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/**********
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**********/
// Copyright (c) 1996-2001, 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);
}
}
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