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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"
#include <stdlib.h>
#include <string.h>
#include <stdio.h> /* for read/write to files */
#if (defined(_MSC_VER) && (_MSC_VER > 600))
# define fdopen(fd,type) _fdopen(fd,type)
#endif
static int am_bigendian(void){
/* actually this should be in m_pd.h */
unsigned short s = 1;
unsigned char c = *(char *)(&s);
return (c==0);
}
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);
x->x_canvas = canvas_getcurrent();
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=(0), *src=(0);
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 defined __WIN32__ || defined __WIN32
// hmm, how do i import garray_class on w32??
error("ack, windows hit the wall...tell me how to see garray_class");
return;
#else
if (!(a = (t_garray *)pd_findbyclass(s, garray_class))){
error("%s: no such array", s->s_name);
return;
} else
#endif
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");
}
#define BINREADMODE "rb"
#define BINWRITEMODE "wb"
static void table16_read16(t_table16 *x, t_symbol *filename, t_symbol *endian, t_floatarg fskip)
{
int skip = fskip, filedesc;
int i, nelem;
t_iem16_16bit *vec;
FILE *fd;
char buf[MAXPDSTRING], *bufptr;
short s;
int cpubig = am_bigendian(), swap = 0;
char c = endian->s_name[0];
if (c == 'b')
{
if (!cpubig) swap = 1;
}
else if (c == 'l')
{
if (cpubig) swap = 1;
}
else if (c)
{
error("array_read16: endianness is 'l' (low byte first ala INTEL)");
post("... or 'b' (high byte first ala MIPS,DEC,PPC)");
}
if (!table16_getarray16(x, &nelem, &vec))
{
error("%s: not a 16bit array", x->x_tablename->s_name);
return;
}
if ((filedesc = open_via_path(
canvas_getdir(x->x_canvas)->s_name,
filename->s_name, "", buf, &bufptr, MAXPDSTRING, 1)) < 0
|| !(fd = fdopen(filedesc, BINREADMODE))
)
{
error("%s: can't open", filename->s_name);
return;
}
if (skip)
{
long pos = fseek(fd, (long)skip, SEEK_SET);
if (pos < 0)
{
error("%s: can't seek to byte %d", buf, skip);
fclose(fd);
return;
}
}
for (i = 0; i < nelem; i++)
{
if (fread(&s, sizeof(s), 1, fd) < 1)
{
post("%s: read %d elements into table of size %d",
filename->s_name, i, nelem);
break;
}
if (swap) s = ((s & 0xff) << 8) | ((s & 0xff00) >> 8);
vec[i] = s;
}
while (i < nelem) vec[i++] = 0;
fclose(fd);
}
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, 0);
class_addmethod(table16_class, (t_method)table16_const, gensym("const"), A_DEFFLOAT, 0);
class_addmethod(table16_class, (t_method)table16_from, gensym("from"), A_GIMME, 0);
class_addmethod(table16_class, (t_method)table16_read16, gensym("read16"), A_SYMBOL,
A_DEFFLOAT, A_DEFSYM, 0);
}
void iem16_table_setup(void)
{
table16_setup();
}
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