mirror of
https://github.com/game-stop/veejay.git
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85 lines
2.8 KiB
C
85 lines
2.8 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 "common.h"
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#include <veejaycore/vjmem.h>
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#include "pixelate.h"
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vj_effect *pixelate_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 = 1;
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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] = 1;
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ve->limits[1][0] = (width < height ? width: height);
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ve->defaults[0] = 8;
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ve->description = "Pixelate";
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ve->sub_format = -1;
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ve->extra_frame = 0;
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ve->has_user =0;
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ve->parallel = 1;
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ve->param_description = vje_build_param_list( ve->num_params, "Pixel Size");
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return ve;
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}
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void pixelate_apply( void *ptr, VJFrame *frame, int *args )
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{
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int pixelSize = args[0];
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int width = frame->width;
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int height = frame->height;
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for (int i = 0; i < height; i += pixelSize) {
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for (int j = 0; j < width; j += pixelSize) {
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int totalY = 0;
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int totalU = 0;
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int totalV = 0;
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int count = 0;
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for (int y = i; y < i + pixelSize && y < height; ++y) {
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for (int x = j; x < j + pixelSize && x < width; ++x) {
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int index = y * width + x;
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totalY += frame->data[0][index];
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totalU += frame->data[1][index];
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totalV += frame->data[2][index];
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count++;
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}
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}
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int averageY = totalY / count;
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int averageU = totalU / count;
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int averageV = totalV / count;
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for (int y = i; y < i + pixelSize && y < height; ++y) {
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for (int x = j; x < j + pixelSize && x < width; ++x) {
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int index = y * width + x;
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frame->data[0][index] = (uint8_t)averageY;
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frame->data[1][index] = (uint8_t)averageU;
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frame->data[2][index] = (uint8_t)averageV;
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}
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}
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}
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}
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}
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