mirror of
https://github.com/game-stop/veejay.git
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91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/*
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* Linux VeeJay
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*
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* Copyright(C)2002 Niels Elburg <elburg@hio.hen.nl>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License , or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 , USA.
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*/
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#include <stdlib.h>
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#include <stdint.h>
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#include <libvjmem/vjmem.h>
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#include "diffimg.h"
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#include "common.h"
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vj_effect *diffimg_init(int width, int height)
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{
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vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
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ve->num_params = 3;
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ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params);
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ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params);
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ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params);
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ve->defaults[0] = 6;/* type */
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ve->defaults[1] = 15; /* min */
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ve->defaults[2] = 240; /* max */
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ve->limits[0][0] = 0;
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ve->limits[1][0] = 7;
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/* 0,179,0253,0127 */
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ve->limits[0][1] = 1;
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ve->limits[1][1] = 255;
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ve->limits[1][2] = 255;
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ve->limits[0][2] = 1;
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ve->param_description = vje_build_param_list( ve->num_params,"Mode", "Min threshold", "Max threshold" );
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ve->description = "Enhanced Magic Blend";
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ve->extra_frame = 0;
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ve->sub_format = 0;
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ve->has_user = 0;
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return ve;
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}
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void diffimg_apply(
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VJFrame *frame,
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int width,
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int height,
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int type,
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int threshold_min,
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int threshold_max
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)
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{
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unsigned int i;
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const int len = frame->len - width - 2;
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int d,m;
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uint8_t y,yb;
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uint8_t *Y = frame->data[0];
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_pf _pff = _get_pf(type);
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for(i=0; i < len; i++)
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{
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y = Y[i];
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if( y < 16 ) y = 16; else if (y > pixel_Y_hi_) y = pixel_Y_hi_;
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yb = y;
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if(y >= threshold_min && y <= threshold_max)
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{
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m = (Y[i+1] + Y[i+width] + Y[i+width+1]+2) >> 2;
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d = Y[i] - m;
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d *= 500;
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d /= 100;
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m = m + d;
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y = ((((y << 1) - (255 - m))>>1) + Y[i])>>1;
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if(y < 16) y = 16; else if (y>pixel_Y_hi_) y = pixel_Y_hi_;
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Y[i] = _pff(y,yb);
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}
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}
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}
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void diffimg_free(){}
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