libavcodec/ra288.h

   1 /*
   2  * RealAudio 2.0 (28.8K)
   3  * Copyright (c) 2003 the ffmpeg project
   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 #ifndef AVCODEC_RA288_H
  23 #define AVCODEC_RA288_H
  24
  25 #include <stdint.h>
  26
  27 static const float amptable[8]={
  28      0.515625,  0.90234375,  1.57910156,  2.76342773,
  29     -0.515625, -0.90234375, -1.57910156, -2.76342773
  30 };
  31
  32 static const int16_t codetable[128][5]={
  33     {   668, -2950, -1254, -1790, -2553}, { -5032, -4577, -1045,  2908,  3318},
  34     { -2819, -2677,  -948, -2825, -4450}, { -6679,  -340,  1482, -1276,  1262},
  35     {  -562, -6757,  1281,   179, -1274}, { -2512, -7130, -4925,  6913,  2411},
  36     { -2478,  -156,  4683, -3873,     0}, { -8208,  2140,  -478, -2785,   533},
  37     {  1889,  2759,  1381, -6955, -5913}, {  5082, -2460, -5778,  1797,   568},
  38     { -2208, -3309, -4523, -6236, -7505}, { -2719,  4358, -2988, -1149,  2664},
  39     {  1259,   995,  2711, -2464,-10390}, {  1722, -7569, -2742,  2171, -2329},
  40     {  1032,   747,  -858, -7946,-12843}, {  3106,  4856, -4193, -2541,  1035},
  41     {  1862,  -960, -6628,   410,  5882}, { -2493, -2628, -4000,   -60,  7202},
  42     { -2672,  1446,  1536, -3831,  1233}, { -5302,  6912,  1589, -4187,  3665},
  43     { -3456, -8170, -7709,  1384,  4698}, { -4699, -6209,-11176,  8104, 16830},
  44     {   930,  7004,  1269, -8977,  2567}, {  4649, 11804,  3441, -5657,  1199},
  45     {  2542,  -183, -8859, -7976,  3230}, { -2872, -2011, -9713, -8385, 12983},
  46     {  3086,  2140, -3680, -9643, -2896}, { -7609,  6515, -2283, -2522,  6332},
  47     { -3333, -5620, -9130,-11131,  5543}, {  -407, -6721,-17466, -2889, 11568},
  48     {  3692,  6796,  -262,-10846, -1856}, {  7275, 13404, -2989,-10595,  4936},
  49     {   244, -2219,  2656,  3776, -5412}, { -4043, -5934,  2131,   863, -2866},
  50     { -3302,  1743, -2006,  -128, -2052}, { -6361,  3342, -1583,   -21,  1142},
  51     { -3837, -1831,  6397,  2545, -2848}, { -9332, -6528,  5309,  1986, -2245},
  52     { -4490,   748,  1935, -3027,  -493}, { -9255,  5366,  3193, -4493,  1784},
  53     {  4784,  -370,  1866,  1057, -1889}, {  7342, -2690, -2577,   676,  -611},
  54     {  -502,  2235, -1850, -1777, -2049}, {  1011,  3880, -2465,  2209,  -152},
  55     {  2592,  2829,  5588,  2839, -7306}, { -3049, -4918,  5955,  9201, -4447},
  56     {   697,  3908,  5798, -4451, -4644}, { -2121,  5444, -2570,   321, -1202},
  57     {  2846, -2086,  3532,   566,  -708}, { -4279,   950,  4980,  3749,   452},
  58     { -2484,  3502,  1719,  -170,   238}, { -3435,   263,  2114, -2005,  2361},
  59     { -7338, -1208,  9347, -1216, -4013}, {-13498,  -439,  8028, -4232,   361},
  60     { -3729,  5433,  2004, -4727, -1259}, { -3986,  7743,  8429, -3691,  -987},
  61     {  5198,  -423,  1150, -1281,   816}, {  7409,  4109, -3949,  2690,    30},
  62     {  1246,  3055,   -35, -1370,  -246}, { -1489,  5635,  -678, -2627,  3170},
  63     {  4830, -4585,  2008, -1062,   799}, {  -129,   717,  4594, 14937, 10706},
  64     {   417,  2759,  1850, -5057, -1153}, { -3887,  7361, -5768,  4285,   666},
  65     {  1443,  -938,    20, -2119, -1697}, { -3712, -3402, -2212,   110,  2136},
  66     { -2952,    12, -1568, -3500, -1855}, { -1315, -1731,  1160,  -558,  1709},
  67     {    88, -4569,   194,  -454, -2957}, { -2839, -1666,  -273,  2084,  -155},
  68     {  -189, -2376,  1663, -1040, -2449}, { -2842, -1369,   636,  -248, -2677},
  69     {  1517,    79, -3013, -3669,  -973}, {  1913, -2493, -5312,  -749,  1271},
  70     { -2903, -3324, -3756, -3690, -1829}, { -2913, -1547, -2760, -1406,  1124},
  71     {  1844, -1834,   456,   706, -4272}, {   467, -4256, -1909,  1521,  1134},
  72     {  -127,  -994,  -637, -1491, -6494}, {   873, -2045, -3828, -2792,  -578},
  73     {  2311, -1817,  2632, -3052,  1968}, {   641,  1194,  1893,  4107,  6342},
  74     {   -45,  1198,  2160, -1449,  2203}, { -2004,  1713,  3518,  2652,  4251},
  75     {  2936, -3968,  1280,   131, -1476}, {  2827,     8, -1928,  2658,  3513},
  76     {  3199,  -816,  2687, -1741, -1407}, {  2948,  4029,   394,  -253,  1298},
  77     {  4286,    51, -4507,   -32,  -659}, {  3903,  5646, -5588, -2592,  5707},
  78     {  -606,  1234, -1607, -5187,   664}, {  -525,  3620, -2192, -2527,  1707},
  79     {  4297, -3251, -2283,   812, -2264}, {  5765,   528, -3287,  1352,  1672},
  80     {  2735,  1241, -1103, -3273, -3407}, {  4033,  1648, -2965, -1174,  1444},
  81     {    74,   918,  1999,   915, -1026}, { -2496, -1605,  2034,  2950,   229},
  82     { -2168,  2037,    15, -1264,  -208}, { -3552,  1530,   581,  1491,   962},
  83     { -2613, -2338,  3621, -1488, -2185}, { -1747,    81,  5538,  1432, -2257},
  84     { -1019,   867,   214, -2284, -1510}, { -1684,  2816,  -229,  2551, -1389},
  85     {  2707,   504,   479,  2783, -1009}, {  2517, -1487, -1596,   621,  1929},
  86     {  -148,  2206, -4288,  1292, -1401}, {  -527,  1243, -2731,  1909,  1280},
  87     {  2149, -1501,  3688,   610, -4591}, {  3306, -3369,  1875,  3636, -1217},
  88     {  2574,  2513,  1449, -3074, -4979}, {   814,  1826, -2497,  4234, -4077},
  89     {  1664,  -220,  3418,  1002,  1115}, {   781,  1658,  3919,  6130,  3140},
  90     {  1148,  4065,  1516,   815,   199}, {  1191,  2489,  2561,  2421,  2443},
  91     {   770, -5915,  5515,  -368, -3199}, {  1190,  1047,  3742,  6927, -2089},
  92     {   292,  3099,  4308,  -758, -2455}, {   523,  3921,  4044,  1386,    85},
  93     {  4367,  1006, -1252, -1466, -1383}, {  3852,  1579,   -77,  2064,   868},
  94     {  5109,  2919,  -202,   359,  -509}, {  3650,  3206,  2303,  1693,  1296},
  95     {  2905, -3907,   229, -1196, -2332}, {  5977, -3585,   805,  3825, -3138},
  96     {  3746,  -606,    53,  -269, -3301}, {   606,  2018, -1316,  4064,   398}
  97 };
  98
  99 static const float syn_window[111]={
 100   0.576690972, 0.580838025, 0.585013986, 0.589219987, 0.59345597,  0.597723007,
 101   0.602020264, 0.606384277, 0.610748291, 0.615142822, 0.619598389, 0.624084473,
 102   0.628570557, 0.633117676, 0.637695313, 0.642272949, 0.646911621, 0.651580811,
 103   0.656280518, 0.66104126,  0.665802002, 0.670593262, 0.675445557, 0.680328369,
 104   0.685241699, 0.690185547, 0.695159912, 0.700164795, 0.705230713, 0.710327148,
 105   0.715454102, 0.720611572, 0.725830078, 0.731048584, 0.736328125, 0.741638184,
 106   0.747009277, 0.752380371, 0.7578125,   0.763305664, 0.768798828, 0.774353027,
 107   0.779937744, 0.785583496, 0.791229248, 0.796936035, 0.802703857, 0.808502197,
 108   0.814331055, 0.820220947, 0.826141357, 0.832092285, 0.838104248, 0.844146729,
 109   0.850250244, 0.856384277, 0.862548828, 0.868774414, 0.875061035, 0.881378174,
 110   0.88772583,  0.894134521, 0.900604248, 0.907104492, 0.913635254, 0.920227051,
 111   0.926879883, 0.933563232, 0.940307617, 0.94708252,  0.953918457, 0.96081543,
 112   0.96774292,  0.974731445, 0.981781006, 0.988861084, 0.994842529, 0.998565674,
 113   0.999969482, 0.99911499,  0.996002197, 0.990600586, 0.982910156, 0.973022461,
 114   0.960876465, 0.946533203, 0.930053711, 0.911437988, 0.89074707,  0.868041992,
 115   0.843322754, 0.816680908, 0.788208008, 0.757904053, 0.725891113, 0.692199707,
 116   0.656921387, 0.620178223, 0.582000732, 0.542480469, 0.501739502, 0.459838867,
 117   0.416900635, 0.373016357, 0.328277588, 0.282775879, 0.236663818, 0.189971924,
 118   0.142852783, 0.0954284668,0.0477600098
 119 };
 120
 121 static const float gain_window[38]={
 122   0.505699992, 0.524200022, 0.54339999,  0.563300014, 0.583953857, 0.60534668,
 123   0.627502441, 0.650482178, 0.674316406, 0.699005127, 0.724578857, 0.75112915,
 124   0.778625488, 0.807128906, 0.836669922, 0.86730957,  0.899078369, 0.932006836,
 125   0.961486816, 0.982757568, 0.995635986, 1,           0.995819092, 0.983154297,
 126   0.96206665,  0.932769775, 0.895507813, 0.850585938, 0.798400879, 0.739379883,
 127   0.674072266, 0.602996826, 0.526763916, 0.446014404, 0.361480713, 0.273834229,
 128   0.183868408, 0.0923461914
 129 };
 130
 131 /** synthesis bandwidth broadening table */
 132 static const float syn_bw_tab[36]={
 133   0.98828125,  0.976699829, 0.965254128, 0.953942537, 0.942763507, 0.931715488,
 134   0.920796931, 0.910006344, 0.899342179, 0.888803005, 0.878387332, 0.868093729,
 135   0.857920766, 0.847867012, 0.837931097, 0.828111589, 0.818407178, 0.808816493,
 136   0.799338162, 0.789970934, 0.780713439, 0.771564424, 0.762522638, 0.753586829,
 137   0.744755745, 0.736028135, 0.727402806, 0.718878567, 0.710454226, 0.702128589,
 138   0.693900526, 0.685768902, 0.677732527, 0.669790328, 0.66194123,  0.654184103
 139 };
 140
 141 /** gain bandwidth broadening table */
 142 static const float gain_bw_tab[10]={
 143   0.90625,     0.821289063, 0.74432373,  0.674499512, 0.61126709,
 144   0.553955078, 0.50201416,  0.454956055, 0.41229248,  0.373657227
 145 };
 146
 147 #endif /* AVCODEC_RA288_H */