255 lines
11 KiB
C++
255 lines
11 KiB
C++
/*************************************************************************/
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/* cp_tables.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "cp_tables.h"
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int32_t CPTables::linear_period_to_freq_tab[768]={
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535232,534749,534266,533784,533303,532822,532341,531861,
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531381,530902,530423,529944,529466,528988,528511,528034,
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527558,527082,526607,526131,525657,525183,524709,524236,
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523763,523290,522818,522346,521875,521404,520934,520464,
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519994,519525,519057,518588,518121,517653,517186,516720,
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516253,515788,515322,514858,514393,513929,513465,513002,
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512539,512077,511615,511154,510692,510232,509771,509312,
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508852,508393,507934,507476,507018,506561,506104,505647,
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505191,504735,504280,503825,503371,502917,502463,502010,
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501557,501104,500652,500201,499749,499298,498848,498398,
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497948,497499,497050,496602,496154,495706,495259,494812,
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494366,493920,493474,493029,492585,492140,491696,491253,
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490809,490367,489924,489482,489041,488600,488159,487718,
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487278,486839,486400,485961,485522,485084,484647,484210,
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483773,483336,482900,482465,482029,481595,481160,480726,
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480292,479859,479426,478994,478562,478130,477699,477268,
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476837,476407,475977,475548,475119,474690,474262,473834,
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473407,472979,472553,472126,471701,471275,470850,470425,
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470001,469577,469153,468730,468307,467884,467462,467041,
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466619,466198,465778,465358,464938,464518,464099,463681,
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463262,462844,462427,462010,461593,461177,460760,460345,
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459930,459515,459100,458686,458272,457859,457446,457033,
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456621,456209,455797,455386,454975,454565,454155,453745,
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453336,452927,452518,452110,451702,451294,450887,450481,
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450074,449668,449262,448857,448452,448048,447644,447240,
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446836,446433,446030,445628,445226,444824,444423,444022,
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443622,443221,442821,442422,442023,441624,441226,440828,
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440430,440033,439636,439239,438843,438447,438051,437656,
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437261,436867,436473,436079,435686,435293,434900,434508,
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434116,433724,433333,432942,432551,432161,431771,431382,
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430992,430604,430215,429827,429439,429052,428665,428278,
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427892,427506,427120,426735,426350,425965,425581,425197,
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424813,424430,424047,423665,423283,422901,422519,422138,
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421757,421377,420997,420617,420237,419858,419479,419101,
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418723,418345,417968,417591,417214,416838,416462,416086,
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415711,415336,414961,414586,414212,413839,413465,413092,
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412720,412347,411975,411604,411232,410862,410491,410121,
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409751,409381,409012,408643,408274,407906,407538,407170,
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406803,406436,406069,405703,405337,404971,404606,404241,
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403876,403512,403148,402784,402421,402058,401695,401333,
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400970,400609,400247,399886,399525,399165,398805,398445,
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398086,397727,397368,397009,396651,396293,395936,395579,
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395222,394865,394509,394153,393798,393442,393087,392733,
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392378,392024,391671,391317,390964,390612,390259,389907,
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389556,389204,388853,388502,388152,387802,387452,387102,
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386753,386404,386056,385707,385359,385012,384664,384317,
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383971,383624,383278,382932,382587,382242,381897,381552,
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381208,380864,380521,380177,379834,379492,379149,378807,
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378466,378124,377783,377442,377102,376762,376422,376082,
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375743,375404,375065,374727,374389,374051,373714,373377,
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373040,372703,372367,372031,371695,371360,371025,370690,
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370356,370022,369688,369355,369021,368688,368356,368023,
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367691,367360,367028,366697,366366,366036,365706,365376,
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365046,364717,364388,364059,363731,363403,363075,362747,
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362420,362093,361766,361440,361114,360788,360463,360137,
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359813,359488,359164,358840,358516,358193,357869,357547,
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357224,356902,356580,356258,355937,355616,355295,354974,
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354654,354334,354014,353695,353376,353057,352739,352420,
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352103,351785,351468,351150,350834,350517,350201,349885,
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349569,349254,348939,348624,348310,347995,347682,347368,
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347055,346741,346429,346116,345804,345492,345180,344869,
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344558,344247,343936,343626,343316,343006,342697,342388,
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342079,341770,341462,341154,340846,340539,340231,339924,
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339618,339311,339005,338700,338394,338089,337784,337479,
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337175,336870,336566,336263,335959,335656,335354,335051,
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334749,334447,334145,333844,333542,333242,332941,332641,
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332341,332041,331741,331442,331143,330844,330546,330247,
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329950,329652,329355,329057,328761,328464,328168,327872,
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327576,327280,326985,326690,326395,326101,325807,325513,
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325219,324926,324633,324340,324047,323755,323463,323171,
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322879,322588,322297,322006,321716,321426,321136,320846,
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320557,320267,319978,319690,319401,319113,318825,318538,
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318250,317963,317676,317390,317103,316817,316532,316246,
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315961,315676,315391,315106,314822,314538,314254,313971,
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313688,313405,313122,312839,312557,312275,311994,311712,
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311431,311150,310869,310589,310309,310029,309749,309470,
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309190,308911,308633,308354,308076,307798,307521,307243,
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306966,306689,306412,306136,305860,305584,305308,305033,
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304758,304483,304208,303934,303659,303385,303112,302838,
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302565,302292,302019,301747,301475,301203,300931,300660,
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300388,300117,299847,299576,299306,299036,298766,298497,
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298227,297958,297689,297421,297153,296884,296617,296349,
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296082,295815,295548,295281,295015,294749,294483,294217,
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293952,293686,293421,293157,292892,292628,292364,292100,
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291837,291574,291311,291048,290785,290523,290261,289999,
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289737,289476,289215,288954,288693,288433,288173,287913,
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287653,287393,287134,286875,286616,286358,286099,285841,
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285583,285326,285068,284811,284554,284298,284041,283785,
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283529,283273,283017,282762,282507,282252,281998,281743,
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281489,281235,280981,280728,280475,280222,279969,279716,
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279464,279212,278960,278708,278457,278206,277955,277704,
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277453,277203,276953,276703,276453,276204,275955,275706,
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275457,275209,274960,274712,274465,274217,273970,273722,
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273476,273229,272982,272736,272490,272244,271999,271753,
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271508,271263,271018,270774,270530,270286,270042,269798,
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269555,269312,269069,268826,268583,268341,268099,267857
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};
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uint16_t CPTables::old_period_table[OCTAVE*2]={
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0x6b00, 0x6800, 0x6500, 0x6220, 0x5f50, 0x5c80,
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0x5a00, 0x5740, 0x54d0, 0x5260, 0x5010, 0x4dc0,
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0x4b90, 0x4960, 0x4750, 0x4540, 0x4350, 0x4160,
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0x3f90, 0x3dc0, 0x3c10, 0x3a40, 0x38b0, 0x3700
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};
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#define LOGFAC 2*16
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uint16_t CPTables::log_table[104]= {
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LOGFAC*907,LOGFAC*900,LOGFAC*894,LOGFAC*887,
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LOGFAC*881,LOGFAC*875,LOGFAC*868,LOGFAC*862,
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LOGFAC*856,LOGFAC*850,LOGFAC*844,LOGFAC*838,
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LOGFAC*832,LOGFAC*826,LOGFAC*820,LOGFAC*814,
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LOGFAC*808,LOGFAC*802,LOGFAC*796,LOGFAC*791,
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LOGFAC*785,LOGFAC*779,LOGFAC*774,LOGFAC*768,
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LOGFAC*762,LOGFAC*757,LOGFAC*752,LOGFAC*746,
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LOGFAC*741,LOGFAC*736,LOGFAC*730,LOGFAC*725,
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LOGFAC*720,LOGFAC*715,LOGFAC*709,LOGFAC*704,
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LOGFAC*699,LOGFAC*694,LOGFAC*689,LOGFAC*684,
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LOGFAC*678,LOGFAC*675,LOGFAC*670,LOGFAC*665,
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LOGFAC*660,LOGFAC*655,LOGFAC*651,LOGFAC*646,
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LOGFAC*640,LOGFAC*636,LOGFAC*632,LOGFAC*628,
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LOGFAC*623,LOGFAC*619,LOGFAC*614,LOGFAC*610,
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LOGFAC*604,LOGFAC*601,LOGFAC*597,LOGFAC*592,
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LOGFAC*588,LOGFAC*584,LOGFAC*580,LOGFAC*575,
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LOGFAC*570,LOGFAC*567,LOGFAC*563,LOGFAC*559,
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LOGFAC*555,LOGFAC*551,LOGFAC*547,LOGFAC*543,
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LOGFAC*538,LOGFAC*535,LOGFAC*532,LOGFAC*528,
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LOGFAC*524,LOGFAC*520,LOGFAC*516,LOGFAC*513,
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LOGFAC*508,LOGFAC*505,LOGFAC*502,LOGFAC*498,
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LOGFAC*494,LOGFAC*491,LOGFAC*487,LOGFAC*484,
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LOGFAC*480,LOGFAC*477,LOGFAC*474,LOGFAC*470,
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LOGFAC*467,LOGFAC*463,LOGFAC*460,LOGFAC*457,
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LOGFAC*453,LOGFAC*450,LOGFAC*447,LOGFAC*443,
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LOGFAC*440,LOGFAC*437,LOGFAC*434,LOGFAC*431
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};
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int32_t CPTables::get_linear_period(uint16_t note,int32_t fine) {
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int32_t t;
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t=(24L*OCTAVE-(int32_t)note)*32L-(fine>>1);
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return t;
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}
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static int s3m_period_table[12]={1712,1616,1524,1440,1356,1280,1208,1140,1076,1016,960,907};
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int32_t CPTables::get_log_period(uint16_t note,int32_t p_c5freq) {
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return (8363L * 16 * s3m_period_table[note%12] >> (note/12)) / p_c5freq;
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}
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/*
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int32_t CPTables::get_log_period(uint16_t note,int32_t p_c5freq)
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{
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uint16_t n,o;
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uint16_t p1,p2;
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int32_t i;
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n=note%(2*OCTAVE);
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o=note/(2*OCTAVE);
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i=(n<<2); // n*8 + fine/16
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if (i<0)
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i=0;
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if (i>102)
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i=102;
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p1=log_table[i];
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p2=log_table[i+1];
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return (Interpolate(fine>>4,0,15,p1,p2)>>o);
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} */
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int32_t CPTables::get_old_period(uint16_t note,int32_t speed) {
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uint16_t n,o,res;
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// if (!speed) {
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// return 4242; /* <- prevent divide overflow */
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// }
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n=note%(2*OCTAVE);
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o=note/(2*OCTAVE);
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res=((8363L*(int32_t)old_period_table[n])>>o)/((old_period_table[17]>>1)+(speed<<2)); /*/(128-speed)*/;
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return res;
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}
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int32_t CPTables::get_linear_frequency(int32_t period) {
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int32_t shift_value=(((int32_t)period/768)-2);
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if (shift_value>0) {
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return linear_period_to_freq_tab[period%768]>>shift_value;
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} else {
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shift_value=0-shift_value;
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return linear_period_to_freq_tab[period%768]<<shift_value;
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}
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}
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int32_t CPTables::get_old_frequency(int32_t period) {
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return (8363L*1712L)/(period?period:1);
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}
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CPTables::CPTables(){
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}
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CPTables::~CPTables(){
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}
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