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IQualityControl interface

The IQualityControl interface provides support for quality control. An object exposes this interface if it can generate or receive quality-control messages. This includes renderer filters (which typically generate quality control messages), pins (which receive them), and external quality managers (which also receive them).

A renderer filter generates a quality-control message by calling the IQualityControl::Notify method on the output pin of the upstream filter. The upstream filter either handles the message or passes it upstream.

An application can implement its own quality-control manager. Call IQualityControl::SetSink on the renderer to designate the quality-control manager as the recipient for quality-control messages. Calling this method overrides the default handling of quality-control messages.

However, most applications will not implement their own quality-control managers; and aside from this special case, applications typically do not use this interface. For more information, see Quality-Control Management

Members

The IQualityControl interface inherits from the IUnknown interface. IQualityControl also has these types of members:

Methods

The IQualityControl interface has these methods.

MethodDescription
Notify

Notifies the recipient that a quality change is requested.

SetSink

Sets the IQualityControl object that will receive quality messages.

 

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Strmif.h (include Dshow.h)

Library

Strmiids.lib

 

 

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