1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/*
The oRTP library is an RTP (Realtime Transport Protocol - rfc1889) stack.
Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef RTP_H
#define RTP_H
#include <rtpport.h>
#define RTP_MAX_RTQ_SIZE 100 /* max number of packet allowed to be enqueued */
#define IPMAXLEN 20
#define UDP_MAX_SIZE 65536
#define RTP_FIXED_HEADER_SIZE 12
#define RTP_DEFAULT_JITTER_TIME 80 /*miliseconds*/
typedef struct rtp_header
{
#ifdef WORDS_BIGENDIAN
guint16 version:2;
guint16 padbit:1;
guint16 extbit:1;
guint16 cc:4;
guint16 markbit:1;
guint16 paytype:7;
#else
guint16 cc:4;
guint16 extbit:1;
guint16 padbit:1;
guint16 version:2;
guint16 paytype:7;
guint16 markbit:1;
#endif
guint16 seq_number;
guint32 timestamp;
guint32 ssrc;
guint32 csrc[16];
} rtp_header_t;
typedef struct rtp_stats
{
guint64 packet_sent;
guint64 sent; /* bytes sent */
guint64 recv; /* bytes received and delivered in time to the application */
guint64 hw_recv; /* bytes of udp packets received */
guint64 packet_recv; /* number of packets received */
guint64 unavaillable; /* packets not availlable when they were queried */
guint64 outoftime; /* number of packets that were received too late */
guint64 skipped; /* number of packets skipped (that the application never queried
or that need to be skipped in order to compensate a clock slide (see adaptive jitter control)) */
guint64 cum_packet_loss; /* cumulative number of packet lost */
guint64 bad; /* packets that did not appear to be RTP */
guint64 discarded; /* incoming packets discarded because the queue exceeds its max size */
} rtp_stats_t;
#define RTP_TIMESTAMP_IS_NEWER_THAN(ts1,ts2) \
((guint32)((guint32)(ts1) - (guint32)(ts2))< (guint32)(1<<31))
#define RTP_TIMESTAMP_IS_STRICTLY_NEWER_THAN(ts1,ts2) \
( ((guint32)((guint32)(ts1) - (guint32)(ts2))< (guint32)(1<<31)) && (ts1)!=(ts2) )
#define TIME_IS_NEWER_THAN(t1,t2) RTP_TIMESTAMP_IS_NEWER_THAN(t1,t2)
#define TIME_IS_STRICTLY_NEWER_THAN(t1,t2) RTP_TIMESTAMP_IS_STRICTLY_NEWER_THAN(t1,t2)
#endif
|
