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-rw-r--r--src/gestalt.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/src/gestalt.c b/src/gestalt.c
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+++ b/src/gestalt.c
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+/* ------------------------- gestalt ---------------------------------------- */
+/* */
+/* Find the 'gestalt' of the MIDI input. */
+/* Written by Olaf Matthes <olaf.matthes@gmx.de> */
+/* Get source at http://www.akustische-kunst.org/puredata/maxlib/ */
+/* */
+/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+/* */
+/* Based on PureData by Miller Puckette and others. */
+/* */
+/* ---------------------------------------------------------------------------- */
+
+#include "m_pd.h"
+#include <math.h>
+#include <stdio.h>
+
+static char *version = "gestalt v0.1, written by Olaf Matthes <olaf.matthes@gmx.de>";
+
+typedef struct gestalt
+{
+ t_object x_ob;
+ t_inlet *x_invelocity; /* inlet for velocity */
+ t_outlet *x_outgestalt; /* calculated 'gestalt'-value */
+
+ t_float x_lastpitch;
+ t_float x_velocity;
+
+ t_float x_reftime;
+
+ double x_lastontime;
+
+} t_gestalt;
+
+static void gestalt_ft1(t_gestalt *x, t_floatarg f)
+{
+ x->x_velocity = f;
+}
+
+static void gestalt_ft2(t_gestalt *x, t_floatarg f)
+{
+ if(f > 0.0) x->x_reftime = f;
+}
+
+static void gestalt_float(t_gestalt *x, t_floatarg f)
+{
+
+ int interval, pitch, gestalt;
+ double ontime = clock_getlogicaltime();
+
+ if(x->x_velocity) /* only process note-ons */
+ {
+
+ pitch = (t_int)f;
+ if(pitch < 1) pitch = 0;
+ if(pitch > 127) pitch = 127;
+
+ interval = abs(pitch - x->x_lastpitch);
+ gestalt = (clock_gettimesince(x->x_lastontime)/x->x_reftime) + interval;
+
+ x->x_lastpitch = pitch;
+ x->x_lastontime = ontime;
+
+ /* output values from right to left */
+ outlet_float(x->x_outgestalt, gestalt);
+ }
+}
+
+static t_class *gestalt_class;
+
+static void *gestalt_new(t_floatarg f)
+{
+ t_gestalt *x = (t_gestalt *)pd_new(gestalt_class);
+ inlet_new(&x->x_ob, &x->x_ob.ob_pd, gensym("float"), gensym("ft1"));
+ inlet_new(&x->x_ob, &x->x_ob.ob_pd, gensym("float"), gensym("ft2"));
+ x->x_outgestalt = outlet_new(&x->x_ob, gensym("float"));
+
+ x->x_lastontime = clock_getlogicaltime();
+
+ x->x_reftime = f;
+ if(x->x_reftime < 1) x->x_reftime = 1;
+
+#ifndef MAXLIB
+ post(version);
+#endif
+ return (void *)x;
+}
+
+void gestalt_setup(void)
+{
+ gestalt_class = class_new(gensym("gestalt"), (t_newmethod)gestalt_new,
+ 0, sizeof(t_gestalt), 0, A_DEFFLOAT, 0);
+ class_addfloat(gestalt_class, gestalt_float);
+ class_addmethod(gestalt_class, (t_method)gestalt_ft1, gensym("ft1"), A_FLOAT, 0);
+ class_addmethod(gestalt_class, (t_method)gestalt_ft2, gensym("ft2"), A_FLOAT, 0);
+ class_sethelpsymbol(gestalt_class, gensym("maxlib/help-gestalt.pd"));
+}
+