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/*
* Selfsimilar melodies and rhythm.
*/
#include "m_pd.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#define TRUE 1
#define FALSE 0
#define MAX_LEVELS 16
typedef short boolean;
static t_class *selfsimilar_class;
static t_class *selfsimilarrhythm_class;
/*
* Self-similar music
*/
typedef struct _selfsimilar {
t_object x_obj;
t_int counter;
t_int nr_notes;
t_int transpose;
t_int note_level[MAX_LEVELS]; // notes for all level
t_int melodypos[MAX_LEVELS]; // position in melody for each level
short poschanged[MAX_LEVELS]; // position changed?
t_int melody[16]; // melody
t_int levels; // number of levels (MAX 16)
t_outlet *note_out;
t_outlet *note_at_level[MAX_LEVELS];
} t_selfsimilar;
boolean changeposition(int level,t_selfsimilar *x) {
if (level == 0) {
x->melodypos[level]++;
x->poschanged[level]=TRUE;
}
else
if (changeposition((level-1),x) == TRUE) {
x->melodypos[level]++;
x->poschanged[level]=TRUE;
}
else {
x->poschanged[level]=FALSE;
return FALSE;
}
if (x->melodypos[level] > x->nr_notes-1) {
x->melodypos[level] = 0;
x->poschanged[level]=TRUE;
return TRUE;
}
else {
//x->poschanged[level]=FALSE;
return FALSE;
}
}
t_int createmelody(int level,t_selfsimilar *x,int currentupper) {
t_int note = 0; // not used!!!
if (level == 0) {
note = x->melody[x->melodypos[level]]-x->melody[0];
x->note_level[level] = note+currentupper;
}
else {
int current = x->melody[x->melodypos[level]]-x->melody[0]+currentupper;
int y = createmelody((level-1),x,current+x->transpose);
x->note_level[level] = current;
//note = x->melody[x->melodypos[level]]+y-x->melody[0]+x->transpose;
}
return note;
}
void selfsimilar_bang(t_selfsimilar *x)
{
int i = 0;
t_int note = 0;
for (i=0;i<x->levels;i++) {
if (x->poschanged[i] == TRUE)
outlet_float(x->note_at_level[i],x->note_level[i]);
}
//post("upper pos: %d",x->melodypos[x->levels-1]);
changeposition((x->levels-1),x);
x->note_level[x->levels-1] = x->melody[x->melodypos[x->levels-1]];
note = createmelody(x->levels-2,x,x->note_level[x->levels-1]+x->transpose);
note += x->melody[x->melodypos[x->levels-1]];
//post("notes: %d %d %d",x->note_level[0],x->note_level[1],x->note_level[2]);
//outlet_float(x->note_out,note);
}
void selfsimilar_initDummyNoteSequence(t_selfsimilar *x) {
x->nr_notes = 4;
/* x->melody[0] = 1;
x->melody[1] = 2;
x->melody[2] = 3;
x->melody[3] = 4;
x->melody[4] = 5;
*/
x->melody[0] = 54;
x->melody[1] = 57;
x->melody[2] = 52;
x->melody[3] = 61;
}
void *selfsimilar_new(t_symbol *s, int argc, t_atom *argv)
{
int i = 0;
int y;
t_selfsimilar *x = (t_selfsimilar *)pd_new(selfsimilar_class);
if (argc > 2) {
x->levels = atom_getfloat(&argv[0]);
x->transpose = atom_getfloat(&argv[1]);
x->nr_notes = argc-2;
for (i=2;i<argc;i++)
x->melody[i-2] = atom_getfloat(&argv[i]);
}
else {
selfsimilar_initDummyNoteSequence(x);
if (argc < 2) {
x->transpose = 12;
if (argc == 0) x->levels = 3;
else x->levels= atom_getfloat(&argv[0]); }
else x->transpose = atom_getfloat(&argv[1]);
}
if (x->levels > MAX_LEVELS) x->levels = MAX_LEVELS; // levels between 2 and 10
if (x->levels < 2) x->levels = 2;
//x->note_out = outlet_new(&x->x_obj,&s_float);
for (i=0;i<x->levels;i++) {
x->melodypos[i] = 0; // position of each level
x->poschanged[i] = TRUE; // notes on each level should start playing
x->note_at_level[i] = outlet_new(&x->x_obj,&s_float); // connect outlet for each level
x->note_level[i] = x->melody[0] + x->transpose*(x->levels-i-1);
}
return (void *)x;
}
typedef struct _selfsimilarrhythm {
t_object x_obj;
t_int counter;
t_float time_level[MAX_LEVELS]; // times for all level
t_int melodypos[10]; // position in melody for each level
short poschanged[MAX_LEVELS]; // position changed?
t_float melody[5]; // melody
t_int levels; // number of levels (MAX 16)
t_outlet *time_out;
t_outlet *time_at_level[MAX_LEVELS];
} t_selfsimilarrhythm;
boolean changepositiontime(int level,t_selfsimilarrhythm *x) {
if (level == 0) {
x->melodypos[level]++;
x->poschanged[level]=TRUE;
}
else
if (changepositiontime((level-1),x) == TRUE) {
x->melodypos[level]++;
x->poschanged[level]=TRUE;
}
else {
x->poschanged[level]=FALSE;
return FALSE;
}
if (x->melodypos[level] > 4) {
x->melodypos[level] = 0;
x->poschanged[level]=TRUE;
return TRUE;
}
else {
x->poschanged[level]=FALSE;
return FALSE;
}
}
t_float createrhytm(int level,t_selfsimilarrhythm *x,int currentupper) {
t_float time;
if (level == 0) {
time = x->melody[x->melodypos[level]];
x->time_level[level] = time;
}
else {
float current = x->melody[x->melodypos[level]]*currentupper/1000;
float y = createrhytm((level-1),x,current);
x->time_level[level] = current;
time = x->melody[x->melodypos[level]]*y;
}
return time;
}
void selfsimilarrhythm_bang(t_selfsimilarrhythm *x)
{
int i = 0;
t_float time = 0;
time = createrhytm((x->levels-1),x,x->melody[x->melodypos[x->levels-1]]);
//time += x->melody[x->melodypos[x->levels-1]];
changepositiontime((x->levels-1),x);
outlet_float(x->time_out,time);
// for (i=0;i<x->levels;i++) {
// if (x->poschanged[i] == TRUE)
// outlet_float(x->time_at_level[i],x->time_level[i]);
// }
}
void *selfsimilarrhythm_new(t_floatarg f1)
{
int i = 0;
int y;
t_selfsimilarrhythm *x = (t_selfsimilarrhythm *)pd_new(selfsimilarrhythm_class);
x->levels = f1;
if (x->levels > 16) x->levels = 16; // levels between 2 and 10
if (x->levels < 2) x->levels = 2;
x->melody[0] = 1000;
x->melody[1] = 250;
x->melody[2] = 250;
x->melody[3] = 500;
x->time_out = outlet_new(&x->x_obj,&s_float);
for (i=0;i<x->levels;i++) {
x->melodypos[i] = 0; // position of each level
x->poschanged[i] = TRUE; // times on each level should start playing
// x->time_at_level[i] = outlet_new(&x->x_obj,&s_float); // connect outlet for each level
}
return (void *)x;
}
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