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