D3D11TextureIMFSampleImage.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 GFX_D311_TEXTURE_IMF_SAMPLE_IMAGE_H

#define GFX_D311_TEXTURE_IMF_SAMPLE_IMAGE_H

#include "ImageContainer.h"

#include "mozilla/RefPtr.h"

#include "mozilla/gfx/Types.h"

#include "mozilla/layers/TextureClient.h"

#include "mozilla/layers/TextureD3D11.h"

#include "mozilla/ThreadSafeWeakPtr.h"

struct ID3D11Texture2D;

struct IMFSample;

namespace mozilla {

namespace gl {

class GLBlitHelper;

namespace layers {

class IMFSampleWrapper : public SupportsThreadSafeWeakPtr<IMFSampleWrapper> {

 public:

  MOZ_DECLARE_REFCOUNTED_TYPENAME(IMFSampleWrapper)

  static RefPtr<IMFSampleWrapper> Create(IMFSample* aVideoSample);

  virtual ~IMFSampleWrapper();

  void ClearVideoSample();

 protected:

  explicit IMFSampleWrapper(IMFSample* aVideoSample);

  RefPtr<IMFSample> mVideoSample;

};

class IMFSampleUsageInfo final {

 public:

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(IMFSampleUsageInfo)

  IMFSampleUsageInfo() = default;

  bool SupportsZeroCopyNV12Texture() { return mSupportsZeroCopyNV12Texture; }

  void DisableZeroCopyNV12Texture() { mSupportsZeroCopyNV12Texture = false; }

 protected:

  ~IMFSampleUsageInfo() = default;

  Atomic<bool> mSupportsZeroCopyNV12Texture{true};

};

// Image class that wraps ID3D11Texture2D of IMFSample

// Expected to be used in GPU process.

class D3D11TextureIMFSampleImage final : public Image {

 public:

  D3D11TextureIMFSampleImage(IMFSample* aVideoSample, ID3D11Texture2D* aTexture,

                             uint32_t aArrayIndex, const gfx::IntSize& aSize,

                             const gfx::IntRect& aRect,

                             gfx::ColorSpace2 aColorSpace,

                             gfx::ColorRange aColorRange);

  virtual ~D3D11TextureIMFSampleImage() = default;

  void AllocateTextureClient(KnowsCompositor* aKnowsCompositor,

                             RefPtr<IMFSampleUsageInfo> aUsageInfo);

  gfx::IntSize GetSize() const override;

  already_AddRefed<gfx::SourceSurface> GetAsSourceSurface() override;

  nsresult BuildSurfaceDescriptorBuffer(

      SurfaceDescriptorBuffer& aSdBuffer, BuildSdbFlags aFlags,

      const std::function<MemoryOrShmem(uint32_t)>& aAllocate) override;

  TextureClient* GetTextureClient(KnowsCompositor* aKnowsCompositor) override;

  gfx::IntRect GetPictureRect() const override { return mPictureRect; }

  ID3D11Texture2D* GetTexture() const;

  RefPtr<IMFSampleWrapper> GetIMFSampleWrapper();

  gfx::ColorRange GetColorRange() const { return mColorRange; }

 private:

  friend class gl::GLBlitHelper;

  D3D11TextureData* GetData() const {

    if (!mTextureClient) {

      return nullptr;

    return mTextureClient->GetInternalData()->AsD3D11TextureData();

  // When ref of IMFSample is held, its ID3D11Texture2D is not reused by

  // IMFTransform.

  RefPtr<IMFSampleWrapper> mVideoSample;

  RefPtr<ID3D11Texture2D> mTexture;

 public:

  const uint32_t mArrayIndex;

  const gfx::IntSize mSize;

  const gfx::IntRect mPictureRect;

  const gfx::ColorSpace2 mColorSpace;

  const gfx::ColorRange mColorRange;

 private:

  RefPtr<TextureClient> mTextureClient;

};

}  // namespace layers

}  // namespace mozilla

#endif  // GFX_D311_TEXTURE_IMF_SAMPLE_IMAGE_H