IN NTSTATUS Status,
IN ULONG Length);
+NTSTATUS
+WdmAudOpenSysAudioDevice(
+ IN LPWSTR DeviceName,
+ OUT PHANDLE Handle);
+
+NTSTATUS
+FindProductName(
+ IN LPWSTR PnpName,
+ IN ULONG ProductNameSize,
+ OUT LPWSTR ProductName);
+
+NTSTATUS
+WdmAudMixerCapabilities(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PWDMAUD_DEVICE_INFO DeviceInfo,
+ IN PWDMAUD_CLIENT ClientInfo);
+
#endif