// sidebandaudio.h

// CTL_CODE(0x0022, 0x00b, METHOD_NEITHER, FILE_ANY_ACCESS)
#define IOCTL_SBAUD_GET_SIDETONE_VOLUMEPROPERTYVALUES 0x0022002F
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Windows Driver Kit DDI reference (ni-sidebandaudio-ioctl_sbaud_get_sidetone_volumepropertyvalues)

IOCTL_SBAUD_GET_SIDETONE_VOLUMEPROPERTYVALUES IOCTL

Description

The IOCTL_SBAUD_GET_SIDETONE_VOLUMEPROPERTYVALUES IOCTL gets the sidetone volume property values of the sideband specified audio endpoint.

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 0 based endpoint index value based on the number of Audio endpoints as reported by the IOCTL_SBAUD_GET_DEVICE_DESCRIPTOR.

This is a ULONG value from 0 to (N-1) where N is the number of Endpoints for the device.

Input buffer length

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_GET_SIDETONE_VOLUMEPROPERTYVALUES - NtDoc