No..I think that i did't descripe the question clear.
Around Java Media Framework,there are some important concepts,such as Time, DataSource,MediaEvent,Clock,Controller,Control.etc.And i want to ask that if the Control in the Java Media Framework only mean some GUI component?
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Liusu
No the Control interface is something you would use to configure your processor/player/datasource
There is a whole family of sub-interfaces - TrackControl is one that most people will use - from this you can determine what formats a DataSource supports & set what you want your output to be
Some Controls won't be available to your App until you've got a Realized Player/Processor
Others may be available when in the Configured state - but become fixed (to your output settings) after that
You will need to read the JavaDocs on each Control that you're interested in to determine what you might want to do with it