forked from osmocom/wireshark
123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
/** @file
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*
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* RTP analysis addition for Wireshark
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*
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* Copyright 2003, Alcatel Business Systems
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* By Lars Ruoff <lars.ruoff@gmx.net>
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*
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* based on tap_rtp.c
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* Copyright 2003, Iskratel, Ltd, Kranj
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* By Miha Jemec <m.jemec@iskratel.si>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __TAP_RTP_ANALYSIS_H__
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#define __TAP_RTP_ANALYSIS_H__
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#include <epan/address.h>
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#include <epan/packet_info.h>
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/** @file
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* ???
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* @todo what's this?
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/****************************************************************************/
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/* structure that holds the information about the forward and reversed direction */
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typedef struct _bw_history_item {
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double time;
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guint32 bytes;
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} bw_history_item;
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#define BUFF_BW 300
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typedef struct _tap_rtp_stat_t {
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gboolean first_packet; /**< do not use in code that is called after rtppacket_analyse */
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/* use (flags & STAT_FLAG_FIRST) instead */
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/* all of the following fields will be initialized after
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* rtppacket_analyse has been called
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*/
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guint32 flags; /* see STAT_FLAG-defines below */
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guint16 seq_num;
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guint32 timestamp;
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guint32 first_timestamp;
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double bandwidth;
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bw_history_item bw_history[BUFF_BW];
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guint16 bw_start_index;
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guint16 bw_index;
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guint32 total_bytes;
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guint32 clock_rate;
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double delta;
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double jitter;
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double diff;
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double skew;
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double sumt;
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double sumTS;
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double sumt2;
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double sumtTS;
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double time; /**< Unit is ms */
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double start_time; /**< Unit is ms */
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double lastnominaltime;
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double min_delta;
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double max_delta;
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double mean_delta;
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double min_jitter;
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double max_jitter;
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double max_skew;
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double mean_jitter;
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guint32 max_nr;
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guint16 start_seq_nr;
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guint16 stop_seq_nr;
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guint32 total_nr;
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guint32 sequence;
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gboolean under;
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gint seq_cycles;
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guint16 pt;
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int reg_pt;
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guint32 first_packet_num;
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guint last_payload_len;
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} tap_rtp_stat_t;
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typedef struct _tap_rtp_save_data_t {
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guint32 timestamp;
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unsigned int payload_type;
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size_t payload_len;
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} tap_rtp_save_data_t;
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#define PT_UNDEFINED -1
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/* status flags for the flags parameter in tap_rtp_stat_t */
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#define STAT_FLAG_FIRST 0x001
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#define STAT_FLAG_MARKER 0x002
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#define STAT_FLAG_WRONG_SEQ 0x004
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#define STAT_FLAG_PT_CHANGE 0x008
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#define STAT_FLAG_PT_CN 0x010
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#define STAT_FLAG_FOLLOW_PT_CN 0x020
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#define STAT_FLAG_REG_PT_CHANGE 0x040
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#define STAT_FLAG_WRONG_TIMESTAMP 0x080
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#define STAT_FLAG_PT_T_EVENT 0x100
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#define STAT_FLAG_DUP_PKT 0x200
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/* forward */
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struct _rtp_info;
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/* function for analysing an RTP packet. Called from rtp_analysis and rtp_streams */
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extern void rtppacket_analyse(tap_rtp_stat_t *statinfo,
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const packet_info *pinfo,
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const struct _rtp_info *rtpinfo);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __TAP_RTP_ANALYSIS_H__ */
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