already_AddRefed<SourceBufferDecoder>
MediaSourceReader::CreateSubDecoder(const nsACString& aType)
{
if (IsShutdown()) {
return nullptr;
}
MOZ_ASSERT(GetTaskQueue());
nsRefPtr<SourceBufferDecoder> decoder =
new SourceBufferDecoder(new SourceBufferResource(aType), mDecoder);
nsRefPtr<MediaDecoderReader> reader(CreateReaderForType(aType, decoder));
if (!reader) {
return nullptr;
}
// Set a callback on the subreader that forwards calls to this reader.
// This reader will then forward them onto the state machine via this
// reader's callback.
RefPtr<MediaDataDecodedListener<MediaSourceReader>> callback =
new MediaDataDecodedListener<MediaSourceReader>(this, GetTaskQueue());
reader->SetCallback(callback);
reader->SetTaskQueue(GetTaskQueue());
reader->Init(nullptr);
MSE_DEBUG("MediaSourceReader(%p)::CreateSubDecoder subdecoder %p subreader %p",
this, decoder.get(), reader.get());
decoder->SetReader(reader);
return decoder.forget();
}
already_AddRefed<SourceBufferDecoder>
MediaSourceReader::CreateSubDecoder(const nsACString& aType, int64_t aTimestampOffset)
{
if (IsShutdown()) {
return nullptr;
}
MOZ_ASSERT(GetTaskQueue());
nsRefPtr<SourceBufferDecoder> decoder =
new SourceBufferDecoder(new SourceBufferResource(aType), mDecoder, aTimestampOffset);
nsRefPtr<MediaDecoderReader> reader(CreateReaderForType(aType, decoder));
if (!reader) {
return nullptr;
}
// MSE uses a start time of 0 everywhere. Set that immediately on the
// subreader to make sure that it's always in a state where we can invoke
// GetBuffered on it.
{
ReentrantMonitorAutoEnter mon(decoder->GetReentrantMonitor());
reader->SetStartTime(0);
}
// This part is icky. It would be nicer to just give each subreader its own
// task queue. Unfortunately though, Request{Audio,Video}Data implementations
// currently assert that they're on "the decode thread", and so having
// separate task queues makes MediaSource stuff unnecessarily cumbersome. We
// should remove the need for these assertions (which probably involves making
// all Request*Data implementations fully async), and then get rid of the
// borrowing.
reader->SetBorrowedTaskQueue(GetTaskQueue());
#ifdef MOZ_FMP4
reader->SetSharedDecoderManager(mSharedDecoderManager);
#endif
reader->Init(nullptr);
MSE_DEBUG("subdecoder %p subreader %p",
decoder.get(), reader.get());
decoder->SetReader(reader);
#ifdef MOZ_EME
decoder->SetCDMProxy(mCDMProxy);
#endif
return decoder.forget();
}
already_AddRefed<SourceBufferDecoder>
MediaSourceReader::CreateSubDecoder(const nsACString& aType)
{
if (IsShutdown()) {
return nullptr;
}
MOZ_ASSERT(GetTaskQueue());
nsRefPtr<SourceBufferDecoder> decoder =
new SourceBufferDecoder(new SourceBufferResource(aType), mDecoder);
nsRefPtr<MediaDecoderReader> reader(CreateReaderForType(aType, decoder));
if (!reader) {
return nullptr;
}
// MSE uses a start time of 0 everywhere. Set that immediately on the
// subreader to make sure that it's always in a state where we can invoke
// GetBuffered on it.
{
ReentrantMonitorAutoEnter mon(decoder->GetReentrantMonitor());
reader->SetStartTime(0);
}
// Set a callback on the subreader that forwards calls to this reader.
// This reader will then forward them onto the state machine via this
// reader's callback.
RefPtr<MediaDataDecodedListener<MediaSourceReader>> callback =
new MediaDataDecodedListener<MediaSourceReader>(this, GetTaskQueue());
reader->SetCallback(callback);
reader->SetTaskQueue(GetTaskQueue());
reader->Init(nullptr);
MSE_DEBUG("MediaSourceReader(%p)::CreateSubDecoder subdecoder %p subreader %p",
this, decoder.get(), reader.get());
decoder->SetReader(reader);
#ifdef MOZ_EME
decoder->SetCDMProxy(mCDMProxy);
#endif
return decoder.forget();
}
