net.java.sip.communicator.impl.media.transform
Class TransformInputStream

java.lang.Object
  net.java.sip.communicator.impl.media.RTPConnectorInputStream
      net.java.sip.communicator.impl.media.transform.TransformInputStream

All Implemented Interfaces:

Runnable, javax.media.Controls, javax.media.protocol.PushSourceStream, javax.media.protocol.SourceStream

public class TransformInputStream
extends RTPConnectorInputStream

TransformInputStream implements PushSourceStream. It is used by RTPManager to receive RTP/RTCP packet datas. In this implementation, we use UDP sockets to receive RTP/RTCP. We listen on the address / port specified by local session address. When one packet is received, it is first reverse transformed through PacketTransformer defined by user. And then returned as normal RTP/RTCP packets to RTPManager.

Author:

Bing SU (nova.su@gmail.com), Lubomir Marinov

Field Summary

Fields inherited from interface javax.media.protocol.SourceStream

LENGTH_UNKNOWN

Constructor Summary

TransformInputStream(DatagramSocket socket, PacketTransformer transformer)
Construct a TransformInputStream based on the receiving socket and PacketTransformer

Method Summary

protected RawPacket

createRawPacket(DatagramPacket datagramPacket) Creates a new RawPacket from a specific DatagramPacket in order to have this instance receive its packet data through its RTPConnectorInputStream.read(byte[], int, int) method.

Methods inherited from class net.java.sip.communicator.impl.media.RTPConnectorInputStream

close, endOfStream, getContentDescriptor, getContentLength, getControl, getControls, getMinimumTransferSize, read, run, setTransferHandler

Methods inherited from class java.lang.Object

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

Constructor Detail

TransformInputStream

public TransformInputStream(DatagramSocket socket,
                            PacketTransformer transformer)

Construct a TransformInputStream based on the receiving socket and PacketTransformer

Parameters:

socket - data receiving socket

transformer - packet transformer used

Method Detail

createRawPacket

protected RawPacket createRawPacket(DatagramPacket datagramPacket)

Description copied from class: RTPConnectorInputStream

Creates a new RawPacket from a specific DatagramPacket in order to have this instance receive its packet data through its RTPConnectorInputStream.read(byte[], int, int) method. Allows extenders to intercept the packet data and possibly filter and/or modify it.

Overrides:

createRawPacket in class RTPConnectorInputStream

Parameters:

datagramPacket - the DatagramPacket containing the packet data

Returns:

a new RawPacket containing the packet data of the specified DatagramPacket or possibly its modification; null to ignore the packet data of the specified DatagramPacket and not make it available to this instance through its RTPConnectorInputStream.read(byte[], int, int) method