tunes.h

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#pragma once

#include <uORB/uORB.h>
#include <uORB/topics/tune_control.h>
#include "tune_definition.h"

#define TUNE_DEFAULT_NOTE_LENGTH 4
#define TUNE_DEFAULT_OCTAVE 4
#define TUNE_DEFAULT_TEMPO 120

#define TUNE_MAX_UPDATE_INTERVAL_US 100000


class Tunes
{
public:
    enum class NoteMode {NORMAL, LEGATO, STACCATO};

    Tunes(unsigned default_note_length = TUNE_DEFAULT_NOTE_LENGTH,
          NoteMode default_note_mode   = NoteMode::NORMAL,
          unsigned default_octave      = TUNE_DEFAULT_OCTAVE,
          unsigned default_tempo       = TUNE_DEFAULT_TEMPO);

    ~Tunes() = default;

    int set_control(const tune_control_s &tune_control);

    void set_string(const char *const string, uint8_t volume);

    int get_next_note(unsigned &frequency, unsigned &duration, unsigned &silence);

    int get_next_note(unsigned &frequency, unsigned &duration,
              unsigned &silence, uint8_t &volume);

    unsigned int get_default_tunes_size() const {return _default_tunes_size;}

    unsigned int get_maximum_update_interval() {return (unsigned int)TUNE_MAX_UPDATE_INTERVAL_US;}

private:

    uint32_t note_to_frequency(unsigned note) const;

    unsigned note_duration(unsigned &silence, unsigned note_length, unsigned dots) const;

    unsigned rest_duration(unsigned rest_length, unsigned dots) const;

    int next_char();

    unsigned next_number();

    unsigned next_dots();

    void reset(bool repeat_flag);

    int tune_end();

    int tune_error();

    static const char *const  _default_tunes[];
    static const bool         _default_tunes_interruptable[];
    static const unsigned int _default_tunes_size;
    static const uint8_t      _note_tab[];

    const char *_next_tune      = nullptr; 
    const char *_tune           = nullptr; 
    const char *_tune_start_ptr = nullptr; 

    int _current_tune_id = static_cast<int>(TuneID::NONE);

    bool _repeat = false; 

    unsigned int _default_note_length = TUNE_DEFAULT_NOTE_LENGTH;
    NoteMode     _default_note_mode   = NoteMode::NORMAL;
    unsigned int _default_octave      = TUNE_DEFAULT_OCTAVE;
    unsigned int _default_tempo       = TUNE_DEFAULT_TEMPO;

    unsigned int _note_length         = TUNE_DEFAULT_NOTE_LENGTH;
    NoteMode     _note_mode           = NoteMode::NORMAL;
    unsigned int _octave              = TUNE_DEFAULT_OCTAVE;
    unsigned int _tempo               = TUNE_DEFAULT_TEMPO;

    unsigned int _duration  = 0;
    unsigned int _frequency = 0;
    unsigned int _silence   = 0;
    uint8_t      _volume    = 0;

    bool  _using_custom_msg = false;
};