tremor/lsp_lookup.h

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