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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.
*
*/
/* This object is a salience distance operator
* ( inspired by Paul Rosin, 91, http://www.cs.cf.ac.uk/User/Paul.Rosin/resources/sdt/ )
*/
#include "pdp.h"
#include "yuv.h"
#include <math.h>
#include <stdio.h>
static char *pdp_distance_version = "pdp_distance: morphology : distance operator version 0.1 written by Yves Degoyon (ydegoyon@free.fr)";
typedef struct pdp_distance_struct
{
t_object x_obj;
int x_packet0;
int x_packet1;
int x_queue_id;
int x_dropped;
int x_vwidth;
int x_vheight;
int x_vsize;
short int *x_frame; // keep a copy of current frame for transformations
int x_coeff1;
int x_coeff2;
int x_coeff3;
int x_coeff4;
t_outlet *x_pdp_output; // output packets
} t_pdp_distance;
static void pdp_distance_allocate(t_pdp_distance *x)
{
x->x_frame = (short int *) getbytes ( ( x->x_vsize + ( x->x_vsize>>1 ) ) << 1 );
if ( !x->x_frame )
{
post( "pdp_distance : severe error : cannot allocate buffer !!! ");
return;
}
}
static void pdp_distance_coeff1(t_pdp_distance *x, t_floatarg fcoeff1 )
{
x->x_coeff1 = (int) fcoeff1;
}
static void pdp_distance_coeff2(t_pdp_distance *x, t_floatarg fcoeff2 )
{
x->x_coeff2 = (int) fcoeff2;
}
static void pdp_distance_coeff3(t_pdp_distance *x, t_floatarg fcoeff3 )
{
x->x_coeff3 = (int) fcoeff3;
}
static void pdp_distance_coeff4(t_pdp_distance *x, t_floatarg fcoeff4 )
{
x->x_coeff4 = (int) fcoeff4;
}
static void pdp_distance_free_ressources(t_pdp_distance *x)
{
if ( x->x_frame ) freebytes ( x->x_frame, ( x->x_vsize + ( x->x_vsize>>1 ) ) << 1 );
}
static void pdp_distance_process_yv12(t_pdp_distance *x)
{
t_pdp *header = pdp_packet_header(x->x_packet0);
short int *data = (short int *)pdp_packet_data(x->x_packet0);
t_pdp *newheader = pdp_packet_header(x->x_packet1);
short int *newdata = (short int *)pdp_packet_data(x->x_packet1);
int i;
int px=0, py=0;
short int *pfY, *pfU, *pfV;
int nvalues, values[5], ival, mval;
// allocate all ressources
if ( ( (int)header->info.image.width != x->x_vwidth ) ||
( (int)header->info.image.height != x->x_vheight ) )
{
pdp_distance_free_ressources( x );
x->x_vwidth = header->info.image.width;
x->x_vheight = header->info.image.height;
x->x_vsize = x->x_vwidth*x->x_vheight;
pdp_distance_allocate( x );
post( "pdp_distance : reallocated buffers" );
}
// post( "pdp_distance : newheader:%x", newheader );
newheader->info.image.encoding = header->info.image.encoding;
newheader->info.image.width = x->x_vwidth;
newheader->info.image.height = x->x_vheight;
memcpy( newdata, data, x->x_vsize+(x->x_vsize>>1)<<1 );
memcpy( x->x_frame, data, x->x_vsize+(x->x_vsize>>1)<<1 );
pfY = x->x_frame;
pfV = x->x_frame+x->x_vsize;
pfU = x->x_frame+x->x_vsize+(x->x_vsize>>2);
// thresholding
for ( py=0; py<x->x_vheight; py++ )
{
for ( px=0; px<x->x_vwidth; px++ )
{
if ( *(pfY+py*x->x_vwidth+px) > ((128)<<7) )
{
*(pfY+py*x->x_vwidth+px) = ((128)<<7);
}
}
}
// forward pass
for ( py=0; py<x->x_vheight; py++ )
{
for ( px=0; px<x->x_vwidth; px++ )
{
nvalues = 0;
if ( ((px-1)>=0) && ((py-1)>=0) )
{
values[nvalues] = *(pfY+(py-1)*x->x_vwidth+(px-1)) + (x->x_coeff1<<7);
nvalues++;
}
if ( (py-1)>=0 )
{
values[nvalues] = *(pfY+(py-1)*x->x_vwidth+px) + (x->x_coeff2<<7);
nvalues++;
}
if ( ((px+1)<x->x_vwidth) && ((py-1)>=0) )
{
values[nvalues] = *(pfY+(py-1)*x->x_vwidth+(px+1)) + (x->x_coeff3<<7);
nvalues++;
}
if ( (px-1)>=0 )
{
values[nvalues] = *(pfY+py*x->x_vwidth+(px-1)) + (x->x_coeff4<<7);
nvalues++;
}
values[nvalues] = *(pfY+py*x->x_vwidth+px);
nvalues++;
mval = values[0];
for (ival=0; ival<nvalues; ival++)
{
if (values[ival]<mval) mval=values[ival];
}
*(x->x_frame+py*x->x_vwidth+px)=mval;
}
}
// backward pass
for ( py=x->x_vheight-1; py>=0; py-- )
{
for ( px=x->x_vwidth-1; px>=0; px-- )
{
nvalues = 0;
if ( ((px-1)>=0) && ((py+1)<x->x_vheight) )
{
values[nvalues] = *(pfY+(py+1)*x->x_vwidth+(px-1)) + (x->x_coeff1<<7);
nvalues++;
}
if ( (py+1)<x->x_vheight )
{
values[nvalues] = *(pfY+(py+1)*x->x_vwidth+px) + (x->x_coeff2<<7);
nvalues++;
}
if ( ((px+1)<x->x_vwidth) && ((py+1)<x->x_vheight) )
{
values[nvalues] = *(pfY+(py+1)*x->x_vwidth+(px+1)) + (x->x_coeff3<<7);
nvalues++;
}
if ( (px+1)<x->x_vwidth )
{
values[nvalues] = *(pfY+py*x->x_vwidth+(px+1)) + (x->x_coeff4<<7);
nvalues++;
}
values[nvalues] = *(pfY+py*x->x_vwidth+px);
nvalues++;
mval = values[0];
for (ival=0; ival<nvalues; ival++)
{
if (values[ival]<mval) mval=values[ival];
}
*(x->x_frame+py*x->x_vwidth+px)=mval;
}
}
memcpy( newdata, x->x_frame, x->x_vsize+(x->x_vsize>>1)<<1 );
return;
}
static void pdp_distance_sendpacket(t_pdp_distance *x)
{
/* release the packet */
pdp_packet_mark_unused(x->x_packet0);
x->x_packet0 = -1;
/* unregister and propagate if valid dest packet */
pdp_packet_pass_if_valid(x->x_pdp_output, &x->x_packet1);
}
static void pdp_distance_process(t_pdp_distance *x)
{
int encoding;
t_pdp *header = 0;
/* check if image data packets are compatible */
if ( (header = pdp_packet_header(x->x_packet0))
&& (PDP_IMAGE == header->type)){
/* pdp_distance_process inputs and write into active inlet */
switch(pdp_packet_header(x->x_packet0)->info.image.encoding)
{
case PDP_IMAGE_YV12:
x->x_packet1 = pdp_packet_clone_rw(x->x_packet0);
pdp_queue_add(x, pdp_distance_process_yv12, pdp_distance_sendpacket, &x->x_queue_id);
break;
case PDP_IMAGE_GREY:
// should write something to handle these one day
// but i don't use this mode
break;
default:
/* don't know the type, so dont pdp_distance_process */
break;
}
}
}
static void pdp_distance_input_0(t_pdp_distance *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("image/YCrCb/*") );
}
if ((s == gensym("process")) && (-1 != x->x_packet0) && (!x->x_dropped))
{
pdp_distance_process(x);
}
}
static void pdp_distance_free(t_pdp_distance *x)
{
int i;
pdp_packet_mark_unused(x->x_packet0);
pdp_distance_free_ressources( x );
}
t_class *pdp_distance_class;
void *pdp_distance_new(void)
{
int i;
t_pdp_distance *x = (t_pdp_distance *)pd_new(pdp_distance_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("coeff1"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("coeff2"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("coeff3"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("coeff4"));
x->x_pdp_output = outlet_new(&x->x_obj, &s_anything);
x->x_packet0 = -1;
x->x_packet1 = -1;
x->x_vwidth = -1;
x->x_vheight = -1;
x->x_vsize = -1;
x->x_frame = NULL;
x->x_coeff1 = 4;
x->x_coeff2 = 3;
x->x_coeff3 = 4;
x->x_coeff4 = 3;
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_distance_setup(void)
{
// post( pdp_distance_version );
pdp_distance_class = class_new(gensym("pdp_distance"), (t_newmethod)pdp_distance_new,
(t_method)pdp_distance_free, sizeof(t_pdp_distance), 0, A_NULL);
class_addmethod(pdp_distance_class, (t_method)pdp_distance_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
class_addmethod(pdp_distance_class, (t_method)pdp_distance_coeff1, gensym("coeff1"), A_DEFFLOAT, A_NULL);
class_addmethod(pdp_distance_class, (t_method)pdp_distance_coeff2, gensym("coeff2"), A_DEFFLOAT, A_NULL);
class_addmethod(pdp_distance_class, (t_method)pdp_distance_coeff3, gensym("coeff3"), A_DEFFLOAT, A_NULL);
class_addmethod(pdp_distance_class, (t_method)pdp_distance_coeff4, gensym("coeff4"), A_DEFFLOAT, A_NULL);
class_sethelpsymbol( pdp_distance_class, gensym("pdp_distance.pd") );
}
#ifdef __cplusplus
}
#endif
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