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Diffstat (limited to 'quantum/audio/audio.h')
| -rw-r--r-- | quantum/audio/audio.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/quantum/audio/audio.h b/quantum/audio/audio.h new file mode 100644 index 0000000000..47f326ea0a --- /dev/null +++ b/quantum/audio/audio.h @@ -0,0 +1,91 @@ +#ifndef AUDIO_H +#define AUDIO_H + +#include <stdint.h> +#include <stdbool.h> +#include <avr/io.h> +#include <util/delay.h> +#include "musical_notes.h" +#include "song_list.h" +#include "voices.h" +#include "quantum.h" + +// Largely untested PWM audio mode (doesn't sound as good) +// #define PWM_AUDIO + +// #define VIBRATO_ENABLE + +// Enable vibrato strength/amplitude - slows down ISR too much +// #define VIBRATO_STRENGTH_ENABLE + +typedef union { + uint8_t raw; + struct { + bool enable :1; + uint8_t level :7; + }; +} audio_config_t; + +bool is_audio_on(void); +void audio_toggle(void); +void audio_on(void); +void audio_off(void); + +// Vibrato rate functions + +#ifdef VIBRATO_ENABLE + +void set_vibrato_rate(float rate); +void increase_vibrato_rate(float change); +void decrease_vibrato_rate(float change); + +#ifdef VIBRATO_STRENGTH_ENABLE + +void set_vibrato_strength(float strength); +void increase_vibrato_strength(float change); +void decrease_vibrato_strength(float change); + +#endif + +#endif + +// Polyphony functions + +void set_polyphony_rate(float rate); +void enable_polyphony(void); +void disable_polyphony(void); +void increase_polyphony_rate(float change); +void decrease_polyphony_rate(float change); + +void set_timbre(float timbre); +void set_tempo(uint8_t tempo); + +void increase_tempo(uint8_t tempo_change); +void decrease_tempo(uint8_t tempo_change); + +void audio_init(void); + +#ifdef PWM_AUDIO +void play_sample(uint8_t * s, uint16_t l, bool r); +#endif +void play_note(float freq, int vol); +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 (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. +// The global float array for the song must be used here. +#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); + +#endif
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