SH::LossList Class Reference

#include <LCRetransRecv.h>

Inheritance diagram for SH::LossList:

[legend]Collaboration diagram for SH::LossList:

[legend]List of all members.


Public Member Functions
	LossList (RTPDecoderSH *caller, MNSelector &sel)
virtual	~LossList ()
void	init (int32 list_timeout, u_int32 repeat_timeouts)
void	uninit ()
void	startStreaming ()
void	stopStreaming ()
void	init_timeout (struct timeval &lossList_timeout)
void	insert_rel_timeout_timer (bool inCallback)
void	insert_lc_gap (u_int32 ssrc, u_int64 from, u_int64 to)
bool	schedule_send_list (u_int32 ssrc, bool inCallback)
void	schedule_retrans_timer (bool inCallback)
void	schedule_transtrans_timer_again (bool inCallback)
void	lock ()
void	unlock ()
bool	process_lc_packet (u_int32 ssrc, u_int64 bytecount, int32 rd_len)
int64	sendLossList ()
void	evalLCRTCPPacket (u_int32 ssrc, void data, int len, int subtype, char name, bool inCallback)
DataPtr	evalLCRTPPacket (MNRTPPacketPtr packet, MNRope *&payload, u_int64_t &bytecount)
Public Attributes
MNTimer	_timer
MNTimer	_timeout_timer
MNLCRTPLossList *	_l
TL	_cb
TL	_timer_call
int32	_list_timeout
u_int32	_repeat_timeouts
lcstreamer_recv_t	_StreamDesc
bool	_first_time

Constructor & Destructor Documentation

SH::LossList::LossList ( RTPDecoderSH * caller,

MNSelector & sel

)

virtual SH::LossList::~LossList ( ) [virtual]

Member Function Documentation

void SH::LossList::evalLCRTCPPacket ( u_int32 ssrc,

void * data,

int len,

int subtype,

char * name,

bool inCallback

) [virtual]

Implements RetransRecvBase.

DataPtr SH::LossList::evalLCRTPPacket ( MNRTPPacketPtr packet,

MNRope *& payload,

u_int64_t & bytecount

) [virtual]

Implements RetransRecvBase.

void SH::LossList::init ( int32 list_timeout,

u_int32 repeat_timeouts

) [virtual]

An LC-RTP attribute that determines the number of retransmission loops the sender performs until it gives up even if the loss list is not empty yet.
Implements RetransRecvBase.

void SH::LossList::init_timeout ( struct timeval & lossList_timeout )

Initialize the given structure to a random timeout value based on the _list_timeout.
Parameters:

lossList_timeout Out variable that is initialized.

void SH::LossList::insert_lc_gap ( u_int32 ssrc,

u_int64 from,

u_int64 to

)

A packet has arrived that has left a gap after the previous packet. The caller has identified this by looking at the byte count in the extension header.
Parameters:

ssrc The SSRC to which the sender belongs.

from The byte that was expected.

to The byte that was received.

void SH::LossList::insert_rel_timeout_timer ( bool inCallback )

Insert a relative timer, that calls the callback for _cb.
Parameters:

inCallback The selector must be woken up if this is true.

void SH::LossList::lock ( ) [inline]

bool SH::LossList::process_lc_packet ( u_int32 ssrc,

u_int64 bytecount,

int32 rd_len

)

The caller tells the loss list that some data for the given SSRC has arrived in a retransmission packet.
Parameters:

ssrc The SSRC of the data that has arrived.

bytecount The offset of the data according to the extension header.

rd_len The amount of data that has arrived.

Return values:

true The data was missing, the loss list has been updated and the caller should process this data further.

false The data was not missing. Forget it.

void SH::LossList::schedule_retrans_timer ( bool inCallback )

Schedule the next retransmission of the loss list. This function should only be called if the maximum number of retransmissions is not reached yet.
Parameters:

inCallback False if we must notify the timer's selector, true if the timer's selector is processing this call and is awake anyway.

bool SH::LossList::schedule_send_list ( u_int32 ssrc,

bool inCallback

)

Start a timer to delay the transmission of the loss list. Although it is not dangerous to start this timer if the loss list is empty, it is meant to be used if the list is not empty.
Parameters:

ssrc The SSRC to which the loss list belongs.

inCallback False if we must notify the timer's selector, true if the timer's selector is processing this call and is awake anyway.

Return values:

true If a timer has been started, ie. if the loss list was not empty.

false If the timer has not been started because the loss list was empty.

void SH::LossList::schedule_transtrans_timer_again ( bool inCallback )

Schedule the retransmission of a loss list if the previous transmission could not get all data across because there were too many separate losses to fit into one packet.
Parameters:

inCallback False if we must notify the timer's selector, true if the timer's selector is processing this call and is awake anyway.