| 94 | } |
| 95 | |
| 96 | bool GetDisplayConfig(const wchar_t* displayName, DisplayConfig_t& displayConfig) |
| 97 | { |
| 98 | UINT32 num_paths; |
| 99 | UINT32 num_modes; |
| 100 | std::vector<DISPLAYCONFIG_PATH_INFO> paths; |
| 101 | std::vector<DISPLAYCONFIG_MODE_INFO> modes; |
| 102 | LONG res; |
| 103 | |
| 104 | // The display configuration could change between the call to |
| 105 | // GetDisplayConfigBufferSizes and the call to QueryDisplayConfig, so call |
| 106 | // them in a loop until the correct buffer size is chosen |
| 107 | do { |
| 108 | res = GetDisplayConfigBufferSizes(QDC_ONLY_ACTIVE_PATHS, &num_paths, &num_modes); |
| 109 | if (ERROR_SUCCESS == res) { |
| 110 | paths.resize(num_paths); |
| 111 | modes.resize(num_modes); |
| 112 | res = QueryDisplayConfig(QDC_ONLY_ACTIVE_PATHS, &num_paths, paths.data(), &num_modes, modes.data(), nullptr); |
| 113 | } |
| 114 | } while (ERROR_INSUFFICIENT_BUFFER == res); |
| 115 | |
| 116 | if (res == ERROR_SUCCESS) { |
| 117 | // num_paths and num_modes could decrease in a loop |
| 118 | paths.resize(num_paths); |
| 119 | modes.resize(num_modes); |
| 120 | |
| 121 | for (const auto& path : paths) { |
| 122 | // Send a GET_SOURCE_NAME request |
| 123 | DISPLAYCONFIG_SOURCE_DEVICE_NAME source = { |
| 124 | {DISPLAYCONFIG_DEVICE_INFO_GET_SOURCE_NAME, sizeof(source), path.sourceInfo.adapterId, path.sourceInfo.id}, {}, |
| 125 | }; |
| 126 | res = DisplayConfigGetDeviceInfo(&source.header); |
| 127 | if (ERROR_SUCCESS == res) { |
| 128 | if (wcscmp(displayName, source.viewGdiDeviceName) == 0) { |
| 129 | displayConfig = {}; |
| 130 | |
| 131 | if (path.sourceInfo.modeInfoIdx != DISPLAYCONFIG_PATH_MODE_IDX_INVALID) { |
| 132 | const auto& mode = modes[path.sourceInfo.modeInfoIdx]; |
| 133 | if (mode.infoType == DISPLAYCONFIG_MODE_INFO_TYPE_SOURCE) { |
| 134 | displayConfig.width = mode.sourceMode.width;; |
| 135 | displayConfig.height = mode.sourceMode.height; |
| 136 | } |
| 137 | } |
| 138 | if (path.targetInfo.modeInfoIdx != DISPLAYCONFIG_PATH_MODE_IDX_INVALID) { |
| 139 | const auto& mode = modes[path.targetInfo.modeInfoIdx]; |
| 140 | if (mode.infoType == DISPLAYCONFIG_MODE_INFO_TYPE_TARGET) { |
| 141 | displayConfig.refreshRate = mode.targetMode.targetVideoSignalInfo.vSyncFreq; |
| 142 | displayConfig.scanLineOrdering = mode.targetMode.targetVideoSignalInfo.scanLineOrdering; |
| 143 | } |
| 144 | displayConfig.modeTarget = mode; |
| 145 | |
| 146 | if (IsWindows11_24H2OrGreater()) { |
| 147 | DISPLAYCONFIG_GET_ADVANCED_COLOR_INFO_2 color_info = { |
| 148 | {static_cast<DISPLAYCONFIG_DEVICE_INFO_TYPE>(DISPLAYCONFIG_DEVICE_INFO_GET_ADVANCED_COLOR_INFO_2), |
| 149 | sizeof(color_info), mode.adapterId, mode.id}, {} |
| 150 | }; |
| 151 | res = DisplayConfigGetDeviceInfo(&color_info.header); |
| 152 | if (ERROR_SUCCESS == res) { |
| 153 | displayConfig.colorEncoding = color_info.colorEncoding; |
no test coverage detected