RemoteVideoDecoder.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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_media_ipc_RemoteVideoDecoderChild_h

#define include_dom_media_ipc_RemoteVideoDecoderChild_h

#include "RemoteDecoderChild.h"

#include "RemoteDecoderManagerChild.h"

#include "RemoteDecoderParent.h"

namespace mozilla::layers {

class BufferRecycleBin;

}  // namespace mozilla::layers

namespace mozilla {

class KnowsCompositorVideo : public layers::KnowsCompositor {

 public:

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(KnowsCompositorVideo, override)

  layers::TextureForwarder* GetTextureForwarder() override;

  layers::LayersIPCActor* GetLayersIPCActor() override;

  static already_AddRefed<KnowsCompositorVideo> TryCreateForIdentifier(

      const layers::TextureFactoryIdentifier& aIdentifier);

 private:

  KnowsCompositorVideo() = default;

  virtual ~KnowsCompositorVideo() = default;

};

using mozilla::ipc::IPCResult;

class RemoteVideoDecoderChild : public RemoteDecoderChild {

 public:

  explicit RemoteVideoDecoderChild(RemoteDecodeIn aLocation);

  MOZ_IS_CLASS_INIT MediaResult

  InitIPDL(const VideoInfo& aVideoInfo, float aFramerate,

           const CreateDecoderParams::OptionSet& aOptions,

           mozilla::Maybe<layers::TextureFactoryIdentifier> aIdentifier,

           const Maybe<uint64_t>& aMediaEngineId,

           const Maybe<TrackingId>& aTrackingId);

  MediaResult ProcessOutput(DecodedOutputIPDL&& aDecodedData) override;

 private:

  RefPtr<mozilla::layers::BufferRecycleBin> mBufferRecycleBin;

};

class RemoteVideoDecoderParent final : public RemoteDecoderParent {

 public:

  RemoteVideoDecoderParent(

      RemoteDecoderManagerParent* aParent, const VideoInfo& aVideoInfo,

      float aFramerate, const CreateDecoderParams::OptionSet& aOptions,

      const Maybe<layers::TextureFactoryIdentifier>& aIdentifier,

      nsISerialEventTarget* aManagerThread, TaskQueue* aDecodeTaskQueue,

      const Maybe<uint64_t>& aMediaEngineId, Maybe<TrackingId> aTrackingId);

 protected:

  IPCResult RecvConstruct(ConstructResolver&& aResolver) override;

  MediaResult ProcessDecodedData(MediaDataDecoder::DecodedData&& aData,

                                 DecodedOutputIPDL& aDecodedData) override;

 private:

  // Can only be accessed from the manager thread

  // Note: we can't keep a reference to the original VideoInfo here

  // because unlike in typical MediaDataDecoder situations, we're being

  // passed a deserialized VideoInfo from RecvPRemoteDecoderConstructor

  // which is destroyed when RecvPRemoteDecoderConstructor returns.

  const VideoInfo mVideoInfo;

  const float mFramerate;

  RefPtr<KnowsCompositorVideo> mKnowsCompositor;

};

}  // namespace mozilla

#endif  // include_dom_media_ipc_RemoteVideoDecoderChild_h