2 * filter_dust.c -- dust filter
3 * Copyright (c) 2007 Marco Gittler <g.marco@freenet.de>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include "filter_dust.h"
22 #include <framework/mlt_frame.h>
29 static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
32 mlt_filter filter = mlt_frame_pop_service( this );
33 int error = mlt_frame_get_image( this, image, format, width, height, 1 );
35 if ( error == 0 && *image && *format == mlt_image_yuv422 )
41 int maxdia = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "maxdiameter" );
42 int maxcount = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "maxcount" );
43 int im=rand()%maxcount;
54 if (x1+x<w && x1+x>0 && y1+y<h && y1+y>0 && x!=0 && y!=0){
55 //uint8_t *pix=*image+(y+y1)*w*2+(x+x1)*2;
56 //v=255*(abs(x)+abs(y))/dx;
59 //v=((51*sqrt(y*y+x*x))/255);
60 *(*image+(y+y1)*w*2+(x+x1)*2)=*(*image+(y+y1)*w*2+(x+x1)*2)/((51*sqrt(y*y+x*x))/255);
67 //v=((51*sqrt(y*y+x*x))/255);
69 *(*image+(y+y1)*w*2+(x+x1)*2)=*(*image+(y+y1)*w*2+(x+x1)*2)*((51*sqrt(y*y+x*x))/255);
84 static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
87 mlt_frame_push_service( frame, this );
88 mlt_frame_push_get_image( frame, filter_get_image );
93 mlt_filter filter_dust_init( char *arg )
95 mlt_filter this = mlt_filter_new( );
98 this->process = filter_process;
99 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "maxdiameter", "10" );
100 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "maxcount", "10" );