forked from Mirrors/sngrep
codecs: add support for g711u codec
This commit is contained in:
Kaian
parent
341dad4fd3
commit
3ab8b74f78
|
|
@ -21,6 +21,7 @@ include_directories(${CMAKE_SOURCE_DIR}/src)
|
|||
set(SOURCES
|
||||
src/codecs/codec.c
|
||||
src/codecs/codec_g711a.c
|
||||
src/codecs/codec_g711u.c
|
||||
src/capture/capture.c
|
||||
src/capture/capture_pcap.c
|
||||
src/capture/capture_txt.c
|
||||
|
|
|
|||
|
|
@ -29,6 +29,7 @@
|
|||
#include "config.h"
|
||||
#include <glib.h>
|
||||
#include "codecs/codec_g711a.h"
|
||||
#include "codecs/codec_g711u.h"
|
||||
#ifdef WITH_G729
|
||||
#include "codecs/codec_g729.h"
|
||||
#endif
|
||||
|
|
@ -92,6 +93,9 @@ codec_stream_decode(Stream *stream, GByteArray *decoded, GError **error)
|
|||
case RTP_CODEC_G711A:
|
||||
dbytes = codec_g711a_decode(rtp_payload, &dlen);
|
||||
break;
|
||||
case RTP_CODEC_G711U:
|
||||
dbytes = codec_g711u_decode(rtp_payload, &dlen);
|
||||
break;
|
||||
#ifdef WITH_G729
|
||||
case RTP_CODEC_G729:
|
||||
dbytes = codec_g729_decode(rtp_payload, &dlen);
|
||||
|
|
|
|||
|
|
@ -32,6 +32,7 @@
|
|||
|
||||
#include "storage/stream.h"
|
||||
|
||||
#define RTP_CODEC_G711U 0
|
||||
#define RTP_CODEC_G711A 8
|
||||
#define RTP_CODEC_G729 18
|
||||
|
||||
|
|
|
|||
|
|
@ -33,7 +33,7 @@
|
|||
|
||||
// @formatter:off
|
||||
/** Expansion table, taken from wireshark G711atable.h */
|
||||
gint16 alaw_exp_table[256] = {
|
||||
static gint16 alaw_exp_table[256] = {
|
||||
-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
|
||||
-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
|
||||
-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
|
||||
|
|
|
|||
|
|
@ -0,0 +1,86 @@
|
|||
/**************************************************************************
|
||||
**
|
||||
** sngrep - SIP Messages flow viewer
|
||||
**
|
||||
** Copyright (C) 2013-2019 Ivan Alonso (Kaian)
|
||||
** Copyright (C) 2013-2019 Irontec SL. All rights reserved.
|
||||
**
|
||||
** This program is free software: you can redistribute it and/or modify
|
||||
** it under the terms of the GNU General Public License as published by
|
||||
** the Free Software Foundation, either version 3 of the License, or
|
||||
** (at your option) any later version.
|
||||
**
|
||||
** This program 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 General Public License for more details.
|
||||
**
|
||||
** You should have received a copy of the GNU General Public License
|
||||
** along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
**
|
||||
****************************************************************************/
|
||||
/**
|
||||
* @file codec_g711u.c
|
||||
* @author Ivan Alonso [aka Kaian] <kaian@irontec.com>
|
||||
*
|
||||
* @brief Functions to decode g711u (ulaw) RTP packets
|
||||
*
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
#include <glib.h>
|
||||
#include "codec_g711u.h"
|
||||
|
||||
// @formatter:off
|
||||
/** Expansion table, taken from wireshark G711utable.h */
|
||||
static gint16 ulaw_exp_table[256] = {
|
||||
-32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
|
||||
-23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
|
||||
-15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
|
||||
-11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
|
||||
-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
|
||||
-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
|
||||
-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
|
||||
-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
|
||||
-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
|
||||
-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
|
||||
-876, -844, -812, -780, -748, -716, -684, -652,
|
||||
-620, -588, -556, -524, -492, -460, -428, -396,
|
||||
-372, -356, -340, -324, -308, -292, -276, -260,
|
||||
-244, -228, -212, -196, -180, -164, -148, -132,
|
||||
-120, -112, -104, -96, -88, -80, -72, -64,
|
||||
-56, -48, -40, -32, -24, -16, -8, 0,
|
||||
32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
|
||||
23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
|
||||
15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
|
||||
11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
|
||||
7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
|
||||
5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
|
||||
3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
|
||||
2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
|
||||
1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
|
||||
1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
|
||||
876, 844, 812, 780, 748, 716, 684, 652,
|
||||
620, 588, 556, 524, 492, 460, 428, 396,
|
||||
372, 356, 340, 324, 308, 292, 276, 260,
|
||||
244, 228, 212, 196, 180, 164, 148, 132,
|
||||
120, 112, 104, 96, 88, 80, 72, 64,
|
||||
56, 48, 40, 32, 24, 16, 8, 0
|
||||
};
|
||||
// @formatter:on
|
||||
|
||||
gint16 *
|
||||
codec_g711u_decode(GByteArray *input, gsize *decoded_len)
|
||||
{
|
||||
g_return_val_if_fail(input != NULL, 0);
|
||||
|
||||
*decoded_len = input->len * sizeof(gint16);
|
||||
gint16 *out = g_malloc(*decoded_len);
|
||||
|
||||
|
||||
for (guint i = 0; i < input->len; i++) {
|
||||
out[i] = ulaw_exp_table[input->data[i]];
|
||||
}
|
||||
|
||||
return out;
|
||||
}
|
||||
|
|
@ -0,0 +1,38 @@
|
|||
/**************************************************************************
|
||||
**
|
||||
** sngrep - SIP Messages flow viewer
|
||||
**
|
||||
** Copyright (C) 2013-2019 Ivan Alonso (Kaian)
|
||||
** Copyright (C) 2013-2019 Irontec SL. All rights reserved.
|
||||
**
|
||||
** This program is free software: you can redistribute it and/or modify
|
||||
** it under the terms of the GNU General Public License as published by
|
||||
** the Free Software Foundation, either version 3 of the License, or
|
||||
** (at your option) any later version.
|
||||
**
|
||||
** This program 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 General Public License for more details.
|
||||
**
|
||||
** You should have received a copy of the GNU General Public License
|
||||
** along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
**
|
||||
****************************************************************************/
|
||||
/**
|
||||
* @file codec_g711u.h
|
||||
* @author Ivan Alonso [aka Kaian] <kaian@irontec.com>
|
||||
*
|
||||
* @brief Functions to decode g711u (ulaw) RTP packets
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef __SNGREP_G711U_H
|
||||
#define __SNGREP_G711U_H
|
||||
|
||||
#include <glib.h>
|
||||
|
||||
gint16 *
|
||||
codec_g711u_decode(GByteArray *input, gsize *decoded_len);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue