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Diffstat (limited to 'src/iemlib1/sigiem_cot4.c')
-rw-r--r--src/iemlib1/sigiem_cot4.c351
1 files changed, 175 insertions, 176 deletions
diff --git a/src/iemlib1/sigiem_cot4.c b/src/iemlib1/sigiem_cot4.c
index b0990d9..37a7789 100644
--- a/src/iemlib1/sigiem_cot4.c
+++ b/src/iemlib1/sigiem_cot4.c
@@ -1,176 +1,175 @@
-/* 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 - 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>
-
-/* ------------------------ iem_cot4~ ----------------------------- */
-
-float *iem_cot4_table_cos=(float *)0L;
-float *iem_cot4_table_sin=(float *)0L;
-
-static t_class *sigiem_cot4_class;
-
-typedef struct _sigiem_cot4
-{
- t_object x_obj;
- float x_sr;
- float x_msi;
-} t_sigiem_cot4;
-
-static t_int *sigiem_cot4_perform(t_int *w)
-{
- t_float *in = (t_float *)(w[1]);
- t_float *out = (t_float *)(w[2]);
- t_float norm_freq;
- t_float hout;
- t_sigiem_cot4 *x = (t_sigiem_cot4 *)(w[3]);
- t_float sr=x->x_sr;
- int n = (int)(w[4]);
- float *ctab = iem_cot4_table_cos, *stab = iem_cot4_table_sin;
- float *caddr, *saddr, cf1, cf2, sf1, sf2, frac;
- double dphase;
- int normhipart;
- int32 mytfi;
- union tabfudge tf;
-
- tf.tf_d = UNITBIT32;
- normhipart = tf.tf_i[HIOFFSET];
-
-#if 0 /* this is the readable version of the code. */
- while (n--)
- {
- norm_freq = *in * sr;
- if(norm_freq < 0.0001f)
- norm_freq = 0.0001f;
- else if(norm_freq > 0.9f)
- norm_freq = 0.9f;
- dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32;
- tf.tf_d = dphase;
- mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1);
- saddr = stab + (mytfi);
- caddr = ctab + (mytfi);
- tf.tf_i[HIOFFSET] = normhipart;
- frac = tf.tf_d - UNITBIT32;
- sf1 = saddr[0];
- sf2 = saddr[1];
- cf1 = caddr[0];
- cf2 = caddr[1];
- in++;
- *out++ = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1));
- }
-#endif
-#if 1 /* this is the same, unwrapped by hand. prolog beg*/
- n /= 4;
- norm_freq = *in * sr;
- if(norm_freq < 0.0001f)
- norm_freq = 0.0001f;
- else if(norm_freq > 0.9f)
- norm_freq = 0.9f;
- dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32;
- tf.tf_d = dphase;
- mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1);
- saddr = stab + (mytfi);
- caddr = ctab + (mytfi);
- tf.tf_i[HIOFFSET] = normhipart;
- in += 4; /*prolog end*/
- while (--n)
- {
- norm_freq = *in * sr;
- if(norm_freq < 0.0001f)
- norm_freq = 0.0001f;
- else if(norm_freq > 0.9f)
- norm_freq = 0.9f;
- dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32;
- frac = tf.tf_d - UNITBIT32;
- tf.tf_d = dphase;
- sf1 = saddr[0];
- sf2 = saddr[1];
- cf1 = caddr[0];
- cf2 = caddr[1];
- mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1);
- saddr = stab + (mytfi);
- caddr = ctab + (mytfi);
- hout = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1));
- *out++ = hout;
- *out++ = hout;
- *out++ = hout;
- *out++ = hout;
- in += 4;
- tf.tf_i[HIOFFSET] = normhipart;
- }/*epilog beg*/
- frac = tf.tf_d - UNITBIT32;
- sf1 = saddr[0];
- sf2 = saddr[1];
- cf1 = caddr[0];
- cf2 = caddr[1];
- hout = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1));
- *out++ = hout;
- *out++ = hout;
- *out++ = hout;
- *out++ = hout;
- /*epilog end*/
-#endif
- return (w+5);
-}
-
-static void sigiem_cot4_dsp(t_sigiem_cot4 *x, t_signal **sp)
-{
- x->x_sr = 2.0f / (float)sp[0]->s_sr;
- dsp_add(sigiem_cot4_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n);
-}
-
-static void sigiem_cot4_maketable(void)
-{
- int i;
- float *fp, phase, fff, phsinc = 0.5*3.141592653 / ((float)COSTABSIZE);
- union tabfudge tf;
-
- if(!iem_cot4_table_sin)
- {
- iem_cot4_table_sin = (float *)getbytes(sizeof(float) * (COSTABSIZE+1));
- for(i=COSTABSIZE+1, fp=iem_cot4_table_sin, phase=0; i--; fp++, phase+=phsinc)
- *fp = sin(phase);
- }
- if(!iem_cot4_table_cos)
- {
- iem_cot4_table_cos = (float *)getbytes(sizeof(float) * (COSTABSIZE+1));
- for(i=COSTABSIZE+1, fp=iem_cot4_table_cos, phase=0; i--; fp++, phase+=phsinc)
- *fp = cos(phase);
- }
- tf.tf_d = UNITBIT32 + 0.5;
- if((unsigned)tf.tf_i[LOWOFFSET] != 0x80000000)
- bug("iem_cot4~: unexpected machine alignment");
-}
-
-static void *sigiem_cot4_new(void)
-{
- t_sigiem_cot4 *x = (t_sigiem_cot4 *)pd_new(sigiem_cot4_class);
-
- outlet_new(&x->x_obj, gensym("signal"));
- x->x_msi = 0;
- return (x);
-}
-
-void sigiem_cot4_setup(void)
-{
- sigiem_cot4_class = class_new(gensym("iem_cot4~"), (t_newmethod)sigiem_cot4_new, 0,
- sizeof(t_sigiem_cot4), 0, 0);
- class_addcreator((t_newmethod)sigiem_cot4_new, gensym("iem_cot~"), 0);
- CLASS_MAINSIGNALIN(sigiem_cot4_class, t_sigiem_cot4, x_msi);
- class_addmethod(sigiem_cot4_class, (t_method)sigiem_cot4_dsp, gensym("dsp"), 0);
- sigiem_cot4_maketable();
- class_sethelpsymbol(sigiem_cot4_class, gensym("iemhelp/help-iem_cot4~"));
-}
-
+/* 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 */
+
+#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>
+
+/* ------------------------ iem_cot4~ ----------------------------- */
+
+float *iem_cot4_table_cos=(float *)0L;
+float *iem_cot4_table_sin=(float *)0L;
+
+static t_class *sigiem_cot4_class;
+
+typedef struct _sigiem_cot4
+{
+ t_object x_obj;
+ float x_sr;
+ float x_msi;
+} t_sigiem_cot4;
+
+static t_int *sigiem_cot4_perform(t_int *w)
+{
+ t_float *in = (t_float *)(w[1]);
+ t_float *out = (t_float *)(w[2]);
+ t_float norm_freq;
+ t_float hout;
+ t_sigiem_cot4 *x = (t_sigiem_cot4 *)(w[3]);
+ t_float sr=x->x_sr;
+ int n = (int)(w[4]);
+ float *ctab = iem_cot4_table_cos, *stab = iem_cot4_table_sin;
+ float *caddr, *saddr, cf1, cf2, sf1, sf2, frac;
+ double dphase;
+ int normhipart;
+ int32 mytfi;
+ union tabfudge tf;
+
+ tf.tf_d = UNITBIT32;
+ normhipart = tf.tf_i[HIOFFSET];
+
+#if 0 /* this is the readable version of the code. */
+ while (n--)
+ {
+ norm_freq = *in * sr;
+ if(norm_freq < 0.0001f)
+ norm_freq = 0.0001f;
+ else if(norm_freq > 0.9f)
+ norm_freq = 0.9f;
+ dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32;
+ tf.tf_d = dphase;
+ mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1);
+ saddr = stab + (mytfi);
+ caddr = ctab + (mytfi);
+ tf.tf_i[HIOFFSET] = normhipart;
+ frac = tf.tf_d - UNITBIT32;
+ sf1 = saddr[0];
+ sf2 = saddr[1];
+ cf1 = caddr[0];
+ cf2 = caddr[1];
+ in++;
+ *out++ = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1));
+ }
+#endif
+#if 1 /* this is the same, unwrapped by hand. prolog beg*/
+ n /= 4;
+ norm_freq = *in * sr;
+ if(norm_freq < 0.0001f)
+ norm_freq = 0.0001f;
+ else if(norm_freq > 0.9f)
+ norm_freq = 0.9f;
+ dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32;
+ tf.tf_d = dphase;
+ mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1);
+ saddr = stab + (mytfi);
+ caddr = ctab + (mytfi);
+ tf.tf_i[HIOFFSET] = normhipart;
+ in += 4; /*prolog end*/
+ while (--n)
+ {
+ norm_freq = *in * sr;
+ if(norm_freq < 0.0001f)
+ norm_freq = 0.0001f;
+ else if(norm_freq > 0.9f)
+ norm_freq = 0.9f;
+ dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32;
+ frac = tf.tf_d - UNITBIT32;
+ tf.tf_d = dphase;
+ sf1 = saddr[0];
+ sf2 = saddr[1];
+ cf1 = caddr[0];
+ cf2 = caddr[1];
+ mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1);
+ saddr = stab + (mytfi);
+ caddr = ctab + (mytfi);
+ hout = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1));
+ *out++ = hout;
+ *out++ = hout;
+ *out++ = hout;
+ *out++ = hout;
+ in += 4;
+ tf.tf_i[HIOFFSET] = normhipart;
+ }/*epilog beg*/
+ frac = tf.tf_d - UNITBIT32;
+ sf1 = saddr[0];
+ sf2 = saddr[1];
+ cf1 = caddr[0];
+ cf2 = caddr[1];
+ hout = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1));
+ *out++ = hout;
+ *out++ = hout;
+ *out++ = hout;
+ *out++ = hout;
+ /*epilog end*/
+#endif
+ return (w+5);
+}
+
+static void sigiem_cot4_dsp(t_sigiem_cot4 *x, t_signal **sp)
+{
+ x->x_sr = 2.0f / (float)sp[0]->s_sr;
+ dsp_add(sigiem_cot4_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n);
+}
+
+static void sigiem_cot4_maketable(void)
+{
+ int i;
+ float *fp, phase, fff, phsinc = 0.5*3.141592653 / ((float)COSTABSIZE);
+ union tabfudge tf;
+
+ if(!iem_cot4_table_sin)
+ {
+ iem_cot4_table_sin = (float *)getbytes(sizeof(float) * (COSTABSIZE+1));
+ for(i=COSTABSIZE+1, fp=iem_cot4_table_sin, phase=0; i--; fp++, phase+=phsinc)
+ *fp = sin(phase);
+ }
+ if(!iem_cot4_table_cos)
+ {
+ iem_cot4_table_cos = (float *)getbytes(sizeof(float) * (COSTABSIZE+1));
+ for(i=COSTABSIZE+1, fp=iem_cot4_table_cos, phase=0; i--; fp++, phase+=phsinc)
+ *fp = cos(phase);
+ }
+ tf.tf_d = UNITBIT32 + 0.5;
+ if((unsigned)tf.tf_i[LOWOFFSET] != 0x80000000)
+ bug("iem_cot4~: unexpected machine alignment");
+}
+
+static void *sigiem_cot4_new(void)
+{
+ t_sigiem_cot4 *x = (t_sigiem_cot4 *)pd_new(sigiem_cot4_class);
+
+ outlet_new(&x->x_obj, gensym("signal"));
+ x->x_msi = 0;
+ return (x);
+}
+
+void sigiem_cot4_setup(void)
+{
+ sigiem_cot4_class = class_new(gensym("iem_cot4~"), (t_newmethod)sigiem_cot4_new, 0,
+ sizeof(t_sigiem_cot4), 0, 0);
+ class_addcreator((t_newmethod)sigiem_cot4_new, gensym("iem_cot~"), 0);
+ CLASS_MAINSIGNALIN(sigiem_cot4_class, t_sigiem_cot4, x_msi);
+ class_addmethod(sigiem_cot4_class, (t_method)sigiem_cot4_dsp, gensym("dsp"), 0);
+ sigiem_cot4_maketable();
+ class_sethelpsymbol(sigiem_cot4_class, gensym("iemhelp/help-iem_cot4~"));
+}