1 /******************************************************************** |
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2 * * |
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3 * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * |
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4 * * |
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5 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
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6 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
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7 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
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8 * * |
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9 * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * |
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10 * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * |
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11 * * |
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12 ******************************************************************** |
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13 |
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14 function: lookup data |
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15 |
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16 ********************************************************************/ |
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17 |
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18 #ifndef _V_LOOKUP_DATA_H_ |
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19 #define _V_LOOKUP_DATA_H_ |
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20 |
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21 #include "os_types.h" |
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22 |
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23 #define FROMdB_LOOKUP_SZ 35 |
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24 #define FROMdB2_LOOKUP_SZ 32 |
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25 #define FROMdB_SHIFT 5 |
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26 #define FROMdB2_SHIFT 3 |
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27 #define FROMdB2_MASK 31 |
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28 |
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29 static const ogg_int32_t FROMdB_LOOKUP[FROMdB_LOOKUP_SZ]={ |
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30 0x003fffff, 0x0028619b, 0x00197a96, 0x0010137a, |
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31 0x000a24b0, 0x00066666, 0x000409c3, 0x00028c42, |
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32 0x00019b8c, 0x000103ab, 0x0000a3d7, 0x00006760, |
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33 0x0000413a, 0x00002928, 0x000019f8, 0x00001062, |
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34 0x00000a56, 0x00000686, 0x0000041e, 0x00000299, |
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35 0x000001a3, 0x00000109, 0x000000a7, 0x00000069, |
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36 0x00000042, 0x0000002a, 0x0000001a, 0x00000011, |
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37 0x0000000b, 0x00000007, 0x00000004, 0x00000003, |
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38 0x00000002, 0x00000001, 0x00000001}; |
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39 |
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40 static const ogg_int32_t FROMdB2_LOOKUP[FROMdB2_LOOKUP_SZ]={ |
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41 0x000001fc, 0x000001f5, 0x000001ee, 0x000001e7, |
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42 0x000001e0, 0x000001d9, 0x000001d2, 0x000001cc, |
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43 0x000001c5, 0x000001bf, 0x000001b8, 0x000001b2, |
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44 0x000001ac, 0x000001a6, 0x000001a0, 0x0000019a, |
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45 0x00000194, 0x0000018e, 0x00000188, 0x00000183, |
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46 0x0000017d, 0x00000178, 0x00000172, 0x0000016d, |
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47 0x00000168, 0x00000163, 0x0000015e, 0x00000159, |
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48 0x00000154, 0x0000014f, 0x0000014a, 0x00000145, |
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49 }; |
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50 |
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51 #define INVSQ_LOOKUP_I_SHIFT 10 |
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52 #define INVSQ_LOOKUP_I_MASK 1023 |
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53 static const long INVSQ_LOOKUP_I[64+1]={ |
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54 92682, 91966, 91267, 90583, |
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55 89915, 89261, 88621, 87995, |
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56 87381, 86781, 86192, 85616, |
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57 85051, 84497, 83953, 83420, |
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58 82897, 82384, 81880, 81385, |
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59 80899, 80422, 79953, 79492, |
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60 79039, 78594, 78156, 77726, |
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61 77302, 76885, 76475, 76072, |
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62 75674, 75283, 74898, 74519, |
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63 74146, 73778, 73415, 73058, |
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64 72706, 72359, 72016, 71679, |
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65 71347, 71019, 70695, 70376, |
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66 70061, 69750, 69444, 69141, |
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67 68842, 68548, 68256, 67969, |
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68 67685, 67405, 67128, 66855, |
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69 66585, 66318, 66054, 65794, |
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70 65536, |
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71 }; |
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72 |
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73 static const long INVSQ_LOOKUP_IDel[64]={ |
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74 716, 699, 684, 668, |
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75 654, 640, 626, 614, |
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76 600, 589, 576, 565, |
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77 554, 544, 533, 523, |
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78 513, 504, 495, 486, |
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79 477, 469, 461, 453, |
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80 445, 438, 430, 424, |
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81 417, 410, 403, 398, |
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82 391, 385, 379, 373, |
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83 368, 363, 357, 352, |
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84 347, 343, 337, 332, |
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85 328, 324, 319, 315, |
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86 311, 306, 303, 299, |
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87 294, 292, 287, 284, |
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88 280, 277, 273, 270, |
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89 267, 264, 260, 258, |
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90 }; |
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91 |
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92 #define COS_LOOKUP_I_SHIFT 9 |
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93 #define COS_LOOKUP_I_MASK 511 |
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94 #define COS_LOOKUP_I_SZ 128 |
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95 static const ogg_int32_t COS_LOOKUP_I[COS_LOOKUP_I_SZ+1]={ |
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96 16384, 16379, 16364, 16340, |
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97 16305, 16261, 16207, 16143, |
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98 16069, 15986, 15893, 15791, |
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99 15679, 15557, 15426, 15286, |
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100 15137, 14978, 14811, 14635, |
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101 14449, 14256, 14053, 13842, |
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102 13623, 13395, 13160, 12916, |
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103 12665, 12406, 12140, 11866, |
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104 11585, 11297, 11003, 10702, |
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105 10394, 10080, 9760, 9434, |
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106 9102, 8765, 8423, 8076, |
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107 7723, 7366, 7005, 6639, |
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108 6270, 5897, 5520, 5139, |
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109 4756, 4370, 3981, 3590, |
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110 3196, 2801, 2404, 2006, |
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111 1606, 1205, 804, 402, |
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112 0, -401, -803, -1204, |
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113 -1605, -2005, -2403, -2800, |
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114 -3195, -3589, -3980, -4369, |
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115 -4755, -5138, -5519, -5896, |
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116 -6269, -6638, -7004, -7365, |
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117 -7722, -8075, -8422, -8764, |
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118 -9101, -9433, -9759, -10079, |
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119 -10393, -10701, -11002, -11296, |
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120 -11584, -11865, -12139, -12405, |
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121 -12664, -12915, -13159, -13394, |
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122 -13622, -13841, -14052, -14255, |
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123 -14448, -14634, -14810, -14977, |
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124 -15136, -15285, -15425, -15556, |
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125 -15678, -15790, -15892, -15985, |
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126 -16068, -16142, -16206, -16260, |
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127 -16304, -16339, -16363, -16378, |
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128 -16383, |
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129 }; |
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130 |
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131 #endif |
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132 |
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133 |
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134 |
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135 |
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136 |
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