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authormusil <tmusil@users.sourceforge.net>2006-12-09 02:00:52 +0000
committermusil <tmusil@users.sourceforge.net>2006-12-09 02:00:52 +0000
commitd6b088044e161a27d49df537bbb6d998a8d0e50d (patch)
tree1a1b3a30e994767f4ef97b90194782258f2baa8a /src/iemlib2/fade~.c
parent32dc0c0deb13ce57f099f616ddc427296970d8a5 (diff)
// class_sethelpsymbol();
changed help-*.pd to *-help.pd chanded file structure to standard 1st step remove old svn path=/trunk/externals/iemlib/; revision=6756
Diffstat (limited to 'src/iemlib2/fade~.c')
-rw-r--r--src/iemlib2/fade~.c176
1 files changed, 0 insertions, 176 deletions
diff --git a/src/iemlib2/fade~.c b/src/iemlib2/fade~.c
deleted file mode 100644
index 3a2c91b..0000000
--- a/src/iemlib2/fade~.c
+++ /dev/null
@@ -1,176 +0,0 @@
-/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
-* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
-
-iemlib2 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2005 */
-
-#include "m_pd.h"
-#include "iemlib.h"
-#include <math.h>
-
-/* ------------------------- fade~ ----------------------------- */
-/* --- signal lookup tabel object with input range of 0 to 1 --- */
-/* ---- converts a linear signal ramp to the half of a : ------ */
-/* -- sine-wave, hanning-wave, squareroot-wave or mixes of it -- */
-
-t_float *iem_fade_tilde_table_lin=(t_float *)0L;
-t_float *iem_fade_tilde_table_linsqrt=(t_float *)0L;
-t_float *iem_fade_tilde_table_sqrt=(t_float *)0L;
-t_float *iem_fade_tilde_table_sin=(t_float *)0L;
-t_float *iem_fade_tilde_table_sinhann=(t_float *)0L;
-t_float *iem_fade_tilde_table_hann=(t_float *)0L;
-
-static t_class *fade_tilde_class;
-
-typedef struct _fade_tilde
-{
- t_object x_obj;
- t_float *x_table;
- t_float x_f;
-} t_fade_tilde;
-
-static void fade_tilde_set(t_fade_tilde *x, t_symbol *s)
-{
- if(s == gensym("_lin"))
- x->x_table = iem_fade_tilde_table_lin;
- else if(s == gensym("_linsqrt"))
- x->x_table = iem_fade_tilde_table_linsqrt;
- else if(s == gensym("_sqrt"))
- x->x_table = iem_fade_tilde_table_sqrt;
- else if(s == gensym("_sin"))
- x->x_table = iem_fade_tilde_table_sin;
- else if(s == gensym("_sinhann"))
- x->x_table = iem_fade_tilde_table_sinhann;
- else if(s == gensym("_hann"))
- x->x_table = iem_fade_tilde_table_hann;
-}
-
-static void *fade_tilde_new(t_symbol *s)
-{
- t_fade_tilde *x = (t_fade_tilde *)pd_new(fade_tilde_class);
- outlet_new(&x->x_obj, gensym("signal"));
- x->x_f = 0;
- x->x_table = iem_fade_tilde_table_lin;
- fade_tilde_set(x, s);
- return (x);
-}
-
-static t_int *fade_tilde_perform(t_int *w)
-{
- t_float *in = (t_float *)(w[1]);
- t_float *out = (t_float *)(w[2]);
- t_fade_tilde *x = (t_fade_tilde *)(w[3]);
- int n = (int)(w[4]);
- t_float *tab = x->x_table, *addr, f1, f2, frac;
- double dphase;
- int normhipart;
- union tabfudge tf;
-
- tf.tf_d = UNITBIT32;
- normhipart = tf.tf_i[HIOFFSET];
-
-#if 0 /* this is the readable version of the code. */
- while (n--)
- {
- dphase = (double)(*in++ * (t_float)(COSTABSIZE) * 0.99999) + UNITBIT32;
- tf.tf_d = dphase;
- addr = tab + (tf.tf_i[HIOFFSET] & (COSTABSIZE-1));
- tf.tf_i[HIOFFSET] = normhipart;
- frac = tf.tf_d - UNITBIT32;
- f1 = addr[0];
- f2 = addr[1];
- *out++ = f1 + frac * (f2 - f1);
- }
-#endif
-#if 1 /* this is the same, unwrapped by hand. */
- dphase = (double)(*in++ * (t_float)(COSTABSIZE) * 0.99999) + UNITBIT32;
- tf.tf_d = dphase;
- addr = tab + (tf.tf_i[HIOFFSET] & (COSTABSIZE-1));
- tf.tf_i[HIOFFSET] = normhipart;
- while (--n)
- {
- dphase = (double)(*in++ * (t_float)(COSTABSIZE) * 0.99999) + UNITBIT32;
- frac = tf.tf_d - UNITBIT32;
- tf.tf_d = dphase;
- f1 = addr[0];
- f2 = addr[1];
- addr = tab + (tf.tf_i[HIOFFSET] & (COSTABSIZE-1));
- *out++ = f1 + frac * (f2 - f1);
- tf.tf_i[HIOFFSET] = normhipart;
- }
- frac = tf.tf_d - UNITBIT32;
- f1 = addr[0];
- f2 = addr[1];
- *out++ = f1 + frac * (f2 - f1);
-#endif
- return (w+5);
-}
-
-static void fade_tilde_dsp(t_fade_tilde *x, t_signal **sp)
-{
- dsp_add(fade_tilde_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n);
-}
-
-static void fade_tilde_maketable(void)
-{
- int i;
- t_float *fp, phase, fff,phsinc = 0.5*3.141592653 / ((t_float)COSTABSIZE*0.99999);
- union tabfudge tf;
-
- if(!iem_fade_tilde_table_sin)
- {
- iem_fade_tilde_table_sin = (t_float *)getbytes(sizeof(t_float) * (COSTABSIZE+1));
- for(i=COSTABSIZE+1, fp=iem_fade_tilde_table_sin, phase=0; i--; fp++, phase+=phsinc)
- *fp = sin(phase);
- }
- if(!iem_fade_tilde_table_sinhann)
- {
- iem_fade_tilde_table_sinhann = (t_float *)getbytes(sizeof(t_float) * (COSTABSIZE+1));
- for(i=COSTABSIZE+1, fp=iem_fade_tilde_table_sinhann, phase=0; i--; fp++, phase+=phsinc)
- {
- fff = sin(phase);
- *fp = fff*sqrt(fff);
- }
- }
- if(!iem_fade_tilde_table_hann)
- {
- iem_fade_tilde_table_hann = (t_float *)getbytes(sizeof(t_float) * (COSTABSIZE+1));
- for(i=COSTABSIZE+1, fp=iem_fade_tilde_table_hann, phase=0; i--; fp++, phase+=phsinc)
- {
- fff = sin(phase);
- *fp = fff*fff;
- }
- }
- phsinc = 1.0 / ((t_float)COSTABSIZE*0.99999);
- if(!iem_fade_tilde_table_lin)
- {
- iem_fade_tilde_table_lin = (t_float *)getbytes(sizeof(t_float) * (COSTABSIZE+1));
- for(i=COSTABSIZE+1, fp=iem_fade_tilde_table_lin, phase=0; i--; fp++, phase+=phsinc)
- *fp = phase;
- }
- if(!iem_fade_tilde_table_linsqrt)
- {
- iem_fade_tilde_table_linsqrt = (t_float *)getbytes(sizeof(t_float) * (COSTABSIZE+1));
- for(i=COSTABSIZE+1, fp=iem_fade_tilde_table_linsqrt, phase=0; i--; fp++, phase+=phsinc)
- *fp = pow(phase, 0.75);
- }
- if(!iem_fade_tilde_table_sqrt)
- {
- iem_fade_tilde_table_sqrt = (t_float *)getbytes(sizeof(t_float) * (COSTABSIZE+1));
- for(i=COSTABSIZE+1, fp=iem_fade_tilde_table_sqrt, phase=0; i--; fp++, phase+=phsinc)
- *fp = sqrt(phase);
- }
- tf.tf_d = UNITBIT32 + 0.5;
- if((unsigned)tf.tf_i[LOWOFFSET] != 0x80000000)
- bug("fade~: unexpected machine alignment");
-}
-
-void fade_tilde_setup(void)
-{
- fade_tilde_class = class_new(gensym("fade~"), (t_newmethod)fade_tilde_new, 0,
- sizeof(t_fade_tilde), 0, A_DEFSYM, 0);
- CLASS_MAINSIGNALIN(fade_tilde_class, t_fade_tilde, x_f);
- class_addmethod(fade_tilde_class, (t_method)fade_tilde_dsp, gensym("dsp"), 0);
- class_addmethod(fade_tilde_class, (t_method)fade_tilde_set, gensym("set"), A_DEFSYM, 0);
- class_sethelpsymbol(fade_tilde_class, gensym("iemhelp/help-fade~"));
- fade_tilde_maketable();
-}