ra288.h
Go to the documentation of this file.
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 #include "libavutil/common.h"
27 
28 static const float amptable[8]={
29  0.515625, 0.90234375, 1.57910156, 2.76342773,
30  -0.515625, -0.90234375, -1.57910156, -2.76342773
31 };
32 
33 static const int16_t codetable[128][5]={
34  { 668, -2950, -1254, -1790, -2553}, { -5032, -4577, -1045, 2908, 3318},
35  { -2819, -2677, -948, -2825, -4450}, { -6679, -340, 1482, -1276, 1262},
36  { -562, -6757, 1281, 179, -1274}, { -2512, -7130, -4925, 6913, 2411},
37  { -2478, -156, 4683, -3873, 0}, { -8208, 2140, -478, -2785, 533},
38  { 1889, 2759, 1381, -6955, -5913}, { 5082, -2460, -5778, 1797, 568},
39  { -2208, -3309, -4523, -6236, -7505}, { -2719, 4358, -2988, -1149, 2664},
40  { 1259, 995, 2711, -2464,-10390}, { 1722, -7569, -2742, 2171, -2329},
41  { 1032, 747, -858, -7946,-12843}, { 3106, 4856, -4193, -2541, 1035},
42  { 1862, -960, -6628, 410, 5882}, { -2493, -2628, -4000, -60, 7202},
43  { -2672, 1446, 1536, -3831, 1233}, { -5302, 6912, 1589, -4187, 3665},
44  { -3456, -8170, -7709, 1384, 4698}, { -4699, -6209,-11176, 8104, 16830},
45  { 930, 7004, 1269, -8977, 2567}, { 4649, 11804, 3441, -5657, 1199},
46  { 2542, -183, -8859, -7976, 3230}, { -2872, -2011, -9713, -8385, 12983},
47  { 3086, 2140, -3680, -9643, -2896}, { -7609, 6515, -2283, -2522, 6332},
48  { -3333, -5620, -9130,-11131, 5543}, { -407, -6721,-17466, -2889, 11568},
49  { 3692, 6796, -262,-10846, -1856}, { 7275, 13404, -2989,-10595, 4936},
50  { 244, -2219, 2656, 3776, -5412}, { -4043, -5934, 2131, 863, -2866},
51  { -3302, 1743, -2006, -128, -2052}, { -6361, 3342, -1583, -21, 1142},
52  { -3837, -1831, 6397, 2545, -2848}, { -9332, -6528, 5309, 1986, -2245},
53  { -4490, 748, 1935, -3027, -493}, { -9255, 5366, 3193, -4493, 1784},
54  { 4784, -370, 1866, 1057, -1889}, { 7342, -2690, -2577, 676, -611},
55  { -502, 2235, -1850, -1777, -2049}, { 1011, 3880, -2465, 2209, -152},
56  { 2592, 2829, 5588, 2839, -7306}, { -3049, -4918, 5955, 9201, -4447},
57  { 697, 3908, 5798, -4451, -4644}, { -2121, 5444, -2570, 321, -1202},
58  { 2846, -2086, 3532, 566, -708}, { -4279, 950, 4980, 3749, 452},
59  { -2484, 3502, 1719, -170, 238}, { -3435, 263, 2114, -2005, 2361},
60  { -7338, -1208, 9347, -1216, -4013}, {-13498, -439, 8028, -4232, 361},
61  { -3729, 5433, 2004, -4727, -1259}, { -3986, 7743, 8429, -3691, -987},
62  { 5198, -423, 1150, -1281, 816}, { 7409, 4109, -3949, 2690, 30},
63  { 1246, 3055, -35, -1370, -246}, { -1489, 5635, -678, -2627, 3170},
64  { 4830, -4585, 2008, -1062, 799}, { -129, 717, 4594, 14937, 10706},
65  { 417, 2759, 1850, -5057, -1153}, { -3887, 7361, -5768, 4285, 666},
66  { 1443, -938, 20, -2119, -1697}, { -3712, -3402, -2212, 110, 2136},
67  { -2952, 12, -1568, -3500, -1855}, { -1315, -1731, 1160, -558, 1709},
68  { 88, -4569, 194, -454, -2957}, { -2839, -1666, -273, 2084, -155},
69  { -189, -2376, 1663, -1040, -2449}, { -2842, -1369, 636, -248, -2677},
70  { 1517, 79, -3013, -3669, -973}, { 1913, -2493, -5312, -749, 1271},
71  { -2903, -3324, -3756, -3690, -1829}, { -2913, -1547, -2760, -1406, 1124},
72  { 1844, -1834, 456, 706, -4272}, { 467, -4256, -1909, 1521, 1134},
73  { -127, -994, -637, -1491, -6494}, { 873, -2045, -3828, -2792, -578},
74  { 2311, -1817, 2632, -3052, 1968}, { 641, 1194, 1893, 4107, 6342},
75  { -45, 1198, 2160, -1449, 2203}, { -2004, 1713, 3518, 2652, 4251},
76  { 2936, -3968, 1280, 131, -1476}, { 2827, 8, -1928, 2658, 3513},
77  { 3199, -816, 2687, -1741, -1407}, { 2948, 4029, 394, -253, 1298},
78  { 4286, 51, -4507, -32, -659}, { 3903, 5646, -5588, -2592, 5707},
79  { -606, 1234, -1607, -5187, 664}, { -525, 3620, -2192, -2527, 1707},
80  { 4297, -3251, -2283, 812, -2264}, { 5765, 528, -3287, 1352, 1672},
81  { 2735, 1241, -1103, -3273, -3407}, { 4033, 1648, -2965, -1174, 1444},
82  { 74, 918, 1999, 915, -1026}, { -2496, -1605, 2034, 2950, 229},
83  { -2168, 2037, 15, -1264, -208}, { -3552, 1530, 581, 1491, 962},
84  { -2613, -2338, 3621, -1488, -2185}, { -1747, 81, 5538, 1432, -2257},
85  { -1019, 867, 214, -2284, -1510}, { -1684, 2816, -229, 2551, -1389},
86  { 2707, 504, 479, 2783, -1009}, { 2517, -1487, -1596, 621, 1929},
87  { -148, 2206, -4288, 1292, -1401}, { -527, 1243, -2731, 1909, 1280},
88  { 2149, -1501, 3688, 610, -4591}, { 3306, -3369, 1875, 3636, -1217},
89  { 2574, 2513, 1449, -3074, -4979}, { 814, 1826, -2497, 4234, -4077},
90  { 1664, -220, 3418, 1002, 1115}, { 781, 1658, 3919, 6130, 3140},
91  { 1148, 4065, 1516, 815, 199}, { 1191, 2489, 2561, 2421, 2443},
92  { 770, -5915, 5515, -368, -3199}, { 1190, 1047, 3742, 6927, -2089},
93  { 292, 3099, 4308, -758, -2455}, { 523, 3921, 4044, 1386, 85},
94  { 4367, 1006, -1252, -1466, -1383}, { 3852, 1579, -77, 2064, 868},
95  { 5109, 2919, -202, 359, -509}, { 3650, 3206, 2303, 1693, 1296},
96  { 2905, -3907, 229, -1196, -2332}, { 5977, -3585, 805, 3825, -3138},
97  { 3746, -606, 53, -269, -3301}, { 606, 2018, -1316, 4064, 398}
98 };
99 
100 DECLARE_ALIGNED(32, static const float, syn_window)[FFALIGN(111, 16)]={
101  0.576690972, 0.580838025, 0.585013986, 0.589219987, 0.59345597, 0.597723007,
102  0.602020264, 0.606384277, 0.610748291, 0.615142822, 0.619598389, 0.624084473,
103  0.628570557, 0.633117676, 0.637695313, 0.642272949, 0.646911621, 0.651580811,
104  0.656280518, 0.66104126, 0.665802002, 0.670593262, 0.675445557, 0.680328369,
105  0.685241699, 0.690185547, 0.695159912, 0.700164795, 0.705230713, 0.710327148,
106  0.715454102, 0.720611572, 0.725830078, 0.731048584, 0.736328125, 0.741638184,
107  0.747009277, 0.752380371, 0.7578125, 0.763305664, 0.768798828, 0.774353027,
108  0.779937744, 0.785583496, 0.791229248, 0.796936035, 0.802703857, 0.808502197,
109  0.814331055, 0.820220947, 0.826141357, 0.832092285, 0.838104248, 0.844146729,
110  0.850250244, 0.856384277, 0.862548828, 0.868774414, 0.875061035, 0.881378174,
111  0.88772583, 0.894134521, 0.900604248, 0.907104492, 0.913635254, 0.920227051,
112  0.926879883, 0.933563232, 0.940307617, 0.94708252, 0.953918457, 0.96081543,
113  0.96774292, 0.974731445, 0.981781006, 0.988861084, 0.994842529, 0.998565674,
114  0.999969482, 0.99911499, 0.996002197, 0.990600586, 0.982910156, 0.973022461,
115  0.960876465, 0.946533203, 0.930053711, 0.911437988, 0.89074707, 0.868041992,
116  0.843322754, 0.816680908, 0.788208008, 0.757904053, 0.725891113, 0.692199707,
117  0.656921387, 0.620178223, 0.582000732, 0.542480469, 0.501739502, 0.459838867,
118  0.416900635, 0.373016357, 0.328277588, 0.282775879, 0.236663818, 0.189971924,
119  0.142852783, 0.0954284668,0.0477600098
120 };
121 
122 DECLARE_ALIGNED(32, static const float, gain_window)[FFALIGN(38, 16)]={
123  0.505699992, 0.524200022, 0.54339999, 0.563300014, 0.583953857, 0.60534668,
124  0.627502441, 0.650482178, 0.674316406, 0.699005127, 0.724578857, 0.75112915,
125  0.778625488, 0.807128906, 0.836669922, 0.86730957, 0.899078369, 0.932006836,
126  0.961486816, 0.982757568, 0.995635986, 1, 0.995819092, 0.983154297,
127  0.96206665, 0.932769775, 0.895507813, 0.850585938, 0.798400879, 0.739379883,
128  0.674072266, 0.602996826, 0.526763916, 0.446014404, 0.361480713, 0.273834229,
129  0.183868408, 0.0923461914
130 };
131 
132 /** synthesis bandwidth broadening table */
133 DECLARE_ALIGNED(32, static const float, syn_bw_tab)[FFALIGN(36, 16)] = {
134  0.98828125, 0.976699829, 0.965254128, 0.953942537, 0.942763507, 0.931715488,
135  0.920796931, 0.910006344, 0.899342179, 0.888803005, 0.878387332, 0.868093729,
136  0.857920766, 0.847867012, 0.837931097, 0.828111589, 0.818407178, 0.808816493,
137  0.799338162, 0.789970934, 0.780713439, 0.771564424, 0.762522638, 0.753586829,
138  0.744755745, 0.736028135, 0.727402806, 0.718878567, 0.710454226, 0.702128589,
139  0.693900526, 0.685768902, 0.677732527, 0.669790328, 0.66194123, 0.654184103
140 };
141 
142 /** gain bandwidth broadening table */
143 DECLARE_ALIGNED(32, static const float, gain_bw_tab)[FFALIGN(10, 16)] = {
144  0.90625, 0.821289063, 0.74432373, 0.674499512, 0.61126709,
145  0.553955078, 0.50201416, 0.454956055, 0.41229248, 0.373657227
146 };
147 
148 #endif /* AVCODEC_RA288_H */
DECLARE_ALIGNED
DECLARE_ALIGNED(32, static const float, syn_window)[FFALIGN(111
amptable
static const float amptable[8]
Definition: ra288.h:28
FFALIGN
#define FFALIGN(x, a)
Definition: common.h:63
codetable
static const int16_t codetable[128][5]
Definition: ra288.h:33
common.h
common internal and external API header
Generated on Fri Dec 20 2024 06:56:05 for FFmpeg by   doxygen 1.8.11