AC3AudioFileServerMediaSubsession.cpp

/**********
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// "liveMedia"
// Copyright (c) 1996-2019 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());
}