/*  This file is a part of JRTPLIB  Copyright (c) 1999-2007 Jori Liesenborgs  Contact: jori.liesenborgs@gmail.com  This library was developed at the "Expertisecentrum Digitale Media"  (http://www.edm.uhasselt.be), a research center of the Hasselt University  (http://www.uhasselt.be). The library is based upon work done for   my thesis at the School for Knowledge Technology (Belgium/The Netherlands).  Permission is hereby granted, free of charge, to any person obtaining a  copy of this software and associated documentation files (the "Software"),  to deal in the Software without restriction, including without limitation  the rights to use, copy, modify, merge, publish, distribute, sublicense,  and/or sell copies of the Software, and to permit persons to whom the  Software is furnished to do so, subject to the following conditions:  The above copyright notice and this permission notice shall be included  in all copies or substantial portions of the Software.  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS  IN THE SOFTWARE.*/#include "rtpsourcedata.h"#include "rtpdefines.h"#include "rtpaddress.h"#include "rtpmemorymanager.h"#if ! (defined(WIN32) || defined(_WIN32_WCE))	#include <netinet/in.h>#endif // WIN32#ifdef RTPDEBUG	#include <iostream>	#include <string>#endif // RTPDEBUG#include "rtpdebug.h"#define ACCEPTPACKETCODE									\		*accept = true;									\												\		sentdata = true;								\		packetsreceived++;								\		numnewpackets++;								\												\		if (pack->GetExtendedSequenceNumber() == 0)					\		{										\			baseseqnr = 0x0000FFFF;							\			numcycles = 0x00010000;							\		}										\		else										\			baseseqnr = pack->GetExtendedSequenceNumber() - 1;			\												\		exthighseqnr = baseseqnr + 1;							\		prevpacktime = receivetime;							\		prevexthighseqnr = baseseqnr;							\		savedextseqnr = baseseqnr;							\												\		pack->SetExtendedSequenceNumber(exthighseqnr);					\												\		prevtimestamp = pack->GetTimestamp();						\		lastmsgtime = prevpacktime;							\		if (!ownpacket) /* for own packet, this value is set on an outgoing packet */	\			lastrtptime = prevpacktime;void RTPSourceStats::ProcessPacket(RTPPacket *pack,const RTPTime &receivetime,double tsunit,                                   bool ownpacket,bool *accept,bool applyprobation,bool *onprobation){	// Note that the sequence number in the RTP packet is still just the	// 16 bit number contained in the RTP header	*onprobation = false;		if (!sentdata) // no valid packets received yet	{#ifdef RTP_SUPPORT_PROBATION		if (applyprobation)		{			bool acceptpack = false;			if (probation)  			{					uint16_t pseq;				uint32_t pseq2;					pseq = prevseqnr;				pseq++;				pseq2 = (uint32_t)pseq;				if (pseq2 == pack->GetExtendedSequenceNumber()) // ok, its the next expected packet				{					prevseqnr = (uint16_t)pack->GetExtendedSequenceNumber();					probation--;						if (probation == 0) // probation over						acceptpack = true;					else						*onprobation = true;				}				else // not next packet				{					probation = RTP_PROBATIONCOUNT;					prevseqnr = (uint16_t)pack->GetExtendedSequenceNumber();					*onprobation = true;				}			}			else // first packet received with this SSRC ID, start probation			{				probation = RTP_PROBATIONCOUNT;				prevseqnr = (uint16_t)pack->GetExtendedSequenceNumber();					*onprobation = true;			}				if (acceptpack)			{				ACCEPTPACKETCODE			}			else			{				*accept = false;				lastmsgtime = receivetime;			}		}		else // No probation		{			ACCEPTPACKETCODE		}#else // No compiled-in probation support		ACCEPTPACKETCODE#endif // RTP_SUPPORT_PROBATION	}	else // already got packets	{		uint16_t maxseq16;		uint32_t extseqnr;		// Adjust max extended sequence number and set extende seq nr of packet		*accept = true;		packetsreceived++;		numnewpackets++;		maxseq16 = (uint16_t)(exthighseqnr&0x0000FFFF);		if (pack->GetExtendedSequenceNumber() >= maxseq16)		{			extseqnr = numcycles+pack->GetExtendedSequenceNumber();			exthighseqnr = extseqnr;		}		else		{			uint16_t dif1,dif2;			dif1 = ((uint16_t)pack->GetExtendedSequenceNumber());			dif1 -= maxseq16;			dif2 = maxseq16;			dif2 -= ((uint16_t)pack->GetExtendedSequenceNumber());			if (dif1 < dif2)			{				numcycles += 0x00010000;				extseqnr = numcycles+pack->GetExtendedSequenceNumber();				exthighseqnr = extseqnr;			}			else				extseqnr = numcycles+pack->GetExtendedSequenceNumber();		}		pack->SetExtendedSequenceNumber(extseqnr);		// Calculate jitter		if (tsunit > 0)		{			RTPTime curtime = receivetime;			double diffts1,diffts2,diff;			curtime -= prevpacktime;			diffts1 = curtime.GetDouble()/tsunit;				diffts2 = (double)pack->GetTimestamp() - (double)prevtimestamp;			diff = diffts1 - diffts2;			if (diff < 0)				diff = -diff;			diff -= djitter;			diff /= 16.0;			djitter += diff;			jitter = (uint32_t)djitter;		}		else		{			djitter = 0;			jitter = 0;		}		prevpacktime = receivetime;		prevtimestamp = pack->GetTimestamp();		lastmsgtime = prevpacktime;		if (!ownpacket) // for own packet, this value is set on an outgoing packet			lastrtptime = prevpacktime;	}}RTPSourceData::RTPSourceData(uint32_t s, RTPMemoryManager *mgr) : RTPMemoryObject(mgr),SDESinf(mgr),byetime(0,0){	ssrc = s;	issender = false;	iscsrc = false;	timestampunit = -1;	receivedbye = false;	byereason = 0;	byereasonlen = 0;	rtpaddr = 0;	rtcpaddr = 0;	ownssrc = false;	validated = false;	processedinrtcp = false;				isrtpaddrset = false;	isrtcpaddrset = false;}RTPSourceData::~RTPSourceData(){	FlushPackets();	if (byereason)		RTPDeleteByteArray(byereason,GetMemoryManager());	if (rtpaddr)		RTPDelete(rtpaddr,GetMemoryManager());	if (rtcpaddr)		RTPDelete(rtcpaddr,GetMemoryManager());}double RTPSourceData::INF_GetEstimatedTimestampUnit() const{	if (!SRprevinf.HasInfo())		return -1.0;		RTPTime t1 = RTPTime(SRinf.GetNTPTimestamp());	RTPTime t2 = RTPTime(SRprevinf.GetNTPTimestamp());	if ((t1.GetSeconds() == 0 && t1.GetMicroSeconds() == 0) ||	    (t2.GetSeconds() == 0 && t2.GetMicroSeconds() == 0)) // one of the times couldn't be calculated		return -1.0;	if (t1 < t2)		return -1.0;	t1 -= t2; // get the time difference		uint32_t tsdiff = SRinf.GetRTPTimestamp()-SRprevinf.GetRTPTimestamp();		return (t1.GetDouble()/((double)tsdiff));}RTPTime RTPSourceData::INF_GetRoundtripTime() const{	if (!RRinf.HasInfo())		return RTPTime(0,0);	if (RRinf.GetDelaySinceLastSR() == 0 && RRinf.GetLastSRTimestamp() == 0)		return RTPTime(0,0);	RTPNTPTime recvtime = RRinf.GetReceiveTime().GetNTPTime();	uint32_t rtt = ((recvtime.GetMSW()&0xFFFF)<<16)|((recvtime.GetLSW()>>16)&0xFFFF);	rtt -= RRinf.GetLastSRTimestamp();	rtt -= RRinf.GetDelaySinceLastSR();	double drtt = (((double)rtt)/65536.0);	return RTPTime(drtt);}#ifdef RTPDEBUGvoid RTPSourceData::Dump(){	std::cout << "Source data for SSRC:     " << ssrc << std::endl;	std::cout << "    Active:               " << ((IsActive())?"Yes":"No") << std::endl;	std::cout << "    Sender:               " << ((issender)?"Yes":"No") << std::endl;	std::cout << "    CSRC:                 " << ((iscsrc)?"Yes":"No") << std::endl;	std::cout << "    Received bye:         " << ((receivedbye)?"Yes":"No") << std::endl;	std::cout << "    ProcessedInRTCP:      " << ((processedinrtcp)?"Yes":"No") << std::endl;	std::cout << "    Timestamp unit:       " << timestampunit << std::endl;	std::cout << "    RTP address:          ";	if (!isrtpaddrset)		std::cout << "Not set" << std::endl;	else	{		if (rtpaddr == 0)			std::cout << "Own session" << std::endl;		else			std::cout << rtpaddr->GetAddressString() << std::endl;	}	std::cout << "    RTCP address:         ";	if (!isrtcpaddrset)		std::cout << "Not set" << std::endl;	else	{		if (rtcpaddr == 0)			std::cout << "Own session" << std::endl;		else			std::cout << rtcpaddr->GetAddressString() << std::endl;	}	if (SRinf.HasInfo())	{		if (!SRprevinf.HasInfo())		{			std::cout << "    SR Info:" << std::endl;			std::cout << "        NTP timestamp:    " << SRinf.GetNTPTimestamp().GetMSW() << ":" << SRinf.GetNTPTimestamp().GetLSW() << std::endl;			std::cout << "        RTP timestamp:    " << SRinf.GetRTPTimestamp() << std::endl;			std::cout << "        Packet count:     " << SRinf.GetPacketCount() << std::endl;			std::cout << "        Octet count:      " << SRinf.GetByteCount() << std::endl;			std::cout << "        Receive time:     " << SRinf.GetReceiveTime().GetSeconds() << std::endl;		}			else		{			std::cout << "    SR Info:" << std::endl;			std::cout << "        NTP timestamp:    " << SRinf.GetNTPTimestamp().GetMSW() << ":" << SRinf.GetNTPTimestamp().GetLSW()				  << " (" << SRprevinf.GetNTPTimestamp().GetMSW() << ":" << SRprevinf.GetNTPTimestamp().GetLSW() << ")" << std::endl;			std::cout << "        RTP timestamp:    " << SRinf.GetRTPTimestamp()			          << " (" << SRprevinf.GetRTPTimestamp() << ")" << std::endl;			std::cout << "        Packet count:     " << SRinf.GetPacketCount()			          << " (" << SRprevinf.GetPacketCount() << ")" << std::endl;			std::cout << "        Octet count:      " << SRinf.GetByteCount() 			          << " (" << SRprevinf.GetByteCount() <<")" << std::endl;			std::cout << "        Receive time:     " << SRinf.GetReceiveTime().GetSeconds()			          << " (" << SRprevinf.GetReceiveTime().GetSeconds() << ")" << std::endl;		}	}	if (RRinf.HasInfo())	{		if (!RRprevinf.HasInfo())		{			std::cout << "    RR Info:" << std::endl;			std::cout << "        Fraction lost:    " << RRinf.GetFractionLost() << std::endl;			std::cout << "        Packets lost:     " << RRinf.GetPacketsLost() << std::endl;			std::cout << "        Ext.High.Seq:     " << RRinf.GetExtendedHighestSequenceNumber() << std::endl;			std::cout << "        Jitter:           " << RRinf.GetJitter() << std::endl;			std::cout << "        LSR:              " << RRinf.GetLastSRTimestamp() << std::endl;			std::cout << "        DLSR:             " << RRinf.GetDelaySinceLastSR() << std::endl;			std::cout << "        Receive time:     " << RRinf.GetReceiveTime().GetSeconds() << std::endl;		}		else		{			std::cout << "    RR Info:" << std::endl;			std::cout << "        Fraction lost:    " << RRinf.GetFractionLost() 				  << " (" << RRprevinf.GetFractionLost() << ")" << std::endl;			std::cout << "        Packets lost:     " << RRinf.GetPacketsLost() 			          << " (" << RRprevinf.GetPacketsLost() << ")" << std::endl;			std::cout << "        Ext.High.Seq:     " << RRinf.GetExtendedHighestSequenceNumber() 			          << " (" << RRprevinf.GetExtendedHighestSequenceNumber() << ")" << std::endl;			std::cout << "        Jitter:           " << RRinf.GetJitter() 			          << " (" << RRprevinf.GetJitter() << ")" << std::endl;			std::cout << "        LSR:              " << RRinf.GetLastSRTimestamp() 			          << " (" << RRprevinf.GetLastSRTimestamp() << ")" << std::endl;			std::cout << "        DLSR:             " << RRinf.GetDelaySinceLastSR() 			          << " (" << RRprevinf.GetDelaySinceLastSR() << ")" << std::endl;			std::cout << "        Receive time:     " << RRinf.GetReceiveTime().GetSeconds() 			          << " (" << RRprevinf.GetReceiveTime().GetSeconds() <<")" << std::endl;		}	}	std::cout << "    Stats:" << std::endl;	std::cout << "        Sent data:        " << ((stats.HasSentData())?"Yes":"No") << std::endl;	std::cout << "        Packets received: " << stats.GetNumPacketsReceived() << std::endl;	std::cout << "        Seq. base:        " << stats.GetBaseSequenceNumber() << std::endl;	std::cout << "        Ext.High.Seq:     " << stats.GetExtendedHighestSequenceNumber() << std::endl;	std::cout << "        Jitter:           " << stats.GetJitter() << std::endl;	std::cout << "        New packets:      " << stats.GetNumPacketsReceivedInInterval() << std::endl;		std::cout << "        Saved seq. nr.:   " << stats.GetSavedExtendedSequenceNumber() << std::endl;		std::cout << "        RTT:              " << INF_GetRoundtripTime().GetDouble() << " seconds" << std::endl;	if (INF_GetEstimatedTimestampUnit() > 0)		std::cout << "        Estimated:        " << (1.0/INF_GetEstimatedTimestampUnit()) << " samples per second" << std::endl;	std::cout << "    SDES Info:" << std::endl;	size_t len;	char str[1024];	uint8_t *val;		if ((val = SDESinf.GetCNAME(&len)) != 0)	{		memcpy(str,val,len);		str[len] = 0;		std::cout << "        CNAME:            " << std::string(str) << std::endl;	}	if ((val = SDESinf.GetName(&len)) != 0)	{		memcpy(str,val,len);		str[len] = 0;		std::cout << "        Name:             " << std::string(str) << std::endl;	}	if ((val = SDESinf.GetEMail(&len)) != 0)	{		memcpy(str,val,len);		str[len] = 0;		std::cout << "        EMail:            " << std::string(str) << std::endl;	}	if ((val = SDESinf.GetPhone(&len)) != 0)	{		memcpy(str,val,len);		str[len] = 0;		std::cout << "        phone:            " << std::string(str) << std::endl;	}	if ((val = SDESinf.GetLocation(&len)) != 0)	{		memcpy(str,val,len);		str[len] = 0;		std::cout << "        Location:         " << std::string(str) << std::endl;	}	if ((val = SDESinf.GetTool(&len)) != 0)	{		memcpy(str,val,len);		str[len] = 0;		std::cout << "        Tool:             " << std::string(str) << std::endl;	}		if ((val = SDESinf.GetNote(&len)) != 0)	{		memcpy(str,val,len);		str[len] = 0;		std::cout << "        Note:             " << std::string(str) << std::endl;	}#ifdef RTP_SUPPORT_SDESPRIV	SDESinf.GotoFirstPrivateValue();	uint8_t *pref;	size_t preflen;	while (SDESinf.GetNextPrivateValue(&pref,&preflen,&val,&len))	{		char prefstr[1024];		memcpy(prefstr,pref,preflen);		memcpy(str,val,len);		prefstr[preflen] = 0;		str[len] = 0;		std::cout << "        Private:          " << std::string(prefstr) << ":" << std::string(str) << std::endl;	}#endif // RTP_SUPPORT_SDESPRIV	if (byereason)	{		memcpy(str,byereason,byereasonlen);		str[byereasonlen] = 0;		std::cout << "    BYE Reason:           " << std::string(str) << std::endl;	}}#endif // RTPDEBUG