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/** @file
*
* IAX2 analysis addition for Wireshark
*
* based on rtp_analysis.c
* Copyright 2003, Alcatel Business Systems
* By Lars Ruoff <lars.ruoff@gmx.net>
*
* based on tap_rtp.c
* Copyright 2003, Iskratel, Ltd, Kranj
* By Miha Jemec <m.jemec@iskratel.si>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __TAP_IAX2_ANALYSIS_H__
#define __TAP_IAX2_ANALYSIS_H__
#include <epan/address.h>
#include <epan/packet_info.h>
/** @file
* ???
* @todo what's this?
*/
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/****************************************************************************/
/* structure that holds the information about the forward and reversed direction */
typedef struct _iax2_bw_history_item {
double time;
uint32_t bytes;
} iax2_bw_history_item;
#define BUFF_BW 300
typedef struct _tap_iax2_stat_t {
bool first_packet; /* do not use in code that is called after iax2_packet_analyse */
/* use (flags & STAT_FLAG_FIRST) instead */
/* all of the following fields will be initialized after
iax2_packet_analyse has been called */
uint32_t flags; /* see STAT_FLAG-defines below */
uint16_t seq_num;
uint32_t timestamp;
uint32_t delta_timestamp;
double bandwidth;
iax2_bw_history_item bw_history[BUFF_BW];
uint16_t bw_start_index;
uint16_t bw_index;
uint32_t total_bytes;
double delta;
double jitter;
double diff;
double time;
double start_time;
double max_delta;
double max_jitter;
double mean_jitter;
uint32_t max_nr;
uint16_t start_seq_nr;
uint16_t stop_seq_nr;
uint32_t total_nr;
uint32_t sequence;
bool under; /* Unused? */
int cycles; /* Unused? */
uint16_t pt;
int reg_pt;
} tap_iax2_stat_t;
#define PT_UNDEFINED -1
/* status flags for the flags parameter in tap_iax2_stat_t */
#define STAT_FLAG_FIRST 0x001
#define STAT_FLAG_MARKER 0x002
#define STAT_FLAG_WRONG_SEQ 0x004
#define STAT_FLAG_PT_CHANGE 0x008
#define STAT_FLAG_PT_CN 0x010
#define STAT_FLAG_FOLLOW_PT_CN 0x020
#define STAT_FLAG_REG_PT_CHANGE 0x040
#define STAT_FLAG_WRONG_TIMESTAMP 0x080
/* function for analysing an IAX2 packet. Called from iax2_analysis. */
extern void iax2_packet_analyse(tap_iax2_stat_t *statinfo,
packet_info *pinfo,
const struct _iax2_info_t *iax2info);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __TAP_IAX2_ANALYSIS_H__ */
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