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Diffstat (limited to 'modules/chibi/cp_tables.cpp')
| -rw-r--r-- | modules/chibi/cp_tables.cpp | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/modules/chibi/cp_tables.cpp b/modules/chibi/cp_tables.cpp new file mode 100644 index 0000000000..8c62150f31 --- /dev/null +++ b/modules/chibi/cp_tables.cpp @@ -0,0 +1,254 @@ +/*************************************************************************/ +/* cp_tables.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ + +#include "cp_tables.h" + +int32_t CPTables::linear_period_to_freq_tab[768]={ + + 535232,534749,534266,533784,533303,532822,532341,531861, + 531381,530902,530423,529944,529466,528988,528511,528034, + 527558,527082,526607,526131,525657,525183,524709,524236, + 523763,523290,522818,522346,521875,521404,520934,520464, + 519994,519525,519057,518588,518121,517653,517186,516720, + 516253,515788,515322,514858,514393,513929,513465,513002, + 512539,512077,511615,511154,510692,510232,509771,509312, + 508852,508393,507934,507476,507018,506561,506104,505647, + 505191,504735,504280,503825,503371,502917,502463,502010, + 501557,501104,500652,500201,499749,499298,498848,498398, + 497948,497499,497050,496602,496154,495706,495259,494812, + 494366,493920,493474,493029,492585,492140,491696,491253, + 490809,490367,489924,489482,489041,488600,488159,487718, + 487278,486839,486400,485961,485522,485084,484647,484210, + 483773,483336,482900,482465,482029,481595,481160,480726, + 480292,479859,479426,478994,478562,478130,477699,477268, + 476837,476407,475977,475548,475119,474690,474262,473834, + 473407,472979,472553,472126,471701,471275,470850,470425, + 470001,469577,469153,468730,468307,467884,467462,467041, + 466619,466198,465778,465358,464938,464518,464099,463681, + 463262,462844,462427,462010,461593,461177,460760,460345, + 459930,459515,459100,458686,458272,457859,457446,457033, + 456621,456209,455797,455386,454975,454565,454155,453745, + 453336,452927,452518,452110,451702,451294,450887,450481, + 450074,449668,449262,448857,448452,448048,447644,447240, + 446836,446433,446030,445628,445226,444824,444423,444022, + 443622,443221,442821,442422,442023,441624,441226,440828, + 440430,440033,439636,439239,438843,438447,438051,437656, + 437261,436867,436473,436079,435686,435293,434900,434508, + 434116,433724,433333,432942,432551,432161,431771,431382, + 430992,430604,430215,429827,429439,429052,428665,428278, + 427892,427506,427120,426735,426350,425965,425581,425197, + 424813,424430,424047,423665,423283,422901,422519,422138, + 421757,421377,420997,420617,420237,419858,419479,419101, + 418723,418345,417968,417591,417214,416838,416462,416086, + 415711,415336,414961,414586,414212,413839,413465,413092, + 412720,412347,411975,411604,411232,410862,410491,410121, + 409751,409381,409012,408643,408274,407906,407538,407170, + 406803,406436,406069,405703,405337,404971,404606,404241, + 403876,403512,403148,402784,402421,402058,401695,401333, + 400970,400609,400247,399886,399525,399165,398805,398445, + 398086,397727,397368,397009,396651,396293,395936,395579, + 395222,394865,394509,394153,393798,393442,393087,392733, + 392378,392024,391671,391317,390964,390612,390259,389907, + 389556,389204,388853,388502,388152,387802,387452,387102, + 386753,386404,386056,385707,385359,385012,384664,384317, + 383971,383624,383278,382932,382587,382242,381897,381552, + 381208,380864,380521,380177,379834,379492,379149,378807, + 378466,378124,377783,377442,377102,376762,376422,376082, + 375743,375404,375065,374727,374389,374051,373714,373377, + 373040,372703,372367,372031,371695,371360,371025,370690, + 370356,370022,369688,369355,369021,368688,368356,368023, + 367691,367360,367028,366697,366366,366036,365706,365376, + 365046,364717,364388,364059,363731,363403,363075,362747, + 362420,362093,361766,361440,361114,360788,360463,360137, + 359813,359488,359164,358840,358516,358193,357869,357547, + 357224,356902,356580,356258,355937,355616,355295,354974, + 354654,354334,354014,353695,353376,353057,352739,352420, + 352103,351785,351468,351150,350834,350517,350201,349885, + 349569,349254,348939,348624,348310,347995,347682,347368, + 347055,346741,346429,346116,345804,345492,345180,344869, + 344558,344247,343936,343626,343316,343006,342697,342388, + 342079,341770,341462,341154,340846,340539,340231,339924, + 339618,339311,339005,338700,338394,338089,337784,337479, + 337175,336870,336566,336263,335959,335656,335354,335051, + 334749,334447,334145,333844,333542,333242,332941,332641, + 332341,332041,331741,331442,331143,330844,330546,330247, + 329950,329652,329355,329057,328761,328464,328168,327872, + 327576,327280,326985,326690,326395,326101,325807,325513, + 325219,324926,324633,324340,324047,323755,323463,323171, + 322879,322588,322297,322006,321716,321426,321136,320846, + 320557,320267,319978,319690,319401,319113,318825,318538, + 318250,317963,317676,317390,317103,316817,316532,316246, + 315961,315676,315391,315106,314822,314538,314254,313971, + 313688,313405,313122,312839,312557,312275,311994,311712, + 311431,311150,310869,310589,310309,310029,309749,309470, + 309190,308911,308633,308354,308076,307798,307521,307243, + 306966,306689,306412,306136,305860,305584,305308,305033, + 304758,304483,304208,303934,303659,303385,303112,302838, + 302565,302292,302019,301747,301475,301203,300931,300660, + 300388,300117,299847,299576,299306,299036,298766,298497, + 298227,297958,297689,297421,297153,296884,296617,296349, + 296082,295815,295548,295281,295015,294749,294483,294217, + 293952,293686,293421,293157,292892,292628,292364,292100, + 291837,291574,291311,291048,290785,290523,290261,289999, + 289737,289476,289215,288954,288693,288433,288173,287913, + 287653,287393,287134,286875,286616,286358,286099,285841, + 285583,285326,285068,284811,284554,284298,284041,283785, + 283529,283273,283017,282762,282507,282252,281998,281743, + 281489,281235,280981,280728,280475,280222,279969,279716, + 279464,279212,278960,278708,278457,278206,277955,277704, + 277453,277203,276953,276703,276453,276204,275955,275706, + 275457,275209,274960,274712,274465,274217,273970,273722, + 273476,273229,272982,272736,272490,272244,271999,271753, + 271508,271263,271018,270774,270530,270286,270042,269798, + 269555,269312,269069,268826,268583,268341,268099,267857 +}; + +uint16_t CPTables::old_period_table[OCTAVE*2]={ + + 0x6b00, 0x6800, 0x6500, 0x6220, 0x5f50, 0x5c80, + 0x5a00, 0x5740, 0x54d0, 0x5260, 0x5010, 0x4dc0, + 0x4b90, 0x4960, 0x4750, 0x4540, 0x4350, 0x4160, + 0x3f90, 0x3dc0, 0x3c10, 0x3a40, 0x38b0, 0x3700 +}; + +#define LOGFAC 2*16 + +uint16_t CPTables::log_table[104]= { + LOGFAC*907,LOGFAC*900,LOGFAC*894,LOGFAC*887, + LOGFAC*881,LOGFAC*875,LOGFAC*868,LOGFAC*862, + LOGFAC*856,LOGFAC*850,LOGFAC*844,LOGFAC*838, + LOGFAC*832,LOGFAC*826,LOGFAC*820,LOGFAC*814, + LOGFAC*808,LOGFAC*802,LOGFAC*796,LOGFAC*791, + LOGFAC*785,LOGFAC*779,LOGFAC*774,LOGFAC*768, + LOGFAC*762,LOGFAC*757,LOGFAC*752,LOGFAC*746, + LOGFAC*741,LOGFAC*736,LOGFAC*730,LOGFAC*725, + LOGFAC*720,LOGFAC*715,LOGFAC*709,LOGFAC*704, + LOGFAC*699,LOGFAC*694,LOGFAC*689,LOGFAC*684, + LOGFAC*678,LOGFAC*675,LOGFAC*670,LOGFAC*665, + LOGFAC*660,LOGFAC*655,LOGFAC*651,LOGFAC*646, + LOGFAC*640,LOGFAC*636,LOGFAC*632,LOGFAC*628, + LOGFAC*623,LOGFAC*619,LOGFAC*614,LOGFAC*610, + LOGFAC*604,LOGFAC*601,LOGFAC*597,LOGFAC*592, + LOGFAC*588,LOGFAC*584,LOGFAC*580,LOGFAC*575, + LOGFAC*570,LOGFAC*567,LOGFAC*563,LOGFAC*559, + LOGFAC*555,LOGFAC*551,LOGFAC*547,LOGFAC*543, + LOGFAC*538,LOGFAC*535,LOGFAC*532,LOGFAC*528, + LOGFAC*524,LOGFAC*520,LOGFAC*516,LOGFAC*513, + LOGFAC*508,LOGFAC*505,LOGFAC*502,LOGFAC*498, + LOGFAC*494,LOGFAC*491,LOGFAC*487,LOGFAC*484, + LOGFAC*480,LOGFAC*477,LOGFAC*474,LOGFAC*470, + LOGFAC*467,LOGFAC*463,LOGFAC*460,LOGFAC*457, + LOGFAC*453,LOGFAC*450,LOGFAC*447,LOGFAC*443, + LOGFAC*440,LOGFAC*437,LOGFAC*434,LOGFAC*431 +}; + + + +int32_t CPTables::get_linear_period(uint16_t note,int32_t fine) { + + int32_t t; + + t=(24L*OCTAVE-(int32_t)note)*32L-(fine>>1); + return t; +} + +static int s3m_period_table[12]={1712,1616,1524,1440,1356,1280,1208,1140,1076,1016,960,907}; + + +int32_t CPTables::get_log_period(uint16_t note,int32_t p_c5freq) { + + return (8363L * 16 * s3m_period_table[note%12] >> (note/12)) / p_c5freq; + +} + +/* +int32_t CPTables::get_log_period(uint16_t note,int32_t p_c5freq) +{ + uint16_t n,o; + uint16_t p1,p2; + int32_t i; + + n=note%(2*OCTAVE); + o=note/(2*OCTAVE); + i=(n<<2); // n*8 + fine/16 + + if (i<0) + i=0; + + if (i>102) + i=102; + + + p1=log_table[i]; + p2=log_table[i+1]; + + + return (Interpolate(fine>>4,0,15,p1,p2)>>o); + +} */ + +int32_t CPTables::get_old_period(uint16_t note,int32_t speed) { + + uint16_t n,o,res; + +// if (!speed) { + + // return 4242; /* <- prevent divide overflow */ + // } + + n=note%(2*OCTAVE); + o=note/(2*OCTAVE); + + res=((8363L*(int32_t)old_period_table[n])>>o)/((old_period_table[17]>>1)+(speed<<2)); /*/(128-speed)*/; + + return res; +} + +int32_t CPTables::get_linear_frequency(int32_t period) { + + int32_t shift_value=(((int32_t)period/768)-2); + if (shift_value>0) { + + return linear_period_to_freq_tab[period%768]>>shift_value; + } else { + shift_value=0-shift_value; + return linear_period_to_freq_tab[period%768]<<shift_value; + } +} + +int32_t CPTables::get_old_frequency(int32_t period) { + + return (8363L*1712L)/(period?period:1); + +} + +CPTables::CPTables(){ +} +CPTables::~CPTables(){ +} |