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/* copyleft (c) 2003 forum::für::umläute -- IOhannes m zmölnig @ IEM
* based on d_array.c from pd:
* Copyright (c) 1997-1999 Miller Puckette and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
/* sampling */
#include "iem16_table.h"
static void table16_const(t_table16*x, t_float f);
static void *table16_new(t_symbol *s, t_float f){
t_table16 *x = (t_table16*)pd_new(table16_class);
int i=f;
if(i<1)i=100;
x->x_tablename=s;
x->x_size=i;
x->x_table=getbytes(x->x_size*sizeof(t_iem16_16bit));
x->x_usedindsp=0;
pd_bind(&x->x_obj.ob_pd, x->x_tablename);
table16_const(x, 0);
return(x);
}
static void table16_free(t_table16 *x){
if(x->x_table)freebytes(x->x_table, x->x_size*sizeof(t_iem16_16bit));
pd_unbind(&x->x_obj.ob_pd, x->x_tablename);
}
int table16_getarray16(t_table16*x, int*size,t_iem16_16bit**vec){
*size=x->x_size;
*vec =x->x_table;
return 1;
}
void table16_usedindsp(t_table16*x){
x->x_usedindsp=1;
}
static void table16_resize(t_table16*x, t_float f){
int i=f;
int was=x->x_size;
if (i<1){
error("can only resize to sizes >0");
return;
}
x->x_table=resizebytes(x->x_table, was*sizeof(t_iem16_16bit), i*sizeof(t_iem16_16bit));
if(i>was)memset(x->x_table+was, 0, (i-was)*sizeof(t_iem16_16bit));
x->x_size =i;
if (x->x_usedindsp) canvas_update_dsp();
}
static void table16_const(t_table16*x, t_float f){
t_iem16_16bit s = (t_iem16_16bit)f;
int i = x->x_size;
t_iem16_16bit*buf=x->x_table;
while(i--)*buf++=s;
}
static void table16_from(t_table16*x, t_symbol*s, int argc, t_atom*argv){
float scale=IEM16_SCALE_UP;
int resize=0;
int startfrom=0, startto=0, endfrom=0, endto=x->x_size;
t_garray *a=0;
int npoints;
t_float *vec, *src;
t_iem16_16bit *dest;
int i,length=0;
if(argc<1 || argv->a_type!=A_SYMBOL){
error("you have to specify the from-table !");
return;
}
s=atom_getsymbol(argv); argc--;argv++;
if (!(a = (t_garray *)pd_findbyclass(s, garray_class))){
error("%s: no such array", s->s_name);
return;
} else if (!garray_getfloatarray(a, &npoints, &vec)){
error("%s: bad template for tabread4", s->s_name);
return;
}
if(argc>0 && atom_getsymbol(argv+argc-1)==gensym("resize")){
resize=1;
argc--;
}
endfrom=npoints;
switch(argc){
case 0:break;
case 4:
endto =atom_getfloat(argv+3);
case 3:
startto =atom_getfloat(argv+2);
case 2:
endfrom =atom_getfloat(argv+1);
case 1:
startfrom=atom_getfloat(argv);
break;
default:
error("table16: from <tablename> [<startfrom> [<endfrom> [<startto> [<endto>]]]] [resize]");
return;
}
if(startfrom<0)startfrom=0;
if (startto<0)startto=0;
if(endfrom<=startfrom)return;
if(endto <=startto) return;
length=endfrom-startfrom;
if(resize){
if(x->x_size < (startto+length))table16_resize(x, startto+length);
} else{
if(x->x_size < (startto+length))length=x->x_size-startto;
}
endfrom=startfrom+length;
endto =startto+length;
dest=x->x_table+startto;
src =vec+startfrom;
i=length;
while(i--)*dest++=(*src++)*scale;
post("from %s (%d, %d) --> (%d, %d)\tresize=%s", s->s_name, startfrom, endfrom, startto, endto, (resize)?"yes":"no");
}
static void table16_setup(void){
table16_class = class_new(gensym("table16"),
(t_newmethod)table16_new, (t_method)table16_free,
sizeof(t_table16), 0, A_DEFSYM, A_DEFFLOAT, 0);
class_addmethod(table16_class, (t_method)table16_resize, gensym("resize"), A_DEFFLOAT);
class_addmethod(table16_class, (t_method)table16_const, gensym("const"), A_DEFFLOAT);
class_addmethod(table16_class, (t_method)table16_from, gensym("from"), A_GIMME);
}
void iem16_table_setup(void)
{
table16_setup();
}
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