int64_t
MP3TrackDemuxer::FrameIndexFromTime(const media::TimeUnit& aTime) const {
int64_t frameIndex = 0;
if (mSamplesPerSecond > 0 && mSamplesPerFrame > 0) {
frameIndex = aTime.ToSeconds() * mSamplesPerSecond / mSamplesPerFrame - 1;
}
MP3LOGV("FrameIndexFromOffset(%fs) -> %" PRId64, aTime.ToSeconds(), frameIndex);
return std::max<int64_t>(0, frameIndex);
}
int64_t
WAVTrackDemuxer::ChunkIndexFromTime(const media::TimeUnit& aTime) const
{
if (!mSamplesPerChunk || !mSamplesPerSecond) {
return 0;
}
int64_t chunkIndex =
(aTime.ToSeconds() * mSamplesPerSecond / mSamplesPerChunk) - 1;
return chunkIndex;
}