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/*
* Copyright 1994-2012 Olivier Girondel
*
* This file is part of lebiniou.
*
* lebiniou 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.
*
* lebiniou 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 lebiniou. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* EffecTV - Realtime Digital Video Effector
* Copyright (C) 2001-2006 FUKUCHI Kentaro
*
* PredatorTV - makes incoming objects invisible like the Predator.
* Copyright (C) 2001-2002 FUKUCHI Kentaro
*
*/
#include "context.h"
u_long id = 1325445400;
u_long options = BE_GFX|BEQ_PICTURE|BEQ_BYPASS;
char desc[] = "PredatorTV plugin from the EffecTV project";
u_long mode = OVERLAY;
#define MAGIC_THRESHOLD 40
static Buffer8_t *diff = NULL;
extern int webcams;
void
create(__attribute__ ((unused)) Context_t *ctx)
{
if (!webcams)
options |= BEQ_DISABLED;
else
diff = Buffer8_new();
}
void
delete(__attribute__ ((unused)) Context_t *ctx)
{
Buffer8_delete(diff);
}
void
on_switch_on(Context_t *ctx)
{
ctx->ref_taken[ctx->cam] = 0;
}
#if 0
static unsigned char *
image_diff_filter(unsigned char *diff)
{
#if 0
/* noise filter for subtracted image. */
unsigned char *image_diff_filter(unsigned char *diff)
{
int x, y;
unsigned char *src, *dest;
unsigned int count;
unsigned int sum1, sum2, sum3;
const int width = video_width;
src = diff;
dest = diff2 + width +1;
for(y=1; y<video_height-1; y++) {
sum1 = src[0] + src[width] + src[width*2];
sum2 = src[1] + src[width+1] + src[width*2+1];
src += 2;
for(x=1; x<width-1; x++) {
sum3 = src[0] + src[width] + src[width*2];
count = sum1 + sum2 + sum3;
sum1 = sum2;
sum2 = sum3;
*dest++ = (0xff*3 - count)>>24;
src++;
}
dest += 2;
}
return diff2;
}
#endif
}
#endif
void
run(Context_t *ctx)
{
Buffer8_t *src1;
Buffer8_t *src2;
Pixel_t *d, *src;
Pixel_t *dst;
uint16_t x, y;
if (!webcams)
return;
pthread_mutex_lock(&ctx->cam_mtx[ctx->cam]);
src1 = ctx->cam_save[ctx->cam][0];
src2 = ctx->cam_ref[ctx->cam];
Buffer8_substract_y(src1, src2, MAGIC_THRESHOLD, diff);
d = diff->buffer;
dst = passive_buffer(ctx)->buffer;
dst += WIDTH * sizeof(Pixel_t);
d += WIDTH * sizeof(Pixel_t);
src = ctx->cam_ref[ctx->cam]->buffer + (WIDTH * sizeof(Pixel_t));
for (y = 1; y < MAXY; y++) {
for (x = 0; x < WIDTH; x++) {
if (*d)
*dst = src[4] & 0xfc;
else
*dst = *src;
d++;
src++;
dst++;
}
}
pthread_mutex_unlock(&ctx->cam_mtx[ctx->cam]);
}
#if 0
static int draw(RGB32 *src, RGB32 *dest)
{
int x, y;
unsigned char *diff;
diff = image_bgsubtract_y(src);
diff = image_diff_filter(diff);
dest += video_width;
diff += video_width;
src = bgimage + video_width;
for(y=1; y<video_height-1; y++) {
for(x=0; x<video_width; x++) {
if(*diff){
*dest = src[4] & 0xfcfcfc;
} else {
*dest = *src;
}
diff++;
src++;
dest++;
}
}
return 0;
}
#endif /* 0 */
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