double
AudioNodeStream::DestinationTimeFromTicks(AudioNodeStream* aDestination,
StreamTime aPosition)
{
MOZ_ASSERT(SampleRate() == aDestination->SampleRate());
GraphTime graphTime = StreamTimeToGraphTime(aPosition);
StreamTime destinationTime = aDestination->GraphTimeToStreamTimeOptimistic(graphTime);
return StreamTimeToSeconds(destinationTime);
}
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 StreamTimeToSeconds(destinationTime);
}
double
AudioNodeStream::TimeFromDestinationTime(AudioNodeStream* aDestination,
double aSeconds)
{
MOZ_ASSERT(aDestination->SampleRate() == SampleRate());
double destinationSeconds = std::max(0.0, aSeconds);
StreamTime streamTime =
aDestination->SecondsToStreamTimeRoundDown(destinationSeconds);
// MediaTime does not have the resolution of double
double offset =
destinationSeconds - aDestination->StreamTimeToSeconds(streamTime);
GraphTime graphTime = aDestination->StreamTimeToGraphTime(streamTime);
StreamTime thisStreamTime = GraphTimeToStreamTimeOptimistic(graphTime);
double thisSeconds = StreamTimeToSeconds(thisStreamTime) + offset;
MOZ_ASSERT(thisSeconds >= 0.0);
return thisSeconds;
}
