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/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
iem_tab written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2005 */
#ifdef NT
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif
#include "m_pd.h"
#include "iemlib.h"
#include "iem_tab.h"
#include <math.h>
#include <stdio.h>
#include <string.h>
/* -------------------------- tab_cross_corr ------------------------------ */
typedef struct _tab_cross_corr
{
t_object x_obj;
int x_size_src1;
int x_size_src2;
int x_size_dst;
int x_n;
float *x_beg_mem_src1;
float *x_beg_mem_src2;
float *x_beg_mem_dst;
float x_factor;
t_symbol *x_sym_scr1;
t_symbol *x_sym_scr2;
t_symbol *x_sym_dst;
float x_delay;
int x_counter;
void *x_clock;
} t_tab_cross_corr;
static t_class *tab_cross_corr_class;
static void tab_cross_corr_tick(t_tab_cross_corr *x)
{
x->x_counter++;
if(x->x_counter < x->x_n)
{
t_float *vec_src1, *vec_src2, *vec_dst, sum;
int j, m;
vec_src1 = x->x_beg_mem_src1 + x->x_counter;
vec_src2 = x->x_beg_mem_src2;
vec_dst = x->x_beg_mem_dst + x->x_counter;
m = x->x_size_src2;
sum = 0.0f;
for(j=0; j<m; j++)
{
sum += vec_src1[j]*vec_src2[j];
}
vec_dst[0] = sum*x->x_factor;
clock_delay(x->x_clock, x->x_delay);
}
else
{
t_garray *a;
clock_unset(x->x_clock);
outlet_bang(x->x_obj.ob_outlet);
a = (t_garray *)pd_findbyclass(x->x_sym_dst, garray_class);
garray_redraw(a);
}
}
static void tab_cross_corr_time(t_tab_cross_corr *x, t_floatarg time)
{
if(time < 0.0f)
time = 0.0f;
x->x_delay = time;
}
static void tab_cross_corr_factor(t_tab_cross_corr *x, t_floatarg factor)
{
x->x_factor = factor;
}
static void tab_cross_corr_src1(t_tab_cross_corr *x, t_symbol *s)
{
x->x_sym_scr1 = s;
}
static void tab_cross_corr_src2(t_tab_cross_corr *x, t_symbol *s)
{
x->x_sym_scr2 = s;
}
static void tab_cross_corr_dst(t_tab_cross_corr *x, t_symbol *s)
{
x->x_sym_dst = s;
}
static void tab_cross_corr_bang(t_tab_cross_corr *x)
{
int i, j, m, n;
int ok_src1, ok_src2, ok_dst;
t_float *vec_src1, *vec_src2, *vec_dst;
t_float sum, f;
ok_src1 = iem_tab_check_arrays(gensym("tab_cross_corr"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, 0);
ok_src2 = iem_tab_check_arrays(gensym("tab_cross_corr"), x->x_sym_scr2, &x->x_beg_mem_src2, &x->x_size_src2, 0);
ok_dst = iem_tab_check_arrays(gensym("tab_cross_corr"), x->x_sym_dst, &x->x_beg_mem_dst, &x->x_size_dst, 0);
if(ok_src1 && ok_src2 && ok_dst)
{
if(x->x_size_src1 > x->x_size_src2)
n = x->x_size_src1 - x->x_size_src2;
else
n = 0;
if(n > x->x_size_dst)
x->x_n = x->x_size_dst;
else
x->x_n = n;
f = x->x_factor;
if(n)
{
if(x->x_delay == 0.0f)
{
t_garray *a;
vec_src1 = x->x_beg_mem_src1;
vec_src2 = x->x_beg_mem_src2;
vec_dst = x->x_beg_mem_dst;
m = x->x_size_src2;
for(i=0; i<n; i++)
{
sum = 0.0f;
for(j=0; j<m; j++)
{
sum += vec_src1[i+j]*vec_src2[j];
}
vec_dst[i] = sum*f;
}
outlet_bang(x->x_obj.ob_outlet);
a = (t_garray *)pd_findbyclass(x->x_sym_dst, garray_class);
garray_redraw(a);
}
else
{
x->x_counter = 0;
vec_src1 = x->x_beg_mem_src1 + x->x_counter;
vec_src2 = x->x_beg_mem_src2;
vec_dst = x->x_beg_mem_dst + x->x_counter;
m = x->x_size_src2;
sum = 0.0f;
for(j=0; j<m; j++)
{
sum += vec_src1[j]*vec_src2[j];
}
vec_dst[0] = sum*f;
clock_delay(x->x_clock, x->x_delay);
}
}
}
}
static void tab_cross_corr_free(t_tab_cross_corr *x)
{
clock_free(x->x_clock);
}
static void *tab_cross_corr_new(t_symbol *s, int argc, t_atom *argv)
{
t_tab_cross_corr *x = (t_tab_cross_corr *)pd_new(tab_cross_corr_class);
t_symbol *src1, *src2, *dst;
t_float time, factor;
if((argc >= 3) &&
IS_A_SYMBOL(argv,0) &&
IS_A_SYMBOL(argv,1) &&
IS_A_SYMBOL(argv,2) &&
IS_A_FLOAT(argv,3) &&
IS_A_FLOAT(argv,4))
{
src1 = (t_symbol *)atom_getsymbolarg(0, argc, argv);
src2 = (t_symbol *)atom_getsymbolarg(1, argc, argv);
dst = (t_symbol *)atom_getsymbolarg(2, argc, argv);
factor = (t_float)atom_getfloatarg(3, argc, argv);
time = (t_float)atom_getfloatarg(4, argc, argv);
}
else
{
post("tab_cross_corr-ERROR: need 3 symbol + 2 float arguments:");
post(" source_reference_array_name + source_measure_array_name + destination_array_name + norm_factor + calculation-time-per-sample_ms");
return(0);
}
if(time < 0.0f)
time = 0.0f;
x->x_delay = time;
x->x_factor = factor;
x->x_sym_scr1 = src1;
x->x_sym_scr2 = src2;
x->x_sym_dst = dst;
outlet_new(&x->x_obj, &s_bang);
x->x_clock = clock_new(x, (t_method)tab_cross_corr_tick);
return(x);
}
void tab_cross_corr_setup(void)
{
tab_cross_corr_class = class_new(gensym("tab_cross_corr"), (t_newmethod)tab_cross_corr_new, (t_method)tab_cross_corr_free,
sizeof(t_tab_cross_corr), 0, A_GIMME, 0);
class_addbang(tab_cross_corr_class, (t_method)tab_cross_corr_bang);
class_addmethod(tab_cross_corr_class, (t_method)tab_cross_corr_time, gensym("time"), A_DEFFLOAT, 0);
class_addmethod(tab_cross_corr_class, (t_method)tab_cross_corr_factor, gensym("factor"), A_DEFFLOAT, 0);
class_addmethod(tab_cross_corr_class, (t_method)tab_cross_corr_src2, gensym("src2"), A_DEFSYMBOL, 0);
class_addmethod(tab_cross_corr_class, (t_method)tab_cross_corr_src1, gensym("src1"), A_DEFSYMBOL, 0);
class_addmethod(tab_cross_corr_class, (t_method)tab_cross_corr_dst, gensym("dst"), A_DEFSYMBOL, 0);
class_sethelpsymbol(tab_cross_corr_class, gensym("iemhelp2/tab_cross_corr-help"));
}
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