1 /*
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "modules/desktop_capture/win/d3d_device.h"
12
13 #include <utility>
14
15 #include "modules/desktop_capture/win/desktop_capture_utils.h"
16 #include "rtc_base/logging.h"
17
18 namespace webrtc {
19
20 using Microsoft::WRL::ComPtr;
21
22 D3dDevice::D3dDevice() = default;
23 D3dDevice::D3dDevice(const D3dDevice& other) = default;
24 D3dDevice::D3dDevice(D3dDevice&& other) = default;
25 D3dDevice::~D3dDevice() = default;
26
Initialize(const ComPtr<IDXGIAdapter> & adapter)27 bool D3dDevice::Initialize(const ComPtr<IDXGIAdapter>& adapter) {
28 dxgi_adapter_ = adapter;
29 if (!dxgi_adapter_) {
30 RTC_LOG(LS_WARNING) << "An empty IDXGIAdapter instance has been received.";
31 return false;
32 }
33
34 D3D_FEATURE_LEVEL feature_level;
35 // Default feature levels contain D3D 9.1 through D3D 11.0.
36 _com_error error = D3D11CreateDevice(
37 adapter.Get(), D3D_DRIVER_TYPE_UNKNOWN, nullptr,
38 D3D11_CREATE_DEVICE_BGRA_SUPPORT | D3D11_CREATE_DEVICE_SINGLETHREADED,
39 nullptr, 0, D3D11_SDK_VERSION, d3d_device_.GetAddressOf(), &feature_level,
40 context_.GetAddressOf());
41 if (error.Error() != S_OK || !d3d_device_ || !context_) {
42 RTC_LOG(LS_WARNING) << "D3D11CreateDevice returned: "
43 << desktop_capture::utils::ComErrorToString(error);
44 return false;
45 }
46
47 if (feature_level < D3D_FEATURE_LEVEL_11_0) {
48 RTC_LOG(LS_WARNING)
49 << "D3D11CreateDevice returned an instance without DirectX 11 support, "
50 << "level " << feature_level << ". Following initialization may fail.";
51 // D3D_FEATURE_LEVEL_11_0 is not officially documented on MSDN to be a
52 // requirement of Dxgi duplicator APIs.
53 }
54
55 error = d3d_device_.As(&dxgi_device_);
56 if (error.Error() != S_OK || !dxgi_device_) {
57 RTC_LOG(LS_WARNING)
58 << "ID3D11Device is not an implementation of IDXGIDevice, "
59 << "this usually means the system does not support DirectX "
60 << "11. Error received: "
61 << desktop_capture::utils::ComErrorToString(error);
62 return false;
63 }
64
65 return true;
66 }
67
68 // static
EnumDevices()69 std::vector<D3dDevice> D3dDevice::EnumDevices() {
70 ComPtr<IDXGIFactory1> factory;
71 _com_error error =
72 CreateDXGIFactory1(__uuidof(IDXGIFactory1),
73 reinterpret_cast<void**>(factory.GetAddressOf()));
74 if (error.Error() != S_OK || !factory) {
75 RTC_LOG(LS_WARNING) << "Cannot create IDXGIFactory1: "
76 << desktop_capture::utils::ComErrorToString(error);
77 return std::vector<D3dDevice>();
78 }
79
80 std::vector<D3dDevice> result;
81 for (int i = 0;; i++) {
82 ComPtr<IDXGIAdapter> adapter;
83 error = factory->EnumAdapters(i, adapter.GetAddressOf());
84 if (error.Error() == S_OK) {
85 D3dDevice device;
86 if (device.Initialize(adapter)) {
87 result.push_back(std::move(device));
88 }
89 } else if (error.Error() == DXGI_ERROR_NOT_FOUND) {
90 break;
91 } else {
92 RTC_LOG(LS_WARNING)
93 << "IDXGIFactory1::EnumAdapters returned an unexpected error: "
94 << desktop_capture::utils::ComErrorToString(error);
95 }
96 }
97 return result;
98 }
99
100 } // namespace webrtc
101