2 * filter_resize.c -- resizing filter
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include "filter_resize.h"
23 #include <framework/mlt_frame.h>
32 static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
35 int oheight = *height;
36 mlt_frame_get_image( this, image, format, &owidth, &oheight, 0 );
41 if ( !strcmp( mlt_properties_get( mlt_frame_properties( this ), "resize.scale" ), "affine" ) )
42 *image = mlt_frame_rescale_yuv422( this, *width, *height );
44 *image = mlt_frame_resize_yuv422( this, *width, *height );
48 /** Filter processing.
51 static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
53 mlt_frame_push_get_image( frame, filter_get_image );
54 mlt_properties_set( mlt_frame_properties( frame ), "resize.scale", mlt_properties_get( mlt_filter_properties( this ), "scale" ) );
58 /** Constructor for the filter.
61 mlt_filter filter_resize_init( char *arg )
63 mlt_filter this = calloc( sizeof( struct mlt_filter_s ), 1 );
64 if ( mlt_filter_init( this, this ) == 0 )
66 this->process = filter_process;
68 mlt_properties_set( mlt_filter_properties( this ), "scale", arg );
70 mlt_properties_set( mlt_filter_properties( this ), "scale", "off" );