diff options
Diffstat (limited to 'src/pdf_tilde.c')
-rw-r--r-- | src/pdf_tilde.c | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/src/pdf_tilde.c b/src/pdf_tilde.c deleted file mode 100644 index ef06a59..0000000 --- a/src/pdf_tilde.c +++ /dev/null @@ -1,140 +0,0 @@ -/****************************************************** - * - * zexy - implementation file - * - * copyleft (c) IOhannes m zmölnig - * - * 1999:forum::für::umläute:2004 - * - * institute of electronic music and acoustics (iem) - * - ****************************************************** - * - * license: GNU General Public License v.2 - * - ******************************************************/ - -/* get the ProbabilityDensityFunction of a signal */ - -#include "zexy.h" - -/* ------------------------ 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 iindex = ((f + 1.0) * halfsize)+0.5; - buf[(iindex<0)?0:((iindex>=x->size)?x->size-1:iindex)]+=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 pdf_tilde_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~")); - zexy_register("pdf~"); -} |