qrtplib: removed debug

2026-06-01 21:54:55 -04:00 · 2018-02-27 01:35:16 +01:00
parent 7f067da9cc
commit 30d019d39a
102 changed files with 29077 additions and 0 deletions
@@ -0,0 +1,737 @@
+/*
+
+  This file is a part of JRTPLIB
+  Copyright (c) 1999-2017 Jori Liesenborgs
+
+  Contact: jori.liesenborgs@gmail.com
+
+  This library was developed at the Expertise Centre for Digital 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 "rtcppacketbuilder.h"
+#include "rtpsources.h"
+#include "rtppacketbuilder.h"
+#include "rtcpscheduler.h"
+#include "rtpsourcedata.h"
+#include "rtcpcompoundpacketbuilder.h"
+#include "rtpmemorymanager.h"
+
+namespace qrtplib
+{
+
+RTCPPacketBuilder::RTCPPacketBuilder(RTPSources &s,RTPPacketBuilder &pb,RTPMemoryManager *mgr)
+	: RTPMemoryObject(mgr),sources(s),rtppacketbuilder(pb),prevbuildtime(0,0),transmissiondelay(0,0),ownsdesinfo(mgr)
+{
+	init = false;
+	timeinit.Dummy();
+}
+
+RTCPPacketBuilder::~RTCPPacketBuilder()
+{
+	Destroy();
+}
+
+int RTCPPacketBuilder::Init(size_t maxpacksize,double tsunit,const void *cname,size_t cnamelen)
+{
+	if (init)
+		return ERR_RTP_RTCPPACKETBUILDER_ALREADYINIT;
+	if (maxpacksize < RTP_MINPACKETSIZE)
+		return ERR_RTP_RTCPPACKETBUILDER_ILLEGALMAXPACKSIZE;
+	if (tsunit < 0.0)
+		return ERR_RTP_RTCPPACKETBUILDER_ILLEGALTIMESTAMPUNIT;
+
+	if (cnamelen>255)
+		cnamelen = 255;
+
+	maxpacketsize = maxpacksize;
+	timestampunit = tsunit;
+
+	int status;
+
+	if ((status = ownsdesinfo.SetCNAME((const uint8_t *)cname,cnamelen)) < 0)
+		return status;
+
+	ClearAllSourceFlags();
+
+	interval_name = -1;
+	interval_email = -1;
+	interval_location = -1;
+	interval_phone = -1;
+	interval_tool = -1;
+	interval_note = -1;
+
+	sdesbuildcount = 0;
+	transmissiondelay = RTPTime(0,0);
+
+	firstpacket = true;
+	processingsdes = false;
+	init = true;
+	return 0;
+}
+
+void RTCPPacketBuilder::Destroy()
+{
+	if (!init)
+		return;
+	ownsdesinfo.Clear();
+	init = false;
+}
+
+int RTCPPacketBuilder::BuildNextPacket(RTCPCompoundPacket **pack)
+{
+	if (!init)
+		return ERR_RTP_RTCPPACKETBUILDER_NOTINIT;
+
+	RTCPCompoundPacketBuilder *rtcpcomppack;
+	int status;
+	bool sender = false;
+	RTPSourceData *srcdat;
+
+	*pack = 0;
+
+	rtcpcomppack = RTPNew(GetMemoryManager(),RTPMEM_TYPE_CLASS_RTCPCOMPOUNDPACKETBUILDER) RTCPCompoundPacketBuilder(GetMemoryManager());
+	if (rtcpcomppack == 0)
+		return ERR_RTP_OUTOFMEM;
+
+	if ((status = rtcpcomppack->InitBuild(maxpacketsize)) < 0)
+	{
+		RTPDelete(rtcpcomppack,GetMemoryManager());
+		return status;
+	}
+
+	if ((srcdat = sources.GetOwnSourceInfo()) != 0)
+	{
+		if (srcdat->IsSender())
+			sender = true;
+	}
+
+	uint32_t ssrc = rtppacketbuilder.GetSSRC();
+	RTPTime curtime = RTPTime::CurrentTime();
+
+	if (sender)
+	{
+		RTPTime rtppacktime = rtppacketbuilder.GetPacketTime();
+		uint32_t rtppacktimestamp = rtppacketbuilder.GetPacketTimestamp();
+		uint32_t packcount = rtppacketbuilder.GetPacketCount();
+		uint32_t octetcount = rtppacketbuilder.GetPayloadOctetCount();
+		RTPTime diff = curtime;
+		diff -= rtppacktime;
+		diff += transmissiondelay; // the sample being sampled at this very instant will need a larger timestamp
+
+		uint32_t tsdiff = (uint32_t)((diff.GetDouble()/timestampunit)+0.5);
+		uint32_t rtptimestamp = rtppacktimestamp+tsdiff;
+		RTPNTPTime ntptimestamp = curtime.GetNTPTime();
+
+		if ((status = rtcpcomppack->StartSenderReport(ssrc,ntptimestamp,rtptimestamp,packcount,octetcount)) < 0)
+		{
+			RTPDelete(rtcpcomppack,GetMemoryManager());
+			if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+				return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+			return status;
+		}
+	}
+	else
+	{
+		if ((status = rtcpcomppack->StartReceiverReport(ssrc)) < 0)
+		{
+			RTPDelete(rtcpcomppack,GetMemoryManager());
+			if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+				return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+			return status;
+		}
+	}
+
+	uint8_t *owncname;
+	size_t owncnamelen;
+
+	owncname = ownsdesinfo.GetCNAME(&owncnamelen);
+
+	if ((status = rtcpcomppack->AddSDESSource(ssrc)) < 0)
+	{
+		RTPDelete(rtcpcomppack,GetMemoryManager());
+		if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+			return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+		return status;
+	}
+	if ((status = rtcpcomppack->AddSDESNormalItem(RTCPSDESPacket::CNAME,owncname,owncnamelen)) < 0)
+	{
+		RTPDelete(rtcpcomppack,GetMemoryManager());
+		if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+			return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+		return status;
+	}
+
+	if (!processingsdes)
+	{
+		int added,skipped;
+		bool full,atendoflist;
+
+		if ((status = FillInReportBlocks(rtcpcomppack,curtime,sources.GetTotalCount(),&full,&added,&skipped,&atendoflist)) < 0)
+		{
+			RTPDelete(rtcpcomppack,GetMemoryManager());
+			return status;
+		}
+
+		if (full && added == 0)
+		{
+			RTPDelete(rtcpcomppack,GetMemoryManager());
+			return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+		}
+
+		if (!full)
+		{
+			processingsdes = true;
+			sdesbuildcount++;
+
+			ClearAllSourceFlags();
+
+			doname = false;
+			doemail = false;
+			doloc = false;
+			dophone = false;
+			dotool = false;
+			donote = false;
+			if (interval_name > 0 && ((sdesbuildcount%interval_name) == 0)) doname = true;
+			if (interval_email > 0 && ((sdesbuildcount%interval_email) == 0)) doemail = true;
+			if (interval_location > 0 && ((sdesbuildcount%interval_location) == 0)) doloc = true;
+			if (interval_phone > 0 && ((sdesbuildcount%interval_phone) == 0)) dophone = true;
+			if (interval_tool > 0 && ((sdesbuildcount%interval_tool) == 0)) dotool = true;
+			if (interval_note > 0 && ((sdesbuildcount%interval_note) == 0)) donote = true;
+
+			bool processedall;
+			int itemcount;
+
+			if ((status = FillInSDES(rtcpcomppack,&full,&processedall,&itemcount)) < 0)
+			{
+				RTPDelete(rtcpcomppack,GetMemoryManager());
+				return status;
+			}
+
+			if (processedall)
+			{
+				processingsdes = false;
+				ClearAllSDESFlags();
+				if (!full && skipped > 0)
+				{
+					// if the packet isn't full and we skipped some
+				        // sources that we already got in a previous packet,
+					// we can add some of them now
+
+					bool atendoflist;
+
+					if ((status = FillInReportBlocks(rtcpcomppack,curtime,skipped,&full,&added,&skipped,&atendoflist)) < 0)
+					{
+						RTPDelete(rtcpcomppack,GetMemoryManager());
+						return status;
+					}
+				}
+			}
+		}
+	}
+	else // previous sdes processing wasn't finished
+	{
+		bool processedall;
+		int itemcount;
+		bool full;
+
+		if ((status = FillInSDES(rtcpcomppack,&full,&processedall,&itemcount)) < 0)
+		{
+			RTPDelete(rtcpcomppack,GetMemoryManager());
+			return status;
+		}
+
+		if (itemcount == 0) // Big problem: packet size is too small to let any progress happen
+		{
+			RTPDelete(rtcpcomppack,GetMemoryManager());
+			return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+		}
+
+		if (processedall)
+		{
+			processingsdes = false;
+			ClearAllSDESFlags();
+			if (!full)
+			{
+				// if the packet isn't full and we skipped some
+				// we can add some report blocks
+
+				int added,skipped;
+				bool atendoflist;
+
+				if ((status = FillInReportBlocks(rtcpcomppack,curtime,sources.GetTotalCount(),&full,&added,&skipped,&atendoflist)) < 0)
+				{
+					RTPDelete(rtcpcomppack,GetMemoryManager());
+					return status;
+				}
+				if (atendoflist) // filled in all possible sources
+					ClearAllSourceFlags();
+			}
+		}
+	}
+
+	if ((status = rtcpcomppack->EndBuild()) < 0)
+	{
+		RTPDelete(rtcpcomppack,GetMemoryManager());
+		return status;
+	}
+
+	*pack = rtcpcomppack;
+	firstpacket = false;
+	prevbuildtime = curtime;
+	return 0;
+}
+
+void RTCPPacketBuilder::ClearAllSourceFlags()
+{
+	if (sources.GotoFirstSource())
+	{
+		do
+		{
+			RTPSourceData *srcdat = sources.GetCurrentSourceInfo();
+			srcdat->SetProcessedInRTCP(false);
+		} while (sources.GotoNextSource());
+	}
+}
+
+int RTCPPacketBuilder::FillInReportBlocks(RTCPCompoundPacketBuilder *rtcpcomppack,const RTPTime &curtime,int maxcount,bool *full,int *added,int *skipped,bool *atendoflist)
+{
+	RTPSourceData *srcdat;
+	int addedcount = 0;
+	int skippedcount = 0;
+	bool done = false;
+	bool filled = false;
+	bool atend = false;
+	int status;
+
+	if (sources.GotoFirstSource())
+	{
+		do
+		{
+			bool shouldprocess = false;
+
+			srcdat = sources.GetCurrentSourceInfo();
+			if (!srcdat->IsOwnSSRC()) // don't send to ourselves
+			{
+				if (!srcdat->IsCSRC()) // p 35: no reports should go to CSRCs
+				{
+					if (srcdat->INF_HasSentData()) // if this isn't true, INF_GetLastRTPPacketTime() won't make any sense
+					{
+						if (firstpacket)
+							shouldprocess = true;
+						else
+						{
+							// p 35: only if rtp packets were received since the last RTP packet, a report block
+							// should be added
+
+							RTPTime lastrtptime = srcdat->INF_GetLastRTPPacketTime();
+
+							if (lastrtptime > prevbuildtime)
+								shouldprocess = true;
+						}
+					}
+				}
+			}
+
+			if (shouldprocess)
+			{
+				if (srcdat->IsProcessedInRTCP()) // already covered this one
+				{
+					skippedcount++;
+				}
+				else
+				{
+					uint32_t rr_ssrc = srcdat->GetSSRC();
+					uint32_t num = srcdat->INF_GetNumPacketsReceivedInInterval();
+					uint32_t prevseq = srcdat->INF_GetSavedExtendedSequenceNumber();
+					uint32_t curseq = srcdat->INF_GetExtendedHighestSequenceNumber();
+					uint32_t expected = curseq-prevseq;
+					uint8_t fraclost;
+
+					if (expected < num) // got duplicates
+						fraclost = 0;
+					else
+					{
+						double lost = (double)(expected-num);
+						double frac = lost/((double)expected);
+						fraclost = (uint8_t)(frac*256.0);
+					}
+
+					expected = curseq-srcdat->INF_GetBaseSequenceNumber();
+					num = srcdat->INF_GetNumPacketsReceived();
+
+					uint32_t diff = expected-num;
+					int32_t *packlost = (int32_t *)&diff;
+
+					uint32_t jitter = srcdat->INF_GetJitter();
+					uint32_t lsr;
+					uint32_t dlsr;
+
+					if (!srcdat->SR_HasInfo())
+					{
+						lsr = 0;
+						dlsr = 0;
+					}
+					else
+					{
+						RTPNTPTime srtime = srcdat->SR_GetNTPTimestamp();
+						uint32_t m = (srtime.GetMSW()&0xFFFF);
+						uint32_t l = ((srtime.GetLSW()>>16)&0xFFFF);
+						lsr = ((m<<16)|l);
+
+						RTPTime diff = curtime;
+						diff -= srcdat->SR_GetReceiveTime();
+						double diff2 = diff.GetDouble();
+						diff2 *= 65536.0;
+						dlsr = (uint32_t)diff2;
+					}
+
+					status = rtcpcomppack->AddReportBlock(rr_ssrc,fraclost,*packlost,curseq,jitter,lsr,dlsr);
+					if (status < 0)
+					{
+						if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+						{
+							done = true;
+							filled = true;
+						}
+						else
+							return status;
+					}
+					else
+					{
+						addedcount++;
+						if (addedcount >= maxcount)
+						{
+							done = true;
+							if (!sources.GotoNextSource())
+								atend = true;
+						}
+						srcdat->INF_StartNewInterval();
+						srcdat->SetProcessedInRTCP(true);
+					}
+				}
+			}
+
+			if (!done)
+			{
+				if (!sources.GotoNextSource())
+				{
+					atend = true;
+					done = true;
+				}
+			}
+
+		} while (!done);
+	}
+
+	*added = addedcount;
+	*skipped = skippedcount;
+	*full = filled;
+
+	if (!atend) // search for available sources
+	{
+		bool shouldprocess = false;
+
+		do
+		{
+			srcdat = sources.GetCurrentSourceInfo();
+			if (!srcdat->IsOwnSSRC()) // don't send to ourselves
+			{
+				if (!srcdat->IsCSRC()) // p 35: no reports should go to CSRCs
+				{
+					if (srcdat->INF_HasSentData()) // if this isn't true, INF_GetLastRTPPacketTime() won't make any sense
+					{
+						if (firstpacket)
+							shouldprocess = true;
+						else
+						{
+							// p 35: only if rtp packets were received since the last RTP packet, a report block
+							// should be added
+
+							RTPTime lastrtptime = srcdat->INF_GetLastRTPPacketTime();
+
+							if (lastrtptime > prevbuildtime)
+								shouldprocess = true;
+						}
+					}
+				}
+			}
+
+			if (shouldprocess)
+			{
+				if (srcdat->IsProcessedInRTCP())
+					shouldprocess = false;
+			}
+
+			if (!shouldprocess)
+			{
+				if (!sources.GotoNextSource())
+					atend = true;
+			}
+
+		} while (!atend && !shouldprocess);
+	}
+
+	*atendoflist = atend;
+	return 0;
+}
+
+int RTCPPacketBuilder::FillInSDES(RTCPCompoundPacketBuilder *rtcpcomppack,bool *full,bool *processedall,int *added)
+{
+	int status;
+	uint8_t *data;
+	size_t datalen;
+
+	*full = false;
+	*processedall = false;
+	*added = 0;
+
+	// We don't need to add a SSRC for our own data, this is still set
+	// from adding the CNAME
+	if (doname)
+	{
+		if (!ownsdesinfo.ProcessedName())
+		{
+			data = ownsdesinfo.GetName(&datalen);
+			if ((status = rtcpcomppack->AddSDESNormalItem(RTCPSDESPacket::NAME,data,datalen)) < 0)
+			{
+				if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+				{
+					*full = true;
+					return 0;
+				}
+			}
+			(*added)++;
+			ownsdesinfo.SetProcessedName(true);
+		}
+	}
+	if (doemail)
+	{
+		if (!ownsdesinfo.ProcessedEMail())
+		{
+			data = ownsdesinfo.GetEMail(&datalen);
+			if ((status = rtcpcomppack->AddSDESNormalItem(RTCPSDESPacket::EMAIL,data,datalen)) < 0)
+			{
+				if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+				{
+					*full = true;
+					return 0;
+				}
+			}
+			(*added)++;
+			ownsdesinfo.SetProcessedEMail(true);
+		}
+	}
+	if (doloc)
+	{
+		if (!ownsdesinfo.ProcessedLocation())
+		{
+			data = ownsdesinfo.GetLocation(&datalen);
+			if ((status = rtcpcomppack->AddSDESNormalItem(RTCPSDESPacket::LOC,data,datalen)) < 0)
+			{
+				if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+				{
+					*full = true;
+					return 0;
+				}
+			}
+			(*added)++;
+			ownsdesinfo.SetProcessedLocation(true);
+		}
+	}
+	if (dophone)
+	{
+		if (!ownsdesinfo.ProcessedPhone())
+		{
+			data = ownsdesinfo.GetPhone(&datalen);
+			if ((status = rtcpcomppack->AddSDESNormalItem(RTCPSDESPacket::PHONE,data,datalen)) < 0)
+			{
+				if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+				{
+					*full = true;
+					return 0;
+				}
+			}
+			(*added)++;
+			ownsdesinfo.SetProcessedPhone(true);
+		}
+	}
+	if (dotool)
+	{
+		if (!ownsdesinfo.ProcessedTool())
+		{
+			data = ownsdesinfo.GetTool(&datalen);
+			if ((status = rtcpcomppack->AddSDESNormalItem(RTCPSDESPacket::TOOL,data,datalen)) < 0)
+			{
+				if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+				{
+					*full = true;
+					return 0;
+				}
+			}
+			(*added)++;
+			ownsdesinfo.SetProcessedTool(true);
+		}
+	}
+	if (donote)
+	{
+		if (!ownsdesinfo.ProcessedNote())
+		{
+			data = ownsdesinfo.GetNote(&datalen);
+			if ((status = rtcpcomppack->AddSDESNormalItem(RTCPSDESPacket::NOTE,data,datalen)) < 0)
+			{
+				if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+				{
+					*full = true;
+					return 0;
+				}
+			}
+			(*added)++;
+			ownsdesinfo.SetProcessedNote(true);
+		}
+	}
+
+	*processedall = true;
+	return 0;
+}
+
+void RTCPPacketBuilder::ClearAllSDESFlags()
+{
+	ownsdesinfo.ClearFlags();
+}
+
+int RTCPPacketBuilder::BuildBYEPacket(RTCPCompoundPacket **pack,const void *reason,size_t reasonlength,bool useSRifpossible)
+{
+	if (!init)
+		return ERR_RTP_RTCPPACKETBUILDER_NOTINIT;
+
+	RTCPCompoundPacketBuilder *rtcpcomppack;
+	int status;
+
+	if (reasonlength > 255)
+		reasonlength = 255;
+
+	*pack = 0;
+
+	rtcpcomppack = RTPNew(GetMemoryManager(),RTPMEM_TYPE_CLASS_RTCPCOMPOUNDPACKETBUILDER) RTCPCompoundPacketBuilder(GetMemoryManager());
+	if (rtcpcomppack == 0)
+		return ERR_RTP_OUTOFMEM;
+
+	if ((status = rtcpcomppack->InitBuild(maxpacketsize)) < 0)
+	{
+		RTPDelete(rtcpcomppack,GetMemoryManager());
+		return status;
+	}
+
+	uint32_t ssrc = rtppacketbuilder.GetSSRC();
+	bool useSR = false;
+
+	if (useSRifpossible)
+	{
+		RTPSourceData *srcdat;
+
+		if ((srcdat = sources.GetOwnSourceInfo()) != 0)
+		{
+			if (srcdat->IsSender())
+				useSR = true;
+		}
+	}
+
+	if (useSR)
+	{
+		RTPTime curtime = RTPTime::CurrentTime();
+		RTPTime rtppacktime = rtppacketbuilder.GetPacketTime();
+		uint32_t rtppacktimestamp = rtppacketbuilder.GetPacketTimestamp();
+		uint32_t packcount = rtppacketbuilder.GetPacketCount();
+		uint32_t octetcount = rtppacketbuilder.GetPayloadOctetCount();
+		RTPTime diff = curtime;
+		diff -= rtppacktime;
+
+		uint32_t tsdiff = (uint32_t)((diff.GetDouble()/timestampunit)+0.5);
+		uint32_t rtptimestamp = rtppacktimestamp+tsdiff;
+		RTPNTPTime ntptimestamp = curtime.GetNTPTime();
+
+		if ((status = rtcpcomppack->StartSenderReport(ssrc,ntptimestamp,rtptimestamp,packcount,octetcount)) < 0)
+		{
+			RTPDelete(rtcpcomppack,GetMemoryManager());
+			if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+				return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+			return status;
+		}
+	}
+	else
+	{
+		if ((status = rtcpcomppack->StartReceiverReport(ssrc)) < 0)
+		{
+			RTPDelete(rtcpcomppack,GetMemoryManager());
+			if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+				return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+			return status;
+		}
+	}
+
+	uint8_t *owncname;
+	size_t owncnamelen;
+
+	owncname = ownsdesinfo.GetCNAME(&owncnamelen);
+
+	if ((status = rtcpcomppack->AddSDESSource(ssrc)) < 0)
+	{
+		RTPDelete(rtcpcomppack,GetMemoryManager());
+		if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+			return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+		return status;
+	}
+	if ((status = rtcpcomppack->AddSDESNormalItem(RTCPSDESPacket::CNAME,owncname,owncnamelen)) < 0)
+	{
+		RTPDelete(rtcpcomppack,GetMemoryManager());
+		if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+			return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+		return status;
+	}
+
+	uint32_t ssrcs[1];
+
+	ssrcs[0] = ssrc;
+
+	if ((status = rtcpcomppack->AddBYEPacket(ssrcs,1,(const uint8_t *)reason,reasonlength)) < 0)
+	{
+		RTPDelete(rtcpcomppack,GetMemoryManager());
+		if (status == ERR_RTP_RTCPCOMPPACKBUILDER_NOTENOUGHBYTESLEFT)
+			return ERR_RTP_RTCPPACKETBUILDER_PACKETFILLEDTOOSOON;
+		return status;
+	}
+
+	if ((status = rtcpcomppack->EndBuild()) < 0)
+	{
+		RTPDelete(rtcpcomppack,GetMemoryManager());
+		return status;
+	}
+
+	*pack = rtcpcomppack;
+	return 0;
+}
+
+} // end namespace
+