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137 lines
4.9 KiB
C
137 lines
4.9 KiB
C
/********************************************************************
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* *
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* THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. *
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* *
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
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* *
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* THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 *
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* BY THE Xiph.Org FOUNDATION http://www.xiph.org/ *
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* *
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********************************************************************
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function: lookup data
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********************************************************************/
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#ifndef _V_LOOKUP_DATA_H_
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#define _V_LOOKUP_DATA_H_
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#include <ogg/os_types.h>
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#define FROMdB_LOOKUP_SZ 35
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#define FROMdB2_LOOKUP_SZ 32
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#define FROMdB_SHIFT 5
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#define FROMdB2_SHIFT 3
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#define FROMdB2_MASK 31
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static const ogg_int32_t FROMdB_LOOKUP[FROMdB_LOOKUP_SZ]={
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0x003fffff, 0x0028619b, 0x00197a96, 0x0010137a,
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0x000a24b0, 0x00066666, 0x000409c3, 0x00028c42,
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0x00019b8c, 0x000103ab, 0x0000a3d7, 0x00006760,
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0x0000413a, 0x00002928, 0x000019f8, 0x00001062,
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0x00000a56, 0x00000686, 0x0000041e, 0x00000299,
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0x000001a3, 0x00000109, 0x000000a7, 0x00000069,
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0x00000042, 0x0000002a, 0x0000001a, 0x00000011,
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0x0000000b, 0x00000007, 0x00000004, 0x00000003,
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0x00000002, 0x00000001, 0x00000001};
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static const ogg_int32_t FROMdB2_LOOKUP[FROMdB2_LOOKUP_SZ]={
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0x000001fc, 0x000001f5, 0x000001ee, 0x000001e7,
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0x000001e0, 0x000001d9, 0x000001d2, 0x000001cc,
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0x000001c5, 0x000001bf, 0x000001b8, 0x000001b2,
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0x000001ac, 0x000001a6, 0x000001a0, 0x0000019a,
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0x00000194, 0x0000018e, 0x00000188, 0x00000183,
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0x0000017d, 0x00000178, 0x00000172, 0x0000016d,
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0x00000168, 0x00000163, 0x0000015e, 0x00000159,
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0x00000154, 0x0000014f, 0x0000014a, 0x00000145,
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};
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#define INVSQ_LOOKUP_I_SHIFT 10
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#define INVSQ_LOOKUP_I_MASK 1023
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static const long INVSQ_LOOKUP_I[64+1]={
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92682, 91966, 91267, 90583,
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89915, 89261, 88621, 87995,
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87381, 86781, 86192, 85616,
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85051, 84497, 83953, 83420,
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82897, 82384, 81880, 81385,
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80899, 80422, 79953, 79492,
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79039, 78594, 78156, 77726,
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77302, 76885, 76475, 76072,
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75674, 75283, 74898, 74519,
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74146, 73778, 73415, 73058,
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72706, 72359, 72016, 71679,
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71347, 71019, 70695, 70376,
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70061, 69750, 69444, 69141,
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68842, 68548, 68256, 67969,
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67685, 67405, 67128, 66855,
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66585, 66318, 66054, 65794,
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65536,
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};
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static const long INVSQ_LOOKUP_IDel[64]={
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716, 699, 684, 668,
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654, 640, 626, 614,
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600, 589, 576, 565,
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554, 544, 533, 523,
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513, 504, 495, 486,
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477, 469, 461, 453,
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445, 438, 430, 424,
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417, 410, 403, 398,
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391, 385, 379, 373,
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368, 363, 357, 352,
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347, 343, 337, 332,
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328, 324, 319, 315,
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311, 306, 303, 299,
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294, 292, 287, 284,
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280, 277, 273, 270,
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267, 264, 260, 258,
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};
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#define COS_LOOKUP_I_SHIFT 9
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#define COS_LOOKUP_I_MASK 511
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#define COS_LOOKUP_I_SZ 128
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static const ogg_int32_t COS_LOOKUP_I[COS_LOOKUP_I_SZ+1]={
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16384, 16379, 16364, 16340,
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16305, 16261, 16207, 16143,
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16069, 15986, 15893, 15791,
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15679, 15557, 15426, 15286,
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15137, 14978, 14811, 14635,
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14449, 14256, 14053, 13842,
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13623, 13395, 13160, 12916,
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12665, 12406, 12140, 11866,
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11585, 11297, 11003, 10702,
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10394, 10080, 9760, 9434,
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9102, 8765, 8423, 8076,
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7723, 7366, 7005, 6639,
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6270, 5897, 5520, 5139,
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4756, 4370, 3981, 3590,
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3196, 2801, 2404, 2006,
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1606, 1205, 804, 402,
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0, -401, -803, -1204,
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-1605, -2005, -2403, -2800,
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-3195, -3589, -3980, -4369,
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-4755, -5138, -5519, -5896,
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-6269, -6638, -7004, -7365,
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-7722, -8075, -8422, -8764,
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-9101, -9433, -9759, -10079,
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-10393, -10701, -11002, -11296,
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-11584, -11865, -12139, -12405,
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-12664, -12915, -13159, -13394,
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-13622, -13841, -14052, -14255,
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-14448, -14634, -14810, -14977,
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-15136, -15285, -15425, -15556,
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-15678, -15790, -15892, -15985,
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-16068, -16142, -16206, -16260,
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-16304, -16339, -16363, -16378,
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-16383,
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};
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#endif
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