int64_t
BufferedAudioStream::GetPositionInFramesUnlocked()
{
mMonitor.AssertCurrentThreadOwns();
if (!mCubebStream || mState == ERRORED) {
return -1;
}
uint64_t position = 0;
{
MonitorAutoUnlock mon(mMonitor);
if (cubeb_stream_get_position(mCubebStream, &position) != CUBEB_OK) {
return -1;
}
}
// Adjust the reported position by the number of silent frames written
// during stream underruns.
uint64_t adjustedPosition = 0;
if (position >= mLostFrames) {
adjustedPosition = position - mLostFrames;
}
return std::min<uint64_t>(adjustedPosition, INT64_MAX);
}
void
BufferedAudioStream::StartUnlocked()
{
mMonitor.AssertCurrentThreadOwns();
if (!mCubebStream || mState != INITIALIZED) {
return;
}
if (mState != STARTED) {
int r;
{
MonitorAutoUnlock mon(mMonitor);
r = cubeb_stream_start(mCubebStream);
}
if (mState != ERRORED) {
mState = r == CUBEB_OK ? STARTED : ERRORED;
}
}
}