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/*
* iemmatrix
*
* objects for manipulating simple matrices
* mostly refering to matlab/octave matrix functions
*
* Copyright (c) 2005, Franz Zotter
* IEM, Graz, Austria
*
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
*
*/
#include "iemmatrix.h"
static t_class *mtx_minmax_class;
static t_symbol *row_sym;
static t_symbol *col_sym;
static t_symbol *col_sym2;
typedef struct _MTXminmax_ MTXminmax;
struct _MTXminmax_
{
t_object x_obj;
int size;
int outsize;
int mode;
int operator_minimum; // 1 if we are [mtx_min], 0 if we are [mtx_max]
t_outlet *min_outlet;
t_outlet *max_outlet;
t_atom *minlist_out;
t_atom *maxlist_out;
};
static void deleteMTXMinMax (MTXminmax *mtx_minmax_obj)
{
if (mtx_minmax_obj->maxlist_out)
freebytes (mtx_minmax_obj->maxlist_out, sizeof(t_atom)*(mtx_minmax_obj->size));
if (mtx_minmax_obj->minlist_out)
freebytes (mtx_minmax_obj->minlist_out, sizeof(t_atom)*(mtx_minmax_obj->size));
}
static void mTXSetMinMaxMode (MTXminmax *mtx_minmax_obj, t_symbol *m_sym)
{
int mode=0;
if(gensym("row")==m_sym)
mode=1;
else if((gensym("col")==m_sym) || (gensym("column")==m_sym) || (gensym(":")==m_sym))
mode=2;
mtx_minmax_obj->mode = mode;
}
static void *newMTXMinMax (t_symbol *s)
{
MTXminmax *mtx_minmax_obj = (MTXminmax *) pd_new (mtx_minmax_class);
mtx_minmax_obj->mode=0;
mtx_minmax_obj->operator_minimum = 1;
mtx_minmax_obj->min_outlet = outlet_new (&mtx_minmax_obj->x_obj, gensym("matrix"));
mtx_minmax_obj->max_outlet = outlet_new (&mtx_minmax_obj->x_obj, gensym("matrix"));
if((NULL!=s)&&(&s_!=s)&&(NULL!=s->s_name))
mTXSetMinMaxMode (mtx_minmax_obj, s);
return ((void *) mtx_minmax_obj);
}
static void mTXMinMaxBang (MTXminmax *mtx_minmax_obj)
{
if (mtx_minmax_obj->maxlist_out)
outlet_list(mtx_minmax_obj->max_outlet, gensym("list"),
mtx_minmax_obj->outsize, mtx_minmax_obj->maxlist_out);
if (mtx_minmax_obj->minlist_out)
outlet_list(mtx_minmax_obj->min_outlet, gensym("list"),
mtx_minmax_obj->outsize, mtx_minmax_obj->minlist_out);
}
static void minmaxList (int n, t_atom *x, t_float*min, t_float*max)
{
t_float min_=atom_getfloat(x);
t_float max_=min_;
t_float f;
for (;n--;x++) {
f = atom_getfloat(x);
min_ = (min_ < f)?min_:f;
max_ = (max_ > f)?max_:f;
}
*max=max_;
*min=min_;
}
static void minmaxListStep (int n, const int step, t_atom *x, t_float*min, t_float*max)
{
t_float min_=atom_getfloat(x);
t_float max_=min_;
t_float f;
for (;n--;x+=step) {
f = atom_getfloat(x);
min_ = (min_ < f)?min_:f;
max_ = (max_ > f)?max_:f;
}
*max=max_;
*min=min_;
}
static void minmaxListColumns (const int rows, const int columns, t_atom *x,
t_atom *ap_min, t_atom *ap_max)
{
int count;
t_float min, max;
for (count=0; count < columns; count++, x++, ap_min++, ap_max++) {
minmaxListStep (rows, columns, x, &min, &max);
SETFLOAT(ap_min,min);
SETFLOAT(ap_max,max);
}
}
static void minmaxListRows (int rows, int columns, t_atom *x,
t_atom *ap_min, t_atom*ap_max)
{
int count;
t_float min, max;
for (count=0; count < rows; count++, x+=columns, ap_min++, ap_max++) {
minmaxList (columns, x, &min, &max);
SETFLOAT(ap_min, min);
SETFLOAT(ap_max,max);
}
}
static void mTXMinMaxMatrix (MTXminmax *mtx_minmax_obj, t_symbol *s,
int argc, t_atom *argv)
{
int rows = atom_getint (argv++);
int columns = atom_getint (argv++);
int size = rows * columns;
t_atom *maxlist_out = mtx_minmax_obj->maxlist_out;
t_atom *minlist_out = mtx_minmax_obj->minlist_out;
int elements_out;
// size check
if (!size) {
post("mtx_minmax: invalid dimensions");
return;
}
else if ((argc-2)<size) {
post("mtx_minmax: sparse matrix not yet supported: use \"mtx_check\"");
return;
}
if (size != mtx_minmax_obj->size) {
if (!minlist_out)
minlist_out = (t_atom *) getbytes (sizeof (t_atom) * size);
else
minlist_out = (t_atom *) resizebytes (minlist_out,
sizeof (t_atom) * (mtx_minmax_obj->size),
sizeof (t_atom) * size);
if (!maxlist_out)
maxlist_out = (t_atom *) getbytes (sizeof (t_atom) * size);
else
maxlist_out = (t_atom *) resizebytes (maxlist_out,
sizeof (t_atom) * (mtx_minmax_obj->size),
sizeof (t_atom) * size);
}
mtx_minmax_obj->size = size;
mtx_minmax_obj->minlist_out = minlist_out;
mtx_minmax_obj->maxlist_out = maxlist_out;
// main part
switch(mtx_minmax_obj->mode){
case 1:
elements_out = rows;
minmaxListRows (rows, columns, argv, minlist_out, maxlist_out);
break;
case 2:
elements_out = columns;
minmaxListColumns (rows, columns, argv, minlist_out, maxlist_out);
break;
default:
elements_out = 1;
minmaxListRows (1, size, argv, minlist_out, maxlist_out);
}
mtx_minmax_obj->outsize = elements_out;
maxlist_out = mtx_minmax_obj->maxlist_out;
minlist_out = mtx_minmax_obj->minlist_out;
mTXMinMaxBang(mtx_minmax_obj);
}
void mtx_minmax_setup (void)
{
mtx_minmax_class = class_new (
gensym("mtx_minmax"),
(t_newmethod) newMTXMinMax,
(t_method) deleteMTXMinMax,
sizeof (MTXminmax),
CLASS_DEFAULT, A_DEFSYM, 0);
class_addbang (mtx_minmax_class, (t_method) mTXMinMaxBang);
class_addmethod (mtx_minmax_class, (t_method) mTXMinMaxMatrix, gensym("matrix"), A_GIMME,0);
class_addmethod (mtx_minmax_class, (t_method) mTXSetMinMaxMode, gensym("mode"), A_DEFSYMBOL ,0);
row_sym = gensym("row");
col_sym = gensym("col");
col_sym2 = gensym("column");
}
void iemtx_minmax_setup(void){
mtx_minmax_setup();
}
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