void
SeekTask::OnAudioDecoded(MediaData* aAudioSample)
{
AssertOwnerThread();
RefPtr<MediaData> audio(aAudioSample);
MOZ_ASSERT(audio);
// The MDSM::mDecodedAudioEndTime will be updated once the whole SeekTask is
// resolved.
SAMPLE_LOG("OnAudioDecoded [%lld,%lld] disc=%d",
(audio ? audio->mTime : -1),
(audio ? audio->GetEndTime() : -1),
(audio ? audio->mDiscontinuity : 0));
if (!Exists()) {
// We've received a sample from a previous decode. Discard it.
return;
}
if (audio->mDiscontinuity) {
mDropAudioUntilNextDiscontinuity = false;
}
if (!mDropAudioUntilNextDiscontinuity) {
// We must be after the discontinuity; we're receiving samples
// at or after the seek target.
if (mSeekJob.mTarget.IsFast() &&
mSeekJob.mTarget.GetTime().ToMicroseconds() > mCurrentTimeBeforeSeek &&
audio->mTime < mCurrentTimeBeforeSeek) {
// We are doing a fastSeek, but we ended up *before* the previous
// playback position. This is surprising UX, so switch to an accurate
// seek and decode to the seek target. This is not conformant to the
// spec, fastSeek should always be fast, but until we get the time to
// change all Readers to seek to the keyframe after the currentTime
// in this case, we'll just decode forward. Bug 1026330.
mSeekJob.mTarget.SetType(SeekTarget::Accurate);
}
if (mSeekJob.mTarget.IsFast()) {
// Non-precise seek; we can stop the seek at the first sample.
mSeekedAudioData = audio;
} else {
// We're doing an accurate seek. We must discard
// MediaData up to the one containing exact seek target.
if (NS_FAILED(DropAudioUpToSeekTarget(audio.get()))) {
RejectIfExist(__func__);
return;
}
}
}
CheckIfSeekComplete();
}
void
AccurateSeekTask::OnAudioDecoded(MediaData* aAudioSample)
{
AssertOwnerThread();
MOZ_ASSERT(!mSeekTaskPromise.IsEmpty(), "Seek shouldn't be finished");
RefPtr<MediaData> audio(aAudioSample);
MOZ_ASSERT(audio);
// The MDSM::mDecodedAudioEndTime will be updated once the whole SeekTask is
// resolved.
SAMPLE_LOG("OnAudioDecoded [%lld,%lld] disc=%d",
audio->mTime, audio->GetEndTime(), audio->mDiscontinuity);
// Video-only seek doesn't reset audio decoder. There might be pending audio
// requests when AccurateSeekTask::Seek() begins. We will just store the data
// without checking |mDiscontinuity| or calling DropAudioUpToSeekTarget().
if (mTarget.IsVideoOnly()) {
mSeekedAudioData = audio.forget();
return;
}
if (mFirstAudioSample) {
mFirstAudioSample = false;
MOZ_ASSERT(audio->mDiscontinuity);
}
AdjustFastSeekIfNeeded(audio);
if (mTarget.IsFast()) {
// Non-precise seek; we can stop the seek at the first sample.
mSeekedAudioData = audio;
mDoneAudioSeeking = true;
} else if (NS_FAILED(DropAudioUpToSeekTarget(audio))) {
CancelCallbacks();
RejectIfExist(__func__);
return;
}
if (!mDoneAudioSeeking) {
RequestAudioData();
return;
}
MaybeFinishSeek();
}
