Audio Endpoint Properties
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Audio Endpoint Properties
Header file Mmdeviceapi.h defines several properties of audio endpoint devices in Windows Vista. The Windows audio service sets the values of these properties. Clients can read these properties, but should not set them.
This section describes only properties that apply exclusively to audio endpoint devices. The core audio APIs support additional properties that do not apply exclusively to audio endpoint devices. For more information about these additional properties, see Device Properties.
Property values are stored as PROPVARIANT structures. For information about PROPVARIANT, see the Windows SDK documentation.
For information about accessing the properties of an audio endpoint device through the device's IMMDevice interface, see Device Properties. For code examples that show how to access the properties of an audio endpoint device, see the following topics:
The following properties are specific to audio endpoint devices.
| Property | Description |
| PKEY_AudioEndpoint_Association | Associates a kernel-streaming (KS) pin category with an audio endpoint device. |
| PKEY_AudioEndpoint_ControlPanelPageProvider | Specifies the CLSID of the registered provider of the device-properties extension for the audio endpoint device. |
| PKEY_AudioEndpoint_Disable_SysFx | Indicates whether system effects are enabled in the shared-mode stream that flows to or from the audio endpoint device. |
| PKEY_AudioEndpoint_FormFactor | Indicates the physical attributes of the audio endpoint device. |
| PKEY_AudioEndpoint_FullRangeSpeakers | Specifies the channel-configuration mask for the full-range speakers that are connected to the audio endpoint device. |
| PKEY_AudioEndpoint_GUID | Supplies the DirectSound device identifier that corresponds to the audio endpoint device. |
| PKEY_AudioEndpoint_PhysicalSpeakers | Defines the physical speaker configuration for the audio endpoint device. |
| PKEY_AudioEngine_DeviceFormat | Specifies the device format, which is the format that the audio engine uses for the shared-mode stream that flows to or from the audio endpoint device. |
See Also
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