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#include "MSPd.h"
static t_class *arrayfilt_class;
#define OBJECT_NAME "arrayfilt~"
typedef struct _arrayfilt
{
t_object x_obj;
t_float x_f;
t_word *a_samples;
int a_frames;
t_symbol *arrayname;
} t_arrayfilt;
static void *arrayfilt_new(t_symbol *msg, int argc, t_atom *argv);
static void arrayfilt_dsp(t_arrayfilt *x, t_signal **sp);
static void arrayfilt_setarray(t_arrayfilt *x);
void arrayfilt_tilde_setup(void) {
arrayfilt_class = class_new(gensym("arrayfilt~"), (t_newmethod)arrayfilt_new,
0, sizeof(t_arrayfilt),0,A_GIMME,0);
CLASS_MAINSIGNALIN(arrayfilt_class, t_arrayfilt, x_f);
class_addmethod(arrayfilt_class, (t_method)arrayfilt_dsp, gensym("dsp"), A_CANT, 0);
potpourri_announce(OBJECT_NAME);
}
void *arrayfilt_new(t_symbol *msg, int argc, t_atom *argv)
{
t_arrayfilt *x = (t_arrayfilt *)pd_new(arrayfilt_class);
// t_symbol *arrayname;
inlet_new(&x->x_obj, &x->x_obj.ob_pd,gensym("signal"), gensym("signal"));
outlet_new(&x->x_obj, gensym("signal"));
outlet_new(&x->x_obj, gensym("signal"));
x->arrayname = atom_getsymbolarg(0, argc, argv);
arrayfilt_setarray(x);
return x;
}
void arrayfilt_setarray(t_arrayfilt *x)
{
t_garray *a;
t_symbol *arrayname = x->arrayname;
if (!(a = (t_garray *)pd_findbyclass(arrayname, garray_class))) {
if (*arrayname->s_name) pd_error(x, "arrayflt~: %s: no such array", arrayname->s_name);
}
else {
garray_usedindsp(a);
if (!garray_getfloatwords(a, &x->a_frames, &x->a_samples))
{
pd_error(x, "%s: bad template for player~", arrayname->s_name);
}
}
}
t_int *arrayfilt_perform(t_int *w)
{
int i;
t_arrayfilt *x = (t_arrayfilt *) w[1];
t_float *mag_in = (t_float *) w[2];
t_float *phase_in = (t_float *) w[3];
t_float *mag_out = (t_float *) w[4];
t_float *phase_out = (t_float *) w[5];
t_float mag, phase;
t_word *a_samples = x->a_samples;
int a_frames = x->a_frames;
int n = (int) w[6];
int N2 = n / 2;
arrayfilt_setarray(x);
if(a_frames < N2+1) {
goto exit;
}
for(i = 0; i < N2 + 1; i++) {
mag = mag_in[i];
phase = phase_in[i];
mag_out[i] = mag * a_samples[i].w_float;
phase_out[i] = phase;
}
exit:
return (w + 7);
}
void arrayfilt_dsp(t_arrayfilt *x, t_signal **sp)
{
dsp_add(arrayfilt_perform,6, x,
sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, sp[3]->s_vec, (t_int)sp[0]->s_n);
}
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