TimeRanges*
SourceBuffer::GetBuffered(ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
// http://w3c.github.io/media-source/index.html#widl-SourceBuffer-buffered
// 1. If this object has been removed from the sourceBuffers attribute of the parent media source then throw an InvalidStateError exception and abort these steps.
if (!IsAttached()) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
bool rangeChanged = true;
media::TimeIntervals intersection = mTrackBuffersManager->Buffered();
MSE_DEBUGV("intersection=%s", DumpTimeRanges(intersection).get());
if (mBuffered) {
media::TimeIntervals currentValue(mBuffered);
rangeChanged = (intersection != currentValue);
MSE_DEBUGV("currentValue=%s", DumpTimeRanges(currentValue).get());
}
// 5. If intersection ranges does not contain the exact same range information as the current value of this attribute, then update the current value of this attribute to intersection ranges.
if (rangeChanged) {
mBuffered = new TimeRanges(ToSupports(this));
intersection.ToTimeRanges(mBuffered);
}
// 6. Return the current value of this attribute.
return mBuffered;
}
void
MediaSourceReader::GetMozDebugReaderData(nsAString& aString)
{
ReentrantMonitorAutoEnter mon(mDecoder->GetReentrantMonitor());
nsAutoCString result;
result += nsPrintfCString("Dumping data for reader %p:\n", this);
if (mAudioTrack) {
result += nsPrintfCString("\tDumping Audio Track Decoders: - mLastAudioTime: %f\n", double(mLastAudioTime) / USECS_PER_S);
for (int32_t i = mAudioTrack->Decoders().Length() - 1; i >= 0; --i) {
nsRefPtr<MediaDecoderReader> newReader = mAudioTrack->Decoders()[i]->GetReader();
nsRefPtr<dom::TimeRanges> ranges = new dom::TimeRanges();
mAudioTrack->Decoders()[i]->GetBuffered(ranges);
result += nsPrintfCString("\t\tReader %d: %p ranges=%s active=%s size=%lld\n",
i, newReader.get(), DumpTimeRanges(ranges).get(),
newReader.get() == GetAudioReader() ? "true" : "false",
mAudioTrack->Decoders()[i]->GetResource()->GetSize());
}
}
if (mVideoTrack) {
result += nsPrintfCString("\tDumping Video Track Decoders - mLastVideoTime: %f\n", double(mLastVideoTime) / USECS_PER_S);
for (int32_t i = mVideoTrack->Decoders().Length() - 1; i >= 0; --i) {
nsRefPtr<MediaDecoderReader> newReader = mVideoTrack->Decoders()[i]->GetReader();
nsRefPtr<dom::TimeRanges> ranges = new dom::TimeRanges();
mVideoTrack->Decoders()[i]->GetBuffered(ranges);
result += nsPrintfCString("\t\tReader %d: %p ranges=%s active=%s size=%lld\n",
i, newReader.get(), DumpTimeRanges(ranges).get(),
newReader.get() == GetVideoReader() ? "true" : "false",
mVideoTrack->Decoders()[i]->GetResource()->GetSize());
}
}
aString += NS_ConvertUTF8toUTF16(result);
}
media::TimeIntervals
MediaSourceDecoder::GetSeekable()
{
MOZ_ASSERT(NS_IsMainThread());
if (!mMediaSource) {
NS_WARNING("MediaSource element isn't attached");
return media::TimeIntervals::Invalid();
}
media::TimeIntervals seekable;
double duration = mMediaSource->Duration();
if (IsNaN(duration)) {
// Return empty range.
} else if (duration > 0 && mozilla::IsInfinite(duration)) {
media::TimeIntervals buffered = GetBuffered();
if (buffered.Length()) {
seekable +=
media::TimeInterval(media::TimeUnit::FromSeconds(0), buffered.GetEnd());
}
} else {
seekable += media::TimeInterval(media::TimeUnit::FromSeconds(0),
media::TimeUnit::FromSeconds(duration));
}
MSE_DEBUG("ranges=%s", DumpTimeRanges(seekable).get());
return seekable;
}
already_AddRefed<TimeRanges>
SourceBuffer::GetBuffered(ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
if (!IsAttached()) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
double highestEndTime = 0;
nsRefPtr<TimeRanges> ranges = new TimeRanges();
// TODO: Need to adjust mDecoders so it only tracks active decoders.
// Once we have an abstraction for track buffers, this needs to report the
// intersection of buffered ranges within those track buffers.
for (uint32_t i = 0; i < mDecoders.Length(); ++i) {
nsRefPtr<TimeRanges> r = new TimeRanges();
mDecoders[i]->GetBuffered(r);
if (r->Length() > 0) {
highestEndTime = std::max(highestEndTime, r->GetEndTime());
ranges->Union(r);
}
}
if (mMediaSource->ReadyState() == MediaSourceReadyState::Ended) {
// Set the end time on the last range to highestEndTime by adding a
// new range spanning the current end time to highestEndTime, which
// Normalize() will then merge with the old last range.
ranges->Add(ranges->GetEndTime(), highestEndTime);
ranges->Normalize();
}
MSE_DEBUGV("SourceBuffer(%p)::GetBuffered ranges=%s", this, DumpTimeRanges(ranges).get());
return ranges.forget();
}
already_AddRefed<SourceBufferDecoder>
MediaSourceDecoder::SelectDecoder(int64_t aTarget,
int64_t aTolerance,
const nsTArray<nsRefPtr<SourceBufferDecoder>>& aTrackDecoders)
{
MOZ_ASSERT(!mIsUsingFormatReader);
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
media::TimeUnit target{media::TimeUnit::FromMicroseconds(aTarget)};
media::TimeUnit tolerance{media::TimeUnit::FromMicroseconds(aTolerance + aTarget)};
// aTolerance gives a slight bias toward the start of a range only.
// Consider decoders in order of newest to oldest, as a newer decoder
// providing a given buffered range is expected to replace an older one.
for (int32_t i = aTrackDecoders.Length() - 1; i >= 0; --i) {
nsRefPtr<SourceBufferDecoder> newDecoder = aTrackDecoders[i];
media::TimeIntervals ranges = newDecoder->GetBuffered();
for (uint32_t j = 0; j < ranges.Length(); j++) {
if (target < ranges.End(j) && tolerance >= ranges.Start(j)) {
return newDecoder.forget();
}
}
MSE_DEBUGV("SelectDecoder(%lld fuzz:%lld) newDecoder=%p (%d/%d) target not in ranges=%s",
aTarget, aTolerance, newDecoder.get(), i+1,
aTrackDecoders.Length(), DumpTimeRanges(ranges).get());
}
return nullptr;
}
already_AddRefed<SourceBufferDecoder>
MediaSourceDecoder::SelectDecoder(int64_t aTarget,
int64_t aTolerance,
const nsTArray<nsRefPtr<SourceBufferDecoder>>& aTrackDecoders)
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
// Consider decoders in order of newest to oldest, as a newer decoder
// providing a given buffered range is expected to replace an older one.
for (int32_t i = aTrackDecoders.Length() - 1; i >= 0; --i) {
nsRefPtr<SourceBufferDecoder> newDecoder = aTrackDecoders[i];
nsRefPtr<dom::TimeRanges> ranges = new dom::TimeRanges();
newDecoder->GetBuffered(ranges);
if (ranges->Find(double(aTarget) / USECS_PER_S,
double(aTolerance) / USECS_PER_S) == dom::TimeRanges::NoIndex) {
MSE_DEBUGV("SelectDecoder(%lld fuzz:%lld) newDecoder=%p (%d/%d) target not in ranges=%s",
aTarget, aTolerance, newDecoder.get(), i+1,
aTrackDecoders.Length(), DumpTimeRanges(ranges).get());
continue;
}
return newDecoder.forget();
}
return nullptr;
}
media::TimeIntervals
MediaSourceReader::GetBuffered()
{
MOZ_ASSERT(OnTaskQueue());
ReentrantMonitorAutoEnter mon(mDecoder->GetReentrantMonitor());
media::TimeIntervals buffered;
media::TimeUnit highestEndTime;
nsTArray<media::TimeIntervals> activeRanges;
// Must set the capacity of the nsTArray first: bug #1164444
activeRanges.SetCapacity(mTrackBuffers.Length());
for (const auto& trackBuffer : mTrackBuffers) {
activeRanges.AppendElement(trackBuffer->Buffered());
highestEndTime = std::max(highestEndTime, activeRanges.LastElement().GetEnd());
}
buffered +=
media::TimeInterval(media::TimeUnit::FromMicroseconds(0), highestEndTime);
for (auto& range : activeRanges) {
if (IsEnded() && range.Length()) {
// Set the end time on the last range to highestEndTime by adding a
// new range spanning the current end time to highestEndTime, which
// Normalize() will then merge with the old last range.
range +=
media::TimeInterval(range.GetEnd(), highestEndTime);
}
buffered.Intersection(range);
}
MSE_DEBUG("ranges=%s", DumpTimeRanges(buffered).get());
return buffered;
}
media::TimeIntervals
MediaSourceDecoder::GetBuffered()
{
MOZ_ASSERT(NS_IsMainThread());
if (!mMediaSource) {
NS_WARNING("MediaSource element isn't attached");
return media::TimeIntervals::Invalid();
}
dom::SourceBufferList* sourceBuffers = mMediaSource->ActiveSourceBuffers();
if (!sourceBuffers) {
// Media source object is shutting down.
return TimeIntervals();
}
media::TimeUnit highestEndTime;
nsTArray<media::TimeIntervals> activeRanges;
media::TimeIntervals buffered;
for (uint32_t i = 0; i < sourceBuffers->Length(); i++) {
bool found;
dom::SourceBuffer* sb = sourceBuffers->IndexedGetter(i, found);
MOZ_ASSERT(found);
activeRanges.AppendElement(sb->GetTimeIntervals());
highestEndTime =
std::max(highestEndTime, activeRanges.LastElement().GetEnd());
}
buffered +=
media::TimeInterval(media::TimeUnit::FromMicroseconds(0), highestEndTime);
for (auto& range : activeRanges) {
if (mEnded && range.Length()) {
// Set the end time on the last range to highestEndTime by adding a
// new range spanning the current end time to highestEndTime, which
// Normalize() will then merge with the old last range.
range +=
media::TimeInterval(range.GetEnd(), highestEndTime);
}
buffered.Intersection(range);
}
MSE_DEBUG("ranges=%s", DumpTimeRanges(buffered).get());
return buffered;
}
already_AddRefed<TimeRanges>
SourceBuffer::GetBuffered(ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
if (!IsAttached()) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
nsRefPtr<TimeRanges> ranges = new TimeRanges();
double highestEndTime = mTrackBuffer->Buffered(ranges);
if (mMediaSource->ReadyState() == MediaSourceReadyState::Ended) {
// Set the end time on the last range to highestEndTime by adding a
// new range spanning the current end time to highestEndTime, which
// Normalize() will then merge with the old last range.
ranges->Add(ranges->GetEndTime(), highestEndTime);
ranges->Normalize();
}
MSE_DEBUGV("ranges=%s", DumpTimeRanges(ranges).get());
return ranges.forget();
}
media::TimeIntervals
MediaSourceDecoder::GetSeekable()
{
MOZ_ASSERT(NS_IsMainThread());
if (!mMediaSource) {
NS_WARNING("MediaSource element isn't attached");
return media::TimeIntervals::Invalid();
}
media::TimeIntervals seekable;
double duration = mMediaSource->Duration();
if (IsNaN(duration)) {
// Return empty range.
} else if (duration > 0 && mozilla::IsInfinite(duration)) {
media::TimeIntervals buffered = GetBuffered();
// 1. If live seekable range is not empty:
if (mMediaSource->HasLiveSeekableRange()) {
// 1. Let union ranges be the union of live seekable range and the
// HTMLMediaElement.buffered attribute.
media::TimeIntervals unionRanges =
buffered + mMediaSource->LiveSeekableRange();
// 2. Return a single range with a start time equal to the earliest start
// time in union ranges and an end time equal to the highest end time in
// union ranges and abort these steps.
seekable +=
media::TimeInterval(unionRanges.GetStart(), unionRanges.GetEnd());
return seekable;
}
if (buffered.Length()) {
seekable +=
media::TimeInterval(media::TimeUnit::FromSeconds(0), buffered.GetEnd());
}
} else {
seekable += media::TimeInterval(media::TimeUnit::FromSeconds(0),
media::TimeUnit::FromSeconds(duration));
}
MSE_DEBUG("ranges=%s", DumpTimeRanges(seekable).get());
return seekable;
}
nsresult
MediaSourceDecoder::GetSeekable(dom::TimeRanges* aSeekable)
{
MOZ_ASSERT(NS_IsMainThread());
if (!mMediaSource) {
return NS_ERROR_FAILURE;
}
double duration = mMediaSource->Duration();
if (IsNaN(duration)) {
// Return empty range.
} else if (duration > 0 && mozilla::IsInfinite(duration)) {
nsRefPtr<dom::TimeRanges> bufferedRanges = new dom::TimeRanges();
mMediaSource->GetBuffered(bufferedRanges);
aSeekable->Add(bufferedRanges->GetStartTime(), bufferedRanges->GetEndTime());
} else {
aSeekable->Add(0, duration);
}
MSE_DEBUG("MediaSourceDecoder(%p)::GetSeekable ranges=%s", this, DumpTimeRanges(aSeekable).get());
return NS_OK;
}
void
MediaSource::GetBuffered(TimeRanges* aBuffered)
{
MOZ_ASSERT(aBuffered->Length() == 0);
if (mActiveSourceBuffers->IsEmpty()) {
return;
}
double highestEndTime = 0;
nsTArray<nsRefPtr<TimeRanges>> activeRanges;
for (uint32_t i = 0; i < mActiveSourceBuffers->Length(); ++i) {
bool found;
SourceBuffer* sourceBuffer = mActiveSourceBuffers->IndexedGetter(i, found);
ErrorResult dummy;
*activeRanges.AppendElement() = sourceBuffer->GetBuffered(dummy);
highestEndTime = std::max(highestEndTime, activeRanges.LastElement()->GetEndTime());
}
TimeRanges* intersectionRanges = aBuffered;
intersectionRanges->Add(0, highestEndTime);
for (uint32_t i = 0; i < activeRanges.Length(); ++i) {
TimeRanges* sourceRanges = activeRanges[i];
if (mReadyState == MediaSourceReadyState::Ended) {
// Set the end time on the last range to highestEndTime by adding a
// new range spanning the current end time to highestEndTime, which
// Normalize() will then merge with the old last range.
sourceRanges->Add(sourceRanges->GetEndTime(), highestEndTime);
sourceRanges->Normalize();
}
intersectionRanges->Intersection(sourceRanges);
}
MSE_DEBUG("MediaSource(%p)::GetBuffered ranges=%s", this, DumpTimeRanges(intersectionRanges).get());
}
nsresult
MediaSourceReader::GetBuffered(dom::TimeRanges* aBuffered)
{
ReentrantMonitorAutoEnter mon(mDecoder->GetReentrantMonitor());
MOZ_ASSERT(aBuffered->Length() == 0);
if (mTrackBuffers.IsEmpty()) {
return NS_OK;
}
double highestEndTime = 0;
nsTArray<nsRefPtr<TimeRanges>> activeRanges;
for (uint32_t i = 0; i < mTrackBuffers.Length(); ++i) {
nsRefPtr<TimeRanges> r = new TimeRanges();
mTrackBuffers[i]->Buffered(r);
activeRanges.AppendElement(r);
highestEndTime = std::max(highestEndTime, activeRanges.LastElement()->GetEndTime());
}
TimeRanges* intersectionRanges = aBuffered;
intersectionRanges->Add(0, highestEndTime);
for (uint32_t i = 0; i < activeRanges.Length(); ++i) {
TimeRanges* sourceRanges = activeRanges[i];
if (IsEnded()) {
// Set the end time on the last range to highestEndTime by adding a
// new range spanning the current end time to highestEndTime, which
// Normalize() will then merge with the old last range.
sourceRanges->Add(sourceRanges->GetEndTime(), highestEndTime);
sourceRanges->Normalize();
}
intersectionRanges->Intersection(sourceRanges);
}
MSE_DEBUG("ranges=%s", DumpTimeRanges(intersectionRanges).get());
return NS_OK;
}
already_AddRefed<MediaDecoderReader>
MediaSourceReader::SelectReader(int64_t aTarget,
const nsTArray<nsRefPtr<SourceBufferDecoder>>& aTrackDecoders)
{
mDecoder->GetReentrantMonitor().AssertCurrentThreadIn();
// Consider decoders in order of newest to oldest, as a newer decoder
// providing a given buffered range is expected to replace an older one.
for (int32_t i = aTrackDecoders.Length() - 1; i >= 0; --i) {
nsRefPtr<MediaDecoderReader> newReader = aTrackDecoders[i]->GetReader();
nsRefPtr<dom::TimeRanges> ranges = new dom::TimeRanges();
aTrackDecoders[i]->GetBuffered(ranges);
if (ranges->Find(double(aTarget) / USECS_PER_S) == dom::TimeRanges::NoIndex) {
MSE_DEBUGV("MediaSourceReader(%p)::SelectReader(%lld) newReader=%p target not in ranges=%s",
this, aTarget, newReader.get(), DumpTimeRanges(ranges).get());
continue;
}
return newReader.forget();
}
return nullptr;
}
