Package org.jitsi.impl.neomedia.transform

Class TransformUDPOutputStream

java.lang.Object

org.jitsi.impl.neomedia.RTPConnectorOutputStream

org.jitsi.impl.neomedia.RTPConnectorUDPOutputStream

org.jitsi.impl.neomedia.transform.TransformUDPOutputStream

All Implemented Interfaces:

javax.media.rtp.OutputDataStream, TransformOutputStream

public class TransformUDPOutputStream
extends RTPConnectorUDPOutputStream
implements TransformOutputStream

Extends RTPConnectorUDPOutputStream with transform logic. 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 org.jitsi.impl.neomedia.RTPConnectorOutputStream

PACKET_QUEUE_CAPACITY, POOL_CAPACITY, targets

Constructor Summary

Constructors

Constructor	Description
TransformUDPOutputStream(DatagramSocket socket)	Initializes a new TransformOutputStream which is to send packet data out through a specific UDP socket.

Method Summary

Modifier and Type	Method	Description
PacketTransformer	getTransformer()	Gets the PacketTransformer used by this instance to transform RawPackets.
protected RawPacket[]	packetize(byte[] buf, int off, int len, Object context)	Creates a RawPacket element from a specific byte[] buffer in order to have this instance send its packet data through its RTPConnectorOutputStream.write(byte[], int, int) method.
void	setTransformer(PacketTransformer transformer)	Sets the PacketTransformer to be used by this instance to transform RawPackets.

Methods inherited from class org.jitsi.impl.neomedia.RTPConnectorUDPOutputStream

doLogPacket, isSocketValid, sendToTarget

Methods inherited from class org.jitsi.impl.neomedia.RTPConnectorOutputStream

addTarget, close, getNumberOfBytesSent, getOutputBitrate, getOutputBitrate, getPacketLoggingService, logDroppedPacket, removeTarget, removeTargets, setEnabled, setMaxPacketsPerMillis, setPriority, syncWrite, write, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.media.rtp.OutputDataStream

write

Constructor Detail

TransformUDPOutputStream

public TransformUDPOutputStream(DatagramSocket socket)

Initializes a new TransformOutputStream which is to send packet data out through a specific UDP socket.

Parameters:

socket - the UDP socket used to send packet data out

Method Detail

getTransformer

public PacketTransformer getTransformer()

Gets the PacketTransformer used by this instance to transform RawPackets.

Specified by:

getTransformer in interface TransformOutputStream

Returns:

the PacketTransformer used by this instance to transform RawPackets

packetize

protected RawPacket[] packetize(byte[] buf,
                                int off,
                                int len,
                                Object context)

Creates a RawPacket element from a specific byte[] buffer in order to have this instance send its packet data through its RTPConnectorOutputStream.write(byte[], int, int) method. Returns an array of one or more elements, with the created RawPacket as its first element (and null for all other elements) Allows extenders to intercept the array and possibly filter and/or modify it. Transforms the array of RawPackets returned by the super packetize(byte[],int,int,Object) implementation using the associated PacketTransformer.

Overrides:

packetize in class RTPConnectorOutputStream

Parameters:

buf - the packet data to be sent to the targets of this instance. The contents of buf starting at off with the specified len is copied into the buffer of the returned RawPacket.

off - the offset of the packet data in buf

len - the length of the packet data in buf

context - the Object provided to RTPConnectorOutputStream.write(byte[], int, int, java.lang.Object). The implementation of RTPConnectorOutputStream ignores the context.

Returns:

an array with a single RawPacket containing the packet data of the specified byte[] buffer.

setTransformer

public void setTransformer(PacketTransformer transformer)

Sets the PacketTransformer to be used by this instance to transform RawPackets.

Specified by:

setTransformer in interface TransformOutputStream

Parameters:

transformer - the PacketTransformer to be used by this instance to transform RawPackets