diff options
Diffstat (limited to 'quantum/audio')
| -rw-r--r-- | quantum/audio/audio.c | 770 | ||||
| -rw-r--r-- | quantum/audio/audio.h | 17 | ||||
| -rw-r--r-- | quantum/audio/audio_pwm.c | 643 | ||||
| -rw-r--r-- | quantum/audio/luts.c | 382 | ||||
| -rw-r--r-- | quantum/audio/luts.h | 15 | ||||
| -rw-r--r-- | quantum/audio/vibrato_lut.h | 28 | ||||
| -rw-r--r-- | quantum/audio/voices.c | 79 | ||||
| -rw-r--r-- | quantum/audio/voices.h | 5 |
8 files changed, 1436 insertions, 503 deletions
diff --git a/quantum/audio/audio.c b/quantum/audio/audio.c index e85370d95..27b64f8c9 100644 --- a/quantum/audio/audio.c +++ b/quantum/audio/audio.c @@ -1,6 +1,6 @@ #include <stdio.h> #include <string.h> -#include <math.h> +//#include <math.h> #include <avr/pgmspace.h> #include <avr/interrupt.h> #include <avr/io.h> @@ -10,30 +10,28 @@ #include "eeconfig.h" -#ifdef VIBRATO_ENABLE - #include "vibrato_lut.h" -#endif +#define CPU_PRESCALER 8 -#define PI 3.14159265 +// ----------------------------------------------------------------------------- +// Timer Abstractions +// ----------------------------------------------------------------------------- -#define CPU_PRESCALER 8 +// TIMSK3 - Timer/Counter #3 Interrupt Mask Register +// Turn on/off 3A interputs, stopping/enabling the ISR calls +#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A) +#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A) -#ifdef PWM_AUDIO - #include "wave.h" - #define SAMPLE_DIVIDER 39 - #define SAMPLE_RATE (2000000.0/SAMPLE_DIVIDER/2048) - // Resistor value of 1/ (2 * PI * 10nF * (2000000 hertz / SAMPLE_DIVIDER / 10)) for 10nF cap +// TCCR3A: Timer/Counter #3 Control Register +// Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6 +#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1); +#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0)); - float places[8] = {0, 0, 0, 0, 0, 0, 0, 0}; - uint16_t place_int = 0; - bool repeat = true; -#endif +// Fast PWM Mode Controls +#define TIMER_3_PERIOD ICR3 +#define TIMER_3_DUTY_CYCLE OCR3A + +// ----------------------------------------------------------------------------- -void delay_us(int count) { - while(count--) { - _delay_us(1); - } -} int voices = 0; int voice_place = 0; @@ -45,26 +43,23 @@ 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; -int max = 0xFF; -float sum = 0; float place = 0; uint8_t * sample; uint16_t sample_length = 0; -// float freq = 0; - -bool notes = false; -bool note = false; -float note_frequency = 0; -float note_length = 0; -float note_tempo = TEMPO_DEFAULT; -float note_timbre = TIMBRE_DEFAULT; + +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; -float notes_rest; -bool note_resting = false; +bool notes_repeat; +float notes_rest; +bool note_resting = false; uint8_t current_note = 0; uint8_t rest_counter = 0; @@ -77,175 +72,65 @@ float vibrato_rate = 0.125; float polyphony_rate = 0; -bool inited = false; +static bool audio_initialized = false; audio_config_t audio_config; uint16_t envelope_index = 0; -void audio_toggle(void) { - audio_config.enable ^= 1; - eeconfig_update_audio(audio_config.raw); -} - -void audio_on(void) { - audio_config.enable = 1; - eeconfig_update_audio(audio_config.raw); -} - -void audio_off(void) { - 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 - -#endif - -// 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(float tempo) { - note_tempo = tempo; -} - -void decrease_tempo(uint8_t tempo_change) { - note_tempo += (float) tempo_change; -} - -void increase_tempo(uint8_t tempo_change) { - if (note_tempo - (float) tempo_change < 10) { - note_tempo = 10; - } else { - note_tempo -= (float) tempo_change; - } -} - -void audio_init() { +void audio_init() +{ - /* check signature */ - if (!eeconfig_is_enabled()) { + // Check EEPROM + if (!eeconfig_is_enabled()) + { eeconfig_init(); } audio_config.raw = eeconfig_read_audio(); - #ifdef PWM_AUDIO - PLLFRQ = _BV(PDIV2); - PLLCSR = _BV(PLLE); - while(!(PLLCSR & _BV(PLOCK))); - PLLFRQ |= _BV(PLLTM0); /* PCK 48MHz */ - - /* Init a fast PWM on Timer4 */ - TCCR4A = _BV(COM4A0) | _BV(PWM4A); /* Clear OC4A on Compare Match */ - TCCR4B = _BV(CS40); /* No prescaling => f = PCK/256 = 187500Hz */ - OCR4A = 0; + // Set port PC6 (OC3A and /OC4A) as output + DDRC |= _BV(PORTC6); - /* Enable the OC4A output */ - DDRC |= _BV(PORTC6); + DISABLE_AUDIO_COUNTER_3_ISR; - TIMSK3 &= ~_BV(OCIE3A); // Turn off 3A interputs - - TCCR3A = 0x0; // Options not needed - TCCR3B = _BV(CS31) | _BV(CS30) | _BV(WGM32); // 64th prescaling and CTC - OCR3A = SAMPLE_DIVIDER - 1; // Correct count/compare, related to sample playback - #else - DDRC |= _BV(PORTC6); - - TIMSK3 &= ~_BV(OCIE3A); // Turn off 3A interputs - - TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30); - TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30); - #endif + // TCCR3A / TCCR3B: Timer/Counter #3 Control Registers + // Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6 + // Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14 (Period = ICR3, Duty Cycle = OCR3A) + // Clock Select (CS3n) = 0b010 = Clock / 8 + TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30); + TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30); - inited = true; + audio_initialized = true; } -void stop_all_notes() { - if (!inited) { +void stop_all_notes() +{ + if (!audio_initialized) { audio_init(); } voices = 0; - #ifdef PWM_AUDIO - TIMSK3 &= ~_BV(OCIE3A); - #else - TIMSK3 &= ~_BV(OCIE3A); - TCCR3A &= ~_BV(COM3A1); - #endif - notes = false; - note = false; + + DISABLE_AUDIO_COUNTER_3_ISR; + DISABLE_AUDIO_COUNTER_3_OUTPUT; + + playing_notes = false; + playing_note = false; frequency = 0; volume = 0; - for (int i = 0; i < 8; i++) { + for (uint8_t i = 0; i < 8; i++) + { frequencies[i] = 0; volumes[i] = 0; } } -void stop_note(float freq) { - if (note) { - if (!inited) { +void stop_note(float freq) +{ + if (playing_note) { + if (!audio_initialized) { audio_init(); } - #ifdef PWM_AUDIO - freq = freq / SAMPLE_RATE; - #endif for (int i = 7; i >= 0; i--) { if (frequencies[i] == freq) { frequencies[i] = 0; @@ -266,15 +151,11 @@ void stop_note(float freq) { voice_place = 0; } if (voices == 0) { - #ifdef PWM_AUDIO - TIMSK3 &= ~_BV(OCIE3A); - #else - TIMSK3 &= ~_BV(OCIE3A); - TCCR3A &= ~_BV(COM3A1); - #endif + DISABLE_AUDIO_COUNTER_3_ISR; + DISABLE_AUDIO_COUNTER_3_OUTPUT; frequency = 0; volume = 0; - note = false; + playing_note = false; } } } @@ -289,9 +170,9 @@ float mod(float a, int b) float vibrato(float average_freq) { #ifdef VIBRATO_STRENGTH_ENABLE - float vibrated_freq = average_freq * pow(VIBRATO_LUT[(int)vibrato_counter], vibrato_strength); + float vibrated_freq = average_freq * pow(vibrato_lut[(int)vibrato_counter], vibrato_strength); #else - float vibrated_freq = average_freq * VIBRATO_LUT[(int)vibrato_counter]; + 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; @@ -299,295 +180,299 @@ float vibrato(float average_freq) { #endif -ISR(TIMER3_COMPA_vect) { - if (note) { - #ifdef PWM_AUDIO - if (voices == 1) { - // SINE - OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 2; - - // SQUARE - // if (((int)place) >= 1024){ - // OCR4A = 0xFF >> 2; - // } else { - // OCR4A = 0x00; - // } - - // SAWTOOTH - // OCR4A = (int)place / 4; - - // TRIANGLE - // if (((int)place) >= 1024) { - // OCR4A = (int)place / 2; - // } else { - // OCR4A = 2048 - (int)place / 2; - // } - - place += frequency; - - if (place >= SINE_LENGTH) - place -= SINE_LENGTH; - - } else { - int sum = 0; - for (int i = 0; i < voices; i++) { - // SINE - sum += pgm_read_byte(&sinewave[(uint16_t)places[i]]) >> 2; - - // SQUARE - // if (((int)places[i]) >= 1024){ - // sum += 0xFF >> 2; - // } else { - // sum += 0x00; - // } - - places[i] += frequencies[i]; - - if (places[i] >= SINE_LENGTH) - places[i] -= SINE_LENGTH; - } - OCR4A = sum; - } - #else - if (voices > 0) { - float freq; - if (polyphony_rate > 0) { - if (voices > 1) { - voice_place %= voices; - if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) { - voice_place = (voice_place + 1) % voices; - place = 0.0; - } - } - #ifdef VIBRATO_ENABLE - if (vibrato_strength > 0) { - freq = vibrato(frequencies[voice_place]); - } else { - #else - { - #endif - freq = frequencies[voice_place]; - } - } 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 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]; - } - - - #ifdef VIBRATO_ENABLE - if (vibrato_strength > 0) { - freq = vibrato(frequency); - } else { - #else - { - #endif - freq = frequency; - } - } +ISR(TIMER3_COMPA_vect) +{ + float freq; + + if (playing_note) { + if (voices > 0) { + if (polyphony_rate > 0) { + if (voices > 1) { + voice_place %= voices; + if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) { + 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 (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]; + } + + #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; + } + + TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER)); + TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * 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); + + TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER)); + TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); + } else { + TIMER_3_PERIOD = 0; + TIMER_3_DUTY_CYCLE = 0; + } + + note_position++; + bool end_of_note = false; + if (TIMER_3_PERIOD > 0) { + end_of_note = (note_position >= (note_length / TIMER_3_PERIOD * 0xFFFF)); + } else { + end_of_note = (note_position >= (note_length * 0x7FF)); + } + + if (end_of_note) { + current_note++; + if (current_note >= notes_count) { + if (notes_repeat) { + current_note = 0; + } else { + DISABLE_AUDIO_COUNTER_3_ISR; + DISABLE_AUDIO_COUNTER_3_OUTPUT; + playing_notes = false; + return; + } + } + if (!note_resting && (notes_rest > 0)) { + note_resting = true; + note_frequency = 0; + note_length = notes_rest; + current_note--; + } 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; + } +} - if (envelope_index < 65535) { - envelope_index++; - } - freq = voice_envelope(freq); +void play_note(float freq, int vol) { - if (freq < 30.517578125) - freq = 30.52; - ICR3 = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period - OCR3A = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period - } - #endif + if (!audio_initialized) { + audio_init(); } - // SAMPLE - // OCR4A = pgm_read_byte(&sample[(uint16_t)place_int]); - - // place_int++; - - // if (place_int >= sample_length) - // if (repeat) - // place_int -= sample_length; - // else - // TIMSK3 &= ~_BV(OCIE3A); - - - if (notes) { - #ifdef PWM_AUDIO - OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 0; - - place += note_frequency; - if (place >= SINE_LENGTH) - place -= SINE_LENGTH; - #else - if (note_frequency > 0) { - float freq; - - #ifdef VIBRATO_ENABLE - if (vibrato_strength > 0) { - freq = vibrato(note_frequency); - } else { - #else - { - #endif - freq = note_frequency; - } + if (audio_config.enable && voices < 8) { + DISABLE_AUDIO_COUNTER_3_ISR; - if (envelope_index < 65535) { - envelope_index++; - } - freq = voice_envelope(freq); + // Cancel notes if notes are playing + if (playing_notes) + stop_all_notes(); - ICR3 = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period - OCR3A = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period - } else { - ICR3 = 0; - OCR3A = 0; - } - #endif - - - note_position++; - bool end_of_note = false; - if (ICR3 > 0) - end_of_note = (note_position >= (note_length / ICR3 * 0xFFFF)); - else - end_of_note = (note_position >= (note_length * 0x7FF)); - if (end_of_note) { - current_note++; - if (current_note >= notes_count) { - if (notes_repeat) { - current_note = 0; - } else { - #ifdef PWM_AUDIO - TIMSK3 &= ~_BV(OCIE3A); - #else - TIMSK3 &= ~_BV(OCIE3A); - TCCR3A &= ~_BV(COM3A1); - #endif - notes = false; - return; - } - } - if (!note_resting && (notes_rest > 0)) { - note_resting = true; - note_frequency = 0; - note_length = notes_rest; - current_note--; - } else { - note_resting = false; - #ifdef PWM_AUDIO - note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE; - note_length = (*notes_pointer)[current_note][1] * (note_tempo / 100); - #else - envelope_index = 0; - note_frequency = (*notes_pointer)[current_note][0]; - note_length = ((*notes_pointer)[current_note][1] / 4) * (note_tempo / 100); - #endif - } - note_position = 0; - } + playing_note = true; - } + envelope_index = 0; + + if (freq > 0) { + frequencies[voices] = freq; + volumes[voices] = vol; + voices++; + } + + ENABLE_AUDIO_COUNTER_3_ISR; + ENABLE_AUDIO_COUNTER_3_OUTPUT; + } - if (!audio_config.enable) { - notes = false; - note = false; - } } -void play_note(float freq, int vol) { +void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest) +{ - if (!inited) { + if (!audio_initialized) { audio_init(); } -if (audio_config.enable && voices < 8) { - TIMSK3 &= ~_BV(OCIE3A); - // Cancel notes if notes are playing - if (notes) - stop_all_notes(); - note = true; - envelope_index = 0; - #ifdef PWM_AUDIO - freq = freq / SAMPLE_RATE; - #endif - if (freq > 0) { - frequencies[voices] = freq; - volumes[voices] = vol; - voices++; - } + if (audio_config.enable) { + + DISABLE_AUDIO_COUNTER_3_ISR; + + // 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; + notes_rest = n_rest; + + 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; + + + ENABLE_AUDIO_COUNTER_3_ISR; + ENABLE_AUDIO_COUNTER_3_OUTPUT; + } - #ifdef PWM_AUDIO - TIMSK3 |= _BV(OCIE3A); - #else - TIMSK3 |= _BV(OCIE3A); - TCCR3A |= _BV(COM3A1); - #endif } +bool is_playing_notes(void) { + return playing_notes; } -void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest) { +bool is_audio_on(void) { + return (audio_config.enable != 0); +} - if (!inited) { - audio_init(); - } +void audio_toggle(void) { + audio_config.enable ^= 1; + eeconfig_update_audio(audio_config.raw); +} -if (audio_config.enable) { - TIMSK3 &= ~_BV(OCIE3A); - // Cancel note if a note is playing - if (note) - stop_all_notes(); - notes = true; - - notes_pointer = np; - notes_count = n_count; - notes_repeat = n_repeat; - notes_rest = n_rest; - - place = 0; - current_note = 0; - #ifdef PWM_AUDIO - note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE; - note_length = (*notes_pointer)[current_note][1] * (note_tempo / 100); - #else - note_frequency = (*notes_pointer)[current_note][0]; - note_length = ((*notes_pointer)[current_note][1] / 4) * (note_tempo / 100); - #endif - note_position = 0; +void audio_on(void) { + audio_config.enable = 1; + eeconfig_update_audio(audio_config.raw); +} + +void audio_off(void) { + audio_config.enable = 0; + eeconfig_update_audio(audio_config.raw); +} +#ifdef VIBRATO_ENABLE - #ifdef PWM_AUDIO - TIMSK3 |= _BV(OCIE3A); - #else - TIMSK3 |= _BV(OCIE3A); - TCCR3A |= _BV(COM3A1); - #endif +// Vibrato rate functions + +void set_vibrato_rate(float rate) { + vibrato_rate = rate; } +void increase_vibrato_rate(float change) { + vibrato_rate *= change; } -#ifdef PWM_AUDIO -void play_sample(uint8_t * s, uint16_t l, bool r) { - if (!inited) { - audio_init(); - } +void decrease_vibrato_rate(float change) { + vibrato_rate /= change; +} - if (audio_config.enable) { - TIMSK3 &= ~_BV(OCIE3A); - stop_all_notes(); - place_int = 0; - sample = s; - sample_length = l; - repeat = r; +#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 */ - TIMSK3 |= _BV(OCIE3A); +// 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; } } -#endif + //------------------------------------------------------------------------------ // Override these functions in your keymap file to play different tunes on @@ -597,11 +482,8 @@ void play_startup_tone() { } - - __attribute__ ((weak)) void play_goodbye_tone() { - } //------------------------------------------------------------------------------ diff --git a/quantum/audio/audio.h b/quantum/audio/audio.h index 89769507e..4ba879bbb 100644 --- a/quantum/audio/audio.h +++ b/quantum/audio/audio.h @@ -25,6 +25,7 @@ typedef union { }; } audio_config_t; +bool is_audio_on(void); void audio_toggle(void); void audio_on(void); void audio_off(void); @@ -56,7 +57,7 @@ void increase_polyphony_rate(float change); void decrease_polyphony_rate(float change); void set_timbre(float timbre); -void set_tempo(float tempo); +void set_tempo(uint8_t tempo); void increase_tempo(uint8_t tempo_change); void decrease_tempo(uint8_t tempo_change); @@ -71,11 +72,11 @@ void stop_note(float freq); void stop_all_notes(void); void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest); -#define SCALE (int []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \ - 0 + (12*1), 2 + (12*1), 4 + (12*1), 5 + (12*1), 7 + (12*1), 9 + (12*1), 11 + (12*1), \ - 0 + (12*2), 2 + (12*2), 4 + (12*2), 5 + (12*2), 7 + (12*2), 9 + (12*2), 11 + (12*2), \ - 0 + (12*3), 2 + (12*3), 4 + (12*3), 5 + (12*3), 7 + (12*3), 9 + (12*3), 11 + (12*3), \ - 0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), } +#define SCALE (int8_t []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \ + 0 + (12*1), 2 + (12*1), 4 + (12*1), 5 + (12*1), 7 + (12*1), 9 + (12*1), 11 + (12*1), \ + 0 + (12*2), 2 + (12*2), 4 + (12*2), 5 + (12*2), 7 + (12*2), 9 + (12*2), 11 + (12*2), \ + 0 + (12*3), 2 + (12*3), 4 + (12*3), 5 + (12*3), 7 + (12*3), 9 + (12*3), 11 + (12*3), \ + 0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), } // These macros are used to allow play_notes to play an array of indeterminate // length. This works around the limitation of C's sizeof operation on pointers. @@ -83,7 +84,11 @@ void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest) #define NOTE_ARRAY_SIZE(x) ((int16_t)(sizeof(x) / (sizeof(x[0])))) #define PLAY_NOTE_ARRAY(note_array, note_repeat, note_rest_style) play_notes(¬e_array, NOTE_ARRAY_SIZE((note_array)), (note_repeat), (note_rest_style)); + +bool is_playing_notes(void); void play_goodbye_tone(void); void play_startup_tone(void); + + #endif
\ No newline at end of file diff --git a/quantum/audio/audio_pwm.c b/quantum/audio/audio_pwm.c new file mode 100644 index 000000000..328a253a7 --- /dev/null +++ b/quantum/audio/audio_pwm.c @@ -0,0 +1,643 @@ +#include <stdio.h> +#include <string.h> +//#include <math.h> +#include <avr/pgmspace.h> +#include <avr/interrupt.h> +#include <avr/io.h> +#include "print.h" +#include "audio.h" +#include "keymap_common.h" + +#include "eeconfig.h" + +#define PI 3.14159265 + +#define CPU_PRESCALER 8 + + +// Timer Abstractions + +// TIMSK3 - Timer/Counter #3 Interrupt Mask Register +// Turn on/off 3A interputs, stopping/enabling the ISR calls +#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A) +#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A) + + +// TCCR3A: Timer/Counter #3 Control Register +// Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6 +#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1); +#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0)); + + +#define NOTE_PERIOD ICR3 +#define NOTE_DUTY_CYCLE OCR3A + + +#ifdef PWM_AUDIO + #include "wave.h" + #define SAMPLE_DIVIDER 39 + #define SAMPLE_RATE (2000000.0/SAMPLE_DIVIDER/2048) + // Resistor value of 1/ (2 * PI * 10nF * (2000000 hertz / SAMPLE_DIVIDER / 10)) for 10nF cap + + float places[8] = {0, 0, 0, 0, 0, 0, 0, 0}; + uint16_t place_int = 0; + bool repeat = true; +#endif + +void delay_us(int count) { + while(count--) { + _delay_us(1); + } +} + +int voices = 0; +int voice_place = 0; +float frequency = 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; +// float freq = 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; +float notes_rest; +bool note_resting = false; + +uint8_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; + +void audio_init() { + + // Check EEPROM + if (!eeconfig_is_enabled()) + { + eeconfig_init(); + } + audio_config.raw = eeconfig_read_audio(); + + #ifdef PWM_AUDIO + + PLLFRQ = _BV(PDIV2); + PLLCSR = _BV(PLLE); + while(!(PLLCSR & _BV(PLOCK))); + PLLFRQ |= _BV(PLLTM0); /* PCK 48MHz */ + + /* Init a fast PWM on Timer4 */ + TCCR4A = _BV(COM4A0) | _BV(PWM4A); /* Clear OC4A on Compare Match */ + TCCR4B = _BV(CS40); /* No prescaling => f = PCK/256 = 187500Hz */ + OCR4A = 0; + + /* Enable the OC4A output */ + DDRC |= _BV(PORTC6); + + DISABLE_AUDIO_COUNTER_3_ISR; // Turn off 3A interputs + + TCCR3A = 0x0; // Options not needed + TCCR3B = _BV(CS31) | _BV(CS30) | _BV(WGM32); // 64th prescaling and CTC + OCR3A = SAMPLE_DIVIDER - 1; // Correct count/compare, related to sample playback + + #else + + // Set port PC6 (OC3A and /OC4A) as output + DDRC |= _BV(PORTC6); + + DISABLE_AUDIO_COUNTER_3_ISR; + + // TCCR3A / TCCR3B: Timer/Counter #3 Control Registers + // Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6 + // Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14 (Period = ICR3, Duty Cycle = OCR3A) + // Clock Select (CS3n) = 0b010 = Clock / 8 + TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30); + TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30); + + #endif + + audio_initialized = true; +} + +void stop_all_notes() { + if (!audio_initialized) { + audio_init(); + } + voices = 0; + #ifdef PWM_AUDIO + DISABLE_AUDIO_COUNTER_3_ISR; + #else + DISABLE_AUDIO_COUNTER_3_ISR; + DISABLE_AUDIO_COUNTER_3_OUTPUT; + #endif + + playing_notes = false; + playing_note = false; + frequency = 0; + volume = 0; + + for (uint8_t i = 0; i < 8; i++) + { + frequencies[i] = 0; + volumes[i] = 0; + } +} + +void stop_note(float freq) +{ + if (playing_note) { + if (!audio_initialized) { + audio_init(); + } + #ifdef PWM_AUDIO + freq = freq / SAMPLE_RATE; + #endif + 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) { + #ifdef PWM_AUDIO + DISABLE_AUDIO_COUNTER_3_ISR; + #else + DISABLE_AUDIO_COUNTER_3_ISR; + DISABLE_AUDIO_COUNTER_3_OUTPUT; + #endif + frequency = 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 + +ISR(TIMER3_COMPA_vect) +{ + if (playing_note) { + #ifdef PWM_AUDIO + if (voices == 1) { + // SINE + OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 2; + + // SQUARE + // if (((int)place) >= 1024){ + // OCR4A = 0xFF >> 2; + // } else { + // OCR4A = 0x00; + // } + + // SAWTOOTH + // OCR4A = (int)place / 4; + + // TRIANGLE + // if (((int)place) >= 1024) { + // OCR4A = (int)place / 2; + // } else { + // OCR4A = 2048 - (int)place / 2; + // } + + place += frequency; + + if (place >= SINE_LENGTH) + place -= SINE_LENGTH; + + } else { + int sum = 0; + for (int i = 0; i < voices; i++) { + // SINE + sum += pgm_read_byte(&sinewave[(uint16_t)places[i]]) >> 2; + + // SQUARE + // if (((int)places[i]) >= 1024){ + // sum += 0xFF >> 2; + // } else { + // sum += 0x00; + // } + + places[i] += frequencies[i]; + + if (places[i] >= SINE_LENGTH) + places[i] -= SINE_LENGTH; + } + OCR4A = sum; + } + #else + if (voices > 0) { + float freq; + if (polyphony_rate > 0) { + if (voices > 1) { + voice_place %= voices; + if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) { + voice_place = (voice_place + 1) % voices; + place = 0.0; + } + } + #ifdef VIBRATO_ENABLE + if (vibrato_strength > 0) { + freq = vibrato(frequencies[voice_place]); + } else { + #else + { + #endif + freq = frequencies[voice_place]; + } + } 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 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]; + } + + + #ifdef VIBRATO_ENABLE + if (vibrato_strength > 0) { + freq = vibrato(frequency); + } else { + #else + { + #endif + freq = frequency; + } + } + + if (envelope_index < 65535) { + envelope_index++; + } + freq = voice_envelope(freq); + + if (freq < 30.517578125) + freq = 30.52; + NOTE_PERIOD = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period + NOTE_DUTY_CYCLE = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period + } + #endif + } + + // SAMPLE + // OCR4A = pgm_read_byte(&sample[(uint16_t)place_int]); + + // place_int++; + + // if (place_int >= sample_length) + // if (repeat) + // place_int -= sample_length; + // else + // DISABLE_AUDIO_COUNTER_3_ISR; + + + if (playing_notes) { + #ifdef PWM_AUDIO + OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 0; + + place += note_frequency; + if (place >= SINE_LENGTH) + place -= SINE_LENGTH; + #else + if (note_frequency > 0) { + float freq; + + #ifdef VIBRATO_ENABLE + if (vibrato_strength > 0) { + freq = vibrato(note_frequency); + } else { + #else + { + #endif + freq = note_frequency; + } + + if (envelope_index < 65535) { + envelope_index++; + } + freq = voice_envelope(freq); + + NOTE_PERIOD = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period + NOTE_DUTY_CYCLE = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period + } else { + NOTE_PERIOD = 0; + NOTE_DUTY_CYCLE = 0; + } + #endif + + + note_position++; + bool end_of_note = false; + if (NOTE_PERIOD > 0) + end_of_note = (note_position >= (note_length / NOTE_PERIOD * 0xFFFF)); + else + end_of_note = (note_position >= (note_length * 0x7FF)); + if (end_of_note) { + current_note++; + if (current_note >= notes_count) { + if (notes_repeat) { + current_note = 0; + } else { + #ifdef PWM_AUDIO + DISABLE_AUDIO_COUNTER_3_ISR; + #else + DISABLE_AUDIO_COUNTER_3_ISR; + DISABLE_AUDIO_COUNTER_3_OUTPUT; + #endif + playing_notes = false; + return; + } + } + if (!note_resting && (notes_rest > 0)) { + note_resting = true; + note_frequency = 0; + note_length = notes_rest; + current_note--; + } else { + note_resting = false; + #ifdef PWM_AUDIO + note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE; + note_length = (*notes_pointer)[current_note][1] * (((float)note_tempo) / 100); + #else + envelope_index = 0; + note_frequency = (*notes_pointer)[current_note][0]; + note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100); + #endif + } + note_position = 0; + } + + } + + if (!audio_config.enable) { + playing_notes = false; + playing_note = false; + } +} + +void play_note(float freq, int vol) { + + if (!audio_initialized) { + audio_init(); + } + + if (audio_config.enable && voices < 8) { + DISABLE_AUDIO_COUNTER_3_ISR; + + // Cancel notes if notes are playing + if (playing_notes) + stop_all_notes(); + + playing_note = true; + + envelope_index = 0; + + #ifdef PWM_AUDIO + freq = freq / SAMPLE_RATE; + #endif + if (freq > 0) { + frequencies[voices] = freq; + volumes[voices] = vol; + voices++; + } + + #ifdef PWM_AUDIO + ENABLE_AUDIO_COUNTER_3_ISR; + #else + ENABLE_AUDIO_COUNTER_3_ISR; + ENABLE_AUDIO_COUNTER_3_OUTPUT; + #endif + } + +} + +void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest) +{ + + if (!audio_initialized) { + audio_init(); + } + + if (audio_config.enable) { + + DISABLE_AUDIO_COUNTER_3_ISR; + + // 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; + notes_rest = n_rest; + + place = 0; + current_note = 0; + + #ifdef PWM_AUDIO + note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE; + note_length = (*notes_pointer)[current_note][1] * (((float)note_tempo) / 100); + #else + note_frequency = (*notes_pointer)[current_note][0]; + note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100); + #endif + note_position = 0; + + + #ifdef PWM_AUDIO + ENABLE_AUDIO_COUNTER_3_ISR; + #else + ENABLE_AUDIO_COUNTER_3_ISR; + ENABLE_AUDIO_COUNTER_3_OUTPUT; + #endif + } + +} + +#ifdef PWM_AUDIO +void play_sample(uint8_t * s, uint16_t l, bool r) { + if (!audio_initialized) { + audio_init(); + } + + if (audio_config.enable) { + DISABLE_AUDIO_COUNTER_3_ISR; + stop_all_notes(); + place_int = 0; + sample = s; + sample_length = l; + repeat = r; + + ENABLE_AUDIO_COUNTER_3_ISR; + } +} +#endif + + +void audio_toggle(void) { + audio_config.enable ^= 1; + eeconfig_update_audio(audio_config.raw); +} + +void audio_on(void) { + audio_config.enable = 1; + eeconfig_update_audio(audio_config.raw); +} + +void audio_off(void) { + 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; + } +} + + +//------------------------------------------------------------------------------ +// Override these functions in your keymap file to play different tunes on +// startup and bootloader jump +__attribute__ ((weak)) +void play_startup_tone() +{ +} + +__attribute__ ((weak)) +void play_goodbye_tone() +{ +} +//------------------------------------------------------------------------------ diff --git a/quantum/audio/luts.c b/quantum/audio/luts.c new file mode 100644 index 000000000..9f3de9a05 --- /dev/null +++ b/quantum/audio/luts.c @@ -0,0 +1,382 @@ +#include <avr/io.h> +#include <avr/interrupt.h> +#include <avr/pgmspace.h> +#include "luts.h" + +const float vibrato_lut[VIBRATO_LUT_LENGTH] = +{ + 1.0022336811487, + 1.0042529943610, + 1.0058584256028, + 1.0068905285205, + 1.0072464122237, + 1.0068905285205, + 1.0058584256028, + 1.0042529943610, + 1.0022336811487, + 1.0000000000000, + 0.9977712970630, + 0.9957650169978, + 0.9941756956510, + 0.9931566259436, + 0.9928057204913, + 0.9931566259436, + 0.9941756956510, + 0.9957650169978, + 0.9977712970630, + 1.0000000000000, +}; + +const uint16_t frequency_lut[FREQUENCY_LUT_LENGTH] = +{ + 0x8E0B, + 0x8C02, + 0x8A00, + 0x8805, + 0x8612, + 0x8426, + 0x8241, + 0x8063, + 0x7E8C, + 0x7CBB, + 0x7AF2, + 0x792E, + 0x7772, + 0x75BB, + 0x740B, + 0x7261, + 0x70BD, + 0x6F20, + 0x6D88, + 0x6BF6, + 0x6A69, + 0x68E3, + 0x6762, + 0x65E6, + 0x6470, + 0x6300, + 0x6194, + 0x602E, + 0x5ECD, + 0x5D71, + 0x5C1A, + 0x5AC8, + 0x597B, + 0x5833, + 0x56EF, + 0x55B0, + 0x5475, + 0x533F, + 0x520E, + 0x50E1, + 0x4FB8, + 0x4E93, + 0x4D73, + 0x4C57, + 0x4B3E, + 0x4A2A, + 0x491A, + 0x480E, + 0x4705, + 0x4601, + 0x4500, + 0x4402, + 0x4309, + 0x4213, + 0x4120, + 0x4031, + 0x3F46, + 0x3E5D, + 0x3D79, + 0x3C97, + 0x3BB9, + 0x3ADD, + 0x3A05, + 0x3930, + 0x385E, + 0x3790, + 0x36C4, + 0x35FB, + 0x3534, + 0x3471, + 0x33B1, + 0x32F3, + 0x3238, + 0x3180, + 0x30CA, + 0x3017, + 0x2F66, + 0x2EB8, + 0x2E0D, + 0x2D64, + 0x2CBD, + 0x2C19, + 0x2B77, + 0x2AD8, + 0x2A3A, + 0x299F, + 0x2907, + 0x2870, + 0x27DC, + 0x2749, + 0x26B9, + 0x262B, + 0x259F, + 0x2515, + 0x248D, + 0x2407, + 0x2382, + 0x2300, + 0x2280, + 0x2201, + 0x2184, + 0x2109, + 0x2090, + 0x2018, + 0x1FA3, + 0x1F2E, + 0x1EBC, + 0x1E4B, + 0x1DDC, + 0x1D6E, + 0x1D02, + 0x1C98, + 0x1C2F, + 0x1BC8, + 0x1B62, + 0x1AFD, + 0x1A9A, + 0x1A38, + 0x19D8, + 0x1979, + 0x191C, + 0x18C0, + 0x1865, + 0x180B, + 0x17B3, + 0x175C, + 0x1706, + 0x16B2, + 0x165E, + 0x160C, + 0x15BB, + 0x156C, + 0x151D, + 0x14CF, + 0x1483, + 0x1438, + 0x13EE, + 0x13A4, + 0x135C, + 0x1315, + 0x12CF, + 0x128A, + 0x1246, + 0x1203, + 0x11C1, + 0x1180, + 0x1140, + 0x1100, + 0x10C2, + 0x1084, + 0x1048, + 0x100C, + 0xFD1, + 0xF97, + 0xF5E, + 0xF25, + 0xEEE, + 0xEB7, + 0xE81, + 0xE4C, + 0xE17, + 0xDE4, + 0xDB1, + 0xD7E, + 0xD4D, + 0xD1C, + 0xCEC, + 0xCBC, + 0xC8E, + 0xC60, + 0xC32, + 0xC05, + 0xBD9, + 0xBAE, + 0xB83, + 0xB59, + 0xB2F, + 0xB06, + 0xADD, + 0xAB6, + 0xA8E, + 0xA67, + 0xA41, + 0xA1C, + 0x9F7, + 0x9D2, + 0x9AE, + 0x98A, + 0x967, + 0x945, + 0x923, + 0x901, + 0x8E0, + 0x8C0, + 0x8A0, + 0x880, + 0x861, + 0x842, + 0x824, + 0x806, + 0x7E8, + 0x7CB, + 0x7AF, + 0x792, + 0x777, + 0x75B, + 0x740, + 0x726, + 0x70B, + 0x6F2, + 0x6D8, + 0x6BF, + 0x6A6, + 0x68E, + 0x676, + 0x65E, + 0x647, + 0x630, + 0x619, + 0x602, + 0x5EC, + 0x5D7, + 0x5C1, + 0x5AC, + 0x597, + 0x583, + 0x56E, + 0x55B, + 0x547, + 0x533, + 0x520, + 0x50E, + 0x4FB, + 0x4E9, + 0x4D7, + 0x4C5, + 0x4B3, + 0x4A2, + 0x491, + 0x480, + 0x470, + 0x460, + 0x450, + 0x440, + 0x430, + 0x421, + 0x412, + 0x403, + 0x3F4, + 0x3E5, + 0x3D7, + 0x3C9, + 0x3BB, + 0x3AD, + 0x3A0, + 0x393, + 0x385, + 0x379, + 0x36C, + 0x35F, + 0x353, + 0x347, + 0x33B, + 0x32F, + 0x323, + 0x318, + 0x30C, + 0x301, + 0x2F6, + 0x2EB, + 0x2E0, + 0x2D6, + 0x2CB, + 0x2C1, + 0x2B7, + 0x2AD, + 0x2A3, + 0x299, + 0x290, + 0x287, + 0x27D, + 0x274, + 0x26B, + 0x262, + 0x259, + 0x251, + 0x248, + 0x240, + 0x238, + 0x230, + 0x228, + 0x220, + 0x218, + 0x210, + 0x209, + 0x201, + 0x1FA, + 0x1F2, + 0x1EB, + 0x1E4, + 0x1DD, + 0x1D6, + 0x1D0, + 0x1C9, + 0x1C2, + 0x1BC, + 0x1B6, + 0x1AF, + 0x1A9, + 0x1A3, + 0x19D, + 0x197, + 0x191, + 0x18C, + 0x186, + 0x180, + 0x17B, + 0x175, + 0x170, + 0x16B, + 0x165, + 0x160, + 0x15B, + 0x156, + 0x151, + 0x14C, + 0x148, + 0x143, + 0x13E, + 0x13A, + 0x135, + 0x131, + 0x12C, + 0x128, + 0x124, + 0x120, + 0x11C, + 0x118, + 0x114, + 0x110, + 0x10C, + 0x108, + 0x104, + 0x100, + 0xFD, + 0xF9, + 0xF5, + 0xF2, + 0xEE, +}; + diff --git a/quantum/audio/luts.h b/quantum/audio/luts.h new file mode 100644 index 000000000..7df3078a7 --- /dev/null +++ b/quantum/audio/luts.h @@ -0,0 +1,15 @@ +#include <avr/io.h> +#include <avr/interrupt.h> +#include <avr/pgmspace.h> + +#ifndef LUTS_H +#define LUTS_H + +#define VIBRATO_LUT_LENGTH 20 + +#define FREQUENCY_LUT_LENGTH 349 + +extern const float vibrato_lut[VIBRATO_LUT_LENGTH]; +extern const uint16_t frequency_lut[FREQUENCY_LUT_LENGTH]; + +#endif /* LUTS_H */
\ No newline at end of file diff --git a/quantum/audio/vibrato_lut.h b/quantum/audio/vibrato_lut.h deleted file mode 100644 index a2b1f3e5c..000000000 --- a/quantum/audio/vibrato_lut.h +++ /dev/null @@ -1,28 +0,0 @@ -#include <avr/io.h> -#include <avr/interrupt.h> -#include <avr/pgmspace.h> - -#define VIBRATO_LUT_LENGTH 20 - -const float VIBRATO_LUT[VIBRATO_LUT_LENGTH] = { \ -1.00223368114872, -1.00425299436105, -1.00585842560279, -1.00689052852052, -1.0072464122237, -1.00689052852052, -1.00585842560279, -1.00425299436105, -1.00223368114872, -1, -0.99777129706302, -0.99576501699778, -0.994175695650927, -0.993156625943589, -0.992805720491269, -0.993156625943589, -0.994175695650927, -0.99576501699778, -0.99777129706302, -1 -};
\ No newline at end of file diff --git a/quantum/audio/voices.c b/quantum/audio/voices.c index de9f8ae54..6d4172a06 100644 --- a/quantum/audio/voices.c +++ b/quantum/audio/voices.c @@ -1,4 +1,5 @@ #include "voices.h" +#include "audio.h" #include "stdlib.h" // these are imported from audio.c @@ -53,28 +54,28 @@ float voice_envelope(float frequency) { } break; - case octave_crunch: - polyphony_rate = 0; - switch (compensated_index) { - case 0 ... 9: - case 20 ... 24: - case 30 ... 32: - frequency = frequency / 2; - note_timbre = TIMBRE_12; - break; - - case 10 ... 19: - case 25 ... 29: - case 33 ... 35: - frequency = frequency * 2; - note_timbre = TIMBRE_12; - break; - - default: - note_timbre = TIMBRE_12; - break; - } - break; + // case octave_crunch: + // polyphony_rate = 0; + // switch (compensated_index) { + // case 0 ... 9: + // case 20 ... 24: + // case 30 ... 32: + // frequency = frequency / 2; + // note_timbre = TIMBRE_12; + // break; + + // case 10 ... 19: + // case 25 ... 29: + // case 33 ... 35: + // frequency = frequency * 2; + // note_timbre = TIMBRE_12; + // break; + + // default: + // note_timbre = TIMBRE_12; + // break; + // } + // break; case duty_osc: // This slows the loop down a substantial amount, so higher notes may freeze @@ -99,6 +100,36 @@ float voice_envelope(float frequency) { if ((envelope_index % 8) == 0) note_timbre = 0; break; + case delayed_vibrato: + polyphony_rate = 0; + note_timbre = TIMBRE_50; + #define VOICE_VIBRATO_DELAY 150 + #define VOICE_VIBRATO_SPEED 50 + switch (compensated_index) { + case 0 ... VOICE_VIBRATO_DELAY: + break; + default: + frequency = frequency * vibrato_lut[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1))/1000*VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)]; + break; + } + break; + // case delayed_vibrato_octave: + // polyphony_rate = 0; + // if ((envelope_index % 2) == 1) { + // note_timbre = 0.55; + // } else { + // note_timbre = 0.45; + // } + // #define VOICE_VIBRATO_DELAY 150 + // #define VOICE_VIBRATO_SPEED 50 + // switch (compensated_index) { + // case 0 ... VOICE_VIBRATO_DELAY: + // break; + // default: + // frequency = frequency * VIBRATO_LUT[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1))/1000*VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)]; + // break; + // } + // break; // case duty_fifth_down: // note_timbre = 0.5; // if ((envelope_index % 3) == 0) @@ -129,4 +160,6 @@ float voice_envelope(float frequency) { } return frequency; -}
\ No newline at end of file +} + + diff --git a/quantum/audio/voices.h b/quantum/audio/voices.h index 4b894f28d..b2495b23b 100644 --- a/quantum/audio/voices.h +++ b/quantum/audio/voices.h @@ -2,8 +2,7 @@ #include <stdbool.h> #include <avr/io.h> #include <util/delay.h> -#include "musical_notes.h" -#include "song_list.h" +#include "luts.h" #ifndef VOICES_H #define VOICES_H @@ -16,6 +15,8 @@ typedef enum { octave_crunch, duty_osc, duty_octave_down, + delayed_vibrato, + // delayed_vibrato_octave, // duty_fifth_down, // duty_fourth_down, // duty_third_down, |