GpuProcessD3D11TextureMap.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 MOZILLA_GFX_GpuProcessD3D11TextureMap_H

#define MOZILLA_GFX_GpuProcessD3D11TextureMap_H

#include <d3d11.h>

#include <unordered_map>

#include <unordered_set>

#include "mozilla/gfx/2D.h"

#include "mozilla/layers/LayersTypes.h"

#include "mozilla/layers/TextureHost.h"

#include "mozilla/Maybe.h"

#include "mozilla/StaticPtr.h"

namespace mozilla {

namespace layers {

class IMFSampleUsageInfo;

class TextureWrapperD3D11Allocator;

/**

 * A class to manage ID3D11Texture2Ds that is shared without using shared handle

 * in GPU process. On some GPUs, ID3D11Texture2Ds of hardware decoded video

 * frames with zero video frame copy could not use shared handle.

*/

class GpuProcessD3D11TextureMap {

  struct UpdatingTextureHolder;

 public:

  static void Init();

  static void Shutdown();

  static GpuProcessD3D11TextureMap* Get() { return sInstance; }

  static GpuProcessTextureId GetNextTextureId();

  GpuProcessD3D11TextureMap();

  ~GpuProcessD3D11TextureMap();

  void Register(GpuProcessTextureId aTextureId, ID3D11Texture2D* aTexture,

                uint32_t aArrayIndex, const gfx::IntSize& aSize,

                RefPtr<IMFSampleUsageInfo> aUsageInfo);

  void Register(const MonitorAutoLock& aProofOfLock,

                GpuProcessTextureId aTextureId, ID3D11Texture2D* aTexture,

                uint32_t aArrayIndex, const gfx::IntSize& aSize,

                RefPtr<IMFSampleUsageInfo> aUsageInfo);

  void Unregister(GpuProcessTextureId aTextureId);

  RefPtr<ID3D11Texture2D> GetTexture(GpuProcessTextureId aTextureId);

  Maybe<HANDLE> GetSharedHandleOfCopiedTexture(GpuProcessTextureId aTextureId);

  size_t GetWaitingTextureCount() const;

  bool WaitTextureReady(const GpuProcessTextureId aTextureId);

  void PostUpdateTextureDataTask(const GpuProcessTextureId aTextureId,

                                 TextureHost* aTextureHost,

                                 TextureHost* aWrappedTextureHost,

                                 TextureWrapperD3D11Allocator* aAllocator);

  void HandleInTextureUpdateThread();

 private:

  struct TextureHolder {

    TextureHolder(ID3D11Texture2D* aTexture, uint32_t aArrayIndex,

                  const gfx::IntSize& aSize,

                  RefPtr<IMFSampleUsageInfo> aUsageInfo);

    TextureHolder() = default;

    RefPtr<ID3D11Texture2D> mTexture;

    uint32_t mArrayIndex = 0;

    gfx::IntSize mSize;

    RefPtr<IMFSampleUsageInfo> mIMFSampleUsageInfo;

    RefPtr<ID3D11Texture2D> mCopiedTexture;

    RefPtr<gfx::FileHandleWrapper> mCopiedTextureSharedHandle;

};

  struct UpdatingTextureHolder {

    UpdatingTextureHolder(const GpuProcessTextureId aTextureId,

                          TextureHost* aTextureHost,

                          TextureHost* aWrappedTextureHost,

                          TextureWrapperD3D11Allocator* aAllocator);

    ~UpdatingTextureHolder();

    const GpuProcessTextureId mTextureId;

    RefPtr<TextureHost> mTextureHost;

    CompositableTextureHostRef mWrappedTextureHost;

    RefPtr<TextureWrapperD3D11Allocator> mAllocator;

};

  enum class UpdatingStatus { Waiting, Updating, Error };

  RefPtr<ID3D11Texture2D> UpdateTextureData(UpdatingTextureHolder* aHolder);

  mutable Monitor mMonitor MOZ_UNANNOTATED;

  std::unordered_map<GpuProcessTextureId, TextureHolder,

                     GpuProcessTextureId::HashFn>

      mD3D11TexturesById;

  std::deque<UniquePtr<UpdatingTextureHolder>> mWaitingTextureQueue;

  std::unordered_set<GpuProcessTextureId, GpuProcessTextureId::HashFn>

      mWaitingTextures;

  static StaticAutoPtr<GpuProcessD3D11TextureMap> sInstance;

};

}  // namespace layers

}  // namespace mozilla

#endif /* MOZILLA_GFX_GpuProcessD3D11TextureMap_H */