<?php
/**
* SeekQuarry/Yioop --
* Open Source Pure PHP Search Engine, Crawler, and Indexer
*
* Copyright (C) 2009 - 2026 Chris Pollett chris@pollett.org
*
* LICENSE:
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*
* END LICENSE
*
* @author Chris Pollett chris@pollett.org
* @license https://www.gnu.org/licenses/ GPL3
* @link https://www.seekquarry.com/
* @copyright 2009 - 2026
* @filesource
*
* AacCodeTables holds the eleven tables of codes an AAC stream writes
* its values with, and the table its loudness steps are written with.
*/
namespace seekquarry\yioop\library\av_processing;
/**
* AacCodeTables holds the tables of codes an AAC stream is written
* with. A stream does not write a value as a plain number: it writes a
* short code standing for a group of values, so that the values a piece
* of sound uses most often cost the fewest bits.
*
* There are eleven such tables for the values themselves and one for
* the loudness steps. Each row of a table is a code: how many bits it
* takes, the bits themselves, and the values it stands for. A reader
* takes bits until they match a row.
*
* WHERE THESE NUMBERS COME FROM. The tables are the ones fixed by the
* standard the format is written to, and they are the same in every
* encoder and decoder. They were taken from AAC.js by Devon Govett,
* which is published under the Lesser General Public License, a license
* this project's own may take code from. Every table was then checked
* by decoding sound encoded by another program and comparing the
* samples that came back.
*
* @author Chris Pollett
*/
class AacCodeTables
{
/**
* VALUE_CODES_ONE is the first table, which writes four values at a time
* and carries their signs within the code itself.
* @var array
*/
const VALUE_CODES_ONE = [
[1,0,0,0,0,0], [5,16,1,0,0,0], [5,17,-1,0,0,0], [5,18,0,0,0,-1],
[5,19,0,1,0,0], [5,20,0,0,0,1], [5,21,0,0,-1,0], [5,22,0,0,1,0],
[5,23,0,-1,0,0], [7,96,1,-1,0,0], [7,97,-1,1,0,0], [7,98,0,0,-1,1],
[7,99,0,1,-1,0], [7,100,0,-1,1,0], [7,101,0,0,1,-1], [7,102,1,1,0,0],
[7,103,0,0,-1,-1], [7,104,-1,-1,0,0], [7,105,0,-1,-1,0],
[7,106,1,0,-1,0], [7,107,0,1,0,-1], [7,108,-1,0,1,0], [7,109,0,0,1,1],
[7,110,1,0,1,0], [7,111,0,-1,0,1], [7,112,0,1,1,0], [7,113,0,1,0,1],
[7,114,-1,0,-1,0], [7,115,1,0,0,1], [7,116,-1,0,0,-1], [7,117,1,0,0,-1],
[7,118,-1,0,0,1], [7,119,0,-1,0,-1], [9,480,1,1,-1,0],
[9,481,-1,1,-1,0], [9,482,1,-1,1,0], [9,483,0,1,1,-1], [9,484,0,1,-1,1],
[9,485,0,-1,1,1], [9,486,0,-1,1,-1], [9,487,1,-1,-1,0],
[9,488,1,0,-1,1], [9,489,0,1,-1,-1], [9,490,-1,1,1,0],
[9,491,-1,0,1,-1], [9,492,-1,-1,1,0], [9,493,0,-1,-1,1],
[9,494,1,-1,0,1], [9,495,1,-1,0,-1], [9,496,-1,1,0,-1],
[9,497,-1,-1,-1,0], [9,498,0,-1,-1,-1], [9,499,0,1,1,1],
[9,500,1,0,1,-1], [9,501,1,1,0,1], [9,502,-1,1,0,1], [9,503,1,1,1,0],
[10,1008,-1,-1,0,1], [10,1009,-1,0,-1,-1], [10,1010,1,1,0,-1],
[10,1011,1,0,-1,-1], [10,1012,-1,0,-1,1], [10,1013,-1,-1,0,-1],
[10,1014,-1,0,1,1], [10,1015,1,0,1,1], [11,2032,1,-1,1,-1],
[11,2033,-1,1,-1,1], [11,2034,-1,1,1,-1], [11,2035,1,-1,-1,1],
[11,2036,1,1,1,1], [11,2037,-1,-1,1,1], [11,2038,1,1,-1,-1],
[11,2039,-1,-1,1,-1], [11,2040,-1,-1,-1,-1], [11,2041,1,1,-1,1],
[11,2042,1,-1,1,1], [11,2043,-1,1,1,1], [11,2044,-1,1,-1,-1],
[11,2045,-1,-1,-1,1], [11,2046,1,-1,-1,-1], [11,2047,1,1,1,-1]
];
/**
* VALUE_CODES_TWO writes four values at a time as the first table does,
* with codes suited to sound whose values sit closer together.
* @var array
*/
const VALUE_CODES_TWO = [
[3,0,0,0,0,0], [4,2,1,0,0,0], [5,6,-1,0,0,0], [5,7,0,0,0,1],
[5,8,0,0,-1,0], [5,9,0,0,0,-1], [5,10,0,-1,0,0], [5,11,0,0,1,0],
[5,12,0,1,0,0], [6,26,0,-1,1,0], [6,27,-1,1,0,0], [6,28,0,1,-1,0],
[6,29,0,0,1,-1], [6,30,0,1,0,-1], [6,31,0,0,-1,1], [6,32,-1,0,0,-1],
[6,33,1,-1,0,0], [6,34,1,0,-1,0], [6,35,-1,-1,0,0], [6,36,0,0,-1,-1],
[6,37,1,0,1,0], [6,38,1,0,0,1], [6,39,0,-1,0,1], [6,40,-1,0,1,0],
[6,41,0,1,0,1], [6,42,0,-1,-1,0], [6,43,-1,0,0,1], [6,44,0,-1,0,-1],
[6,45,-1,0,-1,0], [6,46,1,1,0,0], [6,47,0,1,1,0], [6,48,0,0,1,1],
[6,49,1,0,0,-1], [7,100,0,1,-1,1], [7,101,1,0,-1,1], [7,102,-1,1,-1,0],
[7,103,0,-1,1,-1], [7,104,1,-1,1,0], [7,105,1,1,0,-1], [7,106,1,0,1,1],
[7,107,-1,1,1,0], [7,108,0,-1,-1,1], [7,109,1,1,1,0], [7,110,-1,0,1,-1],
[7,111,-1,-1,-1,0], [7,112,-1,0,-1,1], [7,113,1,-1,-1,0],
[7,114,1,1,-1,0], [8,230,1,-1,0,1], [8,231,-1,1,0,-1],
[8,232,-1,-1,1,0], [8,233,-1,0,1,1], [8,234,-1,-1,0,1],
[8,235,-1,-1,0,-1], [8,236,0,-1,-1,-1], [8,237,1,0,1,-1],
[8,238,1,0,-1,-1], [8,239,0,1,-1,-1], [8,240,0,1,1,1], [8,241,-1,1,0,1],
[8,242,-1,0,-1,-1], [8,243,0,1,1,-1], [8,244,1,-1,0,-1],
[8,245,0,-1,1,1], [8,246,1,1,0,1], [8,247,1,-1,1,-1], [8,248,-1,1,-1,1],
[9,498,1,-1,-1,1], [9,499,-1,-1,-1,-1], [9,500,-1,1,1,-1],
[9,501,-1,1,1,1], [9,502,1,1,1,1], [9,503,-1,-1,1,-1], [9,504,1,-1,1,1],
[9,505,-1,1,-1,-1], [9,506,-1,-1,1,1], [9,507,1,1,-1,-1],
[9,508,1,-1,-1,-1], [9,509,-1,-1,-1,1], [9,510,1,1,-1,1],
[9,511,1,1,1,-1]
];
/**
* VALUE_CODES_THREE writes four values at a time without their signs,
* which follow each value that is not zero.
* @var array
*/
const VALUE_CODES_THREE = [
[1,0,0,0,0,0], [4,8,1,0,0,0], [4,9,0,0,0,1], [4,10,0,1,0,0],
[4,11,0,0,1,0], [5,24,1,1,0,0], [5,25,0,0,1,1], [6,52,0,1,1,0],
[6,53,0,1,0,1], [6,54,1,0,1,0], [6,55,0,1,1,1], [6,56,1,0,0,1],
[6,57,1,1,1,0], [7,116,1,1,1,1], [7,117,1,0,1,1], [7,118,1,1,0,1],
[8,238,2,0,0,0], [8,239,0,0,0,2], [8,240,0,0,1,2], [8,241,2,1,0,0],
[8,242,1,2,1,0], [9,486,0,0,2,1], [9,487,0,1,2,1], [9,488,1,2,0,0],
[9,489,0,1,1,2], [9,490,2,1,1,0], [9,491,0,0,2,0], [9,492,0,2,1,0],
[9,493,0,1,2,0], [9,494,0,2,0,0], [9,495,0,1,0,2], [9,496,2,0,1,0],
[9,497,1,2,1,1], [9,498,0,2,1,1], [9,499,1,1,2,0], [9,500,1,1,2,1],
[10,1002,1,2,0,1], [10,1003,1,0,2,0], [10,1004,1,0,2,1],
[10,1005,0,2,0,1], [10,1006,2,1,1,1], [10,1007,1,1,1,2],
[10,1008,2,1,0,1], [10,1009,1,0,1,2], [10,1010,0,0,2,2],
[10,1011,0,1,2,2], [10,1012,2,2,1,0], [10,1013,1,2,2,0],
[10,1014,1,0,0,2], [10,1015,2,0,0,1], [10,1016,0,2,2,1],
[11,2034,2,2,0,0], [11,2035,1,2,2,1], [11,2036,1,1,0,2],
[11,2037,2,0,1,1], [11,2038,1,1,2,2], [11,2039,2,2,1,1],
[11,2040,0,2,2,0], [11,2041,0,2,1,2], [12,4084,1,0,2,2],
[12,4085,2,2,0,1], [12,4086,2,1,2,0], [12,4087,2,2,2,0],
[12,4088,0,2,2,2], [12,4089,2,2,2,1], [12,4090,2,1,2,1],
[12,4091,1,2,1,2], [12,4092,1,2,2,2], [13,8186,0,2,0,2],
[13,8187,2,0,2,0], [13,8188,1,2,0,2], [14,16378,2,0,2,1],
[14,16379,2,1,1,2], [14,16380,2,1,0,2], [15,32762,2,2,2,2],
[15,32763,2,2,1,2], [15,32764,2,1,2,2], [15,32765,2,0,1,2],
[15,32766,2,0,0,2], [16,65534,2,2,0,2], [16,65535,2,0,2,2]
];
/**
* VALUE_CODES_FOUR writes four values at a time without their signs,
* with codes suited to louder sound.
* @var array
*/
const VALUE_CODES_FOUR = [
[4,0,1,1,1,1], [4,1,0,1,1,1], [4,2,1,1,0,1], [4,3,1,1,1,0],
[4,4,1,0,1,1], [4,5,1,0,0,0], [4,6,1,1,0,0], [4,7,0,0,0,0],
[4,8,0,0,1,1], [4,9,1,0,1,0], [5,20,1,0,0,1], [5,21,0,1,1,0],
[5,22,0,0,0,1], [5,23,0,1,0,1], [5,24,0,0,1,0], [5,25,0,1,0,0],
[7,104,2,1,1,1], [7,105,1,1,2,1], [7,106,1,2,1,1], [7,107,1,1,1,2],
[7,108,2,1,1,0], [7,109,2,1,0,1], [7,110,1,2,1,0], [7,111,2,0,1,1],
[7,112,0,1,2,1], [8,226,0,1,1,2], [8,227,1,1,2,0], [8,228,0,2,1,1],
[8,229,1,0,1,2], [8,230,1,2,0,1], [8,231,1,1,0,2], [8,232,1,0,2,1],
[8,233,2,1,0,0], [8,234,2,0,1,0], [8,235,1,2,0,0], [8,236,2,0,0,1],
[8,237,0,1,0,2], [8,238,0,2,1,0], [8,239,0,0,1,2], [8,240,0,1,2,0],
[8,241,0,2,0,1], [8,242,1,0,0,2], [8,243,0,0,2,1], [8,244,1,0,2,0],
[8,245,2,0,0,0], [8,246,0,0,0,2], [9,494,0,2,0,0], [9,495,0,0,2,0],
[9,496,1,2,2,1], [9,497,2,2,1,1], [9,498,2,1,2,1], [9,499,1,1,2,2],
[9,500,1,2,1,2], [9,501,2,1,1,2], [10,1004,1,2,2,0], [10,1005,2,2,1,0],
[10,1006,2,1,2,0], [10,1007,0,2,2,1], [10,1008,0,1,2,2],
[10,1009,2,2,0,1], [10,1010,0,2,1,2], [10,1011,2,0,2,1],
[10,1012,1,0,2,2], [10,1013,2,2,2,1], [10,1014,1,2,0,2],
[10,1015,2,0,1,2], [10,1016,2,1,0,2], [10,1017,1,2,2,2],
[11,2036,2,1,2,2], [11,2037,2,2,1,2], [11,2038,0,2,2,0],
[11,2039,2,2,0,0], [11,2040,0,0,2,2], [11,2041,2,0,2,0],
[11,2042,0,2,0,2], [11,2043,2,0,0,2], [11,2044,2,2,2,2],
[11,2045,0,2,2,2], [11,2046,2,2,2,0], [12,4094,2,2,0,2],
[12,4095,2,0,2,2]
];
/**
* VALUE_CODES_FIVE writes a pair of values at a time and carries their
* signs within the code.
* @var array
*/
const VALUE_CODES_FIVE = [
[1,0,0,0], [4,8,-1,0], [4,9,1,0], [4,10,0,1], [4,11,0,-1], [5,24,1,-1],
[5,25,-1,1], [5,26,-1,-1], [5,27,1,1], [7,112,-2,0], [7,113,0,2],
[7,114,2,0], [7,115,0,-2], [8,232,-2,-1], [8,233,2,1], [8,234,-1,-2],
[8,235,1,2], [8,236,-2,1], [8,237,2,-1], [8,238,-1,2], [8,239,1,-2],
[8,240,-3,0], [8,241,3,0], [8,242,0,-3], [8,243,0,3], [9,488,-3,-1],
[9,489,1,3], [9,490,3,1], [9,491,-1,-3], [9,492,-3,1], [9,493,3,-1],
[9,494,1,-3], [9,495,-1,3], [9,496,-2,2], [9,497,2,2], [9,498,-2,-2],
[9,499,2,-2], [10,1000,-3,-2], [10,1001,3,-2], [10,1002,-2,3],
[10,1003,2,-3], [10,1004,3,2], [10,1005,2,3], [10,1006,-3,2],
[10,1007,-2,-3], [10,1008,0,-4], [10,1009,-4,0], [10,1010,4,1],
[10,1011,4,0], [11,2024,-4,-1], [11,2025,0,4], [11,2026,4,-1],
[11,2027,-1,-4], [11,2028,1,4], [11,2029,-1,4], [11,2030,-4,1],
[11,2031,1,-4], [11,2032,3,-3], [11,2033,-3,-3], [11,2034,-3,3],
[11,2035,-2,4], [11,2036,-4,-2], [11,2037,4,2], [11,2038,2,-4],
[11,2039,2,4], [11,2040,3,3], [11,2041,-4,2], [12,4084,-2,-4],
[12,4085,4,-2], [12,4086,3,-4], [12,4087,-4,-3], [12,4088,-4,3],
[12,4089,3,4], [12,4090,-3,4], [12,4091,4,3], [12,4092,4,-3],
[12,4093,-3,-4], [13,8188,4,-4], [13,8189,-4,4], [13,8190,4,4],
[13,8191,-4,-4]
];
/**
* VALUE_CODES_SIX writes a pair at a time as the fifth table does, with
* codes suited to values further apart.
* @var array
*/
const VALUE_CODES_SIX = [
[4,0,0,0], [4,1,1,0], [4,2,0,-1], [4,3,0,1], [4,4,-1,0], [4,5,1,1],
[4,6,-1,1], [4,7,1,-1], [4,8,-1,-1], [6,36,2,-1], [6,37,2,1],
[6,38,-2,1], [6,39,-2,-1], [6,40,-2,0], [6,41,-1,2], [6,42,2,0],
[6,43,1,-2], [6,44,1,2], [6,45,0,-2], [6,46,-1,-2], [6,47,0,2],
[6,48,2,-2], [6,49,-2,2], [6,50,-2,-2], [6,51,2,2], [7,104,-3,1],
[7,105,3,1], [7,106,3,-1], [7,107,-1,3], [7,108,-3,-1], [7,109,1,3],
[7,110,1,-3], [7,111,-1,-3], [7,112,3,0], [7,113,-3,0], [7,114,0,-3],
[7,115,0,3], [7,116,3,2], [8,234,-3,-2], [8,235,-2,3], [8,236,2,3],
[8,237,3,-2], [8,238,2,-3], [8,239,-2,-3], [8,240,-3,2], [8,241,3,3],
[9,484,3,-3], [9,485,-3,-3], [9,486,-3,3], [9,487,1,-4], [9,488,-1,-4],
[9,489,4,1], [9,490,-4,1], [9,491,-4,-1], [9,492,1,4], [9,493,4,-1],
[9,494,-1,4], [9,495,0,-4], [9,496,-4,2], [9,497,-4,-2], [9,498,2,4],
[9,499,-2,-4], [9,500,-4,0], [9,501,4,2], [9,502,4,-2], [9,503,-2,4],
[9,504,4,0], [9,505,2,-4], [9,506,0,4], [10,1014,-3,-4], [10,1015,-3,4],
[10,1016,3,-4], [10,1017,4,-3], [10,1018,3,4], [10,1019,4,3],
[10,1020,-4,3], [10,1021,-4,-3], [11,2044,4,4], [11,2045,-4,4],
[11,2046,-4,-4], [11,2047,4,-4]
];
/**
* VALUE_CODES_SEVEN writes a pair at a time without signs, which follow
* each value that is not zero.
* @var array
*/
const VALUE_CODES_SEVEN = [
[1,0,0,0], [3,4,1,0], [3,5,0,1], [4,12,1,1], [6,52,2,1], [6,53,1,2],
[6,54,2,0], [6,55,0,2], [7,112,3,1], [7,113,1,3], [7,114,2,2],
[7,115,3,0], [7,116,0,3], [8,234,2,3], [8,235,3,2], [8,236,1,4],
[8,237,4,1], [8,238,1,5], [8,239,5,1], [8,240,3,3], [8,241,2,4],
[8,242,0,4], [8,243,4,0], [9,488,4,2], [9,489,2,5], [9,490,5,2],
[9,491,0,5], [9,492,6,1], [9,493,5,0], [9,494,1,6], [9,495,4,3],
[9,496,3,5], [9,497,3,4], [9,498,5,3], [9,499,2,6], [9,500,6,2],
[9,501,1,7], [10,1004,3,6], [10,1005,0,6], [10,1006,6,0], [10,1007,4,4],
[10,1008,7,1], [10,1009,4,5], [10,1010,7,2], [10,1011,5,4],
[10,1012,6,3], [10,1013,2,7], [10,1014,7,3], [10,1015,6,4],
[10,1016,5,5], [10,1017,4,6], [10,1018,3,7], [11,2038,7,0],
[11,2039,0,7], [11,2040,6,5], [11,2041,5,6], [11,2042,7,4],
[11,2043,4,7], [11,2044,5,7], [11,2045,7,5], [12,4092,7,6],
[12,4093,6,6], [12,4094,6,7], [12,4095,7,7]
];
/**
* VALUE_CODES_EIGHT writes a pair at a time without signs, with codes
* suited to louder sound.
* @var array
*/
const VALUE_CODES_EIGHT = [
[3,0,1,1], [4,2,2,1], [4,3,1,0], [4,4,1,2], [4,5,0,1], [4,6,2,2],
[5,14,0,0], [5,15,2,0], [5,16,0,2], [5,17,3,1], [5,18,1,3], [5,19,3,2],
[5,20,2,3], [6,42,3,3], [6,43,4,1], [6,44,1,4], [6,45,4,2], [6,46,2,4],
[6,47,3,0], [6,48,0,3], [6,49,4,3], [6,50,3,4], [6,51,5,2], [7,104,5,1],
[7,105,2,5], [7,106,1,5], [7,107,5,3], [7,108,3,5], [7,109,4,4],
[7,110,5,4], [7,111,0,4], [7,112,4,5], [7,113,4,0], [7,114,2,6],
[7,115,6,2], [7,116,6,1], [7,117,1,6], [8,236,3,6], [8,237,6,3],
[8,238,5,5], [8,239,5,0], [8,240,6,4], [8,241,0,5], [8,242,4,6],
[8,243,7,1], [8,244,7,2], [8,245,2,7], [8,246,6,5], [8,247,7,3],
[8,248,1,7], [8,249,5,6], [8,250,3,7], [9,502,6,6], [9,503,7,4],
[9,504,6,0], [9,505,4,7], [9,506,0,6], [9,507,7,5], [9,508,7,6],
[9,509,6,7], [10,1020,5,7], [10,1021,7,0], [10,1022,0,7], [10,1023,7,7]
];
/**
* VALUE_CODES_NINE writes a pair at a time and reaches larger values
* than the eighth table does.
* @var array
*/
const VALUE_CODES_NINE = [
[1,0,0,0], [3,4,1,0], [3,5,0,1], [4,12,1,1], [6,52,2,1], [6,53,1,2],
[6,54,2,0], [6,55,0,2], [7,112,3,1], [7,113,2,2], [7,114,1,3],
[8,230,3,0], [8,231,0,3], [8,232,2,3], [8,233,3,2], [8,234,1,4],
[8,235,4,1], [8,236,2,4], [8,237,1,5], [9,476,4,2], [9,477,3,3],
[9,478,0,4], [9,479,4,0], [9,480,5,1], [9,481,2,5], [9,482,1,6],
[9,483,3,4], [9,484,5,2], [9,485,6,1], [9,486,4,3], [10,974,0,5],
[10,975,2,6], [10,976,5,0], [10,977,1,7], [10,978,3,5], [10,979,1,8],
[10,980,8,1], [10,981,4,4], [10,982,5,3], [10,983,6,2], [10,984,7,1],
[10,985,0,6], [10,986,8,2], [10,987,2,8], [10,988,3,6], [10,989,2,7],
[10,990,4,5], [10,991,9,1], [10,992,1,9], [10,993,7,2], [11,1988,6,0],
[11,1989,5,4], [11,1990,6,3], [11,1991,8,3], [11,1992,0,7],
[11,1993,9,2], [11,1994,3,8], [11,1995,4,6], [11,1996,3,7],
[11,1997,0,8], [11,1998,10,1], [11,1999,6,4], [11,2000,2,9],
[11,2001,5,5], [11,2002,8,0], [11,2003,7,0], [11,2004,7,3],
[11,2005,10,2], [11,2006,9,3], [11,2007,8,4], [11,2008,1,10],
[11,2009,7,4], [11,2010,6,5], [11,2011,5,6], [11,2012,4,8],
[11,2013,4,7], [11,2014,3,9], [11,2015,11,1], [11,2016,5,8],
[11,2017,9,0], [11,2018,8,5], [12,4038,10,3], [12,4039,2,10],
[12,4040,0,9], [12,4041,11,2], [12,4042,9,4], [12,4043,6,6],
[12,4044,12,1], [12,4045,4,9], [12,4046,8,6], [12,4047,1,11],
[12,4048,9,5], [12,4049,10,4], [12,4050,5,7], [12,4051,7,5],
[12,4052,2,11], [12,4053,1,12], [12,4054,12,2], [12,4055,11,3],
[12,4056,3,10], [12,4057,5,9], [12,4058,6,7], [12,4059,8,7],
[12,4060,11,4], [12,4061,0,10], [12,4062,7,6], [12,4063,12,3],
[12,4064,10,0], [12,4065,10,5], [12,4066,4,10], [12,4067,6,8],
[12,4068,2,12], [12,4069,9,6], [12,4070,9,7], [12,4071,4,11],
[12,4072,11,0], [12,4073,6,9], [12,4074,3,11], [12,4075,5,10],
[13,8152,8,8], [13,8153,7,8], [13,8154,12,5], [13,8155,3,12],
[13,8156,11,5], [13,8157,7,7], [13,8158,12,4], [13,8159,11,6],
[13,8160,10,6], [13,8161,4,12], [13,8162,7,9], [13,8163,5,11],
[13,8164,0,11], [13,8165,12,6], [13,8166,6,10], [13,8167,12,0],
[13,8168,10,7], [13,8169,5,12], [13,8170,7,10], [13,8171,9,8],
[13,8172,0,12], [13,8173,11,7], [13,8174,8,9], [13,8175,9,9],
[13,8176,10,8], [13,8177,7,11], [13,8178,12,7], [13,8179,6,11],
[13,8180,8,11], [13,8181,11,8], [13,8182,7,12], [13,8183,6,12],
[14,16368,8,10], [14,16369,10,9], [14,16370,8,12], [14,16371,9,10],
[14,16372,9,11], [14,16373,9,12], [14,16374,10,11], [14,16375,12,9],
[14,16376,10,10], [14,16377,11,9], [14,16378,12,8], [14,16379,11,10],
[14,16380,12,10], [14,16381,12,11], [15,32764,10,12], [15,32765,11,11],
[15,32766,11,12], [15,32767,12,12]
];
/**
* VALUE_CODES_TEN writes a pair at a time and reaches larger values
* still.
* @var array
*/
const VALUE_CODES_TEN = [
[4,0,1,1], [4,1,1,2], [4,2,2,1], [5,6,2,2], [5,7,1,0], [5,8,0,1],
[5,9,1,3], [5,10,3,2], [5,11,3,1], [5,12,2,3], [5,13,3,3], [6,28,2,0],
[6,29,0,2], [6,30,2,4], [6,31,4,2], [6,32,1,4], [6,33,4,1], [6,34,0,0],
[6,35,4,3], [6,36,3,4], [6,37,3,0], [6,38,0,3], [6,39,4,4], [6,40,2,5],
[6,41,5,2], [7,84,1,5], [7,85,5,1], [7,86,5,3], [7,87,3,5], [7,88,5,4],
[7,89,4,5], [7,90,6,2], [7,91,2,6], [7,92,6,3], [7,93,4,0], [7,94,6,1],
[7,95,0,4], [7,96,1,6], [7,97,3,6], [7,98,5,5], [7,99,6,4], [7,100,4,6],
[8,202,6,5], [8,203,7,2], [8,204,3,7], [8,205,2,7], [8,206,5,6],
[8,207,8,2], [8,208,7,3], [8,209,5,0], [8,210,7,1], [8,211,0,5],
[8,212,8,1], [8,213,1,7], [8,214,8,3], [8,215,7,4], [8,216,4,7],
[8,217,2,8], [8,218,6,6], [8,219,7,5], [8,220,1,8], [8,221,3,8],
[8,222,8,4], [8,223,4,8], [8,224,5,7], [8,225,8,5], [8,226,5,8],
[9,454,7,6], [9,455,6,7], [9,456,9,2], [9,457,6,0], [9,458,6,8],
[9,459,9,3], [9,460,3,9], [9,461,9,1], [9,462,2,9], [9,463,0,6],
[9,464,8,6], [9,465,9,4], [9,466,4,9], [9,467,10,2], [9,468,1,9],
[9,469,7,7], [9,470,8,7], [9,471,9,5], [9,472,7,8], [9,473,10,3],
[9,474,5,9], [9,475,10,4], [9,476,2,10], [9,477,10,1], [9,478,3,10],
[9,479,9,6], [9,480,6,9], [9,481,8,0], [9,482,4,10], [9,483,7,0],
[9,484,11,2], [10,970,7,9], [10,971,11,3], [10,972,10,6], [10,973,1,10],
[10,974,11,1], [10,975,9,7], [10,976,0,7], [10,977,8,8], [10,978,10,5],
[10,979,3,11], [10,980,5,10], [10,981,8,9], [10,982,11,5], [10,983,0,8],
[10,984,11,4], [10,985,2,11], [10,986,7,10], [10,987,6,10],
[10,988,10,7], [10,989,4,11], [10,990,1,11], [10,991,12,2],
[10,992,9,8], [10,993,12,3], [10,994,11,6], [10,995,5,11],
[10,996,12,4], [10,997,11,7], [10,998,12,5], [10,999,3,12],
[10,1000,6,11], [10,1001,9,0], [10,1002,10,8], [10,1003,10,0],
[10,1004,12,1], [10,1005,0,9], [10,1006,4,12], [10,1007,9,9],
[10,1008,12,6], [10,1009,2,12], [10,1010,8,10], [11,2022,9,10],
[11,2023,1,12], [11,2024,11,8], [11,2025,12,7], [11,2026,7,11],
[11,2027,5,12], [11,2028,6,12], [11,2029,10,9], [11,2030,8,11],
[11,2031,12,8], [11,2032,0,10], [11,2033,7,12], [11,2034,11,0],
[11,2035,10,10], [11,2036,11,9], [11,2037,11,10], [11,2038,0,11],
[11,2039,11,11], [11,2040,9,11], [11,2041,10,11], [11,2042,12,0],
[11,2043,8,12], [12,4088,12,9], [12,4089,10,12], [12,4090,9,12],
[12,4091,11,12], [12,4092,12,11], [12,4093,0,12], [12,4094,12,10],
[12,4095,12,12]
];
/**
* VALUE_CODES_ELEVEN writes a pair at a time and reaches any value at
* all: a value too large for the table is written as the largest the
* table holds, and the rest of it follows separately.
* @var array
*/
const VALUE_CODES_ELEVEN = [
[4,0,0,0], [4,1,1,1], [5,4,16,16], [5,5,1,0], [5,6,0,1], [5,7,2,1],
[5,8,1,2], [5,9,2,2], [6,20,1,3], [6,21,3,1], [6,22,3,2], [6,23,2,0],
[6,24,2,3], [6,25,0,2], [6,26,3,3], [7,54,4,1], [7,55,1,4], [7,56,4,2],
[7,57,2,4], [7,58,4,3], [7,59,3,4], [7,60,3,0], [7,61,0,3], [7,62,5,1],
[7,63,5,2], [7,64,2,5], [7,65,4,4], [7,66,1,5], [7,67,5,3], [7,68,3,5],
[7,69,5,4], [8,140,4,5], [8,141,6,2], [8,142,2,6], [8,143,6,1],
[8,144,6,3], [8,145,3,6], [8,146,1,6], [8,147,4,16], [8,148,3,16],
[8,149,16,5], [8,150,16,3], [8,151,16,4], [8,152,6,4], [8,153,16,6],
[8,154,4,0], [8,155,4,6], [8,156,0,4], [8,157,2,16], [8,158,5,5],
[8,159,5,16], [8,160,16,7], [8,161,16,2], [8,162,16,8], [8,163,2,7],
[8,164,7,2], [8,165,3,7], [8,166,6,5], [8,167,5,6], [8,168,6,16],
[8,169,16,10], [8,170,7,3], [8,171,7,1], [8,172,16,9], [8,173,7,16],
[8,174,1,16], [8,175,1,7], [8,176,4,7], [8,177,16,11], [8,178,7,4],
[8,179,16,12], [8,180,8,16], [8,181,16,1], [8,182,6,6], [8,183,9,16],
[8,184,2,8], [8,185,5,7], [8,186,10,16], [8,187,16,13], [8,188,8,3],
[8,189,8,2], [8,190,3,8], [8,191,5,0], [8,192,16,14], [8,193,11,16],
[8,194,7,5], [8,195,4,8], [8,196,6,7], [8,197,7,6], [8,198,0,5],
[9,398,8,4], [9,399,16,15], [9,400,12,16], [9,401,1,8], [9,402,8,1],
[9,403,14,16], [9,404,5,8], [9,405,13,16], [9,406,3,9], [9,407,8,5],
[9,408,7,7], [9,409,2,9], [9,410,8,6], [9,411,9,2], [9,412,9,3],
[9,413,15,16], [9,414,4,9], [9,415,6,8], [9,416,6,0], [9,417,9,4],
[9,418,5,9], [9,419,8,7], [9,420,7,8], [9,421,1,9], [9,422,10,3],
[9,423,0,6], [9,424,10,2], [9,425,9,1], [9,426,9,5], [9,427,4,10],
[9,428,2,10], [9,429,9,6], [9,430,3,10], [9,431,6,9], [9,432,10,4],
[9,433,8,8], [9,434,10,5], [9,435,9,7], [9,436,11,3], [9,437,1,10],
[9,438,7,0], [9,439,10,6], [9,440,7,9], [9,441,3,11], [9,442,5,10],
[9,443,10,1], [9,444,4,11], [9,445,11,2], [9,446,13,2], [9,447,6,10],
[9,448,13,3], [9,449,2,11], [9,450,16,0], [9,451,5,11], [9,452,11,5],
[10,906,11,4], [10,907,9,8], [10,908,7,10], [10,909,8,9], [10,910,0,16],
[10,911,4,13], [10,912,0,7], [10,913,3,13], [10,914,11,6],
[10,915,13,1], [10,916,13,4], [10,917,12,3], [10,918,2,13],
[10,919,13,5], [10,920,8,10], [10,921,6,11], [10,922,10,8],
[10,923,10,7], [10,924,14,2], [10,925,12,4], [10,926,1,11],
[10,927,4,12], [10,928,11,1], [10,929,3,12], [10,930,1,13],
[10,931,12,2], [10,932,7,11], [10,933,3,14], [10,934,5,12],
[10,935,5,13], [10,936,14,4], [10,937,4,14], [10,938,11,7],
[10,939,14,3], [10,940,12,5], [10,941,13,6], [10,942,12,6],
[10,943,8,0], [10,944,11,8], [10,945,2,12], [10,946,9,9], [10,947,14,5],
[10,948,6,13], [10,949,10,10], [10,950,15,2], [10,951,8,11],
[10,952,9,10], [10,953,14,6], [10,954,10,9], [10,955,5,14],
[10,956,11,9], [10,957,14,1], [10,958,2,14], [10,959,6,12],
[10,960,1,12], [10,961,13,8], [10,962,0,8], [10,963,13,7],
[10,964,7,12], [10,965,12,7], [10,966,7,13], [10,967,15,3],
[10,968,12,1], [10,969,6,14], [10,970,2,15], [10,971,15,5],
[10,972,15,4], [10,973,1,14], [10,974,9,11], [10,975,4,15],
[10,976,14,7], [10,977,8,13], [10,978,13,9], [10,979,8,12],
[10,980,5,15], [10,981,3,15], [10,982,10,11], [10,983,11,10],
[10,984,12,8], [10,985,15,6], [10,986,15,7], [10,987,8,14],
[10,988,15,1], [10,989,7,14], [10,990,9,0], [10,991,0,9], [10,992,9,13],
[10,993,9,12], [10,994,12,9], [10,995,14,8], [10,996,10,13],
[10,997,14,9], [10,998,12,10], [10,999,6,15], [10,1000,7,15],
[11,2002,9,14], [11,2003,15,8], [11,2004,11,11], [11,2005,11,14],
[11,2006,1,15], [11,2007,10,12], [11,2008,10,14], [11,2009,13,11],
[11,2010,13,10], [11,2011,11,13], [11,2012,11,12], [11,2013,8,15],
[11,2014,14,11], [11,2015,13,12], [11,2016,12,13], [11,2017,15,9],
[11,2018,14,10], [11,2019,10,0], [11,2020,12,11], [11,2021,9,15],
[11,2022,0,10], [11,2023,12,12], [11,2024,11,0], [11,2025,12,14],
[11,2026,10,15], [11,2027,13,13], [11,2028,0,13], [11,2029,14,12],
[11,2030,15,10], [11,2031,15,11], [11,2032,11,15], [11,2033,14,13],
[11,2034,13,0], [11,2035,0,11], [11,2036,13,14], [11,2037,15,12],
[11,2038,15,13], [11,2039,12,15], [11,2040,14,0], [11,2041,14,14],
[11,2042,13,15], [11,2043,12,0], [11,2044,14,15], [12,4090,0,14],
[12,4091,0,12], [12,4092,15,14], [12,4093,15,0], [12,4094,0,15],
[12,4095,15,15]
];
/**
* STEP_CODES is the table the loudness steps are written with. A step is
* written as how far it sits from the step before it, and this table's
* codes stand for those distances.
* @var array
*/
const STEP_CODES = [
[1,0,60], [3,4,59], [4,10,61], [4,11,58], [4,12,62], [5,26,57],
[5,27,63], [6,56,56], [6,57,64], [6,58,55], [6,59,65], [7,120,66],
[7,121,54], [7,122,67], [8,246,53], [8,247,68], [8,248,52], [8,249,69],
[8,250,51], [9,502,70], [9,503,50], [9,504,49], [9,505,71],
[10,1012,72], [10,1013,48], [10,1014,73], [10,1015,47], [10,1016,74],
[10,1017,46], [11,2036,76], [11,2037,75], [11,2038,77], [11,2039,78],
[11,2040,45], [11,2041,43], [12,4084,44], [12,4085,79], [12,4086,42],
[12,4087,41], [12,4088,80], [12,4089,40], [13,8180,81], [13,8181,39],
[13,8182,82], [13,8183,38], [13,8184,83], [14,16370,37], [14,16371,35],
[14,16372,85], [14,16373,33], [14,16374,36], [14,16375,34],
[14,16376,84], [14,16377,32], [15,32756,87], [15,32757,89],
[15,32758,30], [15,32759,31], [16,65520,86], [16,65521,29],
[16,65522,26], [16,65523,27], [16,65524,28], [16,65525,24],
[16,65526,88], [17,131054,25], [17,131055,22], [17,131056,23],
[18,262114,90], [18,262115,21], [18,262116,19], [18,262117,3],
[18,262118,1], [18,262119,2], [18,262120,0], [19,524242,98],
[19,524243,99], [19,524244,100], [19,524245,101], [19,524246,102],
[19,524247,117], [19,524248,97], [19,524249,91], [19,524250,92],
[19,524251,93], [19,524252,94], [19,524253,95], [19,524254,96],
[19,524255,104], [19,524256,111], [19,524257,112], [19,524258,113],
[19,524259,114], [19,524260,115], [19,524261,116], [19,524262,110],
[19,524263,105], [19,524264,106], [19,524265,107], [19,524266,108],
[19,524267,109], [19,524268,118], [19,524269,6], [19,524270,8],
[19,524271,9], [19,524272,10], [19,524273,5], [19,524274,103],
[19,524275,120], [19,524276,119], [19,524277,4], [19,524278,7],
[19,524279,15], [19,524280,16], [19,524281,18], [19,524282,20],
[19,524283,17], [19,524284,11], [19,524285,12], [19,524286,14],
[19,524287,13]
];
}
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