net.java.sip.communicator.impl.media.transform.srtp
Class SRTPTransformer

java.lang.Object
  net.java.sip.communicator.impl.media.transform.srtp.SRTPTransformer

All Implemented Interfaces:

PacketTransformer

public class SRTPTransformer
extends Object
implements PacketTransformer

SRTPTransformer implements PacketTransformer and provides implementations for RTP packet to SRTP packet transformation and SRTP packet to RTP packet transformation logic. It will first find the corresponding SRTPCryptoContext for each packet based on their SSRC and then invoke the context object to perform the transformation and reverse transformation operation.

Author:

Bing SU (nova.su@gmail.com)

Constructor Summary

SRTPTransformer(SRTPTransformEngine engine)
Construct a SRTPTransformer

Method Summary

SRTPTransformEngine	getEngine() Getter to use in derived classes.
RawPacket	reverseTransform(RawPacket pkt) Reverse transform a packet (transform a transformed packet back)
RawPacket	transform(RawPacket pkt) Transform a packet.

Methods inherited from class java.lang.Object

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

Constructor Detail

SRTPTransformer

public SRTPTransformer(SRTPTransformEngine engine)

Construct a SRTPTransformer

Parameters:

engine - the SRTPTransformEngine we are using

Method Detail

transform

public RawPacket transform(RawPacket pkt)

Description copied from interface: PacketTransformer

Transform a packet.

Specified by:

transform in interface PacketTransformer

Parameters:

pkt - The packet to be transformed

Returns:

Transformed packet

reverseTransform

public RawPacket reverseTransform(RawPacket pkt)

Description copied from interface: PacketTransformer

Reverse transform a packet (transform a transformed packet back)

Specified by:

reverseTransform in interface PacketTransformer

Parameters:

pkt - The transformed packet to be restored

Returns:

Restored packet

getEngine

public SRTPTransformEngine getEngine()

Getter to use in derived classes. (Could modify the member variable to protected instead for direct access)

Returns:

the engine