IMFVideoMixerBitmap::GetAlphaBitmapParameters method

Retrieves the current settings that the enhanced video renderer (EVR) uses to alpha-blend the bitmap with the video.

Syntax


HRESULT GetAlphaBitmapParameters(
  [out] MFVideoAlphaBitmapParams *pBmpParms
);

Parameters

pBmpParms [out]

Pointer to an MFVideoAlphaBitmapParams structure that receives the current blending parameters.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return codeDescription
S_OK

The method succeeded.

MF_E_NOT_INITIALIZED

No bitmap is currently set. You must call IMFVideoMixerBitmap::SetAlphaBitmap to set a bitmap.

 

Remarks

This method returns the current values of all the blending parameters, not just those that the application specified. Ignore the dwFlags member of the structure.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

Evr9.h

Library

Strmiids.lib

See also

IMFVideoMixerBitmap
Enhanced Video Renderer

 

 

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