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<  *
---
>  * Copyright (C) 2007 Motorola
>  * 
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> /**
>  * Date           Author          Comment
>  * 19/09/07       Motorola        add preroll_extesion
>  *
>  */
> 
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>   /*< protected >*/ /* extension */
>   /* preroll extension: TRUE, not use preroll_queue, use video device queue */
>   gboolean       preroll_extension;
> 
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>   /* notify subclass of preroll buffer */
>   GstFlowReturn (*queue_preroll) (GstBaseSink *sink, GstBuffer *buffer);
> 
