[DllImportAttribute("xVideo", EntryPoint = "xVideo_GetAudioRenderers")]
public static int BASS_DSHOW_GetAudioRenderers(
	ENUMDEVICESPROC proc,
	IntPtr user
)

<DllImportAttribute("xVideo", EntryPoint := "xVideo_GetAudioRenderers">]
Public Shared Function BASS_DSHOW_GetAudioRenderers ( 
	proc As ENUMDEVICESPROC,
	user As IntPtr
) As Integer

Parameters

proc

Type: Un4seen.Bass.AddOn.DShowENUMDEVICESPROC
The user defined callback receiving the available audio render devices (see ENUMDEVICESPROC).

user

Type: SystemIntPtr
User instance data to pass to the callback function.

Return Value

When using as a proc callback value this will return the number of the audio render devices from the system only.

Another way to get the capture devices is by using the BASS_DSHOW_CallbackItemByIndex(BASSDSHOWCallbackItem, Int32) method.

Reference