ref: 19b480838af1721b833f6cd7575e994a5d55071d
dir: /sys/src/cmd/audio/mp3dec/sf_table.dat/
/* * libmad - MPEG audio decoder library * Copyright (C) 2000-2004 Underbit Technologies, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * $Id: sf_table.dat,v 1.7 2004/01/23 09:41:33 rob Exp $ */ /* * These are the scalefactor values for Layer I and Layer II. * The values are from Table B.1 of ISO/IEC 11172-3. * * There is some error introduced by the 32-bit fixed-point representation; * the amount of error is shown. For 16-bit PCM output, this shouldn't be * too much of a problem. * * Strictly speaking, Table B.1 has only 63 entries (0-62), thus a strict * interpretation of ISO/IEC 11172-3 would suggest that a scalefactor index of * 63 is invalid. However, for better compatibility with current practices, we * add a 64th entry. */ MAD_F(0x20000000), /* 2.000000000000 => 2.000000000000, e 0.000000000000 */ MAD_F(0x1965fea5), /* 1.587401051968 => 1.587401051074, e 0.000000000894 */ MAD_F(0x1428a2fa), /* 1.259921049895 => 1.259921051562, e -0.000000001667 */ MAD_F(0x10000000), /* 1.000000000000 => 1.000000000000, e 0.000000000000 */ MAD_F(0x0cb2ff53), /* 0.793700525984 => 0.793700527400, e -0.000000001416 */ MAD_F(0x0a14517d), /* 0.629960524947 => 0.629960525781, e -0.000000000833 */ MAD_F(0x08000000), /* 0.500000000000 => 0.500000000000, e 0.000000000000 */ MAD_F(0x06597fa9), /* 0.396850262992 => 0.396850261837, e 0.000000001155 */ MAD_F(0x050a28be), /* 0.314980262474 => 0.314980261028, e 0.000000001446 */ MAD_F(0x04000000), /* 0.250000000000 => 0.250000000000, e 0.000000000000 */ MAD_F(0x032cbfd5), /* 0.198425131496 => 0.198425132781, e -0.000000001285 */ MAD_F(0x0285145f), /* 0.157490131237 => 0.157490130514, e 0.000000000723 */ MAD_F(0x02000000), /* 0.125000000000 => 0.125000000000, e 0.000000000000 */ MAD_F(0x01965fea), /* 0.099212565748 => 0.099212564528, e 0.000000001220 */ MAD_F(0x01428a30), /* 0.078745065618 => 0.078745067120, e -0.000000001501 */ MAD_F(0x01000000), /* 0.062500000000 => 0.062500000000, e 0.000000000000 */ MAD_F(0x00cb2ff5), /* 0.049606282874 => 0.049606282264, e 0.000000000610 */ MAD_F(0x00a14518), /* 0.039372532809 => 0.039372533560, e -0.000000000751 */ MAD_F(0x00800000), /* 0.031250000000 => 0.031250000000, e 0.000000000000 */ MAD_F(0x006597fb), /* 0.024803141437 => 0.024803142995, e -0.000000001558 */ MAD_F(0x0050a28c), /* 0.019686266405 => 0.019686266780, e -0.000000000375 */ MAD_F(0x00400000), /* 0.015625000000 => 0.015625000000, e 0.000000000000 */ MAD_F(0x0032cbfd), /* 0.012401570719 => 0.012401569635, e 0.000000001084 */ MAD_F(0x00285146), /* 0.009843133202 => 0.009843133390, e -0.000000000188 */ MAD_F(0x00200000), /* 0.007812500000 => 0.007812500000, e 0.000000000000 */ MAD_F(0x001965ff), /* 0.006200785359 => 0.006200786680, e -0.000000001321 */ MAD_F(0x001428a3), /* 0.004921566601 => 0.004921566695, e -0.000000000094 */ MAD_F(0x00100000), /* 0.003906250000 => 0.003906250000, e 0.000000000000 */ MAD_F(0x000cb2ff), /* 0.003100392680 => 0.003100391477, e 0.000000001202 */ MAD_F(0x000a1451), /* 0.002460783301 => 0.002460781485, e 0.000000001816 */ MAD_F(0x00080000), /* 0.001953125000 => 0.001953125000, e 0.000000000000 */ MAD_F(0x00065980), /* 0.001550196340 => 0.001550197601, e -0.000000001262 */ MAD_F(0x00050a29), /* 0.001230391650 => 0.001230392605, e -0.000000000955 */ MAD_F(0x00040000), /* 0.000976562500 => 0.000976562500, e 0.000000000000 */ MAD_F(0x00032cc0), /* 0.000775098170 => 0.000775098801, e -0.000000000631 */ MAD_F(0x00028514), /* 0.000615195825 => 0.000615194440, e 0.000000001385 */ MAD_F(0x00020000), /* 0.000488281250 => 0.000488281250, e 0.000000000000 */ MAD_F(0x00019660), /* 0.000387549085 => 0.000387549400, e -0.000000000315 */ MAD_F(0x0001428a), /* 0.000307597913 => 0.000307597220, e 0.000000000693 */ MAD_F(0x00010000), /* 0.000244140625 => 0.000244140625, e 0.000000000000 */ MAD_F(0x0000cb30), /* 0.000193774542 => 0.000193774700, e -0.000000000158 */ MAD_F(0x0000a145), /* 0.000153798956 => 0.000153798610, e 0.000000000346 */ MAD_F(0x00008000), /* 0.000122070313 => 0.000122070313, e 0.000000000000 */ MAD_F(0x00006598), /* 0.000096887271 => 0.000096887350, e -0.000000000079 */ MAD_F(0x000050a3), /* 0.000076899478 => 0.000076901168, e -0.000000001689 */ MAD_F(0x00004000), /* 0.000061035156 => 0.000061035156, e 0.000000000000 */ MAD_F(0x000032cc), /* 0.000048443636 => 0.000048443675, e -0.000000000039 */ MAD_F(0x00002851), /* 0.000038449739 => 0.000038448721, e 0.000000001018 */ MAD_F(0x00002000), /* 0.000030517578 => 0.000030517578, e 0.000000000000 */ MAD_F(0x00001966), /* 0.000024221818 => 0.000024221838, e -0.000000000020 */ MAD_F(0x00001429), /* 0.000019224870 => 0.000019226223, e -0.000000001354 */ MAD_F(0x00001000), /* 0.000015258789 => 0.000015258789, e -0.000000000000 */ MAD_F(0x00000cb3), /* 0.000012110909 => 0.000012110919, e -0.000000000010 */ MAD_F(0x00000a14), /* 0.000009612435 => 0.000009611249, e 0.000000001186 */ MAD_F(0x00000800), /* 0.000007629395 => 0.000007629395, e -0.000000000000 */ MAD_F(0x00000659), /* 0.000006055454 => 0.000006053597, e 0.000000001858 */ MAD_F(0x0000050a), /* 0.000004806217 => 0.000004805624, e 0.000000000593 */ MAD_F(0x00000400), /* 0.000003814697 => 0.000003814697, e 0.000000000000 */ MAD_F(0x0000032d), /* 0.000003027727 => 0.000003028661, e -0.000000000934 */ MAD_F(0x00000285), /* 0.000002403109 => 0.000002402812, e 0.000000000296 */ MAD_F(0x00000200), /* 0.000001907349 => 0.000001907349, e -0.000000000000 */ MAD_F(0x00000196), /* 0.000001513864 => 0.000001512468, e 0.000000001396 */ MAD_F(0x00000143), /* 0.000001201554 => 0.000001203269, e -0.000000001714 */ MAD_F(0x00000000) /* this compatibility entry is not part of Table B.1 */