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 const int8_t ff_adpcm_ima_cunning_index_table[9] = { 182 -1, -1, -1, -1, 1, 2, 3, 4, -1 183 }; 184 185 const int16_t ff_adpcm_ima_cunning_step_table[61] = { 186 1, 1, 1, 1, 2, 2, 3, 3, 4, 5, 187 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 188 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 189 192, 224, 256, 320, 384, 448, 512, 640, 768, 896, 190 1024, 1280, 1536, 1792, 2048, 2560, 3072, 3584, 4096, 5120, 191 6144, 7168, 8192, 10240, 12288, 14336, 16384, 20480, 24576, 28672, 0 192 }; 193