32#define KeSaveFloatingPointState(x) ((void)(x), STATUS_SUCCESS)
33#define KeRestoreFloatingPointState(x) ((void)0)
struct KMIXER_DEVICE_EXT * PKMIXER_DEVICE_EXT
NTSTATUS CreatePin(IN PIRP Irp)
struct SUM_NODE_CONTEXT * PSUM_NODE_CONTEXT
NTSTATUS NTAPI KMixAllocateDeviceHeader(IN PKMIXER_DEVICE_EXT DeviceExtension)
KSDEVICE_HEADER KsDeviceHeader