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Diffstat (limited to 'quantum/audio/audio_chibios.c')
| -rw-r--r-- | quantum/audio/audio_chibios.c | 702 |
1 files changed, 0 insertions, 702 deletions
diff --git a/quantum/audio/audio_chibios.c b/quantum/audio/audio_chibios.c deleted file mode 100644 index 1f147f2c92..0000000000 --- a/quantum/audio/audio_chibios.c +++ /dev/null @@ -1,702 +0,0 @@ -/* Copyright 2016 Jack Humbert - * - * 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, see <http://www.gnu.org/licenses/>. - */ - -#include "audio.h" -#include <ch.h> -#include <hal.h> - -#include <string.h> -#include "print.h" -#include "keymap.h" - -#include "eeconfig.h" - -// ----------------------------------------------------------------------------- - -int voices = 0; -int voice_place = 0; -float frequency = 0; -float frequency_alt = 0; -int volume = 0; -long position = 0; - -float frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0}; -int volumes[8] = {0, 0, 0, 0, 0, 0, 0, 0}; -bool sliding = false; - -float place = 0; - -uint8_t *sample; -uint16_t sample_length = 0; - -bool playing_notes = false; -bool playing_note = false; -float note_frequency = 0; -float note_length = 0; -uint8_t note_tempo = TEMPO_DEFAULT; -float note_timbre = TIMBRE_DEFAULT; -uint16_t note_position = 0; -float (*notes_pointer)[][2]; -uint16_t notes_count; -bool notes_repeat; -bool note_resting = false; - -uint16_t current_note = 0; -uint8_t rest_counter = 0; - -#ifdef VIBRATO_ENABLE -float vibrato_counter = 0; -float vibrato_strength = .5; -float vibrato_rate = 0.125; -#endif - -float polyphony_rate = 0; - -static bool audio_initialized = false; - -audio_config_t audio_config; - -uint16_t envelope_index = 0; -bool glissando = true; - -#ifndef STARTUP_SONG -# define STARTUP_SONG SONG(STARTUP_SOUND) -#endif -float startup_song[][2] = STARTUP_SONG; - -static void gpt_cb8(GPTDriver *gptp); - -#define DAC_BUFFER_SIZE 100 -#ifndef DAC_SAMPLE_MAX -# define DAC_SAMPLE_MAX 65535U -#endif - -#define START_CHANNEL_1() \ - gptStart(&GPTD6, &gpt6cfg1); \ - gptStartContinuous(&GPTD6, 2U) -#define START_CHANNEL_2() \ - gptStart(&GPTD7, &gpt7cfg1); \ - gptStartContinuous(&GPTD7, 2U) -#define STOP_CHANNEL_1() gptStopTimer(&GPTD6) -#define STOP_CHANNEL_2() gptStopTimer(&GPTD7) -#define RESTART_CHANNEL_1() \ - STOP_CHANNEL_1(); \ - START_CHANNEL_1() -#define RESTART_CHANNEL_2() \ - STOP_CHANNEL_2(); \ - START_CHANNEL_2() -#define UPDATE_CHANNEL_1_FREQ(freq) \ - gpt6cfg1.frequency = freq * DAC_BUFFER_SIZE; \ - RESTART_CHANNEL_1() -#define UPDATE_CHANNEL_2_FREQ(freq) \ - gpt7cfg1.frequency = freq * DAC_BUFFER_SIZE; \ - RESTART_CHANNEL_2() -#define GET_CHANNEL_1_FREQ (uint16_t)(gpt6cfg1.frequency * DAC_BUFFER_SIZE) -#define GET_CHANNEL_2_FREQ (uint16_t)(gpt7cfg1.frequency * DAC_BUFFER_SIZE) - -/* - * GPT6 configuration. - */ -// static const GPTConfig gpt6cfg1 = { -// .frequency = 1000000U, -// .callback = NULL, -// .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */ -// .dier = 0U -// }; - -GPTConfig gpt6cfg1 = {.frequency = 440U * DAC_BUFFER_SIZE, - .callback = NULL, - .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */ - .dier = 0U}; - -GPTConfig gpt7cfg1 = {.frequency = 440U * DAC_BUFFER_SIZE, - .callback = NULL, - .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */ - .dier = 0U}; - -GPTConfig gpt8cfg1 = {.frequency = 10, - .callback = gpt_cb8, - .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */ - .dier = 0U}; - -/* - * DAC test buffer (sine wave). - */ -// static const dacsample_t dac_buffer[DAC_BUFFER_SIZE] = { -// 2047, 2082, 2118, 2154, 2189, 2225, 2260, 2296, 2331, 2367, 2402, 2437, -// 2472, 2507, 2542, 2576, 2611, 2645, 2679, 2713, 2747, 2780, 2813, 2846, -// 2879, 2912, 2944, 2976, 3008, 3039, 3070, 3101, 3131, 3161, 3191, 3221, -// 3250, 3278, 3307, 3335, 3362, 3389, 3416, 3443, 3468, 3494, 3519, 3544, -// 3568, 3591, 3615, 3637, 3660, 3681, 3703, 3723, 3744, 3763, 3782, 3801, -// 3819, 3837, 3854, 3870, 3886, 3902, 3917, 3931, 3944, 3958, 3970, 3982, -// 3993, 4004, 4014, 4024, 4033, 4041, 4049, 4056, 4062, 4068, 4074, 4078, -// 4082, 4086, 4089, 4091, 4092, 4093, 4094, 4093, 4092, 4091, 4089, 4086, -// 4082, 4078, 4074, 4068, 4062, 4056, 4049, 4041, 4033, 4024, 4014, 4004, -// 3993, 3982, 3970, 3958, 3944, 3931, 3917, 3902, 3886, 3870, 3854, 3837, -// 3819, 3801, 3782, 3763, 3744, 3723, 3703, 3681, 3660, 3637, 3615, 3591, -// 3568, 3544, 3519, 3494, 3468, 3443, 3416, 3389, 3362, 3335, 3307, 3278, -// 3250, 3221, 3191, 3161, 3131, 3101, 3070, 3039, 3008, 2976, 2944, 2912, -// 2879, 2846, 2813, 2780, 2747, 2713, 2679, 2645, 2611, 2576, 2542, 2507, -// 2472, 2437, 2402, 2367, 2331, 2296, 2260, 2225, 2189, 2154, 2118, 2082, -// 2047, 2012, 1976, 1940, 1905, 1869, 1834, 1798, 1763, 1727, 1692, 1657, -// 1622, 1587, 1552, 1518, 1483, 1449, 1415, 1381, 1347, 1314, 1281, 1248, -// 1215, 1182, 1150, 1118, 1086, 1055, 1024, 993, 963, 933, 903, 873, -// 844, 816, 787, 759, 732, 705, 678, 651, 626, 600, 575, 550, -// 526, 503, 479, 457, 434, 413, 391, 371, 350, 331, 312, 293, -// 275, 257, 240, 224, 208, 192, 177, 163, 150, 136, 124, 112, -// 101, 90, 80, 70, 61, 53, 45, 38, 32, 26, 20, 16, -// 12, 8, 5, 3, 2, 1, 0, 1, 2, 3, 5, 8, -// 12, 16, 20, 26, 32, 38, 45, 53, 61, 70, 80, 90, -// 101, 112, 124, 136, 150, 163, 177, 192, 208, 224, 240, 257, -// 275, 293, 312, 331, 350, 371, 391, 413, 434, 457, 479, 503, -// 526, 550, 575, 600, 626, 651, 678, 705, 732, 759, 787, 816, -// 844, 873, 903, 933, 963, 993, 1024, 1055, 1086, 1118, 1150, 1182, -// 1215, 1248, 1281, 1314, 1347, 1381, 1415, 1449, 1483, 1518, 1552, 1587, -// 1622, 1657, 1692, 1727, 1763, 1798, 1834, 1869, 1905, 1940, 1976, 2012 -// }; - -// static const dacsample_t dac_buffer_2[DAC_BUFFER_SIZE] = { -// 12, 8, 5, 3, 2, 1, 0, 1, 2, 3, 5, 8, -// 12, 16, 20, 26, 32, 38, 45, 53, 61, 70, 80, 90, -// 101, 112, 124, 136, 150, 163, 177, 192, 208, 224, 240, 257, -// 275, 293, 312, 331, 350, 371, 391, 413, 434, 457, 479, 503, -// 526, 550, 575, 600, 626, 651, 678, 705, 732, 759, 787, 816, -// 844, 873, 903, 933, 963, 993, 1024, 1055, 1086, 1118, 1150, 1182, -// 1215, 1248, 1281, 1314, 1347, 1381, 1415, 1449, 1483, 1518, 1552, 1587, -// 1622, 1657, 1692, 1727, 1763, 1798, 1834, 1869, 1905, 1940, 1976, 2012, -// 2047, 2082, 2118, 2154, 2189, 2225, 2260, 2296, 2331, 2367, 2402, 2437, -// 2472, 2507, 2542, 2576, 2611, 2645, 2679, 2713, 2747, 2780, 2813, 2846, -// 2879, 2912, 2944, 2976, 3008, 3039, 3070, 3101, 3131, 3161, 3191, 3221, -// 3250, 3278, 3307, 3335, 3362, 3389, 3416, 3443, 3468, 3494, 3519, 3544, -// 3568, 3591, 3615, 3637, 3660, 3681, 3703, 3723, 3744, 3763, 3782, 3801, -// 3819, 3837, 3854, 3870, 3886, 3902, 3917, 3931, 3944, 3958, 3970, 3982, -// 3993, 4004, 4014, 4024, 4033, 4041, 4049, 4056, 4062, 4068, 4074, 4078, -// 4082, 4086, 4089, 4091, 4092, 4093, 4094, 4093, 4092, 4091, 4089, 4086, -// 4082, 4078, 4074, 4068, 4062, 4056, 4049, 4041, 4033, 4024, 4014, 4004, -// 3993, 3982, 3970, 3958, 3944, 3931, 3917, 3902, 3886, 3870, 3854, 3837, -// 3819, 3801, 3782, 3763, 3744, 3723, 3703, 3681, 3660, 3637, 3615, 3591, -// 3568, 3544, 3519, 3494, 3468, 3443, 3416, 3389, 3362, 3335, 3307, 3278, -// 3250, 3221, 3191, 3161, 3131, 3101, 3070, 3039, 3008, 2976, 2944, 2912, -// 2879, 2846, 2813, 2780, 2747, 2713, 2679, 2645, 2611, 2576, 2542, 2507, -// 2472, 2437, 2402, 2367, 2331, 2296, 2260, 2225, 2189, 2154, 2118, 2082, -// 2047, 2012, 1976, 1940, 1905, 1869, 1834, 1798, 1763, 1727, 1692, 1657, -// 1622, 1587, 1552, 1518, 1483, 1449, 1415, 1381, 1347, 1314, 1281, 1248, -// 1215, 1182, 1150, 1118, 1086, 1055, 1024, 993, 963, 933, 903, 873, -// 844, 816, 787, 759, 732, 705, 678, 651, 626, 600, 575, 550, -// 526, 503, 479, 457, 434, 413, 391, 371, 350, 331, 312, 293, -// 275, 257, 240, 224, 208, 192, 177, 163, 150, 136, 124, 112, -// 101, 90, 80, 70, 61, 53, 45, 38, 32, 26, 20, 16 -// }; - -// squarewave -static const dacsample_t dac_buffer[DAC_BUFFER_SIZE] = { - // First half is max, second half is 0 - [0 ... DAC_BUFFER_SIZE / 2 - 1] = DAC_SAMPLE_MAX, - [DAC_BUFFER_SIZE / 2 ... DAC_BUFFER_SIZE - 1] = 0, -}; - -// squarewave -static const dacsample_t dac_buffer_2[DAC_BUFFER_SIZE] = { - // opposite of dac_buffer above - [0 ... DAC_BUFFER_SIZE / 2 - 1] = 0, - [DAC_BUFFER_SIZE / 2 ... DAC_BUFFER_SIZE - 1] = DAC_SAMPLE_MAX, -}; - -/* - * DAC streaming callback. - */ -size_t nz = 0; -static void end_cb1(DACDriver *dacp) { - (void)dacp; - - nz++; - if ((nz % 1000) == 0) { - // palTogglePad(GPIOD, GPIOD_LED3); - } -} - -/* - * DAC error callback. - */ -static void error_cb1(DACDriver *dacp, dacerror_t err) { - (void)dacp; - (void)err; - - chSysHalt("DAC failure"); -} - -static const DACConfig dac1cfg1 = {.init = DAC_SAMPLE_MAX, .datamode = DAC_DHRM_12BIT_RIGHT}; - -static const DACConversionGroup dacgrpcfg1 = {.num_channels = 1U, .end_cb = end_cb1, .error_cb = error_cb1, .trigger = DAC_TRG(0)}; - -static const DACConfig dac1cfg2 = {.init = DAC_SAMPLE_MAX, .datamode = DAC_DHRM_12BIT_RIGHT}; - -static const DACConversionGroup dacgrpcfg2 = {.num_channels = 1U, .end_cb = end_cb1, .error_cb = error_cb1, .trigger = DAC_TRG(0)}; - -void audio_init() { - if (audio_initialized) { - return; - } - -// Check EEPROM -#ifdef EEPROM_ENABLE - if (!eeconfig_is_enabled()) { - eeconfig_init(); - } - audio_config.raw = eeconfig_read_audio(); -#else // ARM EEPROM - audio_config.enable = true; -# ifdef AUDIO_CLICKY_ON - audio_config.clicky_enable = true; -# endif -#endif // ARM EEPROM - - /* - * Starting DAC1 driver, setting up the output pin as analog as suggested - * by the Reference Manual. - */ - palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG); - palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG); - dacStart(&DACD1, &dac1cfg1); - dacStart(&DACD2, &dac1cfg2); - - /* - * Starting GPT6/7 driver, it is used for triggering the DAC. - */ - START_CHANNEL_1(); - START_CHANNEL_2(); - - /* - * Starting a continuous conversion. - */ - dacStartConversion(&DACD1, &dacgrpcfg1, (dacsample_t *)dac_buffer, DAC_BUFFER_SIZE); - dacStartConversion(&DACD2, &dacgrpcfg2, (dacsample_t *)dac_buffer_2, DAC_BUFFER_SIZE); - - audio_initialized = true; - - if (audio_config.enable) { - PLAY_SONG(startup_song); - } else { - stop_all_notes(); - } -} - -void stop_all_notes() { - dprintf("audio stop all notes"); - - if (!audio_initialized) { - audio_init(); - } - voices = 0; - - gptStopTimer(&GPTD6); - gptStopTimer(&GPTD7); - gptStopTimer(&GPTD8); - - playing_notes = false; - playing_note = false; - frequency = 0; - frequency_alt = 0; - volume = 0; - - for (uint8_t i = 0; i < 8; i++) { - frequencies[i] = 0; - volumes[i] = 0; - } -} - -void stop_note(float freq) { - dprintf("audio stop note freq=%d", (int)freq); - - if (playing_note) { - if (!audio_initialized) { - audio_init(); - } - for (int i = 7; i >= 0; i--) { - if (frequencies[i] == freq) { - frequencies[i] = 0; - volumes[i] = 0; - for (int j = i; (j < 7); j++) { - frequencies[j] = frequencies[j + 1]; - frequencies[j + 1] = 0; - volumes[j] = volumes[j + 1]; - volumes[j + 1] = 0; - } - break; - } - } - voices--; - if (voices < 0) { - voices = 0; - } - if (voice_place >= voices) { - voice_place = 0; - } - if (voices == 0) { - STOP_CHANNEL_1(); - STOP_CHANNEL_2(); - gptStopTimer(&GPTD8); - frequency = 0; - frequency_alt = 0; - volume = 0; - playing_note = false; - } - } -} - -#ifdef VIBRATO_ENABLE - -float mod(float a, int b) { - float r = fmod(a, b); - return r < 0 ? r + b : r; -} - -float vibrato(float average_freq) { -# ifdef VIBRATO_STRENGTH_ENABLE - float vibrated_freq = average_freq * pow(vibrato_lut[(int)vibrato_counter], vibrato_strength); -# else - float vibrated_freq = average_freq * vibrato_lut[(int)vibrato_counter]; -# endif - vibrato_counter = mod((vibrato_counter + vibrato_rate * (1.0 + 440.0 / average_freq)), VIBRATO_LUT_LENGTH); - return vibrated_freq; -} - -#endif - -static void gpt_cb8(GPTDriver *gptp) { - float freq; - - if (playing_note) { - if (voices > 0) { - float freq_alt = 0; - if (voices > 1) { - if (polyphony_rate == 0) { - if (glissando) { - if (frequency_alt != 0 && frequency_alt < frequencies[voices - 2] && frequency_alt < frequencies[voices - 2] * pow(2, -440 / frequencies[voices - 2] / 12 / 2)) { - frequency_alt = frequency_alt * pow(2, 440 / frequency_alt / 12 / 2); - } else if (frequency_alt != 0 && frequency_alt > frequencies[voices - 2] && frequency_alt > frequencies[voices - 2] * pow(2, 440 / frequencies[voices - 2] / 12 / 2)) { - frequency_alt = frequency_alt * pow(2, -440 / frequency_alt / 12 / 2); - } else { - frequency_alt = frequencies[voices - 2]; - } - } else { - frequency_alt = frequencies[voices - 2]; - } - -#ifdef VIBRATO_ENABLE - if (vibrato_strength > 0) { - freq_alt = vibrato(frequency_alt); - } else { - freq_alt = frequency_alt; - } -#else - freq_alt = frequency_alt; -#endif - } - - if (envelope_index < 65535) { - envelope_index++; - } - - freq_alt = voice_envelope(freq_alt); - - if (freq_alt < 30.517578125) { - freq_alt = 30.52; - } - - if (GET_CHANNEL_2_FREQ != (uint16_t)freq_alt) { - UPDATE_CHANNEL_2_FREQ(freq_alt); - } else { - RESTART_CHANNEL_2(); - } - // note_timbre; - } - - if (polyphony_rate > 0) { - if (voices > 1) { - voice_place %= voices; - if (place++ > (frequencies[voice_place] / polyphony_rate)) { - voice_place = (voice_place + 1) % voices; - place = 0.0; - } - } - -#ifdef VIBRATO_ENABLE - if (vibrato_strength > 0) { - freq = vibrato(frequencies[voice_place]); - } else { - freq = frequencies[voice_place]; - } -#else - freq = frequencies[voice_place]; -#endif - } else { - if (glissando) { - if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440 / frequencies[voices - 1] / 12 / 2)) { - frequency = frequency * pow(2, 440 / frequency / 12 / 2); - } else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440 / frequencies[voices - 1] / 12 / 2)) { - frequency = frequency * pow(2, -440 / frequency / 12 / 2); - } else { - frequency = frequencies[voices - 1]; - } - } else { - frequency = frequencies[voices - 1]; - } - -#ifdef VIBRATO_ENABLE - if (vibrato_strength > 0) { - freq = vibrato(frequency); - } else { - freq = frequency; - } -#else - freq = frequency; -#endif - } - - if (envelope_index < 65535) { - envelope_index++; - } - - freq = voice_envelope(freq); - - if (freq < 30.517578125) { - freq = 30.52; - } - - if (GET_CHANNEL_1_FREQ != (uint16_t)freq) { - UPDATE_CHANNEL_1_FREQ(freq); - } else { - RESTART_CHANNEL_1(); - } - // note_timbre; - } - } - - if (playing_notes) { - if (note_frequency > 0) { -#ifdef VIBRATO_ENABLE - if (vibrato_strength > 0) { - freq = vibrato(note_frequency); - } else { - freq = note_frequency; - } -#else - freq = note_frequency; -#endif - - if (envelope_index < 65535) { - envelope_index++; - } - freq = voice_envelope(freq); - - if (GET_CHANNEL_1_FREQ != (uint16_t)freq) { - UPDATE_CHANNEL_1_FREQ(freq); - UPDATE_CHANNEL_2_FREQ(freq); - } - // note_timbre; - } else { - // gptStopTimer(&GPTD6); - // gptStopTimer(&GPTD7); - } - - note_position++; - bool end_of_note = false; - if (GET_CHANNEL_1_FREQ > 0) { - if (!note_resting) - end_of_note = (note_position >= (note_length * 8 - 1)); - else - end_of_note = (note_position >= (note_length * 8)); - } else { - end_of_note = (note_position >= (note_length * 8)); - } - - if (end_of_note) { - current_note++; - if (current_note >= notes_count) { - if (notes_repeat) { - current_note = 0; - } else { - STOP_CHANNEL_1(); - STOP_CHANNEL_2(); - // gptStopTimer(&GPTD8); - playing_notes = false; - return; - } - } - if (!note_resting) { - note_resting = true; - current_note--; - if ((*notes_pointer)[current_note][0] == (*notes_pointer)[current_note + 1][0]) { - note_frequency = 0; - note_length = 1; - } else { - note_frequency = (*notes_pointer)[current_note][0]; - note_length = 1; - } - } else { - note_resting = false; - envelope_index = 0; - note_frequency = (*notes_pointer)[current_note][0]; - note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100); - } - - note_position = 0; - } - } - - if (!audio_config.enable) { - playing_notes = false; - playing_note = false; - } -} - -void play_note(float freq, int vol) { - dprintf("audio play note freq=%d vol=%d", (int)freq, vol); - - if (!audio_initialized) { - audio_init(); - } - - if (audio_config.enable && voices < 8) { - // Cancel notes if notes are playing - if (playing_notes) { - stop_all_notes(); - } - - playing_note = true; - - envelope_index = 0; - - if (freq > 0) { - frequencies[voices] = freq; - volumes[voices] = vol; - voices++; - } - - gptStart(&GPTD8, &gpt8cfg1); - gptStartContinuous(&GPTD8, 2U); - RESTART_CHANNEL_1(); - RESTART_CHANNEL_2(); - } -} - -void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat) { - if (!audio_initialized) { - audio_init(); - } - - if (audio_config.enable) { - // Cancel note if a note is playing - if (playing_note) { - stop_all_notes(); - } - - playing_notes = true; - - notes_pointer = np; - notes_count = n_count; - notes_repeat = n_repeat; - - place = 0; - current_note = 0; - - note_frequency = (*notes_pointer)[current_note][0]; - note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100); - note_position = 0; - - gptStart(&GPTD8, &gpt8cfg1); - gptStartContinuous(&GPTD8, 2U); - RESTART_CHANNEL_1(); - RESTART_CHANNEL_2(); - } -} - -bool is_playing_notes(void) { return playing_notes; } - -bool is_audio_on(void) { return (audio_config.enable != 0); } - -void audio_toggle(void) { - audio_config.enable ^= 1; - eeconfig_update_audio(audio_config.raw); - if (audio_config.enable) { - audio_on_user(); - } -} - -void audio_on(void) { - audio_config.enable = 1; - eeconfig_update_audio(audio_config.raw); - audio_on_user(); -} - -void audio_off(void) { - stop_all_notes(); - audio_config.enable = 0; - eeconfig_update_audio(audio_config.raw); -} - -#ifdef VIBRATO_ENABLE - -// Vibrato rate functions - -void set_vibrato_rate(float rate) { vibrato_rate = rate; } - -void increase_vibrato_rate(float change) { vibrato_rate *= change; } - -void decrease_vibrato_rate(float change) { vibrato_rate /= change; } - -# ifdef VIBRATO_STRENGTH_ENABLE - -void set_vibrato_strength(float strength) { vibrato_strength = strength; } - -void increase_vibrato_strength(float change) { vibrato_strength *= change; } - -void decrease_vibrato_strength(float change) { vibrato_strength /= change; } - -# endif /* VIBRATO_STRENGTH_ENABLE */ - -#endif /* VIBRATO_ENABLE */ - -// Polyphony functions - -void set_polyphony_rate(float rate) { polyphony_rate = rate; } - -void enable_polyphony() { polyphony_rate = 5; } - -void disable_polyphony() { polyphony_rate = 0; } - -void increase_polyphony_rate(float change) { polyphony_rate *= change; } - -void decrease_polyphony_rate(float change) { polyphony_rate /= change; } - -// Timbre function - -void set_timbre(float timbre) { note_timbre = timbre; } - -// Tempo functions - -void set_tempo(uint8_t tempo) { note_tempo = tempo; } - -void decrease_tempo(uint8_t tempo_change) { note_tempo += tempo_change; } - -void increase_tempo(uint8_t tempo_change) { - if (note_tempo - tempo_change < 10) { - note_tempo = 10; - } else { - note_tempo -= tempo_change; - } -} |