+  }
+  scale = 1;
+}
+
+float ServerMediaSession::duration() const {
+  float minSubsessionDuration = 0.0;
+  float maxSubsessionDuration = 0.0;
+  for (ServerMediaSubsession* subsession = fSubsessionsHead; subsession != NULL;
+       subsession = subsession->fNext) {
+    // Hack: If any subsession supports seeking by 'absolute' time, then return a negative value, to indicate that only subsessions
+    // will have a "a=range:" attribute:
+    char* absStartTime = NULL; char* absEndTime = NULL;
+    subsession->getAbsoluteTimeRange(absStartTime, absEndTime);
+    if (absStartTime != NULL) return -1.0f;
+
+    float ssduration = subsession->duration();
+    if (subsession == fSubsessionsHead) { // this is the first subsession
+      minSubsessionDuration = maxSubsessionDuration = ssduration;
+    } else if (ssduration < minSubsessionDuration) {
+	minSubsessionDuration = ssduration;
+    } else if (ssduration > maxSubsessionDuration) {
+	maxSubsessionDuration = ssduration;
+    }
+  }
+
+  if (maxSubsessionDuration != minSubsessionDuration) {
+    return -maxSubsessionDuration; // because subsession durations differ
+  } else {
+    return maxSubsessionDuration; // all subsession durations are the same
+  }
+}
+
+void ServerMediaSession::noteLiveness() {
+  // default implementation: do nothing
+}
+
+void ServerMediaSession::deleteAllSubsessions() {
+  Medium::close(fSubsessionsHead);
+  fSubsessionsHead = fSubsessionsTail = NULL;
+  fSubsessionCounter = 0;
+}
+
+Boolean ServerMediaSession::isServerMediaSession() const {
+  return True;
+}
+
+char* ServerMediaSession::generateSDPDescription() {
+  AddressString ipAddressStr(ourIPAddress(envir()));
+  unsigned ipAddressStrSize = strlen(ipAddressStr.val());
+
+  // For a SSM sessions, we need a "a=source-filter: incl ..." line also:
+  char* sourceFilterLine;
+  if (fIsSSM) {
+    char const* const sourceFilterFmt =
+      "a=source-filter: incl IN IP4 * %s\r\n"
+      "a=rtcp-unicast: reflection\r\n";
+    unsigned const sourceFilterFmtSize = strlen(sourceFilterFmt) + ipAddressStrSize + 1;
+
+    sourceFilterLine = new char[sourceFilterFmtSize];
+    sprintf(sourceFilterLine, sourceFilterFmt, ipAddressStr.val());
+  } else {
+    sourceFilterLine = strDup("");
+  }
+
+  char* rangeLine = NULL; // for now
+  char* sdp = NULL; // for now
+
+  do {
+    // Count the lengths of each subsession's media-level SDP lines.
+    // (We do this first, because the call to "subsession->sdpLines()"
+    // causes correct subsession 'duration()'s to be calculated later.)
+    unsigned sdpLength = 0;
+    ServerMediaSubsession* subsession;
+    for (subsession = fSubsessionsHead; subsession != NULL;
+	 subsession = subsession->fNext) {
+      char const* sdpLines = subsession->sdpLines();
+      if (sdpLines == NULL) continue; // the media's not available
+      sdpLength += strlen(sdpLines);
+    }
+    if (sdpLength == 0) break; // the session has no usable subsessions
+
+    // Unless subsessions have differing durations, we also have a "a=range:" line:
+    float dur = duration();
+    if (dur == 0.0) {
+      rangeLine = strDup("a=range:npt=0-\r\n");
+    } else if (dur > 0.0) {
+      char buf[100];
+      sprintf(buf, "a=range:npt=0-%.3f\r\n", dur);
+      rangeLine = strDup(buf);
+    } else { // subsessions have differing durations, so "a=range:" lines go there
+      rangeLine = strDup("");
+    }
+
+    char const* const sdpPrefixFmt =
+      "v=0\r\n"
+      "o=- %ld%06ld %d IN IP4 %s\r\n"
+      "s=%s\r\n"
+      "i=%s\r\n"
+      "t=0 0\r\n"
+      "a=tool:%s%s\r\n"
+      "a=type:broadcast\r\n"
+      "a=control:*\r\n"
+      "%s"
+      "%s"
+      "a=x-qt-text-nam:%s\r\n"
+      "a=x-qt-text-inf:%s\r\n"
+      "%s";
+    sdpLength += strlen(sdpPrefixFmt)
+      + 20 + 6 + 20 + ipAddressStrSize
+      + strlen(fDescriptionSDPString)
+      + strlen(fInfoSDPString)
+      + strlen(libNameStr) + strlen(libVersionStr)
+      + strlen(sourceFilterLine)
+      + strlen(rangeLine)
+      + strlen(fDescriptionSDPString)
+      + strlen(fInfoSDPString)
+      + strlen(fMiscSDPLines);
+    sdpLength += 1000; // in case the length of the "subsession->sdpLines()" calls below change
+    sdp = new char[sdpLength];
+    if (sdp == NULL) break;
+
+    // Generate the SDP prefix (session-level lines):
+    snprintf(sdp, sdpLength, sdpPrefixFmt,
+	     fCreationTime.tv_sec, fCreationTime.tv_usec, // o= <session id>
+	     1, // o= <version> // (needs to change if params are modified)
+	     ipAddressStr.val(), // o= <address>
+	     fDescriptionSDPString, // s= <description>
+	     fInfoSDPString, // i= <info>
+	     libNameStr, libVersionStr, // a=tool:
+	     sourceFilterLine, // a=source-filter: incl (if a SSM session)
+	     rangeLine, // a=range: line
+	     fDescriptionSDPString, // a=x-qt-text-nam: line
+	     fInfoSDPString, // a=x-qt-text-inf: line
+	     fMiscSDPLines); // miscellaneous session SDP lines (if any)
+
+    // Then, add the (media-level) lines for each subsession:
+    char* mediaSDP = sdp;
+    for (subsession = fSubsessionsHead; subsession != NULL;
+	 subsession = subsession->fNext) {
+      unsigned mediaSDPLength = strlen(mediaSDP);
+      mediaSDP += mediaSDPLength;
+      sdpLength -= mediaSDPLength;
+      if (sdpLength <= 1) break; // the SDP has somehow become too long
+
+      char const* sdpLines = subsession->sdpLines();
+      if (sdpLines != NULL) snprintf(mediaSDP, sdpLength, "%s", sdpLines);
+    }
+  } while (0);
+
+  delete[] rangeLine; delete[] sourceFilterLine;
+  return sdp;
+}
+
+
+////////// ServerMediaSubsessionIterator //////////
+
+ServerMediaSubsessionIterator
+::ServerMediaSubsessionIterator(ServerMediaSession& session)
+  : fOurSession(session) {
+  reset();
+}
+
+ServerMediaSubsessionIterator::~ServerMediaSubsessionIterator() {
+}
+
+ServerMediaSubsession* ServerMediaSubsessionIterator::next() {
+  ServerMediaSubsession* result = fNextPtr;
+
+  if (fNextPtr != NULL) fNextPtr = fNextPtr->fNext;
+
+  return result;
+}
+
+void ServerMediaSubsessionIterator::reset() {
+  fNextPtr = fOurSession.fSubsessionsHead;
+}
+
+
+////////// ServerMediaSubsession //////////
+
+ServerMediaSubsession::ServerMediaSubsession(UsageEnvironment& env)
+  : Medium(env),
+    fParentSession(NULL), fServerAddressForSDP(0), fPortNumForSDP(0),
+    fNext(NULL), fTrackNumber(0), fTrackId(NULL) {
+}
+
+ServerMediaSubsession::~ServerMediaSubsession() {
+  delete[] (char*)fTrackId;
+  Medium::close(fNext);
+}
+
+char const* ServerMediaSubsession::trackId() {
+  if (fTrackNumber == 0) return NULL; // not yet in a ServerMediaSession
+
+  if (fTrackId == NULL) {
+    char buf[100];
+    sprintf(buf, "track%d", fTrackNumber);
+    fTrackId = strDup(buf);
+  }
+  return fTrackId;
+}
+
+void ServerMediaSubsession::pauseStream(unsigned /*clientSessionId*/,
+					void* /*streamToken*/) {
+  // default implementation: do nothing
+}
+void ServerMediaSubsession::seekStream(unsigned /*clientSessionId*/,
+				       void* /*streamToken*/, double& /*seekNPT*/, double /*streamDuration*/, u_int64_t& numBytes) {
+  // default implementation: do nothing
+  numBytes = 0;
+}
+void ServerMediaSubsession::seekStream(unsigned /*clientSessionId*/,
+				       void* /*streamToken*/, char*& absStart, char*& absEnd) {
+  // default implementation: do nothing (but delete[] and assign "absStart" and "absEnd" to NULL, to show that we don't handle this)
+  delete[] absStart; absStart = NULL;
+  delete[] absEnd; absEnd = NULL;
+}
+void ServerMediaSubsession::nullSeekStream(unsigned /*clientSessionId*/, void* /*streamToken*/,
+					   double streamEndTime, u_int64_t& numBytes) {
+  // default implementation: do nothing
+  numBytes = 0;
+}
+void ServerMediaSubsession::setStreamScale(unsigned /*clientSessionId*/,
+					   void* /*streamToken*/, float /*scale*/) {
+  // default implementation: do nothing
+}
+float ServerMediaSubsession::getCurrentNPT(void* /*streamToken*/) {
+  // default implementation: return 0.0
+  return 0.0;
+}
+FramedSource* ServerMediaSubsession::getStreamSource(void* /*streamToken*/) {
+  // default implementation: return NULL
+  return NULL;
+}
+void ServerMediaSubsession::deleteStream(unsigned /*clientSessionId*/,
+					 void*& /*streamToken*/) {
+  // default implementation: do nothing
+}
+
+void ServerMediaSubsession::testScaleFactor(float& scale) {
+  // default implementation: Support scale = 1 only
+  scale = 1;
+}
+
+float ServerMediaSubsession::duration() const {
+  // default implementation: assume an unbounded session:
+  return 0.0;
+}
+
+void ServerMediaSubsession::getAbsoluteTimeRange(char*& absStartTime, char*& absEndTime) const {
+  // default implementation: We don't support seeking by 'absolute' time, so indicate this by setting both parameters to NULL:
+  absStartTime = absEndTime = NULL;
+}
+
+void ServerMediaSubsession::setServerAddressAndPortForSDP(netAddressBits addressBits,
+							  portNumBits portBits) {
+  fServerAddressForSDP = addressBits;
+  fPortNumForSDP = portBits;
+}
+
+char const*
+ServerMediaSubsession::rangeSDPLine() const {
+  // First, check for the special case where we support seeking by 'absolute' time:
+  char* absStart = NULL; char* absEnd = NULL;
+  getAbsoluteTimeRange(absStart, absEnd);
+  if (absStart != NULL) {
+    char buf[100];
+
+    if (absEnd != NULL) {
+      sprintf(buf, "a=range:clock=%s-%s\r\n", absStart, absEnd);
+    } else {
+      sprintf(buf, "a=range:clock=%s-\r\n", absStart);
+    }
+    return strDup(buf);
+  }
+
+  if (fParentSession == NULL) return NULL;
+
+  // If all of our parent's subsessions have the same duration
+  // (as indicated by "fParentSession->duration() >= 0"), there's no "a=range:" line:
+  if (fParentSession->duration() >= 0.0) return strDup("");
+
+  // Use our own duration for a "a=range:" line:
+  float ourDuration = duration();
+  if (ourDuration == 0.0) {
+    return strDup("a=range:npt=0-\r\n");
+  } else {
+    char buf[100];
+    sprintf(buf, "a=range:npt=0-%.3f\r\n", ourDuration);
+    return strDup(buf);
+  }
+}
diff --git a/liveMedia/SimpleRTPSink.cpp b/liveMedia/SimpleRTPSink.cpp
new file mode 100644
index 0000000..2e51af8
--- /dev/null
+++ b/liveMedia/SimpleRTPSink.cpp
@@ -0,0 +1,94 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simple RTP sink that packs frames into each outgoing
+//     packet, without any fragmentation or special headers.
+// Implementation
+
+#include "SimpleRTPSink.hh"
+
+SimpleRTPSink::SimpleRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+			     unsigned char rtpPayloadFormat,
+			     unsigned rtpTimestampFrequency,
+			     char const* sdpMediaTypeString,
+			     char const* rtpPayloadFormatName,
+			     unsigned numChannels,
+			     Boolean allowMultipleFramesPerPacket,
+			     Boolean doNormalMBitRule)
+  : MultiFramedRTPSink(env, RTPgs, rtpPayloadFormat,
+		       rtpTimestampFrequency, rtpPayloadFormatName,
+		       numChannels),
+    fAllowMultipleFramesPerPacket(allowMultipleFramesPerPacket), fSetMBitOnNextPacket(False) {
+  fSDPMediaTypeString
+    = strDup(sdpMediaTypeString == NULL ? "unknown" : sdpMediaTypeString);
+  fSetMBitOnLastFrames = doNormalMBitRule && strcmp(fSDPMediaTypeString, "audio") != 0;
+}
+
+SimpleRTPSink::~SimpleRTPSink() {
+  delete[] (char*)fSDPMediaTypeString;
+}
+
+SimpleRTPSink*
+SimpleRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			 unsigned char rtpPayloadFormat,
+			 unsigned rtpTimestampFrequency,
+			 char const* sdpMediaTypeString,
+			 char const* rtpPayloadFormatName,
+			 unsigned numChannels,
+			 Boolean allowMultipleFramesPerPacket,
+			 Boolean doNormalMBitRule) {
+  return new SimpleRTPSink(env, RTPgs,
+			   rtpPayloadFormat, rtpTimestampFrequency,
+			   sdpMediaTypeString, rtpPayloadFormatName,
+			   numChannels,
+			   allowMultipleFramesPerPacket,
+			   doNormalMBitRule);
+}
+
+void SimpleRTPSink::doSpecialFrameHandling(unsigned fragmentationOffset,
+					   unsigned char* frameStart,
+					   unsigned numBytesInFrame,
+					   struct timeval framePresentationTime,
+					   unsigned numRemainingBytes) {
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit, if appropriate:
+    if (fSetMBitOnLastFrames) setMarkerBit();
+  }
+  if (fSetMBitOnNextPacket) {
+    // An external object has asked for the 'M' bit to be set on the next packet:
+    setMarkerBit();
+    fSetMBitOnNextPacket = False;
+  }
+
+  // Important: Also call our base class's doSpecialFrameHandling(),
+  // to set the packet's timestamp:
+  MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
+					     frameStart, numBytesInFrame,
+					     framePresentationTime,
+					     numRemainingBytes);
+}
+
+Boolean SimpleRTPSink::
+frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+			       unsigned /*numBytesInFrame*/) const {
+  return fAllowMultipleFramesPerPacket;
+}
+
+char const* SimpleRTPSink::sdpMediaType() const {
+  return fSDPMediaTypeString;
+}
diff --git a/liveMedia/SimpleRTPSource.cpp b/liveMedia/SimpleRTPSource.cpp
new file mode 100644
index 0000000..8c98eb8
--- /dev/null
+++ b/liveMedia/SimpleRTPSource.cpp
@@ -0,0 +1,68 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A RTP source for a simple RTP payload format that
+//     - doesn't have any special headers following the RTP header
+//     - doesn't have any special framing apart from the packet data itself
+// Implementation
+
+#include "SimpleRTPSource.hh"
+#include <string.h>
+
+SimpleRTPSource*
+SimpleRTPSource::createNew(UsageEnvironment& env,
+			   Groupsock* RTPgs,
+			   unsigned char rtpPayloadFormat,
+			   unsigned rtpTimestampFrequency,
+			   char const* mimeTypeString,
+			   unsigned offset, Boolean doNormalMBitRule) {
+  return new SimpleRTPSource(env, RTPgs, rtpPayloadFormat,
+			     rtpTimestampFrequency,
+			     mimeTypeString, offset, doNormalMBitRule);
+}
+
+SimpleRTPSource
+::SimpleRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		  unsigned char rtpPayloadFormat,
+		  unsigned rtpTimestampFrequency,
+		  char const* mimeTypeString,
+		  unsigned offset, Boolean doNormalMBitRule)
+  : MultiFramedRTPSource(env, RTPgs,
+			 rtpPayloadFormat, rtpTimestampFrequency),
+    fMIMEtypeString(strDup(mimeTypeString)), fOffset(offset) {
+  fUseMBitForFrameEnd = doNormalMBitRule && strncmp(mimeTypeString, "audio/", 6) != 0;
+}
+
+SimpleRTPSource::~SimpleRTPSource() {
+  delete[] (char*)fMIMEtypeString;
+}
+
+Boolean SimpleRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+		       unsigned& resultSpecialHeaderSize) {
+  fCurrentPacketCompletesFrame
+    = !fUseMBitForFrameEnd || packet->rtpMarkerBit();
+
+  resultSpecialHeaderSize = fOffset;
+  return True;
+}
+
+char const* SimpleRTPSource::MIMEtype() const {
+  if (fMIMEtypeString == NULL) return MultiFramedRTPSource::MIMEtype();
+
+  return fMIMEtypeString;
+}
diff --git a/liveMedia/StreamParser.cpp b/liveMedia/StreamParser.cpp
new file mode 100644
index 0000000..00862e5
--- /dev/null
+++ b/liveMedia/StreamParser.cpp
@@ -0,0 +1,210 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Abstract class for parsing a byte stream
+// Implementation
+
+#include "StreamParser.hh"
+
+#include <string.h>
+#include <stdlib.h>
+
+#define BANK_SIZE 150000
+
+void StreamParser::flushInput() {
+  fCurParserIndex = fSavedParserIndex = 0;
+  fSavedRemainingUnparsedBits = fRemainingUnparsedBits = 0;
+  fTotNumValidBytes = 0;
+}
+
+StreamParser::StreamParser(FramedSource* inputSource,
+			   FramedSource::onCloseFunc* onInputCloseFunc,
+			   void* onInputCloseClientData,
+			   clientContinueFunc* clientContinueFunc,
+			   void* clientContinueClientData)
+  : fInputSource(inputSource), fClientOnInputCloseFunc(onInputCloseFunc),
+    fClientOnInputCloseClientData(onInputCloseClientData),
+    fClientContinueFunc(clientContinueFunc),
+    fClientContinueClientData(clientContinueClientData),
+    fSavedParserIndex(0), fSavedRemainingUnparsedBits(0),
+    fCurParserIndex(0), fRemainingUnparsedBits(0),
+    fTotNumValidBytes(0), fHaveSeenEOF(False) {
+  fBank[0] = new unsigned char[BANK_SIZE];
+  fBank[1] = new unsigned char[BANK_SIZE];
+  fCurBankNum = 0;
+  fCurBank = fBank[fCurBankNum];
+
+  fLastSeenPresentationTime.tv_sec = 0; fLastSeenPresentationTime.tv_usec = 0;
+}
+
+StreamParser::~StreamParser() {
+  delete[] fBank[0]; delete[] fBank[1];
+}
+
+void StreamParser::saveParserState() {
+  fSavedParserIndex = fCurParserIndex;
+  fSavedRemainingUnparsedBits = fRemainingUnparsedBits;
+}
+
+void StreamParser::restoreSavedParserState() {
+  fCurParserIndex = fSavedParserIndex;
+  fRemainingUnparsedBits = fSavedRemainingUnparsedBits;
+}
+
+void StreamParser::skipBits(unsigned numBits) {
+  if (numBits <= fRemainingUnparsedBits) {
+    fRemainingUnparsedBits -= numBits;
+  } else {
+    numBits -= fRemainingUnparsedBits;
+
+    unsigned numBytesToExamine = (numBits+7)/8; // round up
+    ensureValidBytes(numBytesToExamine);
+    fCurParserIndex += numBytesToExamine;
+
+    fRemainingUnparsedBits = 8*numBytesToExamine - numBits;
+  }
+}
+
+unsigned StreamParser::getBits(unsigned numBits) {
+  if (numBits <= fRemainingUnparsedBits) {
+    unsigned char lastByte = *lastParsed();
+    lastByte >>= (fRemainingUnparsedBits - numBits);
+    fRemainingUnparsedBits -= numBits;
+
+    return (unsigned)lastByte &~ ((~0u)<<numBits);
+  } else {
+    unsigned char lastByte;
+    if (fRemainingUnparsedBits > 0) {
+      lastByte = *lastParsed();
+    } else {
+      lastByte = 0;
+    }
+
+    unsigned remainingBits = numBits - fRemainingUnparsedBits; // > 0
+
+    // For simplicity, read the next 4 bytes, even though we might not
+    // need all of them here:
+    unsigned result = test4Bytes();
+
+    result >>= (32 - remainingBits);
+    result |= (lastByte << remainingBits);
+    if (numBits < 32) result &=~ ((~0u)<<numBits);
+
+    unsigned const numRemainingBytes = (remainingBits+7)/8;
+    fCurParserIndex += numRemainingBytes;
+    fRemainingUnparsedBits = 8*numRemainingBytes - remainingBits;
+
+    return result;
+  }
+}
+
+unsigned StreamParser::bankSize() const {
+  return BANK_SIZE;
+}
+
+#define NO_MORE_BUFFERED_INPUT 1
+
+void StreamParser::ensureValidBytes1(unsigned numBytesNeeded) {
+  // We need to read some more bytes from the input source.
+  // First, clarify how much data to ask for:
+  unsigned maxInputFrameSize = fInputSource->maxFrameSize();
+  if (maxInputFrameSize > numBytesNeeded) numBytesNeeded = maxInputFrameSize;
+
+  // First, check whether these new bytes would overflow the current
+  // bank.  If so, start using a new bank now.
+  if (fCurParserIndex + numBytesNeeded > BANK_SIZE) {
+    // Swap banks, but save any still-needed bytes from the old bank:
+    unsigned numBytesToSave = fTotNumValidBytes - fSavedParserIndex;
+    unsigned char const* from = &curBank()[fSavedParserIndex];
+
+    fCurBankNum = (fCurBankNum + 1)%2;
+    fCurBank = fBank[fCurBankNum];
+    memmove(curBank(), from, numBytesToSave);
+    fCurParserIndex = fCurParserIndex - fSavedParserIndex;
+    fSavedParserIndex = 0;
+    fTotNumValidBytes = numBytesToSave;
+  }
+
+  // ASSERT: fCurParserIndex + numBytesNeeded > fTotNumValidBytes
+  //      && fCurParserIndex + numBytesNeeded <= BANK_SIZE
+  if (fCurParserIndex + numBytesNeeded > BANK_SIZE) {
+    // If this happens, it means that we have too much saved parser state.
+    // To fix this, increase BANK_SIZE as appropriate.
+    fInputSource->envir() << "StreamParser internal error ("
+			  << fCurParserIndex << " + "
+			  << numBytesNeeded << " > "
+			  << BANK_SIZE << ")\n";
+    fInputSource->envir().internalError();
+  }
+
+  // Try to read as many new bytes as will fit in the current bank:
+  unsigned maxNumBytesToRead = BANK_SIZE - fTotNumValidBytes;
+  fInputSource->getNextFrame(&curBank()[fTotNumValidBytes],
+			     maxNumBytesToRead,
+			     afterGettingBytes, this,
+			     onInputClosure, this);
+
+  throw NO_MORE_BUFFERED_INPUT;
+}
+
+void StreamParser::afterGettingBytes(void* clientData,
+				     unsigned numBytesRead,
+				     unsigned /*numTruncatedBytes*/,
+				     struct timeval presentationTime,
+				     unsigned /*durationInMicroseconds*/){
+  StreamParser* parser = (StreamParser*)clientData;
+  if (parser != NULL) parser->afterGettingBytes1(numBytesRead, presentationTime);
+}
+
+void StreamParser::afterGettingBytes1(unsigned numBytesRead, struct timeval presentationTime) {
+  // Sanity check: Make sure we didn't get too many bytes for our bank:
+  if (fTotNumValidBytes + numBytesRead > BANK_SIZE) {
+    fInputSource->envir()
+      << "StreamParser::afterGettingBytes() warning: read "
+      << numBytesRead << " bytes; expected no more than "
+      << BANK_SIZE - fTotNumValidBytes << "\n";
+  }
+
+  fLastSeenPresentationTime = presentationTime;
+
+  unsigned char* ptr = &curBank()[fTotNumValidBytes];
+  fTotNumValidBytes += numBytesRead;
+
+  // Continue our original calling source where it left off:
+  restoreSavedParserState();
+      // Sigh... this is a crock; things would have been a lot simpler
+      // here if we were using threads, with synchronous I/O...
+  fClientContinueFunc(fClientContinueClientData, ptr, numBytesRead, presentationTime);
+}
+
+void StreamParser::onInputClosure(void* clientData) {
+  StreamParser* parser = (StreamParser*)clientData;
+  if (parser != NULL) parser->onInputClosure1();
+}
+
+void StreamParser::onInputClosure1() {
+  if (!fHaveSeenEOF) {
+    // We're hitting EOF for the first time.  Set our 'EOF' flag, and continue parsing, as if we'd just read 0 bytes of data.
+    // This allows the parser to re-parse any remaining unparsed data (perhaps while testing for EOF at the end):
+    fHaveSeenEOF = True;
+    afterGettingBytes1(0, fLastSeenPresentationTime);
+  } else {
+    // We're hitting EOF for the second time.  Now, we handle the source input closure:
+    fHaveSeenEOF = False;
+    if (fClientOnInputCloseFunc != NULL) (*fClientOnInputCloseFunc)(fClientOnInputCloseClientData);
+  }
+}
diff --git a/liveMedia/StreamParser.hh b/liveMedia/StreamParser.hh
new file mode 100644
index 0000000..7cdb7dd
--- /dev/null
+++ b/liveMedia/StreamParser.hh
@@ -0,0 +1,167 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Abstract class for parsing a byte stream
+// C++ header
+
+#ifndef _STREAM_PARSER_HH
+#define _STREAM_PARSER_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class StreamParser {
+public:
+  virtual void flushInput();
+
+protected: // we're a virtual base class
+  typedef void (clientContinueFunc)(void* clientData,
+				    unsigned char* ptr, unsigned size,
+				    struct timeval presentationTime);
+  StreamParser(FramedSource* inputSource,
+	       FramedSource::onCloseFunc* onInputCloseFunc,
+	       void* onInputCloseClientData,
+	       clientContinueFunc* clientContinueFunc,
+	       void* clientContinueClientData);
+  virtual ~StreamParser();
+
+  void saveParserState();
+  virtual void restoreSavedParserState();
+
+  u_int32_t get4Bytes() { // byte-aligned; returned in big-endian order
+    u_int32_t result = test4Bytes();
+    fCurParserIndex += 4;
+    fRemainingUnparsedBits = 0;
+
+    return result;
+  }
+  u_int32_t test4Bytes() { // as above, but doesn't advance ptr
+    ensureValidBytes(4);
+
+    unsigned char const* ptr = nextToParse();
+    return (ptr[0]<<24)|(ptr[1]<<16)|(ptr[2]<<8)|ptr[3];
+  }
+
+  u_int16_t get2Bytes() {
+    ensureValidBytes(2);
+
+    unsigned char const* ptr = nextToParse();
+    u_int16_t result = (ptr[0]<<8)|ptr[1];
+
+    fCurParserIndex += 2;
+    fRemainingUnparsedBits = 0;
+
+    return result;
+  }
+  u_int16_t test2Bytes() {
+    ensureValidBytes(2);
+
+    unsigned char const* ptr = nextToParse();
+    return (ptr[0]<<8)|ptr[1];
+  }
+
+
+  u_int8_t get1Byte() { // byte-aligned
+    ensureValidBytes(1);
+    fRemainingUnparsedBits = 0;
+    return curBank()[fCurParserIndex++];
+  }
+  u_int8_t test1Byte() { // as above, but doesn't advance ptr
+    ensureValidBytes(1);
+    return nextToParse()[0];
+  }
+
+  void getBytes(u_int8_t* to, unsigned numBytes) {
+    testBytes(to, numBytes);
+    fCurParserIndex += numBytes;
+    fRemainingUnparsedBits = 0;
+  }
+  void testBytes(u_int8_t* to, unsigned numBytes) { // as above, but doesn't advance ptr
+    ensureValidBytes(numBytes);
+    memmove(to, nextToParse(), numBytes);
+  }
+  void skipBytes(unsigned numBytes) {
+    ensureValidBytes(numBytes);
+    fCurParserIndex += numBytes;
+  }
+
+  void skipBits(unsigned numBits);
+  unsigned getBits(unsigned numBits);
+      // numBits <= 32; returns data into low-order bits of result
+
+  unsigned curOffset() const { return fCurParserIndex; }
+
+  unsigned& totNumValidBytes() { return fTotNumValidBytes; }
+
+  Boolean haveSeenEOF() const { return fHaveSeenEOF; }
+
+  unsigned bankSize() const;
+
+private:
+  unsigned char* curBank() { return fCurBank; }
+  unsigned char* nextToParse() { return &curBank()[fCurParserIndex]; }
+  unsigned char* lastParsed() { return &curBank()[fCurParserIndex-1]; }
+
+  // makes sure that at least "numBytes" valid bytes remain:
+  void ensureValidBytes(unsigned numBytesNeeded) {
+    // common case: inlined:
+    if (fCurParserIndex + numBytesNeeded <= fTotNumValidBytes) return;
+
+    ensureValidBytes1(numBytesNeeded);
+  }
+  void ensureValidBytes1(unsigned numBytesNeeded);
+
+  static void afterGettingBytes(void* clientData, unsigned numBytesRead,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingBytes1(unsigned numBytesRead, struct timeval presentationTime);
+
+  static void onInputClosure(void* clientData);
+  void onInputClosure1();
+
+private:
+  FramedSource* fInputSource; // should be a byte-stream source??
+  FramedSource::onCloseFunc* fClientOnInputCloseFunc;
+  void* fClientOnInputCloseClientData;
+  clientContinueFunc* fClientContinueFunc;
+  void* fClientContinueClientData;
+
+  // Use a pair of 'banks', and swap between them as they fill up:
+  unsigned char* fBank[2];
+  unsigned char fCurBankNum;
+  unsigned char* fCurBank;
+
+  // The most recent 'saved' parse position:
+  unsigned fSavedParserIndex; // <= fCurParserIndex
+  unsigned char fSavedRemainingUnparsedBits;
+
+  // The current position of the parser within the current bank:
+  unsigned fCurParserIndex; // <= fTotNumValidBytes
+  unsigned char fRemainingUnparsedBits; // in previous byte: [0,7]
+
+  // The total number of valid bytes stored in the current bank:
+  unsigned fTotNumValidBytes; // <= BANK_SIZE
+
+  // Whether we have seen EOF on the input source:
+  Boolean fHaveSeenEOF;
+
+  struct timeval fLastSeenPresentationTime; // hack used for EOF handling
+};
+
+#endif
diff --git a/liveMedia/StreamReplicator.cpp b/liveMedia/StreamReplicator.cpp
new file mode 100644
index 0000000..687b654
--- /dev/null
+++ b/liveMedia/StreamReplicator.cpp
@@ -0,0 +1,333 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// An class that can be used to create (possibly multiple) 'replicas' of an incoming stream.
+// Implementation.
+
+#include "StreamReplicator.hh"
+
+////////// Definition of "StreamReplica": The class that implements each stream replica //////////
+
+class StreamReplica: public FramedSource {
+protected:
+  friend class StreamReplicator;
+  StreamReplica(StreamReplicator& ourReplicator); // called only by "StreamReplicator::createStreamReplica()"
+  virtual ~StreamReplica();
+
+private: // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+private:
+  static void copyReceivedFrame(StreamReplica* toReplica, StreamReplica* fromReplica);
+
+private:
+  StreamReplicator& fOurReplicator;
+  int fFrameIndex; // 0 or 1, depending upon which frame we're currently requesting; could also be -1 if we've stopped playing
+
+  // Replicas that are currently awaiting data are kept in a (singly-linked) list:
+  StreamReplica* fNext;
+};
+
+
+////////// StreamReplicator implementation //////////
+
+StreamReplicator* StreamReplicator::createNew(UsageEnvironment& env, FramedSource* inputSource, Boolean deleteWhenLastReplicaDies) {
+  return new StreamReplicator(env, inputSource, deleteWhenLastReplicaDies);
+}
+
+StreamReplicator::StreamReplicator(UsageEnvironment& env, FramedSource* inputSource, Boolean deleteWhenLastReplicaDies)
+  : Medium(env),
+    fInputSource(inputSource), fDeleteWhenLastReplicaDies(deleteWhenLastReplicaDies), fInputSourceHasClosed(False),
+    fNumReplicas(0), fNumActiveReplicas(0), fNumDeliveriesMadeSoFar(0),
+    fFrameIndex(0), fMasterReplica(NULL), fReplicasAwaitingCurrentFrame(NULL), fReplicasAwaitingNextFrame(NULL) {
+}
+
+StreamReplicator::~StreamReplicator() {
+  Medium::close(fInputSource);
+}
+
+FramedSource* StreamReplicator::createStreamReplica() {
+  ++fNumReplicas;
+  return new StreamReplica(*this);
+}
+
+void StreamReplicator::getNextFrame(StreamReplica* replica) {
+  if (fInputSourceHasClosed) { // handle closure instead
+    replica->handleClosure();
+    return;
+  }
+
+  if (replica->fFrameIndex == -1) {
+    // This replica had stopped playing (or had just been created), but is now actively reading.  Note this:
+    replica->fFrameIndex = fFrameIndex;
+    ++fNumActiveReplicas;
+  }
+
+  if (fMasterReplica == NULL) {
+    // This is the first replica to request the next unread frame.  Make it the 'master' replica - meaning that we read the frame
+    // into its buffer, and then copy from this into the other replicas' buffers.
+    fMasterReplica = replica;
+
+    // Arrange to read the next frame into this replica's buffer:
+    if (fInputSource != NULL) fInputSource->getNextFrame(fMasterReplica->fTo, fMasterReplica->fMaxSize,
+							 afterGettingFrame, this, onSourceClosure, this);
+  } else if (replica->fFrameIndex != fFrameIndex) {
+    // This replica is already asking for the next frame (because it has already received the current frame).  Enqueue it:
+    replica->fNext = fReplicasAwaitingNextFrame;
+    fReplicasAwaitingNextFrame = replica;
+  } else {
+    // This replica is asking for the current frame.  Enqueue it:
+    replica->fNext = fReplicasAwaitingCurrentFrame;
+    fReplicasAwaitingCurrentFrame = replica;
+
+    if (fInputSource != NULL && !fInputSource->isCurrentlyAwaitingData()) {
+      // The current frame has already arrived, so deliver it to this replica now:
+      deliverReceivedFrame();
+    }
+  }
+}
+
+void StreamReplicator::deactivateStreamReplica(StreamReplica* replicaBeingDeactivated) {
+  if (replicaBeingDeactivated->fFrameIndex == -1) return; // this replica has already been deactivated (or was never activated at all)
+
+  // Assert: fNumActiveReplicas > 0
+  if (fNumActiveReplicas == 0) fprintf(stderr, "StreamReplicator::deactivateStreamReplica() Internal Error!\n"); // should not happen
+  --fNumActiveReplicas;
+
+  // Forget about any frame delivery that might have just been made to this replica:
+  if (replicaBeingDeactivated->fFrameIndex != fFrameIndex && fNumDeliveriesMadeSoFar > 0) --fNumDeliveriesMadeSoFar;
+
+  replicaBeingDeactivated->fFrameIndex = -1;
+
+  // Check whether the replica being deactivated is the 'master' replica, or is enqueued awaiting a frame:
+  if (replicaBeingDeactivated == fMasterReplica) {
+    // We need to replace the 'master replica', if we can:
+    if (fReplicasAwaitingCurrentFrame == NULL) {
+      // There's currently no replacement 'master replica'
+      fMasterReplica = NULL;
+    } else {
+      // There's another replica that we can use as a replacement 'master replica':
+      fMasterReplica = fReplicasAwaitingCurrentFrame;
+      fReplicasAwaitingCurrentFrame = fReplicasAwaitingCurrentFrame->fNext;
+      fMasterReplica->fNext = NULL;
+    }
+
+    // Check whether the read into the old master replica's buffer is still pending, or has completed:
+    if (fInputSource != NULL) {
+      if (fInputSource->isCurrentlyAwaitingData()) {
+	// We have a pending read into the old master replica's buffer.
+	// We need to stop it, and retry the read with a new master (if available)
+	fInputSource->stopGettingFrames();
+
+	if (fMasterReplica != NULL) {
+	  fInputSource->getNextFrame(fMasterReplica->fTo, fMasterReplica->fMaxSize,
+				     afterGettingFrame, this, onSourceClosure, this);
+	}
+      } else {
+	// The read into the old master replica's buffer has already completed.  Copy the data to the new master replica (if any):
+	if (fMasterReplica != NULL) {
+	  StreamReplica::copyReceivedFrame(fMasterReplica, replicaBeingDeactivated);
+	} else {
+	  // We don't have a new master replica, so we can't copy the received frame to any new replica that might ask for it.
+	  // Fortunately this should be a very rare occurrence.
+	}
+      }
+    }
+  } else {
+    // The replica that's being removed was not our 'master replica', but make sure it's not on either of our queues:
+    if (fReplicasAwaitingCurrentFrame != NULL) {
+      if (replicaBeingDeactivated == fReplicasAwaitingCurrentFrame) {
+	fReplicasAwaitingCurrentFrame = replicaBeingDeactivated->fNext;
+	replicaBeingDeactivated->fNext = NULL;
+      }
+      else {
+	for (StreamReplica* r1 = fReplicasAwaitingCurrentFrame; r1->fNext != NULL; r1 = r1->fNext) {
+	  if (r1->fNext == replicaBeingDeactivated) {
+	    r1->fNext = replicaBeingDeactivated->fNext;
+	    replicaBeingDeactivated->fNext = NULL;
+	    break;
+	  }
+	}
+      }
+    }
+    if (fReplicasAwaitingNextFrame != NULL) {
+      if (replicaBeingDeactivated == fReplicasAwaitingNextFrame) {
+	fReplicasAwaitingNextFrame = replicaBeingDeactivated->fNext;
+	replicaBeingDeactivated->fNext = NULL;
+      }
+      else {
+	for (StreamReplica* r2 = fReplicasAwaitingNextFrame; r2->fNext != NULL; r2 = r2->fNext) {
+	  if (r2->fNext == replicaBeingDeactivated) {
+	    r2->fNext = replicaBeingDeactivated->fNext;
+	    replicaBeingDeactivated->fNext = NULL;
+	    break;
+	  }
+	}
+      }
+    }
+
+    // Check for the possibility that - now that a replica has been deactivated - all other
+    // replicas have received the current frame, and so now we need to complete delivery to
+    // the master replica:
+    if (fMasterReplica != NULL && fInputSource != NULL && !fInputSource->isCurrentlyAwaitingData()) deliverReceivedFrame();
+  }
+
+  if (fNumActiveReplicas == 0 && fInputSource != NULL) fInputSource->stopGettingFrames(); // tell our source to stop too
+}
+
+void StreamReplicator::removeStreamReplica(StreamReplica* replicaBeingRemoved) {
+  // First, handle the replica that's being removed the same way that we would if it were merely being deactivated:
+  deactivateStreamReplica(replicaBeingRemoved);
+
+  // Assert: fNumReplicas > 0
+  if (fNumReplicas == 0) fprintf(stderr, "StreamReplicator::removeStreamReplica() Internal Error!\n"); // should not happen
+  --fNumReplicas;
+
+  // If this was the last replica, then delete ourselves (if we were set up to do so):
+  if (fNumReplicas == 0 && fDeleteWhenLastReplicaDies) {
+    Medium::close(this);
+    return;
+  }
+}
+
+void StreamReplicator::afterGettingFrame(void* clientData, unsigned frameSize, unsigned numTruncatedBytes,
+					 struct timeval presentationTime, unsigned durationInMicroseconds) {
+  ((StreamReplicator*)clientData)->afterGettingFrame(frameSize, numTruncatedBytes, presentationTime, durationInMicroseconds);
+}
+
+void StreamReplicator::afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes,
+					 struct timeval presentationTime, unsigned durationInMicroseconds) {
+  // The frame was read into our master replica's buffer.  Update the master replica's state, but don't complete delivery to it
+  // just yet.  We do that later, after we're sure that we've delivered it to all other replicas.
+  fMasterReplica->fFrameSize = frameSize;
+  fMasterReplica->fNumTruncatedBytes = numTruncatedBytes;
+  fMasterReplica->fPresentationTime = presentationTime;
+  fMasterReplica->fDurationInMicroseconds = durationInMicroseconds;
+
+  deliverReceivedFrame();
+}
+
+void StreamReplicator::onSourceClosure(void* clientData) {
+  ((StreamReplicator*)clientData)->onSourceClosure();
+}
+
+void StreamReplicator::onSourceClosure() {
+  fInputSourceHasClosed = True;
+
+  // Signal the closure to each replica that is currently awaiting a frame:
+  StreamReplica* replica;
+  while ((replica = fReplicasAwaitingCurrentFrame) != NULL) {
+    fReplicasAwaitingCurrentFrame = replica->fNext;
+    replica->fNext = NULL;
+    replica->handleClosure();
+  }
+  while ((replica = fReplicasAwaitingNextFrame) != NULL) {
+    fReplicasAwaitingNextFrame = replica->fNext;
+    replica->fNext = NULL;
+    replica->handleClosure();
+  }
+  if ((replica = fMasterReplica) != NULL) {
+    fMasterReplica = NULL;
+    replica->handleClosure();
+  }
+}
+
+void StreamReplicator::deliverReceivedFrame() {
+  // The 'master replica' has received its copy of the current frame.
+  // Copy it (and complete delivery) to any other replica that has requested this frame.
+  // Then, if no more requests for this frame are expected, complete delivery to the 'master replica' itself.
+  StreamReplica* replica;
+  while ((replica = fReplicasAwaitingCurrentFrame) != NULL) {
+    fReplicasAwaitingCurrentFrame = replica->fNext;
+    replica->fNext = NULL;
+    
+    // Assert: fMasterReplica != NULL
+    if (fMasterReplica == NULL) fprintf(stderr, "StreamReplicator::deliverReceivedFrame() Internal Error 1!\n"); // shouldn't happen
+    StreamReplica::copyReceivedFrame(replica, fMasterReplica);
+    replica->fFrameIndex = 1 - replica->fFrameIndex; // toggle it (0<->1), because this replica no longer awaits the current frame
+    ++fNumDeliveriesMadeSoFar;
+
+    // Assert: fNumDeliveriesMadeSoFar < fNumActiveReplicas; // because we still have the 'master replica' to deliver to
+    if (!(fNumDeliveriesMadeSoFar < fNumActiveReplicas)) fprintf(stderr, "StreamReplicator::deliverReceivedFrame() Internal Error 2(%d,%d)!\n", fNumDeliveriesMadeSoFar, fNumActiveReplicas); // should not happen
+
+    // Complete delivery to this replica:
+    FramedSource::afterGetting(replica);
+  }
+
+  if (fNumDeliveriesMadeSoFar == fNumActiveReplicas - 1 && fMasterReplica != NULL) {
+    // No more requests for this frame are expected, so complete delivery to the 'master replica':
+    replica = fMasterReplica;
+    fMasterReplica = NULL;
+    replica->fFrameIndex = 1 - replica->fFrameIndex; // toggle it (0<->1), because this replica no longer awaits the current frame
+    fFrameIndex = 1 - fFrameIndex; // toggle it (0<->1) for the next frame
+    fNumDeliveriesMadeSoFar = 0; // reset for the next frame
+
+    if (fReplicasAwaitingNextFrame != NULL) {
+      // One of the other replicas has already requested the next frame, so make it the next 'master replica':
+      fMasterReplica = fReplicasAwaitingNextFrame;
+      fReplicasAwaitingNextFrame = fReplicasAwaitingNextFrame->fNext;
+      fMasterReplica->fNext = NULL;
+
+      // Arrange to read the next frame into this replica's buffer:
+      if (fInputSource != NULL) fInputSource->getNextFrame(fMasterReplica->fTo, fMasterReplica->fMaxSize,
+							   afterGettingFrame, this, onSourceClosure, this);
+    }      
+
+    // Move any other replicas that had already requested the next frame to the 'requesting current frame' list:
+    // Assert: fReplicasAwaitingCurrentFrame == NULL;
+    if (!(fReplicasAwaitingCurrentFrame == NULL)) fprintf(stderr, "StreamReplicator::deliverReceivedFrame() Internal Error 3!\n"); // should not happen
+    fReplicasAwaitingCurrentFrame = fReplicasAwaitingNextFrame;
+    fReplicasAwaitingNextFrame = NULL;
+    
+    // Complete delivery to the 'master' replica (thereby completing all deliveries for this frame):
+    FramedSource::afterGetting(replica);
+  }
+}
+
+
+////////// StreamReplica implementation //////////
+
+StreamReplica::StreamReplica(StreamReplicator& ourReplicator)
+  : FramedSource(ourReplicator.envir()),
+    fOurReplicator(ourReplicator),
+    fFrameIndex(-1/*we haven't started playing yet*/), fNext(NULL) {
+}
+
+StreamReplica::~StreamReplica() {
+  fOurReplicator.removeStreamReplica(this);
+}
+
+void StreamReplica::doGetNextFrame() {
+  fOurReplicator.getNextFrame(this);
+}
+
+void StreamReplica::doStopGettingFrames() {
+  fOurReplicator.deactivateStreamReplica(this);
+}
+
+void StreamReplica::copyReceivedFrame(StreamReplica* toReplica, StreamReplica* fromReplica) {
+  // First, figure out how much data to copy.  ("toReplica" might have a smaller buffer than "fromReplica".)
+  unsigned numNewBytesToTruncate
+    = toReplica->fMaxSize < fromReplica->fFrameSize ? fromReplica->fFrameSize - toReplica->fMaxSize : 0;
+  toReplica->fFrameSize = fromReplica->fFrameSize - numNewBytesToTruncate;
+  toReplica->fNumTruncatedBytes = fromReplica->fNumTruncatedBytes + numNewBytesToTruncate;
+
+  memmove(toReplica->fTo, fromReplica->fTo, toReplica->fFrameSize);
+  toReplica->fPresentationTime = fromReplica->fPresentationTime;
+  toReplica->fDurationInMicroseconds = fromReplica->fDurationInMicroseconds;
+}
diff --git a/liveMedia/T140TextRTPSink.cpp b/liveMedia/T140TextRTPSink.cpp
new file mode 100644
index 0000000..84554fb
--- /dev/null
+++ b/liveMedia/T140TextRTPSink.cpp
@@ -0,0 +1,184 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for T.140 text (RFC 2793)
+// Implementation
+
+#include "T140TextRTPSink.hh"
+#include <GroupsockHelper.hh> // for "gettimeofday()"
+
+////////// T140TextRTPSink implementation //////////
+
+T140TextRTPSink::T140TextRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat)
+  : TextRTPSink(env, RTPgs, rtpPayloadFormat, 1000/*mandatory RTP timestamp frequency for this payload format*/, "T140"),
+    fOurIdleFilter(NULL), fAreInIdlePeriod(True) {
+}
+
+T140TextRTPSink::~T140TextRTPSink() {
+  fSource = fOurIdleFilter; // hack: in case "fSource" had gotten set to NULL before we were called
+  stopPlaying(); // call this now, because we won't have our 'idle filter' when the base class destructor calls it later.
+
+  // Close our 'idle filter' as well:
+  Medium::close(fOurIdleFilter);
+  fSource = NULL; // for the base class destructor, which gets called next
+}
+
+T140TextRTPSink*
+T140TextRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			    unsigned char rtpPayloadFormat) {
+  return new T140TextRTPSink(env, RTPgs, rtpPayloadFormat);
+}
+
+Boolean T140TextRTPSink::continuePlaying() {
+  // First, check whether we have an 'idle filter' set up yet. If not, create it now, and insert it in front of our existing source:
+  if (fOurIdleFilter == NULL) {
+    fOurIdleFilter = new T140IdleFilter(envir(), fSource);
+  } else {
+    fOurIdleFilter->reassignInputSource(fSource);
+  }
+  fSource = fOurIdleFilter;
+
+  // Then call the parent class's implementation:
+  return MultiFramedRTPSink::continuePlaying();
+}
+
+void T140TextRTPSink::doSpecialFrameHandling(unsigned /*fragmentationOffset*/,
+					     unsigned char* /*frameStart*/,
+					     unsigned numBytesInFrame,
+					     struct timeval framePresentationTime,
+					     unsigned /*numRemainingBytes*/) {
+  // Set the RTP 'M' (marker) bit if we have just ended an idle period - i.e., if we were in an idle period, but just got data:
+  if (fAreInIdlePeriod && numBytesInFrame > 0) setMarkerBit();
+  fAreInIdlePeriod = numBytesInFrame == 0;
+
+  setTimestamp(framePresentationTime);
+}
+
+Boolean T140TextRTPSink::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/, unsigned /*numBytesInFrame*/) const {
+  return False; // We don't concatenate input data; instead, send it out immediately
+}
+
+
+////////// T140IdleFilter implementation //////////
+
+T140IdleFilter::T140IdleFilter(UsageEnvironment& env, FramedSource* inputSource)
+  : FramedFilter(env, inputSource),
+    fIdleTimerTask(NULL),
+    fBufferSize(OutPacketBuffer::maxSize), fNumBufferedBytes(0) {
+  fBuffer = new char[fBufferSize];
+}
+
+T140IdleFilter::~T140IdleFilter() {
+  envir().taskScheduler().unscheduleDelayedTask(fIdleTimerTask);
+
+  delete[] fBuffer;
+  detachInputSource(); // so that the subsequent ~FramedFilter() doesn't delete it
+}
+
+#define IDLE_TIMEOUT_MICROSECONDS 300000 /* 300 ms */
+
+void T140IdleFilter::doGetNextFrame() {
+  // First, see if we have buffered data that we can deliver:
+  if (fNumBufferedBytes > 0) {
+    deliverFromBuffer();
+    return;
+  }
+
+  // We don't have any buffered data, so ask our input source for data (unless we've already done so).
+  // But also set a timer to expire if this doesn't arrive promptly:
+  fIdleTimerTask = envir().taskScheduler().scheduleDelayedTask(IDLE_TIMEOUT_MICROSECONDS, handleIdleTimeout, this);
+  if (fInputSource != NULL && !fInputSource->isCurrentlyAwaitingData()) {
+    fInputSource->getNextFrame((unsigned char*)fBuffer, fBufferSize, afterGettingFrame, this, onSourceClosure, this);
+  }
+}
+
+void T140IdleFilter::afterGettingFrame(void* clientData, unsigned frameSize,
+				       unsigned numTruncatedBytes,
+				       struct timeval presentationTime,
+				       unsigned durationInMicroseconds) {
+  ((T140IdleFilter*)clientData)->afterGettingFrame(frameSize, numTruncatedBytes, presentationTime, durationInMicroseconds);
+}
+
+void T140IdleFilter::afterGettingFrame(unsigned frameSize,
+				       unsigned numTruncatedBytes,
+				       struct timeval presentationTime,
+				       unsigned durationInMicroseconds) {
+  // First, cancel any pending idle timer:
+  envir().taskScheduler().unscheduleDelayedTask(fIdleTimerTask);
+
+  // Then note the new data that we have in our buffer:
+  fNumBufferedBytes = frameSize;
+  fBufferedNumTruncatedBytes = numTruncatedBytes;
+  fBufferedDataPresentationTime = presentationTime;
+  fBufferedDataDurationInMicroseconds = durationInMicroseconds;
+
+  // Then, attempt to deliver this data.  (If we can't deliver it now, we'll do so the next time the reader asks for data.)
+  if (isCurrentlyAwaitingData()) (void)deliverFromBuffer();
+}
+
+void T140IdleFilter::doStopGettingFrames() {
+  // Cancel any pending idle timer:
+  envir().taskScheduler().unscheduleDelayedTask(fIdleTimerTask);
+
+  // And call the parent's implementation of this virtual function:
+  FramedFilter::doStopGettingFrames();
+}
+
+void T140IdleFilter::handleIdleTimeout(void* clientData) {
+  ((T140IdleFilter*)clientData)->handleIdleTimeout();
+}
+
+void T140IdleFilter::handleIdleTimeout() {
+  fIdleTimerTask = NULL;
+  // No data has arrived from the upstream source within our specified 'idle period' (after data was requested from downstream).
+  // Send an empty 'idle' frame to our downstream "T140TextRTPSink".  (This will cause an empty RTP packet to get sent.)
+  deliverEmptyFrame();
+}
+
+void T140IdleFilter::deliverFromBuffer() {
+  if (fNumBufferedBytes <= fMaxSize) { // common case
+    fNumTruncatedBytes = fBufferedNumTruncatedBytes;
+    fFrameSize = fNumBufferedBytes;
+  } else {
+    fNumTruncatedBytes = fBufferedNumTruncatedBytes + fNumBufferedBytes - fMaxSize;
+    fFrameSize = fMaxSize;
+  }  
+
+  memmove(fTo, fBuffer, fFrameSize);
+  fPresentationTime = fBufferedDataPresentationTime;
+  fDurationInMicroseconds = fBufferedDataDurationInMicroseconds;
+
+  fNumBufferedBytes = 0; // reset buffer
+  
+  FramedSource::afterGetting(this); // complete delivery
+}
+
+void T140IdleFilter::deliverEmptyFrame() {
+  fFrameSize = fNumTruncatedBytes = 0;
+  gettimeofday(&fPresentationTime, NULL);
+  FramedSource::afterGetting(this); // complete delivery
+}
+
+void T140IdleFilter::onSourceClosure(void* clientData) {
+  ((T140IdleFilter*)clientData)->onSourceClosure();
+}
+
+void T140IdleFilter::onSourceClosure() {
+  envir().taskScheduler().unscheduleDelayedTask(fIdleTimerTask);
+
+  handleClosure();
+}
diff --git a/liveMedia/TCPStreamSink.cpp b/liveMedia/TCPStreamSink.cpp
new file mode 100644
index 0000000..aaa6149
--- /dev/null
+++ b/liveMedia/TCPStreamSink.cpp
@@ -0,0 +1,118 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A sink representing a TCP output stream
+// Implementation
+
+#include "TCPStreamSink.hh"
+#include <GroupsockHelper.hh> // for "ignoreSigPipeOnSocket()"
+
+TCPStreamSink* TCPStreamSink::createNew(UsageEnvironment& env, int socketNum) {
+  return new TCPStreamSink(env, socketNum);
+}
+
+TCPStreamSink::TCPStreamSink(UsageEnvironment& env, int socketNum)
+  : MediaSink(env),
+    fUnwrittenBytesStart(0), fUnwrittenBytesEnd(0),
+    fInputSourceIsOpen(False), fOutputSocketIsWritable(True),
+    fOutputSocketNum(socketNum) {
+  ignoreSigPipeOnSocket(socketNum);
+}
+
+TCPStreamSink::~TCPStreamSink() {
+  // Turn off any pending background handling of our output socket:
+  envir().taskScheduler().disableBackgroundHandling(fOutputSocketNum);
+}
+
+Boolean TCPStreamSink::continuePlaying() {
+  fInputSourceIsOpen = fSource != NULL;
+  processBuffer();
+
+  return True;
+}
+
+#define TCP_STREAM_SINK_MIN_READ_SIZE 1000
+
+void TCPStreamSink::processBuffer() {
+  // First, try writing data to our output socket, if we can:
+  if (fOutputSocketIsWritable && numUnwrittenBytes() > 0) {
+    int numBytesWritten
+      = send(fOutputSocketNum, (const char*)&fBuffer[fUnwrittenBytesStart], numUnwrittenBytes(), 0);
+    if (numBytesWritten < (int)numUnwrittenBytes()) {
+      // The output socket is no longer writable.  Set a handler to be called when it becomes writable again.
+      fOutputSocketIsWritable = False;
+      if (envir().getErrno() != EPIPE) { // on this error, the socket might still be writable, but no longer usable
+	envir().taskScheduler().setBackgroundHandling(fOutputSocketNum, SOCKET_WRITABLE, socketWritableHandler, this);
+      }
+    }
+    if (numBytesWritten > 0) {
+      // We wrote at least some of our data.  Update our buffer pointers:
+      fUnwrittenBytesStart += numBytesWritten;
+      if (fUnwrittenBytesStart > fUnwrittenBytesEnd) fUnwrittenBytesStart = fUnwrittenBytesEnd; // sanity check
+      if (fUnwrittenBytesStart == fUnwrittenBytesEnd && (!fInputSourceIsOpen || !fSource->isCurrentlyAwaitingData())) {
+	fUnwrittenBytesStart = fUnwrittenBytesEnd = 0; // reset the buffer to empty
+      }
+    }
+  }
+
+  // Then, read from our input source, if we can (& we're not already reading from it):
+  if (fInputSourceIsOpen && freeBufferSpace() >= TCP_STREAM_SINK_MIN_READ_SIZE && !fSource->isCurrentlyAwaitingData()) {
+    fSource->getNextFrame(&fBuffer[fUnwrittenBytesEnd], freeBufferSpace(), afterGettingFrame, this, ourOnSourceClosure, this);
+  } else if (!fInputSourceIsOpen && numUnwrittenBytes() == 0) {
+    // We're now done:
+    onSourceClosure();
+  }
+}
+
+void TCPStreamSink::socketWritableHandler(void* clientData, int /*mask*/) {
+  TCPStreamSink* sink = (TCPStreamSink*)clientData;
+  sink->socketWritableHandler1();
+}
+
+void TCPStreamSink::socketWritableHandler1() {
+  envir().taskScheduler().disableBackgroundHandling(fOutputSocketNum); // disable this handler until the next time it's needed
+
+  fOutputSocketIsWritable = True;
+  processBuffer();
+}
+
+void TCPStreamSink::afterGettingFrame(void* clientData, unsigned frameSize, unsigned numTruncatedBytes,
+				struct timeval /*presentationTime*/, unsigned /*durationInMicroseconds*/) {
+  TCPStreamSink* sink = (TCPStreamSink*)clientData;
+  sink->afterGettingFrame(frameSize, numTruncatedBytes);
+}
+
+void TCPStreamSink::afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes) {
+  if (numTruncatedBytes > 0) {
+    envir() << "TCPStreamSink::afterGettingFrame(): The input frame data was too large for our buffer.  "
+	    << numTruncatedBytes
+	    << " bytes of trailing data was dropped!  Correct this by increasing the definition of \"TCP_STREAM_SINK_BUFFER_SIZE\" in \"include/TCPStreamSink.hh\".\n";
+  }
+  fUnwrittenBytesEnd += frameSize;
+  processBuffer();
+}
+
+void TCPStreamSink::ourOnSourceClosure(void* clientData) {
+  TCPStreamSink* sink = (TCPStreamSink*)clientData;
+  sink->ourOnSourceClosure1();
+}
+
+void TCPStreamSink::ourOnSourceClosure1() {
+  // The input source has closed:
+  fInputSourceIsOpen = False;
+  processBuffer();
+}
diff --git a/liveMedia/TLSState.cpp b/liveMedia/TLSState.cpp
new file mode 100644
index 0000000..418db90
--- /dev/null
+++ b/liveMedia/TLSState.cpp
@@ -0,0 +1,122 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// State encapsulating a TLS connection
+// Implementation
+
+#include "TLSState.hh"
+#include "RTSPClient.hh"
+
+TLSState::TLSState(RTSPClient& client)
+  : isNeeded(False)
+#ifndef NO_OPENSSL
+  , fClient(client), fHasBeenSetup(False), fCtx(NULL), fCon(NULL)
+#endif
+{
+}
+
+TLSState::~TLSState() {
+  reset();
+}
+
+int TLSState::connect(int socketNum) {
+#ifndef NO_OPENSSL
+  if (!fHasBeenSetup && !setup(socketNum)) return -1; // error
+  
+  // Complete the SSL-level connection to the server:
+  int sslConnectResult = SSL_connect(fCon);
+  int sslGetErrorResult = SSL_get_error(fCon, sslConnectResult);
+
+  if (sslConnectResult > 0) {
+    return sslConnectResult; // connection has completed
+  } else if (sslConnectResult < 0
+	      && (sslGetErrorResult == SSL_ERROR_WANT_READ ||
+		  sslGetErrorResult == SSL_ERROR_WANT_WRITE)) {
+    // We need to wait until the socket is readable or writable:
+    fClient.envir().taskScheduler()
+      .setBackgroundHandling(socketNum,
+			     sslGetErrorResult == SSL_ERROR_WANT_READ ? SOCKET_READABLE : SOCKET_WRITABLE,
+			     (TaskScheduler::BackgroundHandlerProc*)&RTSPClient::connectionHandler,
+			     &fClient);
+    return 0; // connection is pending
+  } else {
+    fClient.envir().setResultErrMsg("TLS connection to server failed: ", sslGetErrorResult);
+    return -1; // error
+  }
+#else
+  return -1;	   
+#endif
+}
+
+int TLSState::write(const char* data, unsigned count) {
+#ifndef NO_OPENSSL
+  return SSL_write(fCon, data, count);
+#else
+  return -1;
+#endif
+}
+
+int TLSState::read(u_int8_t* buffer, unsigned bufferSize) {
+#ifndef NO_OPENSSL
+  int result = SSL_read(fCon, buffer, bufferSize);
+  if (result < 0 && SSL_get_error(fCon, result) == SSL_ERROR_WANT_READ) {
+    // The data can't be delivered yet.  Return 0 (bytes read); we'll try again later
+    return 0;
+  }
+  return result;
+#else
+  return 0;
+#endif
+}
+
+void TLSState::reset() {
+#ifndef NO_OPENSSL
+  if (fHasBeenSetup) SSL_shutdown(fCon);
+
+  if (fCon != NULL) { SSL_free(fCon); fCon = NULL; }
+  if (fCtx != NULL) { SSL_CTX_free(fCtx); fCtx = NULL; }
+#endif
+}
+
+Boolean TLSState::setup(int socketNum) {
+#ifndef NO_OPENSSL
+  do {
+    (void)SSL_library_init();
+
+    SSL_METHOD const* meth = SSLv23_client_method();
+    if (meth == NULL) break;
+
+    fCtx = SSL_CTX_new(meth);
+    if (fCtx == NULL) break;
+
+    fCon = SSL_new(fCtx);
+    if (fCon == NULL) break;
+
+    BIO* bio = BIO_new_socket(socketNum, BIO_NOCLOSE);
+    SSL_set_bio(fCon, bio, bio);
+
+    SSL_set_connect_state(fCon);
+
+    fHasBeenSetup = True;
+    return True;
+  } while (0);
+#endif
+
+  // An error occurred:
+  reset();
+  return False;
+}
diff --git a/liveMedia/TextRTPSink.cpp b/liveMedia/TextRTPSink.cpp
new file mode 100644
index 0000000..10b349e
--- /dev/null
+++ b/liveMedia/TextRTPSink.cpp
@@ -0,0 +1,36 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic RTP sink for text codecs (abstract base class)
+// Implementation
+
+#include "TextRTPSink.hh"
+
+TextRTPSink::TextRTPSink(UsageEnvironment& env,
+			 Groupsock* rtpgs, unsigned char rtpPayloadType,
+			 unsigned rtpTimestampFrequency,
+			 char const* rtpPayloadFormatName)
+  : MultiFramedRTPSink(env, rtpgs, rtpPayloadType, rtpTimestampFrequency,
+		       rtpPayloadFormatName) {
+}
+
+TextRTPSink::~TextRTPSink() {
+}
+
+char const* TextRTPSink::sdpMediaType() const {
+  return "text";
+}
diff --git a/liveMedia/TheoraVideoRTPSink.cpp b/liveMedia/TheoraVideoRTPSink.cpp
new file mode 100644
index 0000000..aed4bc3
--- /dev/null
+++ b/liveMedia/TheoraVideoRTPSink.cpp
@@ -0,0 +1,176 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for Theora video
+// Implementation
+
+#include "TheoraVideoRTPSink.hh"
+#include "Base64.hh"
+#include "VorbisAudioRTPSource.hh" // for parseVorbisOrTheoraConfigStr()
+#include "VorbisAudioRTPSink.hh" // for generateVorbisOrTheoraConfigStr()
+
+TheoraVideoRTPSink* TheoraVideoRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+	    u_int8_t* identificationHeader, unsigned identificationHeaderSize,
+	    u_int8_t* commentHeader, unsigned commentHeaderSize,
+	    u_int8_t* setupHeader, unsigned setupHeaderSize,
+	    u_int32_t identField) {
+  return new TheoraVideoRTPSink(env, RTPgs,
+				rtpPayloadFormat,
+				identificationHeader, identificationHeaderSize,
+				commentHeader, commentHeaderSize,
+				setupHeader, setupHeaderSize, identField);
+}
+
+TheoraVideoRTPSink* TheoraVideoRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+            char const* configStr) {
+  // Begin by decoding and unpacking the configuration string:
+  u_int8_t* identificationHeader; unsigned identificationHeaderSize;
+  u_int8_t* commentHeader; unsigned commentHeaderSize;
+  u_int8_t* setupHeader; unsigned setupHeaderSize;
+  u_int32_t identField;
+
+  parseVorbisOrTheoraConfigStr(configStr,
+                               identificationHeader, identificationHeaderSize,
+                               commentHeader, commentHeaderSize,
+                               setupHeader, setupHeaderSize,
+                               identField);
+
+  TheoraVideoRTPSink* resultSink
+    = new TheoraVideoRTPSink(env, RTPgs, rtpPayloadFormat,
+                             identificationHeader, identificationHeaderSize,
+                             commentHeader, commentHeaderSize,
+                             setupHeader, setupHeaderSize,
+                             identField);
+  delete[] identificationHeader; delete[] commentHeader; delete[] setupHeader;
+
+  return resultSink;
+}
+
+TheoraVideoRTPSink
+::TheoraVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+		     u_int8_t* identificationHeader, unsigned identificationHeaderSize,
+		     u_int8_t* commentHeader, unsigned commentHeaderSize,
+		     u_int8_t* setupHeader, unsigned setupHeaderSize,
+		     u_int32_t identField)
+  : VideoRTPSink(env, RTPgs, rtpPayloadFormat, 90000, "THEORA"),
+    fIdent(identField), fFmtpSDPLine(NULL) {
+  static const char *pf_to_str[] = {
+    "YCbCr-4:2:0",
+    "Reserved",
+    "YCbCr-4:2:2",
+    "YCbCr-4:4:4",
+  };
+  
+  unsigned width = 1280; // default value
+  unsigned height = 720; // default value
+  unsigned pf = 0; // default value
+  if (identificationHeaderSize >= 42) {
+    // Parse this header to get the "width", "height", "pf" (pixel format), and
+    // 'nominal bitrate' parameters:
+    u_int8_t* p = identificationHeader; // alias
+    width = (p[14]<<16)|(p[15]<<8)|p[16];
+    height = (p[17]<<16)|(p[18]<<8)|p[19];
+    pf = (p[41]&0x18)>>3;
+    unsigned nominalBitrate = (p[37]<<16)|(p[38]<<8)|p[39];
+    if (nominalBitrate > 0) estimatedBitrate() = nominalBitrate/1000;
+  }
+
+  // Generate a 'config' string from the supplied configuration headers:
+  char* base64PackedHeaders
+    = generateVorbisOrTheoraConfigStr(identificationHeader, identificationHeaderSize,
+                                      commentHeader, commentHeaderSize,
+                                      setupHeader, setupHeaderSize,
+                                      identField);
+  if (base64PackedHeaders == NULL) return;
+
+  // Then use this 'config' string to construct our "a=fmtp:" SDP line:
+  unsigned fmtpSDPLineMaxSize = 200 + strlen(base64PackedHeaders);// 200 => more than enough space
+  fFmtpSDPLine = new char[fmtpSDPLineMaxSize];
+  sprintf(fFmtpSDPLine, "a=fmtp:%d sampling=%s;width=%u;height=%u;delivery-method=out_band/rtsp;configuration=%s\r\n", rtpPayloadType(), pf_to_str[pf], width, height, base64PackedHeaders);
+  delete[] base64PackedHeaders;
+}
+
+TheoraVideoRTPSink::~TheoraVideoRTPSink() {
+  delete[] fFmtpSDPLine;
+}
+
+char const* TheoraVideoRTPSink::auxSDPLine() {
+  return fFmtpSDPLine;
+}
+
+void TheoraVideoRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* frameStart,
+			 unsigned numBytesInFrame,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  // Set the 4-byte "payload header", as defined in http://svn.xiph.org/trunk/theora/doc/draft-ietf-avt-rtp-theora-00.txt
+  u_int8_t header[6];
+  
+  // The three bytes of the header are our "Ident":
+  header[0] = fIdent>>16; header[1] = fIdent>>8; header[2] = fIdent;
+  
+  // The final byte contains the "F", "TDT", and "numPkts" fields:
+  u_int8_t F; // Fragment type
+  if (numRemainingBytes > 0) {
+    if (fragmentationOffset > 0) {
+      F = 2<<6; // continuation fragment
+    } else {
+      F = 1<<6; // start fragment
+    }
+  } else {
+    if (fragmentationOffset > 0) {
+      F = 3<<6; // end fragment
+    } else {
+      F = 0<<6; // not fragmented
+    }
+  }
+  u_int8_t const TDT = 0<<4; // Theora Data Type (always a "Raw Theora payload")
+  u_int8_t numPkts = F == 0 ? (numFramesUsedSoFar() + 1): 0; // set to 0 when we're a fragment
+  header[3] = F|TDT|numPkts;
+  
+  // There's also a 2-byte 'frame-specific' header: The length of the
+  // Theora data:
+  header[4] = numBytesInFrame >>8;
+  header[5] = numBytesInFrame;
+  setSpecialHeaderBytes(header, sizeof(header));
+  
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit:
+    setMarkerBit();
+  }
+  
+  // Important: Also call our base class's doSpecialFrameHandling(),
+  // to set the packet's timestamp:
+  MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
+					     frameStart, numBytesInFrame,
+					     framePresentationTime,
+					     numRemainingBytes);
+}
+
+Boolean TheoraVideoRTPSink::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+							   unsigned /*numBytesInFrame*/) const {
+  // Only one frame per packet:
+  return False;
+}
+
+unsigned TheoraVideoRTPSink::specialHeaderSize() const {
+  return 6;
+}
diff --git a/liveMedia/TheoraVideoRTPSource.cpp b/liveMedia/TheoraVideoRTPSource.cpp
new file mode 100644
index 0000000..06cc26f
--- /dev/null
+++ b/liveMedia/TheoraVideoRTPSource.cpp
@@ -0,0 +1,113 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Theora Video RTP Sources
+// Implementation
+
+#include "TheoraVideoRTPSource.hh"
+
+////////// TheoraBufferedPacket and TheoraBufferedPacketFactory //////////
+
+class TheoraBufferedPacket: public BufferedPacket {
+public:
+  TheoraBufferedPacket();
+  virtual ~TheoraBufferedPacket();
+
+private: // redefined virtual functions
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+					 unsigned dataSize);
+};
+
+class TheoraBufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+
+///////// TheoraVideoRTPSource implementation ////////
+
+TheoraVideoRTPSource*
+TheoraVideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				unsigned char rtpPayloadFormat) {
+  return new TheoraVideoRTPSource(env, RTPgs, rtpPayloadFormat);
+}
+
+TheoraVideoRTPSource
+::TheoraVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		       unsigned char rtpPayloadFormat)
+  : MultiFramedRTPSource(env, RTPgs, rtpPayloadFormat, 90000,
+			 new TheoraBufferedPacketFactory),
+    fCurPacketIdent(0) {
+}
+
+TheoraVideoRTPSource::~TheoraVideoRTPSource() {
+}
+
+Boolean TheoraVideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  resultSpecialHeaderSize = 4;
+  if (packetSize < resultSpecialHeaderSize) return False; // packet was too small
+
+  // The first 3 bytes of the header are the "Ident" field:
+  fCurPacketIdent = (headerStart[0]<<16) | (headerStart[1]<<8) | headerStart[2];
+
+  // The 4th byte is F|TDT|numPkts.
+  // Reject any packet with TDT == 3:
+  if ((headerStart[3]&0x30) == 0x30) return False;
+
+  u_int8_t F = headerStart[3]>>6;
+  fCurrentPacketBeginsFrame = F <= 1; // "Not Fragmented" or "Start Fragment"
+  fCurrentPacketCompletesFrame = F == 0 || F == 3; // "Not Fragmented" or "End Fragment"
+
+  return True;
+}
+
+char const* TheoraVideoRTPSource::MIMEtype() const {
+  return "video/THEORA";
+}
+
+
+////////// TheoraBufferedPacket and TheoraBufferedPacketFactory implementation //////////
+
+TheoraBufferedPacket::TheoraBufferedPacket() {
+}
+
+TheoraBufferedPacket::~TheoraBufferedPacket() {
+}
+
+unsigned TheoraBufferedPacket
+::nextEnclosedFrameSize(unsigned char*& framePtr, unsigned dataSize) {
+  if (dataSize < 2) {
+    // There's not enough space for a 2-byte header.  TARFU!  Just return the data that's left:
+    return dataSize;
+  }
+
+  unsigned frameSize = (framePtr[0]<<8) | framePtr[1];
+  framePtr += 2;
+  if (frameSize > dataSize - 2) return dataSize - 2; // inconsistent frame size => just return all the data that's left
+
+  return frameSize;
+}
+
+BufferedPacket* TheoraBufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* /*ourSource*/) {
+  return new TheoraBufferedPacket();
+}
diff --git a/liveMedia/VP8VideoRTPSink.cpp b/liveMedia/VP8VideoRTPSink.cpp
new file mode 100644
index 0000000..80a8b81
--- /dev/null
+++ b/liveMedia/VP8VideoRTPSink.cpp
@@ -0,0 +1,68 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for VP8 video
+// Implementation
+
+#include "VP8VideoRTPSink.hh"
+
+VP8VideoRTPSink
+::VP8VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat)
+  : VideoRTPSink(env, RTPgs, rtpPayloadFormat, 90000, "VP8") {
+}
+
+VP8VideoRTPSink::~VP8VideoRTPSink() {
+}
+
+VP8VideoRTPSink*
+VP8VideoRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat) {
+  return new VP8VideoRTPSink(env, RTPgs, rtpPayloadFormat);
+}
+
+Boolean VP8VideoRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+				 unsigned /*numBytesInFrame*/) const {
+  // A packet can contain only one frame
+  return False;
+}
+
+void VP8VideoRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* /*frameStart*/,
+			 unsigned /*numBytesInFrame*/,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  // Set the "VP8 Payload Descriptor" (just the minimal required 1-byte version):
+  u_int8_t vp8PayloadDescriptor = fragmentationOffset == 0 ? 0x10 : 0x00;
+    // X = R = N = 0; PartID = 0; S = 1 iff this is the first (or only) fragment of the frame
+  setSpecialHeaderBytes(&vp8PayloadDescriptor, 1);
+
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the RTP 'M' ('marker') bit:
+    setMarkerBit();
+  }
+
+  // Also set the RTP timestamp:
+  setTimestamp(framePresentationTime);
+}
+
+
+unsigned VP8VideoRTPSink::specialHeaderSize() const {
+  // We include only the required 1-byte form of the "VP8 Payload Descriptor":
+  return 1;
+}
diff --git a/liveMedia/VP8VideoRTPSource.cpp b/liveMedia/VP8VideoRTPSource.cpp
new file mode 100644
index 0000000..d2c6a03
--- /dev/null
+++ b/liveMedia/VP8VideoRTPSource.cpp
@@ -0,0 +1,86 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// VP8 Video RTP Sources
+// Implementation
+
+#include "VP8VideoRTPSource.hh"
+
+VP8VideoRTPSource*
+VP8VideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			      unsigned char rtpPayloadFormat,
+			      unsigned rtpTimestampFrequency) {
+  return new VP8VideoRTPSource(env, RTPgs, rtpPayloadFormat,
+			       rtpTimestampFrequency);
+}
+
+VP8VideoRTPSource
+::VP8VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency) {
+}
+
+VP8VideoRTPSource::~VP8VideoRTPSource() {
+}
+
+#define incrHeader do { ++resultSpecialHeaderSize; ++headerStart; if (--packetSize == 0) return False; } while (0)
+
+Boolean VP8VideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  // The special header is from 1 to 6 bytes long.
+  if (packetSize == 0) return False; // error
+  resultSpecialHeaderSize = 1; // unless we learn otherwise
+
+  u_int8_t const byte1 = *headerStart;
+  Boolean const X = (byte1&0x80) != 0;
+  Boolean const S = (byte1&0x10) != 0;
+  u_int8_t const PartID = byte1&0x0F;
+
+  fCurrentPacketBeginsFrame = S && PartID == 0;
+  fCurrentPacketCompletesFrame = packet->rtpMarkerBit(); // RTP header's "M" bit
+
+  if (X) {
+    incrHeader;
+
+    u_int8_t const byte2 = *headerStart;
+    Boolean const I = (byte2&0x80) != 0;
+    Boolean const L = (byte2&0x40) != 0;
+    Boolean const T = (byte2&0x20) != 0;
+    Boolean const K = (byte2&0x10) != 0;
+
+    if (I) {
+      incrHeader;
+      if ((*headerStart)&0x80) { // extension flag in the PictureID is set
+	incrHeader;
+      }
+    }
+
+    if (L) incrHeader;
+    if (T||K) incrHeader;
+  }
+  
+  return True;
+}
+
+char const* VP8VideoRTPSource::MIMEtype() const {
+  return "video/VP8";
+}
diff --git a/liveMedia/VP9VideoRTPSink.cpp b/liveMedia/VP9VideoRTPSink.cpp
new file mode 100644
index 0000000..ab1d3bb
--- /dev/null
+++ b/liveMedia/VP9VideoRTPSink.cpp
@@ -0,0 +1,71 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for VP9 video
+// Implementation
+
+#include "VP9VideoRTPSink.hh"
+
+VP9VideoRTPSink
+::VP9VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat)
+  : VideoRTPSink(env, RTPgs, rtpPayloadFormat, 90000, "VP9") {
+}
+
+VP9VideoRTPSink::~VP9VideoRTPSink() {
+}
+
+VP9VideoRTPSink*
+VP9VideoRTPSink::createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat) {
+  return new VP9VideoRTPSink(env, RTPgs, rtpPayloadFormat);
+}
+
+Boolean VP9VideoRTPSink
+::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+				 unsigned /*numBytesInFrame*/) const {
+  // A packet can contain only one frame
+  return False;
+}
+
+void VP9VideoRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* /*frameStart*/,
+			 unsigned /*numBytesInFrame*/,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  // Set the "VP9 Payload Descriptor" (just the minimal required 1-byte version):
+  u_int8_t vp9PayloadDescriptor = fragmentationOffset == 0 ? 0x10 : 0x00;
+    // I = L = F = V = U = 0; S = 1 iff this is the first (or only) fragment of the frame
+
+  if (numRemainingBytes == 0) {
+    // This packet contains the last (or only) fragment of the frame.
+    // Set the E bit:
+    vp9PayloadDescriptor |= 0x08;
+    // Also set the RTP 'M' ('marker') bit:
+    setMarkerBit();
+  }
+
+  setSpecialHeaderBytes(&vp9PayloadDescriptor, 1);
+
+  // Also set the RTP timestamp:
+  setTimestamp(framePresentationTime);
+}
+
+
+unsigned VP9VideoRTPSink::specialHeaderSize() const {
+  // We include only the required 1-byte form of the "VP9 Payload Descriptor":
+  return 1;
+}
diff --git a/liveMedia/VP9VideoRTPSource.cpp b/liveMedia/VP9VideoRTPSource.cpp
new file mode 100644
index 0000000..150209f
--- /dev/null
+++ b/liveMedia/VP9VideoRTPSource.cpp
@@ -0,0 +1,108 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// VP9 Video RTP Sources
+// Implementation
+
+#include "VP9VideoRTPSource.hh"
+
+VP9VideoRTPSource*
+VP9VideoRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+			      unsigned char rtpPayloadFormat,
+			      unsigned rtpTimestampFrequency) {
+  return new VP9VideoRTPSource(env, RTPgs, rtpPayloadFormat,
+			       rtpTimestampFrequency);
+}
+
+VP9VideoRTPSource
+::VP9VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency) {
+}
+
+VP9VideoRTPSource::~VP9VideoRTPSource() {
+}
+
+#define incrHeader do { ++resultSpecialHeaderSize; ++headerStart; if (--packetSize == 0) return False; } while (0)
+
+Boolean VP9VideoRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  // Figure out the size of the special header.
+  if (packetSize == 0) return False; // error
+  resultSpecialHeaderSize = 1; // unless we learn otherwise
+
+  u_int8_t const byte1 = *headerStart;
+  Boolean const I = (byte1&0x80) != 0;
+  Boolean const L = (byte1&0x40) != 0;
+  Boolean const F = (byte1&0x20) != 0;
+  Boolean const B = (byte1&0x10) != 0;
+  Boolean const E = (byte1&0x08) != 0;
+  Boolean const V = (byte1&0x04) != 0;
+  Boolean const U = (byte1&0x02) != 0;
+
+  fCurrentPacketBeginsFrame = B;
+  fCurrentPacketCompletesFrame = E;
+      // use this instead of the RTP header's 'M' bit (which might not be accurate)
+
+  if (I) { // PictureID present
+    incrHeader;
+    Boolean const M = ((*headerStart)&0x80) != 0;
+    if (M) incrHeader;
+  }
+
+  if (L) { // Layer indices present
+    incrHeader;
+    if (F) { // Reference indices present
+      incrHeader;
+      unsigned R = (*headerStart)&0x03;
+      while (R-- > 0) {
+	incrHeader;
+	Boolean const X = ((*headerStart)&0x10) != 0;
+	if (X) incrHeader;
+      }
+    }
+  }
+
+  if (V) { // Scalability Structure (SS) present
+    incrHeader;
+    unsigned patternLength = *headerStart;
+    while (patternLength-- > 0) {
+      incrHeader;
+      unsigned R = (*headerStart)&0x03;
+      while (R-- > 0) {
+	incrHeader;
+	Boolean const X = ((*headerStart)&0x10) != 0;
+	if (X) incrHeader;
+      }
+    }
+  }
+
+  if (U) { // Scalability Structure Update (SU) present
+    return False; // This structure isn't yet defined in the VP9 payload format I-D
+  }
+  
+  return True;
+}
+
+char const* VP9VideoRTPSource::MIMEtype() const {
+  return "video/VP9";
+}
diff --git a/liveMedia/VideoRTPSink.cpp b/liveMedia/VideoRTPSink.cpp
new file mode 100644
index 0000000..f9402a1
--- /dev/null
+++ b/liveMedia/VideoRTPSink.cpp
@@ -0,0 +1,36 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic RTP sink for video codecs (abstract base class)
+// Implementation
+
+#include "VideoRTPSink.hh"
+
+VideoRTPSink::VideoRTPSink(UsageEnvironment& env,
+			   Groupsock* rtpgs, unsigned char rtpPayloadType,
+			   unsigned rtpTimestampFrequency,
+			   char const* rtpPayloadFormatName)
+  : MultiFramedRTPSink(env, rtpgs, rtpPayloadType, rtpTimestampFrequency,
+		       rtpPayloadFormatName) {
+}
+
+VideoRTPSink::~VideoRTPSink() {
+}
+
+char const* VideoRTPSink::sdpMediaType() const {
+  return "video";
+}
diff --git a/liveMedia/VorbisAudioRTPSink.cpp b/liveMedia/VorbisAudioRTPSink.cpp
new file mode 100644
index 0000000..e4142f7
--- /dev/null
+++ b/liveMedia/VorbisAudioRTPSink.cpp
@@ -0,0 +1,266 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for Vorbis audio
+// Implementation
+
+#include "VorbisAudioRTPSink.hh"
+#include "Base64.hh"
+#include "VorbisAudioRTPSource.hh" // for parseVorbisOrTheoraConfigStr()
+
+VorbisAudioRTPSink* VorbisAudioRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    u_int8_t rtpPayloadFormat, u_int32_t rtpTimestampFrequency, unsigned numChannels,
+	    u_int8_t* identificationHeader, unsigned identificationHeaderSize,
+	    u_int8_t* commentHeader, unsigned commentHeaderSize,
+	    u_int8_t* setupHeader, unsigned setupHeaderSize,
+	    u_int32_t identField) {
+  return new VorbisAudioRTPSink(env, RTPgs,
+				rtpPayloadFormat, rtpTimestampFrequency, numChannels,
+				identificationHeader, identificationHeaderSize,
+				commentHeader, commentHeaderSize,
+				setupHeader, setupHeaderSize,
+				identField);
+}
+
+VorbisAudioRTPSink* VorbisAudioRTPSink
+::createNew(UsageEnvironment& env, Groupsock* RTPgs,u_int8_t rtpPayloadFormat,
+	    u_int32_t rtpTimestampFrequency, unsigned numChannels,
+	    char const* configStr) {
+  // Begin by decoding and unpacking the configuration string:
+  u_int8_t* identificationHeader; unsigned identificationHeaderSize;
+  u_int8_t* commentHeader; unsigned commentHeaderSize;
+  u_int8_t* setupHeader; unsigned setupHeaderSize;
+  u_int32_t identField;
+
+  parseVorbisOrTheoraConfigStr(configStr,
+			       identificationHeader, identificationHeaderSize,
+			       commentHeader, commentHeaderSize,
+			       setupHeader, setupHeaderSize,
+			       identField);
+
+  VorbisAudioRTPSink* resultSink
+    = new VorbisAudioRTPSink(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency, numChannels,
+			     identificationHeader, identificationHeaderSize,
+			     commentHeader, commentHeaderSize,
+			     setupHeader, setupHeaderSize,
+			     identField);
+  delete[] identificationHeader; delete[] commentHeader; delete[] setupHeader;
+
+  return resultSink;
+}
+
+VorbisAudioRTPSink
+::VorbisAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+		     u_int32_t rtpTimestampFrequency, unsigned numChannels,
+		     u_int8_t* identificationHeader, unsigned identificationHeaderSize,
+		     u_int8_t* commentHeader, unsigned commentHeaderSize,
+		     u_int8_t* setupHeader, unsigned setupHeaderSize,
+		     u_int32_t identField)
+  : AudioRTPSink(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency, "VORBIS", numChannels),
+    fIdent(identField), fFmtpSDPLine(NULL) {
+  if (identificationHeaderSize >= 28) {
+    // Get the 'bitrate' values from this header, and use them to set our estimated bitrate:
+    u_int32_t val;
+    u_int8_t* p;
+    
+    p = &identificationHeader[16];
+    val = ((p[3]*256 + p[2])*256 + p[1])*256 + p[0]; // i.e., little-endian
+    int bitrate_maximum = (int)val;
+    if (bitrate_maximum < 0) bitrate_maximum = 0;
+    
+    p = &identificationHeader[20];
+    val = ((p[3]*256 + p[2])*256 + p[1])*256 + p[0]; // i.e., little-endian
+    int bitrate_nominal = (int)val;
+    if (bitrate_nominal < 0) bitrate_nominal = 0;
+    
+    p = &identificationHeader[24];
+    val = ((p[3]*256 + p[2])*256 + p[1])*256 + p[0]; // i.e., little-endian
+    int bitrate_minimum = (int)val;
+    if (bitrate_minimum < 0) bitrate_minimum = 0;
+    
+    int bitrate
+      = bitrate_nominal > 0 ? bitrate_nominal
+      : bitrate_maximum > 0 ? bitrate_maximum
+      : bitrate_minimum > 0 ? bitrate_minimum : 0;
+    if (bitrate > 0) estimatedBitrate() = ((unsigned)bitrate)/1000;
+  }
+  
+  // Generate a 'config' string from the supplied configuration headers:
+  char* base64PackedHeaders
+    = generateVorbisOrTheoraConfigStr(identificationHeader, identificationHeaderSize,
+				      commentHeader, commentHeaderSize,
+				      setupHeader, setupHeaderSize,
+				      identField);
+  if (base64PackedHeaders == NULL) return;
+  
+  // Then use this 'config' string to construct our "a=fmtp:" SDP line:
+  unsigned fmtpSDPLineMaxSize = 50 + strlen(base64PackedHeaders); // 50 => more than enough space
+  fFmtpSDPLine = new char[fmtpSDPLineMaxSize];
+  sprintf(fFmtpSDPLine, "a=fmtp:%d configuration=%s\r\n", rtpPayloadType(), base64PackedHeaders);
+  delete[] base64PackedHeaders;
+}
+
+VorbisAudioRTPSink::~VorbisAudioRTPSink() {
+  delete[] fFmtpSDPLine;
+}
+
+char const* VorbisAudioRTPSink::auxSDPLine() {
+  return fFmtpSDPLine;
+}
+
+void VorbisAudioRTPSink
+::doSpecialFrameHandling(unsigned fragmentationOffset,
+			 unsigned char* frameStart,
+			 unsigned numBytesInFrame,
+			 struct timeval framePresentationTime,
+			 unsigned numRemainingBytes) {
+  // Set the 4-byte "payload header", as defined in RFC 5215, section 2.2:
+  u_int8_t header[4];
+
+  // The first three bytes of the header are our "Ident":
+  header[0] = fIdent>>16; header[1] = fIdent>>8; header[2] = fIdent;
+
+  // The final byte contains the "F", "VDT", and "numPkts" fields:
+  u_int8_t F; // Fragment type
+  if (numRemainingBytes > 0) {
+    if (fragmentationOffset > 0) {
+      F = 2<<6; // continuation fragment
+    } else {
+      F = 1<<6; // start fragment
+    }
+  } else {
+    if (fragmentationOffset > 0) {
+      F = 3<<6; // end fragment
+    } else {
+      F = 0<<6; // not fragmented
+    }
+  }
+  u_int8_t const VDT = 0<<4; // Vorbis Data Type (always a "Raw Vorbis payload")
+  u_int8_t numPkts = F == 0 ? (numFramesUsedSoFar() + 1): 0; // set to 0 when we're a fragment
+  header[3] = F|VDT|numPkts;
+
+  setSpecialHeaderBytes(header, sizeof header);
+
+  // There's also a 2-byte 'frame-specific' header: The length of the Vorbis data:
+  u_int8_t frameSpecificHeader[2];
+  frameSpecificHeader[0] = numBytesInFrame>>8;
+  frameSpecificHeader[1] = numBytesInFrame;
+  setFrameSpecificHeaderBytes(frameSpecificHeader, 2);
+
+  // Important: Also call our base class's doSpecialFrameHandling(),
+  // to set the packet's timestamp:
+  MultiFramedRTPSink::doSpecialFrameHandling(fragmentationOffset,
+					     frameStart, numBytesInFrame,
+					     framePresentationTime,
+					     numRemainingBytes);
+}
+
+Boolean VorbisAudioRTPSink::frameCanAppearAfterPacketStart(unsigned char const* /*frameStart*/,
+							   unsigned /*numBytesInFrame*/) const {
+  // We allow more than one frame to be packed into an outgoing RTP packet, but no more than 15:
+  return numFramesUsedSoFar() <= 15;
+}
+
+unsigned VorbisAudioRTPSink::specialHeaderSize() const {
+  return 4;
+}
+
+unsigned VorbisAudioRTPSink::frameSpecificHeaderSize() const {
+  return 2;
+}
+
+
+////////// generateVorbisOrTheoraConfigStr() implementation //////////
+
+char* generateVorbisOrTheoraConfigStr(u_int8_t* identificationHeader, unsigned identificationHeaderSize,
+                                      u_int8_t* commentHeader, unsigned commentHeaderSize,
+                                      u_int8_t* setupHeader, unsigned setupHeaderSize,
+                                      u_int32_t identField) {
+  // First, count how many headers (<=3) are included, and how many bytes will be used
+  // to encode these headers' sizes:
+  unsigned numHeaders = 0;
+  unsigned sizeSize[2]; // The number of bytes used to encode the lengths of the first two headers (but not the length of the 3rd)
+  sizeSize[0] = sizeSize[1] = 0;
+  if (identificationHeaderSize > 0) {
+    sizeSize[numHeaders++] = identificationHeaderSize < 128 ? 1 : identificationHeaderSize < 16384 ? 2 : 3;
+  }
+  if (commentHeaderSize > 0) {
+    sizeSize[numHeaders++] = commentHeaderSize < 128 ? 1 : commentHeaderSize < 16384 ? 2 : 3;
+  }
+  if (setupHeaderSize > 0) {
+    ++numHeaders;
+  } else {
+    sizeSize[1] = 0; // We have at most two headers, so the second one's length isn't encoded
+  }
+  if (numHeaders == 0) return NULL; // With no headers, we can't set up a configuration
+  if (numHeaders == 1) sizeSize[0] = 0; // With only one header, its length isn't encoded
+
+  // Then figure out the size of the packed configuration headers, and allocate space for this:
+  unsigned length = identificationHeaderSize + commentHeaderSize + setupHeaderSize;
+      // The "length" field in the packed headers
+  if (length > (unsigned)0xFFFF) return NULL; // too big for a 16-bit field; we can't handle this
+  unsigned packedHeadersSize
+    = 4 // "Number of packed headers" field
+    + 3 // "ident" field
+    + 2 // "length" field
+    + 1 // "n. of headers" field
+    + sizeSize[0] + sizeSize[1] // "length1" and "length2" (if present) fields
+    + length;
+  u_int8_t* packedHeaders = new u_int8_t[packedHeadersSize];
+  if (packedHeaders == NULL) return NULL;
+
+  // Fill in the 'packed headers':
+  u_int8_t* p = packedHeaders;
+  *p++ = 0; *p++ = 0; *p++ = 0; *p++ = 1; // "Number of packed headers": 1
+  *p++ = identField>>16; *p++ = identField>>8; *p++ = identField; // "Ident" (24 bits)
+  *p++ = length>>8; *p++ = length; // "length" (16 bits)
+  *p++ = numHeaders-1; // "n. of headers"
+  if (numHeaders > 1) {
+    // Fill in the "length1" header:
+    unsigned length1 = identificationHeaderSize > 0 ? identificationHeaderSize : commentHeaderSize;
+    if (length1 >= 16384) {
+      *p++ = 0x80; // flag, but no more, because we know length1 <= 32767
+    }
+    if (length1 >= 128) {
+      *p++ = 0x80|((length1&0x3F80)>>7); // flag + the second 7 bits
+    }
+    *p++ = length1&0x7F; // the low 7 bits
+
+    if (numHeaders > 2) { // numHeaders == 3
+      // Fill in the "length2" header (for the 'Comment' header):
+      unsigned length2 = commentHeaderSize;
+      if (length2 >= 16384) {
+	*p++ = 0x80; // flag, but no more, because we know length2 <= 32767
+      }
+      if (length2 >= 128) {
+	*p++ = 0x80|((length2&0x3F80)>>7); // flag + the second 7 bits
+      }
+      *p++ = length2&0x7F; // the low 7 bits
+    }
+  }
+  // Copy each header:
+  if (identificationHeader != NULL) memmove(p, identificationHeader, identificationHeaderSize); p += identificationHeaderSize;
+  if (commentHeader != NULL) memmove(p, commentHeader, commentHeaderSize); p += commentHeaderSize;
+  if (setupHeader != NULL) memmove(p, setupHeader, setupHeaderSize);
+  
+  // Having set up the 'packed configuration headers', Base-64-encode this, for our result:
+  char* base64PackedHeaders = base64Encode((char const*)packedHeaders, packedHeadersSize);
+  delete[] packedHeaders;
+  
+  return base64PackedHeaders;
+}
diff --git a/liveMedia/VorbisAudioRTPSource.cpp b/liveMedia/VorbisAudioRTPSource.cpp
new file mode 100644
index 0000000..aa0e7e9
--- /dev/null
+++ b/liveMedia/VorbisAudioRTPSource.cpp
@@ -0,0 +1,197 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Vorbis Audio RTP Sources
+// Implementation
+
+#include "VorbisAudioRTPSource.hh"
+#include "Base64.hh"
+
+////////// VorbisBufferedPacket and VorbisBufferedPacketFactory //////////
+
+class VorbisBufferedPacket: public BufferedPacket {
+public:
+  VorbisBufferedPacket();
+  virtual ~VorbisBufferedPacket();
+
+private: // redefined virtual functions
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+					 unsigned dataSize);
+};
+
+class VorbisBufferedPacketFactory: public BufferedPacketFactory {
+private: // redefined virtual functions
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+
+///////// VorbisAudioRTPSource implementation ////////
+
+VorbisAudioRTPSource*
+VorbisAudioRTPSource::createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				unsigned char rtpPayloadFormat,
+				unsigned rtpTimestampFrequency) {
+  return new VorbisAudioRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency);
+}
+
+VorbisAudioRTPSource
+::VorbisAudioRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     unsigned rtpTimestampFrequency)
+  : MultiFramedRTPSource(env, RTPgs, rtpPayloadFormat, rtpTimestampFrequency,
+			 new VorbisBufferedPacketFactory),
+    fCurPacketIdent(0) {
+}
+
+VorbisAudioRTPSource::~VorbisAudioRTPSource() {
+}
+
+Boolean VorbisAudioRTPSource
+::processSpecialHeader(BufferedPacket* packet,
+                       unsigned& resultSpecialHeaderSize) {
+  unsigned char* headerStart = packet->data();
+  unsigned packetSize = packet->dataSize();
+
+  resultSpecialHeaderSize = 4;
+  if (packetSize < resultSpecialHeaderSize) return False; // packet was too small
+
+  // The first 3 bytes of the header are the "Ident" field:
+  fCurPacketIdent = (headerStart[0]<<16) | (headerStart[1]<<8) | headerStart[2];
+
+  // The 4th byte is F|VDT|numPkts.
+  // Reject any packet with VDT == 3:
+  if ((headerStart[3]&0x30) == 0x30) return False;
+
+  u_int8_t F = headerStart[3]>>6;
+  fCurrentPacketBeginsFrame = F <= 1; // "Not Fragmented" or "Start Fragment"
+  fCurrentPacketCompletesFrame = F == 0 || F == 3; // "Not Fragmented" or "End Fragment"
+
+  return True;
+}
+
+char const* VorbisAudioRTPSource::MIMEtype() const {
+  return "audio/VORBIS";
+}
+
+
+////////// VorbisBufferedPacket and VorbisBufferedPacketFactory implementation //////////
+
+VorbisBufferedPacket::VorbisBufferedPacket() {
+}
+
+VorbisBufferedPacket::~VorbisBufferedPacket() {
+}
+
+unsigned VorbisBufferedPacket
+::nextEnclosedFrameSize(unsigned char*& framePtr, unsigned dataSize) {
+  if (dataSize < 2) {
+    // There's not enough space for a 2-byte header.  TARFU!  Just return the data that's left:
+    return dataSize;
+  }
+
+  unsigned frameSize = (framePtr[0]<<8) | framePtr[1];
+  framePtr += 2;
+  if (frameSize > dataSize - 2) return dataSize - 2; // inconsistent frame size => just return all the data that's left
+
+  return frameSize;
+}
+
+BufferedPacket* VorbisBufferedPacketFactory
+::createNewPacket(MultiFramedRTPSource* /*ourSource*/) {
+  return new VorbisBufferedPacket();
+}
+
+
+////////// parseVorbisOrTheoraConfigStr() implementation //////////
+
+#define ADVANCE(n) do { p += (n); rem -= (n); } while (0)
+#define GET_ENCODED_VAL(n) do { u_int8_t byte; n = 0; do { if (rem == 0) break; byte = *p; n = (n*128) + (byte&0x7F); ADVANCE(1); } while (byte&0x80); } while (0); if (rem == 0) break
+
+void parseVorbisOrTheoraConfigStr(char const* configStr,
+                                  u_int8_t*& identificationHdr, unsigned& identificationHdrSize,
+                                  u_int8_t*& commentHdr, unsigned& commentHdrSize,
+                                  u_int8_t*& setupHdr, unsigned& setupHdrSize,
+				  u_int32_t& identField) {
+  identificationHdr = commentHdr = setupHdr = NULL; // default values, if an error occur
+  identificationHdrSize = commentHdrSize = setupHdrSize = 0; // ditto
+  identField = 0; // ditto
+
+  // Begin by Base64-decoding the configuration string:
+  unsigned configDataSize;
+  u_int8_t* configData = base64Decode(configStr, configDataSize);
+  u_int8_t* p = configData;
+  unsigned rem = configDataSize;
+
+  do {
+    if (rem < 4) break;
+    u_int32_t numPackedHeaders = (p[0]<<24)|(p[1]<<16)|(p[2]<<8)|p[3]; ADVANCE(4);
+    if (numPackedHeaders == 0) break;
+
+    // Use the first 'packed header' only.
+    if (rem < 3) break;
+    identField = (p[0]<<16)|(p[1]<<8)|p[2]; ADVANCE(3);
+
+    if (rem < 2) break;
+    u_int16_t length = (p[0]<<8)|p[1]; ADVANCE(2);
+
+    unsigned numHeaders;
+    GET_ENCODED_VAL(numHeaders);
+
+    Boolean success = False;
+    for (unsigned i = 0; i < numHeaders+1 && i < 3; ++i) {
+      success = False;
+      unsigned headerSize;
+      if (i < numHeaders) {
+        // The header size is encoded:
+	GET_ENCODED_VAL(headerSize);
+        if (headerSize > length) break;
+        length -= headerSize;
+      } else {
+	// The last header is implicit:
+        headerSize = length;
+      }
+
+      // Allocate space for the header bytes; we'll fill it in later
+      if (i == 0) {
+	identificationHdrSize = headerSize;
+        identificationHdr = new u_int8_t[identificationHdrSize];
+      } else if (i == 1) {
+        commentHdrSize = headerSize;
+	commentHdr = new u_int8_t[commentHdrSize];
+      } else { // i == 2
+        setupHdrSize = headerSize;
+        setupHdr = new u_int8_t[setupHdrSize];
+      }
+
+      success = True;
+    }
+    if (!success) break;
+
+    // Copy the remaining config bytes into the appropriate 'header' buffers:
+    if (identificationHdr != NULL) {
+      memmove(identificationHdr, p, identificationHdrSize); ADVANCE(identificationHdrSize);
+      if (commentHdr != NULL) {
+        memmove(commentHdr, p, commentHdrSize); ADVANCE(commentHdrSize);
+	if (setupHdr != NULL) {
+          memmove(setupHdr, p, setupHdrSize); ADVANCE(setupHdrSize);
+        }
+      }
+    }
+  } while (0);
+
+  delete[] configData;
+}
diff --git a/liveMedia/WAVAudioFileServerMediaSubsession.cpp b/liveMedia/WAVAudioFileServerMediaSubsession.cpp
new file mode 100644
index 0000000..849db42
--- /dev/null
+++ b/liveMedia/WAVAudioFileServerMediaSubsession.cpp
@@ -0,0 +1,228 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an WAV audio file.
+// Implementation
+
+#include "WAVAudioFileServerMediaSubsession.hh"
+#include "WAVAudioFileSource.hh"
+#include "uLawAudioFilter.hh"
+#include "SimpleRTPSink.hh"
+
+WAVAudioFileServerMediaSubsession* WAVAudioFileServerMediaSubsession
+::createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource,
+	    Boolean convertToULaw) {
+  return new WAVAudioFileServerMediaSubsession(env, fileName,
+					       reuseFirstSource, convertToULaw);
+}
+
+WAVAudioFileServerMediaSubsession
+::WAVAudioFileServerMediaSubsession(UsageEnvironment& env, char const* fileName,
+				    Boolean reuseFirstSource, Boolean convertToULaw)
+  : FileServerMediaSubsession(env, fileName, reuseFirstSource),
+    fConvertToULaw(convertToULaw) {
+}
+
+WAVAudioFileServerMediaSubsession
+::~WAVAudioFileServerMediaSubsession() {
+}
+
+void WAVAudioFileServerMediaSubsession
+::seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes) {
+  WAVAudioFileSource* wavSource;
+  if (fBitsPerSample > 8) {
+    // "inputSource" is a filter; its input source is the original WAV file source:
+    wavSource = (WAVAudioFileSource*)(((FramedFilter*)inputSource)->inputSource());
+  } else {
+    // "inputSource" is the original WAV file source:
+    wavSource = (WAVAudioFileSource*)inputSource;
+  }
+
+  unsigned seekSampleNumber = (unsigned)(seekNPT*fSamplingFrequency);
+  unsigned seekByteNumber = seekSampleNumber*((fNumChannels*fBitsPerSample)/8);
+
+  wavSource->seekToPCMByte(seekByteNumber);
+
+  setStreamSourceDuration(inputSource, streamDuration, numBytes);
+}
+
+void WAVAudioFileServerMediaSubsession
+::setStreamSourceDuration(FramedSource* inputSource, double streamDuration, u_int64_t& numBytes) {
+  WAVAudioFileSource* wavSource;
+  if (fBitsPerSample > 8) {
+    // "inputSource" is a filter; its input source is the original WAV file source:
+    wavSource = (WAVAudioFileSource*)(((FramedFilter*)inputSource)->inputSource());
+  } else {
+    // "inputSource" is the original WAV file source:
+    wavSource = (WAVAudioFileSource*)inputSource;
+  }
+
+  unsigned numDurationSamples = (unsigned)(streamDuration*fSamplingFrequency);
+  unsigned numDurationBytes = numDurationSamples*((fNumChannels*fBitsPerSample)/8);
+  numBytes = (u_int64_t)numDurationBytes;
+
+  wavSource->limitNumBytesToStream(numDurationBytes);
+}
+
+void WAVAudioFileServerMediaSubsession
+::setStreamSourceScale(FramedSource* inputSource, float scale) {
+  int iScale = (int)scale;
+  WAVAudioFileSource* wavSource;
+  if (fBitsPerSample > 8) {
+    // "inputSource" is a filter; its input source is the original WAV file source:
+    wavSource = (WAVAudioFileSource*)(((FramedFilter*)inputSource)->inputSource());
+  } else {
+    // "inputSource" is the original WAV file source:
+    wavSource = (WAVAudioFileSource*)inputSource;
+  }
+
+  wavSource->setScaleFactor(iScale);
+}
+
+FramedSource* WAVAudioFileServerMediaSubsession
+::createNewStreamSource(unsigned /*clientSessionId*/, unsigned& estBitrate) {
+  FramedSource* resultSource = NULL;
+  do {
+    WAVAudioFileSource* wavSource = WAVAudioFileSource::createNew(envir(), fFileName);
+    if (wavSource == NULL) break;
+
+    // Get attributes of the audio source:
+
+    fAudioFormat = wavSource->getAudioFormat();
+    fBitsPerSample = wavSource->bitsPerSample();
+    // We handle only 4,8,16,20,24 bits-per-sample audio:
+    if (fBitsPerSample%4 != 0 || fBitsPerSample < 4 || fBitsPerSample > 24 || fBitsPerSample == 12) {
+      envir() << "The input file contains " << fBitsPerSample << " bit-per-sample audio, which we don't handle\n";
+      break;
+    }
+    fSamplingFrequency = wavSource->samplingFrequency();
+    fNumChannels = wavSource->numChannels();
+    unsigned bitsPerSecond = fSamplingFrequency*fBitsPerSample*fNumChannels;
+
+    fFileDuration = (float)((8.0*wavSource->numPCMBytes())/(fSamplingFrequency*fNumChannels*fBitsPerSample));
+
+    // Add in any filter necessary to transform the data prior to streaming:
+    resultSource = wavSource; // by default
+    if (fAudioFormat == WA_PCM) {
+      if (fBitsPerSample == 16) {
+	// Note that samples in the WAV audio file are in little-endian order.
+	if (fConvertToULaw) {
+	  // Add a filter that converts from raw 16-bit PCM audio to 8-bit u-law audio:
+	  resultSource = uLawFromPCMAudioSource::createNew(envir(), wavSource, 1/*little-endian*/);
+	  bitsPerSecond /= 2;
+	} else {
+	  // Add a filter that converts from little-endian to network (big-endian) order:
+	  resultSource = EndianSwap16::createNew(envir(), wavSource);
+	}
+      } else if (fBitsPerSample == 20 || fBitsPerSample == 24) {
+	// Add a filter that converts from little-endian to network (big-endian) order:
+	resultSource = EndianSwap24::createNew(envir(), wavSource);
+      }
+    }
+
+    estBitrate = (bitsPerSecond+500)/1000; // kbps
+    return resultSource;
+  } while (0);
+
+  // An error occurred:
+  Medium::close(resultSource);
+  return NULL;
+}
+
+RTPSink* WAVAudioFileServerMediaSubsession
+::createNewRTPSink(Groupsock* rtpGroupsock,
+		   unsigned char rtpPayloadTypeIfDynamic,
+		   FramedSource* /*inputSource*/) {
+  do {
+    char const* mimeType;
+    unsigned char payloadFormatCode = rtpPayloadTypeIfDynamic; // by default, unless a static RTP payload type can be used
+    if (fAudioFormat == WA_PCM) {
+      if (fBitsPerSample == 16) {
+	if (fConvertToULaw) {
+	  mimeType = "PCMU";
+	  if (fSamplingFrequency == 8000 && fNumChannels == 1) {
+	    payloadFormatCode = 0; // a static RTP payload type
+	  }
+	} else {
+	  mimeType = "L16";
+	  if (fSamplingFrequency == 44100 && fNumChannels == 2) {
+	    payloadFormatCode = 10; // a static RTP payload type
+	  } else if (fSamplingFrequency == 44100 && fNumChannels == 1) {
+	    payloadFormatCode = 11; // a static RTP payload type
+	  }
+	}
+      } else if (fBitsPerSample == 20) {
+	mimeType = "L20";
+      } else if (fBitsPerSample == 24) {
+	mimeType = "L24";
+      } else { // fBitsPerSample == 8 (we assume that fBitsPerSample == 4 is only for WA_IMA_ADPCM)
+	mimeType = "L8";
+      }
+    } else if (fAudioFormat == WA_PCMU) {
+      mimeType = "PCMU";
+      if (fSamplingFrequency == 8000 && fNumChannels == 1) {
+	payloadFormatCode = 0; // a static RTP payload type
+      }
+    } else if (fAudioFormat == WA_PCMA) {
+      mimeType = "PCMA";
+      if (fSamplingFrequency == 8000 && fNumChannels == 1) {
+	payloadFormatCode = 8; // a static RTP payload type
+      }
+    } else if (fAudioFormat == WA_IMA_ADPCM) {
+      mimeType = "DVI4";
+      // Use a static payload type, if one is defined:
+      if (fNumChannels == 1) {
+	if (fSamplingFrequency == 8000) {
+	  payloadFormatCode = 5; // a static RTP payload type
+	} else if (fSamplingFrequency == 16000) {
+	  payloadFormatCode = 6; // a static RTP payload type
+	} else if (fSamplingFrequency == 11025) {
+	  payloadFormatCode = 16; // a static RTP payload type
+	} else if (fSamplingFrequency == 22050) {
+	  payloadFormatCode = 17; // a static RTP payload type
+	}
+      }
+    } else { //unknown format
+      break;
+    }
+
+    return SimpleRTPSink::createNew(envir(), rtpGroupsock,
+				    payloadFormatCode, fSamplingFrequency,
+				    "audio", mimeType, fNumChannels);
+  } while (0);
+
+  // An error occurred:
+  return NULL;
+}
+
+void WAVAudioFileServerMediaSubsession::testScaleFactor(float& scale) {
+  if (fFileDuration <= 0.0) {
+    // The file is non-seekable, so is probably a live input source.
+    // We don't support scale factors other than 1
+    scale = 1;
+  } else {
+    // We support any integral scale, other than 0
+    int iScale = scale < 0.0 ? (int)(scale - 0.5) : (int)(scale + 0.5); // round
+    if (iScale == 0) iScale = 1;
+    scale = (float)iScale;
+  }
+}
+
+float WAVAudioFileServerMediaSubsession::duration() const {
+  return fFileDuration;
+}
diff --git a/liveMedia/WAVAudioFileSource.cpp b/liveMedia/WAVAudioFileSource.cpp
new file mode 100644
index 0000000..ae51820
--- /dev/null
+++ b/liveMedia/WAVAudioFileSource.cpp
@@ -0,0 +1,353 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A WAV audio file source
+// Implementation
+
+#include "WAVAudioFileSource.hh"
+#include "InputFile.hh"
+#include "GroupsockHelper.hh"
+
+////////// WAVAudioFileSource //////////
+
+WAVAudioFileSource*
+WAVAudioFileSource::createNew(UsageEnvironment& env, char const* fileName) {
+  do {
+    FILE* fid = OpenInputFile(env, fileName);
+    if (fid == NULL) break;
+
+    WAVAudioFileSource* newSource = new WAVAudioFileSource(env, fid);
+    if (newSource != NULL && newSource->bitsPerSample() == 0) {
+      // The WAV file header was apparently invalid.
+      Medium::close(newSource);
+      break;
+    }
+
+    newSource->fFileSize = (unsigned)GetFileSize(fileName, fid);
+
+    return newSource;
+  } while (0);
+
+  return NULL;
+}
+
+unsigned WAVAudioFileSource::numPCMBytes() const {
+  if (fFileSize < fWAVHeaderSize) return 0;
+  return fFileSize - fWAVHeaderSize;
+}
+
+void WAVAudioFileSource::setScaleFactor(int scale) {
+  if (!fFidIsSeekable) return; // we can't do 'trick play' operations on non-seekable files
+
+  fScaleFactor = scale;
+
+  if (fScaleFactor < 0 && TellFile64(fFid) > 0) {
+    // Because we're reading backwards, seek back one sample, to ensure that
+    // (i)  we start reading the last sample before the start point, and
+    // (ii) we don't hit end-of-file on the first read.
+    int bytesPerSample = (fNumChannels*fBitsPerSample)/8;
+    if (bytesPerSample == 0) bytesPerSample = 1;
+    SeekFile64(fFid, -bytesPerSample, SEEK_CUR);
+  }
+}
+
+void WAVAudioFileSource::seekToPCMByte(unsigned byteNumber) {
+  byteNumber += fWAVHeaderSize;
+  if (byteNumber > fFileSize) byteNumber = fFileSize;
+
+  SeekFile64(fFid, byteNumber, SEEK_SET);
+}
+
+void WAVAudioFileSource::limitNumBytesToStream(unsigned numBytesToStream) {
+  fNumBytesToStream = numBytesToStream;
+  fLimitNumBytesToStream = fNumBytesToStream > 0;
+}
+
+unsigned char WAVAudioFileSource::getAudioFormat() {
+  return fAudioFormat;
+}
+
+
+#define nextc fgetc(fid)
+
+static Boolean get4Bytes(FILE* fid, u_int32_t& result) { // little-endian
+  int c0, c1, c2, c3;
+  if ((c0 = nextc) == EOF || (c1 = nextc) == EOF ||
+      (c2 = nextc) == EOF || (c3 = nextc) == EOF) return False;
+  result = (c3<<24)|(c2<<16)|(c1<<8)|c0;
+  return True;
+}
+
+static Boolean get2Bytes(FILE* fid, u_int16_t& result) {//little-endian
+  int c0, c1;
+  if ((c0 = nextc) == EOF || (c1 = nextc) == EOF) return False;
+  result = (c1<<8)|c0;
+  return True;
+}
+
+static Boolean skipBytes(FILE* fid, int num) {
+  while (num-- > 0) {
+    if (nextc == EOF) return False;
+  }
+  return True;
+}
+
+WAVAudioFileSource::WAVAudioFileSource(UsageEnvironment& env, FILE* fid)
+  : AudioInputDevice(env, 0, 0, 0, 0)/* set the real parameters later */,
+    fFid(fid), fFidIsSeekable(False), fLastPlayTime(0), fHaveStartedReading(False), fWAVHeaderSize(0), fFileSize(0),
+    fScaleFactor(1), fLimitNumBytesToStream(False), fNumBytesToStream(0), fAudioFormat(WA_UNKNOWN) {
+  // Check the WAV file header for validity.
+  // Note: The following web pages contain info about the WAV format:
+  // http://www.ringthis.com/dev/wave_format.htm
+  // http://www.lightlink.com/tjweber/StripWav/Canon.html
+  // http://www.onicos.com/staff/iz/formats/wav.html
+
+  Boolean success = False; // until we learn otherwise
+  do {
+    // RIFF Chunk:
+    if (nextc != 'R' || nextc != 'I' || nextc != 'F' || nextc != 'F') break;
+    if (!skipBytes(fid, 4)) break;
+    if (nextc != 'W' || nextc != 'A' || nextc != 'V' || nextc != 'E') break;
+
+    // Skip over any chunk that's not a FORMAT ('fmt ') chunk:
+    u_int32_t tmp;
+    if (!get4Bytes(fid, tmp)) break;
+    while (tmp != 0x20746d66/*'fmt ', little-endian*/) {
+      // Skip this chunk:
+      u_int32_t chunkLength;
+      if (!get4Bytes(fid, chunkLength)) break;
+      if (!skipBytes(fid, chunkLength)) break;
+      if (!get4Bytes(fid, tmp)) break;
+    }
+
+    // FORMAT Chunk (the 4-byte header code has already been parsed):
+    unsigned formatLength;
+    if (!get4Bytes(fid, formatLength)) break;
+    unsigned short audioFormat;
+    if (!get2Bytes(fid, audioFormat)) break;
+
+    fAudioFormat = (unsigned char)audioFormat;
+    if (fAudioFormat != WA_PCM && fAudioFormat != WA_PCMA && fAudioFormat != WA_PCMU && fAudioFormat != WA_IMA_ADPCM) {
+      // It's a format that we don't (yet) understand
+      env.setResultMsg("Audio format is not one that we handle (PCM/PCMU/PCMA or IMA ADPCM)");
+      break;
+    }
+    unsigned short numChannels;
+    if (!get2Bytes(fid, numChannels)) break;
+    fNumChannels = (unsigned char)numChannels;
+    if (fNumChannels < 1 || fNumChannels > 2) { // invalid # channels
+      char errMsg[100];
+      sprintf(errMsg, "Bad # channels: %d", fNumChannels);
+      env.setResultMsg(errMsg);
+      break;
+    }
+    if (!get4Bytes(fid, fSamplingFrequency)) break;
+    if (fSamplingFrequency == 0) {
+      env.setResultMsg("Bad sampling frequency: 0");
+      break;
+    }
+    if (!skipBytes(fid, 6)) break; // "nAvgBytesPerSec" (4 bytes) + "nBlockAlign" (2 bytes)
+    unsigned short bitsPerSample;
+    if (!get2Bytes(fid, bitsPerSample)) break;
+    fBitsPerSample = (unsigned char)bitsPerSample;
+    if (fBitsPerSample == 0) {
+      env.setResultMsg("Bad bits-per-sample: 0");
+      break;
+    }
+    if (!skipBytes(fid, formatLength - 16)) break;
+
+    // FACT chunk (optional):
+    int c = nextc;
+    if (c == 'f') {
+      if (nextc != 'a' || nextc != 'c' || nextc != 't') break;
+      unsigned factLength;
+      if (!get4Bytes(fid, factLength)) break;
+      if (!skipBytes(fid, factLength)) break;
+      c = nextc;
+    }
+
+    // EYRE chunk (optional):
+    if (c == 'e') {
+      if (nextc != 'y' || nextc != 'r' || nextc != 'e') break;
+      unsigned eyreLength;
+      if (!get4Bytes(fid, eyreLength)) break;
+      if (!skipBytes(fid, eyreLength)) break;
+      c = nextc;
+    }
+
+    // DATA Chunk:
+    if (c != 'd' || nextc != 'a' || nextc != 't' || nextc != 'a') break;
+    if (!skipBytes(fid, 4)) break;
+
+    // The header is good; the remaining data are the sample bytes.
+    fWAVHeaderSize = (unsigned)TellFile64(fid);
+    success = True;
+  } while (0);
+
+  if (!success) {
+    env.setResultMsg("Bad WAV file format");
+    // Set "fBitsPerSample" to zero, to indicate failure:
+    fBitsPerSample = 0;
+    return;
+  }
+
+  fPlayTimePerSample = 1e6/(double)fSamplingFrequency;
+
+  // Although PCM is a sample-based format, we group samples into
+  // 'frames' for efficient delivery to clients.  Set up our preferred
+  // frame size to be close to 20 ms, if possible, but always no greater
+  // than 1400 bytes (to ensure that it will fit in a single RTP packet)
+  unsigned maxSamplesPerFrame = (1400*8)/(fNumChannels*fBitsPerSample);
+  unsigned desiredSamplesPerFrame = (unsigned)(0.02*fSamplingFrequency);
+  unsigned samplesPerFrame = desiredSamplesPerFrame < maxSamplesPerFrame ? desiredSamplesPerFrame : maxSamplesPerFrame;
+  fPreferredFrameSize = (samplesPerFrame*fNumChannels*fBitsPerSample)/8;
+
+  fFidIsSeekable = FileIsSeekable(fFid);
+#ifndef READ_FROM_FILES_SYNCHRONOUSLY
+  // Now that we've finished reading the WAV header, all future reads (of audio samples) from the file will be asynchronous:
+  makeSocketNonBlocking(fileno(fFid));
+#endif
+}
+
+WAVAudioFileSource::~WAVAudioFileSource() {
+  if (fFid == NULL) return;
+
+#ifndef READ_FROM_FILES_SYNCHRONOUSLY
+  envir().taskScheduler().turnOffBackgroundReadHandling(fileno(fFid));
+#endif
+
+  CloseInputFile(fFid);
+}
+
+void WAVAudioFileSource::doGetNextFrame() {
+  if (feof(fFid) || ferror(fFid) || (fLimitNumBytesToStream && fNumBytesToStream == 0)) {
+    handleClosure();
+    return;
+  }
+
+  fFrameSize = 0; // until it's set later
+#ifdef READ_FROM_FILES_SYNCHRONOUSLY
+  doReadFromFile();
+#else
+  if (!fHaveStartedReading) {
+    // Await readable data from the file:
+    envir().taskScheduler().turnOnBackgroundReadHandling(fileno(fFid),
+							 (TaskScheduler::BackgroundHandlerProc*)&fileReadableHandler, this);
+    fHaveStartedReading = True;
+  }
+#endif
+}
+
+void WAVAudioFileSource::doStopGettingFrames() {
+  envir().taskScheduler().unscheduleDelayedTask(nextTask());
+#ifndef READ_FROM_FILES_SYNCHRONOUSLY
+  envir().taskScheduler().turnOffBackgroundReadHandling(fileno(fFid));
+  fHaveStartedReading = False;
+#endif
+}
+
+void WAVAudioFileSource::fileReadableHandler(WAVAudioFileSource* source, int /*mask*/) {
+  if (!source->isCurrentlyAwaitingData()) {
+    source->doStopGettingFrames(); // we're not ready for the data yet
+    return;
+  }
+  source->doReadFromFile();
+}
+
+void WAVAudioFileSource::doReadFromFile() {
+  // Try to read as many bytes as will fit in the buffer provided (or "fPreferredFrameSize" if less)
+  if (fLimitNumBytesToStream && fNumBytesToStream < fMaxSize) {
+    fMaxSize = fNumBytesToStream;
+  }
+  if (fPreferredFrameSize < fMaxSize) {
+    fMaxSize = fPreferredFrameSize;
+  }
+  unsigned bytesPerSample = (fNumChannels*fBitsPerSample)/8;
+  if (bytesPerSample == 0) bytesPerSample = 1; // because we can't read less than a byte at a time
+
+  // For 'trick play', read one sample at a time; otherwise (normal case) read samples in bulk:
+  unsigned bytesToRead = fScaleFactor == 1 ? fMaxSize - fMaxSize%bytesPerSample : bytesPerSample;
+  unsigned numBytesRead;
+  while (1) { // loop for 'trick play' only
+#ifdef READ_FROM_FILES_SYNCHRONOUSLY
+    numBytesRead = fread(fTo, 1, bytesToRead, fFid);
+#else
+    if (fFidIsSeekable) {
+      numBytesRead = fread(fTo, 1, bytesToRead, fFid);
+    } else {
+      // For non-seekable files (e.g., pipes), call "read()" rather than "fread()", to ensure that the read doesn't block:
+      numBytesRead = read(fileno(fFid), fTo, bytesToRead);
+    }
+#endif
+    if (numBytesRead == 0) {
+     handleClosure();
+      return;
+    }
+    fFrameSize += numBytesRead;
+    fTo += numBytesRead;
+    fMaxSize -= numBytesRead;
+    fNumBytesToStream -= numBytesRead;
+
+    // If we did an asynchronous read, and didn't read an integral number of samples, then we need to wait for another read:
+#ifndef READ_FROM_FILES_SYNCHRONOUSLY
+    if (fFrameSize%bytesPerSample > 0) return;
+#endif
+    
+    // If we're doing 'trick play', then seek to the appropriate place for reading the next sample,
+    // and keep reading until we fill the provided buffer:
+    if (fScaleFactor != 1) {
+      SeekFile64(fFid, (fScaleFactor-1)*bytesPerSample, SEEK_CUR);
+      if (fMaxSize < bytesPerSample) break;
+    } else {
+      break; // from the loop (normal case)
+    }
+  }
+
+  // Set the 'presentation time' and 'duration' of this frame:
+  if (fPresentationTime.tv_sec == 0 && fPresentationTime.tv_usec == 0) {
+    // This is the first frame, so use the current time:
+    gettimeofday(&fPresentationTime, NULL);
+  } else {
+    // Increment by the play time of the previous data:
+    unsigned uSeconds = fPresentationTime.tv_usec + fLastPlayTime;
+    fPresentationTime.tv_sec += uSeconds/1000000;
+    fPresentationTime.tv_usec = uSeconds%1000000;
+  }
+
+  // Remember the play time of this data:
+  fDurationInMicroseconds = fLastPlayTime
+    = (unsigned)((fPlayTimePerSample*fFrameSize)/bytesPerSample);
+
+  // Inform the reader that he has data:
+#ifdef READ_FROM_FILES_SYNCHRONOUSLY
+  // To avoid possible infinite recursion, we need to return to the event loop to do this:
+  nextTask() = envir().taskScheduler().scheduleDelayedTask(0,
+                                (TaskFunc*)FramedSource::afterGetting, this);
+#else
+  // Because the file read was done from the event loop, we can call the
+  // 'after getting' function directly, without risk of infinite recursion:
+  FramedSource::afterGetting(this);
+#endif
+}
+
+Boolean WAVAudioFileSource::setInputPort(int /*portIndex*/) {
+  return True;
+}
+
+double WAVAudioFileSource::getAverageLevel() const {
+  return 0.0;//##### fix this later
+}
diff --git a/liveMedia/include/AC3AudioFileServerMediaSubsession.hh b/liveMedia/include/AC3AudioFileServerMediaSubsession.hh
new file mode 100644
index 0000000..52afbc1
--- /dev/null
+++ b/liveMedia/include/AC3AudioFileServerMediaSubsession.hh
@@ -0,0 +1,48 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an AC3 audio file.
+// C++ header
+
+#ifndef _AC3_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _AC3_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+
+class AC3AudioFileServerMediaSubsession: public FileServerMediaSubsession{
+public:
+  static AC3AudioFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource);
+
+private:
+  AC3AudioFileServerMediaSubsession(UsageEnvironment& env,
+				      char const* fileName, Boolean reuseFirstSource);
+      // called only by createNew();
+  virtual ~AC3AudioFileServerMediaSubsession();
+
+private: // redefined virtual functions
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+};
+
+#endif
diff --git a/liveMedia/include/AC3AudioRTPSink.hh b/liveMedia/include/AC3AudioRTPSink.hh
new file mode 100644
index 0000000..81332c1
--- /dev/null
+++ b/liveMedia/include/AC3AudioRTPSink.hh
@@ -0,0 +1,57 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for AC3 audio
+// C++ header
+
+#ifndef _AC3_AUDIO_RTP_SINK_HH
+#define _AC3_AUDIO_RTP_SINK_HH
+
+#ifndef _AUDIO_RTP_SINK_HH
+#include "AudioRTPSink.hh"
+#endif
+
+class AC3AudioRTPSink: public AudioRTPSink {
+public:
+  static AC3AudioRTPSink* createNew(UsageEnvironment& env,
+				    Groupsock* RTPgs,
+				    u_int8_t rtpPayloadFormat,
+				    u_int32_t rtpTimestampFrequency);
+
+protected:
+  AC3AudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		  u_int8_t rtpPayloadFormat,
+		  u_int32_t rtpTimestampFrequency);
+	// called only by createNew()
+
+  virtual ~AC3AudioRTPSink();
+
+private: // redefined virtual functions:
+  virtual Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+						 unsigned numBytesInFrame) const;
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual unsigned specialHeaderSize() const;
+
+private:
+  unsigned char fTotNumFragmentsUsed; // used only if a frame gets fragmented across multiple packets
+};
+
+#endif
diff --git a/liveMedia/include/AC3AudioRTPSource.hh b/liveMedia/include/AC3AudioRTPSource.hh
new file mode 100644
index 0000000..7d962d1
--- /dev/null
+++ b/liveMedia/include/AC3AudioRTPSource.hh
@@ -0,0 +1,51 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// AC3 Audio RTP Sources
+// C++ header
+
+#ifndef _AC3_AUDIO_RTP_SOURCE_HH
+#define _AC3_AUDIO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class AC3AudioRTPSource: public MultiFramedRTPSource {
+public:
+  static AC3AudioRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency);
+
+protected:
+  virtual ~AC3AudioRTPSource();
+
+private:
+  AC3AudioRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+};
+
+#endif
diff --git a/liveMedia/include/AC3AudioStreamFramer.hh b/liveMedia/include/AC3AudioStreamFramer.hh
new file mode 100644
index 0000000..5674989
--- /dev/null
+++ b/liveMedia/include/AC3AudioStreamFramer.hh
@@ -0,0 +1,70 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an AC3 audio elementary stream into frames
+// C++ header
+
+#ifndef _AC3_AUDIO_STREAM_FRAMER_HH
+#define _AC3_AUDIO_STREAM_FRAMER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+class AC3AudioStreamFramer: public FramedFilter {
+public:
+  static AC3AudioStreamFramer*
+  createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    unsigned char streamCode = 0);
+  // If "streamCode" != 0, then we assume that there's a 1-byte code at the beginning of each chunk of data that we read from
+  // our source.  If that code is not the value we want, we discard the chunk of data.
+  // However, if "streamCode" == 0 (the default), then we don't expect this 1-byte code.
+
+  unsigned samplingRate();
+
+  void flushInput(); // called if there is a discontinuity (seeking) in the input
+
+private:
+  AC3AudioStreamFramer(UsageEnvironment& env, FramedSource* inputSource,
+		       unsigned char streamCode);
+      // called only by createNew()
+  virtual ~AC3AudioStreamFramer();
+
+  static void handleNewData(void* clientData,
+			    unsigned char* ptr, unsigned size,
+			    struct timeval presentationTime);
+  void handleNewData(unsigned char* ptr, unsigned size);
+
+  void parseNextFrame();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  struct timeval currentFramePlayTime() const;
+
+private:
+  struct timeval fNextFramePresentationTime;
+
+private: // parsing state
+  class AC3AudioStreamParser* fParser;
+  unsigned char fOurStreamCode;
+  friend class AC3AudioStreamParser; // hack
+};
+
+#endif
diff --git a/liveMedia/include/ADTSAudioFileServerMediaSubsession.hh b/liveMedia/include/ADTSAudioFileServerMediaSubsession.hh
new file mode 100644
index 0000000..47a769c
--- /dev/null
+++ b/liveMedia/include/ADTSAudioFileServerMediaSubsession.hh
@@ -0,0 +1,48 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an AAC audio file in ADTS format
+// C++ header
+
+#ifndef _ADTS_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _ADTS_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+
+class ADTSAudioFileServerMediaSubsession: public FileServerMediaSubsession{
+public:
+  static ADTSAudioFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource);
+
+protected:
+  ADTSAudioFileServerMediaSubsession(UsageEnvironment& env,
+				      char const* fileName, Boolean reuseFirstSource);
+      // called only by createNew();
+  virtual ~ADTSAudioFileServerMediaSubsession();
+
+protected: // redefined virtual functions
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+};
+
+#endif
diff --git a/liveMedia/include/ADTSAudioFileSource.hh b/liveMedia/include/ADTSAudioFileSource.hh
new file mode 100644
index 0000000..365d6cc
--- /dev/null
+++ b/liveMedia/include/ADTSAudioFileSource.hh
@@ -0,0 +1,56 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A source object for AAC audio files in ADTS format
+// C++ header
+
+#ifndef _ADTS_AUDIO_FILE_SOURCE_HH
+#define _ADTS_AUDIO_FILE_SOURCE_HH
+
+#ifndef _FRAMED_FILE_SOURCE_HH
+#include "FramedFileSource.hh"
+#endif
+
+class ADTSAudioFileSource: public FramedFileSource {
+public:
+  static ADTSAudioFileSource* createNew(UsageEnvironment& env,
+				       char const* fileName);
+
+  unsigned samplingFrequency() const { return fSamplingFrequency; }
+  unsigned numChannels() const { return fNumChannels; }
+  char const* configStr() const { return fConfigStr; }
+      // returns the 'AudioSpecificConfig' for this stream (in ASCII form)
+
+private:
+  ADTSAudioFileSource(UsageEnvironment& env, FILE* fid, u_int8_t profile,
+		      u_int8_t samplingFrequencyIndex, u_int8_t channelConfiguration);
+	// called only by createNew()
+
+  virtual ~ADTSAudioFileSource();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  unsigned fSamplingFrequency;
+  unsigned fNumChannels;
+  unsigned fuSecsPerFrame;
+  char fConfigStr[5];
+};
+
+#endif
diff --git a/liveMedia/include/AMRAudioFileServerMediaSubsession.hh b/liveMedia/include/AMRAudioFileServerMediaSubsession.hh
new file mode 100644
index 0000000..de81d28
--- /dev/null
+++ b/liveMedia/include/AMRAudioFileServerMediaSubsession.hh
@@ -0,0 +1,48 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an AMR audio file.
+// C++ header
+
+#ifndef _AMR_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _AMR_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+
+class AMRAudioFileServerMediaSubsession: public FileServerMediaSubsession{
+public:
+  static AMRAudioFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource);
+
+private:
+  AMRAudioFileServerMediaSubsession(UsageEnvironment& env,
+				      char const* fileName, Boolean reuseFirstSource);
+      // called only by createNew();
+  virtual ~AMRAudioFileServerMediaSubsession();
+
+private: // redefined virtual functions
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+};
+
+#endif
diff --git a/liveMedia/include/AMRAudioFileSink.hh b/liveMedia/include/AMRAudioFileSink.hh
new file mode 100644
index 0000000..cb0c173
--- /dev/null
+++ b/liveMedia/include/AMRAudioFileSink.hh
@@ -0,0 +1,51 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// AMR Audio File Sinks
+// C++ header
+
+#ifndef _AMR_AUDIO_FILE_SINK_HH
+#define _AMR_AUDIO_FILE_SINK_HH
+
+#ifndef _FILE_SINK_HH
+#include "FileSink.hh"
+#endif
+
+class AMRAudioFileSink: public FileSink {
+public:
+  static AMRAudioFileSink* createNew(UsageEnvironment& env, char const* fileName,
+				     unsigned bufferSize = 10000,
+				     Boolean oneFilePerFrame = False);
+  // (See "FileSink.hh" for a description of these parameters.)
+
+protected:
+  AMRAudioFileSink(UsageEnvironment& env, FILE* fid, unsigned bufferSize,
+		   char const* perFrameFileNamePrefix);
+      // called only by createNew()
+  virtual ~AMRAudioFileSink();
+
+protected: // redefined virtual functions:
+  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+  virtual void afterGettingFrame(unsigned frameSize,
+				 unsigned numTruncatedBytes,
+				 struct timeval presentationTime);
+
+protected:
+  Boolean fHaveWrittenHeader;
+};
+
+#endif
diff --git a/liveMedia/include/AMRAudioFileSource.hh b/liveMedia/include/AMRAudioFileSource.hh
new file mode 100644
index 0000000..8ab4938
--- /dev/null
+++ b/liveMedia/include/AMRAudioFileSource.hh
@@ -0,0 +1,48 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A source object for AMR audio files (as defined in RFC 4867, section 5)
+// C++ header
+
+#ifndef _AMR_AUDIO_FILE_SOURCE_HH
+#define _AMR_AUDIO_FILE_SOURCE_HH
+
+#ifndef _AMR_AUDIO_SOURCE_HH
+#include "AMRAudioSource.hh"
+#endif
+
+class AMRAudioFileSource: public AMRAudioSource {
+public:
+  static AMRAudioFileSource* createNew(UsageEnvironment& env,
+				       char const* fileName);
+
+private:
+  AMRAudioFileSource(UsageEnvironment& env, FILE* fid,
+		     Boolean isWideband, unsigned numChannels);
+	// called only by createNew()
+
+  virtual ~AMRAudioFileSource();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  FILE* fFid;
+};
+
+#endif
diff --git a/liveMedia/include/AMRAudioRTPSink.hh b/liveMedia/include/AMRAudioRTPSink.hh
new file mode 100644
index 0000000..e23da76
--- /dev/null
+++ b/liveMedia/include/AMRAudioRTPSink.hh
@@ -0,0 +1,65 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for AMR audio (RFC 4867)
+// C++ header
+
+#ifndef _AMR_AUDIO_RTP_SINK_HH
+#define _AMR_AUDIO_RTP_SINK_HH
+
+#ifndef _AUDIO_RTP_SINK_HH
+#include "AudioRTPSink.hh"
+#endif
+
+class AMRAudioRTPSink: public AudioRTPSink {
+public:
+  static AMRAudioRTPSink* createNew(UsageEnvironment& env,
+				    Groupsock* RTPgs,
+				    unsigned char rtpPayloadFormat,
+				    Boolean sourceIsWideband = False,
+				    unsigned numChannelsInSource = 1);
+
+  Boolean sourceIsWideband() const { return fSourceIsWideband; }
+
+protected:
+  AMRAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		  unsigned char rtpPayloadFormat,
+		  Boolean sourceIsWideband, unsigned numChannelsInSource);
+	// called only by createNew()
+
+  virtual ~AMRAudioRTPSink();
+
+private: // redefined virtual functions:
+  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual Boolean
+  frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+				 unsigned numBytesInFrame) const;
+
+  virtual unsigned specialHeaderSize() const;
+  virtual char const* auxSDPLine();
+
+private:
+  Boolean fSourceIsWideband;
+  char* fFmtpSDPLine;
+};
+
+#endif
diff --git a/liveMedia/include/AMRAudioRTPSource.hh b/liveMedia/include/AMRAudioRTPSource.hh
new file mode 100644
index 0000000..3ab9cd8
--- /dev/null
+++ b/liveMedia/include/AMRAudioRTPSource.hh
@@ -0,0 +1,53 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// AMR Audio RTP Sources (RFC 4867)
+// C++ header
+
+#ifndef _AMR_AUDIO_RTP_SOURCE_HH
+#define _AMR_AUDIO_RTP_SOURCE_HH
+
+#ifndef _RTP_SOURCE_HH
+#include "RTPSource.hh"
+#endif
+#ifndef _AMR_AUDIO_SOURCE_HH
+#include "AMRAudioSource.hh"
+#endif
+
+class AMRAudioRTPSource {
+public:
+  static AMRAudioSource* createNew(UsageEnvironment& env,
+				   Groupsock* RTPgs,
+				   RTPSource*& resultRTPSource,
+				   unsigned char rtpPayloadFormat,
+				   Boolean isWideband = False,
+				   unsigned numChannels = 1,
+				   Boolean isOctetAligned = True,
+				   unsigned interleaving = 0,
+				     // relevant only if "isOctetAligned"
+				     // The maximum # of frame-blocks in a group
+				     // 0 means: no interleaving
+				   Boolean robustSortingOrder = False,
+				     // relevant only if "isOctetAligned"
+				   Boolean CRCsArePresent = False
+				     // relevant only if "isOctetAligned"
+				   );
+      // This returns a source to read from, but "resultRTPSource" will
+      // point to RTP-related state.
+};
+
+#endif
diff --git a/liveMedia/include/AMRAudioSource.hh b/liveMedia/include/AMRAudioSource.hh
new file mode 100644
index 0000000..6bc131e
--- /dev/null
+++ b/liveMedia/include/AMRAudioSource.hh
@@ -0,0 +1,52 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A source object for AMR audio sources
+// C++ header
+
+#ifndef _AMR_AUDIO_SOURCE_HH
+#define _AMR_AUDIO_SOURCE_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class AMRAudioSource: public FramedSource {
+public:
+  Boolean isWideband() const { return fIsWideband; }
+  unsigned numChannels() const { return fNumChannels; }
+
+  u_int8_t lastFrameHeader() const { return fLastFrameHeader; }
+  // The frame header for the most recently read frame (RFC 4867, sec. 5.3)
+
+protected:
+  AMRAudioSource(UsageEnvironment& env, Boolean isWideband, unsigned numChannels);
+	// virtual base class
+  virtual ~AMRAudioSource();
+
+private:
+  // redefined virtual functions:
+  virtual char const* MIMEtype() const;
+  virtual Boolean isAMRAudioSource() const;
+
+protected:
+  Boolean fIsWideband;
+  unsigned fNumChannels;
+  u_int8_t fLastFrameHeader;
+};
+
+#endif
diff --git a/liveMedia/include/AVIFileSink.hh b/liveMedia/include/AVIFileSink.hh
new file mode 100644
index 0000000..04cbced
--- /dev/null
+++ b/liveMedia/include/AVIFileSink.hh
@@ -0,0 +1,115 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A sink that generates an AVI file from a composite media session
+// C++ header
+
+#ifndef _AVI_FILE_SINK_HH
+#define _AVI_FILE_SINK_HH
+
+#ifndef _MEDIA_SESSION_HH
+#include "MediaSession.hh"
+#endif
+
+class AVIFileSink: public Medium {
+public:
+  static AVIFileSink* createNew(UsageEnvironment& env,
+				MediaSession& inputSession,
+				char const* outputFileName,
+				unsigned bufferSize = 20000,
+				unsigned short movieWidth = 240,
+				unsigned short movieHeight = 180,
+				unsigned movieFPS = 15,
+				Boolean packetLossCompensate = False);
+
+  typedef void (afterPlayingFunc)(void* clientData);
+  Boolean startPlaying(afterPlayingFunc* afterFunc,
+                       void* afterClientData);
+
+  unsigned numActiveSubsessions() const { return fNumSubsessions; }
+
+private:
+  AVIFileSink(UsageEnvironment& env, MediaSession& inputSession,
+	      char const* outputFileName, unsigned bufferSize,
+	      unsigned short movieWidth, unsigned short movieHeight,
+	      unsigned movieFPS, Boolean packetLossCompensate);
+      // called only by createNew()
+  virtual ~AVIFileSink();
+
+  Boolean continuePlaying();
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  static void onSourceClosure(void* clientData);
+  void onSourceClosure1();
+  static void onRTCPBye(void* clientData);
+  void addIndexRecord(class AVIIndexRecord* newIndexRecord);
+  void completeOutputFile();
+
+private:
+  friend class AVISubsessionIOState;
+  MediaSession& fInputSession;
+  FILE* fOutFid;
+  class AVIIndexRecord *fIndexRecordsHead, *fIndexRecordsTail;
+  unsigned fNumIndexRecords;
+  unsigned fBufferSize;
+  Boolean fPacketLossCompensate;
+  Boolean fAreCurrentlyBeingPlayed;
+  afterPlayingFunc* fAfterFunc;
+  void* fAfterClientData;
+  unsigned fNumSubsessions;
+  unsigned fNumBytesWritten;
+  struct timeval fStartTime;
+  Boolean fHaveCompletedOutputFile;
+
+private:
+  ///// Definitions specific to the AVI file format:
+
+  unsigned addWord(unsigned word); // outputs "word" in little-endian order
+  unsigned addHalfWord(unsigned short halfWord);
+  unsigned addByte(unsigned char byte) {
+    putc(byte, fOutFid);
+    return 1;
+  }
+  unsigned addZeroWords(unsigned numWords);
+  unsigned add4ByteString(char const* str);
+  void setWord(unsigned filePosn, unsigned size);
+
+  // Define member functions for outputting various types of file header:
+#define _header(name) unsigned addFileHeader_##name()
+  _header(AVI);
+      _header(hdrl);
+          _header(avih);
+          _header(strl);
+              _header(strh);
+              _header(strf);
+              _header(JUNK);
+//        _header(JUNK);
+      _header(movi);
+private:
+  unsigned short fMovieWidth, fMovieHeight;
+  unsigned fMovieFPS;
+  unsigned fRIFFSizePosition, fRIFFSizeValue;
+  unsigned fAVIHMaxBytesPerSecondPosition;
+  unsigned fAVIHFrameCountPosition;
+  unsigned fMoviSizePosition, fMoviSizeValue;
+  class AVISubsessionIOState* fCurrentIOState;
+  unsigned fJunkNumber;
+};
+
+#endif
diff --git a/liveMedia/include/AudioInputDevice.hh b/liveMedia/include/AudioInputDevice.hh
new file mode 100644
index 0000000..fd689f4
--- /dev/null
+++ b/liveMedia/include/AudioInputDevice.hh
@@ -0,0 +1,71 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Generic audio input device (such as a microphone, or an input sound card)
+// C++ header
+
+#ifndef _AUDIO_INPUT_DEVICE_HH
+#define _AUDIO_INPUT_DEVICE_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class AudioPortNames {
+public:
+  AudioPortNames();
+  virtual ~AudioPortNames();
+
+  unsigned numPorts;
+  char** portName;
+};
+
+class AudioInputDevice: public FramedSource {
+public:
+  unsigned char bitsPerSample() const { return fBitsPerSample; }
+  unsigned char numChannels() const { return fNumChannels; }
+  unsigned samplingFrequency() const { return fSamplingFrequency; }
+
+  virtual Boolean setInputPort(int portIndex) = 0;
+  virtual double getAverageLevel() const = 0;
+
+  static AudioInputDevice*
+  createNew(UsageEnvironment& env, int inputPortNumber,
+	    unsigned char bitsPerSample, unsigned char numChannels,
+	    unsigned samplingFrequency, unsigned granularityInMS = 20);
+  static AudioPortNames* getPortNames();
+
+  static char** allowedDeviceNames;
+  // If this is set to non-NULL, then it's a NULL-terminated array of strings
+  // of device names that we are allowed to access.
+
+protected:
+  AudioInputDevice(UsageEnvironment& env,
+		   unsigned char bitsPerSample,
+		   unsigned char numChannels,
+		   unsigned samplingFrequency,
+		   unsigned granularityInMS);
+	// we're an abstract base class
+
+  virtual ~AudioInputDevice();
+
+protected:
+  unsigned char fBitsPerSample, fNumChannels;
+  unsigned fSamplingFrequency;
+  unsigned fGranularityInMS;
+};
+
+#endif
diff --git a/liveMedia/include/AudioRTPSink.hh b/liveMedia/include/AudioRTPSink.hh
new file mode 100644
index 0000000..b1c5280
--- /dev/null
+++ b/liveMedia/include/AudioRTPSink.hh
@@ -0,0 +1,42 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic RTP sink for audio codecs (abstract base class)
+// C++ header
+
+#ifndef _AUDIO_RTP_SINK_HH
+#define _AUDIO_RTP_SINK_HH
+
+#ifndef _MULTI_FRAMED_RTP_SINK_HH
+#include "MultiFramedRTPSink.hh"
+#endif
+
+class AudioRTPSink: public MultiFramedRTPSink {
+protected:
+  AudioRTPSink(UsageEnvironment& env,
+	       Groupsock* rtpgs, unsigned char rtpPayloadType,
+	       unsigned rtpTimestampFrequency,
+	       char const* rtpPayloadFormatName,
+	       unsigned numChannels = 1);
+  // (we're an abstract base class)
+  virtual ~AudioRTPSink();
+
+private: // redefined virtual functions:
+  virtual char const* sdpMediaType() const;
+};
+
+#endif
diff --git a/liveMedia/include/Base64.hh b/liveMedia/include/Base64.hh
new file mode 100644
index 0000000..17c068c
--- /dev/null
+++ b/liveMedia/include/Base64.hh
@@ -0,0 +1,43 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Base64 encoding and decoding
+// C++ header
+
+#ifndef _BASE64_HH
+#define _BASE64_HH
+
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+
+unsigned char* base64Decode(char const* in, unsigned& resultSize,
+			    Boolean trimTrailingZeros = True);
+    // returns a newly allocated array - of size "resultSize" - that
+    // the caller is responsible for delete[]ing.
+
+unsigned char* base64Decode(char const* in, unsigned inSize,
+			    unsigned& resultSize,
+			    Boolean trimTrailingZeros = True);
+    // As above, but includes the size of the input string (i.e., the number of bytes to decode) as a parameter.
+    // This saves an extra call to "strlen()" if we already know the length of the input string.
+
+char* base64Encode(char const* orig, unsigned origLength);
+    // returns a 0-terminated string that
+    // the caller is responsible for delete[]ing.
+
+#endif
diff --git a/liveMedia/include/BasicUDPSink.hh b/liveMedia/include/BasicUDPSink.hh
new file mode 100644
index 0000000..4766019
--- /dev/null
+++ b/liveMedia/include/BasicUDPSink.hh
@@ -0,0 +1,62 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simple UDP sink (i.e., without RTP or other headers added); one frame per packet
+// C++ header
+
+#ifndef _BASIC_UDP_SINK_HH
+#define _BASIC_UDP_SINK_HH
+
+#ifndef _MEDIA_SINK_HH
+#include "MediaSink.hh"
+#endif
+#ifndef _GROUPSOCK_HH
+#include <Groupsock.hh>
+#endif
+
+class BasicUDPSink: public MediaSink {
+public:
+  static BasicUDPSink* createNew(UsageEnvironment& env, Groupsock* gs,
+				  unsigned maxPayloadSize = 1450);
+protected:
+  BasicUDPSink(UsageEnvironment& env, Groupsock* gs, unsigned maxPayloadSize);
+      // called only by createNew()
+  virtual ~BasicUDPSink();
+
+private: // redefined virtual functions:
+  virtual Boolean continuePlaying();
+
+private:
+  void continuePlaying1();
+
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+			  unsigned durationInMicroseconds);
+
+  static void sendNext(void* firstArg);
+
+private:
+  Groupsock* fGS;
+  unsigned fMaxPayloadSize;
+  unsigned char* fOutputBuffer;
+  struct timeval fNextSendTime;
+};
+
+#endif
diff --git a/liveMedia/include/BasicUDPSource.hh b/liveMedia/include/BasicUDPSource.hh
new file mode 100644
index 0000000..e8db203
--- /dev/null
+++ b/liveMedia/include/BasicUDPSource.hh
@@ -0,0 +1,55 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simple UDP source, where every UDP payload is a complete frame
+// C++ header
+
+#ifndef _BASIC_UDP_SOURCE_HH
+#define _BASIC_UDP_SOURCE_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+#ifndef _GROUPSOCK_HH
+#include "Groupsock.hh"
+#endif
+
+class BasicUDPSource: public FramedSource {
+public:
+  static BasicUDPSource* createNew(UsageEnvironment& env, Groupsock* inputGS);
+
+  virtual ~BasicUDPSource();
+
+  Groupsock* gs() const { return fInputGS; }
+
+private:
+  BasicUDPSource(UsageEnvironment& env, Groupsock* inputGS);
+      // called only by createNew()
+
+  static void incomingPacketHandler(BasicUDPSource* source, int mask);
+  void incomingPacketHandler1();
+
+private: // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+private:
+  Groupsock* fInputGS;
+  Boolean fHaveStartedReading;
+};
+
+#endif
diff --git a/liveMedia/include/BitVector.hh b/liveMedia/include/BitVector.hh
new file mode 100644
index 0000000..4026a08
--- /dev/null
+++ b/liveMedia/include/BitVector.hh
@@ -0,0 +1,67 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Bit Vector data structure
+// C++ header
+
+#ifndef _BIT_VECTOR_HH
+#define _BIT_VECTOR_HH
+
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+
+class BitVector {
+public:
+  BitVector(unsigned char* baseBytePtr,
+	    unsigned baseBitOffset,
+	    unsigned totNumBits);
+
+  void setup(unsigned char* baseBytePtr,
+	     unsigned baseBitOffset,
+	     unsigned totNumBits);
+
+  void putBits(unsigned from, unsigned numBits); // "numBits" <= 32
+  void put1Bit(unsigned bit);
+
+  unsigned getBits(unsigned numBits); // "numBits" <= 32
+  unsigned get1Bit();
+  Boolean get1BitBoolean() { return get1Bit() != 0; }
+
+  void skipBits(unsigned numBits);
+
+  unsigned curBitIndex() const { return fCurBitIndex; }
+  unsigned totNumBits() const { return fTotNumBits; }
+  unsigned numBitsRemaining() const { return fTotNumBits - fCurBitIndex; }
+
+  unsigned get_expGolomb();
+      // Returns the value of the next bits, assuming that they were encoded using an exponential-Golomb code of order 0
+  int get_expGolombSigned(); // signed version of the above
+
+private:
+  unsigned char* fBaseBytePtr;
+  unsigned fBaseBitOffset;
+  unsigned fTotNumBits;
+  unsigned fCurBitIndex;
+};
+
+// A general bit copy operation:
+void shiftBits(unsigned char* toBasePtr, unsigned toBitOffset,
+	       unsigned char const* fromBasePtr, unsigned fromBitOffset,
+	       unsigned numBits);
+
+#endif
diff --git a/liveMedia/include/ByteStreamFileSource.hh b/liveMedia/include/ByteStreamFileSource.hh
new file mode 100644
index 0000000..b1e813a
--- /dev/null
+++ b/liveMedia/include/ByteStreamFileSource.hh
@@ -0,0 +1,82 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A file source that is a plain byte stream (rather than frames)
+// C++ header
+
+#ifndef _BYTE_STREAM_FILE_SOURCE_HH
+#define _BYTE_STREAM_FILE_SOURCE_HH
+
+#ifndef _FRAMED_FILE_SOURCE_HH
+#include "FramedFileSource.hh"
+#endif
+
+class ByteStreamFileSource: public FramedFileSource {
+public:
+  static ByteStreamFileSource* createNew(UsageEnvironment& env,
+					 char const* fileName,
+					 unsigned preferredFrameSize = 0,
+					 unsigned playTimePerFrame = 0);
+  // "preferredFrameSize" == 0 means 'no preference'
+  // "playTimePerFrame" is in microseconds
+
+  static ByteStreamFileSource* createNew(UsageEnvironment& env,
+					 FILE* fid,
+					 unsigned preferredFrameSize = 0,
+					 unsigned playTimePerFrame = 0);
+      // an alternative version of "createNew()" that's used if you already have
+      // an open file.
+
+  u_int64_t fileSize() const { return fFileSize; }
+      // 0 means zero-length, unbounded, or unknown
+
+  void seekToByteAbsolute(u_int64_t byteNumber, u_int64_t numBytesToStream = 0);
+    // if "numBytesToStream" is >0, then we limit the stream to that number of bytes, before treating it as EOF
+  void seekToByteRelative(int64_t offset, u_int64_t numBytesToStream = 0);
+  void seekToEnd(); // to force EOF handling on the next read
+
+protected:
+  ByteStreamFileSource(UsageEnvironment& env,
+		       FILE* fid,
+		       unsigned preferredFrameSize,
+		       unsigned playTimePerFrame);
+	// called only by createNew()
+
+  virtual ~ByteStreamFileSource();
+
+  static void fileReadableHandler(ByteStreamFileSource* source, int mask);
+  void doReadFromFile();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+protected:
+  u_int64_t fFileSize;
+
+private:
+  unsigned fPreferredFrameSize;
+  unsigned fPlayTimePerFrame;
+  Boolean fFidIsSeekable;
+  unsigned fLastPlayTime;
+  Boolean fHaveStartedReading;
+  Boolean fLimitNumBytesToStream;
+  u_int64_t fNumBytesToStream; // used iff "fLimitNumBytesToStream" is True
+};
+
+#endif
diff --git a/liveMedia/include/ByteStreamMemoryBufferSource.hh b/liveMedia/include/ByteStreamMemoryBufferSource.hh
new file mode 100644
index 0000000..a908813
--- /dev/null
+++ b/liveMedia/include/ByteStreamMemoryBufferSource.hh
@@ -0,0 +1,70 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class for streaming data from a (static) memory buffer, as if it were a file.
+// C++ header
+
+#ifndef _BYTE_STREAM_MEMORY_BUFFER_SOURCE_HH
+#define _BYTE_STREAM_MEMORY_BUFFER_SOURCE_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class ByteStreamMemoryBufferSource: public FramedSource {
+public:
+  static ByteStreamMemoryBufferSource* createNew(UsageEnvironment& env,
+						 u_int8_t* buffer, u_int64_t bufferSize,
+						 Boolean deleteBufferOnClose = True,
+						 unsigned preferredFrameSize = 0,
+						 unsigned playTimePerFrame = 0);
+      // "preferredFrameSize" == 0 means 'no preference'
+      // "playTimePerFrame" is in microseconds
+
+  u_int64_t bufferSize() const { return fBufferSize; }
+
+  void seekToByteAbsolute(u_int64_t byteNumber, u_int64_t numBytesToStream = 0);
+    // if "numBytesToStream" is >0, then we limit the stream to that number of bytes, before treating it as EOF
+  void seekToByteRelative(int64_t offset, u_int64_t numBytesToStream = 0);
+
+protected:
+  ByteStreamMemoryBufferSource(UsageEnvironment& env,
+			       u_int8_t* buffer, u_int64_t bufferSize,
+			       Boolean deleteBufferOnClose,
+			       unsigned preferredFrameSize,
+			       unsigned playTimePerFrame);
+	// called only by createNew()
+
+  virtual ~ByteStreamMemoryBufferSource();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  u_int8_t* fBuffer;
+  u_int64_t fBufferSize;
+  u_int64_t fCurIndex;
+  Boolean fDeleteBufferOnClose;
+  unsigned fPreferredFrameSize;
+  unsigned fPlayTimePerFrame;
+  unsigned fLastPlayTime;
+  Boolean fLimitNumBytesToStream;
+  u_int64_t fNumBytesToStream; // used iff "fLimitNumBytesToStream" is True
+};
+
+#endif
diff --git a/liveMedia/include/ByteStreamMultiFileSource.hh b/liveMedia/include/ByteStreamMultiFileSource.hh
new file mode 100644
index 0000000..470720e
--- /dev/null
+++ b/liveMedia/include/ByteStreamMultiFileSource.hh
@@ -0,0 +1,69 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A source that consists of multiple byte-stream files, read sequentially.
+// (The input is an array of file names, with a terminating 'file name' of NULL.)
+// C++ header
+
+#ifndef _BYTE_STREAM_MULTI_FILE_SOURCE_HH
+#define _BYTE_STREAM_MULTI_FILE_SOURCE_HH
+
+#ifndef _BYTE_STREAM_FILE_SOURCE_HH
+#include "ByteStreamFileSource.hh"
+#endif
+
+class ByteStreamMultiFileSource: public FramedSource {
+public:
+  static ByteStreamMultiFileSource*
+  createNew(UsageEnvironment& env, char const** fileNameArray,
+	    unsigned preferredFrameSize = 0, unsigned playTimePerFrame = 0);
+  // "fileNameArray" is a pointer to an array of (char const*) file names, with
+  // A 'file name' of NULL indicating the end of the array
+
+  Boolean haveStartedNewFile() const { return fHaveStartedNewFile; }
+  // True iff the most recently delivered frame was the first from a newly-opened file
+
+protected:
+  ByteStreamMultiFileSource(UsageEnvironment& env, char const** fileNameArray,
+			    unsigned preferredFrameSize, unsigned playTimePerFrame);
+	// called only by createNew()
+
+  virtual ~ByteStreamMultiFileSource();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  static void onSourceClosure(void* clientData);
+  void onSourceClosure1();
+  static void afterGettingFrame(void* clientData,
+				unsigned frameSize, unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+
+private:
+  unsigned fPreferredFrameSize;
+  unsigned fPlayTimePerFrame;
+  unsigned fNumSources;
+  unsigned fCurrentlyReadSourceNumber;
+  Boolean fHaveStartedNewFile;
+  char const** fFileNameArray;
+  ByteStreamFileSource** fSourceArray;
+};
+
+#endif
diff --git a/liveMedia/include/DVVideoFileServerMediaSubsession.hh b/liveMedia/include/DVVideoFileServerMediaSubsession.hh
new file mode 100644
index 0000000..d0d4eae
--- /dev/null
+++ b/liveMedia/include/DVVideoFileServerMediaSubsession.hh
@@ -0,0 +1,51 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a DV video file.
+// C++ header
+
+#ifndef _DV_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _DV_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+
+class DVVideoFileServerMediaSubsession: public FileServerMediaSubsession{
+public:
+  static DVVideoFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource);
+
+private:
+  DVVideoFileServerMediaSubsession(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource);
+      // called only by createNew();
+  virtual ~DVVideoFileServerMediaSubsession();
+
+private: // redefined virtual functions
+  virtual char const* getAuxSDPLine(RTPSink* rtpSink, FramedSource* inputSource);
+  virtual void seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes);
+  virtual void setStreamSourceDuration(FramedSource* inputSource, double streamDuration, u_int64_t& numBytes);
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId, unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic, FramedSource* inputSource);
+  virtual float duration() const;
+
+private:
+  float fFileDuration; // in seconds
+};
+
+#endif
diff --git a/liveMedia/include/DVVideoRTPSink.hh b/liveMedia/include/DVVideoRTPSink.hh
new file mode 100644
index 0000000..74e2f39
--- /dev/null
+++ b/liveMedia/include/DVVideoRTPSink.hh
@@ -0,0 +1,57 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for DV video (RFC 3189)
+// (Thanks to Ben Hutchings for prototyping this.)
+// C++ header
+
+#ifndef _DV_VIDEO_RTP_SINK_HH
+#define _DV_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+#ifndef _DV_VIDEO_STREAM_FRAMER_HH
+#include "DVVideoStreamFramer.hh"
+#endif
+
+class DVVideoRTPSink: public VideoRTPSink {
+public:
+  static DVVideoRTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat);
+  char const* auxSDPLineFromFramer(DVVideoStreamFramer* framerSource);
+
+protected:
+  DVVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat);
+	// called only by createNew()
+
+  virtual ~DVVideoRTPSink();
+
+private: // redefined virtual functions:
+  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual unsigned computeOverflowForNewFrame(unsigned newFrameSize) const;
+  virtual char const* auxSDPLine();
+
+private:
+  char* fFmtpSDPLine;
+};
+
+#endif
diff --git a/liveMedia/include/DVVideoRTPSource.hh b/liveMedia/include/DVVideoRTPSource.hh
new file mode 100644
index 0000000..c5afa14
--- /dev/null
+++ b/liveMedia/include/DVVideoRTPSource.hh
@@ -0,0 +1,51 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// DV Video RTP Sources
+// C++ header
+
+#ifndef _DV_VIDEO_RTP_SOURCE_HH
+#define _DV_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class DVVideoRTPSource: public MultiFramedRTPSource {
+public:
+  static DVVideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency);
+
+protected:
+  virtual ~DVVideoRTPSource();
+
+private:
+  DVVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		   unsigned char rtpPayloadFormat,
+		   unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+};
+
+#endif
diff --git a/liveMedia/include/DVVideoStreamFramer.hh b/liveMedia/include/DVVideoStreamFramer.hh
new file mode 100644
index 0000000..738f893
--- /dev/null
+++ b/liveMedia/include/DVVideoStreamFramer.hh
@@ -0,0 +1,72 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that parses a DV input stream into DV frames to deliver to the downstream object
+// C++ header
+
+#ifndef _DV_VIDEO_STREAM_FRAMER_HH
+#define _DV_VIDEO_STREAM_FRAMER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+#define DV_DIF_BLOCK_SIZE 80
+#define DV_NUM_BLOCKS_PER_SEQUENCE 150
+#define DV_SAVED_INITIAL_BLOCKS_SIZE ((DV_NUM_BLOCKS_PER_SEQUENCE+6-1)*DV_DIF_BLOCK_SIZE)
+    /* enough data to ensure that it contains an intact 6-block header (which occurs at the start of a 150-block sequence) */
+
+class DVVideoStreamFramer: public FramedFilter {
+public:
+  static DVVideoStreamFramer*
+  createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    Boolean sourceIsSeekable = False, Boolean leavePresentationTimesUnmodified = False);
+      // Set "sourceIsSeekable" to True if the input source is a seekable object (e.g. a file), and the server that uses us
+      // does a seek-to-zero on the source before reading from it.  (Our RTSP server implementation does this.)
+  char const* profileName();
+  Boolean getFrameParameters(unsigned& frameSize/*bytes*/, double& frameDuration/*microseconds*/);
+
+protected:
+  DVVideoStreamFramer(UsageEnvironment& env, FramedSource* inputSource,
+		      Boolean sourceIsSeekable, Boolean leavePresentationTimesUnmodified);
+      // called only by createNew(), or by subclass constructors
+  virtual ~DVVideoStreamFramer();
+
+protected:
+  // redefined virtual functions:
+  virtual Boolean isDVVideoStreamFramer() const;
+  virtual void doGetNextFrame();
+
+protected:
+  void getAndDeliverData(); // used to implement "doGetNextFrame()"
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime);
+  void getProfile();
+
+protected:
+  Boolean fLeavePresentationTimesUnmodified;
+  void const* fOurProfile;
+  struct timeval fNextFramePresentationTime;
+  unsigned char fSavedInitialBlocks[DV_SAVED_INITIAL_BLOCKS_SIZE];
+  char fInitialBlocksPresent;
+  Boolean fSourceIsSeekable;
+};
+
+#endif
diff --git a/liveMedia/include/DeviceSource.hh b/liveMedia/include/DeviceSource.hh
new file mode 100644
index 0000000..d4713d7
--- /dev/null
+++ b/liveMedia/include/DeviceSource.hh
@@ -0,0 +1,66 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A template for a MediaSource encapsulating an audio/video input device
+// 
+// NOTE: Sections of this code labeled "%%% TO BE WRITTEN %%%" are incomplete, and needto be written by the programmer
+// (depending on the features of the particulardevice).
+// C++ header
+
+#ifndef _DEVICE_SOURCE_HH
+#define _DEVICE_SOURCE_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+// The following class can be used to define specific encoder parameters
+class DeviceParameters {
+  //%%% TO BE WRITTEN %%%
+};
+
+class DeviceSource: public FramedSource {
+public:
+  static DeviceSource* createNew(UsageEnvironment& env,
+				 DeviceParameters params);
+
+public:
+  static EventTriggerId eventTriggerId;
+  // Note that this is defined here to be a static class variable, because this code is intended to illustrate how to
+  // encapsulate a *single* device - not a set of devices.
+  // You can, however, redefine this to be a non-static member variable.
+
+protected:
+  DeviceSource(UsageEnvironment& env, DeviceParameters params);
+  // called only by createNew(), or by subclass constructors
+  virtual ~DeviceSource();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  //virtual void doStopGettingFrames(); // optional
+
+private:
+  static void deliverFrame0(void* clientData);
+  void deliverFrame();
+
+private:
+  static unsigned referenceCount; // used to count how many instances of this class currently exist
+  DeviceParameters fParams;
+};
+
+#endif
diff --git a/liveMedia/include/DigestAuthentication.hh b/liveMedia/include/DigestAuthentication.hh
new file mode 100644
index 0000000..7a1dc80
--- /dev/null
+++ b/liveMedia/include/DigestAuthentication.hh
@@ -0,0 +1,75 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class used for digest authentication.
+// C++ header
+
+#ifndef _DIGEST_AUTHENTICATION_HH
+#define _DIGEST_AUTHENTICATION_HH
+
+#ifndef _BOOLEAN_HH
+#include <Boolean.hh>
+#endif
+
+// A class used for digest authentication.
+// The "realm", and "nonce" fields are supplied by the server
+// (in a "401 Unauthorized" response).
+// The "username" and "password" fields are supplied by the client.
+class Authenticator {
+public:
+  Authenticator();
+  Authenticator(char const* username, char const* password, Boolean passwordIsMD5 = False);
+      // If "passwordIsMD5" is True, then "password" is actually the value computed
+      // by md5(<username>:<realm>:<actual-password>)
+  Authenticator(const Authenticator& orig);
+  Authenticator& operator=(const Authenticator& rightSide);
+  Boolean operator<(const Authenticator* rightSide);
+  virtual ~Authenticator();
+
+  void reset();
+  void setRealmAndNonce(char const* realm, char const* nonce);
+  void setRealmAndRandomNonce(char const* realm);
+      // as above, except that the nonce is created randomly.
+      // (This is used by servers.)
+  void setUsernameAndPassword(char const* username, char const* password, Boolean passwordIsMD5 = False);
+      // If "passwordIsMD5" is True, then "password" is actually the value computed
+      // by md5(<username>:<realm>:<actual-password>)
+
+  char const* realm() const { return fRealm; }
+  char const* nonce() const { return fNonce; }
+  char const* username() const { return fUsername; }
+  char const* password() const { return fPassword; }
+
+  char const* computeDigestResponse(char const* cmd, char const* url) const;
+      // The returned string from this function must later be freed by calling:
+  void reclaimDigestResponse(char const* responseStr) const;
+
+private:
+  void resetRealmAndNonce();
+  void resetUsernameAndPassword();
+  void assignRealmAndNonce(char const* realm, char const* nonce);
+  void assignUsernameAndPassword(char const* username, char const* password, Boolean passwordIsMD5);
+  void assign(char const* realm, char const* nonce,
+	      char const* username, char const* password, Boolean passwordIsMD5);
+
+private:
+  char* fRealm; char* fNonce;
+  char* fUsername; char* fPassword;
+  Boolean fPasswordIsMD5;
+};
+
+#endif
diff --git a/liveMedia/include/FileServerMediaSubsession.hh b/liveMedia/include/FileServerMediaSubsession.hh
new file mode 100644
index 0000000..80da682
--- /dev/null
+++ b/liveMedia/include/FileServerMediaSubsession.hh
@@ -0,0 +1,43 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a file.
+// C++ header
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _SERVER_MEDIA_SESSION_HH
+#include "ServerMediaSession.hh"
+#endif
+#ifndef _ON_DEMAND_SERVER_MEDIA_SUBSESSION_HH
+#include "OnDemandServerMediaSubsession.hh"
+#endif
+
+class FileServerMediaSubsession: public OnDemandServerMediaSubsession {
+protected: // we're a virtual base class
+  FileServerMediaSubsession(UsageEnvironment& env, char const* fileName,
+			    Boolean reuseFirstSource);
+  virtual ~FileServerMediaSubsession();
+
+protected:
+  char const* fFileName;
+  u_int64_t fFileSize; // if known
+};
+
+#endif
diff --git a/liveMedia/include/FileSink.hh b/liveMedia/include/FileSink.hh
new file mode 100644
index 0000000..bad86e7
--- /dev/null
+++ b/liveMedia/include/FileSink.hh
@@ -0,0 +1,71 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// File Sinks
+// C++ header
+
+#ifndef _FILE_SINK_HH
+#define _FILE_SINK_HH
+
+#ifndef _MEDIA_SINK_HH
+#include "MediaSink.hh"
+#endif
+
+class FileSink: public MediaSink {
+public:
+  static FileSink* createNew(UsageEnvironment& env, char const* fileName,
+			     unsigned bufferSize = 20000,
+			     Boolean oneFilePerFrame = False);
+  // "bufferSize" should be at least as large as the largest expected
+  //   input frame.
+  // "oneFilePerFrame" - if True - specifies that each input frame will
+  //   be written to a separate file (using the presentation time as a
+  //   file name suffix).  The default behavior ("oneFilePerFrame" == False)
+  //   is to output all incoming data into a single file.
+
+  virtual void addData(unsigned char const* data, unsigned dataSize,
+		       struct timeval presentationTime);
+  // (Available in case a client wants to add extra data to the output file)
+
+protected:
+  FileSink(UsageEnvironment& env, FILE* fid, unsigned bufferSize,
+	   char const* perFrameFileNamePrefix);
+      // called only by createNew()
+  virtual ~FileSink();
+
+protected: // redefined virtual functions:
+  virtual Boolean continuePlaying();
+
+protected:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  virtual void afterGettingFrame(unsigned frameSize,
+				 unsigned numTruncatedBytes,
+				 struct timeval presentationTime);
+
+  FILE* fOutFid;
+  unsigned char* fBuffer;
+  unsigned fBufferSize;
+  char* fPerFrameFileNamePrefix; // used if "oneFilePerFrame" is True
+  char* fPerFrameFileNameBuffer; // used if "oneFilePerFrame" is True
+  struct timeval fPrevPresentationTime;
+  unsigned fSamePresentationTimeCounter;
+};
+
+#endif
diff --git a/liveMedia/include/FramedFileSource.hh b/liveMedia/include/FramedFileSource.hh
new file mode 100644
index 0000000..f24adf6
--- /dev/null
+++ b/liveMedia/include/FramedFileSource.hh
@@ -0,0 +1,37 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Framed File Sources
+// C++ header
+
+#ifndef _FRAMED_FILE_SOURCE_HH
+#define _FRAMED_FILE_SOURCE_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class FramedFileSource: public FramedSource {
+protected:
+  FramedFileSource(UsageEnvironment& env, FILE* fid); // abstract base class
+  virtual ~FramedFileSource();
+
+protected:
+  FILE* fFid;
+};
+
+#endif
diff --git a/liveMedia/include/FramedFilter.hh b/liveMedia/include/FramedFilter.hh
new file mode 100644
index 0000000..b3a4de7
--- /dev/null
+++ b/liveMedia/include/FramedFilter.hh
@@ -0,0 +1,52 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Framed Filters
+// C++ header
+
+#ifndef _FRAMED_FILTER_HH
+#define _FRAMED_FILTER_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class FramedFilter: public FramedSource {
+public:
+  FramedSource* inputSource() const { return fInputSource; }
+
+  void reassignInputSource(FramedSource* newInputSource) { fInputSource = newInputSource; }
+
+  // Call before destruction if you want to prevent the destructor from closing the input source
+  void detachInputSource();
+
+protected:
+  FramedFilter(UsageEnvironment& env, FramedSource* inputSource);
+	 // abstract base class
+  virtual ~FramedFilter();
+
+protected:
+  // Redefined virtual functions (with default 'null' implementations):
+  virtual char const* MIMEtype() const;
+  virtual void getAttributes() const;
+  virtual void doStopGettingFrames();
+
+protected:
+  FramedSource* fInputSource;
+};
+
+#endif
diff --git a/liveMedia/include/FramedSource.hh b/liveMedia/include/FramedSource.hh
new file mode 100644
index 0000000..0e017ab
--- /dev/null
+++ b/liveMedia/include/FramedSource.hh
@@ -0,0 +1,95 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Framed Sources
+// C++ header
+
+#ifndef _FRAMED_SOURCE_HH
+#define _FRAMED_SOURCE_HH
+
+#ifndef _NET_COMMON_H
+#include "NetCommon.h"
+#endif
+#ifndef _MEDIA_SOURCE_HH
+#include "MediaSource.hh"
+#endif
+
+class FramedSource: public MediaSource {
+public:
+  static Boolean lookupByName(UsageEnvironment& env, char const* sourceName,
+			      FramedSource*& resultSource);
+
+  typedef void (afterGettingFunc)(void* clientData, unsigned frameSize,
+				  unsigned numTruncatedBytes,
+				  struct timeval presentationTime,
+				  unsigned durationInMicroseconds);
+  typedef void (onCloseFunc)(void* clientData);
+  void getNextFrame(unsigned char* to, unsigned maxSize,
+		    afterGettingFunc* afterGettingFunc,
+		    void* afterGettingClientData,
+		    onCloseFunc* onCloseFunc,
+		    void* onCloseClientData);
+
+  static void handleClosure(void* clientData);
+  void handleClosure();
+      // This should be called (on ourself) if the source is discovered
+      // to be closed (i.e., no longer readable)
+
+  void stopGettingFrames();
+
+  virtual unsigned maxFrameSize() const;
+      // size of the largest possible frame that we may serve, or 0
+      // if no such maximum is known (default)
+
+  virtual void doGetNextFrame() = 0;
+      // called by getNextFrame()
+
+  Boolean isCurrentlyAwaitingData() const {return fIsCurrentlyAwaitingData;}
+
+  static void afterGetting(FramedSource* source);
+      // doGetNextFrame() should arrange for this to be called after the
+      // frame has been read (*iff* it is read successfully)
+
+protected:
+  FramedSource(UsageEnvironment& env); // abstract base class
+  virtual ~FramedSource();
+
+  virtual void doStopGettingFrames();
+
+protected:
+  // The following variables are typically accessed/set by doGetNextFrame()
+  unsigned char* fTo; // in
+  unsigned fMaxSize; // in
+  unsigned fFrameSize; // out
+  unsigned fNumTruncatedBytes; // out
+  struct timeval fPresentationTime; // out
+  unsigned fDurationInMicroseconds; // out
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isFramedSource() const;
+
+private:
+  afterGettingFunc* fAfterGettingFunc;
+  void* fAfterGettingClientData;
+  onCloseFunc* fOnCloseFunc;
+  void* fOnCloseClientData;
+
+  Boolean fIsCurrentlyAwaitingData;
+};
+
+#endif
diff --git a/liveMedia/include/GSMAudioRTPSink.hh b/liveMedia/include/GSMAudioRTPSink.hh
new file mode 100644
index 0000000..faa1175
--- /dev/null
+++ b/liveMedia/include/GSMAudioRTPSink.hh
@@ -0,0 +1,44 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for GSM audio
+// C++ header
+
+#ifndef _GSM_AUDIO_RTP_SINK_HH
+#define _GSM_AUDIO_RTP_SINK_HH
+
+#ifndef _AUDIO_RTP_SINK_HH
+#include "AudioRTPSink.hh"
+#endif
+
+class GSMAudioRTPSink: public AudioRTPSink {
+public:
+  static GSMAudioRTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs);
+
+protected:
+  GSMAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs);
+	// called only by createNew()
+
+  virtual ~GSMAudioRTPSink();
+
+private: // redefined virtual functions:
+  virtual
+  Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+					 unsigned numBytesInFrame) const;
+};
+
+#endif
diff --git a/liveMedia/include/GenericMediaServer.hh b/liveMedia/include/GenericMediaServer.hh
new file mode 100644
index 0000000..5f51a76
--- /dev/null
+++ b/liveMedia/include/GenericMediaServer.hh
@@ -0,0 +1,195 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic media server class, used to implement a RTSP server, and any other server that uses
+//  "ServerMediaSession" objects to describe media to be served.
+// C++ header
+
+#ifndef _GENERIC_MEDIA_SERVER_HH
+#define _GENERIC_MEDIA_SERVER_HH
+
+#ifndef _MEDIA_HH
+#include "Media.hh"
+#endif
+#ifndef _SERVER_MEDIA_SESSION_HH
+#include "ServerMediaSession.hh"
+#endif
+
+#ifndef REQUEST_BUFFER_SIZE
+#define REQUEST_BUFFER_SIZE 20000 // for incoming requests
+#endif
+#ifndef RESPONSE_BUFFER_SIZE
+#define RESPONSE_BUFFER_SIZE 20000
+#endif
+
+class GenericMediaServer: public Medium {
+public:
+  void addServerMediaSession(ServerMediaSession* serverMediaSession);
+
+  virtual ServerMediaSession*
+  lookupServerMediaSession(char const* streamName, Boolean isFirstLookupInSession = True);
+
+  void removeServerMediaSession(ServerMediaSession* serverMediaSession);
+      // Removes the "ServerMediaSession" object from our lookup table, so it will no longer be accessible by new clients.
+      // (However, any *existing* client sessions that use this "ServerMediaSession" object will continue streaming.
+      //  The "ServerMediaSession" object will not get deleted until all of these client sessions have closed.)
+      // (To both delete the "ServerMediaSession" object *and* close all client sessions that use it,
+      //  call "deleteServerMediaSession(serverMediaSession)" instead.)
+  virtual void removeServerMediaSession(char const* streamName);
+     // ditto
+
+  void closeAllClientSessionsForServerMediaSession(ServerMediaSession* serverMediaSession);
+      // Closes (from the server) all client sessions that are currently using this "ServerMediaSession" object.
+      // Note, however, that the "ServerMediaSession" object remains accessible by new clients.
+  virtual void closeAllClientSessionsForServerMediaSession(char const* streamName);
+     // ditto
+
+  void deleteServerMediaSession(ServerMediaSession* serverMediaSession);
+      // Equivalent to:
+      //     "closeAllClientSessionsForServerMediaSession(serverMediaSession); removeServerMediaSession(serverMediaSession);"
+  virtual void deleteServerMediaSession(char const* streamName);
+      // Equivalent to:
+      //     "closeAllClientSessionsForServerMediaSession(streamName); removeServerMediaSession(streamName);
+
+  unsigned numClientSessions() const { return fClientSessions->numEntries(); }
+
+protected:
+  GenericMediaServer(UsageEnvironment& env, int ourSocket, Port ourPort,
+		     unsigned reclamationSeconds);
+      // If "reclamationSeconds" > 0, then the "ClientSession" state for each client will get
+      // reclaimed if no activity from the client is detected in at least "reclamationSeconds".
+  // we're an abstract base class
+  virtual ~GenericMediaServer();
+  void cleanup(); // MUST be called in the destructor of any subclass of us
+
+  static int setUpOurSocket(UsageEnvironment& env, Port& ourPort);
+
+  static void incomingConnectionHandler(void*, int /*mask*/);
+  void incomingConnectionHandler();
+  void incomingConnectionHandlerOnSocket(int serverSocket);
+
+public: // should be protected, but some old compilers complain otherwise
+  // The state of a TCP connection used by a client:
+  class ClientConnection {
+  protected:
+    ClientConnection(GenericMediaServer& ourServer, int clientSocket, struct sockaddr_in clientAddr);
+    virtual ~ClientConnection();
+
+    UsageEnvironment& envir() { return fOurServer.envir(); }
+    void closeSockets();
+
+    static void incomingRequestHandler(void*, int /*mask*/);
+    void incomingRequestHandler();
+    virtual void handleRequestBytes(int newBytesRead) = 0;
+    void resetRequestBuffer();
+
+  protected:
+    friend class GenericMediaServer;
+    friend class ClientSession;
+    friend class RTSPServer; // needed to make some broken Windows compilers work; remove this in the future when we end support for Windows
+    GenericMediaServer& fOurServer;
+    int fOurSocket;
+    struct sockaddr_in fClientAddr;
+    unsigned char fRequestBuffer[REQUEST_BUFFER_SIZE];
+    unsigned char fResponseBuffer[RESPONSE_BUFFER_SIZE];
+    unsigned fRequestBytesAlreadySeen, fRequestBufferBytesLeft;
+  };
+
+  // The state of an individual client session (using one or more sequential TCP connections) handled by a server:
+  class ClientSession {
+  protected:
+    ClientSession(GenericMediaServer& ourServer, u_int32_t sessionId);
+    virtual ~ClientSession();
+
+    UsageEnvironment& envir() { return fOurServer.envir(); }
+    void noteLiveness();
+    static void noteClientLiveness(ClientSession* clientSession);
+    static void livenessTimeoutTask(ClientSession* clientSession);
+
+  protected:
+    friend class GenericMediaServer;
+    friend class ClientConnection;
+    GenericMediaServer& fOurServer;
+    u_int32_t fOurSessionId;
+    ServerMediaSession* fOurServerMediaSession;
+    TaskToken fLivenessCheckTask;
+  };
+
+protected:
+  virtual ClientConnection* createNewClientConnection(int clientSocket, struct sockaddr_in clientAddr) = 0;
+  virtual ClientSession* createNewClientSession(u_int32_t sessionId) = 0;
+
+  ClientSession* createNewClientSessionWithId();
+      // Generates a new (unused) random session id, and calls the "createNewClientSession()"
+      // virtual function with this session id as parameter.
+
+  // Lookup a "ClientSession" object by sessionId (integer, and string):
+  ClientSession* lookupClientSession(u_int32_t sessionId);
+  ClientSession* lookupClientSession(char const* sessionIdStr);
+
+  // An iterator over our "ServerMediaSession" objects:
+  class ServerMediaSessionIterator {
+  public:
+    ServerMediaSessionIterator(GenericMediaServer& server);
+    virtual ~ServerMediaSessionIterator();
+    ServerMediaSession* next();
+  private:
+    HashTable::Iterator* fOurIterator;
+  };
+
+protected:
+  friend class ClientConnection;
+  friend class ClientSession;	
+  friend class ServerMediaSessionIterator;
+  int fServerSocket;
+  Port fServerPort;
+  unsigned fReclamationSeconds;
+
+private:
+  HashTable* fServerMediaSessions; // maps 'stream name' strings to "ServerMediaSession" objects
+  HashTable* fClientConnections; // the "ClientConnection" objects that we're using
+  HashTable* fClientSessions; // maps 'session id' strings to "ClientSession" objects
+  u_int32_t fPreviousClientSessionId;
+};
+
+// A data structure used for optional user/password authentication:
+
+class UserAuthenticationDatabase {
+public:
+  UserAuthenticationDatabase(char const* realm = NULL,
+			     Boolean passwordsAreMD5 = False);
+    // If "passwordsAreMD5" is True, then each password stored into, or removed from,
+    // the database is actually the value computed
+    // by md5(<username>:<realm>:<actual-password>)
+  virtual ~UserAuthenticationDatabase();
+
+  virtual void addUserRecord(char const* username, char const* password);
+  virtual void removeUserRecord(char const* username);
+
+  virtual char const* lookupPassword(char const* username);
+      // returns NULL if the user name was not present
+
+  char const* realm() { return fRealm; }
+  Boolean passwordsAreMD5() { return fPasswordsAreMD5; }
+
+protected:
+  HashTable* fTable;
+  char* fRealm;
+  Boolean fPasswordsAreMD5;
+};
+
+#endif
diff --git a/liveMedia/include/H261VideoRTPSource.hh b/liveMedia/include/H261VideoRTPSource.hh
new file mode 100644
index 0000000..6f1b62b
--- /dev/null
+++ b/liveMedia/include/H261VideoRTPSource.hh
@@ -0,0 +1,56 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.261 Video RTP Sources
+// C++ header
+
+#ifndef _H261_VIDEO_RTP_SOURCE_HH
+#define _H261_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class H261VideoRTPSource: public MultiFramedRTPSource {
+public:
+  static H261VideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat = 31,
+	    unsigned rtpTimestampFrequency = 90000);
+
+  u_int32_t lastSpecialHeader() const {return fLastSpecialHeader;}
+
+protected:
+  virtual ~H261VideoRTPSource();
+
+private:
+  H261VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			 unsigned char rtpPayloadFormat,
+			 unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  u_int32_t fLastSpecialHeader;
+};
+
+#endif
diff --git a/liveMedia/include/H263plusVideoFileServerMediaSubsession.hh b/liveMedia/include/H263plusVideoFileServerMediaSubsession.hh
new file mode 100644
index 0000000..0ed5963
--- /dev/null
+++ b/liveMedia/include/H263plusVideoFileServerMediaSubsession.hh
@@ -0,0 +1,48 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a H.263 video file.
+// C++ header
+
+#ifndef _H263PLUS_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _H263PLUS_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+
+class H263plusVideoFileServerMediaSubsession: public FileServerMediaSubsession{
+public:
+  static H263plusVideoFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource);
+
+private:
+  H263plusVideoFileServerMediaSubsession(UsageEnvironment& env,
+					 char const* fileName, Boolean reuseFirstSource);
+      // called only by createNew();
+  virtual ~H263plusVideoFileServerMediaSubsession();
+
+private: // redefined virtual functions
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				                    FramedSource* inputSource);
+};
+
+#endif
diff --git a/liveMedia/include/H263plusVideoRTPSink.hh b/liveMedia/include/H263plusVideoRTPSink.hh
new file mode 100644
index 0000000..34e6be1
--- /dev/null
+++ b/liveMedia/include/H263plusVideoRTPSink.hh
@@ -0,0 +1,54 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for H.263+ video (RFC 4629)
+// C++ header
+
+#ifndef _H263_PLUS_VIDEO_RTP_SINK_HH
+#define _H263_PLUS_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+
+class H263plusVideoRTPSink: public VideoRTPSink {
+public:
+  static H263plusVideoRTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs,
+					 unsigned char rtpPayloadFormat,
+					 u_int32_t rtpTimestampFrequency = 90000);
+
+protected:
+  H263plusVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		       unsigned char rtpPayloadFormat,
+		       u_int32_t rtpTimestampFrequency);
+	// called only by createNew()
+
+  virtual ~H263plusVideoRTPSink();
+
+private: // redefined virtual functions:
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual
+  Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+					 unsigned numBytesInFrame) const;
+  virtual unsigned specialHeaderSize() const;
+};
+
+#endif
diff --git a/liveMedia/include/H263plusVideoRTPSource.hh b/liveMedia/include/H263plusVideoRTPSource.hh
new file mode 100644
index 0000000..cb1b4d3
--- /dev/null
+++ b/liveMedia/include/H263plusVideoRTPSource.hh
@@ -0,0 +1,60 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.263+ Video RTP Sources
+// C++ header
+
+#ifndef _H263_PLUS_VIDEO_RTP_SOURCE_HH
+#define _H263_PLUS_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+#define SPECIAL_HEADER_BUFFER_SIZE 1000
+
+class H263plusVideoRTPSource: public MultiFramedRTPSource {
+public:
+  static H263plusVideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency = 90000);
+
+  // A data structure that stores copies of the special header bytes
+  // from the most recent frame's RTP packets:
+  unsigned char fNumSpecialHeaders;
+  unsigned fSpecialHeaderBytesLength;
+  unsigned char fSpecialHeaderBytes[SPECIAL_HEADER_BUFFER_SIZE];
+  unsigned fPacketSizes[256];
+
+protected:
+  virtual ~H263plusVideoRTPSource();
+
+private:
+  H263plusVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			 unsigned char rtpPayloadFormat,
+			 unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+};
+
+#endif
diff --git a/liveMedia/include/H263plusVideoStreamFramer.hh b/liveMedia/include/H263plusVideoStreamFramer.hh
new file mode 100644
index 0000000..171ff0b
--- /dev/null
+++ b/liveMedia/include/H263plusVideoStreamFramer.hh
@@ -0,0 +1,64 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an H263 video elementary stream into frames.
+// Author Benhard Feiten
+
+#ifndef _H263PLUS_VIDEO_STREAM_FRAMER_HH
+#define _H263PLUS_VIDEO_STREAM_FRAMER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+
+class H263plusVideoStreamFramer: public FramedFilter {
+public:
+
+  static H263plusVideoStreamFramer* createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+  Boolean& pictureEndMarker() { return fPictureEndMarker; }    // a hack for implementing the RTP 'M' bit
+
+protected:
+  // Constructor called only by createNew(), or by subclass constructors
+  H263plusVideoStreamFramer(UsageEnvironment& env,
+			                FramedSource* inputSource,
+			                Boolean createParser = True);
+  virtual ~H263plusVideoStreamFramer();
+
+
+public:
+  static void continueReadProcessing(void* clientData,
+				     unsigned char* ptr, unsigned size,
+				     struct timeval presentationTime);
+  void continueReadProcessing();
+
+private:
+  virtual void doGetNextFrame();
+  virtual Boolean isH263plusVideoStreamFramer() const;
+
+protected:
+  double   fFrameRate;
+  unsigned fPictureCount; // hack used to implement doGetNextFrame() ??
+  Boolean  fPictureEndMarker;
+
+private:
+  class H263plusVideoStreamParser* fParser;
+  struct timeval fPresentationTimeBase;
+};
+
+#endif
diff --git a/liveMedia/include/H264VideoFileServerMediaSubsession.hh b/liveMedia/include/H264VideoFileServerMediaSubsession.hh
new file mode 100644
index 0000000..ca1fd65
--- /dev/null
+++ b/liveMedia/include/H264VideoFileServerMediaSubsession.hh
@@ -0,0 +1,61 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a H264 Elementary Stream video file.
+// C++ header
+
+#ifndef _H264_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _H264_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+
+class H264VideoFileServerMediaSubsession: public FileServerMediaSubsession {
+public:
+  static H264VideoFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource);
+
+  // Used to implement "getAuxSDPLine()":
+  void checkForAuxSDPLine1();
+  void afterPlayingDummy1();
+
+protected:
+  H264VideoFileServerMediaSubsession(UsageEnvironment& env,
+				      char const* fileName, Boolean reuseFirstSource);
+      // called only by createNew();
+  virtual ~H264VideoFileServerMediaSubsession();
+
+  void setDoneFlag() { fDoneFlag = ~0; }
+
+protected: // redefined virtual functions
+  virtual char const* getAuxSDPLine(RTPSink* rtpSink,
+				    FramedSource* inputSource);
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+
+private:
+  char* fAuxSDPLine;
+  char fDoneFlag; // used when setting up "fAuxSDPLine"
+  RTPSink* fDummyRTPSink; // ditto
+};
+
+#endif
diff --git a/liveMedia/include/H264VideoFileSink.hh b/liveMedia/include/H264VideoFileSink.hh
new file mode 100644
index 0000000..881288a
--- /dev/null
+++ b/liveMedia/include/H264VideoFileSink.hh
@@ -0,0 +1,47 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.264 Video File Sinks
+// C++ header
+
+#ifndef _H264_VIDEO_FILE_SINK_HH
+#define _H264_VIDEO_FILE_SINK_HH
+
+#ifndef _H264_OR_5_VIDEO_FILE_SINK_HH
+#include "H264or5VideoFileSink.hh"
+#endif
+
+class H264VideoFileSink: public H264or5VideoFileSink {
+public:
+  static H264VideoFileSink* createNew(UsageEnvironment& env, char const* fileName,
+				      char const* sPropParameterSetsStr = NULL,
+      // "sPropParameterSetsStr" is an optional 'SDP format' string
+      // (comma-separated Base64-encoded) representing SPS and/or PPS NAL-units
+      // to prepend to the output
+				      unsigned bufferSize = 100000,
+				      Boolean oneFilePerFrame = False);
+      // See "FileSink.hh" for a description of these parameters.
+
+protected:
+  H264VideoFileSink(UsageEnvironment& env, FILE* fid,
+		    char const* sPropParameterSetsStr,
+		    unsigned bufferSize, char const* perFrameFileNamePrefix);
+      // called only by createNew()
+  virtual ~H264VideoFileSink();
+};
+
+#endif
diff --git a/liveMedia/include/H264VideoRTPSink.hh b/liveMedia/include/H264VideoRTPSink.hh
new file mode 100644
index 0000000..6ed8cbb
--- /dev/null
+++ b/liveMedia/include/H264VideoRTPSink.hh
@@ -0,0 +1,59 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for H.264 video (RFC 3984)
+// C++ header
+
+#ifndef _H264_VIDEO_RTP_SINK_HH
+#define _H264_VIDEO_RTP_SINK_HH
+
+#ifndef _H264_OR_5_VIDEO_RTP_SINK_HH
+#include "H264or5VideoRTPSink.hh"
+#endif
+
+class H264VideoRTPSink: public H264or5VideoRTPSink {
+public:
+  static H264VideoRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat);
+  static H264VideoRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+	    u_int8_t const* sps, unsigned spsSize, u_int8_t const* pps, unsigned ppsSize);
+    // an optional variant of "createNew()", useful if we know, in advance,
+    // the stream's SPS and PPS NAL units.
+    // This avoids us having to 'pre-read' from the input source in order to get these values.
+  static H264VideoRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+	    char const* sPropParameterSetsStr);
+    // an optional variant of "createNew()", useful if we know, in advance,
+    // the stream's SPS and PPS NAL units.
+    // This avoids us having to 'pre-read' from the input source in order to get these values.
+
+protected:
+  H264VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+		   u_int8_t const* sps = NULL, unsigned spsSize = 0,
+		   u_int8_t const* pps = NULL, unsigned ppsSize = 0);
+	// called only by createNew()
+  virtual ~H264VideoRTPSink();
+
+protected: // redefined virtual functions:
+  virtual char const* auxSDPLine();
+
+private: // redefined virtual functions:
+  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+};
+
+#endif
diff --git a/liveMedia/include/H264VideoRTPSource.hh b/liveMedia/include/H264VideoRTPSource.hh
new file mode 100644
index 0000000..22f9ce1
--- /dev/null
+++ b/liveMedia/include/H264VideoRTPSource.hh
@@ -0,0 +1,70 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.264 Video RTP Sources
+// C++ header
+
+#ifndef _H264_VIDEO_RTP_SOURCE_HH
+#define _H264_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class H264VideoRTPSource: public MultiFramedRTPSource {
+public:
+  static H264VideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency = 90000);
+
+protected:
+  H264VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			 unsigned char rtpPayloadFormat,
+			 unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+  virtual ~H264VideoRTPSource();
+
+protected:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  friend class H264BufferedPacket;
+  unsigned char fCurPacketNALUnitType;
+};
+
+class SPropRecord {
+public:
+  ~SPropRecord() { delete[] sPropBytes; }
+
+  unsigned sPropLength; // in bytes
+  unsigned char* sPropBytes;
+};
+
+SPropRecord* parseSPropParameterSets(char const* sPropParameterSetsStr,
+				     // result parameter:
+				     unsigned& numSPropRecords);
+    // Returns the binary value of each 'parameter set' specified in a
+    // "sprop-parameter-sets" string (in the SDP description for a H.264/RTP stream).
+    // The value is returned as an array (length "numSPropRecords") of "SPropRecord"s.
+    // This array is dynamically allocated by this routine, and must be delete[]d by the caller.
+
+#endif
diff --git a/liveMedia/include/H264VideoStreamDiscreteFramer.hh b/liveMedia/include/H264VideoStreamDiscreteFramer.hh
new file mode 100644
index 0000000..6895c25
--- /dev/null
+++ b/liveMedia/include/H264VideoStreamDiscreteFramer.hh
@@ -0,0 +1,48 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simplified version of "H264VideoStreamFramer" that takes only complete,
+// discrete frames (rather than an arbitrary byte stream) as input.
+// This avoids the parsing and data copying overhead of the full
+// "H264VideoStreamFramer".
+// C++ header
+
+#ifndef _H264_VIDEO_STREAM_DISCRETE_FRAMER_HH
+#define _H264_VIDEO_STREAM_DISCRETE_FRAMER_HH
+
+#ifndef _H264_OR_5_VIDEO_STREAM_DISCRETE_FRAMER_HH
+#include "H264or5VideoStreamDiscreteFramer.hh"
+#endif
+
+class H264VideoStreamDiscreteFramer: public H264or5VideoStreamDiscreteFramer {
+public:
+  static H264VideoStreamDiscreteFramer*
+  createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    Boolean includeStartCodeInOutput = False, Boolean insertAccessUnitDelimiters = False);
+
+protected:
+  H264VideoStreamDiscreteFramer(UsageEnvironment& env, FramedSource* inputSource,
+				Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters);
+      // called only by createNew()
+  virtual ~H264VideoStreamDiscreteFramer();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isH264VideoStreamFramer() const;
+};
+
+#endif
diff --git a/liveMedia/include/H264VideoStreamFramer.hh b/liveMedia/include/H264VideoStreamFramer.hh
new file mode 100644
index 0000000..36273e2
--- /dev/null
+++ b/liveMedia/include/H264VideoStreamFramer.hh
@@ -0,0 +1,45 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up a H.264 Video Elementary Stream into NAL units.
+// C++ header
+
+#ifndef _H264_VIDEO_STREAM_FRAMER_HH
+#define _H264_VIDEO_STREAM_FRAMER_HH
+
+#ifndef _H264_OR_5_VIDEO_STREAM_FRAMER_HH
+#include "H264or5VideoStreamFramer.hh"
+#endif
+
+class H264VideoStreamFramer: public H264or5VideoStreamFramer {
+public:
+  static H264VideoStreamFramer* createNew(UsageEnvironment& env, FramedSource* inputSource,
+					  Boolean includeStartCodeInOutput = False,
+					  Boolean insertAccessUnitDelimiters = False);
+
+protected:
+  H264VideoStreamFramer(UsageEnvironment& env, FramedSource* inputSource,
+			Boolean createParser,
+			Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters);
+      // called only by "createNew()"
+  virtual ~H264VideoStreamFramer();
+
+  // redefined virtual functions:
+  virtual Boolean isH264VideoStreamFramer() const;
+};
+
+#endif
diff --git a/liveMedia/include/H264or5VideoFileSink.hh b/liveMedia/include/H264or5VideoFileSink.hh
new file mode 100644
index 0000000..e9dc860
--- /dev/null
+++ b/liveMedia/include/H264or5VideoFileSink.hh
@@ -0,0 +1,46 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.264 or H.265 Video File Sinks
+// C++ header
+
+#ifndef _H264_OR_5_VIDEO_FILE_SINK_HH
+#define _H264_OR_5_VIDEO_FILE_SINK_HH
+
+#ifndef _FILE_SINK_HH
+#include "FileSink.hh"
+#endif
+
+class H264or5VideoFileSink: public FileSink {
+protected:
+  H264or5VideoFileSink(UsageEnvironment& env, FILE* fid,
+		       unsigned bufferSize, char const* perFrameFileNamePrefix,
+		       char const* sPropParameterSetsStr1,
+		       char const* sPropParameterSetsStr2 = NULL,
+		       char const* sPropParameterSetsStr3 = NULL);
+      // we're an abstract base class
+  virtual ~H264or5VideoFileSink();
+
+protected: // redefined virtual functions:
+  virtual void afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime);
+
+private:
+  char const* fSPropParameterSetsStr[3];
+  Boolean fHaveWrittenFirstFrame;
+};
+
+#endif
diff --git a/liveMedia/include/H264or5VideoRTPSink.hh b/liveMedia/include/H264or5VideoRTPSink.hh
new file mode 100644
index 0000000..3a979ef
--- /dev/null
+++ b/liveMedia/include/H264or5VideoRTPSink.hh
@@ -0,0 +1,60 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for H.264 or H.265 video
+// C++ header
+
+#ifndef _H264_OR_5_VIDEO_RTP_SINK_HH
+#define _H264_OR_5_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+class H264or5VideoRTPSink: public VideoRTPSink {
+protected:
+  H264or5VideoRTPSink(int hNumber, // 264 or 265
+		      UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+		      u_int8_t const* vps = NULL, unsigned vpsSize = 0,
+		      u_int8_t const* sps = NULL, unsigned spsSize = 0,
+		      u_int8_t const* pps = NULL, unsigned ppsSize = 0);
+	// we're an abstrace base class
+  virtual ~H264or5VideoRTPSink();
+
+private: // redefined virtual functions:
+  virtual Boolean continuePlaying();
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+						 unsigned numBytesInFrame) const;
+
+protected:
+  int fHNumber;
+  FramedFilter* fOurFragmenter;
+  char* fFmtpSDPLine;
+  u_int8_t* fVPS; unsigned fVPSSize;
+  u_int8_t* fSPS; unsigned fSPSSize;
+  u_int8_t* fPPS; unsigned fPPSSize;
+};
+
+#endif
diff --git a/liveMedia/include/H264or5VideoStreamDiscreteFramer.hh b/liveMedia/include/H264or5VideoStreamDiscreteFramer.hh
new file mode 100644
index 0000000..444fea4
--- /dev/null
+++ b/liveMedia/include/H264or5VideoStreamDiscreteFramer.hh
@@ -0,0 +1,56 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simplified version of "H264or5VideoStreamFramer" that takes only complete,
+// discrete frames (rather than an arbitrary byte stream) as input.
+// This avoids the parsing and data copying overhead of the full
+// "H264or5VideoStreamFramer".
+// C++ header
+
+#ifndef _H264_OR_5_VIDEO_STREAM_DISCRETE_FRAMER_HH
+#define _H264_OR_5_VIDEO_STREAM_DISCRETE_FRAMER_HH
+
+#ifndef _H264_OR_5_VIDEO_STREAM_FRAMER_HH
+#include "H264or5VideoStreamFramer.hh"
+#endif
+
+class H264or5VideoStreamDiscreteFramer: public H264or5VideoStreamFramer {
+protected:
+  H264or5VideoStreamDiscreteFramer(int hNumber, UsageEnvironment& env, FramedSource* inputSource,
+				   Boolean includeStartCodeInOutput,
+				   Boolean insertAccessUnitDelimiters);
+      // we're an abstract base class
+  virtual ~H264or5VideoStreamDiscreteFramer();
+
+protected:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+protected:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+                          unsigned numTruncatedBytes,
+                          struct timeval presentationTime,
+                          unsigned durationInMicroseconds);
+
+  virtual Boolean nalUnitEndsAccessUnit(u_int8_t nal_unit_type);
+};
+
+#endif
diff --git a/liveMedia/include/H264or5VideoStreamFramer.hh b/liveMedia/include/H264or5VideoStreamFramer.hh
new file mode 100644
index 0000000..5813f84
--- /dev/null
+++ b/liveMedia/include/H264or5VideoStreamFramer.hh
@@ -0,0 +1,92 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up a H.264 or H.265 Video Elementary Stream into NAL units.
+// C++ header
+
+#ifndef _H264_OR_5_VIDEO_STREAM_FRAMER_HH
+#define _H264_OR_5_VIDEO_STREAM_FRAMER_HH
+
+#ifndef _MPEG_VIDEO_STREAM_FRAMER_HH
+#include "MPEGVideoStreamFramer.hh"
+#endif
+
+class H264or5VideoStreamFramer: public MPEGVideoStreamFramer {
+public:
+  void getVPSandSPSandPPS(u_int8_t*& vps, unsigned& vpsSize,
+			  u_int8_t*& sps, unsigned& spsSize,
+			  u_int8_t*& pps, unsigned& ppsSize) const {
+    // Returns pointers to copies of the most recently seen VPS (video parameter set)
+    // SPS (sequence parameter set) and PPS (picture parameter set) NAL units.
+    // (NULL pointers are returned if the NAL units have not yet been seen.)
+    vps = fLastSeenVPS; vpsSize = fLastSeenVPSSize;
+    sps = fLastSeenSPS; spsSize = fLastSeenSPSSize;
+    pps = fLastSeenPPS; ppsSize = fLastSeenPPSSize;
+  }
+
+  void setVPSandSPSandPPS(u_int8_t* vps, unsigned vpsSize,
+			  u_int8_t* sps, unsigned spsSize,
+			  u_int8_t* pps, unsigned ppsSize) {
+    // Assigns copies of the VPS, SPS and PPS NAL units.  If this function is not called,
+    // then these NAL units are assigned only if/when they appear in the input stream.
+    saveCopyOfVPS(vps, vpsSize);
+    saveCopyOfSPS(sps, spsSize);
+    saveCopyOfPPS(pps, ppsSize);
+  }
+
+protected:
+  H264or5VideoStreamFramer(int hNumber, // 264 or 265
+			   UsageEnvironment& env, FramedSource* inputSource,
+			   Boolean createParser,
+			   Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters);
+      // We're an abstract base class.
+  virtual ~H264or5VideoStreamFramer();
+
+  void saveCopyOfVPS(u_int8_t* from, unsigned size);
+  void saveCopyOfSPS(u_int8_t* from, unsigned size);
+  void saveCopyOfPPS(u_int8_t* from, unsigned size);
+
+  void setPresentationTime();
+
+  Boolean isVPS(u_int8_t nal_unit_type);
+  Boolean isSPS(u_int8_t nal_unit_type);
+  Boolean isPPS(u_int8_t nal_unit_type);
+  Boolean isVCL(u_int8_t nal_unit_type);
+
+protected: // redefined virtual functions
+  virtual void doGetNextFrame();
+
+protected:
+  int fHNumber;
+  Boolean fIncludeStartCodeInOutput, fInsertAccessUnitDelimiters;
+  u_int8_t* fLastSeenVPS;
+  unsigned fLastSeenVPSSize;
+  u_int8_t* fLastSeenSPS;
+  unsigned fLastSeenSPSSize;
+  u_int8_t* fLastSeenPPS;
+  unsigned fLastSeenPPSSize;
+  struct timeval fNextPresentationTime; // the presentation time to be used for the next NAL unit to be parsed/delivered after this
+  friend class H264or5VideoStreamParser; // hack
+};
+
+// A general routine for making a copy of a (H.264 or H.265) NAL unit,
+// removing 'emulation' bytes from the copy:
+unsigned removeH264or5EmulationBytes(u_int8_t* to, unsigned toMaxSize,
+				     u_int8_t const* from, unsigned fromSize);
+    // returns the size of the copy; it will be <= min(toMaxSize,fromSize)
+
+#endif
diff --git a/liveMedia/include/H265VideoFileServerMediaSubsession.hh b/liveMedia/include/H265VideoFileServerMediaSubsession.hh
new file mode 100644
index 0000000..388258c
--- /dev/null
+++ b/liveMedia/include/H265VideoFileServerMediaSubsession.hh
@@ -0,0 +1,61 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a H265 Elementary Stream video file.
+// C++ header
+
+#ifndef _H265_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _H265_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+
+class H265VideoFileServerMediaSubsession: public FileServerMediaSubsession {
+public:
+  static H265VideoFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource);
+
+  // Used to implement "getAuxSDPLine()":
+  void checkForAuxSDPLine1();
+  void afterPlayingDummy1();
+
+protected:
+  H265VideoFileServerMediaSubsession(UsageEnvironment& env,
+				      char const* fileName, Boolean reuseFirstSource);
+      // called only by createNew();
+  virtual ~H265VideoFileServerMediaSubsession();
+
+  void setDoneFlag() { fDoneFlag = ~0; }
+
+protected: // redefined virtual functions
+  virtual char const* getAuxSDPLine(RTPSink* rtpSink,
+				    FramedSource* inputSource);
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+
+private:
+  char* fAuxSDPLine;
+  char fDoneFlag; // used when setting up "fAuxSDPLine"
+  RTPSink* fDummyRTPSink; // ditto
+};
+
+#endif
diff --git a/liveMedia/include/H265VideoFileSink.hh b/liveMedia/include/H265VideoFileSink.hh
new file mode 100644
index 0000000..1316d7d
--- /dev/null
+++ b/liveMedia/include/H265VideoFileSink.hh
@@ -0,0 +1,51 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.265 Video File Sinks
+// C++ header
+
+#ifndef _H265_VIDEO_FILE_SINK_HH
+#define _H265_VIDEO_FILE_SINK_HH
+
+#ifndef _H264_OR_5_VIDEO_FILE_SINK_HH
+#include "H264or5VideoFileSink.hh"
+#endif
+
+class H265VideoFileSink: public H264or5VideoFileSink {
+public:
+  static H265VideoFileSink* createNew(UsageEnvironment& env, char const* fileName,
+				      char const* sPropVPSStr = NULL,
+				      char const* sPropSPSStr = NULL,
+				      char const* sPropPPSStr = NULL,
+      // The "sProp*Str" parameters are optional 'SDP format' strings
+      // (comma-separated Base64-encoded) representing VPS, SPS, and/or PPS NAL-units
+      // to prepend to the output
+				      unsigned bufferSize = 100000,
+				      Boolean oneFilePerFrame = False);
+      // See "FileSink.hh" for a description of these parameters.
+
+protected:
+  H265VideoFileSink(UsageEnvironment& env, FILE* fid,
+		    char const* sPropVPSStr,
+		    char const* sPropSPSStr,
+		    char const* sPropPPSStr,
+		    unsigned bufferSize, char const* perFrameFileNamePrefix);
+      // called only by createNew()
+  virtual ~H265VideoFileSink();
+};
+
+#endif
diff --git a/liveMedia/include/H265VideoRTPSink.hh b/liveMedia/include/H265VideoRTPSink.hh
new file mode 100644
index 0000000..ad01160
--- /dev/null
+++ b/liveMedia/include/H265VideoRTPSink.hh
@@ -0,0 +1,62 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for H.265 video
+// C++ header
+
+#ifndef _H265_VIDEO_RTP_SINK_HH
+#define _H265_VIDEO_RTP_SINK_HH
+
+#ifndef _H264_OR_5_VIDEO_RTP_SINK_HH
+#include "H264or5VideoRTPSink.hh"
+#endif
+
+class H265VideoRTPSink: public H264or5VideoRTPSink {
+public:
+  static H265VideoRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat);
+  static H265VideoRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+	    u_int8_t const* vps, unsigned vpsSize,
+	    u_int8_t const* sps, unsigned spsSize,
+	    u_int8_t const* pps, unsigned ppsSize);
+    // an optional variant of "createNew()", useful if we know, in advance,
+    // the stream's VPS, SPS and PPS NAL units.
+    // This avoids us having to 'pre-read' from the input source in order to get these values.
+  static H265VideoRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+	    char const* sPropVPSStr, char const* sPropSPSStr, char const* sPropPPSStr);
+    // an optional variant of "createNew()", useful if we know, in advance,
+    // the stream's VPS, SPS and PPS NAL units.
+    // This avoids us having to 'pre-read' from the input source in order to get these values.
+
+protected:
+  H265VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+		   u_int8_t const* vps = NULL, unsigned vpsSize = 0,
+		   u_int8_t const* sps = NULL, unsigned spsSize = 0,
+		   u_int8_t const* pps = NULL, unsigned ppsSize = 0);
+	// called only by createNew()
+  virtual ~H265VideoRTPSink();
+
+protected: // redefined virtual functions:
+  virtual char const* auxSDPLine();
+
+private: // redefined virtual functions:
+  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+};
+
+#endif
diff --git a/liveMedia/include/H265VideoRTPSource.hh b/liveMedia/include/H265VideoRTPSource.hh
new file mode 100644
index 0000000..3131e7b
--- /dev/null
+++ b/liveMedia/include/H265VideoRTPSource.hh
@@ -0,0 +1,67 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// H.265 Video RTP Sources
+// C++ header
+
+#ifndef _H265_VIDEO_RTP_SOURCE_HH
+#define _H265_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class H265VideoRTPSource: public MultiFramedRTPSource {
+public:
+  static H265VideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    Boolean expectDONFields = False,
+	    unsigned rtpTimestampFrequency = 90000);
+      // "expectDONFields" is True iff we expect incoming H.265/RTP packets to contain
+      // DONL and DOND fields.  I.e., if "tx-mode == "MST" or sprop-depack-buf-nalus > 0".
+
+  u_int64_t currentNALUnitAbsDon() const { return fCurrentNALUnitAbsDon; }
+      // the 'absolute decoding order number (AbsDon)' for the most-recently delivered NAL unit
+
+protected:
+  H265VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     Boolean expectDONFields,		     
+		     unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+  virtual ~H265VideoRTPSource();
+
+protected:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  void computeAbsDonFromDON(u_int16_t DON);
+
+private:
+  friend class H265BufferedPacket;
+  Boolean fExpectDONFields;
+  unsigned char fCurPacketNALUnitType;
+  u_int16_t fPreviousNALUnitDON;
+  u_int64_t fCurrentNALUnitAbsDon;
+};
+
+#endif
diff --git a/liveMedia/include/H265VideoStreamDiscreteFramer.hh b/liveMedia/include/H265VideoStreamDiscreteFramer.hh
new file mode 100644
index 0000000..b621cc9
--- /dev/null
+++ b/liveMedia/include/H265VideoStreamDiscreteFramer.hh
@@ -0,0 +1,48 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simplified version of "H265VideoStreamFramer" that takes only complete,
+// discrete frames (rather than an arbitrary byte stream) as input.
+// This avoids the parsing and data copying overhead of the full
+// "H265VideoStreamFramer".
+// C++ header
+
+#ifndef _H265_VIDEO_STREAM_DISCRETE_FRAMER_HH
+#define _H265_VIDEO_STREAM_DISCRETE_FRAMER_HH
+
+#ifndef _H264_OR_5_VIDEO_STREAM_DISCRETE_FRAMER_HH
+#include "H264or5VideoStreamDiscreteFramer.hh"
+#endif
+
+class H265VideoStreamDiscreteFramer: public H264or5VideoStreamDiscreteFramer {
+public:
+  static H265VideoStreamDiscreteFramer*
+  createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    Boolean includeStartCodeInOutput = False, Boolean insertAccessUnitDelimiters = False);
+
+protected:
+  H265VideoStreamDiscreteFramer(UsageEnvironment& env, FramedSource* inputSource,
+				Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters);
+      // called only by createNew()
+  virtual ~H265VideoStreamDiscreteFramer();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isH265VideoStreamFramer() const;
+};
+
+#endif
diff --git a/liveMedia/include/H265VideoStreamFramer.hh b/liveMedia/include/H265VideoStreamFramer.hh
new file mode 100644
index 0000000..122f390
--- /dev/null
+++ b/liveMedia/include/H265VideoStreamFramer.hh
@@ -0,0 +1,45 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up a H.265 Video Elementary Stream into NAL units.
+// C++ header
+
+#ifndef _H265_VIDEO_STREAM_FRAMER_HH
+#define _H265_VIDEO_STREAM_FRAMER_HH
+
+#ifndef _H264_OR_5_VIDEO_STREAM_FRAMER_HH
+#include "H264or5VideoStreamFramer.hh"
+#endif
+
+class H265VideoStreamFramer: public H264or5VideoStreamFramer {
+public:
+  static H265VideoStreamFramer* createNew(UsageEnvironment& env, FramedSource* inputSource,
+					  Boolean includeStartCodeInOutput = False,
+					  Boolean insertAccessUnitDelimiters = False);
+
+protected:
+  H265VideoStreamFramer(UsageEnvironment& env, FramedSource* inputSource,
+			Boolean createParser,
+			Boolean includeStartCodeInOutput, Boolean insertAccessUnitDelimiters);
+      // called only by "createNew()"
+  virtual ~H265VideoStreamFramer();
+
+  // redefined virtual functions:
+  virtual Boolean isH265VideoStreamFramer() const;
+};
+
+#endif
diff --git a/liveMedia/include/HLSSegmenter.hh b/liveMedia/include/HLSSegmenter.hh
new file mode 100644
index 0000000..a6fa2bc
--- /dev/null
+++ b/liveMedia/include/HLSSegmenter.hh
@@ -0,0 +1,76 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A media sink that takes - as input - a MPEG Transport Stream, and outputs a series
+// of MPEG Transport Stream files, each representing a segment of the input stream,
+// suitable for HLS (Apple's "HTTP Live Streaming").
+// C++ header
+
+#ifndef _HLS_SEGMENTER_HH
+#define _HLS_SEGMENTER_HH
+
+#ifndef _MEDIA_SINK_HH
+#include "MediaSink.hh"
+#endif
+
+class HLSSegmenter: public MediaSink {
+public:
+  typedef void (onEndOfSegmentFunc)(void* clientData,
+				    char const* segmentFileName, double segmentDuration);
+  static HLSSegmenter* createNew(UsageEnvironment& env,
+				 unsigned segmentationDuration, char const* fileNamePrefix,
+				 onEndOfSegmentFunc* onEndOfSegmentFunc = NULL,
+				 void* onEndOfSegmentClientData = NULL);
+
+private:
+  HLSSegmenter(UsageEnvironment& env, unsigned segmentationDuration, char const* fileNamePrefix,
+	       onEndOfSegmentFunc* onEndOfSegmentFunc, void* onEndOfSegmentClientData);
+    // called only by createNew()
+  virtual ~HLSSegmenter();
+
+  static void ourEndOfSegmentHandler(void* clientData, double segmentDuration);
+  void ourEndOfSegmentHandler(double segmentDuration);
+
+  Boolean openNextOutputSegment();
+
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  virtual void afterGettingFrame(unsigned frameSize,
+                                 unsigned numTruncatedBytes);
+
+  static void ourOnSourceClosure(void* clientData);
+  void ourOnSourceClosure();
+
+private: // redefined virtual functions:
+  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+  virtual Boolean continuePlaying();
+
+private:
+  unsigned fSegmentationDuration;
+  char const* fFileNamePrefix;
+  onEndOfSegmentFunc* fOnEndOfSegmentFunc;
+  void* fOnEndOfSegmentClientData;
+  Boolean fHaveConfiguredUpstreamSource;
+  unsigned fCurrentSegmentCounter;
+  char* fOutputSegmentFileName;
+  FILE* fOutFid;
+  unsigned char* fOutputFileBuffer;
+};
+
+#endif
diff --git a/liveMedia/include/HMAC_SHA1.hh b/liveMedia/include/HMAC_SHA1.hh
new file mode 100644
index 0000000..0b10dd7
--- /dev/null
+++ b/liveMedia/include/HMAC_SHA1.hh
@@ -0,0 +1,19 @@
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// This code may not be copied or used in any form without permission from Live Networks, Inc.
+//
+// A function for computing the HMAC_SHA1 digest
+// Definition
+
+#ifndef _HMAC_SHA1_HH
+#define _HMAC_SHA1_HH
+
+#ifndef NO_OPENSSL
+#ifndef _HMAC_HASH_HH
+#include "HMAC_hash.hh"
+#endif
+
+#define SHA1_DIGEST_LEN 20
+
+HMAC_hash HMAC_SHA1;
+#endif
+#endif
diff --git a/liveMedia/include/HMAC_hash.hh b/liveMedia/include/HMAC_hash.hh
new file mode 100644
index 0000000..5cef9c3
--- /dev/null
+++ b/liveMedia/include/HMAC_hash.hh
@@ -0,0 +1,22 @@
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// This code may not be copied or used in any form without permission from Live Networks, Inc.
+//
+// Generic HMA_HASH functions
+// Definition
+
+#ifndef _HMAC_HASH_HH
+#define _HMAC_HASH_HH
+
+#ifndef _NET_COMMON_H
+#include "NetCommon.h"
+#endif
+
+// All HMAC hash functions have the following signature:
+typedef void HMAC_hash(u_int8_t const* key, unsigned keyLength,
+		       u_int8_t const* text, unsigned textLength,
+		       u_int8_t* resultDigest);
+    // "resultDigest" must point to an array of sufficient size to hold the digest
+
+#define HMAC_BLOCK_SIZE 64
+
+#endif
diff --git a/liveMedia/include/InputFile.hh b/liveMedia/include/InputFile.hh
new file mode 100644
index 0000000..176c5ed
--- /dev/null
+++ b/liveMedia/include/InputFile.hh
@@ -0,0 +1,67 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Common routines for opening/closing named input files
+// C++ header
+
+#ifndef _INPUT_FILE_HH
+#define _INPUT_FILE_HH
+
+#include <UsageEnvironment.hh>
+#include <stdio.h>
+
+#if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_WCE))
+#ifndef _WIN32_WCE
+// Include header files that might be needed by Windows (in code that uses this header file):
+#include <io.h>
+#include <fcntl.h>
+#endif
+
+#define READ_FROM_FILES_SYNCHRONOUSLY 1
+    // Because Windows is a silly toy operating system that doesn't (reliably) treat
+    // open files as being readable sockets (which can be handled within the default
+    // "BasicTaskScheduler" event loop, using "select()"), we implement file reading
+    // in Windows using synchronous, rather than asynchronous, I/O.  This can severely
+    // limit the scalability of servers using this code that run on Windows.
+    // If this is a problem for you, then either use a better operating system,
+    // or else write your own Windows-specific event loop ("TaskScheduler" subclass)
+    // that can handle readable data in Windows open files as an event.
+#endif
+
+#ifndef _WIN32_WCE
+#include <sys/stat.h>
+#endif
+
+FILE* OpenInputFile(UsageEnvironment& env, char const* fileName);
+
+void CloseInputFile(FILE* fid);
+
+#undef GetFileSize // because some platforms already define this as a macro
+u_int64_t GetFileSize(char const* fileName, FILE* fid);
+    // 0 means zero-length, unbounded, or unknown
+
+int64_t SeekFile64(FILE *fid, int64_t offset, int whence);
+    // A platform-independent routine for seeking within (possibly) large files
+
+int64_t TellFile64(FILE *fid);
+    // A platform-independent routine for reporting the position within
+    // (possibly) large files
+
+Boolean FileIsSeekable(FILE *fid);
+    // Tests whether "fid" is seekable, by trying to seek within it.
+
+#endif
diff --git a/liveMedia/include/JPEG2000VideoRTPSink.hh b/liveMedia/include/JPEG2000VideoRTPSink.hh
new file mode 100644
index 0000000..c726fd3
--- /dev/null
+++ b/liveMedia/include/JPEG2000VideoRTPSink.hh
@@ -0,0 +1,46 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+
+
+#ifndef _JPEG2000_VIDEO_RTP_SINK_HH
+#define _JPEG2000_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+
+class JPEG2000VideoRTPSink: public VideoRTPSink {
+public:
+  static JPEG2000VideoRTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs);
+
+protected:
+  JPEG2000VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs);
+	// called only by createNew()
+
+  virtual ~JPEG2000VideoRTPSink();
+
+private: // redefined virtual functions:
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual unsigned specialHeaderSize() const;
+};
+
+#endif
diff --git a/liveMedia/include/JPEG2000VideoRTPSource.hh b/liveMedia/include/JPEG2000VideoRTPSource.hh
new file mode 100644
index 0000000..ca243d2
--- /dev/null
+++ b/liveMedia/include/JPEG2000VideoRTPSource.hh
@@ -0,0 +1,53 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+
+#ifndef _JPEG2000_VIDEO_RTP_SOURCE_HH
+#define _JPEG2000_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class JPEG2000VideoRTPSource: public MultiFramedRTPSource {
+public:
+  static JPEG2000VideoRTPSource* createNew(UsageEnvironment& env, Groupsock* RTPgs,
+					   unsigned char rtpPayloadFormat,
+					   unsigned rtpTimestampFrequency,
+					   char const* sampling);
+
+protected:
+  virtual ~JPEG2000VideoRTPSource();
+
+protected:
+  JPEG2000VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			 unsigned char rtpPayloadFormat,
+			 unsigned rtpTimestampFrequency,
+			 char const* sampling);
+    // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  char* fSampling;
+};
+
+#endif
diff --git a/liveMedia/include/JPEGVideoRTPSink.hh b/liveMedia/include/JPEGVideoRTPSink.hh
new file mode 100644
index 0000000..9464be4
--- /dev/null
+++ b/liveMedia/include/JPEGVideoRTPSink.hh
@@ -0,0 +1,52 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for JPEG video (RFC 2435)
+// C++ header
+
+#ifndef _JPEG_VIDEO_RTP_SINK_HH
+#define _JPEG_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+
+class JPEGVideoRTPSink: public VideoRTPSink {
+public:
+  static JPEGVideoRTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs);
+
+protected:
+  JPEGVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs);
+	// called only by createNew()
+
+  virtual ~JPEGVideoRTPSink();
+
+private: // redefined virtual functions:
+  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual
+  Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+					 unsigned numBytesInFrame) const;
+  virtual unsigned specialHeaderSize() const;
+};
+
+#endif
diff --git a/liveMedia/include/JPEGVideoRTPSource.hh b/liveMedia/include/JPEGVideoRTPSource.hh
new file mode 100644
index 0000000..d6a0fcb
--- /dev/null
+++ b/liveMedia/include/JPEGVideoRTPSource.hh
@@ -0,0 +1,59 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// JPEG Video (RFC 2435) RTP Sources
+// C++ header
+
+#ifndef _JPEG_VIDEO_RTP_SOURCE_HH
+#define _JPEG_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+#define MAX_JPEG_HEADER_SIZE 1024
+
+class JPEGVideoRTPSource: public MultiFramedRTPSource {
+public:
+  static JPEGVideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat = 26,
+	    unsigned rtpPayloadFrequency = 90000,
+	    unsigned defaultWidth = 0, unsigned defaultHeight = 0);
+
+protected:
+  virtual ~JPEGVideoRTPSource();
+
+private:
+  JPEGVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     unsigned rtpTimestampFrequency,
+		     unsigned defaultWidth, unsigned defaultHeight);
+      // called only by createNew()
+
+  // Image dimensions from the SDP description, if any
+  unsigned fDefaultWidth, fDefaultHeight;
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+
+  virtual char const* MIMEtype() const;
+};
+
+#endif
diff --git a/liveMedia/include/JPEGVideoSource.hh b/liveMedia/include/JPEGVideoSource.hh
new file mode 100644
index 0000000..7a7084d
--- /dev/null
+++ b/liveMedia/include/JPEGVideoSource.hh
@@ -0,0 +1,55 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// JPEG video sources
+// C++ header
+
+#ifndef _JPEG_VIDEO_SOURCE_HH
+#define _JPEG_VIDEO_SOURCE_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class JPEGVideoSource: public FramedSource {
+public:
+  virtual u_int8_t type() = 0;
+  virtual u_int8_t qFactor() = 0;
+  virtual u_int8_t width() = 0; // # pixels/8 (or 0 for 2048 pixels)
+  virtual u_int8_t height() = 0; // # pixels/8 (or 0 for 2048 pixels)
+
+  virtual u_int8_t const* quantizationTables(u_int8_t& precision,
+					     u_int16_t& length);
+    // If "qFactor()" returns a value >= 128, then this function is called
+    // to tell us the quantization tables that are being used.
+    // (The default implementation of this function just returns NULL.)
+    // "precision" and "length" are as defined in RFC 2435, section 3.1.8.
+
+  virtual u_int16_t restartInterval();
+    // If restart intervals are being used (i.e., 64 <= type() <= 127), then this function must be
+    // redefined - by a subclass - to return a non-zero value.
+
+protected:
+  JPEGVideoSource(UsageEnvironment& env); // abstract base class
+  virtual ~JPEGVideoSource();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isJPEGVideoSource() const;
+};
+
+#endif
diff --git a/liveMedia/include/Locale.hh b/liveMedia/include/Locale.hh
new file mode 100644
index 0000000..a3ab3aa
--- /dev/null
+++ b/liveMedia/include/Locale.hh
@@ -0,0 +1,75 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Support for temporarily setting the locale (e.g., to "C" or "POSIX") for (e.g.) parsing or printing
+// floating-point numbers in protocol headers, or calling toupper()/tolower() on human-input strings.
+// C++ header
+
+#ifndef _LOCALE_HH
+#define _LOCALE_HH
+
+// If you're on a system that (for whatever reason) doesn't have either the "setlocale()" or the "newlocale()" function, then
+// add "-DLOCALE_NOT_USED" to your "config.*" file.
+
+// If you're on a system that (for whatever reason) has "setlocale()" but not "newlocale()", then
+// add "-DNEWLOCALE_NOT_USED" to your "config.*" file.
+// (Note that -DLOCALE_NOT_USED implies -DNEWLOCALE_NOT_USED; you do not need both.)
+// Also, for Windows systems, we define "NEWLOCALE_NOT_USED" by default, because at least some Windows systems
+// (or their development environments) don't have "newlocale()".  If, however, your Windows system *does* have "newlocale()",
+// then you can override this by defining "NEWLOCALE_USED" before #including this file.
+
+// Finally, some old development environments need a header file "xlocale.h" to use "newlocale()".
+// Should you need this header file, add "-DNEED_XLOCALE_H" to your "config.*" file.
+
+#ifdef NEWLOCALE_USED
+#undef LOCALE_NOT_USED
+#undef NEWLOCALE_NOT_USED
+#else
+#if defined(__WIN32__) || defined(_WIN32)
+#define NEWLOCALE_NOT_USED 1
+#endif
+#endif
+
+#ifndef LOCALE_NOT_USED
+#include <locale.h>
+#ifndef NEWLOCALE_NOT_USED
+#ifdef NEED_XLOCALE_H
+#include <xlocale.h>
+#endif
+#endif
+#endif
+
+
+enum LocaleCategory { All, Numeric }; // define and implement more categories later, as needed
+
+class Locale {
+public:
+  Locale(char const* newLocale, LocaleCategory category = All);
+  virtual ~Locale();
+
+private:
+#ifndef LOCALE_NOT_USED
+#ifndef NEWLOCALE_NOT_USED
+  locale_t fLocale, fPrevLocale;
+#else
+  int fCategoryNum;
+  char* fPrevLocale;
+#endif
+#endif
+};
+
+#endif
diff --git a/liveMedia/include/MIKEY.hh b/liveMedia/include/MIKEY.hh
new file mode 100644
index 0000000..7eca0c6
--- /dev/null
+++ b/liveMedia/include/MIKEY.hh
@@ -0,0 +1,77 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A data structure that implements a MIKEY message (RFC 3830)
+// C++ header
+
+#ifndef _MIKEY_HH
+#define _MIKEY_HH
+
+#ifndef _NET_COMMON_H
+#include "NetCommon.h"
+#endif
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+
+class MIKEYState {
+public:
+  MIKEYState(); // initialize with default parameters
+  virtual ~MIKEYState();
+
+  static MIKEYState* createNew(u_int8_t* messageToParse, unsigned messageSize);
+      // (Attempts to) parse a binary MIKEY message, returning a new "MIKEYState" if successful
+      // (or NULL if unsuccessful).
+      // ("messageToParse" is assumed to have been dynamically allocated;
+      // this function will delete[] it.)
+
+  u_int8_t* generateMessage(unsigned& messageSize) const;
+      // Returns a binary message representing the current MIKEY state, of size "messageSize" bytes.
+      // This array is dynamically allocated by this routine, and must be delete[]d by the caller.
+
+  // Accessors for the encryption/authentication parameters:
+  Boolean encryptSRTP() const { return fEncryptSRTP; }
+  Boolean encryptSRTCP() const { return fEncryptSRTCP; }
+  u_int8_t const* keyData() const { return fKeyData; }
+  u_int32_t MKI() const { return fMKI; }
+  Boolean useAuthentication() const { return fUseAuthentication; }
+
+private:
+  MIKEYState(u_int8_t const* messageToParse, unsigned messageSize, Boolean& parsedOK);
+      // called only by "createNew()"
+
+  void addNewPayload(class MIKEYPayload* newPayload);
+  Boolean parseHDRPayload(u_int8_t const*& ptr, u_int8_t const* endPtr, u_int8_t& nextPayloadType);
+  Boolean parseNonHDRPayload(u_int8_t const*& ptr, u_int8_t const* endPtr, u_int8_t& nextPayloadType);
+  
+private:
+  // Encryption/authentication parameters, either set by default
+  // (if the first (parameterless) constructor is used), or set by parsing an input message
+  // (if the second constructor is used):
+  Boolean fEncryptSRTP;
+  Boolean fEncryptSRTCP;
+  u_int8_t fKeyData[16+14]; // encryption key + salt
+  u_int32_t fMKI; // used only if encryption is used. (We assume a MKI length of 4.)
+  Boolean fUseAuthentication;
+
+  // Our internal binary representation of the MIKEY payloads:
+  class MIKEYPayload* fHeaderPayload;
+  class MIKEYPayload* fTailPayload;
+  unsigned fTotalPayloadByteCount;
+};
+
+#endif
diff --git a/liveMedia/include/MP3ADU.hh b/liveMedia/include/MP3ADU.hh
new file mode 100644
index 0000000..8f55b17
--- /dev/null
+++ b/liveMedia/include/MP3ADU.hh
@@ -0,0 +1,94 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// 'ADU' MP3 streams (for improved loss-tolerance)
+// C++ header
+
+#ifndef _MP3_ADU_HH
+#define _MP3_ADU_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+class ADUFromMP3Source: public FramedFilter {
+public:
+  static ADUFromMP3Source* createNew(UsageEnvironment& env,
+				     FramedSource* inputSource,
+				     Boolean includeADUdescriptors = True);
+
+  void resetInput();
+      // This is called whenever there's a discontinuity in the input MP3 source
+      // (e.g., due to seeking within the source).  It causes any still-unprocessed
+      // MP3 frame data within our queue to be discarded, so that it does not
+      // erroneously get used by backpointers from the new MP3 frames.
+
+  Boolean setScaleFactor(int scale);
+
+protected:
+  ADUFromMP3Source(UsageEnvironment& env,
+		   FramedSource* inputSource,
+		   Boolean includeADUdescriptors);
+      // called only by createNew()
+  virtual ~ADUFromMP3Source();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual char const* MIMEtype() const;
+
+private:
+  Boolean doGetNextFrame1();
+
+private:
+  Boolean fAreEnqueueingMP3Frame;
+  class SegmentQueue* fSegments;
+  Boolean fIncludeADUdescriptors;
+  unsigned fTotalDataSizeBeforePreviousRead;
+  int fScale;
+  unsigned fFrameCounter;
+};
+
+class MP3FromADUSource: public FramedFilter {
+public:
+  static MP3FromADUSource* createNew(UsageEnvironment& env,
+				     FramedSource* inputSource,
+                                     Boolean includeADUdescriptors = True);
+
+protected:
+  MP3FromADUSource(UsageEnvironment& env,
+		   FramedSource* inputSource,
+		   Boolean includeADUdescriptors);
+      // called only by createNew()
+  virtual ~MP3FromADUSource();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual char const* MIMEtype() const;
+
+private:
+  Boolean needToGetAnADU();
+  void insertDummyADUsIfNecessary();
+  Boolean generateFrameFromHeadADU();
+
+private:
+  Boolean fAreEnqueueingADU;
+  class SegmentQueue* fSegments;
+};
+
+#endif
diff --git a/liveMedia/include/MP3ADURTPSink.hh b/liveMedia/include/MP3ADURTPSink.hh
new file mode 100644
index 0000000..d3faede
--- /dev/null
+++ b/liveMedia/include/MP3ADURTPSink.hh
@@ -0,0 +1,55 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for 'ADUized' MP3 frames ("mpa-robust")
+// C++ header
+
+#ifndef _MP3_ADU_RTP_SINK_HH
+#define _MP3_ADU_RTP_SINK_HH
+
+#ifndef _AUDIO_RTP_SINK_HH
+#include "AudioRTPSink.hh"
+#endif
+
+class MP3ADURTPSink: public AudioRTPSink {
+public:
+  static MP3ADURTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				  unsigned char RTPPayloadType);
+
+protected:
+  virtual ~MP3ADURTPSink();
+
+private:
+  MP3ADURTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		unsigned char RTPPayloadType);
+	// called only by createNew()
+
+
+private:
+  // Redefined virtual functions:
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual unsigned specialHeaderSize() const;
+
+private:
+  unsigned fCurADUSize; // used when fragmenting over multiple RTP packets
+};
+
+#endif
diff --git a/liveMedia/include/MP3ADURTPSource.hh b/liveMedia/include/MP3ADURTPSource.hh
new file mode 100644
index 0000000..c5b5125
--- /dev/null
+++ b/liveMedia/include/MP3ADURTPSource.hh
@@ -0,0 +1,49 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP source for 'ADUized' MP3 frames ("mpa-robust")
+// C++ header
+
+#ifndef _MP3_ADU_SOURCE_HH
+#define _MP3_ADU_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class MP3ADURTPSource: public MultiFramedRTPSource {
+public:
+  static MP3ADURTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency = 90000);
+
+protected:
+  virtual ~MP3ADURTPSource();
+
+private:
+  MP3ADURTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		  unsigned char rtpPayloadFormat,
+		  unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual char const* MIMEtype() const;
+};
+
+#endif
diff --git a/liveMedia/include/MP3ADUTranscoder.hh b/liveMedia/include/MP3ADUTranscoder.hh
new file mode 100644
index 0000000..775ceef
--- /dev/null
+++ b/liveMedia/include/MP3ADUTranscoder.hh
@@ -0,0 +1,64 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Transcoder for ADUized MP3 frames
+// C++ header
+
+#ifndef _MP3_ADU_TRANSCODER_HH
+#define _MP3_ADU_TRANSCODER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+class MP3ADUTranscoder: public FramedFilter {
+public:
+  static MP3ADUTranscoder* createNew(UsageEnvironment& env,
+				  unsigned outBitrate /* in kbps */,
+				  FramedSource* inputSource);
+
+  unsigned outBitrate() const { return fOutBitrate; }
+protected:
+  MP3ADUTranscoder(UsageEnvironment& env,
+		unsigned outBitrate /* in kbps */,
+		FramedSource* inputSource);
+      // called only by createNew()
+  virtual ~MP3ADUTranscoder();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void getAttributes() const;
+
+private:
+  static void afterGettingFrame(void* clientData,
+				unsigned numBytesRead, unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned numBytesRead, unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+
+private:
+  unsigned fOutBitrate; // in kbps
+  unsigned fAvailableBytesForBackpointer;
+
+  unsigned char* fOrigADU;
+      // used to store incoming ADU prior to transcoding
+};
+
+#endif
diff --git a/liveMedia/include/MP3ADUinterleaving.hh b/liveMedia/include/MP3ADUinterleaving.hh
new file mode 100644
index 0000000..6ab1f4b
--- /dev/null
+++ b/liveMedia/include/MP3ADUinterleaving.hh
@@ -0,0 +1,129 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Interleaving of MP3 ADUs
+// C++ header
+
+#ifndef _MP3_ADU_INTERLEAVING_HH
+#define _MP3_ADU_INTERLEAVING_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+// A data structure used to represent an interleaving
+#define MAX_CYCLE_SIZE 256
+class Interleaving {
+public:
+  Interleaving(unsigned cycleSize, unsigned char const* cycleArray);
+  virtual ~Interleaving();
+
+  unsigned cycleSize() const {return fCycleSize;}
+  unsigned char lookupInverseCycle(unsigned char index) const {
+    return fInverseCycle[index];
+  }
+
+private:
+  unsigned fCycleSize;
+  unsigned char fInverseCycle[MAX_CYCLE_SIZE];
+};
+
+// This class is used only as a base for the following two:
+
+class MP3ADUinterleaverBase: public FramedFilter {
+protected:
+  MP3ADUinterleaverBase(UsageEnvironment& env,
+			FramedSource* inputSource);
+      // abstract base class
+  virtual ~MP3ADUinterleaverBase();
+
+  static FramedSource* getInputSource(UsageEnvironment& env,
+				      char const* inputSourceName);
+  static void afterGettingFrame(void* clientData,
+				unsigned numBytesRead,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  virtual void afterGettingFrame(unsigned numBytesRead,
+				 struct timeval presentationTime,
+				 unsigned durationInMicroseconds) = 0;
+};
+
+// This class is used to convert an ADU sequence from non-interleaved
+// to interleaved form:
+
+class MP3ADUinterleaver: public MP3ADUinterleaverBase {
+public:
+  static MP3ADUinterleaver* createNew(UsageEnvironment& env,
+				      Interleaving const& interleaving,
+				      FramedSource* inputSource);
+
+protected:
+  MP3ADUinterleaver(UsageEnvironment& env,
+		    Interleaving const& interleaving,
+		    FramedSource* inputSource);
+      // called only by createNew()
+  virtual ~MP3ADUinterleaver();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void afterGettingFrame(unsigned numBytesRead,
+				 struct timeval presentationTime,
+				 unsigned durationInMicroseconds);
+
+private:
+  void releaseOutgoingFrame();
+
+private:
+  Interleaving const fInterleaving;
+  class InterleavingFrames* fFrames;
+  unsigned char fPositionOfNextIncomingFrame;
+  unsigned fII, fICC;
+};
+
+// This class is used to convert an ADU sequence from interleaved
+// to non-interleaved form:
+
+class MP3ADUdeinterleaver: public MP3ADUinterleaverBase {
+public:
+  static MP3ADUdeinterleaver* createNew(UsageEnvironment& env,
+					FramedSource* inputSource);
+
+protected:
+  MP3ADUdeinterleaver(UsageEnvironment& env,
+		      FramedSource* inputSource);
+      // called only by createNew()
+  virtual ~MP3ADUdeinterleaver();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void afterGettingFrame(unsigned numBytesRead,
+				 struct timeval presentationTime,
+				 unsigned durationInMicroseconds);
+
+private:
+  void releaseOutgoingFrame();
+
+private:
+  class DeinterleavingFrames* fFrames;
+  unsigned fIIlastSeen, fICClastSeen;
+};
+
+#endif
+
diff --git a/liveMedia/include/MP3AudioFileServerMediaSubsession.hh b/liveMedia/include/MP3AudioFileServerMediaSubsession.hh
new file mode 100644
index 0000000..384428f
--- /dev/null
+++ b/liveMedia/include/MP3AudioFileServerMediaSubsession.hh
@@ -0,0 +1,73 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an MP3 audio file.
+// (Actually, any MPEG-1 or MPEG-2 audio file should work.)
+// C++ header
+
+#ifndef _MP3_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _MP3_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+#ifndef _MP3_ADU_INTERLEAVING_HH
+#include "MP3ADUinterleaving.hh"
+#endif
+#ifndef _MP3_ADU_HH
+#include "MP3ADU.hh"
+#endif
+
+class MP3AudioFileServerMediaSubsession: public FileServerMediaSubsession{
+public:
+  static MP3AudioFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource,
+	    Boolean generateADUs, Interleaving* interleaving);
+      // Note: "interleaving" is used only if "generateADUs" is True,
+      // (and a value of NULL means 'no interleaving')
+
+protected:
+  MP3AudioFileServerMediaSubsession(UsageEnvironment& env,
+				    char const* fileName, Boolean reuseFirstSource,
+				    Boolean generateADUs,
+				    Interleaving* interleaving);
+      // called only by createNew();
+  virtual ~MP3AudioFileServerMediaSubsession();
+
+  FramedSource* createNewStreamSourceCommon(FramedSource* baseMP3Source, unsigned mp3NumBytes, unsigned& estBitrate);
+  void getBaseStreams(FramedSource* frontStream,
+		      FramedSource*& sourceMP3Stream, ADUFromMP3Source*& aduStream/*if any*/);
+
+protected: // redefined virtual functions
+  virtual void seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes);
+  virtual void setStreamSourceScale(FramedSource* inputSource, float scale);
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+  virtual void testScaleFactor(float& scale);
+  virtual float duration() const;
+
+protected:
+  Boolean fGenerateADUs;
+  Interleaving* fInterleaving;
+  float fFileDuration;
+};
+
+#endif
diff --git a/liveMedia/include/MP3FileSource.hh b/liveMedia/include/MP3FileSource.hh
new file mode 100644
index 0000000..991d6c1
--- /dev/null
+++ b/liveMedia/include/MP3FileSource.hh
@@ -0,0 +1,69 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP3 File Sources
+// C++ header
+
+#ifndef _MP3_FILE_SOURCE_HH
+#define _MP3_FILE_SOURCE_HH
+
+#ifndef _FRAMED_FILE_SOURCE_HH
+#include "FramedFileSource.hh"
+#endif
+
+class MP3StreamState; // forward
+
+class MP3FileSource: public FramedFileSource {
+public:
+  static MP3FileSource* createNew(UsageEnvironment& env, char const* fileName);
+
+  float filePlayTime() const;
+  unsigned fileSize() const;
+  void setPresentationTimeScale(unsigned scale);
+  void seekWithinFile(double seekNPT, double streamDuration);
+      // if "streamDuration" is >0.0, then we limit the stream to that duration, before treating it as EOF
+
+protected:
+  MP3FileSource(UsageEnvironment& env, FILE* fid);
+	// called only by createNew()
+
+  virtual ~MP3FileSource();
+
+protected:
+  void assignStream(FILE* fid, unsigned filesize);
+  Boolean initializeStream();
+
+  MP3StreamState* streamState() {return fStreamState;}
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual char const* MIMEtype() const;
+  virtual void getAttributes() const;
+
+private:
+  virtual Boolean doGetNextFrame1();
+
+private:
+  MP3StreamState* fStreamState;
+  Boolean fHaveJustInitialized;
+  struct timeval fFirstFramePresentationTime; // set on stream init
+  Boolean fLimitNumBytesToStream;
+  unsigned fNumBytesToStream; // used iff "fLimitNumBytesToStream" is True
+};
+
+#endif
diff --git a/liveMedia/include/MP3Transcoder.hh b/liveMedia/include/MP3Transcoder.hh
new file mode 100644
index 0000000..223f4f3
--- /dev/null
+++ b/liveMedia/include/MP3Transcoder.hh
@@ -0,0 +1,44 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP3 Transcoder
+// C++ header
+
+#ifndef _MP3_TRANSCODER_HH
+#define _MP3_TRANSCODER_HH
+
+#ifndef _MP3_ADU_HH
+#include "MP3ADU.hh"
+#endif
+#ifndef _MP3_ADU_TRANSCODER_HH
+#include "MP3ADUTranscoder.hh"
+#endif
+
+class MP3Transcoder: public MP3FromADUSource {
+public:
+  static MP3Transcoder* createNew(UsageEnvironment& env,
+				  unsigned outBitrate /* in kbps */,
+				  FramedSource* inputSource);
+
+protected:
+  MP3Transcoder(UsageEnvironment& env,
+		MP3ADUTranscoder* aduTranscoder);
+      // called only by createNew()
+  virtual ~MP3Transcoder();
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2AudioRTPSink.hh b/liveMedia/include/MPEG1or2AudioRTPSink.hh
new file mode 100644
index 0000000..231a8fe
--- /dev/null
+++ b/liveMedia/include/MPEG1or2AudioRTPSink.hh
@@ -0,0 +1,48 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for MPEG audio (RFC 2250)
+// C++ header
+
+#ifndef _MPEG_1OR2_AUDIO_RTP_SINK_HH
+#define _MPEG_1OR2_AUDIO_RTP_SINK_HH
+
+#ifndef _AUDIO_RTP_SINK_HH
+#include "AudioRTPSink.hh"
+#endif
+
+class MPEG1or2AudioRTPSink: public AudioRTPSink {
+public:
+  static MPEG1or2AudioRTPSink* createNew(UsageEnvironment& env,
+				     Groupsock* RTPgs);
+
+protected:
+  MPEG1or2AudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs);
+	// called only by createNew()
+
+  virtual ~MPEG1or2AudioRTPSink();
+
+private: // redefined virtual functions:
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual unsigned specialHeaderSize() const;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2AudioRTPSource.hh b/liveMedia/include/MPEG1or2AudioRTPSource.hh
new file mode 100644
index 0000000..3e863ce
--- /dev/null
+++ b/liveMedia/include/MPEG1or2AudioRTPSource.hh
@@ -0,0 +1,51 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MPEG-1 or MPEG-2 Audio RTP Sources
+// C++ header
+
+#ifndef _MPEG_1OR2_AUDIO_RTP_SOURCE_HH
+#define _MPEG_1OR2_AUDIO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class MPEG1or2AudioRTPSource: public MultiFramedRTPSource {
+public:
+  static MPEG1or2AudioRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat = 14,
+	    unsigned rtpTimestampFrequency = 90000);
+
+protected:
+  virtual ~MPEG1or2AudioRTPSource();
+
+private:
+  MPEG1or2AudioRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2AudioStreamFramer.hh b/liveMedia/include/MPEG1or2AudioStreamFramer.hh
new file mode 100644
index 0000000..8cb23a2
--- /dev/null
+++ b/liveMedia/include/MPEG1or2AudioStreamFramer.hh
@@ -0,0 +1,70 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an MPEG (1,2) audio elementary stream into frames
+// C++ header
+
+#ifndef _MPEG_1OR2_AUDIO_STREAM_FRAMER_HH
+#define _MPEG_1OR2_AUDIO_STREAM_FRAMER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+class MPEG1or2AudioStreamFramer: public FramedFilter {
+public:
+  static MPEG1or2AudioStreamFramer*
+  createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    Boolean syncWithInputSource = False);
+  // If "syncWithInputSource" is True, the stream's presentation time
+  // will be reset to that of the input source, whenever new data
+  // is read from it.
+
+  void flushInput(); // called if there is a discontinuity (seeking) in the input
+
+private:
+  MPEG1or2AudioStreamFramer(UsageEnvironment& env, FramedSource* inputSource,
+			    Boolean syncWithInputSource);
+      // called only by createNew()
+  virtual ~MPEG1or2AudioStreamFramer();
+
+  static void continueReadProcessing(void* clientData,
+				     unsigned char* ptr, unsigned size,
+				     struct timeval presentationTime);
+  void continueReadProcessing();
+
+  void resetPresentationTime(struct timeval newPresentationTime);
+      // useful if we're being synced with a separate (e.g., video) stream
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  void reset();
+  struct timeval currentFramePlayTime() const;
+
+private:
+  Boolean fSyncWithInputSource;
+  struct timeval fNextFramePresentationTime;
+
+private: // parsing state
+  class MPEG1or2AudioStreamParser* fParser;
+  friend class MPEG1or2AudioStreamParser; // hack
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2Demux.hh b/liveMedia/include/MPEG1or2Demux.hh
new file mode 100644
index 0000000..deb3643
--- /dev/null
+++ b/liveMedia/include/MPEG1or2Demux.hh
@@ -0,0 +1,150 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Demultiplexer for a MPEG 1 or 2 Program Stream
+// C++ header
+
+#ifndef _MPEG_1OR2_DEMUX_HH
+#define _MPEG_1OR2_DEMUX_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class MPEG1or2DemuxedElementaryStream; // forward
+
+class MPEG1or2Demux: public Medium {
+public:
+  static MPEG1or2Demux* createNew(UsageEnvironment& env,
+				  FramedSource* inputSource,
+				  Boolean reclaimWhenLastESDies = False);
+  // If "reclaimWhenLastESDies" is True, the the demux is deleted when
+  // all "MPEG1or2DemuxedElementaryStream"s that we created get deleted.
+
+  MPEG1or2DemuxedElementaryStream* newElementaryStream(u_int8_t streamIdTag);
+
+  // Specialized versions of the above for audio and video:
+  MPEG1or2DemuxedElementaryStream* newAudioStream();
+  MPEG1or2DemuxedElementaryStream* newVideoStream();
+
+  // A hack for getting raw, undemuxed PES packets from the Program Stream:
+  MPEG1or2DemuxedElementaryStream* newRawPESStream();
+
+  void getNextFrame(u_int8_t streamIdTag,
+		    unsigned char* to, unsigned maxSize,
+		    FramedSource::afterGettingFunc* afterGettingFunc,
+		    void* afterGettingClientData,
+		    FramedSource::onCloseFunc* onCloseFunc,
+		    void* onCloseClientData);
+      // similar to FramedSource::getNextFrame(), except that it also
+      // takes a stream id tag as parameter.
+
+  void stopGettingFrames(u_int8_t streamIdTag);
+      // similar to FramedSource::stopGettingFrames(), except that it also
+      // takes a stream id tag as parameter.
+
+  static void handleClosure(void* clientData);
+      // This should be called (on ourself) if the source is discovered
+      // to be closed (i.e., no longer readable)
+
+  FramedSource* inputSource() const { return fInputSource; }
+
+  class SCR {
+  public:
+    SCR();
+
+    u_int8_t highBit;
+    u_int32_t remainingBits;
+    u_int16_t extension;
+
+    Boolean isValid;
+  };
+  SCR& lastSeenSCR() { return fLastSeenSCR; }
+
+  unsigned char mpegVersion() const { return fMPEGversion; }
+
+  void flushInput(); // should be called before any 'seek' on the underlying source
+
+private:
+  MPEG1or2Demux(UsageEnvironment& env,
+		FramedSource* inputSource, Boolean reclaimWhenLastESDies);
+      // called only by createNew()
+  virtual ~MPEG1or2Demux();
+
+  void registerReadInterest(u_int8_t streamIdTag,
+			    unsigned char* to, unsigned maxSize,
+			    FramedSource::afterGettingFunc* afterGettingFunc,
+			    void* afterGettingClientData,
+			    FramedSource::onCloseFunc* onCloseFunc,
+			    void* onCloseClientData);
+
+  Boolean useSavedData(u_int8_t streamIdTag,
+		       unsigned char* to, unsigned maxSize,
+		       FramedSource::afterGettingFunc* afterGettingFunc,
+		       void* afterGettingClientData);
+
+  static void continueReadProcessing(void* clientData,
+				     unsigned char* ptr, unsigned size,
+				     struct timeval presentationTime);
+  void continueReadProcessing();
+
+private:
+  friend class MPEG1or2DemuxedElementaryStream;
+  void noteElementaryStreamDeletion(MPEG1or2DemuxedElementaryStream* es);
+
+private:
+  FramedSource* fInputSource;
+  SCR fLastSeenSCR;
+  unsigned char fMPEGversion;
+
+  unsigned char fNextAudioStreamNumber;
+  unsigned char fNextVideoStreamNumber;
+  Boolean fReclaimWhenLastESDies;
+  unsigned fNumOutstandingESs;
+
+  // A descriptor for each possible stream id tag:
+  typedef struct OutputDescriptor {
+    // input parameters
+    unsigned char* to; unsigned maxSize;
+    FramedSource::afterGettingFunc* fAfterGettingFunc;
+    void* afterGettingClientData;
+    FramedSource::onCloseFunc* fOnCloseFunc;
+    void* onCloseClientData;
+
+    // output parameters
+    unsigned frameSize; struct timeval presentationTime;
+    class SavedData; // forward
+    SavedData* savedDataHead;
+    SavedData* savedDataTail;
+    unsigned savedDataTotalSize;
+
+    // status parameters
+    Boolean isPotentiallyReadable;
+    Boolean isCurrentlyActive;
+    Boolean isCurrentlyAwaitingData;
+  } OutputDescriptor_t;
+  OutputDescriptor_t fOutput[256];
+
+  unsigned fNumPendingReads;
+  Boolean fHaveUndeliveredData;
+
+private: // parsing state
+  class MPEGProgramStreamParser* fParser;
+  friend class MPEGProgramStreamParser; // hack
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2DemuxedElementaryStream.hh b/liveMedia/include/MPEG1or2DemuxedElementaryStream.hh
new file mode 100644
index 0000000..9458049
--- /dev/null
+++ b/liveMedia/include/MPEG1or2DemuxedElementaryStream.hh
@@ -0,0 +1,69 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A MPEG 1 or 2 Elementary Stream, demultiplexed from a Program Stream
+// C++ header
+
+#ifndef _MPEG_1OR2_DEMUXED_ELEMENTARY_STREAM_HH
+#define _MPEG_1OR2_DEMUXED_ELEMENTARY_STREAM_HH
+
+#ifndef _MPEG_1OR2_DEMUX_HH
+#include "MPEG1or2Demux.hh"
+#endif
+
+class MPEG1or2DemuxedElementaryStream: public FramedSource {
+public:
+  MPEG1or2Demux::SCR lastSeenSCR() const { return fLastSeenSCR; }
+
+  unsigned char mpegVersion() const { return fMPEGversion; }
+
+  MPEG1or2Demux& sourceDemux() const { return fOurSourceDemux; }
+
+private: // We are created only by a MPEG1or2Demux (a friend)
+  MPEG1or2DemuxedElementaryStream(UsageEnvironment& env,
+			      u_int8_t streamIdTag,
+			      MPEG1or2Demux& sourceDemux);
+  virtual ~MPEG1or2DemuxedElementaryStream();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+  virtual char const* MIMEtype() const;
+  virtual unsigned maxFrameSize() const;
+
+private:
+  static void afterGettingFrame(void* clientData,
+				unsigned frameSize, unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+
+  void afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+
+private:
+  u_int8_t fOurStreamIdTag;
+  MPEG1or2Demux& fOurSourceDemux;
+  char const* fMIMEtype;
+  MPEG1or2Demux::SCR fLastSeenSCR;
+  unsigned char fMPEGversion;
+
+  friend class MPEG1or2Demux;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2DemuxedServerMediaSubsession.hh b/liveMedia/include/MPEG1or2DemuxedServerMediaSubsession.hh
new file mode 100644
index 0000000..0ac18a1
--- /dev/null
+++ b/liveMedia/include/MPEG1or2DemuxedServerMediaSubsession.hh
@@ -0,0 +1,63 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a MPEG-1 or 2 demuxer.
+// C++ header
+
+#ifndef _MPEG_1OR2_DEMUXED_SERVER_MEDIA_SUBSESSION_HH
+#define _MPEG_1OR2_DEMUXED_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _ON_DEMAND_SERVER_MEDIA_SUBSESSION_HH
+#include "OnDemandServerMediaSubsession.hh"
+#endif
+#ifndef _MPEG_1OR2_FILE_SERVER_DEMUX_HH
+#include "MPEG1or2FileServerDemux.hh"
+#endif
+
+class MPEG1or2DemuxedServerMediaSubsession: public OnDemandServerMediaSubsession{
+public:
+  static MPEG1or2DemuxedServerMediaSubsession*
+  createNew(MPEG1or2FileServerDemux& demux, u_int8_t streamIdTag,
+	    Boolean reuseFirstSource,
+	    Boolean iFramesOnly = False, double vshPeriod = 5.0);
+  // The last two parameters are relevant for video streams only
+
+private:
+  MPEG1or2DemuxedServerMediaSubsession(MPEG1or2FileServerDemux& demux,
+				       u_int8_t streamIdTag, Boolean reuseFirstSource,
+				       Boolean iFramesOnly, double vshPeriod);
+      // called only by createNew();
+  virtual ~MPEG1or2DemuxedServerMediaSubsession();
+
+private: // redefined virtual functions
+  virtual void seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes);
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+  virtual float duration() const;
+
+private:
+  MPEG1or2FileServerDemux& fOurDemux;
+  u_int8_t fStreamIdTag;
+  Boolean fIFramesOnly; // for video streams
+  double fVSHPeriod; // for video streams
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2FileServerDemux.hh b/liveMedia/include/MPEG1or2FileServerDemux.hh
new file mode 100644
index 0000000..9728abe
--- /dev/null
+++ b/liveMedia/include/MPEG1or2FileServerDemux.hh
@@ -0,0 +1,67 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A server demultiplexer for a MPEG 1 or 2 Program Stream
+// C++ header
+
+#ifndef _MPEG_1OR2_FILE_SERVER_DEMUX_HH
+#define _MPEG_1OR2_FILE_SERVER_DEMUX_HH
+
+#ifndef _SERVER_MEDIA_SESSION_HH
+#include "ServerMediaSession.hh"
+#endif
+#ifndef _MPEG_1OR2_DEMUXED_ELEMENTARY_STREAM_HH
+#include "MPEG1or2DemuxedElementaryStream.hh"
+#endif
+
+class MPEG1or2FileServerDemux: public Medium {
+public:
+  static MPEG1or2FileServerDemux*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource);
+
+  ServerMediaSubsession* newAudioServerMediaSubsession(); // MPEG-1 or 2 audio
+  ServerMediaSubsession* newVideoServerMediaSubsession(Boolean iFramesOnly = False,
+						       double vshPeriod = 5.0
+		       /* how often (in seconds) to inject a Video_Sequence_Header,
+			  if one doesn't already appear in the stream */);
+  ServerMediaSubsession* newAC3AudioServerMediaSubsession(); // AC-3 audio (from VOB)
+
+  unsigned fileSize() const { return fFileSize; }
+  float fileDuration() const { return fFileDuration; }
+
+private:
+  MPEG1or2FileServerDemux(UsageEnvironment& env, char const* fileName,
+			  Boolean reuseFirstSource);
+      // called only by createNew();
+  virtual ~MPEG1or2FileServerDemux();
+
+private:
+  friend class MPEG1or2DemuxedServerMediaSubsession;
+  MPEG1or2DemuxedElementaryStream* newElementaryStream(unsigned clientSessionId,
+						       u_int8_t streamIdTag);
+
+private:
+  char const* fFileName;
+  unsigned fFileSize;
+  float fFileDuration;
+  Boolean fReuseFirstSource;
+  MPEG1or2Demux* fSession0Demux;
+  MPEG1or2Demux* fLastCreatedDemux;
+  unsigned fLastClientSessionId;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2VideoFileServerMediaSubsession.hh b/liveMedia/include/MPEG1or2VideoFileServerMediaSubsession.hh
new file mode 100644
index 0000000..1e178c6
--- /dev/null
+++ b/liveMedia/include/MPEG1or2VideoFileServerMediaSubsession.hh
@@ -0,0 +1,59 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a MPEG-1 or 2 Elementary Stream video file.
+// C++ header
+
+#ifndef _MPEG_1OR2_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _MPEG_1OR2_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+
+class MPEG1or2VideoFileServerMediaSubsession: public FileServerMediaSubsession{
+public:
+  static MPEG1or2VideoFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource,
+	    Boolean iFramesOnly = False,
+	    double vshPeriod = 5.0
+	    /* how often (in seconds) to inject a Video_Sequence_Header,
+	       if one doesn't already appear in the stream */);
+
+private:
+  MPEG1or2VideoFileServerMediaSubsession(UsageEnvironment& env,
+					 char const* fileName,
+					 Boolean reuseFirstSource,
+					 Boolean iFramesOnly,
+					 double vshPeriod);
+      // called only by createNew();
+  virtual ~MPEG1or2VideoFileServerMediaSubsession();
+
+private: // redefined virtual functions
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+
+private:
+  Boolean fIFramesOnly;
+  double fVSHPeriod;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2VideoRTPSink.hh b/liveMedia/include/MPEG1or2VideoRTPSink.hh
new file mode 100644
index 0000000..e80f32c
--- /dev/null
+++ b/liveMedia/include/MPEG1or2VideoRTPSink.hh
@@ -0,0 +1,69 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for MPEG video (RFC 2250)
+// C++ header
+
+#ifndef _MPEG_1OR2_VIDEO_RTP_SINK_HH
+#define _MPEG_1OR2_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+
+class MPEG1or2VideoRTPSink: public VideoRTPSink {
+public:
+  static MPEG1or2VideoRTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs);
+
+protected:
+  MPEG1or2VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs);
+	// called only by createNew()
+
+  virtual ~MPEG1or2VideoRTPSink();
+
+private: // redefined virtual functions:
+  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual Boolean allowFragmentationAfterStart() const;
+  virtual
+  Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+					 unsigned numBytesInFrame) const;
+  virtual unsigned specialHeaderSize() const;
+
+private:
+  // MPEG video-specific state, used to decide how to fill out the
+  // video-specific header, and when to include multiple 'frames' in a
+  // single outgoing RTP packet.  Eventually we should somehow get this
+  // state from the source (MPEG1or2VideoStreamFramer) instead, as the source
+  // already has this info itself.
+  struct {
+    unsigned temporal_reference;
+    unsigned char picture_coding_type;
+    unsigned char vector_code_bits; // FBV,BFC,FFV,FFC from RFC 2250, sec. 3.4
+  } fPictureState;
+  Boolean fPreviousFrameWasSlice;
+      // used to implement frameCanAppearAfterPacketStart()
+  Boolean fSequenceHeaderPresent;
+  Boolean fPacketBeginsSlice, fPacketEndsSlice;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2VideoRTPSource.hh b/liveMedia/include/MPEG1or2VideoRTPSource.hh
new file mode 100644
index 0000000..b05800c
--- /dev/null
+++ b/liveMedia/include/MPEG1or2VideoRTPSource.hh
@@ -0,0 +1,53 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MPEG-1 or MPEG-2 Video RTP Sources
+// C++ header
+
+#ifndef _MPEG_1OR2_VIDEO_RTP_SOURCE_HH
+#define _MPEG_1OR2_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class MPEG1or2VideoRTPSource: public MultiFramedRTPSource {
+public:
+  static MPEG1or2VideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat = 32,
+	    unsigned rtpPayloadFrequency = 90000);
+
+protected:
+  virtual ~MPEG1or2VideoRTPSource();
+
+private:
+  MPEG1or2VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		     unsigned char rtpPayloadFormat,
+		     unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual Boolean packetIsUsableInJitterCalculation(unsigned char* packet,
+						    unsigned packetSize);
+  virtual char const* MIMEtype() const;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2VideoStreamDiscreteFramer.hh b/liveMedia/include/MPEG1or2VideoStreamDiscreteFramer.hh
new file mode 100644
index 0000000..abb556c
--- /dev/null
+++ b/liveMedia/include/MPEG1or2VideoStreamDiscreteFramer.hh
@@ -0,0 +1,76 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simplified version of "MPEG1or2VideoStreamFramer" that takes only
+// complete, discrete frames (rather than an arbitrary byte stream) as input.
+// This avoids the parsing and data copying overhead of the full
+// "MPEG1or2VideoStreamFramer".
+// C++ header
+
+#ifndef _MPEG1or2_VIDEO_STREAM_DISCRETE_FRAMER_HH
+#define _MPEG1or2_VIDEO_STREAM_DISCRETE_FRAMER_HH
+
+#ifndef _MPEG1or2_VIDEO_STREAM_FRAMER_HH
+#include "MPEG1or2VideoStreamFramer.hh"
+#endif
+
+#define VSH_MAX_SIZE 1000
+
+class MPEG1or2VideoStreamDiscreteFramer: public MPEG1or2VideoStreamFramer {
+public:
+  static MPEG1or2VideoStreamDiscreteFramer*
+  createNew(UsageEnvironment& env, FramedSource* inputSource,
+            Boolean iFramesOnly = False, // see MPEG1or2VideoStreamFramer.hh
+            double vshPeriod = 5.0, // see MPEG1or2VideoStreamFramer.hh
+	    Boolean leavePresentationTimesUnmodified = False);
+
+protected:
+  MPEG1or2VideoStreamDiscreteFramer(UsageEnvironment& env,
+                                    FramedSource* inputSource,
+                                    Boolean iFramesOnly, double vshPeriod, Boolean leavePresentationTimesUnmodified);
+  // called only by createNew()
+  virtual ~MPEG1or2VideoStreamDiscreteFramer();
+
+protected:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+protected:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+                          unsigned numTruncatedBytes,
+                          struct timeval presentationTime,
+                          unsigned durationInMicroseconds);
+
+protected:
+  Boolean fLeavePresentationTimesUnmodified;
+  struct timeval fLastNonBFramePresentationTime;
+  unsigned fLastNonBFrameTemporal_reference;
+
+  // A saved copy of the most recently seen 'video_sequence_header',
+  // in case we need to insert it into the stream periodically:
+  unsigned char fSavedVSHBuffer[VSH_MAX_SIZE];
+  unsigned fSavedVSHSize;
+  double fSavedVSHTimestamp;
+  Boolean fIFramesOnly;
+  double fVSHPeriod;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG1or2VideoStreamFramer.hh b/liveMedia/include/MPEG1or2VideoStreamFramer.hh
new file mode 100644
index 0000000..81a59ef
--- /dev/null
+++ b/liveMedia/include/MPEG1or2VideoStreamFramer.hh
@@ -0,0 +1,56 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an MPEG 1 or 2 video elementary stream into
+//   frames for: Video_Sequence_Header, GOP_Header, Picture_Header
+// C++ header
+
+#ifndef _MPEG_1OR2_VIDEO_STREAM_FRAMER_HH
+#define _MPEG_1OR2_VIDEO_STREAM_FRAMER_HH
+
+#ifndef _MPEG_VIDEO_STREAM_FRAMER_HH
+#include "MPEGVideoStreamFramer.hh"
+#endif
+
+class MPEG1or2VideoStreamFramer: public MPEGVideoStreamFramer {
+public:
+  static MPEG1or2VideoStreamFramer*
+      createNew(UsageEnvironment& env, FramedSource* inputSource,
+		Boolean iFramesOnly = False,
+		double vshPeriod = 5.0
+		/* how often (in seconds) to inject a Video_Sequence_Header,
+		   if one doesn't already appear in the stream */);
+
+protected:
+  MPEG1or2VideoStreamFramer(UsageEnvironment& env,
+			    FramedSource* inputSource,
+			    Boolean iFramesOnly, double vshPeriod,
+			    Boolean createParser = True);
+      // called only by createNew(), or by subclass constructors
+  virtual ~MPEG1or2VideoStreamFramer();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isMPEG1or2VideoStreamFramer() const;
+
+private:
+  double getCurrentPTS() const;
+
+  friend class MPEG1or2VideoStreamParser; // hack
+};
+
+#endif
diff --git a/liveMedia/include/MPEG2IndexFromTransportStream.hh b/liveMedia/include/MPEG2IndexFromTransportStream.hh
new file mode 100644
index 0000000..75b5a23
--- /dev/null
+++ b/liveMedia/include/MPEG2IndexFromTransportStream.hh
@@ -0,0 +1,95 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that produces a sequence of I-frame indices from a MPEG-2 Transport Stream
+// C++ header
+
+#ifndef _MPEG2_IFRAME_INDEX_FROM_TRANSPORT_STREAM_HH
+#define _MPEG2_IFRAME_INDEX_FROM_TRANSPORT_STREAM_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+#ifndef TRANSPORT_PACKET_SIZE
+#define TRANSPORT_PACKET_SIZE 188
+#endif
+
+#ifndef MAX_PES_PACKET_SIZE
+#define MAX_PES_PACKET_SIZE 65536
+#endif
+
+class IndexRecord; // forward
+
+class MPEG2IFrameIndexFromTransportStream: public FramedFilter {
+public:
+  static MPEG2IFrameIndexFromTransportStream*
+  createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+  MPEG2IFrameIndexFromTransportStream(UsageEnvironment& env,
+				      FramedSource* inputSource);
+      // called only by createNew()
+  virtual ~MPEG2IFrameIndexFromTransportStream();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+			  unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+
+  static void handleInputClosure(void* clientData);
+  void handleInputClosure1();
+
+  void analyzePAT(unsigned char* pkt, unsigned size);
+  void analyzePMT(unsigned char* pkt, unsigned size);
+
+  Boolean deliverIndexRecord();
+  Boolean parseFrame();
+  Boolean parseToNextCode(unsigned char& nextCode);
+  void compactParseBuffer();
+  void addToTail(IndexRecord* newIndexRecord);
+
+private:
+  Boolean fIsH264; // True iff the video is H.264 (encapsulated in a Transport Stream)
+  Boolean fIsH265; // True iff the video is H.265 (encapsulated in a Transport Stream)
+  unsigned long fInputTransportPacketCounter;
+  unsigned fClosureNumber;
+  u_int8_t fLastContinuityCounter;
+  float fFirstPCR, fLastPCR;
+  Boolean fHaveSeenFirstPCR;
+  u_int16_t fPMT_PID, fVideo_PID;
+      // Note: We assume: 1 program per Transport Stream; 1 video stream per program
+  unsigned char fInputBuffer[TRANSPORT_PACKET_SIZE];
+  unsigned char* fParseBuffer;
+  unsigned fParseBufferSize;
+  unsigned fParseBufferFrameStart;
+  unsigned fParseBufferParseEnd;
+  unsigned fParseBufferDataEnd;
+  IndexRecord* fHeadIndexRecord;
+  IndexRecord* fTailIndexRecord;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG2TransportFileServerMediaSubsession.hh b/liveMedia/include/MPEG2TransportFileServerMediaSubsession.hh
new file mode 100644
index 0000000..16b6ece
--- /dev/null
+++ b/liveMedia/include/MPEG2TransportFileServerMediaSubsession.hh
@@ -0,0 +1,131 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a MPEG-2 Transport Stream file.
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _MPEG2_TRANSPORT_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+#ifndef _MPEG2_TRANSPORT_STREAM_FRAMER_HH
+#include "MPEG2TransportStreamFramer.hh"
+#endif
+#ifndef _BYTE_STREAM_FILE_SOURCE_HH
+#include "ByteStreamFileSource.hh"
+#endif
+#ifndef _MPEG2_TRANSPORT_STREAM_TRICK_MODE_FILTER_HH
+#include "MPEG2TransportStreamTrickModeFilter.hh"
+#endif
+#ifndef _MPEG2_TRANSPORT_STREAM_FROM_ES_SOURCE_HH
+#include "MPEG2TransportStreamFromESSource.hh"
+#endif
+
+class ClientTrickPlayState; // forward
+
+class MPEG2TransportFileServerMediaSubsession: public FileServerMediaSubsession {
+public:
+  static MPEG2TransportFileServerMediaSubsession*
+  createNew(UsageEnvironment& env,
+	    char const* dataFileName, char const* indexFileName,
+	    Boolean reuseFirstSource);
+
+protected:
+  MPEG2TransportFileServerMediaSubsession(UsageEnvironment& env,
+					  char const* fileName,
+					  MPEG2TransportStreamIndexFile* indexFile,
+					  Boolean reuseFirstSource);
+      // called only by createNew();
+  virtual ~MPEG2TransportFileServerMediaSubsession();
+
+  virtual ClientTrickPlayState* newClientTrickPlayState();
+
+private: // redefined virtual functions
+  // Note that because - to implement 'trick play' operations - we're operating on
+  // more than just the input source, we reimplement some functions that are
+  // already implemented in "OnDemandServerMediaSubsession", rather than
+  // reimplementing "seekStreamSource()" and "setStreamSourceScale()":
+  virtual void startStream(unsigned clientSessionId, void* streamToken,
+                           TaskFunc* rtcpRRHandler,
+                           void* rtcpRRHandlerClientData,
+                           unsigned short& rtpSeqNum,
+                           unsigned& rtpTimestamp,
+			   ServerRequestAlternativeByteHandler* serverRequestAlternativeByteHandler,
+                           void* serverRequestAlternativeByteHandlerClientData);
+  virtual void pauseStream(unsigned clientSessionId, void* streamToken);
+  virtual void seekStream(unsigned clientSessionId, void* streamToken, double& seekNPT, double streamDuration, u_int64_t& numBytes);
+  virtual void setStreamScale(unsigned clientSessionId, void* streamToken, float scale);
+  virtual void deleteStream(unsigned clientSessionId, void*& streamToken);
+
+  // The virtual functions that are usually implemented by "ServerMediaSubsession"s:
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+
+  virtual void testScaleFactor(float& scale);
+  virtual float duration() const;
+
+private:
+  ClientTrickPlayState* lookupClient(unsigned clientSessionId);
+
+private:
+  MPEG2TransportStreamIndexFile* fIndexFile;
+  float fDuration;
+  HashTable* fClientSessionHashTable; // indexed by client session id
+};
+
+
+// This class encapsulates the 'trick play' state for each current client (for
+// a given "MPEG2TransportFileServerMediaSubsession" - i.e., Transport Stream file).
+// It is used only within the implementation of "MPEG2TransportFileServerMediaSubsession", but is included here,
+// in case subclasses of "MPEG2TransportFileServerMediaSubsession" want to use it.
+
+class ClientTrickPlayState {
+public:
+  ClientTrickPlayState(MPEG2TransportStreamIndexFile* indexFile);
+
+  // Functions to bring "fNPT", "fTSRecordNum" and "fIxRecordNum" in sync:
+  unsigned long updateStateFromNPT(double npt, double seekDuration);
+  void updateStateOnScaleChange();
+  void updateStateOnPlayChange(Boolean reverseToPreviousVSH);
+
+  void handleStreamDeletion();
+  void setSource(MPEG2TransportStreamFramer* framer);
+
+  void setNextScale(float nextScale) { fNextScale = nextScale; }
+  Boolean areChangingScale() const { return fNextScale != fScale; }
+
+protected:
+  void updateTSRecordNum();
+  void reseekOriginalTransportStreamSource();
+
+protected:
+  MPEG2TransportStreamIndexFile* fIndexFile;
+  ByteStreamFileSource* fOriginalTransportStreamSource;
+  MPEG2TransportStreamTrickModeFilter* fTrickModeFilter;
+  MPEG2TransportStreamFromESSource* fTrickPlaySource;
+  MPEG2TransportStreamFramer* fFramer;
+  float fScale, fNextScale, fNPT;
+  unsigned long fTSRecordNum, fIxRecordNum;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG2TransportStreamAccumulator.hh b/liveMedia/include/MPEG2TransportStreamAccumulator.hh
new file mode 100644
index 0000000..b76e0ef
--- /dev/null
+++ b/liveMedia/include/MPEG2TransportStreamAccumulator.hh
@@ -0,0 +1,85 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Collects a stream of incoming MPEG Transport Stream packets into
+//  a chunk sufficiently large to send in a single outgoing (RTP or UDP) packet.
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_ACCUMULATOR_HH
+#define _MPEG_TRANSPORT_STREAM_ACCUMULATOR_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+class MPEG2TransportStreamAccumulator: public FramedFilter {
+public:
+  static MPEG2TransportStreamAccumulator* createNew(UsageEnvironment& env,
+						    FramedSource* inputSource,
+						    unsigned maxPacketSize = 1456);
+
+protected:
+  MPEG2TransportStreamAccumulator(UsageEnvironment& env,
+				  FramedSource* inputSource, unsigned maxPacketSize);
+      // called only by createNew()
+  virtual ~MPEG2TransportStreamAccumulator();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+                          unsigned numTruncatedBytes,
+                          struct timeval presentationTime,
+                          unsigned durationInMicroseconds);
+
+private:
+  unsigned const fDesiredPacketSize;
+  unsigned fNumBytesGathered;
+};
+
+#endif
+
+#ifndef _MP3_TRANSCODER_HH
+#define _MP3_TRANSCODER_HH
+
+#ifndef _MP3_ADU_HH
+#include "MP3ADU.hh"
+#endif
+#ifndef _MP3_ADU_TRANSCODER_HH
+#include "MP3ADUTranscoder.hh"
+#endif
+
+class MP3Transcoder: public MP3FromADUSource {
+public:
+  static MP3Transcoder* createNew(UsageEnvironment& env,
+				  unsigned outBitrate /* in kbps */,
+				  FramedSource* inputSource);
+
+protected:
+  MP3Transcoder(UsageEnvironment& env,
+		MP3ADUTranscoder* aduTranscoder);
+      // called only by createNew()
+  virtual ~MP3Transcoder();
+};
+
+#endif
diff --git a/liveMedia/include/MPEG2TransportStreamDemux.hh b/liveMedia/include/MPEG2TransportStreamDemux.hh
new file mode 100644
index 0000000..8d83d5d
--- /dev/null
+++ b/liveMedia/include/MPEG2TransportStreamDemux.hh
@@ -0,0 +1,50 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Demultiplexer for a MPEG Transport Stream
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_DEMUX_HH
+#define _MPEG2_TRANSPORT_STREAM_DEMUX_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class MPEG2TransportStreamDemux: public Medium {
+public:
+  static MPEG2TransportStreamDemux* createNew(UsageEnvironment& env,
+					      FramedSource* inputSource,
+					      FramedSource::onCloseFunc* onCloseFunc,
+					      void* onCloseClientData);
+
+private:
+  MPEG2TransportStreamDemux(UsageEnvironment& env, FramedSource* inputSource,
+			    FramedSource::onCloseFunc* onCloseFunc, void* onCloseClientData);
+      // called only by createNew()
+  virtual ~MPEG2TransportStreamDemux();
+
+  static void handleEndOfFile(void* clientData);
+  void handleEndOfFile();
+
+private:
+  class MPEG2TransportStreamParser* fParser;
+  FramedSource::onCloseFunc* fOnCloseFunc;
+  void* fOnCloseClientData;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG2TransportStreamFramer.hh b/liveMedia/include/MPEG2TransportStreamFramer.hh
new file mode 100644
index 0000000..8114022
--- /dev/null
+++ b/liveMedia/include/MPEG2TransportStreamFramer.hh
@@ -0,0 +1,78 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that passes through (unchanged) chunks that contain an integral number
+// of MPEG-2 Transport Stream packets, but returning (in "fDurationInMicroseconds")
+// an updated estimate of the time gap between chunks.
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_FRAMER_HH
+#define _MPEG2_TRANSPORT_STREAM_FRAMER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+#ifndef _HASH_TABLE_HH
+#include "HashTable.hh"
+#endif
+
+class MPEG2TransportStreamFramer: public FramedFilter {
+public:
+  static MPEG2TransportStreamFramer*
+  createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+  u_int64_t tsPacketCount() const { return fTSPacketCount; }
+
+  void changeInputSource(FramedSource* newInputSource) { fInputSource = newInputSource; }
+
+  void clearPIDStatusTable();
+  void setNumTSPacketsToStream(unsigned long numTSRecordsToStream);
+  void setPCRLimit(float pcrLimit);
+
+protected:
+  MPEG2TransportStreamFramer(UsageEnvironment& env, FramedSource* inputSource);
+      // called only by createNew()
+  virtual ~MPEG2TransportStreamFramer();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+			  struct timeval presentationTime);
+
+  Boolean updateTSPacketDurationEstimate(unsigned char* pkt, double timeNow);
+
+private:
+  u_int64_t fTSPacketCount;
+  double fTSPacketDurationEstimate;
+  HashTable* fPIDStatusTable;
+  u_int64_t fTSPCRCount;
+  Boolean fLimitNumTSPacketsToStream;
+  unsigned long fNumTSPacketsToStream; // used iff "fLimitNumTSPacketsToStream" is True
+  Boolean fLimitTSPacketsToStreamByPCR;
+  float fPCRLimit; // used iff "fLimitTSPacketsToStreamByPCR" is True
+};
+
+#endif
diff --git a/liveMedia/include/MPEG2TransportStreamFromESSource.hh b/liveMedia/include/MPEG2TransportStreamFromESSource.hh
new file mode 100644
index 0000000..5b1fc59
--- /dev/null
+++ b/liveMedia/include/MPEG2TransportStreamFromESSource.hh
@@ -0,0 +1,66 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter for converting one or more MPEG Elementary Streams
+// to a MPEG-2 Transport Stream
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_FROM_ES_SOURCE_HH
+#define _MPEG2_TRANSPORT_STREAM_FROM_ES_SOURCE_HH
+
+#ifndef _MPEG2_TRANSPORT_STREAM_MULTIPLEXOR_HH
+#include "MPEG2TransportStreamMultiplexor.hh"
+#endif
+
+class MPEG2TransportStreamFromESSource: public MPEG2TransportStreamMultiplexor {
+public:
+  static MPEG2TransportStreamFromESSource* createNew(UsageEnvironment& env);
+
+  void addNewVideoSource(FramedSource* inputSource, int mpegVersion, int16_t PID = -1);
+      // Note: For MPEG-4 video, set "mpegVersion" to 4; for H.264 video, set "mpegVersion" to 5;
+      //     for H.265 video, set "mpegVersion" to 6
+  void addNewAudioSource(FramedSource* inputSource, int mpegVersion, int16_t PID = -1);
+      // Note: For Opus audio, set "mpegVersion" to 3
+  
+      // Note: In these functions, if "PID" is not -1, then it (currently, just the low 8 bits)
+      // is used as the stream's PID.  Otherwise (if "PID" is -1) the 'stream_id' is used as
+      // the PID.
+
+  static unsigned maxInputESFrameSize;
+
+protected:
+  MPEG2TransportStreamFromESSource(UsageEnvironment& env);
+      // called only by createNew()
+  virtual ~MPEG2TransportStreamFromESSource();
+
+  void addNewInputSource(FramedSource* inputSource,
+			 u_int8_t streamId, int mpegVersion, int16_t PID = -1);
+  // used to implement addNew*Source() above
+
+private:
+  // Redefined virtual functions:
+  virtual void doStopGettingFrames();
+  virtual void awaitNewBuffer(unsigned char* oldBuffer);
+
+private:
+  friend class InputESSourceRecord;
+  class InputESSourceRecord* fInputSources;
+  unsigned fVideoSourceCounter, fAudioSourceCounter;
+  Boolean fAwaitingBackgroundDelivery;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG2TransportStreamFromPESSource.hh b/liveMedia/include/MPEG2TransportStreamFromPESSource.hh
new file mode 100644
index 0000000..e4be2d7
--- /dev/null
+++ b/liveMedia/include/MPEG2TransportStreamFromPESSource.hh
@@ -0,0 +1,62 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter for converting a stream of MPEG PES packets to a MPEG-2 Transport Stream
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_FROM_PES_SOURCE_HH
+#define _MPEG2_TRANSPORT_STREAM_FROM_PES_SOURCE_HH
+
+#ifndef _MPEG2_TRANSPORT_STREAM_MULTIPLEXOR_HH
+#include "MPEG2TransportStreamMultiplexor.hh"
+#endif
+#ifndef _MPEG_1OR2_DEMUXED_ELEMENTARY_STREAM_HH
+#include "MPEG1or2DemuxedElementaryStream.hh"
+#endif
+
+class MPEG2TransportStreamFromPESSource: public MPEG2TransportStreamMultiplexor {
+public:
+  static MPEG2TransportStreamFromPESSource*
+  createNew(UsageEnvironment& env, MPEG1or2DemuxedElementaryStream* inputSource);
+
+protected:
+  MPEG2TransportStreamFromPESSource(UsageEnvironment& env,
+				    MPEG1or2DemuxedElementaryStream* inputSource);
+      // called only by createNew()
+  virtual ~MPEG2TransportStreamFromPESSource();
+
+private:
+  // Redefined virtual functions:
+  virtual void doStopGettingFrames();
+  virtual void awaitNewBuffer(unsigned char* oldBuffer);
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+			  unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+
+private:
+  MPEG1or2DemuxedElementaryStream* fInputSource;
+  unsigned char* fInputBuffer;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG2TransportStreamIndexFile.hh b/liveMedia/include/MPEG2TransportStreamIndexFile.hh
new file mode 100644
index 0000000..03badfc
--- /dev/null
+++ b/liveMedia/include/MPEG2TransportStreamIndexFile.hh
@@ -0,0 +1,96 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class that encapsulates MPEG-2 Transport Stream 'index files'/
+// These index files are used to implement 'trick play' operations
+// (seek-by-time, fast forward, reverse play) on Transport Stream files.
+//
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_INDEX_FILE_HH
+#define _MPEG2_TRANSPORT_STREAM_INDEX_FILE_HH
+
+#ifndef _MEDIA_HH
+#include "Media.hh"
+#endif
+
+#define INDEX_RECORD_SIZE 11
+
+class MPEG2TransportStreamIndexFile: public Medium {
+public:
+  static MPEG2TransportStreamIndexFile* createNew(UsageEnvironment& env,
+						  char const* indexFileName);
+
+  virtual ~MPEG2TransportStreamIndexFile();
+
+  // Functions that map between a playing time and a Transport packet number
+  // in the original Transport Stream file:
+
+  void lookupTSPacketNumFromNPT(float& npt, unsigned long& tsPacketNumber,
+			    unsigned long& indexRecordNumber);
+    // Looks up the Transport Stream Packet number corresponding to "npt".
+	// (This may modify "npt" to a more exact value.)
+        // (We also return the index record number that we looked up.)
+
+  void lookupPCRFromTSPacketNum(unsigned long& tsPacketNumber, Boolean reverseToPreviousCleanPoint,
+				float& pcr, unsigned long& indexRecordNumber);
+    // Looks up the PCR timestamp for the transport packet "tsPacketNumber".
+	// (Adjust "tsPacketNumber" only if "reverseToPreviousCleanPoint" is True.)
+        // (We also return the index record number that we looked up.)
+
+  // Miscellaneous functions used to implement 'trick play':
+  Boolean readIndexRecordValues(unsigned long indexRecordNum,
+				unsigned long& transportPacketNum, u_int8_t& offset,
+				u_int8_t& size, float& pcr, u_int8_t& recordType);
+  float getPlayingDuration();
+  void stopReading() { closeFid(); }
+
+  int mpegVersion();
+      // returns the best guess for the version of MPEG being used for data within the underlying Transport Stream file.
+      // (1,2,4, or 5 (representing H.264).  0 means 'don't know' (usually because the index file is empty))
+
+private:
+  MPEG2TransportStreamIndexFile(UsageEnvironment& env, char const* indexFileName);
+
+  Boolean openFid();
+  Boolean seekToIndexRecord(unsigned long indexRecordNumber);
+  Boolean readIndexRecord(unsigned long indexRecordNum); // into "fBuf"
+  Boolean readOneIndexRecord(unsigned long indexRecordNum); // closes "fFid" at end
+  void closeFid();
+
+  u_int8_t recordTypeFromBuf() { return fBuf[0]; }
+  u_int8_t offsetFromBuf() { return fBuf[1]; }
+  u_int8_t sizeFromBuf() { return fBuf[2]; }
+  float pcrFromBuf(); // after "fBuf" has been read
+  unsigned long tsPacketNumFromBuf();
+  void setMPEGVersionFromRecordType(u_int8_t recordType);
+
+  Boolean rewindToCleanPoint(unsigned long&ixFound);
+      // used to implement "lookupTSPacketNumber()"
+
+private:
+  char* fFileName;
+  FILE* fFid; // used internally when reading from the file
+  int fMPEGVersion;
+  unsigned long fCurrentIndexRecordNum; // within "fFid"
+  float fCachedPCR;
+  unsigned long fCachedTSPacketNumber, fCachedIndexRecordNumber;
+  unsigned long fNumIndexRecords;
+  unsigned char fBuf[INDEX_RECORD_SIZE]; // used for reading index records from file
+};
+
+#endif
diff --git a/liveMedia/include/MPEG2TransportStreamMultiplexor.hh b/liveMedia/include/MPEG2TransportStreamMultiplexor.hh
new file mode 100644
index 0000000..7c7458b
--- /dev/null
+++ b/liveMedia/include/MPEG2TransportStreamMultiplexor.hh
@@ -0,0 +1,120 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class for generating MPEG-2 Transport Stream from one or more input
+// Elementary Stream data sources
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_MULTIPLEXOR_HH
+#define _MPEG2_TRANSPORT_STREAM_MULTIPLEXOR_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+#ifndef _MPEG_1OR2_DEMUX_HH
+#include "MPEG1or2Demux.hh" // for SCR
+#endif
+
+#define PID_TABLE_SIZE 0x2000 // 2^13
+
+class MPEG2TransportStreamMultiplexor: public FramedSource {
+public:
+  typedef void (onEndOfSegmentFunc)(void* clientData, double segmentDuration);
+  void setTimedSegmentation(unsigned segmentationDuration,
+			    onEndOfSegmentFunc* onEndOfSegmentFunc = NULL,
+			    void* onEndOfSegmentClientData = NULL);
+      // Specifies that PAT and PMT packets should be output every "segmentationDuration" seconds.
+      // (If "segmentationDuration" is 0 (the default value), then PAT and PMT packets are output
+      // at a preset frequency.)
+      // The optional function "onEndOfSegmentFunc" is called after each segment is output.
+  double currentSegmentDuration() const { return fCurrentSegmentDuration; }
+      // Valid only if "setTimedSegmentation()" was previously called with "segmentationDuration" > 0
+
+  Boolean canDeliverNewFrameImmediately() const { return fInputBufferBytesUsed < fInputBufferSize; }
+      // Can be used by a downstream reader to test whether the next call to "doGetNextFrame()"
+      // will deliver data immediately).
+
+protected:
+  MPEG2TransportStreamMultiplexor(UsageEnvironment& env);
+  virtual ~MPEG2TransportStreamMultiplexor();
+
+  virtual void awaitNewBuffer(unsigned char* oldBuffer) = 0;
+      // implemented by subclasses
+
+  void handleNewBuffer(unsigned char* buffer, unsigned bufferSize,
+		       int mpegVersion, MPEG1or2Demux::SCR scr, int16_t PID = -1);
+      // called by "awaitNewBuffer()"
+      // Note: For MPEG-4 video, set "mpegVersion" to 4; for H.264 video, set "mpegVersion" to 5;
+      //     for H.265 video, set "mpegVersion" to 6.
+      //     For Opus audio, set "mpegVersion" to 3.
+      // The buffer is assumed to be a PES packet, with a proper PES header.
+      // If "PID" is not -1, then it (currently, only the low 8 bits) is used as the stream's PID,
+      // otherwise the "stream_id" in the PES header is reused to be the stream's PID.
+
+private:
+  // Redefined virtual functions:
+  virtual Boolean isMPEG2TransportStreamMultiplexor() const;
+  virtual void doGetNextFrame();
+
+private:
+  void deliverDataToClient(u_int16_t pid, unsigned char* buffer, unsigned bufferSize,
+			   unsigned& startPositionInBuffer);
+
+  void deliverPATPacket();
+  void deliverPMTPacket(Boolean hasChanged);
+
+  void setProgramStreamMap(unsigned frameSize);
+
+protected:
+  Boolean fHaveVideoStreams;
+
+private:
+  unsigned fOutgoingPacketCounter;
+  unsigned fProgramMapVersion;
+  u_int8_t fPreviousInputProgramMapVersion, fCurrentInputProgramMapVersion;
+      // These two fields are used if we see "program_stream_map"s in the input.
+  struct {
+    unsigned counter;
+    u_int8_t streamType; // for use in Program Maps
+  } fPIDState[PID_TABLE_SIZE];
+  u_int16_t fPCR_PID, fCurrentPID; // only the low 13 bits are used
+  MPEG1or2Demux::SCR fPCR;
+  unsigned char* fInputBuffer;
+  unsigned fInputBufferSize, fInputBufferBytesUsed;
+  Boolean fIsFirstAdaptationField;
+  unsigned fSegmentationDuration;
+      // if nonzero, this is the number of seconds between successive 'segments'.  Each 'segment'
+      // begins with a PAT, followed by a PMT.
+      // if zero (the default value), then the frequency of PATs and PMTs depends on the constants
+      // PAT_PERIOD_IF_UNTIMED and PMT_PERIOD_IF_UNTIMED, defined in the .cpp file.
+  Boolean segmentationIsTimed() const { return fSegmentationDuration > 0; }
+  u_int8_t fSegmentationIndication;
+      // used only if fSegmentationDuration > 0:
+      // 1 if a segment has just ended and the next packet is to be a PAT
+      // 2 if a segment has just ended and the following PAT has been sent; a PMT is next
+      // 0 otherwise
+  double fCurrentSegmentDuration, fPreviousPTS; // used only if fSegmentationDuration > 0
+  onEndOfSegmentFunc* fOnEndOfSegmentFunc; // used only if fSegmentationDuration > 0
+  void* fOnEndOfSegmentClientData; // ditto
+};
+
+
+// The CRC calculation function that Transport Streams use.  We make this function public
+// here in case it's useful elsewhere:
+u_int32_t calculateCRC(u_int8_t const* data, unsigned dataLength, u_int32_t initialValue = 0xFFFFFFFF);
+
+#endif
diff --git a/liveMedia/include/MPEG2TransportStreamTrickModeFilter.hh b/liveMedia/include/MPEG2TransportStreamTrickModeFilter.hh
new file mode 100644
index 0000000..85066c1
--- /dev/null
+++ b/liveMedia/include/MPEG2TransportStreamTrickModeFilter.hh
@@ -0,0 +1,99 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.// A filter that converts a MPEG Transport Stream file - with corresponding index file
+// - to a corresponding Video Elementary Stream.  It also uses a "scale" parameter
+// to implement 'trick mode' (fast forward or reverse play, using I-frames) on
+// the video stream.
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_STREAM_TRICK_MODE_FILTER_HH
+#define _MPEG2_TRANSPORT_STREAM_TRICK_MODE_FILTER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+#ifndef _MPEG2_TRANSPORT_STREAM_INDEX_FILE_HH
+#include "MPEG2TransportStreamIndexFile.hh"
+#endif
+
+#ifndef TRANSPORT_PACKET_SIZE
+#define TRANSPORT_PACKET_SIZE 188
+#endif
+
+class MPEG2TransportStreamTrickModeFilter: public FramedFilter {
+public:
+  static MPEG2TransportStreamTrickModeFilter*
+  createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    MPEG2TransportStreamIndexFile* indexFile, int scale);
+
+  Boolean seekTo(unsigned long tsPacketNumber, unsigned long indexRecordNumber);
+
+  unsigned long nextIndexRecordNum() const { return fNextIndexRecordNum; }
+
+  void forgetInputSource() { fInputSource = NULL; }
+      // this lets us delete this without also deleting the input Transport Stream
+
+protected:
+  MPEG2TransportStreamTrickModeFilter(UsageEnvironment& env, FramedSource* inputSource,
+				      MPEG2TransportStreamIndexFile* indexFile, int scale);
+      // called only by createNew()
+  virtual ~MPEG2TransportStreamTrickModeFilter();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+private:
+  void attemptDeliveryToClient();
+  void seekToTransportPacket(unsigned long tsPacketNum);
+  void readTransportPacket(unsigned long tsPacketNum); // asynchronously
+
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize);
+
+  static void onSourceClosure(void* clientData);
+  void onSourceClosure1();
+
+private:
+  Boolean fHaveStarted;
+  MPEG2TransportStreamIndexFile* fIndexFile;
+  int fScale; // absolute value
+  int fDirection; // 1 => forward; -1 => reverse
+  enum {
+    SKIPPING_FRAME,
+    DELIVERING_SAVED_FRAME,
+    SAVING_AND_DELIVERING_FRAME
+  } fState;
+  unsigned fFrameCount;
+  unsigned long fNextIndexRecordNum; // next to be read from the index file
+  unsigned long fNextTSPacketNum; // next to be read from the transport stream file
+  unsigned char fInputBuffer[TRANSPORT_PACKET_SIZE];
+  unsigned long fCurrentTSPacketNum; // corresponding to data currently in the buffer
+  unsigned long fDesiredTSPacketNum;
+  u_int8_t fDesiredDataOffset, fDesiredDataSize;
+  float fDesiredDataPCR, fFirstPCR;
+  unsigned long fSavedFrameIndexRecordStart;
+  unsigned long fSavedSequentialIndexRecordNum;
+  Boolean fUseSavedFrameNextTime;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG2TransportUDPServerMediaSubsession.hh b/liveMedia/include/MPEG2TransportUDPServerMediaSubsession.hh
new file mode 100644
index 0000000..bd4dc8a
--- /dev/null
+++ b/liveMedia/include/MPEG2TransportUDPServerMediaSubsession.hh
@@ -0,0 +1,55 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an incoming UDP (or RTP/UDP) MPEG-2 Transport Stream
+// C++ header
+
+#ifndef _MPEG2_TRANSPORT_UDP_SERVER_MEDIA_SUBSESSION_HH
+#define _MPEG2_TRANSPORT_UDP_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _ON_DEMAND_SERVER_MEDIA_SUBSESSION_HH
+#include "OnDemandServerMediaSubsession.hh"
+#endif
+
+class MPEG2TransportUDPServerMediaSubsession: public OnDemandServerMediaSubsession {
+public:
+  static MPEG2TransportUDPServerMediaSubsession*
+  createNew(UsageEnvironment& env,
+	    char const* inputAddressStr, // An IP multicast address, or use "0.0.0.0" or NULL for unicast input
+	    Port const& inputPort,
+	    Boolean inputStreamIsRawUDP = False); // otherwise (default) the input stream is RTP/UDP
+protected:
+  MPEG2TransportUDPServerMediaSubsession(UsageEnvironment& env,
+					 char const* inputAddressStr, Port const& inputPort, Boolean inputStreamIsRawUDP);
+      // called only by createNew();
+  virtual ~MPEG2TransportUDPServerMediaSubsession();
+
+protected: // redefined virtual functions
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+				    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+protected:
+  char const* fInputAddressStr;
+  Port fInputPort;
+  Groupsock* fInputGroupsock;
+  Boolean fInputStreamIsRawUDP;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG4ESVideoRTPSink.hh b/liveMedia/include/MPEG4ESVideoRTPSink.hh
new file mode 100644
index 0000000..5779bbb
--- /dev/null
+++ b/liveMedia/include/MPEG4ESVideoRTPSink.hh
@@ -0,0 +1,72 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for MPEG-4 Elementary Stream video (RFC 3016)
+// C++ header
+
+#ifndef _MPEG4ES_VIDEO_RTP_SINK_HH
+#define _MPEG4ES_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+
+class MPEG4ESVideoRTPSink: public VideoRTPSink {
+public:
+  static MPEG4ESVideoRTPSink* createNew(UsageEnvironment& env,
+					Groupsock* RTPgs, unsigned char rtpPayloadFormat,
+					u_int32_t rtpTimestampFrequency = 90000);
+  static MPEG4ESVideoRTPSink* createNew(UsageEnvironment& env,
+					Groupsock* RTPgs, unsigned char rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
+					u_int8_t profileAndLevelIndication, char const* configStr);
+    // an optional variant of "createNew()", useful if we know, in advance, the stream's 'configuration' info.
+
+
+protected:
+  MPEG4ESVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
+		      u_int8_t profileAndLevelIndication = 0, char const* configStr = NULL);
+	// called only by createNew()
+
+  virtual ~MPEG4ESVideoRTPSink();
+
+protected: // redefined virtual functions:
+  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual Boolean allowFragmentationAfterStart() const;
+  virtual Boolean
+  frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+				 unsigned numBytesInFrame) const;
+
+  virtual char const* auxSDPLine();
+
+protected:
+  Boolean fVOPIsPresent;
+
+private:
+  u_int8_t fProfileAndLevelIndication;
+  unsigned char* fConfigBytes;
+  unsigned fNumConfigBytes;
+
+  char* fFmtpSDPLine;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG4ESVideoRTPSource.hh b/liveMedia/include/MPEG4ESVideoRTPSource.hh
new file mode 100644
index 0000000..4d6f34e
--- /dev/null
+++ b/liveMedia/include/MPEG4ESVideoRTPSource.hh
@@ -0,0 +1,51 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MP4V-ES video RTP stream sources
+// C++ header
+
+#ifndef _MPEG4_ES_VIDEO_RTP_SOURCE_HH
+#define _MPEG4_ES_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class MPEG4ESVideoRTPSource: public MultiFramedRTPSource {
+public:
+  static MPEG4ESVideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency);
+
+protected:
+  virtual ~MPEG4ESVideoRTPSource();
+
+private:
+  MPEG4ESVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			unsigned char rtpPayloadFormat,
+			unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG4GenericRTPSink.hh b/liveMedia/include/MPEG4GenericRTPSink.hh
new file mode 100644
index 0000000..039aa66
--- /dev/null
+++ b/liveMedia/include/MPEG4GenericRTPSink.hh
@@ -0,0 +1,70 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MPEG4-GENERIC ("audio", "video", or "application") RTP stream sinks
+// C++ header
+
+#ifndef _MPEG4_GENERIC_RTP_SINK_HH
+#define _MPEG4_GENERIC_RTP_SINK_HH
+
+#ifndef _MULTI_FRAMED_RTP_SINK_HH
+#include "MultiFramedRTPSink.hh"
+#endif
+
+class MPEG4GenericRTPSink: public MultiFramedRTPSink {
+public:
+  static MPEG4GenericRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    u_int8_t rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
+	    char const* sdpMediaTypeString, char const* mpeg4Mode,
+	    char const* configString,
+	    unsigned numChannels = 1);
+
+protected:
+  MPEG4GenericRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		      u_int8_t rtpPayloadFormat,
+		      u_int32_t rtpTimestampFrequency,
+		      char const* sdpMediaTypeString,
+		      char const* mpeg4Mode, char const* configString,
+		      unsigned numChannels);
+	// called only by createNew()
+
+  virtual ~MPEG4GenericRTPSink();
+
+private: // redefined virtual functions:
+  virtual
+  Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+					 unsigned numBytesInFrame) const;
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual unsigned specialHeaderSize() const;
+
+  virtual char const* sdpMediaType() const;
+
+  virtual char const* auxSDPLine(); // for the "a=fmtp:" SDP line
+
+private:
+  char const* fSDPMediaTypeString;
+  char const* fMPEG4Mode;
+  char const* fConfigString;
+  char* fFmtpSDPLine;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG4GenericRTPSource.hh b/liveMedia/include/MPEG4GenericRTPSource.hh
new file mode 100644
index 0000000..c6ea4e7
--- /dev/null
+++ b/liveMedia/include/MPEG4GenericRTPSource.hh
@@ -0,0 +1,78 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MPEG4-GENERIC ("audio", "video", or "application") RTP stream sources
+// C++ header
+
+#ifndef _MPEG4_GENERIC_RTP_SOURCE_HH
+#define _MPEG4_GENERIC_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class MPEG4GenericRTPSource: public MultiFramedRTPSource {
+public:
+  static MPEG4GenericRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency,
+	    char const* mediumName,
+	    char const* mode, unsigned sizeLength, unsigned indexLength,
+	    unsigned indexDeltaLength
+	    // add other parameters later
+	    );
+  // mediumName is "audio", "video", or "application"
+  // it *cannot* be NULL
+
+protected:
+  MPEG4GenericRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			unsigned char rtpPayloadFormat,
+			unsigned rtpTimestampFrequency,
+			char const* mediumName,
+			char const* mode,
+			unsigned sizeLength, unsigned indexLength,
+			unsigned indexDeltaLength
+			);
+      // called only by createNew(), or by subclass constructors
+  virtual ~MPEG4GenericRTPSource();
+
+protected:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  char* fMIMEType;
+
+  char* fMode;
+  unsigned fSizeLength, fIndexLength, fIndexDeltaLength;
+  unsigned fNumAUHeaders; // in the most recently read packet
+  unsigned fNextAUHeader; // index of the next AU Header to read
+  struct AUHeader* fAUHeaders;
+
+  friend class MPEG4GenericBufferedPacket;
+};
+
+
+
+// A function that looks up the sampling frequency from an
+// "AudioSpecificConfig" string.  (0 means 'unknown')
+unsigned samplingFrequencyFromAudioSpecificConfig(char const* configStr);
+
+#endif
diff --git a/liveMedia/include/MPEG4LATMAudioRTPSink.hh b/liveMedia/include/MPEG4LATMAudioRTPSink.hh
new file mode 100644
index 0000000..f3288cc
--- /dev/null
+++ b/liveMedia/include/MPEG4LATMAudioRTPSink.hh
@@ -0,0 +1,69 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for MPEG-4 audio, using LATM multiplexing (RFC 3016)
+// (Note that the initial 'size' field is assumed to be present at the start of
+//  each frame.)
+// C++ header
+
+#ifndef _MPEG4_LATM_AUDIO_RTP_SINK_HH
+#define _MPEG4_LATM_AUDIO_RTP_SINK_HH
+
+#ifndef _AUDIO_RTP_SINK_HH
+#include "AudioRTPSink.hh"
+#endif
+
+class MPEG4LATMAudioRTPSink: public AudioRTPSink {
+public:
+  static MPEG4LATMAudioRTPSink* createNew(UsageEnvironment& env,
+					  Groupsock* RTPgs,
+					  unsigned char rtpPayloadFormat,
+					  u_int32_t rtpTimestampFrequency,
+					  char const* streamMuxConfigString,
+					  unsigned numChannels,
+					  Boolean allowMultipleFramesPerPacket = False);
+
+protected:
+  MPEG4LATMAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+			unsigned char rtpPayloadFormat,
+			u_int32_t rtpTimestampFrequency,
+			char const* streamMuxConfigString,
+			unsigned numChannels,
+			Boolean allowMultipleFramesPerPacket);
+	// called only by createNew()
+
+  virtual ~MPEG4LATMAudioRTPSink();
+
+private: // redefined virtual functions:
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual Boolean
+  frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+				 unsigned numBytesInFrame) const;
+
+  virtual char const* auxSDPLine(); // for the "a=fmtp:" SDP line
+
+private:
+  char const* fStreamMuxConfigString;
+  char* fFmtpSDPLine;
+  Boolean fAllowMultipleFramesPerPacket;
+};
+
+#endif
diff --git a/liveMedia/include/MPEG4LATMAudioRTPSource.hh b/liveMedia/include/MPEG4LATMAudioRTPSource.hh
new file mode 100644
index 0000000..39cbf06
--- /dev/null
+++ b/liveMedia/include/MPEG4LATMAudioRTPSource.hh
@@ -0,0 +1,101 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// MPEG-4 audio, using LATM multiplexing
+// C++ header
+
+#ifndef _MPEG4_LATM_AUDIO_RTP_SOURCE_HH
+#define _MPEG4_LATM_AUDIO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class MPEG4LATMAudioRTPSource: public MultiFramedRTPSource {
+public:
+  static MPEG4LATMAudioRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency);
+
+  // By default, the LATM data length field is included at the beginning of each
+  // returned frame.  To omit this field, call the following:
+  void omitLATMDataLengthField();
+
+  Boolean returnedFrameIncludesLATMDataLengthField() const { return fIncludeLATMDataLengthField; }
+
+protected:
+  virtual ~MPEG4LATMAudioRTPSource();
+
+private:
+  MPEG4LATMAudioRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			  unsigned char rtpPayloadFormat,
+			  unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  Boolean fIncludeLATMDataLengthField;
+};
+
+
+// A utility for parsing a "StreamMuxConfig" string
+Boolean
+parseStreamMuxConfigStr(char const* configStr,
+			// result parameters:
+			Boolean& audioMuxVersion,
+			Boolean& allStreamsSameTimeFraming,
+			unsigned char& numSubFrames,
+			unsigned char& numProgram,
+			unsigned char& numLayer,
+			unsigned char*& audioSpecificConfig,
+			unsigned& audioSpecificConfigSize);
+    // Parses "configStr" as a sequence of hexadecimal digits, representing
+    // a "StreamMuxConfig" (as defined in ISO.IEC 14496-3, table 1.21).
+    // Returns, in "audioSpecificConfig", a binary representation of
+    // the enclosed "AudioSpecificConfig" structure (of size
+    // "audioSpecificConfigSize" bytes).  The memory for this is allocated
+    // dynamically by this function; the caller is responsible for
+    // freeing it.  Other values, that precede "AudioSpecificConfig",
+    // are returned in the other parameters.
+    // Returns True iff the parsing succeeds.
+    // IMPORTANT NOTE: The implementation of this function currently assumes
+    // that everything after the first "numLayer" field is an
+    // "AudioSpecificConfig".  Therefore, it will not work properly if
+    // "audioMuxVersion" != 0, "numProgram" > 0, or "numLayer" > 0.
+    // Also, any 'other data' or CRC info will be included at
+    // the end of "audioSpecificConfig".
+
+unsigned char* parseStreamMuxConfigStr(char const* configStr,
+				       // result parameter:
+				       unsigned& audioSpecificConfigSize);
+    // A variant of the above that returns just the "AudioSpecificConfig" data
+    // (or NULL) if the parsing failed, without bothering with the other
+    // result parameters.
+
+unsigned char* parseGeneralConfigStr(char const* configStr,
+				     // result parameter:
+				     unsigned& configSize);
+    // A routine that parses an arbitrary config string, returning
+    // the result in binary form.
+
+#endif
diff --git a/liveMedia/include/MPEG4VideoFileServerMediaSubsession.hh b/liveMedia/include/MPEG4VideoFileServerMediaSubsession.hh
new file mode 100644
index 0000000..83dd060
--- /dev/null
+++ b/liveMedia/include/MPEG4VideoFileServerMediaSubsession.hh
@@ -0,0 +1,61 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from a MPEG-4 video file.
+// C++ header
+
+#ifndef _MPEG4_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _MPEG4_VIDEO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+
+class MPEG4VideoFileServerMediaSubsession: public FileServerMediaSubsession{
+public:
+  static MPEG4VideoFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource);
+
+  // Used to implement "getAuxSDPLine()":
+  void checkForAuxSDPLine1();
+  void afterPlayingDummy1();
+
+protected:
+  MPEG4VideoFileServerMediaSubsession(UsageEnvironment& env,
+				      char const* fileName, Boolean reuseFirstSource);
+      // called only by createNew();
+  virtual ~MPEG4VideoFileServerMediaSubsession();
+
+  void setDoneFlag() { fDoneFlag = ~0; }
+
+protected: // redefined virtual functions
+  virtual char const* getAuxSDPLine(RTPSink* rtpSink,
+				    FramedSource* inputSource);
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+
+private:
+  char* fAuxSDPLine;
+  char fDoneFlag; // used when setting up "fAuxSDPLine"
+  RTPSink* fDummyRTPSink; // ditto
+};
+
+#endif
diff --git a/liveMedia/include/MPEG4VideoStreamDiscreteFramer.hh b/liveMedia/include/MPEG4VideoStreamDiscreteFramer.hh
new file mode 100644
index 0000000..f201010
--- /dev/null
+++ b/liveMedia/include/MPEG4VideoStreamDiscreteFramer.hh
@@ -0,0 +1,73 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simplified version of "MPEG4VideoStreamFramer" that takes only complete,
+// discrete frames (rather than an arbitrary byte stream) as input.
+// This avoids the parsing and data copying overhead of the full
+// "MPEG4VideoStreamFramer".
+// C++ header
+
+#ifndef _MPEG4_VIDEO_STREAM_DISCRETE_FRAMER_HH
+#define _MPEG4_VIDEO_STREAM_DISCRETE_FRAMER_HH
+
+#ifndef _MPEG4_VIDEO_STREAM_FRAMER_HH
+#include "MPEG4VideoStreamFramer.hh"
+#endif
+
+class MPEG4VideoStreamDiscreteFramer: public MPEG4VideoStreamFramer {
+public:
+  static MPEG4VideoStreamDiscreteFramer*
+  createNew(UsageEnvironment& env, FramedSource* inputSource, Boolean leavePresentationTimesUnmodified = False);
+
+protected:
+  MPEG4VideoStreamDiscreteFramer(UsageEnvironment& env,
+				 FramedSource* inputSource, Boolean leavePresentationTimesUnmodified);
+      // called only by createNew()
+  virtual ~MPEG4VideoStreamDiscreteFramer();
+
+protected:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+protected:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+                          unsigned numTruncatedBytes,
+                          struct timeval presentationTime,
+                          unsigned durationInMicroseconds);
+
+  Boolean getNextFrameBit(u_int8_t& result);
+  Boolean getNextFrameBits(unsigned numBits, u_int32_t& result);
+    // Which are used by:
+  void analyzeVOLHeader();
+
+protected:
+  Boolean fLeavePresentationTimesUnmodified;
+  u_int32_t vop_time_increment_resolution;
+  unsigned fNumVTIRBits;
+  // # of bits needed to count to "vop_time_increment_resolution"
+  struct timeval fLastNonBFramePresentationTime;
+  unsigned fLastNonBFrameVop_time_increment;
+
+private:
+  unsigned fNumBitsSeenSoFar; // used by the getNextFrameBit*() routines
+};
+
+#endif
diff --git a/liveMedia/include/MPEG4VideoStreamFramer.hh b/liveMedia/include/MPEG4VideoStreamFramer.hh
new file mode 100644
index 0000000..d0cb351
--- /dev/null
+++ b/liveMedia/include/MPEG4VideoStreamFramer.hh
@@ -0,0 +1,75 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an MPEG-4 video elementary stream into
+//   frames for:
+// - Visual Object Sequence (VS) Header + Visual Object (VO) Header
+//   + Video Object Layer (VOL) Header
+// - Group of VOP (GOV) Header
+// - VOP frame
+// C++ header
+
+#ifndef _MPEG4_VIDEO_STREAM_FRAMER_HH
+#define _MPEG4_VIDEO_STREAM_FRAMER_HH
+
+#ifndef _MPEG_VIDEO_STREAM_FRAMER_HH
+#include "MPEGVideoStreamFramer.hh"
+#endif
+
+class MPEG4VideoStreamFramer: public MPEGVideoStreamFramer {
+public:
+  static MPEG4VideoStreamFramer*
+  createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+  u_int8_t profile_and_level_indication() const {
+    return fProfileAndLevelIndication;
+  }
+
+  unsigned char* getConfigBytes(unsigned& numBytes) const;
+
+  void setConfigInfo(u_int8_t profileAndLevelIndication, char const* configStr);
+    // Assigns the "profile_and_level_indication" number, and the 'config' bytes.
+    // If this function is not called, then this data is only assigned later, when it appears in the input stream.
+
+protected:
+  MPEG4VideoStreamFramer(UsageEnvironment& env,
+			 FramedSource* inputSource,
+			 Boolean createParser = True);
+      // called only by createNew(), or by subclass constructors
+  virtual ~MPEG4VideoStreamFramer();
+
+  void startNewConfig();
+  void appendToNewConfig(unsigned char* newConfigBytes,
+			 unsigned numNewBytes);
+  void completeNewConfig();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isMPEG4VideoStreamFramer() const;
+
+protected:
+  u_int8_t fProfileAndLevelIndication;
+  unsigned char* fConfigBytes;
+  unsigned fNumConfigBytes;
+
+private:
+  unsigned char* fNewConfigBytes;
+  unsigned fNumNewConfigBytes;
+  friend class MPEG4VideoStreamParser; // hack
+};
+
+#endif
diff --git a/liveMedia/include/MPEGVideoStreamFramer.hh b/liveMedia/include/MPEGVideoStreamFramer.hh
new file mode 100644
index 0000000..1afdd00
--- /dev/null
+++ b/liveMedia/include/MPEGVideoStreamFramer.hh
@@ -0,0 +1,85 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A filter that breaks up an MPEG video elementary stream into
+//   headers and frames
+// C++ header
+
+#ifndef _MPEG_VIDEO_STREAM_FRAMER_HH
+#define _MPEG_VIDEO_STREAM_FRAMER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+class TimeCode {
+public:
+  TimeCode();
+  virtual ~TimeCode();
+
+  int operator==(TimeCode const& arg2);
+  unsigned days, hours, minutes, seconds, pictures;
+};
+
+class MPEGVideoStreamFramer: public FramedFilter {
+public:
+  Boolean& pictureEndMarker() { return fPictureEndMarker; }
+      // a hack for implementing the RTP 'M' bit
+
+  void flushInput(); // called if there is a discontinuity (seeking) in the input
+
+protected:
+  MPEGVideoStreamFramer(UsageEnvironment& env, FramedSource* inputSource);
+      // we're an abstract base class
+  virtual ~MPEGVideoStreamFramer();
+
+  void computePresentationTime(unsigned numAdditionalPictures);
+      // sets "fPresentationTime"
+  void setTimeCode(unsigned hours, unsigned minutes, unsigned seconds,
+		   unsigned pictures, unsigned picturesSinceLastGOP);
+
+protected: // redefined virtual functions
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+private:
+  void reset();
+
+  static void continueReadProcessing(void* clientData,
+				     unsigned char* ptr, unsigned size,
+				     struct timeval presentationTime);
+  void continueReadProcessing();
+
+protected:
+  double fFrameRate; // Note: For MPEG-4, this is really a 'tick rate'
+  unsigned fPictureCount; // hack used to implement doGetNextFrame()
+  Boolean fPictureEndMarker;
+  struct timeval fPresentationTimeBase;
+
+  // parsing state
+  class MPEGVideoStreamParser* fParser;
+  friend class MPEGVideoStreamParser; // hack
+
+private:
+  TimeCode fCurGOPTimeCode, fPrevGOPTimeCode;
+  unsigned fPicturesAdjustment;
+  double fPictureTimeBase;
+  unsigned fTcSecsBase;
+  Boolean fHaveSeenFirstTimeCode;
+};
+
+#endif
diff --git a/liveMedia/include/MatroskaFile.hh b/liveMedia/include/MatroskaFile.hh
new file mode 100644
index 0000000..90ac205
--- /dev/null
+++ b/liveMedia/include/MatroskaFile.hh
@@ -0,0 +1,212 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class that encapsulates a Matroska file.
+// C++ header
+
+#ifndef _MATROSKA_FILE_HH
+#define _MATROSKA_FILE_HH
+
+#ifndef _RTP_SINK_HH
+#include "RTPSink.hh"
+#endif
+#ifndef _FILE_SINK_HH
+#include "FileSink.hh"
+#endif
+#ifndef _HASH_TABLE_HH
+#include "HashTable.hh"
+#endif
+
+class MatroskaTrack; // forward
+class MatroskaDemux; // forward
+
+class MatroskaFile: public Medium {
+public:
+  typedef void (onCreationFunc)(MatroskaFile* newFile, void* clientData);
+  static void createNew(UsageEnvironment& env, char const* fileName, onCreationFunc* onCreation, void* onCreationClientData,
+			char const* preferredLanguage = "eng");
+    // Note: Unlike most "createNew()" functions, this one doesn't return a new object immediately.  Instead, because this class
+    // requires file reading (to parse the Matroska 'Track' headers) before a new object can be initialized, the creation of a new
+    // object is signalled by calling - from the event loop - an 'onCreationFunc' that is passed as a parameter to "createNew()".
+
+  MatroskaTrack* lookup(unsigned trackNumber) const;
+
+  // Create a demultiplexor for extracting tracks from this file.  (Separate clients will typically have separate demultiplexors.)
+  MatroskaDemux* newDemux();
+
+  // Parameters of the file ('Segment'); set when the file is parsed:
+  unsigned timecodeScale() { return fTimecodeScale; } // in nanoseconds
+  float segmentDuration() { return fSegmentDuration; } // in units of "timecodeScale()"
+  float fileDuration(); // in seconds
+  
+  char const* fileName() const { return fFileName; }
+
+  unsigned chosenVideoTrackNumber() { return fChosenVideoTrackNumber; }
+  unsigned chosenAudioTrackNumber() { return fChosenAudioTrackNumber; }
+  unsigned chosenSubtitleTrackNumber() { return fChosenSubtitleTrackNumber; }
+
+  FramedSource*
+  createSourceForStreaming(FramedSource* baseSource, unsigned trackNumber,
+			   unsigned& estBitrate, unsigned& numFiltersInFrontOfTrack);
+    // Takes a data source (which must be a demultiplexed track from this file) and returns
+    // a (possibly modified) data source that can be used for streaming.
+
+  char const* trackMIMEType(unsigned trackNumber) const;
+      // in the form "<medium-name>/<CODEC-NAME>", or NULL if no such track exists
+
+  RTPSink* createRTPSinkForTrackNumber(unsigned trackNumber, Groupsock* rtpGroupsock,
+				       unsigned char rtpPayloadTypeIfDynamic);
+    // Creates a "RTPSink" object that would be appropriate for streaming the specified track,
+    // or NULL if no appropriate "RTPSink" exists
+
+  FileSink* createFileSinkForTrackNumber(unsigned trackNumber, char const* fileName);
+    // Creates a "FileSink" object that would be appropriate for recording the contents of
+    // the specified track, or NULL if no appropriate "FileSink" exists.
+
+private:
+  MatroskaFile(UsageEnvironment& env, char const* fileName, onCreationFunc* onCreation, void* onCreationClientData,
+	       char const* preferredLanguage);
+      // called only by createNew()
+  virtual ~MatroskaFile();
+
+  static void handleEndOfTrackHeaderParsing(void* clientData);
+  void handleEndOfTrackHeaderParsing();
+
+  void addTrack(MatroskaTrack* newTrack, unsigned trackNumber);
+  void addCuePoint(double cueTime, u_int64_t clusterOffsetInFile, unsigned blockNumWithinCluster);
+  Boolean lookupCuePoint(double& cueTime, u_int64_t& resultClusterOffsetInFile, unsigned& resultBlockNumWithinCluster);
+  void printCuePoints(FILE* fid);
+
+  void removeDemux(MatroskaDemux* demux);
+
+  void getH264ConfigData(MatroskaTrack const* track,
+			 u_int8_t*& sps, unsigned& spsSize,
+			 u_int8_t*& pps, unsigned& ppsSize);
+    // "sps","pps" are dynamically allocated by this function, and must be delete[]d afterwards
+  void getH265ConfigData(MatroskaTrack const* track,
+			 u_int8_t*& vps, unsigned& vpsSize,
+			 u_int8_t*& sps, unsigned& spsSize,
+			 u_int8_t*& pps, unsigned& ppsSize);
+    // "vps","sps","pps" are dynamically allocated by this function, and must be delete[]d afterwards
+
+  void getVorbisOrTheoraConfigData(MatroskaTrack const* track,
+				   u_int8_t*& identificationHeader, unsigned& identificationHeaderSize,
+				   u_int8_t*& commentHeader, unsigned& commentHeaderSize,
+				   u_int8_t*& setupHeader, unsigned& setupHeaderSize);
+    // "identificationHeader", "commentHeader", "setupHeader" are dynamically allocated by this function, and must be delete[]d afterwards
+
+private:
+  friend class MatroskaFileParser;
+  friend class MatroskaDemux;
+  char const* fFileName;
+  onCreationFunc* fOnCreation;
+  void* fOnCreationClientData;
+  char const* fPreferredLanguage;
+
+  unsigned fTimecodeScale; // in nanoseconds
+  float fSegmentDuration; // in units of "fTimecodeScale"
+  u_int64_t fSegmentDataOffset, fClusterOffset, fCuesOffset;
+
+  class MatroskaTrackTable* fTrackTable;
+  HashTable* fDemuxesTable;
+  class CuePoint* fCuePoints;
+  unsigned fChosenVideoTrackNumber, fChosenAudioTrackNumber, fChosenSubtitleTrackNumber;
+  class MatroskaFileParser* fParserForInitialization;
+};
+
+// We define our own track type codes as bits (powers of 2), so we can use the set of track types as a bitmap, representing a set:
+// (Note that MATROSKA_TRACK_TYPE_OTHER must be last, and have the largest value.)
+#define MATROSKA_TRACK_TYPE_VIDEO 0x01
+#define MATROSKA_TRACK_TYPE_AUDIO 0x02
+#define MATROSKA_TRACK_TYPE_SUBTITLE 0x04
+#define MATROSKA_TRACK_TYPE_OTHER 0x08
+
+class MatroskaTrack {
+public:
+  MatroskaTrack();
+  virtual ~MatroskaTrack();
+
+  // track parameters
+  unsigned trackNumber;
+  u_int8_t trackType;
+  Boolean isEnabled, isDefault, isForced;
+  unsigned defaultDuration;
+  char* name;
+  char* language;
+  char* codecID;
+  unsigned samplingFrequency;
+  unsigned numChannels;
+  char const* mimeType;
+  unsigned codecPrivateSize;
+  u_int8_t* codecPrivate;
+  Boolean codecPrivateUsesH264FormatForH265; // a hack specifically for H.265 video tracks
+  Boolean codecIsOpus; // a hack for Opus audio
+  unsigned headerStrippedBytesSize;
+  u_int8_t* headerStrippedBytes;
+  char const* colorSampling;
+  char const* colorimetry;
+  unsigned pixelWidth;
+  unsigned pixelHeight;
+  unsigned bitDepth;
+  unsigned subframeSizeSize; // 0 means: frames do not have subframes (the default behavior)
+  Boolean haveSubframes() const { return subframeSizeSize > 0; }
+};
+
+class MatroskaDemux: public Medium {
+public:
+  FramedSource* newDemuxedTrack();
+  FramedSource* newDemuxedTrack(unsigned& resultTrackNumber);
+      // Returns a new stream ("FramedSource" subclass) that represents the next preferred media
+      // track (video, audio, subtitle - in that order) from the file. (Preferred media tracks
+      // are based on the file's language preference.)
+      // This function returns NULL when no more media tracks exist.
+
+  FramedSource* newDemuxedTrackByTrackNumber(unsigned trackNumber);
+      // As above, but creates a new stream for a specific track number within the Matroska file.
+      // (You should not call this function more than once with the same track number.)
+
+    // Note: We assume that:
+    // - Every track created by "newDemuxedTrack()" is later read
+    // - All calls to "newDemuxedTrack()" are made before any track is read
+
+protected:
+  friend class MatroskaFile;
+  friend class MatroskaFileParser;
+  class MatroskaDemuxedTrack* lookupDemuxedTrack(unsigned trackNumber);
+
+  MatroskaDemux(MatroskaFile& ourFile); // we're created only by a "MatroskaFile" (a friend)
+  virtual ~MatroskaDemux();
+
+private:
+  friend class MatroskaDemuxedTrack;
+  void removeTrack(unsigned trackNumber);
+  void continueReading(); // called by a demuxed track to tell us that it has a pending read ("doGetNextFrame()")
+  void seekToTime(double& seekNPT);
+
+  static void handleEndOfFile(void* clientData);
+  void handleEndOfFile();
+
+private:
+  MatroskaFile& fOurFile;
+  class MatroskaFileParser* fOurParser;
+  HashTable* fDemuxedTracksTable;
+
+  // Used to implement "newServerMediaSubsession()":
+  u_int8_t fNextTrackTypeToCheck;
+};
+
+#endif
diff --git a/liveMedia/include/MatroskaFileServerDemux.hh b/liveMedia/include/MatroskaFileServerDemux.hh
new file mode 100644
index 0000000..d5572d6
--- /dev/null
+++ b/liveMedia/include/MatroskaFileServerDemux.hh
@@ -0,0 +1,84 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A server demultiplexor for a Matroska file
+// C++ header
+
+#ifndef _MATROSKA_FILE_SERVER_DEMUX_HH
+#define _MATROSKA_FILE_SERVER_DEMUX_HH
+
+#ifndef _SERVER_MEDIA_SESSION_HH
+#include "ServerMediaSession.hh"
+#endif
+
+#ifndef _MATROSKA_FILE_HH
+#include "MatroskaFile.hh"
+#endif
+
+class MatroskaFileServerDemux: public Medium {
+public:
+  typedef void (onCreationFunc)(MatroskaFileServerDemux* newDemux, void* clientData);
+  static void createNew(UsageEnvironment& env, char const* fileName,
+			onCreationFunc* onCreation, void* onCreationClientData,
+			char const* preferredLanguage = "eng");
+    // Note: Unlike most "createNew()" functions, this one doesn't return a new object immediately.  Instead, because this class
+    // requires file reading (to parse the Matroska 'Track' headers) before a new object can be initialized, the creation of a new
+    // object is signalled by calling - from the event loop - an 'onCreationFunc' that is passed as a parameter to "createNew()". 
+
+  ServerMediaSubsession* newServerMediaSubsession();
+  ServerMediaSubsession* newServerMediaSubsession(unsigned& resultTrackNumber);
+    // Returns a new "ServerMediaSubsession" object that represents the next preferred media track
+    // (video, audio, subtitle - in that order) from the file. (Preferred media tracks are based on the file's language preference.)
+    // This function returns NULL when no more media tracks exist.
+
+  ServerMediaSubsession* newServerMediaSubsessionByTrackNumber(unsigned trackNumber);
+    // As above, but creates a new "ServerMediaSubsession" object for a specific track number within the Matroska file.
+    // (You should not call this function more than once with the same track number.)
+
+  // The following public: member functions are called only by the "ServerMediaSubsession" objects:
+
+  MatroskaFile* ourMatroskaFile() { return fOurMatroskaFile; }
+  char const* fileName() const { return fFileName; }
+  float fileDuration() const { return fOurMatroskaFile->fileDuration(); }
+
+  FramedSource* newDemuxedTrack(unsigned clientSessionId, unsigned trackNumber);
+    // Used by the "ServerMediaSubsession" objects to implement their "createNewStreamSource()" virtual function.
+
+private:
+  MatroskaFileServerDemux(UsageEnvironment& env, char const* fileName,
+			  onCreationFunc* onCreation, void* onCreationClientData,
+			  char const* preferredLanguage);
+      // called only by createNew()
+  virtual ~MatroskaFileServerDemux();
+
+  static void onMatroskaFileCreation(MatroskaFile* newFile, void* clientData);
+  void onMatroskaFileCreation(MatroskaFile* newFile);
+private:
+  char const* fFileName; 
+  onCreationFunc* fOnCreation;
+  void* fOnCreationClientData;
+  MatroskaFile* fOurMatroskaFile;
+
+  // Used to implement "newServerMediaSubsession()":
+  u_int8_t fNextTrackTypeToCheck;
+
+  // Used to set up demuxing, to implement "newDemuxedTrack()":
+  unsigned fLastClientSessionId;
+  MatroskaDemux* fLastCreatedDemux;
+};
+
+#endif
diff --git a/liveMedia/include/Media.hh b/liveMedia/include/Media.hh
new file mode 100644
index 0000000..777a7d9
--- /dev/null
+++ b/liveMedia/include/Media.hh
@@ -0,0 +1,137 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Medium
+// C++ header
+
+#ifndef _MEDIA_HH
+#define _MEDIA_HH
+
+#ifndef _LIVEMEDIA_VERSION_HH
+#include "liveMedia_version.hh"
+#endif
+
+#ifndef _HASH_TABLE_HH
+#include "HashTable.hh"
+#endif
+
+#ifndef _USAGE_ENVIRONMENT_HH
+#include "UsageEnvironment.hh"
+#endif
+
+// Lots of files end up needing the following, so just #include them here:
+#ifndef _NET_COMMON_H
+#include "NetCommon.h"
+#endif
+#include <stdio.h>
+
+// The following makes the Borland compiler happy:
+#ifdef __BORLANDC__
+#define _strnicmp strnicmp
+#define fabsf(x) fabs(x)
+#endif
+
+#define mediumNameMaxLen 30
+
+class Medium {
+public:
+  static Boolean lookupByName(UsageEnvironment& env,
+			      char const* mediumName,
+			      Medium*& resultMedium);
+  static void close(UsageEnvironment& env, char const* mediumName);
+  static void close(Medium* medium); // alternative close() method using ptrs
+      // (has no effect if medium == NULL)
+
+  UsageEnvironment& envir() const {return fEnviron;}
+
+  char const* name() const {return fMediumName;}
+
+  // Test for specific types of media:
+  virtual Boolean isSource() const;
+  virtual Boolean isSink() const;
+  virtual Boolean isRTCPInstance() const;
+  virtual Boolean isRTSPClient() const;
+  virtual Boolean isRTSPServer() const;
+  virtual Boolean isMediaSession() const;
+  virtual Boolean isServerMediaSession() const;
+
+protected:
+  friend class MediaLookupTable;
+  Medium(UsageEnvironment& env); // abstract base class
+  virtual ~Medium(); // instances are deleted using close() only
+
+  TaskToken& nextTask() {
+	return fNextTask;
+  }
+
+private:
+  UsageEnvironment& fEnviron;
+  char fMediumName[mediumNameMaxLen];
+  TaskToken fNextTask;
+};
+
+
+// A data structure for looking up a Medium by its string name.
+// (It is used only to implement "Medium", but we make it visible here, in case developers want to use it to iterate over
+//  the whole set of "Medium" objects that we've created.)
+class MediaLookupTable {
+public:
+  static MediaLookupTable* ourMedia(UsageEnvironment& env);
+  HashTable const& getTable() { return *fTable; }
+
+protected:
+  MediaLookupTable(UsageEnvironment& env);
+  virtual ~MediaLookupTable();
+
+private:
+  friend class Medium;
+
+  Medium* lookup(char const* name) const;
+  // Returns NULL if none already exists
+
+  void addNew(Medium* medium, char* mediumName);
+  void remove(char const* name);
+
+  void generateNewName(char* mediumName, unsigned maxLen);
+
+private:
+  UsageEnvironment& fEnv;
+  HashTable* fTable;
+  unsigned fNameGenerator;
+};
+
+
+// The structure pointed to by the "liveMediaPriv" UsageEnvironment field:
+class _Tables {
+public:
+  static _Tables* getOurTables(UsageEnvironment& env, Boolean createIfNotPresent = True);
+      // returns a pointer to a "_Tables" structure (creating it if necessary)
+  void reclaimIfPossible();
+      // used to delete ourselves when we're no longer used
+
+  MediaLookupTable* mediaTable;
+  void* socketTable;
+
+protected:
+  _Tables(UsageEnvironment& env);
+  virtual ~_Tables();
+
+private:
+  UsageEnvironment& fEnv;
+};
+
+#endif
diff --git a/liveMedia/include/MediaSession.hh b/liveMedia/include/MediaSession.hh
new file mode 100644
index 0000000..0ddd0be
--- /dev/null
+++ b/liveMedia/include/MediaSession.hh
@@ -0,0 +1,362 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A data structure that represents a session that consists of
+// potentially multiple (audio and/or video) sub-sessions
+// (This data structure is used for media *receivers* - i.e., clients.
+//  For media streamers, use "ServerMediaSession" instead.)
+// C++ header
+
+/* NOTE: To support receiving your own custom RTP payload format, you must first define a new
+   subclass of "MultiFramedRTPSource" (or "BasicUDPSource") that implements it.
+   Then define your own subclass of "MediaSession" and "MediaSubsession", as follows:
+   - In your subclass of "MediaSession" (named, for example, "myMediaSession"):
+       - Define and implement your own static member function
+           static myMediaSession* createNew(UsageEnvironment& env, char const* sdpDescription);
+	 and call this - instead of "MediaSession::createNew()" - in your application,
+	 when you create a new "MediaSession" object.
+       - Reimplement the "createNewMediaSubsession()" virtual function, as follows:
+           MediaSubsession* myMediaSession::createNewMediaSubsession() { return new myMediaSubsession(*this); }
+   - In your subclass of "MediaSubsession" (named, for example, "myMediaSubsession"):
+       - Reimplement the "createSourceObjects()" virtual function, perhaps similar to this:
+           Boolean myMediaSubsession::createSourceObjects(int useSpecialRTPoffset) {
+	     if (strcmp(fCodecName, "X-MY-RTP-PAYLOAD-FORMAT") == 0) {
+	       // This subsession uses our custom RTP payload format:
+	       fReadSource = fRTPSource = myRTPPayloadFormatRTPSource::createNew( <parameters> );
+	       return True;
+	     } else {
+	       // This subsession uses some other RTP payload format - perhaps one that we already implement:
+	       return ::createSourceObjects(useSpecialRTPoffset);
+	     }
+	   }  
+*/
+
+#ifndef _MEDIA_SESSION_HH
+#define _MEDIA_SESSION_HH
+
+#ifndef _RTCP_HH
+#include "RTCP.hh"
+#endif
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+#ifndef _SRTP_CRYPTOGRAPHIC_CONTEXT_HH
+#include "SRTPCryptographicContext.hh"
+#endif
+
+class MediaSubsession; // forward
+
+class MediaSession: public Medium {
+public:
+  static MediaSession* createNew(UsageEnvironment& env,
+				 char const* sdpDescription);
+
+  static Boolean lookupByName(UsageEnvironment& env, char const* sourceName,
+			      MediaSession*& resultSession);
+
+  Boolean hasSubsessions() const { return fSubsessionsHead != NULL; }
+
+  char* connectionEndpointName() const { return fConnectionEndpointName; }
+  char const* CNAME() const { return fCNAME; }
+  struct in_addr const& sourceFilterAddr() const { return fSourceFilterAddr; }
+  float& scale() { return fScale; }
+  float& speed() { return fSpeed; }
+  char* mediaSessionType() const { return fMediaSessionType; }
+  char* sessionName() const { return fSessionName; }
+  char* sessionDescription() const { return fSessionDescription; }
+  char const* controlPath() const { return fControlPath; }
+
+  double& playStartTime() { return fMaxPlayStartTime; }
+  double& playEndTime() { return fMaxPlayEndTime; }
+  char* absStartTime() const;
+  char* absEndTime() const;
+  // Used only to set the local fields:
+  char*& _absStartTime() { return fAbsStartTime; }
+  char*& _absEndTime() { return fAbsEndTime; }
+
+  Boolean initiateByMediaType(char const* mimeType,
+			      MediaSubsession*& resultSubsession,
+			      int useSpecialRTPoffset = -1);
+      // Initiates the first subsession with the specified MIME type
+      // Returns the resulting subsession, or 'multi source' (not both)
+
+  MIKEYState* getMIKEYState() const { return fMIKEYState; }
+  SRTPCryptographicContext* getCrypto() const { return fCrypto; }
+
+protected: // redefined virtual functions
+  virtual Boolean isMediaSession() const;
+
+protected:
+  MediaSession(UsageEnvironment& env);
+      // called only by createNew();
+  virtual ~MediaSession();
+
+  virtual MediaSubsession* createNewMediaSubsession();
+
+  Boolean initializeWithSDP(char const* sdpDescription);
+  Boolean parseSDPLine(char const* input, char const*& nextLine);
+  Boolean parseSDPLine_s(char const* sdpLine);
+  Boolean parseSDPLine_i(char const* sdpLine);
+  Boolean parseSDPLine_c(char const* sdpLine);
+  Boolean parseSDPAttribute_type(char const* sdpLine);
+  Boolean parseSDPAttribute_control(char const* sdpLine);
+  Boolean parseSDPAttribute_range(char const* sdpLine);
+  Boolean parseSDPAttribute_source_filter(char const* sdpLine);
+  Boolean parseSDPAttribute_key_mgmt(char const* sdpLine);
+
+  static char* lookupPayloadFormat(unsigned char rtpPayloadType,
+				   unsigned& rtpTimestampFrequency,
+				   unsigned& numChannels);
+  static unsigned guessRTPTimestampFrequency(char const* mediumName,
+					     char const* codecName);
+
+protected:
+  friend class MediaSubsessionIterator;
+  char* fCNAME; // used for RTCP
+
+  // Linkage fields:
+  MediaSubsession* fSubsessionsHead;
+  MediaSubsession* fSubsessionsTail;
+
+  // Fields set from a SDP description:
+  char* fConnectionEndpointName;
+  double fMaxPlayStartTime;
+  double fMaxPlayEndTime;
+  char* fAbsStartTime;
+  char* fAbsEndTime;
+  struct in_addr fSourceFilterAddr; // used for SSM
+  float fScale; // set from a RTSP "Scale:" header
+  float fSpeed;
+  char* fMediaSessionType; // holds a=type value
+  char* fSessionName; // holds s=<session name> value
+  char* fSessionDescription; // holds i=<session description> value
+  char* fControlPath; // holds optional a=control: string
+
+  // Optional key management and crypto state:
+  MIKEYState* fMIKEYState;
+  SRTPCryptographicContext* fCrypto;
+};
+
+
+class MediaSubsessionIterator {
+public:
+  MediaSubsessionIterator(MediaSession const& session);
+  virtual ~MediaSubsessionIterator();
+
+  MediaSubsession* next(); // NULL if none
+  void reset();
+
+private:
+  MediaSession const& fOurSession;
+  MediaSubsession* fNextPtr;
+};
+
+
+class MediaSubsession {
+public:
+  MediaSession& parentSession() { return fParent; }
+  MediaSession const& parentSession() const { return fParent; }
+
+  unsigned short clientPortNum() const { return fClientPortNum; }
+  unsigned char rtpPayloadFormat() const { return fRTPPayloadFormat; }
+  char const* savedSDPLines() const { return fSavedSDPLines; }
+  char const* mediumName() const { return fMediumName; }
+  char const* codecName() const { return fCodecName; }
+  char const* protocolName() const { return fProtocolName; }
+  char const* controlPath() const { return fControlPath; }
+
+  Boolean isSSM() const { return fSourceFilterAddr.s_addr != 0; }
+
+  unsigned short videoWidth() const { return fVideoWidth; }
+  unsigned short videoHeight() const { return fVideoHeight; }
+  unsigned videoFPS() const { return fVideoFPS; }
+  unsigned numChannels() const { return fNumChannels; }
+  float& scale() { return fScale; }
+  float& speed() { return fSpeed; }
+
+  RTPSource* rtpSource() { return fRTPSource; }
+  RTCPInstance* rtcpInstance() { return fRTCPInstance; }
+  unsigned rtpTimestampFrequency() const { return fRTPTimestampFrequency; }
+  Boolean rtcpIsMuxed() const { return fMultiplexRTCPWithRTP; }
+  FramedSource* readSource() { return fReadSource; }
+    // This is the source that client sinks read from.  It is usually
+    // (but not necessarily) the same as "rtpSource()"
+  void addFilter(FramedFilter* filter);
+    // Changes "readSource()" to "filter" (which must have just been created with "readSource()" as its input)
+
+  double playStartTime() const;
+  double playEndTime() const;
+  char* absStartTime() const;
+  char* absEndTime() const;
+  // Used only to set the local fields:
+  double& _playStartTime() { return fPlayStartTime; }
+  double& _playEndTime() { return fPlayEndTime; }
+  char*& _absStartTime() { return fAbsStartTime; }
+  char*& _absEndTime() { return fAbsEndTime; }
+
+  Boolean initiate(int useSpecialRTPoffset = -1);
+      // Creates a "RTPSource" for this subsession. (Has no effect if it's
+      // already been created.)  Returns True iff this succeeds.
+  void deInitiate(); // Destroys any previously created RTPSource
+  Boolean setClientPortNum(unsigned short portNum);
+      // Sets the preferred client port number that any "RTPSource" for
+      // this subsession would use.  (By default, the client port number
+      // is gotten from the original SDP description, or - if the SDP
+      // description does not specfy a client port number - an ephemeral
+      // (even) port number is chosen.)  This routine must *not* be
+      // called after initiate().
+  void receiveRawMP3ADUs() { fReceiveRawMP3ADUs = True; } // optional hack for audio/MPA-ROBUST; must not be called after initiate()
+  void receiveRawJPEGFrames() { fReceiveRawJPEGFrames = True; } // optional hack for video/JPEG; must not be called after initiate()
+  char*& connectionEndpointName() { return fConnectionEndpointName; }
+  char const* connectionEndpointName() const {
+    return fConnectionEndpointName;
+  }
+
+  // 'Bandwidth' parameter, set in the "b=" SDP line:
+  unsigned bandwidth() const { return fBandwidth; }
+
+  // General SDP attribute accessor functions:
+  char const* attrVal_str(char const* attrName) const;
+      // returns "" if attribute doesn't exist (and has no default value), or is not a string
+  char const* attrVal_strToLower(char const* attrName) const;
+      // returns "" if attribute doesn't exist (and has no default value), or is not a string
+  unsigned attrVal_int(char const* attrName) const;
+      // also returns 0 if attribute doesn't exist (and has no default value)
+  unsigned attrVal_unsigned(char const* attrName) const { return (unsigned)attrVal_int(attrName); }
+  Boolean attrVal_bool(char const* attrName) const { return attrVal_int(attrName) != 0; }
+
+  // Old, now-deprecated SDP attribute accessor functions, kept here for backwards-compatibility:
+  char const* fmtp_config() const;
+  char const* fmtp_configuration() const { return fmtp_config(); }
+  char const* fmtp_spropparametersets() const { return attrVal_str("sprop-parameter-sets"); }
+  char const* fmtp_spropvps() const { return attrVal_str("sprop-vps"); }
+  char const* fmtp_spropsps() const { return attrVal_str("sprop-sps"); }
+  char const* fmtp_sproppps() const { return attrVal_str("sprop-pps"); }
+
+  netAddressBits connectionEndpointAddress() const;
+      // Converts "fConnectionEndpointName" to an address (or 0 if unknown)
+  void setDestinations(netAddressBits defaultDestAddress);
+      // Uses "fConnectionEndpointName" and "serverPortNum" to set
+      // the destination address and port of the RTP and RTCP objects.
+      // This is typically called by RTSP clients after doing "SETUP".
+
+  char const* sessionId() const { return fSessionId; }
+  void setSessionId(char const* sessionId);
+
+  // Public fields that external callers can use to keep state.
+  // (They are responsible for all storage management on these fields)
+  unsigned short serverPortNum; // in host byte order (used by RTSP)
+  unsigned char rtpChannelId, rtcpChannelId; // used by RTSP (for RTP/TCP)
+  MediaSink* sink; // callers can use this to keep track of who's playing us
+  void* miscPtr; // callers can use this for whatever they want
+
+  // Parameters set from a RTSP "RTP-Info:" header:
+  struct {
+    u_int16_t seqNum;
+    u_int32_t timestamp;
+    Boolean infoIsNew; // not part of the RTSP header; instead, set whenever this struct is filled in
+  } rtpInfo;
+
+  double getNormalPlayTime(struct timeval const& presentationTime);
+  // Computes the stream's "Normal Play Time" (NPT) from the given "presentationTime".
+  // (For the definition of "Normal Play Time", see RFC 2326, section 3.6.)
+  // This function is useful only if the "rtpInfo" structure was previously filled in
+  // (e.g., by a "RTP-Info:" header in a RTSP response).
+  // Also, for this function to work properly, the RTP stream's presentation times must (eventually) be
+  // synchronized via RTCP.
+  // (Note: If this function returns a negative number, then the result should be ignored by the caller.)
+
+  MIKEYState* getMIKEYState() const { return fMIKEYState != NULL ? fMIKEYState : fParent.getMIKEYState(); }
+  SRTPCryptographicContext* getCrypto() const { return fCrypto != NULL ? fCrypto : fParent.getCrypto(); }
+
+protected:
+  friend class MediaSession;
+  friend class MediaSubsessionIterator;
+  MediaSubsession(MediaSession& parent);
+  virtual ~MediaSubsession();
+
+  UsageEnvironment& env() { return fParent.envir(); }
+  void setNext(MediaSubsession* next) { fNext = next; }
+
+  void setAttribute(char const* name, char const* value = NULL, Boolean valueIsHexadecimal = False);
+
+  Boolean parseSDPLine_c(char const* sdpLine);
+  Boolean parseSDPLine_b(char const* sdpLine);
+  Boolean parseSDPAttribute_rtpmap(char const* sdpLine);
+  Boolean parseSDPAttribute_rtcpmux(char const* sdpLine);
+  Boolean parseSDPAttribute_control(char const* sdpLine);
+  Boolean parseSDPAttribute_range(char const* sdpLine);
+  Boolean parseSDPAttribute_fmtp(char const* sdpLine);
+  Boolean parseSDPAttribute_source_filter(char const* sdpLine);
+  Boolean parseSDPAttribute_x_dimensions(char const* sdpLine);
+  Boolean parseSDPAttribute_framerate(char const* sdpLine);
+  Boolean parseSDPAttribute_key_mgmt(char const* sdpLine);
+
+  virtual Boolean createSourceObjects(int useSpecialRTPoffset);
+    // create "fRTPSource" and "fReadSource" member objects, after we've been initialized via SDP
+
+protected:
+  // Linkage fields:
+  MediaSession& fParent;
+  MediaSubsession* fNext;
+
+  // Fields set from a SDP description:
+  char* fConnectionEndpointName; // may also be set by RTSP SETUP response
+  unsigned short fClientPortNum; // in host byte order
+      // This field is also set by initiate()
+  unsigned char fRTPPayloadFormat;
+  char* fSavedSDPLines;
+  char* fMediumName;
+  char* fCodecName;
+  char* fProtocolName;
+  unsigned fRTPTimestampFrequency;
+  Boolean fMultiplexRTCPWithRTP;
+  char* fControlPath; // holds optional a=control: string
+
+  // Optional key management and crypto state:
+  MIKEYState* fMIKEYState;
+  SRTPCryptographicContext* fCrypto;
+
+  struct in_addr fSourceFilterAddr; // used for SSM
+  unsigned fBandwidth; // in kilobits-per-second, from b= line
+
+  double fPlayStartTime;
+  double fPlayEndTime;
+  char* fAbsStartTime;
+  char* fAbsEndTime;
+  unsigned short fVideoWidth, fVideoHeight;
+     // screen dimensions (set by an optional a=x-dimensions: <w>,<h> line)
+  unsigned fVideoFPS;
+     // frame rate (set by an optional "a=framerate: <fps>" or "a=x-framerate: <fps>" line)
+  unsigned fNumChannels;
+     // optionally set by "a=rtpmap:" lines for audio sessions.  Default: 1
+  float fScale; // set from a RTSP "Scale:" header
+  float fSpeed;
+  double fNPT_PTS_Offset; // set by "getNormalPlayTime()"; add this to a PTS to get NPT
+  HashTable* fAttributeTable; // for "a=fmtp:" attributes.  (Later an array by payload type #####)
+
+  // Fields set or used by initiate():
+  Groupsock* fRTPSocket; Groupsock* fRTCPSocket; // works even for unicast
+  RTPSource* fRTPSource; RTCPInstance* fRTCPInstance;
+  FramedSource* fReadSource;
+  Boolean fReceiveRawMP3ADUs, fReceiveRawJPEGFrames;
+
+  // Other fields:
+  char* fSessionId; // used by RTSP
+};
+
+#endif
diff --git a/liveMedia/include/MediaSink.hh b/liveMedia/include/MediaSink.hh
new file mode 100644
index 0000000..60720fd
--- /dev/null
+++ b/liveMedia/include/MediaSink.hh
@@ -0,0 +1,135 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Media Sinks
+// C++ header
+
+#ifndef _MEDIA_SINK_HH
+#define _MEDIA_SINK_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class MediaSink: public Medium {
+public:
+  static Boolean lookupByName(UsageEnvironment& env, char const* sinkName,
+			      MediaSink*& resultSink);
+
+  typedef void (afterPlayingFunc)(void* clientData);
+  Boolean startPlaying(MediaSource& source,
+		       afterPlayingFunc* afterFunc,
+		       void* afterClientData);
+  virtual void stopPlaying();
+
+  // Test for specific types of sink:
+  virtual Boolean isRTPSink() const;
+
+  FramedSource* source() const {return fSource;}
+
+protected:
+  MediaSink(UsageEnvironment& env); // abstract base class
+  virtual ~MediaSink();
+
+  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+      // called by startPlaying()
+  virtual Boolean continuePlaying() = 0;
+      // called by startPlaying()
+
+  static void onSourceClosure(void* clientData); // can be used in "getNextFrame()" calls
+  void onSourceClosure();
+      // should be called (on ourselves) by continuePlaying() when it
+      // discovers that the source we're playing from has closed.
+
+  FramedSource* fSource;
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isSink() const;
+
+private:
+  // The following fields are used when we're being played:
+  afterPlayingFunc* fAfterFunc;
+  void* fAfterClientData;
+};
+
+// A data structure that a sink may use for an output packet:
+class OutPacketBuffer {
+public:
+  OutPacketBuffer(unsigned preferredPacketSize, unsigned maxPacketSize,
+		  unsigned maxBufferSize = 0);
+      // if "maxBufferSize" is >0, use it - instead of "maxSize" to compute the buffer size
+  ~OutPacketBuffer();
+
+  static unsigned maxSize;
+  static void increaseMaxSizeTo(unsigned newMaxSize) { if (newMaxSize > OutPacketBuffer::maxSize) OutPacketBuffer::maxSize = newMaxSize; }
+
+  unsigned char* curPtr() const {return &fBuf[fPacketStart + fCurOffset];}
+  unsigned totalBytesAvailable() const {
+    return fLimit - (fPacketStart + fCurOffset);
+  }
+  unsigned totalBufferSize() const { return fLimit; }
+  unsigned char* packet() const {return &fBuf[fPacketStart];}
+  unsigned curPacketSize() const {return fCurOffset;}
+
+  void increment(unsigned numBytes) {fCurOffset += numBytes;}
+
+  void enqueue(unsigned char const* from, unsigned numBytes);
+  void enqueueWord(u_int32_t word);
+  void insert(unsigned char const* from, unsigned numBytes, unsigned toPosition);
+  void insertWord(u_int32_t word, unsigned toPosition);
+  void extract(unsigned char* to, unsigned numBytes, unsigned fromPosition);
+  u_int32_t extractWord(unsigned fromPosition);
+
+  void skipBytes(unsigned numBytes);
+
+  Boolean isPreferredSize() const {return fCurOffset >= fPreferred;}
+  Boolean wouldOverflow(unsigned numBytes) const {
+    return (fCurOffset+numBytes) > fMax;
+  }
+  unsigned numOverflowBytes(unsigned numBytes) const {
+    return (fCurOffset+numBytes) - fMax;
+  }
+  Boolean isTooBigForAPacket(unsigned numBytes) const {
+    return numBytes > fMax;
+  }
+
+  void setOverflowData(unsigned overflowDataOffset,
+		       unsigned overflowDataSize,
+		       struct timeval const& presentationTime,
+		       unsigned durationInMicroseconds);
+  unsigned overflowDataSize() const {return fOverflowDataSize;}
+  struct timeval overflowPresentationTime() const {return fOverflowPresentationTime;}
+  unsigned overflowDurationInMicroseconds() const {return fOverflowDurationInMicroseconds;}
+  Boolean haveOverflowData() const {return fOverflowDataSize > 0;}
+  void useOverflowData();
+
+  void adjustPacketStart(unsigned numBytes);
+  void resetPacketStart();
+  void resetOffset() { fCurOffset = 0; }
+  void resetOverflowData() { fOverflowDataOffset = fOverflowDataSize = 0; }
+
+private:
+  unsigned fPacketStart, fCurOffset, fPreferred, fMax, fLimit;
+  unsigned char* fBuf;
+
+  unsigned fOverflowDataOffset, fOverflowDataSize;
+  struct timeval fOverflowPresentationTime;
+  unsigned fOverflowDurationInMicroseconds;
+};
+
+#endif
diff --git a/liveMedia/include/MediaSource.hh b/liveMedia/include/MediaSource.hh
new file mode 100644
index 0000000..9bd4974
--- /dev/null
+++ b/liveMedia/include/MediaSource.hh
@@ -0,0 +1,59 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Media Sources
+// C++ header
+
+#ifndef _MEDIA_SOURCE_HH
+#define _MEDIA_SOURCE_HH
+
+#ifndef _MEDIA_HH
+#include "Media.hh"
+#endif
+
+class MediaSource: public Medium {
+public:
+  static Boolean lookupByName(UsageEnvironment& env, char const* sourceName,
+			      MediaSource*& resultSource);
+  virtual void getAttributes() const;
+      // attributes are returned in "env's" 'result message'
+
+  // The MIME type of this source:
+  virtual char const* MIMEtype() const;
+
+  // Test for specific types of source:
+  virtual Boolean isFramedSource() const;
+  virtual Boolean isRTPSource() const;
+  virtual Boolean isMPEG1or2VideoStreamFramer() const;
+  virtual Boolean isMPEG4VideoStreamFramer() const;
+  virtual Boolean isH264VideoStreamFramer() const;
+  virtual Boolean isH265VideoStreamFramer() const;
+  virtual Boolean isDVVideoStreamFramer() const;
+  virtual Boolean isJPEGVideoSource() const;
+  virtual Boolean isAMRAudioSource() const;
+  virtual Boolean isMPEG2TransportStreamMultiplexor() const;
+
+protected:
+  MediaSource(UsageEnvironment& env); // abstract base class
+  virtual ~MediaSource();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isSource() const;
+};
+
+#endif
diff --git a/liveMedia/include/MediaTranscodingTable.hh b/liveMedia/include/MediaTranscodingTable.hh
new file mode 100644
index 0000000..cea3710
--- /dev/null
+++ b/liveMedia/include/MediaTranscodingTable.hh
@@ -0,0 +1,66 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class that implements a database that can be accessed to create
+// "FramedFilter" (subclass) objects that transcode one codec into another.
+// The implementation of this class just returns NULL for each codec lookup;
+// To actually implement transcoding, you would subclass it.
+// C++ header
+
+#ifndef _MEDIA_TRANSCODING_TABLE_HH
+#define _MEDIA_TRANSCODING_TABLE_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+#ifndef _MEDIA_SESSION_HH
+#include "MediaSession.hh"
+#endif
+
+class MediaTranscodingTable: public Medium {
+public:
+  virtual FramedFilter*
+  lookupTranscoder(MediaSubsession& /*inputCodecDescription*/, // in
+		   char*& outputCodecName/* out; must be delete[]d later */) {
+    // Default implementation: Return NULL (indicating: no transcoding).
+    // You would reimplement this virtual function in a subclass to return a new 'transcoding'
+    // "FramedFilter" (subclass) object for each ("mediumName","codecName") that you wish to
+    // transcode (or return NULL for no transcoding).
+    // (Note that "inputCodecDescription" must have a non-NULL "readSource()"; this is used
+    //  as the input to the new "FramedFilter" (subclass) object.)
+    outputCodecName = NULL;
+    return NULL;
+  }
+
+  virtual Boolean weWillTranscode(char const* /*mediumName*/, char const* /*codecName*/) {
+    // Default implementation: Return False.
+    // You would reimplement this in a subclass - returning True for each
+    // <mediumName>/<codecName> for which you'll do transcoding.
+    // Note: Unlike "lookupTranscoder()", this function does not actually create any 'transcoding'
+    // filter objects.  (It may be called before "MediaSubsession::initiate()".)
+    return False;
+  }
+
+protected: // we are to be subclassed only
+  MediaTranscodingTable(UsageEnvironment& env)
+    : Medium(env) {
+  }
+  virtual ~MediaTranscodingTable() {
+  }
+};
+
+#endif
diff --git a/liveMedia/include/MultiFramedRTPSink.hh b/liveMedia/include/MultiFramedRTPSink.hh
new file mode 100644
index 0000000..5bfd5c8
--- /dev/null
+++ b/liveMedia/include/MultiFramedRTPSink.hh
@@ -0,0 +1,140 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for a common kind of payload format: Those which pack multiple,
+// complete codec frames (as many as possible) into each RTP packet.
+// C++ header
+
+#ifndef _MULTI_FRAMED_RTP_SINK_HH
+#define _MULTI_FRAMED_RTP_SINK_HH
+
+#ifndef _RTP_SINK_HH
+#include "RTPSink.hh"
+#endif
+
+class MultiFramedRTPSink: public RTPSink {
+public:
+  void setPacketSizes(unsigned preferredPacketSize, unsigned maxPacketSize);
+
+  typedef void (onSendErrorFunc)(void* clientData);
+  void setOnSendErrorFunc(onSendErrorFunc* onSendErrorFunc, void* onSendErrorFuncData) {
+    // Can be used to set a callback function to be called if there's an error sending RTP packets on our socket.
+    fOnSendErrorFunc = onSendErrorFunc;
+    fOnSendErrorData = onSendErrorFuncData;
+  }
+
+protected:
+  MultiFramedRTPSink(UsageEnvironment& env,
+		     Groupsock* rtpgs, unsigned char rtpPayloadType,
+		     unsigned rtpTimestampFrequency,
+		     char const* rtpPayloadFormatName,
+		     unsigned numChannels = 1);
+	// we're a virtual base class
+
+  virtual ~MultiFramedRTPSink();
+
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+				      unsigned char* frameStart,
+				      unsigned numBytesInFrame,
+				      struct timeval framePresentationTime,
+				      unsigned numRemainingBytes);
+      // perform any processing specific to the particular payload format
+  virtual Boolean allowFragmentationAfterStart() const;
+      // whether a frame can be fragmented if other frame(s) appear earlier
+      // in the packet (by default: False)
+  virtual Boolean allowOtherFramesAfterLastFragment() const;
+      // whether other frames can be packed into a packet following the
+      // final fragment of a previous, fragmented frame (by default: False)
+  virtual Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+						 unsigned numBytesInFrame) const;
+      // whether this frame can appear in position >1 in a pkt (default: True)
+  virtual unsigned specialHeaderSize() const;
+      // returns the size of any special header used (following the RTP header) (default: 0)
+  virtual unsigned frameSpecificHeaderSize() const;
+      // returns the size of any frame-specific header used (before each frame
+      // within the packet) (default: 0)
+  virtual unsigned computeOverflowForNewFrame(unsigned newFrameSize) const;
+      // returns the number of overflow bytes that would be produced by adding a new
+      // frame of size "newFrameSize" to the current RTP packet.
+      // (By default, this just calls "numOverflowBytes()", but subclasses can redefine
+      // this to (e.g.) impose a granularity upon RTP payload fragments.)
+
+  // Functions that might be called by doSpecialFrameHandling(), or other subclass virtual functions:
+  Boolean isFirstPacket() const { return fIsFirstPacket; }
+  Boolean isFirstFrameInPacket() const { return fNumFramesUsedSoFar == 0; }
+  unsigned curFragmentationOffset() const { return fCurFragmentationOffset; }
+  void setMarkerBit();
+  void setTimestamp(struct timeval framePresentationTime);
+  void setSpecialHeaderWord(unsigned word, /* 32 bits, in host order */
+			    unsigned wordPosition = 0);
+  void setSpecialHeaderBytes(unsigned char const* bytes, unsigned numBytes,
+			     unsigned bytePosition = 0);
+  void setFrameSpecificHeaderWord(unsigned word, /* 32 bits, in host order */
+				  unsigned wordPosition = 0);
+  void setFrameSpecificHeaderBytes(unsigned char const* bytes, unsigned numBytes,
+				   unsigned bytePosition = 0);
+  void setFramePadding(unsigned numPaddingBytes);
+  unsigned numFramesUsedSoFar() const { return fNumFramesUsedSoFar; }
+  unsigned ourMaxPacketSize() const { return fOurMaxPacketSize; }
+
+public: // redefined virtual functions:
+  virtual void stopPlaying();
+
+protected: // redefined virtual functions:
+  virtual Boolean continuePlaying();
+
+private:
+  void buildAndSendPacket(Boolean isFirstPacket);
+  void packFrame();
+  void sendPacketIfNecessary();
+  static void sendNext(void* firstArg);
+  friend void sendNext(void*);
+
+  static void afterGettingFrame(void* clientData,
+				unsigned numBytesRead, unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned numBytesRead, unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+  Boolean isTooBigForAPacket(unsigned numBytes) const;
+
+  static void ourHandleClosure(void* clientData);
+
+private:
+  OutPacketBuffer* fOutBuf;
+
+  Boolean fNoFramesLeft;
+  unsigned fNumFramesUsedSoFar;
+  unsigned fCurFragmentationOffset;
+  Boolean fPreviousFrameEndedFragmentation;
+
+  Boolean fIsFirstPacket;
+  struct timeval fNextSendTime;
+  unsigned fTimestampPosition;
+  unsigned fSpecialHeaderPosition;
+  unsigned fSpecialHeaderSize; // size in bytes of any special header used
+  unsigned fCurFrameSpecificHeaderPosition;
+  unsigned fCurFrameSpecificHeaderSize; // size in bytes of cur frame-specific header
+  unsigned fTotalFrameSpecificHeaderSizes; // size of all frame-specific hdrs in pkt
+  unsigned fOurMaxPacketSize;
+
+  onSendErrorFunc* fOnSendErrorFunc;
+  void* fOnSendErrorData;
+};
+
+#endif
diff --git a/liveMedia/include/MultiFramedRTPSource.hh b/liveMedia/include/MultiFramedRTPSource.hh
new file mode 100644
index 0000000..b950d70
--- /dev/null
+++ b/liveMedia/include/MultiFramedRTPSource.hh
@@ -0,0 +1,159 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP source for a common kind of payload format: Those which pack multiple,
+// complete codec frames (as many as possible) into each RTP packet.
+// C++ header
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#define _MULTI_FRAMED_RTP_SOURCE_HH
+
+#ifndef _RTP_SOURCE_HH
+#include "RTPSource.hh"
+#endif
+
+class BufferedPacket; // forward
+class BufferedPacketFactory; // forward
+
+class MultiFramedRTPSource: public RTPSource {
+protected:
+  MultiFramedRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		       unsigned char rtpPayloadFormat,
+		       unsigned rtpTimestampFrequency,
+		       BufferedPacketFactory* packetFactory = NULL);
+      // virtual base class
+  virtual ~MultiFramedRTPSource();
+
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+				       unsigned& resultSpecialHeaderSize);
+      // Subclasses redefine this to handle any special, payload format
+      // specific header that follows the RTP header.
+
+  virtual Boolean packetIsUsableInJitterCalculation(unsigned char* packet,
+						    unsigned packetSize);
+      // The default implementation returns True, but this can be redefined
+
+protected:
+  Boolean fCurrentPacketBeginsFrame;
+  Boolean fCurrentPacketCompletesFrame;
+
+protected:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+private:
+  // redefined virtual functions:
+  virtual void setPacketReorderingThresholdTime(unsigned uSeconds);
+
+private:
+  void reset();
+  void doGetNextFrame1();
+
+  static void networkReadHandler(MultiFramedRTPSource* source, int /*mask*/);
+  void networkReadHandler1();
+
+  Boolean fAreDoingNetworkReads;
+  BufferedPacket* fPacketReadInProgress;
+  Boolean fNeedDelivery;
+  Boolean fPacketLossInFragmentedFrame;
+  unsigned char* fSavedTo;
+  unsigned fSavedMaxSize;
+
+  // A buffer to (optionally) hold incoming pkts that have been reorderered
+  class ReorderingPacketBuffer* fReorderingBuffer;
+};
+
+
+// A 'packet data' class that's used to implement the above.
+// Note that this can be subclassed - if desired - to redefine
+// "nextEnclosedFrameParameters()".
+
+class BufferedPacket {
+public:
+  BufferedPacket();
+  virtual ~BufferedPacket();
+
+  Boolean hasUsableData() const { return fTail > fHead; }
+  unsigned useCount() const { return fUseCount; }
+
+  Boolean fillInData(RTPInterface& rtpInterface, struct sockaddr_in& fromAddress, Boolean& packetReadWasIncomplete);
+  void assignMiscParams(unsigned short rtpSeqNo, unsigned rtpTimestamp,
+			struct timeval presentationTime,
+			Boolean hasBeenSyncedUsingRTCP,
+			Boolean rtpMarkerBit, struct timeval timeReceived);
+  void skip(unsigned numBytes); // used to skip over an initial header
+  void removePadding(unsigned numBytes); // used to remove trailing bytes
+  void appendData(unsigned char* newData, unsigned numBytes);
+  void use(unsigned char* to, unsigned toSize,
+	   unsigned& bytesUsed, unsigned& bytesTruncated,
+	   unsigned short& rtpSeqNo, unsigned& rtpTimestamp,
+	   struct timeval& presentationTime,
+	   Boolean& hasBeenSyncedUsingRTCP, Boolean& rtpMarkerBit);
+
+  BufferedPacket*& nextPacket() { return fNextPacket; }
+
+  unsigned short rtpSeqNo() const { return fRTPSeqNo; }
+  struct timeval const& timeReceived() const { return fTimeReceived; }
+
+  unsigned char* data() const { return &fBuf[fHead]; }
+  unsigned dataSize() const { return fTail-fHead; }
+  Boolean rtpMarkerBit() const { return fRTPMarkerBit; }
+  Boolean& isFirstPacket() { return fIsFirstPacket; }
+  unsigned bytesAvailable() const { return fPacketSize - fTail; }
+
+protected:
+  virtual void reset();
+  virtual unsigned nextEnclosedFrameSize(unsigned char*& framePtr,
+					 unsigned dataSize);
+      // The above function has been deprecated.  Instead, new subclasses should use:
+  virtual void getNextEnclosedFrameParameters(unsigned char*& framePtr,
+					      unsigned dataSize,
+					      unsigned& frameSize,
+					      unsigned& frameDurationInMicroseconds);
+
+  unsigned fPacketSize;
+  unsigned char* fBuf;
+  unsigned fHead;
+  unsigned fTail;
+
+private:
+  BufferedPacket* fNextPacket; // used to link together packets
+
+  unsigned fUseCount;
+  unsigned short fRTPSeqNo;
+  unsigned fRTPTimestamp;
+  struct timeval fPresentationTime; // corresponding to "fRTPTimestamp"
+  Boolean fHasBeenSyncedUsingRTCP;
+  Boolean fRTPMarkerBit;
+  Boolean fIsFirstPacket;
+  struct timeval fTimeReceived;
+};
+
+// A 'factory' class for creating "BufferedPacket" objects.
+// If you want to subclass "BufferedPacket", then you'll also
+// want to subclass this, to redefine createNewPacket()
+
+class BufferedPacketFactory {
+public:
+  BufferedPacketFactory();
+  virtual ~BufferedPacketFactory();
+
+  virtual BufferedPacket* createNewPacket(MultiFramedRTPSource* ourSource);
+};
+
+#endif
diff --git a/liveMedia/include/OggFile.hh b/liveMedia/include/OggFile.hh
new file mode 100644
index 0000000..dfb826e
--- /dev/null
+++ b/liveMedia/include/OggFile.hh
@@ -0,0 +1,177 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A class that encapsulates an Ogg file
+// C++ header
+
+#ifndef _OGG_FILE_HH
+#define _OGG_FILE_HH
+
+#ifndef _RTP_SINK_HH
+#include "RTPSink.hh"
+#endif
+#ifndef _HASH_TABLE_HH
+#include "HashTable.hh"
+#endif
+
+class OggTrack; // forward
+class OggDemux; // forward
+
+class OggFile: public Medium {
+public:
+  typedef void (onCreationFunc)(OggFile* newFile, void* clientData);
+  static void createNew(UsageEnvironment& env, char const* fileName,
+			onCreationFunc* onCreation, void* onCreationClientData);
+      // Note: Unlike most "createNew()" functions, this one doesn't return a new object
+      // immediately.  Instead, because this class requires file reading (to parse the
+      // Ogg track headers) before a new object can be initialized, the creation of a new object
+      // is signalled by calling - from the event loop - an 'onCreationFunc' that is passed as
+      // a parameter to "createNew()".
+
+  OggTrack* lookup(u_int32_t trackNumber);
+
+  OggDemux* newDemux();
+      // Creates a demultiplexor for extracting tracks from this file.
+      // (Separate clients will typically have separate demultiplexors.)
+
+  char const* fileName() const { return fFileName; }
+  unsigned numTracks() const;
+
+  FramedSource*
+  createSourceForStreaming(FramedSource* baseSource, u_int32_t trackNumber,
+                           unsigned& estBitrate, unsigned& numFiltersInFrontOfTrack);
+    // Takes a data source (which must be a demultiplexed track from this file) and returns
+    // a (possibly modified) data source that can be used for streaming.
+
+  RTPSink* createRTPSinkForTrackNumber(u_int32_t trackNumber, Groupsock* rtpGroupsock,
+                                       unsigned char rtpPayloadTypeIfDynamic);
+    // Creates a "RTPSink" object that would be appropriate for streaming the specified track,
+    // or NULL if no appropriate "RTPSink" exists
+
+  class OggTrackTable& trackTable() { return *fTrackTable; }
+
+private:
+  OggFile(UsageEnvironment& env, char const* fileName, onCreationFunc* onCreation, void* onCreationClientData);
+    // called only by createNew()
+  virtual ~OggFile();
+
+  static void handleEndOfBosPageParsing(void* clientData);
+  void handleEndOfBosPageParsing();
+
+  void addTrack(OggTrack* newTrack);
+  void removeDemux(OggDemux* demux);
+
+private:
+  friend class OggFileParser;
+  friend class OggDemux;
+  char const* fFileName;
+  onCreationFunc* fOnCreation;
+  void* fOnCreationClientData;
+
+  class OggTrackTable* fTrackTable;
+  HashTable* fDemuxesTable;
+  class OggFileParser* fParserForInitialization;
+};
+
+class OggTrack {
+public:
+  OggTrack();
+  virtual ~OggTrack();
+
+  // track parameters
+  u_int32_t trackNumber; // bitstream serial number
+  char const* mimeType; // NULL if not known
+
+  unsigned samplingFrequency, numChannels; // for audio tracks
+  unsigned estBitrate; // estimate, in kbps (for RTCP)
+
+  // Special headers for Vorbis audio, Theora video, and Opus audio tracks:
+  struct _vtoHdrs {
+    u_int8_t* header[3]; // "identification", "comment", "setup"
+    unsigned headerSize[3];
+
+    // Fields specific to Vorbis audio:
+    unsigned blocksize[2]; // samples per frame (packet)
+    unsigned uSecsPerPacket[2]; // computed as (blocksize[i]*1000000)/samplingFrequency
+    unsigned vorbis_mode_count;
+    unsigned ilog_vorbis_mode_count_minus_1;
+    u_int8_t* vorbis_mode_blockflag;
+        // an array (of size "vorbis_mode_count") of indexes into the (2-entry) "blocksize" array
+
+    // Fields specific to Theora video:
+    u_int8_t KFGSHIFT;
+    unsigned uSecsPerFrame;
+
+  } vtoHdrs;
+
+  Boolean weNeedHeaders() const {
+    return
+      vtoHdrs.header[0] == NULL ||
+      vtoHdrs.header[1] == NULL ||
+      (vtoHdrs.header[2] == NULL && strcmp(mimeType, "audio/OPUS") != 0);
+    }
+};
+
+class OggTrackTableIterator {
+public:
+  OggTrackTableIterator(class OggTrackTable& ourTable);
+  virtual ~OggTrackTableIterator();
+
+  OggTrack* next();
+
+private:
+  HashTable::Iterator* fIter;
+};
+
+class OggDemux: public Medium {
+public:
+  FramedSource* newDemuxedTrack(u_int32_t& resultTrackNumber);
+    // Returns a new stream ("FramedSource" subclass) that represents the next media track
+    // from the file.  This function returns NULL when no more media tracks exist.
+
+  FramedSource* newDemuxedTrackByTrackNumber(unsigned trackNumber);
+      // As above, but creates a new stream for a specific track number within the Matroska file.
+      // (You should not call this function more than once with the same track number.)
+
+      // Note: We assume that:
+      // - Every track created by "newDemuxedTrack()" is later read
+      // - All calls to "newDemuxedTrack()" are made before any track is read
+
+protected:
+  friend class OggFile;
+  friend class OggFileParser;
+  class OggDemuxedTrack* lookupDemuxedTrack(u_int32_t trackNumber);
+
+  OggDemux(OggFile& ourFile);
+  virtual ~OggDemux();
+
+private:
+  friend class OggDemuxedTrack;
+  void removeTrack(u_int32_t trackNumber);
+  void continueReading(); // called by a demuxed track to tell us that it has a pending read ("doGetNextFrame()")
+
+  static void handleEndOfFile(void* clientData);
+  void handleEndOfFile();
+
+private:
+  OggFile& fOurFile;
+  class OggFileParser* fOurParser;
+  HashTable* fDemuxedTracksTable;
+  OggTrackTableIterator* fIter;
+};
+
+#endif
diff --git a/liveMedia/include/OggFileServerDemux.hh b/liveMedia/include/OggFileServerDemux.hh
new file mode 100644
index 0000000..77b5dfc
--- /dev/null
+++ b/liveMedia/include/OggFileServerDemux.hh
@@ -0,0 +1,81 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A server demultiplexor for an Ogg file
+// C++ header
+
+#ifndef _OGG_FILE_SERVER_DEMUX_HH
+#define _OGG_FILE_SERVER_DEMUX_HH
+
+#ifndef _SERVER_MEDIA_SESSION_HH
+#include "ServerMediaSession.hh"
+#endif
+
+#ifndef _OGG_FILE_HH
+#include "OggFile.hh"
+#endif
+
+class OggFileServerDemux: public Medium {
+public:
+  typedef void (onCreationFunc)(OggFileServerDemux* newDemux, void* clientData);
+  static void createNew(UsageEnvironment& env, char const* fileName,
+			onCreationFunc* onCreation, void* onCreationClientData);
+    // Note: Unlike most "createNew()" functions, this one doesn't return a new object immediately.  Instead, because this class
+    // requires file reading (to parse the Ogg 'Track' headers) before a new object can be initialized, the creation of a new
+    // object is signalled by calling - from the event loop - an 'onCreationFunc' that is passed as a parameter to "createNew()". 
+
+  ServerMediaSubsession* newServerMediaSubsession();
+  ServerMediaSubsession* newServerMediaSubsession(u_int32_t& resultTrackNumber);
+    // Returns a new "ServerMediaSubsession" object that represents the next media track
+    // from the file.  This function returns NULL when no more media tracks exist.
+
+  ServerMediaSubsession* newServerMediaSubsessionByTrackNumber(u_int32_t trackNumber);
+  // As above, but creates a new "ServerMediaSubsession" object for a specific track number
+  // within the Ogg file.
+  // (You should not call this function more than once with the same track number.)
+
+  // The following public: member functions are called only by the "ServerMediaSubsession" objects:
+
+  OggFile* ourOggFile() { return fOurOggFile; }
+  char const* fileName() const { return fFileName; }
+
+  FramedSource* newDemuxedTrack(unsigned clientSessionId, u_int32_t trackNumber);
+    // Used by the "ServerMediaSubsession" objects to implement their "createNewStreamSource()" virtual function.
+
+private:
+  OggFileServerDemux(UsageEnvironment& env, char const* fileName,
+		     onCreationFunc* onCreation, void* onCreationClientData);
+      // called only by createNew()
+  virtual ~OggFileServerDemux();
+
+  static void onOggFileCreation(OggFile* newFile, void* clientData);
+  void onOggFileCreation(OggFile* newFile);
+private:
+  char const* fFileName; 
+  onCreationFunc* fOnCreation;
+  void* fOnCreationClientData;
+  OggFile* fOurOggFile;
+
+  // Used to implement "newServerMediaSubsession()":
+  OggTrackTableIterator* fIter;
+
+  // Used to set up demuxing, to implement "newDemuxedTrack()":
+  unsigned fLastClientSessionId;
+  OggDemux* fLastCreatedDemux;
+};
+
+#endif
diff --git a/liveMedia/include/OggFileSink.hh b/liveMedia/include/OggFileSink.hh
new file mode 100644
index 0000000..f690fa3
--- /dev/null
+++ b/liveMedia/include/OggFileSink.hh
@@ -0,0 +1,79 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// 'Ogg' File Sink (recording a single media track only)
+// C++ header
+
+#ifndef _OGG_FILE_SINK_HH
+#define _OGG_FILE_SINK_HH
+
+#ifndef _FILE_SINK_HH
+#include "FileSink.hh"
+#endif
+
+class OggFileSink: public FileSink {
+public:
+  static OggFileSink* createNew(UsageEnvironment& env, char const* fileName,
+				unsigned samplingFrequency = 0, // used for granule_position
+				char const* configStr = NULL,
+      // "configStr" is an optional 'SDP format' string (Base64-encoded)
+      // representing 'packed configuration headers' ("identification", "comment", "setup")
+      // to prepend to the output.  (For 'Vorbis" audio and 'Theora' video.)
+				unsigned bufferSize = 100000,
+				Boolean oneFilePerFrame = False);
+      // See "FileSink.hh" for a description of these parameters.
+
+protected:
+  OggFileSink(UsageEnvironment& env, FILE* fid, unsigned samplingFrequency, char const* configStr,
+	      unsigned bufferSize, char const* perFrameFileNamePrefix);
+      // called only by createNew()
+  virtual ~OggFileSink();
+
+protected: // redefined virtual functions:
+  virtual Boolean continuePlaying();
+  virtual void addData(unsigned char const* data, unsigned dataSize,
+		       struct timeval presentationTime);
+  virtual void afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes,
+				 struct timeval presentationTime);
+
+private:
+  static void ourOnSourceClosure(void* clientData);
+  void ourOnSourceClosure();
+
+private:
+  unsigned fSamplingFrequency;
+  char const* fConfigStr;
+  Boolean fHaveWrittenFirstFrame, fHaveSeenEOF;
+  struct timeval fFirstPresentationTime;
+  int64_t fGranulePosition;
+  int64_t fGranulePositionAdjustment; // used to ensure that "fGranulePosition" stays monotonic
+  u_int32_t fPageSequenceNumber;
+  u_int8_t fPageHeaderBytes[27];
+      // the header of each Ogg page, through the "number_page_segments" byte
+
+  // Special fields used for Theora video:
+  Boolean fIsTheora;
+  u_int64_t fGranuleIncrementPerFrame; // == 1 << KFGSHIFT
+
+  // Because the last Ogg page before EOF needs to have a special 'eos' bit set in the header,
+  // we need to defer the writing of each incoming frame.  To do this, we maintain a 2nd buffer:
+  unsigned char* fAltBuffer;
+  unsigned fAltFrameSize, fAltNumTruncatedBytes;
+  struct timeval fAltPresentationTime;
+};
+
+#endif
diff --git a/liveMedia/include/OnDemandServerMediaSubsession.hh b/liveMedia/include/OnDemandServerMediaSubsession.hh
new file mode 100644
index 0000000..2d81d46
--- /dev/null
+++ b/liveMedia/include/OnDemandServerMediaSubsession.hh
@@ -0,0 +1,227 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand.
+// C++ header
+
+#ifndef _ON_DEMAND_SERVER_MEDIA_SUBSESSION_HH
+#define _ON_DEMAND_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _SERVER_MEDIA_SESSION_HH
+#include "ServerMediaSession.hh"
+#endif
+#ifndef _RTP_SINK_HH
+#include "RTPSink.hh"
+#endif
+#ifndef _BASIC_UDP_SINK_HH
+#include "BasicUDPSink.hh"
+#endif
+#ifndef _RTCP_HH
+#include "RTCP.hh"
+#endif
+
+class OnDemandServerMediaSubsession: public ServerMediaSubsession {
+protected: // we're a virtual base class
+  OnDemandServerMediaSubsession(UsageEnvironment& env, Boolean reuseFirstSource,
+				portNumBits initialPortNum = 6970,
+				Boolean multiplexRTCPWithRTP = False);
+  virtual ~OnDemandServerMediaSubsession();
+
+protected: // redefined virtual functions
+  virtual char const* sdpLines();
+  virtual void getStreamParameters(unsigned clientSessionId,
+				   netAddressBits clientAddress,
+                                   Port const& clientRTPPort,
+                                   Port const& clientRTCPPort,
+				   int tcpSocketNum,
+                                   unsigned char rtpChannelId,
+                                   unsigned char rtcpChannelId,
+                                   netAddressBits& destinationAddress,
+				   u_int8_t& destinationTTL,
+                                   Boolean& isMulticast,
+                                   Port& serverRTPPort,
+                                   Port& serverRTCPPort,
+                                   void*& streamToken);
+  virtual void startStream(unsigned clientSessionId, void* streamToken,
+			   TaskFunc* rtcpRRHandler,
+			   void* rtcpRRHandlerClientData,
+			   unsigned short& rtpSeqNum,
+                           unsigned& rtpTimestamp,
+			   ServerRequestAlternativeByteHandler* serverRequestAlternativeByteHandler,
+                           void* serverRequestAlternativeByteHandlerClientData);
+  virtual void pauseStream(unsigned clientSessionId, void* streamToken);
+  virtual void seekStream(unsigned clientSessionId, void* streamToken, double& seekNPT, double streamDuration, u_int64_t& numBytes);
+  virtual void seekStream(unsigned clientSessionId, void* streamToken, char*& absStart, char*& absEnd);
+  virtual void nullSeekStream(unsigned clientSessionId, void* streamToken,
+			      double streamEndTime, u_int64_t& numBytes);
+  virtual void setStreamScale(unsigned clientSessionId, void* streamToken, float scale);
+  virtual float getCurrentNPT(void* streamToken);
+  virtual FramedSource* getStreamSource(void* streamToken);
+  virtual void getRTPSinkandRTCP(void* streamToken,
+				 RTPSink const*& rtpSink, RTCPInstance const*& rtcp);
+  virtual void deleteStream(unsigned clientSessionId, void*& streamToken);
+
+protected: // new virtual functions, possibly redefined by subclasses
+  virtual char const* getAuxSDPLine(RTPSink* rtpSink,
+				    FramedSource* inputSource);
+  virtual void seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes);
+    // This routine is used to seek by relative (i.e., NPT) time.
+    // "streamDuration", if >0.0, specifies how much data to stream, past "seekNPT".  (If <=0.0, all remaining data is streamed.)
+    // "numBytes" returns the size (in bytes) of the data to be streamed, or 0 if unknown or unlimited.
+  virtual void seekStreamSource(FramedSource* inputSource, char*& absStart, char*& absEnd);
+    // This routine is used to seek by 'absolute' time.
+    // "absStart" should be a string of the form "YYYYMMDDTHHMMSSZ" or "YYYYMMDDTHHMMSS.<frac>Z".
+    // "absEnd" should be either NULL (for no end time), or a string of the same form as "absStart".
+    // These strings may be modified in-place, or can be reassigned to a newly-allocated value (after delete[]ing the original).
+  virtual void setStreamSourceScale(FramedSource* inputSource, float scale);
+  virtual void setStreamSourceDuration(FramedSource* inputSource, double streamDuration, u_int64_t& numBytes);
+  virtual void closeStreamSource(FramedSource* inputSource);
+
+protected: // new virtual functions, defined by all subclasses
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate) = 0;
+      // "estBitrate" is the stream's estimated bitrate, in kbps
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+				    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource) = 0;
+
+protected: // new virtual functions, may be redefined by a subclass:
+  virtual Groupsock* createGroupsock(struct in_addr const& addr, Port port);
+  virtual RTCPInstance* createRTCP(Groupsock* RTCPgs, unsigned totSessionBW, /* in kbps */
+				   unsigned char const* cname, RTPSink* sink);
+
+public:
+  void multiplexRTCPWithRTP() { fMultiplexRTCPWithRTP = True; }
+    // An alternative to passing the "multiplexRTCPWithRTP" parameter as True in the constructor
+
+  void setRTCPAppPacketHandler(RTCPAppHandlerFunc* handler, void* clientData);
+    // Sets a handler to be called if a RTCP "APP" packet arrives from any future client.
+    // (Any current clients are not affected; any "APP" packets from them will continue to be
+    // handled by whatever handler existed when the client sent its first RTSP "PLAY" command.)
+    // (Call with (NULL, NULL) to remove an existing handler - for future clients only)
+
+  void sendRTCPAppPacket(u_int8_t subtype, char const* name,
+			 u_int8_t* appDependentData, unsigned appDependentDataSize);
+    // Sends a custom RTCP "APP" packet to the most recent client (if "reuseFirstSource" was False),
+    // or to all current clients (if "reuseFirstSource" was True).
+    // The parameters correspond to their
+    // respective fields as described in the RTP/RTCP definition (RFC 3550).
+    // Note that only the low-order 5 bits of "subtype" are used, and only the first 4 bytes
+    // of "name" are used.  (If "name" has fewer than 4 bytes, or is NULL,
+    // then the remaining bytes are '\0'.)
+
+protected:
+  void setSDPLinesFromRTPSink(RTPSink* rtpSink, FramedSource* inputSource,
+			      unsigned estBitrate);
+      // used to implement "sdpLines()"
+
+protected:
+  char* fSDPLines;
+  HashTable* fDestinationsHashTable; // indexed by client session id
+
+private:
+  Boolean fReuseFirstSource;
+  portNumBits fInitialPortNum;
+  Boolean fMultiplexRTCPWithRTP;
+  void* fLastStreamToken;
+  char fCNAME[100]; // for RTCP
+  RTCPAppHandlerFunc* fAppHandlerTask;
+  void* fAppHandlerClientData;
+  friend class StreamState;
+};
+
+
+// A class that represents the state of an ongoing stream.  This is used only internally, in the implementation of
+// "OnDemandServerMediaSubsession", but we expose the definition here, in case subclasses of "OnDemandServerMediaSubsession"
+// want to access it.
+
+class Destinations {
+public:
+  Destinations(struct in_addr const& destAddr,
+               Port const& rtpDestPort,
+               Port const& rtcpDestPort)
+    : isTCP(False), addr(destAddr), rtpPort(rtpDestPort), rtcpPort(rtcpDestPort) {
+  }
+  Destinations(int tcpSockNum, unsigned char rtpChanId, unsigned char rtcpChanId)
+    : isTCP(True), rtpPort(0) /*dummy*/, rtcpPort(0) /*dummy*/,
+      tcpSocketNum(tcpSockNum), rtpChannelId(rtpChanId), rtcpChannelId(rtcpChanId) {
+  }
+
+public:
+  Boolean isTCP;
+  struct in_addr addr;
+  Port rtpPort;
+  Port rtcpPort;
+  int tcpSocketNum;
+  unsigned char rtpChannelId, rtcpChannelId;
+};
+
+class StreamState {
+public:
+  StreamState(OnDemandServerMediaSubsession& master,
+              Port const& serverRTPPort, Port const& serverRTCPPort,
+	      RTPSink* rtpSink, BasicUDPSink* udpSink,
+	      unsigned totalBW, FramedSource* mediaSource,
+	      Groupsock* rtpGS, Groupsock* rtcpGS);
+  virtual ~StreamState();
+
+  void startPlaying(Destinations* destinations, unsigned clientSessionId,
+		    TaskFunc* rtcpRRHandler, void* rtcpRRHandlerClientData,
+		    ServerRequestAlternativeByteHandler* serverRequestAlternativeByteHandler,
+                    void* serverRequestAlternativeByteHandlerClientData);
+  void pause();
+  void sendRTCPAppPacket(u_int8_t subtype, char const* name,
+			 u_int8_t* appDependentData, unsigned appDependentDataSize);
+  void endPlaying(Destinations* destinations, unsigned clientSessionId);
+  void reclaim();
+
+  unsigned& referenceCount() { return fReferenceCount; }
+
+  Port const& serverRTPPort() const { return fServerRTPPort; }
+  Port const& serverRTCPPort() const { return fServerRTCPPort; }
+
+  RTPSink* rtpSink() const { return fRTPSink; }
+  RTCPInstance* rtcpInstance() const { return fRTCPInstance; }
+
+  float streamDuration() const { return fStreamDuration; }
+
+  FramedSource* mediaSource() const { return fMediaSource; }
+  float& startNPT() { return fStartNPT; }
+
+private:
+  OnDemandServerMediaSubsession& fMaster;
+  Boolean fAreCurrentlyPlaying;
+  unsigned fReferenceCount;
+
+  Port fServerRTPPort, fServerRTCPPort;
+
+  RTPSink* fRTPSink;
+  BasicUDPSink* fUDPSink;
+
+  float fStreamDuration;
+  unsigned fTotalBW;
+  RTCPInstance* fRTCPInstance;
+
+  FramedSource* fMediaSource;
+  float fStartNPT; // initial 'normal play time'; reset after each seek
+
+  Groupsock* fRTPgs;
+  Groupsock* fRTCPgs;
+};
+
+#endif
diff --git a/liveMedia/include/OutputFile.hh b/liveMedia/include/OutputFile.hh
new file mode 100644
index 0000000..b104204
--- /dev/null
+++ b/liveMedia/include/OutputFile.hh
@@ -0,0 +1,31 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Common routines for opening/closing named output files
+// C++ header
+
+#ifndef _OUTPUT_FILE_HH
+#define _OUTPUT_FILE_HH
+
+#include <UsageEnvironment.hh>
+#include <stdio.h>
+
+FILE* OpenOutputFile(UsageEnvironment& env, char const* fileName);
+
+void CloseOutputFile(FILE* fid);
+
+#endif
diff --git a/liveMedia/include/PassiveServerMediaSubsession.hh b/liveMedia/include/PassiveServerMediaSubsession.hh
new file mode 100644
index 0000000..1f56863
--- /dev/null
+++ b/liveMedia/include/PassiveServerMediaSubsession.hh
@@ -0,0 +1,82 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that represents an existing
+// 'RTPSink', rather than one that creates new 'RTPSink's on demand.
+// C++ header
+
+#ifndef _PASSIVE_SERVER_MEDIA_SUBSESSION_HH
+#define _PASSIVE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _SERVER_MEDIA_SESSION_HH
+#include "ServerMediaSession.hh"
+#endif
+
+#ifndef _RTP_SINK_HH
+#include "RTPSink.hh"
+#endif
+#ifndef _RTCP_HH
+#include "RTCP.hh"
+#endif
+
+class PassiveServerMediaSubsession: public ServerMediaSubsession {
+public:
+  static PassiveServerMediaSubsession* createNew(RTPSink& rtpSink,
+						 RTCPInstance* rtcpInstance = NULL);
+
+protected:
+  PassiveServerMediaSubsession(RTPSink& rtpSink, RTCPInstance* rtcpInstance);
+      // called only by createNew();
+  virtual ~PassiveServerMediaSubsession();
+
+  virtual Boolean rtcpIsMuxed();
+
+protected: // redefined virtual functions
+  virtual char const* sdpLines();
+  virtual void getStreamParameters(unsigned clientSessionId,
+				   netAddressBits clientAddress,
+                                   Port const& clientRTPPort,
+                                   Port const& clientRTCPPort,
+				   int tcpSocketNum,
+                                   unsigned char rtpChannelId,
+                                   unsigned char rtcpChannelId,
+                                   netAddressBits& destinationAddress,
+				   u_int8_t& destinationTTL,
+                                   Boolean& isMulticast,
+                                   Port& serverRTPPort,
+                                   Port& serverRTCPPort,
+                                   void*& streamToken);
+  virtual void startStream(unsigned clientSessionId, void* streamToken,
+			   TaskFunc* rtcpRRHandler,
+			   void* rtcpRRHandlerClientData,
+                           unsigned short& rtpSeqNum,
+                           unsigned& rtpTimestamp,
+			   ServerRequestAlternativeByteHandler* serverRequestAlternativeByteHandler,
+                           void* serverRequestAlternativeByteHandlerClientData);
+  virtual float getCurrentNPT(void* streamToken);
+  virtual void getRTPSinkandRTCP(void* streamToken,
+				 RTPSink const*& rtpSink, RTCPInstance const*& rtcp);
+  virtual void deleteStream(unsigned clientSessionId, void*& streamToken);
+
+protected:
+  char* fSDPLines;
+  RTPSink& fRTPSink;
+  RTCPInstance* fRTCPInstance;
+  HashTable* fClientRTCPSourceRecords; // indexed by client session id; used to implement RTCP "RR" handling
+};
+
+#endif
diff --git a/liveMedia/include/ProxyServerMediaSession.hh b/liveMedia/include/ProxyServerMediaSession.hh
new file mode 100644
index 0000000..ea7b4f7
--- /dev/null
+++ b/liveMedia/include/ProxyServerMediaSession.hh
@@ -0,0 +1,238 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A subclass of "ServerMediaSession" that can be used to create a (unicast) RTSP servers that acts as a 'proxy' for
+// another (unicast or multicast) RTSP/RTP stream.
+// C++ header
+
+#ifndef _PROXY_SERVER_MEDIA_SESSION_HH
+#define _PROXY_SERVER_MEDIA_SESSION_HH
+
+#ifndef _SERVER_MEDIA_SESSION_HH
+#include "ServerMediaSession.hh"
+#endif
+#ifndef _MEDIA_SESSION_HH
+#include "MediaSession.hh"
+#endif
+#ifndef _RTSP_CLIENT_HH
+#include "RTSPClient.hh"
+#endif
+#ifndef _MEDIA_TRANSCODING_TABLE_HH
+#include "MediaTranscodingTable.hh"
+#endif
+
+// A subclass of "RTSPClient", used to refer to the particular "ProxyServerMediaSession" object being used.
+// It is used only within the implementation of "ProxyServerMediaSession", but is defined here, in case developers wish to
+// subclass it.
+
+class ProxyRTSPClient: public RTSPClient {
+public:
+  ProxyRTSPClient(class ProxyServerMediaSession& ourServerMediaSession, char const* rtspURL,
+                  char const* username, char const* password,
+                  portNumBits tunnelOverHTTPPortNum, int verbosityLevel, int socketNumToServer);
+  virtual ~ProxyRTSPClient();
+
+  void continueAfterDESCRIBE(char const* sdpDescription);
+  void continueAfterLivenessCommand(int resultCode, Boolean serverSupportsGetParameter);
+  void continueAfterSETUP(int resultCode);
+  void continueAfterPLAY(int resultCode);
+  void scheduleReset();
+
+private:
+  void reset();
+  int connectToServer(int socketNum, portNumBits remotePortNum);
+
+  Authenticator* auth() { return fOurAuthenticator; }
+
+  void scheduleLivenessCommand();
+  static void sendLivenessCommand(void* clientData);
+  void doReset();
+  static void doReset(void* clientData);
+
+  void scheduleDESCRIBECommand();
+  static void sendDESCRIBE(void* clientData);
+  void sendDESCRIBE();
+
+  static void subsessionTimeout(void* clientData);
+  void handleSubsessionTimeout();
+
+private:
+  friend class ProxyServerMediaSession;
+  friend class ProxyServerMediaSubsession;
+  ProxyServerMediaSession& fOurServerMediaSession;
+  char* fOurURL;
+  Authenticator* fOurAuthenticator;
+  Boolean fStreamRTPOverTCP;
+  class ProxyServerMediaSubsession *fSetupQueueHead, *fSetupQueueTail;
+  unsigned fNumSetupsDone;
+  unsigned fNextDESCRIBEDelay; // in seconds
+  Boolean fServerSupportsGetParameter, fLastCommandWasPLAY, fDoneDESCRIBE;
+  TaskToken fLivenessCommandTask, fDESCRIBECommandTask, fSubsessionTimerTask, fResetTask;
+};
+
+
+typedef ProxyRTSPClient*
+createNewProxyRTSPClientFunc(ProxyServerMediaSession& ourServerMediaSession,
+			     char const* rtspURL,
+			     char const* username, char const* password,
+			     portNumBits tunnelOverHTTPPortNum, int verbosityLevel,
+			     int socketNumToServer);
+ProxyRTSPClient*
+defaultCreateNewProxyRTSPClientFunc(ProxyServerMediaSession& ourServerMediaSession,
+				    char const* rtspURL,
+				    char const* username, char const* password,
+				    portNumBits tunnelOverHTTPPortNum, int verbosityLevel,
+				    int socketNumToServer);
+
+class ProxyServerMediaSession: public ServerMediaSession {
+public:
+  static ProxyServerMediaSession* createNew(UsageEnvironment& env,
+					    GenericMediaServer* ourMediaServer, // Note: We can be used by just one server
+					    char const* inputStreamURL, // the "rtsp://" URL of the stream we'll be proxying
+					    char const* streamName = NULL,
+					    char const* username = NULL, char const* password = NULL,
+					    portNumBits tunnelOverHTTPPortNum = 0,
+					        // for streaming the *proxied* (i.e., back-end) stream
+					    int verbosityLevel = 0,
+					    int socketNumToServer = -1,
+					    MediaTranscodingTable* transcodingTable = NULL);
+      // Hack: "tunnelOverHTTPPortNum" == 0xFFFF (i.e., all-ones) means: Stream RTP/RTCP-over-TCP, but *not* using HTTP
+      // "verbosityLevel" == 1 means display basic proxy setup info; "verbosityLevel" == 2 means display RTSP client protocol also.
+      // If "socketNumToServer" is >= 0, then it is the socket number of an already-existing TCP connection to the server.
+      //      (In this case, "inputStreamURL" must point to the socket's endpoint, so that it can be accessed via the socket.)
+
+  virtual ~ProxyServerMediaSession();
+
+  char const* url() const;
+
+  char describeCompletedFlag;
+    // initialized to 0; set to 1 when the back-end "DESCRIBE" completes.
+    // (This can be used as a 'watch variable' in "doEventLoop()".)
+  Boolean describeCompletedSuccessfully() const { return fClientMediaSession != NULL; }
+    // This can be used - along with "describeCompletdFlag" - to check whether the back-end "DESCRIBE" completed *successfully*.
+
+protected:
+  ProxyServerMediaSession(UsageEnvironment& env, GenericMediaServer* ourMediaServer,
+			  char const* inputStreamURL, char const* streamName,
+			  char const* username, char const* password,
+			  portNumBits tunnelOverHTTPPortNum, int verbosityLevel,
+			  int socketNumToServer,
+			  MediaTranscodingTable* transcodingTable,
+			  createNewProxyRTSPClientFunc* ourCreateNewProxyRTSPClientFunc
+			  = defaultCreateNewProxyRTSPClientFunc,
+			  portNumBits initialPortNum = 6970,
+			  Boolean multiplexRTCPWithRTP = False);
+
+  // If you subclass "ProxyRTSPClient", then you will also need to define your own function
+  // - with signature "createNewProxyRTSPClientFunc" (see above) - that creates a new object
+  // of this subclass.  You should also subclass "ProxyServerMediaSession" and, in your
+  // subclass's constructor, initialize the parent class (i.e., "ProxyServerMediaSession")
+  // constructor by passing your new function as the "ourCreateNewProxyRTSPClientFunc"
+  // parameter.
+
+  // Subclasses may redefine the following functions, if they want "ProxyServerSubsession"s
+  // to create subclassed "Groupsock" and/or "RTCPInstance" objects:
+  virtual Groupsock* createGroupsock(struct in_addr const& addr, Port port);
+  virtual RTCPInstance* createRTCP(Groupsock* RTCPgs, unsigned totSessionBW, /* in kbps */
+				   unsigned char const* cname, RTPSink* sink);
+
+  virtual Boolean allowProxyingForSubsession(MediaSubsession const& mss);
+  // By default, this function always returns True.  However, a subclass may redefine this
+  // if it wishes to restrict which subsessions of a stream get proxied - e.g., if it wishes
+  // to proxy only video tracks, but not audio (or other) tracks.
+
+protected:
+  GenericMediaServer* fOurMediaServer;
+  ProxyRTSPClient* fProxyRTSPClient;
+  MediaSession* fClientMediaSession;
+
+private:
+  friend class ProxyRTSPClient;
+  friend class ProxyServerMediaSubsession;
+  void continueAfterDESCRIBE(char const* sdpDescription);
+  void resetDESCRIBEState(); // undoes what was done by "contineAfterDESCRIBE()"
+
+private:
+  int fVerbosityLevel;
+  class PresentationTimeSessionNormalizer* fPresentationTimeSessionNormalizer;
+  createNewProxyRTSPClientFunc* fCreateNewProxyRTSPClientFunc;
+  MediaTranscodingTable* fTranscodingTable;
+  portNumBits fInitialPortNum;
+  Boolean fMultiplexRTCPWithRTP;
+};
+
+
+////////// PresentationTimeSessionNormalizer and PresentationTimeSubsessionNormalizer definitions //////////
+
+// The following two classes are used by proxies to convert incoming streams' presentation times into wall-clock-aligned
+// presentation times that are suitable for our "RTPSink"s (for the corresponding outgoing streams).
+// (For multi-subsession (i.e., audio+video) sessions, the outgoing streams' presentation times retain the same relative
+//  separation as those of the incoming streams.)
+
+class PresentationTimeSubsessionNormalizer: public FramedFilter {
+public:
+  void setRTPSink(RTPSink* rtpSink) { fRTPSink = rtpSink; }
+
+private:
+  friend class PresentationTimeSessionNormalizer;
+  PresentationTimeSubsessionNormalizer(PresentationTimeSessionNormalizer& parent, FramedSource* inputSource, RTPSource* rtpSource,
+				       char const* codecName, PresentationTimeSubsessionNormalizer* next);
+      // called only from within "PresentationTimeSessionNormalizer"
+  virtual ~PresentationTimeSubsessionNormalizer();
+
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame(unsigned frameSize,
+			 unsigned numTruncatedBytes,
+			 struct timeval presentationTime,
+			 unsigned durationInMicroseconds);
+
+private: // redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  PresentationTimeSessionNormalizer& fParent;
+  RTPSource* fRTPSource;
+  RTPSink* fRTPSink;
+  char const* fCodecName;
+  PresentationTimeSubsessionNormalizer* fNext;
+};
+
+class PresentationTimeSessionNormalizer: public Medium {
+public:
+  PresentationTimeSessionNormalizer(UsageEnvironment& env);
+  virtual ~PresentationTimeSessionNormalizer();
+
+  PresentationTimeSubsessionNormalizer*
+  createNewPresentationTimeSubsessionNormalizer(FramedSource* inputSource, RTPSource* rtpSource, char const* codecName);
+
+private: // called only from within "~PresentationTimeSubsessionNormalizer":
+  friend class PresentationTimeSubsessionNormalizer;
+  void normalizePresentationTime(PresentationTimeSubsessionNormalizer* ssNormalizer,
+				 struct timeval& toPT, struct timeval const& fromPT);
+  void removePresentationTimeSubsessionNormalizer(PresentationTimeSubsessionNormalizer* ssNormalizer);
+
+private:
+  PresentationTimeSubsessionNormalizer* fSubsessionNormalizers;
+  PresentationTimeSubsessionNormalizer* fMasterSSNormalizer; // used for subsessions that have been RTCP-synced
+
+  struct timeval fPTAdjustment; // Added to (RTCP-synced) subsession presentation times to 'normalize' them with wall-clock time.
+};
+
+#endif
diff --git a/liveMedia/include/QCELPAudioRTPSource.hh b/liveMedia/include/QCELPAudioRTPSource.hh
new file mode 100644
index 0000000..de9dc5e
--- /dev/null
+++ b/liveMedia/include/QCELPAudioRTPSource.hh
@@ -0,0 +1,39 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Qualcomm "PureVoice" (aka. "QCELP") Audio RTP Sources
+// C++ header
+
+#ifndef _QCELP_AUDIO_RTP_SOURCE_HH
+#define _QCELP_AUDIO_RTP_SOURCE_HH
+
+#ifndef _RTP_SOURCE_HH
+#include "RTPSource.hh"
+#endif
+
+class QCELPAudioRTPSource {
+public:
+  static FramedSource* createNew(UsageEnvironment& env,
+				 Groupsock* RTPgs,
+				 RTPSource*& resultRTPSource,
+				 unsigned char rtpPayloadFormat = 12,
+				 unsigned rtpTimestampFrequency = 8000);
+      // This returns a source to read from, but "resultRTPSource" will
+      // point to RTP-related state.
+};
+
+#endif
diff --git a/liveMedia/include/QuickTimeFileSink.hh b/liveMedia/include/QuickTimeFileSink.hh
new file mode 100644
index 0000000..b015e16
--- /dev/null
+++ b/liveMedia/include/QuickTimeFileSink.hh
@@ -0,0 +1,192 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A sink that generates a QuickTime file from a composite media session
+// C++ header
+
+#ifndef _QUICKTIME_FILE_SINK_HH
+#define _QUICKTIME_FILE_SINK_HH
+
+#ifndef _MEDIA_SESSION_HH
+#include "MediaSession.hh"
+#endif
+
+class QuickTimeFileSink: public Medium {
+public:
+  static QuickTimeFileSink* createNew(UsageEnvironment& env,
+				      MediaSession& inputSession,
+				      char const* outputFileName,
+				      unsigned bufferSize = 20000,
+				      unsigned short movieWidth = 240,
+				      unsigned short movieHeight = 180,
+				      unsigned movieFPS = 15,
+				      Boolean packetLossCompensate = False,
+				      Boolean syncStreams = False,
+				      Boolean generateHintTracks = False,
+				      Boolean generateMP4Format = False);
+
+  typedef void (afterPlayingFunc)(void* clientData);
+  Boolean startPlaying(afterPlayingFunc* afterFunc,
+                       void* afterClientData);
+
+  unsigned numActiveSubsessions() const { return fNumSubsessions; }
+
+protected:
+  QuickTimeFileSink(UsageEnvironment& env, MediaSession& inputSession,
+		    char const* outputFileName, unsigned bufferSize,
+		    unsigned short movieWidth, unsigned short movieHeight,
+		    unsigned movieFPS, Boolean packetLossCompensate,
+		    Boolean syncStreams, Boolean generateHintTracks,
+		    Boolean generateMP4Format);
+      // called only by createNew()
+  virtual ~QuickTimeFileSink();
+
+  virtual void noteRecordedFrame(MediaSubsession& inputSubsession,
+				 unsigned packetDataSize, struct timeval const& presentationTime);
+
+private:
+  Boolean continuePlaying();
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  static void onSourceClosure(void* clientData);
+  void onSourceClosure1();
+  static void onRTCPBye(void* clientData);
+  void completeOutputFile();
+
+private:
+  friend class SubsessionIOState;
+  MediaSession& fInputSession;
+  FILE* fOutFid;
+  unsigned fBufferSize;
+  Boolean fPacketLossCompensate;
+  Boolean fSyncStreams, fGenerateMP4Format;
+  struct timeval fNewestSyncTime, fFirstDataTime;
+  Boolean fAreCurrentlyBeingPlayed;
+  afterPlayingFunc* fAfterFunc;
+  void* fAfterClientData;
+  unsigned fAppleCreationTime;
+  unsigned fLargestRTPtimestampFrequency;
+  unsigned fNumSubsessions, fNumSyncedSubsessions;
+  struct timeval fStartTime;
+  Boolean fHaveCompletedOutputFile;
+
+private:
+  ///// Definitions specific to the QuickTime file format:
+
+  unsigned addWord64(u_int64_t word);
+  unsigned addWord(unsigned word);
+  unsigned addHalfWord(unsigned short halfWord);
+  unsigned addByte(unsigned char byte) {
+    putc(byte, fOutFid);
+    return 1;
+  }
+  unsigned addZeroWords(unsigned numWords);
+  unsigned add4ByteString(char const* str);
+  unsigned addArbitraryString(char const* str,
+			      Boolean oneByteLength = True);
+  unsigned addAtomHeader(char const* atomName);
+  unsigned addAtomHeader64(char const* atomName);
+      // strlen(atomName) must be 4
+  void setWord(int64_t filePosn, unsigned size);
+  void setWord64(int64_t filePosn, u_int64_t size);
+
+  unsigned movieTimeScale() const {return fLargestRTPtimestampFrequency;}
+
+  // Define member functions for outputting various types of atom:
+#define _atom(name) unsigned addAtom_##name()
+  _atom(ftyp); // for MP4 format files
+  _atom(moov);
+      _atom(mvhd);
+  _atom(iods); // for MP4 format files
+      _atom(trak);
+          _atom(tkhd);
+          _atom(edts);
+              _atom(elst);
+          _atom(tref);
+              _atom(hint);
+          _atom(mdia);
+              _atom(mdhd);
+              _atom(hdlr);
+              _atom(minf);
+                  _atom(smhd);
+                  _atom(vmhd);
+                  _atom(gmhd);
+                      _atom(gmin);
+                  unsigned addAtom_hdlr2();
+                  _atom(dinf);
+                      _atom(dref);
+                          _atom(alis);
+                  _atom(stbl);
+                      _atom(stsd);
+                          unsigned addAtom_genericMedia();
+                          unsigned addAtom_soundMediaGeneral();
+                          _atom(ulaw);
+                          _atom(alaw);
+                          _atom(Qclp);
+                              _atom(wave);
+                                  _atom(frma);
+                                  _atom(Fclp);
+                                  _atom(Hclp);
+                          _atom(mp4a);
+//                            _atom(wave);
+//                                _atom(frma);
+                                  _atom(esds);
+                                  _atom(srcq);
+                          _atom(h263);
+                          _atom(avc1);
+                              _atom(avcC);
+                          _atom(mp4v);
+                          _atom(rtp);
+                              _atom(tims);
+                      _atom(stts);
+                      _atom(stss);
+                      _atom(stsc);
+                      _atom(stsz);
+                      _atom(co64);
+          _atom(udta);
+              _atom(name);
+              _atom(hnti);
+                  _atom(sdp);
+              _atom(hinf);
+                  _atom(totl);
+                  _atom(npck);
+                  _atom(tpay);
+                  _atom(trpy);
+                  _atom(nump);
+                  _atom(tpyl);
+                  _atom(dmed);
+                  _atom(dimm);
+                  _atom(drep);
+                  _atom(tmin);
+                  _atom(tmax);
+                  _atom(pmax);
+                  _atom(dmax);
+                  _atom(payt);
+  unsigned addAtom_dummy();
+
+private:
+  unsigned short fMovieWidth, fMovieHeight;
+  unsigned fMovieFPS;
+  int64_t fMDATposition;
+  int64_t fMVHD_durationPosn;
+  unsigned fMaxTrackDurationM; // in movie time units
+  class SubsessionIOState* fCurrentIOState;
+};
+
+#endif
diff --git a/liveMedia/include/QuickTimeGenericRTPSource.hh b/liveMedia/include/QuickTimeGenericRTPSource.hh
new file mode 100644
index 0000000..cdca3d3
--- /dev/null
+++ b/liveMedia/include/QuickTimeGenericRTPSource.hh
@@ -0,0 +1,68 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP Sources containing generic QuickTime stream data, as defined in
+//     <http://developer.apple.com/quicktime/icefloe/dispatch026.html>
+// C++ header
+
+#ifndef _QUICKTIME_GENERIC_RTP_SOURCE_HH
+#define _QUICKTIME_GENERIC_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class QuickTimeGenericRTPSource: public MultiFramedRTPSource {
+public:
+  static QuickTimeGenericRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat, unsigned rtpTimestampFrequency,
+	    char const* mimeTypeString);
+
+  // QuickTime-specific information, set from the QuickTime header
+  // in each packet.  This, along with the data following the header,
+  // is used by receivers.
+  struct QTState {
+    char PCK;
+    unsigned timescale;
+    char* sdAtom;
+    unsigned sdAtomSize;
+    unsigned short width, height;
+    // later add other state as needed #####
+  } qtState;
+
+protected:
+  virtual ~QuickTimeGenericRTPSource();
+
+private:
+  QuickTimeGenericRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+			    unsigned char rtpPayloadFormat,
+			    unsigned rtpTimestampFrequency,
+			    char const* mimeTypeString);
+      // called only by createNew()
+
+private:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  char const* fMIMEtypeString;
+};
+
+#endif
diff --git a/liveMedia/include/RTCP.hh b/liveMedia/include/RTCP.hh
new file mode 100644
index 0000000..a0550a0
--- /dev/null
+++ b/liveMedia/include/RTCP.hh
@@ -0,0 +1,248 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTCP
+// C++ header
+
+#ifndef _RTCP_HH
+#define _RTCP_HH
+
+#ifndef _RTP_SINK_HH
+#include "RTPSink.hh"
+#endif
+#ifndef _RTP_SOURCE_HH
+#include "RTPSource.hh"
+#endif
+#ifndef _SRTP_CRYPTOGRAPHIC_CONTEXT_HH
+#include "SRTPCryptographicContext.hh"
+#endif
+
+class SDESItem {
+public:
+  SDESItem(unsigned char tag, unsigned char const* value);
+
+  unsigned char const* data() const {return fData;}
+  unsigned totalSize() const;
+
+private:
+  unsigned char fData[2 + 0xFF]; // first 2 bytes are tag and length
+};
+
+typedef void RTCPAppHandlerFunc(void* clientData,
+				u_int8_t subtype, u_int32_t nameBytes/*big-endian order*/,
+				u_int8_t* appDependentData, unsigned appDependentDataSize);
+
+class RTCPMemberDatabase; // forward
+
+typedef void ByeWithReasonHandlerFunc(void* clientData, char const* reason);
+
+class RTCPInstance: public Medium {
+public:
+  static RTCPInstance* createNew(UsageEnvironment& env, Groupsock* RTCPgs,
+				 unsigned totSessionBW, /* in kbps */
+				 unsigned char const* cname,
+				 RTPSink* sink,
+				 RTPSource* source,
+				 Boolean isSSMTransmitter = False,
+				 SRTPCryptographicContext* crypto = NULL);
+
+  static Boolean lookupByName(UsageEnvironment& env, char const* instanceName,
+                              RTCPInstance*& resultInstance);
+
+  unsigned numMembers() const;
+  unsigned totSessionBW() const { return fTotSessionBW; }
+
+  void setByeHandler(TaskFunc* handlerTask, void* clientData,
+		     Boolean handleActiveParticipantsOnly = True);
+      // Assigns a handler routine to be called if a "BYE" arrives.
+      // The handler is called once only; for subsequent "BYE"s,
+      // "setByeHandler()" would need to be called again.
+      // If "handleActiveParticipantsOnly" is True, then the handler is called
+      // only if the SSRC is for a known sender (if we have a "RTPSource"),
+      // or if the SSRC is for a known receiver (if we have a "RTPSink").
+      // This prevents (for example) the handler for a multicast receiver being
+      // called if some other multicast receiver happens to exit.
+      // If "handleActiveParticipantsOnly" is False, then the handler is called
+      // for any incoming RTCP "BYE".
+      // (To remove an existing "BYE" handler, call "setByeHandler()" again, with a "handlerTask" of NULL.)
+  void setByeWithReasonHandler(ByeWithReasonHandlerFunc* handlerTask, void* clientData,
+			       Boolean handleActiveParticipantsOnly = True);
+      // Like "setByeHandler()", except that a string 'reason for the bye' (received as part of
+      // the RTCP "BYE" packet) is passed to the handler function (along with "clientData").
+      // (The 'reason' parameter to the handler function will be a dynamically-allocated string,
+      // or NULL, and should be delete[]d by the handler function.)
+  void setSRHandler(TaskFunc* handlerTask, void* clientData);
+  void setRRHandler(TaskFunc* handlerTask, void* clientData);
+      // Assigns a handler routine to be called if a "SR" or "RR" packet
+      // (respectively) arrives.  Unlike "setByeHandler()", the handler will
+      // be called once for each incoming "SR" or "RR".  (To turn off handling,
+      // call the function again with "handlerTask" (and "clientData") as NULL.)
+  void setSpecificRRHandler(netAddressBits fromAddress, Port fromPort,
+			    TaskFunc* handlerTask, void* clientData);
+      // Like "setRRHandler()", but applies only to "RR" packets that come from
+      // a specific source address and port.  (Note that if both a specific
+      // and a general "RR" handler function is set, then both will be called.)
+  void unsetSpecificRRHandler(netAddressBits fromAddress, Port fromPort); // equivalent to setSpecificRRHandler(..., NULL, NULL);
+  void setAppHandler(RTCPAppHandlerFunc* handlerTask, void* clientData);
+      // Assigns a handler routine to be called whenever an "APP" packet arrives.  (To turn off
+      // handling, call the function again with "handlerTask" (and "clientData") as NULL.)
+  void sendAppPacket(u_int8_t subtype, char const* name,
+		     u_int8_t* appDependentData, unsigned appDependentDataSize);
+      // Sends a custom RTCP "APP" packet to the peer(s).  The parameters correspond to their
+      // respective fields as described in the RTP/RTCP definition (RFC 3550).
+      // Note that only the low-order 5 bits of "subtype" are used, and only the first 4 bytes
+      // of "name" are used.  (If "name" has fewer than 4 bytes, or is NULL,
+      // then the remaining bytes are '\0'.)
+
+  Groupsock* RTCPgs() const { return fRTCPInterface.gs(); }
+
+  void setStreamSocket(int sockNum, unsigned char streamChannelId);
+  void addStreamSocket(int sockNum, unsigned char streamChannelId);
+  void removeStreamSocket(int sockNum, unsigned char streamChannelId) {
+    fRTCPInterface.removeStreamSocket(sockNum, streamChannelId);
+  }
+    // hacks to allow sending RTP over TCP (RFC 2236, section 10.12)
+
+  void setAuxilliaryReadHandler(AuxHandlerFunc* handlerFunc,
+                                void* handlerClientData) {
+    fRTCPInterface.setAuxilliaryReadHandler(handlerFunc,
+					    handlerClientData);
+  }
+
+  void injectReport(u_int8_t const* packet, unsigned packetSize, struct sockaddr_in const& fromAddress);
+    // Allows an outside party to inject an RTCP report (from other than the network interface)
+
+protected:
+  RTCPInstance(UsageEnvironment& env, Groupsock* RTPgs, unsigned totSessionBW,
+	       unsigned char const* cname,
+	       RTPSink* sink, RTPSource* source,
+	       Boolean isSSMTransmitter,
+	       SRTPCryptographicContext* crypto);
+      // called only by createNew()
+  virtual ~RTCPInstance();
+
+  virtual void noteArrivingRR(struct sockaddr_in const& fromAddressAndPort,
+			      int tcpSocketNum, unsigned char tcpStreamChannelId);
+
+  void incomingReportHandler1();
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isRTCPInstance() const;
+
+private:
+  Boolean addReport(Boolean alwaysAdd = False);
+    void addSR();
+    void addRR();
+      void enqueueCommonReportPrefix(unsigned char packetType, u_int32_t SSRC,
+				     unsigned numExtraWords = 0);
+      void enqueueCommonReportSuffix();
+        void enqueueReportBlock(RTPReceptionStats* receptionStats);
+  void addSDES();
+  void addBYE(char const* reason);
+
+  void sendBuiltPacket();
+
+  static void onExpire(RTCPInstance* instance);
+  void onExpire1();
+
+  static void incomingReportHandler(RTCPInstance* instance, int /*mask*/);
+  void processIncomingReport(unsigned packetSize, struct sockaddr_in const& fromAddressAndPort,
+			     int tcpSocketNum, unsigned char tcpStreamChannelId);
+  void onReceive(int typeOfPacket, int totPacketSize, u_int32_t ssrc);
+
+private:
+  u_int8_t* fInBuf;
+  unsigned fNumBytesAlreadyRead;
+  OutPacketBuffer* fOutBuf;
+  RTPInterface fRTCPInterface;
+  unsigned fTotSessionBW;
+  RTPSink* fSink;
+  RTPSource* fSource;
+  Boolean fIsSSMTransmitter;
+  SRTPCryptographicContext* fCrypto;
+
+  SDESItem fCNAME;
+  RTCPMemberDatabase* fKnownMembers;
+  unsigned fOutgoingReportCount; // used for SSRC member aging
+
+  double fAveRTCPSize;
+  int fIsInitial;
+  double fPrevReportTime;
+  double fNextReportTime;
+  int fPrevNumMembers;
+
+  int fLastSentSize;
+  int fLastReceivedSize;
+  u_int32_t fLastReceivedSSRC;
+  int fTypeOfEvent;
+  int fTypeOfPacket;
+  Boolean fHaveJustSentPacket;
+  unsigned fLastPacketSentSize;
+
+  TaskFunc* fByeHandlerTask;
+  ByeWithReasonHandlerFunc* fByeWithReasonHandlerTask;
+  void* fByeHandlerClientData;
+  Boolean fByeHandleActiveParticipantsOnly;
+  TaskFunc* fSRHandlerTask;
+  void* fSRHandlerClientData;
+  TaskFunc* fRRHandlerTask;
+  void* fRRHandlerClientData;
+  AddressPortLookupTable* fSpecificRRHandlerTable;
+  RTCPAppHandlerFunc* fAppHandlerTask;
+  void* fAppHandlerClientData;
+
+public: // because this stuff is used by an external "C" function
+  void schedule(double nextTime);
+  void reschedule(double nextTime);
+  void sendReport();
+  void sendBYE(char const* reason = NULL);
+  int typeOfEvent() {return fTypeOfEvent;}
+  int sentPacketSize() {return fLastSentSize;}
+  int packetType() {return fTypeOfPacket;}
+  int receivedPacketSize() {return fLastReceivedSize;}
+  int checkNewSSRC();
+  void removeLastReceivedSSRC();
+  void removeSSRC(u_int32_t ssrc, Boolean alsoRemoveStats);
+};
+
+// RTCP packet types:
+const unsigned char RTCP_PT_SR = 200;
+const unsigned char RTCP_PT_RR = 201;
+const unsigned char RTCP_PT_SDES = 202;
+const unsigned char RTCP_PT_BYE = 203;
+const unsigned char RTCP_PT_APP = 204;
+const unsigned char RTCP_PT_RTPFB = 205; // Generic RTP Feedback [RFC4585]
+const unsigned char RTCP_PT_PSFB = 206; // Payload-specific [RFC4585]
+const unsigned char RTCP_PT_XR = 207; // extended report [RFC3611]
+const unsigned char RTCP_PT_AVB = 208; // AVB RTCP packet ["Standard for Layer 3 Transport Protocol for Time Sensitive Applications in Local Area Networks." Work in progress.]
+const unsigned char RTCP_PT_RSI = 209; // Receiver Summary Information [RFC5760]
+const unsigned char RTCP_PT_TOKEN = 210; // Port Mapping [RFC6284]
+const unsigned char RTCP_PT_IDMS = 211; // IDMS Settings [RFC7272]
+
+// SDES tags:
+const unsigned char RTCP_SDES_END = 0;
+const unsigned char RTCP_SDES_CNAME = 1;
+const unsigned char RTCP_SDES_NAME = 2;
+const unsigned char RTCP_SDES_EMAIL = 3;
+const unsigned char RTCP_SDES_PHONE = 4;
+const unsigned char RTCP_SDES_LOC = 5;
+const unsigned char RTCP_SDES_TOOL = 6;
+const unsigned char RTCP_SDES_NOTE = 7;
+const unsigned char RTCP_SDES_PRIV = 8;
+
+#endif
diff --git a/liveMedia/include/RTPInterface.hh b/liveMedia/include/RTPInterface.hh
new file mode 100644
index 0000000..1b70094
--- /dev/null
+++ b/liveMedia/include/RTPInterface.hh
@@ -0,0 +1,109 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// An abstraction of a network interface used for RTP (or RTCP).
+// (This allows the RTP-over-TCP hack (RFC 2326, section 10.12) to
+// be implemented transparently.)
+// C++ header
+
+#ifndef _RTP_INTERFACE_HH
+#define _RTP_INTERFACE_HH
+
+#ifndef _MEDIA_HH
+#include <Media.hh>
+#endif
+#ifndef _GROUPSOCK_HH
+#include "Groupsock.hh"
+#endif
+
+// Typedef for an optional auxilliary handler function, to be called
+// when each new packet is read:
+typedef void AuxHandlerFunc(void* clientData, unsigned char* packet,
+			    unsigned& packetSize);
+
+typedef void ServerRequestAlternativeByteHandler(void* instance, u_int8_t requestByte);
+// A hack that allows a handler for RTP/RTCP packets received over TCP to process RTSP commands that may also appear within
+// the same TCP connection.  A RTSP server implementation would supply a function like this - as a parameter to
+// "ServerMediaSubsession::startStream()".
+
+class RTPInterface {
+public:
+  RTPInterface(Medium* owner, Groupsock* gs);
+  virtual ~RTPInterface();
+
+  Groupsock* gs() const { return fGS; }
+
+  void setStreamSocket(int sockNum, unsigned char streamChannelId);
+  void addStreamSocket(int sockNum, unsigned char streamChannelId);
+  void removeStreamSocket(int sockNum, unsigned char streamChannelId);
+  static void setServerRequestAlternativeByteHandler(UsageEnvironment& env, int socketNum,
+						     ServerRequestAlternativeByteHandler* handler, void* clientData);
+  static void clearServerRequestAlternativeByteHandler(UsageEnvironment& env, int socketNum);
+
+  Boolean sendPacket(unsigned char* packet, unsigned packetSize);
+  void startNetworkReading(TaskScheduler::BackgroundHandlerProc*
+                           handlerProc);
+  Boolean handleRead(unsigned char* buffer, unsigned bufferMaxSize,
+		     // out parameters:
+		     unsigned& bytesRead, struct sockaddr_in& fromAddress,
+		     int& tcpSocketNum, unsigned char& tcpStreamChannelId,
+		     Boolean& packetReadWasIncomplete);
+  // Note: If "tcpSocketNum" < 0, then the packet was received over UDP, and "tcpStreamChannelId"
+  //   is undefined (and irrelevant).
+
+
+  // Otherwise (if "tcpSocketNum" >= 0), the packet was received (interleaved) over TCP, and
+  //   "tcpStreamChannelId" will return the channel id.
+
+  void stopNetworkReading();
+
+  UsageEnvironment& envir() const { return fOwner->envir(); }
+
+  void setAuxilliaryReadHandler(AuxHandlerFunc* handlerFunc,
+				void* handlerClientData) {
+    fAuxReadHandlerFunc = handlerFunc;
+    fAuxReadHandlerClientData = handlerClientData;
+  }
+
+  void forgetOurGroupsock() { fGS = NULL; }
+    // This may be called - *only immediately prior* to deleting this - to prevent our destructor
+    // from turning off background reading on the 'groupsock'.  (This is in case the 'groupsock'
+    // is also being read from elsewhere.)
+
+private:
+  // Helper functions for sending a RTP or RTCP packet over a TCP connection:
+  Boolean sendRTPorRTCPPacketOverTCP(unsigned char* packet, unsigned packetSize,
+				     int socketNum, unsigned char streamChannelId);
+  Boolean sendDataOverTCP(int socketNum, u_int8_t const* data, unsigned dataSize, Boolean forceSendToSucceed);
+
+private:
+  friend class SocketDescriptor;
+  Medium* fOwner;
+  Groupsock* fGS;
+  class tcpStreamRecord* fTCPStreams; // optional, for RTP-over-TCP streaming/receiving
+
+  unsigned short fNextTCPReadSize;
+    // how much data (if any) is available to be read from the TCP stream
+  int fNextTCPReadStreamSocketNum;
+  unsigned char fNextTCPReadStreamChannelId;
+  TaskScheduler::BackgroundHandlerProc* fReadHandlerProc; // if any
+
+  AuxHandlerFunc* fAuxReadHandlerFunc;
+  void* fAuxReadHandlerClientData;
+};
+
+#endif
diff --git a/liveMedia/include/RTPSink.hh b/liveMedia/include/RTPSink.hh
new file mode 100644
index 0000000..6361c2e
--- /dev/null
+++ b/liveMedia/include/RTPSink.hh
@@ -0,0 +1,233 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP Sinks
+// C++ header
+
+#ifndef _RTP_SINK_HH
+#define _RTP_SINK_HH
+
+#ifndef _MEDIA_SINK_HH
+#include "MediaSink.hh"
+#endif
+#ifndef _RTP_INTERFACE_HH
+#include "RTPInterface.hh"
+#endif
+
+class RTPTransmissionStatsDB; // forward
+
+class RTPSink: public MediaSink {
+public:
+  static Boolean lookupByName(UsageEnvironment& env, char const* sinkName,
+			      RTPSink*& resultSink);
+
+  // used by RTSP servers:
+  Groupsock const& groupsockBeingUsed() const { return *(fRTPInterface.gs()); }
+  Groupsock& groupsockBeingUsed() { return *(fRTPInterface.gs()); }
+
+  unsigned char rtpPayloadType() const { return fRTPPayloadType; }
+  unsigned rtpTimestampFrequency() const { return fTimestampFrequency; }
+  void setRTPTimestampFrequency(unsigned freq) {
+    fTimestampFrequency = freq;
+  }
+  char const* rtpPayloadFormatName() const {return fRTPPayloadFormatName;}
+
+  unsigned numChannels() const { return fNumChannels; }
+
+  virtual char const* sdpMediaType() const; // for use in SDP m= lines
+  virtual char* rtpmapLine() const; // returns a string to be delete[]d
+  virtual char const* auxSDPLine();
+      // optional SDP line (e.g. a=fmtp:...)
+
+  u_int16_t currentSeqNo() const { return fSeqNo; }
+  u_int32_t presetNextTimestamp();
+      // ensures that the next timestamp to be used will correspond to
+      // the current 'wall clock' time.
+
+  RTPTransmissionStatsDB& transmissionStatsDB() const {
+    return *fTransmissionStatsDB;
+  }
+
+  Boolean nextTimestampHasBeenPreset() const { return fNextTimestampHasBeenPreset; }
+  Boolean& enableRTCPReports() { return fEnableRTCPReports; }
+
+  void getTotalBitrate(unsigned& outNumBytes, double& outElapsedTime);
+      // returns the number of bytes sent since the last time that we
+      // were called, and resets the counter.
+
+  struct timeval const& creationTime() const { return fCreationTime; }
+  struct timeval const& initialPresentationTime() const { return fInitialPresentationTime; }
+  struct timeval const& mostRecentPresentationTime() const { return fMostRecentPresentationTime; }
+  void resetPresentationTimes();
+
+  // Hacks to allow sending RTP over TCP (RFC 2236, section 10.12):
+  void setStreamSocket(int sockNum, unsigned char streamChannelId) {
+    fRTPInterface.setStreamSocket(sockNum, streamChannelId);
+  }
+  void addStreamSocket(int sockNum, unsigned char streamChannelId) {
+    fRTPInterface.addStreamSocket(sockNum, streamChannelId);
+  }
+  void removeStreamSocket(int sockNum, unsigned char streamChannelId) {
+    fRTPInterface.removeStreamSocket(sockNum, streamChannelId);
+  }
+  unsigned& estimatedBitrate() { return fEstimatedBitrate; } // kbps; usually 0 (i.e., unset)
+
+  u_int32_t SSRC() const {return fSSRC;}
+     // later need a means of changing the SSRC if there's a collision #####
+
+protected:
+  RTPSink(UsageEnvironment& env,
+	  Groupsock* rtpGS, unsigned char rtpPayloadType,
+	  u_int32_t rtpTimestampFrequency,
+	  char const* rtpPayloadFormatName,
+	  unsigned numChannels);
+	// abstract base class
+
+  virtual ~RTPSink();
+
+  // used by RTCP:
+  friend class RTCPInstance;
+  friend class RTPTransmissionStats;
+  u_int32_t convertToRTPTimestamp(struct timeval tv);
+  unsigned packetCount() const {return fPacketCount;}
+  unsigned octetCount() const {return fOctetCount;}
+
+protected:
+  RTPInterface fRTPInterface;
+  unsigned char fRTPPayloadType;
+  unsigned fPacketCount, fOctetCount, fTotalOctetCount /*incl RTP hdr*/;
+  struct timeval fTotalOctetCountStartTime, fInitialPresentationTime, fMostRecentPresentationTime;
+  u_int32_t fCurrentTimestamp;
+  u_int16_t fSeqNo;
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isRTPSink() const;
+
+private:
+  u_int32_t fSSRC, fTimestampBase;
+  unsigned fTimestampFrequency;
+  Boolean fNextTimestampHasBeenPreset;
+  Boolean fEnableRTCPReports; // whether RTCP "SR" reports should be sent for this sink (default: True)
+  char const* fRTPPayloadFormatName;
+  unsigned fNumChannels;
+  struct timeval fCreationTime;
+  unsigned fEstimatedBitrate; // set on creation if known; otherwise 0
+
+  RTPTransmissionStatsDB* fTransmissionStatsDB;
+};
+
+
+class RTPTransmissionStats; // forward
+
+class RTPTransmissionStatsDB {
+public:
+  unsigned numReceivers() const { return fNumReceivers; }
+
+  class Iterator {
+  public:
+    Iterator(RTPTransmissionStatsDB& receptionStatsDB);
+    virtual ~Iterator();
+
+    RTPTransmissionStats* next();
+        // NULL if none
+
+  private:
+    HashTable::Iterator* fIter;
+  };
+
+  // The following is called whenever a RTCP RR packet is received:
+  void noteIncomingRR(u_int32_t SSRC, struct sockaddr_in const& lastFromAddress,
+                      unsigned lossStats, unsigned lastPacketNumReceived,
+                      unsigned jitter, unsigned lastSRTime, unsigned diffSR_RRTime);
+
+  // The following is called when a RTCP BYE packet is received:
+  void removeRecord(u_int32_t SSRC);
+
+  RTPTransmissionStats* lookup(u_int32_t SSRC) const;
+
+private: // constructor and destructor, called only by RTPSink:
+  friend class RTPSink;
+  RTPTransmissionStatsDB(RTPSink& rtpSink);
+  virtual ~RTPTransmissionStatsDB();
+
+private:
+  void add(u_int32_t SSRC, RTPTransmissionStats* stats);
+
+private:
+  friend class Iterator;
+  unsigned fNumReceivers;
+  RTPSink& fOurRTPSink;
+  HashTable* fTable;
+};
+
+class RTPTransmissionStats {
+public:
+  u_int32_t SSRC() const {return fSSRC;}
+  struct sockaddr_in const& lastFromAddress() const {return fLastFromAddress;}
+  unsigned lastPacketNumReceived() const {return fLastPacketNumReceived;}
+  unsigned firstPacketNumReported() const {return fFirstPacketNumReported;}
+  unsigned totNumPacketsLost() const {return fTotNumPacketsLost;}
+  unsigned jitter() const {return fJitter;}
+  unsigned lastSRTime() const { return fLastSRTime; }
+  unsigned diffSR_RRTime() const { return fDiffSR_RRTime; }
+  unsigned roundTripDelay() const;
+      // The round-trip delay (in units of 1/65536 seconds) computed from
+      // the most recently-received RTCP RR packet.
+  struct timeval const& timeCreated() const {return fTimeCreated;}
+  struct timeval const& lastTimeReceived() const {return fTimeReceived;}
+  void getTotalOctetCount(u_int32_t& hi, u_int32_t& lo);
+  void getTotalPacketCount(u_int32_t& hi, u_int32_t& lo);
+
+  // Information which requires at least two RRs to have been received:
+  unsigned packetsReceivedSinceLastRR() const;
+  u_int8_t packetLossRatio() const { return fPacketLossRatio; }
+     // as an 8-bit fixed-point number
+  int packetsLostBetweenRR() const;
+
+private:
+  // called only by RTPTransmissionStatsDB:
+  friend class RTPTransmissionStatsDB;
+  RTPTransmissionStats(RTPSink& rtpSink, u_int32_t SSRC);
+  virtual ~RTPTransmissionStats();
+
+  void noteIncomingRR(struct sockaddr_in const& lastFromAddress,
+		      unsigned lossStats, unsigned lastPacketNumReceived,
+                      unsigned jitter,
+		      unsigned lastSRTime, unsigned diffSR_RRTime);
+
+private:
+  RTPSink& fOurRTPSink;
+  u_int32_t fSSRC;
+  struct sockaddr_in fLastFromAddress;
+  unsigned fLastPacketNumReceived;
+  u_int8_t fPacketLossRatio;
+  unsigned fTotNumPacketsLost;
+  unsigned fJitter;
+  unsigned fLastSRTime;
+  unsigned fDiffSR_RRTime;
+  struct timeval fTimeCreated, fTimeReceived;
+  Boolean fAtLeastTwoRRsHaveBeenReceived;
+  unsigned fOldLastPacketNumReceived;
+  unsigned fOldTotNumPacketsLost;
+  Boolean fFirstPacket;
+  unsigned fFirstPacketNumReported;
+  u_int32_t fLastOctetCount, fTotalOctetCount_hi, fTotalOctetCount_lo;
+  u_int32_t fLastPacketCount, fTotalPacketCount_hi, fTotalPacketCount_lo;
+};
+
+#endif
diff --git a/liveMedia/include/RTPSource.hh b/liveMedia/include/RTPSource.hh
new file mode 100644
index 0000000..82ba4c5
--- /dev/null
+++ b/liveMedia/include/RTPSource.hh
@@ -0,0 +1,271 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP Sources
+// C++ header
+
+#ifndef _RTP_SOURCE_HH
+#define _RTP_SOURCE_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+#ifndef _RTP_INTERFACE_HH
+#include "RTPInterface.hh"
+#endif
+#ifndef _SRTP_CRYPTOGRAPHIC_CONTEXT_HH
+#include "SRTPCryptographicContext.hh"
+#endif
+
+class RTPReceptionStatsDB; // forward
+
+class RTPSource: public FramedSource {
+public:
+  static Boolean lookupByName(UsageEnvironment& env, char const* sourceName,
+			      RTPSource*& resultSource);
+
+  Boolean curPacketMarkerBit() const { return fCurPacketMarkerBit; }
+
+  unsigned char rtpPayloadFormat() const { return fRTPPayloadFormat; }
+
+  virtual Boolean hasBeenSynchronizedUsingRTCP();
+
+  Groupsock* RTPgs() const { return fRTPInterface.gs(); }
+
+  virtual void setPacketReorderingThresholdTime(unsigned uSeconds) = 0;
+
+  void setCrypto(SRTPCryptographicContext* crypto) { fCrypto = crypto; }
+
+  // used by RTCP:
+  u_int32_t SSRC() const { return fSSRC; }
+      // Note: This is *our* SSRC, not the SSRC in incoming RTP packets.
+     // later need a means of changing the SSRC if there's a collision #####
+  void registerForMultiplexedRTCPPackets(class RTCPInstance* rtcpInstance) {
+    fRTCPInstanceForMultiplexedRTCPPackets = rtcpInstance;
+  }
+  void deregisterForMultiplexedRTCPPackets() { registerForMultiplexedRTCPPackets(NULL); }
+
+  unsigned timestampFrequency() const {return fTimestampFrequency;}
+
+  RTPReceptionStatsDB& receptionStatsDB() const {
+    return *fReceptionStatsDB;
+  }
+
+  u_int32_t lastReceivedSSRC() const { return fLastReceivedSSRC; }
+  // Note: This is the SSRC in the most recently received RTP packet; not *our* SSRC
+
+  Boolean& enableRTCPReports() { return fEnableRTCPReports; }
+  Boolean const& enableRTCPReports() const { return fEnableRTCPReports; }
+
+  void setStreamSocket(int sockNum, unsigned char streamChannelId) {
+    // hack to allow sending RTP over TCP (RFC 2236, section 10.12)
+    fRTPInterface.setStreamSocket(sockNum, streamChannelId);
+  }
+
+  void setAuxilliaryReadHandler(AuxHandlerFunc* handlerFunc,
+                                void* handlerClientData) {
+    fRTPInterface.setAuxilliaryReadHandler(handlerFunc,
+					   handlerClientData);
+  }
+
+  // Note that RTP receivers will usually not need to call either of the following two functions, because
+  // RTP sequence numbers and timestamps are usually not useful to receivers.
+  // (Our implementation of RTP reception already does all needed handling of RTP sequence numbers and timestamps.)
+  u_int16_t curPacketRTPSeqNum() const { return fCurPacketRTPSeqNum; }
+  u_int32_t curPacketRTPTimestamp() const { return fCurPacketRTPTimestamp; }
+
+protected:
+  RTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat, u_int32_t rtpTimestampFrequency);
+      // abstract base class
+  virtual ~RTPSource();
+
+protected:
+  RTPInterface fRTPInterface;
+  u_int16_t fCurPacketRTPSeqNum;
+  u_int32_t fCurPacketRTPTimestamp;
+  Boolean fCurPacketMarkerBit;
+  Boolean fCurPacketHasBeenSynchronizedUsingRTCP;
+  u_int32_t fLastReceivedSSRC;
+  class RTCPInstance* fRTCPInstanceForMultiplexedRTCPPackets;
+  SRTPCryptographicContext* fCrypto;
+
+private:
+  // redefined virtual functions:
+  virtual Boolean isRTPSource() const;
+  virtual void getAttributes() const;
+
+private:
+  unsigned char fRTPPayloadFormat;
+  unsigned fTimestampFrequency;
+  u_int32_t fSSRC;
+  Boolean fEnableRTCPReports; // whether RTCP "RR" reports should be sent for this source (default: True)
+
+  RTPReceptionStatsDB* fReceptionStatsDB;
+};
+
+
+class RTPReceptionStats; // forward
+
+class RTPReceptionStatsDB {
+public:
+  unsigned totNumPacketsReceived() const { return fTotNumPacketsReceived; }
+  unsigned numActiveSourcesSinceLastReset() const {
+    return fNumActiveSourcesSinceLastReset;
+ }
+
+  void reset();
+      // resets periodic stats (called each time they're used to
+      // generate a reception report)
+
+  class Iterator {
+  public:
+    Iterator(RTPReceptionStatsDB& receptionStatsDB);
+    virtual ~Iterator();
+
+    RTPReceptionStats* next(Boolean includeInactiveSources = False);
+        // NULL if none
+
+  private:
+    HashTable::Iterator* fIter;
+  };
+
+  // The following is called whenever a RTP packet is received:
+  void noteIncomingPacket(u_int32_t SSRC, u_int16_t seqNum,
+			  u_int32_t rtpTimestamp,
+			  unsigned timestampFrequency,
+			  Boolean useForJitterCalculation,
+			  struct timeval& resultPresentationTime,
+			  Boolean& resultHasBeenSyncedUsingRTCP,
+			  unsigned packetSize /* payload only */);
+
+  // The following is called whenever a RTCP SR packet is received:
+  void noteIncomingSR(u_int32_t SSRC,
+		      u_int32_t ntpTimestampMSW, u_int32_t ntpTimestampLSW,
+		      u_int32_t rtpTimestamp);
+
+  // The following is called when a RTCP BYE packet is received:
+  void removeRecord(u_int32_t SSRC);
+
+  RTPReceptionStats* lookup(u_int32_t SSRC) const;
+
+protected: // constructor and destructor, called only by RTPSource:
+  friend class RTPSource;
+  RTPReceptionStatsDB();
+  virtual ~RTPReceptionStatsDB();
+
+protected:
+  void add(u_int32_t SSRC, RTPReceptionStats* stats);
+
+protected:
+  friend class Iterator;
+  unsigned fNumActiveSourcesSinceLastReset;
+
+private:
+  HashTable* fTable;
+  unsigned fTotNumPacketsReceived; // for all SSRCs
+};
+
+class RTPReceptionStats {
+public:
+  u_int32_t SSRC() const { return fSSRC; }
+  unsigned numPacketsReceivedSinceLastReset() const {
+    return fNumPacketsReceivedSinceLastReset;
+  }
+  unsigned totNumPacketsReceived() const { return fTotNumPacketsReceived; }
+  double totNumKBytesReceived() const;
+
+  unsigned totNumPacketsExpected() const {
+    return (fHighestExtSeqNumReceived - fBaseExtSeqNumReceived) + 1;
+  }
+
+  unsigned baseExtSeqNumReceived() const { return fBaseExtSeqNumReceived; }
+  unsigned lastResetExtSeqNumReceived() const {
+    return fLastResetExtSeqNumReceived;
+  }
+  unsigned highestExtSeqNumReceived() const {
+    return fHighestExtSeqNumReceived;
+  }
+
+  unsigned jitter() const;
+
+  unsigned lastReceivedSR_NTPmsw() const { return fLastReceivedSR_NTPmsw; }
+  unsigned lastReceivedSR_NTPlsw() const { return fLastReceivedSR_NTPlsw; }
+  struct timeval const& lastReceivedSR_time() const {
+    return fLastReceivedSR_time;
+  }
+
+  unsigned minInterPacketGapUS() const { return fMinInterPacketGapUS; }
+  unsigned maxInterPacketGapUS() const { return fMaxInterPacketGapUS; }
+  struct timeval const& totalInterPacketGaps() const {
+    return fTotalInterPacketGaps;
+  }
+
+protected:
+  // called only by RTPReceptionStatsDB:
+  friend class RTPReceptionStatsDB;
+  RTPReceptionStats(u_int32_t SSRC, u_int16_t initialSeqNum);
+  RTPReceptionStats(u_int32_t SSRC);
+  virtual ~RTPReceptionStats();
+
+private:
+  void noteIncomingPacket(u_int16_t seqNum, u_int32_t rtpTimestamp,
+			  unsigned timestampFrequency,
+			  Boolean useForJitterCalculation,
+			  struct timeval& resultPresentationTime,
+			  Boolean& resultHasBeenSyncedUsingRTCP,
+			  unsigned packetSize /* payload only */);
+  void noteIncomingSR(u_int32_t ntpTimestampMSW, u_int32_t ntpTimestampLSW,
+		      u_int32_t rtpTimestamp);
+  void init(u_int32_t SSRC);
+  void initSeqNum(u_int16_t initialSeqNum);
+  void reset();
+      // resets periodic stats (called each time they're used to
+      // generate a reception report)
+
+protected:
+  u_int32_t fSSRC;
+  unsigned fNumPacketsReceivedSinceLastReset;
+  unsigned fTotNumPacketsReceived;
+  u_int32_t fTotBytesReceived_hi, fTotBytesReceived_lo;
+  Boolean fHaveSeenInitialSequenceNumber;
+  unsigned fBaseExtSeqNumReceived;
+  unsigned fLastResetExtSeqNumReceived;
+  unsigned fHighestExtSeqNumReceived;
+  int fLastTransit; // used in the jitter calculation
+  u_int32_t fPreviousPacketRTPTimestamp;
+  double fJitter;
+  // The following are recorded whenever we receive a RTCP SR for this SSRC:
+  unsigned fLastReceivedSR_NTPmsw; // NTP timestamp (from SR), most-signif
+  unsigned fLastReceivedSR_NTPlsw; // NTP timestamp (from SR), least-signif
+  struct timeval fLastReceivedSR_time;
+  struct timeval fLastPacketReceptionTime;
+  unsigned fMinInterPacketGapUS, fMaxInterPacketGapUS;
+  struct timeval fTotalInterPacketGaps;
+
+private:
+  // Used to convert from RTP timestamp to 'wall clock' time:
+  Boolean fHasBeenSynchronized;
+  u_int32_t fSyncTimestamp;
+  struct timeval fSyncTime;
+};
+
+
+Boolean seqNumLT(u_int16_t s1, u_int16_t s2);
+  // a 'less-than' on 16-bit sequence numbers
+
+#endif
diff --git a/liveMedia/include/RTSPClient.hh b/liveMedia/include/RTSPClient.hh
new file mode 100644
index 0000000..e398a75
--- /dev/null
+++ b/liveMedia/include/RTSPClient.hh
@@ -0,0 +1,408 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic RTSP client - for a single "rtsp://" URL
+// C++ header
+
+#ifndef _RTSP_CLIENT_HH
+#define _RTSP_CLIENT_HH
+
+#ifndef _MEDIA_SESSION_HH
+#include "MediaSession.hh"
+#endif
+#ifndef _NET_ADDRESS_HH
+#include "NetAddress.hh"
+#endif
+#ifndef _DIGEST_AUTHENTICATION_HH
+#include "DigestAuthentication.hh"
+#endif
+#ifndef _TLS_STATE_HH
+#include "TLSState.hh"
+#endif
+#ifndef OMIT_REGISTER_HANDLING
+#ifndef _RTSP_SERVER_HH
+#include "RTSPServer.hh" // For the optional "HandlerForREGISTERCommand" mini-server
+#endif
+#endif
+
+class RTSPClient: public Medium {
+public:
+  static RTSPClient* createNew(UsageEnvironment& env, char const* rtspURL,
+			       int verbosityLevel = 0,
+			       char const* applicationName = NULL,
+			       portNumBits tunnelOverHTTPPortNum = 0,
+			       int socketNumToServer = -1);
+  // If "tunnelOverHTTPPortNum" is non-zero, we tunnel RTSP (and RTP)
+  //     over a HTTP connection with the given port number, using the technique
+  //     described in Apple's document <http://developer.apple.com/documentation/QuickTime/QTSS/Concepts/chapter_2_section_14.html>
+  // If "socketNumToServer" is >= 0, then it is the socket number of an already-existing TCP connection to the server.
+  //     (In this case, "rtspURL" must point to the socket's endpoint, so that it can be accessed via the socket.)
+
+  typedef void (responseHandler)(RTSPClient* rtspClient,
+				 int resultCode, char* resultString);
+      // A function that is called in response to a RTSP command.  The parameters are as follows:
+      //     "rtspClient": The "RTSPClient" object on which the original command was issued.
+      //     "resultCode": If zero, then the command completed successfully.  If non-zero, then the command did not complete
+      //         successfully, and "resultCode" indicates the error, as follows:
+      //             A positive "resultCode" is a RTSP error code (for example, 404 means "not found")
+      //             A negative "resultCode" indicates a socket/network error; 0-"resultCode" is the standard "errno" code.
+      //     "resultString": A ('\0'-terminated) string returned along with the response, or else NULL.
+      //         In particular:
+      //             "resultString" for a successful "DESCRIBE" command will be the media session's SDP description.
+      //             "resultString" for a successful "OPTIONS" command will be a list of allowed commands.
+      //         Note that this string can be present (i.e., not NULL) even if "resultCode" is non-zero - i.e., an error message.
+      //         Also, "resultString" can be NULL, even if "resultCode" is zero (e.g., if the RTSP command succeeded, but without
+      //             including an appropriate result header).
+      //         Note also that this string is dynamically allocated, and must be freed by the handler (or the caller)
+      //             - using "delete[]".
+
+  unsigned sendDescribeCommand(responseHandler* responseHandler, Authenticator* authenticator = NULL);
+      // Issues a RTSP "DESCRIBE" command, then returns the "CSeq" sequence number that was used in the command.
+      // The (programmer-supplied) "responseHandler" function is called later to handle the response
+      //     (or is called immediately - with an error code - if the command cannot be sent).
+      // "authenticator" (optional) is used for access control.  If you have username and password strings, you can use this by
+      //     passing an actual parameter that you created by creating an "Authenticator(username, password) object".
+      //     (Note that if you supply a non-NULL "authenticator" parameter, you need do this only for the first command you send.)
+
+  unsigned sendOptionsCommand(responseHandler* responseHandler, Authenticator* authenticator = NULL);
+      // Issues a RTSP "OPTIONS" command, then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+
+  unsigned sendAnnounceCommand(char const* sdpDescription, responseHandler* responseHandler, Authenticator* authenticator = NULL);
+      // Issues a RTSP "ANNOUNCE" command (with "sdpDescription" as parameter),
+      //     then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+
+  unsigned sendSetupCommand(MediaSubsession& subsession, responseHandler* responseHandler,
+			    Boolean streamOutgoing = False,
+			    Boolean streamUsingTCP = False,
+			    Boolean forceMulticastOnUnspecified = False,
+			    Authenticator* authenticator = NULL);
+      // Issues a RTSP "SETUP" command, then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+
+  unsigned sendPlayCommand(MediaSession& session, responseHandler* responseHandler,
+			   double start = 0.0f, double end = -1.0f, float scale = 1.0f,
+			   Authenticator* authenticator = NULL);
+      // Issues an aggregate RTSP "PLAY" command on "session", then returns the "CSeq" sequence number that was used in the command.
+      // (Note: start=-1 means 'resume'; end=-1 means 'play to end')
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+  unsigned sendPlayCommand(MediaSubsession& subsession, responseHandler* responseHandler,
+			   double start = 0.0f, double end = -1.0f, float scale = 1.0f,
+			   Authenticator* authenticator = NULL);
+      // Issues a RTSP "PLAY" command on "subsession", then returns the "CSeq" sequence number that was used in the command.
+      // (Note: start=-1 means 'resume'; end=-1 means 'play to end')
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+
+  // Alternative forms of "sendPlayCommand()", used to send "PLAY" commands that include an 'absolute' time range:
+  // (The "absStartTime" string (and "absEndTime" string, if present) *must* be of the form
+  //  "YYYYMMDDTHHMMSSZ" or "YYYYMMDDTHHMMSS.<frac>Z")
+  unsigned sendPlayCommand(MediaSession& session, responseHandler* responseHandler,
+			   char const* absStartTime, char const* absEndTime = NULL, float scale = 1.0f,
+			   Authenticator* authenticator = NULL);
+  unsigned sendPlayCommand(MediaSubsession& subsession, responseHandler* responseHandler,
+			   char const* absStartTime, char const* absEndTime = NULL, float scale = 1.0f,
+			   Authenticator* authenticator = NULL);
+
+  unsigned sendPauseCommand(MediaSession& session, responseHandler* responseHandler, Authenticator* authenticator = NULL);
+      // Issues an aggregate RTSP "PAUSE" command on "session", then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+  unsigned sendPauseCommand(MediaSubsession& subsession, responseHandler* responseHandler, Authenticator* authenticator = NULL);
+      // Issues a RTSP "PAUSE" command on "subsession", then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+
+  unsigned sendRecordCommand(MediaSession& session, responseHandler* responseHandler, Authenticator* authenticator = NULL);
+      // Issues an aggregate RTSP "RECORD" command on "session", then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+  unsigned sendRecordCommand(MediaSubsession& subsession, responseHandler* responseHandler, Authenticator* authenticator = NULL);
+      // Issues a RTSP "RECORD" command on "subsession", then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+
+  unsigned sendTeardownCommand(MediaSession& session, responseHandler* responseHandler, Authenticator* authenticator = NULL);
+      // Issues an aggregate RTSP "TEARDOWN" command on "session", then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+  unsigned sendTeardownCommand(MediaSubsession& subsession, responseHandler* responseHandler, Authenticator* authenticator = NULL);
+      // Issues a RTSP "TEARDOWN" command on "subsession", then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+
+  unsigned sendSetParameterCommand(MediaSession& session, responseHandler* responseHandler,
+				   char const* parameterName, char const* parameterValue,
+				   Authenticator* authenticator = NULL);
+      // Issues an aggregate RTSP "SET_PARAMETER" command on "session", then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+
+  unsigned sendGetParameterCommand(MediaSession& session, responseHandler* responseHandler, char const* parameterName,
+				   Authenticator* authenticator = NULL);
+      // Issues an aggregate RTSP "GET_PARAMETER" command on "session", then returns the "CSeq" sequence number that was used in the command.
+      // (The "responseHandler" and "authenticator" parameters are as described for "sendDescribeCommand".)
+
+  void sendDummyUDPPackets(MediaSession& session, unsigned numDummyPackets = 2);
+  void sendDummyUDPPackets(MediaSubsession& subsession, unsigned numDummyPackets = 2);
+      // Sends short 'dummy' (i.e., non-RTP or RTCP) UDP packets towards the server, to increase
+      // the likelihood of RTP/RTCP packets from the server reaching us if we're behind a NAT.
+      // (If we requested RTP-over-TCP streaming, then these functions have no effect.)
+      // Our implementation automatically does this just prior to sending each "PLAY" command;
+      // You should not call these functions yourself unless you know what you're doing.
+
+  void setSpeed(MediaSession& session, float speed = 1.0f);
+      // Set (recorded) media download speed to given value to support faster download using 'Speed:'
+      // option on 'PLAY' command.
+
+  Boolean changeResponseHandler(unsigned cseq, responseHandler* newResponseHandler);
+      // Changes the response handler for the previously-performed command (whose operation returned "cseq").
+      // (To turn off any response handling for the command, use a "newResponseHandler" value of NULL.  This might be done as part
+      //  of an implementation of a 'timeout handler' on the command, for example.)
+      // This function returns True iff "cseq" was for a valid previously-performed command (whose response is still unhandled).
+
+  int socketNum() const { return fInputSocketNum; }
+
+  static Boolean lookupByName(UsageEnvironment& env,
+			      char const* sourceName,
+			      RTSPClient*& resultClient);
+
+  Boolean parseRTSPURL(char const* url,
+		       char*& username, char*& password, NetAddress& address, portNumBits& portNum, char const** urlSuffix = NULL);
+      // Parses "url" as "rtsp://[<username>[:<password>]@]<server-address-or-name>[:<port>][/<stream-name>]"
+      // (Note that the returned "username" and "password" are either NULL, or heap-allocated strings that the caller must later delete[].)
+
+  void setUserAgentString(char const* userAgentName);
+      // sets an alternative string to be used in RTSP "User-Agent:" headers
+
+  void disallowBasicAuthentication() { fAllowBasicAuthentication = False; }
+      // call this if you don't want the server to request 'Basic' authentication
+      // (which would cause the client to send usernames and passwords over the net).
+
+  unsigned sessionTimeoutParameter() const { return fSessionTimeoutParameter; }
+
+  char const* url() const { return fBaseURL; }
+
+  void useTLS() { fTLS.isNeeded = True; }
+
+  static unsigned responseBufferSize;
+
+public: // Some compilers complain if this is "private:"
+  // The state of a request-in-progress:
+  class RequestRecord {
+  public:
+    RequestRecord(unsigned cseq, char const* commandName, responseHandler* handler,
+		  MediaSession* session = NULL, MediaSubsession* subsession = NULL, u_int32_t booleanFlags = 0,
+		  double start = 0.0f, double end = -1.0f, float scale = 1.0f, char const* contentStr = NULL);
+    RequestRecord(unsigned cseq, responseHandler* handler,
+		  char const* absStartTime, char const* absEndTime = NULL, float scale = 1.0f,
+		  MediaSession* session = NULL, MediaSubsession* subsession = NULL);
+        // alternative constructor for creating "PLAY" requests that include 'absolute' time values
+    virtual ~RequestRecord();
+
+    RequestRecord*& next() { return fNext; }
+    unsigned& cseq() { return fCSeq; }
+    char const* commandName() const { return fCommandName; }
+    MediaSession* session() const { return fSession; }
+    MediaSubsession* subsession() const { return fSubsession; }
+    u_int32_t booleanFlags() const { return fBooleanFlags; }
+    double start() const { return fStart; }
+    double end() const { return fEnd; }
+    char const* absStartTime() const { return fAbsStartTime; }
+    char const* absEndTime() const { return fAbsEndTime; }
+    float scale() const { return fScale; }
+    char* contentStr() const { return fContentStr; }
+    responseHandler*& handler() { return fHandler; }
+
+  private:
+    RequestRecord* fNext;
+    unsigned fCSeq;
+    char const* fCommandName;
+    MediaSession* fSession;
+    MediaSubsession* fSubsession;
+    u_int32_t fBooleanFlags;
+    double fStart, fEnd;
+    char *fAbsStartTime, *fAbsEndTime; // used for optional 'absolute' (i.e., "time=") range specifications
+    float fScale;
+    char* fContentStr;
+    responseHandler* fHandler;
+  };
+
+protected:
+  RTSPClient(UsageEnvironment& env, char const* rtspURL,
+	     int verbosityLevel, char const* applicationName, portNumBits tunnelOverHTTPPortNum, int socketNumToServer);
+      // called only by createNew();
+  virtual ~RTSPClient();
+
+  void reset();
+  void setBaseURL(char const* url);
+  int grabSocket(); // allows a subclass to reuse our input socket, so that it won't get closed when we're deleted
+  virtual unsigned sendRequest(RequestRecord* request);
+  virtual Boolean setRequestFields(RequestRecord* request,
+				   char*& cmdURL, Boolean& cmdURLWasAllocated,
+				   char const*& protocolStr,
+				   char*& extraHeaders, Boolean& extraHeadersWereAllocated);
+      // used to implement "sendRequest()"; subclasses may reimplement this (e.g., when implementing a new command name)
+  virtual int connectToServer(int socketNum, portNumBits remotePortNum); // used to implement "openConnection()"; result values: -1: failure; 0: pending; 1: success
+
+private: // redefined virtual functions
+  virtual Boolean isRTSPClient() const;
+
+private:
+  class RequestQueue {
+  public:
+    RequestQueue();
+    RequestQueue(RequestQueue& origQueue); // moves the queue contents to the new queue
+    virtual ~RequestQueue();
+
+    void enqueue(RequestRecord* request); // "request" must not be NULL
+    RequestRecord* dequeue();
+    void putAtHead(RequestRecord* request); // "request" must not be NULL
+    RequestRecord* findByCSeq(unsigned cseq);
+    Boolean isEmpty() const { return fHead == NULL; }
+    void reset();
+
+  private:
+    RequestRecord* fHead;
+    RequestRecord* fTail;
+  };
+
+  void resetTCPSockets();
+  void resetResponseBuffer();
+  int openConnection(); // result values: -1: failure; 0: pending; 1: success
+  char* createAuthenticatorString(char const* cmd, char const* url);
+  char* createBlocksizeString(Boolean streamUsingTCP);
+  char* createKeyMgmtString(char const* url, MediaSubsession const& subsession);
+  void handleRequestError(RequestRecord* request);
+  Boolean parseResponseCode(char const* line, unsigned& responseCode, char const*& responseString);
+  void handleIncomingRequest();
+  static Boolean checkForHeader(char const* line, char const* headerName, unsigned headerNameLength, char const*& headerParams);
+  Boolean parseTransportParams(char const* paramsStr,
+			       char*& serverAddressStr, portNumBits& serverPortNum,
+			       unsigned char& rtpChannelId, unsigned char& rtcpChannelId);
+  Boolean parseScaleParam(char const* paramStr, float& scale);
+  Boolean parseSpeedParam(char const* paramStr, float& speed);
+  Boolean parseRTPInfoParams(char const*& paramStr, u_int16_t& seqNum, u_int32_t& timestamp);
+  Boolean handleSETUPResponse(MediaSubsession& subsession, char const* sessionParamsStr, char const* transportParamsStr,
+			      Boolean streamUsingTCP);
+  Boolean handlePLAYResponse(MediaSession* session, MediaSubsession* subsession,
+                             char const* scaleParamsStr, const char* speedParamsStr,
+			     char const* rangeParamsStr, char const* rtpInfoParamsStr);
+  Boolean handleTEARDOWNResponse(MediaSession& session, MediaSubsession& subsession);
+  Boolean handleGET_PARAMETERResponse(char const* parameterName, char*& resultValueString, char* resultValueStringEnd);
+  Boolean handleAuthenticationFailure(char const* wwwAuthenticateParamsStr);
+  Boolean resendCommand(RequestRecord* request);
+  char const* sessionURL(MediaSession const& session) const;
+  static void handleAlternativeRequestByte(void*, u_int8_t requestByte);
+  void handleAlternativeRequestByte1(u_int8_t requestByte);
+  void constructSubsessionURL(MediaSubsession const& subsession,
+			      char const*& prefix,
+			      char const*& separator,
+			      char const*& suffix);
+
+  // Support for tunneling RTSP-over-HTTP:
+  Boolean setupHTTPTunneling1(); // send the HTTP "GET"
+  static void responseHandlerForHTTP_GET(RTSPClient* rtspClient, int responseCode, char* responseString);
+  void responseHandlerForHTTP_GET1(int responseCode, char* responseString);
+  Boolean setupHTTPTunneling2(); // send the HTTP "POST"
+
+  // Support for asynchronous connections to the server:
+  static void connectionHandler(void*, int /*mask*/);
+  void connectionHandler1();
+
+  // Support for handling data sent back by a server:
+  static void incomingDataHandler(void*, int /*mask*/);
+  void incomingDataHandler1();
+  void handleResponseBytes(int newBytesRead);
+
+  // Writing/reading data over a (already set-up) connection:
+  int write(const char* data, unsigned count);
+  int read(u_int8_t* buffer, unsigned bufferSize);
+
+public:
+  u_int16_t desiredMaxIncomingPacketSize;
+    // If set to a value >0, then a "Blocksize:" header with this value (minus an allowance for
+    // IP, UDP, and RTP headers) will be sent with each "SETUP" request.
+
+protected:
+  int fVerbosityLevel;
+  unsigned fCSeq; // sequence number, used in consecutive requests
+  Authenticator fCurrentAuthenticator;
+  Boolean fAllowBasicAuthentication;
+  netAddressBits fServerAddress;
+
+private:
+  portNumBits fTunnelOverHTTPPortNum;
+  char* fUserAgentHeaderStr;
+  unsigned fUserAgentHeaderStrLen;
+  int fInputSocketNum, fOutputSocketNum;
+  char* fBaseURL;
+  unsigned char fTCPStreamIdCount; // used for (optional) RTP/TCP
+  char* fLastSessionId;
+  unsigned fSessionTimeoutParameter; // optionally set in response "Session:" headers
+  char* fResponseBuffer;
+  unsigned fResponseBytesAlreadySeen, fResponseBufferBytesLeft;
+  RequestQueue fRequestsAwaitingConnection, fRequestsAwaitingHTTPTunneling, fRequestsAwaitingResponse;
+
+  // Support for tunneling RTSP-over-HTTP:
+  char fSessionCookie[33];
+  unsigned fSessionCookieCounter;
+  Boolean fHTTPTunnelingConnectionIsPending;
+
+  // Optional support for TLS:
+  TLSState fTLS;
+  friend class TLSState;
+};
+
+
+#ifndef OMIT_REGISTER_HANDLING
+////////// HandlerServerForREGISTERCommand /////////
+
+// A simple server that creates a new "RTSPClient" object whenever a "REGISTER" request arrives (specifying the "rtsp://" URL
+// of a stream).  The new "RTSPClient" object will be created with the specified URL, and passed to the provided handler function.
+
+typedef void onRTSPClientCreationFunc(RTSPClient* newRTSPClient, Boolean requestStreamingOverTCP);
+
+class HandlerServerForREGISTERCommand: public RTSPServer {
+public:
+  static HandlerServerForREGISTERCommand* createNew(UsageEnvironment& env, onRTSPClientCreationFunc* creationFunc,
+						    Port ourPort = 0, UserAuthenticationDatabase* authDatabase = NULL,
+						    int verbosityLevel = 0, char const* applicationName = NULL);
+      // If ourPort.num() == 0, we'll choose the port number ourself.  (Use the following function to get it.)
+  portNumBits serverPortNum() const { return ntohs(fServerPort.num()); }
+
+protected:
+  HandlerServerForREGISTERCommand(UsageEnvironment& env, onRTSPClientCreationFunc* creationFunc, int ourSocket, Port ourPort,
+				  UserAuthenticationDatabase* authDatabase, int verbosityLevel, char const* applicationName);
+      // called only by createNew();
+  virtual ~HandlerServerForREGISTERCommand();
+
+  virtual RTSPClient* createNewRTSPClient(char const* rtspURL, int verbosityLevel, char const* applicationName,
+					  int socketNumToServer);
+      // This function - by default - creates a (base) "RTSPClient" object.  If you want to create a subclass
+      // of "RTSPClient" instead, then subclass this class, and redefine this virtual function.
+
+protected: // redefined virtual functions
+  virtual char const* allowedCommandNames(); // "OPTIONS", "REGISTER", and (perhaps) "DEREGISTER" only
+  virtual Boolean weImplementREGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+				      char const* proxyURLSuffix, char*& responseStr);
+      // redefined to return True (for cmd=="REGISTER")
+  virtual void implementCmd_REGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+				     char const* url, char const* urlSuffix, int socketToRemoteServer,
+				     Boolean deliverViaTCP, char const* proxyURLSuffix);
+
+private:
+  onRTSPClientCreationFunc* fCreationFunc;
+  int fVerbosityLevel;
+  char* fApplicationName;
+};
+#endif
+
+#endif
diff --git a/liveMedia/include/RTSPCommon.hh b/liveMedia/include/RTSPCommon.hh
new file mode 100644
index 0000000..3d38fa3
--- /dev/null
+++ b/liveMedia/include/RTSPCommon.hh
@@ -0,0 +1,65 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Common routines used by both RTSP clients and servers
+// C++ header
+
+#ifndef _RTSP_COMMON_HH
+#define _RTSP_COMMON_HH
+
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+
+#ifndef _MEDIA_HH
+#include <Media.hh> // includes some definitions perhaps needed for Borland compilers?
+#endif
+
+#if defined(__WIN32__) || defined(_WIN32) || defined(_QNX4)
+#define _strncasecmp _strnicmp
+#define snprintf _snprintf
+#else
+#define _strncasecmp strncasecmp
+#endif
+
+#define RTSP_PARAM_STRING_MAX 200
+
+Boolean parseRTSPRequestString(char const *reqStr, unsigned reqStrSize,
+			       char *resultCmdName,
+			       unsigned resultCmdNameMaxSize,
+			       char* resultURLPreSuffix,
+			       unsigned resultURLPreSuffixMaxSize,
+			       char* resultURLSuffix,
+			       unsigned resultURLSuffixMaxSize,
+			       char* resultCSeq,
+			       unsigned resultCSeqMaxSize,
+			       char* resultSessionId,
+			       unsigned resultSessionIdMaxSize,
+			       unsigned& contentLength);
+
+Boolean parseRangeParam(char const* paramStr, double& rangeStart, double& rangeEnd, char*& absStartTime, char*& absEndTime, Boolean& startTimeIsNow);
+Boolean parseRangeHeader(char const* buf, double& rangeStart, double& rangeEnd, char*& absStartTime, char*& absEndTime, Boolean& startTimeIsNow);
+
+Boolean parseScaleHeader(char const* buf, float& scale);
+
+Boolean RTSPOptionIsSupported(char const* commandName, char const* optionsResponseString);
+    // Returns True iff the RTSP command "commandName" is mentioned as one of the commands supported in "optionsResponseString"
+    // (which should be the 'resultString' from a previous RTSP "OPTIONS" request).
+
+char const* dateHeader(); // A "Date:" header that can be used in a RTSP (or HTTP) response 
+
+#endif
diff --git a/liveMedia/include/RTSPRegisterSender.hh b/liveMedia/include/RTSPRegisterSender.hh
new file mode 100644
index 0000000..6d68bd0
--- /dev/null
+++ b/liveMedia/include/RTSPRegisterSender.hh
@@ -0,0 +1,138 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Special objects which, when created, sends a custom RTSP "REGISTER" (or "DEREGISTER") command
+// to a specified client.
+// C++ header
+
+#ifndef _RTSP_REGISTER_SENDER_HH
+#define _RTSP_REGISTER_SENDER_HH
+
+#ifndef _RTSP_CLIENT_HH
+#include "RTSPClient.hh"
+#endif
+
+class RTSPRegisterOrDeregisterSender: public RTSPClient {
+public:
+  virtual ~RTSPRegisterOrDeregisterSender();
+protected: // we're a virtual base class
+  RTSPRegisterOrDeregisterSender(UsageEnvironment& env,
+				 char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum,
+				 Authenticator* authenticator,
+				 int verbosityLevel, char const* applicationName);
+
+public: // Some compilers complain if this is "protected:"
+  // A subclass of "RTSPClient::RequestRecord", specific to our "REGISTER" and "DEREGISTER" commands:
+  class RequestRecord_REGISTER_or_DEREGISTER: public RTSPClient::RequestRecord {
+  public:
+    RequestRecord_REGISTER_or_DEREGISTER(unsigned cseq, char const* cmdName, RTSPClient::responseHandler* rtspResponseHandler, char const* rtspURLToRegisterOrDeregister, char const* proxyURLSuffix);
+    virtual ~RequestRecord_REGISTER_or_DEREGISTER();
+
+    char const* proxyURLSuffix() const { return fProxyURLSuffix; }
+
+  protected:
+    char* fRTSPURLToRegisterOrDeregister;
+    char* fProxyURLSuffix;
+  };
+
+protected:
+  portNumBits fRemoteClientPortNum;
+};
+
+//////////
+
+class RTSPRegisterSender: public RTSPRegisterOrDeregisterSender {
+public:
+  static RTSPRegisterSender*
+  createNew(UsageEnvironment& env,
+	    char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum, char const* rtspURLToRegister,
+	    RTSPClient::responseHandler* rtspResponseHandler, Authenticator* authenticator = NULL,
+	    Boolean requestStreamingViaTCP = False, char const* proxyURLSuffix = NULL, Boolean reuseConnection = False,
+	    int verbosityLevel = 0, char const* applicationName = NULL);
+
+  void grabConnection(int& sock, struct sockaddr_in& remoteAddress); // so that the socket doesn't get closed when we're deleted
+
+protected:
+  RTSPRegisterSender(UsageEnvironment& env,
+		     char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum, char const* rtspURLToRegister,
+		     RTSPClient::responseHandler* rtspResponseHandler, Authenticator* authenticator,
+		     Boolean requestStreamingViaTCP, char const* proxyURLSuffix, Boolean reuseConnection,
+		     int verbosityLevel, char const* applicationName);
+    // called only by "createNew()"
+  virtual ~RTSPRegisterSender();
+
+  // Redefined virtual functions:
+  virtual Boolean setRequestFields(RequestRecord* request,
+                                   char*& cmdURL, Boolean& cmdURLWasAllocated,
+                                   char const*& protocolStr,
+                                   char*& extraHeaders, Boolean& extraHeadersWereAllocated);
+
+public: // Some compilers complain if this is "protected:"
+  // A subclass of "RequestRecord_REGISTER_or_DEREGISTER", specific to our "REGISTER" command:
+  class RequestRecord_REGISTER: public RTSPRegisterOrDeregisterSender::RequestRecord_REGISTER_or_DEREGISTER {
+  public:
+    RequestRecord_REGISTER(unsigned cseq, RTSPClient::responseHandler* rtspResponseHandler, char const* rtspURLToRegister,
+			   Boolean reuseConnection, Boolean requestStreamingViaTCP, char const* proxyURLSuffix);
+    virtual ~RequestRecord_REGISTER();
+
+    char const* rtspURLToRegister() const { return fRTSPURLToRegisterOrDeregister; }
+    Boolean reuseConnection() const { return fReuseConnection; }
+    Boolean requestStreamingViaTCP() const { return fRequestStreamingViaTCP; }
+
+  private:
+    Boolean fReuseConnection, fRequestStreamingViaTCP;
+  };
+};
+
+//////////
+
+class RTSPDeregisterSender: public RTSPRegisterOrDeregisterSender {
+public:
+  static RTSPDeregisterSender*
+  createNew(UsageEnvironment& env,
+	    char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum, char const* rtspURLToDeregister,
+	    RTSPClient::responseHandler* rtspResponseHandler, Authenticator* authenticator = NULL,
+	    char const* proxyURLSuffix = NULL,
+	    int verbosityLevel = 0, char const* applicationName = NULL);
+
+protected:
+  RTSPDeregisterSender(UsageEnvironment& env,
+		       char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum, char const* rtspURLToDeregister,
+		     RTSPClient::responseHandler* rtspResponseHandler, Authenticator* authenticator,
+		     char const* proxyURLSuffix,
+		     int verbosityLevel, char const* applicationName);
+    // called only by "createNew()"
+  virtual ~RTSPDeregisterSender();
+
+  // Redefined virtual functions:
+  virtual Boolean setRequestFields(RequestRecord* request,
+                                   char*& cmdURL, Boolean& cmdURLWasAllocated,
+                                   char const*& protocolStr,
+                                   char*& extraHeaders, Boolean& extraHeadersWereAllocated);
+
+public: // Some compilers complain if this is "protected:"
+  // A subclass of "RequestRecord_REGISTER_or_DEREGISTER", specific to our "DEREGISTER" command:
+  class RequestRecord_DEREGISTER: public RTSPRegisterOrDeregisterSender::RequestRecord_REGISTER_or_DEREGISTER {
+  public:
+    RequestRecord_DEREGISTER(unsigned cseq, RTSPClient::responseHandler* rtspResponseHandler, char const* rtspURLToDeregister, char const* proxyURLSuffix);
+    virtual ~RequestRecord_DEREGISTER();
+
+    char const* rtspURLToDeregister() const { return fRTSPURLToRegisterOrDeregister; }
+  };
+};
+
+#endif
diff --git a/liveMedia/include/RTSPServer.hh b/liveMedia/include/RTSPServer.hh
new file mode 100644
index 0000000..313aec0
--- /dev/null
+++ b/liveMedia/include/RTSPServer.hh
@@ -0,0 +1,353 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A RTSP server
+// C++ header
+
+#ifndef _RTSP_SERVER_HH
+#define _RTSP_SERVER_HH
+
+#ifndef _GENERIC_MEDIA_SERVER_HH
+#include "GenericMediaServer.hh"
+#endif
+#ifndef _DIGEST_AUTHENTICATION_HH
+#include "DigestAuthentication.hh"
+#endif
+
+class RTSPServer: public GenericMediaServer {
+public:
+  static RTSPServer* createNew(UsageEnvironment& env, Port ourPort = 554,
+			       UserAuthenticationDatabase* authDatabase = NULL,
+			       unsigned reclamationSeconds = 65);
+      // If ourPort.num() == 0, we'll choose the port number
+      // Note: The caller is responsible for reclaiming "authDatabase"
+      // If "reclamationSeconds" > 0, then the "RTSPClientSession" state for
+      //     each client will get reclaimed (and the corresponding RTP stream(s)
+      //     torn down) if no RTSP commands - or RTCP "RR" packets - from the
+      //     client are received in at least "reclamationSeconds" seconds.
+
+  static Boolean lookupByName(UsageEnvironment& env, char const* name,
+			      RTSPServer*& resultServer);
+
+  typedef void (responseHandlerForREGISTER)(RTSPServer* rtspServer, unsigned requestId, int resultCode, char* resultString);
+  unsigned registerStream(ServerMediaSession* serverMediaSession,
+			  char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum,
+			  responseHandlerForREGISTER* responseHandler,
+			  char const* username = NULL, char const* password = NULL,
+			  Boolean receiveOurStreamViaTCP = False,
+			  char const* proxyURLSuffix = NULL);
+  // 'Register' the stream represented by "serverMediaSession" with the given remote client (specifed by name and port number).
+  // This is done using our custom "REGISTER" RTSP command.
+  // The function returns a unique number that can be used to identify the request; this number is also passed to "responseHandler".
+  // When a response is received from the remote client (or the "REGISTER" request fails), the specified response handler
+  //   (if non-NULL) is called.  (Note that the "resultString" passed to the handler was dynamically allocated,
+  //   and should be delete[]d by the handler after use.)
+  // If "receiveOurStreamViaTCP" is True, then we're requesting that the remote client access our stream using RTP/RTCP-over-TCP.
+  //   (Otherwise, the remote client may choose regular RTP/RTCP-over-UDP streaming.)
+  // "proxyURLSuffix" (optional) is used only when the remote client is also a proxy server.
+  //   It tells the proxy server the suffix that it should use in its "rtsp://" URL (when front-end clients access the stream)
+
+  typedef void (responseHandlerForDEREGISTER)(RTSPServer* rtspServer, unsigned requestId, int resultCode, char* resultString);
+  unsigned deregisterStream(ServerMediaSession* serverMediaSession,
+			    char const* remoteClientNameOrAddress, portNumBits remoteClientPortNum,
+			    responseHandlerForDEREGISTER* responseHandler,
+			    char const* username = NULL, char const* password = NULL,
+			    char const* proxyURLSuffix = NULL);
+  // Used to turn off a previous "registerStream()" - using our custom "DEREGISTER" RTSP command.
+  
+  char* rtspURL(ServerMediaSession const* serverMediaSession, int clientSocket = -1) const;
+      // returns a "rtsp://" URL that could be used to access the
+      // specified session (which must already have been added to
+      // us using "addServerMediaSession()".
+      // This string is dynamically allocated; caller should delete[]
+      // (If "clientSocket" is non-negative, then it is used (by calling "getsockname()") to determine
+      //  the IP address to be used in the URL.)
+  char* rtspURLPrefix(int clientSocket = -1) const;
+      // like "rtspURL()", except that it returns just the common prefix used by
+      // each session's "rtsp://" URL.
+      // This string is dynamically allocated; caller should delete[]
+
+  UserAuthenticationDatabase* setAuthenticationDatabase(UserAuthenticationDatabase* newDB);
+      // Changes the server's authentication database to "newDB", returning a pointer to the old database (if there was one).
+      // "newDB" may be NULL (you can use this to disable authentication at runtime, if desired).
+
+  void disableStreamingRTPOverTCP() {
+    fAllowStreamingRTPOverTCP = False;
+  }
+
+  Boolean setUpTunnelingOverHTTP(Port httpPort);
+      // (Attempts to) enable RTSP-over-HTTP tunneling on the specified port.
+      // Returns True iff the specified port can be used in this way (i.e., it's not already being used for a separate HTTP server).
+      // Note: RTSP-over-HTTP tunneling is described in
+      //  http://mirror.informatimago.com/next/developer.apple.com/quicktime/icefloe/dispatch028.html
+      //  and http://images.apple.com/br/quicktime/pdf/QTSS_Modules.pdf
+  portNumBits httpServerPortNum() const; // in host byte order.  (Returns 0 if not present.)
+
+protected:
+  RTSPServer(UsageEnvironment& env,
+	     int ourSocket, Port ourPort,
+	     UserAuthenticationDatabase* authDatabase,
+	     unsigned reclamationSeconds);
+      // called only by createNew();
+  virtual ~RTSPServer();
+
+  virtual char const* allowedCommandNames(); // used to implement "RTSPClientConnection::handleCmd_OPTIONS()"
+  virtual Boolean weImplementREGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+				      char const* proxyURLSuffix, char*& responseStr);
+      // used to implement "RTSPClientConnection::handleCmd_REGISTER()"
+      // Note: "responseStr" is dynamically allocated (or NULL), and should be delete[]d after the call
+  virtual void implementCmd_REGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+				     char const* url, char const* urlSuffix, int socketToRemoteServer,
+				     Boolean deliverViaTCP, char const* proxyURLSuffix);
+      // used to implement "RTSPClientConnection::handleCmd_REGISTER()"
+
+  virtual UserAuthenticationDatabase* getAuthenticationDatabaseForCommand(char const* cmdName);
+  virtual Boolean specialClientAccessCheck(int clientSocket, struct sockaddr_in& clientAddr,
+					   char const* urlSuffix);
+      // a hook that allows subclassed servers to do server-specific access checking
+      // on each client (e.g., based on client IP address), without using digest authentication.
+  virtual Boolean specialClientUserAccessCheck(int clientSocket, struct sockaddr_in& clientAddr,
+					       char const* urlSuffix, char const *username);
+      // another hook that allows subclassed servers to do server-specific access checking
+      // - this time after normal digest authentication has already taken place (and would otherwise allow access).
+      // (This test can only be used to further restrict access, not to grant additional access.)
+
+private: // redefined virtual functions
+  virtual Boolean isRTSPServer() const;
+
+public: // should be protected, but some old compilers complain otherwise
+  // The state of a TCP connection used by a RTSP client:
+  class RTSPClientSession; // forward
+  class RTSPClientConnection: public GenericMediaServer::ClientConnection {
+  public:
+    // A data structure that's used to implement the "REGISTER" command:
+    class ParamsForREGISTER {
+    public:
+      ParamsForREGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+			RTSPClientConnection* ourConnection, char const* url, char const* urlSuffix,
+			Boolean reuseConnection, Boolean deliverViaTCP, char const* proxyURLSuffix);
+      virtual ~ParamsForREGISTER();
+    private:
+      friend class RTSPClientConnection;
+      char const* fCmd;
+      RTSPClientConnection* fOurConnection;
+      char* fURL;
+      char* fURLSuffix;
+      Boolean fReuseConnection, fDeliverViaTCP;
+      char* fProxyURLSuffix;
+    };
+  protected: // redefined virtual functions:
+    virtual void handleRequestBytes(int newBytesRead);
+
+  protected:
+    RTSPClientConnection(RTSPServer& ourServer, int clientSocket, struct sockaddr_in clientAddr);
+    virtual ~RTSPClientConnection();
+
+    friend class RTSPServer;
+    friend class RTSPClientSession;
+
+    // Make the handler functions for each command virtual, to allow subclasses to reimplement them, if necessary:
+    virtual void handleCmd_OPTIONS();
+        // You probably won't need to subclass/reimplement this function; reimplement "RTSPServer::allowedCommandNames()" instead.
+    virtual void handleCmd_GET_PARAMETER(char const* fullRequestStr); // when operating on the entire server
+    virtual void handleCmd_SET_PARAMETER(char const* fullRequestStr); // when operating on the entire server
+    virtual void handleCmd_DESCRIBE(char const* urlPreSuffix, char const* urlSuffix, char const* fullRequestStr);
+    virtual void handleCmd_REGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+				    char const* url, char const* urlSuffix, char const* fullRequestStr,
+				    Boolean reuseConnection, Boolean deliverViaTCP, char const* proxyURLSuffix);
+        // You probably won't need to subclass/reimplement this function;
+        //     reimplement "RTSPServer::weImplementREGISTER()" and "RTSPServer::implementCmd_REGISTER()" instead.
+    virtual void handleCmd_bad();
+    virtual void handleCmd_notSupported();
+    virtual void handleCmd_notFound();
+    virtual void handleCmd_sessionNotFound();
+    virtual void handleCmd_unsupportedTransport();
+    // Support for optional RTSP-over-HTTP tunneling:
+    virtual Boolean parseHTTPRequestString(char* resultCmdName, unsigned resultCmdNameMaxSize,
+					   char* urlSuffix, unsigned urlSuffixMaxSize,
+					   char* sessionCookie, unsigned sessionCookieMaxSize,
+					   char* acceptStr, unsigned acceptStrMaxSize);
+    virtual void handleHTTPCmd_notSupported();
+    virtual void handleHTTPCmd_notFound();
+    virtual void handleHTTPCmd_OPTIONS();
+    virtual void handleHTTPCmd_TunnelingGET(char const* sessionCookie);
+    virtual Boolean handleHTTPCmd_TunnelingPOST(char const* sessionCookie, unsigned char const* extraData, unsigned extraDataSize);
+    virtual void handleHTTPCmd_StreamingGET(char const* urlSuffix, char const* fullRequestStr);
+  protected:
+    void resetRequestBuffer();
+    void closeSocketsRTSP();
+    static void handleAlternativeRequestByte(void*, u_int8_t requestByte);
+    void handleAlternativeRequestByte1(u_int8_t requestByte);
+    Boolean authenticationOK(char const* cmdName, char const* urlSuffix, char const* fullRequestStr);
+    void changeClientInputSocket(int newSocketNum, unsigned char const* extraData, unsigned extraDataSize);
+      // used to implement RTSP-over-HTTP tunneling
+    static void continueHandlingREGISTER(ParamsForREGISTER* params);
+    virtual void continueHandlingREGISTER1(ParamsForREGISTER* params);
+
+    // Shortcuts for setting up a RTSP response (prior to sending it):
+    void setRTSPResponse(char const* responseStr);
+    void setRTSPResponse(char const* responseStr, u_int32_t sessionId);
+    void setRTSPResponse(char const* responseStr, char const* contentStr);
+    void setRTSPResponse(char const* responseStr, u_int32_t sessionId, char const* contentStr);
+
+    RTSPServer& fOurRTSPServer; // same as ::fOurServer
+    int& fClientInputSocket; // aliased to ::fOurSocket
+    int fClientOutputSocket;
+    Boolean fIsActive;
+    unsigned char* fLastCRLF;
+    unsigned fRecursionCount;
+    char const* fCurrentCSeq;
+    Authenticator fCurrentAuthenticator; // used if access control is needed
+    char* fOurSessionCookie; // used for optional RTSP-over-HTTP tunneling
+    unsigned fBase64RemainderCount; // used for optional RTSP-over-HTTP tunneling (possible values: 0,1,2,3)
+  };
+
+  // The state of an individual client session (using one or more sequential TCP connections) handled by a RTSP server:
+  class RTSPClientSession: public GenericMediaServer::ClientSession {
+  protected:
+    RTSPClientSession(RTSPServer& ourServer, u_int32_t sessionId);
+    virtual ~RTSPClientSession();
+
+    friend class RTSPServer;
+    friend class RTSPClientConnection;
+    // Make the handler functions for each command virtual, to allow subclasses to redefine them:
+    virtual void handleCmd_SETUP(RTSPClientConnection* ourClientConnection,
+				 char const* urlPreSuffix, char const* urlSuffix, char const* fullRequestStr);
+    virtual void handleCmd_withinSession(RTSPClientConnection* ourClientConnection,
+					 char const* cmdName,
+					 char const* urlPreSuffix, char const* urlSuffix,
+					 char const* fullRequestStr);
+    virtual void handleCmd_TEARDOWN(RTSPClientConnection* ourClientConnection,
+				    ServerMediaSubsession* subsession);
+    virtual void handleCmd_PLAY(RTSPClientConnection* ourClientConnection,
+				ServerMediaSubsession* subsession, char const* fullRequestStr);
+    virtual void handleCmd_PAUSE(RTSPClientConnection* ourClientConnection,
+				 ServerMediaSubsession* subsession);
+    virtual void handleCmd_GET_PARAMETER(RTSPClientConnection* ourClientConnection,
+					 ServerMediaSubsession* subsession, char const* fullRequestStr);
+    virtual void handleCmd_SET_PARAMETER(RTSPClientConnection* ourClientConnection,
+					 ServerMediaSubsession* subsession, char const* fullRequestStr);
+  protected:
+    void deleteStreamByTrack(unsigned trackNum);
+    void reclaimStreamStates();
+    Boolean isMulticast() const { return fIsMulticast; }
+
+    // Shortcuts for setting up a RTSP response (prior to sending it):
+    void setRTSPResponse(RTSPClientConnection* ourClientConnection, char const* responseStr) { ourClientConnection->setRTSPResponse(responseStr); }
+    void setRTSPResponse(RTSPClientConnection* ourClientConnection, char const* responseStr, u_int32_t sessionId) { ourClientConnection->setRTSPResponse(responseStr, sessionId); }
+    void setRTSPResponse(RTSPClientConnection* ourClientConnection, char const* responseStr, char const* contentStr) { ourClientConnection->setRTSPResponse(responseStr, contentStr); }
+    void setRTSPResponse(RTSPClientConnection* ourClientConnection, char const* responseStr, u_int32_t sessionId, char const* contentStr) { ourClientConnection->setRTSPResponse(responseStr, sessionId, contentStr); }
+
+  protected:
+    RTSPServer& fOurRTSPServer; // same as ::fOurServer
+    Boolean fIsMulticast, fStreamAfterSETUP;
+    unsigned char fTCPStreamIdCount; // used for (optional) RTP/TCP
+    Boolean usesTCPTransport() const { return fTCPStreamIdCount > 0; }
+    unsigned fNumStreamStates;
+    struct streamState {
+      ServerMediaSubsession* subsession;
+      int tcpSocketNum;
+      void* streamToken;
+    } * fStreamStates;
+  };
+
+protected: // redefined virtual functions
+  // If you subclass "RTSPClientConnection", then you must also redefine this virtual function in order
+  // to create new objects of your subclass:
+  virtual ClientConnection* createNewClientConnection(int clientSocket, struct sockaddr_in clientAddr);
+
+protected:
+  // If you subclass "RTSPClientSession", then you must also redefine this virtual function in order
+  // to create new objects of your subclass:
+  virtual ClientSession* createNewClientSession(u_int32_t sessionId);
+
+private:
+  static void incomingConnectionHandlerHTTP(void*, int /*mask*/);
+  void incomingConnectionHandlerHTTP();
+
+  void noteTCPStreamingOnSocket(int socketNum, RTSPClientSession* clientSession, unsigned trackNum);
+  void unnoteTCPStreamingOnSocket(int socketNum, RTSPClientSession* clientSession, unsigned trackNum);
+  void stopTCPStreamingOnSocket(int socketNum);
+
+private:
+  friend class RTSPClientConnection;
+  friend class RTSPClientSession;
+  friend class RegisterRequestRecord;
+  friend class DeregisterRequestRecord;
+  int fHTTPServerSocket; // for optional RTSP-over-HTTP tunneling
+  Port fHTTPServerPort; // ditto
+  HashTable* fClientConnectionsForHTTPTunneling; // maps client-supplied 'session cookie' strings to "RTSPClientConnection"s
+    // (used only for optional RTSP-over-HTTP tunneling)
+  HashTable* fTCPStreamingDatabase;
+    // maps TCP socket numbers to ids of sessions that are streaming over it (RTP/RTCP-over-TCP)
+  HashTable* fPendingRegisterOrDeregisterRequests;
+  unsigned fRegisterOrDeregisterRequestCounter;
+  UserAuthenticationDatabase* fAuthDB;
+  Boolean fAllowStreamingRTPOverTCP; // by default, True
+};
+
+
+////////// A subclass of "RTSPServer" that implements the "REGISTER" command to set up proxying on the specified URL //////////
+
+class RTSPServerWithREGISTERProxying: public RTSPServer {
+public:
+  static RTSPServerWithREGISTERProxying* createNew(UsageEnvironment& env, Port ourPort = 554,
+						   UserAuthenticationDatabase* authDatabase = NULL,
+						   UserAuthenticationDatabase* authDatabaseForREGISTER = NULL,
+						   unsigned reclamationSeconds = 65,
+						   Boolean streamRTPOverTCP = False,
+						   int verbosityLevelForProxying = 0,
+						   char const* backEndUsername = NULL,
+						   char const* backEndPassword = NULL);
+
+protected:
+  RTSPServerWithREGISTERProxying(UsageEnvironment& env, int ourSocket, Port ourPort,
+				 UserAuthenticationDatabase* authDatabase, UserAuthenticationDatabase* authDatabaseForREGISTER,
+				 unsigned reclamationSeconds,
+				 Boolean streamRTPOverTCP, int verbosityLevelForProxying,
+				 char const* backEndUsername, char const* backEndPassword);
+  // called only by createNew();
+  virtual ~RTSPServerWithREGISTERProxying();
+
+protected: // redefined virtual functions
+  virtual char const* allowedCommandNames();
+  virtual Boolean weImplementREGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+				      char const* proxyURLSuffix, char*& responseStr);
+  virtual void implementCmd_REGISTER(char const* cmd/*"REGISTER" or "DEREGISTER"*/,
+				     char const* url, char const* urlSuffix, int socketToRemoteServer,
+				     Boolean deliverViaTCP, char const* proxyURLSuffix);
+  virtual UserAuthenticationDatabase* getAuthenticationDatabaseForCommand(char const* cmdName);
+
+private:
+  Boolean fStreamRTPOverTCP;
+  int fVerbosityLevelForProxying;
+  unsigned fRegisteredProxyCounter;
+  char* fAllowedCommandNames;
+  UserAuthenticationDatabase* fAuthDBForREGISTER;
+  char* fBackEndUsername;
+  char* fBackEndPassword;
+}; 
+
+
+// A special version of "parseTransportHeader()", used just for parsing the "Transport:" header
+// in an incoming "REGISTER" command:
+void parseTransportHeaderForREGISTER(char const* buf, // in
+				     Boolean &reuseConnection, // out
+				     Boolean& deliverViaTCP, // out
+				     char*& proxyURLSuffix); // out
+
+#endif
diff --git a/liveMedia/include/RTSPServerSupportingHTTPStreaming.hh b/liveMedia/include/RTSPServerSupportingHTTPStreaming.hh
new file mode 100644
index 0000000..0e08d2d
--- /dev/null
+++ b/liveMedia/include/RTSPServerSupportingHTTPStreaming.hh
@@ -0,0 +1,73 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A server that supports both RTSP, and HTTP streaming (using Apple's "HTTP Live Streaming" protocol)
+// C++ header
+
+#ifndef _RTSP_SERVER_SUPPORTING_HTTP_STREAMING_HH
+#define _RTSP_SERVER_SUPPORTING_HTTP_STREAMING_HH
+
+#ifndef _RTSP_SERVER_HH
+#include "RTSPServer.hh"
+#endif
+#ifndef _BYTE_STREAM_MEMORY_BUFFER_SOURCE_HH
+#include "ByteStreamMemoryBufferSource.hh"
+#endif
+#ifndef _TCP_STREAM_SINK_HH
+#include "TCPStreamSink.hh"
+#endif
+
+class RTSPServerSupportingHTTPStreaming: public RTSPServer {
+public:
+  static RTSPServerSupportingHTTPStreaming* createNew(UsageEnvironment& env, Port rtspPort = 554,
+						      UserAuthenticationDatabase* authDatabase = NULL,
+						      unsigned reclamationTestSeconds = 65);
+
+  Boolean setHTTPPort(Port httpPort) { return setUpTunnelingOverHTTP(httpPort); }
+
+protected:
+  RTSPServerSupportingHTTPStreaming(UsageEnvironment& env,
+				    int ourSocket, Port ourPort,
+				    UserAuthenticationDatabase* authDatabase,
+				    unsigned reclamationTestSeconds);
+      // called only by createNew();
+  virtual ~RTSPServerSupportingHTTPStreaming();
+
+protected: // redefined virtual functions
+  virtual ClientConnection* createNewClientConnection(int clientSocket, struct sockaddr_in clientAddr);
+
+public: // should be protected, but some old compilers complain otherwise
+  class RTSPClientConnectionSupportingHTTPStreaming: public RTSPServer::RTSPClientConnection {
+  public:
+    RTSPClientConnectionSupportingHTTPStreaming(RTSPServer& ourServer, int clientSocket, struct sockaddr_in clientAddr);
+    virtual ~RTSPClientConnectionSupportingHTTPStreaming();
+
+  protected: // redefined virtual functions
+    virtual void handleHTTPCmd_StreamingGET(char const* urlSuffix, char const* fullRequestStr);
+
+  protected:
+    static void afterStreaming(void* clientData);
+
+  private:
+    u_int32_t fClientSessionId;
+    FramedSource* fStreamSource;
+    ByteStreamMemoryBufferSource* fPlaylistSource;
+    TCPStreamSink* fTCPSink;
+  };
+};
+
+#endif
diff --git a/liveMedia/include/RawVideoRTPSink.hh b/liveMedia/include/RawVideoRTPSink.hh
new file mode 100644
index 0000000..455c6c7
--- /dev/null
+++ b/liveMedia/include/RawVideoRTPSink.hh
@@ -0,0 +1,85 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for Raw video
+// C++ header
+
+#ifndef _RAW_VIDEO_RTP_SINK_HH
+#define _RAW_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+
+////////// FrameParameters //////////
+
+struct FrameParameters {
+  u_int16_t pGroupSize;
+  u_int16_t nbOfPixelInPGroup;
+  u_int32_t scanLineSize ;
+  u_int32_t frameSize;
+  u_int16_t scanLineIterationStep;
+};
+
+
+class RawVideoRTPSink: public VideoRTPSink {
+public:
+  static RawVideoRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+        // The following headers provide the 'configuration' information, for the SDP description:
+        unsigned height, unsigned width, unsigned depth,
+        char const* sampling, char const* colorimetry = "BT709-2");
+
+protected:
+  RawVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+                  u_int8_t rtpPayloadFormat,
+                  unsigned height, unsigned width, unsigned depth,
+                  char const* sampling, char const* colorimetry = "BT709-2");
+  // called only by createNew()
+  
+  virtual ~RawVideoRTPSink();
+  
+private: // redefined virtual functions:
+  virtual char const* auxSDPLine(); // for the "a=fmtp:" SDP line
+  
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                      unsigned char* frameStart,
+                      unsigned numBytesInFrame,
+                      struct timeval framePresentationTime,
+                      unsigned numRemainingBytes);
+  virtual Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+                         unsigned numBytesInFrame) const;
+  virtual unsigned specialHeaderSize() const;
+  virtual unsigned computeOverflowForNewFrame(unsigned newFrameSize) const;
+  
+private:
+  char* fFmtpSDPLine;
+  char* fSampling;
+  unsigned fWidth;
+  unsigned fHeight;
+  unsigned fDepth;
+  char* fColorimetry;
+  unsigned fLineindex;
+  FrameParameters fFrameParameters;
+
+  unsigned getNbLineInPacket(unsigned fragOffset, unsigned*& lengths, unsigned*& offsets) const;
+  //  return the number of lines, their lengths and offsets from the fragmentation offset of the whole frame.
+  // call delete[] on lengths and offsets after use of the function
+  void setFrameParameters();
+};
+
+#endif
diff --git a/liveMedia/include/RawVideoRTPSource.hh b/liveMedia/include/RawVideoRTPSource.hh
new file mode 100644
index 0000000..3ee5966
--- /dev/null
+++ b/liveMedia/include/RawVideoRTPSource.hh
@@ -0,0 +1,60 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Raw Video RTP Sources (RFC 4175)
+// C++ header
+
+#ifndef _RAW_VIDEO_RTP_SOURCE_HH
+#define _RAW_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class RawVideoRTPSource: public MultiFramedRTPSource {
+public:
+  static RawVideoRTPSource* createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				      unsigned char rtpPayloadFormat,
+				      unsigned rtpTimestampFrequency);
+
+  u_int16_t currentLineNumber() const; // of the most recently-read/processed scan line
+  u_int8_t currentLineFieldId() const; // of the most recently-read/processed scan line (0 or 1)
+  u_int16_t currentOffsetWithinLine() const; // of the most recently-read/processed scan line
+
+protected:
+  RawVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		    unsigned char rtpPayloadFormat,
+                    unsigned rtpTimestampFrequency = 90000);
+      // called only by createNew()
+
+  virtual ~RawVideoRTPSource();
+
+protected:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  unsigned fNumLines; // in the most recently read packet
+  unsigned fNextLine; // index of the next AU Header to read
+  struct LineHeader* fLineHeaders;
+
+  friend class RawVideoBufferedPacket;
+};
+
+#endif
diff --git a/liveMedia/include/SIPClient.hh b/liveMedia/include/SIPClient.hh
new file mode 100644
index 0000000..e220f2c
--- /dev/null
+++ b/liveMedia/include/SIPClient.hh
@@ -0,0 +1,149 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic SIP client
+// C++ header
+
+#ifndef _SIP_CLIENT_HH
+#define _SIP_CLIENT_HH
+
+#ifndef _MEDIA_SESSION_HH
+#include "MediaSession.hh"
+#endif
+#ifndef _NET_ADDRESS_HH
+#include "NetAddress.hh"
+#endif
+#ifndef _DIGEST_AUTHENTICATION_HH
+#include "DigestAuthentication.hh"
+#endif
+
+// Possible states in the "INVITE" transition diagram (RFC 3261, Figure 5)
+enum inviteClientState { Calling, Proceeding, Completed, Terminated };
+
+class SIPClient: public Medium {
+public:
+  static SIPClient* createNew(UsageEnvironment& env,
+			      unsigned char desiredAudioRTPPayloadFormat,
+			      char const* mimeSubtype = NULL,
+			      int verbosityLevel = 0,
+			      char const* applicationName = NULL);
+
+  void setProxyServer(unsigned proxyServerAddress,
+		      portNumBits proxyServerPortNum);
+
+  void setClientStartPortNum(portNumBits clientStartPortNum) {
+    fClientStartPortNum = clientStartPortNum;
+  }
+
+  char* invite(char const* url, Authenticator* authenticator = NULL);
+      // Issues a SIP "INVITE" command
+      // Returns the session SDP description if this command succeeds
+  char* inviteWithPassword(char const* url,
+			   char const* username, char const* password);
+      // Uses "invite()" to do an "INVITE" - first
+      // without using "password", then (if we get an Unauthorized
+      // response) with an authentication response computed from "password"
+
+  Boolean sendACK(); // on current call
+  Boolean sendBYE(); // on current call
+
+  static Boolean parseSIPURL(UsageEnvironment& env, char const* url,
+			     NetAddress& address, portNumBits& portNum);
+      // (ignores any "<username>[:<password>]@" in "url")
+  static Boolean parseSIPURLUsernamePassword(char const* url,
+					     char*& username,
+					     char*& password);
+  char const* getInviteSdpReply() const { return fInviteSDPDescriptionReturned; }
+
+  void setUserAgentString(char const* userAgentName);
+       // sets an alternative string to be used in SIP "User-Agent:" headers
+
+protected:
+  virtual ~SIPClient();
+
+private:
+  SIPClient(UsageEnvironment& env,
+	    unsigned char desiredAudioRTPPayloadFormat,
+	    char const* mimeSubtype,
+	    int verbosityLevel,
+	    char const* applicationName);
+      // called only by createNew();
+
+  void reset();
+
+  // Routines used to implement invite*():
+  char* invite1(Authenticator* authenticator);
+  Boolean processURL(char const* url);
+  Boolean sendINVITE();
+  static void inviteResponseHandler(void* clientData, int mask);
+  void doInviteStateMachine(unsigned responseCode);
+  void doInviteStateTerminated(unsigned responseCode);
+  TaskToken fTimerA, fTimerB, fTimerD;
+  static void timerAHandler(void* clientData);
+  static void timerBHandler(void* clientData);
+  static void timerDHandler(void* clientData);
+  unsigned const fT1; // in microseconds
+  unsigned fTimerALen; // in microseconds; initially fT1, then doubles
+  unsigned fTimerACount;
+
+  // Routines used to implement all commands:
+  char* createAuthenticatorString(Authenticator const* authenticator,
+				  char const* cmd, char const* url);
+  Boolean sendRequest(char const* requestString, unsigned requestLength);
+  unsigned getResponseCode();
+  unsigned getResponse(char*& responseBuffer, unsigned responseBufferSize);
+  Boolean parseResponseCode(char const* line, unsigned& responseCode);
+
+private:
+  // Set for all calls:
+  unsigned char fDesiredAudioRTPPayloadFormat;
+  char* fMIMESubtype;
+  unsigned fMIMESubtypeSize;
+  int fVerbosityLevel;
+  unsigned fCSeq; // sequence number, used in consecutive requests
+  char const* fApplicationName;
+  unsigned fApplicationNameSize;
+  char const* fOurAddressStr;
+  unsigned fOurAddressStrSize;
+  portNumBits fOurPortNum;
+  Groupsock* fOurSocket;
+  char* fUserAgentHeaderStr;
+  unsigned fUserAgentHeaderStrLen;
+
+  // Set for each call:
+  char const* fURL;
+  unsigned fURLSize;
+  struct in_addr fServerAddress;
+  portNumBits fServerPortNum; // in host order
+  portNumBits fClientStartPortNum; // in host order
+  unsigned fCallId, fFromTag; // set by us
+  char const* fToTagStr; // set by the responder
+  unsigned fToTagStrSize;
+  Authenticator fValidAuthenticator;
+  char const* fUserName; // 'user' name used in "From:" & "Contact:" lines
+  unsigned fUserNameSize;
+
+  char* fInviteSDPDescription;
+  char* fInviteSDPDescriptionReturned;
+  char* fInviteCmd;
+  unsigned fInviteCmdSize;
+  Authenticator* fWorkingAuthenticator;
+  inviteClientState fInviteClientState;
+  char fEventLoopStopFlag;
+};
+
+#endif
diff --git a/liveMedia/include/SRTPCryptographicContext.hh b/liveMedia/include/SRTPCryptographicContext.hh
new file mode 100644
index 0000000..0236c8d
--- /dev/null
+++ b/liveMedia/include/SRTPCryptographicContext.hh
@@ -0,0 +1,142 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// The SRTP 'Cryptographic Context', used in all of our uses of SRTP.
+// Definition
+
+#ifndef _SRTP_CRYPTOGRAPHIC_CONTEXT_HH
+#define _SRTP_CRYPTOGRAPHIC_CONTEXT_HH
+
+#ifndef _MIKEY_HH
+#include "MIKEY.hh"
+#endif
+
+class SRTPCryptographicContext {
+public:
+  SRTPCryptographicContext(MIKEYState const& mikeyState);
+  virtual ~SRTPCryptographicContext();
+
+  // Authenticate (if necessary) and decrypt (if necessary) incoming SRTP and SRTCP packets.
+  // Returns True iff the packet is well-formed and authenticates OK.
+  // ("outPacketSize" will be <= "inPacketSize".)
+  Boolean processIncomingSRTPPacket(u_int8_t* buffer, unsigned inPacketSize,
+				    unsigned& outPacketSize);
+  Boolean processIncomingSRTCPPacket(u_int8_t* buffer, unsigned inPacketSize,
+				     unsigned& outPacketSize);
+
+  // Encrypt (if necessary) and add an authentication tag (if necessary) to an outgoing
+  // RTCP packet.
+  // Returns True iff the packet is well-formed.
+  // ("outPacketSize" will be >= "inPacketSize"; there must be enough space at the end of
+  //  "buffer" for the extra SRTCP tags (4+4+10 bytes).)
+  Boolean processOutgoingSRTCPPacket(u_int8_t* buffer, unsigned inPacketSize,
+				      unsigned& outPacketSize);
+
+#ifndef NO_OPENSSL
+private:
+  // Definitions specific to the "SRTP_AES128_CM_HMAC_SHA1_80" ciphersuite.
+  // Later generalize to support more SRTP ciphersuites #####
+#define SRTP_CIPHER_KEY_LENGTH (128/8) // in bytes
+#define SRTP_CIPHER_SALT_LENGTH (112/8) // in bytes
+#define SRTP_MKI_LENGTH 4 // in bytes
+#define SRTP_AUTH_KEY_LENGTH (160/8) // in bytes
+#define SRTP_AUTH_TAG_LENGTH (80/8) // in bytes
+
+  struct derivedKeys {
+    u_int8_t cipherKey[SRTP_CIPHER_KEY_LENGTH];
+    u_int8_t salt[SRTP_CIPHER_SALT_LENGTH];
+    u_int8_t authKey[SRTP_AUTH_KEY_LENGTH];
+  };
+
+  struct allDerivedKeys {
+    derivedKeys srtp;
+    derivedKeys srtcp;
+  };
+
+  typedef enum {
+		label_srtp_encryption  = 0x00,
+		label_srtp_msg_auth    = 0x01,
+		label_srtp_salt        = 0x02,
+		label_srtcp_encryption = 0x03,
+		label_srtcp_msg_auth   = 0x04,
+		label_srtcp_salt       = 0x05
+  } SRTPKeyDerivationLabel;
+
+  unsigned generateSRTCPAuthenticationTag(u_int8_t const* dataToAuthenticate, unsigned numBytesToAuthenticate,
+					  u_int8_t* resultAuthenticationTag);
+      // returns the size of the resulting authentication tag
+
+  Boolean verifySRTPAuthenticationTag(u_int8_t* dataToAuthenticate, unsigned numBytesToAuthenticate,
+				      u_int32_t roc, u_int8_t const* authenticationTag);
+  Boolean verifySRTCPAuthenticationTag(u_int8_t const* dataToAuthenticate, unsigned numBytesToAuthenticate,
+				       u_int8_t const* authenticationTag);
+
+  void decryptSRTPPacket(u_int64_t index, u_int32_t ssrc, u_int8_t* data, unsigned numDataBytes);
+  void decryptSRTCPPacket(u_int32_t index, u_int32_t ssrc, u_int8_t* data, unsigned numDataBytes);
+
+  void encryptSRTCPPacket(u_int32_t index, u_int32_t ssrc, u_int8_t* data, unsigned numDataBytes);
+
+  unsigned generateAuthenticationTag(derivedKeys& keysToUse,
+				     u_int8_t const* dataToAuthenticate, unsigned numBytesToAuthenticate,
+				     u_int8_t* resultAuthenticationTag);
+      // returns the size of the resulting authentication tag
+      // "resultAuthenticationTag" must point to an array of at least SRTP_AUTH_TAG_LENGTH
+  Boolean verifyAuthenticationTag(derivedKeys& keysToUse,
+				  u_int8_t const* dataToAuthenticate, unsigned numBytesToAuthenticate,
+				  u_int8_t const* authenticationTag);
+
+  void cryptData(derivedKeys& keys, u_int64_t index, u_int32_t ssrc,
+		 u_int8_t* data, unsigned numDataBytes);
+
+  void performKeyDerivation();
+
+  void deriveKeysFromMaster(u_int8_t const* masterKey, u_int8_t const* salt,
+			    allDerivedKeys& allKeysResult);
+      // used to implement "performKeyDerivation()"
+  void deriveSingleKey(u_int8_t const* masterKey, u_int8_t const* salt,
+		       SRTPKeyDerivationLabel label,
+		       unsigned resultKeyLength, u_int8_t* resultKey);
+      // used to implement "deriveKeysFromMaster()".
+      // ("resultKey" must be an existing buffer, of size >= "resultKeyLength")
+
+private:
+  MIKEYState const& fMIKEYState;
+
+  // Master key + salt:
+  u_int8_t const* masterKeyPlusSalt() const { return fMIKEYState.keyData(); }
+
+  u_int8_t const* masterKey() const { return &masterKeyPlusSalt()[0]; }
+  u_int8_t const* masterSalt() const { return &masterKeyPlusSalt()[SRTP_CIPHER_KEY_LENGTH]; }
+
+  Boolean weEncryptSRTP() const { return fMIKEYState.encryptSRTP(); }
+  Boolean weEncryptSRTCP() const { return fMIKEYState.encryptSRTCP(); }
+  Boolean weAuthenticate() const { return fMIKEYState.useAuthentication(); }
+  u_int32_t MKI() const { return fMIKEYState.MKI(); }
+
+  // Derived (i.e., session) keys:
+  allDerivedKeys fDerivedKeys;
+
+  // State used for handling the reception of SRTP packets:
+  Boolean fHaveReceivedSRTPPackets;
+  u_int16_t fPreviousHighRTPSeqNum;
+  u_int32_t fROC; // rollover counter
+
+  // State used for handling the sending of SRTCP packets:
+  u_int32_t fSRTCPIndex;
+#endif
+};
+
+#endif
diff --git a/liveMedia/include/ServerMediaSession.hh b/liveMedia/include/ServerMediaSession.hh
new file mode 100644
index 0000000..51b91ca
--- /dev/null
+++ b/liveMedia/include/ServerMediaSession.hh
@@ -0,0 +1,203 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A data structure that represents a session that consists of
+// potentially multiple (audio and/or video) sub-sessions
+// (This data structure is used for media *streamers* - i.e., servers.
+//  For media receivers, use "MediaSession" instead.)
+// C++ header
+
+#ifndef _SERVER_MEDIA_SESSION_HH
+#define _SERVER_MEDIA_SESSION_HH
+
+#ifndef _RTCP_HH
+#include "RTCP.hh"
+#endif
+
+class ServerMediaSubsession; // forward
+
+class ServerMediaSession: public Medium {
+public:
+  static ServerMediaSession* createNew(UsageEnvironment& env,
+				       char const* streamName = NULL,
+				       char const* info = NULL,
+				       char const* description = NULL,
+				       Boolean isSSM = False,
+				       char const* miscSDPLines = NULL);
+
+  static Boolean lookupByName(UsageEnvironment& env,
+                              char const* mediumName,
+                              ServerMediaSession*& resultSession);
+
+  char* generateSDPDescription(); // based on the entire session
+      // Note: The caller is responsible for freeing the returned string
+
+  char const* streamName() const { return fStreamName; }
+
+  Boolean addSubsession(ServerMediaSubsession* subsession);
+  unsigned numSubsessions() const { return fSubsessionCounter; }
+
+  void testScaleFactor(float& scale); // sets "scale" to the actual supported scale
+  float duration() const;
+    // a result == 0 means an unbounded session (the default)
+    // a result < 0 means: subsession durations differ; the result is -(the largest).
+    // a result > 0 means: this is the duration of a bounded session
+
+  virtual void noteLiveness();
+    // called whenever a client - accessing this media - notes liveness.
+    // The default implementation does nothing, but subclasses can redefine this - e.g., if you
+    // want to remove long-unused "ServerMediaSession"s from the server.
+
+  unsigned referenceCount() const { return fReferenceCount; }
+  void incrementReferenceCount() { ++fReferenceCount; }
+  void decrementReferenceCount() { if (fReferenceCount > 0) --fReferenceCount; }
+  Boolean& deleteWhenUnreferenced() { return fDeleteWhenUnreferenced; }
+
+  void deleteAllSubsessions();
+    // Removes and deletes all subsessions added by "addSubsession()", returning us to an 'empty' state
+    // Note: If you have already added this "ServerMediaSession" to a "RTSPServer" then, before calling this function,
+    //   you must first close any client connections that use it,
+    //   by calling "RTSPServer::closeAllClientSessionsForServerMediaSession()".
+
+protected:
+  ServerMediaSession(UsageEnvironment& env, char const* streamName,
+		     char const* info, char const* description,
+		     Boolean isSSM, char const* miscSDPLines);
+  // called only by "createNew()"
+
+  virtual ~ServerMediaSession();
+
+private: // redefined virtual functions
+  virtual Boolean isServerMediaSession() const;
+
+private:
+  Boolean fIsSSM;
+
+  // Linkage fields:
+  friend class ServerMediaSubsessionIterator;
+  ServerMediaSubsession* fSubsessionsHead;
+  ServerMediaSubsession* fSubsessionsTail;
+  unsigned fSubsessionCounter;
+
+  char* fStreamName;
+  char* fInfoSDPString;
+  char* fDescriptionSDPString;
+  char* fMiscSDPLines;
+  struct timeval fCreationTime;
+  unsigned fReferenceCount;
+  Boolean fDeleteWhenUnreferenced;
+};
+
+
+class ServerMediaSubsessionIterator {
+public:
+  ServerMediaSubsessionIterator(ServerMediaSession& session);
+  virtual ~ServerMediaSubsessionIterator();
+
+  ServerMediaSubsession* next(); // NULL if none
+  void reset();
+
+private:
+  ServerMediaSession& fOurSession;
+  ServerMediaSubsession* fNextPtr;
+};
+
+
+class ServerMediaSubsession: public Medium {
+public:
+  unsigned trackNumber() const { return fTrackNumber; }
+  char const* trackId();
+  virtual char const* sdpLines() = 0;
+  virtual void getStreamParameters(unsigned clientSessionId, // in
+				   netAddressBits clientAddress, // in
+				   Port const& clientRTPPort, // in
+				   Port const& clientRTCPPort, // in
+				   int tcpSocketNum, // in (-1 means use UDP, not TCP)
+				   unsigned char rtpChannelId, // in (used if TCP)
+				   unsigned char rtcpChannelId, // in (used if TCP)
+				   netAddressBits& destinationAddress, // in out
+				   u_int8_t& destinationTTL, // in out
+				   Boolean& isMulticast, // out
+				   Port& serverRTPPort, // out
+				   Port& serverRTCPPort, // out
+				   void*& streamToken // out
+				   ) = 0;
+  virtual void startStream(unsigned clientSessionId, void* streamToken,
+			   TaskFunc* rtcpRRHandler,
+			   void* rtcpRRHandlerClientData,
+			   unsigned short& rtpSeqNum,
+			   unsigned& rtpTimestamp,
+			   ServerRequestAlternativeByteHandler* serverRequestAlternativeByteHandler,
+			   void* serverRequestAlternativeByteHandlerClientData) = 0;
+  virtual void pauseStream(unsigned clientSessionId, void* streamToken);
+  virtual void seekStream(unsigned clientSessionId, void* streamToken, double& seekNPT,
+			  double streamDuration, u_int64_t& numBytes);
+     // This routine is used to seek by relative (i.e., NPT) time.
+     // "streamDuration", if >0.0, specifies how much data to stream, past "seekNPT".  (If <=0.0, all remaining data is streamed.)
+     // "numBytes" returns the size (in bytes) of the data to be streamed, or 0 if unknown or unlimited.
+  virtual void seekStream(unsigned clientSessionId, void* streamToken, char*& absStart, char*& absEnd);
+     // This routine is used to seek by 'absolute' time.
+     // "absStart" should be a string of the form "YYYYMMDDTHHMMSSZ" or "YYYYMMDDTHHMMSS.<frac>Z".
+     // "absEnd" should be either NULL (for no end time), or a string of the same form as "absStart".
+     // These strings may be modified in-place, or can be reassigned to a newly-allocated value (after delete[]ing the original).
+  virtual void nullSeekStream(unsigned clientSessionId, void* streamToken,
+			      double streamEndTime, u_int64_t& numBytes);
+     // Called whenever we're handling a "PLAY" command without a specified start time.
+  virtual void setStreamScale(unsigned clientSessionId, void* streamToken, float scale);
+  virtual float getCurrentNPT(void* streamToken);
+  virtual FramedSource* getStreamSource(void* streamToken);
+  virtual void getRTPSinkandRTCP(void* streamToken,
+				 RTPSink const*& rtpSink, RTCPInstance const*& rtcp) = 0;
+     // Returns pointers to the "RTPSink" and "RTCPInstance" objects for "streamToken".
+     // (This can be useful if you want to get the associated 'Groupsock' objects, for example.)
+     // You must not delete these objects, or start/stop playing them; instead, that is done
+     // using the "startStream()" and "deleteStream()" functions.
+  virtual void deleteStream(unsigned clientSessionId, void*& streamToken);
+
+  virtual void testScaleFactor(float& scale); // sets "scale" to the actual supported scale
+  virtual float duration() const;
+    // returns 0 for an unbounded session (the default)
+    // returns > 0 for a bounded session
+  virtual void getAbsoluteTimeRange(char*& absStartTime, char*& absEndTime) const;
+    // Subclasses can reimplement this iff they support seeking by 'absolute' time.
+
+  // The following may be called by (e.g.) SIP servers, for which the
+  // address and port number fields in SDP descriptions need to be non-zero:
+  void setServerAddressAndPortForSDP(netAddressBits addressBits,
+				     portNumBits portBits);
+
+protected: // we're a virtual base class
+  ServerMediaSubsession(UsageEnvironment& env);
+  virtual ~ServerMediaSubsession();
+
+  char const* rangeSDPLine() const;
+      // returns a string to be delete[]d
+
+  ServerMediaSession* fParentSession;
+  netAddressBits fServerAddressForSDP;
+  portNumBits fPortNumForSDP;
+
+private:
+  friend class ServerMediaSession;
+  friend class ServerMediaSubsessionIterator;
+  ServerMediaSubsession* fNext;
+
+  unsigned fTrackNumber; // within an enclosing ServerMediaSession
+  char const* fTrackId;
+};
+
+#endif
diff --git a/liveMedia/include/SimpleRTPSink.hh b/liveMedia/include/SimpleRTPSink.hh
new file mode 100644
index 0000000..14dfaef
--- /dev/null
+++ b/liveMedia/include/SimpleRTPSink.hh
@@ -0,0 +1,76 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A simple RTP sink that packs frames into each outgoing
+//     packet, without any fragmentation or special headers.
+// C++ header
+
+#ifndef _SIMPLE_RTP_SINK_HH
+#define _SIMPLE_RTP_SINK_HH
+
+#ifndef _MULTI_FRAMED_RTP_SINK_HH
+#include "MultiFramedRTPSink.hh"
+#endif
+
+class SimpleRTPSink: public MultiFramedRTPSink {
+public:
+  static SimpleRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency,
+	    char const* sdpMediaTypeString,
+	    char const* rtpPayloadFormatName,
+	    unsigned numChannels = 1,
+	    Boolean allowMultipleFramesPerPacket = True,
+	    Boolean doNormalMBitRule = True);
+  // "doNormalMBitRule" means: If the medium (i.e., "sdpMediaTypeString") is other than "audio", set the RTP "M" bit
+  // on each outgoing packet iff it contains the last (or only) fragment of a frame.
+  // Otherwise (i.e., if "doNormalMBitRule" is False, or the medium is "audio"), leave the "M" bit unset.
+
+  void setMBitOnNextPacket() { fSetMBitOnNextPacket = True; } // hack for optionally setting the RTP 'M' bit from outside the class
+
+protected:
+  SimpleRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		unsigned char rtpPayloadFormat,
+		unsigned rtpTimestampFrequency,
+		char const* sdpMediaTypeString,
+		char const* rtpPayloadFormatName,
+		unsigned numChannels,
+		Boolean allowMultipleFramesPerPacket,
+		Boolean doNormalMBitRule);
+	// called only by createNew()
+
+  virtual ~SimpleRTPSink();
+
+protected: // redefined virtual functions
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual
+  Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+					 unsigned numBytesInFrame) const;
+  virtual char const* sdpMediaType() const;
+
+private:
+  char const* fSDPMediaTypeString;
+  Boolean fAllowMultipleFramesPerPacket;
+  Boolean fSetMBitOnLastFrames, fSetMBitOnNextPacket;
+};
+
+#endif
diff --git a/liveMedia/include/SimpleRTPSource.hh b/liveMedia/include/SimpleRTPSource.hh
new file mode 100644
index 0000000..693c4b9
--- /dev/null
+++ b/liveMedia/include/SimpleRTPSource.hh
@@ -0,0 +1,65 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A RTP source for a simple RTP payload format that
+//     - doesn't have any special headers following the RTP header
+//       (if necessary, the "offset" parameter can be used to specify a
+//        special header that we just skip over)
+//     - doesn't have any special framing apart from the packet data itself
+// C++ header
+
+#ifndef _SIMPLE_RTP_SOURCE_HH
+#define _SIMPLE_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class SimpleRTPSource: public MultiFramedRTPSource {
+public:
+  static SimpleRTPSource* createNew(UsageEnvironment& env, Groupsock* RTPgs,
+				    unsigned char rtpPayloadFormat,
+				    unsigned rtpTimestampFrequency,
+				    char const* mimeTypeString,
+				    unsigned offset = 0,
+				    Boolean doNormalMBitRule = True);
+  // "doNormalMBitRule" means: If the medium is not audio, use the RTP "M"
+  // bit on each incoming packet to indicate the last (or only) fragment
+  // of a frame.  Otherwise (i.e., if "doNormalMBitRule" is False, or the medium is "audio"), the "M" bit is ignored.
+
+protected:
+  SimpleRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		  unsigned char rtpPayloadFormat,
+		  unsigned rtpTimestampFrequency,
+		  char const* mimeTypeString, unsigned offset,
+		  Boolean doNormalMBitRule);
+      // called only by createNew(), or by subclass constructors
+  virtual ~SimpleRTPSource();
+
+protected:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  char const* fMIMEtypeString;
+  unsigned fOffset;
+  Boolean fUseMBitForFrameEnd;
+};
+
+#endif
diff --git a/liveMedia/include/StreamReplicator.hh b/liveMedia/include/StreamReplicator.hh
new file mode 100644
index 0000000..3427789
--- /dev/null
+++ b/liveMedia/include/StreamReplicator.hh
@@ -0,0 +1,84 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// An class that can be used to create (possibly multiple) 'replicas' of an incoming stream.
+// C++ header
+
+#ifndef _STREAM_REPLICATOR_HH
+#define _STREAM_REPLICATOR_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class StreamReplica; // forward
+
+class StreamReplicator: public Medium {
+public:
+  static StreamReplicator* createNew(UsageEnvironment& env, FramedSource* inputSource, Boolean deleteWhenLastReplicaDies = True);
+    // If "deleteWhenLastReplicaDies" is True (the default), then the "StreamReplicator" object is deleted when (and only when)
+    //   all replicas have been deleted.  (In this case, you must *not* call "Medium::close()" on the "StreamReplicator" object,
+    //   unless you never created any replicas from it to begin with.)
+    // If "deleteWhenLastReplicaDies" is False, then the "StreamReplicator" object remains in existence, even when all replicas
+    //   have been deleted.  (This allows you to create new replicas later, if you wish.)  In this case, you delete the
+    //   "StreamReplicator" object by calling "Medium::close()" on it - but you must do so only when "numReplicas()" returns 0.
+
+  FramedSource* createStreamReplica();
+
+  unsigned numReplicas() const { return fNumReplicas; }
+
+  FramedSource* inputSource() const { return fInputSource; }
+
+  // Call before destruction if you want to prevent the destructor from closing the input source
+  void detachInputSource() { fInputSource = NULL; }
+
+protected:
+  StreamReplicator(UsageEnvironment& env, FramedSource* inputSource, Boolean deleteWhenLastReplicaDies);
+    // called only by "createNew()"
+  virtual ~StreamReplicator();
+
+private:
+  // Routines called by replicas to implement frame delivery, and the stopping/restarting/deletion of replicas:
+  friend class StreamReplica;
+  void getNextFrame(StreamReplica* replica);
+  void deactivateStreamReplica(StreamReplica* replica);
+  void removeStreamReplica(StreamReplica* replica);
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes,
+			 struct timeval presentationTime, unsigned durationInMicroseconds);
+
+  static void onSourceClosure(void* clientData);
+  void onSourceClosure();
+
+  void deliverReceivedFrame();
+
+private:
+  FramedSource* fInputSource;
+  Boolean fDeleteWhenLastReplicaDies, fInputSourceHasClosed; 
+  unsigned fNumReplicas, fNumActiveReplicas, fNumDeliveriesMadeSoFar;
+  int fFrameIndex; // 0 or 1; used to figure out if a replica is requesting the current frame, or the next frame
+
+  StreamReplica* fMasterReplica; // the first replica that requests each frame.  We use its buffer when copying to the others.
+  StreamReplica* fReplicasAwaitingCurrentFrame; // other than the 'master' replica
+  StreamReplica* fReplicasAwaitingNextFrame; // replicas that have already received the current frame, and have asked for the next
+};
+#endif
diff --git a/liveMedia/include/T140TextRTPSink.hh b/liveMedia/include/T140TextRTPSink.hh
new file mode 100644
index 0000000..abe3d28
--- /dev/null
+++ b/liveMedia/include/T140TextRTPSink.hh
@@ -0,0 +1,103 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for T.140 text (RFC 2793)
+// C++ header
+
+#ifndef _T140_TEXT_RTP_SINK_HH
+#define _T140_TEXT_RTP_SINK_HH
+
+#ifndef _TEXT_RTP_SINK_HH
+#include "TextRTPSink.hh"
+#endif
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+class T140IdleFilter;
+
+class T140TextRTPSink: public TextRTPSink {
+public:
+  static T140TextRTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat);
+
+protected:
+  T140TextRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat);
+	// called only by createNew()
+
+  virtual ~T140TextRTPSink();
+
+protected: // redefined virtual functions:
+  virtual Boolean continuePlaying();
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+						 unsigned numBytesInFrame) const;
+
+protected:
+  T140IdleFilter* fOurIdleFilter;
+  Boolean fAreInIdlePeriod;
+};
+
+
+////////// T140IdleFilter definition //////////
+
+// Because the T.140 text RTP payload format specification recommends that (empty) RTP packets be sent during 'idle periods'
+// when no new text is available, we implement "T140TextRTPSink" using a separate "T140IdleFilter" class - sitting in front
+// -  that delivers, to the "T140TextRTPSink", a continuous sequence of (possibly) empty frames.
+// (Note: This class should be used only by "T140TextRTPSink", or a subclass.)
+
+class T140IdleFilter: public FramedFilter {
+public:
+  T140IdleFilter(UsageEnvironment& env, FramedSource* inputSource);
+  virtual ~T140IdleFilter();
+
+private: // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+                                struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame(unsigned frameSize,
+			 unsigned numTruncatedBytes,
+			 struct timeval presentationTime,
+			 unsigned durationInMicroseconds);
+
+  static void handleIdleTimeout(void* clientData);
+  void handleIdleTimeout();
+
+  void deliverFromBuffer();
+  void deliverEmptyFrame();
+
+  static void onSourceClosure(void* clientData);
+  void onSourceClosure();
+
+private:
+  TaskToken fIdleTimerTask;
+  unsigned fBufferSize, fNumBufferedBytes;
+  char* fBuffer;
+  unsigned fBufferedNumTruncatedBytes; // a count of truncated bytes from the upstream
+  struct timeval fBufferedDataPresentationTime;
+  unsigned fBufferedDataDurationInMicroseconds;
+};
+
+#endif
diff --git a/liveMedia/include/TCPStreamSink.hh b/liveMedia/include/TCPStreamSink.hh
new file mode 100644
index 0000000..eb1fdf9
--- /dev/null
+++ b/liveMedia/include/TCPStreamSink.hh
@@ -0,0 +1,67 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A sink representing a TCP output stream
+// C++ header
+
+#ifndef _TCP_STREAM_SINK_HH
+#define _TCP_STREAM_SINK_HH
+
+#ifndef _MEDIA_SINK_HH
+#include "MediaSink.hh"
+#endif
+
+#define TCP_STREAM_SINK_BUFFER_SIZE 10000
+
+class TCPStreamSink: public MediaSink {
+public:
+  static TCPStreamSink* createNew(UsageEnvironment& env, int socketNum);
+  // "socketNum" is the socket number of an existing, writable TCP socket (which should be non-blocking).
+  // The caller is responsible for closing this socket later (when this object no longer exists).
+
+protected:
+  TCPStreamSink(UsageEnvironment& env, int socketNum); // called only by "createNew()"
+  virtual ~TCPStreamSink();
+
+protected:
+  // Redefined virtual functions:
+  virtual Boolean continuePlaying();
+
+private:
+  void processBuffer(); // common routine, called from both the 'socket writable' and 'incoming data' handlers below
+
+  static void socketWritableHandler(void* clientData, int mask);
+  void socketWritableHandler1();
+
+  static void afterGettingFrame(void* clientData, unsigned frameSize, unsigned numTruncatedBytes,
+				struct timeval /*presentationTime*/, unsigned /*durationInMicroseconds*/);
+  void afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes);
+
+  static void ourOnSourceClosure(void* clientData);
+  void ourOnSourceClosure1();
+
+  unsigned numUnwrittenBytes() const { return fUnwrittenBytesEnd - fUnwrittenBytesStart; }
+  unsigned freeBufferSpace() const { return TCP_STREAM_SINK_BUFFER_SIZE - fUnwrittenBytesEnd; }
+
+private:
+  unsigned char fBuffer[TCP_STREAM_SINK_BUFFER_SIZE];
+  unsigned fUnwrittenBytesStart, fUnwrittenBytesEnd;
+  Boolean fInputSourceIsOpen, fOutputSocketIsWritable;
+  int fOutputSocketNum;
+};
+
+#endif
diff --git a/liveMedia/include/TLSState.hh b/liveMedia/include/TLSState.hh
new file mode 100644
index 0000000..e0ac619
--- /dev/null
+++ b/liveMedia/include/TLSState.hh
@@ -0,0 +1,59 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// State encapsulating a TLS connection
+// C++ header
+
+#ifndef _TLS_STATE_HH
+#define _TLS_STATE_HH
+
+#ifndef _NET_COMMON_H
+#include "NetCommon.h"
+#endif
+#ifndef _BOOLEAN_HH
+#include "Boolean.hh"
+#endif
+#ifndef NO_OPENSSL
+#include <openssl/ssl.h>
+#endif
+
+class TLSState {
+public:
+  TLSState(class RTSPClient& client);
+  virtual ~TLSState();
+
+public:
+  Boolean isNeeded;
+
+  int connect(int socketNum); // returns: -1 (unrecoverable error), 0 (pending), 1 (done)
+  int write(const char* data, unsigned count);
+  int read(u_int8_t* buffer, unsigned bufferSize);
+
+private:
+  void reset();
+  Boolean setup(int socketNum);
+
+#ifndef NO_OPENSSL
+private:
+  class RTSPClient& fClient;
+  Boolean fHasBeenSetup;
+  SSL_CTX* fCtx;
+  SSL* fCon;
+#endif
+};
+
+#endif
diff --git a/liveMedia/include/TextRTPSink.hh b/liveMedia/include/TextRTPSink.hh
new file mode 100644
index 0000000..0ecdc04
--- /dev/null
+++ b/liveMedia/include/TextRTPSink.hh
@@ -0,0 +1,41 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic RTP sink for text codecs (abstract base class)
+// C++ header
+
+#ifndef _TEXT_RTP_SINK_HH
+#define _TEXT_RTP_SINK_HH
+
+#ifndef _MULTI_FRAMED_RTP_SINK_HH
+#include "MultiFramedRTPSink.hh"
+#endif
+
+class TextRTPSink: public MultiFramedRTPSink {
+protected:
+  TextRTPSink(UsageEnvironment& env,
+	      Groupsock* rtpgs, unsigned char rtpPayloadType,
+	      unsigned rtpTimestampFrequency,
+	      char const* rtpPayloadFormatName);
+  // (we're an abstract base class)
+  virtual ~TextRTPSink();
+
+private: // redefined virtual functions:
+  virtual char const* sdpMediaType() const;
+};
+
+#endif
diff --git a/liveMedia/include/TheoraVideoRTPSink.hh b/liveMedia/include/TheoraVideoRTPSink.hh
new file mode 100644
index 0000000..8e72a5b
--- /dev/null
+++ b/liveMedia/include/TheoraVideoRTPSink.hh
@@ -0,0 +1,72 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for Theora video
+// C++ header
+
+#ifndef _THEORA_VIDEO_RTP_SINK_HH
+#define _THEORA_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+
+class TheoraVideoRTPSink: public VideoRTPSink {
+public:
+  static TheoraVideoRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+	    // The following headers provide the 'configuration' information, for the SDP description:
+	    u_int8_t* identificationHeader, unsigned identificationHeaderSize,
+	    u_int8_t* commentHeader, unsigned commentHeaderSize,
+	    u_int8_t* setupHeader, unsigned setupHeaderSize,
+	    u_int32_t identField = 0xFACADE);
+  
+  static TheoraVideoRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+            char const* configStr);
+  // an optional variant of "createNew()" that takes a Base-64-encoded 'configuration' string,
+  // rather than the raw configuration headers as parameter.
+
+protected:
+  TheoraVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		     u_int8_t rtpPayloadFormat,
+		     u_int8_t* identificationHeader, unsigned identificationHeaderSize,
+		     u_int8_t* commentHeader, unsigned commentHeaderSize,
+		     u_int8_t* setupHeader, unsigned setupHeaderSize,
+		     u_int32_t identField);
+  // called only by createNew()
+  
+  virtual ~TheoraVideoRTPSink();
+  
+private: // redefined virtual functions:
+  virtual char const* auxSDPLine(); // for the "a=fmtp:" SDP line
+  
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+				      unsigned char* frameStart,
+				      unsigned numBytesInFrame,
+				      struct timeval framePresentationTime,
+				      unsigned numRemainingBytes);
+  virtual Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+						 unsigned numBytesInFrame) const;
+  virtual unsigned specialHeaderSize() const;
+  
+private:
+  u_int32_t fIdent; // "Ident" field used by this stream.  (Only the low 24 bits of this are used.)
+  char* fFmtpSDPLine;
+};
+
+#endif
diff --git a/liveMedia/include/TheoraVideoRTPSource.hh b/liveMedia/include/TheoraVideoRTPSource.hh
new file mode 100644
index 0000000..4dbd20a
--- /dev/null
+++ b/liveMedia/include/TheoraVideoRTPSource.hh
@@ -0,0 +1,53 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Theora Video Audio RTP Sources
+// C++ header
+
+#ifndef _THEORA_VIDEO_RTP_SOURCE_HH
+#define _THEORA_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class TheoraVideoRTPSource: public MultiFramedRTPSource {
+public:
+  static TheoraVideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat);
+
+  u_int32_t curPacketIdent() const { return fCurPacketIdent; } // The current "Ident" field; only the low-order 24 bits are used
+
+protected:
+  TheoraVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		       unsigned char rtpPayloadFormat);
+      // called only by createNew()
+
+  virtual ~TheoraVideoRTPSource();
+
+protected:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  u_int32_t fCurPacketIdent; // only the low-order 24 bits are used
+};
+
+#endif
diff --git a/liveMedia/include/VP8VideoRTPSink.hh b/liveMedia/include/VP8VideoRTPSink.hh
new file mode 100644
index 0000000..9f3012e
--- /dev/null
+++ b/liveMedia/include/VP8VideoRTPSink.hh
@@ -0,0 +1,50 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for VP8 video
+// C++ header
+
+#ifndef _VP8_VIDEO_RTP_SINK_HH
+#define _VP8_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+
+class VP8VideoRTPSink: public VideoRTPSink {
+public:
+  static VP8VideoRTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat);
+
+protected:
+  VP8VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat);
+	// called only by createNew()
+
+  virtual ~VP8VideoRTPSink();
+
+private: // redefined virtual functions:
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual
+  Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+					 unsigned numBytesInFrame) const;
+  virtual unsigned specialHeaderSize() const;
+};
+
+#endif
diff --git a/liveMedia/include/VP8VideoRTPSource.hh b/liveMedia/include/VP8VideoRTPSource.hh
new file mode 100644
index 0000000..cb1d3a5
--- /dev/null
+++ b/liveMedia/include/VP8VideoRTPSource.hh
@@ -0,0 +1,50 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// VP8 Video RTP Sources
+// C++ header
+
+#ifndef _VP8_VIDEO_RTP_SOURCE_HH
+#define _VP8_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class VP8VideoRTPSource: public MultiFramedRTPSource {
+public:
+  static VP8VideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency = 90000);
+
+protected:
+  VP8VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		    unsigned char rtpPayloadFormat,
+		    unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+  virtual ~VP8VideoRTPSource();
+
+protected:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+};
+
+#endif
diff --git a/liveMedia/include/VP9VideoRTPSink.hh b/liveMedia/include/VP9VideoRTPSink.hh
new file mode 100644
index 0000000..ced515a
--- /dev/null
+++ b/liveMedia/include/VP9VideoRTPSink.hh
@@ -0,0 +1,50 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for VP9 video
+// C++ header
+
+#ifndef _VP9_VIDEO_RTP_SINK_HH
+#define _VP9_VIDEO_RTP_SINK_HH
+
+#ifndef _VIDEO_RTP_SINK_HH
+#include "VideoRTPSink.hh"
+#endif
+
+class VP9VideoRTPSink: public VideoRTPSink {
+public:
+  static VP9VideoRTPSink* createNew(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat);
+
+protected:
+  VP9VideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat);
+	// called only by createNew()
+
+  virtual ~VP9VideoRTPSink();
+
+private: // redefined virtual functions:
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual
+  Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+					 unsigned numBytesInFrame) const;
+  virtual unsigned specialHeaderSize() const;
+};
+
+#endif
diff --git a/liveMedia/include/VP9VideoRTPSource.hh b/liveMedia/include/VP9VideoRTPSource.hh
new file mode 100644
index 0000000..a812a28
--- /dev/null
+++ b/liveMedia/include/VP9VideoRTPSource.hh
@@ -0,0 +1,50 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// VP9 Video RTP Sources
+// C++ header
+
+#ifndef _VP9_VIDEO_RTP_SOURCE_HH
+#define _VP9_VIDEO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class VP9VideoRTPSource: public MultiFramedRTPSource {
+public:
+  static VP9VideoRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency = 90000);
+
+protected:
+  VP9VideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		    unsigned char rtpPayloadFormat,
+		    unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+  virtual ~VP9VideoRTPSource();
+
+protected:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+};
+
+#endif
diff --git a/liveMedia/include/VideoRTPSink.hh b/liveMedia/include/VideoRTPSink.hh
new file mode 100644
index 0000000..6511e73
--- /dev/null
+++ b/liveMedia/include/VideoRTPSink.hh
@@ -0,0 +1,41 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A generic RTP sink for video codecs (abstract base class)
+// C++ header
+
+#ifndef _VIDEO_RTP_SINK_HH
+#define _VIDEO_RTP_SINK_HH
+
+#ifndef _MULTI_FRAMED_RTP_SINK_HH
+#include "MultiFramedRTPSink.hh"
+#endif
+
+class VideoRTPSink: public MultiFramedRTPSink {
+protected:
+  VideoRTPSink(UsageEnvironment& env,
+	       Groupsock* rtpgs, unsigned char rtpPayloadType,
+	       unsigned rtpTimestampFrequency,
+	       char const* rtpPayloadFormatName);
+  // (we're an abstract base class)
+  virtual ~VideoRTPSink();
+
+private: // redefined virtual functions:
+  virtual char const* sdpMediaType() const;
+};
+
+#endif
diff --git a/liveMedia/include/VorbisAudioRTPSink.hh b/liveMedia/include/VorbisAudioRTPSink.hh
new file mode 100644
index 0000000..7d3facf
--- /dev/null
+++ b/liveMedia/include/VorbisAudioRTPSink.hh
@@ -0,0 +1,85 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// RTP sink for Vorbis audio
+// C++ header
+
+#ifndef _VORBIS_AUDIO_RTP_SINK_HH
+#define _VORBIS_AUDIO_RTP_SINK_HH
+
+#ifndef _AUDIO_RTP_SINK_HH
+#include "AudioRTPSink.hh"
+#endif
+
+class VorbisAudioRTPSink: public AudioRTPSink {
+public:
+  static VorbisAudioRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+	    u_int32_t rtpTimestampFrequency, unsigned numChannels,
+	    // The following headers provide the 'configuration' information, for the SDP description:
+	    u_int8_t* identificationHeader, unsigned identificationHeaderSize,
+	    u_int8_t* commentHeader, unsigned commentHeaderSize,
+	    u_int8_t* setupHeader, unsigned setupHeaderSize,
+	    u_int32_t identField = 0xFACADE);
+
+  static VorbisAudioRTPSink*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs, u_int8_t rtpPayloadFormat,
+	    u_int32_t rtpTimestampFrequency, unsigned numChannels,
+	    char const* configStr);
+    // an optional variant of "createNew()" that takes a Base-64-encoded 'configuration' string,
+    // rather than the raw configuration headers as parameter.
+
+protected:
+  VorbisAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
+		     u_int8_t rtpPayloadFormat, u_int32_t rtpTimestampFrequency, unsigned numChannels,
+		     u_int8_t* identificationHeader, unsigned identificationHeaderSize,
+		     u_int8_t* commentHeader, unsigned commentHeaderSize,
+		     u_int8_t* setupHeader, unsigned setupHeaderSize,
+		     u_int32_t identField);
+	// called only by createNew()
+
+  virtual ~VorbisAudioRTPSink();
+
+private: // redefined virtual functions:
+  virtual char const* auxSDPLine(); // for the "a=fmtp:" SDP line
+
+  virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
+                                      unsigned char* frameStart,
+                                      unsigned numBytesInFrame,
+                                      struct timeval framePresentationTime,
+                                      unsigned numRemainingBytes);
+  virtual Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
+						 unsigned numBytesInFrame) const;
+  virtual unsigned specialHeaderSize() const;
+  virtual unsigned frameSpecificHeaderSize() const;
+
+private:
+  u_int32_t fIdent; // "Ident" field used by this stream.  (Only the low 24 bits of this are used.)
+  char* fFmtpSDPLine;
+};
+
+
+// A general function used by both "VorbisAudioRTPSink" and "TheoraVideoRTPSink" to construct
+// a Base64-encoded 'config' string (for SDP) from "identification", "comment", "setup" headers.
+// (Note: The result string was heap-allocated, and the caller should delete[] it afterwards.)
+
+char* generateVorbisOrTheoraConfigStr(u_int8_t* identificationHeader, unsigned identificationHeaderSize,
+				      u_int8_t* commentHeader, unsigned commentHeaderSize,
+				      u_int8_t* setupHeader, unsigned setupHeaderSize,
+				      u_int32_t identField);
+
+#endif
diff --git a/liveMedia/include/VorbisAudioRTPSource.hh b/liveMedia/include/VorbisAudioRTPSource.hh
new file mode 100644
index 0000000..8250da8
--- /dev/null
+++ b/liveMedia/include/VorbisAudioRTPSource.hh
@@ -0,0 +1,66 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Vorbis Audio RTP Sources
+// C++ header
+
+#ifndef _VORBIS_AUDIO_RTP_SOURCE_HH
+#define _VORBIS_AUDIO_RTP_SOURCE_HH
+
+#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
+#include "MultiFramedRTPSource.hh"
+#endif
+
+class VorbisAudioRTPSource: public MultiFramedRTPSource {
+public:
+  static VorbisAudioRTPSource*
+  createNew(UsageEnvironment& env, Groupsock* RTPgs,
+	    unsigned char rtpPayloadFormat,
+	    unsigned rtpTimestampFrequency);
+
+  u_int32_t curPacketIdent() const { return fCurPacketIdent; } // The current "Ident" field; only the low-order 24 bits are used
+
+protected:
+  VorbisAudioRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
+		       unsigned char rtpPayloadFormat,
+		       unsigned rtpTimestampFrequency);
+      // called only by createNew()
+
+  virtual ~VorbisAudioRTPSource();
+
+protected:
+  // redefined virtual functions:
+  virtual Boolean processSpecialHeader(BufferedPacket* packet,
+                                       unsigned& resultSpecialHeaderSize);
+  virtual char const* MIMEtype() const;
+
+private:
+  u_int32_t fCurPacketIdent; // only the low-order 24 bits are used
+};
+
+void parseVorbisOrTheoraConfigStr(char const* configStr,
+				  u_int8_t*& identificationHdr, unsigned& identificationHdrSize,
+				  u_int8_t*& commentHdr, unsigned& commentHdrSize,
+				  u_int8_t*& setupHdr, unsigned& setupHdrSize,
+				  u_int32_t& identField);
+    // Returns (in each of the result parameters) unpacked Vorbis or Theora
+    // "identification", "comment", and "setup" headers that were specified in a
+    // "config" string (in the SDP description for a Vorbis/RTP or Theora/RTP stream).
+    // Each of the "*Hdr" result arrays are dynamically allocated by this routine,
+    // and must be delete[]d by the caller.
+
+#endif
diff --git a/liveMedia/include/WAVAudioFileServerMediaSubsession.hh b/liveMedia/include/WAVAudioFileServerMediaSubsession.hh
new file mode 100644
index 0000000..3ffd881
--- /dev/null
+++ b/liveMedia/include/WAVAudioFileServerMediaSubsession.hh
@@ -0,0 +1,68 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
+// on demand, from an WAV audio file.
+// C++ header
+
+#ifndef _WAV_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+#define _WAV_AUDIO_FILE_SERVER_MEDIA_SUBSESSION_HH
+
+#ifndef _FILE_SERVER_MEDIA_SUBSESSION_HH
+#include "FileServerMediaSubsession.hh"
+#endif
+
+class WAVAudioFileServerMediaSubsession: public FileServerMediaSubsession{
+public:
+  static WAVAudioFileServerMediaSubsession*
+  createNew(UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource,
+	    Boolean convertToULaw = False);
+      // If "convertToULaw" is True, 16-bit audio streams are converted to
+      // 8-bit u-law audio prior to streaming.
+
+protected:
+  WAVAudioFileServerMediaSubsession(UsageEnvironment& env, char const* fileName,
+				    Boolean reuseFirstSource, Boolean convertToULaw);
+      // called only by createNew();
+  virtual ~WAVAudioFileServerMediaSubsession();
+
+protected: // redefined virtual functions
+  virtual void seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes);
+  virtual void setStreamSourceScale(FramedSource* inputSource, float scale);
+  virtual void setStreamSourceDuration(FramedSource* inputSource, double streamDuration, u_int64_t& numBytes);
+
+  virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
+					      unsigned& estBitrate);
+  virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
+                                    unsigned char rtpPayloadTypeIfDynamic,
+				    FramedSource* inputSource);
+  virtual void testScaleFactor(float& scale);
+  virtual float duration() const;
+
+protected:
+  Boolean fConvertToULaw;
+
+  // The following parameters of the input stream are set after
+  // "createNewStreamSource" is called:
+  unsigned char fAudioFormat;
+  unsigned char fBitsPerSample;
+  unsigned fSamplingFrequency;
+  unsigned fNumChannels;
+  float fFileDuration;
+};
+
+#endif
diff --git a/liveMedia/include/WAVAudioFileSource.hh b/liveMedia/include/WAVAudioFileSource.hh
new file mode 100644
index 0000000..bffe67b
--- /dev/null
+++ b/liveMedia/include/WAVAudioFileSource.hh
@@ -0,0 +1,86 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// A WAV audio file source
+// NOTE: Samples are returned in little-endian order (the same order in which
+// they were stored in the file).
+// C++ header
+
+#ifndef _WAV_AUDIO_FILE_SOURCE_HH
+#define _WAV_AUDIO_FILE_SOURCE_HH
+
+#ifndef _AUDIO_INPUT_DEVICE_HH
+#include "AudioInputDevice.hh"
+#endif
+
+typedef enum {
+  WA_PCM = 0x01,
+  WA_PCMA = 0x06,
+  WA_PCMU = 0x07,
+  WA_IMA_ADPCM = 0x11,
+  WA_UNKNOWN
+} WAV_AUDIO_FORMAT;
+
+
+class WAVAudioFileSource: public AudioInputDevice {
+public:
+
+  static WAVAudioFileSource* createNew(UsageEnvironment& env,
+					char const* fileName);
+
+  unsigned numPCMBytes() const;
+  void setScaleFactor(int scale);
+  void seekToPCMByte(unsigned byteNumber);
+  void limitNumBytesToStream(unsigned numBytesToStream);
+      // if "numBytesToStream" is >0, then we limit the stream to that number of bytes, before treating it as EOF
+
+  unsigned char getAudioFormat();
+
+protected:
+  WAVAudioFileSource(UsageEnvironment& env, FILE* fid);
+	// called only by createNew()
+
+  virtual ~WAVAudioFileSource();
+
+  static void fileReadableHandler(WAVAudioFileSource* source, int mask);
+  void doReadFromFile();
+
+private:
+  // redefined virtual functions:
+  virtual void doGetNextFrame();
+  virtual void doStopGettingFrames();
+  virtual Boolean setInputPort(int portIndex);
+  virtual double getAverageLevel() const;
+
+protected:
+  unsigned fPreferredFrameSize;
+
+private:
+  FILE* fFid;
+  double fPlayTimePerSample; // useconds
+  Boolean fFidIsSeekable;
+  unsigned fLastPlayTime; // useconds
+  Boolean fHaveStartedReading;
+  unsigned fWAVHeaderSize;
+  unsigned fFileSize;
+  int fScaleFactor;
+  Boolean fLimitNumBytesToStream;
+  unsigned fNumBytesToStream; // used iff "fLimitNumBytesToStream" is True
+  unsigned char fAudioFormat;
+};
+
+#endif
diff --git a/liveMedia/include/liveMedia.hh b/liveMedia/include/liveMedia.hh
new file mode 100644
index 0000000..cb4774d
--- /dev/null
+++ b/liveMedia/include/liveMedia.hh
@@ -0,0 +1,137 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Inclusion of header files representing the interface
+// for the entire library
+//
+// Programs that use the library can include this header file,
+// instead of each of the individual media header files
+
+#ifndef _LIVEMEDIA_HH
+#define _LIVEMEDIA_HH
+#include "JPEG2000VideoRTPSource.hh"
+#include "JPEG2000VideoRTPSink.hh"
+//#include "JPEG2000VideoStreamFramer.hh"
+//#include "JPEG2000VideoFileServerMediaSubsession.hh"
+#include "MPEG1or2AudioRTPSink.hh"
+#include "MP3ADURTPSink.hh"
+#include "MPEG1or2VideoRTPSink.hh"
+#include "MPEG4ESVideoRTPSink.hh"
+#include "AMRAudioFileSink.hh"
+#include "H264VideoFileSink.hh"
+#include "H265VideoFileSink.hh"
+#include "OggFileSink.hh"
+#include "BasicUDPSink.hh"
+#include "GSMAudioRTPSink.hh"
+#include "H263plusVideoRTPSink.hh"
+#include "H264VideoRTPSink.hh"
+#include "H265VideoRTPSink.hh"
+#include "DVVideoRTPSource.hh"
+#include "DVVideoRTPSink.hh"
+#include "DVVideoStreamFramer.hh"
+#include "H264VideoStreamFramer.hh"
+#include "H265VideoStreamFramer.hh"
+#include "H264VideoStreamDiscreteFramer.hh"
+#include "H265VideoStreamDiscreteFramer.hh"
+#include "JPEGVideoRTPSink.hh"
+#include "SimpleRTPSink.hh"
+#include "uLawAudioFilter.hh"
+#include "MPEG2IndexFromTransportStream.hh"
+#include "MPEG2TransportStreamTrickModeFilter.hh"
+#include "ByteStreamMultiFileSource.hh"
+#include "ByteStreamMemoryBufferSource.hh"
+#include "BasicUDPSource.hh"
+#include "SimpleRTPSource.hh"
+#include "MPEG1or2AudioRTPSource.hh"
+#include "MPEG4LATMAudioRTPSource.hh"
+#include "MPEG4LATMAudioRTPSink.hh"
+#include "MPEG4ESVideoRTPSource.hh"
+#include "MPEG4GenericRTPSource.hh"
+#include "MP3ADURTPSource.hh"
+#include "QCELPAudioRTPSource.hh"
+#include "AMRAudioRTPSource.hh"
+#include "JPEGVideoRTPSource.hh"
+#include "JPEGVideoSource.hh"
+#include "MPEG1or2VideoRTPSource.hh"
+#include "VorbisAudioRTPSource.hh"
+#include "TheoraVideoRTPSource.hh"
+#include "VP8VideoRTPSource.hh"
+#include "VP9VideoRTPSource.hh"
+#include "RawVideoRTPSource.hh"
+#include "MPEG2TransportStreamFromPESSource.hh"
+#include "MPEG2TransportStreamFromESSource.hh"
+#include "MPEG2TransportStreamFramer.hh"
+#include "ADTSAudioFileSource.hh"
+#include "H261VideoRTPSource.hh"
+#include "H263plusVideoRTPSource.hh"
+#include "H264VideoRTPSource.hh"
+#include "H265VideoRTPSource.hh"
+#include "MP3FileSource.hh"
+#include "MP3ADU.hh"
+#include "MP3ADUinterleaving.hh"
+#include "MP3Transcoder.hh"
+#include "MPEG1or2DemuxedElementaryStream.hh"
+#include "MPEG1or2AudioStreamFramer.hh"
+#include "H263plusVideoStreamFramer.hh"
+#include "AC3AudioStreamFramer.hh"
+#include "AC3AudioRTPSource.hh"
+#include "AC3AudioRTPSink.hh"
+#include "VorbisAudioRTPSink.hh"
+#include "TheoraVideoRTPSink.hh"
+#include "VP8VideoRTPSink.hh"
+#include "VP9VideoRTPSink.hh"
+#include "MPEG4GenericRTPSink.hh"
+#include "RawVideoRTPSink.hh"
+#include "MPEG1or2VideoStreamDiscreteFramer.hh"
+#include "MPEG4VideoStreamDiscreteFramer.hh"
+#include "DeviceSource.hh"
+#include "AudioInputDevice.hh"
+#include "WAVAudioFileSource.hh"
+#include "StreamReplicator.hh"
+#include "RTSPRegisterSender.hh"
+#include "RTSPServerSupportingHTTPStreaming.hh"
+#include "RTSPClient.hh"
+#include "SIPClient.hh"
+#include "QuickTimeFileSink.hh"
+#include "QuickTimeGenericRTPSource.hh"
+#include "AVIFileSink.hh"
+#include "PassiveServerMediaSubsession.hh"
+#include "MPEG4VideoFileServerMediaSubsession.hh"
+#include "H264VideoFileServerMediaSubsession.hh"
+#include "H265VideoFileServerMediaSubsession.hh"
+#include "WAVAudioFileServerMediaSubsession.hh"
+#include "AMRAudioFileServerMediaSubsession.hh"
+#include "AMRAudioFileSource.hh"
+#include "AMRAudioRTPSink.hh"
+#include "T140TextRTPSink.hh"
+#include "TCPStreamSink.hh"
+#include "MP3AudioFileServerMediaSubsession.hh"
+#include "MPEG1or2VideoFileServerMediaSubsession.hh"
+#include "MPEG1or2FileServerDemux.hh"
+#include "MPEG2TransportFileServerMediaSubsession.hh"
+#include "H263plusVideoFileServerMediaSubsession.hh"
+#include "ADTSAudioFileServerMediaSubsession.hh"
+#include "DVVideoFileServerMediaSubsession.hh"
+#include "AC3AudioFileServerMediaSubsession.hh"
+#include "MPEG2TransportUDPServerMediaSubsession.hh"
+#include "MatroskaFileServerDemux.hh"
+#include "OggFileServerDemux.hh"
+#include "MPEG2TransportStreamDemux.hh"
+#include "ProxyServerMediaSession.hh"
+#include "HLSSegmenter.hh"
+
+#endif
diff --git a/liveMedia/include/liveMedia_version.hh b/liveMedia/include/liveMedia_version.hh
new file mode 100644
index 0000000..6363939
--- /dev/null
+++ b/liveMedia/include/liveMedia_version.hh
@@ -0,0 +1,10 @@
+// Version information for the "liveMedia" library
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+
+#ifndef _LIVEMEDIA_VERSION_HH
+#define _LIVEMEDIA_VERSION_HH
+
+#define LIVEMEDIA_LIBRARY_VERSION_STRING	"2020.03.06"
+#define LIVEMEDIA_LIBRARY_VERSION_INT		1583452800
+
+#endif
diff --git a/liveMedia/include/ourMD5.hh b/liveMedia/include/ourMD5.hh
new file mode 100644
index 0000000..722dcd5
--- /dev/null
+++ b/liveMedia/include/ourMD5.hh
@@ -0,0 +1,38 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Because MD5 may not be implemented (at least, with the same interface) on all systems,
+// we have our own implementation.
+// C++ header
+
+#ifndef _OUR_MD5_HH
+#define _OUR_MD5_HH
+
+extern char* our_MD5Data(unsigned char const* data, unsigned dataSize, char* outputDigest);
+    // "outputDigest" must be either NULL (in which case this function returns a heap-allocated
+    // buffer, which should be later delete[]d by the caller), or else it must point to
+    // a (>=)33-byte buffer (which this function will also return).
+
+extern unsigned char* our_MD5DataRaw(unsigned char const* data, unsigned dataSize,
+				     unsigned char* outputDigest);
+    // Like "ourMD5Data()", except that it returns the digest in 'raw' binary form, rather than
+    // as an ASCII hex string.
+    // "outputDigest" must be either NULL (in which case this function returns a heap-allocated
+    // buffer, which should be later delete[]d by the caller), or else it must point to
+    // a (>=)16-byte buffer (which this function will also return).
+
+#endif
diff --git a/liveMedia/include/uLawAudioFilter.hh b/liveMedia/include/uLawAudioFilter.hh
new file mode 100644
index 0000000..fd3f5b0
--- /dev/null
+++ b/liveMedia/include/uLawAudioFilter.hh
@@ -0,0 +1,208 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Filters for converting between raw PCM audio and uLaw
+// C++ header
+
+#ifndef _ULAW_AUDIO_FILTER_HH
+#define _ULAW_AUDIO_FILTER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+////////// 16-bit PCM (in various byte orderings) -> 8-bit u-Law //////////
+
+class uLawFromPCMAudioSource: public FramedFilter {
+public:
+  static uLawFromPCMAudioSource*
+  createNew(UsageEnvironment& env, FramedSource* inputSource,
+	    int byteOrdering = 0);
+  // "byteOrdering" == 0 => host order (the default)
+  // "byteOrdering" == 1 => little-endian order
+  // "byteOrdering" == 2 => network (i.e., big-endian) order
+
+protected:
+  uLawFromPCMAudioSource(UsageEnvironment& env, FramedSource* inputSource,
+			 int byteOrdering);
+      // called only by createNew()
+  virtual ~uLawFromPCMAudioSource();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+			  unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+
+private:
+  int fByteOrdering;
+  unsigned char* fInputBuffer;
+  unsigned fInputBufferSize;
+};
+
+
+////////// u-Law -> 16-bit PCM (in host order) //////////
+
+class PCMFromuLawAudioSource: public FramedFilter {
+public:
+  static PCMFromuLawAudioSource*
+  createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+  PCMFromuLawAudioSource(UsageEnvironment& env,
+			 FramedSource* inputSource);
+      // called only by createNew()
+  virtual ~PCMFromuLawAudioSource();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+			  unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+
+private:
+  unsigned char* fInputBuffer;
+  unsigned fInputBufferSize;
+};
+
+
+////////// 16-bit values (in host order) -> 16-bit network order //////////
+
+class NetworkFromHostOrder16: public FramedFilter {
+public:
+  static NetworkFromHostOrder16*
+  createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+  NetworkFromHostOrder16(UsageEnvironment& env, FramedSource* inputSource);
+      // called only by createNew()
+  virtual ~NetworkFromHostOrder16();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+			  unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+};
+
+
+////////// 16-bit values (in network order) -> 16-bit host order //////////
+
+class HostFromNetworkOrder16: public FramedFilter {
+public:
+  static HostFromNetworkOrder16*
+  createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+  HostFromNetworkOrder16(UsageEnvironment& env, FramedSource* inputSource);
+      // called only by createNew()
+  virtual ~HostFromNetworkOrder16();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+			  unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+};
+
+
+////////// 16-bit values: little-endian <-> big-endian //////////
+
+class EndianSwap16: public FramedFilter {
+public:
+  static EndianSwap16* createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+  EndianSwap16(UsageEnvironment& env, FramedSource* inputSource);
+      // called only by createNew()
+  virtual ~EndianSwap16();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+			  unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+};
+
+
+////////// 24-bit values: little-endian <-> big-endian //////////
+
+class EndianSwap24: public FramedFilter {
+public:
+  static EndianSwap24* createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+  EndianSwap24(UsageEnvironment& env, FramedSource* inputSource);
+      // called only by createNew()
+  virtual ~EndianSwap24();
+
+private:
+  // Redefined virtual functions:
+  virtual void doGetNextFrame();
+
+private:
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+				unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+				unsigned durationInMicroseconds);
+  void afterGettingFrame1(unsigned frameSize,
+			  unsigned numTruncatedBytes,
+			  struct timeval presentationTime,
+			  unsigned durationInMicroseconds);
+};
+
+#endif
diff --git a/liveMedia/ourMD5.cpp b/liveMedia/ourMD5.cpp
new file mode 100644
index 0000000..a9a67c3
--- /dev/null
+++ b/liveMedia/ourMD5.cpp
@@ -0,0 +1,325 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Because MD5 may not be implemented (at least, with the same interface) on all systems,
+// we have our own implementation.
+// Implementation
+
+#include "ourMD5.hh"
+#include <NetCommon.h> // for u_int32_t, u_int64_t
+#include <string.h>
+
+#define DIGEST_SIZE_IN_BYTES 16
+#define DIGEST_SIZE_IN_HEX_DIGITS (2*DIGEST_SIZE_IN_BYTES)
+#define DIGEST_SIZE_AS_STRING (DIGEST_SIZE_IN_HEX_DIGITS+1)
+
+// The state of a MD5 computation in progress:
+
+class MD5Context {
+public:
+  MD5Context();
+  ~MD5Context();
+
+  void addData(unsigned char const* inputData, unsigned inputDataSize);
+  void end(char* outputDigest /*must point to an array of size DIGEST_SIZE_AS_STRING*/);
+  void finalize(unsigned char* outputDigestInBytes);
+      // Like "end()", except that the argument is a byte array, of size DIGEST_SIZE_IN_BYTES.
+      // This function is used to implement "end()".
+
+private:
+  void zeroize(); // to remove potentially sensitive information
+  void transform64Bytes(unsigned char const block[64]); // does the actual MD5 transform
+
+private:
+  u_int32_t fState[4]; // ABCD
+  u_int64_t fBitCount; // number of bits, modulo 2^64
+  unsigned char fWorkingBuffer[64];
+};
+
+char* our_MD5Data(unsigned char const* data, unsigned dataSize, char* outputDigest) {
+  MD5Context ctx;
+
+  ctx.addData(data, dataSize);
+
+  if (outputDigest == NULL) outputDigest = new char[DIGEST_SIZE_AS_STRING];
+  ctx.end(outputDigest);
+
+  return outputDigest;
+}
+
+unsigned char* our_MD5DataRaw(unsigned char const* data, unsigned dataSize,
+			      unsigned char* outputDigest) {
+  MD5Context ctx;
+
+  ctx.addData(data, dataSize);
+
+  if (outputDigest == NULL) outputDigest = new unsigned char[DIGEST_SIZE_IN_BYTES];
+  ctx.finalize(outputDigest);
+
+  return outputDigest;
+}
+
+
+////////// MD5Context implementation //////////
+
+MD5Context::MD5Context()
+  : fBitCount(0) {
+  // Initialize with magic constants:
+  fState[0] = 0x67452301;
+  fState[1] = 0xefcdab89;
+  fState[2] = 0x98badcfe;
+  fState[3] = 0x10325476;
+}
+
+MD5Context::~MD5Context() {
+  zeroize();
+}
+
+void MD5Context::addData(unsigned char const* inputData, unsigned inputDataSize) {
+  // Begin by noting how much of our 64-byte working buffer remains unfilled:
+  u_int64_t const byteCount = fBitCount>>3;
+  unsigned bufferBytesInUse = (unsigned)(byteCount&0x3F);
+  unsigned bufferBytesRemaining = 64 - bufferBytesInUse;
+
+  // Then update our bit count:
+  fBitCount += inputDataSize<<3;
+
+  unsigned i = 0;
+  if (inputDataSize >= bufferBytesRemaining) {
+    // We have enough input data to do (64-byte) MD5 transforms.
+    // Do this now, starting with a transform on our working buffer, then with
+    // (as many as possible) transforms on rest of the input data.
+
+    memcpy((unsigned char*)&fWorkingBuffer[bufferBytesInUse], (unsigned char*)inputData, bufferBytesRemaining);
+    transform64Bytes(fWorkingBuffer);
+    bufferBytesInUse = 0;
+
+    for (i = bufferBytesRemaining; i + 63 < inputDataSize; i += 64) {
+      transform64Bytes(&inputData[i]);
+    }
+  }
+
+  // Copy any remaining (and currently un-transformed) input data into our working buffer:
+  if (i < inputDataSize) {
+    memcpy((unsigned char*)&fWorkingBuffer[bufferBytesInUse], (unsigned char*)&inputData[i], inputDataSize - i);
+  }
+}
+
+void MD5Context::end(char* outputDigest) {
+  unsigned char digestInBytes[DIGEST_SIZE_IN_BYTES];
+  finalize(digestInBytes);
+
+  // Convert the digest from bytes (binary) to hex digits:
+  static char const hex[]="0123456789abcdef";
+  unsigned i;
+  for (i = 0; i < DIGEST_SIZE_IN_BYTES; ++i) {
+    outputDigest[2*i] = hex[digestInBytes[i] >> 4];
+    outputDigest[2*i+1] = hex[digestInBytes[i] & 0x0F];
+  }
+  outputDigest[2*i] = '\0';
+}
+
+// Routines that unpack 32 and 64-bit values into arrays of bytes (in little-endian order).
+// (These are used to implement "finalize()".)
+
+static void unpack32(unsigned char out[4], u_int32_t in) {
+  for (unsigned i = 0; i < 4; ++i) {
+    out[i] = (unsigned char)((in>>(8*i))&0xFF);
+  }
+}
+
+static void unpack64(unsigned char out[8], u_int64_t in) {
+  for (unsigned i = 0; i < 8; ++i) {
+    out[i] = (unsigned char)((in>>(8*i))&0xFF);
+  }
+}
+
+static unsigned char const PADDING[64] = {
+          0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+void MD5Context::finalize(unsigned char* outputDigestInBytes) {
+  // Unpack our bit count:
+  unsigned char bitCountInBytes[8];
+  unpack64(bitCountInBytes, fBitCount);
+
+  // Before 'finalizing', make sure that we transform any remaining bytes in our working buffer:
+  u_int64_t const byteCount = fBitCount>>3;
+  unsigned bufferBytesInUse = (unsigned)(byteCount&0x3F);
+  unsigned numPaddingBytes
+    = (bufferBytesInUse < 56) ? (56 - bufferBytesInUse) : (64 + 56 - bufferBytesInUse);
+  addData(PADDING, numPaddingBytes);
+
+  addData(bitCountInBytes, 8);
+
+  // Unpack our 'state' into the output digest:
+  unpack32(&outputDigestInBytes[0], fState[0]);
+  unpack32(&outputDigestInBytes[4], fState[1]);
+  unpack32(&outputDigestInBytes[8], fState[2]);
+  unpack32(&outputDigestInBytes[12], fState[3]);
+
+  zeroize();
+}
+
+void MD5Context::zeroize() {
+  fState[0] = fState[1] = fState[2] = fState[3] = 0;
+  fBitCount = 0;
+  for (unsigned i = 0; i < 64; ++i) fWorkingBuffer[i] = 0;
+}
+
+
+////////// Implementation of the MD5 transform ("MD5Context::transform64Bytes()") //////////
+
+// Constants for the transform:
+#define S11 7
+#define S12 12
+#define S13 17
+#define S14 22
+#define S21 5
+#define S22 9
+#define S23 14
+#define S24 20
+#define S31 4
+#define S32 11
+#define S33 16
+#define S34 23
+#define S41 6
+#define S42 10
+#define S43 15
+#define S44 21
+
+// Basic MD5 functions:
+#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
+#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
+#define H(x, y, z) ((x) ^ (y) ^ (z))
+#define I(x, y, z) ((y) ^ ((x) | (~z)))
+
+// Rotate "x" left "n" bits:
+#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
+
+// Other transforms:
+#define FF(a, b, c, d, x, s, ac) { \
+ (a) += F((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+ (a) = ROTATE_LEFT((a), (s)); \
+ (a) += (b); \
+}
+#define GG(a, b, c, d, x, s, ac) { \
+ (a) += G((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+ (a) = ROTATE_LEFT((a), (s)); \
+ (a) += (b); \
+}
+#define HH(a, b, c, d, x, s, ac) { \
+ (a) += H((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+ (a) = ROTATE_LEFT((a), (s)); \
+ (a) += (b); \
+}
+#define II(a, b, c, d, x, s, ac) { \
+ (a) += I((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+ (a) = ROTATE_LEFT((a), (s)); \
+ (a) += (b); \
+}
+
+void MD5Context::transform64Bytes(unsigned char const block[64]) {
+  u_int32_t a = fState[0], b = fState[1], c = fState[2], d = fState[3];
+
+  // Begin by packing "block" into an array ("x") of 16 32-bit values (in little-endian order):
+  u_int32_t x[16];
+  for (unsigned i = 0, j = 0; i < 16; ++i, j += 4) {
+    x[i] = ((u_int32_t)block[j]) | (((u_int32_t)block[j+1]) << 8) | (((u_int32_t)block[j+2]) << 16) | (((u_int32_t)block[j+3]) << 24);
+  }
+
+  // Now, perform the transform on the array "x":
+
+  // Round 1
+  FF(a, b, c, d, x[0], S11, 0xd76aa478);	// 1
+  FF(d, a, b, c, x[1], S12, 0xe8c7b756);	// 2
+  FF(c, d, a, b, x[2], S13, 0x242070db);	// 3
+  FF(b, c, d, a, x[3], S14, 0xc1bdceee);	// 4
+  FF(a, b, c, d, x[4], S11, 0xf57c0faf);	// 5
+  FF(d, a, b, c, x[5], S12, 0x4787c62a);	// 6
+  FF(c, d, a, b, x[6], S13, 0xa8304613);	// 7
+  FF(b, c, d, a, x[7], S14, 0xfd469501);	// 8
+  FF(a, b, c, d, x[8], S11, 0x698098d8);	// 9
+  FF(d, a, b, c, x[9], S12, 0x8b44f7af);	// 10
+  FF(c, d, a, b, x[10], S13, 0xffff5bb1);	// 11
+  FF(b, c, d, a, x[11], S14, 0x895cd7be);	// 12
+  FF(a, b, c, d, x[12], S11, 0x6b901122);	// 13
+  FF(d, a, b, c, x[13], S12, 0xfd987193);	// 14
+  FF(c, d, a, b, x[14], S13, 0xa679438e);	// 15
+  FF(b, c, d, a, x[15], S14, 0x49b40821);	// 16
+  
+  // Round 2
+  GG(a, b, c, d, x[1], S21, 0xf61e2562);	// 17
+  GG(d, a, b, c, x[6], S22, 0xc040b340);	// 18
+  GG(c, d, a, b, x[11], S23, 0x265e5a51);	// 19
+  GG(b, c, d, a, x[0], S24, 0xe9b6c7aa);	// 20
+  GG(a, b, c, d, x[5], S21, 0xd62f105d);	// 21
+  GG(d, a, b, c, x[10], S22, 0x2441453);	// 22
+  GG(c, d, a, b, x[15], S23, 0xd8a1e681);	// 23
+  GG(b, c, d, a, x[4], S24, 0xe7d3fbc8);	// 24
+  GG(a, b, c, d, x[9], S21, 0x21e1cde6);	// 25
+  GG(d, a, b, c, x[14], S22, 0xc33707d6);	// 26
+  GG(c, d, a, b, x[3], S23, 0xf4d50d87);	// 27
+  GG(b, c, d, a, x[8], S24, 0x455a14ed);	// 28
+  GG(a, b, c, d, x[13], S21, 0xa9e3e905);	// 29
+  GG(d, a, b, c, x[2], S22, 0xfcefa3f8);	// 30
+  GG(c, d, a, b, x[7], S23, 0x676f02d9);	// 31
+  GG(b, c, d, a, x[12], S24, 0x8d2a4c8a);	// 32
+  
+  // Round 3
+  HH(a, b, c, d, x[5], S31, 0xfffa3942);	// 33
+  HH(d, a, b, c, x[8], S32, 0x8771f681);	// 34
+  HH(c, d, a, b, x[11], S33, 0x6d9d6122);	// 35
+  HH(b, c, d, a, x[14], S34, 0xfde5380c);	// 36
+  HH(a, b, c, d, x[1], S31, 0xa4beea44);	// 37
+  HH(d, a, b, c, x[4], S32, 0x4bdecfa9);	// 38
+  HH(c, d, a, b, x[7], S33, 0xf6bb4b60);	// 39
+  HH(b, c, d, a, x[10], S34, 0xbebfbc70);	// 40
+  HH(a, b, c, d, x[13], S31, 0x289b7ec6);	// 41
+  HH(d, a, b, c, x[0], S32, 0xeaa127fa);	// 42
+  HH(c, d, a, b, x[3], S33, 0xd4ef3085);	// 43
+  HH(b, c, d, a, x[6], S34, 0x4881d05);	// 44
+  HH(a, b, c, d, x[9], S31, 0xd9d4d039);	// 45
+  HH(d, a, b, c, x[12], S32, 0xe6db99e5);	// 46
+  HH(c, d, a, b, x[15], S33, 0x1fa27cf8);	// 47
+  HH(b, c, d, a, x[2], S34, 0xc4ac5665);	// 48
+  
+  // Round 4
+  II(a, b, c, d, x[0], S41, 0xf4292244);	// 49
+  II(d, a, b, c, x[7], S42, 0x432aff97);	// 50
+  II(c, d, a, b, x[14], S43, 0xab9423a7);	// 51
+  II(b, c, d, a, x[5], S44, 0xfc93a039);	// 52
+  II(a, b, c, d, x[12], S41, 0x655b59c3);	// 53
+  II(d, a, b, c, x[3], S42, 0x8f0ccc92);	// 54
+  II(c, d, a, b, x[10], S43, 0xffeff47d);	// 55
+  II(b, c, d, a, x[1], S44, 0x85845dd1);	// 56
+  II(a, b, c, d, x[8], S41, 0x6fa87e4f);	// 57
+  II(d, a, b, c, x[15], S42, 0xfe2ce6e0);	// 58
+  II(c, d, a, b, x[6], S43, 0xa3014314);	// 59
+  II(b, c, d, a, x[13], S44, 0x4e0811a1);	// 60
+  II(a, b, c, d, x[4], S41, 0xf7537e82);	// 61
+  II(d, a, b, c, x[11], S42, 0xbd3af235);	// 62
+  II(c, d, a, b, x[2], S43, 0x2ad7d2bb);	// 63
+  II(b, c, d, a, x[9], S44, 0xeb86d391);	// 64
+  
+  fState[0] += a; fState[1] += b; fState[2] += c; fState[3] += d;
+
+  // Zeroize sensitive information.
+  for (unsigned k = 0; k < 16; ++k) x[k] = 0;
+}
diff --git a/liveMedia/rtcp_from_spec.c b/liveMedia/rtcp_from_spec.c
new file mode 100644
index 0000000..a828ec7
--- /dev/null
+++ b/liveMedia/rtcp_from_spec.c
@@ -0,0 +1,289 @@
+/* RTCP code taken directly from the most recent RTP specification:
+ *     RFC 3550
+ * Implementation
+ */
+
+#include "rtcp_from_spec.h"
+
+/*****
+
+A.7 Computing the RTCP Transmission Interval
+
+   The following functions implement the RTCP transmission and reception
+   rules described in Section 6.2. These rules are coded in several
+   functions:
+
+       o  rtcp_interval() computes the deterministic calculated
+          interval, measured in seconds.  The parameters are defined in
+          Section 6.3.
+
+       o  OnExpire() is called when the RTCP transmission timer expires.
+
+       o  OnReceive() is called whenever an RTCP packet is received.
+
+   Both OnExpire() and OnReceive() have event e as an argument. This is
+   the next scheduled event for that participant, either an RTCP report
+   or a BYE packet.  It is assumed that the following functions are
+   available:
+
+       o  Schedule(time t, event e) schedules an event e to occur at
+          time t. When time t arrives, the function OnExpire is called
+          with e as an argument.
+
+       o  Reschedule(time t, event e) reschedules a previously scheduled
+          event e for time t.
+
+       o  SendRTCPReport(event e) sends an RTCP report.
+
+       o  SendBYEPacket(event e) sends a BYE packet.
+
+       o  TypeOfEvent(event e) returns EVENT_BYE if the event being
+          processed is for a BYE packet to be sent, else it returns
+          EVENT_REPORT.
+
+       o  PacketType(p) returns PACKET_RTCP_REPORT if packet p is an
+          RTCP report (not BYE), PACKET_BYE if its a BYE RTCP packet,
+          and PACKET_RTP if its a regular RTP data packet.
+
+       o  ReceivedPacketSize() and SentPacketSize() return the size of
+          the referenced packet in octets.
+
+       o  NewMember(p) returns a 1 if the participant who sent packet p
+          is not currently in the member list, 0 otherwise. Note this
+          function is not sufficient for a complete implementation
+          because each CSRC identifier in an RTP packet and each SSRC in
+          a BYE packet should be processed.
+
+       o  NewSender(p) returns a 1 if the participant who sent packet p
+          is not currently in the sender sublist of the member list, 0
+          otherwise.
+
+       o  AddMember() and RemoveMember() to add and remove participants
+          from the member list.
+
+       o  AddSender() and RemoveSender() to add and remove participants
+          from the sender sublist of the member list.
+*****/
+
+
+   double rtcp_interval(int members,
+                        int senders,
+                        double rtcp_bw,
+                        int we_sent,
+                        double avg_rtcp_size,
+                        int initial)
+   {
+       /*
+        * Minimum average time between RTCP packets from this site (in
+        * seconds).  This time prevents the reports from `clumping' when
+        * sessions are small and the law of large numbers isn't helping
+        * to smooth out the traffic.  It also keeps the report interval
+        * from becoming ridiculously small during transient outages like
+        * a network partition.
+        */
+       double const RTCP_MIN_TIME = 5.;
+       /*
+        * Fraction of the RTCP bandwidth to be shared among active
+        * senders.  (This fraction was chosen so that in a typical
+        * session with one or two active senders, the computed report
+        * time would be roughly equal to the minimum report time so that
+        * we don't unnecessarily slow down receiver reports.) The
+        * receiver fraction must be 1 - the sender fraction.
+        */
+       double const RTCP_SENDER_BW_FRACTION = 0.25;
+       double const RTCP_RCVR_BW_FRACTION = (1-RTCP_SENDER_BW_FRACTION);
+       /*
+        * To compensate for "unconditional reconsideration" converging to a
+        * value below the intended average.
+        */
+       double const COMPENSATION = 2.71828 - 1.5;
+
+       double t;                   /* interval */
+       double rtcp_min_time = RTCP_MIN_TIME;
+       int n;                      /* no. of members for computation */
+
+       /*
+        * Very first call at application start-up uses half the min
+        * delay for quicker notification while still allowing some time
+        * before reporting for randomization and to learn about other
+        * sources so the report interval will converge to the correct
+        * interval more quickly.
+        */
+       if (initial) {
+           rtcp_min_time /= 2;
+       }
+
+       /*
+        * If there were active senders, give them at least a minimum
+        * share of the RTCP bandwidth.  Otherwise all participants share
+        * the RTCP bandwidth equally.
+        */
+       n = members;
+       if (senders > 0 && senders < members * RTCP_SENDER_BW_FRACTION) {
+           if (we_sent) {
+               rtcp_bw *= RTCP_SENDER_BW_FRACTION;
+               n = senders;
+           } else {
+               rtcp_bw *= RTCP_RCVR_BW_FRACTION;
+               n -= senders;
+           }
+       }
+
+       /*
+        * The effective number of sites times the average packet size is
+        * the total number of octets sent when each site sends a report.
+        * Dividing this by the effective bandwidth gives the time
+        * interval over which those packets must be sent in order to
+        * meet the bandwidth target, with a minimum enforced.  In that
+        * time interval we send one report so this time is also our
+        * average time between reports.
+        */
+       t = avg_rtcp_size * n / rtcp_bw;
+       if (t < rtcp_min_time) t = rtcp_min_time;
+
+       /*
+        * To avoid traffic bursts from unintended synchronization with
+        * other sites, we then pick our actual next report interval as a
+        * random number uniformly distributed between 0.5*t and 1.5*t.
+        */
+       t = t * (drand48() + 0.5);
+       t = t / COMPENSATION;
+       return t;
+   }
+
+   void OnExpire(event e,
+                 int    members,
+                 int    senders,
+                 double rtcp_bw,
+                 int    we_sent,
+                 double *avg_rtcp_size,
+                 int    *initial,
+                 time_tp   tc,
+                 time_tp   *tp,
+                 int    *pmembers)
+   {
+       /* This function is responsible for deciding whether to send
+        * an RTCP report or BYE packet now, or to reschedule transmission.
+        * It is also responsible for updating the pmembers, initial, tp,
+        * and avg_rtcp_size state variables. This function should be called
+        * upon expiration of the event timer used by Schedule(). */
+
+       double t;     /* Interval */
+       double tn;    /* Next transmit time */
+
+       /* In the case of a BYE, we use "unconditional reconsideration" to
+        * reschedule the transmission of the BYE if necessary */
+
+       if (TypeOfEvent(e) == EVENT_BYE) {
+           t = rtcp_interval(members,
+                             senders,
+                             rtcp_bw,
+                             we_sent,
+                             *avg_rtcp_size,
+                             *initial);
+           tn = *tp + t;
+           if (tn <= tc) {
+               SendBYEPacket(e);
+               exit(1);
+           } else {
+               Schedule(tn, e);
+           }
+
+       } else if (TypeOfEvent(e) == EVENT_REPORT) {
+           t = rtcp_interval(members,
+                             senders,
+                             rtcp_bw,
+                             we_sent,
+                             *avg_rtcp_size,
+                             *initial);
+           tn = *tp + t;
+
+           if (tn <= tc) {
+               SendRTCPReport(e);
+               *avg_rtcp_size = (1./16.)*SentPacketSize(e) +
+                   (15./16.)*(*avg_rtcp_size);
+               *tp = tc;
+
+               /* We must redraw the interval. Don't reuse the
+                  one computed above, since its not actually
+                  distributed the same, as we are conditioned
+                  on it being small enough to cause a packet to
+                  be sent */
+
+               t = rtcp_interval(members,
+                                 senders,
+                                 rtcp_bw,
+                                 we_sent,
+                                 *avg_rtcp_size,
+                                 *initial);
+
+               Schedule(t+tc,e);
+               *initial = 0;
+           } else {
+               Schedule(tn, e);
+           }
+           *pmembers = members;
+       }
+   }
+
+
+   void OnReceive(packet p,
+                  event e,
+                  int *members,
+                  int *pmembers,
+                  int *senders,
+                  double *avg_rtcp_size,
+                  double *tp,
+                  double tc,
+                  double tn)
+   {
+       /* What we do depends on whether we have left the group, and
+        * are waiting to send a BYE (TypeOfEvent(e) == EVENT_BYE) or
+        * an RTCP report. p represents the packet that was just received. */
+
+       if (PacketType(p) == PACKET_RTCP_REPORT) {
+           if (NewMember(p) && (TypeOfEvent(e) == EVENT_REPORT)) {
+               AddMember(p);
+               *members += 1;
+           }
+           *avg_rtcp_size = (1./16.)*ReceivedPacketSize(p) +
+               (15./16.)*(*avg_rtcp_size);
+       } else if (PacketType(p) == PACKET_RTP) {
+           if (NewMember(p) && (TypeOfEvent(e) == EVENT_REPORT)) {
+               AddMember(p);
+               *members += 1;
+           }
+           if (NewSender(p) && (TypeOfEvent(e) == EVENT_REPORT)) {
+               AddSender(p);
+               *senders += 1;
+           }
+       } else if (PacketType(p) == PACKET_BYE) {
+           *avg_rtcp_size = (1./16.)*ReceivedPacketSize(p) +
+               (15./16.)*(*avg_rtcp_size);
+
+           if (TypeOfEvent(e) == EVENT_REPORT) {
+               if (NewSender(p) == FALSE) {
+                   RemoveSender(p);
+                   *senders -= 1;
+               }
+
+               if (NewMember(p) == FALSE) {
+                   RemoveMember(p);
+                   *members -= 1;
+               }
+
+               if(*members < *pmembers) {
+                   tn = tc + (((double) *members)/(*pmembers))*(tn - tc);
+                   *tp = tc - (((double) *members)/(*pmembers))*(tc - *tp);
+
+                   /* Reschedule the next report for time tn */
+
+                   Reschedule(tn, e);
+                   *pmembers = *members;
+               }
+
+           } else if (TypeOfEvent(e) == EVENT_BYE) {
+               *members += 1;
+           }
+       }
+   }
diff --git a/liveMedia/rtcp_from_spec.h b/liveMedia/rtcp_from_spec.h
new file mode 100644
index 0000000..629971f
--- /dev/null
+++ b/liveMedia/rtcp_from_spec.h
@@ -0,0 +1,82 @@
+/* RTCP code taken directly from the most recent RTP specification:
+ *     draft-ietf-avt-rtp-new-11.txt
+ * C header
+ */
+
+#ifndef _RTCP_FROM_SPEC_H
+#define _RTCP_FROM_SPEC_H
+
+#include <stdlib.h>
+
+/* Definitions of _ANSI_ARGS and EXTERN that will work in either
+   C or C++ code:
+ */
+#undef _ANSI_ARGS_
+#if ((defined(__STDC__) || defined(SABER)) && !defined(NO_PROTOTYPE)) || defined(__cplusplus) || defined(USE_PROTOTYPE)
+#   define _ANSI_ARGS_(x)	x
+#else
+#   define _ANSI_ARGS_(x)	()
+#endif
+#ifdef __cplusplus
+#   define EXTERN extern "C"
+#else
+#   define EXTERN extern
+#endif
+
+/* The code from the spec assumes a type "event"; make this a void*: */
+typedef void* event;
+
+#define EVENT_UNKNOWN 0
+#define EVENT_REPORT 1
+#define EVENT_BYE 2
+
+/* The code from the spec assumes a type "time_tp"; make this a double: */
+typedef double time_tp;
+
+/* The code from the spec assumes a type "packet"; make this a void*: */
+typedef void* packet;
+
+#define PACKET_UNKNOWN_TYPE 0
+#define PACKET_RTP 1
+#define PACKET_RTCP_REPORT 2
+#define PACKET_BYE 3
+#define PACKET_RTCP_APP 4
+
+/* The code from the spec calls drand48(), but we have drand30() instead */
+#define drand48 drand30
+
+/* The code calls "exit()", but we don't want to exit, so make it a noop: */
+#define exit(n) do {} while (0)
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+/* EXPORTS: */
+
+EXTERN void OnExpire _ANSI_ARGS_((event, int, int, double, int, double*, int*, time_tp, time_tp*, int*));
+
+EXTERN void OnReceive _ANSI_ARGS_((packet, event, int*, int*, int*, double*, double*, double, double));
+
+/* IMPORTS: */
+
+EXTERN void Schedule _ANSI_ARGS_((double,event));
+EXTERN void Reschedule _ANSI_ARGS_((double,event));
+EXTERN void SendRTCPReport _ANSI_ARGS_((event));
+EXTERN void SendBYEPacket _ANSI_ARGS_((event));
+EXTERN int TypeOfEvent _ANSI_ARGS_((event));
+EXTERN int SentPacketSize _ANSI_ARGS_((event));
+EXTERN int PacketType _ANSI_ARGS_((packet));
+EXTERN int ReceivedPacketSize _ANSI_ARGS_((packet));
+EXTERN int NewMember _ANSI_ARGS_((packet));
+EXTERN int NewSender _ANSI_ARGS_((packet));
+EXTERN void AddMember _ANSI_ARGS_((packet));
+EXTERN void AddSender _ANSI_ARGS_((packet));
+EXTERN void RemoveMember _ANSI_ARGS_((packet));
+EXTERN void RemoveSender _ANSI_ARGS_((packet));
+EXTERN double drand30 _ANSI_ARGS_((void));
+
+#endif
diff --git a/liveMedia/uLawAudioFilter.cpp b/liveMedia/uLawAudioFilter.cpp
new file mode 100644
index 0000000..1954b47
--- /dev/null
+++ b/liveMedia/uLawAudioFilter.cpp
@@ -0,0 +1,431 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2020 Live Networks, Inc.  All rights reserved.
+// Filters for converting between raw PCM audio and uLaw
+// Implementation
+
+#include "uLawAudioFilter.hh"
+
+////////// 16-bit PCM (in various byte orders) -> 8-bit u-Law //////////
+
+uLawFromPCMAudioSource* uLawFromPCMAudioSource
+::createNew(UsageEnvironment& env, FramedSource* inputSource, int byteOrdering) {
+  // "byteOrdering" must be 0, 1, or 2:
+  if (byteOrdering < 0 || byteOrdering > 2) {
+    env.setResultMsg("uLawFromPCMAudioSource::createNew(): bad \"byteOrdering\" parameter");
+    return NULL;
+  }
+  return new uLawFromPCMAudioSource(env, inputSource, byteOrdering);
+}
+
+uLawFromPCMAudioSource
+::uLawFromPCMAudioSource(UsageEnvironment& env, FramedSource* inputSource,
+			 int byteOrdering)
+  : FramedFilter(env, inputSource),
+    fByteOrdering(byteOrdering), fInputBuffer(NULL), fInputBufferSize(0) {
+}
+
+uLawFromPCMAudioSource::~uLawFromPCMAudioSource() {
+  delete[] fInputBuffer;
+}
+
+void uLawFromPCMAudioSource::doGetNextFrame() {
+  // Figure out how many bytes of input data to ask for, and increase
+  // our input buffer if necessary:
+  unsigned bytesToRead = fMaxSize*2; // because we're converting 16 bits->8
+  if (bytesToRead > fInputBufferSize) {
+    delete[] fInputBuffer; fInputBuffer = new unsigned char[bytesToRead];
+    fInputBufferSize = bytesToRead;
+  }
+
+  // Arrange to read samples into the input buffer:
+  fInputSource->getNextFrame(fInputBuffer, bytesToRead,
+			     afterGettingFrame, this,
+                             FramedSource::handleClosure, this);
+}
+
+void uLawFromPCMAudioSource
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned durationInMicroseconds) {
+  uLawFromPCMAudioSource* source = (uLawFromPCMAudioSource*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes,
+			     presentationTime, durationInMicroseconds);
+}
+
+#define BIAS 0x84   // the add-in bias for 16 bit samples
+#define CLIP 32635
+
+static unsigned char uLawFrom16BitLinear(u_int16_t sample) {
+  static int const exp_lut[256] = {0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
+				   4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
+				   5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+				   5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+				   6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+				   6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+				   6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+				   6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+				   7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+				   7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+				   7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+				   7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+				   7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+				   7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+				   7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+				   7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7};
+  unsigned char sign = (sample >> 8) & 0x80;
+  if (sign != 0) sample = -sample; // get the magnitude
+
+  if (sample > CLIP) sample = CLIP; // clip the magnitude
+  sample += BIAS;
+
+  unsigned char exponent = exp_lut[(sample>>7) & 0xFF];
+  unsigned char mantissa = (sample >> (exponent+3)) & 0x0F;
+  unsigned char result = ~(sign | (exponent << 4) | mantissa);
+  if (result == 0 ) result = 0x02;  // CCITT trap
+
+  return result;
+}
+
+void uLawFromPCMAudioSource
+::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+		     struct timeval presentationTime,
+		     unsigned durationInMicroseconds) {
+  // Translate raw 16-bit PCM samples (in the input buffer)
+  // into uLaw samples (in the output buffer).
+  unsigned numSamples = frameSize/2;
+  switch (fByteOrdering) {
+    case 0: { // host order
+      u_int16_t* inputSample = (u_int16_t*)fInputBuffer;
+      for (unsigned i = 0; i < numSamples; ++i) {
+	fTo[i] = uLawFrom16BitLinear(inputSample[i]);
+      }
+      break;
+    }
+    case 1: { // little-endian order
+      for (unsigned i = 0; i < numSamples; ++i) {
+	u_int16_t const newValue = (fInputBuffer[2*i+1]<<8)|fInputBuffer[2*i];
+	fTo[i] = uLawFrom16BitLinear(newValue);
+      }
+      break;
+    }
+    case 2: { // network (i.e., big-endian) order
+      for (unsigned i = 0; i < numSamples; ++i) {
+	u_int16_t const newValue = (fInputBuffer[2*i]<<8)|fInputBuffer[2*i+i];
+	fTo[i] = uLawFrom16BitLinear(newValue);
+      }
+      break;
+    }
+  }
+
+  // Complete delivery to the client:
+  fFrameSize = numSamples;
+  fNumTruncatedBytes = numTruncatedBytes;
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+  afterGetting(this);
+}
+
+
+////////// u-Law -> 16-bit PCM (in host order) //////////
+
+PCMFromuLawAudioSource* PCMFromuLawAudioSource
+::createNew(UsageEnvironment& env, FramedSource* inputSource) {
+  return new PCMFromuLawAudioSource(env, inputSource);
+}
+
+PCMFromuLawAudioSource
+::PCMFromuLawAudioSource(UsageEnvironment& env,
+			 FramedSource* inputSource)
+  : FramedFilter(env, inputSource),
+    fInputBuffer(NULL), fInputBufferSize(0) {
+}
+
+PCMFromuLawAudioSource::~PCMFromuLawAudioSource() {
+  delete[] fInputBuffer;
+}
+
+void PCMFromuLawAudioSource::doGetNextFrame() {
+  // Figure out how many bytes of input data to ask for, and increase
+  // our input buffer if necessary:
+  unsigned bytesToRead = fMaxSize/2; // because we're converting 8 bits->16
+  if (bytesToRead > fInputBufferSize) {
+    delete[] fInputBuffer; fInputBuffer = new unsigned char[bytesToRead];
+    fInputBufferSize = bytesToRead;
+  }
+
+  // Arrange to read samples into the input buffer:
+  fInputSource->getNextFrame(fInputBuffer, bytesToRead,
+			     afterGettingFrame, this,
+                             FramedSource::handleClosure, this);
+}
+
+void PCMFromuLawAudioSource
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned durationInMicroseconds) {
+  PCMFromuLawAudioSource* source = (PCMFromuLawAudioSource*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes,
+			     presentationTime, durationInMicroseconds);
+}
+
+static u_int16_t linear16FromuLaw(unsigned char uLawByte) {
+  static int const exp_lut[8] = {0,132,396,924,1980,4092,8316,16764};
+  uLawByte = ~uLawByte;
+
+  Boolean sign = (uLawByte & 0x80) != 0;
+  unsigned char exponent = (uLawByte>>4) & 0x07;
+  unsigned char mantissa = uLawByte & 0x0F;
+
+  u_int16_t result = exp_lut[exponent] + (mantissa << (exponent+3));
+  if (sign) result = -result;
+  return result;
+}
+
+void PCMFromuLawAudioSource
+::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+		     struct timeval presentationTime,
+		     unsigned durationInMicroseconds) {
+  // Translate uLaw samples (in the input buffer)
+  // into 16-bit PCM samples (in the output buffer), in host order.
+  unsigned numSamples = frameSize;
+  u_int16_t* outputSample = (u_int16_t*)fTo;
+  for (unsigned i = 0; i < numSamples; ++i) {
+    outputSample[i] = linear16FromuLaw(fInputBuffer[i]);
+  }
+
+  // Complete delivery to the client:
+  fFrameSize = numSamples*2;
+  fNumTruncatedBytes = numTruncatedBytes;
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+  afterGetting(this);
+}
+
+
+////////// 16-bit values (in host order) -> 16-bit network order //////////
+
+NetworkFromHostOrder16* NetworkFromHostOrder16
+::createNew(UsageEnvironment& env, FramedSource* inputSource) {
+  return new NetworkFromHostOrder16(env, inputSource);
+}
+
+NetworkFromHostOrder16
+::NetworkFromHostOrder16(UsageEnvironment& env,
+			 FramedSource* inputSource)
+  : FramedFilter(env, inputSource) {
+}
+
+NetworkFromHostOrder16::~NetworkFromHostOrder16() {
+}
+
+void NetworkFromHostOrder16::doGetNextFrame() {
+  // Arrange to read data directly into the client's buffer:
+  fInputSource->getNextFrame(fTo, fMaxSize,
+			     afterGettingFrame, this,
+                             FramedSource::handleClosure, this);
+}
+
+void NetworkFromHostOrder16
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned durationInMicroseconds) {
+  NetworkFromHostOrder16* source = (NetworkFromHostOrder16*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes,
+			     presentationTime, durationInMicroseconds);
+}
+
+void NetworkFromHostOrder16
+::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+		     struct timeval presentationTime,
+		     unsigned durationInMicroseconds) {
+  // Translate the 16-bit values that we have just read from host
+  // to network order (in-place)
+  unsigned numValues = frameSize/2;
+  u_int16_t* value = (u_int16_t*)fTo;
+  for (unsigned i = 0; i < numValues; ++i) {
+    value[i] = htons(value[i]);
+  }
+
+  // Complete delivery to the client:
+  fFrameSize = numValues*2;
+  fNumTruncatedBytes = numTruncatedBytes;
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+  afterGetting(this);
+}
+
+
+////////// 16-bit values (in network order) -> 16-bit host order //////////
+
+HostFromNetworkOrder16* HostFromNetworkOrder16
+::createNew(UsageEnvironment& env, FramedSource* inputSource) {
+  return new HostFromNetworkOrder16(env, inputSource);
+}
+
+HostFromNetworkOrder16
+::HostFromNetworkOrder16(UsageEnvironment& env,
+			 FramedSource* inputSource)
+  : FramedFilter(env, inputSource) {
+}
+
+HostFromNetworkOrder16::~HostFromNetworkOrder16() {
+}
+
+void HostFromNetworkOrder16::doGetNextFrame() {
+  // Arrange to read data directly into the client's buffer:
+  fInputSource->getNextFrame(fTo, fMaxSize,
+			     afterGettingFrame, this,
+                             FramedSource::handleClosure, this);
+}
+
+void HostFromNetworkOrder16
+::afterGettingFrame(void* clientData, unsigned frameSize,
+		    unsigned numTruncatedBytes,
+		    struct timeval presentationTime,
+		    unsigned durationInMicroseconds) {
+  HostFromNetworkOrder16* source = (HostFromNetworkOrder16*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes,
+			     presentationTime, durationInMicroseconds);
+}
+
+void HostFromNetworkOrder16
+::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+		     struct timeval presentationTime,
+		     unsigned durationInMicroseconds) {
+  // Translate the 16-bit values that we have just read from network
+  // to host order (in-place):
+  unsigned numValues = frameSize/2;
+  u_int16_t* value = (u_int16_t*)fTo;
+  for (unsigned i = 0; i < numValues; ++i) {
+    value[i] = ntohs(value[i]);
+  }
+
+  // Complete delivery to the client:
+  fFrameSize = numValues*2;
+  fNumTruncatedBytes = numTruncatedBytes;
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+  afterGetting(this);
+}
+
+
+////////// 16-bit values: little-endian <-> big-endian //////////
+
+EndianSwap16*
+EndianSwap16::createNew(UsageEnvironment& env, FramedSource* inputSource) {
+  return new EndianSwap16(env, inputSource);
+}
+
+EndianSwap16::EndianSwap16(UsageEnvironment& env,
+			 FramedSource* inputSource)
+  : FramedFilter(env, inputSource) {
+}
+
+EndianSwap16::~EndianSwap16() {
+}
+
+void EndianSwap16::doGetNextFrame() {
+  // Arrange to read data directly into the client's buffer:
+  fInputSource->getNextFrame(fTo, fMaxSize,
+			     afterGettingFrame, this,
+                             FramedSource::handleClosure, this);
+}
+
+void EndianSwap16::afterGettingFrame(void* clientData, unsigned frameSize,
+				     unsigned numTruncatedBytes,
+				     struct timeval presentationTime,
+				     unsigned durationInMicroseconds) {
+  EndianSwap16* source = (EndianSwap16*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes,
+			     presentationTime, durationInMicroseconds);
+}
+
+void EndianSwap16::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+				      struct timeval presentationTime,
+				      unsigned durationInMicroseconds) {
+  // Swap the byte order of the 16-bit values that we have just read (in place):
+  unsigned numValues = frameSize/2;
+  u_int16_t* value = (u_int16_t*)fTo;
+  for (unsigned i = 0; i < numValues; ++i) {
+    u_int16_t const orig = value[i];
+    value[i] = ((orig&0xFF)<<8) | ((orig&0xFF00)>>8);
+  }
+
+  // Complete delivery to the client:
+  fFrameSize = numValues*2;
+  fNumTruncatedBytes = numTruncatedBytes + (frameSize - fFrameSize);
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+  afterGetting(this);
+}
+
+
+////////// 24-bit values: little-endian <-> big-endian //////////
+
+EndianSwap24*
+EndianSwap24::createNew(UsageEnvironment& env, FramedSource* inputSource) {
+  return new EndianSwap24(env, inputSource);
+}
+
+EndianSwap24::EndianSwap24(UsageEnvironment& env,
+			 FramedSource* inputSource)
+  : FramedFilter(env, inputSource) {
+}
+
+EndianSwap24::~EndianSwap24() {
+}
+
+void EndianSwap24::doGetNextFrame() {
+  // Arrange to read data directly into the client's buffer:
+  fInputSource->getNextFrame(fTo, fMaxSize,
+			     afterGettingFrame, this,
+                             FramedSource::handleClosure, this);
+}
+
+void EndianSwap24::afterGettingFrame(void* clientData, unsigned frameSize,
+				     unsigned numTruncatedBytes,
+				     struct timeval presentationTime,
+				     unsigned durationInMicroseconds) {
+  EndianSwap24* source = (EndianSwap24*)clientData;
+  source->afterGettingFrame1(frameSize, numTruncatedBytes,
+			     presentationTime, durationInMicroseconds);
+}
+
+void EndianSwap24::afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes,
+				      struct timeval presentationTime,
+				      unsigned durationInMicroseconds) {
+  // Swap the byte order of the 24-bit values that we have just read (in place):
+  unsigned const numValues = frameSize/3;
+  u_int8_t* p = fTo;
+  for (unsigned i = 0; i < numValues; ++i) {
+    u_int8_t tmp = p[0];
+    p[0] = p[2];
+    p[2] = tmp;
+    p += 3;
+  }
+
+  // Complete delivery to the client:
+  fFrameSize = numValues*3;
+  fNumTruncatedBytes = numTruncatedBytes + (frameSize - fFrameSize);
+  fPresentationTime = presentationTime;
+  fDurationInMicroseconds = durationInMicroseconds;
+  afterGetting(this);
+}
diff --git a/mediaServer/COPYING b/mediaServer/COPYING
new file mode 120000
index 0000000..012065c
--- /dev/null
+++ b/mediaServer/COPYING
@@ -0,0 +1 @@
+../COPYING
\ No newline at end of file
diff --git a/mediaServer/COPYING.LESSER b/mediaServer/COPYING.LESSER
new file mode 120000
index 0000000..ce9a3ce
--- /dev/null
+++ b/mediaServer/COPYING.LESSER
@@ -0,0 +1 @@
+../COPYING.LESSER
\ No newline at end of file
diff --git a/mediaServer/DynamicRTSPServer.cpp b/mediaServer/DynamicRTSPServer.cpp
new file mode 100644
index 0000000..e787089
--- /dev/null
+++ b/mediaServer/DynamicRTSPServer.cpp
@@ -0,0 +1,240 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A subclass of "RTSPServer" that creates "ServerMediaSession"s on demand,
+// based on whether or not the specified stream name exists as a file
+// Implementation
+
+#include "DynamicRTSPServer.hh"
+#include <liveMedia.hh>
+#include <string.h>
+
+DynamicRTSPServer*
+DynamicRTSPServer::createNew(UsageEnvironment& env, Port ourPort,
+			     UserAuthenticationDatabase* authDatabase,
+			     unsigned reclamationTestSeconds) {
+  int ourSocket = setUpOurSocket(env, ourPort);
+  if (ourSocket == -1) return NULL;
+
+  return new DynamicRTSPServer(env, ourSocket, ourPort, authDatabase, reclamationTestSeconds);
+}
+
+DynamicRTSPServer::DynamicRTSPServer(UsageEnvironment& env, int ourSocket,
+				     Port ourPort,
+				     UserAuthenticationDatabase* authDatabase, unsigned reclamationTestSeconds)
+  : RTSPServerSupportingHTTPStreaming(env, ourSocket, ourPort, authDatabase, reclamationTestSeconds) {
+}
+
+DynamicRTSPServer::~DynamicRTSPServer() {
+}
+
+static ServerMediaSession* createNewSMS(UsageEnvironment& env,
+					char const* fileName, FILE* fid); // forward
+
+ServerMediaSession* DynamicRTSPServer
+::lookupServerMediaSession(char const* streamName, Boolean isFirstLookupInSession) {
+  // First, check whether the specified "streamName" exists as a local file:
+  FILE* fid = fopen(streamName, "rb");
+  Boolean const fileExists = fid != NULL;
+
+  // Next, check whether we already have a "ServerMediaSession" for this file:
+  ServerMediaSession* sms = RTSPServer::lookupServerMediaSession(streamName);
+  Boolean const smsExists = sms != NULL;
+
+  // Handle the four possibilities for "fileExists" and "smsExists":
+  if (!fileExists) {
+    if (smsExists) {
+      // "sms" was created for a file that no longer exists. Remove it:
+      removeServerMediaSession(sms);
+      sms = NULL;
+    }
+
+    return NULL;
+  } else {
+    if (smsExists && isFirstLookupInSession) { 
+      // Remove the existing "ServerMediaSession" and create a new one, in case the underlying
+      // file has changed in some way:
+      removeServerMediaSession(sms); 
+      sms = NULL;
+    } 
+
+    if (sms == NULL) {
+      sms = createNewSMS(envir(), streamName, fid); 
+      addServerMediaSession(sms);
+    }
+
+    fclose(fid);
+    return sms;
+  }
+}
+
+// Special code for handling Matroska files:
+struct MatroskaDemuxCreationState {
+  MatroskaFileServerDemux* demux;
+  char watchVariable;
+};
+static void onMatroskaDemuxCreation(MatroskaFileServerDemux* newDemux, void* clientData) {
+  MatroskaDemuxCreationState* creationState = (MatroskaDemuxCreationState*)clientData;
+  creationState->demux = newDemux;
+  creationState->watchVariable = 1;
+}
+// END Special code for handling Matroska files:
+
+// Special code for handling Ogg files:
+struct OggDemuxCreationState {
+  OggFileServerDemux* demux;
+  char watchVariable;
+};
+static void onOggDemuxCreation(OggFileServerDemux* newDemux, void* clientData) {
+  OggDemuxCreationState* creationState = (OggDemuxCreationState*)clientData;
+  creationState->demux = newDemux;
+  creationState->watchVariable = 1;
+}
+// END Special code for handling Ogg files:
+
+#define NEW_SMS(description) do {\
+char const* descStr = description\
+    ", streamed by the LIVE555 Media Server";\
+sms = ServerMediaSession::createNew(env, fileName, fileName, descStr);\
+} while(0)
+
+static ServerMediaSession* createNewSMS(UsageEnvironment& env,
+					char const* fileName, FILE* /*fid*/) {
+  // Use the file name extension to determine the type of "ServerMediaSession":
+  char const* extension = strrchr(fileName, '.');
+  if (extension == NULL) return NULL;
+
+  ServerMediaSession* sms = NULL;
+  Boolean const reuseSource = False;
+  if (strcmp(extension, ".aac") == 0) {
+    // Assumed to be an AAC Audio (ADTS format) file:
+    NEW_SMS("AAC Audio");
+    sms->addSubsession(ADTSAudioFileServerMediaSubsession::createNew(env, fileName, reuseSource));
+  } else if (strcmp(extension, ".amr") == 0) {
+    // Assumed to be an AMR Audio file:
+    NEW_SMS("AMR Audio");
+    sms->addSubsession(AMRAudioFileServerMediaSubsession::createNew(env, fileName, reuseSource));
+  } else if (strcmp(extension, ".ac3") == 0) {
+    // Assumed to be an AC-3 Audio file:
+    NEW_SMS("AC-3 Audio");
+    sms->addSubsession(AC3AudioFileServerMediaSubsession::createNew(env, fileName, reuseSource));
+  } else if (strcmp(extension, ".m4e") == 0) {
+    // Assumed to be a MPEG-4 Video Elementary Stream file:
+    NEW_SMS("MPEG-4 Video");
+    sms->addSubsession(MPEG4VideoFileServerMediaSubsession::createNew(env, fileName, reuseSource));
+  } else if (strcmp(extension, ".264") == 0) {
+    // Assumed to be a H.264 Video Elementary Stream file:
+    NEW_SMS("H.264 Video");
+    OutPacketBuffer::maxSize = 100000; // allow for some possibly large H.264 frames
+    sms->addSubsession(H264VideoFileServerMediaSubsession::createNew(env, fileName, reuseSource));
+  } else if (strcmp(extension, ".265") == 0) {
+    // Assumed to be a H.265 Video Elementary Stream file:
+    NEW_SMS("H.265 Video");
+    OutPacketBuffer::maxSize = 100000; // allow for some possibly large H.265 frames
+    sms->addSubsession(H265VideoFileServerMediaSubsession::createNew(env, fileName, reuseSource));
+  } else if (strcmp(extension, ".mp3") == 0) {
+    // Assumed to be a MPEG-1 or 2 Audio file:
+    NEW_SMS("MPEG-1 or 2 Audio");
+    // To stream using 'ADUs' rather than raw MP3 frames, uncomment the following:
+//#define STREAM_USING_ADUS 1
+    // To also reorder ADUs before streaming, uncomment the following:
+//#define INTERLEAVE_ADUS 1
+    // (For more information about ADUs and interleaving,
+    //  see <http://www.live555.com/rtp-mp3/>)
+    Boolean useADUs = False;
+    Interleaving* interleaving = NULL;
+#ifdef STREAM_USING_ADUS
+    useADUs = True;
+#ifdef INTERLEAVE_ADUS
+    unsigned char interleaveCycle[] = {0,2,1,3}; // or choose your own...
+    unsigned const interleaveCycleSize
+      = (sizeof interleaveCycle)/(sizeof (unsigned char));
+    interleaving = new Interleaving(interleaveCycleSize, interleaveCycle);
+#endif
+#endif
+    sms->addSubsession(MP3AudioFileServerMediaSubsession::createNew(env, fileName, reuseSource, useADUs, interleaving));
+  } else if (strcmp(extension, ".mpg") == 0) {
+    // Assumed to be a MPEG-1 or 2 Program Stream (audio+video) file:
+    NEW_SMS("MPEG-1 or 2 Program Stream");
+    MPEG1or2FileServerDemux* demux
+      = MPEG1or2FileServerDemux::createNew(env, fileName, reuseSource);
+    sms->addSubsession(demux->newVideoServerMediaSubsession());
+    sms->addSubsession(demux->newAudioServerMediaSubsession());
+  } else if (strcmp(extension, ".vob") == 0) {
+    // Assumed to be a VOB (MPEG-2 Program Stream, with AC-3 audio) file:
+    NEW_SMS("VOB (MPEG-2 video with AC-3 audio)");
+    MPEG1or2FileServerDemux* demux
+      = MPEG1or2FileServerDemux::createNew(env, fileName, reuseSource);
+    sms->addSubsession(demux->newVideoServerMediaSubsession());
+    sms->addSubsession(demux->newAC3AudioServerMediaSubsession());
+  } else if (strcmp(extension, ".ts") == 0) {
+    // Assumed to be a MPEG Transport Stream file:
+    // Use an index file name that's the same as the TS file name, except with ".tsx":
+    unsigned indexFileNameLen = strlen(fileName) + 2; // allow for trailing "x\0"
+    char* indexFileName = new char[indexFileNameLen];
+    sprintf(indexFileName, "%sx", fileName);
+    NEW_SMS("MPEG Transport Stream");
+    sms->addSubsession(MPEG2TransportFileServerMediaSubsession::createNew(env, fileName, indexFileName, reuseSource));
+    delete[] indexFileName;
+  } else if (strcmp(extension, ".wav") == 0) {
+    // Assumed to be a WAV Audio file:
+    NEW_SMS("WAV Audio Stream");
+    // To convert 16-bit PCM data to 8-bit u-law, prior to streaming,
+    // change the following to True:
+    Boolean convertToULaw = False;
+    sms->addSubsession(WAVAudioFileServerMediaSubsession::createNew(env, fileName, reuseSource, convertToULaw));
+  } else if (strcmp(extension, ".dv") == 0) {
+    // Assumed to be a DV Video file
+    // First, make sure that the RTPSinks' buffers will be large enough to handle the huge size of DV frames (as big as 288000).
+    OutPacketBuffer::maxSize = 300000;
+
+    NEW_SMS("DV Video");
+    sms->addSubsession(DVVideoFileServerMediaSubsession::createNew(env, fileName, reuseSource));
+  } else if (strcmp(extension, ".mkv") == 0 || strcmp(extension, ".webm") == 0) {
+    // Assumed to be a Matroska file (note that WebM ('.webm') files are also Matroska files)
+    OutPacketBuffer::maxSize = 300000; // allow for some possibly large VP8 or VP9 frames
+    NEW_SMS("Matroska video+audio+(optional)subtitles");
+
+    // Create a Matroska file server demultiplexor for the specified file.
+    // (We enter the event loop to wait for this to complete.)
+    MatroskaDemuxCreationState creationState;
+    creationState.watchVariable = 0;
+    MatroskaFileServerDemux::createNew(env, fileName, onMatroskaDemuxCreation, &creationState);
+    env.taskScheduler().doEventLoop(&creationState.watchVariable);
+
+    ServerMediaSubsession* smss;
+    while ((smss = creationState.demux->newServerMediaSubsession()) != NULL) {
+      sms->addSubsession(smss);
+    }
+  } else if (strcmp(extension, ".ogg") == 0 || strcmp(extension, ".ogv") == 0 || strcmp(extension, ".opus") == 0) {
+    // Assumed to be an Ogg file
+    NEW_SMS("Ogg video and/or audio");
+
+    // Create a Ogg file server demultiplexor for the specified file.
+    // (We enter the event loop to wait for this to complete.)
+    OggDemuxCreationState creationState;
+    creationState.watchVariable = 0;
+    OggFileServerDemux::createNew(env, fileName, onOggDemuxCreation, &creationState);
+    env.taskScheduler().doEventLoop(&creationState.watchVariable);
+
+    ServerMediaSubsession* smss;
+    while ((smss = creationState.demux->newServerMediaSubsession()) != NULL) {
+      sms->addSubsession(smss);
+    }
+  }
+
+  return sms;
+}
diff --git a/mediaServer/DynamicRTSPServer.hh b/mediaServer/DynamicRTSPServer.hh
new file mode 100644
index 0000000..73c119f
--- /dev/null
+++ b/mediaServer/DynamicRTSPServer.hh
@@ -0,0 +1,45 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A subclass of "RTSPServer" that creates "ServerMediaSession"s on demand,
+// based on whether or not the specified stream name exists as a file
+// Header file
+
+#ifndef _DYNAMIC_RTSP_SERVER_HH
+#define _DYNAMIC_RTSP_SERVER_HH
+
+#ifndef _RTSP_SERVER_SUPPORTING_HTTP_STREAMING_HH
+#include "RTSPServerSupportingHTTPStreaming.hh"
+#endif
+
+class DynamicRTSPServer: public RTSPServerSupportingHTTPStreaming {
+public:
+  static DynamicRTSPServer* createNew(UsageEnvironment& env, Port ourPort,
+				      UserAuthenticationDatabase* authDatabase,
+				      unsigned reclamationTestSeconds = 65);
+
+protected:
+  DynamicRTSPServer(UsageEnvironment& env, int ourSocket, Port ourPort,
+		    UserAuthenticationDatabase* authDatabase, unsigned reclamationTestSeconds);
+  // called only by createNew();
+  virtual ~DynamicRTSPServer();
+
+protected: // redefined virtual functions
+  virtual ServerMediaSession*
+  lookupServerMediaSession(char const* streamName, Boolean isFirstLookupInSession);
+};
+
+#endif
diff --git a/mediaServer/Makefile.head b/mediaServer/Makefile.head
new file mode 100644
index 0000000..e81e1ba
--- /dev/null
+++ b/mediaServer/Makefile.head
@@ -0,0 +1,7 @@
+INCLUDES = -I../UsageEnvironment/include -I../groupsock/include -I../liveMedia/include -I../BasicUsageEnvironment/include
+# Default library filename suffixes for each library that we link with.  The "config.*" file might redefine these later.
+libliveMedia_LIB_SUFFIX = $(LIB_SUFFIX)
+libBasicUsageEnvironment_LIB_SUFFIX = $(LIB_SUFFIX)
+libUsageEnvironment_LIB_SUFFIX = $(LIB_SUFFIX)
+libgroupsock_LIB_SUFFIX = $(LIB_SUFFIX)
+##### Change the following for your environment:
diff --git a/mediaServer/Makefile.tail b/mediaServer/Makefile.tail
new file mode 100644
index 0000000..292ebbb
--- /dev/null
+++ b/mediaServer/Makefile.tail
@@ -0,0 +1,41 @@
+##### End of variables to change
+
+MEDIA_SERVER = live555MediaServer$(EXE)
+
+PREFIX = /usr/local
+ALL = $(MEDIA_SERVER)
+all: $(ALL)
+
+.$(C).$(OBJ):
+	$(C_COMPILER) -c $(C_FLAGS) $<
+.$(CPP).$(OBJ):
+	$(CPLUSPLUS_COMPILER) -c $(CPLUSPLUS_FLAGS) $<
+
+MEDIA_SERVER_OBJS = live555MediaServer.$(OBJ) DynamicRTSPServer.$(OBJ)
+
+live555MediaServer.$(CPP):	DynamicRTSPServer.hh version.hh
+DynamicRTSPServer.$(CPP):	DynamicRTSPServer.hh
+
+USAGE_ENVIRONMENT_DIR = ../UsageEnvironment
+USAGE_ENVIRONMENT_LIB = $(USAGE_ENVIRONMENT_DIR)/libUsageEnvironment.$(libUsageEnvironment_LIB_SUFFIX)
+BASIC_USAGE_ENVIRONMENT_DIR = ../BasicUsageEnvironment
+BASIC_USAGE_ENVIRONMENT_LIB = $(BASIC_USAGE_ENVIRONMENT_DIR)/libBasicUsageEnvironment.$(libBasicUsageEnvironment_LIB_SUFFIX)
+LIVEMEDIA_DIR = ../liveMedia
+LIVEMEDIA_LIB = $(LIVEMEDIA_DIR)/libliveMedia.$(libliveMedia_LIB_SUFFIX)
+GROUPSOCK_DIR = ../groupsock
+GROUPSOCK_LIB = $(GROUPSOCK_DIR)/libgroupsock.$(libgroupsock_LIB_SUFFIX)
+LOCAL_LIBS =	$(LIVEMEDIA_LIB) $(GROUPSOCK_LIB) \
+		$(BASIC_USAGE_ENVIRONMENT_LIB) $(USAGE_ENVIRONMENT_LIB)
+LIBS =			$(LOCAL_LIBS) $(LIBS_FOR_CONSOLE_APPLICATION)
+
+live555MediaServer$(EXE):	$(MEDIA_SERVER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MEDIA_SERVER_OBJS) $(LIBS)
+
+clean:
+	-rm -rf *.$(OBJ) $(ALL) core *.core *~ include/*~
+
+install: $(MEDIA_SERVER)
+	  install -d $(DESTDIR)$(PREFIX)/bin
+	  install -m 755 $(MEDIA_SERVER) $(DESTDIR)$(PREFIX)/bin
+
+##### Any additional, platform-specific rules come here:
diff --git a/mediaServer/live555MediaServer.cpp b/mediaServer/live555MediaServer.cpp
new file mode 100644
index 0000000..a131779
--- /dev/null
+++ b/mediaServer/live555MediaServer.cpp
@@ -0,0 +1,92 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// LIVE555 Media Server
+// main program
+
+#include <BasicUsageEnvironment.hh>
+#include "DynamicRTSPServer.hh"
+#include "version.hh"
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  UsageEnvironment* env = BasicUsageEnvironment::createNew(*scheduler);
+
+  UserAuthenticationDatabase* authDB = NULL;
+#ifdef ACCESS_CONTROL
+  // To implement client access control to the RTSP server, do the following:
+  authDB = new UserAuthenticationDatabase;
+  authDB->addUserRecord("username1", "password1"); // replace these with real strings
+  // Repeat the above with each <username>, <password> that you wish to allow
+  // access to the server.
+#endif
+
+  // Create the RTSP server.  Try first with the default port number (554),
+  // and then with the alternative port number (8554):
+  RTSPServer* rtspServer;
+  portNumBits rtspServerPortNum = 554;
+  rtspServer = DynamicRTSPServer::createNew(*env, rtspServerPortNum, authDB);
+  if (rtspServer == NULL) {
+    rtspServerPortNum = 8554;
+    rtspServer = DynamicRTSPServer::createNew(*env, rtspServerPortNum, authDB);
+  }
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+
+  *env << "LIVE555 Media Server\n";
+  *env << "\tversion " << MEDIA_SERVER_VERSION_STRING
+       << " (LIVE555 Streaming Media library version "
+       << LIVEMEDIA_LIBRARY_VERSION_STRING << ").\n";
+
+  char* urlPrefix = rtspServer->rtspURLPrefix();
+  *env << "Play streams from this server using the URL\n\t"
+       << urlPrefix << "<filename>\nwhere <filename> is a file present in the current directory.\n";
+  *env << "Each file's type is inferred from its name suffix:\n";
+  *env << "\t\".264\" => a H.264 Video Elementary Stream file\n";
+  *env << "\t\".265\" => a H.265 Video Elementary Stream file\n";
+  *env << "\t\".aac\" => an AAC Audio (ADTS format) file\n";
+  *env << "\t\".ac3\" => an AC-3 Audio file\n";
+  *env << "\t\".amr\" => an AMR Audio file\n";
+  *env << "\t\".dv\" => a DV Video file\n";
+  *env << "\t\".m4e\" => a MPEG-4 Video Elementary Stream file\n";
+  *env << "\t\".mkv\" => a Matroska audio+video+(optional)subtitles file\n";
+  *env << "\t\".mp3\" => a MPEG-1 or 2 Audio file\n";
+  *env << "\t\".mpg\" => a MPEG-1 or 2 Program Stream (audio+video) file\n";
+  *env << "\t\".ogg\" or \".ogv\" or \".opus\" => an Ogg audio and/or video file\n";
+  *env << "\t\".ts\" => a MPEG Transport Stream file\n";
+  *env << "\t\t(a \".tsx\" index file - if present - provides server 'trick play' support)\n";
+  *env << "\t\".vob\" => a VOB (MPEG-2 video with AC-3 audio) file\n";
+  *env << "\t\".wav\" => a WAV Audio file\n";
+  *env << "\t\".webm\" => a WebM audio(Vorbis)+video(VP8) file\n";
+  *env << "See http://www.live555.com/mediaServer/ for additional documentation.\n";
+
+  // Also, attempt to create a HTTP server for RTSP-over-HTTP tunneling.
+  // Try first with the default HTTP port (80), and then with the alternative HTTP
+  // port numbers (8000 and 8080).
+
+  if (rtspServer->setUpTunnelingOverHTTP(80) || rtspServer->setUpTunnelingOverHTTP(8000) || rtspServer->setUpTunnelingOverHTTP(8080)) {
+    *env << "(We use port " << rtspServer->httpServerPortNum() << " for optional RTSP-over-HTTP tunneling, or for HTTP live streaming (for indexed Transport Stream files only).)\n";
+  } else {
+    *env << "(RTSP-over-HTTP tunneling is not available.)\n";
+  }
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
diff --git a/mediaServer/version.hh b/mediaServer/version.hh
new file mode 100644
index 0000000..929b0c0
--- /dev/null
+++ b/mediaServer/version.hh
@@ -0,0 +1,10 @@
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// Version information for the LIVE555 Media Server application
+// Header file
+
+#ifndef _MEDIA_SERVER_VERSION_HH
+#define _MEDIA_SERVER_VERSION_HH
+
+#define MEDIA_SERVER_VERSION_STRING "0.99"
+
+#endif
diff --git a/proxyServer/COPYING b/proxyServer/COPYING
new file mode 120000
index 0000000..012065c
--- /dev/null
+++ b/proxyServer/COPYING
@@ -0,0 +1 @@
+../COPYING
\ No newline at end of file
diff --git a/proxyServer/COPYING.LESSER b/proxyServer/COPYING.LESSER
new file mode 120000
index 0000000..ce9a3ce
--- /dev/null
+++ b/proxyServer/COPYING.LESSER
@@ -0,0 +1 @@
+../COPYING.LESSER
\ No newline at end of file
diff --git a/proxyServer/Makefile.head b/proxyServer/Makefile.head
new file mode 100644
index 0000000..e81e1ba
--- /dev/null
+++ b/proxyServer/Makefile.head
@@ -0,0 +1,7 @@
+INCLUDES = -I../UsageEnvironment/include -I../groupsock/include -I../liveMedia/include -I../BasicUsageEnvironment/include
+# Default library filename suffixes for each library that we link with.  The "config.*" file might redefine these later.
+libliveMedia_LIB_SUFFIX = $(LIB_SUFFIX)
+libBasicUsageEnvironment_LIB_SUFFIX = $(LIB_SUFFIX)
+libUsageEnvironment_LIB_SUFFIX = $(LIB_SUFFIX)
+libgroupsock_LIB_SUFFIX = $(LIB_SUFFIX)
+##### Change the following for your environment:
diff --git a/proxyServer/Makefile.tail b/proxyServer/Makefile.tail
new file mode 100644
index 0000000..fa9e999
--- /dev/null
+++ b/proxyServer/Makefile.tail
@@ -0,0 +1,38 @@
+##### End of variables to change
+
+PROXY_SERVER = live555ProxyServer$(EXE)
+
+PREFIX = /usr/local
+ALL = $(PROXY_SERVER)
+all: $(ALL)
+
+.$(C).$(OBJ):
+	$(C_COMPILER) -c $(C_FLAGS) $<
+.$(CPP).$(OBJ):
+	$(CPLUSPLUS_COMPILER) -c $(CPLUSPLUS_FLAGS) $<
+
+PROXY_SERVER_OBJS = live555ProxyServer.$(OBJ)
+
+USAGE_ENVIRONMENT_DIR = ../UsageEnvironment
+USAGE_ENVIRONMENT_LIB = $(USAGE_ENVIRONMENT_DIR)/libUsageEnvironment.$(libUsageEnvironment_LIB_SUFFIX)
+BASIC_USAGE_ENVIRONMENT_DIR = ../BasicUsageEnvironment
+BASIC_USAGE_ENVIRONMENT_LIB = $(BASIC_USAGE_ENVIRONMENT_DIR)/libBasicUsageEnvironment.$(libBasicUsageEnvironment_LIB_SUFFIX)
+LIVEMEDIA_DIR = ../liveMedia
+LIVEMEDIA_LIB = $(LIVEMEDIA_DIR)/libliveMedia.$(libliveMedia_LIB_SUFFIX)
+GROUPSOCK_DIR = ../groupsock
+GROUPSOCK_LIB = $(GROUPSOCK_DIR)/libgroupsock.$(libgroupsock_LIB_SUFFIX)
+LOCAL_LIBS =	$(LIVEMEDIA_LIB) $(GROUPSOCK_LIB) \
+		$(BASIC_USAGE_ENVIRONMENT_LIB) $(USAGE_ENVIRONMENT_LIB)
+LIBS =			$(LOCAL_LIBS) $(LIBS_FOR_CONSOLE_APPLICATION)
+
+live555ProxyServer$(EXE):	$(PROXY_SERVER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(PROXY_SERVER_OBJS) $(LIBS)
+
+clean:
+	-rm -rf *.$(OBJ) $(ALL) core *.core *~ include/*~
+
+install: $(PROXY_SERVER)
+	  install -d $(DESTDIR)$(PREFIX)/bin
+	  install -m 755 $(PROXY_SERVER) $(DESTDIR)$(PREFIX)/bin
+
+##### Any additional, platform-specific rules come here:
diff --git a/proxyServer/live555ProxyServer.cpp b/proxyServer/live555ProxyServer.cpp
new file mode 100644
index 0000000..27cc58b
--- /dev/null
+++ b/proxyServer/live555ProxyServer.cpp
@@ -0,0 +1,251 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// LIVE555 Proxy Server
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+
+char const* progName;
+UsageEnvironment* env;
+UserAuthenticationDatabase* authDB = NULL;
+UserAuthenticationDatabase* authDBForREGISTER = NULL;
+
+// Default values of command-line parameters:
+int verbosityLevel = 0;
+Boolean streamRTPOverTCP = False;
+portNumBits tunnelOverHTTPPortNum = 0;
+portNumBits rtspServerPortNum = 554;
+char* username = NULL;
+char* password = NULL;
+Boolean proxyREGISTERRequests = False;
+char* usernameForREGISTER = NULL;
+char* passwordForREGISTER = NULL;
+
+static RTSPServer* createRTSPServer(Port port) {
+  if (proxyREGISTERRequests) {
+    return RTSPServerWithREGISTERProxying::createNew(*env, port, authDB, authDBForREGISTER, 65, streamRTPOverTCP, verbosityLevel, username, password);
+  } else {
+    return RTSPServer::createNew(*env, port, authDB);
+  }
+}
+
+void usage() {
+  *env << "Usage: " << progName
+       << " [-v|-V]"
+       << " [-t|-T <http-port>]"
+       << " [-p <rtspServer-port>]"
+       << " [-u <username> <password>]"
+       << " [-R] [-U <username-for-REGISTER> <password-for-REGISTER>]"
+       << " <rtsp-url-1> ... <rtsp-url-n>\n";
+  exit(1);
+}
+
+int main(int argc, char** argv) {
+  // Increase the maximum size of video frames that we can 'proxy' without truncation.
+  // (Such frames are unreasonably large; the back-end servers should really not be sending frames this large!)
+  OutPacketBuffer::maxSize = 100000; // bytes
+
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  *env << "LIVE555 Proxy Server\n"
+       << "\t(LIVE555 Streaming Media library version "
+       << LIVEMEDIA_LIBRARY_VERSION_STRING
+       << "; licensed under the GNU LGPL)\n\n";
+
+  // Check command-line arguments: optional parameters, then one or more rtsp:// URLs (of streams to be proxied):
+  progName = argv[0];
+  if (argc < 2) usage();
+  while (argc > 1) {
+    // Process initial command-line options (beginning with "-"):
+    char* const opt = argv[1];
+    if (opt[0] != '-') break; // the remaining parameters are assumed to be "rtsp://" URLs
+
+    switch (opt[1]) {
+    case 'v': { // verbose output
+      verbosityLevel = 1;
+      break;
+    }
+
+    case 'V': { // more verbose output
+      verbosityLevel = 2;
+      break;
+    }
+
+    case 't': {
+      // Stream RTP and RTCP over the TCP 'control' connection.
+      // (This is for the 'back end' (i.e., proxied) stream only.)
+      streamRTPOverTCP = True;
+      break;
+    }
+
+    case 'T': {
+      // stream RTP and RTCP over a HTTP connection
+      if (argc > 2 && argv[2][0] != '-') {
+	// The next argument is the HTTP server port number:                                                                       
+	if (sscanf(argv[2], "%hu", &tunnelOverHTTPPortNum) == 1
+	    && tunnelOverHTTPPortNum > 0) {
+	  ++argv; --argc;
+	  break;
+	}
+      }
+
+      // If we get here, the option was specified incorrectly:
+      usage();
+      break;
+    }
+
+    case 'p': {
+      // specify a rtsp server port number 
+      if (argc > 2 && argv[2][0] != '-') {
+        // The next argument is the rtsp server port number:
+        if (sscanf(argv[2], "%hu", &rtspServerPortNum) == 1
+            && rtspServerPortNum > 0) {
+          ++argv; --argc;
+          break;
+        }
+      }
+
+      // If we get here, the option was specified incorrectly:
+      usage();
+      break;
+    }
+    
+    case 'u': { // specify a username and password (to be used if the 'back end' (i.e., proxied) stream requires authentication)
+      if (argc < 4) usage(); // there's no argv[3] (for the "password")
+      username = argv[2];
+      password = argv[3];
+      argv += 2; argc -= 2;
+      break;
+    }
+
+    case 'U': { // specify a username and password to use to authenticate incoming "REGISTER" commands
+      if (argc < 4) usage(); // there's no argv[3] (for the "password")
+      usernameForREGISTER = argv[2];
+      passwordForREGISTER = argv[3];
+
+      if (authDBForREGISTER == NULL) authDBForREGISTER = new UserAuthenticationDatabase;
+      authDBForREGISTER->addUserRecord(usernameForREGISTER, passwordForREGISTER);
+      argv += 2; argc -= 2;
+      break;
+    }
+
+    case 'R': { // Handle incoming "REGISTER" requests by proxying the specified stream:
+      proxyREGISTERRequests = True;
+      break;
+    }
+
+    default: {
+      usage();
+      break;
+    }
+    }
+
+    ++argv; --argc;
+  }
+  if (argc < 2 && !proxyREGISTERRequests) usage(); // there must be at least one URL at the end 
+  // Make sure that the remaining arguments appear to be "rtsp://" (or "rtsps://") URLs:
+  int i;
+  for (i = 1; i < argc; ++i) {
+    if (strncmp(argv[i], "rtsp://", 7) != 0 && strncmp(argv[i], "rtsps://", 8) != 0) usage();
+  }
+  // Do some additional checking for invalid command-line argument combinations:
+  if (authDBForREGISTER != NULL && !proxyREGISTERRequests) {
+    *env << "The '-U <username-for-REGISTER> <password-for-REGISTER>' option can be used only with -R\n";
+    usage();
+  }
+  if (streamRTPOverTCP) {
+    if (tunnelOverHTTPPortNum > 0) {
+      *env << "The -t and -T options cannot both be used!\n";
+      usage();
+    } else {
+      tunnelOverHTTPPortNum = (portNumBits)(~0); // hack to tell "ProxyServerMediaSession" to stream over TCP, but not using HTTP
+    }
+  }
+
+#ifdef ACCESS_CONTROL
+  // To implement client access control to the RTSP server, do the following:
+  authDB = new UserAuthenticationDatabase;
+  authDB->addUserRecord("username1", "password1"); // replace these with real strings
+      // Repeat this line with each <username>, <password> that you wish to allow access to the server.
+#endif
+
+  // Create the RTSP server. Try first with the configured port number,
+  // and then with the default port number (554) if different,
+  // and then with the alternative port number (8554):
+  RTSPServer* rtspServer;
+  rtspServer = createRTSPServer(rtspServerPortNum);
+  if (rtspServer == NULL) {
+    if (rtspServerPortNum != 554) {
+      *env << "Unable to create a RTSP server with port number " << rtspServerPortNum << ": " << env->getResultMsg() << "\n";
+      *env << "Trying instead with the standard port numbers (554 and 8554)...\n";
+
+      rtspServerPortNum = 554;
+      rtspServer = createRTSPServer(rtspServerPortNum);
+    }
+  }
+  if (rtspServer == NULL) {
+    rtspServerPortNum = 8554;
+    rtspServer = createRTSPServer(rtspServerPortNum);
+  }
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+
+  // Create a proxy for each "rtsp://" URL specified on the command line:
+  for (i = 1; i < argc; ++i) {
+    char const* proxiedStreamURL = argv[i];
+    char streamName[30];
+    if (argc == 2) {
+      sprintf(streamName, "%s", "proxyStream"); // there's just one stream; give it this name
+    } else {
+      sprintf(streamName, "proxyStream-%d", i); // there's more than one stream; distinguish them by name
+    }
+    ServerMediaSession* sms
+      = ProxyServerMediaSession::createNew(*env, rtspServer,
+					   proxiedStreamURL, streamName,
+					   username, password, tunnelOverHTTPPortNum, verbosityLevel);
+    rtspServer->addServerMediaSession(sms);
+
+    char* proxyStreamURL = rtspServer->rtspURL(sms);
+    *env << "RTSP stream, proxying the stream \"" << proxiedStreamURL << "\"\n";
+    *env << "\tPlay this stream using the URL: " << proxyStreamURL << "\n";
+    delete[] proxyStreamURL;
+  }
+
+  if (proxyREGISTERRequests) {
+    *env << "(We handle incoming \"REGISTER\" requests on port " << rtspServerPortNum << ")\n";
+  }
+
+  // Also, attempt to create a HTTP server for RTSP-over-HTTP tunneling.
+  // Try first with the default HTTP port (80), and then with the alternative HTTP
+  // port numbers (8000 and 8080).
+
+  if (rtspServer->setUpTunnelingOverHTTP(80) || rtspServer->setUpTunnelingOverHTTP(8000) || rtspServer->setUpTunnelingOverHTTP(8080)) {
+    *env << "\n(We use port " << rtspServer->httpServerPortNum() << " for optional RTSP-over-HTTP tunneling.)\n";
+  } else {
+    *env << "\n(RTSP-over-HTTP tunneling is not available.)\n";
+  }
+
+  // Now, enter the event loop:
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
diff --git a/testProgs/COPYING b/testProgs/COPYING
new file mode 120000
index 0000000..012065c
--- /dev/null
+++ b/testProgs/COPYING
@@ -0,0 +1 @@
+../COPYING
\ No newline at end of file
diff --git a/testProgs/COPYING.LESSER b/testProgs/COPYING.LESSER
new file mode 120000
index 0000000..ce9a3ce
--- /dev/null
+++ b/testProgs/COPYING.LESSER
@@ -0,0 +1 @@
+../COPYING.LESSER
\ No newline at end of file
diff --git a/testProgs/MPEG2TransportStreamIndexer.cpp b/testProgs/MPEG2TransportStreamIndexer.cpp
new file mode 100644
index 0000000..a913b98
--- /dev/null
+++ b/testProgs/MPEG2TransportStreamIndexer.cpp
@@ -0,0 +1,90 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A program that reads an existing MPEG-2 Transport Stream file,
+// and generates a separate index file that can be used - by our RTSP server
+// implementation - to support 'trick play' operations when streaming the
+// Transport Stream file.
+// main program
+
+#include <liveMedia.hh>
+#include <BasicUsageEnvironment.hh>
+
+void afterPlaying(void* clientData); // forward
+
+UsageEnvironment* env;
+char const* programName;
+
+void usage() {
+  *env << "usage: " << programName << " <transport-stream-file-name>\n";
+  *env << "\twhere <transport-stream-file-name> ends with \".ts\"\n";
+  exit(1);
+}
+
+int main(int argc, char const** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Parse the command line:
+  programName = argv[0];
+  if (argc != 2) usage();
+
+  char const* inputFileName = argv[1];
+  // Check whether the input file name ends with ".ts":
+  int len = strlen(inputFileName);
+  if (len < 4 || strcmp(&inputFileName[len-3], ".ts") != 0) {
+    *env << "ERROR: input file name \"" << inputFileName
+	 << "\" does not end with \".ts\"\n";
+    usage();
+  }
+
+  // Open the input file (as a 'byte stream file source'):
+  FramedSource* input
+    = ByteStreamFileSource::createNew(*env, inputFileName, TRANSPORT_PACKET_SIZE);
+  if (input == NULL) {
+    *env << "Failed to open input file \"" << inputFileName << "\" (does it exist?)\n";
+    exit(1);
+  }
+
+  // Create a filter that indexes the input Transport Stream data:
+  FramedSource* indexer
+    = MPEG2IFrameIndexFromTransportStream::createNew(*env, input);
+
+  // The output file name is the same as the input file name, except with suffix ".tsx":
+  char* outputFileName = new char[len+2]; // allow for trailing x\0
+  sprintf(outputFileName, "%sx", inputFileName);
+
+  // Open the output file (for writing), as a 'file sink':
+  MediaSink* output = FileSink::createNew(*env, outputFileName);
+  if (output == NULL) {
+    *env << "Failed to open output file \"" << outputFileName << "\"\n";
+    exit(1);
+  }
+
+  // Start playing, to generate the output index file:
+  *env << "Writing index file \"" << outputFileName << "\"...";
+  output->startPlaying(*indexer, afterPlaying, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done\n";
+  exit(0);
+}
diff --git a/testProgs/Makefile.head b/testProgs/Makefile.head
new file mode 100644
index 0000000..e81e1ba
--- /dev/null
+++ b/testProgs/Makefile.head
@@ -0,0 +1,7 @@
+INCLUDES = -I../UsageEnvironment/include -I../groupsock/include -I../liveMedia/include -I../BasicUsageEnvironment/include
+# Default library filename suffixes for each library that we link with.  The "config.*" file might redefine these later.
+libliveMedia_LIB_SUFFIX = $(LIB_SUFFIX)
+libBasicUsageEnvironment_LIB_SUFFIX = $(LIB_SUFFIX)
+libUsageEnvironment_LIB_SUFFIX = $(LIB_SUFFIX)
+libgroupsock_LIB_SUFFIX = $(LIB_SUFFIX)
+##### Change the following for your environment:
diff --git a/testProgs/Makefile.tail b/testProgs/Makefile.tail
new file mode 100644
index 0000000..bab4cc5
--- /dev/null
+++ b/testProgs/Makefile.tail
@@ -0,0 +1,159 @@
+##### End of variables to change
+
+MULTICAST_STREAMER_APPS = testMP3Streamer$(EXE) testMPEG1or2VideoStreamer$(EXE) testMPEG1or2AudioVideoStreamer$(EXE) testMPEG2TransportStreamer$(EXE) testMPEG4VideoStreamer$(EXE) testH264VideoStreamer$(EXE) testH265VideoStreamer$(EXE) testDVVideoStreamer$(EXE) testWAVAudioStreamer$(EXE) testAMRAudioStreamer$(EXE) testMKVStreamer$(EXE) testOggStreamer$(EXE) vobStreamer$(EXE)
+MULTICAST_RECEIVER_APPS = testMP3Receiver$(EXE) testMPEG1or2VideoReceiver$(EXE) testMPEG2TransportReceiver$(EXE) sapWatch$(EXE)
+MULTICAST_MISC_APPS = testRelay$(EXE) testReplicator$(EXE)
+MULTICAST_APPS = $(MULTICAST_STREAMER_APPS) $(MULTICAST_RECEIVER_APPS) $(MULTICAST_MISC_APPS)
+
+UNICAST_STREAMER_APPS = testOnDemandRTSPServer$(EXE)
+UNICAST_RECEIVER_APPS = testRTSPClient$(EXE) openRTSP$(EXE) playSIP$(EXE)
+UNICAST_APPS = $(UNICAST_STREAMER_APPS) $(UNICAST_RECEIVER_APPS)
+
+HLS_APPS = testH264VideoToHLSSegments$(EXE)
+
+MISC_APPS = testMPEG1or2Splitter$(EXE) testMPEG1or2ProgramToTransportStream$(EXE) testH264VideoToTransportStream$(EXE) testH265VideoToTransportStream$(EXE) MPEG2TransportStreamIndexer$(EXE) testMPEG2TransportStreamTrickPlay$(EXE) registerRTSPStream$(EXE) testMKVSplitter$(EXE) testMPEG2TransportStreamSplitter$(EXE) mikeyParse$(EXE)
+
+PREFIX = /usr/local
+ALL = $(MULTICAST_APPS) $(UNICAST_APPS) $(HLS_APPS) $(MISC_APPS)
+all: $(ALL)
+
+extra:	testGSMStreamer$(EXE)
+
+.$(C).$(OBJ):
+	$(C_COMPILER) -c $(C_FLAGS) $<
+.$(CPP).$(OBJ):
+	$(CPLUSPLUS_COMPILER) -c $(CPLUSPLUS_FLAGS) $<
+
+MP3_STREAMER_OBJS = testMP3Streamer.$(OBJ)
+MP3_RECEIVER_OBJS = testMP3Receiver.$(OBJ)
+RELAY_OBJS = testRelay.$(OBJ)
+REPLICATOR_OBJS = testReplicator.$(OBJ)
+H264_VIDEO_TO_HLS_SEGMENTS_OBJS = testH264VideoToHLSSegments.$(OBJ)
+MPEG_1OR2_SPLITTER_OBJS = testMPEG1or2Splitter.$(OBJ)
+MPEG_1OR2_VIDEO_STREAMER_OBJS = testMPEG1or2VideoStreamer.$(OBJ)
+MPEG_1OR2_VIDEO_RECEIVER_OBJS = testMPEG1or2VideoReceiver.$(OBJ)
+MPEG2_TRANSPORT_RECEIVER_OBJS = testMPEG2TransportReceiver.$(OBJ)
+MPEG_1OR2_AUDIO_VIDEO_STREAMER_OBJS = testMPEG1or2AudioVideoStreamer.$(OBJ)
+MPEG2_TRANSPORT_STREAMER_OBJS = testMPEG2TransportStreamer.$(OBJ)
+MPEG4_VIDEO_STREAMER_OBJS = testMPEG4VideoStreamer.$(OBJ)
+H264_VIDEO_STREAMER_OBJS = testH264VideoStreamer.$(OBJ)
+H265_VIDEO_STREAMER_OBJS = testH265VideoStreamer.$(OBJ)
+DV_VIDEO_STREAMER_OBJS = testDVVideoStreamer.$(OBJ)
+WAV_AUDIO_STREAMER_OBJS = testWAVAudioStreamer.$(OBJ)
+AMR_AUDIO_STREAMER_OBJS	= testAMRAudioStreamer.$(OBJ)
+ON_DEMAND_RTSP_SERVER_OBJS	= testOnDemandRTSPServer.$(OBJ)
+MKV_STREAMER_OBJS	= testMKVStreamer.$(OBJ)
+OGG_STREAMER_OBJS	= testOggStreamer.$(OBJ)
+VOB_STREAMER_OBJS	= vobStreamer.$(OBJ)
+TEST_RTSP_CLIENT_OBJS    = testRTSPClient.$(OBJ)
+OPEN_RTSP_OBJS    = openRTSP.$(OBJ) playCommon.$(OBJ)
+PLAY_SIP_OBJS     = playSIP.$(OBJ) playCommon.$(OBJ)
+SAP_WATCH_OBJS = sapWatch.$(OBJ)
+MPEG_1OR2_PROGRAM_TO_TRANSPORT_STREAM_OBJS = testMPEG1or2ProgramToTransportStream.$(OBJ)
+H264_VIDEO_TO_TRANSPORT_STREAM_OBJS = testH264VideoToTransportStream.$(OBJ)
+H265_VIDEO_TO_TRANSPORT_STREAM_OBJS = testH265VideoToTransportStream.$(OBJ)
+MPEG2_TRANSPORT_STREAM_INDEXER_OBJS = MPEG2TransportStreamIndexer.$(OBJ)
+MPEG2_TRANSPORT_STREAM_TRICK_PLAY_OBJS = testMPEG2TransportStreamTrickPlay.$(OBJ)
+REGISTER_RTSP_STREAM_OBJS = registerRTSPStream.$(OBJ)
+TEST_MKV_SPLITTER_OBJS = testMKVSplitter.$(OBJ)
+TEST_MPEG2_TRANSPORT_STREAM_SPLITTER_OBJS = testMPEG2TransportStreamSplitter.$(OBJ)
+MIKEY_PARSE_OBJS = mikeyParse.$(OBJ)
+
+GSM_STREAMER_OBJS = testGSMStreamer.$(OBJ) testGSMEncoder.$(OBJ)
+
+openRTSP.$(CPP):	playCommon.hh
+playCommon.$(CPP):	playCommon.hh
+playSIP.$(CPP):		playCommon.hh
+
+USAGE_ENVIRONMENT_DIR = ../UsageEnvironment
+USAGE_ENVIRONMENT_LIB = $(USAGE_ENVIRONMENT_DIR)/libUsageEnvironment.$(libUsageEnvironment_LIB_SUFFIX)
+BASIC_USAGE_ENVIRONMENT_DIR = ../BasicUsageEnvironment
+BASIC_USAGE_ENVIRONMENT_LIB = $(BASIC_USAGE_ENVIRONMENT_DIR)/libBasicUsageEnvironment.$(libBasicUsageEnvironment_LIB_SUFFIX)
+LIVEMEDIA_DIR = ../liveMedia
+LIVEMEDIA_LIB = $(LIVEMEDIA_DIR)/libliveMedia.$(libliveMedia_LIB_SUFFIX)
+GROUPSOCK_DIR = ../groupsock
+GROUPSOCK_LIB = $(GROUPSOCK_DIR)/libgroupsock.$(libgroupsock_LIB_SUFFIX)
+LOCAL_LIBS =	$(LIVEMEDIA_LIB) $(GROUPSOCK_LIB) \
+		$(BASIC_USAGE_ENVIRONMENT_LIB) $(USAGE_ENVIRONMENT_LIB)
+LIBS =			$(LOCAL_LIBS) $(LIBS_FOR_CONSOLE_APPLICATION)
+
+testMP3Streamer$(EXE):	$(MP3_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MP3_STREAMER_OBJS) $(LIBS)
+testMP3Receiver$(EXE):	$(MP3_RECEIVER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MP3_RECEIVER_OBJS) $(LIBS)
+testRelay$(EXE):	$(RELAY_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(RELAY_OBJS) $(LIBS)
+testReplicator$(EXE):	$(REPLICATOR_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(REPLICATOR_OBJS) $(LIBS)
+testH264VideoToHLSSegments$(EXE):      $(H264_VIDEO_TO_HLS_SEGMENTS_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(H264_VIDEO_TO_HLS_SEGMENTS_OBJS) $(LIBS)
+testMPEG1or2Splitter$(EXE):	$(MPEG_1OR2_SPLITTER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MPEG_1OR2_SPLITTER_OBJS) $(LIBS)
+testMPEG1or2VideoStreamer$(EXE):	$(MPEG_1OR2_VIDEO_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MPEG_1OR2_VIDEO_STREAMER_OBJS) $(LIBS)
+testMPEG1or2VideoReceiver$(EXE):	$(MPEG_1OR2_VIDEO_RECEIVER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MPEG_1OR2_VIDEO_RECEIVER_OBJS) $(LIBS)
+testMPEG1or2AudioVideoStreamer$(EXE):	$(MPEG_1OR2_AUDIO_VIDEO_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MPEG_1OR2_AUDIO_VIDEO_STREAMER_OBJS) $(LIBS)
+testMPEG2TransportStreamer$(EXE):	$(MPEG2_TRANSPORT_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MPEG2_TRANSPORT_STREAMER_OBJS) $(LIBS)
+testMPEG2TransportReceiver$(EXE):	$(MPEG2_TRANSPORT_RECEIVER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MPEG2_TRANSPORT_RECEIVER_OBJS) $(LIBS)
+testMPEG4VideoStreamer$(EXE):	$(MPEG4_VIDEO_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MPEG4_VIDEO_STREAMER_OBJS) $(LIBS)
+testH264VideoStreamer$(EXE):	$(H264_VIDEO_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(H264_VIDEO_STREAMER_OBJS) $(LIBS)
+testH265VideoStreamer$(EXE):	$(H265_VIDEO_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(H265_VIDEO_STREAMER_OBJS) $(LIBS)
+testDVVideoStreamer$(EXE):	$(DV_VIDEO_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(DV_VIDEO_STREAMER_OBJS) $(LIBS)
+testWAVAudioStreamer$(EXE):	$(WAV_AUDIO_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(WAV_AUDIO_STREAMER_OBJS) $(LIBS)
+testAMRAudioStreamer$(EXE):	$(AMR_AUDIO_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(AMR_AUDIO_STREAMER_OBJS) $(LIBS)
+testOnDemandRTSPServer$(EXE):	$(ON_DEMAND_RTSP_SERVER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(ON_DEMAND_RTSP_SERVER_OBJS) $(LIBS)
+testMKVStreamer$(EXE):	$(MKV_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MKV_STREAMER_OBJS) $(LIBS)
+testOggStreamer$(EXE):	$(OGG_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(OGG_STREAMER_OBJS) $(LIBS)
+vobStreamer$(EXE):	$(VOB_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(VOB_STREAMER_OBJS) $(LIBS)
+testRTSPClient$(EXE):	$(TEST_RTSP_CLIENT_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(TEST_RTSP_CLIENT_OBJS) $(LIBS)
+openRTSP$(EXE):	$(OPEN_RTSP_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(OPEN_RTSP_OBJS) $(LIBS)
+playSIP$(EXE):	$(PLAY_SIP_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(PLAY_SIP_OBJS) $(LIBS)
+sapWatch$(EXE):	$(SAP_WATCH_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(SAP_WATCH_OBJS) $(LIBS)
+testMPEG1or2ProgramToTransportStream$(EXE):	$(MPEG_1OR2_PROGRAM_TO_TRANSPORT_STREAM_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MPEG_1OR2_PROGRAM_TO_TRANSPORT_STREAM_OBJS) $(LIBS)
+testH264VideoToTransportStream$(EXE):	$(H264_VIDEO_TO_TRANSPORT_STREAM_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(H264_VIDEO_TO_TRANSPORT_STREAM_OBJS) $(LIBS)
+testH265VideoToTransportStream$(EXE):	$(H265_VIDEO_TO_TRANSPORT_STREAM_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(H265_VIDEO_TO_TRANSPORT_STREAM_OBJS) $(LIBS)
+MPEG2TransportStreamIndexer$(EXE):	$(MPEG2_TRANSPORT_STREAM_INDEXER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MPEG2_TRANSPORT_STREAM_INDEXER_OBJS) $(LIBS)
+testMPEG2TransportStreamTrickPlay$(EXE):	$(MPEG2_TRANSPORT_STREAM_TRICK_PLAY_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MPEG2_TRANSPORT_STREAM_TRICK_PLAY_OBJS) $(LIBS)
+registerRTSPStream$(EXE):	$(REGISTER_RTSP_STREAM_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(REGISTER_RTSP_STREAM_OBJS) $(LIBS)
+testMKVSplitter$(EXE):	$(TEST_MKV_SPLITTER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(TEST_MKV_SPLITTER_OBJS) $(LIBS)
+testMPEG2TransportStreamSplitter$(EXE): $(TEST_MPEG2_TRANSPORT_STREAM_SPLITTER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(TEST_MPEG2_TRANSPORT_STREAM_SPLITTER_OBJS) $(LIBS)
+mikeyParse$(EXE):    $(MIKEY_PARSE_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MIKEY_PARSE_OBJS) $(LIBS)
+
+testGSMStreamer$(EXE):	$(GSM_STREAMER_OBJS) $(LOCAL_LIBS)
+	$(LINK)$@ $(CONSOLE_LINK_OPTS) $(GSM_STREAMER_OBJS) $(LIBS)
+
+clean:
+	-rm -rf *.$(OBJ) $(ALL) core *.core *~ include/*~
+
+install: $(ALL)
+	  install -d $(DESTDIR)$(PREFIX)/bin
+	  install -m 755 $(ALL) $(DESTDIR)$(PREFIX)/bin
+
+##### Any additional, platform-specific rules come here:
diff --git a/testProgs/mikeyParse.cpp b/testProgs/mikeyParse.cpp
new file mode 100644
index 0000000..47931df
--- /dev/null
+++ b/testProgs/mikeyParse.cpp
@@ -0,0 +1,414 @@
+// Parses MIKEY data (from Base64)
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <Base64.hh>
+#include <NetCommon.h>
+
+static u_int32_t get4Bytes(u_int8_t const*& ptr) {
+  u_int32_t result = (ptr[0]<<24)|(ptr[1]<<16)|(ptr[2]<<8)|ptr[3];
+  ptr += 4;
+  return result;
+}
+
+static u_int16_t get2Bytes(u_int8_t const*& ptr) {
+  u_int16_t result = (ptr[0]<<8)|ptr[1];
+  ptr += 2;
+  return result;
+}
+
+static u_int8_t getByte(u_int8_t const*& ptr) {
+  u_int8_t result = ptr[0];
+  ptr += 1;
+  return result;
+}
+
+Boolean parseMikeyUnknown(u_int8_t const*& /*ptr*/, u_int8_t const* /*endPtr*/, u_int8_t& /*nextPayloadType*/) {
+  fprintf(stderr, "\tUnknown or unhandled payload type\n");
+  return False;
+}
+
+char const* payloadTypeName[256];
+char const* dataTypeComment[256];
+#define testSize(n) do {if (ptr + (n) > endPtr) return False; } while (0)
+
+Boolean parseMikeyHDR(u_int8_t const*& ptr, u_int8_t const* endPtr, u_int8_t& nextPayloadType) {
+  testSize(10); // up to the start of "CS ID map info"
+
+  fprintf(stderr, "\tversion: %d\n", getByte(ptr));
+
+  u_int8_t const dataType = getByte(ptr);
+  fprintf(stderr, "\tdata type: %d (%s)\n", dataType, dataTypeComment[dataType]);
+
+  nextPayloadType = getByte(ptr);
+  fprintf(stderr, "\tnext payload: %d (%s)\n", nextPayloadType, payloadTypeName[nextPayloadType]);
+
+  u_int8_t const V_PRF = getByte(ptr);
+  u_int8_t const PRF = V_PRF&0x7F;
+  fprintf(stderr, "\tV:%d; PRF:%d (%s)\n", V_PRF>>7, PRF, PRF == 0 ? "MIKEY-1" : "unknown");
+
+  fprintf(stderr, "\tCSB ID:0x%08x\n", get4Bytes(ptr));
+
+  u_int8_t numCryptoSessions = getByte(ptr);
+  fprintf(stderr, "\t#CS:%d\n", numCryptoSessions);
+
+  u_int8_t const CS_ID_map_type = getByte(ptr);
+  fprintf(stderr, "\tCS ID map type:%d (%s)\n",
+	  CS_ID_map_type, CS_ID_map_type == 0 ? "SRTP-ID" : "unknown");
+  if (CS_ID_map_type != 0) return False;
+
+  fprintf(stderr, "\tCS ID map info:\n");
+  testSize(numCryptoSessions * (1+4+4)); // the size of the "CS ID map info"
+  for (u_int8_t i = 1; i <= numCryptoSessions; ++i) {
+    fprintf(stderr, "\tPolicy_no_%d: %d;\tSSRC_%d: 0x%08x; ROC_%d: 0x%08x\n",
+	    i, getByte(ptr),
+	    i, get4Bytes(ptr),
+	    i, get4Bytes(ptr));
+  }
+
+  return True;
+}
+
+static Boolean parseKeyDataSubPayload(u_int8_t const*& ptr, u_int8_t const* endPtr, u_int8_t& nextPayloadType) {
+  fprintf(stderr, "\tEncr data:\n");
+  testSize(4); // up to the start of "Key data"
+
+  nextPayloadType = getByte(ptr);
+  fprintf(stderr, "\t\tnext payload: %d (%s)\n", nextPayloadType, payloadTypeName[nextPayloadType]);
+
+  u_int8_t Type_KV = getByte(ptr);
+  u_int8_t Type = Type_KV>>4;
+  u_int8_t KV = Type_KV&0x0F;
+  fprintf(stderr, "\t\tType: %d (%s)\n", Type,
+	  Type == 0 ? "TGK" : Type == 1 ? "TGK+SALT" : Type == 2 ? "TEK" : Type == 3 ? "TEK+SALT" : "unknown");
+  if (Type > 3) return False;
+  Boolean hasSalt = Type == 1 || Type == 3;
+  
+  fprintf(stderr, "\t\tKey Validity: %d (%s)\n", KV,
+	  KV == 0 ? "NULL" : KV == 1 ? "SPI/MKI" : KV == 2 ? "Interval" : "unknown");
+  Boolean hasKV = KV != 0;
+
+  u_int16_t keyDataLen = get2Bytes(ptr);
+  fprintf(stderr, "\t\tKey data len: %d\n", keyDataLen);
+  
+  testSize(keyDataLen);
+  fprintf(stderr, "\t\tKey data: ");
+  for (unsigned i = 0; i < keyDataLen; ++i) fprintf(stderr, ":%02x", getByte(ptr));
+  fprintf(stderr, "\n");
+  
+  if (hasSalt) {
+    testSize(2);
+    u_int16_t saltLen = get2Bytes(ptr);
+    fprintf(stderr, "\t\tSalt len: %d\n", saltLen);
+
+    testSize(saltLen);
+    fprintf(stderr, "\t\tSalt data: ");
+    for (unsigned i = 0; i < saltLen; ++i) fprintf(stderr, ":%02x", getByte(ptr));
+    fprintf(stderr, "\n");
+  }
+
+  if (hasKV) {
+    fprintf(stderr, "\t\tKV (key validity) data:\n");
+    if (KV == 1) { // SPI/MKI
+      testSize(1);
+      u_int8_t SPILength = getByte(ptr);
+      fprintf(stderr, "\t\t\tSPI Length: %d\n", SPILength);
+
+      testSize(SPILength);
+      fprintf(stderr, "\t\t\tSPI: ");
+      for (unsigned i = 0; i < SPILength; ++i) fprintf(stderr, ":%02x", getByte(ptr));
+      fprintf(stderr, "\n");
+    } else if (KV == 2) { // Interval
+      testSize(1);
+      u_int8_t VFLength = getByte(ptr);
+      fprintf(stderr, "\t\t\tVF Length: %d\n", VFLength);
+
+      testSize(VFLength);
+      fprintf(stderr, "\t\t\tVF: ");
+      for (unsigned i = 0; i < VFLength; ++i) fprintf(stderr, ":%02x", getByte(ptr));
+      fprintf(stderr, "\n");
+
+      testSize(1);
+      u_int8_t VTLength = getByte(ptr);
+      fprintf(stderr, "\t\t\tVT Length: %d\n", VTLength);
+
+      testSize(VTLength);
+      fprintf(stderr, "\t\t\tVT: ");
+      for (unsigned i = 0; i < VTLength; ++i) fprintf(stderr, ":%02x", getByte(ptr));
+      fprintf(stderr, "\n");
+    }
+  }
+    
+  return True;
+}
+
+Boolean parseMikeyKEMAC(u_int8_t const*& ptr, u_int8_t const* endPtr, u_int8_t& nextPayloadType) {
+  testSize(4); // up to the start of "Encr data"
+
+  nextPayloadType = getByte(ptr);
+  fprintf(stderr, "\tnext payload: %d (%s)\n", nextPayloadType, payloadTypeName[nextPayloadType]);
+
+  u_int8_t encrAlg = getByte(ptr);
+  fprintf(stderr, "\tEncr alg: %d (%s)\n", encrAlg,
+	  encrAlg == 0 ? "NULL" : encrAlg == 1 ? "AES-CM-128" : encrAlg == 2 ? "AES-KW-128" : "unknown");
+
+  u_int16_t encrDataLen = get2Bytes(ptr);
+  fprintf(stderr, "\tencr data len: %d\n", encrDataLen);
+
+  testSize(encrDataLen + 1/*allow for "Mac alg"*/);
+  u_int8_t const* endOfKeyData = ptr + encrDataLen;
+  
+  // Allow for multiple key data sub-payloads
+  while (ptr < endOfKeyData) {
+    if (!parseKeyDataSubPayload(ptr, endOfKeyData, nextPayloadType)) return False;
+  }
+
+  u_int8_t macAlg = getByte(ptr);
+  fprintf(stderr, "\tMAC alg: %d (%s)\n", macAlg,
+	  macAlg == 0 ? "NULL" : macAlg == 1 ? "HMAC-SHA-1-160" : "unknown");
+  if (macAlg > 1) return False;
+  if (macAlg == 1) { // HMAC-SHA-1-160
+    unsigned const macLen = 160/8; // bytes
+    fprintf(stderr, "\t\tMAC: ");
+    for (unsigned i = 0; i < macLen; ++i) fprintf(stderr, ":%02x", getByte(ptr));
+    fprintf(stderr, "\n");
+  }
+
+  return True;
+}
+
+Boolean parseMikeyT(u_int8_t const*& ptr, u_int8_t const* endPtr, u_int8_t& nextPayloadType) {
+  testSize(2); // up to the start of "TS value"
+
+  nextPayloadType = getByte(ptr);
+  fprintf(stderr, "\tnext payload: %d (%s)\n", nextPayloadType, payloadTypeName[nextPayloadType]);
+
+  u_int8_t TS_type = getByte(ptr);
+  unsigned TS_value_len;
+  fprintf(stderr, "\tTS type: %d (", TS_type);
+  switch (TS_type) {
+    case 0: {
+      fprintf(stderr, "NTP-UTC)\n");
+      TS_value_len = 8; // 64 bits
+      break;
+    }
+    case 1: {
+      fprintf(stderr, "NTP)\n");
+      TS_value_len = 8; // 64 bits
+      break;
+    }
+    case 2: {
+      fprintf(stderr, "COUNTER)\n");
+      TS_value_len = 4; // 32 bits
+      break;
+    }
+    default: {
+      fprintf(stderr, "unknown)\n");
+      return False;
+    }
+  }
+
+  testSize(TS_value_len);
+  fprintf(stderr, "\tTS value:");
+  for (unsigned i = 0; i < TS_value_len; ++i) fprintf(stderr, ":%02x", getByte(ptr));
+  fprintf(stderr, "\n");
+
+  return True;
+}
+
+#define MAX_SRTP_POLICY_PARAM_TYPE 12
+static char const* SRTPPolicyParamTypeExplanation[] = {
+      "Encryption algorithm",
+      "Session Encryption key length",
+      "Authentication algorithm",
+      "Session Authentication key length",
+      "Session Salt key length",
+      "SRTP Pseudo Random Function",
+      "Key derivation rate",
+      "SRTP encryption off/on",
+      "SRTCP encryption off/on",
+      "Sender's FEC order",
+      "SRTP authentication off/on",
+      "Authentication tag length",
+      "SRTP prefix length",
+};
+
+static Boolean parseSRTPPolicyParam(u_int8_t const*& ptr, u_int8_t const* endPtr) {
+  fprintf(stderr, "\tPolicy param:\n");
+  while (ptr < endPtr) {
+    testSize(2);
+
+    u_int8_t ppType = getByte(ptr);
+    fprintf(stderr, "\t\ttype: %d (%s); ", ppType,
+	    ppType > MAX_SRTP_POLICY_PARAM_TYPE ? "unknown" : SRTPPolicyParamTypeExplanation[ppType]);
+
+    u_int8_t ppLen = getByte(ptr);
+    fprintf(stderr, "length: %d; value: ", ppLen);
+
+    testSize(ppLen);
+    u_int8_t ppVal = 0xFF;
+    if (ppLen == 1) {
+      ppVal = getByte(ptr);
+      fprintf(stderr, "%d", ppVal);
+    } else {
+      for (unsigned j = 0; j < ppLen; ++j) fprintf(stderr, ":%02x", getByte(ptr));
+    }
+
+    switch (ppType) {
+      case 0: { // Encryption algorithm
+	fprintf(stderr, " (%s)",
+		ppVal == 0 ? "NULL" : ppVal == 1 ? "AES-CM" : ppVal == 2 ? "AES-F8" : "unknown");
+        break;
+      }
+      case 2: { // Authentication algorithm
+	fprintf(stderr, " (%s)",
+		ppVal == 0 ? "NULL" : ppVal == 1 ? "HMAC-SHA-1" : "unknown");
+        break;
+      }
+      case 5: { // SRTP Pseudo Random Function
+	fprintf(stderr, " (%s)",
+		ppVal == 0 ? "AES-CM" : "unknown");
+        break;
+      }
+      case 9: { // sender's FEC order
+	fprintf(stderr, " (%s)",
+		ppVal == 0 ? "First FEC, then SRTP" : "unknown");
+        break;
+      }
+    }
+    fprintf(stderr, "\n");
+  }
+
+  return True;
+}
+
+Boolean parseMikeySP(u_int8_t const*& ptr, u_int8_t const* endPtr, u_int8_t& nextPayloadType) {
+  testSize(2); // up to the start of "Policy param"
+
+  nextPayloadType = getByte(ptr);
+  fprintf(stderr, "\tnext payload: %d (%s)\n", nextPayloadType, payloadTypeName[nextPayloadType]);
+
+  fprintf(stderr, "\tPolicy number: %d\n", getByte(ptr));
+
+  u_int8_t protocolType = getByte(ptr);
+  fprintf(stderr, "\tProtocol type: %d (%s)\n", protocolType, protocolType == 0 ? "SRTP" : "unknown");
+  if (protocolType != 0) return False;
+
+  u_int16_t policyParam_len = get2Bytes(ptr);
+  fprintf(stderr, "\tPolicy param len: %d\n", policyParam_len);
+
+  testSize(policyParam_len);
+  return parseSRTPPolicyParam(ptr, ptr + policyParam_len);
+}
+
+Boolean parseMikeyRAND(u_int8_t const*& ptr, u_int8_t const* endPtr, u_int8_t& nextPayloadType) {
+  testSize(2); // up to the start of "RAND"
+
+  nextPayloadType = getByte(ptr);
+  fprintf(stderr, "\tnext payload: %d (%s)\n", nextPayloadType, payloadTypeName[nextPayloadType]);
+
+  u_int8_t RAND_len = getByte(ptr);
+  fprintf(stderr, "\tRAND len: %d", RAND_len);
+
+  testSize(RAND_len);
+  fprintf(stderr, "\tRAND:");
+  for (unsigned i = 0; i < RAND_len; ++i) fprintf(stderr, ":%02x", getByte(ptr));
+  fprintf(stderr, "\n");
+
+  return True;
+}
+
+typedef Boolean (parseMikeyPayloadFunc)(u_int8_t const*& ptr, u_int8_t const* endPtr,
+					u_int8_t& nextPayloadType);
+parseMikeyPayloadFunc* payloadParser[256];
+
+int main(int argc, char** argv) {
+  if (argc != 2) {
+    fprintf(stderr, "Usage: %s <base64Data>\n", argv[0]);
+    exit(1);
+  }
+  char const* base64Data = argv[1];
+
+  unsigned mikeyDataSize;
+  u_int8_t* mikeyData = base64Decode(base64Data, mikeyDataSize);
+
+  fprintf(stderr, "Base64Data \"%s\" produces %d bytes of MIKEY data:\n", base64Data, mikeyDataSize);
+  for (unsigned i = 0; i < mikeyDataSize; ++i) fprintf(stderr, ":%02x", mikeyData[i]);
+  fprintf(stderr, "\n");
+
+  for (unsigned i = 0; i < 256; ++i) {
+    payloadTypeName[i] = "unknown or unhandled";
+    payloadParser[i] = parseMikeyUnknown;
+
+    dataTypeComment[i] = "unknown";
+  }
+
+  // Populate known payload types:
+  payloadTypeName[0] = "Last payload";
+
+  payloadTypeName[1] = "KEMAC";
+  payloadParser[1] = parseMikeyKEMAC;
+
+  payloadTypeName[2] = "PKE";
+
+  payloadTypeName[3] = "DH";
+
+  payloadTypeName[4] = "SIGN";
+
+  payloadTypeName[5] = "T";
+  payloadParser[5] = parseMikeyT;
+
+  payloadTypeName[6] = "ID";
+
+  payloadTypeName[7] = "CERT";
+
+  payloadTypeName[8] = "CHASH";
+
+  payloadTypeName[9] = "V";
+
+  payloadTypeName[10] = "SP";
+  payloadParser[10] = parseMikeySP;
+
+  payloadTypeName[11] = "RAND";
+  payloadParser[11] = parseMikeyRAND;
+
+  payloadTypeName[12] = "ERR";
+
+  payloadTypeName[20] = "Key data";
+
+  payloadTypeName[21] = "General Ext.";
+
+  // Populate known data types:
+  dataTypeComment[0] = "Initiator's pre-shared key message";
+  dataTypeComment[1] = "Verification message of a pre-shared key message";
+  dataTypeComment[2] = "Initiator's public-key transport message";
+  dataTypeComment[3] = "Verification message of a public-key message";
+  dataTypeComment[4] = "Initiator's DH exchange message";
+  dataTypeComment[5] = "Responder's DH exchange message";
+  dataTypeComment[6] = "Error message";
+
+  u_int8_t const* ptr = mikeyData;
+  u_int8_t* const endPtr = &mikeyData[mikeyDataSize];
+  u_int8_t nextPayloadType;
+
+  do {
+    // Begin by parsing an initial "HDR":
+    fprintf(stderr, "HDR:\n");
+    if (!parseMikeyHDR(ptr, endPtr, nextPayloadType)) break;
+  
+    // Then parse each successive payload:
+    while (nextPayloadType != 0 /* Last payload */) {
+      fprintf(stderr, "%s:\n", payloadTypeName[nextPayloadType]);
+      if (!(*payloadParser[nextPayloadType])(ptr, endPtr, nextPayloadType)) break;
+    }
+  } while (0);
+
+  if (ptr < endPtr) {
+    fprintf(stderr, "+%ld bytes of unparsed data: ", endPtr-ptr);
+    while (ptr < endPtr) fprintf(stderr, ":%02x", *ptr++);
+    fprintf(stderr, "\n");
+  }
+
+  delete[] mikeyData;
+  return 0;
+}
diff --git a/testProgs/openRTSP.cpp b/testProgs/openRTSP.cpp
new file mode 100644
index 0000000..d57a96c
--- /dev/null
+++ b/testProgs/openRTSP.cpp
@@ -0,0 +1,68 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A RTSP client application that opens a RTSP URL argument,
+// and extracts and records the data from each incoming RTP stream.
+//
+// NOTE: If you want to develop your own RTSP client application (or embed RTSP client functionality into your own application),
+// then we don't recommend using this code as a model, because it is too complex (with many options).
+// Instead, we recommend using the "testRTSPClient" application code as a model.
+
+#include "playCommon.hh"
+
+RTSPClient* ourRTSPClient = NULL;
+Medium* createClient(UsageEnvironment& env, char const* url, int verbosityLevel, char const* applicationName) {
+  extern portNumBits tunnelOverHTTPPortNum;
+  return ourRTSPClient = RTSPClient::createNew(env, url, verbosityLevel, applicationName, tunnelOverHTTPPortNum);
+}
+
+void assignClient(Medium* client) {
+  ourRTSPClient = (RTSPClient*)client;
+}
+
+void getOptions(RTSPClient::responseHandler* afterFunc) { 
+  ourRTSPClient->sendOptionsCommand(afterFunc, ourAuthenticator);
+}
+
+void getSDPDescription(RTSPClient::responseHandler* afterFunc) {
+  ourRTSPClient->sendDescribeCommand(afterFunc, ourAuthenticator);
+}
+
+void setupSubsession(MediaSubsession* subsession, Boolean streamUsingTCP, Boolean forceMulticastOnUnspecified, RTSPClient::responseHandler* afterFunc) {
+  
+  ourRTSPClient->sendSetupCommand(*subsession, afterFunc, False, streamUsingTCP, forceMulticastOnUnspecified, ourAuthenticator);
+}
+
+void startPlayingSession(MediaSession* session, double start, double end, float scale, RTSPClient::responseHandler* afterFunc) {
+  ourRTSPClient->sendPlayCommand(*session, afterFunc, start, end, scale, ourAuthenticator);
+}
+
+void startPlayingSession(MediaSession* session, char const* absStartTime, char const* absEndTime, float scale, RTSPClient::responseHandler* afterFunc) {
+  ourRTSPClient->sendPlayCommand(*session, afterFunc, absStartTime, absEndTime, scale, ourAuthenticator);
+}
+
+void tearDownSession(MediaSession* session, RTSPClient::responseHandler* afterFunc) {
+  ourRTSPClient->sendTeardownCommand(*session, afterFunc, ourAuthenticator);
+}
+
+void setUserAgentString(char const* userAgentString) {
+  ourRTSPClient->setUserAgentString(userAgentString);
+}
+
+Boolean allowProxyServers = False;
+Boolean controlConnectionUsesTCP = True;
+Boolean supportCodecSelection = False;
+char const* clientProtocolName = "RTSP";
diff --git a/testProgs/playCommon.cpp b/testProgs/playCommon.cpp
new file mode 100644
index 0000000..5dde5cf
--- /dev/null
+++ b/testProgs/playCommon.cpp
@@ -0,0 +1,1544 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A common framework, used for the "openRTSP" and "playSIP" applications
+// Implementation
+//
+// NOTE: If you want to develop your own RTSP client application (or embed RTSP client functionality into your own application),
+// then we don't recommend using this code as a model, because it is too complex (with many options).
+// Instead, we recommend using the "testRTSPClient" application code as a model.
+
+#include "playCommon.hh"
+#include "BasicUsageEnvironment.hh"
+#include "GroupsockHelper.hh"
+
+#if defined(__WIN32__) || defined(_WIN32)
+#define snprintf _snprintf
+#else
+#include <signal.h>
+#define USE_SIGNALS 1
+#endif
+
+// Forward function definitions:
+void continueAfterClientCreation0(RTSPClient* client, Boolean requestStreamingOverTCP);
+void continueAfterClientCreation1();
+void continueAfterOPTIONS(RTSPClient* client, int resultCode, char* resultString);
+void continueAfterDESCRIBE(RTSPClient* client, int resultCode, char* resultString);
+void continueAfterSETUP(RTSPClient* client, int resultCode, char* resultString);
+void continueAfterPLAY(RTSPClient* client, int resultCode, char* resultString);
+void continueAfterTEARDOWN(RTSPClient* client, int resultCode, char* resultString);
+
+void createOutputFiles(char const* periodicFilenameSuffix);
+void createPeriodicOutputFiles();
+void setupStreams();
+void closeMediaSinks();
+void subsessionAfterPlaying(void* clientData);
+void subsessionByeHandler(void* clientData, char const* reason);
+void sessionAfterPlaying(void* clientData = NULL);
+void sessionTimerHandler(void* clientData);
+void periodicFileOutputTimerHandler(void* clientData);
+void shutdown(int exitCode = 1);
+void signalHandlerShutdown(int sig);
+void checkForPacketArrival(void* clientData);
+void checkInterPacketGaps(void* clientData);
+void checkSessionTimeoutBrokenServer(void* clientData);
+void beginQOSMeasurement();
+
+char const* progName;
+UsageEnvironment* env;
+Medium* ourClient = NULL;
+Authenticator* ourAuthenticator = NULL;
+char const* streamURL = NULL;
+MediaSession* session = NULL;
+TaskToken sessionTimerTask = NULL;
+TaskToken sessionTimeoutBrokenServerTask = NULL;
+TaskToken arrivalCheckTimerTask = NULL;
+TaskToken interPacketGapCheckTimerTask = NULL;
+TaskToken qosMeasurementTimerTask = NULL;
+TaskToken periodicFileOutputTask = NULL;
+Boolean createReceivers = True;
+Boolean outputQuickTimeFile = False;
+Boolean generateMP4Format = False;
+QuickTimeFileSink* qtOut = NULL;
+Boolean outputAVIFile = False;
+AVIFileSink* aviOut = NULL;
+Boolean audioOnly = False;
+Boolean videoOnly = False;
+char const* singleMedium = NULL;
+int verbosityLevel = 1; // by default, print verbose output
+double duration = 0;
+double durationSlop = -1.0; // extra seconds to play at the end
+double initialSeekTime = 0.0f;
+char* initialAbsoluteSeekTime = NULL;
+char* initialAbsoluteSeekEndTime = NULL;
+float scale = 1.0f;
+double endTime;
+unsigned interPacketGapMaxTime = 0;
+unsigned totNumPacketsReceived = ~0; // used if checking inter-packet gaps
+Boolean playContinuously = False;
+int simpleRTPoffsetArg = -1;
+Boolean sendOptionsRequest = True;
+Boolean sendOptionsRequestOnly = False;
+Boolean oneFilePerFrame = False;
+Boolean notifyOnPacketArrival = False;
+Boolean sendKeepAlivesToBrokenServers = False;
+unsigned sessionTimeoutParameter = 0;
+Boolean streamUsingTCP = False;
+Boolean forceMulticastOnUnspecified = False;
+unsigned short desiredPortNum = 0;
+portNumBits tunnelOverHTTPPortNum = 0;
+char* username = NULL;
+char* password = NULL;
+char* proxyServerName = NULL;
+unsigned short proxyServerPortNum = 0;
+unsigned char desiredAudioRTPPayloadFormat = 0;
+char* mimeSubtype = NULL;
+unsigned short movieWidth = 240; // default
+Boolean movieWidthOptionSet = False;
+unsigned short movieHeight = 180; // default
+Boolean movieHeightOptionSet = False;
+unsigned movieFPS = 15; // default
+Boolean movieFPSOptionSet = False;
+char const* fileNamePrefix = "";
+unsigned fileSinkBufferSize = 100000;
+unsigned socketInputBufferSize = 0;
+Boolean packetLossCompensate = False;
+Boolean syncStreams = False;
+Boolean generateHintTracks = False;
+Boolean waitForResponseToTEARDOWN = True;
+unsigned qosMeasurementIntervalMS = 0; // 0 means: Don't output QOS data
+char* userAgent = NULL;
+unsigned fileOutputInterval = 0; // seconds
+unsigned fileOutputSecondsSoFar = 0; // seconds
+Boolean createHandlerServerForREGISTERCommand = False;
+portNumBits handlerServerForREGISTERCommandPortNum = 0;
+HandlerServerForREGISTERCommand* handlerServerForREGISTERCommand;
+char* usernameForREGISTER = NULL;
+char* passwordForREGISTER = NULL;
+UserAuthenticationDatabase* authDBForREGISTER = NULL;
+
+struct timeval startTime;
+
+void usage() {
+  *env << "Usage: " << progName
+       << " [-p <startPortNum>] [-r|-q|-4|-i] [-a|-v] [-V] [-d <duration>] [-D <max-inter-packet-gap-time> [-c] [-S <offset>] [-n] [-O]"
+	   << (controlConnectionUsesTCP ? " [-t|-T <http-port>]" : "")
+       << " [-u <username> <password>"
+	   << (allowProxyServers ? " [<proxy-server> [<proxy-server-port>]]" : "")
+       << "]" << (supportCodecSelection ? " [-A <audio-codec-rtp-payload-format-code>|-M <mime-subtype-name>]" : "")
+       << " [-s <initial-seek-time>]|[-U <absolute-seek-time>] [-E <absolute-seek-end-time>] [-z <scale>] [-g user-agent]"
+       << " [-k <username-for-REGISTER> <password-for-REGISTER>]"
+       << " [-P <interval-in-seconds>] [-K]"
+       << " [-w <width> -h <height>] [-f <frames-per-second>] [-y] [-H] [-Q [<measurement-interval>]] [-F <filename-prefix>] [-b <file-sink-buffer-size>] [-B <input-socket-buffer-size>] [-I <input-interface-ip-address>] [-m] [<url>|-R [<port-num>]] (or " << progName << " -o [-V] <url>)\n";
+  shutdown();
+}
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  progName = argv[0];
+
+  gettimeofday(&startTime, NULL);
+
+#ifdef USE_SIGNALS
+  // Allow ourselves to be shut down gracefully by a SIGHUP or a SIGUSR1:
+  signal(SIGHUP, signalHandlerShutdown);
+  signal(SIGUSR1, signalHandlerShutdown);
+#endif
+
+  // unfortunately we can't use getopt() here, as Windoze doesn't have it
+  while (argc > 1) {
+    char* const opt = argv[1];
+    if (opt[0] != '-') {
+      if (argc == 2) break; // only the URL is left
+      usage();
+    }
+
+    switch (opt[1]) {
+    case 'p': { // specify start port number
+      int portArg;
+      if (sscanf(argv[2], "%d", &portArg) != 1) {
+	usage();
+      }
+      if (portArg <= 0 || portArg >= 65536 || portArg&1) {
+	*env << "bad port number: " << portArg
+		<< " (must be even, and in the range (0,65536))\n";
+	usage();
+      }
+      desiredPortNum = (unsigned short)portArg;
+      ++argv; --argc;
+      break;
+    }
+
+    case 'r': { // do not receive data (instead, just 'play' the stream(s))
+      createReceivers = False;
+      break;
+    }
+
+    case 'q': { // output a QuickTime file (to stdout)
+      outputQuickTimeFile = True;
+      break;
+    }
+
+    case '4': { // output a 'mp4'-format file (to stdout)
+      outputQuickTimeFile = True;
+      generateMP4Format = True;
+      break;
+    }
+
+    case 'i': { // output an AVI file (to stdout)
+      outputAVIFile = True;
+      break;
+    }
+
+    case 'I': { // specify input interface...
+      NetAddressList addresses(argv[2]);
+      if (addresses.numAddresses() == 0) {
+	*env << "Failed to find network address for \"" << argv[2] << "\"";
+	break;
+      }
+      ReceivingInterfaceAddr = *(unsigned*)(addresses.firstAddress()->data());
+      ++argv; --argc;
+      break;
+    }
+
+    case 'a': { // receive/record an audio stream only
+      audioOnly = True;
+      singleMedium = "audio";
+      break;
+    }
+
+    case 'v': { // receive/record a video stream only
+      videoOnly = True;
+      singleMedium = "video";
+      break;
+    }
+
+    case 'V': { // disable verbose output
+      verbosityLevel = 0;
+      break;
+    }
+
+    case 'd': { // specify duration, or how much to delay after end time
+      float arg;
+      if (sscanf(argv[2], "%g", &arg) != 1) {
+	usage();
+      }
+      if (argv[2][0] == '-') { // not "arg<0", in case argv[2] was "-0"
+	// a 'negative' argument was specified; use this for "durationSlop":
+	duration = 0; // use whatever's in the SDP
+	durationSlop = -arg;
+      } else {
+	duration = arg;
+	durationSlop = 0;
+      }
+      ++argv; --argc;
+      break;
+    }
+
+    case 'D': { // specify maximum number of seconds to wait for packets:
+      if (sscanf(argv[2], "%u", &interPacketGapMaxTime) != 1) {
+	usage();
+      }
+      ++argv; --argc;
+      break;
+    }
+
+    case 'c': { // play continuously
+      playContinuously = True;
+      break;
+    }
+
+    case 'S': { // specify an offset to use with "SimpleRTPSource"s
+      if (sscanf(argv[2], "%d", &simpleRTPoffsetArg) != 1) {
+	usage();
+      }
+      if (simpleRTPoffsetArg < 0) {
+	*env << "offset argument to \"-S\" must be >= 0\n";
+	usage();
+      }
+      ++argv; --argc;
+      break;
+    }
+
+    case 'm': { // output multiple files - one for each frame
+      oneFilePerFrame = True;
+      break;
+    }
+
+    case 'n': { // notify the user when the first data packet arrives
+      notifyOnPacketArrival = True;
+      break;
+    }
+
+    case 'O': { // Don't send an "OPTIONS" request before "DESCRIBE"
+      sendOptionsRequest = False;
+      break;
+    }
+
+    case 'o': { // Send only the "OPTIONS" request to the server
+      sendOptionsRequestOnly = True;
+      break;
+    }
+
+    case 'P': { // specify an interval (in seconds) between writing successive output files
+      int fileOutputIntervalInt;
+      if (sscanf(argv[2], "%d", &fileOutputIntervalInt) != 1 || fileOutputIntervalInt <= 0) {
+	usage();
+      }
+      fileOutputInterval = (unsigned)fileOutputIntervalInt;
+      ++argv; --argc;
+      break;
+    }
+
+    case 't': {
+      // stream RTP and RTCP over the TCP 'control' connection
+      if (controlConnectionUsesTCP) {
+	streamUsingTCP = True;
+      } else {
+	usage();
+      }
+      break;
+    }
+
+    case 'T': {
+      // stream RTP and RTCP over a HTTP connection
+      if (controlConnectionUsesTCP) {
+	if (argc > 3 && argv[2][0] != '-') {
+	  // The next argument is the HTTP server port number:
+	  if (sscanf(argv[2], "%hu", &tunnelOverHTTPPortNum) == 1
+	      && tunnelOverHTTPPortNum > 0) {
+	    ++argv; --argc;
+	    break;
+	  }
+	}
+      }
+
+      // If we get here, the option was specified incorrectly:
+      usage();
+      break;
+    }
+
+    case 'u': { // specify a username and password
+      if (argc < 4) usage(); // there's no argv[3] (for the "password")
+      username = argv[2];
+      password = argv[3];
+      argv+=2; argc-=2;
+      if (allowProxyServers && argc > 3 && argv[2][0] != '-') {
+	// The next argument is the name of a proxy server:
+	proxyServerName = argv[2];
+	++argv; --argc;
+
+	if (argc > 3 && argv[2][0] != '-') {
+	  // The next argument is the proxy server port number:
+	  if (sscanf(argv[2], "%hu", &proxyServerPortNum) != 1) {
+	    usage();
+	  }
+	  ++argv; --argc;
+	}
+      }
+
+      ourAuthenticator = new Authenticator(username, password);
+      break;
+    }
+
+    case 'k': { // specify a username and password to be used to authentication an incoming "REGISTER" command (for use with -R)
+      if (argc < 4) usage(); // there's no argv[3] (for the "password")
+      usernameForREGISTER = argv[2];
+      passwordForREGISTER = argv[3];
+      argv+=2; argc-=2;
+
+      if (authDBForREGISTER == NULL) authDBForREGISTER = new UserAuthenticationDatabase;
+      authDBForREGISTER->addUserRecord(usernameForREGISTER, passwordForREGISTER);
+      break;
+    }
+
+    case 'K': { // Send periodic 'keep-alive' requests to keep broken server sessions alive
+      sendKeepAlivesToBrokenServers = True;
+      break;
+    }
+
+    case 'A': { // specify a desired audio RTP payload format
+      unsigned formatArg;
+      if (sscanf(argv[2], "%u", &formatArg) != 1
+	  || formatArg >= 96) {
+	usage();
+      }
+      desiredAudioRTPPayloadFormat = (unsigned char)formatArg;
+      ++argv; --argc;
+      break;
+    }
+
+    case 'M': { // specify a MIME subtype for a dynamic RTP payload type
+      mimeSubtype = argv[2];
+      if (desiredAudioRTPPayloadFormat==0) desiredAudioRTPPayloadFormat =96;
+      ++argv; --argc;
+      break;
+    }
+
+    case 'w': { // specify a width (pixels) for an output QuickTime or AVI movie
+      if (sscanf(argv[2], "%hu", &movieWidth) != 1) {
+	usage();
+      }
+      movieWidthOptionSet = True;
+      ++argv; --argc;
+      break;
+    }
+
+    case 'h': { // specify a height (pixels) for an output QuickTime or AVI movie
+      if (sscanf(argv[2], "%hu", &movieHeight) != 1) {
+	usage();
+      }
+      movieHeightOptionSet = True;
+      ++argv; --argc;
+      break;
+    }
+
+    case 'f': { // specify a frame rate (per second) for an output QT or AVI movie
+      if (sscanf(argv[2], "%u", &movieFPS) != 1) {
+	usage();
+      }
+      movieFPSOptionSet = True;
+      ++argv; --argc;
+      break;
+    }
+
+    case 'F': { // specify a prefix for the audio and video output files
+      fileNamePrefix = argv[2];
+      ++argv; --argc;
+      break;
+    }
+
+    case 'g': { // specify a user agent name to use in outgoing requests
+      userAgent = argv[2];
+      ++argv; --argc;
+      break;
+    }
+
+    case 'b': { // specify the size of buffers for "FileSink"s
+      if (sscanf(argv[2], "%u", &fileSinkBufferSize) != 1) {
+	usage();
+      }
+      ++argv; --argc;
+      break;
+    }
+
+    case 'B': { // specify the size of input socket buffers
+      if (sscanf(argv[2], "%u", &socketInputBufferSize) != 1) {
+	usage();
+      }
+      ++argv; --argc;
+      break;
+    }
+
+    // Note: The following option is deprecated, and may someday be removed:
+    case 'l': { // try to compensate for packet loss by repeating frames
+      packetLossCompensate = True;
+      break;
+    }
+
+    case 'y': { // synchronize audio and video streams
+      syncStreams = True;
+      break;
+    }
+
+    case 'H': { // generate hint tracks (as well as the regular data tracks)
+      generateHintTracks = True;
+      break;
+    }
+
+    case 'Q': { // output QOS measurements
+      qosMeasurementIntervalMS = 1000; // default: 1 second
+
+      if (argc > 3 && argv[2][0] != '-') {
+	// The next argument is the measurement interval,
+	// in multiples of 100 ms
+	if (sscanf(argv[2], "%u", &qosMeasurementIntervalMS) != 1) {
+	  usage();
+	}
+	qosMeasurementIntervalMS *= 100;
+	++argv; --argc;
+      }
+      break;
+    }
+
+    case 's': { // specify initial seek time (trick play)
+      double arg;
+      if (sscanf(argv[2], "%lg", &arg) != 1 || arg < 0) {
+	usage();
+      }
+      initialSeekTime = arg;
+      ++argv; --argc;
+      break;
+    }
+
+    case 'U': {
+      // specify initial absolute seek time (trick play), using a string of the form "YYYYMMDDTHHMMSSZ" or "YYYYMMDDTHHMMSS.<frac>Z"
+      initialAbsoluteSeekTime = argv[2];
+      ++argv; --argc;
+      break;
+    }
+
+    case 'E': {
+      // specify initial absolute seek END time (trick play), using a string of the form "YYYYMMDDTHHMMSSZ" or "YYYYMMDDTHHMMSS.<frac>Z"
+      initialAbsoluteSeekEndTime = argv[2];
+      ++argv; --argc;
+      break;
+    }
+    case 'z': { // scale (trick play)
+      float arg;
+      if (sscanf(argv[2], "%g", &arg) != 1 || arg == 0.0f) {
+	usage();
+      }
+      scale = arg;
+      ++argv; --argc;
+      break;
+    }
+
+    case 'R': {
+      // set up a handler server for incoming "REGISTER" commands
+      createHandlerServerForREGISTERCommand = True;
+      if (argc > 2 && argv[2][0] != '-') {
+	// The next argument is the REGISTER handler server port number:
+	if (sscanf(argv[2], "%hu", &handlerServerForREGISTERCommandPortNum) == 1 && handlerServerForREGISTERCommandPortNum > 0) {
+	  ++argv; --argc;
+	  break;
+	}
+      }
+      break;
+    }
+
+    case 'C': {
+      forceMulticastOnUnspecified = True;
+      break;
+    }
+
+    default: {
+      *env << "Invalid option: " << opt << "\n";
+      usage();
+      break;
+    }
+    }
+
+    ++argv; --argc;
+  }
+
+  // There must be exactly one "rtsp://" URL at the end (unless '-R' was used, in which case there's no URL)
+  if (!( (argc == 2 && !createHandlerServerForREGISTERCommand) || (argc == 1 && createHandlerServerForREGISTERCommand) )) usage();
+  if (outputQuickTimeFile && outputAVIFile) {
+    *env << "The -i and -q (or -4) options cannot both be used!\n";
+    usage();
+  }
+  Boolean outputCompositeFile = outputQuickTimeFile || outputAVIFile;
+  if (!createReceivers && (outputCompositeFile || oneFilePerFrame || fileOutputInterval > 0)) {
+    *env << "The -r option cannot be used with -q, -4, -i, -m, or -P!\n";
+    usage();
+  }
+  if (oneFilePerFrame && fileOutputInterval > 0) {
+    *env << "The -m and -P options cannot both be used!\n";
+    usage();
+  }
+  if (outputCompositeFile && !movieWidthOptionSet) {
+    *env << "Warning: The -q, -4 or -i option was used, but not -w.  Assuming a video width of "
+	 << movieWidth << " pixels\n";
+  }
+  if (outputCompositeFile && !movieHeightOptionSet) {
+    *env << "Warning: The -q, -4 or -i option was used, but not -h.  Assuming a video height of "
+	 << movieHeight << " pixels\n";
+  }
+  if (outputCompositeFile && !movieFPSOptionSet) {
+    *env << "Warning: The -q, -4 or -i option was used, but not -f.  Assuming a video frame rate of "
+	 << movieFPS << " frames-per-second\n";
+  }
+  if (audioOnly && videoOnly) {
+    *env << "The -a and -v options cannot both be used!\n";
+    usage();
+  }
+  if (sendOptionsRequestOnly && !sendOptionsRequest) {
+    *env << "The -o and -O options cannot both be used!\n";
+    usage();
+  }
+  if (initialAbsoluteSeekTime != NULL && initialSeekTime != 0.0f) {
+    *env << "The -s and -U options cannot both be used!\n";
+    usage();
+  }
+  if (initialAbsoluteSeekTime == NULL && initialAbsoluteSeekEndTime != NULL) {
+    *env << "The -E option requires the -U option!\n";
+    usage();
+  }
+  if (authDBForREGISTER != NULL && !createHandlerServerForREGISTERCommand) {
+    *env << "If \"-k <username> <password>\" is used, then -R (or \"-R <port-num>\") must also be used!\n";
+    usage();
+  }
+  if (tunnelOverHTTPPortNum > 0) {
+    if (streamUsingTCP) {
+      *env << "The -t and -T options cannot both be used!\n";
+      usage();
+    } else {
+      streamUsingTCP = True;
+    }
+  }
+  if (!createReceivers && notifyOnPacketArrival) {
+    *env << "Warning: Because we're not receiving stream data, the -n flag has no effect\n";
+  }
+  if (durationSlop < 0) {
+    // This parameter wasn't set, so use a default value.
+    // If we're measuring QOS stats, then don't add any slop, to avoid
+    // having 'empty' measurement intervals at the end.
+    durationSlop = qosMeasurementIntervalMS > 0 ? 0.0 : 5.0;
+  }
+
+  streamURL = argv[1];
+
+  // Create (or arrange to create) our client object:
+  if (createHandlerServerForREGISTERCommand) {
+    handlerServerForREGISTERCommand
+      = HandlerServerForREGISTERCommand::createNew(*env, continueAfterClientCreation0,
+						   handlerServerForREGISTERCommandPortNum, authDBForREGISTER,
+						   verbosityLevel, progName);
+    if (handlerServerForREGISTERCommand == NULL) {
+      *env << "Failed to create a server for handling incoming \"REGISTER\" commands: " << env->getResultMsg() << "\n";
+      shutdown();
+    } else {
+      *env << "Awaiting an incoming \"REGISTER\" command on port " << handlerServerForREGISTERCommand->serverPortNum() << "\n";
+    }
+  } else {
+    ourClient = createClient(*env, streamURL, verbosityLevel, progName);
+    if (ourClient == NULL) {
+      *env << "Failed to create " << clientProtocolName << " client: " << env->getResultMsg() << "\n";
+      shutdown();
+    }
+    continueAfterClientCreation1();
+  }
+
+  // All subsequent activity takes place within the event loop:
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void continueAfterClientCreation0(RTSPClient* newRTSPClient, Boolean requestStreamingOverTCP) {
+  if (newRTSPClient == NULL) return;
+
+  streamUsingTCP = requestStreamingOverTCP;
+
+  assignClient(ourClient = newRTSPClient);
+  streamURL = newRTSPClient->url();
+
+  // Having handled one "REGISTER" command (giving us a "rtsp://" URL to stream from), we don't handle any more:
+  Medium::close(handlerServerForREGISTERCommand); handlerServerForREGISTERCommand = NULL;
+
+  continueAfterClientCreation1();
+}
+
+void continueAfterClientCreation1() {
+  setUserAgentString(userAgent);
+
+  if (sendOptionsRequest) {
+    // Begin by sending an "OPTIONS" command:
+    getOptions(continueAfterOPTIONS);
+  } else {
+    continueAfterOPTIONS(NULL, 0, NULL);
+  }
+}
+
+void continueAfterOPTIONS(RTSPClient*, int resultCode, char* resultString) {
+  if (sendOptionsRequestOnly) {
+    if (resultCode != 0) {
+      *env << clientProtocolName << " \"OPTIONS\" request failed: " << resultString << "\n";
+    } else {
+      *env << clientProtocolName << " \"OPTIONS\" request returned: " << resultString << "\n";
+    }
+    shutdown();
+  }
+  delete[] resultString;
+
+  // Next, get a SDP description for the stream:
+  getSDPDescription(continueAfterDESCRIBE);
+}
+
+void continueAfterDESCRIBE(RTSPClient*, int resultCode, char* resultString) {
+  if (resultCode != 0) {
+    *env << "Failed to get a SDP description for the URL \"" << streamURL << "\": " << resultString << "\n";
+    delete[] resultString;
+    shutdown();
+  }
+
+  char* sdpDescription = resultString;
+  *env << "Opened URL \"" << streamURL << "\", returning a SDP description:\n" << sdpDescription << "\n";
+
+  // Create a media session object from this SDP description:
+  session = MediaSession::createNew(*env, sdpDescription);
+  delete[] sdpDescription;
+  if (session == NULL) {
+    *env << "Failed to create a MediaSession object from the SDP description: " << env->getResultMsg() << "\n";
+    shutdown();
+  } else if (!session->hasSubsessions()) {
+    *env << "This session has no media subsessions (i.e., no \"m=\" lines)\n";
+    shutdown();
+  }
+
+  // Then, setup the "RTPSource"s for the session:
+  MediaSubsessionIterator iter(*session);
+  MediaSubsession *subsession;
+  Boolean madeProgress = False;
+  char const* singleMediumToTest = singleMedium;
+  while ((subsession = iter.next()) != NULL) {
+    // If we've asked to receive only a single medium, then check this now:
+    if (singleMediumToTest != NULL) {
+      if (strcmp(subsession->mediumName(), singleMediumToTest) != 0) {
+		  *env << "Ignoring \"" << subsession->mediumName()
+			  << "/" << subsession->codecName()
+			  << "\" subsession, because we've asked to receive a single " << singleMedium
+			  << " session only\n";
+	continue;
+      } else {
+	// Receive this subsession only
+	singleMediumToTest = "xxxxx";
+	    // this hack ensures that we get only 1 subsession of this type
+      }
+    }
+
+    if (desiredPortNum != 0) {
+      subsession->setClientPortNum(desiredPortNum);
+      desiredPortNum += 2;
+    }
+
+    if (createReceivers) {
+      if (!subsession->initiate(simpleRTPoffsetArg)) {
+	*env << "Unable to create receiver for \"" << subsession->mediumName()
+	     << "/" << subsession->codecName()
+	     << "\" subsession: " << env->getResultMsg() << "\n";
+      } else {
+	*env << "Created receiver for \"" << subsession->mediumName()
+	     << "/" << subsession->codecName() << "\" subsession (";
+	if (subsession->rtcpIsMuxed()) {
+	  *env << "client port " << subsession->clientPortNum();
+	} else {
+	  *env << "client ports " << subsession->clientPortNum()
+	       << "-" << subsession->clientPortNum()+1;
+	}
+	*env << ")\n";
+	madeProgress = True;
+	
+	if (subsession->rtpSource() != NULL) {
+	  // Because we're saving the incoming data, rather than playing
+	  // it in real time, allow an especially large time threshold
+	  // (1 second) for reordering misordered incoming packets:
+	  unsigned const thresh = 1000000; // 1 second
+	  subsession->rtpSource()->setPacketReorderingThresholdTime(thresh);
+	  
+	  // Set the RTP source's OS socket buffer size as appropriate - either if we were explicitly asked (using -B),
+	  // or if the desired FileSink buffer size happens to be larger than the current OS socket buffer size.
+	  // (The latter case is a heuristic, on the assumption that if the user asked for a large FileSink buffer size,
+	  // then the input data rate may be large enough to justify increasing the OS socket buffer size also.)
+	  int socketNum = subsession->rtpSource()->RTPgs()->socketNum();
+	  unsigned curBufferSize = getReceiveBufferSize(*env, socketNum);
+	  if (socketInputBufferSize > 0 || fileSinkBufferSize > curBufferSize) {
+	    unsigned newBufferSize = socketInputBufferSize > 0 ? socketInputBufferSize : fileSinkBufferSize;
+	    newBufferSize = setReceiveBufferTo(*env, socketNum, newBufferSize);
+	    if (socketInputBufferSize > 0) { // The user explicitly asked for the new socket buffer size; announce it:
+	      *env << "Changed socket receive buffer size for the \""
+		   << subsession->mediumName()
+		   << "/" << subsession->codecName()
+		   << "\" subsession from "
+		   << curBufferSize << " to "
+		   << newBufferSize << " bytes\n";
+	    }
+	  }
+	}
+      }
+    } else {
+      if (subsession->clientPortNum() == 0) {
+	*env << "No client port was specified for the \""
+	     << subsession->mediumName()
+	     << "/" << subsession->codecName()
+	     << "\" subsession.  (Try adding the \"-p <portNum>\" option.)\n";
+      } else {
+		madeProgress = True;
+      }
+    }
+  }
+  if (!madeProgress) shutdown();
+
+  // Perform additional 'setup' on each subsession, before playing them:
+  setupStreams();
+}
+
+MediaSubsession *subsession;
+Boolean madeProgress = False;
+void continueAfterSETUP(RTSPClient* client, int resultCode, char* resultString) {
+  if (resultCode == 0) {
+      *env << "Setup \"" << subsession->mediumName()
+	   << "/" << subsession->codecName()
+	   << "\" subsession (";
+      if (subsession->rtcpIsMuxed()) {
+	*env << "client port " << subsession->clientPortNum();
+      } else {
+	*env << "client ports " << subsession->clientPortNum()
+	     << "-" << subsession->clientPortNum()+1;
+      }
+      *env << ")\n";
+      madeProgress = True;
+  } else {
+    *env << "Failed to setup \"" << subsession->mediumName()
+	 << "/" << subsession->codecName()
+	 << "\" subsession: " << resultString << "\n";
+  }
+  delete[] resultString;
+
+  if (client != NULL) sessionTimeoutParameter = client->sessionTimeoutParameter();
+
+  // Set up the next subsession, if any:
+  setupStreams();
+}
+
+void createOutputFiles(char const* periodicFilenameSuffix) {
+  char outFileName[1000];
+
+  if (outputQuickTimeFile || outputAVIFile) {
+    if (periodicFilenameSuffix[0] == '\0') {
+      // Normally (unless the '-P <interval-in-seconds>' option was given) we output to 'stdout':
+      sprintf(outFileName, "stdout");
+    } else {
+      // Otherwise output to a type-specific file name, containing "periodicFilenameSuffix":
+      char const* prefix = fileNamePrefix[0] == '\0' ? "output" : fileNamePrefix;
+      snprintf(outFileName, sizeof outFileName, "%s%s.%s", prefix, periodicFilenameSuffix,
+	       outputAVIFile ? "avi" : generateMP4Format ? "mp4" : "mov");
+    }
+
+    if (outputQuickTimeFile) {
+      qtOut = QuickTimeFileSink::createNew(*env, *session, outFileName,
+					   fileSinkBufferSize,
+					   movieWidth, movieHeight,
+					   movieFPS,
+					   packetLossCompensate,
+					   syncStreams,
+					   generateHintTracks,
+					   generateMP4Format);
+      if (qtOut == NULL) {
+	*env << "Failed to create a \"QuickTimeFileSink\" for outputting to \""
+	     << outFileName << "\": " << env->getResultMsg() << "\n";
+	shutdown();
+      } else {
+	*env << "Outputting to the file: \"" << outFileName << "\"\n";
+      }
+      
+      qtOut->startPlaying(sessionAfterPlaying, NULL);
+    } else { // outputAVIFile
+      aviOut = AVIFileSink::createNew(*env, *session, outFileName,
+				      fileSinkBufferSize,
+				      movieWidth, movieHeight,
+				      movieFPS,
+				      packetLossCompensate);
+      if (aviOut == NULL) {
+	*env << "Failed to create an \"AVIFileSink\" for outputting to \""
+	     << outFileName << "\": " << env->getResultMsg() << "\n";
+	shutdown();
+      } else {
+	*env << "Outputting to the file: \"" << outFileName << "\"\n";
+      }
+      
+      aviOut->startPlaying(sessionAfterPlaying, NULL);
+    }
+  } else {
+    // Create and start "FileSink"s for each subsession:
+    madeProgress = False;
+    MediaSubsessionIterator iter(*session);
+    while ((subsession = iter.next()) != NULL) {
+      if (subsession->readSource() == NULL) continue; // was not initiated
+      
+      // Create an output file for each desired stream:
+      if (singleMedium == NULL || periodicFilenameSuffix[0] != '\0') {
+	// Output file name is
+	//     "<filename-prefix><medium_name>-<codec_name>-<counter><periodicFilenameSuffix>"
+	static unsigned streamCounter = 0;
+	snprintf(outFileName, sizeof outFileName, "%s%s-%s-%d%s",
+		 fileNamePrefix, subsession->mediumName(),
+		 subsession->codecName(), ++streamCounter, periodicFilenameSuffix);
+      } else {
+	// When outputting a single medium only, we output to 'stdout
+	// (unless the '-P <interval-in-seconds>' option was given):
+	sprintf(outFileName, "stdout");
+      }
+
+      FileSink* fileSink = NULL;
+      Boolean createOggFileSink = False; // by default
+      if (strcmp(subsession->mediumName(), "video") == 0) {
+	if (strcmp(subsession->codecName(), "H264") == 0) {
+	  // For H.264 video stream, we use a special sink that adds 'start codes',
+	  // and (at the start) the SPS and PPS NAL units:
+	  fileSink = H264VideoFileSink::createNew(*env, outFileName,
+						  subsession->fmtp_spropparametersets(),
+						  fileSinkBufferSize, oneFilePerFrame);
+	} else if (strcmp(subsession->codecName(), "H265") == 0) {
+	  // For H.265 video stream, we use a special sink that adds 'start codes',
+	  // and (at the start) the VPS, SPS, and PPS NAL units:
+	  fileSink = H265VideoFileSink::createNew(*env, outFileName,
+						  subsession->fmtp_spropvps(),
+						  subsession->fmtp_spropsps(),
+						  subsession->fmtp_sproppps(),
+						  fileSinkBufferSize, oneFilePerFrame);
+	} else if (strcmp(subsession->codecName(), "THEORA") == 0) {
+	  createOggFileSink = True;
+	}
+      } else if (strcmp(subsession->mediumName(), "audio") == 0) {
+	if (strcmp(subsession->codecName(), "AMR") == 0 ||
+	    strcmp(subsession->codecName(), "AMR-WB") == 0) {
+	  // For AMR audio streams, we use a special sink that inserts AMR frame hdrs:
+	  fileSink = AMRAudioFileSink::createNew(*env, outFileName,
+						 fileSinkBufferSize, oneFilePerFrame);
+	} else if (strcmp(subsession->codecName(), "VORBIS") == 0 ||
+		   strcmp(subsession->codecName(), "OPUS") == 0) {
+	  createOggFileSink = True;
+	}
+      }
+      if (createOggFileSink) {
+	fileSink = OggFileSink
+	  ::createNew(*env, outFileName,
+		      subsession->rtpTimestampFrequency(), subsession->fmtp_config());
+      } else if (fileSink == NULL) {
+	// Normal case:
+	fileSink = FileSink::createNew(*env, outFileName,
+				       fileSinkBufferSize, oneFilePerFrame);
+      }
+      subsession->sink = fileSink;
+
+      if (subsession->sink == NULL) {
+	*env << "Failed to create FileSink for \"" << outFileName
+	     << "\": " << env->getResultMsg() << "\n";
+      } else {
+	if (singleMedium == NULL) {
+	  *env << "Created output file: \"" << outFileName << "\"\n";
+	} else {
+	  *env << "Outputting data from the \"" << subsession->mediumName()
+	       << "/" << subsession->codecName()
+	       << "\" subsession to \"" << outFileName << "\"\n";
+	}
+	
+	if (strcmp(subsession->mediumName(), "video") == 0 &&
+	    strcmp(subsession->codecName(), "MP4V-ES") == 0 &&
+	    subsession->fmtp_config() != NULL) {
+	  // For MPEG-4 video RTP streams, the 'config' information
+	  // from the SDP description contains useful VOL etc. headers.
+	  // Insert this data at the front of the output file:
+	  unsigned configLen;
+	  unsigned char* configData
+	    = parseGeneralConfigStr(subsession->fmtp_config(), configLen);
+	  struct timeval timeNow;
+	  gettimeofday(&timeNow, NULL);
+	  fileSink->addData(configData, configLen, timeNow);
+	  delete[] configData;
+	}
+	
+	subsession->sink->startPlaying(*(subsession->readSource()),
+				       subsessionAfterPlaying,
+				       subsession);
+	
+	// Also set a handler to be called if a RTCP "BYE" arrives
+	// for this subsession:
+	if (subsession->rtcpInstance() != NULL) {
+	  subsession->rtcpInstance()->setByeWithReasonHandler(subsessionByeHandler, subsession);
+	}
+	
+	madeProgress = True;
+      }
+    }
+    if (!madeProgress) shutdown();
+  }
+}
+
+void createPeriodicOutputFiles() {
+  // Create a filename suffix that notes the time interval that's being recorded:
+  char periodicFileNameSuffix[100];
+  snprintf(periodicFileNameSuffix, sizeof periodicFileNameSuffix, "-%05d-%05d",
+	   fileOutputSecondsSoFar, fileOutputSecondsSoFar + fileOutputInterval);
+  createOutputFiles(periodicFileNameSuffix);
+
+  // Schedule an event for writing the next output file:
+  periodicFileOutputTask
+    = env->taskScheduler().scheduleDelayedTask(fileOutputInterval*1000000,
+					       (TaskFunc*)periodicFileOutputTimerHandler,
+					       (void*)NULL);
+}
+
+void setupStreams() {
+  static MediaSubsessionIterator* setupIter = NULL;
+  if (setupIter == NULL) setupIter = new MediaSubsessionIterator(*session);
+  while ((subsession = setupIter->next()) != NULL) {
+    // We have another subsession left to set up:
+    if (subsession->clientPortNum() == 0) continue; // port # was not set
+
+    setupSubsession(subsession, streamUsingTCP, forceMulticastOnUnspecified, continueAfterSETUP);
+    return;
+  }
+
+  // We're done setting up subsessions.
+  delete setupIter;
+  if (!madeProgress) shutdown();
+
+  // Create output files:
+  if (createReceivers) {
+    if (fileOutputInterval > 0) {
+      createPeriodicOutputFiles();
+    } else {
+      createOutputFiles("");
+    }
+  }
+
+  // Finally, start playing each subsession, to start the data flow:
+  if (duration == 0) {
+    if (scale > 0) duration = session->playEndTime() - initialSeekTime; // use SDP end time
+    else if (scale < 0) duration = initialSeekTime;
+  }
+  if (duration < 0) duration = 0.0;
+
+  endTime = initialSeekTime;
+  if (scale > 0) {
+    if (duration <= 0) endTime = -1.0f;
+    else endTime = initialSeekTime + duration;
+  } else {
+    endTime = initialSeekTime - duration;
+    if (endTime < 0) endTime = 0.0f;
+  }
+
+  char const* absStartTime = initialAbsoluteSeekTime != NULL ? initialAbsoluteSeekTime : session->absStartTime();
+  char const* absEndTime = initialAbsoluteSeekEndTime != NULL ? initialAbsoluteSeekEndTime : session->absEndTime();
+  if (absStartTime != NULL) {
+    // Either we or the server have specified that seeking should be done by 'absolute' time:
+    startPlayingSession(session, absStartTime, absEndTime, scale, continueAfterPLAY);
+  } else {
+    // Normal case: Seek by relative time (NPT):
+    startPlayingSession(session, initialSeekTime, endTime, scale, continueAfterPLAY);
+  }
+}
+
+void continueAfterPLAY(RTSPClient*, int resultCode, char* resultString) {
+  if (resultCode != 0) {
+    *env << "Failed to start playing session: " << resultString << "\n";
+    delete[] resultString;
+    shutdown();
+    return;
+  } else {
+    *env << "Started playing session\n";
+  }
+  delete[] resultString;
+
+  if (qosMeasurementIntervalMS > 0) {
+    // Begin periodic QOS measurements:
+    beginQOSMeasurement();
+  }
+
+  // Figure out how long to delay (if at all) before shutting down, or
+  // repeating the playing
+  Boolean timerIsBeingUsed = False;
+  double secondsToDelay = duration;
+  if (duration > 0) {
+    // First, adjust "duration" based on any change to the play range (that was specified in the "PLAY" response):
+    double rangeAdjustment = (session->playEndTime() - session->playStartTime()) - (endTime - initialSeekTime);
+    if (duration + rangeAdjustment > 0.0) duration += rangeAdjustment;
+
+    timerIsBeingUsed = True;
+    double absScale = scale > 0 ? scale : -scale; // ASSERT: scale != 0
+    secondsToDelay = duration/absScale + durationSlop;
+
+    int64_t uSecsToDelay = (int64_t)(secondsToDelay*1000000.0);
+    sessionTimerTask = env->taskScheduler().scheduleDelayedTask(uSecsToDelay, (TaskFunc*)sessionTimerHandler, (void*)NULL);
+  }
+
+  char const* actionString
+    = createReceivers? "Receiving streamed data":"Data is being streamed";
+  if (timerIsBeingUsed) {
+    *env << actionString
+		<< " (for up to " << secondsToDelay
+		<< " seconds)...\n";
+  } else {
+#ifdef USE_SIGNALS
+    pid_t ourPid = getpid();
+    *env << actionString
+		<< " (signal with \"kill -HUP " << (int)ourPid
+		<< "\" or \"kill -USR1 " << (int)ourPid
+		<< "\" to terminate)...\n";
+#else
+    *env << actionString << "...\n";
+#endif
+  }
+
+  sessionTimeoutBrokenServerTask = NULL;
+
+  // Watch for incoming packets (if desired):
+  checkForPacketArrival(NULL);
+  checkInterPacketGaps(NULL);
+  checkSessionTimeoutBrokenServer(NULL);
+}
+
+void closeMediaSinks() {
+  Medium::close(qtOut); qtOut = NULL;
+  Medium::close(aviOut); aviOut = NULL;
+
+  if (session == NULL) return;
+  MediaSubsessionIterator iter(*session);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    Medium::close(subsession->sink);
+    subsession->sink = NULL;
+  }
+}
+
+void subsessionAfterPlaying(void* clientData) {
+  // Begin by closing this media subsession's stream:
+  MediaSubsession* subsession = (MediaSubsession*)clientData;
+  Medium::close(subsession->sink);
+  subsession->sink = NULL;
+
+  // Next, check whether *all* subsessions' streams have now been closed:
+  MediaSession& session = subsession->parentSession();
+  MediaSubsessionIterator iter(session);
+  while ((subsession = iter.next()) != NULL) {
+    if (subsession->sink != NULL) return; // this subsession is still active
+  }
+
+  // All subsessions' streams have now been closed
+  sessionAfterPlaying();
+}
+
+void subsessionByeHandler(void* clientData, char const* reason) {
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+  unsigned secsDiff = timeNow.tv_sec - startTime.tv_sec;
+
+  MediaSubsession* subsession = (MediaSubsession*)clientData;
+  *env << "Received RTCP \"BYE\"";
+  if (reason != NULL) {
+    *env << " (reason:\"" << reason << "\")";
+    delete[] (char*)reason;
+  }
+  *env << " on \"" << subsession->mediumName()
+	<< "/" << subsession->codecName()
+	<< "\" subsession (after " << secsDiff
+	<< " seconds)\n";
+
+  // Act now as if the subsession had closed:
+  subsessionAfterPlaying(subsession);
+}
+
+void sessionAfterPlaying(void* /*clientData*/) {
+  if (!playContinuously) {
+    shutdown(0);
+  } else {
+    // We've been asked to play the stream(s) over again.
+    // First, reset state from the current session:
+    if (env != NULL) {
+      // Keep this running:      env->taskScheduler().unscheduleDelayedTask(periodicFileOutputTask);
+      env->taskScheduler().unscheduleDelayedTask(sessionTimerTask);
+      env->taskScheduler().unscheduleDelayedTask(sessionTimeoutBrokenServerTask);
+      env->taskScheduler().unscheduleDelayedTask(arrivalCheckTimerTask);
+      env->taskScheduler().unscheduleDelayedTask(interPacketGapCheckTimerTask);
+      env->taskScheduler().unscheduleDelayedTask(qosMeasurementTimerTask);
+    }
+    totNumPacketsReceived = ~0;
+
+    startPlayingSession(session, initialSeekTime, endTime, scale, continueAfterPLAY);
+  }
+}
+
+void sessionTimerHandler(void* /*clientData*/) {
+  sessionTimerTask = NULL;
+
+  sessionAfterPlaying();
+}
+
+void periodicFileOutputTimerHandler(void* /*clientData*/) {
+  periodicFileOutputTask = NULL;
+  fileOutputSecondsSoFar += fileOutputInterval;
+
+  // First, close the existing output files:
+  closeMediaSinks();
+
+  // Then, create new output files:
+  createPeriodicOutputFiles();
+}
+
+class qosMeasurementRecord {
+public:
+  qosMeasurementRecord(struct timeval const& startTime, RTPSource* src)
+    : fSource(src), fNext(NULL),
+      kbits_per_second_min(1e20), kbits_per_second_max(0),
+      kBytesTotal(0.0),
+      packet_loss_fraction_min(1.0), packet_loss_fraction_max(0.0),
+      totNumPacketsReceived(0), totNumPacketsExpected(0) {
+    measurementEndTime = measurementStartTime = startTime;
+
+    RTPReceptionStatsDB::Iterator statsIter(src->receptionStatsDB());
+    // Assume that there's only one SSRC source (usually the case):
+    RTPReceptionStats* stats = statsIter.next(True);
+    if (stats != NULL) {
+      kBytesTotal = stats->totNumKBytesReceived();
+      totNumPacketsReceived = stats->totNumPacketsReceived();
+      totNumPacketsExpected = stats->totNumPacketsExpected();
+    }
+  }
+  virtual ~qosMeasurementRecord() { delete fNext; }
+
+  void periodicQOSMeasurement(struct timeval const& timeNow);
+
+public:
+  RTPSource* fSource;
+  qosMeasurementRecord* fNext;
+
+public:
+  struct timeval measurementStartTime, measurementEndTime;
+  double kbits_per_second_min, kbits_per_second_max;
+  double kBytesTotal;
+  double packet_loss_fraction_min, packet_loss_fraction_max;
+  unsigned totNumPacketsReceived, totNumPacketsExpected;
+};
+
+static qosMeasurementRecord* qosRecordHead = NULL;
+
+static void periodicQOSMeasurement(void* clientData); // forward
+
+static unsigned nextQOSMeasurementUSecs;
+
+static void scheduleNextQOSMeasurement() {
+  nextQOSMeasurementUSecs += qosMeasurementIntervalMS*1000;
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+  unsigned timeNowUSecs = timeNow.tv_sec*1000000 + timeNow.tv_usec;
+  int usecsToDelay = nextQOSMeasurementUSecs - timeNowUSecs;
+
+  qosMeasurementTimerTask = env->taskScheduler().scheduleDelayedTask(
+     usecsToDelay, (TaskFunc*)periodicQOSMeasurement, (void*)NULL);
+}
+
+static void periodicQOSMeasurement(void* /*clientData*/) {
+  struct timeval timeNow;
+  gettimeofday(&timeNow, NULL);
+
+  for (qosMeasurementRecord* qosRecord = qosRecordHead;
+       qosRecord != NULL; qosRecord = qosRecord->fNext) {
+    qosRecord->periodicQOSMeasurement(timeNow);
+  }
+
+  // Do this again later:
+  scheduleNextQOSMeasurement();
+}
+
+void qosMeasurementRecord
+::periodicQOSMeasurement(struct timeval const& timeNow) {
+  unsigned secsDiff = timeNow.tv_sec - measurementEndTime.tv_sec;
+  int usecsDiff = timeNow.tv_usec - measurementEndTime.tv_usec;
+  double timeDiff = secsDiff + usecsDiff/1000000.0;
+  measurementEndTime = timeNow;
+
+  RTPReceptionStatsDB::Iterator statsIter(fSource->receptionStatsDB());
+  // Assume that there's only one SSRC source (usually the case):
+  RTPReceptionStats* stats = statsIter.next(True);
+  if (stats != NULL) {
+    double kBytesTotalNow = stats->totNumKBytesReceived();
+    double kBytesDeltaNow = kBytesTotalNow - kBytesTotal;
+    kBytesTotal = kBytesTotalNow;
+
+    double kbpsNow = timeDiff == 0.0 ? 0.0 : 8*kBytesDeltaNow/timeDiff;
+    if (kbpsNow < 0.0) kbpsNow = 0.0; // in case of roundoff error
+    if (kbpsNow < kbits_per_second_min) kbits_per_second_min = kbpsNow;
+    if (kbpsNow > kbits_per_second_max) kbits_per_second_max = kbpsNow;
+
+    unsigned totReceivedNow = stats->totNumPacketsReceived();
+    unsigned totExpectedNow = stats->totNumPacketsExpected();
+    unsigned deltaReceivedNow = totReceivedNow - totNumPacketsReceived;
+    unsigned deltaExpectedNow = totExpectedNow - totNumPacketsExpected;
+    totNumPacketsReceived = totReceivedNow;
+    totNumPacketsExpected = totExpectedNow;
+
+    double lossFractionNow = deltaExpectedNow == 0 ? 0.0
+      : 1.0 - deltaReceivedNow/(double)deltaExpectedNow;
+    //if (lossFractionNow < 0.0) lossFractionNow = 0.0; //reordering can cause
+    if (lossFractionNow < packet_loss_fraction_min) {
+      packet_loss_fraction_min = lossFractionNow;
+    }
+    if (lossFractionNow > packet_loss_fraction_max) {
+      packet_loss_fraction_max = lossFractionNow;
+    }
+  }
+}
+
+void beginQOSMeasurement() {
+  // Set up a measurement record for each active subsession:
+  struct timeval startTime;
+  gettimeofday(&startTime, NULL);
+  nextQOSMeasurementUSecs = startTime.tv_sec*1000000 + startTime.tv_usec;
+  qosMeasurementRecord* qosRecordTail = NULL;
+  MediaSubsessionIterator iter(*session);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    RTPSource* src = subsession->rtpSource();
+    if (src == NULL) continue;
+
+    qosMeasurementRecord* qosRecord
+      = new qosMeasurementRecord(startTime, src);
+    if (qosRecordHead == NULL) qosRecordHead = qosRecord;
+    if (qosRecordTail != NULL) qosRecordTail->fNext = qosRecord;
+    qosRecordTail  = qosRecord;
+  }
+
+  // Then schedule the first of the periodic measurements:
+  scheduleNextQOSMeasurement();
+}
+
+void printQOSData(int exitCode) {
+  *env << "begin_QOS_statistics\n";
+  
+  // Print out stats for each active subsession:
+  qosMeasurementRecord* curQOSRecord = qosRecordHead;
+  if (session != NULL) {
+    MediaSubsessionIterator iter(*session);
+    MediaSubsession* subsession;
+    while ((subsession = iter.next()) != NULL) {
+      RTPSource* src = subsession->rtpSource();
+      if (src == NULL) continue;
+      
+      *env << "subsession\t" << subsession->mediumName()
+	   << "/" << subsession->codecName() << "\n";
+      
+      unsigned numPacketsReceived = 0, numPacketsExpected = 0;
+      
+      if (curQOSRecord != NULL) {
+	numPacketsReceived = curQOSRecord->totNumPacketsReceived;
+	numPacketsExpected = curQOSRecord->totNumPacketsExpected;
+      }
+      *env << "num_packets_received\t" << numPacketsReceived << "\n";
+      *env << "num_packets_lost\t" << int(numPacketsExpected - numPacketsReceived) << "\n";
+      
+      if (curQOSRecord != NULL) {
+	unsigned secsDiff = curQOSRecord->measurementEndTime.tv_sec
+	  - curQOSRecord->measurementStartTime.tv_sec;
+	int usecsDiff = curQOSRecord->measurementEndTime.tv_usec
+	  - curQOSRecord->measurementStartTime.tv_usec;
+	double measurementTime = secsDiff + usecsDiff/1000000.0;
+	*env << "elapsed_measurement_time\t" << measurementTime << "\n";
+	
+	*env << "kBytes_received_total\t" << curQOSRecord->kBytesTotal << "\n";
+	
+	*env << "measurement_sampling_interval_ms\t" << qosMeasurementIntervalMS << "\n";
+	
+	if (curQOSRecord->kbits_per_second_max == 0) {
+	  // special case: we didn't receive any data:
+	  *env <<
+	    "kbits_per_second_min\tunavailable\n"
+	    "kbits_per_second_ave\tunavailable\n"
+	    "kbits_per_second_max\tunavailable\n";
+	} else {
+	  *env << "kbits_per_second_min\t" << curQOSRecord->kbits_per_second_min << "\n";
+	  *env << "kbits_per_second_ave\t"
+	       << (measurementTime == 0.0 ? 0.0 : 8*curQOSRecord->kBytesTotal/measurementTime) << "\n";
+	  *env << "kbits_per_second_max\t" << curQOSRecord->kbits_per_second_max << "\n";
+	}
+	
+	*env << "packet_loss_percentage_min\t" << 100*curQOSRecord->packet_loss_fraction_min << "\n";
+	double packetLossFraction = numPacketsExpected == 0 ? 1.0
+	  : 1.0 - numPacketsReceived/(double)numPacketsExpected;
+	if (packetLossFraction < 0.0) packetLossFraction = 0.0;
+	*env << "packet_loss_percentage_ave\t" << 100*packetLossFraction << "\n";
+	*env << "packet_loss_percentage_max\t"
+	     << (packetLossFraction == 1.0 ? 100.0 : 100*curQOSRecord->packet_loss_fraction_max) << "\n";
+	
+	RTPReceptionStatsDB::Iterator statsIter(src->receptionStatsDB());
+	// Assume that there's only one SSRC source (usually the case):
+	RTPReceptionStats* stats = statsIter.next(True);
+	if (stats != NULL) {
+	  *env << "inter_packet_gap_ms_min\t" << stats->minInterPacketGapUS()/1000.0 << "\n";
+	  struct timeval totalGaps = stats->totalInterPacketGaps();
+	  double totalGapsMS = totalGaps.tv_sec*1000.0 + totalGaps.tv_usec/1000.0;
+	  unsigned totNumPacketsReceived = stats->totNumPacketsReceived();
+	  *env << "inter_packet_gap_ms_ave\t"
+	       << (totNumPacketsReceived == 0 ? 0.0 : totalGapsMS/totNumPacketsReceived) << "\n";
+	  *env << "inter_packet_gap_ms_max\t" << stats->maxInterPacketGapUS()/1000.0 << "\n";
+	}
+	
+	curQOSRecord = curQOSRecord->fNext;
+      }
+    }
+  }
+
+  *env << "end_QOS_statistics\n";
+  delete qosRecordHead;
+}
+
+Boolean areAlreadyShuttingDown = False;
+int shutdownExitCode;
+void shutdown(int exitCode) {
+  if (areAlreadyShuttingDown) return; // in case we're called after receiving a RTCP "BYE" while in the middle of a "TEARDOWN".
+  areAlreadyShuttingDown = True;
+
+  shutdownExitCode = exitCode;
+  if (env != NULL) {
+    env->taskScheduler().unscheduleDelayedTask(periodicFileOutputTask);
+    env->taskScheduler().unscheduleDelayedTask(sessionTimerTask);
+    env->taskScheduler().unscheduleDelayedTask(sessionTimeoutBrokenServerTask);
+    env->taskScheduler().unscheduleDelayedTask(arrivalCheckTimerTask);
+    env->taskScheduler().unscheduleDelayedTask(interPacketGapCheckTimerTask);
+    env->taskScheduler().unscheduleDelayedTask(qosMeasurementTimerTask);
+  }
+
+  if (qosMeasurementIntervalMS > 0) {
+    printQOSData(exitCode);
+  }
+
+  // Teardown, then shutdown, any outstanding RTP/RTCP subsessions
+  Boolean shutdownImmediately = True; // by default
+  if (session != NULL) {
+    RTSPClient::responseHandler* responseHandlerForTEARDOWN = NULL; // unless:
+    if (waitForResponseToTEARDOWN) {
+      shutdownImmediately = False;
+      responseHandlerForTEARDOWN = continueAfterTEARDOWN;
+    }
+    tearDownSession(session, responseHandlerForTEARDOWN);
+  }
+
+  if (shutdownImmediately) continueAfterTEARDOWN(NULL, 0, NULL);
+}
+
+void continueAfterTEARDOWN(RTSPClient*, int /*resultCode*/, char* resultString) {
+  delete[] resultString;
+
+  // Now that we've stopped any more incoming data from arriving, close our output files:
+  closeMediaSinks();
+  Medium::close(session);
+
+  // Finally, shut down our client:
+  delete ourAuthenticator;
+  delete authDBForREGISTER;
+  Medium::close(ourClient);
+
+  // Adios...
+  exit(shutdownExitCode);
+}
+
+void signalHandlerShutdown(int /*sig*/) {
+  *env << "Got shutdown signal\n";
+  waitForResponseToTEARDOWN = False; // to ensure that we end, even if the server does not respond to our TEARDOWN
+  shutdown(0);
+}
+
+void checkForPacketArrival(void* /*clientData*/) {
+  arrivalCheckTimerTask = NULL;
+  if (!notifyOnPacketArrival) return; // we're not checking
+
+  // Check each subsession, to see whether it has received data packets:
+  unsigned numSubsessionsChecked = 0;
+  unsigned numSubsessionsWithReceivedData = 0;
+  unsigned numSubsessionsThatHaveBeenSynced = 0;
+
+  MediaSubsessionIterator iter(*session);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    RTPSource* src = subsession->rtpSource();
+    if (src == NULL) continue;
+    ++numSubsessionsChecked;
+
+    if (src->receptionStatsDB().numActiveSourcesSinceLastReset() > 0) {
+      // At least one data packet has arrived
+      ++numSubsessionsWithReceivedData;
+    }
+    if (src->hasBeenSynchronizedUsingRTCP()) {
+      ++numSubsessionsThatHaveBeenSynced;
+    }
+  }
+
+  unsigned numSubsessionsToCheck = numSubsessionsChecked;
+  // Special case for "QuickTimeFileSink"s and "AVIFileSink"s:
+  // They might not use all of the input sources:
+  if (qtOut != NULL) {
+    numSubsessionsToCheck = qtOut->numActiveSubsessions();
+  } else if (aviOut != NULL) {
+    numSubsessionsToCheck = aviOut->numActiveSubsessions();
+  }
+
+  Boolean notifyTheUser;
+  if (!syncStreams) {
+    notifyTheUser = numSubsessionsWithReceivedData > 0; // easy case
+  } else {
+    notifyTheUser = numSubsessionsWithReceivedData >= numSubsessionsToCheck
+      && numSubsessionsThatHaveBeenSynced == numSubsessionsChecked;
+    // Note: A subsession with no active sources is considered to be synced
+  }
+  if (notifyTheUser) {
+    struct timeval timeNow;
+    gettimeofday(&timeNow, NULL);
+	char timestampStr[100];
+	sprintf(timestampStr, "%ld%03ld", timeNow.tv_sec, (long)(timeNow.tv_usec/1000));
+    *env << (syncStreams ? "Synchronized d" : "D")
+		<< "ata packets have begun arriving [" << timestampStr << "]\007\n";
+    return;
+  }
+
+  // No luck, so reschedule this check again, after a delay:
+  int uSecsToDelay = 100000; // 100 ms
+  arrivalCheckTimerTask
+    = env->taskScheduler().scheduleDelayedTask(uSecsToDelay,
+			       (TaskFunc*)checkForPacketArrival, NULL);
+}
+
+void checkInterPacketGaps(void* /*clientData*/) {
+  interPacketGapCheckTimerTask = NULL;
+  if (interPacketGapMaxTime == 0) return; // we're not checking
+
+  // Check each subsession, counting up how many packets have been received:
+  unsigned newTotNumPacketsReceived = 0;
+
+  MediaSubsessionIterator iter(*session);
+  MediaSubsession* subsession;
+  while ((subsession = iter.next()) != NULL) {
+    RTPSource* src = subsession->rtpSource();
+    if (src == NULL) continue;
+    newTotNumPacketsReceived += src->receptionStatsDB().totNumPacketsReceived();
+  }
+
+  if (newTotNumPacketsReceived == totNumPacketsReceived) {
+    // No additional packets have been received since the last time we
+    // checked, so end this stream:
+    *env << "Closing session, because we stopped receiving packets.\n";
+    interPacketGapCheckTimerTask = NULL;
+    sessionAfterPlaying();
+  } else {
+    totNumPacketsReceived = newTotNumPacketsReceived;
+    // Check again, after the specified delay:
+    interPacketGapCheckTimerTask
+      = env->taskScheduler().scheduleDelayedTask(interPacketGapMaxTime*1000000,
+				 (TaskFunc*)checkInterPacketGaps, NULL);
+  }
+}
+
+void checkSessionTimeoutBrokenServer(void* /*clientData*/) {
+  if (!sendKeepAlivesToBrokenServers) return; // we're not checking
+
+  // Send an "OPTIONS" request, starting with the second call
+  if (sessionTimeoutBrokenServerTask != NULL) {
+    getOptions(NULL);
+  }
+  
+  unsigned sessionTimeout = sessionTimeoutParameter == 0 ? 60/*default*/ : sessionTimeoutParameter;
+  unsigned secondsUntilNextKeepAlive = sessionTimeout <= 5 ? 1 : sessionTimeout - 5;
+      // Reduce the interval a little, to be on the safe side
+
+  sessionTimeoutBrokenServerTask 
+    = env->taskScheduler().scheduleDelayedTask(secondsUntilNextKeepAlive*1000000,
+			 (TaskFunc*)checkSessionTimeoutBrokenServer, NULL);
+					       
+}
diff --git a/testProgs/playCommon.hh b/testProgs/playCommon.hh
new file mode 100644
index 0000000..b9be910
--- /dev/null
+++ b/testProgs/playCommon.hh
@@ -0,0 +1,47 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A common framework, used for the "openRTSP" and "playSIP" applications
+// Interfaces
+
+#include "liveMedia.hh"
+
+extern Medium* createClient(UsageEnvironment& env, char const* URL, int verbosityLevel, char const* applicationName);
+extern void assignClient(Medium* client);
+extern RTSPClient* ourRTSPClient;
+extern SIPClient* ourSIPClient;
+
+extern void getOptions(RTSPClient::responseHandler* afterFunc);
+
+extern void getSDPDescription(RTSPClient::responseHandler* afterFunc);
+
+extern void setupSubsession(MediaSubsession* subsession, Boolean streamUsingTCP, Boolean forceMulticastOnUnspecified, RTSPClient::responseHandler* afterFunc);
+
+extern void startPlayingSession(MediaSession* session, double start, double end, float scale, RTSPClient::responseHandler* afterFunc);
+
+extern void startPlayingSession(MediaSession* session, char const* absStartTime, char const* absEndTime, float scale, RTSPClient::responseHandler* afterFunc);
+  // For playing by 'absolute' time (using strings of the form "YYYYMMDDTHHMMSSZ" or "YYYYMMDDTHHMMSS.<frac>Z"
+
+extern void tearDownSession(MediaSession* session, RTSPClient::responseHandler* afterFunc);
+
+extern void setUserAgentString(char const* userAgentString);
+
+extern Authenticator* ourAuthenticator;
+extern Boolean allowProxyServers;
+extern Boolean controlConnectionUsesTCP;
+extern Boolean supportCodecSelection;
+extern char const* clientProtocolName;
+extern unsigned statusCode;
diff --git a/testProgs/playSIP.cpp b/testProgs/playSIP.cpp
new file mode 100644
index 0000000..45bc928
--- /dev/null
+++ b/testProgs/playSIP.cpp
@@ -0,0 +1,184 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A SIP client test program that opens a SIP URL argument,
+// and extracts the data from each incoming RTP stream.
+
+#include "playCommon.hh"
+#include "SIPClient.hh"
+
+static char* getLine(char* startOfLine) {
+  // returns the start of the next line, or NULL if none
+  for (char* ptr = startOfLine; *ptr != '\0'; ++ptr) {
+    if (*ptr == '\r' || *ptr == '\n') {
+      // We found the end of the line
+      *ptr++ = '\0';
+      if (*ptr == '\n') ++ptr;
+      return ptr;
+    }
+  }
+  
+  return NULL;
+}
+
+SIPClient* ourSIPClient = NULL;
+Medium* createClient(UsageEnvironment& env, char const* /*url*/, int verbosityLevel, char const* applicationName) {
+  // First, trim any directory prefixes from "applicationName":
+  char const* suffix = &applicationName[strlen(applicationName)];
+  while (suffix != applicationName) {
+    if (*suffix == '/' || *suffix == '\\') {
+      applicationName = ++suffix;
+      break;
+    }
+    --suffix;
+  }
+
+  extern unsigned char desiredAudioRTPPayloadFormat;
+  extern char* mimeSubtype;
+  return ourSIPClient = SIPClient::createNew(env, desiredAudioRTPPayloadFormat, mimeSubtype, verbosityLevel, applicationName);
+}
+
+// The followign function is implemented, but is not used for "playSIP":
+void assignClient(Medium* /*client*/) {
+}
+
+void getOptions(RTSPClient::responseHandler* afterFunc) { 
+  ourSIPClient->envir().setResultMsg("NOT SUPPORTED IN CLIENT");
+  afterFunc(NULL, -1, strDup(ourSIPClient->envir().getResultMsg()));
+}
+
+void getSDPDescription(RTSPClient::responseHandler* afterFunc) {
+  extern char* proxyServerName;
+  if (proxyServerName != NULL) {
+    // Tell the SIP client about the proxy:
+    NetAddressList addresses(proxyServerName);
+    if (addresses.numAddresses() == 0) {
+      ourSIPClient->envir() << "Failed to find network address for \"" << proxyServerName << "\"\n";
+    } else {
+      NetAddress address = *(addresses.firstAddress());
+      unsigned proxyServerAddress // later, allow for IPv6 #####
+	= *(unsigned*)(address.data());
+      extern unsigned short proxyServerPortNum;
+      if (proxyServerPortNum == 0) proxyServerPortNum = 5060; // default
+
+      ourSIPClient->setProxyServer(proxyServerAddress, proxyServerPortNum);
+    }
+  }
+
+  extern unsigned short desiredPortNum;
+  unsigned short clientStartPortNum = desiredPortNum;
+  if (clientStartPortNum == 0) clientStartPortNum = 8000; // default
+  ourSIPClient->setClientStartPortNum(clientStartPortNum);
+
+  extern char const* streamURL;
+  char const* username = ourAuthenticator == NULL ? NULL : ourAuthenticator->username();
+  char const* password = ourAuthenticator == NULL ? NULL : ourAuthenticator->password();
+  char* result;
+  if (username != NULL && password != NULL) {
+    result = ourSIPClient->inviteWithPassword(streamURL, username, password);
+  } else {
+    result = ourSIPClient->invite(streamURL);
+  }
+
+  int resultCode = result == NULL ? -1 : 0;
+  afterFunc(NULL, resultCode, strDup(result));
+}
+
+void setupSubsession(MediaSubsession* subsession, Boolean /*streamUsingTCP*/, Boolean /*forceMulticastOnUnspecified*/,RTSPClient::responseHandler* afterFunc) {
+  subsession->setSessionId("mumble"); // anything that's non-NULL will work
+
+  ////////// BEGIN hack code that should really be implemented in SIPClient //////////
+  // Parse the "Transport:" header parameters:
+  // We do not send audio, but we need port for RTCP
+  char* serverAddressStr;
+  portNumBits serverPortNum;
+  unsigned char rtpChannelId, rtcpChannelId;
+
+  rtpChannelId = rtcpChannelId = 0xff;
+  serverPortNum = 0;
+  serverAddressStr = NULL;
+
+  char* sdp = strDup(ourSIPClient->getInviteSdpReply());
+
+  char* lineStart;
+  char* nextLineStart = sdp;
+  while (1) {
+    lineStart = nextLineStart;
+    if (lineStart == NULL) {
+      break;
+    }
+    nextLineStart = getLine(lineStart);
+
+    char* toTagStr = strDupSize(lineStart);
+
+    if (sscanf(lineStart, "m=audio %[^/\r\n]", toTagStr) == 1) {
+      sscanf(toTagStr, "%hu", &serverPortNum);
+    } else if (sscanf(lineStart, "c=IN IP4 %[^/\r\n]", toTagStr) == 1) {
+      serverAddressStr = strDup(toTagStr);
+    }
+    delete[] toTagStr;
+  }
+
+  if(sdp != NULL) {
+    delete[] sdp;
+  }
+
+  delete[] subsession->connectionEndpointName();
+  subsession->connectionEndpointName() = serverAddressStr;
+  subsession->serverPortNum = serverPortNum;
+  subsession->rtpChannelId = rtpChannelId;
+  subsession->rtcpChannelId = rtcpChannelId;
+
+  // Set the RTP and RTCP sockets' destination address and port from the information in the SETUP response (if present):
+  netAddressBits destAddress = subsession->connectionEndpointAddress();
+  if (destAddress != 0) {
+    subsession->setDestinations(destAddress);
+  }
+  ////////// END hack code that should really be implemented in SIPClient //////////
+
+  afterFunc(NULL, 0, NULL);
+}
+
+void startPlayingSession(MediaSession* /*session*/, double /*start*/, double /*end*/, float /*scale*/, RTSPClient::responseHandler* afterFunc) {
+  if (ourSIPClient->sendACK()) {
+    //##### This isn't quite right, because we should really be allowing
+    //##### for the possibility of this ACK getting lost, by retransmitting
+    //##### it *each time* we get a 2xx response from the server.
+    afterFunc(NULL, 0, NULL);
+  } else {
+    afterFunc(NULL, -1, strDup(ourSIPClient->envir().getResultMsg()));
+  }
+}
+void startPlayingSession(MediaSession* /*session*/, const char* /*start*/, const char* /*end*/, float /*scale*/, RTSPClient::responseHandler* afterFunc) {
+	startPlayingSession(NULL,(double)0,(double)0,0,afterFunc);
+}
+
+void tearDownSession(MediaSession* /*session*/, RTSPClient::responseHandler* afterFunc) {
+  if (ourSIPClient == NULL || ourSIPClient->sendBYE()) {
+    afterFunc(NULL, 0, NULL);
+  } else {
+    afterFunc(NULL, -1, strDup(ourSIPClient->envir().getResultMsg()));
+  }
+}
+
+void setUserAgentString(char const* userAgentString) {
+  ourSIPClient->setUserAgentString(userAgentString);
+}
+
+Boolean allowProxyServers = True;
+Boolean controlConnectionUsesTCP = False;
+Boolean supportCodecSelection = True;
+char const* clientProtocolName = "SIP";
diff --git a/testProgs/registerRTSPStream.cpp b/testProgs/registerRTSPStream.cpp
new file mode 100644
index 0000000..a469003
--- /dev/null
+++ b/testProgs/registerRTSPStream.cpp
@@ -0,0 +1,102 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A demonstration application that uses our custom RTSP "REGISTER" command to register a stream
+// (given by "rtsp://" URL) with a RTSP client or proxy server
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+
+char const* programName;
+UsageEnvironment* env;
+
+Boolean requestStreamingViaTCP = False;
+char const* username = NULL;
+char const* password = NULL;
+
+void registerResponseHandler(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  Medium::close(rtspClient);
+
+  // We're done:
+  exit(0);
+}
+
+void usage() {
+  *env << "usage: " << programName << " [-t] [-u <username> <password>] "
+    "<remote-client-or-proxy-server-name-or-address> <remote-client-or-proxy-server-port-number> <rtsp-URL-to-register>"
+    " [proxy-URL-suffix]\n";
+  exit(1);
+}
+
+int main(int argc, char const** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Parse command-line options and arguments:
+  // (Unfortunately we can't use getopt() here; Windoze doesn't have it)
+  programName = argv[0];
+  while (argc > 2) {
+    char const* const opt = argv[1];
+    if (opt[0] != '-') break;
+    switch (opt[1]) {
+      case 't': { // ask the remote client to access the stream via TCP instead of UDP
+	requestStreamingViaTCP = True;
+	break;
+      }
+
+      case 'u': { // specify a username and password
+	if (argc < 4) usage(); // there's no argv[3] (for the "password")
+	username = argv[2];
+	password = argv[3];
+	argv+=2; argc-=2;
+	break;
+      }
+
+      default: {
+	usage();
+	break;
+      }
+    }
+
+    ++argv; --argc;
+  }
+  if (argc != 4 && argc != 5) usage();
+
+  char const* remoteClientNameOrAddress = argv[1];
+
+  portNumBits remoteClientPortNum;
+  if (sscanf(argv[2], "%hu", &remoteClientPortNum) != 1 || remoteClientPortNum == 0 || remoteClientPortNum == 0xFFFF) usage();
+
+  char const* rtspURLToRegister = argv[3];
+
+  char const* proxyURLSuffix = argc == 5 ? argv[4] : NULL;
+
+  Authenticator* ourAuthenticator = username == NULL ? NULL : new Authenticator(username, password);
+
+  // We have the command-line arguments.  Send the command:
+
+  RTSPRegisterSender::createNew(*env, remoteClientNameOrAddress, remoteClientPortNum, rtspURLToRegister,
+				registerResponseHandler, ourAuthenticator,
+				requestStreamingViaTCP, proxyURLSuffix, False/*reuseConnection*/,
+				1/*verbosityLevel*/, programName);
+      // Note: This object will be deleted later, by the response handler
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
diff --git a/testProgs/sapWatch.cpp b/testProgs/sapWatch.cpp
new file mode 100644
index 0000000..8b5e258
--- /dev/null
+++ b/testProgs/sapWatch.cpp
@@ -0,0 +1,73 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A program that receives and prints SDP/SAP announcements
+// (on the default SDP/SAP directory: 224.2.127.254/9875)
+
+#include "Groupsock.hh"
+#include "GroupsockHelper.hh"
+#include "BasicUsageEnvironment.hh"
+#include <stdio.h>
+
+static unsigned const maxPacketSize = 65536;
+static unsigned char packet[maxPacketSize+1];
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  UsageEnvironment* env = BasicUsageEnvironment::createNew(*scheduler);
+
+
+  // Create a 'groupsock' for the input multicast group,port:
+  char const* sessionAddressStr = "224.2.127.254";
+  struct in_addr sessionAddress;
+  sessionAddress.s_addr = our_inet_addr(sessionAddressStr);
+
+  const Port port(9875);
+  const unsigned char ttl = 0; // we're only reading from this mcast group
+
+  Groupsock inputGroupsock(*env, sessionAddress, port, ttl);
+
+  // Start reading and printing incoming packets
+  // (Because this is the only thing we do, we can just do this
+  // synchronously, in a loop, so we don't need to set up an asynchronous
+  // event handler like we do in most of the other test programs.)
+  unsigned packetSize;
+  struct sockaddr_in fromAddress;
+  while (inputGroupsock.handleRead(packet, maxPacketSize,
+				   packetSize, fromAddress)) {
+    printf("\n[packet from %s (%d bytes)]\n", AddressString(fromAddress).val(), packetSize);
+
+    // Ignore the first 8 bytes (SAP header).
+    if (packetSize < 8) {
+      *env << "Ignoring short packet from " << AddressString(fromAddress).val() << "%s!\n";
+      continue;
+    }
+
+    // convert "application/sdp\0" -> "application/sdp\0x20"
+    // or all other nonprintable characters to blank, except new line
+    unsigned idx = 8;
+    while (idx < packetSize) {
+      if (packet[idx] < 0x20 && packet[idx] != '\n') packet[idx] = 0x20;
+      idx++;
+    }
+
+    packet[packetSize] = '\0'; // just in case
+    printf("%s", (char*)(packet+8));
+  }
+
+  return 0; // only to prevent compiler warning
+}
diff --git a/testProgs/testAMRAudioStreamer.cpp b/testProgs/testAMRAudioStreamer.cpp
new file mode 100644
index 0000000..e5dc0af
--- /dev/null
+++ b/testProgs/testAMRAudioStreamer.cpp
@@ -0,0 +1,122 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads an AMR audio file (as defined in RFC 3267)
+// and streams it using RTP
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+#include "GroupsockHelper.hh"
+
+UsageEnvironment* env;
+char const* inputFileName = "test.amr";
+AMRAudioFileSource* audioSource;
+RTPSink* audioSink;
+
+void play(); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create 'groupsocks' for RTP and RTCP:
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);
+  // Note: This is a multicast address.  If you wish instead to stream
+  // using unicast, then you should use the "testOnDemandRTSPServer"
+  // test program - not this test program - as a model.
+
+  const unsigned short rtpPortNum = 16666;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+  const unsigned char ttl = 255;
+
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+  Groupsock rtpGroupsock(*env, destinationAddress, rtpPort, ttl);
+  rtpGroupsock.multicastSendOnly(); // we're a SSM source
+  Groupsock rtcpGroupsock(*env, destinationAddress, rtcpPort, ttl);
+  rtcpGroupsock.multicastSendOnly(); // we're a SSM source
+
+  // Create a 'AMR Audio RTP' sink from the RTP 'groupsock':
+  audioSink = AMRAudioRTPSink::createNew(*env, &rtpGroupsock, 96);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidth = 10; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  RTCPInstance* rtcp
+    = RTCPInstance::createNew(*env, &rtcpGroupsock,
+			      estimatedSessionBandwidth, CNAME,
+			      audioSink, NULL /* we're a server */,
+			      True /* we're a SSM source */);
+  // Note: This starts RTCP running automatically
+
+  // Create and start a RTSP server to serve this stream.
+  RTSPServer* rtspServer = RTSPServer::createNew(*env, 8554);
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+		   "Session streamed by \"testAMRAudioStreamer\"",
+					   True /*SSM*/);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*audioSink, rtcp));
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+
+  // Start the streaming:
+  *env << "Beginning streaming...\n";
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done reading from file\n";
+
+  audioSink->stopPlaying();
+  Medium::close(audioSource);
+  // Note that this also closes the input file that this source read from.
+
+  play();
+}
+
+void play() {
+  // Open the input file as an 'AMR audio file source':
+  AMRAudioFileSource* audioSource
+    = AMRAudioFileSource::createNew(*env, inputFileName);
+  if (audioSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as an AMR audio file source: "
+	 << env->getResultMsg() << "\n";
+    exit(1);
+  }
+
+  // Finally, start playing:
+  *env << "Beginning to read from file...\n";
+  audioSink->startPlaying(*audioSource, afterPlaying, audioSink);
+}
diff --git a/testProgs/testDVVideoStreamer.cpp b/testProgs/testDVVideoStreamer.cpp
new file mode 100644
index 0000000..7f03936
--- /dev/null
+++ b/testProgs/testDVVideoStreamer.cpp
@@ -0,0 +1,128 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a DV Video Elementary Stream file,
+// and streams it using RTP
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+#include "GroupsockHelper.hh"
+
+UsageEnvironment* env;
+char const* inputFileName = "test.dv";
+DVVideoStreamFramer* videoSource;
+RTPSink* videoSink;
+
+void play(); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create 'groupsocks' for RTP and RTCP:
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);
+  // Note: This is a multicast address.  If you wish instead to stream
+  // using unicast, then you should use the "testOnDemandRTSPServer"
+  // test program - not this test program - as a model.
+
+  const unsigned short rtpPortNum = 18888;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+  const unsigned char ttl = 255;
+
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+  Groupsock rtpGroupsock(*env, destinationAddress, rtpPort, ttl);
+  rtpGroupsock.multicastSendOnly(); // we're a SSM source
+  Groupsock rtcpGroupsock(*env, destinationAddress, rtcpPort, ttl);
+  rtcpGroupsock.multicastSendOnly(); // we're a SSM source
+
+  // Create a 'DV Video RTP' sink from the RTP 'groupsock':
+  // (But first, make sure that its buffers will be large enough to handle the huge size of DV frames (as big as 288000).)
+  OutPacketBuffer::maxSize = 300000;
+  videoSink = DVVideoRTPSink::createNew(*env, &rtpGroupsock, 96);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidth = 50000; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  RTCPInstance* rtcp
+  = RTCPInstance::createNew(*env, &rtcpGroupsock,
+			    estimatedSessionBandwidth, CNAME,
+			    videoSink, NULL /* we're a server */,
+			    True /* we're a SSM source */);
+  // Note: This starts RTCP running automatically
+
+  RTSPServer* rtspServer = RTSPServer::createNew(*env, 8554);
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+		   "Session streamed by \"testDVVideoStreamer\"",
+					   True /*SSM*/);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*videoSink, rtcp));
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+
+  // Start the streaming:
+  *env << "Beginning streaming...\n";
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done reading from file\n";
+
+  videoSink->stopPlaying();
+  Medium::close(videoSource);
+  // Note that this also closes the input file that this source read from.
+
+  // Start playing once again:
+  play();
+}
+
+void play() {
+  // Open the input file as a 'byte-stream file source':
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (fileSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  FramedSource* videoES = fileSource;
+
+  // Create a framer for the Video Elementary Stream:
+  videoSource = DVVideoStreamFramer::createNew(*env, videoES);
+
+  // Finally, start playing:
+  *env << "Beginning to read from file...\n";
+  videoSink->startPlaying(*videoSource, afterPlaying, videoSink);
+}
diff --git a/testProgs/testGSMStreamer.cpp b/testProgs/testGSMStreamer.cpp
new file mode 100644
index 0000000..706fe3e
--- /dev/null
+++ b/testProgs/testGSMStreamer.cpp
@@ -0,0 +1,168 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that streams GSM audio via RTP/RTCP
+// main program
+
+// NOTE: This program assumes the existence of a (currently nonexistent)
+// function called "createNewGSMAudioSource()".
+
+#include "liveMedia.hh"
+#include "GroupsockHelper.hh"
+
+#include "BasicUsageEnvironment.hh"
+
+////////// Main program //////////
+
+// To stream using "source-specific multicast" (SSM), uncomment the following:
+//#define USE_SSM 1
+#ifdef USE_SSM
+Boolean const isSSM = True;
+#else
+Boolean const isSSM = False;
+#endif
+
+// To set up an internal RTSP server, uncomment the following:
+//#define IMPLEMENT_RTSP_SERVER 1
+// (Note that this RTSP server works for multicast only)
+
+#ifdef IMPLEMENT_RTSP_SERVER
+RTSPServer* rtspServer;
+#endif
+
+UsageEnvironment* env;
+
+void afterPlaying(void* clientData); // forward
+
+// A structure to hold the state of the current session.
+// It is used in the "afterPlaying()" function to clean up the session.
+struct sessionState_t {
+  FramedSource* source;
+  RTPSink* sink;
+  RTCPInstance* rtcpInstance;
+  Groupsock* rtpGroupsock;
+  Groupsock* rtcpGroupsock;
+} sessionState;
+
+void play(); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create 'groupsocks' for RTP and RTCP:
+  char* destinationAddressStr
+#ifdef USE_SSM
+    = "232.255.42.42";
+#else
+    = "239.255.42.42";
+  // Note: This is a multicast address.  If you wish to stream using
+  // unicast instead, then replace this string with the unicast address
+  // of the (single) destination.  (You may also need to make a similar
+  // change to the receiver program.)
+#endif
+  const unsigned short rtpPortNum = 6666;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+  const unsigned char ttl = 1; // low, in case routers don't admin scope
+
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = our_inet_addr(destinationAddressStr);
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+  sessionState.rtpGroupsock
+    = new Groupsock(*env, destinationAddress, rtpPort, ttl);
+  sessionState.rtcpGroupsock
+    = new Groupsock(*env, destinationAddress, rtcpPort, ttl);
+#ifdef USE_SSM
+  sessionState.rtpGroupsock->multicastSendOnly();
+  sessionState.rtcpGroupsock->multicastSendOnly();
+#endif
+
+  // Create a 'GSM RTP' sink from the RTP 'groupsock':
+  sessionState.sink
+    = GSMAudioRTPSink::createNew(*env, sessionState.rtpGroupsock);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidth = 160; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  sessionState.rtcpInstance
+    = RTCPInstance::createNew(*env, sessionState.rtcpGroupsock,
+			      estimatedSessionBandwidth, CNAME,
+			      sessionState.sink, NULL /* we're a server */,
+			      isSSM);
+  // Note: This starts RTCP running automatically
+
+#ifdef IMPLEMENT_RTSP_SERVER
+  rtspServer = RTSPServer::createNew(*env, 8554);
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "%s\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", "GSM input",
+		"Session streamed by \"testGSMStreamer\"", isSSM);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*sessionState.sink, sessionState.rtcpInstance));
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+#endif
+
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+  return 0; // only to prevent compiler warning
+}
+
+void play() {
+  // Open the input source:
+  extern FramedSource* createNewGSMAudioSource(UsageEnvironment&);
+  sessionState.source = createNewGSMAudioSource(*env);
+  if (sessionState.source == NULL) {
+    *env << "Failed to create GSM source\n";
+    exit(1);
+  }
+
+  // Finally, start the streaming:
+  *env << "Beginning streaming...\n";
+  sessionState.sink->startPlaying(*sessionState.source, afterPlaying, NULL);
+}
+
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done streaming\n";
+
+  sessionState.sink->stopPlaying();
+
+  // End this loop by closing the media:
+#ifdef IMPLEMENT_RTSP_SERVER
+  Medium::close(rtspServer);
+#endif
+  Medium::close(sessionState.rtcpInstance);
+  Medium::close(sessionState.sink);
+  delete sessionState.rtpGroupsock;
+  Medium::close(sessionState.source);
+  delete sessionState.rtcpGroupsock;
+
+  // And start another loop:
+  play();
+}
diff --git a/testProgs/testH264VideoStreamer.cpp b/testProgs/testH264VideoStreamer.cpp
new file mode 100644
index 0000000..ab3b942
--- /dev/null
+++ b/testProgs/testH264VideoStreamer.cpp
@@ -0,0 +1,132 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a H.264 Elementary Stream video file
+// and streams it using RTP
+// main program
+//
+// NOTE: For this application to work, the H.264 Elementary Stream video file *must* contain SPS and PPS NAL units,
+// ideally at or near the start of the file.  These SPS and PPS NAL units are used to specify 'configuration' information
+// that is set in the output stream's SDP description (by the RTSP server that is built in to this application).
+// Note also that - unlike some other "*Streamer" demo applications - the resulting stream can be received only using a
+// RTSP client (such as "openRTSP")
+
+#include <liveMedia.hh>
+#include <BasicUsageEnvironment.hh>
+#include <GroupsockHelper.hh>
+
+UsageEnvironment* env;
+char const* inputFileName = "test.264";
+H264VideoStreamFramer* videoSource;
+RTPSink* videoSink;
+
+void play(); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create 'groupsocks' for RTP and RTCP:
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);
+  // Note: This is a multicast address.  If you wish instead to stream
+  // using unicast, then you should use the "testOnDemandRTSPServer"
+  // test program - not this test program - as a model.
+
+  const unsigned short rtpPortNum = 18888;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+  const unsigned char ttl = 255;
+
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+  Groupsock rtpGroupsock(*env, destinationAddress, rtpPort, ttl);
+  rtpGroupsock.multicastSendOnly(); // we're a SSM source
+  Groupsock rtcpGroupsock(*env, destinationAddress, rtcpPort, ttl);
+  rtcpGroupsock.multicastSendOnly(); // we're a SSM source
+
+  // Create a 'H264 Video RTP' sink from the RTP 'groupsock':
+  OutPacketBuffer::maxSize = 100000;
+  videoSink = H264VideoRTPSink::createNew(*env, &rtpGroupsock, 96);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidth = 500; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  RTCPInstance* rtcp
+  = RTCPInstance::createNew(*env, &rtcpGroupsock,
+			    estimatedSessionBandwidth, CNAME,
+			    videoSink, NULL /* we're a server */,
+			    True /* we're a SSM source */);
+  // Note: This starts RTCP running automatically
+
+  RTSPServer* rtspServer = RTSPServer::createNew(*env, 8554);
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+		   "Session streamed by \"testH264VideoStreamer\"",
+					   True /*SSM*/);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*videoSink, rtcp));
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+
+  // Start the streaming:
+  *env << "Beginning streaming...\n";
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done reading from file\n";
+  videoSink->stopPlaying();
+  Medium::close(videoSource);
+  // Note that this also closes the input file that this source read from.
+
+  // Start playing once again:
+  play();
+}
+
+void play() {
+  // Open the input file as a 'byte-stream file source':
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (fileSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+         << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  FramedSource* videoES = fileSource;
+
+  // Create a framer for the Video Elementary Stream:
+  videoSource = H264VideoStreamFramer::createNew(*env, videoES);
+
+  // Finally, start playing:
+  *env << "Beginning to read from file...\n";
+  videoSink->startPlaying(*videoSource, afterPlaying, videoSink);
+}
diff --git a/testProgs/testH264VideoToHLSSegments.cpp b/testProgs/testH264VideoToHLSSegments.cpp
new file mode 100644
index 0000000..faaa44d
--- /dev/null
+++ b/testProgs/testH264VideoToHLSSegments.cpp
@@ -0,0 +1,106 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A program that converts a H.264 (Elementary Stream) video file into sequence of
+// HLS (HTTP Live Streaming) segments, plus a ".m3u8" file that can be accessed via a web browser.
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+
+#define OUR_HLS_SEGMENTATION_DURATION 6
+#define OUR_HLS_FILENAME_PREFIX "hlsTest"
+char const* inputFileName = "in.264";
+FILE* ourM3U8Fid = NULL;
+
+void segmentationCallback(void* clientData, char const* segmentFileName, double segmentDuration); // forward
+void afterPlaying(void* clientData); // forward
+
+UsageEnvironment* env;
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Open the input file as a 'byte-stream file source':
+  FramedSource* inputSource = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (inputSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  // Create a 'framer' filter for this file source, to generate presentation times for each NAL unit:
+  H264VideoStreamFramer* framer
+    = H264VideoStreamFramer::createNew(*env, inputSource,
+				       True/*includeStartCodeInOutput*/,
+				       True/*insertAccessUnitDelimiters*/);
+
+  // Then create a filter that packs the H.264 video data into a Transport Stream:
+  MPEG2TransportStreamFromESSource* tsFrames = MPEG2TransportStreamFromESSource::createNew(*env);
+  tsFrames->addNewVideoSource(framer, 5/*mpegVersion: H.264*/);
+  
+  // Create a 'HLS Segmenter' as the media sink:
+  MediaSink* outputSink
+    = HLSSegmenter::createNew(*env, OUR_HLS_SEGMENTATION_DURATION, OUR_HLS_FILENAME_PREFIX,
+			      segmentationCallback);
+
+  // Finally, start playing:
+  *env << "Beginning to read...\n";
+  outputSink->startPlaying(*tsFrames, afterPlaying, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void segmentationCallback(void* /*clientData*/,
+			  char const* segmentFileName, double segmentDuration) {
+  if (ourM3U8Fid == NULL) {
+    // Open our ".m3u8" file for output, and write the prefix:
+    char* ourM3U8FileName = new char[strlen(OUR_HLS_FILENAME_PREFIX) + 5/*strlen(".m3u8")*/ + 1];
+    sprintf(ourM3U8FileName, "%s.m3u8", OUR_HLS_FILENAME_PREFIX);
+    ourM3U8Fid = fopen(ourM3U8FileName, "wb");
+
+    fprintf(ourM3U8Fid,
+	    "#EXTM3U\n"
+	    "#EXT-X-VERSION:3\n"
+	    "#EXT-X-INDEPENDENT-SEGMENTS\n"
+	    "#EXT-X-TARGETDURATION:%u\n"
+	    "#EXT-X-MEDIA-SEQUENCE:0\n",
+	    OUR_HLS_SEGMENTATION_DURATION);
+  }
+
+  // Update our ".m3u8" file with information about this most recent segment:
+  fprintf(ourM3U8Fid,
+	  "#EXTINF:%f,\n"
+	  "%s\n",
+	  segmentDuration,
+	  segmentFileName);
+  
+  fprintf(stderr, "Wrote segment \"%s\" (duration: %f seconds)\n", segmentFileName, segmentDuration);
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...Done reading\n";
+
+  // Complete and close our ".m3u8" file:
+  fprintf(ourM3U8Fid, "#EXT-X-ENDLIST\n");
+
+  fprintf(stderr, "Wrote %s.m3u8\n", OUR_HLS_FILENAME_PREFIX);
+  exit(0);
+}
diff --git a/testProgs/testH264VideoToTransportStream.cpp b/testProgs/testH264VideoToTransportStream.cpp
new file mode 100644
index 0000000..d400f0c
--- /dev/null
+++ b/testProgs/testH264VideoToTransportStream.cpp
@@ -0,0 +1,70 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A program that converts a H.264 (Elementary Stream) video file into a Transport Stream file.
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+
+char const* inputFileName = "in.264";
+char const* outputFileName = "out.ts";
+
+void afterPlaying(void* clientData); // forward
+
+UsageEnvironment* env;
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Open the input file as a 'byte-stream file source':
+  FramedSource* inputSource = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (inputSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  // Create a 'framer' filter for this file source, to generate presentation times for each NAL unit:
+  H264VideoStreamFramer* framer = H264VideoStreamFramer::createNew(*env, inputSource, True/*includeStartCodeInOutput*/);
+
+  // Then create a filter that packs the H.264 video data into a Transport Stream:
+  MPEG2TransportStreamFromESSource* tsFrames = MPEG2TransportStreamFromESSource::createNew(*env);
+  tsFrames->addNewVideoSource(framer, 5/*mpegVersion: H.264*/);
+  
+  // Open the output file as a 'file sink':
+  MediaSink* outputSink = FileSink::createNew(*env, outputFileName);
+  if (outputSink == NULL) {
+    *env << "Unable to open file \"" << outputFileName << "\" as a file sink\n";
+    exit(1);
+  }
+
+  // Finally, start playing:
+  *env << "Beginning to read...\n";
+  outputSink->startPlaying(*tsFrames, afterPlaying, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "Done reading.\n";
+  *env << "Wrote output file: \"" << outputFileName << "\"\n";
+  exit(0);
+}
diff --git a/testProgs/testH265VideoStreamer.cpp b/testProgs/testH265VideoStreamer.cpp
new file mode 100644
index 0000000..ff6d3d5
--- /dev/null
+++ b/testProgs/testH265VideoStreamer.cpp
@@ -0,0 +1,133 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a H.265 Elementary Stream video file
+// and streams it using RTP
+// main program
+//
+// NOTE: For this application to work, the H.265 Elementary Stream video file *must* contain
+// VPS, SPS and PPS NAL units, ideally at or near the start of the file.
+// These VPS, SPS and PPS NAL units are used to specify 'configuration' information that is set in
+// the output stream's SDP description (by the RTSP server that is built in to this application).
+// Note also that - unlike some other "*Streamer" demo applications - the resulting stream can be
+// received only using a RTSP client (such as "openRTSP")
+
+#include <liveMedia.hh>
+#include <BasicUsageEnvironment.hh>
+#include <GroupsockHelper.hh>
+
+UsageEnvironment* env;
+char const* inputFileName = "test.265";
+H265VideoStreamFramer* videoSource;
+RTPSink* videoSink;
+
+void play(); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create 'groupsocks' for RTP and RTCP:
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);
+  // Note: This is a multicast address.  If you wish instead to stream
+  // using unicast, then you should use the "testOnDemandRTSPServer"
+  // test program - not this test program - as a model.
+
+  const unsigned short rtpPortNum = 18888;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+  const unsigned char ttl = 255;
+
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+  Groupsock rtpGroupsock(*env, destinationAddress, rtpPort, ttl);
+  rtpGroupsock.multicastSendOnly(); // we're a SSM source
+  Groupsock rtcpGroupsock(*env, destinationAddress, rtcpPort, ttl);
+  rtcpGroupsock.multicastSendOnly(); // we're a SSM source
+
+  // Create a 'H265 Video RTP' sink from the RTP 'groupsock':
+  OutPacketBuffer::maxSize = 100000;
+  videoSink = H265VideoRTPSink::createNew(*env, &rtpGroupsock, 96);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidth = 500; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  RTCPInstance* rtcp
+  = RTCPInstance::createNew(*env, &rtcpGroupsock,
+			    estimatedSessionBandwidth, CNAME,
+			    videoSink, NULL /* we're a server */,
+			    True /* we're a SSM source */);
+  // Note: This starts RTCP running automatically
+
+  RTSPServer* rtspServer = RTSPServer::createNew(*env, 8554);
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+		   "Session streamed by \"testH265VideoStreamer\"",
+					   True /*SSM*/);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*videoSink, rtcp));
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+
+  // Start the streaming:
+  *env << "Beginning streaming...\n";
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done reading from file\n";
+  videoSink->stopPlaying();
+  Medium::close(videoSource);
+  // Note that this also closes the input file that this source read from.
+
+  // Start playing once again:
+  play();
+}
+
+void play() {
+  // Open the input file as a 'byte-stream file source':
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (fileSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+         << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  FramedSource* videoES = fileSource;
+
+  // Create a framer for the Video Elementary Stream:
+  videoSource = H265VideoStreamFramer::createNew(*env, videoES);
+
+  // Finally, start playing:
+  *env << "Beginning to read from file...\n";
+  videoSink->startPlaying(*videoSource, afterPlaying, videoSink);
+}
diff --git a/testProgs/testH265VideoToTransportStream.cpp b/testProgs/testH265VideoToTransportStream.cpp
new file mode 100644
index 0000000..d7e21b3
--- /dev/null
+++ b/testProgs/testH265VideoToTransportStream.cpp
@@ -0,0 +1,70 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A program that converts a H.265 (Elementary Stream) video file into a Transport Stream file.
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+
+char const* inputFileName = "in.265";
+char const* outputFileName = "out.ts";
+
+void afterPlaying(void* clientData); // forward
+
+UsageEnvironment* env;
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Open the input file as a 'byte-stream file source':
+  FramedSource* inputSource = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (inputSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  // Create a 'framer' filter for this file source, to generate presentation times for each NAL unit:
+  H265VideoStreamFramer* framer = H265VideoStreamFramer::createNew(*env, inputSource, True/*includeStartCodeInOutput*/);
+
+  // Then create a filter that packs the H.265 video data into a Transport Stream:
+  MPEG2TransportStreamFromESSource* tsFrames = MPEG2TransportStreamFromESSource::createNew(*env);
+  tsFrames->addNewVideoSource(framer, 6/*mpegVersion: H.265*/);
+  
+  // Open the output file as a 'file sink':
+  MediaSink* outputSink = FileSink::createNew(*env, outputFileName);
+  if (outputSink == NULL) {
+    *env << "Unable to open file \"" << outputFileName << "\" as a file sink\n";
+    exit(1);
+  }
+
+  // Finally, start playing:
+  *env << "Beginning to read...\n";
+  outputSink->startPlaying(*tsFrames, afterPlaying, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "Done reading.\n";
+  *env << "Wrote output file: \"" << outputFileName << "\"\n";
+  exit(0);
+}
diff --git a/testProgs/testMKVSplitter.cpp b/testProgs/testMKVSplitter.cpp
new file mode 100644
index 0000000..2ebfb72
--- /dev/null
+++ b/testProgs/testMKVSplitter.cpp
@@ -0,0 +1,137 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a ".mkv" (i.e., Matroska) file, demultiplexes each track
+// (video, audio, subtitles), and outputs each track to a file.
+// main program
+
+#include <liveMedia.hh>
+#include <BasicUsageEnvironment.hh>
+
+UsageEnvironment* env;
+char const* programName;
+char const* inputFileName;
+
+// An array of structures representing the state of the video, audio, and subtitle tracks:
+static struct {
+  unsigned trackNumber;
+  FramedSource* source;
+  FileSink* sink;
+} trackState[3];
+
+void onMatroskaFileCreation(MatroskaFile* newFile, void* clientData); // forward
+
+void usage() {
+  *env << "usage: " << programName << " <input-Matroska-or-WebM-file-name>\n";
+  exit(1);
+}
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Parse the command line:
+  programName = argv[0];
+  if (argc != 2) usage();
+  inputFileName = argv[1];
+
+  // Arrange to create a "MatroskaFile" object for the specified file.
+  // (Note that this object is not created immediately, but instead via a callback.)
+  MatroskaFile::createNew(*env, inputFileName, onMatroskaFileCreation, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void play(); // forward
+
+void onMatroskaFileCreation(MatroskaFile* matroskaFile, void* /*clientData*/) {
+  // Create a new demultiplexor for the file:
+  MatroskaDemux* matroskaDemux = matroskaFile->newDemux();
+
+  // Create source streams and file sinks for each preferred track;
+
+  unsigned numActiveTracks = 0;
+  for (unsigned i = 0; i < 3; ++i) {
+    unsigned trackNumber;
+    trackState[i].source = matroskaDemux->newDemuxedTrack(trackNumber);
+    trackState[i].trackNumber = trackNumber;
+    trackState[i].sink = NULL; // by default; may get changed below
+    
+    if (trackState[i].source == NULL) continue;
+    
+    char const* mimeType = matroskaFile->trackMIMEType(trackNumber);
+    if (mimeType == NULL || mimeType[0] == '\0') continue;
+    fprintf(stderr, "#####@@@@@ MatroskaDemuxedTrack for mimeType %s is %p\n", mimeType, trackState[i].source);
+
+    // Create the file name from "mimeType" by replacing "/" with "-", and adding the
+    // track number at the end:
+    char* fileName = new char[strlen(mimeType) + 100/*more than enough space*/];
+    sprintf(fileName, "%s-%d", mimeType, trackNumber);
+    for (unsigned j = 0; fileName[j] != '\0'; ++j) {
+      if (fileName[j] == '/') {
+	fileName[j] = '-';
+	break;
+      }
+    }
+
+    trackState[i].sink
+	= matroskaFile->createFileSinkForTrackNumber(trackNumber, fileName);
+    if (trackState[i].sink != NULL) {
+      ++numActiveTracks;
+      fprintf(stderr, "Created output file \"%s\" for track %d\n", fileName, trackNumber);
+    }
+  }
+
+  if (numActiveTracks == 0) {
+    *env << "Error: The Matroska file \"" << inputFileName << "\" has no streamable tracks\n";
+    *env << "(Perhaps the file does not exist, or is not a 'Matroska' file.)\n";
+    exit(1);
+  }
+
+  // Start the streaming:
+  play();
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done reading from file\n";
+
+  // Stop playing all sinks, then close the source streams
+  // (which will also close the demultiplexor itself):
+  unsigned i;
+  for (i = 0; i < 3; ++i) {
+    if (trackState[i].sink != NULL) trackState[i].sink->stopPlaying();
+    Medium::close(trackState[i].source); trackState[i].source = NULL;
+  }
+
+  // Finally, close the sinks:
+  for (i = 0; i < 3; ++i) Medium::close(trackState[i].sink);
+
+  exit(0);
+}
+
+void play() {
+  *env << "Beginning to read from file...\n";
+
+  // Start playing each track's RTP sink from its corresponding source:
+  for (unsigned i = 0; i < 3; ++i) {
+    if (trackState[i].sink != NULL && trackState[i].source != NULL) {
+      trackState[i].sink->startPlaying(*trackState[i].source, afterPlaying, NULL);
+    }
+  }
+}
diff --git a/testProgs/testMKVStreamer.cpp b/testProgs/testMKVStreamer.cpp
new file mode 100644
index 0000000..f46b9e2
--- /dev/null
+++ b/testProgs/testMKVStreamer.cpp
@@ -0,0 +1,178 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a ".mkv" (i.e., Matroska) file, demultiplexes each track
+// (video, audio, subtitles), and streams each track using RTP multicast.
+// main program
+
+#include <liveMedia.hh>
+#include <BasicUsageEnvironment.hh>
+#include <GroupsockHelper.hh>
+
+UsageEnvironment* env;
+char const* inputFileName = "test.mkv";
+struct in_addr destinationAddress;
+RTSPServer* rtspServer;
+ServerMediaSession* sms;
+MatroskaFile* matroskaFile;
+MatroskaDemux* matroskaDemux;
+
+// An array of structures representing the state of the video, audio, and subtitle tracks:
+static struct {
+  unsigned trackNumber;
+  FramedSource* source;
+  RTPSink* sink;
+  RTCPInstance* rtcp;
+} trackState[3];
+
+void onMatroskaFileCreation(MatroskaFile* newFile, void* clientData); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Define our destination (multicast) IP address:
+  destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);
+    // Note: This is a multicast address.  If you wish instead to stream
+    // using unicast, then you should use the "testOnDemandRTSPServer"
+    // test program - not this test program - as a model.
+
+  // Create our RTSP server.  (Receivers will need to use RTSP to access the stream.)
+  rtspServer = RTSPServer::createNew(*env, 8554);
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  sms = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+				      "Session streamed by \"testMKVStreamer\"",
+				      True /*SSM*/);
+
+  // Arrange to create a "MatroskaFile" object for the specified file.
+  // (Note that this object is not created immediately, but instead via a callback.)
+  MatroskaFile::createNew(*env, inputFileName, onMatroskaFileCreation, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void play(); // forward
+
+void onMatroskaFileCreation(MatroskaFile* newFile, void* /*clientData*/) {
+  matroskaFile = newFile;
+
+  // Create a new demultiplexor for the file:
+  matroskaDemux = matroskaFile->newDemux();
+
+  // Create source streams, "RTPSink"s, and "RTCPInstance"s for each preferred track;
+  unsigned short rtpPortNum = 44444;
+  const unsigned char ttl = 255;
+
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+
+  for (unsigned i = 0; i < 3; ++i) {
+    unsigned trackNumber;
+    FramedSource* baseSource = matroskaDemux->newDemuxedTrack(trackNumber);
+    trackState[i].trackNumber = trackNumber;
+
+    unsigned estBitrate, numFiltersInFrontOfTrack;
+    trackState[i].source = matroskaFile
+      ->createSourceForStreaming(baseSource, trackNumber, estBitrate, numFiltersInFrontOfTrack);
+    trackState[i].sink = NULL; // by default; may get changed below
+    trackState[i].rtcp = NULL; // ditto
+    
+    if (trackState[i].source != NULL) {
+      Groupsock* rtpGroupsock = new Groupsock(*env, destinationAddress, rtpPortNum, ttl);
+      Groupsock* rtcpGroupsock = new Groupsock(*env, destinationAddress, rtpPortNum+1, ttl);
+      rtpPortNum += 2;
+
+      trackState[i].sink
+	= matroskaFile->createRTPSinkForTrackNumber(trackNumber, rtpGroupsock, 96+i);
+      if (trackState[i].sink != NULL) {
+	if (trackState[i].sink->estimatedBitrate() > 0) {
+	  estBitrate = trackState[i].sink->estimatedBitrate(); // hack
+	}
+	trackState[i].rtcp
+	  = RTCPInstance::createNew(*env, rtcpGroupsock, estBitrate, CNAME,
+				    trackState[i].sink, NULL /* we're a server */,
+				    True /* we're a SSM source */);
+          // Note: This starts RTCP running automatically
+
+	// Having set up a track for streaming, add it to our RTSP server's "ServerMediaSession":
+	sms->addSubsession(PassiveServerMediaSubsession::createNew(*trackState[i].sink, trackState[i].rtcp));
+      }
+    }
+  }
+
+  if (sms->numSubsessions() == 0) {
+    *env << "Error: The Matroska file \"" << inputFileName << "\" has no streamable tracks\n";
+    *env << "(Perhaps the file does not exist, or is not a 'Matroska' file.)\n";
+    exit(1);
+  }
+
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+
+  // Start the streaming:
+  play();
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done reading from file\n";
+
+  // Stop playing all "RTPSink"s, then close the source streams
+  // (which will also close the demultiplexor itself):
+  unsigned i;
+  for (i = 0; i < 3; ++i) {
+    if (trackState[i].sink != NULL) trackState[i].sink->stopPlaying();
+    Medium::close(trackState[i].source); trackState[i].source = NULL;
+  }
+
+  // Create a new demultiplexor from our Matroska file, then new data sources for each track:
+  matroskaDemux = matroskaFile->newDemux();
+  for (i = 0; i < 3; ++i) {
+    if (trackState[i].trackNumber != 0) {
+      FramedSource* baseSource
+	= matroskaDemux->newDemuxedTrackByTrackNumber(trackState[i].trackNumber);
+
+      unsigned estBitrate, numFiltersInFrontOfTrack;
+      trackState[i].source = matroskaFile
+	->createSourceForStreaming(baseSource, trackState[i].trackNumber,
+				   estBitrate, numFiltersInFrontOfTrack);
+    }
+  }
+
+  // Start playing once again:
+  play();
+}
+
+void play() {
+  *env << "Beginning to read from file...\n";
+
+  // Start playing each track's RTP sink from its corresponding source:
+  for (unsigned i = 0; i < 3; ++i) {
+    if (trackState[i].sink != NULL && trackState[i].source != NULL) {
+      trackState[i].sink->startPlaying(*trackState[i].source, afterPlaying, NULL);
+    }
+  }
+}
diff --git a/testProgs/testMP3-using-ADUs.sdp b/testProgs/testMP3-using-ADUs.sdp
new file mode 100644
index 0000000..d164914
--- /dev/null
+++ b/testProgs/testMP3-using-ADUs.sdp
@@ -0,0 +1,10 @@
+v=0
+o=- 49452 4 IN IP4 127.0.0.1
+s=Test MP3 session
+i=Parameters for the session streamed by "testMP3Streamer"
+t=0 0
+a=tool:testMP3Streamer
+a=type:broadcast
+m=audio 6666 RTP/AVP 96
+c=IN IP4 239.255.42.42/127
+a=rtpmap:96 mpa-robust/90000
diff --git a/testProgs/testMP3.sdp b/testProgs/testMP3.sdp
new file mode 100644
index 0000000..750ba79
--- /dev/null
+++ b/testProgs/testMP3.sdp
@@ -0,0 +1,9 @@
+v=0
+o=- 49452 4 IN IP4 127.0.0.1
+s=Test MP3 session
+i=Parameters for the session streamed by "testMP3Streamer"
+t=0 0
+a=tool:testMP3Streamer
+a=type:broadcast
+m=audio 6666 RTP/AVP 14
+c=IN IP4 239.255.42.42/127
diff --git a/testProgs/testMP3Receiver.cpp b/testProgs/testMP3Receiver.cpp
new file mode 100644
index 0000000..773e7bd
--- /dev/null
+++ b/testProgs/testMP3Receiver.cpp
@@ -0,0 +1,150 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that receives a RTP/RTCP multicast MP3 stream,
+// and outputs the resulting MP3 file stream to 'stdout'
+// main program
+
+#include "liveMedia.hh"
+#include "GroupsockHelper.hh"
+
+#include "BasicUsageEnvironment.hh"
+
+// To receive a stream of 'ADUs' rather than raw MP3 frames, uncomment this:
+//#define STREAM_USING_ADUS 1
+// (For more information about ADUs and interleaving,
+//  see <http://www.live555.com/rtp-mp3/>)
+
+// To receive a "source-specific multicast" (SSM) stream, uncomment this:
+//#define USE_SSM 1
+
+void afterPlaying(void* clientData); // forward
+
+// A structure to hold the state of the current session.
+// It is used in the "afterPlaying()" function to clean up the session.
+struct sessionState_t {
+  FramedSource* source;
+  FileSink* sink;
+  RTCPInstance* rtcpInstance;
+} sessionState;
+
+UsageEnvironment* env;
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create the data sink for 'stdout':
+  sessionState.sink = FileSink::createNew(*env, "stdout");
+  // Note: The string "stdout" is handled as a special case.
+  // A real file name could have been used instead.
+
+  // Create 'groupsocks' for RTP and RTCP:
+  char const* sessionAddressStr
+#ifdef USE_SSM
+    = "232.255.42.42";
+#else
+    = "239.255.42.42";
+  // Note: If the session is unicast rather than multicast,
+  // then replace this string with "0.0.0.0"
+#endif
+  const unsigned short rtpPortNum = 6666;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+#ifndef USE_SSM
+  const unsigned char ttl = 1; // low, in case routers don't admin scope
+#endif
+
+  struct in_addr sessionAddress;
+  sessionAddress.s_addr = our_inet_addr(sessionAddressStr);
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+#ifdef USE_SSM
+  char* sourceAddressStr = "aaa.bbb.ccc.ddd";
+                           // replace this with the real source address
+  struct in_addr sourceFilterAddress;
+  sourceFilterAddress.s_addr = our_inet_addr(sourceAddressStr);
+
+  Groupsock rtpGroupsock(*env, sessionAddress, sourceFilterAddress, rtpPort);
+  Groupsock rtcpGroupsock(*env, sessionAddress, sourceFilterAddress, rtcpPort);
+  rtcpGroupsock.changeDestinationParameters(sourceFilterAddress,0,~0);
+      // our RTCP "RR"s are sent back using unicast
+#else
+  Groupsock rtpGroupsock(*env, sessionAddress, rtpPort, ttl);
+  Groupsock rtcpGroupsock(*env, sessionAddress, rtcpPort, ttl);
+#endif
+
+  RTPSource* rtpSource;
+#ifndef STREAM_USING_ADUS
+  // Create the data source: a "MPEG Audio RTP source"
+  rtpSource = MPEG1or2AudioRTPSource::createNew(*env, &rtpGroupsock);
+#else
+  // Create the data source: a "MP3 *ADU* RTP source"
+  unsigned char rtpPayloadFormat = 96; // a dynamic payload type
+  rtpSource
+    = MP3ADURTPSource::createNew(*env, &rtpGroupsock, rtpPayloadFormat);
+#endif
+
+  // Create (and start) a 'RTCP instance' for the RTP source:
+  const unsigned estimatedSessionBandwidth = 160; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  sessionState.rtcpInstance
+    = RTCPInstance::createNew(*env, &rtcpGroupsock,
+			      estimatedSessionBandwidth, CNAME,
+			      NULL /* we're a client */, rtpSource);
+  // Note: This starts RTCP running automatically
+
+  sessionState.source = rtpSource;
+#ifdef STREAM_USING_ADUS
+  // Add a filter that deinterleaves the ADUs after depacketizing them:
+  sessionState.source
+    = MP3ADUdeinterleaver::createNew(*env, sessionState.source);
+  if (sessionState.source == NULL) {
+    *env << "Unable to create an ADU deinterleaving filter for the source\n";
+    exit(1);
+  }
+
+  // Add another filter that converts these ADUs to MP3s:
+  sessionState.source
+    = MP3FromADUSource::createNew(*env, sessionState.source);
+  if (sessionState.source == NULL) {
+    *env << "Unable to create an ADU->MP3 filter for the source\n";
+    exit(1);
+  }
+#endif
+
+  // Finally, start receiving the multicast stream:
+  *env << "Beginning receiving multicast stream...\n";
+  sessionState.sink->startPlaying(*sessionState.source, afterPlaying, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done receiving\n";
+
+  // End by closing the media:
+  Medium::close(sessionState.rtcpInstance); // Note: Sends a RTCP BYE
+  Medium::close(sessionState.sink);
+  Medium::close(sessionState.source);
+}
diff --git a/testProgs/testMP3Streamer.cpp b/testProgs/testMP3Streamer.cpp
new file mode 100644
index 0000000..c3247d1
--- /dev/null
+++ b/testProgs/testMP3Streamer.cpp
@@ -0,0 +1,199 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that streams a MP3 file via RTP/RTCP
+// main program
+
+#include "liveMedia.hh"
+#include "GroupsockHelper.hh"
+
+#include "BasicUsageEnvironment.hh"
+
+// To stream using 'ADUs' rather than raw MP3 frames, uncomment the following:
+//#define STREAM_USING_ADUS 1
+// To also reorder ADUs before streaming, uncomment the following:
+//#define INTERLEAVE_ADUS 1
+// (For more information about ADUs and interleaving,
+//  see <http://www.live555.com/rtp-mp3/>)
+
+// To stream using "source-specific multicast" (SSM), uncomment the following:
+//#define USE_SSM 1
+#ifdef USE_SSM
+Boolean const isSSM = True;
+#else
+Boolean const isSSM = False;
+#endif
+
+// To set up an internal RTSP server, uncomment the following:
+//#define IMPLEMENT_RTSP_SERVER 1
+// (Note that this RTSP server works for multicast only)
+
+#ifdef IMPLEMENT_RTSP_SERVER
+RTSPServer* rtspServer;
+#endif
+
+UsageEnvironment* env;
+
+// A structure to hold the state of the current session.
+// It is used in the "afterPlaying()" function to clean up the session.
+struct sessionState_t {
+  FramedSource* source;
+  RTPSink* sink;
+  RTCPInstance* rtcpInstance;
+  Groupsock* rtpGroupsock;
+  Groupsock* rtcpGroupsock;
+} sessionState;
+
+char const* inputFileName = "test.mp3";
+
+void play(); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create 'groupsocks' for RTP and RTCP:
+  char const* destinationAddressStr
+#ifdef USE_SSM
+    = "232.255.42.42";
+#else
+    = "239.255.42.42";
+  // Note: This is a multicast address.  If you wish to stream using
+  // unicast instead, then replace this string with the unicast address
+  // of the (single) destination.  (You may also need to make a similar
+  // change to the receiver program.)
+#endif
+  const unsigned short rtpPortNum = 6666;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+  const unsigned char ttl = 1; // low, in case routers don't admin scope
+
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = our_inet_addr(destinationAddressStr);
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+  sessionState.rtpGroupsock
+    = new Groupsock(*env, destinationAddress, rtpPort, ttl);
+  sessionState.rtcpGroupsock
+    = new Groupsock(*env, destinationAddress, rtcpPort, ttl);
+#ifdef USE_SSM
+  sessionState.rtpGroupsock->multicastSendOnly();
+  sessionState.rtcpGroupsock->multicastSendOnly();
+#endif
+
+  // Create a 'MP3 RTP' sink from the RTP 'groupsock':
+#ifdef STREAM_USING_ADUS
+  unsigned char rtpPayloadFormat = 96; // A dynamic payload format code
+  sessionState.sink
+    = MP3ADURTPSink::createNew(*env, sessionState.rtpGroupsock,
+			       rtpPayloadFormat);
+#else
+  sessionState.sink
+    = MPEG1or2AudioRTPSink::createNew(*env, sessionState.rtpGroupsock);
+#endif
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidth = 160; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  sessionState.rtcpInstance
+    = RTCPInstance::createNew(*env, sessionState.rtcpGroupsock,
+			      estimatedSessionBandwidth, CNAME,
+			      sessionState.sink, NULL /* we're a server */,
+			      isSSM);
+  // Note: This starts RTCP running automatically
+
+#ifdef IMPLEMENT_RTSP_SERVER
+  rtspServer = RTSPServer::createNew(*env);
+  // Note that this (attempts to) start a server on the default RTSP server
+  // port: 554.  To use a different port number, add it as an extra
+  // (optional) parameter to the "RTSPServer::createNew()" call above.
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+		"Session streamed by \"testMP3Streamer\"", isSSM);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*sessionState.sink, sessionState.rtcpInstance));
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+#endif
+
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* clientData); // forward
+
+void play() {
+  // Open the file as a 'MP3 file source':
+  sessionState.source = MP3FileSource::createNew(*env, inputFileName);
+  if (sessionState.source == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a MP3 file source\n";
+    exit(1);
+  }
+
+#ifdef STREAM_USING_ADUS
+  // Add a filter that converts the source MP3s to ADUs:
+  sessionState.source
+    = ADUFromMP3Source::createNew(*env, sessionState.source);
+  if (sessionState.source == NULL) {
+    *env << "Unable to create a MP3->ADU filter for the source\n";
+    exit(1);
+  }
+
+#ifdef INTERLEAVE_ADUS
+  // Add another filter that interleaves the ADUs before packetizing them:
+  unsigned char interleaveCycle[] = {0,2,1,3}; // or choose your own order...
+  unsigned const interleaveCycleSize
+    = (sizeof interleaveCycle)/(sizeof (unsigned char));
+  Interleaving interleaving(interleaveCycleSize, interleaveCycle);
+  sessionState.source
+    = MP3ADUinterleaver::createNew(*env, interleaving, sessionState.source);
+  if (sessionState.source == NULL) {
+    *env << "Unable to create an ADU interleaving filter for the source\n";
+    exit(1);
+  }
+#endif
+#endif
+
+  // Finally, start the streaming:
+  *env << "Beginning streaming...\n";
+  sessionState.sink->startPlaying(*sessionState.source, afterPlaying, NULL);
+}
+
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done streaming\n";
+
+  sessionState.sink->stopPlaying();
+
+  // End this loop by closing the current source:
+  Medium::close(sessionState.source);
+
+  // And start another loop:
+  play();
+}
diff --git a/testProgs/testMPEG1or2AudioVideo.sdp b/testProgs/testMPEG1or2AudioVideo.sdp
new file mode 100644
index 0000000..3cb7775
--- /dev/null
+++ b/testProgs/testMPEG1or2AudioVideo.sdp
@@ -0,0 +1,11 @@
+v=0
+o=- 49451 3 IN IP4 127.0.0.1
+s=Test MPEG Audio+Video session
+i=Parameters for the session streamed by "testMPEG1or2AudioVideoStreamer"
+t=0 0
+a=tool:testMPEG1or2AudioVideoStreamer
+a=type:broadcast
+m=audio 6666 RTP/AVP 14
+c=IN IP4 239.255.42.42/127
+m=video 8888 RTP/AVP 32
+c=IN IP4 239.255.42.42/127
diff --git a/testProgs/testMPEG1or2AudioVideoStreamer.cpp b/testProgs/testMPEG1or2AudioVideoStreamer.cpp
new file mode 100644
index 0000000..ff1a839
--- /dev/null
+++ b/testProgs/testMPEG1or2AudioVideoStreamer.cpp
@@ -0,0 +1,202 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a MPEG-1 or 2 Program Stream file,
+// splits it into Audio and Video Elementary Streams,
+// and streams both using RTP
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+#include "GroupsockHelper.hh"
+
+UsageEnvironment* env;
+char const* inputFileName = "test.mpg";
+MPEG1or2Demux* mpegDemux;
+FramedSource* audioSource;
+FramedSource* videoSource;
+RTPSink* audioSink;
+RTPSink* videoSink;
+
+void play(); // forward
+
+// To stream using "source-specific multicast" (SSM), uncomment the following:
+//#define USE_SSM 1
+#ifdef USE_SSM
+Boolean const isSSM = True;
+#else
+Boolean const isSSM = False;
+#endif
+
+// To set up an internal RTSP server, uncomment the following:
+//#define IMPLEMENT_RTSP_SERVER 1
+// (Note that this RTSP server works for multicast only)
+
+// To stream *only* MPEG "I" frames (e.g., to reduce network bandwidth),
+// change the following "False" to "True":
+Boolean iFramesOnly = False;
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create 'groupsocks' for RTP and RTCP:
+  char const* destinationAddressStr
+#ifdef USE_SSM
+    = "232.255.42.42";
+#else
+    = "239.255.42.42";
+  // Note: This is a multicast address.  If you wish to stream using
+  // unicast instead, then replace this string with the unicast address
+  // of the (single) destination.  (You may also need to make a similar
+  // change to the receiver program.)
+#endif
+  const unsigned short rtpPortNumAudio = 6666;
+  const unsigned short rtcpPortNumAudio = rtpPortNumAudio+1;
+  const unsigned short rtpPortNumVideo = 8888;
+  const unsigned short rtcpPortNumVideo = rtpPortNumVideo+1;
+  const unsigned char ttl = 7; // low, in case routers don't admin scope
+
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = our_inet_addr(destinationAddressStr);
+  const Port rtpPortAudio(rtpPortNumAudio);
+  const Port rtcpPortAudio(rtcpPortNumAudio);
+  const Port rtpPortVideo(rtpPortNumVideo);
+  const Port rtcpPortVideo(rtcpPortNumVideo);
+
+  Groupsock rtpGroupsockAudio(*env, destinationAddress, rtpPortAudio, ttl);
+  Groupsock rtcpGroupsockAudio(*env, destinationAddress, rtcpPortAudio, ttl);
+  Groupsock rtpGroupsockVideo(*env, destinationAddress, rtpPortVideo, ttl);
+  Groupsock rtcpGroupsockVideo(*env, destinationAddress, rtcpPortVideo, ttl);
+#ifdef USE_SSM
+  rtpGroupsockAudio.multicastSendOnly();
+  rtcpGroupsockAudio.multicastSendOnly();
+  rtpGroupsockVideo.multicastSendOnly();
+  rtcpGroupsockVideo.multicastSendOnly();
+#endif
+
+  // Create a 'MPEG Audio RTP' sink from the RTP 'groupsock':
+  audioSink = MPEG1or2AudioRTPSink::createNew(*env, &rtpGroupsockAudio);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidthAudio = 160; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+#ifdef IMPLEMENT_RTSP_SERVER
+  RTCPInstance* audioRTCP =
+#endif
+    RTCPInstance::createNew(*env, &rtcpGroupsockAudio,
+			    estimatedSessionBandwidthAudio, CNAME,
+			    audioSink, NULL /* we're a server */, isSSM);
+  // Note: This starts RTCP running automatically
+
+  // Create a 'MPEG Video RTP' sink from the RTP 'groupsock':
+  videoSink = MPEG1or2VideoRTPSink::createNew(*env, &rtpGroupsockVideo);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidthVideo = 4500; // in kbps; for RTCP b/w share
+#ifdef IMPLEMENT_RTSP_SERVER
+  RTCPInstance* videoRTCP =
+#endif
+    RTCPInstance::createNew(*env, &rtcpGroupsockVideo,
+			      estimatedSessionBandwidthVideo, CNAME,
+			      videoSink, NULL /* we're a server */, isSSM);
+  // Note: This starts RTCP running automatically
+
+#ifdef IMPLEMENT_RTSP_SERVER
+  RTSPServer* rtspServer = RTSPServer::createNew(*env);
+  // Note that this (attempts to) start a server on the default RTSP server
+  // port: 554.  To use a different port number, add it as an extra
+  // (optional) parameter to the "RTSPServer::createNew()" call above.
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+		   "Session streamed by \"testMPEG1or2AudioVideoStreamer\"",
+					   isSSM);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*audioSink, audioRTCP));
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*videoSink, videoRTCP));
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+#endif
+
+  // Finally, start the streaming:
+  *env << "Beginning streaming...\n";
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* clientData) {
+  // One of the sinks has ended playing.
+  // Check whether any of the sources have a pending read.  If so,
+  // wait until its sink ends playing also:
+  if (audioSource->isCurrentlyAwaitingData()
+      || videoSource->isCurrentlyAwaitingData()) return;
+
+  // Now that both sinks have ended, close both input sources,
+  // and start playing again:
+  *env << "...done reading from file\n";
+
+  audioSink->stopPlaying();
+  videoSink->stopPlaying();
+      // ensures that both are shut down
+  Medium::close(audioSource);
+  Medium::close(videoSource);
+  Medium::close(mpegDemux);
+  // Note: This also closes the input file that this source read from.
+
+  // Start playing once again:
+  play();
+}
+
+void play() {
+  // Open the input file as a 'byte-stream file source':
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (fileSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  // We must demultiplex Audio and Video Elementary Streams
+  // from the input source:
+  mpegDemux = MPEG1or2Demux::createNew(*env, fileSource);
+  FramedSource* audioES = mpegDemux->newAudioStream();
+  FramedSource* videoES = mpegDemux->newVideoStream();
+
+  // Create a framer for each Elementary Stream:
+  audioSource
+    = MPEG1or2AudioStreamFramer::createNew(*env, audioES);
+  videoSource
+    = MPEG1or2VideoStreamFramer::createNew(*env, videoES, iFramesOnly);
+
+  // Finally, start playing each sink.
+  *env << "Beginning to read from file...\n";
+  videoSink->startPlaying(*videoSource, afterPlaying, videoSink);
+  audioSink->startPlaying(*audioSource, afterPlaying, audioSink);
+}
diff --git a/testProgs/testMPEG1or2ProgramToTransportStream.cpp b/testProgs/testMPEG1or2ProgramToTransportStream.cpp
new file mode 100644
index 0000000..a171ae2
--- /dev/null
+++ b/testProgs/testMPEG1or2ProgramToTransportStream.cpp
@@ -0,0 +1,74 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A program that converts a MPEG-1 or 2 Program Stream file into
+// a Transport Stream file.
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+
+char const* inputFileName = "in.mpg";
+char const* outputFileName = "out.ts";
+
+void afterPlaying(void* clientData); // forward
+
+UsageEnvironment* env;
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Open the input file as a 'byte-stream file source':
+  FramedSource* inputSource = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (inputSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  // Create a MPEG demultiplexor that reads from that source.
+  MPEG1or2Demux* baseDemultiplexor = MPEG1or2Demux::createNew(*env, inputSource);
+
+  // Create, from this, a source that returns raw PES packets:
+  MPEG1or2DemuxedElementaryStream* pesSource = baseDemultiplexor->newRawPESStream();
+
+  // And, from this, a filter that converts to MPEG-2 Transport Stream frames:
+  FramedSource* tsFrames
+    = MPEG2TransportStreamFromPESSource::createNew(*env, pesSource);
+
+  // Open the output file as a 'file sink':
+  MediaSink* outputSink = FileSink::createNew(*env, outputFileName);
+  if (outputSink == NULL) {
+    *env << "Unable to open file \"" << outputFileName << "\" as a file sink\n";
+    exit(1);
+  }
+
+  // Finally, start playing:
+  *env << "Beginning to read...\n";
+  outputSink->startPlaying(*tsFrames, afterPlaying, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "Done reading.\n";
+  *env << "Wrote output file: \"" << outputFileName << "\"\n";
+  exit(0);
+}
diff --git a/testProgs/testMPEG1or2Splitter.cpp b/testProgs/testMPEG1or2Splitter.cpp
new file mode 100644
index 0000000..f09e588
--- /dev/null
+++ b/testProgs/testMPEG1or2Splitter.cpp
@@ -0,0 +1,102 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that splits a MPEG-1 or 2 Program Stream file into
+// video and audio output files.
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+#include <stdlib.h>
+
+char const* inputFileName = "in.mpg";
+char const* outputFileName_video = "out_video.mpg";
+char const* outputFileName_audio = "out_audio.mpg";
+
+void afterPlaying(void* clientData); // forward
+
+// A structure to hold the state of the current session.
+// It is used in the "afterPlaying()" function to clean up the session.
+struct sessionState_t {
+  MPEG1or2Demux* baseDemultiplexor;
+  MediaSource* videoSource;
+  MediaSource* audioSource;
+  FileSink* videoSink;
+  FileSink* audioSink;
+} sessionState;
+
+UsageEnvironment* env;
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Open the input file as a 'byte-stream file source':
+  ByteStreamFileSource* inputSource
+    = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (inputSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  // Create a MPEG demultiplexor that reads from that source.
+  sessionState.baseDemultiplexor = MPEG1or2Demux::createNew(*env, inputSource);
+
+  // Create, from this, our own sources (video and audio):
+  sessionState.videoSource = sessionState.baseDemultiplexor->newVideoStream();
+  sessionState.audioSource = sessionState.baseDemultiplexor->newAudioStream();
+
+  // Create the data sinks (output files):
+  sessionState.videoSink = FileSink::createNew(*env, outputFileName_video);
+  sessionState.audioSink = FileSink::createNew(*env, outputFileName_audio);
+
+  // Finally, start playing each sink.
+  *env << "Beginning to read...\n";
+  sessionState.videoSink->startPlaying(*sessionState.videoSource,
+				       afterPlaying, sessionState.videoSink);
+  sessionState.audioSink->startPlaying(*sessionState.audioSource,
+				       afterPlaying, sessionState.audioSink);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* clientData) {
+  Medium* finishedSink = (Medium*)clientData;
+
+  if (finishedSink == sessionState.videoSink) {
+    *env << "No more video\n";
+    Medium::close(sessionState.videoSink);
+    Medium::close(sessionState.videoSource);
+    sessionState.videoSink = NULL;
+  } else if (finishedSink == sessionState.audioSink) {
+    *env << "No more audio\n";
+    Medium::close(sessionState.audioSink);
+    Medium::close(sessionState.audioSource);
+    sessionState.audioSink = NULL;
+  }
+
+  if (sessionState.videoSink == NULL && sessionState.audioSink == NULL) {
+    *env << "...finished reading\n";
+
+    Medium::close(sessionState.baseDemultiplexor);
+
+    exit(0);
+  }
+}
diff --git a/testProgs/testMPEG1or2Video.sdp b/testProgs/testMPEG1or2Video.sdp
new file mode 100644
index 0000000..c3b9c73
--- /dev/null
+++ b/testProgs/testMPEG1or2Video.sdp
@@ -0,0 +1,9 @@
+v=0
+o=- 49451 3 IN IP4 127.0.0.1
+s=Test MPEG Video session
+i=Parameters for the session streamed by "testMPEG1or2VideoStreamer"
+t=0 0
+a=tool:testMPEG1or2VideoStreamer
+a=type:broadcast
+m=video 8888 RTP/AVP 32
+c=IN IP4 239.255.42.42/127
diff --git a/testProgs/testMPEG1or2VideoReceiver.cpp b/testProgs/testMPEG1or2VideoReceiver.cpp
new file mode 100644
index 0000000..57c248f
--- /dev/null
+++ b/testProgs/testMPEG1or2VideoReceiver.cpp
@@ -0,0 +1,118 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that receives a RTP/RTCP multicast MPEG video stream,
+// and outputs the resulting MPEG file stream to 'stdout'
+// main program
+
+#include "liveMedia.hh"
+#include "GroupsockHelper.hh"
+
+#include "BasicUsageEnvironment.hh"
+
+// To receive a "source-specific multicast" (SSM) stream, uncomment this:
+//#define USE_SSM 1
+
+void afterPlaying(void* clientData); // forward
+
+// A structure to hold the state of the current session.
+// It is used in the "afterPlaying()" function to clean up the session.
+struct sessionState_t {
+  RTPSource* source;
+  MediaSink* sink;
+  RTCPInstance* rtcpInstance;
+} sessionState;
+
+UsageEnvironment* env;
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create the data sink for 'stdout':
+  sessionState.sink = FileSink::createNew(*env, "stdout");
+  // Note: The string "stdout" is handled as a special case.
+  // A real file name could have been used instead.
+
+  // Create 'groupsocks' for RTP and RTCP:
+  char const* sessionAddressStr
+#ifdef USE_SSM
+    = "232.255.42.42";
+#else
+    = "239.255.42.42";
+  // Note: If the session is unicast rather than multicast,
+  // then replace this string with "0.0.0.0"
+#endif
+  const unsigned short rtpPortNum = 8888;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+#ifndef USE_SSM
+  const unsigned char ttl = 1; // low, in case routers don't admin scope
+#endif
+
+  struct in_addr sessionAddress;
+  sessionAddress.s_addr = our_inet_addr(sessionAddressStr);
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+#ifdef USE_SSM
+  char* sourceAddressStr = "aaa.bbb.ccc.ddd";
+                           // replace this with the real source address
+  struct in_addr sourceFilterAddress;
+  sourceFilterAddress.s_addr = our_inet_addr(sourceAddressStr);
+
+  Groupsock rtpGroupsock(*env, sessionAddress, sourceFilterAddress, rtpPort);
+  Groupsock rtcpGroupsock(*env, sessionAddress, sourceFilterAddress, rtcpPort);
+  rtcpGroupsock.changeDestinationParameters(sourceFilterAddress,0,~0);
+      // our RTCP "RR"s are sent back using unicast
+#else
+  Groupsock rtpGroupsock(*env, sessionAddress, rtpPort, ttl);
+  Groupsock rtcpGroupsock(*env, sessionAddress, rtcpPort, ttl);
+#endif
+
+  // Create the data source: a "MPEG Video RTP source"
+  sessionState.source = MPEG1or2VideoRTPSource::createNew(*env, &rtpGroupsock);
+
+  // Create (and start) a 'RTCP instance' for the RTP source:
+  const unsigned estimatedSessionBandwidth = 4500; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  sessionState.rtcpInstance
+    = RTCPInstance::createNew(*env, &rtcpGroupsock,
+			      estimatedSessionBandwidth, CNAME,
+			      NULL /* we're a client */, sessionState.source);
+  // Note: This starts RTCP running automatically
+
+  // Finally, start receiving the multicast stream:
+  *env << "Beginning receiving multicast stream...\n";
+  sessionState.sink->startPlaying(*sessionState.source, afterPlaying, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done receiving\n";
+
+  // End by closing the media:
+  Medium::close(sessionState.rtcpInstance); // Note: Sends a RTCP BYE
+  Medium::close(sessionState.sink);
+  Medium::close(sessionState.source);
+}
diff --git a/testProgs/testMPEG1or2VideoStreamer.cpp b/testProgs/testMPEG1or2VideoStreamer.cpp
new file mode 100644
index 0000000..ca91541
--- /dev/null
+++ b/testProgs/testMPEG1or2VideoStreamer.cpp
@@ -0,0 +1,174 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a MPEG-1 or 2 Video Elementary Stream file,
+// and streams it using RTP
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+#include "GroupsockHelper.hh"
+
+// Uncomment the following if the input file is a MPEG Program Stream
+// rather than a MPEG Video Elementary Stream
+//#define SOURCE_IS_PROGRAM_STREAM 1
+
+// To stream using "source-specific multicast" (SSM), uncomment the following:
+//#define USE_SSM 1
+#ifdef USE_SSM
+Boolean const isSSM = True;
+#else
+Boolean const isSSM = False;
+#endif
+
+// To set up an internal RTSP server, uncomment the following:
+//#define IMPLEMENT_RTSP_SERVER 1
+// (Note that this RTSP server works for multicast only)
+
+// To stream *only* MPEG "I" frames (e.g., to reduce network bandwidth),
+// change the following "False" to "True":
+Boolean iFramesOnly = False;
+
+UsageEnvironment* env;
+char const* inputFileName = "test.mpg";
+#ifdef SOURCE_IS_PROGRAM_STREAM
+MPEG1or2Demux* mpegDemux;
+#endif
+MediaSource* videoSource;
+RTPSink* videoSink;
+
+void play(); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create 'groupsocks' for RTP and RTCP:
+  char const* destinationAddressStr
+#ifdef USE_SSM
+    = "232.255.42.42";
+#else
+    = "239.255.42.42";
+  // Note: This is a multicast address.  If you wish to stream using
+  // unicast instead, then replace this string with the unicast address
+  // of the (single) destination.  (You may also need to make a similar
+  // change to the receiver program.)
+#endif
+  const unsigned short rtpPortNum = 8888;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+  const unsigned char ttl = 7; // low, in case routers don't admin scope
+
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = our_inet_addr(destinationAddressStr);
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+  Groupsock rtpGroupsock(*env, destinationAddress, rtpPort, ttl);
+  Groupsock rtcpGroupsock(*env, destinationAddress, rtcpPort, ttl);
+#ifdef USE_SSM
+  rtpGroupsock.multicastSendOnly();
+  rtcpGroupsock.multicastSendOnly();
+#endif
+
+  // Create a 'MPEG Video RTP' sink from the RTP 'groupsock':
+  videoSink = MPEG1or2VideoRTPSink::createNew(*env, &rtpGroupsock);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidth = 4500; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+#ifdef IMPLEMENT_RTSP_SERVER
+  RTCPInstance* rtcp =
+#endif
+    RTCPInstance::createNew(*env, &rtcpGroupsock,
+			      estimatedSessionBandwidth, CNAME,
+			      videoSink, NULL /* we're a server */, isSSM);
+  // Note: This starts RTCP running automatically
+
+#ifdef IMPLEMENT_RTSP_SERVER
+  RTSPServer* rtspServer = RTSPServer::createNew(*env);
+  // Note that this (attempts to) start a server on the default RTSP server
+  // port: 554.  To use a different port number, add it as an extra
+  // (optional) parameter to the "RTSPServer::createNew()" call above.
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+		   "Session streamed by \"testMPEG1or2VideoStreamer\"",
+					   isSSM);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*videoSink, rtcp));
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+#endif
+
+  // Finally, start the streaming:
+  *env << "Beginning streaming...\n";
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done reading from file\n";
+
+  videoSink->stopPlaying();
+  Medium::close(videoSource);
+#ifdef SOURCE_IS_PROGRAM_STREAM
+  Medium::close(mpegDemux);
+#endif
+  // Note that this also closes the input file that this source read from.
+
+  play();
+}
+
+void play() {
+  // Open the input file as a 'byte-stream file source':
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (fileSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  FramedSource* videoES;
+#ifdef SOURCE_IS_PROGRAM_STREAM
+  // We must demultiplex a Video Elementary Stream from the input source:
+  mpegDemux = MPEG1or2Demux::createNew(*env, fileSource);
+  videoES = mpegDemux->newVideoStream();
+#else
+  // The input source is assumed to already be a Video Elementary Stream:
+  videoES = fileSource;
+#endif
+
+  // Create a framer for the Video Elementary Stream:
+  videoSource
+    = MPEG1or2VideoStreamFramer::createNew(*env, videoES, iFramesOnly);
+
+  // Finally, start playing:
+  *env << "Beginning to read from file...\n";
+  videoSink->startPlaying(*videoSource, afterPlaying, videoSink);
+}
diff --git a/testProgs/testMPEG2Transport.sdp b/testProgs/testMPEG2Transport.sdp
new file mode 100644
index 0000000..5d2d69f
--- /dev/null
+++ b/testProgs/testMPEG2Transport.sdp
@@ -0,0 +1,9 @@
+v=0
+o=- 49451 3 IN IP4 127.0.0.1
+s=Test MPEG-2 Transport Stream session
+i=Parameters for the session streamed by "testMPEG2TransportStreamer"
+t=0 0
+a=tool:testMPEG2TransportStreamer
+a=type:broadcast
+m=video 1234 RTP/AVP 33
+c=IN IP4 239.255.42.42/127
diff --git a/testProgs/testMPEG2TransportReceiver.cpp b/testProgs/testMPEG2TransportReceiver.cpp
new file mode 100644
index 0000000..bf7fcae
--- /dev/null
+++ b/testProgs/testMPEG2TransportReceiver.cpp
@@ -0,0 +1,118 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that receives a RTP/RTCP multicast MPEG-2 Transport Stream,
+// and outputs the resulting Transport Stream data to 'stdout'
+// main program
+
+#include "liveMedia.hh"
+#include "GroupsockHelper.hh"
+
+#include "BasicUsageEnvironment.hh"
+
+// To receive a "source-specific multicast" (SSM) stream, uncomment this:
+//#define USE_SSM 1
+
+void afterPlaying(void* clientData); // forward
+
+// A structure to hold the state of the current session.
+// It is used in the "afterPlaying()" function to clean up the session.
+struct sessionState_t {
+  RTPSource* source;
+  MediaSink* sink;
+  RTCPInstance* rtcpInstance;
+} sessionState;
+
+UsageEnvironment* env;
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create the data sink for 'stdout':
+  sessionState.sink = FileSink::createNew(*env, "stdout");
+  // Note: The string "stdout" is handled as a special case.
+  // A real file name could have been used instead.
+
+  // Create 'groupsocks' for RTP and RTCP:
+  char const* sessionAddressStr
+#ifdef USE_SSM
+    = "232.255.42.42";
+#else
+    = "239.255.42.42";
+  // Note: If the session is unicast rather than multicast,
+  // then replace this string with "0.0.0.0"
+#endif
+  const unsigned short rtpPortNum = 1234;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+#ifndef USE_SSM
+  const unsigned char ttl = 1; // low, in case routers don't admin scope
+#endif
+
+  struct in_addr sessionAddress;
+  sessionAddress.s_addr = our_inet_addr(sessionAddressStr);
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+#ifdef USE_SSM
+  char* sourceAddressStr = "aaa.bbb.ccc.ddd";
+                           // replace this with the real source address
+  struct in_addr sourceFilterAddress;
+  sourceFilterAddress.s_addr = our_inet_addr(sourceAddressStr);
+
+  Groupsock rtpGroupsock(*env, sessionAddress, sourceFilterAddress, rtpPort);
+  Groupsock rtcpGroupsock(*env, sessionAddress, sourceFilterAddress, rtcpPort);
+  rtcpGroupsock.changeDestinationParameters(sourceFilterAddress,0,~0);
+      // our RTCP "RR"s are sent back using unicast
+#else
+  Groupsock rtpGroupsock(*env, sessionAddress, rtpPort, ttl);
+  Groupsock rtcpGroupsock(*env, sessionAddress, rtcpPort, ttl);
+#endif
+
+  // Create the data source: a "MPEG-2 TransportStream RTP source" (which uses a 'simple' RTP payload format):
+  sessionState.source = SimpleRTPSource::createNew(*env, &rtpGroupsock, 33, 90000, "video/MP2T", 0, False /*no 'M' bit*/);
+
+  // Create (and start) a 'RTCP instance' for the RTP source:
+  const unsigned estimatedSessionBandwidth = 5000; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  sessionState.rtcpInstance
+    = RTCPInstance::createNew(*env, &rtcpGroupsock,
+			      estimatedSessionBandwidth, CNAME,
+			      NULL /* we're a client */, sessionState.source);
+  // Note: This starts RTCP running automatically
+
+  // Finally, start receiving the multicast stream:
+  *env << "Beginning receiving multicast stream...\n";
+  sessionState.sink->startPlaying(*sessionState.source, afterPlaying, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done receiving\n";
+
+  // End by closing the media:
+  Medium::close(sessionState.rtcpInstance); // Note: Sends a RTCP BYE
+  Medium::close(sessionState.sink);
+  Medium::close(sessionState.source);
+}
diff --git a/testProgs/testMPEG2TransportStreamSplitter.cpp b/testProgs/testMPEG2TransportStreamSplitter.cpp
new file mode 100644
index 0000000..c5f573c
--- /dev/null
+++ b/testProgs/testMPEG2TransportStreamSplitter.cpp
@@ -0,0 +1,66 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that splits a MPEG Transport Stream input (on 'stdin')
+// into separate video and audio output files.
+// main program
+
+#include <liveMedia.hh>
+#include <BasicUsageEnvironment.hh>
+
+UsageEnvironment* env;
+char const* programName;
+char const* inputFileName = "stdin";
+MPEG2TransportStreamDemux* baseDemultiplexor = NULL;
+
+void usage() {
+  *env << "usage: " << programName << " takes no arguments (it reads from \"stdin\")\n";
+  exit(1);
+}
+
+void afterReading(void*);
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Parse the command line:
+  programName = argv[0];
+  if (argc != 1) usage();
+
+  // Open the input file as a 'byte-stream file source':
+  ByteStreamFileSource* inputSource
+    = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (inputSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  // Create a demultiplexor that reads from that source, creating new 'demultiplexed tracks'
+  // as they appear:
+  baseDemultiplexor = MPEG2TransportStreamDemux::createNew(*env, inputSource, afterReading, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterReading(void* /*clientData*/) {
+  *env << "...done\n";
+  exit(0);
+}
diff --git a/testProgs/testMPEG2TransportStreamTrickPlay.cpp b/testProgs/testMPEG2TransportStreamTrickPlay.cpp
new file mode 100644
index 0000000..13fd057
--- /dev/null
+++ b/testProgs/testMPEG2TransportStreamTrickPlay.cpp
@@ -0,0 +1,129 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A program that tests 'trick mode' operations on a MPEG-2 Transport Stream file,
+// by generating a new Transport Stream file that represents the result of the
+// 'trick mode' operation (seeking and/or fast forward/reverse play).
+// For this to work, there must also be an index file present, in the same directory
+// as the Transport Stream file, and with the same name prefix.  (The Transport
+// Stream file has name suffix ".ts"; the index file has name suffix ".tsx".)
+// main program
+
+#include <liveMedia.hh>
+#include <BasicUsageEnvironment.hh>
+
+void afterPlaying(void* clientData); // forward
+
+UsageEnvironment* env;
+char const* programName;
+
+void usage() {
+  *env << "usage: " << programName << " <input-transport-stream-file-name> <start-time> <scale> <output-transport-stream-file-name>\n";
+  *env << "\twhere\t<transport-stream-file-name> ends with \".ts\"\n";
+  *env << "\t\t<start-time> is the starting play time in seconds (0 for the start)\n";
+  *env << "\t\t<scale> is a non-zero integer, representing the playing speed (use 1 for normal play; use a negative number for reverse play)\n";
+  exit(1);
+}
+
+int main(int argc, char const** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Parse the command line:
+  programName = argv[0];
+  if (argc != 5) usage();
+
+  char const* inputFileName = argv[1];
+  // Check whether the input file name ends with ".ts":
+  int len = strlen(inputFileName);
+  if (len < 4 || strcmp(&inputFileName[len-3], ".ts") != 0) {
+    *env << "ERROR: input file name \"" << inputFileName
+	 << "\" does not end with \".ts\"\n";
+    usage();
+  }
+
+  // Parse the <start-time> and <scale> parameters:
+  float startTime;
+  if (sscanf(argv[2], "%f", &startTime) != 1 || startTime < 0.0f) usage();
+
+  int scale;
+  if (sscanf(argv[3], "%d", &scale) != 1 || scale == 0) usage();
+
+  // Open the input file (as a 'byte stream file source'):
+  FramedSource* input
+    = ByteStreamFileSource::createNew(*env, inputFileName, TRANSPORT_PACKET_SIZE);
+  if (input == NULL) {
+    *env << "Failed to open input file \"" << inputFileName << "\" (does it exist?)\n";
+    exit(1);
+  }
+
+  // Check whether the corresponding index file exists.
+  // The index file name is the same as the input file name, except with suffix ".tsx":
+  char* indexFileName = new char[len+2]; // allow for trailing x\0
+  sprintf(indexFileName, "%sx", inputFileName);
+  MPEG2TransportStreamIndexFile* indexFile
+    = MPEG2TransportStreamIndexFile::createNew(*env, indexFileName);
+  if (indexFile == NULL) {
+    *env << "Failed to open index file \"" << indexFileName << "\" (does it exist?)\n";
+    exit(1);
+  }
+
+  // Create a filter that generates trick mode data from the input and index files:
+  MPEG2TransportStreamTrickModeFilter* trickModeFilter
+    = MPEG2TransportStreamTrickModeFilter::createNew(*env, input, indexFile, scale);
+
+  if (startTime > 0.0f) {
+    // Seek the input Transport Stream and Index files to the specified start time:
+    unsigned long tsRecordNumber, indexRecordNumber;
+    indexFile->lookupTSPacketNumFromNPT(startTime, tsRecordNumber, indexRecordNumber);
+    if (!trickModeFilter->seekTo(tsRecordNumber, indexRecordNumber)) { // TARFU!
+      *env << "Failed to seek trick mode filter to ts #" << (unsigned)tsRecordNumber
+	   << ", ix #" << (unsigned)indexRecordNumber
+	   << "(for time " << startTime << ")\n";
+      exit(1);
+    }
+  }
+
+  // Generate a new Transport Stream from the Trick Mode filter:
+  MPEG2TransportStreamFromESSource* newTransportStream
+    = MPEG2TransportStreamFromESSource::createNew(*env);
+  newTransportStream->addNewVideoSource(trickModeFilter, indexFile->mpegVersion());
+
+  // Open the output file (for writing), as a 'file sink':
+  char const* outputFileName = argv[4];
+  MediaSink* output = FileSink::createNew(*env, outputFileName);
+  if (output == NULL) {
+    *env << "Failed to open output file \"" << outputFileName << "\"\n";
+    exit(1);
+  }
+
+  // Start playing, to generate the output file:
+  *env << "Writing output file \"" << outputFileName
+       << "\" (start time " << startTime
+       << ", scale " << scale
+       << ")...";
+  output->startPlaying(*newTransportStream, afterPlaying, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done\n";
+  exit(0);
+}
diff --git a/testProgs/testMPEG2TransportStreamer.cpp b/testProgs/testMPEG2TransportStreamer.cpp
new file mode 100644
index 0000000..fd4f096
--- /dev/null
+++ b/testProgs/testMPEG2TransportStreamer.cpp
@@ -0,0 +1,158 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a MPEG-2 Transport Stream file,
+// and streams it using RTP
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+#include "GroupsockHelper.hh"
+
+// To stream using "source-specific multicast" (SSM), uncomment the following:
+//#define USE_SSM 1
+#ifdef USE_SSM
+Boolean const isSSM = True;
+#else
+Boolean const isSSM = False;
+#endif
+
+// To set up an internal RTSP server, uncomment the following:
+//#define IMPLEMENT_RTSP_SERVER 1
+// (Note that this RTSP server works for multicast only)
+
+#define TRANSPORT_PACKET_SIZE 188
+#define TRANSPORT_PACKETS_PER_NETWORK_PACKET 7
+// The product of these two numbers must be enough to fit within a network packet
+
+UsageEnvironment* env;
+char const* inputFileName = "test.ts";
+FramedSource* videoSource;
+RTPSink* videoSink;
+
+void play(); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create 'groupsocks' for RTP and RTCP:
+  char const* destinationAddressStr
+#ifdef USE_SSM
+    = "232.255.42.42";
+#else
+  = "239.255.42.42";
+  // Note: This is a multicast address.  If you wish to stream using
+  // unicast instead, then replace this string with the unicast address
+  // of the (single) destination.  (You may also need to make a similar
+  // change to the receiver program.)
+#endif
+  const unsigned short rtpPortNum = 1234;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+  const unsigned char ttl = 7; // low, in case routers don't admin scope
+
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = our_inet_addr(destinationAddressStr);
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+  Groupsock rtpGroupsock(*env, destinationAddress, rtpPort, ttl);
+  Groupsock rtcpGroupsock(*env, destinationAddress, rtcpPort, ttl);
+#ifdef USE_SSM
+  rtpGroupsock.multicastSendOnly();
+  rtcpGroupsock.multicastSendOnly();
+#endif
+
+  // Create an appropriate 'RTP sink' from the RTP 'groupsock':
+  videoSink =
+    SimpleRTPSink::createNew(*env, &rtpGroupsock, 33, 90000, "video", "MP2T",
+			     1, True, False /*no 'M' bit*/);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidth = 5000; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+#ifdef IMPLEMENT_RTSP_SERVER
+  RTCPInstance* rtcp =
+#endif
+    RTCPInstance::createNew(*env, &rtcpGroupsock,
+			    estimatedSessionBandwidth, CNAME,
+			    videoSink, NULL /* we're a server */, isSSM);
+  // Note: This starts RTCP running automatically
+
+#ifdef IMPLEMENT_RTSP_SERVER
+  RTSPServer* rtspServer = RTSPServer::createNew(*env);
+  // Note that this (attempts to) start a server on the default RTSP server
+  // port: 554.  To use a different port number, add it as an extra
+  // (optional) parameter to the "RTSPServer::createNew()" call above.
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+		   "Session streamed by \"testMPEG2TransportStreamer\"",
+					   isSSM);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*videoSink, rtcp));
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+#endif
+
+  // Finally, start the streaming:
+  *env << "Beginning streaming...\n";
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done reading from file\n";
+
+  videoSink->stopPlaying();
+  Medium::close(videoSource);
+  // Note that this also closes the input file that this source read from.
+
+  play();
+}
+
+void play() {
+  unsigned const inputDataChunkSize
+    = TRANSPORT_PACKETS_PER_NETWORK_PACKET*TRANSPORT_PACKET_SIZE;
+
+  // Open the input file as a 'byte-stream file source':
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(*env, inputFileName, inputDataChunkSize);
+  if (fileSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  // Create a 'framer' for the input source (to give us proper inter-packet gaps):
+  videoSource = MPEG2TransportStreamFramer::createNew(*env, fileSource);
+
+  // Finally, start playing:
+  *env << "Beginning to read from file...\n";
+  videoSink->startPlaying(*videoSource, afterPlaying, videoSink);
+}
diff --git a/testProgs/testMPEG4VideoStreamer.cpp b/testProgs/testMPEG4VideoStreamer.cpp
new file mode 100644
index 0000000..d1b5b34
--- /dev/null
+++ b/testProgs/testMPEG4VideoStreamer.cpp
@@ -0,0 +1,126 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a MPEG-4 Video Elementary Stream file,
+// and streams it using RTP
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+#include "GroupsockHelper.hh"
+
+UsageEnvironment* env;
+char const* inputFileName = "test.m4e";
+MPEG4VideoStreamFramer* videoSource;
+RTPSink* videoSink;
+
+void play(); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create 'groupsocks' for RTP and RTCP:
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);
+  // Note: This is a multicast address.  If you wish instead to stream
+  // using unicast, then you should use the "testOnDemandRTSPServer"
+  // test program - not this test program - as a model.
+
+  const unsigned short rtpPortNum = 18888;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+  const unsigned char ttl = 255;
+
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+  Groupsock rtpGroupsock(*env, destinationAddress, rtpPort, ttl);
+  rtpGroupsock.multicastSendOnly(); // we're a SSM source
+  Groupsock rtcpGroupsock(*env, destinationAddress, rtcpPort, ttl);
+  rtcpGroupsock.multicastSendOnly(); // we're a SSM source
+
+  // Create a 'MPEG-4 Video RTP' sink from the RTP 'groupsock':
+  videoSink = MPEG4ESVideoRTPSink::createNew(*env, &rtpGroupsock, 96);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidth = 500; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  RTCPInstance* rtcp
+  = RTCPInstance::createNew(*env, &rtcpGroupsock,
+			    estimatedSessionBandwidth, CNAME,
+			    videoSink, NULL /* we're a server */,
+			    True /* we're a SSM source */);
+  // Note: This starts RTCP running automatically
+
+  RTSPServer* rtspServer = RTSPServer::createNew(*env, 8554);
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+		   "Session streamed by \"testMPEG4VideoStreamer\"",
+					   True /*SSM*/);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*videoSink, rtcp));
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+
+  // Start the streaming:
+  *env << "Beginning streaming...\n";
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done reading from file\n";
+
+  videoSink->stopPlaying();
+  Medium::close(videoSource);
+  // Note that this also closes the input file that this source read from.
+
+  // Start playing once again:
+  play();
+}
+
+void play() {
+  // Open the input file as a 'byte-stream file source':
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(*env, inputFileName);
+  if (fileSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a byte-stream file source\n";
+    exit(1);
+  }
+
+  FramedSource* videoES = fileSource;
+
+  // Create a framer for the Video Elementary Stream:
+  videoSource = MPEG4VideoStreamFramer::createNew(*env, videoES);
+
+  // Finally, start playing:
+  *env << "Beginning to read from file...\n";
+  videoSink->startPlaying(*videoSource, afterPlaying, videoSink);
+}
diff --git a/testProgs/testOggStreamer.cpp b/testProgs/testOggStreamer.cpp
new file mode 100644
index 0000000..7c92652
--- /dev/null
+++ b/testProgs/testOggStreamer.cpp
@@ -0,0 +1,182 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a ".ogg" (i.e., Ogg) file, demultiplexes each track
+// (audio and/or video), and streams each track using RTP multicast.
+// main program
+
+#include <liveMedia.hh>
+#include <BasicUsageEnvironment.hh>
+#include <GroupsockHelper.hh>
+
+UsageEnvironment* env;
+char const* inputFileName = "test.ogg";
+struct in_addr destinationAddress;
+RTSPServer* rtspServer;
+ServerMediaSession* sms;
+OggFile* oggFile;
+OggDemux* oggDemux;
+unsigned numTracks;
+
+// A structure representing the state of a track:
+struct TrackState {
+  u_int32_t trackNumber;
+  FramedSource* source;
+  RTPSink* sink;
+  RTCPInstance* rtcp;
+};
+TrackState* trackState;
+
+void onOggFileCreation(OggFile* newFile, void* clientData); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Define our destination (multicast) IP address:
+  destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);
+    // Note: This is a multicast address.  If you wish instead to stream
+    // using unicast, then you should use the "testOnDemandRTSPServer"
+    // test program - not this test program - as a model.
+
+  // Create our RTSP server.  (Receivers will need to use RTSP to access the stream.)
+  rtspServer = RTSPServer::createNew(*env, 8554);
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  sms = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+                                      "Session streamed by \"testMKVStreamer\"",
+                                      True /*SSM*/);
+
+  // Arrange to create an "OggFile" object for the specified file.
+  // (Note that this object is not created immediately, but instead via a callback.)
+  OggFile::createNew(*env, inputFileName, onOggFileCreation, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void play(); // forward
+
+void onOggFileCreation(OggFile* newFile, void* clientData) {
+  oggFile = newFile;
+
+  // Create a new demultiplexor for the file:
+  oggDemux = oggFile->newDemux();
+
+  // Create source streams, "RTPSink"s, and "RTCPInstance"s for each preferred track;
+  unsigned short rtpPortNum = 22222;
+  const unsigned char ttl = 255;
+
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+
+  numTracks = oggFile->numTracks();
+  trackState = new TrackState[numTracks];
+  for (unsigned i = 0; i < numTracks; ++i) {
+    u_int32_t trackNumber;
+    FramedSource* baseSource = oggDemux->newDemuxedTrack(trackNumber);
+    trackState[i].trackNumber = trackNumber;
+
+    unsigned estBitrate, numFiltersInFrontOfTrack;
+    trackState[i].source = oggFile
+      ->createSourceForStreaming(baseSource, trackNumber, estBitrate, numFiltersInFrontOfTrack);
+    trackState[i].sink = NULL; // by default; may get changed below
+    trackState[i].rtcp = NULL; // ditto
+
+    if (trackState[i].source != NULL) {
+      Groupsock* rtpGroupsock = new Groupsock(*env, destinationAddress, rtpPortNum, ttl);
+      Groupsock* rtcpGroupsock = new Groupsock(*env, destinationAddress, rtpPortNum+1, ttl);
+      rtpPortNum += 2;
+
+      trackState[i].sink
+        = oggFile->createRTPSinkForTrackNumber(trackNumber, rtpGroupsock, 96+i);
+      if (trackState[i].sink != NULL) {
+        if (trackState[i].sink->estimatedBitrate() > 0) {
+          estBitrate = trackState[i].sink->estimatedBitrate(); // hack
+        }
+	trackState[i].rtcp
+	  = RTCPInstance::createNew(*env, rtcpGroupsock, estBitrate, CNAME,
+				    trackState[i].sink, NULL /* we're a server */,
+				    True /* we're a SSM source */);
+	  // Note: This starts RTCP running automatically
+
+	// Having set up a track for streaming, add it to our RTSP server's "ServerMediaSession":
+	sms->addSubsession(PassiveServerMediaSubsession::createNew(*trackState[i].sink, trackState[i].rtcp));
+      }
+    }
+  }
+
+  if (sms->numSubsessions() == 0) {
+    *env << "Error: The Ogg file \"" << inputFileName << "\" has no streamable tracks\n";
+    *env << "(Perhaps the file does not exist, is not an 'Ogg' file, or has no tracks that we know how to stream.)\n";
+    exit(1);
+  }
+
+  rtspServer->addServerMediaSession(sms);
+
+  char* url = rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+
+  // Start the streaming:
+  play();
+}
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done reading from file\n";
+
+  // Stop playing all "RTPSink"s, then close the source streams
+  // (which will also close the demultiplexor itself):
+  unsigned i;
+  for (i = 0; i < numTracks; ++i) {
+    if (trackState[i].sink != NULL) trackState[i].sink->stopPlaying();
+    Medium::close(trackState[i].source); trackState[i].source = NULL;
+  }
+
+  // Create a new demultiplexor from our Ogg file, then new data sources for each track:
+  oggDemux = oggFile->newDemux();
+  for (i = 0; i < numTracks; ++i) {
+    if (trackState[i].trackNumber != 0) {
+      FramedSource* baseSource
+	= oggDemux->newDemuxedTrack(trackState[i].trackNumber);
+
+      unsigned estBitrate, numFiltersInFrontOfTrack;
+      trackState[i].source
+	= oggFile->createSourceForStreaming(baseSource, trackState[i].trackNumber,
+					    estBitrate, numFiltersInFrontOfTrack);
+    }
+  }
+
+  // Start playing once again:
+  play();
+}
+
+void play() {
+  *env << "Beginning to read from file...\n";
+
+  // Start playing each track's RTP sink from its corresponding source:
+  for (unsigned i = 0; i < numTracks; ++i) {
+    if (trackState[i].sink != NULL && trackState[i].source != NULL) {
+      trackState[i].sink->startPlaying(*trackState[i].source, afterPlaying, NULL);
+    }
+  }
+}
diff --git a/testProgs/testOnDemandRTSPServer.cpp b/testProgs/testOnDemandRTSPServer.cpp
new file mode 100644
index 0000000..a6fd023
--- /dev/null
+++ b/testProgs/testOnDemandRTSPServer.cpp
@@ -0,0 +1,455 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that demonstrates how to stream - via unicast RTP
+// - various kinds of file on demand, using a built-in RTSP server.
+// main program
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+
+UsageEnvironment* env;
+
+// To make the second and subsequent client for each stream reuse the same
+// input stream as the first client (rather than playing the file from the
+// start for each client), change the following "False" to "True":
+Boolean reuseFirstSource = False;
+
+// To stream *only* MPEG-1 or 2 video "I" frames
+// (e.g., to reduce network bandwidth),
+// change the following "False" to "True":
+Boolean iFramesOnly = False;
+
+static void announceStream(RTSPServer* rtspServer, ServerMediaSession* sms,
+			   char const* streamName, char const* inputFileName); // fwd
+
+static char newDemuxWatchVariable;
+
+static MatroskaFileServerDemux* matroskaDemux;
+static void onMatroskaDemuxCreation(MatroskaFileServerDemux* newDemux, void* /*clientData*/) {
+  matroskaDemux = newDemux;
+  newDemuxWatchVariable = 1;
+}
+
+static OggFileServerDemux* oggDemux;
+static void onOggDemuxCreation(OggFileServerDemux* newDemux, void* /*clientData*/) {
+  oggDemux = newDemux;
+  newDemuxWatchVariable = 1;
+}
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  UserAuthenticationDatabase* authDB = NULL;
+#ifdef ACCESS_CONTROL
+  // To implement client access control to the RTSP server, do the following:
+  authDB = new UserAuthenticationDatabase;
+  authDB->addUserRecord("username1", "password1"); // replace these with real strings
+  // Repeat the above with each <username>, <password> that you wish to allow
+  // access to the server.
+#endif
+
+  // Create the RTSP server:
+  RTSPServer* rtspServer = RTSPServer::createNew(*env, 8554, authDB);
+  if (rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+
+  char const* descriptionString
+    = "Session streamed by \"testOnDemandRTSPServer\"";
+
+  // Set up each of the possible streams that can be served by the
+  // RTSP server.  Each such stream is implemented using a
+  // "ServerMediaSession" object, plus one or more
+  // "ServerMediaSubsession" objects for each audio/video substream.
+
+  // A MPEG-4 video elementary stream:
+  {
+    char const* streamName = "mpeg4ESVideoTest";
+    char const* inputFileName = "test.m4e";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    sms->addSubsession(MPEG4VideoFileServerMediaSubsession
+		       ::createNew(*env, inputFileName, reuseFirstSource));
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A H.264 video elementary stream:
+  {
+    char const* streamName = "h264ESVideoTest";
+    char const* inputFileName = "test.264";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    sms->addSubsession(H264VideoFileServerMediaSubsession
+		       ::createNew(*env, inputFileName, reuseFirstSource));
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A H.265 video elementary stream:
+  {
+    char const* streamName = "h265ESVideoTest";
+    char const* inputFileName = "test.265";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    sms->addSubsession(H265VideoFileServerMediaSubsession
+		       ::createNew(*env, inputFileName, reuseFirstSource));
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A MPEG-1 or 2 audio+video program stream:
+  {
+    char const* streamName = "mpeg1or2AudioVideoTest";
+    char const* inputFileName = "test.mpg";
+    // NOTE: This *must* be a Program Stream; not an Elementary Stream
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    MPEG1or2FileServerDemux* demux
+      = MPEG1or2FileServerDemux::createNew(*env, inputFileName, reuseFirstSource);
+    sms->addSubsession(demux->newVideoServerMediaSubsession(iFramesOnly));
+    sms->addSubsession(demux->newAudioServerMediaSubsession());
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A MPEG-1 or 2 video elementary stream:
+  {
+    char const* streamName = "mpeg1or2ESVideoTest";
+    char const* inputFileName = "testv.mpg";
+    // NOTE: This *must* be a Video Elementary Stream; not a Program Stream
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    sms->addSubsession(MPEG1or2VideoFileServerMediaSubsession
+	       ::createNew(*env, inputFileName, reuseFirstSource, iFramesOnly));
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A MP3 audio stream (actually, any MPEG-1 or 2 audio file will work):
+  // To stream using 'ADUs' rather than raw MP3 frames, uncomment the following:
+//#define STREAM_USING_ADUS 1
+  // To also reorder ADUs before streaming, uncomment the following:
+//#define INTERLEAVE_ADUS 1
+  // (For more information about ADUs and interleaving,
+  //  see <http://www.live555.com/rtp-mp3/>)
+  {
+    char const* streamName = "mp3AudioTest";
+    char const* inputFileName = "test.mp3";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    Boolean useADUs = False;
+    Interleaving* interleaving = NULL;
+#ifdef STREAM_USING_ADUS
+    useADUs = True;
+#ifdef INTERLEAVE_ADUS
+    unsigned char interleaveCycle[] = {0,2,1,3}; // or choose your own...
+    unsigned const interleaveCycleSize
+      = (sizeof interleaveCycle)/(sizeof (unsigned char));
+    interleaving = new Interleaving(interleaveCycleSize, interleaveCycle);
+#endif
+#endif
+    sms->addSubsession(MP3AudioFileServerMediaSubsession
+		       ::createNew(*env, inputFileName, reuseFirstSource,
+				   useADUs, interleaving));
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A WAV audio stream:
+  {
+    char const* streamName = "wavAudioTest";
+    char const* inputFileName = "test.wav";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    // To convert 16-bit PCM data to 8-bit u-law, prior to streaming,
+    // change the following to True:
+    Boolean convertToULaw = False;
+    sms->addSubsession(WAVAudioFileServerMediaSubsession
+	       ::createNew(*env, inputFileName, reuseFirstSource, convertToULaw));
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // An AMR audio stream:
+  {
+    char const* streamName = "amrAudioTest";
+    char const* inputFileName = "test.amr";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    sms->addSubsession(AMRAudioFileServerMediaSubsession
+		       ::createNew(*env, inputFileName, reuseFirstSource));
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A 'VOB' file (e.g., from an unencrypted DVD):
+  {
+    char const* streamName = "vobTest";
+    char const* inputFileName = "test.vob";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    // Note: VOB files are MPEG-2 Program Stream files, but using AC-3 audio
+    MPEG1or2FileServerDemux* demux
+      = MPEG1or2FileServerDemux::createNew(*env, inputFileName, reuseFirstSource);
+    sms->addSubsession(demux->newVideoServerMediaSubsession(iFramesOnly));
+    sms->addSubsession(demux->newAC3AudioServerMediaSubsession());
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A MPEG-2 Transport Stream:
+  {
+    char const* streamName = "mpeg2TransportStreamTest";
+    char const* inputFileName = "test.ts";
+    char const* indexFileName = "test.tsx";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    sms->addSubsession(MPEG2TransportFileServerMediaSubsession
+		       ::createNew(*env, inputFileName, indexFileName, reuseFirstSource));
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // An AAC audio stream (ADTS-format file):
+  {
+    char const* streamName = "aacAudioTest";
+    char const* inputFileName = "test.aac";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    sms->addSubsession(ADTSAudioFileServerMediaSubsession
+		       ::createNew(*env, inputFileName, reuseFirstSource));
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A DV video stream:
+  {
+    // First, make sure that the RTPSinks' buffers will be large enough to handle the huge size of DV frames (as big as 288000).
+    OutPacketBuffer::maxSize = 300000;
+
+    char const* streamName = "dvVideoTest";
+    char const* inputFileName = "test.dv";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    sms->addSubsession(DVVideoFileServerMediaSubsession
+		       ::createNew(*env, inputFileName, reuseFirstSource));
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A AC3 video elementary stream:
+  {
+    char const* streamName = "ac3AudioTest";
+    char const* inputFileName = "test.ac3";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+
+    sms->addSubsession(AC3AudioFileServerMediaSubsession
+		       ::createNew(*env, inputFileName, reuseFirstSource));
+
+    rtspServer->addServerMediaSession(sms);
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A Matroska ('.mkv') file, with video+audio+subtitle streams:
+  {
+    char const* streamName = "matroskaFileTest";
+    char const* inputFileName = "test.mkv";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+
+    newDemuxWatchVariable = 0;
+    MatroskaFileServerDemux::createNew(*env, inputFileName, onMatroskaDemuxCreation, NULL);
+    env->taskScheduler().doEventLoop(&newDemuxWatchVariable);
+
+    Boolean sessionHasTracks = False;
+    ServerMediaSubsession* smss;
+    while ((smss = matroskaDemux->newServerMediaSubsession()) != NULL) {
+      sms->addSubsession(smss);
+      sessionHasTracks = True;
+    }
+    if (sessionHasTracks) {
+      rtspServer->addServerMediaSession(sms);
+    }
+    // otherwise, because the stream has no tracks, we don't add a ServerMediaSession to the server.
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A WebM ('.webm') file, with video(VP8)+audio(Vorbis) streams:
+  // (Note: ".webm' files are special types of Matroska files, so we use the same code as the Matroska ('.mkv') file code above.)
+  {
+    char const* streamName = "webmFileTest";
+    char const* inputFileName = "test.webm";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+
+    newDemuxWatchVariable = 0;
+    MatroskaFileServerDemux::createNew(*env, inputFileName, onMatroskaDemuxCreation, NULL);
+    env->taskScheduler().doEventLoop(&newDemuxWatchVariable);
+
+    Boolean sessionHasTracks = False;
+    ServerMediaSubsession* smss;
+    while ((smss = matroskaDemux->newServerMediaSubsession()) != NULL) {
+      sms->addSubsession(smss);
+      sessionHasTracks = True;
+    }
+    if (sessionHasTracks) {
+      rtspServer->addServerMediaSession(sms);
+    }
+    // otherwise, because the stream has no tracks, we don't add a ServerMediaSession to the server.
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // An Ogg ('.ogg') file, with video and/or audio streams:
+  {
+    char const* streamName = "oggFileTest";
+    char const* inputFileName = "test.ogg";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+
+    newDemuxWatchVariable = 0;
+    OggFileServerDemux::createNew(*env, inputFileName, onOggDemuxCreation, NULL);
+    env->taskScheduler().doEventLoop(&newDemuxWatchVariable);
+
+    Boolean sessionHasTracks = False;
+    ServerMediaSubsession* smss;
+    while ((smss = oggDemux->newServerMediaSubsession()) != NULL) {
+      sms->addSubsession(smss);
+      sessionHasTracks = True;
+    }
+    if (sessionHasTracks) {
+      rtspServer->addServerMediaSession(sms);
+    }
+    // otherwise, because the stream has no tracks, we don't add a ServerMediaSession to the server.
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // An Opus ('.opus') audio file:
+  // (Note: ".opus' files are special types of Ogg files, so we use the same code as the Ogg ('.ogg') file code above.)
+  {
+    char const* streamName = "opusFileTest";
+    char const* inputFileName = "test.opus";
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+
+    newDemuxWatchVariable = 0;
+    OggFileServerDemux::createNew(*env, inputFileName, onOggDemuxCreation, NULL);
+    env->taskScheduler().doEventLoop(&newDemuxWatchVariable);
+
+    Boolean sessionHasTracks = False;
+    ServerMediaSubsession* smss;
+    while ((smss = oggDemux->newServerMediaSubsession()) != NULL) {
+      sms->addSubsession(smss);
+      sessionHasTracks = True;
+    }
+    if (sessionHasTracks) {
+      rtspServer->addServerMediaSession(sms);
+    }
+    // otherwise, because the stream has no tracks, we don't add a ServerMediaSession to the server.
+
+    announceStream(rtspServer, sms, streamName, inputFileName);
+  }
+
+  // A MPEG-2 Transport Stream, coming from a live UDP (raw-UDP or RTP/UDP) source:
+  {
+    char const* streamName = "mpeg2TransportStreamFromUDPSourceTest";
+    char const* inputAddressStr = "239.255.42.42";
+        // This causes the server to take its input from the stream sent by the "testMPEG2TransportStreamer" demo application.
+        // (Note: If the input UDP source is unicast rather than multicast, then change this to NULL.)
+    portNumBits const inputPortNum = 1234;
+        // This causes the server to take its input from the stream sent by the "testMPEG2TransportStreamer" demo application.
+    Boolean const inputStreamIsRawUDP = False; 
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, streamName, streamName,
+				      descriptionString);
+    sms->addSubsession(MPEG2TransportUDPServerMediaSubsession
+		       ::createNew(*env, inputAddressStr, inputPortNum, inputStreamIsRawUDP));
+    rtspServer->addServerMediaSession(sms);
+
+    char* url = rtspServer->rtspURL(sms);
+    *env << "\n\"" << streamName << "\" stream, from a UDP Transport Stream input source \n\t(";
+    if (inputAddressStr != NULL) {
+      *env << "IP multicast address " << inputAddressStr << ",";
+    } else {
+      *env << "unicast;";
+    }
+    *env << " port " << inputPortNum << ")\n";
+    *env << "Play this stream using the URL \"" << url << "\"\n";
+    delete[] url;
+  }
+
+  // Also, attempt to create a HTTP server for RTSP-over-HTTP tunneling.
+  // Try first with the default HTTP port (80), and then with the alternative HTTP
+  // port numbers (8000 and 8080).
+
+  if (rtspServer->setUpTunnelingOverHTTP(80) || rtspServer->setUpTunnelingOverHTTP(8000) || rtspServer->setUpTunnelingOverHTTP(8080)) {
+    *env << "\n(We use port " << rtspServer->httpServerPortNum() << " for optional RTSP-over-HTTP tunneling.)\n";
+  } else {
+    *env << "\n(RTSP-over-HTTP tunneling is not available.)\n";
+  }
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+static void announceStream(RTSPServer* rtspServer, ServerMediaSession* sms,
+			   char const* streamName, char const* inputFileName) {
+  char* url = rtspServer->rtspURL(sms);
+  UsageEnvironment& env = rtspServer->envir();
+  env << "\n\"" << streamName << "\" stream, from the file \""
+      << inputFileName << "\"\n";
+  env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+}
diff --git a/testProgs/testRTSPClient.cpp b/testProgs/testRTSPClient.cpp
new file mode 100644
index 0000000..72e6f81
--- /dev/null
+++ b/testProgs/testRTSPClient.cpp
@@ -0,0 +1,537 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A demo application, showing how to create and run a RTSP client (that can potentially receive multiple streams concurrently).
+//
+// NOTE: This code - although it builds a running application - is intended only to illustrate how to develop your own RTSP
+// client application.  For a full-featured RTSP client application - with much more functionality, and many options - see
+// "openRTSP": http://www.live555.com/openRTSP/
+
+#include "liveMedia.hh"
+#include "BasicUsageEnvironment.hh"
+
+// Forward function definitions:
+
+// RTSP 'response handlers':
+void continueAfterDESCRIBE(RTSPClient* rtspClient, int resultCode, char* resultString);
+void continueAfterSETUP(RTSPClient* rtspClient, int resultCode, char* resultString);
+void continueAfterPLAY(RTSPClient* rtspClient, int resultCode, char* resultString);
+
+// Other event handler functions:
+void subsessionAfterPlaying(void* clientData); // called when a stream's subsession (e.g., audio or video substream) ends
+void subsessionByeHandler(void* clientData, char const* reason);
+  // called when a RTCP "BYE" is received for a subsession
+void streamTimerHandler(void* clientData);
+  // called at the end of a stream's expected duration (if the stream has not already signaled its end using a RTCP "BYE")
+
+// The main streaming routine (for each "rtsp://" URL):
+void openURL(UsageEnvironment& env, char const* progName, char const* rtspURL);
+
+// Used to iterate through each stream's 'subsessions', setting up each one:
+void setupNextSubsession(RTSPClient* rtspClient);
+
+// Used to shut down and close a stream (including its "RTSPClient" object):
+void shutdownStream(RTSPClient* rtspClient, int exitCode = 1);
+
+// A function that outputs a string that identifies each stream (for debugging output).  Modify this if you wish:
+UsageEnvironment& operator<<(UsageEnvironment& env, const RTSPClient& rtspClient) {
+  return env << "[URL:\"" << rtspClient.url() << "\"]: ";
+}
+
+// A function that outputs a string that identifies each subsession (for debugging output).  Modify this if you wish:
+UsageEnvironment& operator<<(UsageEnvironment& env, const MediaSubsession& subsession) {
+  return env << subsession.mediumName() << "/" << subsession.codecName();
+}
+
+void usage(UsageEnvironment& env, char const* progName) {
+  env << "Usage: " << progName << " <rtsp-url-1> ... <rtsp-url-N>\n";
+  env << "\t(where each <rtsp-url-i> is a \"rtsp://\" URL)\n";
+}
+
+char eventLoopWatchVariable = 0;
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  UsageEnvironment* env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // We need at least one "rtsp://" URL argument:
+  if (argc < 2) {
+    usage(*env, argv[0]);
+    return 1;
+  }
+
+  // There are argc-1 URLs: argv[1] through argv[argc-1].  Open and start streaming each one:
+  for (int i = 1; i <= argc-1; ++i) {
+    openURL(*env, argv[0], argv[i]);
+  }
+
+  // All subsequent activity takes place within the event loop:
+  env->taskScheduler().doEventLoop(&eventLoopWatchVariable);
+    // This function call does not return, unless, at some point in time, "eventLoopWatchVariable" gets set to something non-zero.
+
+  return 0;
+
+  // If you choose to continue the application past this point (i.e., if you comment out the "return 0;" statement above),
+  // and if you don't intend to do anything more with the "TaskScheduler" and "UsageEnvironment" objects,
+  // then you can also reclaim the (small) memory used by these objects by uncommenting the following code:
+  /*
+    env->reclaim(); env = NULL;
+    delete scheduler; scheduler = NULL;
+  */
+}
+
+// Define a class to hold per-stream state that we maintain throughout each stream's lifetime:
+
+class StreamClientState {
+public:
+  StreamClientState();
+  virtual ~StreamClientState();
+
+public:
+  MediaSubsessionIterator* iter;
+  MediaSession* session;
+  MediaSubsession* subsession;
+  TaskToken streamTimerTask;
+  double duration;
+};
+
+// If you're streaming just a single stream (i.e., just from a single URL, once), then you can define and use just a single
+// "StreamClientState" structure, as a global variable in your application.  However, because - in this demo application - we're
+// showing how to play multiple streams, concurrently, we can't do that.  Instead, we have to have a separate "StreamClientState"
+// structure for each "RTSPClient".  To do this, we subclass "RTSPClient", and add a "StreamClientState" field to the subclass:
+
+class ourRTSPClient: public RTSPClient {
+public:
+  static ourRTSPClient* createNew(UsageEnvironment& env, char const* rtspURL,
+				  int verbosityLevel = 0,
+				  char const* applicationName = NULL,
+				  portNumBits tunnelOverHTTPPortNum = 0);
+
+protected:
+  ourRTSPClient(UsageEnvironment& env, char const* rtspURL,
+		int verbosityLevel, char const* applicationName, portNumBits tunnelOverHTTPPortNum);
+    // called only by createNew();
+  virtual ~ourRTSPClient();
+
+public:
+  StreamClientState scs;
+};
+
+// Define a data sink (a subclass of "MediaSink") to receive the data for each subsession (i.e., each audio or video 'substream').
+// In practice, this might be a class (or a chain of classes) that decodes and then renders the incoming audio or video.
+// Or it might be a "FileSink", for outputting the received data into a file (as is done by the "openRTSP" application).
+// In this example code, however, we define a simple 'dummy' sink that receives incoming data, but does nothing with it.
+
+class DummySink: public MediaSink {
+public:
+  static DummySink* createNew(UsageEnvironment& env,
+			      MediaSubsession& subsession, // identifies the kind of data that's being received
+			      char const* streamId = NULL); // identifies the stream itself (optional)
+
+private:
+  DummySink(UsageEnvironment& env, MediaSubsession& subsession, char const* streamId);
+    // called only by "createNew()"
+  virtual ~DummySink();
+
+  static void afterGettingFrame(void* clientData, unsigned frameSize,
+                                unsigned numTruncatedBytes,
+				struct timeval presentationTime,
+                                unsigned durationInMicroseconds);
+  void afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes,
+			 struct timeval presentationTime, unsigned durationInMicroseconds);
+
+private:
+  // redefined virtual functions:
+  virtual Boolean continuePlaying();
+
+private:
+  u_int8_t* fReceiveBuffer;
+  MediaSubsession& fSubsession;
+  char* fStreamId;
+};
+
+#define RTSP_CLIENT_VERBOSITY_LEVEL 1 // by default, print verbose output from each "RTSPClient"
+
+static unsigned rtspClientCount = 0; // Counts how many streams (i.e., "RTSPClient"s) are currently in use.
+
+void openURL(UsageEnvironment& env, char const* progName, char const* rtspURL) {
+  // Begin by creating a "RTSPClient" object.  Note that there is a separate "RTSPClient" object for each stream that we wish
+  // to receive (even if more than stream uses the same "rtsp://" URL).
+  RTSPClient* rtspClient = ourRTSPClient::createNew(env, rtspURL, RTSP_CLIENT_VERBOSITY_LEVEL, progName);
+  if (rtspClient == NULL) {
+    env << "Failed to create a RTSP client for URL \"" << rtspURL << "\": " << env.getResultMsg() << "\n";
+    return;
+  }
+
+  ++rtspClientCount;
+
+  // Next, send a RTSP "DESCRIBE" command, to get a SDP description for the stream.
+  // Note that this command - like all RTSP commands - is sent asynchronously; we do not block, waiting for a response.
+  // Instead, the following function call returns immediately, and we handle the RTSP response later, from within the event loop:
+  rtspClient->sendDescribeCommand(continueAfterDESCRIBE); 
+}
+
+
+// Implementation of the RTSP 'response handlers':
+
+void continueAfterDESCRIBE(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  do {
+    UsageEnvironment& env = rtspClient->envir(); // alias
+    StreamClientState& scs = ((ourRTSPClient*)rtspClient)->scs; // alias
+
+    if (resultCode != 0) {
+      env << *rtspClient << "Failed to get a SDP description: " << resultString << "\n";
+      delete[] resultString;
+      break;
+    }
+
+    char* const sdpDescription = resultString;
+    env << *rtspClient << "Got a SDP description:\n" << sdpDescription << "\n";
+
+    // Create a media session object from this SDP description:
+    scs.session = MediaSession::createNew(env, sdpDescription);
+    delete[] sdpDescription; // because we don't need it anymore
+    if (scs.session == NULL) {
+      env << *rtspClient << "Failed to create a MediaSession object from the SDP description: " << env.getResultMsg() << "\n";
+      break;
+    } else if (!scs.session->hasSubsessions()) {
+      env << *rtspClient << "This session has no media subsessions (i.e., no \"m=\" lines)\n";
+      break;
+    }
+
+    // Then, create and set up our data source objects for the session.  We do this by iterating over the session's 'subsessions',
+    // calling "MediaSubsession::initiate()", and then sending a RTSP "SETUP" command, on each one.
+    // (Each 'subsession' will have its own data source.)
+    scs.iter = new MediaSubsessionIterator(*scs.session);
+    setupNextSubsession(rtspClient);
+    return;
+  } while (0);
+
+  // An unrecoverable error occurred with this stream.
+  shutdownStream(rtspClient);
+}
+
+// By default, we request that the server stream its data using RTP/UDP.
+// If, instead, you want to request that the server stream via RTP-over-TCP, change the following to True:
+#define REQUEST_STREAMING_OVER_TCP False
+
+void setupNextSubsession(RTSPClient* rtspClient) {
+  UsageEnvironment& env = rtspClient->envir(); // alias
+  StreamClientState& scs = ((ourRTSPClient*)rtspClient)->scs; // alias
+  
+  scs.subsession = scs.iter->next();
+  if (scs.subsession != NULL) {
+    if (!scs.subsession->initiate()) {
+      env << *rtspClient << "Failed to initiate the \"" << *scs.subsession << "\" subsession: " << env.getResultMsg() << "\n";
+      setupNextSubsession(rtspClient); // give up on this subsession; go to the next one
+    } else {
+      env << *rtspClient << "Initiated the \"" << *scs.subsession << "\" subsession (";
+      if (scs.subsession->rtcpIsMuxed()) {
+	env << "client port " << scs.subsession->clientPortNum();
+      } else {
+	env << "client ports " << scs.subsession->clientPortNum() << "-" << scs.subsession->clientPortNum()+1;
+      }
+      env << ")\n";
+
+      // Continue setting up this subsession, by sending a RTSP "SETUP" command:
+      rtspClient->sendSetupCommand(*scs.subsession, continueAfterSETUP, False, REQUEST_STREAMING_OVER_TCP);
+    }
+    return;
+  }
+
+  // We've finished setting up all of the subsessions.  Now, send a RTSP "PLAY" command to start the streaming:
+  if (scs.session->absStartTime() != NULL) {
+    // Special case: The stream is indexed by 'absolute' time, so send an appropriate "PLAY" command:
+    rtspClient->sendPlayCommand(*scs.session, continueAfterPLAY, scs.session->absStartTime(), scs.session->absEndTime());
+  } else {
+    scs.duration = scs.session->playEndTime() - scs.session->playStartTime();
+    rtspClient->sendPlayCommand(*scs.session, continueAfterPLAY);
+  }
+}
+
+void continueAfterSETUP(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  do {
+    UsageEnvironment& env = rtspClient->envir(); // alias
+    StreamClientState& scs = ((ourRTSPClient*)rtspClient)->scs; // alias
+
+    if (resultCode != 0) {
+      env << *rtspClient << "Failed to set up the \"" << *scs.subsession << "\" subsession: " << resultString << "\n";
+      break;
+    }
+
+    env << *rtspClient << "Set up the \"" << *scs.subsession << "\" subsession (";
+    if (scs.subsession->rtcpIsMuxed()) {
+      env << "client port " << scs.subsession->clientPortNum();
+    } else {
+      env << "client ports " << scs.subsession->clientPortNum() << "-" << scs.subsession->clientPortNum()+1;
+    }
+    env << ")\n";
+
+    // Having successfully setup the subsession, create a data sink for it, and call "startPlaying()" on it.
+    // (This will prepare the data sink to receive data; the actual flow of data from the client won't start happening until later,
+    // after we've sent a RTSP "PLAY" command.)
+
+    scs.subsession->sink = DummySink::createNew(env, *scs.subsession, rtspClient->url());
+      // perhaps use your own custom "MediaSink" subclass instead
+    if (scs.subsession->sink == NULL) {
+      env << *rtspClient << "Failed to create a data sink for the \"" << *scs.subsession
+	  << "\" subsession: " << env.getResultMsg() << "\n";
+      break;
+    }
+
+    env << *rtspClient << "Created a data sink for the \"" << *scs.subsession << "\" subsession\n";
+    scs.subsession->miscPtr = rtspClient; // a hack to let subsession handler functions get the "RTSPClient" from the subsession 
+    scs.subsession->sink->startPlaying(*(scs.subsession->readSource()),
+				       subsessionAfterPlaying, scs.subsession);
+    // Also set a handler to be called if a RTCP "BYE" arrives for this subsession:
+    if (scs.subsession->rtcpInstance() != NULL) {
+      scs.subsession->rtcpInstance()->setByeWithReasonHandler(subsessionByeHandler, scs.subsession);
+    }
+  } while (0);
+  delete[] resultString;
+
+  // Set up the next subsession, if any:
+  setupNextSubsession(rtspClient);
+}
+
+void continueAfterPLAY(RTSPClient* rtspClient, int resultCode, char* resultString) {
+  Boolean success = False;
+
+  do {
+    UsageEnvironment& env = rtspClient->envir(); // alias
+    StreamClientState& scs = ((ourRTSPClient*)rtspClient)->scs; // alias
+
+    if (resultCode != 0) {
+      env << *rtspClient << "Failed to start playing session: " << resultString << "\n";
+      break;
+    }
+
+    // Set a timer to be handled at the end of the stream's expected duration (if the stream does not already signal its end
+    // using a RTCP "BYE").  This is optional.  If, instead, you want to keep the stream active - e.g., so you can later
+    // 'seek' back within it and do another RTSP "PLAY" - then you can omit this code.
+    // (Alternatively, if you don't want to receive the entire stream, you could set this timer for some shorter value.)
+    if (scs.duration > 0) {
+      unsigned const delaySlop = 2; // number of seconds extra to delay, after the stream's expected duration.  (This is optional.)
+      scs.duration += delaySlop;
+      unsigned uSecsToDelay = (unsigned)(scs.duration*1000000);
+      scs.streamTimerTask = env.taskScheduler().scheduleDelayedTask(uSecsToDelay, (TaskFunc*)streamTimerHandler, rtspClient);
+    }
+
+    env << *rtspClient << "Started playing session";
+    if (scs.duration > 0) {
+      env << " (for up to " << scs.duration << " seconds)";
+    }
+    env << "...\n";
+
+    success = True;
+  } while (0);
+  delete[] resultString;
+
+  if (!success) {
+    // An unrecoverable error occurred with this stream.
+    shutdownStream(rtspClient);
+  }
+}
+
+
+// Implementation of the other event handlers:
+
+void subsessionAfterPlaying(void* clientData) {
+  MediaSubsession* subsession = (MediaSubsession*)clientData;
+  RTSPClient* rtspClient = (RTSPClient*)(subsession->miscPtr);
+
+  // Begin by closing this subsession's stream:
+  Medium::close(subsession->sink);
+  subsession->sink = NULL;
+
+  // Next, check whether *all* subsessions' streams have now been closed:
+  MediaSession& session = subsession->parentSession();
+  MediaSubsessionIterator iter(session);
+  while ((subsession = iter.next()) != NULL) {
+    if (subsession->sink != NULL) return; // this subsession is still active
+  }
+
+  // All subsessions' streams have now been closed, so shutdown the client:
+  shutdownStream(rtspClient);
+}
+
+void subsessionByeHandler(void* clientData, char const* reason) {
+  MediaSubsession* subsession = (MediaSubsession*)clientData;
+  RTSPClient* rtspClient = (RTSPClient*)subsession->miscPtr;
+  UsageEnvironment& env = rtspClient->envir(); // alias
+
+  env << *rtspClient << "Received RTCP \"BYE\"";
+  if (reason != NULL) {
+    env << " (reason:\"" << reason << "\")";
+    delete[] (char*)reason;
+  }
+  env << " on \"" << *subsession << "\" subsession\n";
+
+  // Now act as if the subsession had closed:
+  subsessionAfterPlaying(subsession);
+}
+
+void streamTimerHandler(void* clientData) {
+  ourRTSPClient* rtspClient = (ourRTSPClient*)clientData;
+  StreamClientState& scs = rtspClient->scs; // alias
+
+  scs.streamTimerTask = NULL;
+
+  // Shut down the stream:
+  shutdownStream(rtspClient);
+}
+
+void shutdownStream(RTSPClient* rtspClient, int exitCode) {
+  UsageEnvironment& env = rtspClient->envir(); // alias
+  StreamClientState& scs = ((ourRTSPClient*)rtspClient)->scs; // alias
+
+  // First, check whether any subsessions have still to be closed:
+  if (scs.session != NULL) { 
+    Boolean someSubsessionsWereActive = False;
+    MediaSubsessionIterator iter(*scs.session);
+    MediaSubsession* subsession;
+
+    while ((subsession = iter.next()) != NULL) {
+      if (subsession->sink != NULL) {
+	Medium::close(subsession->sink);
+	subsession->sink = NULL;
+
+	if (subsession->rtcpInstance() != NULL) {
+	  subsession->rtcpInstance()->setByeHandler(NULL, NULL); // in case the server sends a RTCP "BYE" while handling "TEARDOWN"
+	}
+
+	someSubsessionsWereActive = True;
+      }
+    }
+
+    if (someSubsessionsWereActive) {
+      // Send a RTSP "TEARDOWN" command, to tell the server to shutdown the stream.
+      // Don't bother handling the response to the "TEARDOWN".
+      rtspClient->sendTeardownCommand(*scs.session, NULL);
+    }
+  }
+
+  env << *rtspClient << "Closing the stream.\n";
+  Medium::close(rtspClient);
+    // Note that this will also cause this stream's "StreamClientState" structure to get reclaimed.
+
+  if (--rtspClientCount == 0) {
+    // The final stream has ended, so exit the application now.
+    // (Of course, if you're embedding this code into your own application, you might want to comment this out,
+    // and replace it with "eventLoopWatchVariable = 1;", so that we leave the LIVE555 event loop, and continue running "main()".)
+    exit(exitCode);
+  }
+}
+
+
+// Implementation of "ourRTSPClient":
+
+ourRTSPClient* ourRTSPClient::createNew(UsageEnvironment& env, char const* rtspURL,
+					int verbosityLevel, char const* applicationName, portNumBits tunnelOverHTTPPortNum) {
+  return new ourRTSPClient(env, rtspURL, verbosityLevel, applicationName, tunnelOverHTTPPortNum);
+}
+
+ourRTSPClient::ourRTSPClient(UsageEnvironment& env, char const* rtspURL,
+			     int verbosityLevel, char const* applicationName, portNumBits tunnelOverHTTPPortNum)
+  : RTSPClient(env,rtspURL, verbosityLevel, applicationName, tunnelOverHTTPPortNum, -1) {
+}
+
+ourRTSPClient::~ourRTSPClient() {
+}
+
+
+// Implementation of "StreamClientState":
+
+StreamClientState::StreamClientState()
+  : iter(NULL), session(NULL), subsession(NULL), streamTimerTask(NULL), duration(0.0) {
+}
+
+StreamClientState::~StreamClientState() {
+  delete iter;
+  if (session != NULL) {
+    // We also need to delete "session", and unschedule "streamTimerTask" (if set)
+    UsageEnvironment& env = session->envir(); // alias
+
+    env.taskScheduler().unscheduleDelayedTask(streamTimerTask);
+    Medium::close(session);
+  }
+}
+
+
+// Implementation of "DummySink":
+
+// Even though we're not going to be doing anything with the incoming data, we still need to receive it.
+// Define the size of the buffer that we'll use:
+#define DUMMY_SINK_RECEIVE_BUFFER_SIZE 100000
+
+DummySink* DummySink::createNew(UsageEnvironment& env, MediaSubsession& subsession, char const* streamId) {
+  return new DummySink(env, subsession, streamId);
+}
+
+DummySink::DummySink(UsageEnvironment& env, MediaSubsession& subsession, char const* streamId)
+  : MediaSink(env),
+    fSubsession(subsession) {
+  fStreamId = strDup(streamId);
+  fReceiveBuffer = new u_int8_t[DUMMY_SINK_RECEIVE_BUFFER_SIZE];
+}
+
+DummySink::~DummySink() {
+  delete[] fReceiveBuffer;
+  delete[] fStreamId;
+}
+
+void DummySink::afterGettingFrame(void* clientData, unsigned frameSize, unsigned numTruncatedBytes,
+				  struct timeval presentationTime, unsigned durationInMicroseconds) {
+  DummySink* sink = (DummySink*)clientData;
+  sink->afterGettingFrame(frameSize, numTruncatedBytes, presentationTime, durationInMicroseconds);
+}
+
+// If you don't want to see debugging output for each received frame, then comment out the following line:
+#define DEBUG_PRINT_EACH_RECEIVED_FRAME 1
+
+void DummySink::afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes,
+				  struct timeval presentationTime, unsigned /*durationInMicroseconds*/) {
+  // We've just received a frame of data.  (Optionally) print out information about it:
+#ifdef DEBUG_PRINT_EACH_RECEIVED_FRAME
+  if (fStreamId != NULL) envir() << "Stream \"" << fStreamId << "\"; ";
+  envir() << fSubsession.mediumName() << "/" << fSubsession.codecName() << ":\tReceived " << frameSize << " bytes";
+  if (numTruncatedBytes > 0) envir() << " (with " << numTruncatedBytes << " bytes truncated)";
+  char uSecsStr[6+1]; // used to output the 'microseconds' part of the presentation time
+  sprintf(uSecsStr, "%06u", (unsigned)presentationTime.tv_usec);
+  envir() << ".\tPresentation time: " << (int)presentationTime.tv_sec << "." << uSecsStr;
+  if (fSubsession.rtpSource() != NULL && !fSubsession.rtpSource()->hasBeenSynchronizedUsingRTCP()) {
+    envir() << "!"; // mark the debugging output to indicate that this presentation time is not RTCP-synchronized
+  }
+#ifdef DEBUG_PRINT_NPT
+  envir() << "\tNPT: " << fSubsession.getNormalPlayTime(presentationTime);
+#endif
+  envir() << "\n";
+#endif
+  
+  // Then continue, to request the next frame of data:
+  continuePlaying();
+}
+
+Boolean DummySink::continuePlaying() {
+  if (fSource == NULL) return False; // sanity check (should not happen)
+
+  // Request the next frame of data from our input source.  "afterGettingFrame()" will get called later, when it arrives:
+  fSource->getNextFrame(fReceiveBuffer, DUMMY_SINK_RECEIVE_BUFFER_SIZE,
+                        afterGettingFrame, this,
+                        onSourceClosure, this);
+  return True;
+}
diff --git a/testProgs/testRelay.cpp b/testProgs/testRelay.cpp
new file mode 100644
index 0000000..2c18093
--- /dev/null
+++ b/testProgs/testRelay.cpp
@@ -0,0 +1,87 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that receives a UDP multicast stream
+// and retransmits it to another (multicast or unicast) address & port
+// main program
+
+#include <liveMedia.hh>
+#include "BasicUsageEnvironment.hh"
+#include "GroupsockHelper.hh"
+
+UsageEnvironment* env;
+
+// To receive a "source-specific multicast" (SSM) stream, uncomment this:
+//#define USE_SSM 1
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create a 'groupsock' for the input multicast group,port:
+  char const* inputAddressStr
+#ifdef USE_SSM
+    = "232.255.42.42";
+#else
+    = "239.255.42.42";
+#endif
+  struct in_addr inputAddress;
+  inputAddress.s_addr = our_inet_addr(inputAddressStr);
+
+  Port const inputPort(8888);
+  unsigned char const inputTTL = 0; // we're only reading from this mcast group
+
+#ifdef USE_SSM
+  char* sourceAddressStr = "aaa.bbb.ccc.ddd";
+                           // replace this with the real source address
+  struct in_addr sourceFilterAddress;
+  sourceFilterAddress.s_addr = our_inet_addr(sourceAddressStr);
+
+  Groupsock inputGroupsock(*env, inputAddress, sourceFilterAddress, inputPort);
+#else
+  Groupsock inputGroupsock(*env, inputAddress, inputPort, inputTTL);
+#endif
+
+  // Then create a liveMedia 'source' object, encapsulating this groupsock:
+  FramedSource* source = BasicUDPSource::createNew(*env, &inputGroupsock);
+
+
+  // Create a 'groupsock' for the destination address and port:
+  char const* outputAddressStr = "239.255.43.43"; // this could also be unicast
+    // Note: You may change "outputAddressStr" to use a different multicast
+    // (or unicast address), but do *not* change it to use the same multicast
+    // address as "inputAddressStr".
+  struct in_addr outputAddress;
+  outputAddress.s_addr = our_inet_addr(outputAddressStr);
+
+  Port const outputPort(4444);
+  unsigned char const outputTTL = 255;
+
+  Groupsock outputGroupsock(*env, outputAddress, outputPort, outputTTL);
+
+  // Then create a liveMedia 'sink' object, encapsulating this groupsock:
+  unsigned const maxPacketSize = 65536; // allow for large UDP packets
+  MediaSink* sink = BasicUDPSink::createNew(*env, &outputGroupsock, maxPacketSize);
+
+
+  // Now, start playing, feeding the sink object from the source:
+  sink->startPlaying(*source, NULL, NULL);
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
diff --git a/testProgs/testReplicator.cpp b/testProgs/testReplicator.cpp
new file mode 100644
index 0000000..459a734
--- /dev/null
+++ b/testProgs/testReplicator.cpp
@@ -0,0 +1,114 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A demo application that receives a UDP multicast stream, replicates it (using the "StreamReplicator" class),
+// and retransmits one replica stream to another (multicast or unicast) address & port,
+// and writes the other replica stream to a file.
+//
+// main program
+
+#include <liveMedia.hh>
+#include "BasicUsageEnvironment.hh"
+#include "GroupsockHelper.hh"
+
+UsageEnvironment* env;
+
+// To receive a "source-specific multicast" (SSM) stream, uncomment this:
+//#define USE_SSM 1
+
+void startReplicaUDPSink(StreamReplicator* replicator, char const* outputAddressStr, portNumBits outputPortNum); // forward
+void startReplicaFileSink(StreamReplicator* replicator, char const* outputFileName); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Create a 'groupsock' for the input multicast group,port:
+  char const* inputAddressStr
+#ifdef USE_SSM
+    = "232.255.42.42";
+#else
+    = "239.255.42.42";
+#endif
+  struct in_addr inputAddress;
+  inputAddress.s_addr = our_inet_addr(inputAddressStr);
+
+  Port const inputPort(8888);
+  unsigned char const inputTTL = 0; // we're only reading from this mcast group
+
+#ifdef USE_SSM
+  char* sourceAddressStr = "aaa.bbb.ccc.ddd";
+                           // replace this with the real source address
+  struct in_addr sourceFilterAddress;
+  sourceFilterAddress.s_addr = our_inet_addr(sourceAddressStr);
+
+  Groupsock inputGroupsock(*env, inputAddress, sourceFilterAddress, inputPort);
+#else
+  Groupsock inputGroupsock(*env, inputAddress, inputPort, inputTTL);
+#endif
+
+  // Then create a liveMedia 'source' object, encapsulating this groupsock:
+  FramedSource* source = BasicUDPSource::createNew(*env, &inputGroupsock);
+
+  // And feed this into a 'stream replicator':
+  StreamReplicator* replicator = StreamReplicator::createNew(*env, source);
+
+  // Then create a network (UDP) 'sink' object to receive a replica of the input stream, and start it.
+  // If you wish, you can duplicate this line - with different network addresses and ports - to create multiple output UDP streams:
+  startReplicaUDPSink(replicator, "239.255.43.43", 4444);
+
+  // Then create a file 'sink' object to receive a replica of the input stream, and start it.
+  // If you wish, you can duplicate this line - with a different file name - to create multiple output files:
+  startReplicaFileSink(replicator, "test.out");
+
+  // Finally, enter the 'event loop' (which is where most of the 'real work' in a LIVE555-based application gets done):
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void startReplicaUDPSink(StreamReplicator* replicator, char const* outputAddressStr, portNumBits outputPortNum) {
+  // Begin by creating an input stream from our replicator:
+  FramedSource* source = replicator->createStreamReplica();
+
+  // Create a 'groupsock' for the destination address and port:
+  struct in_addr outputAddress;
+  outputAddress.s_addr = our_inet_addr(outputAddressStr);
+
+  Port const outputPort(outputPortNum);
+  unsigned char const outputTTL = 255;
+
+  Groupsock* outputGroupsock = new Groupsock(*env, outputAddress, outputPort, outputTTL);
+
+  // Then create a liveMedia 'sink' object, encapsulating this groupsock:
+  unsigned const maxPacketSize = 65536; // allow for large UDP packets
+  MediaSink* sink = BasicUDPSink::createNew(*env, outputGroupsock, maxPacketSize);
+
+  // Now, start playing, feeding the sink object from the source:
+  sink->startPlaying(*source, NULL, NULL);
+}
+
+void startReplicaFileSink(StreamReplicator* replicator, char const* outputFileName) {
+  // Begin by creating an input stream from our replicator:
+  FramedSource* source = replicator->createStreamReplica();
+
+  // Then create a 'file sink' object to receive thie replica stream:
+  MediaSink* sink = FileSink::createNew(*env, outputFileName);
+
+  // Now, start playing, feeding the sink object from the source:
+  sink->startPlaying(*source, NULL, NULL);
+}
diff --git a/testProgs/testWAVAudioStreamer.cpp b/testProgs/testWAVAudioStreamer.cpp
new file mode 100644
index 0000000..199848e
--- /dev/null
+++ b/testProgs/testWAVAudioStreamer.cpp
@@ -0,0 +1,239 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that streams a WAV audio file via RTP/RTCP
+// main program
+
+#include "liveMedia.hh"
+#include "GroupsockHelper.hh"
+
+#include "BasicUsageEnvironment.hh"
+
+// To convert 16-bit samples to 8-bit u-law ("u" is the Greek letter "mu")
+// encoding, before streaming, uncomment the following line:
+//#define CONVERT_TO_ULAW 1
+
+UsageEnvironment* env;
+
+void play(); // forward
+
+int main(int argc, char** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+  return 0; // only to prevent compiler warnings
+}
+
+char const* inputFileName = "test.wav";
+
+void afterPlaying(void* clientData); // forward
+
+// A structure to hold the state of the current session.
+// It is used in the "afterPlaying()" function to clean up the session.
+struct sessionState_t {
+  FramedSource* source;
+  RTPSink* sink;
+  RTCPInstance* rtcpInstance;
+  Groupsock* rtpGroupsock;
+  Groupsock* rtcpGroupsock;
+  RTSPServer* rtspServer;
+} sessionState;
+
+void play() {
+  // Open the file as a 'WAV' file:
+  WAVAudioFileSource* wavSource = WAVAudioFileSource::createNew(*env, inputFileName);
+  if (wavSource == NULL) {
+    *env << "Unable to open file \"" << inputFileName
+	 << "\" as a WAV audio file source: "
+	 << env->getResultMsg() << "\n";
+    exit(1);
+  }
+
+  // Get attributes of the audio source:
+  unsigned char audioFormat = wavSource->getAudioFormat();
+  unsigned char const bitsPerSample = wavSource->bitsPerSample();
+  // We handle only 4,8,16,20,24 bits-per-sample audio:
+  if (bitsPerSample%4 != 0 || bitsPerSample < 4 || bitsPerSample > 24 || bitsPerSample == 12) {
+    *env << "The input file contains " << bitsPerSample << " bit-per-sample audio, which we don't handle\n";
+    exit(1);
+  }
+  unsigned const samplingFrequency = wavSource->samplingFrequency();
+  unsigned char const numChannels = wavSource->numChannels();
+  unsigned bitsPerSecond = samplingFrequency*bitsPerSample*numChannels;
+  *env << "Audio source parameters:\n\t" << samplingFrequency << " Hz, ";
+  *env << bitsPerSample << " bits-per-sample, ";
+  *env << numChannels << " channels => ";
+  *env << bitsPerSecond << " bits-per-second\n";
+
+  char const* mimeType;
+  unsigned char payloadFormatCode = 96; // by default, unless a static RTP payload type can be used
+
+  // Add in any filter necessary to transform the data prior to streaming.
+  // (This is where any audio compression would get added.)
+  sessionState.source = wavSource; // by default
+  if (audioFormat == WA_PCM) {
+    if (bitsPerSample == 16) {
+      // Note that samples in the WAV audio file are in little-endian order.
+#ifdef CONVERT_TO_ULAW
+      // Add a filter that converts from raw 16-bit PCM audio (in little-endian order) to 8-bit u-law audio:
+      sessionState.source = uLawFromPCMAudioSource::createNew(*env, wavSource, 1/*little-endian*/);
+      if (sessionState.source == NULL) {
+	*env << "Unable to create a u-law filter from the PCM audio source: " << env->getResultMsg() << "\n";
+	exit(1);
+      }
+      bitsPerSecond /= 2;
+      *env << "Converting to 8-bit u-law audio for streaming => " << bitsPerSecond << " bits-per-second\n";
+      mimeType = "PCMU";
+      if (samplingFrequency == 8000 && numChannels == 1) {
+	payloadFormatCode = 0; // a static RTP payload type
+      }
+#else
+      // Add a filter that converts from little-endian to network (big-endian) order: 
+      sessionState.source = EndianSwap16::createNew(*env, wavSource);
+      if (sessionState.source == NULL) {
+	*env << "Unable to create a little->bit-endian order filter from the PCM audio source: " << env->getResultMsg() << "\n";
+	exit(1);
+      }
+      *env << "Converting to network byte order for streaming\n";
+      mimeType = "L16";
+      if (samplingFrequency == 44100 && numChannels == 2) {
+	payloadFormatCode = 10; // a static RTP payload type
+      } else if (samplingFrequency == 44100 && numChannels == 1) {
+	payloadFormatCode = 11; // a static RTP payload type
+      }
+#endif
+    } else if (bitsPerSample == 20 || bitsPerSample == 24) {
+      // Add a filter that converts from little-endian to network (big-endian) order: 
+      sessionState.source = EndianSwap24::createNew(*env, wavSource);
+      if (sessionState.source == NULL) {
+	*env << "Unable to create a little->bit-endian order filter from the PCM audio source: " << env->getResultMsg() << "\n";
+	exit(1);
+      }
+      *env << "Converting to network byte order for streaming\n";
+      mimeType = bitsPerSample == 20 ? "L20" : "L24";
+    } else { // bitsPerSample == 8 (we assume that bitsPerSample == 4 is only for WA_IMA_ADPCM)
+      // Don't do any transformation; send the 8-bit PCM data 'as is':
+      mimeType = "L8";
+    }
+  } else if (audioFormat == WA_PCMU) {
+    mimeType = "PCMU";
+    if (samplingFrequency == 8000 && numChannels == 1) {
+      payloadFormatCode = 0; // a static RTP payload type                                                                          
+    }
+  } else if (audioFormat == WA_PCMA) {
+    mimeType = "PCMA";
+    if (samplingFrequency == 8000 && numChannels == 1) {
+      payloadFormatCode = 8; // a static RTP payload type                                                                          
+    } 
+  } else if (audioFormat == WA_IMA_ADPCM) {
+    mimeType = "DVI4";
+    // Use a static payload type, if one is defined:                                                                               
+    if (numChannels == 1) {
+      if (samplingFrequency == 8000) {
+	payloadFormatCode = 5; // a static RTP payload type                                                                        
+      } else if (samplingFrequency == 16000) {
+	payloadFormatCode = 6; // a static RTP payload type                                                                        
+      } else if (samplingFrequency == 11025) {
+	payloadFormatCode = 16; // a static RTP payload type                                                                       
+      } else if (samplingFrequency == 22050) {
+	payloadFormatCode = 17; // a static RTP payload type                                                                       
+      }
+    }
+  } else { //unknown format                                                                                                        
+    *env << "Unknown audio format code \"" << audioFormat << "\" in WAV file header\n";
+    exit(1);
+  }
+
+  // Create 'groupsocks' for RTP and RTCP:
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);
+  // Note: This is a multicast address.  If you wish instead to stream
+  // using unicast, then you should use the "testOnDemandRTSPServer" demo application,
+  // or the "LIVE555 Media Server" - not this application - as a model.
+
+  const unsigned short rtpPortNum = 2222;
+  const unsigned short rtcpPortNum = rtpPortNum+1;
+  const unsigned char ttl = 255;
+
+  const Port rtpPort(rtpPortNum);
+  const Port rtcpPort(rtcpPortNum);
+
+  sessionState.rtpGroupsock
+    = new Groupsock(*env, destinationAddress, rtpPort, ttl);
+  sessionState.rtpGroupsock->multicastSendOnly(); // we're a SSM source
+  sessionState.rtcpGroupsock
+    = new Groupsock(*env, destinationAddress, rtcpPort, ttl);
+  sessionState.rtcpGroupsock->multicastSendOnly(); // we're a SSM source
+
+  // Create an appropriate audio RTP sink (using "SimpleRTPSink") from the RTP 'groupsock':
+  sessionState.sink
+    = SimpleRTPSink::createNew(*env, sessionState.rtpGroupsock,
+			       payloadFormatCode, samplingFrequency,
+			       "audio", mimeType, numChannels);
+
+  // Create (and start) a 'RTCP instance' for this RTP sink:
+  const unsigned estimatedSessionBandwidth = (bitsPerSecond + 500)/1000; // in kbps; for RTCP b/w share
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+  sessionState.rtcpInstance
+    = RTCPInstance::createNew(*env, sessionState.rtcpGroupsock,
+			      estimatedSessionBandwidth, CNAME,
+			      sessionState.sink, NULL /* we're a server */,
+			      True /* we're a SSM source*/);
+  // Note: This starts RTCP running automatically
+
+  // Create and start a RTSP server to serve this stream:
+  sessionState.rtspServer = RTSPServer::createNew(*env, 8554);
+  if (sessionState.rtspServer == NULL) {
+    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+    exit(1);
+  }
+  ServerMediaSession* sms
+    = ServerMediaSession::createNew(*env, "testStream", inputFileName,
+	   "Session streamed by \"testWAVAudiotreamer\"", True/*SSM*/);
+  sms->addSubsession(PassiveServerMediaSubsession::createNew(*sessionState.sink, sessionState.rtcpInstance));
+  sessionState.rtspServer->addServerMediaSession(sms);
+
+  char* url = sessionState.rtspServer->rtspURL(sms);
+  *env << "Play this stream using the URL \"" << url << "\"\n";
+  delete[] url;
+
+  // Finally, start the streaming:
+  *env << "Beginning streaming...\n";
+  sessionState.sink->startPlaying(*sessionState.source, afterPlaying, NULL);
+}
+
+
+void afterPlaying(void* /*clientData*/) {
+  *env << "...done streaming\n";
+
+  // End by closing the media:
+  Medium::close(sessionState.rtspServer);
+  Medium::close(sessionState.rtcpInstance);
+  Medium::close(sessionState.sink);
+  delete sessionState.rtpGroupsock;
+  Medium::close(sessionState.source);
+  delete sessionState.rtcpGroupsock;
+
+  // We're done:
+  exit(0);
+}
diff --git a/testProgs/vobStreamer.cpp b/testProgs/vobStreamer.cpp
new file mode 100644
index 0000000..24975f9
--- /dev/null
+++ b/testProgs/vobStreamer.cpp
@@ -0,0 +1,299 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+**********/
+// Copyright (c) 1996-2020, Live Networks, Inc.  All rights reserved
+// A test program that reads a VOB file
+// splits it into Audio (AC3) and Video (MPEG) Elementary Streams,
+// and streams both using RTP.
+// main program
+
+#include "liveMedia.hh"
+#include "AC3AudioStreamFramer.hh"
+#include "BasicUsageEnvironment.hh"
+#include "GroupsockHelper.hh"
+
+char const* programName;
+// Whether to stream *only* "I" (key) frames
+// (e.g., to reduce network bandwidth):
+Boolean iFramesOnly = False;
+
+unsigned const VOB_AUDIO = 1<<0;
+unsigned const VOB_VIDEO = 1<<1;
+unsigned mediaToStream = VOB_AUDIO|VOB_VIDEO; // by default
+
+char const** inputFileNames;
+char const** curInputFileName;
+Boolean haveReadOneFile = False;
+
+UsageEnvironment* env;
+MPEG1or2Demux* mpegDemux;
+AC3AudioStreamFramer* audioSource = NULL;
+FramedSource* videoSource = NULL;
+RTPSink* audioSink = NULL;
+RTCPInstance* audioRTCP = NULL;
+RTPSink* videoSink = NULL;
+RTCPInstance* videoRTCP = NULL;
+RTSPServer* rtspServer = NULL;
+unsigned short const defaultRTSPServerPortNum = 554;
+unsigned short rtspServerPortNum = defaultRTSPServerPortNum;
+
+Groupsock* rtpGroupsockAudio;
+Groupsock* rtcpGroupsockAudio;
+Groupsock* rtpGroupsockVideo;
+Groupsock* rtcpGroupsockVideo;
+
+void usage() {
+  *env << "usage: " << programName << " [-i] [-a|-v] "
+	  "[-p <RTSP-server-port-number>] "
+	  "<VOB-file>...<VOB-file>\n";
+  exit(1);
+}
+
+void play(); // forward
+
+int main(int argc, char const** argv) {
+  // Begin by setting up our usage environment:
+  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
+  env = BasicUsageEnvironment::createNew(*scheduler);
+
+  // Parse command-line options:
+  // (Unfortunately we can't use getopt() here; Windoze doesn't have it)
+  programName = argv[0];
+  while (argc > 2) {
+    char const* const opt = argv[1];
+    if (opt[0] != '-') break;
+    switch (opt[1]) {
+
+    case 'i': { // transmit video I-frames only
+      iFramesOnly = True;
+      break;
+    }
+
+    case 'a': { // transmit audio, but not video
+      mediaToStream &=~ VOB_VIDEO;
+      break;
+    }
+
+    case 'v': { // transmit video, but not audio
+      mediaToStream &=~ VOB_AUDIO;
+      break;
+    }
+
+    case 'p': { // specify port number for built-in RTSP server
+      int portArg;
+      if (sscanf(argv[2], "%d", &portArg) != 1) {
+        usage();
+      }
+      if (portArg <= 0 || portArg >= 65536) {
+        *env << "bad port number: " << portArg
+	     << " (must be in the range (0,65536))\n";
+        usage();
+      }
+      rtspServerPortNum = (unsigned short)portArg;
+      ++argv; --argc;
+      break;
+    }
+
+    default: {
+      usage();
+      break;
+    }
+    }
+
+    ++argv; --argc;
+  }
+  if (argc < 2) usage();
+  if (mediaToStream == 0) {
+    *env << "The -a and -v flags cannot both be used!\n";
+    usage();
+  }
+  if (iFramesOnly && (mediaToStream&VOB_VIDEO) == 0) {
+    *env << "Warning: Because we're not streaming video, the -i flag has no effect.\n";
+  }
+
+  inputFileNames = &argv[1];
+  curInputFileName = inputFileNames;
+
+  // Create 'groupsocks' for RTP and RTCP:
+  struct in_addr destinationAddress;
+  destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);
+
+  const unsigned short rtpPortNumAudio = 4444;
+  const unsigned short rtcpPortNumAudio = rtpPortNumAudio+1;
+  const unsigned short rtpPortNumVideo = 8888;
+  const unsigned short rtcpPortNumVideo = rtpPortNumVideo+1;
+  const unsigned char ttl = 255;
+
+  const Port rtpPortAudio(rtpPortNumAudio);
+  const Port rtcpPortAudio(rtcpPortNumAudio);
+  const Port rtpPortVideo(rtpPortNumVideo);
+  const Port rtcpPortVideo(rtcpPortNumVideo);
+
+  const unsigned maxCNAMElen = 100;
+  unsigned char CNAME[maxCNAMElen+1];
+  gethostname((char*)CNAME, maxCNAMElen);
+  CNAME[maxCNAMElen] = '\0'; // just in case
+
+  if (mediaToStream&VOB_AUDIO) {
+    rtpGroupsockAudio
+      = new Groupsock(*env, destinationAddress, rtpPortAudio, ttl);
+    rtpGroupsockAudio->multicastSendOnly(); // because we're a SSM source
+
+    // Create an 'AC3 Audio RTP' sink from the RTP 'groupsock':
+    audioSink
+      = AC3AudioRTPSink::createNew(*env, rtpGroupsockAudio, 96, 0);
+    // set the RTP timestamp frequency 'for real' later
+
+    // Create (and start) a 'RTCP instance' for this RTP sink:
+    rtcpGroupsockAudio
+      = new Groupsock(*env, destinationAddress, rtcpPortAudio, ttl);
+    rtcpGroupsockAudio->multicastSendOnly(); // because we're a SSM source
+    const unsigned estimatedSessionBandwidthAudio
+      = 160; // in kbps; for RTCP b/w share
+    audioRTCP = RTCPInstance::createNew(*env, rtcpGroupsockAudio,
+					estimatedSessionBandwidthAudio, CNAME,
+					audioSink, NULL /* we're a server */,
+					True /* we're a SSM source */);
+    // Note: This starts RTCP running automatically
+  }
+
+  if (mediaToStream&VOB_VIDEO) {
+    rtpGroupsockVideo
+      = new Groupsock(*env, destinationAddress, rtpPortVideo, ttl);
+    rtpGroupsockVideo->multicastSendOnly(); // because we're a SSM source
+
+    // Create a 'MPEG Video RTP' sink from the RTP 'groupsock':
+    videoSink = MPEG1or2VideoRTPSink::createNew(*env, rtpGroupsockVideo);
+
+    // Create (and start) a 'RTCP instance' for this RTP sink:
+    rtcpGroupsockVideo
+      = new Groupsock(*env, destinationAddress, rtcpPortVideo, ttl);
+    rtcpGroupsockVideo->multicastSendOnly(); // because we're a SSM source
+    const unsigned estimatedSessionBandwidthVideo
+      = 4500; // in kbps; for RTCP b/w share
+    videoRTCP = RTCPInstance::createNew(*env, rtcpGroupsockVideo,
+					estimatedSessionBandwidthVideo, CNAME,
+					videoSink, NULL /* we're a server */,
+					True /* we're a SSM source */);
+    // Note: This starts RTCP running automatically
+  }
+
+  if (rtspServer == NULL) {
+    rtspServer = RTSPServer::createNew(*env, rtspServerPortNum);
+    if (rtspServer == NULL) {
+      *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
+      *env << "To change the RTSP server's port number, use the \"-p <port number>\" option.\n";
+      exit(1);
+    }
+    ServerMediaSession* sms
+      = ServerMediaSession::createNew(*env, "vobStream", *curInputFileName,
+	     "Session streamed by \"vobStreamer\"", True /*SSM*/);
+    if (audioSink != NULL) sms->addSubsession(PassiveServerMediaSubsession::createNew(*audioSink, audioRTCP));
+    if (videoSink != NULL) sms->addSubsession(PassiveServerMediaSubsession::createNew(*videoSink, videoRTCP));
+    rtspServer->addServerMediaSession(sms);
+
+    *env << "Created RTSP server.\n";
+
+    // Display our "rtsp://" URL, for clients to connect to:
+    char* url = rtspServer->rtspURL(sms);
+    *env << "Access this stream using the URL:\n\t" << url << "\n";
+    delete[] url;
+  }
+
+  // Finally, start the streaming:
+  *env << "Beginning streaming...\n";
+  play();
+
+  env->taskScheduler().doEventLoop(); // does not return
+
+  return 0; // only to prevent compiler warning
+}
+
+void afterPlaying(void* clientData) {
+  // One of the sinks has ended playing.
+  // Check whether any of the sources have a pending read.  If so,
+  // wait until its sink ends playing also:
+  if ((audioSource != NULL && audioSource->isCurrentlyAwaitingData()) ||
+      (videoSource != NULL && videoSource->isCurrentlyAwaitingData())) {
+    return;
+  }
+
+  // Now that both sinks have ended, close both input sources,
+  // and start playing again:
+  *env << "...done reading from file\n";
+
+  if (audioSink != NULL) audioSink->stopPlaying();
+  if (videoSink != NULL) videoSink->stopPlaying();
+      // ensures that both are shut down
+  Medium::close(audioSource);
+  Medium::close(videoSource);
+  Medium::close(mpegDemux);
+  // Note: This also closes the input file that this source read from.
+
+  // Move to the next file name (if any):
+  ++curInputFileName;
+
+  // Start playing once again:
+  play();
+}
+
+void play() {
+  if (*curInputFileName == NULL) {
+    // We have reached the end of the file name list.
+    // Start again, unless we didn't succeed in reading any files:
+    if (!haveReadOneFile) exit(1);
+    haveReadOneFile = False;
+    curInputFileName = inputFileNames;
+  }
+
+  // Open the current input file as a 'byte-stream file source':
+  ByteStreamFileSource* fileSource
+    = ByteStreamFileSource::createNew(*env, *curInputFileName);
+  if (fileSource == NULL) {
+    *env << "Unable to open file \"" << *curInputFileName
+	 << "\" as a byte-stream file source\n";
+    // Try the next file instead:
+    ++curInputFileName;
+    play();
+    return;
+  }
+  haveReadOneFile = True;
+
+  // We must demultiplex Audio and Video Elementary Streams
+  // from the input source:
+  mpegDemux = MPEG1or2Demux::createNew(*env, fileSource);
+  if (mediaToStream&VOB_AUDIO) {
+    FramedSource* audioES = mpegDemux->newElementaryStream(0xBD);
+      // Because, in a VOB file, the AC3 audio has stream id 0xBD
+    audioSource
+      = AC3AudioStreamFramer::createNew(*env, audioES, 0x80);
+  }
+  if (mediaToStream&VOB_VIDEO) {
+    FramedSource* videoES = mpegDemux->newVideoStream();
+
+    videoSource
+      = MPEG1or2VideoStreamFramer::createNew(*env, videoES, iFramesOnly);
+  }
+
+  // Finally, start playing each sink.
+  *env << "Beginning to read from \"" << *curInputFileName << "\"...\n";
+  if (videoSink != NULL) {
+    videoSink->startPlaying(*videoSource, afterPlaying, videoSink);
+  }
+  if (audioSink != NULL) {
+    audioSink->setRTPTimestampFrequency(audioSource->samplingRate());
+    audioSink->startPlaying(*audioSource, afterPlaying, audioSink);
+  }
+}
diff --git a/win32config b/win32config
new file mode 100644
index 0000000..e74cb22
--- /dev/null
+++ b/win32config
@@ -0,0 +1,47 @@
+# Comment out the following line to produce Makefiles that generate debuggable code:
+NODEBUG=1
+
+# The following definition ensures that we are properly matching
+# the WinSock2 library file with the correct header files.
+# (will link with "ws2_32.lib" and include "winsock2.h" & "Ws2tcpip.h")
+TARGETOS = WINNT
+
+# If for some reason you wish to use WinSock1 instead, uncomment the
+# following two definitions.
+# (will link with "wsock32.lib" and include "winsock.h")
+#TARGETOS = WIN95
+#APPVER = 4.0
+
+!include    <ntwin32.mak>
+
+UI_OPTS =		$(guilflags) $(guilibsdll)
+# Use the following to get a console (e.g., for debugging):
+CONSOLE_UI_OPTS =		$(conlflags) $(conlibsdll)
+CPU=i386
+
+TOOLS32	=		c:\Program Files\DevStudio\Vc
+COMPILE_OPTS =		$(INCLUDES) $(cdebug) $(cflags) $(cvarsdll) -I. -I"$(TOOLS32)\include" -DNO_OPENSSL=1
+C =			c
+C_COMPILER =		"$(TOOLS32)\bin\cl"
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	$(C_COMPILER)
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS)
+OBJ =			obj
+LINK =			$(link) -out:
+LIBRARY_LINK =		lib -out:
+LINK_OPTS_0 =		$(linkdebug) msvcirt.lib
+LIBRARY_LINK_OPTS =	
+LINK_OPTS =		$(LINK_OPTS_0) $(UI_OPTS)
+CONSOLE_LINK_OPTS =	$(LINK_OPTS_0) $(CONSOLE_UI_OPTS)
+SERVICE_LINK_OPTS =     kernel32.lib advapi32.lib shell32.lib -subsystem:console,$(APPVER)
+LIB_SUFFIX =		lib
+LIBS_FOR_CONSOLE_APPLICATION =
+LIBS_FOR_GUI_APPLICATION =
+MULTIMEDIA_LIBS =	winmm.lib
+EXE =			.exe
+PLATFORM = Windows
+
+rc32 = "$(TOOLS32)\bin\rc"
+.rc.res:
+	$(rc32) $<
diff --git a/win32config.Borland b/win32config.Borland
new file mode 100644
index 0000000..edc1219
--- /dev/null
+++ b/win32config.Borland
@@ -0,0 +1,46 @@
+# Comment out the following line to produce Makefiles that generate debuggable code:
+NODEBUG=1
+
+# The following definition ensures that we are properly matching
+# the WinSock2 library file with the correct header files.
+# (will link with "ws2_32.lib" and include "winsock2.h" & "Ws2tcpip.h")
+TARGETOS = WINNT
+
+# If for some reason you wish to use WinSock1 instead, uncomment the
+# following two definitions.
+# (will link with "wsock32.lib" and include "winsock.h")
+#TARGETOS = WIN95
+#APPVER = 4.0
+
+#!include    <ntwin32.mak>
+
+UI_OPTS =		$(guilflags) $(guilibsdll)
+# Use the following to get a console (e.g., for debugging):
+CONSOLE_UI_OPTS =		$(conlflags) $(conlibsdll)
+CPU=i386
+
+TOOLS32	=		C:\Progra~1\Borland\CBuilder5
+COMPILE_OPTS =		$(INCLUDES) $(cdebug) $(cflags) $(cvarsdll) -I. -I$(TOOLS32)\include -DNO_OPENSSL=1
+C =			c
+C_COMPILER =		$(TOOLS32)\bin\bcc32
+C_FLAGS =		$(COMPILE_OPTS)
+CPP =			cpp
+CPLUSPLUS_COMPILER =	$(C_COMPILER)
+CPLUSPLUS_FLAGS =	$(COMPILE_OPTS)
+OBJ =			obj
+LINK =			$(TOOLS32)\bin\ilink32
+LIBRARY_LINK =		$(TOOLS32)\bin\tlib 
+LINK_OPTS_0 =		$(linkdebug) msvcirt.lib
+LIBRARY_LINK_OPTS =	/u
+LINK_OPTS =		$(LINK_OPTS_0) $(UI_OPTS)
+CONSOLE_LINK_OPTS =	c0x32 
+
+SERVICE_LINK_OPTS =     kernel32.lib advapi32.lib shell32.lib -subsystem:console,$(APPVER)
+LIB_SUFFIX =		lib
+LIBS_FOR_CONSOLE_APPLICATION = cw32.lib import32.lib
+LIBS_FOR_GUI_APPLICATION = ,,cw32
+EXE =	
+
+rc32 = $(TOOLS32)\bin\brc32"
+.rc.res:
+	$(rc32) $<