mirror of
https://github.com/game-stop/veejay.git
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149 lines
3.5 KiB
C
149 lines
3.5 KiB
C
/*
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* Linux VeeJay
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*
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* Copyright(C)2006 Niels Elburg <nwelburg@gmail.com>
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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 <config.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <libvjmem/vjmem.h>
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#include "threshold.h"
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#include "common.h"
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#include "softblur.h"
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typedef int (*morph_func)(uint8_t *kernel, uint8_t mt[9] );
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vj_effect *threshold_init(int w, int h)
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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 = 2;
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ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
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ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* min */
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ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* max */
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ve->limits[0][0] = 0; // threshold
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ve->limits[1][0] = 255;
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ve->limits[0][1] = 0; // reverse
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ve->limits[1][1] = 1;
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ve->defaults[0] = 40;
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ve->defaults[1] = 0;
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ve->description = "Map B from threshold mask";
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ve->sub_format = 1;
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ve->extra_frame = 1;
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ve->has_user = 0;
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ve->param_description = vje_build_param_list( ve->num_params, "Threshold", "Reverse" );
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return ve;
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}
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static uint8_t *binary_img;
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int threshold_malloc(int w, int h )
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{
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binary_img = (uint8_t*) vj_malloc(sizeof(uint8_t) * RUP8(w * h) );
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if(!binary_img) return 0;
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return 1;
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}
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void threshold_free(void)
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{
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if(binary_img)
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free(binary_img);
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binary_img = NULL;
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}
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#ifndef MIN
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#define MIN(a,b) ( (a)>(b) ? (b) : (a) )
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#endif
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#ifndef MAX
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#define MAX(a,b) ( (a)>(b) ? (a) : (b) )
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#endif
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static int _dilate_kernel3x3( uint8_t *kernel, uint8_t img[9])
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{
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register int x;
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/* consider all background pixels (0) in input image */
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for(x = 0; x < 9; x ++ )
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if((kernel[x] * img[x]) > 0 )
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return 1;
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return 0;
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}
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void threshold_apply( VJFrame *frame, VJFrame *frame2,int width, int height, int threshold, int reverse )
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{
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unsigned int y,x;
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uint8_t *Y = frame->data[0];
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uint8_t *Cb = frame->data[1];
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uint8_t *Cr = frame->data[2];
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uint8_t *Y2 = frame2->data[0];
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uint8_t *Cb2=frame2->data[1];
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uint8_t *Cr2=frame2->data[2];
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uint8_t *bmap = binary_img;
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int len = frame->len;
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softblur_apply( frame, width,height,0 );
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binarify_1src( binary_img,Y,threshold,0, width,height);
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// len -= width;
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if(!reverse)
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{
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for(y = 0; y < len; y += width )
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{
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for(x = 0; x < width; x ++)
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{
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if(binary_img[x+y]) //@ found white pixel
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{
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Y[x+y] = Y2[x+y];
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Cb[x+y] = Cb2[x+y];
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Cr[x+y] = Cr2[x+y];
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}
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else //@ black
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{
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Y[x + y] = 0;
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Cb[x + y] = 128;
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Cr[x + y] = 128;
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}
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}
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}
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}
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else
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{
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for(y = 0; y < len; y += width )
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{
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for(x = 0; x < width; x ++)
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{
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if(binary_img[x+y] == 0x0) //@ found black pixel
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{
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Y[x+y] = Y2[x+y];
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Cb[x+y]= Cb2[x+y];
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Cr[x+y]= Cr2[x+y];
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}
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else
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{
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Y[x+y] = 0x0;
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Cb[x+y] = 128;
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Cr[x+y] = 128;
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}
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}
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}
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}
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}
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