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PFND3DDDI_DECODEBEGINFRAME callback function (d3dumddi.h)

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The DecodeBeginFrame function notifies the user-mode display driver that decoding can begin on the specified Microsoft DirectX Video Accelerator (VA) decode device.

Syntax

PFND3DDDI_DECODEBEGINFRAME Pfnd3dddiDecodebeginframe;

HRESULT Pfnd3dddiDecodebeginframe(
  HANDLE hDevice,
  D3DDDIARG_DECODEBEGINFRAME *unnamedParam2
)
{...}

Parameters

hDevice

A handle to the display device (graphics context).

unnamedParam2

pData [in]

A pointer to a D3DDDIARG_DECODEBEGINFRAME structure that describes information for the DirectX VA decoder to start decoding a frame.

Return value

DecodeBeginFrame returns one of the following values:

Return code Description
S_OK Decoding successfully began.
E_OUTOFMEMORY DecodeBeginFrame could not allocate the required memory for it to complete.

Remarks

The DecodeBeginFrame function notifies the user-mode display driver that its DecodeExecute function can be called on the specified decode 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)

See also

D3DDDIARG_DECODEBEGINFRAME

D3DDDI_DEVICEFUNCS

DecodeExecute