CVideoTransformFilter::AlterQuality

  • Article

Receives a quality-control notification and provides an opportunity to alter the quality of the media stream.

virtual HRESULT AlterQuality(
  Quality q 
);

Parameters

  • q
    Quality-control notification message.

Return Values

This member function returns E_FAIL by default.

Remarks

This member function overrides the CTransformFilter::AlterQuality member function. It is called by the CTransformOutputPin::Notify member function before calling the CBaseInputPin::PassNotify member function to pass the quality control message upstream. This function sets the m_itrLate data member to the value Quality structure's Late member so that the filter can determine whether to skip frames. It returns E_FAIL so that the renderer downstream will continue to handle quality control.

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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Last updated on Wednesday, April 13, 2005

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