diff options
Diffstat (limited to 'src/tab_max_index.c')
| -rw-r--r-- | src/tab_max_index.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/tab_max_index.c b/src/tab_max_index.c new file mode 100644 index 0000000..d8e9bd9 --- /dev/null +++ b/src/tab_max_index.c @@ -0,0 +1,155 @@ +/* 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> + + +/* -------------------------- tab_max_index ------------------------------ */ + +typedef struct _tab_max_index +{ + t_object x_obj; + int x_size_src1; + int x_offset_src1; + float *x_beg_mem_src1; + t_symbol *x_sym_scr1; + void *x_bang_out; + void *x_max_out; + void *x_max_index_out; +} t_tab_max_index; + +static t_class *tab_max_index_class; + +static void tab_max_index_src(t_tab_max_index *x, t_symbol *s) +{ + x->x_sym_scr1 = s; +} + +static void tab_max_index_bang(t_tab_max_index *x) +{ + int i, n; + int ok_src, max_index=0; + t_float *vec_src; + t_float max=-1.0e37; + + ok_src = iem_tab_check_arrays(gensym("tab_max_index"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, 0); + + if(ok_src) + { + n = x->x_size_src1; + vec_src = x->x_beg_mem_src1; + if(n) + { + for(i=0; i<n; i++) + { + if(vec_src[i] > max) + { + max = vec_src[i]; + max_index = i; + } + } + outlet_float(x->x_max_out, max); + outlet_float(x->x_max_index_out, (float)max_index); + outlet_bang(x->x_bang_out); + } + } +} + +static void tab_max_index_list(t_tab_max_index *x, t_symbol *s, int argc, t_atom *argv) +{ + int beg_src; + int i, n; + int ok_src, max_index=0; + t_float *vec_src; + t_float max=-1.0e37; + + if((argc >= 2) && + IS_A_FLOAT(argv,0) && + IS_A_FLOAT(argv,1)) + { + beg_src = (int)atom_getintarg(0, argc, argv); + n = (int)atom_getintarg(1, argc, argv); + if(beg_src < 0) + beg_src = 0; + if(n < 0) + n = 0; + + ok_src = iem_tab_check_arrays(gensym("tab_max_index"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, beg_src+n); + + if(ok_src) + { + vec_src = x->x_beg_mem_src1 + beg_src; + if(n) + { + for(i=0; i<n; i++) + { + if(vec_src[i] > max) + { + max = vec_src[i]; + max_index = i + beg_src; + } + } + outlet_float(x->x_max_out, max); + outlet_float(x->x_max_index_out, (float)max_index); + outlet_bang(x->x_bang_out); + } + } + } + else + { + post("tab_max_index-ERROR: list need 2 float arguments:"); + post(" source_offset + number_of_samples_to_calc_max_index"); + } +} + +static void tab_max_index_free(t_tab_max_index *x) +{ +} + +static void *tab_max_index_new(t_symbol *s, int argc, t_atom *argv) +{ + t_tab_max_index *x = (t_tab_max_index *)pd_new(tab_max_index_class); + t_symbol *src; + + if((argc >= 1) && + IS_A_SYMBOL(argv,0)) + { + src = (t_symbol *)atom_getsymbolarg(0, argc, argv); + } + else + { + post("tab_max_index-ERROR: need 1 symbol argument:"); + post(" source_array_name"); + return(0); + } + + x->x_sym_scr1 = src; + x->x_bang_out = outlet_new(&x->x_obj, &s_bang); + x->x_max_index_out = outlet_new(&x->x_obj, &s_float); + x->x_max_out = outlet_new(&x->x_obj, &s_float); + return(x); +} + +void tab_max_index_setup(void) +{ + tab_max_index_class = class_new(gensym("tab_max_index"), (t_newmethod)tab_max_index_new, (t_method)tab_max_index_free, + sizeof(t_tab_max_index), 0, A_GIMME, 0); + class_addbang(tab_max_index_class, (t_method)tab_max_index_bang); + class_addlist(tab_max_index_class, (t_method)tab_max_index_list); + class_addmethod(tab_max_index_class, (t_method)tab_max_index_src, gensym("src"), A_DEFSYMBOL, 0); + class_addmethod(tab_max_index_class, (t_method)tab_max_index_src, gensym("src1"), A_DEFSYMBOL, 0); + class_sethelpsymbol(tab_max_index_class, gensym("iemhelp2/tab_max_index-help")); +} |