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https://github.com/rgaufman/live555.git
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103 lines
3.6 KiB
C++
103 lines
3.6 KiB
C++
/**********
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This library is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 3 of the License, or (at your
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option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
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This library is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this library; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**********/
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// Copyright (c) 1996-2025, Live Networks, Inc. All rights reserved
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// A test program that splits a MPEG-1 or 2 Program Stream file into
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// video and audio output files.
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// main program
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#include "liveMedia.hh"
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#include "BasicUsageEnvironment.hh"
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#include <stdlib.h>
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char const* inputFileName = "in.mpg";
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char const* outputFileName_video = "out_video.mpg";
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char const* outputFileName_audio = "out_audio.mpg";
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void afterPlaying(void* clientData); // forward
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// A structure to hold the state of the current session.
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// It is used in the "afterPlaying()" function to clean up the session.
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struct sessionState_t {
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MPEG1or2Demux* baseDemultiplexor;
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MediaSource* videoSource;
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MediaSource* audioSource;
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FileSink* videoSink;
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FileSink* audioSink;
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} sessionState;
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UsageEnvironment* env;
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int main(int argc, char** argv) {
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// Begin by setting up our usage environment:
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TaskScheduler* scheduler = BasicTaskScheduler::createNew();
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env = BasicUsageEnvironment::createNew(*scheduler);
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// Open the input file as a 'byte-stream file source':
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ByteStreamFileSource* inputSource
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= ByteStreamFileSource::createNew(*env, inputFileName);
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if (inputSource == NULL) {
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*env << "Unable to open file \"" << inputFileName
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<< "\" as a byte-stream file source\n";
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exit(1);
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}
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// Create a MPEG demultiplexor that reads from that source.
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sessionState.baseDemultiplexor = MPEG1or2Demux::createNew(*env, inputSource);
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// Create, from this, our own sources (video and audio):
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sessionState.videoSource = sessionState.baseDemultiplexor->newVideoStream();
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sessionState.audioSource = sessionState.baseDemultiplexor->newAudioStream();
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// Create the data sinks (output files):
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sessionState.videoSink = FileSink::createNew(*env, outputFileName_video);
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sessionState.audioSink = FileSink::createNew(*env, outputFileName_audio);
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// Finally, start playing each sink.
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*env << "Beginning to read...\n";
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sessionState.videoSink->startPlaying(*sessionState.videoSource,
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afterPlaying, sessionState.videoSink);
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sessionState.audioSink->startPlaying(*sessionState.audioSource,
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afterPlaying, sessionState.audioSink);
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env->taskScheduler().doEventLoop(); // does not return
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return 0; // only to prevent compiler warning
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}
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void afterPlaying(void* clientData) {
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Medium* finishedSink = (Medium*)clientData;
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if (finishedSink == sessionState.videoSink) {
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*env << "No more video\n";
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Medium::close(sessionState.videoSink);
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Medium::close(sessionState.videoSource);
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sessionState.videoSink = NULL;
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} else if (finishedSink == sessionState.audioSink) {
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*env << "No more audio\n";
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Medium::close(sessionState.audioSink);
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Medium::close(sessionState.audioSource);
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sessionState.audioSink = NULL;
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}
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if (sessionState.videoSink == NULL && sessionState.audioSink == NULL) {
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*env << "...finished reading\n";
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Medium::close(sessionState.baseDemultiplexor);
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exit(0);
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}
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}
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