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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_H_
#define MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_H_
#include <d3d11.h>
#include <dxgi1_2.h>
#include <memory>
#include "modules/desktop_capture/desktop_frame.h"
#include "modules/desktop_capture/desktop_geometry.h"
namespace webrtc {
class DesktopRegion;
// A texture copied or mapped from a DXGI_OUTDUPL_FRAME_INFO and IDXGIResource.
class DxgiTexture {
public:
// Creates a DxgiTexture instance, which represents the `desktop_size` area of
// entire screen -- usually a monitor on the system.
DxgiTexture();
virtual ~DxgiTexture();
// Copies selected regions of a frame represented by frame_info and resource.
// Returns false if anything wrong.
bool CopyFrom(const DXGI_OUTDUPL_FRAME_INFO& frame_info,
IDXGIResource* resource);
const DesktopSize& desktop_size() const { return desktop_size_; }
uint8_t* bits() const { return static_cast<uint8_t*>(rect_.pBits); }
int pitch() const { return static_cast<int>(rect_.Pitch); }
// Releases the resource currently holds by this instance. Returns false if
// anything wrong, and this instance should be deprecated in this state. bits,
// pitch and AsDesktopFrame are only valid after a success CopyFrom() call,
// but before Release() call.
bool Release();
// Returns a DesktopFrame snapshot of a DxgiTexture instance. This
// DesktopFrame is used to copy a DxgiTexture content to another DesktopFrame
// only. And it should not outlive its DxgiTexture instance.
const DesktopFrame& AsDesktopFrame();
protected:
DXGI_MAPPED_RECT* rect();
virtual bool CopyFromTexture(const DXGI_OUTDUPL_FRAME_INFO& frame_info,
ID3D11Texture2D* texture) = 0;
virtual bool DoRelease() = 0;
private:
DXGI_MAPPED_RECT rect_ = {0};
DesktopSize desktop_size_;
std::unique_ptr<DesktopFrame> frame_;
};
} // namespace webrtc
#endif // MODULES_DESKTOP_CAPTURE_WIN_DXGI_TEXTURE_H_
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