org.jitsi.impl.neomedia.transform

Class AbsSendTimeEngine

java.lang.Object

org.jitsi.impl.neomedia.transform.SinglePacketTransformer

org.jitsi.impl.neomedia.transform.SinglePacketTransformerAdapter

org.jitsi.impl.neomedia.transform.AbsSendTimeEngine

All Implemented Interfaces:

PacketTransformer, TransformEngine

public class AbsSendTimeEngine
extends SinglePacketTransformerAdapter
implements TransformEngine

Implements a TransformEngine which replaces the timestamps in abs-send-time RTP extensions with timestamps generated locally. See http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time

Author:

Boris Grozev

Constructor Summary

Constructors

Constructor and Description
AbsSendTimeEngine() Initializes a new AbsSendTimeEngine instance.

Method Summary

Modifier and Type	Method and Description
static long	getAbsSendTime(RawPacket pkt, byte extensionID) 1 2 3 4 5 6 7 8 9 10 11 12 ....
PacketTransformer	getRTCPTransformer() Implements TransformEngine.getRTCPTransformer().
PacketTransformer	getRTPTransformer() Implements TransformEngine.getRTPTransformer().
void	setExtensionID(int id) Sets the ID of the abs-send-time RTP extension.
RawPacket	transform(RawPacket pkt) Implements SinglePacketTransformer.transform(RawPacket).

Methods inherited from class org.jitsi.impl.neomedia.transform.SinglePacketTransformerAdapter

reverseTransform

Methods inherited from class org.jitsi.impl.neomedia.transform.SinglePacketTransformer

close, reverseTransform, transform

Methods inherited from class java.lang.Object

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

Constructor Detail

AbsSendTimeEngine

public AbsSendTimeEngine()

Initializes a new AbsSendTimeEngine instance.

Method Detail

transform

public RawPacket transform(RawPacket pkt)

Implements SinglePacketTransformer.transform(RawPacket).

Overrides:

transform in class SinglePacketTransformerAdapter

Parameters:

pkt - the packet to be transformed.

Returns:

the transformed packet.

getRTPTransformer

public PacketTransformer getRTPTransformer()

Implements TransformEngine.getRTPTransformer().

Specified by:

getRTPTransformer in interface TransformEngine

Returns:

the PacketTransformer for RTP packets

getRTCPTransformer

public PacketTransformer getRTCPTransformer()

Implements TransformEngine.getRTCPTransformer(). This TransformEngine does not transform RTCP packets.

Specified by:

getRTCPTransformer in interface TransformEngine

Returns:

the PacketTransformer for RTCP packets

setExtensionID

public void setExtensionID(int id)

Sets the ID of the abs-send-time RTP extension. Set to -1 to effectively disable this transformer.

Parameters:

id - the ID to set.

getAbsSendTime

public static long getAbsSendTime(RawPacket pkt,
                                  byte extensionID)

1 2 3 4 5 6 7 8 9 10 11 12 .... 28 29 30 31 32 +-+-+-+-+-+-+-+-+-+-+--+--+-....+--+--+--+--+--+ | ID | LEN | AbsSendTime Value | +-+-+-+-+-+-+-+-+-+-+--+--+-....+--+--+--+--+--+ getAbsSendTime returns the AbsSendTime as a 24bit value

Parameters:

pkt - is a RawPacket

Returns: