Subversion Repositories DIN Is Noise

/*
* note.cc
* DIN Is Noise is copyright (c) 2006-2020 Jagannathan Sampath
* For more information, please visit https://dinisnoise.org/
*/

#include "note.h"
#include "main.h"
#include "scale_info.h"
#include <math.h>
#include <map>

extern char BUFFER [];
extern const char SPC;
extern int NOTATION;

note::note () {
  hz = 0;
  step = 0;
  scale_pos = 0;
  octave = 0;
}

void note::set_freq (float f) {
  hz = f;
  hz2step (hz, step);
  sprintf (BUFFER, "%0.3f", hz);
  hz_name = BUFFER;
}

void note::set_freq (float key, float interval) {
  set_freq (key * interval * pow (2.0, octave));
}

void note::set_name (const std::string& n) {
  name = n;
}

void note::set_name (const std::string& interval, int offset) {
  if (NOTATION == WESTERN) {
    extern std::map<std::string, int> NOTE_POS;
    extern const char* WESTERN_FLAT [];
    int np = NOTE_POS[interval];
    name = WESTERN_FLAT[(offset + np) % 12];
  } else {
    set_name (interval);
  }
}

void note::change_scale_pos (int j, scale_info& si) {
  scale_pos += j;
  if (scale_pos < 0) {
    scale_pos = si.second_last_note;
    --octave;
  }
  else if (scale_pos > si.last_note) {
    scale_pos = 1;
    ++octave;
  }
}

std::ofstream& note::save (std::ofstream& f) {
  f << name << SPC << hz_name << SPC << hz << SPC << step << SPC << scale_pos << SPC << octave << SPC;
  return f;
}

std::ifstream& note::load (std::ifstream& f) {
  f >> name >> hz_name >> hz >> step >> scale_pos >> octave;
  return f;
}