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 "rtc_base/logging.h"
16
17 namespace webrtc {
18
19 using Microsoft::WRL::ComPtr;
20
21 D3dDevice::D3dDevice() = default;
22 D3dDevice::D3dDevice(const D3dDevice& other) = default;
23 D3dDevice::D3dDevice(D3dDevice&& other) = default;
24 D3dDevice::~D3dDevice() = default;
25
Initialize(const ComPtr<IDXGIAdapter> & adapter)26 bool D3dDevice::Initialize(const ComPtr<IDXGIAdapter>& adapter) {
27 dxgi_adapter_ = adapter;
28 if (!dxgi_adapter_) {
29 RTC_LOG(LS_WARNING) << "An empty IDXGIAdapter instance has been received.";
30 return false;
31 }
32
33 D3D_FEATURE_LEVEL feature_level;
34 // Default feature levels contain D3D 9.1 through D3D 11.0.
35 _com_error error = D3D11CreateDevice(
36 adapter.Get(), D3D_DRIVER_TYPE_UNKNOWN, nullptr,
37 D3D11_CREATE_DEVICE_BGRA_SUPPORT | D3D11_CREATE_DEVICE_SINGLETHREADED,
38 nullptr, 0, D3D11_SDK_VERSION, d3d_device_.GetAddressOf(), &feature_level,
39 context_.GetAddressOf());
40 if (error.Error() != S_OK || !d3d_device_ || !context_) {
41 RTC_LOG(LS_WARNING) << "D3D11CreateDeivce returns error "
42 << error.ErrorMessage() << " with code "
43 << error.Error();
44 return false;
45 }
46
47 if (feature_level < D3D_FEATURE_LEVEL_11_0) {
48 RTC_LOG(LS_WARNING)
49 << "D3D11CreateDevice returns an instance without DirectX "
50 "11 support, level "
51 << feature_level << ". Following initialization may fail.";
52 // D3D_FEATURE_LEVEL_11_0 is not officially documented on MSDN to be a
53 // requirement of Dxgi duplicator APIs.
54 }
55
56 error = d3d_device_.As(&dxgi_device_);
57 if (error.Error() != S_OK || !dxgi_device_) {
58 RTC_LOG(LS_WARNING)
59 << "ID3D11Device is not an implementation of IDXGIDevice, "
60 "this usually means the system does not support DirectX "
61 "11. Error "
62 << error.ErrorMessage() << " with code " << error.Error();
63 return false;
64 }
65
66 return true;
67 }
68
69 // static
EnumDevices()70 std::vector<D3dDevice> D3dDevice::EnumDevices() {
71 ComPtr<IDXGIFactory1> factory;
72 _com_error error = 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 return std::vector<D3dDevice>();
77 }
78
79 std::vector<D3dDevice> result;
80 for (int i = 0;; i++) {
81 ComPtr<IDXGIAdapter> adapter;
82 error = factory->EnumAdapters(i, adapter.GetAddressOf());
83 if (error.Error() == S_OK) {
84 D3dDevice device;
85 if (device.Initialize(adapter)) {
86 result.push_back(std::move(device));
87 }
88 } else if (error.Error() == DXGI_ERROR_NOT_FOUND) {
89 break;
90 } else {
91 RTC_LOG(LS_WARNING)
92 << "IDXGIFactory1::EnumAdapters returns an unexpected "
93 "error "
94 << error.ErrorMessage() << " with code " << error.Error();
95 }
96 }
97 return result;
98 }
99
100 } // namespace webrtc
101