forked from osmocom/wireshark
9090afbfe9
- spaghetti code for save was split into separate functions - code saves G.711 only, all other codecs are saved as silence with correct duration - code is ready to include other codecs - code supports 8000 Hz sampling rate only, other rates are rejected with warning - bidirectional stream (forward and reverse) creates stereo .au file - output is based on timestamps in RTP streams - save operation is slower than before because it is set of seek() - one per each codec sample - code allows align of save audio: - as it is - each stream is saved from its beginning, no aling - to start of each other - later stream is prepended with silence - align saved audio to beginning of capture file - each stream is prepended with silence - save to raw works correctly now - only payload is saved - old code was inserting G.711 silence time to time to raw data Bug: 13242 Change-Id: I74d02a1cc1c75acf9ffe930d078c00a0555cbfb6 Reviewed-on: https://code.wireshark.org/review/19245 Petri-Dish: Anders Broman <a.broman58@gmail.com> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Anders Broman <a.broman58@gmail.com>
159 lines
4.7 KiB
C
159 lines
4.7 KiB
C
/* tap-rtp-analysis.h
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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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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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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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void rtp_analysis(
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address *ip_src_fwd,
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guint32 port_src_fwd,
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address *ip_dst_fwd,
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guint32 port_dst_fwd,
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guint32 ssrc_fwd,
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address *ip_src_rev,
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guint32 port_src_rev,
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address *ip_dst_rev,
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guint32 port_dst_rev,
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guint32 ssrc_rev
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);
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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 rtp_packet_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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* rtp_packet_analyse has been called
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*/
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address first_packet_mac_addr; /**< MAC address of first packet, used to determine duplicates due to mirroring */
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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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guint32 delta_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 max_delta;
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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 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 rtp_packet_analyse(tap_rtp_stat_t *statinfo,
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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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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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