RTCP_SDES_Packet Class Reference

The Source Description packet is sent by all members of a session. At a minimum, the canonical name (or CNAME) is sent with each RTCP packet. Other items such as name, email, or location are included less frequently. More...

#include <RTCP_Packet.h>

Inheritance diagram for RTCP_SDES_Packet:

Collaboration diagram for RTCP_SDES_Packet:

Public Member Functions
	RTCP_SDES_Packet (char *buffer, int *len)
	Constructor for incoming SDES packets.
	RTCP_SDES_Packet (void)
	Constructor for outgoing SDES packets.
virtual	~RTCP_SDES_Packet (void)
	Destructor.
void	add_item (ACE_UINT32 ssrc, unsigned char type, unsigned char length, const char *data)
void	add_priv_item (ACE_UINT32 ssrc, unsigned char nameLength, const char *name, unsigned char dataLength, const char *data)
unsigned int	packet_size (void)
	Returns the size of the packet in bytes.
void	dump (void)
	Prints the contents of the packet.
ACE_UINT32	ssrc (void)
Public Member Functions inherited from RTCP_Packet
	RTCP_Packet (void)
	Constructor for outgoing RTCP packets.
	RTCP_Packet (char *buffer)
	Constructor for incoming RTCP packets.
virtual	~RTCP_Packet ()
	Destructor.
void	get_packet_data (char **buffer, ACE_UINT16 &length)
	Returns a pointer to a local buffer containing the packet.
int	is_valid (char is_first)

Private Member Functions
void	build_packet (void)
	Used to create the byte representation of the RTCP packet.
void	add_chunk (ACE_UINT32 ssrc)
	Add a chunk to the packet.

Private Attributes
unsigned long	num_chunks_
sdesChunk_t *	chunk_
	A linked list of chunks for this packet (only 1 for non-mixers).

Additional Inherited Members
Protected Member Functions inherited from RTCP_Packet
virtual void	build_packet (void)=0
Protected Attributes inherited from RTCP_Packet
RTCP_Common_Header	chd_
	Header data common to all RTCP packets.
char *	packet_data_
	Buffer to hold byte representation of the RTCP packet.

Detailed Description

The Source Description packet is sent by all members of a session. At a minimum, the canonical name (or CNAME) is sent with each RTCP packet. Other items such as name, email, or location are included less frequently.

Constructor & Destructor Documentation

RTCP_SDES_Packet::RTCP_SDES_Packet	(	char *	buffer,
		int *	len
	)

Constructor for incoming SDES packets.

RTCP_SDES_Packet::RTCP_SDES_Packet

(

void

)

Constructor for outgoing SDES packets.

RTCP_SDES_Packet::~RTCP_SDES_Packet ( void  )

virtual

Destructor.

Member Function Documentation

void RTCP_SDES_Packet::add_chunk ( ACE_UINT32  ssrc )

private

Add a chunk to the packet.

void RTCP_SDES_Packet::add_item	(	ACE_UINT32	ssrc,
		unsigned char	type,
		unsigned char	length,
		const char *	data
	)

This will add a standard item of type and length for the ssrc specified. When the first item for a ssrc is added, a chunk is created. Subsequent items for that ssrc are added to the same chunk. New chunks are created for each unique ssrc.

void RTCP_SDES_Packet::add_priv_item	(	ACE_UINT32	ssrc,
		unsigned char	nameLength,
		const char *	name,
		unsigned char	dataLength,
		const char *	data
	)

This will add a private item using the name and data for the ssrc specified. When the first item for a ssrc is added, a chunk is created. Subsequent items for that ssrc are added to the same chunk. New chunks are created for each unique ssrc.

void RTCP_SDES_Packet::build_packet ( void  )

private

Used to create the byte representation of the RTCP packet.

void RTCP_SDES_Packet::dump

(

void

)

Prints the contents of the packet.

unsigned int RTCP_SDES_Packet::packet_size ( void  )

virtual

Returns the size of the packet in bytes.

Implements RTCP_Packet.

ACE_UINT32 RTCP_SDES_Packet::ssrc ( void  )

inline

This returns the synchronization source id for this packet. This assumes that this source is only receiving messages from end systems (i.e. only one source id per SDES)

Member Data Documentation

sdesChunk_t* RTCP_SDES_Packet::chunk_

private

A linked list of chunks for this packet (only 1 for non-mixers).

unsigned long RTCP_SDES_Packet::num_chunks_

private

The number of chunks contained in this packet. 1 for end systems, 1+ for mixers

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The documentation for this class was generated from the following files:

• RTCP_Packet.h
• RTCP_Packet.cpp