From 6a9bc88d7b52fc35b9fe3597cd29d9fbe90387ee Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <eighthave@users.sourceforge.net>
Date: Tue, 9 Feb 2010 21:40:51 +0000
Subject: updated to sigpack-0.04-win32.zip and committed forgotten debian
 files

svn path=/trunk/externals/sigpack/; revision=13154
---
 hardlimit~.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 hardlimit~.c

(limited to 'hardlimit~.c')

diff --git a/hardlimit~.c b/hardlimit~.c
new file mode 100644
index 0000000..3ae1e10
--- /dev/null
+++ b/hardlimit~.c
@@ -0,0 +1,81 @@
+// sigpack
+// for
+// pure-data
+// by weiss
+// www.weiss-archiv.de
+
+#include "m_pd.h"
+#include <math.h>
+#ifdef _MSC_VER
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+// ------------------------ hardlimit~ ----------------------------- 
+// brick hard limiter with residue mixer
+// code from swh_plugins by steve harris www.plugin.org.uk 
+
+static t_class *hardlimit_tilde_class;
+
+typedef struct _hardlimit_tilde
+{
+    t_object x_obj;
+	t_sample x_limit_db;//-50.0 - 0.0
+	t_sample x_wet_gain;//0.0 - 1.0
+	t_sample x_res_gain;//0.0 - 1.0
+	float x_f;
+} t_hardlimit_tilde;
+
+static void *hardlimit_tilde_new(t_floatarg limitdb, t_floatarg wetgain, t_floatarg resgain)
+{
+    t_hardlimit_tilde *x = (t_hardlimit_tilde *)pd_new(hardlimit_tilde_class);
+	x->x_limit_db = limitdb;
+	x->x_wet_gain = wetgain;
+	x->x_res_gain = resgain;
+	outlet_new(&x->x_obj, gensym("signal"));
+	floatinlet_new(&x->x_obj, &x->x_limit_db);
+	floatinlet_new(&x->x_obj, &x->x_wet_gain);
+	floatinlet_new(&x->x_obj, &x->x_res_gain);
+	x->x_f = 0;
+	if (limitdb) x->x_limit_db = limitdb;
+	else x->x_limit_db = 0.0;
+	if (wetgain) x->x_wet_gain = wetgain;
+	else x->x_wet_gain = 0.0;
+	if (resgain) x->x_res_gain = resgain;
+	else x->x_res_gain = 0.0;
+    return (x);
+}
+
+static t_int *hardlimit_tilde_perform(t_int *w)
+{
+	t_hardlimit_tilde *x = (t_hardlimit_tilde *)(w[1]);
+    t_float *in = (t_float *)(w[2]);
+    t_float *out = (t_float *)(w[3]);
+    int n = (int)(w[4]);
+	float f;
+	float limit_g, sign, data, residue;
+    while (n--)
+    {
+		f = *in++;
+		limit_g = pow(10, x->x_limit_db / 20);
+		sign = f < 0.0 ? -1.0 : 1.0;
+		data = f * sign;
+		residue = data > limit_g ? data - limit_g : 0.0;
+		data -= residue;
+		*out++ = sign * (x->x_wet_gain * data + x->x_res_gain * residue);
+    }
+    return (w+5);
+}
+
+static void hardlimit_tilde_dsp(t_hardlimit_tilde *x, t_signal **sp)
+{
+    dsp_add(hardlimit_tilde_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+void hardlimit_tilde_setup(void)
+{
+    hardlimit_tilde_class = class_new(gensym("hardlimit~"), (t_newmethod)hardlimit_tilde_new, 0,
+    	sizeof(t_hardlimit_tilde), 0, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0);
+    CLASS_MAINSIGNALIN(hardlimit_tilde_class, t_hardlimit_tilde, x_f);
+    class_addmethod(hardlimit_tilde_class, (t_method)hardlimit_tilde_dsp, gensym("dsp"), 0);
+}
-- 
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