/*  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 "rtpinternalsourcedata.h"#include "rtppacket.h"#include <string.h>#include "rtpdebug.h"#define RTPINTERNALSOURCEDATA_MAXPROBATIONPACKETS		32RTPInternalSourceData::RTPInternalSourceData(uint32_t ssrc,RTPSources::ProbationType probtype,RTPMemoryManager *mgr):RTPSourceData(ssrc,mgr){#ifdef RTP_SUPPORT_PROBATION	probationtype = probtype;#endif // RTP_SUPPORT_PROBATION}RTPInternalSourceData::~RTPInternalSourceData(){}// The following function should delete rtppack if necessaryint RTPInternalSourceData::ProcessRTPPacket(RTPPacket *rtppack,const RTPTime &receivetime,bool *stored){	bool accept,onprobation,applyprobation;	double tsunit;		*stored = false;		if (timestampunit < 0) 		tsunit = INF_GetEstimatedTimestampUnit();	else		tsunit = timestampunit;#ifdef RTP_SUPPORT_PROBATION	if (validated) 				// If the source is our own process, we can already be validated. No 		applyprobation = false;		// probation should be applied in that case.	else	{		if (probationtype == RTPSources::NoProbation)			applyprobation = false;		else			applyprobation = true;	}#else	applyprobation = false;#endif // RTP_SUPPORT_PROBATION	stats.ProcessPacket(rtppack,receivetime,tsunit,ownssrc,&accept,applyprobation,&onprobation);#ifdef RTP_SUPPORT_PROBATION	switch (probationtype)	{		case RTPSources::ProbationStore:			if (!(onprobation || accept))				return 0;			if (accept)				validated = true;			break;		case RTPSources::ProbationDiscard:		case RTPSources::NoProbation:			if (!accept)				return 0;			validated = true;			break;		default:			return ERR_RTP_INTERNALSOURCEDATA_INVALIDPROBATIONTYPE;	}#else	if (!accept)		return 0;	validated = true;#endif // RTP_SUPPORT_PROBATION;		if (validated && !ownssrc) // for own ssrc these variables depend on the outgoing packets, not on the incoming		issender = true;		// Now, we can place the packet in the queue		if (packetlist.empty())	{		*stored = true;		packetlist.push_back(rtppack);		return 0;	}		if (!validated) // still on probation	{		// Make sure that we don't buffer too much packets to avoid wasting memory		// on a bad source. Delete the packet in the queue with the lowest sequence		// number.		if (packetlist.size() == RTPINTERNALSOURCEDATA_MAXPROBATIONPACKETS)		{			RTPPacket *p = *(packetlist.begin());			packetlist.pop_front();			RTPDelete(p,GetMemoryManager());		}	}	// find the right position to insert the packet		std::list<RTPPacket*>::iterator it,start;	bool done = false;	uint32_t newseqnr = rtppack->GetExtendedSequenceNumber();		it = packetlist.end();	--it;	start = packetlist.begin();		while (!done)	{		RTPPacket *p;		uint32_t seqnr;				p = *it;		seqnr = p->GetExtendedSequenceNumber();		if (seqnr > newseqnr)		{			if (it != start)				--it;			else // we're at the start of the list			{				*stored = true;				done = true;				packetlist.push_front(rtppack);			}		}		else if (seqnr < newseqnr) // insert after this packet		{			++it;			packetlist.insert(it,rtppack);			done = true;			*stored = true;		}		else // they're equal !! Drop packet		{			done = true;		}	}	return 0;}int RTPInternalSourceData::ProcessSDESItem(uint8_t sdesid,const uint8_t *data,size_t itemlen,const RTPTime &receivetime,bool *cnamecollis){	*cnamecollis = false;		stats.SetLastMessageTime(receivetime);		switch(sdesid)	{	case RTCP_SDES_ID_CNAME:		{			size_t curlen;			uint8_t *oldcname;						// NOTE: we're going to make sure that the CNAME is only set once.			oldcname = SDESinf.GetCNAME(&curlen);			if (curlen == 0)			{				// if CNAME is set, the source is validated				SDESinf.SetCNAME(data,itemlen);				validated = true;			}			else // check if this CNAME is equal to the one that is already present			{				if (curlen != itemlen)					*cnamecollis = true;				else				{					if (memcmp(data,oldcname,itemlen) != 0)						*cnamecollis = true;				}			}		}		break;	case RTCP_SDES_ID_NAME:		{			uint8_t *oldname;			size_t oldlen;			oldname = SDESinf.GetName(&oldlen);			if (oldlen == 0) // Name not set				return SDESinf.SetName(data,itemlen);		}		break;	case RTCP_SDES_ID_EMAIL:		{			uint8_t *oldemail;			size_t oldlen;			oldemail = SDESinf.GetEMail(&oldlen);			if (oldlen == 0)				return SDESinf.SetEMail(data,itemlen);		}		break;	case RTCP_SDES_ID_PHONE:		return SDESinf.SetPhone(data,itemlen);	case RTCP_SDES_ID_LOCATION:		return SDESinf.SetLocation(data,itemlen);	case RTCP_SDES_ID_TOOL:		{			uint8_t *oldtool;			size_t oldlen;			oldtool = SDESinf.GetTool(&oldlen);			if (oldlen == 0)				return SDESinf.SetTool(data,itemlen);		}		break;	case RTCP_SDES_ID_NOTE:		stats.SetLastNoteTime(receivetime);		return SDESinf.SetNote(data,itemlen);	}	return 0;}#ifdef RTP_SUPPORT_SDESPRIVint RTPInternalSourceData::ProcessPrivateSDESItem(const uint8_t *prefix,size_t prefixlen,const uint8_t *value,size_t valuelen,const RTPTime &receivetime){	int status;		stats.SetLastMessageTime(receivetime);	status = SDESinf.SetPrivateValue(prefix,prefixlen,value,valuelen);	if (status == ERR_RTP_SDES_MAXPRIVITEMS)		return 0; // don't stop processing just because the number of items is full	return status;}#endif // RTP_SUPPORT_SDESPRIVint RTPInternalSourceData::ProcessBYEPacket(const uint8_t *reason,size_t reasonlen,const RTPTime &receivetime){	if (byereason)	{		RTPDeleteByteArray(byereason,GetMemoryManager());		byereason = 0;		byereasonlen = 0;	}	byetime = receivetime;	byereason = RTPNew(GetMemoryManager(),RTPMEM_TYPE_BUFFER_RTCPBYEREASON) uint8_t[reasonlen];	if (byereason == 0)		return ERR_RTP_OUTOFMEM;	memcpy(byereason,reason,reasonlen);	byereasonlen = reasonlen;	receivedbye = true;	stats.SetLastMessageTime(receivetime);	return 0;}