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IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY control code

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.

Input Parameters

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.

Output Parameters

None

I/O Status Block

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

Requirements

Header

Ntddvdeo.h (include Ntddvdeo.h)

See also

IOCTL_VIDEO_SHARE_VIDEO_MEMORY
VIDEO_SHARE_MEMORY
VideoPortUnmapMemory

 

 

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