IMFTopologyServiceLookupClient::InitServicePointers method (evr.h)

Articolo
12/05/2018

[The component described on this page, Enhanced Video Renderer, is a legacy feature. It has been superseded by the Simple Video Renderer (SVR) exposed through the MediaPlayer and IMFMediaEngine components. To play video content you should send data into one of these components and allow them to instantiate the new video renderer. These components have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer or the lower level IMFMediaEngine APIs to play video media in Windows instead of the EVR, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Signals the mixer or presenter to query the enhanced video renderer (EVR) for interface pointers.

Syntax

HRESULT InitServicePointers(
  [in] IMFTopologyServiceLookup *pLookup
);

Parameters

[in] pLookup

Pointer to the IMFTopologyServiceLookup interface. To query the EVR for an interface, call IMFTopologyServiceLookup::LookupService.

Return value

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

Return code	Description
S_OK	The method succeeded.

Remarks

The IMFTopologyServiceLookup pointer is guaranteed to be valid only during the call to InitServicePointers. The mixer or presenter should not store a pointer to this interface after the method returns.

When the EVR calls IMFTopologyServiceLookupClient::ReleaseServicePointers, the mixer or presenter should release any pointers it obtained from the EVR.

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2008 [desktop apps only]
Target Platform	Windows
Header	evr.h
Library	Strmiids.lib

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