*  no report block was meant for us), this function can e used to indicate that something was received from	 *  this source. This will prevent a premature timeout for this participant. The message was received at time 	 *  \c receivetime from address \c senderaddress. The \c senderaddress parameter must be NULL if the 	 *  packet was sent by the local participant.	 */	int UpdateReceiveTime(uint32_t ssrc,const RTPTime &receivetime,const RTPAddress *senderaddress);		/** Starts the iteration over the participants by going to the first member in the table.	 *  Starts the iteration over the participants by going to the first member in the table.	 *  If a member was found, the function returns \c true, otherwise it returns \c false.	 */	bool GotoFirstSource();	/** Sets the current source to be the next source in the table.	 *  Sets the current source to be the next source in the table. If we're already at the last source, 	 *  the function returns \c false, otherwise it returns \c true.	 */	bool GotoNextSource();	/** Sets the current source to be the previous source in the table.	 *  Sets the current source to be the previous source in the table. If we're at the first source, 	 *  the function returns \c false, otherwise it returns \c true.	 */	bool GotoPreviousSource();	/** Sets the current source to be the first source in the table which has RTPPacket instances 	 *  that we haven't extracted yet.	 *  Sets the current source to be the first source in the table which has RTPPacket instances 	 *  that we haven't extracted yet. If no such member was found, the function returns \c false,	 *  otherwise it returns \c true.	 */	bool GotoFirstSourceWithData();	/** Sets the current source to be the next source in the table which has RTPPacket instances that	 *  we haven't extracted yet.	 *  Sets the current source to be the next source in the table which has RTPPacket instances that	 *  we haven't extracted yet. If no such member was found, the function returns \c false,	 *  otherwise it returns \c true.	 */	bool GotoNextSourceWithData();	/** Sets the current source to be the previous source in the table which has RTPPacket instances 	 *  that we haven't extracted yet.	 *  Sets the current source to be the previous source in the table which has RTPPacket instances 	 *  that we haven't extracted yet. If no such member was found, the function returns \c false,	 *  otherwise it returns \c true.	 */	bool GotoPreviousSourceWithData();	/** Returns the RTPSourceData instance for the currently selected participant. */	RTPSourceData *GetCurrentSourceInfo();	/** Returns the RTPSourceData instance for the participant identified by \c ssrc, or 	 *  NULL if no such entry exists.  	 */                         	RTPSourceData *GetSourceInfo(uint32_t ssrc);	/** Extracts the next packet from the received packets queue of the current participant. */	RTPPacket *GetNextPacket();	/** Returns \c true if an entry for participant \c ssrc exists and \c false otherwise. */	bool GotEntry(uint32_t ssrc);	/** If present, it returns the RTPSourceData instance of the entry which was created by CreateOwnSSRC. */	RTPSourceData *GetOwnSourceInfo()								{ return (RTPSourceData *)owndata; }	/** Assuming that the current time is \c curtime, time out the members from whom we haven't heard 	 *  during the previous time  interval \c timeoutdelay.	 */	void Timeout(const RTPTime &curtime,const RTPTime &timeoutdelay);	/** Assuming that the current time is \c curtime, remove the sender flag for senders from whom we haven't	 *  received any RTP packets during the previous time interval \c timeoutdelay.	 */	void SenderTimeout(const RTPTime &curtime,const RTPTime &timeoutdelay);	/** Assuming that the current time is \c curtime, remove the members who sent a BYE packet more than 	 *  the time interval \c timeoutdelay ago.	 */	void BYETimeout(const RTPTime &curtime,const RTPTime &timeoutdelay);	/** Assuming that the current time is \c curtime, clear the SDES NOTE items which haven't been updated 	 *  during the previous time interval \c timeoutdelay.	 */	void NoteTimeout(const RTPTime &curtime,const RTPTime &timeoutdelay);	/** Combines the functions SenderTimeout, BYETimeout, Timeout and NoteTimeout.	 *  Combines the functions SenderTimeout, BYETimeout, Timeout and NoteTimeout. This is more efficient	 *  than calling all four functions since only one iteration is needed in this function.	 */	void MultipleTimeouts(const RTPTime &curtime,const RTPTime &sendertimeout,			      const RTPTime &byetimeout,const RTPTime &generaltimeout,			      const RTPTime &notetimeout);	/** Returns the number of participants which are marked as a sender. */	int GetSenderCount() const										{ return sendercount; }	/** Returns the total number of entries in the source table. */	int GetTotalCount() const										{ return totalcount; }	/** Returns the number of members which have been validated and which haven't sent a BYE packet yet. */	int GetActiveMemberCount() const								{ return activecount; } #ifdef RTPDEBUG	void Dump();	void SafeCountTotal();	void SafeCountSenders();	void SafeCountActive();#endif // RTPDEBUGprotected:	/** Is called when an RTP packet is about to be processed. */	virtual void OnRTPPacket(RTPPacket *pack,const RTPTime &receivetime, const RTPAddress *senderaddress) 		{ }	/** Is called when an RTCP compound packet is about to be processed. */	virtual void OnRTCPCompoundPacket(RTCPCompoundPacket *pack,const RTPTime &receivetime, 	                                  const RTPAddress *senderaddress) 											{ }	/** Is called when an SSRC collision was detected.	 *  Is called when an SSRC collision was detected. The instance \c srcdat is the one present in 	 *  the table, the address \c senderaddress is the one that collided with one of the addresses 	 *  and \c isrtp indicates against which address of \c srcdat the check failed.	 */	virtual void OnSSRCCollision(RTPSourceData *srcdat,const RTPAddress *senderaddress,bool isrtp)  			{ }	/** Is called when another CNAME was received than the one already present for source \c srcdat. */	virtual void OnCNAMECollision(RTPSourceData *srcdat,const RTPAddress *senderaddress,	                              const uint8_t *cname,size_t cnamelength)										{ }	/** Is called when a new entry \c srcdat is added to the source table. */	virtual void OnNewSource(RTPSourceData *srcdat)			 													{ }	/** Is called when the entry \c srcdat is about to be deleted from the source table. */	virtual void OnRemoveSource(RTPSourceData *srcdat)															{ }	/** Is called when participant \c srcdat is timed out. */	virtual void OnTimeout(RTPSourceData *srcdat)																{ }	/** Is called when participant \c srcdat is timed after having sent a BYE packet. */	virtual void OnBYETimeout(RTPSourceData *srcdat)															{ }	/** Is called when a BYE packet has been processed for source \c srcdat. */	virtual void OnBYEPacket(RTPSourceData *srcdat)																{ }	/** Is called when an RTCP APP packet \c apppacket has been received at time \c receivetime 	 *  from address \c senderaddress.	 */	virtual void OnAPPPacket(RTCPAPPPacket *apppacket,const RTPTime &receivetime,	                         const RTPAddress *senderaddress)													{ }	/** Is called when an unknown RTCP packet type was detected. */	virtual void OnUnknownPacketType(RTCPPacket *rtcppack,const RTPTime &receivetime,	                                 const RTPAddress *senderaddress)											{ }	/** Is called when an unknown packet format for a known packet type was detected. */	virtual void OnUnknownPacketFormat(RTCPPacket *rtcppack,const RTPTime &receivetime,	                                   const RTPAddress *senderaddress)											{ }	/** Is called when the SDES NOTE item for source \c srcdat has been timed out. */	virtual void OnNoteTimeout(RTPSourceData *srcdat)															{ }private:	void ClearSourceList();	int ObtainSourceDataInstance(uint32_t ssrc,RTPInternalSourceData **srcdat,bool *created);	int GetRTCPSourceData(uint32_t ssrc,const RTPAddress *senderaddress,RTPInternalSourceData **srcdat,bool *newsource);	bool CheckCollision(RTPInternalSourceData *srcdat,const RTPAddress *senderaddress,bool isrtp);		RTPKeyHashTable<const uint32_t,RTPInternalSourceData*,RTPSources_GetHashIndex,RTPSOURCES_HASHSIZE> sourcelist;		int sendercount;	int totalcount;	int activecount;#ifdef RTP_SUPPORT_PROBATION	ProbationType probationtype;#endif // RTP_SUPPORT_PROBATION	RTPInternalSourceData *owndata;};#endif // RTPSOURCES_H