diff options
Diffstat (limited to 'chromium/media/audio/win/core_audio_util_win.h')
| -rw-r--r-- | chromium/media/audio/win/core_audio_util_win.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/chromium/media/audio/win/core_audio_util_win.h b/chromium/media/audio/win/core_audio_util_win.h index 3b2734570d0..cdf6dfb11df 100644 --- a/chromium/media/audio/win/core_audio_util_win.h +++ b/chromium/media/audio/win/core_audio_util_win.h @@ -59,6 +59,10 @@ class MEDIA_EXPORT CoreAudioUtil { static ScopedComPtr<IMMDevice> CreateDefaultDevice( EDataFlow data_flow, ERole role); + // Returns the device id of the default output device or an empty string + // if no such device exists or if the default device has been disabled. + static std::string GetDefaultOutputDeviceID(); + // Creates an endpoint device that is specified by a unique endpoint device- // identification string. static ScopedComPtr<IMMDevice> CreateDevice(const std::string& device_id); @@ -68,6 +72,24 @@ class MEDIA_EXPORT CoreAudioUtil { // "Microphone (Realtek High Definition Audio)". static HRESULT GetDeviceName(IMMDevice* device, AudioDeviceName* name); + // Returns the device ID/path of the controller (a.k.a. physical device that + // |device| is connected to. This ID will be the same for all devices from + // the same controller so it is useful for doing things like determining + // whether a set of output and input devices belong to the same controller. + // The device enumerator is required as well as the device itself since + // looking at the device topology is required and we need to open up + // associated devices to determine the controller id. + // If the ID could not be determined for some reason, an empty string is + // returned. + static std::string GetAudioControllerID(IMMDevice* device, + IMMDeviceEnumerator* enumerator); + + // Accepts an id of an input device and finds a matching output device id. + // If the associated hardware does not have an audio output device (e.g. + // a webcam with a mic), an empty string is returned. + static std::string GetMatchingOutputDeviceID( + const std::string& input_device_id); + // Gets the user-friendly name of the endpoint device which is represented // by a unique id in |device_id|. static std::string GetFriendlyName(const std::string& device_id); |