blob: 6b97907c52cae3b06e5c6586314234cabbdeb61c
| 1 | /* |
| 2 | ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding |
| 3 | ** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com |
| 4 | ** |
| 5 | ** This program is free software; you can redistribute it and/or modify |
| 6 | ** it under the terms of the GNU General Public License as published by |
| 7 | ** the Free Software Foundation; either version 2 of the License, or |
| 8 | ** (at your option) any later version. |
| 9 | ** |
| 10 | ** This program is distributed in the hope that it will be useful, |
| 11 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | ** GNU General Public License for more details. |
| 14 | ** |
| 15 | ** You should have received a copy of the GNU General Public License |
| 16 | ** along with this program; if not, write to the Free Software |
| 17 | ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 18 | ** |
| 19 | ** Any non-GPL usage of this software or parts of this software is strictly |
| 20 | ** forbidden. |
| 21 | ** |
| 22 | ** The "appropriate copyright message" mentioned in section 2c of the GPLv2 |
| 23 | ** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com" |
| 24 | ** |
| 25 | ** Commercial non-GPL licensing of this software is possible. |
| 26 | ** For more info contact Nero AG through Mpeg4AAClicense@nero.com. |
| 27 | ** |
| 28 | ** $Id: ic_predict.h,v 1.23 2007/11/01 12:33:31 menno Exp $ |
| 29 | **/ |
| 30 | |
| 31 | #ifdef MAIN_DEC |
| 32 | |
| 33 | #ifndef __IC_PREDICT_H__ |
| 34 | #define __IC_PREDICT_H__ |
| 35 | |
| 36 | #ifdef __cplusplus |
| 37 | extern "C" { |
| 38 | #endif |
| 39 | |
| 40 | #define ALPHA REAL_CONST(0.90625) |
| 41 | #define A REAL_CONST(0.953125) |
| 42 | |
| 43 | |
| 44 | void pns_reset_pred_state(ic_stream *ics, pred_state *state); |
| 45 | void reset_all_predictors(pred_state *state, uint16_t frame_len); |
| 46 | void ic_prediction(ic_stream *ics, real_t *spec, pred_state *state, |
| 47 | uint16_t frame_len, uint8_t sf_index); |
| 48 | |
| 49 | ALIGN static const real_t mnt_table[128] = { |
| 50 | COEF_CONST(0.9531250000), COEF_CONST(0.9453125000), |
| 51 | COEF_CONST(0.9375000000), COEF_CONST(0.9296875000), |
| 52 | COEF_CONST(0.9257812500), COEF_CONST(0.9179687500), |
| 53 | COEF_CONST(0.9101562500), COEF_CONST(0.9023437500), |
| 54 | COEF_CONST(0.8984375000), COEF_CONST(0.8906250000), |
| 55 | COEF_CONST(0.8828125000), COEF_CONST(0.8789062500), |
| 56 | COEF_CONST(0.8710937500), COEF_CONST(0.8671875000), |
| 57 | COEF_CONST(0.8593750000), COEF_CONST(0.8515625000), |
| 58 | COEF_CONST(0.8476562500), COEF_CONST(0.8398437500), |
| 59 | COEF_CONST(0.8359375000), COEF_CONST(0.8281250000), |
| 60 | COEF_CONST(0.8242187500), COEF_CONST(0.8203125000), |
| 61 | COEF_CONST(0.8125000000), COEF_CONST(0.8085937500), |
| 62 | COEF_CONST(0.8007812500), COEF_CONST(0.7968750000), |
| 63 | COEF_CONST(0.7929687500), COEF_CONST(0.7851562500), |
| 64 | COEF_CONST(0.7812500000), COEF_CONST(0.7773437500), |
| 65 | COEF_CONST(0.7734375000), COEF_CONST(0.7656250000), |
| 66 | COEF_CONST(0.7617187500), COEF_CONST(0.7578125000), |
| 67 | COEF_CONST(0.7539062500), COEF_CONST(0.7500000000), |
| 68 | COEF_CONST(0.7421875000), COEF_CONST(0.7382812500), |
| 69 | COEF_CONST(0.7343750000), COEF_CONST(0.7304687500), |
| 70 | COEF_CONST(0.7265625000), COEF_CONST(0.7226562500), |
| 71 | COEF_CONST(0.7187500000), COEF_CONST(0.7148437500), |
| 72 | COEF_CONST(0.7109375000), COEF_CONST(0.7070312500), |
| 73 | COEF_CONST(0.6992187500), COEF_CONST(0.6953125000), |
| 74 | COEF_CONST(0.6914062500), COEF_CONST(0.6875000000), |
| 75 | COEF_CONST(0.6835937500), COEF_CONST(0.6796875000), |
| 76 | COEF_CONST(0.6796875000), COEF_CONST(0.6757812500), |
| 77 | COEF_CONST(0.6718750000), COEF_CONST(0.6679687500), |
| 78 | COEF_CONST(0.6640625000), COEF_CONST(0.6601562500), |
| 79 | COEF_CONST(0.6562500000), COEF_CONST(0.6523437500), |
| 80 | COEF_CONST(0.6484375000), COEF_CONST(0.6445312500), |
| 81 | COEF_CONST(0.6406250000), COEF_CONST(0.6406250000), |
| 82 | COEF_CONST(0.6367187500), COEF_CONST(0.6328125000), |
| 83 | COEF_CONST(0.6289062500), COEF_CONST(0.6250000000), |
| 84 | COEF_CONST(0.6210937500), COEF_CONST(0.6210937500), |
| 85 | COEF_CONST(0.6171875000), COEF_CONST(0.6132812500), |
| 86 | COEF_CONST(0.6093750000), COEF_CONST(0.6054687500), |
| 87 | COEF_CONST(0.6054687500), COEF_CONST(0.6015625000), |
| 88 | COEF_CONST(0.5976562500), COEF_CONST(0.5937500000), |
| 89 | COEF_CONST(0.5937500000), COEF_CONST(0.5898437500), |
| 90 | COEF_CONST(0.5859375000), COEF_CONST(0.5820312500), |
| 91 | COEF_CONST(0.5820312500), COEF_CONST(0.5781250000), |
| 92 | COEF_CONST(0.5742187500), COEF_CONST(0.5742187500), |
| 93 | COEF_CONST(0.5703125000), COEF_CONST(0.5664062500), |
| 94 | COEF_CONST(0.5664062500), COEF_CONST(0.5625000000), |
| 95 | COEF_CONST(0.5585937500), COEF_CONST(0.5585937500), |
| 96 | COEF_CONST(0.5546875000), COEF_CONST(0.5507812500), |
| 97 | COEF_CONST(0.5507812500), COEF_CONST(0.5468750000), |
| 98 | COEF_CONST(0.5429687500), COEF_CONST(0.5429687500), |
| 99 | COEF_CONST(0.5390625000), COEF_CONST(0.5390625000), |
| 100 | COEF_CONST(0.5351562500), COEF_CONST(0.5312500000), |
| 101 | COEF_CONST(0.5312500000), COEF_CONST(0.5273437500), |
| 102 | COEF_CONST(0.5273437500), COEF_CONST(0.5234375000), |
| 103 | COEF_CONST(0.5195312500), COEF_CONST(0.5195312500), |
| 104 | COEF_CONST(0.5156250000), COEF_CONST(0.5156250000), |
| 105 | COEF_CONST(0.5117187500), COEF_CONST(0.5117187500), |
| 106 | COEF_CONST(0.5078125000), COEF_CONST(0.5078125000), |
| 107 | COEF_CONST(0.5039062500), COEF_CONST(0.5039062500), |
| 108 | COEF_CONST(0.5000000000), COEF_CONST(0.4980468750), |
| 109 | COEF_CONST(0.4960937500), COEF_CONST(0.4941406250), |
| 110 | COEF_CONST(0.4921875000), COEF_CONST(0.4902343750), |
| 111 | COEF_CONST(0.4882812500), COEF_CONST(0.4863281250), |
| 112 | COEF_CONST(0.4843750000), COEF_CONST(0.4824218750), |
| 113 | COEF_CONST(0.4804687500), COEF_CONST(0.4785156250) |
| 114 | }; |
| 115 | |
| 116 | ALIGN static const real_t exp_table[128] = { |
| 117 | COEF_CONST(0.50000000000000000000000000000000000000000000000000), |
| 118 | COEF_CONST(0.25000000000000000000000000000000000000000000000000), |
| 119 | COEF_CONST(0.12500000000000000000000000000000000000000000000000), |
| 120 | COEF_CONST(0.06250000000000000000000000000000000000000000000000), |
| 121 | COEF_CONST(0.03125000000000000000000000000000000000000000000000), |
| 122 | COEF_CONST(0.01562500000000000000000000000000000000000000000000), |
| 123 | COEF_CONST(0.00781250000000000000000000000000000000000000000000), |
| 124 | COEF_CONST(0.00390625000000000000000000000000000000000000000000), |
| 125 | COEF_CONST(0.00195312500000000000000000000000000000000000000000), |
| 126 | COEF_CONST(0.00097656250000000000000000000000000000000000000000), |
| 127 | COEF_CONST(0.00048828125000000000000000000000000000000000000000), |
| 128 | COEF_CONST(0.00024414062500000000000000000000000000000000000000), |
| 129 | COEF_CONST(0.00012207031250000000000000000000000000000000000000), |
| 130 | COEF_CONST(0.00006103515625000000000000000000000000000000000000), |
| 131 | COEF_CONST(0.00003051757812500000000000000000000000000000000000), |
| 132 | COEF_CONST(0.00001525878906250000000000000000000000000000000000), |
| 133 | COEF_CONST(0.00000762939453125000000000000000000000000000000000), |
| 134 | COEF_CONST(0.00000381469726562500000000000000000000000000000000), |
| 135 | COEF_CONST(0.00000190734863281250000000000000000000000000000000), |
| 136 | COEF_CONST(0.00000095367431640625000000000000000000000000000000), |
| 137 | COEF_CONST(0.00000047683715820312500000000000000000000000000000), |
| 138 | COEF_CONST(0.00000023841857910156250000000000000000000000000000), |
| 139 | COEF_CONST(0.00000011920928955078125000000000000000000000000000), |
| 140 | COEF_CONST(0.00000005960464477539062500000000000000000000000000), |
| 141 | COEF_CONST(0.00000002980232238769531300000000000000000000000000), |
| 142 | COEF_CONST(0.00000001490116119384765600000000000000000000000000), |
| 143 | COEF_CONST(0.00000000745058059692382810000000000000000000000000), |
| 144 | COEF_CONST(0.00000000372529029846191410000000000000000000000000), |
| 145 | COEF_CONST(0.00000000186264514923095700000000000000000000000000), |
| 146 | COEF_CONST(0.00000000093132257461547852000000000000000000000000), |
| 147 | COEF_CONST(0.00000000046566128730773926000000000000000000000000), |
| 148 | COEF_CONST(0.00000000023283064365386963000000000000000000000000), |
| 149 | COEF_CONST(0.00000000011641532182693481000000000000000000000000), |
| 150 | COEF_CONST(0.00000000005820766091346740700000000000000000000000), |
| 151 | COEF_CONST(0.00000000002910383045673370400000000000000000000000), |
| 152 | COEF_CONST(0.00000000001455191522836685200000000000000000000000), |
| 153 | COEF_CONST(0.00000000000727595761418342590000000000000000000000), |
| 154 | COEF_CONST(0.00000000000363797880709171300000000000000000000000), |
| 155 | COEF_CONST(0.00000000000181898940354585650000000000000000000000), |
| 156 | COEF_CONST(0.00000000000090949470177292824000000000000000000000), |
| 157 | COEF_CONST(0.00000000000045474735088646412000000000000000000000), |
| 158 | COEF_CONST(0.00000000000022737367544323206000000000000000000000), |
| 159 | COEF_CONST(0.00000000000011368683772161603000000000000000000000), |
| 160 | COEF_CONST(0.00000000000005684341886080801500000000000000000000), |
| 161 | COEF_CONST(0.00000000000002842170943040400700000000000000000000), |
| 162 | COEF_CONST(0.00000000000001421085471520200400000000000000000000), |
| 163 | COEF_CONST(0.00000000000000710542735760100190000000000000000000), |
| 164 | COEF_CONST(0.00000000000000355271367880050090000000000000000000), |
| 165 | COEF_CONST(0.00000000000000177635683940025050000000000000000000), |
| 166 | COEF_CONST(0.00000000000000088817841970012523000000000000000000), |
| 167 | COEF_CONST(0.00000000000000044408920985006262000000000000000000), |
| 168 | COEF_CONST(0.00000000000000022204460492503131000000000000000000), |
| 169 | COEF_CONST(0.00000000000000011102230246251565000000000000000000), |
| 170 | COEF_CONST(0.00000000000000005551115123125782700000000000000000), |
| 171 | COEF_CONST(0.00000000000000002775557561562891400000000000000000), |
| 172 | COEF_CONST(0.00000000000000001387778780781445700000000000000000), |
| 173 | COEF_CONST(0.00000000000000000693889390390722840000000000000000), |
| 174 | COEF_CONST(0.00000000000000000346944695195361420000000000000000), |
| 175 | COEF_CONST(0.00000000000000000173472347597680710000000000000000), |
| 176 | COEF_CONST(0.00000000000000000086736173798840355000000000000000), |
| 177 | COEF_CONST(0.00000000000000000043368086899420177000000000000000), |
| 178 | COEF_CONST(0.00000000000000000021684043449710089000000000000000), |
| 179 | COEF_CONST(0.00000000000000000010842021724855044000000000000000), |
| 180 | COEF_CONST(0.00000000000000000005421010862427522200000000000000), |
| 181 | COEF_CONST(0.00000000000000000002710505431213761100000000000000), |
| 182 | COEF_CONST(0.00000000000000000001355252715606880500000000000000), |
| 183 | COEF_CONST(0.00000000000000000000677626357803440270000000000000), |
| 184 | COEF_CONST(0.00000000000000000000338813178901720140000000000000), |
| 185 | COEF_CONST(0.00000000000000000000169406589450860070000000000000), |
| 186 | COEF_CONST(0.00000000000000000000084703294725430034000000000000), |
| 187 | COEF_CONST(0.00000000000000000000042351647362715017000000000000), |
| 188 | COEF_CONST(0.00000000000000000000021175823681357508000000000000), |
| 189 | COEF_CONST(0.00000000000000000000010587911840678754000000000000), |
| 190 | COEF_CONST(0.00000000000000000000005293955920339377100000000000), |
| 191 | COEF_CONST(0.00000000000000000000002646977960169688600000000000), |
| 192 | COEF_CONST(0.00000000000000000000001323488980084844300000000000), |
| 193 | COEF_CONST(0.00000000000000000000000661744490042422140000000000), |
| 194 | COEF_CONST(0.00000000000000000000000330872245021211070000000000), |
| 195 | COEF_CONST(0.00000000000000000000000165436122510605530000000000), |
| 196 | COEF_CONST(0.00000000000000000000000082718061255302767000000000), |
| 197 | COEF_CONST(0.00000000000000000000000041359030627651384000000000), |
| 198 | COEF_CONST(0.00000000000000000000000020679515313825692000000000), |
| 199 | COEF_CONST(0.00000000000000000000000010339757656912846000000000), |
| 200 | COEF_CONST(0.00000000000000000000000005169878828456423000000000), |
| 201 | COEF_CONST(0.00000000000000000000000002584939414228211500000000), |
| 202 | COEF_CONST(0.00000000000000000000000001292469707114105700000000), |
| 203 | COEF_CONST(0.00000000000000000000000000646234853557052870000000), |
| 204 | COEF_CONST(0.00000000000000000000000000323117426778526440000000), |
| 205 | COEF_CONST(0.00000000000000000000000000161558713389263220000000), |
| 206 | COEF_CONST(0.00000000000000000000000000080779356694631609000000), |
| 207 | COEF_CONST(0.00000000000000000000000000040389678347315804000000), |
| 208 | COEF_CONST(0.00000000000000000000000000020194839173657902000000), |
| 209 | COEF_CONST(0.00000000000000000000000000010097419586828951000000), |
| 210 | COEF_CONST(0.00000000000000000000000000005048709793414475600000), |
| 211 | COEF_CONST(0.00000000000000000000000000002524354896707237800000), |
| 212 | COEF_CONST(0.00000000000000000000000000001262177448353618900000), |
| 213 | COEF_CONST(0.00000000000000000000000000000631088724176809440000), |
| 214 | COEF_CONST(0.00000000000000000000000000000315544362088404720000), |
| 215 | COEF_CONST(0.00000000000000000000000000000157772181044202360000), |
| 216 | COEF_CONST(0.00000000000000000000000000000078886090522101181000), |
| 217 | COEF_CONST(0.00000000000000000000000000000039443045261050590000), |
| 218 | COEF_CONST(0.00000000000000000000000000000019721522630525295000), |
| 219 | COEF_CONST(0.00000000000000000000000000000009860761315262647600), |
| 220 | COEF_CONST(0.00000000000000000000000000000004930380657631323800), |
| 221 | COEF_CONST(0.00000000000000000000000000000002465190328815661900), |
| 222 | COEF_CONST(0.00000000000000000000000000000001232595164407830900), |
| 223 | COEF_CONST(0.00000000000000000000000000000000616297582203915470), |
| 224 | COEF_CONST(0.00000000000000000000000000000000308148791101957740), |
| 225 | COEF_CONST(0.00000000000000000000000000000000154074395550978870), |
| 226 | COEF_CONST(0.00000000000000000000000000000000077037197775489434), |
| 227 | COEF_CONST(0.00000000000000000000000000000000038518598887744717), |
| 228 | COEF_CONST(0.00000000000000000000000000000000019259299443872359), |
| 229 | COEF_CONST(0.00000000000000000000000000000000009629649721936179), |
| 230 | COEF_CONST(0.00000000000000000000000000000000004814824860968090), |
| 231 | COEF_CONST(0.00000000000000000000000000000000002407412430484045), |
| 232 | COEF_CONST(0.00000000000000000000000000000000001203706215242022), |
| 233 | COEF_CONST(0.00000000000000000000000000000000000601853107621011), |
| 234 | COEF_CONST(0.00000000000000000000000000000000000300926553810506), |
| 235 | COEF_CONST(0.00000000000000000000000000000000000150463276905253), |
| 236 | COEF_CONST(0.00000000000000000000000000000000000075231638452626), |
| 237 | COEF_CONST(0.00000000000000000000000000000000000037615819226313), |
| 238 | COEF_CONST(0.00000000000000000000000000000000000018807909613157), |
| 239 | COEF_CONST(0.00000000000000000000000000000000000009403954806578), |
| 240 | COEF_CONST(0.00000000000000000000000000000000000004701977403289), |
| 241 | COEF_CONST(0.00000000000000000000000000000000000002350988701645), |
| 242 | COEF_CONST(0.00000000000000000000000000000000000001175494350822), |
| 243 | COEF_CONST(0.0 /* 0000000000000000000000000000000000000587747175411 "floating point underflow" */), |
| 244 | COEF_CONST(0.0) |
| 245 | }; |
| 246 | |
| 247 | #ifdef __cplusplus |
| 248 | } |
| 249 | #endif |
| 250 | #endif |
| 251 | |
| 252 | #endif |
| 253 |