| /********** |
| This library is free software; you can redistribute it and/or modify it under |
| the terms of the GNU Lesser General Public License as published by the |
| Free Software Foundation; either version 3 of the License, or (at your |
| option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.) |
| |
| This library is distributed in the hope that it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for |
| more details. |
| |
| You should have received a copy of the GNU Lesser General Public 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); |
| } |