VideoPortUnlockBuffer function (video.h)

The VideoPortUnLockBuffer function unlocks physical pages described by the specified memory descriptor list (MDL).

Syntax

VIDEOPORT_DEPRECATED VIDEOPORT_API VOID VideoPortUnlockBuffer(
  [in] IN PVOID HwDeviceExtension,
  [in] IN PVOID Mdl
);

[in] HwDeviceExtension

Pointer to the miniport driver's device extension.

[in] Mdl

Pointer to the MDL of the buffer to be released. This parameter should be the same pointer that was returned by VideoPortLockBuffer.

None

Requirement	Value
Minimum supported client	Available in Windows XP and later versions of the Windows operating systems.
Target Platform	Desktop
Header	video.h (include Video.h)
Library	Videoprt.lib
DLL	Videoprt.sys
IRQL	<= DISPATCH_LEVEL