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d3d_device.cc (3450B)

      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 #include <vector>
     15 
     16 #include "modules/desktop_capture/win/desktop_capture_utils.h"
     17 #include "rtc_base/logging.h"
     18 
     19 namespace webrtc {
     20 
     21 using Microsoft::WRL::ComPtr;
     22 
     23 D3dDevice::D3dDevice() = default;
     24 D3dDevice::D3dDevice(const D3dDevice& other) = default;
     25 D3dDevice::D3dDevice(D3dDevice&& other) = default;
     26 D3dDevice::~D3dDevice() = default;
     27 
     28 bool D3dDevice::Initialize(const ComPtr<IDXGIAdapter>& adapter) {
     29  dxgi_adapter_ = adapter;
     30  if (!dxgi_adapter_) {
     31    RTC_LOG(LS_WARNING) << "An empty IDXGIAdapter instance has been received.";
     32    return false;
     33  }
     34 
     35  D3D_FEATURE_LEVEL feature_level;
     36  // Default feature levels contain D3D 9.1 through D3D 11.0.
     37  _com_error error = D3D11CreateDevice(
     38      adapter.Get(), D3D_DRIVER_TYPE_UNKNOWN, nullptr,
     39      D3D11_CREATE_DEVICE_BGRA_SUPPORT | D3D11_CREATE_DEVICE_SINGLETHREADED,
     40      nullptr, 0, D3D11_SDK_VERSION, d3d_device_.GetAddressOf(), &feature_level,
     41      context_.GetAddressOf());
     42  if (error.Error() != S_OK || !d3d_device_ || !context_) {
     43    RTC_LOG(LS_WARNING) << "D3D11CreateDevice returned: "
     44                        << desktop_capture::utils::ComErrorToString(error);
     45    return false;
     46  }
     47 
     48  if (feature_level < D3D_FEATURE_LEVEL_11_0) {
     49    RTC_LOG(LS_WARNING)
     50        << "D3D11CreateDevice returned an instance without DirectX 11 support, "
     51        << "level " << 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 received: "
     62        << desktop_capture::utils::ComErrorToString(error);
     63    return false;
     64  }
     65 
     66  return true;
     67 }
     68 
     69 // static
     70 std::vector<D3dDevice> D3dDevice::EnumDevices() {
     71  ComPtr<IDXGIFactory1> factory;
     72  _com_error error =
     73      CreateDXGIFactory1(__uuidof(IDXGIFactory1),
     74                         reinterpret_cast<void**>(factory.GetAddressOf()));
     75  if (error.Error() != S_OK || !factory) {
     76    RTC_LOG(LS_WARNING) << "Cannot create IDXGIFactory1: "
     77                        << desktop_capture::utils::ComErrorToString(error);
     78    return std::vector<D3dDevice>();
     79  }
     80 
     81  std::vector<D3dDevice> result;
     82  for (int i = 0;; i++) {
     83    ComPtr<IDXGIAdapter> adapter;
     84    error = factory->EnumAdapters(i, adapter.GetAddressOf());
     85    if (error.Error() == S_OK) {
     86      D3dDevice device;
     87      if (device.Initialize(adapter)) {
     88        result.push_back(std::move(device));
     89      }
     90    } else if (error.Error() == DXGI_ERROR_NOT_FOUND) {
     91      break;
     92    } else {
     93      RTC_LOG(LS_WARNING)
     94          << "IDXGIFactory1::EnumAdapters returned an unexpected error: "
     95          << desktop_capture::utils::ComErrorToString(error);
     96    }
     97  }
     98  return result;
     99 }
    100 
    101 }  // namespace webrtc