diff options
Diffstat (limited to 'src/tab_sin.c')
| -rw-r--r-- | src/tab_sin.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/src/tab_sin.c b/src/tab_sin.c deleted file mode 100644 index 308d575..0000000 --- a/src/tab_sin.c +++ /dev/null @@ -1,221 +0,0 @@ -/* For information on usage and redistribution, and for a DISCLAIMER OF ALL -* WARRANTIES, see the file, "LICENSE.txt," in this distribution. - -iem_tab 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 "iem_tab.h" -#include <math.h> -#include <stdio.h> -#include <string.h> - -#define TABDUMTAB1SIZE 256 -#define TABDUMTAB2SIZE 1024 - -static t_float tab_sin_exptab[TABDUMTAB1SIZE], tab_sin_mantissatab[TABDUMTAB2SIZE]; - -static void init_tab_sin(void) -{ - int i; - - for (i=0; i<TABDUMTAB1SIZE; i++) - { - t_float f; - long l = (i ? (i == TABDUMTAB1SIZE-1 ? TABDUMTAB1SIZE-2 : i) : 1)<< 23; - - *(long *)(&f) = l; - tab_sin_exptab[i] = 1.0f/sqrt(f); - } - - for (i=0; i<TABDUMTAB2SIZE; i++) - { - t_float f = 1.0f + (1.0f / (t_float)TABDUMTAB2SIZE) * (t_float)i; - - tab_sin_mantissatab[i] = 1.0f / sqrt(f); - } -} - - -/* -------------------------- tab_sin ------------------------------ */ - -typedef struct _tab_sin -{ - t_object x_obj; - int x_size_src1; - int x_size_dst; - int x_offset_src1; - int x_offset_dst; - float *x_beg_mem_src1; - float *x_beg_mem_dst; - t_symbol *x_sym_scr1; - t_symbol *x_sym_dst; -} t_tab_sin; - -static t_class *tab_sin_class; - -static void tab_sin_src(t_tab_sin *x, t_symbol *s) -{ - x->x_sym_scr1 = s; -} - -static void tab_sin_dst(t_tab_sin *x, t_symbol *s) -{ - x->x_sym_dst = s; -} - -static void tab_sin_bang(t_tab_sin *x) -{ - int i, n; - int ok_src, ok_dst; - t_float *vec_src, *vec_dst; - - ok_src = iem_tab_check_arrays(gensym("tab_sin"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, 0); - ok_dst = iem_tab_check_arrays(gensym("tab_sin"), x->x_sym_dst, &x->x_beg_mem_dst, &x->x_size_dst, 0); - - if(ok_src && ok_dst) - { - if(x->x_size_src1 < x->x_size_dst) - n = x->x_size_src1; - else - n = x->x_size_dst; - vec_src = x->x_beg_mem_src1; - vec_dst = x->x_beg_mem_dst; - if(n) - { - t_garray *a; - - while(n--) - { - t_float f = *vec_src; - long l = *(long *)(vec_src++); - - if(f < 0.0f) - *vec_dst++ = 0.0f; - else - { - t_float g = tab_sin_exptab[(l >> 23) & 0xff] * tab_sin_mantissatab[(l >> 13) & 0x3ff]; - - *vec_dst++ = f*g*(1.5f - 0.5f * g * g * f); - } - } - outlet_bang(x->x_obj.ob_outlet); - a = (t_garray *)pd_findbyclass(x->x_sym_dst, garray_class); - garray_redraw(a); - } - } -} - -static void tab_sin_list(t_tab_sin *x, t_symbol *s, int argc, t_atom *argv) -{ - int beg_src, beg_dst; - int i, n; - int ok_src, ok_dst; - t_float *vec_src, *vec_dst; - - if((argc >= 3) && - IS_A_FLOAT(argv,0) && - IS_A_FLOAT(argv,1) && - IS_A_FLOAT(argv,2)) - { - beg_src = (int)atom_getintarg(0, argc, argv); - beg_dst = (int)atom_getintarg(1, argc, argv); - n = (int)atom_getintarg(2, argc, argv); - if(beg_src < 0) - beg_src = 0; - if(beg_dst < 0) - beg_dst = 0; - if(n < 0) - n = 0; - - ok_src = iem_tab_check_arrays(gensym("tab_sin"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, beg_src+n); - ok_dst = iem_tab_check_arrays(gensym("tab_sin"), x->x_sym_dst, &x->x_beg_mem_dst, &x->x_size_dst, beg_dst+n); - - if(ok_src && ok_dst) - { - vec_src = x->x_beg_mem_src1 + beg_src; - vec_dst = x->x_beg_mem_dst + beg_dst; - if(n) - { - t_garray *a; - - while(n--) - { - t_float f = *vec_src; - long l = *(long *)(vec_src++); - - if(f < 0.0f) - *vec_dst++ = 0.0f; - else - { - t_float g = tab_sin_exptab[(l >> 23) & 0xff] * tab_sin_mantissatab[(l >> 13) & 0x3ff]; - - *vec_dst++ = f*g*(1.5f - 0.5f * g * g * f); - } - } - outlet_bang(x->x_obj.ob_outlet); - a = (t_garray *)pd_findbyclass(x->x_sym_dst, garray_class); - garray_redraw(a); - } - } - } - else - { - post("tab_sin-ERROR: list need 3 float arguments:"); - post(" source_offset + destination_offset + number_of_samples_to_sqrt"); - } -} - -static void tab_sin_free(t_tab_sin *x) -{ -} - -static void *tab_sin_new(t_symbol *s, int argc, t_atom *argv) -{ - t_tab_sin *x = (t_tab_sin *)pd_new(tab_sin_class); - t_symbol *src, *dst; - - if((argc >= 2) && - IS_A_SYMBOL(argv,0) && - IS_A_SYMBOL(argv,1)) - { - src = (t_symbol *)atom_getsymbolarg(0, argc, argv); - dst = (t_symbol *)atom_getsymbolarg(1, argc, argv); - } - else if((argc >= 1) && - IS_A_SYMBOL(argv,0)) - { - src = (t_symbol *)atom_getsymbolarg(0, argc, argv); - dst = src; - } - else - { - post("tab_sin-ERROR: need 2 symbols arguments:"); - post(" source_array_name + destination_array_name"); - return(0); - } - - x->x_sym_scr1 = src; - x->x_sym_dst = dst; - outlet_new(&x->x_obj, &s_bang); - return(x); -} - -void tab_sin_setup(void) -{ - init_tab_sin(); - tab_sin_class = class_new(gensym("tab_sin"), (t_newmethod)tab_sin_new, (t_method)tab_sin_free, - sizeof(t_tab_sin), 0, A_GIMME, 0); - class_addbang(tab_sin_class, (t_method)tab_sin_bang); - class_addlist(tab_sin_class, (t_method)tab_sin_list); - class_addmethod(tab_sin_class, (t_method)tab_sin_src, gensym("src"), A_DEFSYMBOL, 0); - class_addmethod(tab_sin_class, (t_method)tab_sin_src, gensym("src1"), A_DEFSYMBOL, 0); - class_addmethod(tab_sin_class, (t_method)tab_sin_dst, gensym("dst"), A_DEFSYMBOL, 0); - class_sethelpsymbol(tab_sin_class, gensym("iemhelp2/tab_sin-help")); -} |