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

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

public class PacketManipulator
extends Object

PacketManipulator contains methods for parsing RTP packets. It is used to get certain RTP packet field from a RawPacket, which holds the content of a RTP packet. Because all the methods operates on certain RawPacket, all methods in this class are static methods.

Author:

Bing SU (nova.su@gmail.com)

Constructor Summary

PacketManipulator()

Method Summary

static int	GetRTPHeaderLength(RawPacket pkt) Get RTP header length from a RTP packet
static int	GetRTPPaddingSize(RawPacket pkt) Get RTP padding size from a RTP packet
static int	GetRTPPayloadLength(RawPacket pkt) Get RTP payload length from a RTP packet
static byte	GetRTPPayloadType(RawPacket pkt) Get RTP payload type from a RTP packet
static int	GetRTPSequenceNumber(RawPacket pkt) Get RTP sequence number from a RTP packet
static long	GetRTPSSRC(RawPacket pkt) Get RTP SSRC from a RTP packet
static boolean	IsPacketMarked(RawPacket pkt) Test whether if a RTP packet is padded
static byte[]	ReadTimeStampIntoByteArray(RawPacket pkt) Get RTP timestamp from a RTP packet

Methods inherited from class java.lang.Object

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

Constructor Detail

PacketManipulator

public PacketManipulator()

Method Detail

GetRTPPaddingSize

public static int GetRTPPaddingSize(RawPacket pkt)

Get RTP padding size from a RTP packet

Parameters:

pkt - the source RTP packet

Returns:

RTP padding size from source RTP packet

GetRTPHeaderLength

public static int GetRTPHeaderLength(RawPacket pkt)

Get RTP header length from a RTP packet

Parameters:

pkt - the source RTP packet

Returns:

RTP header length from source RTP packet

GetRTPPayloadLength

public static int GetRTPPayloadLength(RawPacket pkt)

Get RTP payload length from a RTP packet

Parameters:

pkt - the source RTP packet

Returns:

RTP payload length from source RTP packet

GetRTPSSRC

public static long GetRTPSSRC(RawPacket pkt)

Get RTP SSRC from a RTP packet

Parameters:

pkt - the source RTP packet

Returns:

RTP SSRC from source RTP packet

GetRTPSequenceNumber

public static int GetRTPSequenceNumber(RawPacket pkt)

Get RTP sequence number from a RTP packet

Parameters:

pkt - the source RTP packet

Returns:

RTP sequence num from source packet

IsPacketMarked

public static boolean IsPacketMarked(RawPacket pkt)

Test whether if a RTP packet is padded

Parameters:

pkt - the source RTP packet

Returns:

whether if source RTP packet is padded

GetRTPPayloadType

public static byte GetRTPPayloadType(RawPacket pkt)

Get RTP payload type from a RTP packet

Parameters:

pkt - the source RTP packet

Returns:

RTP payload type of source RTP packet

ReadTimeStampIntoByteArray

public static byte[] ReadTimeStampIntoByteArray(RawPacket pkt)

Get RTP timestamp from a RTP packet

Parameters:

pkt - the source RTP packet

Returns:

RTP timestamp of source RTP packet