1 files changed, 67 insertions, 0 deletions
diff --git a/cyclone/sickle/deltaclip.c b/cyclone/sickle/deltaclip.c
new file mode 100644
index 0000000..89c9321
--- /dev/null
+++ b/cyclone/sickle/deltaclip.c
@@ -0,0 +1,67 @@
+/* Copyright (c) 2002-2003 krzYszcz and others.
+ * For information on usage and redistribution, and for a DISCLAIMER OF ALL
+ * WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */
+
+#include "m_pd.h"
+#include "shared.h"
+#include "sickle/sic.h"
+
+#define DELTACLIP_DEFLO  0.
+#define DELTACLIP_DEFHI  0.
+
+typedef struct _deltaclip
+{
+    t_sic    x_sic;
+    t_float  x_last;
+} t_deltaclip;
+
+static t_class *deltaclip_class;
+
+static t_int *deltaclip_perform(t_int *w)
+{
+    t_deltaclip *x = (t_deltaclip *)(w[1]);
+    int nblock = (int)(w[2]);
+    t_float *in1 = (t_float *)(w[3]);
+    t_float *in2 = (t_float *)(w[4]);
+    t_float *in3 = (t_float *)(w[5]);
+    t_float *out = (t_float *)(w[6]);
+    t_float last = x->x_last;
+    while (nblock--)
+    {
+    	float f = *in1++;
+	float delta = f - last;
+    	float lo = *in2++;
+    	float hi = *in3++;
+    	if (delta < lo)
+	    f = last + lo;
+    	else if (delta > hi)
+	    f = last + hi;
+	*out++ = last = f;
+    }
+    x->x_last = last;
+    return (w + 7);
+}
+
+static void deltaclip_dsp(t_deltaclip *x, t_signal **sp)
+{
+    dsp_add(deltaclip_perform, 6, x, sp[0]->s_n,
+	    sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, sp[3]->s_vec);
+}
+
+static void *deltaclip_new(t_symbol *s, int ac, t_atom *av)
+{
+    t_deltaclip *x = (t_deltaclip *)pd_new(deltaclip_class);
+    sic_inlet((t_sic *)x, 1, DELTACLIP_DEFLO, 0, ac, av);
+    sic_inlet((t_sic *)x, 2, DELTACLIP_DEFHI, 1, ac, av);
+    outlet_new((t_object *)x, &s_signal);
+    x->x_last = 0;
+    return (x);
+}
+
+void deltaclip_tilde_setup(void)
+{
+    deltaclip_class = class_new(gensym("deltaclip~"),
+				(t_newmethod)deltaclip_new, 0,
+				sizeof(t_deltaclip), 0, A_GIMME, 0);
+    sic_setup(deltaclip_class, deltaclip_dsp, SIC_FLOATTOSIGNAL);
+}