void MediaDecoder::PinForSeek()
{
MediaResource* resource = GetResource();
if (!resource || mPinnedForSeek) {
return;
}
mPinnedForSeek = true;
resource->Pin();
}
void MediaDecoder::PinForSeek()
{
MOZ_ASSERT(NS_IsMainThread());
MediaResource* resource = GetResource();
if (!resource || mPinnedForSeek) {
return;
}
mPinnedForSeek = true;
resource->Pin();
}
nsresult
nsDASHReader::GetBuffered(nsTimeRanges* aBuffered,
int64_t aStartTime)
{
NS_ENSURE_ARG(aBuffered);
MediaResource* resource = nullptr;
nsBuiltinDecoder* decoder = nullptr;
// Need to find intersect of |nsTimeRanges| for audio and video.
nsTimeRanges audioBuffered, videoBuffered;
uint32_t audioRangeCount, videoRangeCount;
nsresult rv = NS_OK;
// First, get buffered ranges for sub-readers.
ReentrantMonitorConditionallyEnter mon(!mDecoder->OnDecodeThread(),
mDecoder->GetReentrantMonitor());
if (mAudioReader) {
decoder = mAudioReader->GetDecoder();
NS_ENSURE_TRUE(decoder, NS_ERROR_NULL_POINTER);
resource = decoder->GetResource();
NS_ENSURE_TRUE(resource, NS_ERROR_NULL_POINTER);
resource->Pin();
rv = mAudioReader->GetBuffered(&audioBuffered, aStartTime);
NS_ENSURE_SUCCESS(rv, rv);
resource->Unpin();
rv = audioBuffered.GetLength(&audioRangeCount);
NS_ENSURE_SUCCESS(rv, rv);
}
if (mVideoReader) {
decoder = mVideoReader->GetDecoder();
NS_ENSURE_TRUE(decoder, NS_ERROR_NULL_POINTER);
resource = decoder->GetResource();
NS_ENSURE_TRUE(resource, NS_ERROR_NULL_POINTER);
resource->Pin();
rv = mVideoReader->GetBuffered(&videoBuffered, aStartTime);
NS_ENSURE_SUCCESS(rv, rv);
resource->Unpin();
rv = videoBuffered.GetLength(&videoRangeCount);
NS_ENSURE_SUCCESS(rv, rv);
}
// Now determine buffered data for available sub-readers.
if (mAudioReader && mVideoReader) {
// Calculate intersecting ranges.
for (uint32_t i = 0; i < audioRangeCount; i++) {
// |A|udio, |V|ideo, |I|ntersect.
double startA, startV, startI;
double endA, endV, endI;
rv = audioBuffered.Start(i, &startA);
NS_ENSURE_SUCCESS(rv, rv);
rv = audioBuffered.End(i, &endA);
NS_ENSURE_SUCCESS(rv, rv);
for (uint32_t j = 0; j < videoRangeCount; j++) {
rv = videoBuffered.Start(i, &startV);
NS_ENSURE_SUCCESS(rv, rv);
rv = videoBuffered.End(i, &endV);
NS_ENSURE_SUCCESS(rv, rv);
// If video block is before audio block, compare next video block.
if (startA > endV) {
continue;
// If video block is after audio block, all of them are; compare next
// audio block.
} else if (endA < startV) {
break;
}
// Calculate intersections of current audio and video blocks.
startI = (startA > startV) ? startA : startV;
endI = (endA > endV) ? endV : endA;
aBuffered->Add(startI, endI);
}
}
} else if (mAudioReader) {
*aBuffered = audioBuffered;
} else if (mVideoReader) {
*aBuffered = videoBuffered;
} else {
return NS_ERROR_NOT_INITIALIZED;
}
return NS_OK;
}
