708 lines
23 KiB
C
708 lines
23 KiB
C
/* 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 nx = 0, ny = 0, nz = 0;
|
|
static void end_cb1(DACDriver *dacp, dacsample_t *buffer, size_t n) {
|
|
(void)dacp;
|
|
|
|
nz++;
|
|
if (dac_buffer == buffer) {
|
|
nx += n;
|
|
} else {
|
|
ny += n;
|
|
}
|
|
|
|
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
|
|
#if defined(STM32_EEPROM_ENABLE) || defined(PROTOCOL_ARM_ATSAM) || defined(EEPROM_SIZE)
|
|
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;
|
|
}
|
|
}
|