org.mobicents.media.server.impl.rtp
Class JitterBuffer

java.lang.Object
  org.mobicents.media.server.impl.rtp.JitterBuffer

All Implemented Interfaces:

java.io.Serializable

public class JitterBuffer
extends java.lang.Object
implements java.io.Serializable

Implements jitter buffer. A jitter buffer temporarily stores arriving packets in order to minimize delay variations. If packets arrive too late then they are discarded. A jitter buffer may be mis-configured and be either too large or too small. If a jitter buffer is too small then an excessive number of packets may be discarded, which can lead to call quality degradation. If a jitter buffer is too large then the additional delay can lead to conversational difficulty. A typical jitter buffer configuration is 30mS to 50mS in size. In the case of an adaptive jitter buffer then the maximum size may be set to 100-200mS. Note that if the jitter buffer size exceeds 100mS then the additional delay introduced can lead to conversational difficulty.

Author:

Oleg Kulikov, amit bhayani

See Also:

Serialized Form

Constructor Summary

JitterBuffer(int jitter, int period, java.util.Map<java.lang.Integer,org.mobicents.media.Format> rtpMap)
Creates new instance of jitter.

Method Summary

int	getJitter()
org.mobicents.media.Buffer	read()
void	reset()
void	setPeriod(int period)
void	write(byte[] data, int offset, int len)

Methods inherited from class java.lang.Object

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

Constructor Detail

JitterBuffer

public JitterBuffer(int jitter,
                    int period,
                    java.util.Map<java.lang.Integer,org.mobicents.media.Format> rtpMap)

Creates new instance of jitter.

Parameters:

fmt - the format of the received media

jitter - the size of the jitter in milliseconds.

Method Detail

getJitter

public int getJitter()

setPeriod

public void setPeriod(int period)

write

public void write(byte[] data,
                  int offset,
                  int len)

reset

public void reset()

read

public org.mobicents.media.Buffer read()