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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 an adaptation of aging effect from effectv
* Originally written by Fukuchi Kentaro & others
* Pd-fication by Yves Degoyon
*/
#include "pdp.h"
#include <math.h>
static char *pdp_aging_version = "pdp_aging: version 0.1, port of aging from effectv( Fukuchi Kentaro ) adapted by Yves Degoyon (ydegoyon@free.fr)";
#define PDP_AGING_MAX_SCRATCHES 100
static unsigned int fastrand_val;
#define inline_fastrand() (fastrand_val=fastrand_val*1103515245+12345)
typedef struct _scratch
{
int life;
int x;
int dx;
int init;
} scratch;
typedef struct pdp_aging_struct
{
t_object x_obj;
t_float x_f;
t_outlet *x_outlet0;
int x_packet0;
int x_packet1;
int x_dropped;
int x_queue_id;
int x_vwidth;
int x_vheight;
int x_vsize;
int x_area_scale;
int x_nb_scratches;
int x_dusinterval;
int x_pits_interval;
scratch x_scratches[PDP_AGING_MAX_SCRATCHES];
} t_pdp_aging;
static void pdp_aging_area_scale(t_pdp_aging *x, t_floatarg fscale )
{
if ( (int) fscale > 1 )
{
x->x_area_scale = (int)fscale;
}
}
static void pdp_aging_scratches(t_pdp_aging *x, t_floatarg fscratches )
{
if ( ( (int)fscratches < PDP_AGING_MAX_SCRATCHES ) && ( (int)fscratches>=0) )
{
x->x_nb_scratches = (int)fscratches;
}
}
static void pdp_aging_coloraging(t_pdp_aging *x, short int *src, short int *dest)
{
short int a, b;
int i;
for(i=0; i<x->x_vsize; i++)
{
a = *src++;
b = (a & 0xfcfc)>>2;
*dest++ = a - b + 0x1818 + ((inline_fastrand()>>8)&0x1010);
}
// set all to b&w
for(i=x->x_vsize; i<( x->x_vsize + (x->x_vsize>>1) ); i++)
{
*dest++ = 0;
}
}
static void pdp_aging_scratching(t_pdp_aging *x, short int *dest)
{
int i, y, y1, y2;
short int *p, a, b;
const int width = x->x_vwidth;
const int height = x->x_vheight;
for(i=0; i<x->x_nb_scratches; i++)
{
if(x->x_scratches[i].life)
{
x->x_scratches[i].x = x->x_scratches[i].x + x->x_scratches[i].dx;
if(x->x_scratches[i].x < 0 || x->x_scratches[i].x > width*256)
{
x->x_scratches[i].life = 0;
break;
}
p = dest + (x->x_scratches[i].x>>8);
if(x->x_scratches[i].init)
{
y1 = x->x_scratches[i].init;
x->x_scratches[i].init = 0;
}
else
{
y1 = 0;
}
x->x_scratches[i].life--;
if(x->x_scratches[i].life)
{
y2 = height;
}
else
{
y2 = inline_fastrand() % height;
}
for(y=y1; y<y2; y++)
{
a = *p & 0xfeff;
a += 0x2020;
b = a & 0x10100;
*p = a | (b - (b>>8));
p += width;
}
}
else
{
if((inline_fastrand()&0xf0000000) == 0)
{
x->x_scratches[i].life = 2 + (inline_fastrand()>>27);
x->x_scratches[i].x = inline_fastrand() % (width * 256);
x->x_scratches[i].dx = ((int)inline_fastrand())>>23;
x->x_scratches[i].init = (inline_fastrand() % (height-1))+1;
}
}
}
}
static void pdp_aging_dusts(t_pdp_aging *x, short int *dest)
{
int dx[8] = { 1, 1, 0, -1, -1, -1, 0, 1};
int dy[8] = { 0, -1, -1, -1, 0, 1, 1, 1};
int i, j;
int dnum;
int d, len;
int px, py;
const int width = x->x_vwidth;
const int height = x->x_vheight;
if(x->x_dusinterval == 0)
{
if((inline_fastrand()&0xf0000000) == 0) {
x->x_dusinterval = inline_fastrand()>>29;
}
return;
}
dnum = x->x_area_scale*4 + (inline_fastrand()>>27);
for(i=0; i<dnum; i++)
{
px = inline_fastrand()%width;
py = inline_fastrand()%height;
d = inline_fastrand()>>29;
len = inline_fastrand()%x->x_area_scale + 5;
for(j=0; j<len; j++) {
dest[py*width + px] = 0x1010;
py += dy[d];
px += dx[d];
if(px<0 || px>=width) break;
if(py<0 || py>=height) break;
d = (d + inline_fastrand()%3 - 1) & 7;
}
}
x->x_dusinterval--;
}
static void pdp_aging_pits(t_pdp_aging *x, short int *dest)
{
int i, j;
int pnum, size, pnumscale;
int px, py;
const int width = x->x_vwidth;
const int height = x->x_vheight;
pnumscale = x->x_area_scale * 2;
if(x->x_pits_interval)
{
pnum = pnumscale + (inline_fastrand()%pnumscale);
x->x_pits_interval--;
}
else
{
pnum = inline_fastrand()%pnumscale;
if((inline_fastrand()&0xf8000000) == 0)
{
x->x_pits_interval = (inline_fastrand()>>28) + 20;
}
}
for(i=0; i<pnum; i++)
{
px = inline_fastrand()%(width-1);
py = inline_fastrand()%(height-1);
size = inline_fastrand()>>28;
for(j=0; j<size; j++)
{
px = px + inline_fastrand()%3-1;
py = py + inline_fastrand()%3-1;
if(px<0 || px>=width) break;
if(py<0 || py>=height) break;
dest[py*width + px] = 0xc0c0;
}
}
}
static void pdp_aging_process_yv12(t_pdp_aging *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;
unsigned int totalnbpixels;
unsigned int u_offset;
unsigned int v_offset;
unsigned int totnbpixels;
short int *poy, *pou, *pov, *pny, *pnu, *pnv;
int px, py;
int noy, pos, nox;
int *p;
x->x_vwidth = header->info.image.width;
x->x_vheight = header->info.image.height;
x->x_vsize = x->x_vwidth*x->x_vheight;
totalnbpixels = x->x_vsize;
u_offset = x->x_vsize;
v_offset = x->x_vsize + (x->x_vsize>>2);
totnbpixels = x->x_vsize + (x->x_vsize>>1);
newheader->info.image.encoding = header->info.image.encoding;
newheader->info.image.width = x->x_vwidth;
newheader->info.image.height = x->x_vheight;
pdp_aging_coloraging( x, data, newdata );
pdp_aging_scratching( x, newdata );
pdp_aging_pits( x, newdata );
if ( x->x_area_scale > 1 ) pdp_aging_dusts( x, newdata );
return;
}
static void pdp_aging_sendpacket(t_pdp_aging *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_outlet0, &x->x_packet1);
}
static void pdp_aging_process(t_pdp_aging *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_aging_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_aging_process_yv12, pdp_aging_sendpacket, &x->x_queue_id);
break;
case PDP_IMAGE_GREY:
// pdp_aging_process_packet(x);
break;
default:
/* don't know the type, so dont pdp_aging_process */
break;
}
}
}
static void pdp_aging_input_0(t_pdp_aging *x, t_symbol *s, t_floatarg f)
{
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_aging_process(x);
}
}
static void pdp_aging_free(t_pdp_aging *x)
{
int i;
pdp_queue_finish(x->x_queue_id);
pdp_packet_mark_unused(x->x_packet0);
}
t_class *pdp_aging_class;
void *pdp_aging_new(void)
{
int i;
t_pdp_aging *x = (t_pdp_aging *)pd_new(pdp_aging_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("area_scale"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("scratches"));
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_nb_scratches = 7;
x->x_area_scale=5;
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_aging_setup(void)
{
// post( pdp_aging_version );
pdp_aging_class = class_new(gensym("pdp_aging"), (t_newmethod)pdp_aging_new,
(t_method)pdp_aging_free, sizeof(t_pdp_aging), 0, A_NULL);
class_addmethod(pdp_aging_class, (t_method)pdp_aging_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
class_addmethod(pdp_aging_class, (t_method)pdp_aging_area_scale, gensym("area_scale"), A_FLOAT, A_NULL);
class_addmethod(pdp_aging_class, (t_method)pdp_aging_scratches, gensym("scratches"), A_FLOAT, A_NULL);
class_sethelpsymbol( pdp_aging_class, gensym("pdp_aging.pd") );
}
#ifdef __cplusplus
}
#endif
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