diff options
Diffstat (limited to 'dom/media/AudioPacketizer.h')
| -rw-r--r-- | dom/media/AudioPacketizer.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/dom/media/AudioPacketizer.h b/dom/media/AudioPacketizer.h index 8df04c0c5c..17579618ea 100644 --- a/dom/media/AudioPacketizer.h +++ b/dom/media/AudioPacketizer.h @@ -100,11 +100,15 @@ class AudioPacketizer { return out; } - void Output(OutputType* aOutputBuffer) { + // Return the number of actual frames dequeued -- this can be lower than the + // packet size when underruning or draining. + size_t Output(OutputType* aOutputBuffer) { uint32_t samplesNeeded = mPacketSize * mChannels; + size_t rv = 0; // Under-run. Pad the end of the buffer with silence. if (AvailableSamples() < samplesNeeded) { + rv = AvailableSamples() / mChannels; #ifdef LOG_PACKETIZER_UNDERRUN char buf[256]; snprintf(buf, 256, @@ -115,6 +119,8 @@ class AudioPacketizer { uint32_t zeros = samplesNeeded - AvailableSamples(); PodZero(aOutputBuffer + AvailableSamples(), zeros); samplesNeeded -= zeros; + } else { + rv = mPacketSize; } if (ReadIndex() + samplesNeeded <= mLength) { ConvertAudioSamples<InputType, OutputType>(mStorage.get() + ReadIndex(), @@ -128,6 +134,7 @@ class AudioPacketizer { mStorage.get(), aOutputBuffer + firstPartLength, secondPartLength); } mReadIndex += samplesNeeded; + return rv; } void Clear() { |