2 * filter_movit_opacity.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/mix_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 bool ok = effect->set_float( "strength_first", mlt_properties_get_double( properties, "opacity" ) );
37 GlslManager::get_instance()->unlock_service( frame );
38 *format = mlt_image_glsl;
39 return mlt_frame_get_image( frame, image, format, width, height, writable );
42 static mlt_frame process( mlt_filter filter, mlt_frame frame )
44 if ( !mlt_frame_is_test_card( frame ) ) {
45 Effect* effect = GlslManager::get_effect( filter, frame );
47 effect = GlslManager::add_effect( filter, frame, new MixEffect, 0 );
49 bool ok = effect->set_float( "strength_first", 1.0f );
50 ok |= effect->set_float( "strength_second", 0.0f );
54 mlt_frame_push_service( frame, filter );
55 mlt_frame_push_get_image( frame, get_image );
60 mlt_filter filter_movit_opacity_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
62 mlt_filter filter = NULL;
63 GlslManager* glsl = GlslManager::get_instance();
65 if ( glsl && ( filter = mlt_filter_new() ) ) {
66 mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
67 mlt_properties_set( properties, "opacity", arg? arg : "1" );
68 filter->process = process;