rtcpbyepacket.h

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00001 /*
00002 
00003   This file is a part of JRTPLIB
00004   Copyright (c) 1999-2007 Jori Liesenborgs
00005 
00006   Contact: jori.liesenborgs@gmail.com
00007 
00008   This library was developed at the "Expertisecentrum Digitale Media"
00009   (http://www.edm.uhasselt.be), a research center of the Hasselt University
00010   (http://www.uhasselt.be). The library is based upon work done for 
00011   my thesis at the School for Knowledge Technology (Belgium/The Netherlands).
00012 
00013   Permission is hereby granted, free of charge, to any person obtaining a
00014   copy of this software and associated documentation files (the "Software"),
00015   to deal in the Software without restriction, including without limitation
00016   the rights to use, copy, modify, merge, publish, distribute, sublicense,
00017   and/or sell copies of the Software, and to permit persons to whom the
00018   Software is furnished to do so, subject to the following conditions:
00019 
00020   The above copyright notice and this permission notice shall be included
00021   in all copies or substantial portions of the Software.
00022 
00023   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
00024   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00025   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
00026   THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00027   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
00028   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
00029   IN THE SOFTWARE.
00030 
00031 */
00032 
00037 #ifndef RTCPBYEPACKET_H
00038 
00039 #define RTCPBYEPACKET_H
00040 
00041 #include "rtpconfig.h"
00042 #include "rtcppacket.h"
00043 #include "rtpstructs.h"
00044 #if ! (defined(WIN32) || defined (_WIN32_WCE))
00045         #include <netinet/in.h>
00046 #endif // WIN32
00047 
00048 class RTCPCompoundPacket;
00049 
00051 class RTCPBYEPacket : public RTCPPacket
00052 {
00053 public:
00059         RTCPBYEPacket(uint8_t *data,size_t datalen);
00060         ~RTCPBYEPacket()                                                        { }
00061         
00063         int GetSSRCCount() const;
00064 
00068         uint32_t GetSSRC(int index) const; // note: no check is performed to see if index is valid!
00069 
00071         bool HasReasonForLeaving() const;
00072 
00074         size_t GetReasonLength() const;
00075 
00077         uint8_t *GetReasonData();
00078 
00079 #ifdef RTPDEBUG
00080         void Dump();
00081 #endif // RTPDEBUG
00082 private:
00083         size_t reasonoffset;
00084 };
00085                       
00086 inline int RTCPBYEPacket::GetSSRCCount() const
00087 {
00088         if (!knownformat)
00089                 return 0;
00090 
00091         RTCPCommonHeader *hdr = (RTCPCommonHeader *)data;
00092         return (int)(hdr->count);
00093 }
00094 
00095 inline uint32_t RTCPBYEPacket::GetSSRC(int index) const
00096 {
00097         if (!knownformat)
00098                 return 0;
00099         uint32_t *ssrc = (uint32_t *)(data+sizeof(RTCPCommonHeader)+sizeof(uint32_t)*index);
00100         return ntohl(*ssrc);
00101 }
00102 
00103 inline bool RTCPBYEPacket::HasReasonForLeaving() const
00104 {
00105         if (!knownformat)
00106                 return false;
00107         if (reasonoffset == 0)
00108                 return false;
00109         return true;
00110 }
00111 
00112 inline size_t RTCPBYEPacket::GetReasonLength() const
00113 {
00114         if (!knownformat)
00115                 return 0;
00116         if (reasonoffset == 0)
00117                 return 0;
00118         uint8_t *reasonlen = (data+reasonoffset);
00119         return (size_t)(*reasonlen);
00120 }
00121 
00122 inline uint8_t *RTCPBYEPacket::GetReasonData()
00123 {
00124         if (!knownformat)
00125                 return 0;
00126         if (reasonoffset == 0)
00127                 return 0;
00128         uint8_t *reasonlen = (data+reasonoffset);
00129         if ((*reasonlen) == 0)
00130                 return 0;
00131         return (data+reasonoffset+1);   
00132 }
00133 
00134 #endif // RTCPBYEPACKET_H
00135 

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