1 files changed, 70 insertions, 0 deletions
diff --git a/flib/src/pp~.c b/flib/src/pp~.c
new file mode 100644
index 0000000..862a51e
--- /dev/null
+++ b/flib/src/pp~.c
@@ -0,0 +1,70 @@
+/* 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"));
+}