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https://github.com/game-stop/veejay.git
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109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
/*
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* Linux VeeJay
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*
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* Copyright(C)2002 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 <stdint.h>
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#include <stdio.h>
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#include <libvjmem/vjmem.h>
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#include <config.h>
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#include "opacitythreshold.h"
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vj_effect *opacitythreshold_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 = 3;
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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;
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ve->limits[1][0] = 255;
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ve->limits[0][1] = 0;
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ve->limits[1][1] = 255;
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ve->limits[0][2] = 0;
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ve->limits[1][2] = 255;
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ve->defaults[0] = 180;
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ve->defaults[1] = 50;
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ve->defaults[2] = 255;
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ve->description = "Threshold blur with overlay";
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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, "Opacity", "Min Threshold", "Max Threshold");
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return ve;
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}
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void opacitythreshold_apply( VJFrame *frame, VJFrame *frame2,
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int width, int height, int opacity,
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int threshold, int t2)
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{
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unsigned int x, y, len = width * height-width;
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uint8_t a1, a2;
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unsigned int op0, op1;
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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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op1 = (opacity > 255) ? 255 : opacity;
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op0 = 255 - op1;
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for (y = width; y < len; y += width) {
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for (x = 1; x < width-1; x++) {
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a1 = Y[x + y];
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a2 = Y2[x + y];
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if (a1 < threshold || a1 > t2) {
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a1 = (Y[y - width + x - 1] +
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Y[y - width + x + 1] +
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Y[y - width + x] +
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Y[y + x] +
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Y[y + x - 1] +
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Y[y + x + 1] +
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Y[y + width + x] +
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Y[y + width + x + 1] +
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Y[y + width + x - 1]
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) / 9;
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a2 = (Y2[y - width + x - 1] +
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Y2[y - width + x + 1] +
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Y2[y - width + x] +
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Y2[y + x] +
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Y2[y + x - 1] +
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Y2[y + x + 1] +
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Y2[y + width + x] +
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Y2[y + width + x + 1] +
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Y2[y + width + x - 1]
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) / 9;
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Y[x + y] = (op0 * a1 + op1 * a2) >> 8;
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Cb[x + y] =
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(op0 * Cb[x + y] +
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op1 * Cb2[x + y]) >> 8;
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Cr[x + y] =
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(op0 * Cr[x + y] +
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op1 * Cr2[x + y]) >> 8;
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}
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}
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}
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}
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void opacitythreshold_free(){}
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