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