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/* flib - PD library for feature extraction
Copyright (C) 2005 Jamie Bullock
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/* calculates the sum of the samples in each frame*/
#include "flib.h"
static t_class *pp_class;
typedef struct _pp {
t_object x_obj;
t_float f,x;
} t_pp;
static t_int *pp_perform(t_int *w)
{
t_sample *in = (t_sample *)(w[1]);
t_pp *x = (t_pp *)(w[2]);
t_int N = (t_int)(w[3]);
float sum = 0;
while(N--)
sum += *in++;
outlet_float(x->x_obj.ob_outlet, sum);
return (w+4);
}
static void pp_dsp(t_pp *x, t_signal **sp)
{
dsp_add(pp_perform, 3,
sp[0]->s_vec, x, sp[0]->s_n);
}
static void *pp_new(void)
{
t_pp *x = (t_pp *)pd_new(pp_class);
outlet_new(&x->x_obj, &s_float);
return (void *)x;
}
void pp_tilde_setup(void) {
pp_class = class_new(gensym("pp~"),
(t_newmethod)pp_new,
0, sizeof(t_pp),
CLASS_DEFAULT,0);
class_addcreator((t_newmethod)pp_new, gensym("++~"), A_DEFFLOAT, 0);
class_addmethod(pp_class,
(t_method)pp_dsp, gensym("dsp"), 0);
CLASS_MAINSIGNALIN(pp_class, t_pp,f);
class_sethelpsymbol(pp_class, gensym("help-flib"));
}
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