D3D11TextureWrapper.h

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

/* vim:set ts=2 sw=2 sts=2 et cindent: */

/* 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/UniquePtr.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, FFmpegLibWrapper* aLib,

                      ID3D11Texture2D* aTexture, unsigned int aArrayIdx,

                      std::function<void()>&& aReleaseMethod);

  D3D11TextureWrapper(D3D11TextureWrapper&& aWrapper) = delete;

  D3D11TextureWrapper(const D3D11TextureWrapper&& aWrapper) = delete;

  ~D3D11TextureWrapper();

  ID3D11Texture2D* GetTexture() const { return mTexture; }

  unsigned int GetArrayIdx() const { return mArrayIdx; }

 private:

  FFmpegLibWrapper* mLib;

  ID3D11Texture2D* mTexture;

  AVBufferRef* mHWAVBuffer;

  const unsigned int mArrayIdx;

  const std::function<void()> mReleaseMethod;

};

}  // namespace mozilla

#endif  // __D3D11TextureWrapper_h__