IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY IOCTL

Description

Unmaps a video hardware frame buffer and video RAM from the virtual address space of the requester that was mapped by an IOCTL_VIDEO_SHARE_VIDEO_MEMORY request.

Parameters

Major code

Input buffer

The VRP InputBuffer contains a VIDEO_SHARE_MEMORY structure specifying the process and the virtual address where the video memory is mapped. The memory is unmapped by calling VideoPortUnmapMemory.

Input buffer length

Output buffer

None

Output buffer length

Input/output buffer

Input/output buffer length

Status block

The miniport driver does not set the Information member of the STATUS_BLOCK structure.

See also

IOCTL_VIDEO_SHARE_VIDEO_MEMORY

VIDEO_SHARE_MEMORY

VideoPortUnmapMemory