IMFTopologyServiceLookupClient interface

Initializes a video mixer or presenter. This interface is implemented by mixers and presenters, and enables them to query the enhanced video renderer (EVR) for interface pointers.

Members

The IMFTopologyServiceLookupClient interface inherits from the IUnknown interface. IMFTopologyServiceLookupClient also has these types of members:

Methods

The IMFTopologyServiceLookupClient interface has these methods.

MethodDescription
InitServicePointers

Signals the mixer or presenter to query the EVR for interface pointers.

ReleaseServicePointers

Signals the mixer or presenter to release the interface pointers obtained from the EVR.

 

Remarks

When the EVR loads the video mixer and the video presenter, the EVR queries the object for this interface and calls InitServicePointers. Inside the InitServicePointers method, the object can query the EVR for interface pointers.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

Evr.h

Library

Strmiids.lib

See also

IMFTopologyServiceLookup
Media Foundation Interfaces
How to Write an EVR Presenter

 

 

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