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-rw-r--r--zhzxh~/zhzxh~.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/zhzxh~/zhzxh~.c b/zhzxh~/zhzxh~.c
new file mode 100644
index 0000000..59a80d2
--- /dev/null
+++ b/zhzxh~/zhzxh~.c
@@ -0,0 +1,83 @@
+/* Copyright 2002 Benjamin R. Saylor
+ *
+ * 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
+ */
+
+#include "m_pd.h"
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+static t_class *zhzxh_class;
+
+typedef struct _zhzxh {
+ t_object x_obj;
+ t_float slope;
+ t_float lastval;
+ t_float srate;
+ t_float f;
+} t_zhzxh;
+
+static t_int *zhzxh_perform(t_int *w)
+{
+ t_zhzxh *x = (t_zhzxh *)(w[1]);
+ t_float *in = (t_float *)(w[2]);
+ t_float *out = (t_float *)(w[3]);
+ int n = (int)(w[4]);
+ t_float f;
+
+ t_float lastval = x->lastval;
+ t_float delta = x->slope / x->srate;
+
+ while (n--) {
+ f = *(in++);
+ if (lastval < f)
+ *out = lastval + delta;
+ else
+ *out = lastval - delta;
+ lastval = *(out++);
+ }
+
+ x->lastval = lastval;
+
+ return (w+5);
+}
+
+static void zhzxh_dsp(t_zhzxh *x, t_signal **sp)
+{
+ dsp_add(zhzxh_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+static void *zhzxh_new(t_symbol *s, int argc, t_atom *argv)
+{
+ t_zhzxh *x = (t_zhzxh *)pd_new(zhzxh_class);
+ x->slope = 1;
+ x->lastval = 0;
+ x->srate = sys_getsr();
+ floatinlet_new(&x->x_obj, &x->slope);
+ outlet_new(&x->x_obj, gensym("signal"));
+
+ return (x);
+}
+
+void zhzxh_tilde_setup(void)
+{
+ zhzxh_class = class_new(gensym("zhzxh~"), (t_newmethod)zhzxh_new, 0, sizeof(t_zhzxh), 0, A_GIMME, 0);
+ class_sethelpsymbol(zhzxh_class, gensym("help-zhzxh~.pd"));
+ CLASS_MAINSIGNALIN(zhzxh_class, t_zhzxh, f);
+ class_addmethod(zhzxh_class, (t_method)zhzxh_dsp, gensym("dsp"), 0);
+}