double
AudioNodeStream::DestinationTimeFromTicks(AudioNodeStream* aDestination,
TrackTicks aPosition)
{
MOZ_ASSERT(SampleRate() == aDestination->SampleRate());
StreamTime sourceTime = TicksToTimeRoundDown(SampleRate(), aPosition);
GraphTime graphTime = StreamTimeToGraphTime(sourceTime);
StreamTime destinationTime = aDestination->GraphTimeToStreamTimeOptimistic(graphTime);
return MediaTimeToSeconds(destinationTime);
}
static int64_t Convert(double aTime, void* aClosure)
{
TrackRate sampleRate = IdealAudioRate();
ConvertTimeToTickHelper* This = static_cast<ConvertTimeToTickHelper*> (aClosure);
TrackTicks tick = This->mSourceStream->GetCurrentPosition();
StreamTime streamTime = TicksToTimeRoundDown(sampleRate, tick);
GraphTime graphTime = This->mSourceStream->StreamTimeToGraphTime(streamTime);
StreamTime destinationStreamTime = This->mDestinationStream->GraphTimeToStreamTime(graphTime);
return TimeToTicksRoundDown(sampleRate, destinationStreamTime + SecondsToMediaTime(aTime));
}
double
WebAudioUtils::StreamPositionToDestinationTime(TrackTicks aSourcePosition,
AudioNodeStream* aSource,
AudioNodeStream* aDestination)
{
MOZ_ASSERT(aSource->SampleRate() == aDestination->SampleRate());
StreamTime sourceTime = TicksToTimeRoundDown(aSource->SampleRate(), aSourcePosition);
GraphTime graphTime = aSource->StreamTimeToGraphTime(sourceTime);
StreamTime destinationTime = aDestination->GraphTimeToStreamTimeOptimistic(graphTime);
return MediaTimeToSeconds(destinationTime);
}
