FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
gsmdec_data.c
Go to the documentation of this file.
1 /*
2  * gsm 06.10 decoder data
3  * Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <stdint.h>
23 #include "gsmdec_data.h"
24 
25 const uint16_t ff_gsm_long_term_gain_tab[4] = {
26  3277, 11469, 21299, 32767
27 };
28 
29 const uint8_t ff_gsm_requant_tab[4][8] = {
30  { 0 },
31  { 0, 7 },
32  { 0, 2, 5, 7 },
33  { 0, 1, 2, 3, 4, 5, 6, 7 }
34 };
35 
36 const int16_t ff_gsm_dequant_tab[64][8] = {
37  { -28, -20, -12, -4, 4, 12, 20, 28},
38  { -56, -40, -24, -8, 8, 24, 40, 56},
39  { -84, -60, -36, -12, 12, 36, 60, 84},
40  { -112, -80, -48, -16, 16, 48, 80, 112},
41  { -140, -100, -60, -20, 20, 60, 100, 140},
42  { -168, -120, -72, -24, 24, 72, 120, 168},
43  { -196, -140, -84, -28, 28, 84, 140, 196},
44  { -224, -160, -96, -32, 32, 96, 160, 224},
45  { -252, -180, -108, -36, 36, 108, 180, 252},
46  { -280, -200, -120, -40, 40, 120, 200, 280},
47  { -308, -220, -132, -44, 44, 132, 220, 308},
48  { -336, -240, -144, -48, 48, 144, 240, 336},
49  { -364, -260, -156, -52, 52, 156, 260, 364},
50  { -392, -280, -168, -56, 56, 168, 280, 392},
51  { -420, -300, -180, -60, 60, 180, 300, 420},
52  { -448, -320, -192, -64, 64, 192, 320, 448},
53  { -504, -360, -216, -72, 72, 216, 360, 504},
54  { -560, -400, -240, -80, 80, 240, 400, 560},
55  { -616, -440, -264, -88, 88, 264, 440, 616},
56  { -672, -480, -288, -96, 96, 288, 480, 672},
57  { -728, -520, -312, -104, 104, 312, 520, 728},
58  { -784, -560, -336, -112, 112, 336, 560, 784},
59  { -840, -600, -360, -120, 120, 360, 600, 840},
60  { -896, -640, -384, -128, 128, 384, 640, 896},
61  { -1008, -720, -432, -144, 144, 432, 720, 1008},
62  { -1120, -800, -480, -160, 160, 480, 800, 1120},
63  { -1232, -880, -528, -176, 176, 528, 880, 1232},
64  { -1344, -960, -576, -192, 192, 576, 960, 1344},
65  { -1456, -1040, -624, -208, 208, 624, 1040, 1456},
66  { -1568, -1120, -672, -224, 224, 672, 1120, 1568},
67  { -1680, -1200, -720, -240, 240, 720, 1200, 1680},
68  { -1792, -1280, -768, -256, 256, 768, 1280, 1792},
69  { -2016, -1440, -864, -288, 288, 864, 1440, 2016},
70  { -2240, -1600, -960, -320, 320, 960, 1600, 2240},
71  { -2464, -1760, -1056, -352, 352, 1056, 1760, 2464},
72  { -2688, -1920, -1152, -384, 384, 1152, 1920, 2688},
73  { -2912, -2080, -1248, -416, 416, 1248, 2080, 2912},
74  { -3136, -2240, -1344, -448, 448, 1344, 2240, 3136},
75  { -3360, -2400, -1440, -480, 480, 1440, 2400, 3360},
76  { -3584, -2560, -1536, -512, 512, 1536, 2560, 3584},
77  { -4032, -2880, -1728, -576, 576, 1728, 2880, 4032},
78  { -4480, -3200, -1920, -640, 640, 1920, 3200, 4480},
79  { -4928, -3520, -2112, -704, 704, 2112, 3520, 4928},
80  { -5376, -3840, -2304, -768, 768, 2304, 3840, 5376},
81  { -5824, -4160, -2496, -832, 832, 2496, 4160, 5824},
82  { -6272, -4480, -2688, -896, 896, 2688, 4480, 6272},
83  { -6720, -4800, -2880, -960, 960, 2880, 4800, 6720},
84  { -7168, -5120, -3072, -1024, 1024, 3072, 5120, 7168},
85  { -8063, -5759, -3456, -1152, 1152, 3456, 5760, 8064},
86  { -8959, -6399, -3840, -1280, 1280, 3840, 6400, 8960},
87  { -9855, -7039, -4224, -1408, 1408, 4224, 7040, 9856},
88  {-10751, -7679, -4608, -1536, 1536, 4608, 7680, 10752},
89  {-11647, -8319, -4992, -1664, 1664, 4992, 8320, 11648},
90  {-12543, -8959, -5376, -1792, 1792, 5376, 8960, 12544},
91  {-13439, -9599, -5760, -1920, 1920, 5760, 9600, 13440},
92  {-14335, -10239, -6144, -2048, 2048, 6144, 10240, 14336},
93  {-16127, -11519, -6912, -2304, 2304, 6912, 11519, 16127},
94  {-17919, -12799, -7680, -2560, 2560, 7680, 12799, 17919},
95  {-19711, -14079, -8448, -2816, 2816, 8448, 14079, 19711},
96  {-21503, -15359, -9216, -3072, 3072, 9216, 15359, 21503},
97  {-23295, -16639, -9984, -3328, 3328, 9984, 16639, 23295},
98  {-25087, -17919, -10752, -3584, 3584, 10752, 17919, 25087},
99  {-26879, -19199, -11520, -3840, 3840, 11520, 19199, 26879},
100  {-28671, -20479, -12288, -4096, 4096, 12288, 20479, 28671}
101 };
102 
103 static const int apcm_bits[11][13] = {
104  { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
105  { 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1 },
106  { 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1 },
107  { 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1 },
108  { 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1 },
109  { 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
110  { 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
111  { 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
112  { 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
113  { 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
114  { 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 }
115 };
116 
117 const int* const ff_gsm_apcm_bits[][4] = {
118  { apcm_bits[10], apcm_bits[10], apcm_bits[10], apcm_bits[10] }, // 13000
119  { apcm_bits[10], apcm_bits[10], apcm_bits[10], apcm_bits[ 6] }, // 12400
120  { apcm_bits[10], apcm_bits[10], apcm_bits[ 7], apcm_bits[ 5] }, // 11800
121  { apcm_bits[10], apcm_bits[ 8], apcm_bits[ 5], apcm_bits[ 5] }, // 11200
122  { apcm_bits[ 9], apcm_bits[ 5], apcm_bits[ 5], apcm_bits[ 5] }, // 10600
123  { apcm_bits[ 5], apcm_bits[ 5], apcm_bits[ 5], apcm_bits[ 1] }, // 10000
124  { apcm_bits[ 5], apcm_bits[ 5], apcm_bits[ 2], apcm_bits[ 0] }, // 9400
125  { apcm_bits[ 5], apcm_bits[ 3], apcm_bits[ 0], apcm_bits[ 0] }, // 8800
126  { apcm_bits[ 4], apcm_bits[ 0], apcm_bits[ 0], apcm_bits[ 0] }, // 8200
127 };
gsmdec_data.h
uint8_t
uint8_t
Definition: audio_convert.c:194
ff_gsm_dequant_tab
const int16_t ff_gsm_dequant_tab[64][8]
Definition: gsmdec_data.c:36
ff_gsm_long_term_gain_tab
const uint16_t ff_gsm_long_term_gain_tab[4]
Definition: gsmdec_data.c:25
apcm_bits
static const int apcm_bits[11][13]
Definition: gsmdec_data.c:103
ff_gsm_apcm_bits
const int *const ff_gsm_apcm_bits[][4]
Definition: gsmdec_data.c:117
ff_gsm_requant_tab
const uint8_t ff_gsm_requant_tab[4][8]
Definition: gsmdec_data.c:29
Generated on Tue Nov 6 2018 18:11:05 for FFmpeg by   doxygen 1.8.6