2004-12-30 12:11:32 +00:00
|
|
|
/********************************************************************
|
|
|
|
|
* *
|
|
|
|
|
* THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. *
|
|
|
|
|
* *
|
2006-07-30 01:41:58 +00:00
|
|
|
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
|
|
|
|
|
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
|
|
|
|
|
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
|
|
|
|
|
* *
|
2004-12-30 12:11:32 +00:00
|
|
|
* THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 *
|
|
|
|
|
* BY THE Xiph.Org FOUNDATION http://www.xiph.org/ *
|
|
|
|
|
* *
|
|
|
|
|
********************************************************************
|
|
|
|
|
|
|
|
|
|
function: lookup data
|
|
|
|
|
|
|
|
|
|
********************************************************************/
|
|
|
|
|
|
|
|
|
|
#ifndef _V_LOOKUP_DATA_H_
|
|
|
|
|
#define _V_LOOKUP_DATA_H_
|
|
|
|
|
|
|
|
|
|
#include "os_types.h"
|
|
|
|
|
|
|
|
|
|
#define FROMdB_LOOKUP_SZ 35
|
|
|
|
|
#define FROMdB2_LOOKUP_SZ 32
|
|
|
|
|
#define FROMdB_SHIFT 5
|
|
|
|
|
#define FROMdB2_SHIFT 3
|
|
|
|
|
#define FROMdB2_MASK 31
|
|
|
|
|
|
|
|
|
|
static ogg_int32_t FROMdB_LOOKUP[FROMdB_LOOKUP_SZ]={
|
|
|
|
|
0x003fffff, 0x0028619b, 0x00197a96, 0x0010137a,
|
|
|
|
|
0x000a24b0, 0x00066666, 0x000409c3, 0x00028c42,
|
|
|
|
|
0x00019b8c, 0x000103ab, 0x0000a3d7, 0x00006760,
|
|
|
|
|
0x0000413a, 0x00002928, 0x000019f8, 0x00001062,
|
|
|
|
|
0x00000a56, 0x00000686, 0x0000041e, 0x00000299,
|
|
|
|
|
0x000001a3, 0x00000109, 0x000000a7, 0x00000069,
|
|
|
|
|
0x00000042, 0x0000002a, 0x0000001a, 0x00000011,
|
|
|
|
|
0x0000000b, 0x00000007, 0x00000004, 0x00000003,
|
|
|
|
|
0x00000002, 0x00000001, 0x00000001};
|
|
|
|
|
|
|
|
|
|
static ogg_int32_t FROMdB2_LOOKUP[FROMdB2_LOOKUP_SZ]={
|
|
|
|
|
0x000001fc, 0x000001f5, 0x000001ee, 0x000001e7,
|
|
|
|
|
0x000001e0, 0x000001d9, 0x000001d2, 0x000001cc,
|
|
|
|
|
0x000001c5, 0x000001bf, 0x000001b8, 0x000001b2,
|
|
|
|
|
0x000001ac, 0x000001a6, 0x000001a0, 0x0000019a,
|
|
|
|
|
0x00000194, 0x0000018e, 0x00000188, 0x00000183,
|
|
|
|
|
0x0000017d, 0x00000178, 0x00000172, 0x0000016d,
|
|
|
|
|
0x00000168, 0x00000163, 0x0000015e, 0x00000159,
|
|
|
|
|
0x00000154, 0x0000014f, 0x0000014a, 0x00000145,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define INVSQ_LOOKUP_I_SHIFT 10
|
|
|
|
|
#define INVSQ_LOOKUP_I_MASK 1023
|
|
|
|
|
static long INVSQ_LOOKUP_I[64+1]={
|
|
|
|
|
92682, 91966, 91267, 90583,
|
|
|
|
|
89915, 89261, 88621, 87995,
|
|
|
|
|
87381, 86781, 86192, 85616,
|
|
|
|
|
85051, 84497, 83953, 83420,
|
|
|
|
|
82897, 82384, 81880, 81385,
|
|
|
|
|
80899, 80422, 79953, 79492,
|
|
|
|
|
79039, 78594, 78156, 77726,
|
|
|
|
|
77302, 76885, 76475, 76072,
|
|
|
|
|
75674, 75283, 74898, 74519,
|
|
|
|
|
74146, 73778, 73415, 73058,
|
|
|
|
|
72706, 72359, 72016, 71679,
|
|
|
|
|
71347, 71019, 70695, 70376,
|
|
|
|
|
70061, 69750, 69444, 69141,
|
|
|
|
|
68842, 68548, 68256, 67969,
|
|
|
|
|
67685, 67405, 67128, 66855,
|
|
|
|
|
66585, 66318, 66054, 65794,
|
|
|
|
|
65536,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static long INVSQ_LOOKUP_IDel[64]={
|
|
|
|
|
716, 699, 684, 668,
|
|
|
|
|
654, 640, 626, 614,
|
|
|
|
|
600, 589, 576, 565,
|
|
|
|
|
554, 544, 533, 523,
|
|
|
|
|
513, 504, 495, 486,
|
|
|
|
|
477, 469, 461, 453,
|
|
|
|
|
445, 438, 430, 424,
|
|
|
|
|
417, 410, 403, 398,
|
|
|
|
|
391, 385, 379, 373,
|
|
|
|
|
368, 363, 357, 352,
|
|
|
|
|
347, 343, 337, 332,
|
|
|
|
|
328, 324, 319, 315,
|
|
|
|
|
311, 306, 303, 299,
|
|
|
|
|
294, 292, 287, 284,
|
|
|
|
|
280, 277, 273, 270,
|
|
|
|
|
267, 264, 260, 258,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define COS_LOOKUP_I_SHIFT 9
|
|
|
|
|
#define COS_LOOKUP_I_MASK 511
|
|
|
|
|
#define COS_LOOKUP_I_SZ 128
|
|
|
|
|
static ogg_int32_t COS_LOOKUP_I[COS_LOOKUP_I_SZ+1]={
|
|
|
|
|
16384, 16379, 16364, 16340,
|
|
|
|
|
16305, 16261, 16207, 16143,
|
|
|
|
|
16069, 15986, 15893, 15791,
|
|
|
|
|
15679, 15557, 15426, 15286,
|
|
|
|
|
15137, 14978, 14811, 14635,
|
|
|
|
|
14449, 14256, 14053, 13842,
|
|
|
|
|
13623, 13395, 13160, 12916,
|
|
|
|
|
12665, 12406, 12140, 11866,
|
|
|
|
|
11585, 11297, 11003, 10702,
|
|
|
|
|
10394, 10080, 9760, 9434,
|
|
|
|
|
9102, 8765, 8423, 8076,
|
|
|
|
|
7723, 7366, 7005, 6639,
|
|
|
|
|
6270, 5897, 5520, 5139,
|
|
|
|
|
4756, 4370, 3981, 3590,
|
|
|
|
|
3196, 2801, 2404, 2006,
|
|
|
|
|
1606, 1205, 804, 402,
|
|
|
|
|
0, -401, -803, -1204,
|
|
|
|
|
-1605, -2005, -2403, -2800,
|
|
|
|
|
-3195, -3589, -3980, -4369,
|
|
|
|
|
-4755, -5138, -5519, -5896,
|
|
|
|
|
-6269, -6638, -7004, -7365,
|
|
|
|
|
-7722, -8075, -8422, -8764,
|
|
|
|
|
-9101, -9433, -9759, -10079,
|
|
|
|
|
-10393, -10701, -11002, -11296,
|
|
|
|
|
-11584, -11865, -12139, -12405,
|
|
|
|
|
-12664, -12915, -13159, -13394,
|
|
|
|
|
-13622, -13841, -14052, -14255,
|
|
|
|
|
-14448, -14634, -14810, -14977,
|
|
|
|
|
-15136, -15285, -15425, -15556,
|
|
|
|
|
-15678, -15790, -15892, -15985,
|
|
|
|
|
-16068, -16142, -16206, -16260,
|
|
|
|
|
-16304, -16339, -16363, -16378,
|
|
|
|
|
-16383,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
