175 lines
7.6 KiB
C++
175 lines
7.6 KiB
C++
/*
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This file is a part of JRTPLIB
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Copyright (c) 1999-2005 Jori Liesenborgs
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Contact: jori@lumumba.uhasselt.be
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This library was developed at the "Expertisecentrum Digitale Media"
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(http://www.edm.uhasselt.be), a research center of the Hasselt University
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(http://www.uhasselt.be). The library is based upon work done for
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my thesis at the School for Knowledge Technology (Belgium/The Netherlands).
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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IN THE SOFTWARE.
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*/
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#ifndef RTPSOURCES_H
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#define RTPSOURCES_H
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#include "rtpconfig.h"
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#include "rtpkeyhashtable.h"
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#include "rtcpsdespacket.h"
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#include "rtptypes.h"
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#define RTPSOURCES_HASHSIZE 8317
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#ifdef RTP_SUPPORT_INLINETEMPLATEPARAM
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inline int RTPSources_GetHashIndex(const u_int32_t &ssrc) { return ssrc%RTPSOURCES_HASHSIZE; }
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#else // can't use inline function as template parameter
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int RTPSources_GetHashIndex(const u_int32_t &ssrc);
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#endif // RTP_SUPPORT_INLINETEMPLATEPARAM
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class RTPNTPTime;
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class RTPTransmitter;
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class RTCPAPPPacket;
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class RTPInternalSourceData;
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class RTPRawPacket;
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class RTPPacket;
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class RTPTime;
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class RTPAddress;
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class RTPSourceData;
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class RTPSources
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{
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public:
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enum ProbationType { NoProbation, ProbationDiscard, ProbationStore };
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RTPSources(ProbationType = ProbationStore);
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virtual ~RTPSources();
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void Clear();
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#ifdef RTP_SUPPORT_PROBATION
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void SetProbationType(ProbationType probtype) { probationtype = probtype; }
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#endif // RTP_SUPPORT_PROBATION
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int CreateOwnSSRC(u_int32_t ssrc);
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int DeleteOwnSSRC();
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void SentRTPPacket();
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int ProcessRawPacket(RTPRawPacket *rawpack,RTPTransmitter *trans,bool acceptownpackets);
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int ProcessRawPacket(RTPRawPacket *rawpack,RTPTransmitter *trans[],int numtrans,bool acceptownpackets);
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// Note: if the packet originated from our own session, senderaddress has to be NULL
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int ProcessRTPPacket(RTPPacket *rtppack,const RTPTime &receivetime,const RTPAddress *senderaddress,bool *stored);
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int ProcessRTCPCompoundPacket(RTCPCompoundPacket *rtcpcomppack,const RTPTime &receivetime,
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const RTPAddress *senderaddress);
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int ProcessRTCPSenderInfo(u_int32_t ssrc,const RTPNTPTime &ntptime,u_int32_t rtptime,
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u_int32_t packetcount,u_int32_t octetcount,const RTPTime &receivetime,
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const RTPAddress *senderaddress);
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int ProcessRTCPReportBlock(u_int32_t ssrc,u_int8_t fractionlost,int32_t lostpackets,
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u_int32_t exthighseqnr,u_int32_t jitter,u_int32_t lsr,
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u_int32_t dlsr,const RTPTime &receivetime,const RTPAddress *senderaddress);
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int ProcessSDESNormalItem(u_int32_t ssrc,RTCPSDESPacket::ItemType t,size_t itemlength,
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const void *itemdata,const RTPTime &receivetime,const RTPAddress *senderaddress);
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#ifdef RTP_SUPPORT_SDESPRIV
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int ProcessSDESPrivateItem(u_int32_t ssrc,size_t prefixlen,const void *prefixdata,
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size_t valuelen,const void *valuedata,const RTPTime &receivetime,
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const RTPAddress *senderaddress);
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#endif //RTP_SUPPORT_SDESPRIV
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int ProcessBYE(u_int32_t ssrc,size_t reasonlength,const void *reasondata,const RTPTime &receivetime,
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const RTPAddress *senderaddress);
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// If no specific info was sent to us, but we did receive a packet from a SSRC, the following
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// function can be used to update the time at which we last heard something from the SSRC.
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// This way, premature timeouts can be avoided.
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int UpdateReceiveTime(u_int32_t ssrc,const RTPTime &receivetime,const RTPAddress *senderaddress);
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bool GotoFirstSource();
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bool GotoNextSource();
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bool GotoPreviousSource();
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bool GotoFirstSourceWithData();
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bool GotoNextSourceWithData();
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bool GotoPreviousSourceWithData();
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RTPSourceData *GetCurrentSourceInfo();
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RTPSourceData *GetSourceInfo(u_int32_t ssrc);
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RTPPacket *GetNextPacket();
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bool GotEntry(u_int32_t ssrc);
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RTPSourceData *GetOwnSourceInfo() { return (RTPSourceData *)owndata; }
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void Timeout(const RTPTime &curtime,const RTPTime &timeoutdelay);
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void SenderTimeout(const RTPTime &curtime,const RTPTime &timeoutdelay);
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void BYETimeout(const RTPTime &curtime,const RTPTime &timeoutdelay);
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void NoteTimeout(const RTPTime &curtime,const RTPTime &timeoutdelay);
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void MultipleTimeouts(const RTPTime &curtime,const RTPTime &sendertimeout,
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const RTPTime &byetimeout,const RTPTime &generaltimeout,
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const RTPTime ¬etimeout);
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int GetSenderCount() const { return sendercount; }
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int GetTotalCount() const { return totalcount; }
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int GetActiveMemberCount() const { return activecount; }
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#ifdef RTPDEBUG
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void Dump();
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void SafeCountTotal();
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void SafeCountSenders();
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void SafeCountActive();
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#endif // RTPDEBUG
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protected:
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virtual void OnRTPPacket(RTPPacket *pack,const RTPTime &receivetime,
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const RTPAddress *senderaddress) { }
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virtual void OnRTCPCompoundPacket(RTCPCompoundPacket *pack,const RTPTime &receivetime,
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const RTPAddress *senderaddress) { }
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virtual void OnSSRCCollision(RTPSourceData *srcdat,const RTPAddress *senderaddress,bool isrtp) { }
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virtual void OnCNAMECollision(RTPSourceData *srcdat,const RTPAddress *senderaddress,
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const u_int8_t *cname,size_t cnamelength) { }
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virtual void OnNewSource(RTPSourceData *srcdat) { }
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virtual void OnRemoveSource(RTPSourceData *srcdat) { }
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virtual void OnTimeout(RTPSourceData *srcdat) { }
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virtual void OnBYETimeout(RTPSourceData *srcdat) { }
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virtual void OnBYEPacket(RTPSourceData *srcdat) { }
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virtual void OnAPPPacket(RTCPAPPPacket *apppacket,const RTPTime &receivetime,
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const RTPAddress *senderaddress) { }
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virtual void OnUnknownPacketType(RTCPPacket *rtcppack,const RTPTime &receivetime,
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const RTPAddress *senderaddress) { }
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virtual void OnUnknownPacketFormat(RTCPPacket *rtcppack,const RTPTime &receivetime,
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const RTPAddress *senderaddress) { }
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virtual void OnNoteTimeout(RTPSourceData *srcdat) { }
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private:
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void ClearSourceList();
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int ObtainSourceDataInstance(u_int32_t ssrc,RTPInternalSourceData **srcdat,bool *created);
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int GetRTCPSourceData(u_int32_t ssrc,const RTPAddress *senderaddress,RTPInternalSourceData **srcdat,bool *newsource);
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bool CheckCollision(RTPInternalSourceData *srcdat,const RTPAddress *senderaddress,bool isrtp);
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RTPKeyHashTable<const u_int32_t,RTPInternalSourceData*,RTPSources_GetHashIndex,RTPSOURCES_HASHSIZE> sourcelist;
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int sendercount;
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int totalcount;
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int activecount;
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#ifdef RTP_SUPPORT_PROBATION
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ProbationType probationtype;
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#endif // RTP_SUPPORT_PROBATION
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RTPInternalSourceData *owndata;
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};
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#endif // RTPSOURCES_H
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