1 /*
2
3 This file is a part of JRTPLIB
4 Copyright (c) 1999-2017 Jori Liesenborgs
5
6 Contact: jori.liesenborgs@gmail.com
7
8 This library was developed at the Expertise Centre for Digital Media
9 (http://www.edm.uhasselt.be), a research center of the Hasselt University
10 (http://www.uhasselt.be). The library is based upon work done for
11 my thesis at the School for Knowledge Technology (Belgium/The Netherlands).
12
13 Permission is hereby granted, free of charge, to any person obtaining a
14 copy of this software and associated documentation files (the "Software"),
15 to deal in the Software without restriction, including without limitation
16 the rights to use, copy, modify, merge, publish, distribute, sublicense,
17 and/or sell copies of the Software, and to permit persons to whom the
18 Software is furnished to do so, subject to the following conditions:
19
20 The above copyright notice and this permission notice shall be included
21 in all copies or substantial portions of the Software.
22
23 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
24 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
29 IN THE SOFTWARE.
30
31 */
32
33 #include "rtcpsrpacket.h"
34 #ifdef RTPDEBUG
35 #include <iostream>
36 #endif // RTPDEBUG
37
38 #include "rtpdebug.h"
39
40 namespace jrtplib
41 {
42
RTCPSRPacket(uint8_t * data,size_t datalength)43 RTCPSRPacket::RTCPSRPacket(uint8_t *data,size_t datalength)
44 : RTCPPacket(SR,data,datalength)
45 {
46 knownformat = false;
47
48 RTCPCommonHeader *hdr;
49 size_t len = datalength;
50 size_t expectedlength;
51
52 hdr = (RTCPCommonHeader *)data;
53 if (hdr->padding)
54 {
55 uint8_t padcount = data[datalength-1];
56 if ((padcount & 0x03) != 0) // not a multiple of four! (see rfc 3550 p 37)
57 return;
58 if (((size_t)padcount) >= len)
59 return;
60 len -= (size_t)padcount;
61 }
62
63 expectedlength = sizeof(RTCPCommonHeader)+sizeof(uint32_t)+sizeof(RTCPSenderReport);
64 expectedlength += sizeof(RTCPReceiverReport)*((int)hdr->count);
65
66 if (expectedlength != len)
67 return;
68
69 knownformat = true;
70 }
71
72 #ifdef RTPDEBUG
Dump()73 void RTCPSRPacket::Dump()
74 {
75 RTCPPacket::Dump();
76 if (!IsKnownFormat())
77 std::cout << " Unknown format" << std::endl;
78 else
79 {
80 int num = GetReceptionReportCount();
81 int i;
82 RTPNTPTime t = GetNTPTimestamp();
83
84 std::cout << " SSRC of sender: " << GetSenderSSRC() << std::endl;
85 std::cout << " Sender info:" << std::endl;
86 std::cout << " NTP timestamp: " << t.GetMSW() << ":" << t.GetLSW() << std::endl;
87 std::cout << " RTP timestamp: " << GetRTPTimestamp() << std::endl;
88 std::cout << " Packet count: " << GetSenderPacketCount() << std::endl;
89 std::cout << " Octet count: " << GetSenderOctetCount() << std::endl;
90 for (i = 0 ; i < num ; i++)
91 {
92 std::cout << " Report block " << i << std::endl;
93 std::cout << " SSRC: " << GetSSRC(i) << std::endl;
94 std::cout << " Fraction lost: " << (uint32_t)GetFractionLost(i) << std::endl;
95 std::cout << " Packets lost: " << GetLostPacketCount(i) << std::endl;
96 std::cout << " Seq. nr.: " << GetExtendedHighestSequenceNumber(i) << std::endl;
97 std::cout << " Jitter: " << GetJitter(i) << std::endl;
98 std::cout << " LSR: " << GetLSR(i) << std::endl;
99 std::cout << " DLSR: " << GetDLSR(i) << std::endl;
100 }
101 }
102 }
103 #endif // RTPDEBUG
104
105 } // end namespace
106
107