/*
 * Filename:    seq.h
 *
 * Description:
 *
 *
 * Version:     
 * Created:     Thu Oct 31 15:39:38 2019
 * Revision:    None
 * Author:      Rachel Fae Fox (foxiepaws),fox@foxiepa.ws
 *
 */

#include "seq.h"
#include <math.h>
#include <stdlib.h>


float get_freq(midinote n) {
    return pow(2.0,(((float)n-69.0)/12.0)) * 440.0;
} 
Seq* seq_new() {
    Seq *s = malloc(sizeof(Seq));
    s->step = 0;
    s->run = seq_run;
    s->t = 0;
    return s;
}
void seq_run(Seq *self) {
    __asm("nop");
    if (self->t < self->wait) {
	self->t++;
    } else {
	self->t = 0;
	self->step = (self->step < self->steps) ? self->step+1 : 0;
    }
    self->out = get_freq(self->notes[self->step]);
}