2 * filter_oldfilm.c -- oldfilm 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 <framework/mlt_filter.h>
21 #include <framework/mlt_frame.h>
28 static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
31 mlt_filter filter = mlt_frame_pop_service( this );
32 int error = mlt_frame_get_image( this, image, format, width, height, 1 );
34 if ( error == 0 && *image && *format == mlt_image_yuv422 )
42 int delta = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "delta" );
43 int every = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "every" );
44 int diffpic=rand()%delta*2-delta;
59 uint8_t* pic=(*image+y*w*2+x*2);
60 if (y+diffpic>0 && y+diffpic<h){
61 *pic=*(pic+diffpic*w*2);
62 *(pic+1)=*(pic+diffpic*w*2+1);
75 static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
78 mlt_frame_push_service( frame, this );
79 mlt_frame_push_get_image( frame, filter_get_image );
83 mlt_filter filter_oldfilm_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
85 mlt_filter this = mlt_filter_new( );
88 this->process = filter_process;
89 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "delta", "20" );
90 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "every", "80" );