void
MediaDecoderReader::RequestAudioData()
{
  while (AudioQueue().GetSize() == 0 &&
         !AudioQueue().IsFinished()) {
    if (!DecodeAudioData()) {
      AudioQueue().Finish();
      break;
    }
    // AudioQueue size is still zero, post a task to try again. Don't spin
    // waiting in this while loop since it somehow prevents audio EOS from
    // coming in gstreamer 1.x when there is still video buffer waiting to be
    // consumed. (|mVideoSinkBufferCount| > 0)
    if (AudioQueue().GetSize() == 0 && mTaskQueue) {
      RefPtr<nsIRunnable> task(NS_NewRunnableMethod(
          this, &MediaDecoderReader::RequestAudioData));
      mTaskQueue->Dispatch(task.forget());
      return;
    }
  }
  if (AudioQueue().GetSize() > 0) {
    nsRefPtr<AudioData> a = AudioQueue().PopFront();
    if (mAudioDiscontinuity) {
      a->mDiscontinuity = true;
      mAudioDiscontinuity = false;
    }
    GetCallback()->OnAudioDecoded(a);
    return;
  } else if (AudioQueue().IsFinished()) {
    GetCallback()->OnNotDecoded(MediaData::AUDIO_DATA, END_OF_STREAM);
    return;
  }
}
RefPtr<MediaDecoderReader::MediaDataPromise>
MediaDecoderReader::RequestAudioData()
{
  RefPtr<MediaDataPromise> p = mBaseAudioPromise.Ensure(__func__);
  while (AudioQueue().GetSize() == 0 &&
         !AudioQueue().IsFinished()) {
    if (!DecodeAudioData()) {
      AudioQueue().Finish();
      break;
    }
    // AudioQueue size is still zero, post a task to try again. Don't spin
    // waiting in this while loop since it somehow prevents audio EOS from
    // coming in gstreamer 1.x when there is still video buffer waiting to be
    // consumed. (|mVideoSinkBufferCount| > 0)
    if (AudioQueue().GetSize() == 0) {
      RefPtr<nsIRunnable> task(new ReRequestAudioTask(this));
      mTaskQueue->Dispatch(task.forget());
      return p;
    }
  }
  if (AudioQueue().GetSize() > 0) {
    RefPtr<AudioData> a = AudioQueue().PopFront();
    mBaseAudioPromise.Resolve(a, __func__);
  } else if (AudioQueue().IsFinished()) {
    mBaseAudioPromise.Reject(mHitAudioDecodeError
                             ? NS_ERROR_DOM_MEDIA_FATAL_ERR
                             : NS_ERROR_DOM_MEDIA_END_OF_STREAM, __func__);
    mHitAudioDecodeError = false;
  } else {
    MOZ_ASSERT(false, "Dropping this promise on the floor");
  }

  return p;
}
nsRefPtr<MediaDecoderReader::AudioDataPromise>
MediaDecoderReader::RequestAudioData()
{
  nsRefPtr<AudioDataPromise> p = mBaseAudioPromise.Ensure(__func__);
  while (AudioQueue().GetSize() == 0 &&
         !AudioQueue().IsFinished()) {
    if (!DecodeAudioData()) {
      AudioQueue().Finish();
      break;
    }
    // AudioQueue size is still zero, post a task to try again.
    // (|mVideoSinkBufferCount| > 0)
    if (AudioQueue().GetSize() == 0 && mTaskQueue) {
      RefPtr<nsIRunnable> task(new ReRequestAudioTask(this));
      mTaskQueue->Dispatch(task);
      return p;
    }
  }
  if (AudioQueue().GetSize() > 0) {
    nsRefPtr<AudioData> a = AudioQueue().PopFront();
    if (mAudioDiscontinuity) {
      a->mDiscontinuity = true;
      mAudioDiscontinuity = false;
    }
    mBaseAudioPromise.Resolve(a, __func__);
  } else if (AudioQueue().IsFinished()) {
    mBaseAudioPromise.Reject(mHitAudioDecodeError ? DECODE_ERROR : END_OF_STREAM, __func__);
    mHitAudioDecodeError = false;
  } else {
    MOZ_ASSERT(false, "Dropping this promise on the floor");
  }

  return p;
}
Esempio n. 4
0
HX_RESULT CPCMAudioFormat::DecodeAudioData(HXAudioData& audioData,
					   HXBOOL bFlushCodec)
{
    return DecodeAudioData(audioData,
                           bFlushCodec,
                           CAudioFormat::GetAudioPacket());
}
Esempio n. 5
0
AudioData* MediaDecoderReader::DecodeToFirstAudioData()
{
  bool eof = false;
  while (!eof && AudioQueue().GetSize() == 0) {
    {
      ReentrantMonitorAutoEnter decoderMon(mDecoder->GetReentrantMonitor());
      if (mDecoder->IsShutdown()) {
        return nullptr;
      }
    }
    eof = !DecodeAudioData();
  }
  AudioData* d = nullptr;
  return (d = AudioQueue().PeekFront()) ? d : nullptr;
}
Esempio n. 6
0
nsresult MediaDecoderReader::DecodeToTarget(int64_t aTarget)
{
  DECODER_LOG(PR_LOG_DEBUG, ("MediaDecoderReader::DecodeToTarget(%lld) Begin", aTarget));

  // Decode forward to the target frame. Start with video, if we have it.
  if (HasVideo()) {
    bool eof = false;
    int64_t startTime = -1;
    nsAutoPtr<VideoData> video;
    while (HasVideo() && !eof) {
      while (VideoQueue().GetSize() == 0 && !eof) {
        bool skip = false;
        eof = !DecodeVideoFrame(skip, 0);
        {
          ReentrantMonitorAutoEnter decoderMon(mDecoder->GetReentrantMonitor());
          if (mDecoder->IsShutdown()) {
            return NS_ERROR_FAILURE;
          }
        }
      }
      if (VideoQueue().GetSize() == 0) {
        // Hit end of file, we want to display the last frame of the video.
        if (video) {
          VideoQueue().PushFront(video.forget());
        }
        break;
      }
      video = VideoQueue().PeekFront();
      // If the frame end time is less than the seek target, we won't want
      // to display this frame after the seek, so discard it.
      if (video && video->GetEndTime() <= aTarget) {
        if (startTime == -1) {
          startTime = video->mTime;
        }
        VideoQueue().PopFront();
      } else {
        video.forget();
        break;
      }
    }
    {
      ReentrantMonitorAutoEnter decoderMon(mDecoder->GetReentrantMonitor());
      if (mDecoder->IsShutdown()) {
        return NS_ERROR_FAILURE;
      }
    }
    DECODER_LOG(PR_LOG_DEBUG, ("First video frame after decode is %lld", startTime));
  }

  if (HasAudio()) {
    // Decode audio forward to the seek target.
    bool eof = false;
    while (HasAudio() && !eof) {
      while (!eof && AudioQueue().GetSize() == 0) {
        eof = !DecodeAudioData();
        {
          ReentrantMonitorAutoEnter decoderMon(mDecoder->GetReentrantMonitor());
          if (mDecoder->IsShutdown()) {
            return NS_ERROR_FAILURE;
          }
        }
      }
      const AudioData* audio = AudioQueue().PeekFront();
      if (!audio)
        break;
      CheckedInt64 startFrame = UsecsToFrames(audio->mTime, mInfo.mAudio.mRate);
      CheckedInt64 targetFrame = UsecsToFrames(aTarget, mInfo.mAudio.mRate);
      if (!startFrame.isValid() || !targetFrame.isValid()) {
        return NS_ERROR_FAILURE;
      }
      if (startFrame.value() + audio->mFrames <= targetFrame.value()) {
        // Our seek target lies after the frames in this AudioData. Pop it
        // off the queue, and keep decoding forwards.
        delete AudioQueue().PopFront();
        audio = nullptr;
        continue;
      }
      if (startFrame.value() > targetFrame.value()) {
        // The seek target doesn't lie in the audio block just after the last
        // audio frames we've seen which were before the seek target. This
        // could have been the first audio data we've seen after seek, i.e. the
        // seek terminated after the seek target in the audio stream. Just
        // abort the audio decode-to-target, the state machine will play
        // silence to cover the gap. Typically this happens in poorly muxed
        // files.
        NS_WARNING("Audio not synced after seek, maybe a poorly muxed file?");
        break;
      }

      // The seek target lies somewhere in this AudioData's frames, strip off
      // any frames which lie before the seek target, so we'll begin playback
      // exactly at the seek target.
      NS_ASSERTION(targetFrame.value() >= startFrame.value(),
                   "Target must at or be after data start.");
      NS_ASSERTION(targetFrame.value() < startFrame.value() + audio->mFrames,
                   "Data must end after target.");

      int64_t framesToPrune = targetFrame.value() - startFrame.value();
      if (framesToPrune > audio->mFrames) {
        // We've messed up somehow. Don't try to trim frames, the |frames|
        // variable below will overflow.
        NS_WARNING("Can't prune more frames that we have!");
        break;
      }
      uint32_t frames = audio->mFrames - static_cast<uint32_t>(framesToPrune);
      uint32_t channels = audio->mChannels;
      nsAutoArrayPtr<AudioDataValue> audioData(new AudioDataValue[frames * channels]);
      memcpy(audioData.get(),
             audio->mAudioData.get() + (framesToPrune * channels),
             frames * channels * sizeof(AudioDataValue));
      CheckedInt64 duration = FramesToUsecs(frames, mInfo.mAudio.mRate);
      if (!duration.isValid()) {
        return NS_ERROR_FAILURE;
      }
      nsAutoPtr<AudioData> data(new AudioData(audio->mOffset,
                                              aTarget,
                                              duration.value(),
                                              frames,
                                              audioData.forget(),
                                              channels));
      delete AudioQueue().PopFront();
      AudioQueue().PushFront(data.forget());
      break;
    }
  }

  DECODER_LOG(PR_LOG_DEBUG, ("MediaDecoderReader::DecodeToTarget(%lld) End", aTarget));

  return NS_OK;
}