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IEVRTrustedVideoPlugin::CanConstrict method

Queries whether the plug-in can limit the effective video resolution.

Syntax


HRESULT CanConstrict(
  [out]  BOOL *pYes
);

Parameters

pYes [out]

Receives a Boolean value. If TRUE, the plug-in can limit the effective video resolution. Otherwise, the plug-in cannot limit the video resolution. If the method fails, the EVR treats the value as FALSE (not supported).

Return value

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

Return codeDescription
S_OK

The method succeeded.

 

Remarks

Constriction is a protection mechanism that limits the effective resolution of the video frame to a specified maximum number of pixels.

Video constriction can be implemented by either the mixer or the presenter.

If the method returns TRUE, the EVR might call IEVRTrustedVideoPlugin::SetConstriction at any time.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

Evr.h

Library

Mfuuid.lib

See also

Enhanced Video Renderer
Protected Media Path
IEVRTrustedVideoPlugin

 

 

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