/* 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 D3D11TextureWrapper_h_
#define D3D11TextureWrapper_h_

#include <functional>

#include "mozilla/gfx/Types.h"

struct AVFrame;
struct AVBufferRef;
struct ID3D11Texture2D;

namespace mozilla {

struct FFmpegLibWrapper;

// D3D11TextureWrapper manages the lifecycle of hardware buffers used
// by the FFVPX hardware decoder when zero-copy decoding is enabled. By
// adding a reference to the hardware buffer, it prevents the FFVPX decoder
// from reusing the buffer too early (while it is still being used for display),
// which can help avoid significant playback stutter.
class D3D11TextureWrapper final {
 public:
  D3D11TextureWrapper(AVFrame* aAVFrame, const FFmpegLibWrapper* aLib,
                      ID3D11Texture2D* aTexture,
                      const gfx::SurfaceFormat aFormat,
                      const unsigned int aArrayIdx,
                      std::function<void()>&& aReleaseMethod);
  D3D11TextureWrapper(D3D11TextureWrapper&& aWrapper) = delete;
  D3D11TextureWrapper(const D3D11TextureWrapper&& aWrapper) = delete;

  ~D3D11TextureWrapper();

  ID3D11Texture2D* GetTexture() const { return mTexture; }

  const gfx::SurfaceFormat mFormat;
  const unsigned int mArrayIdx;
  const std::function<void()> mReleaseMethod;

 private:
  const FFmpegLibWrapper* mLib;
  ID3D11Texture2D* mTexture;
  AVBufferRef* mHWAVBuffer;
};

}  // namespace mozilla

#endif  // D3D11TextureWrapper_h_