ui_keyboard_app.h

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#ifndef BRICK_UI_KEYBOARD_APP_H
#define BRICK_UI_KEYBOARD_APP_H
 
#include <stdint.h>
#include <stdbool.h>
 
typedef enum {
  KBD_SCALE_MAJOR = 0,
  KBD_SCALE_NAT_MINOR,
  KBD_SCALE_DORIAN,
  KBD_SCALE_MIXOLYDIAN,
  KBD_SCALE_PENT_MAJOR,
  KBD_SCALE_PENT_MINOR,
  KBD_SCALE_CHROMATIC
} kbd_scale_t;
 
typedef enum {
  NOTE_ORDER_NATURAL = 0,  
  NOTE_ORDER_FIFTHS  = 1   
} note_order_t;
 
#define CUSTOM_KEYS_OCT_SHIFT_MIN   (-4)
#define CUSTOM_KEYS_OCT_SHIFT_MAX   (+4)
 
typedef struct {
  bool    valid;            
  uint8_t root_midi;        
  uint8_t intervals[12];    
  uint8_t interval_count;   
} ui_keyboard_active_chord_t;
 
typedef void (*ui_keyboard_chord_cb_t)(const ui_keyboard_active_chord_t *chord);
 
typedef struct {
  void (*note_on)(uint8_t ch, uint8_t note, uint8_t vel);
  void (*note_off)(uint8_t ch, uint8_t note, uint8_t vel);
  void (*all_notes_off)(uint8_t ch);
  uint8_t midi_channel;
  uint8_t velocity;
} ui_keyboard_note_sink_t;
 
void ui_keyboard_app_init(const ui_keyboard_note_sink_t *sink);
 
void ui_keyboard_app_set_params(uint8_t root_midi, kbd_scale_t scale, bool omnichord);
 
void ui_keyboard_app_set_observer(ui_keyboard_chord_cb_t cb);
 
void ui_keyboard_app_set_note_order(note_order_t order);
 
void ui_keyboard_app_set_chord_override(bool enable);
 
/* === Octave shift (Custom Keys) ========================================= */
 
void ui_keyboard_app_set_octave_shift(int8_t shift);
 
int8_t ui_keyboard_app_get_octave_shift(void);
 
/* === Entrées (pads / chord buttons) ===================================== */
 
void ui_keyboard_app_note_button(uint8_t note_slot, bool pressed);
 
void ui_keyboard_app_chord_button(uint8_t chord_index, bool pressed);
 
void ui_keyboard_app_all_notes_off(void);
 
const ui_keyboard_active_chord_t *ui_keyboard_app_get_active_chord(void);
 
void ui_keyboard_app_tick(uint32_t elapsed_ms);
 
#endif /* BRICK_UI_KEYBOARD_APP_H */