forked from Mirrors/sngrep
codecs: add support for g711u codec
This commit is contained in:
Kaian
parent
341dad4fd3
commit
3ab8b74f78
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@ -21,6 +21,7 @@ include_directories(${CMAKE_SOURCE_DIR}/src)
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set(SOURCES
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src/codecs/codec.c
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src/codecs/codec_g711a.c
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src/codecs/codec_g711u.c
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src/capture/capture.c
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src/capture/capture_pcap.c
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src/capture/capture_txt.c
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@ -29,6 +29,7 @@
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#include "config.h"
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#include <glib.h>
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#include "codecs/codec_g711a.h"
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#include "codecs/codec_g711u.h"
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#ifdef WITH_G729
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#include "codecs/codec_g729.h"
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#endif
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@ -92,6 +93,9 @@ codec_stream_decode(Stream *stream, GByteArray *decoded, GError **error)
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case RTP_CODEC_G711A:
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dbytes = codec_g711a_decode(rtp_payload, &dlen);
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break;
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case RTP_CODEC_G711U:
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dbytes = codec_g711u_decode(rtp_payload, &dlen);
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break;
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#ifdef WITH_G729
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case RTP_CODEC_G729:
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dbytes = codec_g729_decode(rtp_payload, &dlen);
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@ -32,6 +32,7 @@
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#include "storage/stream.h"
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#define RTP_CODEC_G711U 0
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#define RTP_CODEC_G711A 8
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#define RTP_CODEC_G729 18
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@ -33,37 +33,37 @@
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// @formatter:off
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/** Expansion table, taken from wireshark G711atable.h */
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gint16 alaw_exp_table[256] = {
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-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
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-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
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-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
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-3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
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-22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944,
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-30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136,
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-11008,-10496,-12032,-11520, -8960, -8448, -9984, -9472,
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-15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568,
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-344, -328, -376, -360, -280, -264, -312, -296,
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-472, -456, -504, -488, -408, -392, -440, -424,
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static gint16 alaw_exp_table[256] = {
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-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
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-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
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-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
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-3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
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-22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944,
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-30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136,
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-11008,-10496,-12032,-11520, -8960, -8448, -9984, -9472,
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-15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568,
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-344, -328, -376, -360, -280, -264, -312, -296,
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-472, -456, -504, -488, -408, -392, -440, -424,
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-88, -72, -120, -104, -24, -8, -56, -40,
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-216, -200, -248, -232, -152, -136, -184, -168,
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-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
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-1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
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-688, -656, -752, -720, -560, -528, -624, -592,
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-944, -912, -1008, -976, -816, -784, -880, -848,
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5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
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7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
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2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
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3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
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22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
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30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
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11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
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15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
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-216, -200, -248, -232, -152, -136, -184, -168,
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-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
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-1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
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-688, -656, -752, -720, -560, -528, -624, -592,
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-944, -912, -1008, -976, -816, -784, -880, -848,
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5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
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7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
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2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
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3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
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22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
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30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
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11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
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15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
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344, 328, 376, 360, 280, 264, 312, 296,
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472, 456, 504, 488, 408, 392, 440, 424,
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88, 72, 120, 104, 24, 8, 56, 40,
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88, 72, 120, 104, 24, 8, 56, 40,
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216, 200, 248, 232, 152, 136, 184, 168,
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1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
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1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
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1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
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1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
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688, 656, 752, 720, 560, 528, 624, 592,
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944, 912, 1008, 976, 816, 784, 880, 848
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};
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@ -0,0 +1,86 @@
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/**************************************************************************
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**
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** sngrep - SIP Messages flow viewer
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**
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** Copyright (C) 2013-2019 Ivan Alonso (Kaian)
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** Copyright (C) 2013-2019 Irontec SL. All rights reserved.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (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, see <http://www.gnu.org/licenses/>.
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**
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****************************************************************************/
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/**
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* @file codec_g711u.c
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* @author Ivan Alonso [aka Kaian] <kaian@irontec.com>
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*
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* @brief Functions to decode g711u (ulaw) RTP packets
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*
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*/
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#include "config.h"
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#include <glib.h>
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#include "codec_g711u.h"
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// @formatter:off
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/** Expansion table, taken from wireshark G711utable.h */
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static gint16 ulaw_exp_table[256] = {
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-32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
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-23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
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-15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
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-11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
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-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
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-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
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-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
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-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
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-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
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-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
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-876, -844, -812, -780, -748, -716, -684, -652,
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-620, -588, -556, -524, -492, -460, -428, -396,
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-372, -356, -340, -324, -308, -292, -276, -260,
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-244, -228, -212, -196, -180, -164, -148, -132,
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-120, -112, -104, -96, -88, -80, -72, -64,
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-56, -48, -40, -32, -24, -16, -8, 0,
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32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
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23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
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15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
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11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
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7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
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5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
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3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
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2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
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1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
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1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
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876, 844, 812, 780, 748, 716, 684, 652,
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620, 588, 556, 524, 492, 460, 428, 396,
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372, 356, 340, 324, 308, 292, 276, 260,
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244, 228, 212, 196, 180, 164, 148, 132,
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120, 112, 104, 96, 88, 80, 72, 64,
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56, 48, 40, 32, 24, 16, 8, 0
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};
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// @formatter:on
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gint16 *
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codec_g711u_decode(GByteArray *input, gsize *decoded_len)
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{
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g_return_val_if_fail(input != NULL, 0);
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*decoded_len = input->len * sizeof(gint16);
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gint16 *out = g_malloc(*decoded_len);
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for (guint i = 0; i < input->len; i++) {
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out[i] = ulaw_exp_table[input->data[i]];
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}
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return out;
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}
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@ -0,0 +1,38 @@
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/**************************************************************************
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**
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** sngrep - SIP Messages flow viewer
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**
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** Copyright (C) 2013-2019 Ivan Alonso (Kaian)
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** Copyright (C) 2013-2019 Irontec SL. All rights reserved.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (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, see <http://www.gnu.org/licenses/>.
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**
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****************************************************************************/
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/**
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* @file codec_g711u.h
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* @author Ivan Alonso [aka Kaian] <kaian@irontec.com>
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*
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* @brief Functions to decode g711u (ulaw) RTP packets
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*
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*/
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#ifndef __SNGREP_G711U_H
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#define __SNGREP_G711U_H
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#include <glib.h>
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gint16 *
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codec_g711u_decode(GByteArray *input, gsize *decoded_len);
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#endif
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