org.ocap.media
Class MediaPresentationEvaluationTrigger

java.lang.Object
  org.ocap.media.MediaPresentationEvaluationTrigger

public class MediaPresentationEvaluationTrigger
extends Object

This class represents possible reasons to trigger an evaluation that leads to the generation of an AlternativeMediaPresentationEvent or a NormalMediaPresentationEvent. An application which has a MonitorAppPermission("mediaAccess") can use predefined MediaPresentationEvaluationTrigger or define its own MediaPresentationEvaluationTrigger and indicate to the implementation that presentation conditions have changed through the MediaAccessConditionControl.

MANDATORY triggers: OCAP implementation SHALL be able to generate such trigger independently of the monitor application. A monitor application cannot generate such triggers exclusively.
OPTIONAL triggers: such triggers MAY be generated by the OCAP implementation. A monitor application can exclusively generate such triggers.

See Also:

MediaAccessHandler

Field Summary

static MediaPresentationEvaluationTrigger	CURRENT_PROGRAM_EVENT_CHANGED MediaPresentationEvaluationTrigger indicating that current program event has changed.
static MediaPresentationEvaluationTrigger	NEW_SELECTED_SERVICE MediaPresentationEvaluationTrigger indicating that a new service has been selected.
static MediaPresentationEvaluationTrigger	NEW_SELECTED_SERVICE_COMPONENTS MediaPresentationEvaluationTrigger indicating that new service components have been selected via JMF control or via ServiceContext.
static MediaPresentationEvaluationTrigger	PMT_CHANGED MediaPresentationEvaluationTrigger indicating that the broadcast PMT has changed.
static MediaPresentationEvaluationTrigger	POWER_STATE_CHANGED MediaPresentationEvaluationTrigger indicating that the power state has changed, e.g., switch to Software Standby.
static MediaPresentationEvaluationTrigger	PROGRAM_EVENT_RATING_CHANGED MediaPresentationEvaluationTrigger indicating that program event rating has changed.
static MediaPresentationEvaluationTrigger	RESOURCE_AVAILABILITY_CHANGED MediaPresentationEvaluationTrigger indicating that access to a resource has changed : lost or free resource.
static MediaPresentationEvaluationTrigger	USER_RATING_CHANGED MediaPresentationEvaluationTrigger indicating that the user preference for rating has been changed.

Constructor Summary

protected

MediaPresentationEvaluationTrigger() Constructs a MediaPresentationEvaluationTrigger.

Method Summary

boolean

isOptional() Returns true if the trigger can be generated either by the OCAP implementation or by the Monitor Application.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PMT_CHANGED

public static final MediaPresentationEvaluationTrigger PMT_CHANGED

MediaPresentationEvaluationTrigger indicating that the broadcast PMT has changed.
MANDATORY trigger

RESOURCE_AVAILABILITY_CHANGED

public static final MediaPresentationEvaluationTrigger RESOURCE_AVAILABILITY_CHANGED

MediaPresentationEvaluationTrigger indicating that access to a resource has changed : lost or free resource.
MANDATORY trigger

NEW_SELECTED_SERVICE

public static final MediaPresentationEvaluationTrigger NEW_SELECTED_SERVICE

MediaPresentationEvaluationTrigger indicating that a new service has been selected.
MANDATORY trigger

NEW_SELECTED_SERVICE_COMPONENTS

public static final MediaPresentationEvaluationTrigger NEW_SELECTED_SERVICE_COMPONENTS

MediaPresentationEvaluationTrigger indicating that new service components have been selected via JMF control or via ServiceContext.
MANDATORY trigger

POWER_STATE_CHANGED

public static final MediaPresentationEvaluationTrigger POWER_STATE_CHANGED

MediaPresentationEvaluationTrigger indicating that the power state has changed, e.g., switch to Software Standby.
OPTIONAL trigger

CURRENT_PROGRAM_EVENT_CHANGED

public static final MediaPresentationEvaluationTrigger CURRENT_PROGRAM_EVENT_CHANGED

MediaPresentationEvaluationTrigger indicating that current program event has changed.
OPTIONAL trigger

USER_RATING_CHANGED

public static final MediaPresentationEvaluationTrigger USER_RATING_CHANGED

MediaPresentationEvaluationTrigger indicating that the user preference for rating has been changed.
OPTIONAL trigger

PROGRAM_EVENT_RATING_CHANGED

public static final MediaPresentationEvaluationTrigger PROGRAM_EVENT_RATING_CHANGED

MediaPresentationEvaluationTrigger indicating that program event rating has changed.
OPTIONAL trigger

Constructor Detail

MediaPresentationEvaluationTrigger

protected MediaPresentationEvaluationTrigger()

Constructs a MediaPresentationEvaluationTrigger.

Method Detail

isOptional

public boolean isOptional()

Returns true if the trigger can be generated either by the OCAP implementation or by the Monitor Application. Returns false if the trigger is generated by the OCAP implementation.

Returns:

true if the trigger can be generated either by the implementation or by the Monitor Application.
false if the trigger is generated by the OCAP implementation.