2 * filter_sepia.c -- sepia filter
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <framework/mlt_filter.h>
22 #include <framework/mlt_frame.h>
31 static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
34 mlt_filter filter = mlt_frame_pop_service( this );
37 *format = mlt_image_yuv422;
38 int error = mlt_frame_get_image( this, image, format, width, height, 1 );
40 // Only process if we have no error and a valid colour space
41 if ( error == 0 && *image )
43 // We modify the whole image
46 int uneven = *width % 2;
47 int w = ( *width - uneven ) / 2;
51 int u = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "u" );
52 int v = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "v" );
76 /** Filter processing.
79 static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
81 // Push the frame filter
82 mlt_frame_push_service( frame, this );
83 mlt_frame_push_get_image( frame, filter_get_image );
87 /** Constructor for the filter.
90 mlt_filter filter_sepia_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
92 mlt_filter this = mlt_filter_new( );
95 this->process = filter_process;
96 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "u", "75" );
97 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "v", "150" );