From 577ac6e80ff4f436fbd054291ed7dddbc31bd49a Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <eighthave@users.sourceforge.net>
Date: Tue, 18 May 2004 21:33:33 +0000
Subject: This commit was generated by cvs2svn to compensate for changes in
 r1738, which included commits to RCS files with non-trunk default branches.

svn path=/trunk/externals/iemlib/; revision=1739
---
 src/iem_t3_lib/t3_delay.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 src/iem_t3_lib/t3_delay.c

(limited to 'src/iem_t3_lib/t3_delay.c')

diff --git a/src/iem_t3_lib/t3_delay.c b/src/iem_t3_lib/t3_delay.c
new file mode 100644
index 0000000..a422718
--- /dev/null
+++ b/src/iem_t3_lib/t3_delay.c
@@ -0,0 +1,97 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iem_t3_lib written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ------------------------ t3_delay ---------------------------- */
+static t_class *t3_delay_class;
+
+typedef struct _t3_delay
+{
+    t_object x_obj;
+    t_clock *x_clock;
+    double x_deltime;
+    double x_ticks2ms;
+    double x_t3_bang;
+} t_t3_delay;
+
+static void t3_delay_tick(t_t3_delay *x)
+{
+    outlet_float(x->x_obj.ob_outlet, x->x_t3_bang);
+}
+
+static void t3_delay_stop(t_t3_delay *x)
+{
+    clock_unset(x->x_clock);
+}
+
+static void t3_delay_float(t_t3_delay *x, t_floatarg t3_bang)
+{
+    double dticks;
+    int iticks;
+
+    if(t3_bang < 0)
+	t3_bang = 0;
+    dticks = (x->x_deltime + (double)t3_bang)/x->x_ticks2ms;
+    iticks = (int)dticks;
+    x->x_t3_bang = (dticks - (double)iticks)*x->x_ticks2ms;
+    clock_delay(x->x_clock, (double)iticks*x->x_ticks2ms);
+}
+
+static void t3_delay_ft1(t_t3_delay *x, t_floatarg f)
+{
+    if(f < 0)
+	f = 0;
+    x->x_deltime = f;
+}
+
+static void t3_delay_list(t_t3_delay *x, t_symbol *s, int ac, t_atom *av)
+{
+    if((ac == 2)&&IS_A_FLOAT(av,0)&&IS_A_FLOAT(av,1))
+    {
+	t3_delay_ft1(x, atom_getfloatarg(1, ac, av));
+        t3_delay_float(x, atom_getfloatarg(0, ac, av));
+    }
+}
+
+static void t3_delay_free(t_t3_delay *x)
+{
+    clock_free(x->x_clock);
+}
+
+static void *t3_delay_new(t_floatarg f)
+{
+    t_t3_delay *x = (t_t3_delay *)pd_new(t3_delay_class);
+
+    x->x_ticks2ms = 1000.0*(double)sys_getblksize()/(double)sys_getsr();
+    t3_delay_ft1(x, f);
+    x->x_clock = clock_new(x, (t_method)t3_delay_tick);
+    outlet_new(&x->x_obj, &s_float);
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("ft1"));
+    return (x);
+}
+
+void t3_delay_setup(void)
+{
+    t3_delay_class = class_new(gensym("t3_delay"), (t_newmethod)t3_delay_new,
+    	(t_method)t3_delay_free, sizeof(t_t3_delay), 0, A_DEFFLOAT, 0);
+    class_addcreator((t_newmethod)t3_delay_new, gensym("t3_del"), A_DEFFLOAT, 0);
+    class_addmethod(t3_delay_class, (t_method)t3_delay_stop, gensym("stop"), 0);
+    class_addmethod(t3_delay_class, (t_method)t3_delay_ft1,
+    	gensym("ft1"), A_FLOAT, 0);
+    class_addfloat(t3_delay_class, (t_method)t3_delay_float);
+    class_addlist(t3_delay_class, (t_method)t3_delay_list);
+    class_sethelpsymbol(t3_delay_class, gensym("iemhelp/help-t3_delay"));
+}
+
-- 
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