mirror of
https://github.com/game-stop/veejay.git
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83 lines
2.1 KiB
C
83 lines
2.1 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 <config.h>
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#include "pixelate.h"
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#include <stdlib.h>
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static uint8_t values[512];
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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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int i;
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int nvalues=0;
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for(i=1; i < width; i++)
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{
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if( (width%i)== 0)
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{
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values[nvalues] = i;
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nvalues++;
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}
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}
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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] = nvalues-2;
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ve->defaults[0] = 8;
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ve->description = "Pixelate";
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ve->sub_format = 0;
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ve->extra_frame = 0;
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ve->has_user =0;
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return ve;
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}
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void pixelate_apply( VJFrame *frame, int w, int h , int vv )
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{
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unsigned int i,j ;
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unsigned int len = frame->len;
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const unsigned int v = values[vv];
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const unsigned int uv_len = frame->uv_len;
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const unsigned int u_v = v >> frame->shift_h;
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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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for (i = 0; i < len; i+=v) {
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for(j=0; j < v; j++)
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{
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Y[i+j] = Y[i];
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}
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}
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for (i = 0; i < uv_len; i+=u_v) {
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for(j=0; j < u_v; j++)
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{
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Cb[i+j] = Cb[i];
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Cr[i+j] = Cr[i];
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}
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}
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}
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