dxgi_texture_mapping.h

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/*

 *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

*/

#ifndef MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_MAPPING_H_

#define MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_MAPPING_H_

#include <d3d11.h>

#include <dxgi1_2.h>

#include "modules/desktop_capture/desktop_geometry.h"

#include "modules/desktop_capture/desktop_region.h"

#include "modules/desktop_capture/win/dxgi_texture.h"

namespace webrtc {

// A DxgiTexture which directly maps bitmap from IDXGIResource. This class is

// used when DXGI_OUTDUPL_DESC.DesktopImageInSystemMemory is true. (This usually

// means the video card shares main memory with CPU, instead of having its own

// individual memory.)

class DxgiTextureMapping : public DxgiTexture {

 public:

  // Creates a DxgiTextureMapping instance. Caller must maintain the lifetime

  // of input `duplication` to make sure it outlives this instance.

  explicit DxgiTextureMapping(IDXGIOutputDuplication* duplication);

  ~DxgiTextureMapping() override;

 protected:

  bool CopyFromTexture(const DXGI_OUTDUPL_FRAME_INFO& frame_info,

                       ID3D11Texture2D* texture) override;

  bool DoRelease() override;

 private:

  IDXGIOutputDuplication* const duplication_;

};

}  // namespace webrtc

#endif  // MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_MAPPING_H_