blob: a231643c335d0004e349f305192aa0686b67857d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*
* 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_SCREEN_CAPTURER_WIN_DIRECTX_H_
#define MODULES_DESKTOP_CAPTURE_WIN_SCREEN_CAPTURER_WIN_DIRECTX_H_
#include <d3dcommon.h>
#include <memory>
#include <unordered_map>
#include <vector>
#include "api/scoped_refptr.h"
#include "modules/desktop_capture/desktop_capture_options.h"
#include "modules/desktop_capture/desktop_capturer.h"
#include "modules/desktop_capture/desktop_region.h"
#include "modules/desktop_capture/screen_capture_frame_queue.h"
#include "modules/desktop_capture/win/dxgi_duplicator_controller.h"
#include "modules/desktop_capture/win/dxgi_frame.h"
#include "rtc_base/system/rtc_export.h"
namespace webrtc {
// ScreenCapturerWinDirectx captures 32bit RGBA using DirectX.
class RTC_EXPORT ScreenCapturerWinDirectx : public DesktopCapturer {
public:
using D3dInfo = DxgiDuplicatorController::D3dInfo;
// Whether the system supports DirectX based capturing.
static bool IsSupported();
// Returns a most recent D3dInfo composed by
// DxgiDuplicatorController::Initialize() function. This function implicitly
// calls DxgiDuplicatorController::Initialize() if it has not been
// initialized. This function returns false and output parameter is kept
// unchanged if DxgiDuplicatorController::Initialize() failed.
// The D3dInfo may change based on hardware configuration even without
// restarting the hardware and software. Refer to https://goo.gl/OOCppq. So
// consumers should not cache the result returned by this function.
static bool RetrieveD3dInfo(D3dInfo* info);
// Whether current process is running in a Windows session which is supported
// by ScreenCapturerWinDirectx.
// Usually using ScreenCapturerWinDirectx in unsupported sessions will fail.
// But this behavior may vary on different Windows version. So consumers can
// always try IsSupported() function.
static bool IsCurrentSessionSupported();
// Maps `device_names` with the result from GetScreenList() and creates a new
// SourceList to include only the ones in `device_names`. If this function
// returns true, consumers can always assume `device_names`.size() equals to
// `screens`->size(), meanwhile `device_names`[i] and `screens`[i] indicate
// the same monitor on the system.
// Public for test only.
static bool GetScreenListFromDeviceNames(
const std::vector<std::string>& device_names,
DesktopCapturer::SourceList* screens);
// Maps `id` with the result from GetScreenListFromDeviceNames() and returns
// the index of the entity in `device_names`. This function returns -1 if `id`
// cannot be found.
// Public for test only.
static int GetIndexFromScreenId(ScreenId id,
const std::vector<std::string>& device_names);
// This constructor is deprecated. Please don't use it in new implementations.
ScreenCapturerWinDirectx();
explicit ScreenCapturerWinDirectx(const DesktopCaptureOptions& options);
~ScreenCapturerWinDirectx() override;
ScreenCapturerWinDirectx(const ScreenCapturerWinDirectx&) = delete;
ScreenCapturerWinDirectx& operator=(const ScreenCapturerWinDirectx&) = delete;
// DesktopCapturer implementation.
void Start(Callback* callback) override;
void SetSharedMemoryFactory(
std::unique_ptr<SharedMemoryFactory> shared_memory_factory) override;
void CaptureFrame() override;
bool GetSourceList(SourceList* sources) override;
bool SelectSource(SourceId id) override;
private:
const rtc::scoped_refptr<DxgiDuplicatorController> controller_;
DesktopCaptureOptions options_;
// The underlying DxgiDuplicators may retain a reference to the frames that
// we ask them to duplicate so that they can continue returning valid frames
// in the event that the target has not been updated. Thus, we need to ensure
// that we have a separate frame queue for each source id, so that these held
// frames don't get overwritten with the data from another Duplicator/monitor.
std::unordered_map<SourceId, ScreenCaptureFrameQueue<DxgiFrame>>
frame_queue_map_;
std::unique_ptr<SharedMemoryFactory> shared_memory_factory_;
Callback* callback_ = nullptr;
SourceId current_screen_id_ = kFullDesktopScreenId;
};
} // namespace webrtc
#endif // MODULES_DESKTOP_CAPTURE_WIN_SCREEN_CAPTURER_WIN_DIRECTX_H_
|
