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 "webrtc/modules/desktop_capture/win/d3d_device.h"
12
13 #include <utility>
14
15 #include "webrtc/system_wrappers/include/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 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 LOG(LS_WARNING) << "D3D11CreateDeivce returns error "
42 << error.ErrorMessage() << " with code " << error.Error();
43 return false;
44 }
45
46 if (feature_level < D3D_FEATURE_LEVEL_11_0) {
47 LOG(LS_WARNING) << "D3D11CreateDevice returns an instance without DirectX "
48 "11 support, level " << feature_level
49 << ". Following initialization may fail.";
50 // D3D_FEATURE_LEVEL_11_0 is not officially documented on MSDN to be a
51 // requirement of Dxgi duplicator APIs.
52 }
53
54 error = d3d_device_.As(&dxgi_device_);
55 if (error.Error() != S_OK || !dxgi_device_) {
56 LOG(LS_WARNING) << "ID3D11Device is not an implementation of IDXGIDevice, "
57 "this usually means the system does not support DirectX "
58 "11. Error "
59 << error.ErrorMessage() << " with code " << error.Error();
60 return false;
61 }
62
63 return true;
64 }
65
66 // static
EnumDevices()67 std::vector<D3dDevice> D3dDevice::EnumDevices() {
68 ComPtr<IDXGIFactory1> factory;
69 _com_error error = CreateDXGIFactory1(__uuidof(IDXGIFactory1),
70 reinterpret_cast<void**>(factory.GetAddressOf()));
71 if (error.Error() != S_OK || !factory) {
72 return std::vector<D3dDevice>();
73 }
74
75 std::vector<D3dDevice> result;
76 for (int i = 0;; i++) {
77 ComPtr<IDXGIAdapter> adapter;
78 error = factory->EnumAdapters(i, adapter.GetAddressOf());
79 if (error.Error() == S_OK) {
80 D3dDevice device;
81 if (!device.Initialize(adapter)) {
82 return std::vector<D3dDevice>();
83 }
84 result.push_back(std::move(device));
85 } else if (error.Error() == DXGI_ERROR_NOT_FOUND) {
86 break;
87 } else {
88 LOG(LS_WARNING) << "IDXGIFactory1::EnumAdapters returns an unexpected "
89 "error "
90 << error.ErrorMessage() << " with code " << error.Error();
91 return std::vector<D3dDevice>();
92 }
93 }
94 return result;
95 }
96
97 } // namespace webrtc
98