IAMVideoAcceleratorNotify::GetUncompSurfacesInfo method

The GetUncompSurfacesInfo method queries the decoder for the number of uncompressed surfaces to allocate and the pixel format.

Syntax

HRESULT GetUncompSurfacesInfo(
  const GUID             *pGuid,
  LPAMVAUncompBufferInfo pUncompBufferInfo
);

Parameters

pGuid

Pointer to a GUID that specifies the DXVA profile in use.

pUncompBufferInfo

Pointer to a AMVAUncompBufferInfo structure. The decoder fills in this structure with the decoder's requirements for the minimum and maximum number of surfaces and the pixel format.

To get the list of supported pixel formats, the decoder should call IAMVideoAccelerator::GetUncompFormatsSupported.

Return value

Returns an HRESULT value that depends on the implementation of the interface. HRESULT can include one of the following standard constants, or other values not listed.

Return code Description
E_FAIL
Failure.
E_INVALIDARG
Argument is invalid.
E_NOTIMPL
Method is not supported.
E_POINTER
NULL pointer argument.
S_OK
Success.

Remarks

After the video renderer allocates the uncompressed surfaces, it calls the decoder's IAMVideoAcceleratorNotify::SetUncompSurfacesInfo method.

Requirements

   
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header videoacc.h
Library Strmiids.lib

See also

Error and Success Codes

How Decoders Use IAMVideoAccelerator

IAMVideoAcceleratorNotify Interface