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/*
* Pure Data Packet module.
* Copyright (c) 2003 by Tom Schouten <tom@zwizwa.be>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <math.h>
#include "pdp.h"
#include "pdp_base.h"
typedef struct _pdp_array
{
t_object x_obj;
t_symbol *x_array_sym;
t_outlet *x_outlet0; // for array->pdp
t_int x_rows; // transposed
/* packet creation */
t_int x_width;
t_int x_height;
/* only valid after "get array" */
float *x_vec;
int x_nbpoints;
/* the packet */
int x_packet0;
} t_pdp_array;
static void get_array(t_pdp_array *x){
t_garray *a;
x->x_vec = 0;
/* dump to array if possible */
if (!x->x_array_sym) return;
/* check if array is valid */
if (!(a = (t_garray *)pd_findbyclass(x->x_array_sym, garray_class))){
post("pdp_array: %s: no such array", x->x_array_sym->s_name);
return;
}
/* get data */
if (!garray_getfloatarray(a, &x->x_nbpoints, &x->x_vec)){
post("pdp_array: %s: bad template", x->x_array_sym->s_name);
return;
}
}
static void pdp_array_bang(t_pdp_array *x)
{
PDP_ASSERT(-1 == x->x_packet0);
x->x_packet0 = pdp_packet_new_image_grey(x->x_width, x->x_height);
if (-1 != x->x_packet0){
t_pdp *header = pdp_packet_header(x->x_packet0);
short int *data = (short int*)pdp_packet_data(x->x_packet0);
get_array(x);
if (x->x_vec){
int i;
int w = header->info.image.width;
int h = header->info.image.height;
int N = w*h;
N = (x->x_nbpoints < N) ? x->x_nbpoints : N;
/* scan rows */
if (1 || x->x_rows){
// FIXME: saturation
for (i=0; i<N; i++) {
float max = (float)0x8000;
float f = x->x_vec[i] * max;
int l = (int)f;
l = (l > 0x8000) ? 0x7fff : l;
l = (l < -0x8000) ? -0x8000 : l;
data[i] = (short int)l;
}
}
}
pdp_packet_pass_if_valid(x->x_outlet0, &x->x_packet0);
}
}
static void pdp_array_input_0(t_pdp_array *x, t_symbol *s, t_floatarg f)
{
int packet = (int)f;
/* register */
if (s == gensym("register_ro")){
/* replace if not compatible or we are not interpolating */
pdp_packet_mark_unused(x->x_packet0);
x->x_packet0 = pdp_packet_convert_ro(packet, pdp_gensym("image/grey/*"));
}
/* process */
if (s == gensym("process")){
t_garray *a;
t_pdp *header = pdp_packet_header(x->x_packet0);
short int *data = pdp_packet_data(x->x_packet0);
if (!header || !data) return;
get_array(x);
if (x->x_vec){
int i;
int w = header->info.image.width;
int h = header->info.image.height;
int N = w*h;
N = (x->x_nbpoints < N) ? x->x_nbpoints : N;
/* scan rows */
if (x->x_rows){
for (i=0; i<N; i++)
x->x_vec[i] = (float)data[i] * (1.0f / (float)0x8000);
}
/* scan columns */
else{
for (i=0; i<N; i++) {
int xx = i / h;
int yy = i % h;
x->x_vec[i] = (float)data[xx+(h-yy-1)*w] * (1.0f / (float)0x8000);
}
}
}
}
}
static void pdp_array_array(t_pdp_array *x, t_symbol *s)
{
//post("setting symbol %x", s);
x->x_array_sym = s;
x->x_packet0 = -1;
}
static void pdp_array_free(t_pdp_array *x)
{
pdp_packet_mark_unused(x->x_packet0);
}
t_class *pdp_array2grey_class;
t_class *pdp_grey2array_class;
void *pdp_array2grey_new(t_symbol *s, t_symbol *r)
{
t_pdp_array *x = (t_pdp_array *)pd_new(pdp_array2grey_class);
pdp_array_array(x, s);
x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
x->x_width = 320;
x->x_height = 240;
return (void *)x;
}
void *pdp_grey2array_new(t_symbol *s, t_symbol *r)
{
t_pdp_array *x = (t_pdp_array *)pd_new(pdp_grey2array_class);
pdp_array_array(x, s);
if (r == gensym("rows")){
x->x_rows = 1;
post("pdp_grey2array: scanning rows");
}
else {
x->x_rows = 0;
post("pdp_grey2array: scanning columns");
}
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_array_setup(void)
{
pdp_array2grey_class = class_new(gensym("pdp_array2grey"),
(t_newmethod)pdp_array2grey_new,
(t_method)pdp_array_free,
sizeof(t_pdp_array),
0, A_DEFSYMBOL, A_DEFSYMBOL, A_NULL);
pdp_grey2array_class = class_new(gensym("pdp_grey2array"),
(t_newmethod)pdp_grey2array_new,
(t_method)pdp_array_free,
sizeof(t_pdp_array),
0, A_DEFSYMBOL, A_DEFSYMBOL, A_NULL);
/* packet input */
class_addmethod(pdp_grey2array_class,
(t_method)pdp_array_input_0,
gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
/* bang method */
class_addmethod(pdp_array2grey_class,
(t_method)pdp_array_bang, gensym("bang"), A_NULL);
/* bookkeeping */
class_addmethod(pdp_array2grey_class, (t_method)pdp_array_array,
gensym("array"), A_SYMBOL, A_NULL);
class_addmethod(pdp_grey2array_class, (t_method)pdp_array_array,
gensym("array"), A_SYMBOL, A_NULL);
}
#ifdef __cplusplus
}
#endif
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