void
MediaEngineWebRTCAudioSource::Process(int channel,
  webrtc::ProcessingTypes type, sample* audio10ms,
  int length, int samplingFreq, bool isStereo)
{
  MonitorAutoLock lock(mMonitor);
  if (mState != kStarted)
    return;

  uint32_t len = mSources.Length();
  for (uint32_t i = 0; i < len; i++) {
    nsRefPtr<SharedBuffer> buffer = SharedBuffer::Create(length * sizeof(sample));

    sample* dest = static_cast<sample*>(buffer->Data());
    memcpy(dest, audio10ms, length * sizeof(sample));

    AudioSegment segment;
    nsAutoTArray<const sample*,1> channels;
    channels.AppendElement(dest);
    segment.AppendFrames(buffer.forget(), channels, length);
    TimeStamp insertTime;
    segment.GetStartTime(insertTime);

    SourceMediaStream *source = mSources[i];
    if (source) {
      // This is safe from any thread, and is safe if the track is Finished
      // or Destroyed.
      // Make sure we include the stream and the track.
      // The 0:1 is a flag to note when we've done the final insert for a given input block.
      LogTime(AsyncLatencyLogger::AudioTrackInsertion, LATENCY_STREAM_ID(source, mTrackID),
              (i+1 < len) ? 0 : 1, insertTime);

      source->AppendToTrack(mTrackID, &segment);
    }
  }

  return;
}
void
MediaEngineWebRTCAudioSource::Process(int channel,
  webrtc::ProcessingTypes type, sample* audio10ms,
  int length, int samplingFreq, bool isStereo)
{
  // On initial capture, throw away all far-end data except the most recent sample
  // since it's already irrelevant and we want to keep avoid confusing the AEC far-end
  // input code with "old" audio.
  if (!mStarted) {
    mStarted  = true;
    while (gFarendObserver->Size() > 1) {
      FarEndAudioChunk *buffer = gFarendObserver->Pop(); // only call if size() > 0
      free(buffer);
    }
  }

  while (gFarendObserver->Size() > 0) {
    FarEndAudioChunk *buffer = gFarendObserver->Pop(); // only call if size() > 0
    if (buffer) {
      int length = buffer->mSamples;
      if (mVoERender->ExternalPlayoutData(buffer->mData,
                                          gFarendObserver->PlayoutFrequency(),
                                          gFarendObserver->PlayoutChannels(),
                                          mPlayoutDelay,
                                          length) == -1) {
        return;
      }
    }
    free(buffer);
  }

#ifdef PR_LOGGING
  mSamples += length;
  if (mSamples > samplingFreq) {
    mSamples %= samplingFreq; // just in case mSamples >> samplingFreq
    if (PR_LOG_TEST(GetMediaManagerLog(), PR_LOG_DEBUG)) {
      webrtc::EchoStatistics echo;

      mVoECallReport->GetEchoMetricSummary(echo);
#define DUMP_STATVAL(x) (x).min, (x).max, (x).average
      LOG(("Echo: ERL: %d/%d/%d, ERLE: %d/%d/%d, RERL: %d/%d/%d, NLP: %d/%d/%d",
           DUMP_STATVAL(echo.erl),
           DUMP_STATVAL(echo.erle),
           DUMP_STATVAL(echo.rerl),
           DUMP_STATVAL(echo.a_nlp)));
    }
  }
#endif

  MonitorAutoLock lock(mMonitor);
  if (mState != kStarted)
    return;

  uint32_t len = mSources.Length();
  for (uint32_t i = 0; i < len; i++) {
    nsRefPtr<SharedBuffer> buffer = SharedBuffer::Create(length * sizeof(sample));

    sample* dest = static_cast<sample*>(buffer->Data());
    memcpy(dest, audio10ms, length * sizeof(sample));

    AudioSegment segment;
    nsAutoTArray<const sample*,1> channels;
    channels.AppendElement(dest);
    segment.AppendFrames(buffer.forget(), channels, length);
    TimeStamp insertTime;
    segment.GetStartTime(insertTime);

    SourceMediaStream *source = mSources[i];
    if (source) {
      // This is safe from any thread, and is safe if the track is Finished
      // or Destroyed.
      // Make sure we include the stream and the track.
      // The 0:1 is a flag to note when we've done the final insert for a given input block.
      LogTime(AsyncLatencyLogger::AudioTrackInsertion, LATENCY_STREAM_ID(source, mTrackID),
              (i+1 < len) ? 0 : 1, insertTime);

      source->AppendToTrack(mTrackID, &segment);
    }
  }

  return;
}