IOCTL_SBAUD_GET_SUPPORTED_FORMATS IOCTL

Description

The audio driver issues the IOCTL_SBAUD_GET_SUPPORTED_FORMATS control code to get information about the stream formats supported by sideband audio endpoint.

Parameters

Major code

IRP_MJ_DEVICE_CONTROL

Input buffer

SIDEBANDAUDIO_SUPPORTED_FORMATS containing endpoint index, and array of formats supported by the Audio driver.

Input buffer length

Size of SIDEBANDAUDIO_SUPPORTED_FORMATS including storage for array of formats.

Output buffer

SIDEBANDAUDIO_SUPPORTED_FORMATS. The sideband driver will return the intersection of the sideband audio formats with the formats supplied by the audio driver as an input parameter.

Output buffer length

Size of SIDEBANDAUDIO_SUPPORTED_FORMATS including storage for array of formats.

Input/output buffer

Input/output buffer length

Status block

If the routine succeeds, then Status is set to STATUS_SUCCESS and the Information member is the number of bytes that the routine writes to the output buffer.

If Status is set to STATUS_BUFFER_TOO_SMALL, then the audio driver should read the Information member to get the size of the buffer that the caller should allocate for this request.

Remarks

This IOCTL can only be called from kernel mode.

Requirements

See also

SIDEBANDAUDIO_SUPPORTED_FORMATS

Introduction to I/O Control Codes

sidebandaudio.h