PFND3DDDI_VIDEOPROCESSBEGINFRAME callback function (d3dumddi.h)
The VideoProcessBeginFrame function notifies the user-mode display driver that processing of a video frame can begin on the specified Microsoft DirectX Video Accelerator (VA) video processing device.
Syntax
PFND3DDDI_VIDEOPROCESSBEGINFRAME Pfnd3dddiVideoprocessbeginframe;
HRESULT Pfnd3dddiVideoprocessbeginframe(
HANDLE hDevice,
[in] HANDLE hVideoProcess
)
{...}
Parameters
hDevice
A handle to the display device (graphics context).
[in] hVideoProcess
The handle to the DirectX VA video processing device that should start processing the video frame. The CreateVideoProcessDevice function created this handle.
Return value
VideoProcessBeginFrame returns one of the following values:
| Return code | Description |
|---|---|
| S_OK | Video frame processing successfully began. |
| E_OUTOFMEMORY | VideoProcessBeginFrame could not allocate the required memory for it to complete. |
Remarks
The VideoProcessBeginFrame function notifies the user-mode display driver that its VideoProcessBlt function can be called on the specified video processing device.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows Vista and later versions of the Windows operating systems. |
| Target Platform | Desktop |
| Header | d3dumddi.h (include D3dumddi.h) |