org.dvb.dsmcc.NPTDiscontinuityEvent Maven / Gradle / Ivy
package org.dvb.dsmcc;
/**
* Sent when an MHP terminal detects a permanent discontinuity in NPT
* as defined in the main body of the present document. This represents an
* error condition in the incoming broadcast.
* This event shall be sent following a PCR discontinuity when the MHP
* terminal has enough information to determine that there will be an
* NPT discontinuity. If the NPTDiscontinuityEvent is because of invalid data in a new
* NPTReferenceDescriptor then the event will be generated when that
* new NPTReferenceDescriptor is detected by the MHP terminal. If the NPTDiscontinuityEvent
* is because no new NPTReferenceDescriptor is detected within the time
* allowed by the main body of the present document then it will be generated
* when that time interval has elapsed.
* @since MHP 1.0.1
*/
public class NPTDiscontinuityEvent extends NPTStatusEvent {
/**
* Construct an event. The before and after values
* used shall be the values at the time when the receiver determined that a
* NPT discontinuity has happened. If the NPTDiscontinuityEvent is because of invalid data in a
* new NPTReferenceDescriptor then this is the time when that new
* descriptor was known to be invalid. If NPTDiscontinuityEvent is because of the absence of
* a new NPTReferenceDescriptor then this will be when the MHP terminal
* detects that the time interval allowed by the present document for such
* new descriptors has elapsed. Where an NPT value is unknown or cannot be computed, -1 shall be used.
* @param source the stream whose NPT suffered a discontinuity
* @param before the last NPT value detected before the discontinuity
* @param after the first NPT value detected after the discontinuity
*/
public NPTDiscontinuityEvent( DSMCCStream source, long before, long after )
{super(source);}
/**
* Return the last known stable value of NPT before the discontinuity
* @return an NPT value
*/
public long getLastNPT() { return 0;}
/**
* Return the first known stable value of NPT after the discontinuity
* @return an NPT value
*/
public long getFirstNPT() { return 0;}
}