void AudioClock::SetPlaybackRateUnlocked(double aPlaybackRate)
{
// GetPositionInFramesUnlocked() asserts it owns the monitor
int64_t position = mAudioStream->GetPositionInFramesUnlocked();
if (position > mPlaybackRateChangeOffset) {
mOldBasePosition = mBasePosition;
mBasePosition = GetPositionUnlocked();
mOldBaseOffset = mPlaybackRateChangeOffset;
mBaseOffset = position;
mPlaybackRateChangeOffset = mWritten;
mOldOutRate = mOutRate;
mOutRate = static_cast<int>(mInRate / aPlaybackRate);
} else {
// The playbackRate has been changed before the end of the latency
// compensation phase. We don't update the mOld* variable. That way, the
// last playbackRate set is taken into account.
mBasePosition = GetPositionUnlocked();
mBaseOffset = position;
mPlaybackRateChangeOffset = mWritten;
mOutRate = static_cast<int>(mInRate / aPlaybackRate);
}
}
int64_t AudioClock::GetPositionInFrames() const
{
return (GetPositionUnlocked() * mInRate) / USECS_PER_S;
}
uint64_t AudioClock::GetPositionInFrames()
{
return (GetPositionUnlocked() * mOutRate) / USECS_PER_S;
}
