From faada59567f8cb252f4a909116595ce309ff5828 Mon Sep 17 00:00:00 2001
From: "N.N." <krzyszcz@users.sourceforge.net>
Date: Fri, 23 May 2003 12:29:55 +0000
Subject: This commit was generated by cvs2svn to compensate for changes in
 r647, which included commits to RCS files with non-trunk default branches.

svn path=/trunk/externals/miXed/; revision=648
---
 cyclone/sickle/peakamp.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 cyclone/sickle/peakamp.c

(limited to 'cyclone/sickle/peakamp.c')

diff --git a/cyclone/sickle/peakamp.c b/cyclone/sickle/peakamp.c
new file mode 100644
index 0000000..67d1093
--- /dev/null
+++ b/cyclone/sickle/peakamp.c
@@ -0,0 +1,107 @@
+/* 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 "sickle/sic.h"
+
+typedef struct _peakamp
+{
+    t_sic     x_sic;
+    t_float   x_value;
+    int       x_nwait;
+    int       x_nleft;
+    int       x_precount;
+    float     x_waittime;
+    float     x_ksr;
+    t_clock  *x_clock;
+} t_peakamp;
+
+static t_class *peakamp_class;
+
+static void peakamp_tick(t_peakamp *x)
+{
+    outlet_float(((t_object *)x)->ob_outlet, x->x_value);
+    x->x_value = 0;
+    if ((x->x_nleft = x->x_nwait - x->x_precount) < 0)  /* CHECKME */
+	x->x_nleft = 0;
+}
+
+static void peakamp_bang(t_peakamp *x)
+{
+    peakamp_tick(x);  /* CHECKME */
+}
+
+static void peakamp_ft1(t_peakamp *x, t_floatarg f)
+{
+    if ((x->x_waittime = f) < 0.)
+	x->x_waittime = 0.;
+    if ((x->x_nwait = (int)(x->x_waittime * x->x_ksr)) < 0)
+	x->x_nwait = 0;
+}
+
+static t_int *peakamp_perform(t_int *w)
+{
+    t_peakamp *x = (t_peakamp *)(w[1]); 
+    int nblock = (int)(w[2]);
+    t_float *in = (t_float *)(w[3]);
+    t_float value = x->x_value;
+    if (x->x_nwait)
+    {
+	if (x->x_nleft < nblock)
+	{
+	    clock_delay(x->x_clock, 0);
+	    x->x_precount = nblock - x->x_nleft;
+	    x->x_nleft = 0;  /* LATER rethink */
+	}
+	else x->x_nleft -= nblock;
+    }
+    while (nblock--)
+    {
+	t_float f = *in++;
+	if (f > value)
+	    value = f;
+	else if (f < -value)
+	    value = -f;
+    }
+    x->x_value = value;
+    return (w + 4);
+}
+
+static void peakamp_dsp(t_peakamp *x, t_signal **sp)
+{
+    x->x_ksr = sp[0]->s_sr * 0.001;
+    x->x_nwait = (int)(x->x_waittime * x->x_ksr);
+    dsp_add(peakamp_perform, 3, x, sp[0]->s_n, sp[0]->s_vec);
+}
+
+static void peakamp_free(t_peakamp *x)
+{
+    if (x->x_clock) clock_free(x->x_clock);
+}
+
+static void *peakamp_new(t_floatarg f)
+{
+    t_peakamp *x = (t_peakamp *)pd_new(peakamp_class);
+    x->x_value = 0.;
+    x->x_nleft = 0;
+    x->x_ksr = sys_getsr() * 0.001;
+    peakamp_ft1(x, f);
+    inlet_new((t_object *)x, (t_pd *)x, &s_float, gensym("ft1"));
+    outlet_new((t_object *)x, &s_float);
+    x->x_clock = clock_new(x, (t_method)peakamp_tick);
+    return (x);
+}
+
+void peakamp_tilde_setup(void)
+{
+    peakamp_class = class_new(gensym("peakamp~"),
+			      (t_newmethod)peakamp_new,
+			      (t_method)peakamp_free,
+			      sizeof(t_peakamp), 0,
+			      A_DEFFLOAT, 0);
+    sic_setup(peakamp_class, peakamp_dsp, SIC_FLOATTOSIGNAL);
+    class_addbang(peakamp_class, peakamp_bang);
+    class_addmethod(peakamp_class, (t_method)peakamp_ft1,
+		    gensym("ft1"), A_FLOAT, 0);
+}
-- 
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