lsp_lookup.h 4.84 KB
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/********************************************************************
 *                                                                  *
 * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE.   *
 *                                                                  *
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 * 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.       *
 *                                                                  *
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 * 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