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MFCreateVideoMixer callback function (evr.h)

  • Artículo
  • Tiempo de lectura: 2 minutos

Creates the default video mixer for the enhanced video renderer (EVR).

Syntax

MFCreateVideoMixer Mfcreatevideomixer;

EVRPUBLIC Mfcreatevideomixer(
  IUnknown *pOwner,
  REFIID riidDevice,
  REFIID riid,
  void **ppv
)
{...}

Parameters

pOwner

Pointer to the owner of this object. If the object is aggregated, pass a pointer to the aggregating object's IUnknown interface. Otherwise, set this parameter to NULL.

riidDevice

Interface identifier (IID) of the video device interface that will be used for processing the video. Currently the only supported value is IID_IDirect3DDevice9.

riid

IID of the requested interface on the video mixer. The video mixer exposes the IMFTransform interface.

ppv

Receives a pointer to the requested interface. The caller must release the interface.

Return value

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

Return code Description
S_OK
 The function succeeded.

Requirements

   
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Target Platform Windows
Header evr.h

See also

Enhanced Video Renderer

Media Foundation Functions