mpegtable.cc

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/* MPEG/WAVE Sound library

   (C) 1997 by Jung woo-jae */

// Mpegtable.cc
// It has tables for MPEG layer 1, 2 and a part of layer 3

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "mpegsound.h"


#ifndef FIXED_POINT
#define X( x )  (x)
#else
#define X( x )  {FL2FIX( x, FIXED_POINT_FRACBITS )}
#endif



// For header

const int
    Mpegtoraw::frequencies[2][3] = {
    {44100, 48000, 32000},	// MPEG 1
    {22050, 24000, 16000}	// MPEG 2
};

const int
    Mpegtoraw::bitrate[2][3][15] = {
    // MPEG 1
    {{0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448},
     {0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384},
     {0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320}},

    // MPEG 2
    {{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256},
     {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160},
     {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}}
};



// Mpeg general table

const REAL
    Mpegtoraw::scalefactorstable[64] = {
    X(2.00000000000000),
	X(1.58740105196820),
	X(1.25992104989487),
	X(1.00000000000000),
    X(0.79370052598410),
	X(0.62996052494744),
	X(0.50000000000000),
	X(0.39685026299205),
    X(0.31498026247372),
	X(0.25000000000000),
	X(0.19842513149602),
	X(0.15749013123686),
    X(0.12500000000000),
	X(0.09921256574801),
	X(0.07874506561843),
	X(0.06250000000000),
    X(0.04960628287401),
	X(0.03937253280921),
	X(0.03125000000000),
	X(0.02480314143700),
    X(0.01968626640461),
	X(0.01562500000000),
	X(0.01240157071850),
	X(0.00984313320230),
    X(0.00781250000000),
	X(0.00620078535925),
	X(0.00492156660115),
	X(0.00390625000000),
    X(0.00310039267963),
	X(0.00246078330058),
	X(0.00195312500000),
	X(0.00155019633981),
    X(0.00123039165029),
	X(0.00097656250000),
	X(0.00077509816991),
	X(0.00061519582514),
    X(0.00048828125000),
	X(0.00038754908495),
	X(0.00030759791257),
	X(0.00024414062500),
    X(0.00019377454248),
	X(0.00015379895629),
	X(0.00012207031250),
	X(0.00009688727124),
    X(0.00007689947814),
	X(0.00006103515625),
	X(0.00004844363562),
	X(0.00003844973907),
    X(0.00003051757813),
	X(0.00002422181781),
	X(0.00001922486954),
	X(0.00001525878906),
    X(0.00001211090890),
	X(0.00000961243477),
	X(0.00000762939453),
	X(0.00000605545445),
    X(0.00000480621738),
	X(0.00000381469727),
	X(0.00000302772723),
	X(0.00000240310869),
    X(0.00000190734863),
	X(0.00000151386361),
	X(0.00000120155435),
	X(0.00000000000000)
};



const REAL
    Mpegtoraw::filter[512] = {
    X(0.000000000),
	X(-0.000442505),
	X(0.003250122),
	X(-0.007003784),
    X(0.031082153),
	X(-0.078628540),
	X(0.100311279),
	X(-0.572036743),
    X(1.144989014),
	X(0.572036743),
	X(0.100311279),
	X(0.078628540),
    X(0.031082153),
	X(0.007003784),
	X(0.003250122),
	X(0.000442505),
    X(-0.000015259),
	X(-0.000473022),
	X(0.003326416),
	X(-0.007919312),
    X(0.030517578),
	X(-0.084182739),
	X(0.090927124),
	X(-0.600219727),
    X(1.144287109),
	X(0.543823242),
	X(0.108856201),
	X(0.073059082),
    X(0.031478882),
	X(0.006118774),
	X(0.003173828),
	X(0.000396729),
    X(-0.000015259),
	X(-0.000534058),
	X(0.003387451),
	X(-0.008865356),
    X(0.029785156),
	X(-0.089706421),
	X(0.080688477),
	X(-0.628295898),
    X(1.142211914),
	X(0.515609741),
	X(0.116577148),
	X(0.067520142),
    X(0.031738281),
	X(0.005294800),
	X(0.003082275),
	X(0.000366211),
    X(-0.000015259),
	X(-0.000579834),
	X(0.003433228),
	X(-0.009841919),
    X(0.028884888),
	X(-0.095169067),
	X(0.069595337),
	X(-0.656219482),
    X(1.138763428),
	X(0.487472534),
	X(0.123474121),
	X(0.061996460),
    X(0.031845093),
	X(0.004486084),
	X(0.002990723),
	X(0.000320435),
    X(-0.000015259),
	X(-0.000625610),
	X(0.003463745),
	X(-0.010848999),
    X(0.027801514),
	X(-0.100540161),
	X(0.057617188),
	X(-0.683914185),
    X(1.133926392),
	X(0.459472656),
	X(0.129577637),
	X(0.056533813),
    X(0.031814575),
	X(0.003723145),
	X(0.002899170),
	X(0.000289917),
    X(-0.000015259),
	X(-0.000686646),
	X(0.003479004),
	X(-0.011886597),
    X(0.026535034),
	X(-0.105819702),
	X(0.044784546),
	X(-0.711318970),
    X(1.127746582),
	X(0.431655884),
	X(0.134887695),
	X(0.051132202),
    X(0.031661987),
	X(0.003005981),
	X(0.002792358),
	X(0.000259399),
    X(-0.000015259),
	X(-0.000747681),
	X(0.003479004),
	X(-0.012939453),
    X(0.025085449),
	X(-0.110946655),
	X(0.031082153),
	X(-0.738372803),
    X(1.120223999),
	X(0.404083252),
	X(0.139450073),
	X(0.045837402),
    X(0.031387329),
	X(0.002334595),
	X(0.002685547),
	X(0.000244141),
    X(-0.000030518),
	X(-0.000808716),
	X(0.003463745),
	X(-0.014022827),
    X(0.023422241),
	X(-0.115921021),
	X(0.016510010),
	X(-0.765029907),
    X(1.111373901),
	X(0.376800537),
	X(0.143264771),
	X(0.040634155),
    X(0.031005859),
	X(0.001693726),
	X(0.002578735),
	X(0.000213623),
    X(-0.000030518),
	X(-0.000885010),
	X(0.003417969),
	X(-0.015121460),
    X(0.021575928),
	X(-0.120697021),
	X(0.001068115),
	X(-0.791213989),
    X(1.101211548),
	X(0.349868774),
	X(0.146362305),
	X(0.035552979),
    X(0.030532837),
	X(0.001098633),
	X(0.002456665),
	X(0.000198364),
    X(-0.000030518),
	X(-0.000961304),
	X(0.003372192),
	X(-0.016235352),
    X(0.019531250),
	X(-0.125259399),
	X(-0.015228271),
	X(-0.816864014),
    X(1.089782715),
	X(0.323318481),
	X(0.148773193),
	X(0.030609131),
    X(0.029937744),
	X(0.000549316),
	X(0.002349854),
	X(0.000167847),
    X(-0.000030518),
	X(-0.001037598),
	X(0.003280640),
	X(-0.017349243),
    X(0.017257690),
	X(-0.129562378),
	X(-0.032379150),
	X(-0.841949463),
    X(1.077117920),
	X(0.297210693),
	X(0.150497437),
	X(0.025817871),
    X(0.029281616),
	X(0.000030518),
	X(0.002243042),
	X(0.000152588),
    X(-0.000045776),
	X(-0.001113892),
	X(0.003173828),
	X(-0.018463135),
    X(0.014801025),
	X(-0.133590698),
	X(-0.050354004),
	X(-0.866363525),
    X(1.063217163),
	X(0.271591187),
	X(0.151596069),
	X(0.021179199),
    X(0.028533936),
	X(-0.000442505),
	X(0.002120972),
	X(0.000137329),
    X(-0.000045776),
	X(-0.001205444),
	X(0.003051758),
	X(-0.019577026),
    X(0.012115479),
	X(-0.137298584),
	X(-0.069168091),
	X(-0.890090942),
    X(1.048156738),
	X(0.246505737),
	X(0.152069092),
	X(0.016708374),
    X(0.027725220),
	X(-0.000869751),
	X(0.002014160),
	X(0.000122070),
    X(-0.000061035),
	X(-0.001296997),
	X(0.002883911),
	X(-0.020690918),
    X(0.009231567),
	X(-0.140670776),
	X(-0.088775635),
	X(-0.913055420),
    X(1.031936646),
	X(0.221984863),
	X(0.151962280),
	X(0.012420654),
    X(0.026840210),
	X(-0.001266479),
	X(0.001907349),
	X(0.000106812),
    X(-0.000061035),
	X(-0.001388550),
	X(0.002700806),
	X(-0.021789551),
    X(0.006134033),
	X(-0.143676758),
	X(-0.109161377),
	X(-0.935195923),
    X(1.014617920),
	X(0.198059082),
	X(0.151306152),
	X(0.008316040),
    X(0.025909424),
	X(-0.001617432),
	X(0.001785278),
	X(0.000106812),
    X(-0.000076294),
	X(-0.001480103),
	X(0.002487183),
	X(-0.022857666),
    X(0.002822876),
	X(-0.146255493),
	X(-0.130310059),
	X(-0.956481934),
    X(0.996246338),
	X(0.174789429),
	X(0.150115967),
	X(0.004394531),
    X(0.024932861),
	X(-0.001937866),
	X(0.001693726),
	X(0.000091553),
    X(-0.000076294),
	X(-0.001586914),
	X(0.002227783),
	X(-0.023910522),
    X(-0.000686646),
	X(-0.148422241),
	X(-0.152206421),
	X(-0.976852417),
    X(0.976852417),
	X(0.152206421),
	X(0.148422241),
	X(0.000686646),
    X(0.023910522),
	X(-0.002227783),
	X(0.001586914),
	X(0.000076294),
    X(-0.000091553),
	X(-0.001693726),
	X(0.001937866),
	X(-0.024932861),
    X(-0.004394531),
	X(-0.150115967),
	X(-0.174789429),
	X(-0.996246338),
    X(0.956481934),
	X(0.130310059),
	X(0.146255493),
	X(-0.002822876),
    X(0.022857666),
	X(-0.002487183),
	X(0.001480103),
	X(0.000076294),
    X(-0.000106812),
	X(-0.001785278),
	X(0.001617432),
	X(-0.025909424),
    X(-0.008316040),
	X(-0.151306152),
	X(-0.198059082),
	X(-1.014617920),
    X(0.935195923),
	X(0.109161377),
	X(0.143676758),
	X(-0.006134033),
    X(0.021789551),
	X(-0.002700806),
	X(0.001388550),
	X(0.000061035),
    X(-0.000106812),
	X(-0.001907349),
	X(0.001266479),
	X(-0.026840210),
    X(-0.012420654),
	X(-0.151962280),
	X(-0.221984863),
	X(-1.031936646),
    X(0.913055420),
	X(0.088775635),
	X(0.140670776),
	X(-0.009231567),
    X(0.020690918),
	X(-0.002883911),
	X(0.001296997),
	X(0.000061035),
    X(-0.000122070),
	X(-0.002014160),
	X(0.000869751),
	X(-0.027725220),
    X(-0.016708374),
	X(-0.152069092),
	X(-0.246505737),
	X(-1.048156738),
    X(0.890090942),
	X(0.069168091),
	X(0.137298584),
	X(-0.012115479),
    X(0.019577026),
	X(-0.003051758),
	X(0.001205444),
	X(0.000045776),
    X(-0.000137329),
	X(-0.002120972),
	X(0.000442505),
	X(-0.028533936),
    X(-0.021179199),
	X(-0.151596069),
	X(-0.271591187),
	X(-1.063217163),
    X(0.866363525),
	X(0.050354004),
	X(0.133590698),
	X(-0.014801025),
    X(0.018463135),
	X(-0.003173828),
	X(0.001113892),
	X(0.000045776),
    X(-0.000152588),
	X(-0.002243042),
	X(-0.000030518),
	X(-0.029281616),
    X(-0.025817871),
	X(-0.150497437),
	X(-0.297210693),
	X(-1.077117920),
    X(0.841949463),
	X(0.032379150),
	X(0.129562378),
	X(-0.017257690),
    X(0.017349243),
	X(-0.003280640),
	X(0.001037598),
	X(0.000030518),
    X(-0.000167847),
	X(-0.002349854),
	X(-0.000549316),
	X(-0.029937744),
    X(-0.030609131),
	X(-0.148773193),
	X(-0.323318481),
	X(-1.089782715),
    X(0.816864014),
	X(0.015228271),
	X(0.125259399),
	X(-0.019531250),
    X(0.016235352),
	X(-0.003372192),
	X(0.000961304),
	X(0.000030518),
    X(-0.000198364),
	X(-0.002456665),
	X(-0.001098633),
	X(-0.030532837),
    X(-0.035552979),
	X(-0.146362305),
	X(-0.349868774),
	X(-1.101211548),
    X(0.791213989),
	X(-0.001068115),
	X(0.120697021),
	X(-0.021575928),
    X(0.015121460),
	X(-0.003417969),
	X(0.000885010),
	X(0.000030518),
    X(-0.000213623),
	X(-0.002578735),
	X(-0.001693726),
	X(-0.031005859),
    X(-0.040634155),
	X(-0.143264771),
	X(-0.376800537),
	X(-1.111373901),
    X(0.765029907),
	X(-0.016510010),
	X(0.115921021),
	X(-0.023422241),
    X(0.014022827),
	X(-0.003463745),
	X(0.000808716),
	X(0.000030518),
    X(-0.000244141),
	X(-0.002685547),
	X(-0.002334595),
	X(-0.031387329),
    X(-0.045837402),
	X(-0.139450073),
	X(-0.404083252),
	X(-1.120223999),
    X(0.738372803),
	X(-0.031082153),
	X(0.110946655),
	X(-0.025085449),
    X(0.012939453),
	X(-0.003479004),
	X(0.000747681),
	X(0.000015259),
    X(-0.000259399),
	X(-0.002792358),
	X(-0.003005981),
	X(-0.031661987),
    X(-0.051132202),
	X(-0.134887695),
	X(-0.431655884),
	X(-1.127746582),
    X(0.711318970),
	X(-0.044784546),
	X(0.105819702),
	X(-0.026535034),
    X(0.011886597),
	X(-0.003479004),
	X(0.000686646),
	X(0.000015259),
    X(-0.000289917),
	X(-0.002899170),
	X(-0.003723145),
	X(-0.031814575),
    X(-0.056533813),
	X(-0.129577637),
	X(-0.459472656),
	X(-1.133926392),
    X(0.683914185),
	X(-0.057617188),
	X(0.100540161),
	X(-0.027801514),
    X(0.010848999),
	X(-0.003463745),
	X(0.000625610),
	X(0.000015259),
    X(-0.000320435),
	X(-0.002990723),
	X(-0.004486084),
	X(-0.031845093),
    X(-0.061996460),
	X(-0.123474121),
	X(-0.487472534),
	X(-1.138763428),
    X(0.656219482),
	X(-0.069595337),
	X(0.095169067),
	X(-0.028884888),
    X(0.009841919),
	X(-0.003433228),
	X(0.000579834),
	X(0.000015259),
    X(-0.000366211),
	X(-0.003082275),
	X(-0.005294800),
	X(-0.031738281),
    X(-0.067520142),
	X(-0.116577148),
	X(-0.515609741),
	X(-1.142211914),
    X(0.628295898),
	X(-0.080688477),
	X(0.089706421),
	X(-0.029785156),
    X(0.008865356),
	X(-0.003387451),
	X(0.000534058),
	X(0.000015259),
    X(-0.000396729),
	X(-0.003173828),
	X(-0.006118774),
	X(-0.031478882),
    X(-0.073059082),
	X(-0.108856201),
	X(-0.543823242),
	X(-1.144287109),
    X(0.600219727),
	X(-0.090927124),
	X(0.084182739),
	X(-0.030517578),
    X(0.007919312),
	X(-0.003326416),
	X(0.000473022),
	X(0.000015259)
};



/* hcos_64[i] = 1.0 / (2.0*cos(PI*double(i*2+1)/64.0)) */
const REAL
    Mpegtoraw::hcos_64[16] = {
    X(0.500602998235196),
	X(0.505470959897544),
	X(0.515447309922625),
	X(0.531042591089784),
    X(0.553103896034445),
	X(0.582934968206134),
	X(0.622504123035665),
	X(0.674808341455006),
    X(0.744536271002298),
	X(0.839349645415527),
	X(0.972568237861961),
	X(1.169439933432885),
    X(1.484164616314166),
	X(2.057781009953411),
	X(3.407608418468719),
	X(10.190008123548033)
};

/* hcos_32[i] = 1.0 / (2.0*cos(PI*double(i*2+1)/32.0)) */
const REAL
    Mpegtoraw::hcos_32[8] = {
    X(0.502419286188156),
	X(0.522498614939689),
	X(0.566944034816358),
	X(0.646821783359990),
    X(0.788154623451250),
	X(1.060677685990347),
	X(1.722447098238334),
	X(5.101148618689155)
};

/* hcos_16[i] = 1.0 / (2.0*cos(PI*double(i*2+1)/16.0)) */
const REAL
    Mpegtoraw::hcos_16[4] = {
    X(0.509795579104159),
	X(0.601344886935045),
	X(0.899976223136416),
	X(2.562915447741505)
};

/* hcos_8 [i] = 1.0 / (2.0*cos(PI*double(i*2+1)/ 8.0)) */
const REAL
    Mpegtoraw::hcos_8[2] = {
    X(0.541196100146197),
	X(1.306562964876376)
};

/* hcos_4 = 1.0 / (2.0*cos(PI*1.0/4.0)) */
const REAL
    Mpegtoraw::hcos_4 =
    X(0.707106781186547);