Package org.jitsi.impl.neomedia.transform

Class SinglePacketTransformer

java.lang.Object

org.jitsi.impl.neomedia.transform.SinglePacketTransformer

All Implemented Interfaces:

PacketTransformer

Direct Known Subclasses:

CsrcTransformEngine, DtmfTransformEngine, SinglePacketTransformerAdapter, SRTCPTransformer, SRTPTransformer, StatisticsEngine, ZRTCPTransformer, ZRTPTransformEngine

public abstract class SinglePacketTransformer
extends Object
implements PacketTransformer

Extends the PacketTransformer interface with methods which allow the transformation of a single packet into a single packet. Eases the implementation of PacketTransformer-s which transform each packet into a single transformed packet (as opposed to an array of possibly more than one packet).

Author:

Boris Grozev, George Politis

Constructor Summary

Constructors

Constructor	Description
SinglePacketTransformer()	Ctor.
SinglePacketTransformer(Predicate<org.jitsi.utils.ByteArrayBuffer> packetPredicate)	Ctor.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes this PacketTransformer i.e.
abstract RawPacket	reverseTransform(RawPacket pkt)	Reverse-transforms a specific packet.
RawPacket[]	reverseTransform(RawPacket[] pkts)	Reverse-transforms each packet in an array of packets.
abstract RawPacket	transform(RawPacket pkt)	Transforms a specific packet.
RawPacket[]	transform(RawPacket[] pkts)	Transforms each packet in an array of packets.

Methods inherited from class java.lang.Object

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

Constructor Detail

SinglePacketTransformer

public SinglePacketTransformer()

Ctor. XXX At some point ideally we would get rid of this ctor and all the inheritors will use the parametrized ctor. Also, we might want to move this check inside the TransformEngineChain so that we only make the check once per packet: The RTCP transformer is only supposed to (reverse) transform RTCP packets and the RTP transformer is only supposed to modify RTP packets.

SinglePacketTransformer

public SinglePacketTransformer(Predicate<org.jitsi.utils.ByteArrayBuffer> packetPredicate)

Ctor.

Parameters:

packetPredicate - the PacketPredicate to use to match packets to (reverse) transform.

Method Detail

close

public void close()

Closes this PacketTransformer i.e. releases the resources allocated by it and prepares it for garbage collection. The (default) implementation of SinglePacketTransformer does nothing.

Specified by:

close in interface PacketTransformer

reverseTransform

public abstract RawPacket reverseTransform(RawPacket pkt)

Reverse-transforms a specific packet.

Parameters:

pkt - the transformed packet to be restored.

Returns:

the restored packet.

reverseTransform

public RawPacket[] reverseTransform(RawPacket[] pkts)

Reverse-transforms each packet in an array of packets. Null values must be ignored. Reverse-transforms an array of packets by calling reverseTransform(RawPacket) on each one.

Specified by:

reverseTransform in interface PacketTransformer

Parameters:

pkts - the transformed packets to be restored.

Returns:

the restored packets.

transform

public abstract RawPacket transform(RawPacket pkt)

Transforms a specific packet.

Parameters:

pkt - the packet to be transformed.

Returns:

the transformed packet.

transform

public RawPacket[] transform(RawPacket[] pkts)

Transforms each packet in an array of packets. Null values must be ignored. Transforms an array of packets by calling transform(RawPacket) on each one.

Specified by:

transform in interface PacketTransformer

Parameters:

pkts - the packets to be transformed

Returns:

the transformed packets