| // Copyright 2022 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_DISPLAY_WIN_AUDIO_EDID_SCAN_H_ |
| #define UI_DISPLAY_WIN_AUDIO_EDID_SCAN_H_ |
| |
| #include <stdint.h> |
| |
| #include "ui/display/display_export.h" |
| |
| namespace display { |
| namespace win { |
| |
| // The WMI service allows the querying of monitor-type devices which report |
| // Extended Display Identification Data (EDID). The WMI service can be |
| // queried for a list of COM objects which represent the "paths" which |
| // are associated with individual EDID devices. Querying each of those |
| // paths using the WmiGetMonitorRawEEdidV1Block method returns the EDID |
| // blocks for those devices. We query the extended blocks which contain |
| // the Short Audio Descriptor (SAD), and parse them to obtain a bitmask |
| // indicating which audio content is supported. The bitmask bits are |
| // defined in edid_parser.h, as returned from the EdidParser::audio_formats() |
| // method. If multiple EDID devices are present, the intersection is |
| // reported as the bitmask. |
| DISPLAY_EXPORT uint32_t ScanEdidBitstreams(); |
| |
| } // namespace win |
| } // namespace display |
| |
| #endif // UI_DISPLAY_WIN_AUDIO_EDID_SCAN_H_ |
