Synth_helpers.cpp

00001 /**************************************************************************/
00002 /*!
00003     @file     Synth_envfuncs.cpp
00004     @author   Jonne Valola
00005 
00006     @section LICENSE
00007 
00008     Pokitto development stage library
00009     Software License Agreement
00010 
00011     Copyright (c) 2015, Jonne Valola ("Author")
00012     All rights reserved.
00013 
00014     This library is intended solely for the purpose of Pokitto development.
00015 
00016     Redistribution and use in source and binary forms, with or without
00017     modification requires written permission from Author.
00018 */
00019 /**************************************************************************/
00020 
00021 #include "Pokitto.h "
00022 #include "Synth.h "
00023 
00024 #define PROGMEM
00025     #define pgm_read_byte(addr) (*(const unsigned char *)(addr))
00026     #ifndef WIN32
00027     #ifndef pgm_read_word
00028     #define pgm_read_word(addr) (*(const unsigned short *)(addr))
00029     #endif
00030     #else
00031     #define pgm_read_word(addr) (*(const unsigned int *)(addr))
00032     #endif // WIN32
00033 
00034 // http://www.arklyffe.com/main/2010/08/29/xorshift-pseudorandom-number-generator/
00035 static uint8_t y8 = 1;
00036 static uint16_t y16 = 1;
00037 
00038 // returns values from 1 to 255 inclusive, period is 255
00039 uint8_t xorshift8(void) {
00040     //y8 ^= (y8 << 7);
00041     y8 ^= (y8 * 128);
00042     y8 ^= (y8 >> 5);
00043     //return y8 ^= (y8 << 3);
00044     return y8 ^= (y8 * 8);
00045 }
00046 
00047 // returns values from 1 to 65535 inclusive, period is 65535
00048 uint16_t xorshift16(void) {
00049     //y16 ^= (y16 << 13);
00050     y16 ^= (y16 * 8192);
00051     y16 ^= (y16 >> 9);
00052     //return y16 ^= (y16 << 7);
00053     return y16 ^= (y16 * 128);
00054 }
00055 
00056 
00057 int8_t arptable[MAX_ARPMODE][5] = {
00058 {0,0,0,0,0}, // Off
00059 {0,4,7,4,0}, // Major tonic, 3rd, 5th
00060 {0,3,7,3,0}, // Minor tonic, 3rd, 5th
00061 {0,1,0,-1,0}, // vibrato test
00062 {0,12,0,12,0}, // octave test
00063 {0,11,14,17,21}, // funky test
00064 };
00065 
00066 /** VITAL TABLES **/
00067 
00068 uint16_t cincs[] ={
00069 36,  // 0 - NOTE_B0
00070 38,  // 1 - NOTE_C1
00071 40,  // 2 - NOTE_CS1
00072 43,  // 3 - NOTE_D1
00073 45,  // 4 - NOTE_DS1
00074 47,  // 5 - NOTE_E1
00075 51,  // 6 - NOTE_F1
00076 53,  // 7 - NOTE_FS1
00077 56,  // 8 - NOTE_G1
00078 60,  // 9 - NOTE_GS1
00079 63,  // 10 - NOTE_A1
00080 67,  // 11 - NOTE_AS1
00081 71,  // 12 - NOTE_B1
00082 75,  // 13 - NOTE_C2
00083 79,  // 14 - NOTE_CS2
00084 84,  // 15 - NOTE_D2
00085 90,  // 16 - NOTE_DS2
00086 94,  // 17 - NOTE_E2
00087 100,  // 18 - NOTE_F2
00088 107,  // 19 - NOTE_FS2
00089 113,  // 20 - NOTE_G2
00090 120,  // 21 - NOTE_GS2
00091 127,  // 22 - NOTE_A2
00092 135,  // 23 - NOTE_AS2
00093 142,  // 24 - NOTE_B2
00094 151,  // 25 - NOTE_C3
00095 160,  // 26 - NOTE_CS3
00096 169,  // 27 - NOTE_D3
00097 180,  // 28 - NOTE_DS3
00098 190,  // 29 - NOTE_E3
00099 201,  // 30 - NOTE_F3
00100 213,  // 31 - NOTE_FS3
00101 225,  // 32 - NOTE_G3
00102 239, //239,  // 33 - NOTE_GS3
00103 253,  // 34 - NOTE_A3
00104 267,  // 35 - NOTE_AS3
00105 284,  // 36 - NOTE_B3
00106 301,  // 37 - NOTE_C4
00107 318,  // 38 - NOTE_CS4
00108 338,  // 39 - NOTE_D4
00109 358,  // 40 - NOTE_DS4
00110 379,  // 41 - NOTE_E4
00111 402,  // 42 - NOTE_F4
00112 426,  // 43 - NOTE_FS4
00113 452,  // 44 - NOTE_G4
00114 478,  // 45 - NOTE_GS4
00115 504,  // 46 - NOTE_A4 // 440Hz
00116 537,  // 47 - NOTE_AS4
00117 570,  // 48 - NOTE_B4
00118 601,  // 49 - NOTE_C5
00119 636,  // 50 - NOTE_CS5
00120 676,  // 51 - NOTE_D5
00121 712,  // 52 - NOTE_DS5
00122 762,  // 53 - NOTE_E5
00123 799,  // 54 - NOTE_F5
00124 851,  // 55 - NOTE_FS5
00125 898,  // 56 - NOTE_G5
00126 950,  // 57 - NOTE_GS5
00127 1008,  // 58 - NOTE_A5
00128 1074,  // 59 - NOTE_AS5
00129 1130,  // 60 - NOTE_B5
00130 1214,  // 61 - NOTE_C6
00131 1285,  // 62 - NOTE_CS6
00132 1337,  // 63 - NOTE_D6
00133 1425,  // 64 - NOTE_DS6
00134 1524,  // 65 - NOTE_E6
00135 1598,  // 66 - NOTE_F6
00136 1680,  // 67 - NOTE_FS6
00137 1820,  // 68 - NOTE_G6
00138 1928,  // 69 - NOTE_GS6
00139 2048,  // 70 - NOTE_A6
00140 2114,  // 71 - NOTE_AS6
00141 2260,  // 72 - NOTE_B6
00142 2427,  // 73 - NOTE_C7
00143 2521,  // 74 - NOTE_CS7
00144 2731,  // 75 - NOTE_D7
00145 2849,  // 76 - NOTE_DS7
00146 2979,  // 77 - NOTE_E7
00147 3277,  // 78 - NOTE_F7
00148 3449,  // 79 - NOTE_FS7
00149 3641,  // 80 - NOTE_G7
00150 3855,  // 81 - NOTE_GS7
00151 4096,  // 82 - NOTE_A7
00152 4369,  // 83 - NOTE_AS7
00153 4681,  // 84 - NOTE_B7
00154 4681,  // 85 - NOTE_C8
00155 5041,  // 86 - NOTE_CS8
00156 5461,  // 87 - NOTE_D8
00157 5958,  // 88 - NOTE_DS8
00158 };
00159 
00160 
00161 /** NOTE TO TEXT TABLES **/
00162 
00163 const char note_0[] PROGMEM = "B-0";  // 0 - NOTE_B0
00164 const char note_1[] PROGMEM = "C-1";  // 1 - NOTE_C1
00165 const char note_2[] PROGMEM = "C#1";  // 2 - NOTE_CS1
00166 const char note_3[] PROGMEM = "D-1";  // 3 - NOTE_D1
00167 const char note_4[] PROGMEM = "D#1";  // 4 - NOTE_DS1
00168 const char note_5[] PROGMEM = "E-1";  // 5 - NOTE_E1
00169 const char note_6[] PROGMEM = "F-1";  // 6 - NOTE_F1
00170 const char note_7[] PROGMEM = "F#1";  // 7 - NOTE_FS1
00171 const char note_8[] PROGMEM = "G-1";  // 8 - NOTE_G1
00172 const char note_9[] PROGMEM = "G#1";  // 9 - NOTE_GS1
00173 const char note_10[] PROGMEM = "A-1";  // 10 - NOTE_A1
00174 const char note_11[] PROGMEM = "A#1";  // 11 - NOTE_AS1
00175 const char note_12[] PROGMEM = "B-1";  // 12 - NOTE_B1
00176 const char note_13[] PROGMEM = "C-2";  // 2 - NOTE_C2
00177 const char note_14[] PROGMEM = "C#2";  // 2 - NOTE_CS2
00178 const char note_15[] PROGMEM = "D-2";  // 3 - NOTE_D2
00179 const char note_16[] PROGMEM = "D#2";  // 4 - NOTE_DS2
00180 const char note_17[] PROGMEM = "E-2";  // 5 - NOTE_E2
00181 const char note_18[] PROGMEM = "F-2";  // 6 - NOTE_F2
00182 const char note_19[] PROGMEM = "F#2";  // 7 - NOTE_FS2
00183 const char note_20[] PROGMEM = "G-2";  // 8 - NOTE_G2
00184 const char note_21[] PROGMEM = "G#2";  // 9 - NOTE_GS2
00185 const char note_22[] PROGMEM = "A-2";  // 20 - NOTE_A2
00186 const char note_23[] PROGMEM = "A#2";  // 22 - NOTE_AS2
00187 const char note_24[] PROGMEM = "B-2";  // 22 - NOTE_B2
00188 const char note_25[] PROGMEM = "C-3";  // 3 - NOTE_C3
00189 const char note_26[] PROGMEM = "C#3";  // 3 - NOTE_CS3
00190 const char note_27[] PROGMEM = "D-3";  // 3 - NOTE_D3
00191 const char note_28[] PROGMEM = "D#3";  // 4 - NOTE_DS3
00192 const char note_29[] PROGMEM = "E-3";  // 5 - NOTE_E3
00193 const char note_30[] PROGMEM = "F-3";  // 6 - NOTE_F3
00194 const char note_31[] PROGMEM = "F#3";  // 7 - NOTE_FS3
00195 const char note_32[] PROGMEM = "G-3";  // 8 - NOTE_G3
00196 const char note_33[] PROGMEM = "G#3";  // 9 - NOTE_GS3
00197 const char note_34[] PROGMEM = "A-3";  // 30 - NOTE_A3
00198 const char note_35[] PROGMEM = "A#3";  // 33 - NOTE_AS3
00199 const char note_36[] PROGMEM = "B-3";  // 33 - NOTE_B3
00200 const char note_37[] PROGMEM = "C-4";  // 4 - NOTE_C4
00201 const char note_38[] PROGMEM = "C#4";  // 4 - NOTE_CS4
00202 const char note_39[] PROGMEM = "D-4";  // 3 - NOTE_D4
00203 const char note_40[] PROGMEM = "D#4";  // 4 - NOTE_DS4
00204 const char note_41[] PROGMEM = "E-4";  // 5 - NOTE_E4
00205 const char note_42[] PROGMEM = "F-4";  // 6 - NOTE_F4
00206 const char note_43[] PROGMEM = "F#4";  // 7 - NOTE_FS4
00207 const char note_44[] PROGMEM = "G-4";  // 8 - NOTE_G4
00208 const char note_45[] PROGMEM = "G#4";  // 9 - NOTE_GS4
00209 const char note_46[] PROGMEM = "A-4";  // 40 - NOTE_A4
00210 const char note_47[] PROGMEM = "A#4";  // 44 - NOTE_AS4
00211 const char note_48[] PROGMEM = "B-4";  // 44 - NOTE_B4
00212 const char note_49[] PROGMEM = "C-5";  // 5 - NOTE_C5
00213 const char note_50[] PROGMEM = "C#5";  // 5 - NOTE_CS5
00214 const char note_51[] PROGMEM = "D-5";  // 3 - NOTE_D5
00215 const char note_52[] PROGMEM = "D#5";  // 4 - NOTE_DS5
00216 const char note_53[] PROGMEM = "E-5";  // 5 - NOTE_E5
00217 const char note_54[] PROGMEM = "F-5";  // 6 - NOTE_F5
00218 const char note_55[] PROGMEM = "F#5";  // 7 - NOTE_FS5
00219 const char note_56[] PROGMEM = "G-5";  // 8 - NOTE_G5
00220 const char note_57[] PROGMEM = "G#5";  // 9 - NOTE_GS5
00221 const char note_58[] PROGMEM = "A-5";  // 50 - NOTE_A5
00222 const char note_59[] PROGMEM = "A#5";  // 55 - NOTE_AS5
00223 const char note_60[] PROGMEM = "B-5";  // 55 - NOTE_B5
00224 const char note_61[] PROGMEM = "C-6";  // 6 - NOTE_C6
00225 const char note_62[] PROGMEM = "C#6";  // 6 - NOTE_CS6
00226 const char note_63[] PROGMEM = "D-6";  // 3 - NOTE_D6
00227 const char note_64[] PROGMEM = "D#6";  // 4 - NOTE_DS6
00228 const char note_65[] PROGMEM = "E-6";  // 5 - NOTE_E6
00229 const char note_66[] PROGMEM = "F-6";  // 6 - NOTE_F6
00230 const char note_67[] PROGMEM = "F#6";  // 7 - NOTE_FS6
00231 const char note_68[] PROGMEM = "G-6";  // 8 - NOTE_G6
00232 const char note_69[] PROGMEM = "G#6";  // 9 - NOTE_GS6
00233 const char note_70[] PROGMEM = "A-6";  // 60 - NOTE_A6
00234 const char note_71[] PROGMEM = "A#6";  // 66 - NOTE_AS6
00235 const char note_72[] PROGMEM = "B-6";  // 66 - NOTE_B6
00236 const char note_73[] PROGMEM = "C-7";  // 7 - NOTE_C7
00237 const char note_74[] PROGMEM = "C#7";  // 7 - NOTE_CS7
00238 const char note_75[] PROGMEM = "D-7";  // 3 - NOTE_D7
00239 const char note_76[] PROGMEM = "D#7";  // 4 - NOTE_DS7
00240 const char note_77[] PROGMEM = "E-7";  // 5 - NOTE_E7
00241 const char note_78[] PROGMEM = "F-7";  // 6 - NOTE_F7
00242 const char note_79[] PROGMEM = "F#7";  // 7 - NOTE_FS7
00243 const char note_80[] PROGMEM = "G-7";  // 8 - NOTE_G7
00244 const char note_81[] PROGMEM = "G#7";  // 9 - NOTE_GS7
00245 const char note_82[] PROGMEM = "A-7";  // 70 - NOTE_A7
00246 const char note_83[] PROGMEM = "A#7";  // 77 - NOTE_AS7
00247 const char note_84[] PROGMEM = "B-7";  // 77 - NOTE_B7
00248 const char note_85[] PROGMEM = "C-8";  // 8 - NOTE_C8
00249 const char note_86[] PROGMEM = "C#8";  // 8 - NOTE_CS8
00250 const char note_87[] PROGMEM = "D-8";  // 3 - NOTE_D8
00251 const char note_88[] PROGMEM = "D#8";  // 4 - NOTE_DS8
00252 
00253 const char* note_table[] PROGMEM = {
00254  note_0,
00255  note_1,
00256  note_2,
00257  note_3,
00258  note_4,
00259  note_5,
00260  note_6,
00261  note_7,
00262  note_8,
00263  note_9,
00264  note_10,
00265  note_11,
00266  note_12,
00267  note_13,
00268  note_14,
00269  note_15,
00270  note_16,
00271  note_17,
00272  note_18,
00273  note_19,
00274  note_20,
00275  note_21,
00276  note_22,
00277  note_23,
00278  note_24,
00279  note_25,
00280  note_26,
00281  note_27,
00282  note_28,
00283  note_29,
00284  note_30,
00285  note_31,
00286  note_32,
00287  note_33,
00288  note_34,
00289  note_35,
00290  note_36,
00291  note_37,
00292  note_38,
00293  note_39,
00294  note_40,
00295  note_41,
00296  note_42,
00297  note_43,
00298  note_44,
00299  note_45,
00300  note_46,
00301  note_47,
00302  note_48,
00303  note_49,
00304  note_50,
00305  note_51,
00306  note_52,
00307  note_53,
00308  note_54,
00309  note_55,
00310  note_56,
00311  note_57,
00312  note_58,
00313  note_59,
00314  note_60,
00315  note_61,
00316  note_62,
00317  note_63,
00318  note_64,
00319  note_65,
00320  note_66,
00321  note_67,
00322  note_68,
00323  note_69,
00324  note_70,
00325  note_71,
00326  note_72,
00327  note_73,
00328  note_74,
00329  note_75,
00330  note_76,
00331  note_77,
00332  note_78,
00333  note_79,
00334  note_80,
00335  note_81,
00336  note_82,
00337  note_83,
00338  note_84,
00339  note_85,
00340  note_86,
00341  note_87,
00342  note_88,
00343 };
00344 
00345 void getNoteString(char * buffer, uint8_t i) {
00346     if (i>88) strcpy(buffer,"@@@");
00347     else strcpy(buffer, note_table[i]);
00348 }
00349