mirror of
https://github.com/game-stop/veejay.git
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112 lines
2.6 KiB
C
112 lines
2.6 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 "softblur.h"
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#include <stdlib.h>
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vj_effect *softblur_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 = 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->defaults[0] = 0;
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ve->limits[0][0] = 0;
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ve->limits[1][0] = 1; /* 3*/
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ve->description = "Soft Blur (1x3) and (3x3)";
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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 softblur1_apply( VJFrame *frame, int width, int height)
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{
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int r, c;
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int len = (width * height);
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uint8_t *Y = frame->data[0];
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for (r = 0; r < len; r += width) {
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for (c = 1; c < width-1; c++) {
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Y[c + r] = (Y[r + c - 1] +
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Y[r + c] +
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Y[r + c + 1]
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) / 3;
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}
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}
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}
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void softblur3_apply(VJFrame *frame, int width, int height ) {
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int r,c;
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uint8_t *Y = frame->data[0];
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const int len = frame->len;
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for(c = 1; c < width - 1; c ++ )
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Y[c ] = (Y[c - 1] +
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Y[c ] +
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Y[c + 1]
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) / 3;
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for(r=width; r < (len-width); r+=width) {
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for(c=1; c < (width-1); c++) {
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Y[r+c] = ( Y[r - width + c - 1] +
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Y[r - width + c ] +
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Y[r + c + 1] +
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Y[r - width + c] +
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Y[r + c] +
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Y[r + c + 1] +
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Y[r + width + c - 1] +
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Y[r + width + c] +
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Y[r + width + c + 1] ) / 9;
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}
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}
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for( c = (len-width) ; c < len; c ++ )
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Y[c ] = (Y[c - 1] +
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Y[c] +
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Y[c + 1]
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) / 3;
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}
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void softblur_apply(VJFrame *frame, int width, int height, int type)
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{
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switch (type) {
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case 0:
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softblur1_apply(frame, width, height);
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break;
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break;
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case 1:
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softblur3_apply(frame, width, height);
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break;
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}
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}
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