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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef include_dom_ipc_RemoteVideoDecoder_h
#define include_dom_ipc_RemoteVideoDecoder_h
#include "mozilla/RefPtr.h"
#include "mozilla/DebugOnly.h"
#include "MediaData.h"
#include "PlatformDecoderModule.h"
namespace mozilla {
namespace dom {
class VideoDecoderChild;
class RemoteDecoderModule;
// A MediaDataDecoder implementation that proxies through IPDL
// to a 'real' decoder in the GPU process.
// All requests get forwarded to a VideoDecoderChild instance that
// operates solely on the VideoDecoderManagerChild thread.
class RemoteVideoDecoder : public MediaDataDecoder
{
public:
friend class RemoteDecoderModule;
// MediaDataDecoder
RefPtr<InitPromise> Init() override;
void Input(MediaRawData* aSample) override;
void Flush() override;
void Drain() override;
void Shutdown() override;
bool IsHardwareAccelerated(nsACString& aFailureReason) const override;
void SetSeekThreshold(const media::TimeUnit& aTime) override;
const char* GetDescriptionName() const override { return "RemoteVideoDecoder"; }
private:
explicit RemoteVideoDecoder(MediaDataDecoderCallback* aCallback);
~RemoteVideoDecoder();
RefPtr<InitPromise> InitInternal();
// Only ever written to from the reader task queue (during the constructor and destructor
// when we can guarantee no other threads are accessing it). Only read from the manager
// thread.
RefPtr<VideoDecoderChild> mActor;
#ifdef DEBUG
MediaDataDecoderCallback* mCallback;
#endif
};
// A PDM implementation that creates RemoteVideoDecoders.
// We currently require a 'wrapped' PDM in order to be able to answer SupportsMimeType
// and DecoderNeedsConversion. Ideally we'd check these over IPDL using the manager
// protocol
class RemoteDecoderModule : public PlatformDecoderModule
{
public:
explicit RemoteDecoderModule(PlatformDecoderModule* aWrapped)
: mWrapped(aWrapped)
{}
nsresult Startup() override;
bool SupportsMimeType(const nsACString& aMimeType,
DecoderDoctorDiagnostics* aDiagnostics) const override;
ConversionRequired DecoderNeedsConversion(
const TrackInfo& aConfig) const override;
already_AddRefed<MediaDataDecoder> CreateVideoDecoder(
const CreateDecoderParams& aParams) override;
already_AddRefed<MediaDataDecoder> CreateAudioDecoder(
const CreateDecoderParams& aParams) override
{
return nullptr;
}
private:
RefPtr<PlatformDecoderModule> mWrapped;
};
} // namespace dom
} // namespace mozilla
#endif // include_dom_ipc_RemoteVideoDecoder_h
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