// ntddvdeo.h

// CTL_CODE(0x0023, 0x008, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_VIDEO_HANDLE_VIDEOPARAMETERS 0x00230020
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Windows Driver Kit DDI reference (ni-ntddvdeo-ioctl_video_handle_videoparameters)

IOCTL_VIDEO_HANDLE_VIDEOPARAMETERS IOCTL

Description

Gets the capabilities of the device's television connector and/or copy protection hardware, or sets the desired functionality on the copy protection hardware. Adapters that support TV connectors should provide support for this modal IOCTL. See TV Connector and Copy Protection Support in Video Miniport Drivers for details.

Parameters

Major code

Input buffer

The VRP InputBuffer contains a VIDEOPARAMETERS structure that describes the action to be performed by the miniport driver.

Input buffer length

Output buffer

The miniport driver returns the VIDEOPARAMETERS structure in the VRP OutputBuffer.

Output buffer length

Input/output buffer

Input/output buffer length

Status block

If the miniport driver successfully gets or sets the requested information, it sets the Information member of the VRP's STATUS_BLOCK to sizeof(VIDEOPARAMETERS); otherwise, the miniport driver sets this member to zero.

IOCTL_VIDEO_HANDLE_VIDEOPARAMETERS - NtDoc