/*
* 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 an ASCII art object replacing blocks with ASCII characters
* Written by Yves Degoyon ( ydegoyon@free.fr )
*/
#include "pdp.h"
#include "yuv.h"
#include "charmaps.h"
#include <math.h>
static char *pdp_ascii_version = "pdp_ascii: version 0.1, ASCII art output written by ydegoyon@free.fr";
typedef struct pdp_ascii_struct
{
t_object x_obj;
t_float x_f;
t_int x_packet0;
t_int x_packet1;
t_int x_dropped;
t_int x_queue_id;
t_outlet *x_outlet0;
t_int x_vwidth;
t_int x_vheight;
t_int x_vsize;
t_int x_color; // rendering color option
t_int x_brightness; // added value for brightness
t_float x_ratio; // character to pixel ratio
} t_pdp_ascii;
static void pdp_ascii_color(t_pdp_ascii *x, t_floatarg fcolor)
{
if ( ((int)fcolor == 0) || ((int)fcolor == 1) )
{
x->x_color = (int)fcolor;
}
}
static void pdp_ascii_ratio(t_pdp_ascii *x, t_floatarg fratio)
{
if ( ( fratio > 0) && ( x->x_ratio < x->x_vwidth/2 ) )
{
x->x_ratio = fratio;
}
}
static void pdp_ascii_brightness(t_pdp_ascii *x, t_floatarg fbrightness)
{
if ( ((int)fbrightness > 0) && ((int)fbrightness < 255) )
{
x->x_brightness = (int)fbrightness;
}
}
static void pdp_ascii_process_yv12(t_pdp_ascii *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);
t_int i, pixsum;
t_int px, py, ppx, ppy;
t_int rank, value;
t_int pwidth, pheight;
x->x_vwidth = header->info.image.width;
x->x_vheight = header->info.image.height;
x->x_vsize = x->x_vwidth*x->x_vheight;
newheader->info.image.encoding = header->info.image.encoding;
newheader->info.image.width = x->x_vwidth;
newheader->info.image.height = x->x_vheight;
memset( newdata, 0x00, (x->x_vsize+(x->x_vsize>>1))<<1 );
pwidth = (int) CHARWIDTH*x->x_ratio;
if (pwidth==0) pwidth=1;
if (pwidth>x->x_vwidth) return;
pheight = (int) CHARHEIGHT*x->x_ratio;
if (pheight==0) pheight=1;
if (pheight>x->x_vheight) return;
for(py=1; py<x->x_vheight; py+=pheight)
{
for(px=0; px<x->x_vwidth; px+=pwidth)
{
pixsum = 0;
for ( ppy=0; ppy<pheight; ppy++ )
{
for ( ppx=0; ppx<pwidth; ppx++ )
{
pixsum += (data[(py+ppy)*x->x_vwidth + (px+ppx)]>>7);
}
}
rank = (pixsum/(pheight*pwidth))/2; // set the chosen character
for ( ppy=0; ppy<pheight; ppy++ )
{
for ( ppx=0; ppx<pwidth; ppx++ )
{
if ( ( px+ppx > x->x_vwidth ) ||
( py+ppy > x->x_vheight ) )
{
break;
}
if ( charmaps[rank][((int)(ppy/x->x_ratio))*CHARWIDTH+((int)(ppx/x->x_ratio))] )
{
value = ( (2*rank+x->x_brightness) > 255 ) ? 255 : (2*rank+x->x_brightness);
newdata[(py+ppy)*x->x_vwidth+(px+ppx)] = (value)<<7;
if ( x->x_color )
{
newdata[x->x_vsize+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)] =
data[x->x_vsize+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)];
newdata[x->x_vsize+(x->x_vsize>>2)+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)] =
data[x->x_vsize+(x->x_vsize>>2)+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)];
}
}
}
}
}
}
return;
}
static void pdp_ascii_sendpacket(t_pdp_ascii *x)
{
/* delete source 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_outlet0, &x->x_packet1);
}
static void pdp_ascii_process(t_pdp_ascii *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_ascii_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_ascii_process_yv12, pdp_ascii_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_ascii_process */
break;
}
}
}
static void pdp_ascii_input_0(t_pdp_ascii *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))
{
/* add the process method and callback to the process queue */
pdp_ascii_process(x);
}
}
static void pdp_ascii_free(t_pdp_ascii *x)
{
int i;
pdp_queue_finish(x->x_queue_id);
pdp_packet_mark_unused(x->x_packet0);
}
t_class *pdp_ascii_class;
void *pdp_ascii_new(void)
{
int i;
t_pdp_ascii *x = (t_pdp_ascii *)pd_new(pdp_ascii_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ratio"));
x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
x->x_packet0 = -1;
x->x_packet1 = -1;
x->x_queue_id = -1;
x->x_color = 1;
x->x_ratio = 1.;
x->x_brightness = 25;
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_ascii_setup(void)
{
// post( pdp_ascii_version );
pdp_ascii_class = class_new(gensym("pdp_ascii"), (t_newmethod)pdp_ascii_new,
(t_method)pdp_ascii_free, sizeof(t_pdp_ascii), 0, A_NULL);
class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_color, gensym("color"), A_DEFFLOAT, A_NULL);
class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_brightness, gensym("brightness"), A_DEFFLOAT, A_NULL);
class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_ratio, gensym("ratio"), A_DEFFLOAT, A_NULL);
class_sethelpsymbol( pdp_ascii_class, gensym("pdp_ascii.pd") );
}
#ifdef __cplusplus
}
#endif