IAMMultiMediaStream::Render 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 Render method renders the current filter graph.

Syntax

HRESULT Render(
  [in] DWORD dwFlags
);

Parameters

[in] dwFlags

Value that specifies how the filter graph renders the current multimedia stream. This value currently must be AMMSF_NOCLOCK.

Return value

Returns S_OK if successful or E_INVALIDARG if the dwFlags parameter is invalid.

Remarks

This method renders each of the source streams for a stream of type STREAMTYPE_WRITE. This can be called several times, for instance, each time a source stream is added, the stream is not set into running mode. Use the IMultiMediaStream::SetState method to set the stream into running mode after calling this method.

The AMMSF_RENDERALLSTREAMS flag will create default rendering streams for video and audio if they do not exist.

Requirements

Requirement	Value
Target Platform	Windows
Header	amstream.h

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