// sidebandaudio.h

// CTL_CODE(0x0022, 0x006, METHOD_NEITHER, FILE_ANY_ACCESS)
#define IOCTL_SBAUD_SET_VOLUME 0x0022001B
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Windows Driver Kit DDI reference (ni-sidebandaudio-ioctl_sbaud_set_volume)

IOCTL_SBAUD_SET_VOLUME IOCTL

Description

The IOCTL_SBAUD_SET_VOLUME IOCTL is used to set the volume on a specific channel. This control code is used by an audio driver when cooperating with the audio class drivers to operate a sideband connection.

Parameters

Major code

IRP_MJ_DEVICE_CONTROL

Input buffer

A SIDEBANDAUDIO_VOLUME_PARAMS structure that describes the volume level and the channel that the volume will be set.

Input buffer length

The size of the SIDEBANDAUDIO_VOLUME_PARAMS structure.

Output buffer

Output buffer length

Input/output buffer

Input/output buffer length

Status block

Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful. Otherwise, Status to the appropriate error condition as a NTSTATUS code. For more information, see NTSTATUS Values.

Remarks

This IOCTL can only be called from kernel mode.

Requirements


Header	sidebandaudio.h

IOCTL_SBAUD_SET_VOLUME - NtDoc