FFmpeg
adpcm_data.c
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1 /*
2  * Copyright (c) 2001-2003 The FFmpeg project
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * ADPCM tables
24  */
25 
26 #include <stdint.h>
27 
28 /* ff_adpcm_step_table[] and ff_adpcm_index_table[] are from the ADPCM
29  reference source */
30 static const int8_t adpcm_index_table2[4] = {
31  -1, 2,
32  -1, 2,
33 };
34 
35 static const int8_t adpcm_index_table3[8] = {
36  -1, -1, 1, 2,
37  -1, -1, 1, 2,
38 };
39 
40 const int8_t ff_adpcm_index_table[16] = {
41  -1, -1, -1, -1, 2, 4, 6, 8,
42  -1, -1, -1, -1, 2, 4, 6, 8,
43 };
44 
45 static const int8_t adpcm_index_table5[32] = {
46  -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16,
47  -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16,
48 };
49 
50 const int8_t * const ff_adpcm_index_tables[4] = {
51  &adpcm_index_table2[0],
52  &adpcm_index_table3[0],
53  &ff_adpcm_index_table[0],
54  &adpcm_index_table5[0],
55 };
56 
57 /**
58  * This is the step table. Note that many programs use slight deviations from
59  * this table, but such deviations are negligible:
60  */
61 const int16_t ff_adpcm_step_table[89] = {
62  7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
63  19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
64  50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
65  130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
66  337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
67  876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
68  2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
69  5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
70  15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
71 };
72 
73 const int16_t ff_adpcm_oki_step_table[49] = {
74  16, 17, 19, 21, 23, 25, 28, 31, 34, 37,
75  41, 45, 50, 55, 60, 66, 73, 80, 88, 97,
76  107, 118, 130, 143, 157, 173, 190, 209, 230, 253,
77  279, 307, 337, 371, 408, 449, 494, 544, 598, 658,
78  724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552
79 };
80 
81 /* These are for MS-ADPCM */
82 /* ff_adpcm_AdaptationTable[], ff_adpcm_AdaptCoeff1[], and
83  ff_adpcm_AdaptCoeff2[] are from libsndfile */
84 const int16_t ff_adpcm_AdaptationTable[] = {
85  230, 230, 230, 230, 307, 409, 512, 614,
86  768, 614, 512, 409, 307, 230, 230, 230
87 };
88 
89 /** Divided by 4 to fit in 8-bit integers */
90 const uint8_t ff_adpcm_AdaptCoeff1[] = {
91  64, 128, 0, 48, 60, 115, 98
92 };
93 
94 /** Divided by 4 to fit in 8-bit integers */
95 const int8_t ff_adpcm_AdaptCoeff2[] = {
96  0, -64, 0, 16, 0, -52, -58
97 };
98 
99 const int16_t ff_adpcm_yamaha_indexscale[] = {
100  230, 230, 230, 230, 307, 409, 512, 614,
101  230, 230, 230, 230, 307, 409, 512, 614
102 };
103 
104 const int8_t ff_adpcm_yamaha_difflookup[] = {
105  1, 3, 5, 7, 9, 11, 13, 15,
106  -1, -3, -5, -7, -9, -11, -13, -15
107 };
108 
109 const uint16_t ff_adpcm_afc_coeffs[2][16] = {
110  { 0, 2048, 0, 1024, 4096, 3584, 3072, 4608, 4200, 4800, 5120, 2048, 1024, 64512, 64512, 63488 },
111  { 0, 0, 2048, 1024, 63488, 64000, 64512, 62976, 63288, 63236, 62464, 63488, 64512, 1024, 0, 0 }
112 };
113 
114 const int16_t ff_adpcm_mtaf_stepsize[32][16] = {
115  { 1, 5, 9, 13, 16, 20, 24, 28,
116  -1, -5, -9, -13, -16, -20, -24, -28, },
117  { 2, 6, 11, 15, 20, 24, 29, 33,
118  -2, -6, -11, -15, -20, -24, -29, -33, },
119  { 2, 7, 13, 18, 23, 28, 34, 39,
120  -2, -7, -13, -18, -23, -28, -34, -39, },
121  { 3, 9, 15, 21, 28, 34, 40, 46,
122  -3, -9, -15, -21, -28, -34, -40, -46, },
123  { 3, 11, 18, 26, 33, 41, 48, 56,
124  -3, -11, -18, -26, -33, -41, -48, -56, },
125  { 4, 13, 22, 31, 40, 49, 58, 67,
126  -4, -13, -22, -31, -40, -49, -58, -67, },
127  { 5, 16, 26, 37, 48, 59, 69, 80,
128  -5, -16, -26, -37, -48, -59, -69, -80, },
129  { 6, 19, 31, 44, 57, 70, 82, 95,
130  -6, -19, -31, -44, -57, -70, -82, -95, },
131  { 7, 22, 38, 53, 68, 83, 99, 114,
132  -7, -22, -38, -53, -68, -83, -99, -114, },
133  { 9, 27, 45, 63, 81, 99, 117, 135,
134  -9, -27, -45, -63, -81, -99, -117, -135, },
135  { 10, 32, 53, 75, 96, 118, 139, 161,
136  -10, -32, -53, -75, -96, -118, -139, -161, },
137  { 12, 38, 64, 90, 115, 141, 167, 193,
138  -12, -38, -64, -90, -115, -141, -167, -193, },
139  { 15, 45, 76, 106, 137, 167, 198, 228,
140  -15, -45, -76, -106, -137, -167, -198, -228, },
141  { 18, 54, 91, 127, 164, 200, 237, 273,
142  -18, -54, -91, -127, -164, -200, -237, -273, },
143  { 21, 65, 108, 152, 195, 239, 282, 326,
144  -21, -65, -108, -152, -195, -239, -282, -326, },
145  { 25, 77, 129, 181, 232, 284, 336, 388,
146  -25, -77, -129, -181, -232, -284, -336, -388, },
147  { 30, 92, 153, 215, 276, 338, 399, 461,
148  -30, -92, -153, -215, -276, -338, -399, -461, },
149  { 36, 109, 183, 256, 329, 402, 476, 549,
150  -36, -109, -183, -256, -329, -402, -476, -549, },
151  { 43, 130, 218, 305, 392, 479, 567, 654,
152  -43, -130, -218, -305, -392, -479, -567, -654, },
153  { 52, 156, 260, 364, 468, 572, 676, 780,
154  -52, -156, -260, -364, -468, -572, -676, -780, },
155  { 62, 186, 310, 434, 558, 682, 806, 930,
156  -62, -186, -310, -434, -558, -682, -806, -930, },
157  { 73, 221, 368, 516, 663, 811, 958, 1106,
158  -73, -221, -368, -516, -663, -811, -958, -1106, },
159  { 87, 263, 439, 615, 790, 966, 1142, 1318,
160  -87, -263, -439, -615, -790, -966, -1142, -1318, },
161  { 104, 314, 523, 733, 942, 1152, 1361, 1571,
162  -104, -314, -523, -733, -942, -1152, -1361, -1571, },
163  { 124, 374, 623, 873, 1122, 1372, 1621, 1871,
164  -124, -374, -623, -873, -1122, -1372, -1621, -1871, },
165  { 148, 445, 743, 1040, 1337, 1634, 1932, 2229,
166  -148, -445, -743, -1040, -1337, -1634, -1932, -2229, },
167  { 177, 531, 885, 1239, 1593, 1947, 2301, 2655,
168  -177, -531, -885, -1239, -1593, -1947, -2301, -2655, },
169  { 210, 632, 1053, 1475, 1896, 2318, 2739, 3161,
170  -210, -632, -1053, -1475, -1896, -2318, -2739, -3161, },
171  { 251, 753, 1255, 1757, 2260, 2762, 3264, 3766,
172  -251, -753, -1255, -1757, -2260, -2762, -3264, -3766, },
173  { 299, 897, 1495, 2093, 2692, 3290, 3888, 4486,
174  -299, -897, -1495, -2093, -2692, -3290, -3888, -4486, },
175  { 356, 1068, 1781, 2493, 3206, 3918, 4631, 5343,
176  -356, -1068, -1781, -2493, -3206, -3918, -4631, -5343, },
177  { 424, 1273, 2121, 2970, 3819, 4668, 5516, 6365,
178  -424, -1273, -2121, -2970, -3819, -4668, -5516, -6365, },
179 };
180 
181 /*
182  * Dumped from the binaries:
183  * - FantasticJourney.exe - 0x794D2, DGROUP:0x47A4D2
184  * - BigRaceUSA.exe - 0x9B8AA, DGROUP:0x49C4AA
185  * - Timeshock!.exe - 0x8506A, DGROUP:0x485C6A
186  */
187 const int8_t ff_adpcm_ima_cunning_index_table[9] = {
188  -1, -1, -1, -1, 1, 2, 3, 4, -1
189 };
190 
191 /*
192  * Dumped from the binaries:
193  * - FantasticJourney.exe - 0x79458, DGROUP:0x47A458
194  * - BigRaceUSA.exe - 0x9B830, DGROUP:0x49C430
195  * - Timeshock!.exe - 0x84FF0, DGROUP:0x485BF0
196  */
197 const int16_t ff_adpcm_ima_cunning_step_table[61] = {
198  1, 1, 1, 1, 2, 2, 3, 3, 4, 5,
199  6, 7, 8, 10, 12, 14, 16, 20, 24, 28,
200  32, 40, 48, 56, 64, 80, 96, 112, 128, 160,
201  192, 224, 256, 320, 384, 448, 512, 640, 768, 896,
202  1024, 1280, 1536, 1792, 2048, 2560, 3072, 3584, 4096, 5120,
203  6144, 7168, 8192, 10240, 12288, 14336, 16384, 20480, 24576, 28672, 0
204 };
ff_adpcm_oki_step_table
const int16_t ff_adpcm_oki_step_table[49]
Definition: adpcm_data.c:73
ff_adpcm_AdaptationTable
const int16_t ff_adpcm_AdaptationTable[]
Definition: adpcm_data.c:84
ff_adpcm_ima_cunning_index_table
const int8_t ff_adpcm_ima_cunning_index_table[9]
Definition: adpcm_data.c:187
ff_adpcm_mtaf_stepsize
const int16_t ff_adpcm_mtaf_stepsize[32][16]
Definition: adpcm_data.c:114
adpcm_index_table5
static const int8_t adpcm_index_table5[32]
Definition: adpcm_data.c:45
ff_adpcm_yamaha_difflookup
const int8_t ff_adpcm_yamaha_difflookup[]
Definition: adpcm_data.c:104
ff_adpcm_step_table
const int16_t ff_adpcm_step_table[89]
This is the step table.
Definition: adpcm_data.c:61
adpcm_index_table2
static const int8_t adpcm_index_table2[4]
Definition: adpcm_data.c:30
adpcm_index_table3
static const int8_t adpcm_index_table3[8]
Definition: adpcm_data.c:35
ff_adpcm_AdaptCoeff1
const uint8_t ff_adpcm_AdaptCoeff1[]
Divided by 4 to fit in 8-bit integers.
Definition: adpcm_data.c:90
ff_adpcm_AdaptCoeff2
const int8_t ff_adpcm_AdaptCoeff2[]
Divided by 4 to fit in 8-bit integers.
Definition: adpcm_data.c:95
uint8_t
uint8_t
Definition: audio_convert.c:194
ff_adpcm_index_table
const int8_t ff_adpcm_index_table[16]
Definition: adpcm_data.c:40
ff_adpcm_yamaha_indexscale
const int16_t ff_adpcm_yamaha_indexscale[]
Definition: adpcm_data.c:99
ff_adpcm_ima_cunning_step_table
const int16_t ff_adpcm_ima_cunning_step_table[61]
Definition: adpcm_data.c:197
ff_adpcm_afc_coeffs
const uint16_t ff_adpcm_afc_coeffs[2][16]
Definition: adpcm_data.c:109
ff_adpcm_index_tables
const int8_t *const ff_adpcm_index_tables[4]
Definition: adpcm_data.c:50
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