// sidebandaudio.h

typedef union {
  struct {
    GUID  ParamSet;
    ULONG TypeId;
    ULONG Size;
  };
  LONGLONG Alignment;
} SIDEBANDAUDIO_IO_PARAM_HEADER, *PSIDEBANDAUDIO_IO_PARAM_HEADER;
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Windows Driver Kit DDI reference (ns-sidebandaudio-sidebandaudio_io_param_header)

SIDEBANDAUDIO_IO_PARAM_HEADER structure

Description

The SIDEBANDAUDIO_IO_PARAM_HEADER structure describes the size and type of the IO parameter.

Members

`ParamSet`

Parameter Set - This could be Microsoft Standard set or IHV defined.

`TypeId`

Type of parameter.

`Size`

Size in bytes of Parameter. In case of IOCTL_SBAUD_GET_SIOPxxx Size will indicate size of any extra input parameter.

`Alignment`

Allows for byte alignment.

Remarks

Requirements


Header	sidebandaudio.h

SIDEBANDAUDIO_IO_PARAM_HEADER - NtDoc