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1 office 1 /* tap-iax2-analysis.h
2 * IAX2 analysis addition for Wireshark
3 *
4 * based on rtp_analysis.c
5 * Copyright 2003, Alcatel Business Systems
6 * By Lars Ruoff <lars.ruoff@gmx.net>
7 *
8 * based on tap_rtp.c
9 * Copyright 2003, Iskratel, Ltd, Kranj
10 * By Miha Jemec <m.jemec@iskratel.si>
11 *
12 * Wireshark - Network traffic analyzer
13 * By Gerald Combs <gerald@wireshark.org>
14 * Copyright 1998 Gerald Combs
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License
18 * as published by the Free Software Foundation; either version 2
19 * of the License, or (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 */
30  
31 #ifndef __TAP_IAX2_ANALYSIS_H__
32 #define __TAP_IAX2_ANALYSIS_H__
33  
34 #include <epan/address.h>
35 #include <epan/packet_info.h>
36  
37 /** @file
38 * ???
39 * @todo what's this?
40 */
41  
42 #ifdef __cplusplus
43 extern "C" {
44 #endif /* __cplusplus */
45  
46 /****************************************************************************/
47 /* structure that holds the information about the forward and reversed direction */
48 typedef struct _iax2_bw_history_item {
49 double time;
50 guint32 bytes;
51 } iax2_bw_history_item;
52  
53 #define BUFF_BW 300
54  
55 typedef struct _tap_iax2_stat_t {
56 gboolean first_packet; /* do not use in code that is called after rtp_packet_analyse */
57 /* use (flags & STAT_FLAG_FIRST) instead */
58 /* all of the following fields will be initialized after
59 rtp_packet_analyse has been called */
60 guint32 flags; /* see STAT_FLAG-defines below */
61 guint16 seq_num;
62 guint32 timestamp;
63 guint32 delta_timestamp;
64 double bandwidth;
65 iax2_bw_history_item bw_history[BUFF_BW];
66 guint16 bw_start_index;
67 guint16 bw_index;
68 guint32 total_bytes;
69 double delta;
70 double jitter;
71 double diff;
72 double time;
73 double start_time;
74 double max_delta;
75 double max_jitter;
76 double mean_jitter;
77 guint32 max_nr;
78 guint16 start_seq_nr;
79 guint16 stop_seq_nr;
80 guint32 total_nr;
81 guint32 sequence;
82 gboolean under; /* Unused? */
83 gint cycles; /* Unused? */
84 guint16 pt;
85 int reg_pt;
86 } tap_iax2_stat_t;
87  
88 #define PT_UNDEFINED -1
89  
90 /* status flags for the flags parameter in tap_iax2_stat_t */
91 #define STAT_FLAG_FIRST 0x001
92 #define STAT_FLAG_MARKER 0x002
93 #define STAT_FLAG_WRONG_SEQ 0x004
94 #define STAT_FLAG_PT_CHANGE 0x008
95 #define STAT_FLAG_PT_CN 0x010
96 #define STAT_FLAG_FOLLOW_PT_CN 0x020
97 #define STAT_FLAG_REG_PT_CHANGE 0x040
98 #define STAT_FLAG_WRONG_TIMESTAMP 0x080
99  
100 /* function for analysing an IAX2 packet. Called from iax2_analysis. */
101 extern void iax2_packet_analyse(tap_iax2_stat_t *statinfo,
102 packet_info *pinfo,
103 const struct _iax2_info_t *iax2info);
104  
105 #ifdef __cplusplus
106 }
107 #endif /* __cplusplus */
108  
109 #endif /* __TAP_IAX2_ANALYSIS_H__ */
110  
111 /*
112 * Editor modelines - http://www.wireshark.org/tools/modelines.html
113 *
114 * Local variables:
115 * c-basic-offset: 4
116 * tab-width: 8
117 * indent-tabs-mode: nil
118 * End:
119 *
120 * vi: set shiftwidth=4 tabstop=8 expandtab:
121 * :indentSize=4:tabSize=8:noTabs=true:
122 */