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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_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_
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