dxgi_adapter_duplicator.h

Enable keyboard shortcuts

/*

 *  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_ADAPTER_DUPLICATOR_H_

#define MODULES_DESKTOP_CAPTURE_WIN_DXGI_ADAPTER_DUPLICATOR_H_

#include <wrl/client.h>

#include <vector>

#include "modules/desktop_capture/desktop_geometry.h"

#include "modules/desktop_capture/shared_desktop_frame.h"

#include "modules/desktop_capture/win/d3d_device.h"

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

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

namespace webrtc {

// A container of DxgiOutputDuplicators to duplicate monitors attached to a

// single video card.

class DxgiAdapterDuplicator {

 public:

  using Context = DxgiAdapterContext;

  // Creates an instance of DxgiAdapterDuplicator from a D3dDevice. Only

  // DxgiDuplicatorController can create an instance.

  explicit DxgiAdapterDuplicator(const D3dDevice& device);

  // Move constructor, to make it possible to store instances of

  // DxgiAdapterDuplicator in std::vector<>.

  DxgiAdapterDuplicator(DxgiAdapterDuplicator&& other);

  ~DxgiAdapterDuplicator();

  // Initializes the DxgiAdapterDuplicator from a D3dDevice.

  bool Initialize();

  // Sequentially calls Duplicate function of all the DxgiOutputDuplicator

  // instances owned by this instance, and writes into `target`.

  bool Duplicate(Context* context, SharedDesktopFrame* target);

  // Captures one monitor and writes into `target`. `monitor_id` should be

  // between [0, screen_count()).

  bool DuplicateMonitor(Context* context,

                        int monitor_id,

                        SharedDesktopFrame* target);

  // Returns desktop rect covered by this DxgiAdapterDuplicator.

  DesktopRect desktop_rect() const { return desktop_rect_; }

  // Returns the size of one screen owned by this DxgiAdapterDuplicator. `id`

  // should be between [0, screen_count()).

  DesktopRect ScreenRect(int id) const;

  // Returns the device name of one screen owned by this DxgiAdapterDuplicator

  // in utf8 encoding. `id` should be between [0, screen_count()).

  const std::string& GetDeviceName(int id) const;

  // Returns the count of screens owned by this DxgiAdapterDuplicator. These

  // screens can be retrieved by an interger in the range of

  // [0, screen_count()).

  int screen_count() const;

  void Setup(Context* context);

  void Unregister(const Context* const context);

  // The minimum num_frames_captured() returned by `duplicators_`.

  int64_t GetNumFramesCaptured() const;

  // Moves `desktop_rect_` and all underlying `duplicators_`. See

  // DxgiDuplicatorController::TranslateRect().

  void TranslateRect(const DesktopVector& position);

 private:

  bool DoInitialize();

  const D3dDevice device_;

  std::vector<DxgiOutputDuplicator> duplicators_;

  DesktopRect desktop_rect_;

};

}  // namespace webrtc

#endif  // MODULES_DESKTOP_CAPTURE_WIN_DXGI_ADAPTER_DUPLICATOR_H_