IMFVideoPresenter::GetCurrentMediaType method (evr.h)

项目
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 It has been superseded by the Simple Video Renderer (SVR) exposed through the MediaPlayer and IMFMediaEngine components.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.]

Retrieves the presenter's media type.

Syntax

HRESULT GetCurrentMediaType(
  [out] IMFVideoMediaType **ppMediaType
);

Parameters

[out] ppMediaType

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

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.
MF_E_NOT_INITIALIZED	The media type is not set.
MF_E_SHUTDOWN	The video renderer has been shut down

Remarks

This method returns the media type that the presenter sets for the mixer's output type. It describes the format of the composited image.

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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