2 * filter_white_balance.cpp
3 * Copyright (C) 2013 Dan Dennedy <dan@dennedy.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program 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
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software Foundation,
17 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 #include <framework/mlt.h>
24 #include "glsl_manager.h"
25 #include <movit/white_balance_effect.h>
27 static int get_image( mlt_frame frame, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
29 mlt_filter filter = (mlt_filter) mlt_frame_pop_service( frame );
30 mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
31 GlslManager::get_instance()->lock_service( frame );
32 Effect* effect = GlslManager::get_effect( filter, frame );
34 mlt_position position = mlt_filter_get_position( filter, frame );
35 mlt_position length = mlt_filter_get_length2( filter, frame );
36 int color_int = mlt_properties_anim_get_int( properties, "neutral_color", position, length );
38 float((color_int >> 24) & 0xff) / 255.0f,
39 float((color_int >> 16) & 0xff) / 255.0f,
40 float((color_int >> 8) & 0xff) / 255.0f
42 bool ok = effect->set_vec3( "neutral_color", (float*) &color );
43 ok |= effect->set_float( "output_color_temperature",
44 mlt_properties_anim_get_double( properties, "color_temperature", position, length ) );
47 GlslManager::get_instance()->unlock_service( frame );
48 *format = mlt_image_glsl;
49 return mlt_frame_get_image( frame, image, format, width, height, writable );
52 static mlt_frame process( mlt_filter filter, mlt_frame frame )
54 if ( !mlt_frame_is_test_card( frame ) ) {
55 if ( !GlslManager::get_effect( filter, frame ) )
56 GlslManager::add_effect( filter, frame, new WhiteBalanceEffect );
58 mlt_frame_push_service( frame, filter );
59 mlt_frame_push_get_image( frame, get_image );
65 mlt_filter filter_white_balance_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
67 mlt_filter filter = NULL;
68 GlslManager* glsl = GlslManager::get_instance();
70 if ( glsl && ( filter = mlt_filter_new() ) ) {
71 mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
72 mlt_properties_set( properties, "neutral_color", arg? arg : "#7f7f7f" );
73 mlt_properties_set_double( properties, "color_temperature", 6500.0 );
74 filter->process = process;