From 541ab13ab9aaf849014d81d9159bd12a03320c74 Mon Sep 17 00:00:00 2001
From: musil <tmusil@users.sourceforge.net>
Date: Wed, 8 Nov 2006 13:24:10 +0000
Subject: changed sig* to *_tilde #if MSC_VER is obsolete replaced all float by
 t_float

svn path=/trunk/externals/iemlib/; revision=6231
---
 src/iemlib1/sin_phase~.c | 121 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 src/iemlib1/sin_phase~.c

(limited to 'src/iemlib1/sin_phase~.c')

diff --git a/src/iemlib1/sin_phase~.c b/src/iemlib1/sin_phase~.c
new file mode 100644
index 0000000..baf34f4
--- /dev/null
+++ b/src/iemlib1/sin_phase~.c
@@ -0,0 +1,121 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2005 */
+
+#include "m_pd.h"
+#include "iemlib.h"
+
+/* --- sin_phase~ - output the phase-difference between --- */
+/* --- 2 sinewaves with the same frequency in samples ----- */
+/* --- as a signal ---------------------------------------- */
+
+typedef struct _sin_phase_tilde
+{
+  t_object x_obj;
+  t_float  x_prev1;
+  t_float  x_prev2;
+  t_float  x_cur_out;
+  int      x_counter1;
+  int      x_counter2;
+  int      x_state1;
+  int      x_state2;
+  t_float  x_msi;
+} t_sin_phase_tilde;
+
+t_class *sin_phase_tilde_class;
+
+static t_int *sin_phase_tilde_perform(t_int *w)
+{
+  t_float *in1 = (t_float *)(w[1]);
+  t_float *in2 = (t_float *)(w[2]);
+  t_float *out = (t_float *)(w[3]);
+  t_sin_phase_tilde *x = (t_sin_phase_tilde *)(w[4]);
+  int i, n = (t_int)(w[5]);
+  t_float prev1=x->x_prev1;
+  t_float prev2=x->x_prev2;
+  t_float cur_out=x->x_cur_out;
+  int counter1=x->x_counter1;
+  int counter2=x->x_counter2;
+  int state1=x->x_state1;
+  int state2=x->x_state2;
+  
+  for(i=0; i<n; i++)
+  {
+    if((in1[i] >= 0.0f) && (prev1 < 0.0f))
+    {/* pos. zero cross of sig_in_1 */
+      state1 = 1;
+      counter1 = 0;
+    }
+    else if((in1[i] < 0.0f) && (prev1 >= 0.0f))
+    {/* neg. zero cross of sig_in_1 */
+      state2 = 1;
+      counter2 = 0;
+    }
+    
+    if((in2[i] >= 0.0f) && (prev2 < 0.0f))
+    {/* pos. zero cross of sig_in_2 */
+      state1 = 0;
+      cur_out = (t_float)(counter1);
+      counter1 = 0;
+    }
+    else if((in2[i] < 0.0f) && (prev2 >= 0.0f))
+    {/* neg. zero cross of sig_in_2 */
+      state2 = 0;
+      cur_out = (t_float)(counter2);
+      counter2 = 0;
+    }
+    
+    if(state1)
+      counter1++;
+    if(state2)
+      counter2++;
+    
+    prev1 = in1[i];
+    prev2 = in2[i];
+    out[i] = cur_out;
+  }
+  
+  x->x_prev1 = prev1;
+  x->x_prev2 = prev2;
+  x->x_cur_out = cur_out;
+  x->x_counter1 = counter1;
+  x->x_counter2 = counter2;
+  x->x_state1 = state1;
+  x->x_state2 = state2;
+  
+  return(w+6);
+}
+
+static void sin_phase_tilde_dsp(t_sin_phase_tilde *x, t_signal **sp)
+{
+  dsp_add(sin_phase_tilde_perform, 5, sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, x, sp[0]->s_n);
+}
+
+static void *sin_phase_tilde_new(void)
+{
+  t_sin_phase_tilde *x = (t_sin_phase_tilde *)pd_new(sin_phase_tilde_class);
+  
+  inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
+  outlet_new(&x->x_obj, &s_signal);
+  
+  x->x_prev1 = 0.0f;
+  x->x_prev2 = 0.0f;
+  x->x_cur_out = 0.0f;
+  x->x_counter1 = 0;
+  x->x_counter2 = 0;
+  x->x_state1 = 0;
+  x->x_state2 = 0;
+  x->x_msi = 0;
+  
+  return (x);
+}
+
+void sin_phase_tilde_setup(void)
+{
+  sin_phase_tilde_class = class_new(gensym("sin_phase~"), (t_newmethod)sin_phase_tilde_new,
+        0, sizeof(t_sin_phase_tilde), 0, 0);
+  CLASS_MAINSIGNALIN(sin_phase_tilde_class, t_sin_phase_tilde, x_msi);
+  class_addmethod(sin_phase_tilde_class, (t_method)sin_phase_tilde_dsp, gensym("dsp"), 0);
+  class_sethelpsymbol(sin_phase_tilde_class, gensym("iemhelp/help-sin_phase~"));
+}
-- 
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