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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 
00027 static const float amptable[8]={
00028      0.515625,  0.90234375,  1.57910156,  2.76342773,
00029     -0.515625, -0.90234375, -1.57910156, -2.76342773
00030 };
00031 
00032 static const int16_t codetable[128][5]={
00033     {   668, -2950, -1254, -1790, -2553}, { -5032, -4577, -1045,  2908,  3318},
00034     { -2819, -2677,  -948, -2825, -4450}, { -6679,  -340,  1482, -1276,  1262},
00035     {  -562, -6757,  1281,   179, -1274}, { -2512, -7130, -4925,  6913,  2411},
00036     { -2478,  -156,  4683, -3873,     0}, { -8208,  2140,  -478, -2785,   533},
00037     {  1889,  2759,  1381, -6955, -5913}, {  5082, -2460, -5778,  1797,   568},
00038     { -2208, -3309, -4523, -6236, -7505}, { -2719,  4358, -2988, -1149,  2664},
00039     {  1259,   995,  2711, -2464,-10390}, {  1722, -7569, -2742,  2171, -2329},
00040     {  1032,   747,  -858, -7946,-12843}, {  3106,  4856, -4193, -2541,  1035},
00041     {  1862,  -960, -6628,   410,  5882}, { -2493, -2628, -4000,   -60,  7202},
00042     { -2672,  1446,  1536, -3831,  1233}, { -5302,  6912,  1589, -4187,  3665},
00043     { -3456, -8170, -7709,  1384,  4698}, { -4699, -6209,-11176,  8104, 16830},
00044     {   930,  7004,  1269, -8977,  2567}, {  4649, 11804,  3441, -5657,  1199},
00045     {  2542,  -183, -8859, -7976,  3230}, { -2872, -2011, -9713, -8385, 12983},
00046     {  3086,  2140, -3680, -9643, -2896}, { -7609,  6515, -2283, -2522,  6332},
00047     { -3333, -5620, -9130,-11131,  5543}, {  -407, -6721,-17466, -2889, 11568},
00048     {  3692,  6796,  -262,-10846, -1856}, {  7275, 13404, -2989,-10595,  4936},
00049     {   244, -2219,  2656,  3776, -5412}, { -4043, -5934,  2131,   863, -2866},
00050     { -3302,  1743, -2006,  -128, -2052}, { -6361,  3342, -1583,   -21,  1142},
00051     { -3837, -1831,  6397,  2545, -2848}, { -9332, -6528,  5309,  1986, -2245},
00052     { -4490,   748,  1935, -3027,  -493}, { -9255,  5366,  3193, -4493,  1784},
00053     {  4784,  -370,  1866,  1057, -1889}, {  7342, -2690, -2577,   676,  -611},
00054     {  -502,  2235, -1850, -1777, -2049}, {  1011,  3880, -2465,  2209,  -152},
00055     {  2592,  2829,  5588,  2839, -7306}, { -3049, -4918,  5955,  9201, -4447},
00056     {   697,  3908,  5798, -4451, -4644}, { -2121,  5444, -2570,   321, -1202},
00057     {  2846, -2086,  3532,   566,  -708}, { -4279,   950,  4980,  3749,   452},
00058     { -2484,  3502,  1719,  -170,   238}, { -3435,   263,  2114, -2005,  2361},
00059     { -7338, -1208,  9347, -1216, -4013}, {-13498,  -439,  8028, -4232,   361},
00060     { -3729,  5433,  2004, -4727, -1259}, { -3986,  7743,  8429, -3691,  -987},
00061     {  5198,  -423,  1150, -1281,   816}, {  7409,  4109, -3949,  2690,    30},
00062     {  1246,  3055,   -35, -1370,  -246}, { -1489,  5635,  -678, -2627,  3170},
00063     {  4830, -4585,  2008, -1062,   799}, {  -129,   717,  4594, 14937, 10706},
00064     {   417,  2759,  1850, -5057, -1153}, { -3887,  7361, -5768,  4285,   666},
00065     {  1443,  -938,    20, -2119, -1697}, { -3712, -3402, -2212,   110,  2136},
00066     { -2952,    12, -1568, -3500, -1855}, { -1315, -1731,  1160,  -558,  1709},
00067     {    88, -4569,   194,  -454, -2957}, { -2839, -1666,  -273,  2084,  -155},
00068     {  -189, -2376,  1663, -1040, -2449}, { -2842, -1369,   636,  -248, -2677},
00069     {  1517,    79, -3013, -3669,  -973}, {  1913, -2493, -5312,  -749,  1271},
00070     { -2903, -3324, -3756, -3690, -1829}, { -2913, -1547, -2760, -1406,  1124},
00071     {  1844, -1834,   456,   706, -4272}, {   467, -4256, -1909,  1521,  1134},
00072     {  -127,  -994,  -637, -1491, -6494}, {   873, -2045, -3828, -2792,  -578},
00073     {  2311, -1817,  2632, -3052,  1968}, {   641,  1194,  1893,  4107,  6342},
00074     {   -45,  1198,  2160, -1449,  2203}, { -2004,  1713,  3518,  2652,  4251},
00075     {  2936, -3968,  1280,   131, -1476}, {  2827,     8, -1928,  2658,  3513},
00076     {  3199,  -816,  2687, -1741, -1407}, {  2948,  4029,   394,  -253,  1298},
00077     {  4286,    51, -4507,   -32,  -659}, {  3903,  5646, -5588, -2592,  5707},
00078     {  -606,  1234, -1607, -5187,   664}, {  -525,  3620, -2192, -2527,  1707},
00079     {  4297, -3251, -2283,   812, -2264}, {  5765,   528, -3287,  1352,  1672},
00080     {  2735,  1241, -1103, -3273, -3407}, {  4033,  1648, -2965, -1174,  1444},
00081     {    74,   918,  1999,   915, -1026}, { -2496, -1605,  2034,  2950,   229},
00082     { -2168,  2037,    15, -1264,  -208}, { -3552,  1530,   581,  1491,   962},
00083     { -2613, -2338,  3621, -1488, -2185}, { -1747,    81,  5538,  1432, -2257},
00084     { -1019,   867,   214, -2284, -1510}, { -1684,  2816,  -229,  2551, -1389},
00085     {  2707,   504,   479,  2783, -1009}, {  2517, -1487, -1596,   621,  1929},
00086     {  -148,  2206, -4288,  1292, -1401}, {  -527,  1243, -2731,  1909,  1280},
00087     {  2149, -1501,  3688,   610, -4591}, {  3306, -3369,  1875,  3636, -1217},
00088     {  2574,  2513,  1449, -3074, -4979}, {   814,  1826, -2497,  4234, -4077},
00089     {  1664,  -220,  3418,  1002,  1115}, {   781,  1658,  3919,  6130,  3140},
00090     {  1148,  4065,  1516,   815,   199}, {  1191,  2489,  2561,  2421,  2443},
00091     {   770, -5915,  5515,  -368, -3199}, {  1190,  1047,  3742,  6927, -2089},
00092     {   292,  3099,  4308,  -758, -2455}, {   523,  3921,  4044,  1386,    85},
00093     {  4367,  1006, -1252, -1466, -1383}, {  3852,  1579,   -77,  2064,   868},
00094     {  5109,  2919,  -202,   359,  -509}, {  3650,  3206,  2303,  1693,  1296},
00095     {  2905, -3907,   229, -1196, -2332}, {  5977, -3585,   805,  3825, -3138},
00096     {  3746,  -606,    53,  -269, -3301}, {   606,  2018, -1316,  4064,   398}
00097 };
00098 
00099 static const float syn_window[111]={
00100   0.576690972, 0.580838025, 0.585013986, 0.589219987, 0.59345597,  0.597723007,
00101   0.602020264, 0.606384277, 0.610748291, 0.615142822, 0.619598389, 0.624084473,
00102   0.628570557, 0.633117676, 0.637695313, 0.642272949, 0.646911621, 0.651580811,
00103   0.656280518, 0.66104126,  0.665802002, 0.670593262, 0.675445557, 0.680328369,
00104   0.685241699, 0.690185547, 0.695159912, 0.700164795, 0.705230713, 0.710327148,
00105   0.715454102, 0.720611572, 0.725830078, 0.731048584, 0.736328125, 0.741638184,
00106   0.747009277, 0.752380371, 0.7578125,   0.763305664, 0.768798828, 0.774353027,
00107   0.779937744, 0.785583496, 0.791229248, 0.796936035, 0.802703857, 0.808502197,
00108   0.814331055, 0.820220947, 0.826141357, 0.832092285, 0.838104248, 0.844146729,
00109   0.850250244, 0.856384277, 0.862548828, 0.868774414, 0.875061035, 0.881378174,
00110   0.88772583,  0.894134521, 0.900604248, 0.907104492, 0.913635254, 0.920227051,
00111   0.926879883, 0.933563232, 0.940307617, 0.94708252,  0.953918457, 0.96081543,
00112   0.96774292,  0.974731445, 0.981781006, 0.988861084, 0.994842529, 0.998565674,
00113   0.999969482, 0.99911499,  0.996002197, 0.990600586, 0.982910156, 0.973022461,
00114   0.960876465, 0.946533203, 0.930053711, 0.911437988, 0.89074707,  0.868041992,
00115   0.843322754, 0.816680908, 0.788208008, 0.757904053, 0.725891113, 0.692199707,
00116   0.656921387, 0.620178223, 0.582000732, 0.542480469, 0.501739502, 0.459838867,
00117   0.416900635, 0.373016357, 0.328277588, 0.282775879, 0.236663818, 0.189971924,
00118   0.142852783, 0.0954284668,0.0477600098
00119 };
00120 
00121 static const float gain_window[38]={
00122   0.505699992, 0.524200022, 0.54339999,  0.563300014, 0.583953857, 0.60534668,
00123   0.627502441, 0.650482178, 0.674316406, 0.699005127, 0.724578857, 0.75112915,
00124   0.778625488, 0.807128906, 0.836669922, 0.86730957,  0.899078369, 0.932006836,
00125   0.961486816, 0.982757568, 0.995635986, 1,           0.995819092, 0.983154297,
00126   0.96206665,  0.932769775, 0.895507813, 0.850585938, 0.798400879, 0.739379883,
00127   0.674072266, 0.602996826, 0.526763916, 0.446014404, 0.361480713, 0.273834229,
00128   0.183868408, 0.0923461914
00129 };
00130 
00132 static const float syn_bw_tab[36]={
00133   0.98828125,  0.976699829, 0.965254128, 0.953942537, 0.942763507, 0.931715488,
00134   0.920796931, 0.910006344, 0.899342179, 0.888803005, 0.878387332, 0.868093729,
00135   0.857920766, 0.847867012, 0.837931097, 0.828111589, 0.818407178, 0.808816493,
00136   0.799338162, 0.789970934, 0.780713439, 0.771564424, 0.762522638, 0.753586829,
00137   0.744755745, 0.736028135, 0.727402806, 0.718878567, 0.710454226, 0.702128589,
00138   0.693900526, 0.685768902, 0.677732527, 0.669790328, 0.66194123,  0.654184103
00139 };
00140 
00142 static const float gain_bw_tab[10]={
00143   0.90625,     0.821289063, 0.74432373,  0.674499512, 0.61126709,
00144   0.553955078, 0.50201416,  0.454956055, 0.41229248,  0.373657227
00145 };
00146 
00147 #endif /* AVCODEC_RA288_H */

Generated on Fri Sep 16 2011 17:17:42 for FFmpeg by  doxygen 1.7.1