libavcodec/ra288.h
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00001 /*
00002  * RealAudio 2.0 (28.8K)
00003  * Copyright (c) 2003 the ffmpeg project
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #ifndef AVCODEC_RA288_H
00023 #define AVCODEC_RA288_H
00024 
00025 #include <stdint.h>
00026 #include "dsputil.h"
00027 
00028 static const float amptable[8]={
00029      0.515625,  0.90234375,  1.57910156,  2.76342773,
00030     -0.515625, -0.90234375, -1.57910156, -2.76342773
00031 };
00032 
00033 static const int16_t codetable[128][5]={
00034     {   668, -2950, -1254, -1790, -2553}, { -5032, -4577, -1045,  2908,  3318},
00035     { -2819, -2677,  -948, -2825, -4450}, { -6679,  -340,  1482, -1276,  1262},
00036     {  -562, -6757,  1281,   179, -1274}, { -2512, -7130, -4925,  6913,  2411},
00037     { -2478,  -156,  4683, -3873,     0}, { -8208,  2140,  -478, -2785,   533},
00038     {  1889,  2759,  1381, -6955, -5913}, {  5082, -2460, -5778,  1797,   568},
00039     { -2208, -3309, -4523, -6236, -7505}, { -2719,  4358, -2988, -1149,  2664},
00040     {  1259,   995,  2711, -2464,-10390}, {  1722, -7569, -2742,  2171, -2329},
00041     {  1032,   747,  -858, -7946,-12843}, {  3106,  4856, -4193, -2541,  1035},
00042     {  1862,  -960, -6628,   410,  5882}, { -2493, -2628, -4000,   -60,  7202},
00043     { -2672,  1446,  1536, -3831,  1233}, { -5302,  6912,  1589, -4187,  3665},
00044     { -3456, -8170, -7709,  1384,  4698}, { -4699, -6209,-11176,  8104, 16830},
00045     {   930,  7004,  1269, -8977,  2567}, {  4649, 11804,  3441, -5657,  1199},
00046     {  2542,  -183, -8859, -7976,  3230}, { -2872, -2011, -9713, -8385, 12983},
00047     {  3086,  2140, -3680, -9643, -2896}, { -7609,  6515, -2283, -2522,  6332},
00048     { -3333, -5620, -9130,-11131,  5543}, {  -407, -6721,-17466, -2889, 11568},
00049     {  3692,  6796,  -262,-10846, -1856}, {  7275, 13404, -2989,-10595,  4936},
00050     {   244, -2219,  2656,  3776, -5412}, { -4043, -5934,  2131,   863, -2866},
00051     { -3302,  1743, -2006,  -128, -2052}, { -6361,  3342, -1583,   -21,  1142},
00052     { -3837, -1831,  6397,  2545, -2848}, { -9332, -6528,  5309,  1986, -2245},
00053     { -4490,   748,  1935, -3027,  -493}, { -9255,  5366,  3193, -4493,  1784},
00054     {  4784,  -370,  1866,  1057, -1889}, {  7342, -2690, -2577,   676,  -611},
00055     {  -502,  2235, -1850, -1777, -2049}, {  1011,  3880, -2465,  2209,  -152},
00056     {  2592,  2829,  5588,  2839, -7306}, { -3049, -4918,  5955,  9201, -4447},
00057     {   697,  3908,  5798, -4451, -4644}, { -2121,  5444, -2570,   321, -1202},
00058     {  2846, -2086,  3532,   566,  -708}, { -4279,   950,  4980,  3749,   452},
00059     { -2484,  3502,  1719,  -170,   238}, { -3435,   263,  2114, -2005,  2361},
00060     { -7338, -1208,  9347, -1216, -4013}, {-13498,  -439,  8028, -4232,   361},
00061     { -3729,  5433,  2004, -4727, -1259}, { -3986,  7743,  8429, -3691,  -987},
00062     {  5198,  -423,  1150, -1281,   816}, {  7409,  4109, -3949,  2690,    30},
00063     {  1246,  3055,   -35, -1370,  -246}, { -1489,  5635,  -678, -2627,  3170},
00064     {  4830, -4585,  2008, -1062,   799}, {  -129,   717,  4594, 14937, 10706},
00065     {   417,  2759,  1850, -5057, -1153}, { -3887,  7361, -5768,  4285,   666},
00066     {  1443,  -938,    20, -2119, -1697}, { -3712, -3402, -2212,   110,  2136},
00067     { -2952,    12, -1568, -3500, -1855}, { -1315, -1731,  1160,  -558,  1709},
00068     {    88, -4569,   194,  -454, -2957}, { -2839, -1666,  -273,  2084,  -155},
00069     {  -189, -2376,  1663, -1040, -2449}, { -2842, -1369,   636,  -248, -2677},
00070     {  1517,    79, -3013, -3669,  -973}, {  1913, -2493, -5312,  -749,  1271},
00071     { -2903, -3324, -3756, -3690, -1829}, { -2913, -1547, -2760, -1406,  1124},
00072     {  1844, -1834,   456,   706, -4272}, {   467, -4256, -1909,  1521,  1134},
00073     {  -127,  -994,  -637, -1491, -6494}, {   873, -2045, -3828, -2792,  -578},
00074     {  2311, -1817,  2632, -3052,  1968}, {   641,  1194,  1893,  4107,  6342},
00075     {   -45,  1198,  2160, -1449,  2203}, { -2004,  1713,  3518,  2652,  4251},
00076     {  2936, -3968,  1280,   131, -1476}, {  2827,     8, -1928,  2658,  3513},
00077     {  3199,  -816,  2687, -1741, -1407}, {  2948,  4029,   394,  -253,  1298},
00078     {  4286,    51, -4507,   -32,  -659}, {  3903,  5646, -5588, -2592,  5707},
00079     {  -606,  1234, -1607, -5187,   664}, {  -525,  3620, -2192, -2527,  1707},
00080     {  4297, -3251, -2283,   812, -2264}, {  5765,   528, -3287,  1352,  1672},
00081     {  2735,  1241, -1103, -3273, -3407}, {  4033,  1648, -2965, -1174,  1444},
00082     {    74,   918,  1999,   915, -1026}, { -2496, -1605,  2034,  2950,   229},
00083     { -2168,  2037,    15, -1264,  -208}, { -3552,  1530,   581,  1491,   962},
00084     { -2613, -2338,  3621, -1488, -2185}, { -1747,    81,  5538,  1432, -2257},
00085     { -1019,   867,   214, -2284, -1510}, { -1684,  2816,  -229,  2551, -1389},
00086     {  2707,   504,   479,  2783, -1009}, {  2517, -1487, -1596,   621,  1929},
00087     {  -148,  2206, -4288,  1292, -1401}, {  -527,  1243, -2731,  1909,  1280},
00088     {  2149, -1501,  3688,   610, -4591}, {  3306, -3369,  1875,  3636, -1217},
00089     {  2574,  2513,  1449, -3074, -4979}, {   814,  1826, -2497,  4234, -4077},
00090     {  1664,  -220,  3418,  1002,  1115}, {   781,  1658,  3919,  6130,  3140},
00091     {  1148,  4065,  1516,   815,   199}, {  1191,  2489,  2561,  2421,  2443},
00092     {   770, -5915,  5515,  -368, -3199}, {  1190,  1047,  3742,  6927, -2089},
00093     {   292,  3099,  4308,  -758, -2455}, {   523,  3921,  4044,  1386,    85},
00094     {  4367,  1006, -1252, -1466, -1383}, {  3852,  1579,   -77,  2064,   868},
00095     {  5109,  2919,  -202,   359,  -509}, {  3650,  3206,  2303,  1693,  1296},
00096     {  2905, -3907,   229, -1196, -2332}, {  5977, -3585,   805,  3825, -3138},
00097     {  3746,  -606,    53,  -269, -3301}, {   606,  2018, -1316,  4064,   398}
00098 };
00099 
00100 DECLARE_ALIGNED(16, static const float, syn_window)[FFALIGN(111, 8)]={
00101   0.576690972, 0.580838025, 0.585013986, 0.589219987, 0.59345597,  0.597723007,
00102   0.602020264, 0.606384277, 0.610748291, 0.615142822, 0.619598389, 0.624084473,
00103   0.628570557, 0.633117676, 0.637695313, 0.642272949, 0.646911621, 0.651580811,
00104   0.656280518, 0.66104126,  0.665802002, 0.670593262, 0.675445557, 0.680328369,
00105   0.685241699, 0.690185547, 0.695159912, 0.700164795, 0.705230713, 0.710327148,
00106   0.715454102, 0.720611572, 0.725830078, 0.731048584, 0.736328125, 0.741638184,
00107   0.747009277, 0.752380371, 0.7578125,   0.763305664, 0.768798828, 0.774353027,
00108   0.779937744, 0.785583496, 0.791229248, 0.796936035, 0.802703857, 0.808502197,
00109   0.814331055, 0.820220947, 0.826141357, 0.832092285, 0.838104248, 0.844146729,
00110   0.850250244, 0.856384277, 0.862548828, 0.868774414, 0.875061035, 0.881378174,
00111   0.88772583,  0.894134521, 0.900604248, 0.907104492, 0.913635254, 0.920227051,
00112   0.926879883, 0.933563232, 0.940307617, 0.94708252,  0.953918457, 0.96081543,
00113   0.96774292,  0.974731445, 0.981781006, 0.988861084, 0.994842529, 0.998565674,
00114   0.999969482, 0.99911499,  0.996002197, 0.990600586, 0.982910156, 0.973022461,
00115   0.960876465, 0.946533203, 0.930053711, 0.911437988, 0.89074707,  0.868041992,
00116   0.843322754, 0.816680908, 0.788208008, 0.757904053, 0.725891113, 0.692199707,
00117   0.656921387, 0.620178223, 0.582000732, 0.542480469, 0.501739502, 0.459838867,
00118   0.416900635, 0.373016357, 0.328277588, 0.282775879, 0.236663818, 0.189971924,
00119   0.142852783, 0.0954284668,0.0477600098
00120 };
00121 
00122 DECLARE_ALIGNED(16, static const float, gain_window)[FFALIGN(38, 8)]={
00123   0.505699992, 0.524200022, 0.54339999,  0.563300014, 0.583953857, 0.60534668,
00124   0.627502441, 0.650482178, 0.674316406, 0.699005127, 0.724578857, 0.75112915,
00125   0.778625488, 0.807128906, 0.836669922, 0.86730957,  0.899078369, 0.932006836,
00126   0.961486816, 0.982757568, 0.995635986, 1,           0.995819092, 0.983154297,
00127   0.96206665,  0.932769775, 0.895507813, 0.850585938, 0.798400879, 0.739379883,
00128   0.674072266, 0.602996826, 0.526763916, 0.446014404, 0.361480713, 0.273834229,
00129   0.183868408, 0.0923461914
00130 };
00131 
00133 DECLARE_ALIGNED(16, static const float, syn_bw_tab)[FFALIGN(36, 8)] = {
00134   0.98828125,  0.976699829, 0.965254128, 0.953942537, 0.942763507, 0.931715488,
00135   0.920796931, 0.910006344, 0.899342179, 0.888803005, 0.878387332, 0.868093729,
00136   0.857920766, 0.847867012, 0.837931097, 0.828111589, 0.818407178, 0.808816493,
00137   0.799338162, 0.789970934, 0.780713439, 0.771564424, 0.762522638, 0.753586829,
00138   0.744755745, 0.736028135, 0.727402806, 0.718878567, 0.710454226, 0.702128589,
00139   0.693900526, 0.685768902, 0.677732527, 0.669790328, 0.66194123,  0.654184103
00140 };
00141 
00143 DECLARE_ALIGNED(16, static const float, gain_bw_tab)[FFALIGN(10, 8)] = {
00144   0.90625,     0.821289063, 0.74432373,  0.674499512, 0.61126709,
00145   0.553955078, 0.50201416,  0.454956055, 0.41229248,  0.373657227
00146 };
00147 
00148 #endif /* AVCODEC_RA288_H */