#include <RTPPacket.h>

Public Member Functions
	RTPPacket (const char *name=NULL)
	RTPPacket (const RTPPacket &packet)
virtual	~RTPPacket ()
RTPPacket &	operator= (const RTPPacket &packet)
virtual RTPPacket *	dup () const
virtual std::string	info ()
virtual void	dump ()
virtual int	getMarker ()
virtual void	setMarker (int marker)
virtual int	getPayloadType ()
virtual void	setPayloadType (int payloadType)
virtual uint16	getSequenceNumber ()
virtual void	setSequenceNumber (uint16 sequenceNumber)
virtual uint32	getTimeStamp ()
virtual void	setTimeStamp (uint32 timeStamp)
virtual uint32	getSSRC ()
virtual void	setSSRC (uint32 ssrc)
virtual int	getHeaderLength ()
virtual int	getPayloadLength ()
Static Public Member Functions
static int	getFixedHeaderLength ()
Protected Attributes
int	_version
int	_padding
int	_extension
int	_csrcCount
int	_marker
int	_payloadType
uint16	_sequenceNumber
uint32	_timeStamp
uint32	_ssrc

Detailed Description

This class represents an rtp data packet. Real data can either be encapsulated or simulated by adding length. Following rtp header fields exist but aren't used: padding, extension, csrcCount. The csrcList can't be used because csrcCount is always 0.

Definition at line 34 of file RTPPacket.h.

Constructor & Destructor Documentation

RTPPacket::RTPPacket ( const char * name = NULL )

Default constructor.

Definition at line 27 of file RTPPacket.cc.

Referenced by dup().

                                     : cPacket(name)
{
    _version = 2;
    _padding = 0;
    _extension = 0;
    _csrcCount = 0;
    _marker = 0;
    _payloadType = 0;
    _sequenceNumber = 0;
    _timeStamp = 0;
    _ssrc = 0;

    // a standard rtp packet without csrcs and data has a length of 12 bytes
    setByteLength(getFixedHeaderLength());
}

RTPPacket::RTPPacket ( const RTPPacket & packet )

Copy constructor.

Definition at line 44 of file RTPPacket.cc.

                                            : cPacket()
{
    setName(packet.getName());
    operator=(packet);
}

RTPPacket::~RTPPacket ( ) [virtual]

Destructor.

Definition at line 51 of file RTPPacket.cc.

{
    // when csrcList is implemented this
    // should free the memory used for it
}

Member Function Documentation

void RTPPacket::dump ( ) [virtual]

Writes a longer description about this RTPPacket into the given stream.

Definition at line 88 of file RTPPacket.cc.

Referenced by RTP::readRet().

{
    ev << "RTPPacket:" << endl;
    ev << "  payloadType = " << _payloadType << endl;
    ev << "  sequenceNumber = " << _sequenceNumber << endl;
    ev << "  timeStamp = " << _timeStamp << endl;
    ev << "  payloadLength = " << getPayloadLength() << endl;
}

RTPPacket * RTPPacket::dup ( ) const [virtual]

Duplicates the RTPPacket by calling the copy constructor.

Definition at line 58 of file RTPPacket.cc.

{
    return new RTPPacket(*this);
}

int RTPPacket::getFixedHeaderLength ( ) [static]

Returns the length of the fixed header of an RTPPacket.

Definition at line 157 of file RTPPacket.cc.

Referenced by getHeaderLength(), and RTPPacket().

{
    return 12;
}

int RTPPacket::getHeaderLength ( ) [virtual]

Returns the length of the header (fixed plus variable part) of this RTPPacket.

Definition at line 162 of file RTPPacket.cc.

Referenced by getPayloadLength().

{
    // fixed header is 12 bytes long,
    // add 4 bytes for every csrc identifier
    return(getFixedHeaderLength() + 4 * _csrcCount);
}

int RTPPacket::getMarker ( ) [virtual]

Returns the value of the marker bit in this RTPPacket.

Definition at line 98 of file RTPPacket.cc.

Referenced by RTPAVProfilePayload32Receiver::processPacket().

{
    return _marker;
}

int RTPPacket::getPayloadLength ( ) [virtual]

Returns the size of the payload stored in this RTPPacket.

Definition at line 170 of file RTPPacket.cc.

Referenced by dump(), info(), and RTPSenderInfo::processRTPPacket().

{
    return(getByteLength() - getHeaderLength());
}

int RTPPacket::getPayloadType ( ) [virtual]

Returns the payload type of this RTPPacket.

Definition at line 110 of file RTPPacket.cc.

Referenced by RTPProfile::dataIn().

{
    return _payloadType;
}

uint16 RTPPacket::getSequenceNumber ( ) [virtual]

Returns the sequence number of this RTPPacket.

Definition at line 122 of file RTPPacket.cc.

Referenced by RTPAVProfilePayload32Receiver::processPacket(), and RTPReceiverInfo::processRTPPacket().

{
    return _sequenceNumber;
}

uint32 RTPPacket::getSSRC ( ) [virtual]

Returns the ssrc identifier of this RTPPacket.

Definition at line 146 of file RTPPacket.cc.

Referenced by RTPProfile::dataIn(), and RTCP::processIncomingRTPPacket().

{
    return _ssrc;
}

uint32 RTPPacket::getTimeStamp ( ) [virtual]

Returns the rtp time stamp of this RTPPacket.

Definition at line 134 of file RTPPacket.cc.

Referenced by RTPPayloadReceiver::processPacket(), RTPAVProfilePayload32Receiver::processPacket(), and RTPReceiverInfo::processRTPPacket().

{
    return _timeStamp;
}

std::string RTPPacket::info ( ) [virtual]

Writes a one line info about this RTPPacket into the given string.

Definition at line 80 of file RTPPacket.cc.

{
    std::stringstream out;
    out << "RTPPacket: payloadType=" << _payloadType << " payloadLength=" << getPayloadLength();
    return out.str();
}

RTPPacket & RTPPacket::operator= ( const RTPPacket & packet )

Assignment operator.

Definition at line 64 of file RTPPacket.cc.

Referenced by RTPPacket().

{
    cPacket::operator=(packet);
    _version = packet._version;
    _padding = packet._padding;
    _extension = packet._extension;
    _csrcCount = packet._csrcCount;
    _marker = packet._marker;
    _payloadType = packet._payloadType;
    _sequenceNumber = packet._sequenceNumber;
    _timeStamp = packet._timeStamp;
    _ssrc = packet._ssrc;
    return *this;
}

void RTPPacket::setMarker ( int marker ) [virtual]

Sets the value of the marker bit in this RTPPacket.

Definition at line 104 of file RTPPacket.cc.

Referenced by RTPAVProfilePayload32Sender::sendPacket().

{
    _marker = marker;
}

void RTPPacket::setPayloadType ( int payloadType ) [virtual]

Sets the payload type of this RTPPacket.

Definition at line 116 of file RTPPacket.cc.

Referenced by RTPAVProfilePayload32Sender::sendPacket().

{
    _payloadType = payloadType;
}

void RTPPacket::setSequenceNumber ( uint16 sequenceNumber ) [virtual]

Sets the sequence number of this RTPPacket.

Definition at line 128 of file RTPPacket.cc.

Referenced by RTPAVProfilePayload32Sender::sendPacket().

{
    _sequenceNumber = sequenceNumber;
}

void RTPPacket::setSSRC ( uint32 ssrc ) [virtual]

Sets the ssrc identifier of this RTPPacket.

Definition at line 152 of file RTPPacket.cc.

Referenced by RTPAVProfilePayload32Sender::sendPacket().

{
    _ssrc = ssrc;
}

void RTPPacket::setTimeStamp ( uint32 timeStamp ) [virtual]

Sets the rtp time stamp of this RTPPacket.

Definition at line 140 of file RTPPacket.cc.

Referenced by RTPAVProfilePayload32Sender::sendPacket().

{
    _timeStamp = timeStamp;
}

Member Data Documentation

int RTPPacket::_csrcCount [protected]

Stores the number (0..31) of contributing sources for this RTPPacket. It is always 0 because contributing sources are added by rtp mixers which aren't implemented.

Definition at line 163 of file RTPPacket.h.

Referenced by getHeaderLength(), operator=(), and RTPPacket().

int RTPPacket::_extension [protected]

Set to 1, if this RTPPacket contains an rtp header extension, 0 otherwise. This implementation doesn't support rtp header extensions, so it is always 0.

Definition at line 156 of file RTPPacket.h.

Referenced by operator=(), and RTPPacket().

int RTPPacket::_marker [protected]

The marker of this RTPPacket.

Definition at line 168 of file RTPPacket.h.

Referenced by getMarker(), operator=(), RTPPacket(), and setMarker().

int RTPPacket::_padding [protected]

Set to 1 if padding is used in this RTPPacket, 0 otherwise. This implementation doesn't use padding bytes, so it is always 0.

Definition at line 150 of file RTPPacket.h.

Referenced by operator=(), and RTPPacket().

int RTPPacket::_payloadType [protected]

The type of payload carried in this RTPPacket.