ra288.h

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/*
 * RealAudio 2.0 (28.8K)
 * Copyright (c) 2003 the ffmpeg project
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVCODEC_RA288_H
#define AVCODEC_RA288_H

#include <stdint.h>
#include "dsputil.h"
#include "libavutil/common.h"

static const float amptable[8]={
     0.515625,  0.90234375,  1.57910156,  2.76342773,
    -0.515625, -0.90234375, -1.57910156, -2.76342773
};

static const int16_t codetable[128][5]={
    {   668, -2950, -1254, -1790, -2553}, { -5032, -4577, -1045,  2908,  3318},
    { -2819, -2677,  -948, -2825, -4450}, { -6679,  -340,  1482, -1276,  1262},
    {  -562, -6757,  1281,   179, -1274}, { -2512, -7130, -4925,  6913,  2411},
    { -2478,  -156,  4683, -3873,     0}, { -8208,  2140,  -478, -2785,   533},
    {  1889,  2759,  1381, -6955, -5913}, {  5082, -2460, -5778,  1797,   568},
    { -2208, -3309, -4523, -6236, -7505}, { -2719,  4358, -2988, -1149,  2664},
    {  1259,   995,  2711, -2464,-10390}, {  1722, -7569, -2742,  2171, -2329},
    {  1032,   747,  -858, -7946,-12843}, {  3106,  4856, -4193, -2541,  1035},
    {  1862,  -960, -6628,   410,  5882}, { -2493, -2628, -4000,   -60,  7202},
    { -2672,  1446,  1536, -3831,  1233}, { -5302,  6912,  1589, -4187,  3665},
    { -3456, -8170, -7709,  1384,  4698}, { -4699, -6209,-11176,  8104, 16830},
    {   930,  7004,  1269, -8977,  2567}, {  4649, 11804,  3441, -5657,  1199},
    {  2542,  -183, -8859, -7976,  3230}, { -2872, -2011, -9713, -8385, 12983},
    {  3086,  2140, -3680, -9643, -2896}, { -7609,  6515, -2283, -2522,  6332},
    { -3333, -5620, -9130,-11131,  5543}, {  -407, -6721,-17466, -2889, 11568},
    {  3692,  6796,  -262,-10846, -1856}, {  7275, 13404, -2989,-10595,  4936},
    {   244, -2219,  2656,  3776, -5412}, { -4043, -5934,  2131,   863, -2866},
    { -3302,  1743, -2006,  -128, -2052}, { -6361,  3342, -1583,   -21,  1142},
    { -3837, -1831,  6397,  2545, -2848}, { -9332, -6528,  5309,  1986, -2245},
    { -4490,   748,  1935, -3027,  -493}, { -9255,  5366,  3193, -4493,  1784},
    {  4784,  -370,  1866,  1057, -1889}, {  7342, -2690, -2577,   676,  -611},
    {  -502,  2235, -1850, -1777, -2049}, {  1011,  3880, -2465,  2209,  -152},
    {  2592,  2829,  5588,  2839, -7306}, { -3049, -4918,  5955,  9201, -4447},
    {   697,  3908,  5798, -4451, -4644}, { -2121,  5444, -2570,   321, -1202},
    {  2846, -2086,  3532,   566,  -708}, { -4279,   950,  4980,  3749,   452},
    { -2484,  3502,  1719,  -170,   238}, { -3435,   263,  2114, -2005,  2361},
    { -7338, -1208,  9347, -1216, -4013}, {-13498,  -439,  8028, -4232,   361},
    { -3729,  5433,  2004, -4727, -1259}, { -3986,  7743,  8429, -3691,  -987},
    {  5198,  -423,  1150, -1281,   816}, {  7409,  4109, -3949,  2690,    30},
    {  1246,  3055,   -35, -1370,  -246}, { -1489,  5635,  -678, -2627,  3170},
    {  4830, -4585,  2008, -1062,   799}, {  -129,   717,  4594, 14937, 10706},
    {   417,  2759,  1850, -5057, -1153}, { -3887,  7361, -5768,  4285,   666},
    {  1443,  -938,    20, -2119, -1697}, { -3712, -3402, -2212,   110,  2136},
    { -2952,    12, -1568, -3500, -1855}, { -1315, -1731,  1160,  -558,  1709},
    {    88, -4569,   194,  -454, -2957}, { -2839, -1666,  -273,  2084,  -155},
    {  -189, -2376,  1663, -1040, -2449}, { -2842, -1369,   636,  -248, -2677},
    {  1517,    79, -3013, -3669,  -973}, {  1913, -2493, -5312,  -749,  1271},
    { -2903, -3324, -3756, -3690, -1829}, { -2913, -1547, -2760, -1406,  1124},
    {  1844, -1834,   456,   706, -4272}, {   467, -4256, -1909,  1521,  1134},
    {  -127,  -994,  -637, -1491, -6494}, {   873, -2045, -3828, -2792,  -578},
    {  2311, -1817,  2632, -3052,  1968}, {   641,  1194,  1893,  4107,  6342},
    {   -45,  1198,  2160, -1449,  2203}, { -2004,  1713,  3518,  2652,  4251},
    {  2936, -3968,  1280,   131, -1476}, {  2827,     8, -1928,  2658,  3513},
    {  3199,  -816,  2687, -1741, -1407}, {  2948,  4029,   394,  -253,  1298},
    {  4286,    51, -4507,   -32,  -659}, {  3903,  5646, -5588, -2592,  5707},
    {  -606,  1234, -1607, -5187,   664}, {  -525,  3620, -2192, -2527,  1707},
    {  4297, -3251, -2283,   812, -2264}, {  5765,   528, -3287,  1352,  1672},
    {  2735,  1241, -1103, -3273, -3407}, {  4033,  1648, -2965, -1174,  1444},
    {    74,   918,  1999,   915, -1026}, { -2496, -1605,  2034,  2950,   229},
    { -2168,  2037,    15, -1264,  -208}, { -3552,  1530,   581,  1491,   962},
    { -2613, -2338,  3621, -1488, -2185}, { -1747,    81,  5538,  1432, -2257},
    { -1019,   867,   214, -2284, -1510}, { -1684,  2816,  -229,  2551, -1389},
    {  2707,   504,   479,  2783, -1009}, {  2517, -1487, -1596,   621,  1929},
    {  -148,  2206, -4288,  1292, -1401}, {  -527,  1243, -2731,  1909,  1280},
    {  2149, -1501,  3688,   610, -4591}, {  3306, -3369,  1875,  3636, -1217},
    {  2574,  2513,  1449, -3074, -4979}, {   814,  1826, -2497,  4234, -4077},
    {  1664,  -220,  3418,  1002,  1115}, {   781,  1658,  3919,  6130,  3140},
    {  1148,  4065,  1516,   815,   199}, {  1191,  2489,  2561,  2421,  2443},
    {   770, -5915,  5515,  -368, -3199}, {  1190,  1047,  3742,  6927, -2089},
    {   292,  3099,  4308,  -758, -2455}, {   523,  3921,  4044,  1386,    85},
    {  4367,  1006, -1252, -1466, -1383}, {  3852,  1579,   -77,  2064,   868},
    {  5109,  2919,  -202,   359,  -509}, {  3650,  3206,  2303,  1693,  1296},
    {  2905, -3907,   229, -1196, -2332}, {  5977, -3585,   805,  3825, -3138},
    {  3746,  -606,    53,  -269, -3301}, {   606,  2018, -1316,  4064,   398}
};

DECLARE_ALIGNED(32, static const float, syn_window)[FFALIGN(111, 16)]={
  0.576690972, 0.580838025, 0.585013986, 0.589219987, 0.59345597,  0.597723007,
  0.602020264, 0.606384277, 0.610748291, 0.615142822, 0.619598389, 0.624084473,
  0.628570557, 0.633117676, 0.637695313, 0.642272949, 0.646911621, 0.651580811,
  0.656280518, 0.66104126,  0.665802002, 0.670593262, 0.675445557, 0.680328369,
  0.685241699, 0.690185547, 0.695159912, 0.700164795, 0.705230713, 0.710327148,
  0.715454102, 0.720611572, 0.725830078, 0.731048584, 0.736328125, 0.741638184,
  0.747009277, 0.752380371, 0.7578125,   0.763305664, 0.768798828, 0.774353027,
  0.779937744, 0.785583496, 0.791229248, 0.796936035, 0.802703857, 0.808502197,
  0.814331055, 0.820220947, 0.826141357, 0.832092285, 0.838104248, 0.844146729,
  0.850250244, 0.856384277, 0.862548828, 0.868774414, 0.875061035, 0.881378174,
  0.88772583,  0.894134521, 0.900604248, 0.907104492, 0.913635254, 0.920227051,
  0.926879883, 0.933563232, 0.940307617, 0.94708252,  0.953918457, 0.96081543,
  0.96774292,  0.974731445, 0.981781006, 0.988861084, 0.994842529, 0.998565674,
  0.999969482, 0.99911499,  0.996002197, 0.990600586, 0.982910156, 0.973022461,
  0.960876465, 0.946533203, 0.930053711, 0.911437988, 0.89074707,  0.868041992,
  0.843322754, 0.816680908, 0.788208008, 0.757904053, 0.725891113, 0.692199707,
  0.656921387, 0.620178223, 0.582000732, 0.542480469, 0.501739502, 0.459838867,
  0.416900635, 0.373016357, 0.328277588, 0.282775879, 0.236663818, 0.189971924,
  0.142852783, 0.0954284668,0.0477600098
};

DECLARE_ALIGNED(32, static const float, gain_window)[FFALIGN(38, 16)]={
  0.505699992, 0.524200022, 0.54339999,  0.563300014, 0.583953857, 0.60534668,
  0.627502441, 0.650482178, 0.674316406, 0.699005127, 0.724578857, 0.75112915,
  0.778625488, 0.807128906, 0.836669922, 0.86730957,  0.899078369, 0.932006836,
  0.961486816, 0.982757568, 0.995635986, 1,           0.995819092, 0.983154297,
  0.96206665,  0.932769775, 0.895507813, 0.850585938, 0.798400879, 0.739379883,
  0.674072266, 0.602996826, 0.526763916, 0.446014404, 0.361480713, 0.273834229,
  0.183868408, 0.0923461914
};

/** synthesis bandwidth broadening table */
DECLARE_ALIGNED(32, static const float, syn_bw_tab)[FFALIGN(36, 16)] = {
  0.98828125,  0.976699829, 0.965254128, 0.953942537, 0.942763507, 0.931715488,
  0.920796931, 0.910006344, 0.899342179, 0.888803005, 0.878387332, 0.868093729,
  0.857920766, 0.847867012, 0.837931097, 0.828111589, 0.818407178, 0.808816493,
  0.799338162, 0.789970934, 0.780713439, 0.771564424, 0.762522638, 0.753586829,
  0.744755745, 0.736028135, 0.727402806, 0.718878567, 0.710454226, 0.702128589,
  0.693900526, 0.685768902, 0.677732527, 0.669790328, 0.66194123,  0.654184103
};

/** gain bandwidth broadening table */
DECLARE_ALIGNED(32, static const float, gain_bw_tab)[FFALIGN(10, 16)] = {
  0.90625,     0.821289063, 0.74432373,  0.674499512, 0.61126709,
  0.553955078, 0.50201416,  0.454956055, 0.41229248,  0.373657227
};

#endif /* AVCODEC_RA288_H */