IAMMultiMediaStream::GetFilterGraph method (amstream.h)

Статья
4/26/2023

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Note This interface is deprecated. New applications should not use it.

The GetFilterGraph method retrieves the Filter Graph Manager that is managed by the multimedia stream object.

Syntax

HRESULT GetFilterGraph(
  [out] IGraphBuilder **ppGraphBuilder
);

Parameters

[out] ppGraphBuilder

Address of a variable that receives an IGraphBuilder interface pointer. If there is no filter graph associated with the multimedia stream object, the returned pointer is NULL.

Return value

Returns an HRESULT value. Possible values include the following.

Return code	Description
E_POINTER	NULL pointer argument.
S_OK	Success.

Remarks

If the method succeeds and *ppGraphBuilder is non-NULL, the caller must release the IGraphBuilder pointer.

Requirements

Requirement	Value
Target Platform	Windows
Header	amstream.h

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