C++ (Cpp) AudioStreamIterator::requiresProcessing Examples

Example #1

File: AmB2BMedia.cpp Project: Chocolatbuddha/sems

void AmB2BMedia::changeSessionUnsafe(bool a_leg, AmB2BSession *new_session)
{
  TRACE("changing %s leg session to %p\n", a_leg ? "A" : "B", new_session);
  if (a_leg) a = new_session;
  else b = new_session;

  bool needs_processing = a && b && a->getRtpRelayMode() == AmB2BSession::RTP_Transcoding;

  // update all streams
  for (AudioStreamIterator i = audio.begin(); i != audio.end(); ++i) {
    // stop processing first to avoid unexpected results
    i->a.stopStreamProcessing();
    i->b.stopStreamProcessing();

    // replace session
    if (a_leg) {
      i->a.changeSession(new_session);
    }
    else {
      i->b.changeSession(new_session);
    }

    updateStreamPair(*i);

    if (i->requiresProcessing()) needs_processing = true;

    // reset logger (needed if a stream changes)
    i->setLogger(logger);

    // return back for processing if needed
    i->a.resumeStreamProcessing();
    i->b.resumeStreamProcessing();
  }

  for (RelayStreamIterator j = relay_streams.begin(); j != relay_streams.end(); ++j) {
    AmRtpStream &a = (*j)->a;
    AmRtpStream &b = (*j)->b;

    // FIXME: is stop & resume receiving needed here?
    if (a_leg)
      a.changeSession(new_session);
    else
      b.changeSession(new_session);
  }

  if (needs_processing) {
    if (!isProcessingMedia()) {
      addToMediaProcessorUnsafe();
    }
  }
  else if (isProcessingMedia()) AmMediaProcessor::instance()->removeSession(this);

  TRACE("session changed\n");
}

Example #2

File: AmB2BMedia.cpp Project: joegen/sems

void AmB2BMedia::updateAudioStreams()
{
  // SDP was updated
  TRACE("handling SDP change, A leg: %c%c, B leg: %c%c\n",
      have_a_leg_local_sdp ? 'X' : '-',
      have_a_leg_remote_sdp ? 'X' : '-',
      have_b_leg_local_sdp ? 'X' : '-',
      have_b_leg_remote_sdp ? 'X' : '-');

  // if we have all necessary information we can initialize streams and start
  // their processing
  if (audio.empty() && relay_streams.empty()) return; // no streams

  bool have_a = have_a_leg_local_sdp && have_a_leg_remote_sdp;
  bool have_b = have_b_leg_local_sdp && have_b_leg_remote_sdp;

  if (!(
      (have_a || have_b)
      )) return;

  bool needs_processing = a && b && a->getRtpRelayMode() == AmB2BSession::RTP_Transcoding;

  // initialize streams to be able to relay & transcode (or use local audio)
  for (AudioStreamIterator i = audio.begin(); i != audio.end(); ++i) {
    i->a.stopStreamProcessing();
    i->b.stopStreamProcessing();

    updateStreamPair(*i);

    if (i->requiresProcessing()) needs_processing = true;

    i->a.resumeStreamProcessing();
    i->b.resumeStreamProcessing();
  }

  // start media processing (only if transcoding or regular audio processing
  // required)
  // Note: once we send local SDP to the other party we have to expect RTP but
  // we need to be fully initialised (both legs) before we can correctly handle
  // the media, right?
  if (needs_processing) {
    if (!isProcessingMedia()) {
      addToMediaProcessorUnsafe();
    }
  }
  else if (isProcessingMedia()) AmMediaProcessor::instance()->removeSession(this);
}