diff options
Diffstat (limited to 'src/tab_powtodb.c')
| -rw-r--r-- | src/tab_powtodb.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/src/tab_powtodb.c b/src/tab_powtodb.c new file mode 100644 index 0000000..a8fd638 --- /dev/null +++ b/src/tab_powtodb.c @@ -0,0 +1,184 @@ +/* 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 - 2010 */ + +#include "m_pd.h" +#include "iemlib.h" +#include "iem_tab.h" +#include <math.h> + +#define IEMTABLOGTEN 2.302585092994046 + +/* -------------------------- tab_powtodb ------------------------------ */ +/* x_beg_mem_dst[i] = sqrt(x_beg_mem_src1[i]) */ + +typedef struct _tab_powtodb +{ + t_object x_obj; + int x_size_src1; + int x_size_dst; + int x_offset_src1; + int x_offset_dst; + iemarray_t *x_beg_mem_src1; + iemarray_t *x_beg_mem_dst; + t_symbol *x_sym_scr1; + t_symbol *x_sym_dst; +} t_tab_powtodb; + +static t_class *tab_powtodb_class; + +static void tab_powtodb_src(t_tab_powtodb *x, t_symbol *s) +{ + x->x_sym_scr1 = s; +} + +static void tab_powtodb_dst(t_tab_powtodb *x, t_symbol *s) +{ + x->x_sym_dst = s; +} + +static void tab_powtodb_bang(t_tab_powtodb *x) +{ + int i, n; + int ok_src, ok_dst; + iemarray_t *vec_src, *vec_dst; + + ok_src = iem_tab_check_arrays(gensym("tab_powtodb"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, 0); + ok_dst = iem_tab_check_arrays(gensym("tab_powtodb"), 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; + + for(i=0; i<n; i++) + { + t_float f = iemarray_getfloat(vec_src, i); + + if(f <= 0.0) + iemarray_setfloat(vec_dst, i, 0.0); + else + { + t_float g = 100.0 + 10.0/IEMTABLOGTEN * log(f); + + iemarray_setfloat(vec_dst, i, g < 0.0 ? 0.0 : g); + } + } + outlet_bang(x->x_obj.ob_outlet); + a = (t_garray *)pd_findbyclass(x->x_sym_dst, garray_class); + garray_redraw(a); + } + } +} + +static void tab_powtodb_list(t_tab_powtodb *x, t_symbol *s, int argc, t_atom *argv) +{ + int beg_src, beg_dst; + int i, n; + int ok_src, ok_dst; + iemarray_t *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_powtodb"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, beg_src+n); + ok_dst = iem_tab_check_arrays(gensym("tab_powtodb"), 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; + + for(i=0; i<n; i++) + { + t_float f = iemarray_getfloat(vec_src, i); + + if(f <= 0.0) + iemarray_setfloat(vec_dst, i, 0.0); + else + { + t_float g = 100.0 + 10.0/IEMTABLOGTEN * log(f); + + iemarray_setfloat(vec_dst, i, g < 0.0 ? 0.0 : g); + } + } outlet_bang(x->x_obj.ob_outlet); + a = (t_garray *)pd_findbyclass(x->x_sym_dst, garray_class); + garray_redraw(a); + } + } + } + else + { + post("tab_powtodb-ERROR: list need 3 float arguments:"); + post(" source_offset + destination_offset + number_of_samples_to_sqrt"); + } +} + +static void tab_powtodb_free(t_tab_powtodb *x) +{ +} + +static void *tab_powtodb_new(t_symbol *s, int argc, t_atom *argv) +{ + t_tab_powtodb *x = (t_tab_powtodb *)pd_new(tab_powtodb_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_powtodb-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_powtodb_setup(void) +{ + tab_powtodb_class = class_new(gensym("tab_powtodb"), (t_newmethod)tab_powtodb_new, (t_method)tab_powtodb_free, + sizeof(t_tab_powtodb), 0, A_GIMME, 0); + class_addbang(tab_powtodb_class, (t_method)tab_powtodb_bang); + class_addlist(tab_powtodb_class, (t_method)tab_powtodb_list); + class_addmethod(tab_powtodb_class, (t_method)tab_powtodb_src, gensym("src"), A_DEFSYMBOL, 0); + class_addmethod(tab_powtodb_class, (t_method)tab_powtodb_src, gensym("src1"), A_DEFSYMBOL, 0); + class_addmethod(tab_powtodb_class, (t_method)tab_powtodb_dst, gensym("dst"), A_DEFSYMBOL, 0); +} |