long
AudioStream::DataCallback(void* aBuffer, long aFrames)
{
MonitorAutoLock mon(mMonitor);
MOZ_ASSERT(mState != SHUTDOWN, "No data callback after shutdown");
auto writer = AudioBufferWriter(
reinterpret_cast<AudioDataValue*>(aBuffer), mOutChannels, aFrames);
// FIXME: cubeb_pulse sometimes calls us before cubeb_stream_start() is called.
// We don't want to consume audio data until Start() is called by the client.
if (mState == INITIALIZED) {
NS_WARNING("data callback fires before cubeb_stream_start() is called");
mAudioClock.UpdateFrameHistory(0, aFrames);
return writer.WriteZeros(aFrames);
}
// NOTE: wasapi (others?) can call us back *after* stop()/Shutdown() (mState == SHUTDOWN)
// Bug 996162
// callback tells us cubeb succeeded initializing
if (mState == STARTED) {
mState = RUNNING;
}
if (mInRate == mOutRate) {
GetUnprocessed(writer);
} else {
GetTimeStretched(writer);
}
// Always send audible frames first, and silent frames later.
// Otherwise it will break the assumption of FrameHistory.
if (!mDataSource.Ended()) {
mAudioClock.UpdateFrameHistory(aFrames - writer.Available(), writer.Available());
if (writer.Available() > 0) {
LOGW("lost %d frames", writer.Available());
writer.WriteZeros(writer.Available());
}
} else {
// No more new data in the data source. Don't send silent frames so the
// cubeb stream can start draining.
mAudioClock.UpdateFrameHistory(aFrames - writer.Available(), 0);
}
WriteDumpFile(mDumpFile, this, aFrames, aBuffer);
return aFrames - writer.Available();
}
long
AudioStream::DataCallback(void* aBuffer, long aFrames)
{
MonitorAutoLock mon(mMonitor);
MOZ_ASSERT(mState != SHUTDOWN, "No data callback after shutdown");
auto writer = AudioBufferWriter(
reinterpret_cast<AudioDataValue*>(aBuffer), mOutChannels, aFrames);
if (mPrefillQuirk) {
// Don't consume audio data until Start() is called.
// Expected only with cubeb winmm backend.
if (mState == INITIALIZED) {
NS_WARNING("data callback fires before cubeb_stream_start() is called");
mAudioClock.UpdateFrameHistory(0, aFrames);
return writer.WriteZeros(aFrames);
}
} else {
MOZ_ASSERT(mState != INITIALIZED);
}
// NOTE: wasapi (others?) can call us back *after* stop()/Shutdown() (mState == SHUTDOWN)
// Bug 996162
if (mAudioClock.GetInputRate() == mAudioClock.GetOutputRate()) {
GetUnprocessed(writer);
} else {
GetTimeStretched(writer);
}
// Always send audible frames first, and silent frames later.
// Otherwise it will break the assumption of FrameHistory.
if (!mDataSource.Ended()) {
mAudioClock.UpdateFrameHistory(aFrames - writer.Available(), writer.Available());
if (writer.Available() > 0) {
LOGW("lost %d frames", writer.Available());
writer.WriteZeros(writer.Available());
}
} else {
// No more new data in the data source. Don't send silent frames so the
// cubeb stream can start draining.
mAudioClock.UpdateFrameHistory(aFrames - writer.Available(), 0);
}
WriteDumpFile(mDumpFile, this, aFrames, aBuffer);
return aFrames - writer.Available();
}
