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/*
* PiDiP module.
* Copyright (c) by Yves Degoyon (ydegoyon@free.fr)
*
* 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 "pdp.h"
#include <math.h>
static char *pdp_hue_version = "pdp_hue: version 0.1, frame hue estimator, written by Yves Degoyon (ydegoyon@free.fr)";
typedef struct pdp_hue_struct
{
t_object x_obj;
t_float x_f;
t_outlet *x_meanr;
t_outlet *x_meang;
t_outlet *x_meanb;
int x_packet0;
int x_dropped;
int x_queue_id;
int x_vwidth;
int x_vheight;
int x_vsize;
unsigned int x_encoding;
} t_pdp_hue;
static void pdp_hue_process_rgb(t_pdp_hue *x)
{
t_pdp *header = pdp_packet_header(x->x_packet0);
unsigned char *data = (unsigned char*)pdp_packet_data(x->x_packet0);
int i;
int px, py;
unsigned char *sr, *sg, *sb;
double meanr=0, meang=0, meanb=0;
int nbpixs=0;
/* allocate all ressources */
x->x_vwidth = header->info.image.width;
x->x_vheight = header->info.image.height;
x->x_vsize = x->x_vwidth*x->x_vheight;
x->x_encoding = header->info.image.encoding;
sr = data;
meanr = 0.; meang = 0.; meanb =0.;
for(py=0; py<x->x_vheight; py++)
{
for(px=0; px<x->x_vwidth; px++)
{
meanr += (double)*(sr);
meang += (double)*(sr+1);
meanb += (double)*(sr+2);
sr+=3;
nbpixs++;
}
}
if ( nbpixs > 0 )
{
meanr = meanr / nbpixs;
meang = meang / nbpixs;
meanb = meanb / nbpixs;
}
outlet_float( x->x_meanr, (t_float)meanr );
outlet_float( x->x_meang, (t_float)meang );
outlet_float( x->x_meanb, (t_float)meanb );
return;
}
static void pdp_hue_killpacket(t_pdp_hue *x)
{
/* release the packet */
pdp_packet_mark_unused(x->x_packet0);
x->x_packet0 = -1;
}
static void pdp_hue_process(t_pdp_hue *x)
{
int encoding;
t_pdp *header = 0;
/* check if image data packets are compatible */
if ( (header = pdp_packet_header(x->x_packet0))
&& (PDP_BITMAP == header->type))
{
/* pdp_hue_process inputs and write into active inlet */
switch(pdp_packet_header(x->x_packet0)->info.image.encoding){
case PDP_BITMAP_RGB:
pdp_queue_add(x, pdp_hue_process_rgb, pdp_hue_killpacket, &x->x_queue_id);
break;
default:
/* don't know the type, so dont pdp_hue_process */
break;
}
}
}
static void pdp_hue_input_0(t_pdp_hue *x, t_symbol *s, t_floatarg f)
{
/* if this is a register_ro message or register_rw message, register with packet factory */
if (s== gensym("register_rw"))
x->x_dropped = pdp_packet_convert_ro_or_drop(&x->x_packet0, (int)f, pdp_gensym("bitmap/rgb/*") );
if ((s == gensym("process")) && (-1 != x->x_packet0) && (!x->x_dropped)){
/* add the process method and callback to the process queue */
pdp_hue_process(x);
}
}
static void pdp_hue_free(t_pdp_hue *x)
{
int i;
pdp_queue_finish(x->x_queue_id);
pdp_packet_mark_unused(x->x_packet0);
}
t_class *pdp_hue_class;
void *pdp_hue_new(void)
{
int i;
t_pdp_hue *x = (t_pdp_hue *)pd_new(pdp_hue_class);
x->x_meanr = outlet_new(&x->x_obj, &s_float);
x->x_meang = outlet_new(&x->x_obj, &s_float);
x->x_meanb = outlet_new(&x->x_obj, &s_float);
x->x_packet0 = -1;
x->x_queue_id = -1;
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_hue_setup(void)
{
// post( pdp_hue_version );
pdp_hue_class = class_new(gensym("pdp_hue"), (t_newmethod)pdp_hue_new,
(t_method)pdp_hue_free, sizeof(t_pdp_hue), 0, A_NULL);
class_addmethod(pdp_hue_class, (t_method)pdp_hue_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
}
#ifdef __cplusplus
}
#endif
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