SoundGetBusNumber

NTSTATUS
    SoundGetBusNumber(
        IN OUT INTERFACE_TYPE
InterfaceType,
        OUT PULONG
BusNumber
);

The SoundGetBusNumber function returns the number of the first bus of the specified bus type.

Parameters
InterfaceType
Type of bus for which to search. INTERFACE_TYPE is defined in ntddk.h.
BusNumber
Address of location to receive the bus number, if found.
Return Value

Returns STATUS_SUCCESS if successful. Otherwise returns STATUS_DEVICE_DOES_NOT_EXIST.