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authorIOhannes m zmölnig <zmoelnig@users.sourceforge.net>2005-03-22 20:58:25 +0000
committerIOhannes m zmölnig <zmoelnig@users.sourceforge.net>2005-03-22 20:58:25 +0000
commit2b60d55c919e7588f5aff15936e83c300b3660bb (patch)
tree14d860de7f28083d3756ad91b627de70f26788f6 /src/z_pdf.c
parentc500bc542cb7cc78d6dac3f7da3bff626056b1aa (diff)
zexy-2.0:
- use of abstractions for objects that allow it - some objects are build both as externals and abstractions (as slower fallbacks) - code-layout is now 1:1 c-file<->object (this should allow for building of zexy as a collection of externals instead as a big library) - matrix-objects have moved to iemmatrix !! svn path=/trunk/externals/zexy/; revision=2641
Diffstat (limited to 'src/z_pdf.c')
-rw-r--r--src/z_pdf.c128
1 files changed, 0 insertions, 128 deletions
diff --git a/src/z_pdf.c b/src/z_pdf.c
deleted file mode 100644
index dc6fbfe..0000000
--- a/src/z_pdf.c
+++ /dev/null
@@ -1,128 +0,0 @@
-/* get the ProbabilityDensityFunction of a signal */
-
-#include "zexy.h"
-
-#ifdef NT
-#pragma warning( disable : 4244 )
-#pragma warning( disable : 4305 )
-#endif
-
-/* ------------------------ pdf~ ----------------------------- */
-
-static t_class *pdf_class;
-
-typedef struct _pdf
-{
- t_object x_obj;
-
- t_float *buf;
- int size;
- t_float halfsize;
-} t_pdf;
-
-static void clear_pdfbuf(t_pdf *x)
-{
- int n = x->size;
- t_float *buf = x->buf;
-
- while (n--) *buf++=0.;
-}
-
-static void pdf_bang(t_pdf *x)
-{
- int n = x->size;
- t_float *buf = x->buf, max = 0;
- t_atom a[2];
-
- while (n--) if (max < *buf++) max = buf[-1];
-
- n=x->size;
- buf = x->buf;
-
- if (max==0.) max=1.;
- max = 1./max;
-
- while (n--)
- {
- SETFLOAT(a, *buf++*max);
- SETFLOAT(a+1,x->size-n-1);
- outlet_list(x->x_obj.ob_outlet, &s_list, 2, (t_atom*)&a);
- }
-}
-
-static void pdf_float(t_pdf *x, t_floatarg f)
-{
- if (f) pdf_bang(x); else clear_pdfbuf(x);
-}
-
-static t_int *pdf_perform(t_int *w)
-{
- t_float *in = (t_float *)(w[1]);
- t_pdf *x = (t_pdf *)(w[2]);
- int n = (int)(w[3]);
-
- t_float *buf = x->buf;
- t_float halfsize = x->halfsize;
-
- while (n--)
- {
- t_float f = *in++;
- int index = ((f + 1.0) * halfsize)+0.5;
- buf[(index<0)?0:((index>=x->size)?x->size-1:index)]+=1.;
- }
- return (w+4);
-}
-
-static void pdf_dsp(t_pdf *x, t_signal **sp)
-{
- x->halfsize = (x->size - 1) / 2.0;
-
- dsp_add(pdf_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
-}
-
-static void *pdf_new(t_floatarg f)
-{
- int i = f;
- t_pdf *x = (t_pdf *)pd_new(pdf_class);
- t_float *buf;
-
- x->size = (i)?i:64;
- x->buf = (t_float *)getbytes(x->size * sizeof(t_float));
- buf = x->buf;
- clear_pdfbuf(x);
-
- outlet_new(&x->x_obj, &s_list);
-
- return (x);
-}
-
-static void pdf_free(t_pdf *x)
-{
- freebytes(x->buf, x->size*sizeof(t_float));
-}
-
-static void helper(void)
-{
- post("\n%c pdf~\t:: get the probability density function of a signal (-1.0 to +1.0)", HEARTSYMBOL);
- post("'bang'\t : output a list of the probabilities of 'n' function values"
- "\n'clear'\t : clear the buffer (set all probabilities to zero)"
- "\n<1/0>\t : short for 'bang' and 'clear'"
- "\n'help'\t : view this");
- post("creation :: 'pdf~ [<n>]':: get the pdf for <n> (default: 64) values");
-}
-
-void z_pdf_setup(void)
-{
- pdf_class = class_new(gensym("pdf~"), (t_newmethod)pdf_new, (t_method)pdf_free,
- sizeof(t_pdf), 0, A_DEFFLOAT, 0);
-
- class_addmethod(pdf_class, nullfn, gensym("signal"), 0);
- class_addmethod(pdf_class, (t_method)pdf_dsp, gensym("dsp"), 0);
-
- class_addmethod(pdf_class, (t_method)pdf_bang, gensym("bang"), 0);
- class_addmethod(pdf_class, (t_method)clear_pdfbuf, gensym("clear"), 0);
- class_addfloat(pdf_class, pdf_float);
-
- class_addmethod(pdf_class, (t_method)helper, gensym("help"), 0);
- class_sethelpsymbol(pdf_class, gensym("zexy/pdf~"));
-}