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

java.lang.Object
  net.java.sip.communicator.impl.media.RTPConnectorOutputStream
      net.java.sip.communicator.impl.media.transform.TransformOutputStream

All Implemented Interfaces:

javax.media.rtp.OutputDataStream

public class TransformOutputStream
extends RTPConnectorOutputStream

TransformOutputStream implements OutputDataStream. It is use by RTPManager to send RTP/RTCP packet data out. In this implementation, UDP socket is used to send the data out. When a normal RTP/RTCP packet is passed down from RTPManager, we first transform the packet using user define PacketTransformer and then send it out through network to all the stream targets.

Author:

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

Field Summary

Fields inherited from class net.java.sip.communicator.impl.media.RTPConnectorOutputStream

targets

Constructor Summary

TransformOutputStream(DatagramSocket socket, PacketTransformer transformer)
Construct a TransformOutputStream based on the given UDP socket and PacketTransformer

Method Summary

protected RawPacket

createRawPacket(byte[] buffer, int offset, int length) Creates a new RawPacket from a specific byte[] buffer in order to have this instance send its packet data through its RTPConnectorOutputStream.write(byte[], int, int) method.

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

addTarget, removeTarget, removeTargets, write

Methods inherited from class java.lang.Object

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

Constructor Detail

TransformOutputStream

public TransformOutputStream(DatagramSocket socket,
                             PacketTransformer transformer)

Construct a TransformOutputStream based on the given UDP socket and PacketTransformer

Parameters:

socket - UDP socket used to send packet data out

transformer - PacketTransformer used to transform RTP/RTCP packets

Method Detail

createRawPacket

protected RawPacket createRawPacket(byte[] buffer,
                                    int offset,
                                    int length)

Description copied from class: RTPConnectorOutputStream

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

Overrides:

createRawPacket in class RTPConnectorOutputStream

Parameters:

buffer - the packet data to be sent to the targets of this instance

offset - the offset of the packet data in buffer

length - the length of the packet data in buffer

Returns:

a new RawPacket containing the packet data of the specified byte[] buffer or possibly its modification; null to ignore the packet data of the specified byte[] buffer and not send it to the targets of this instance through its RTPConnectorOutputStream.write(byte[], int, int) method