org.ocap.media.AlternativeMediaPresentationEvent Maven / Gradle / Ivy
package org.ocap.media;
import javax.media.Controller;
import org.davic.mpeg.ElementaryStream;
/**
* AlternativeMediaPresentationEvent is a JMF event generated
* to indicate that an "alternative" content is presented during the media
* presentation of a service.
* Alternative content is defined as content that is not actually part of
* the service.
*
* AlternativeMediaPresentationEvent notification is generated :
*
When alternative media content presentation begins;
* During the presentation of a service, if any of the service components
* presented are replaced by alternative content;
* During the presentation of a service, if an alternative media content was
* presented and an evaluation leads to a new alternative media content
* presentation.
*/
public abstract class AlternativeMediaPresentationEvent extends MediaPresentationEvent
implements NotPresentedMediaInterface {
/**
* Constructor of MediaPresentationEvent
* @see MediaPresentationEvent
*/
protected AlternativeMediaPresentationEvent(Controller from, int previous, int current, int target){
super(from,previous,current,target);
}
/**
* @return Returns the subset of explicitly (by Application request) or
* implicitly (by the Player itself) service components that were selected and which
* presentation was not possible.
*/
public ElementaryStream[] getNotPresentedStreams(){
return null;
}
/**
* @return Returns a bit mask of reasons that lead to the non presentation of
* the given service component. The reasons are defined
* in {@link AlternativeMediaPresentationReason})interface.
* @param es a not presented service component.
*/
public int getReason(ElementaryStream es){
return 0;
}
}