git.sesse.net Git - mlt/blob - src/modules/opengl/filter_lift_gamma_gain.cpp

   1 /*
   2  * filter_lift_gamma_gain.cpp
   3  * Copyright (C) 2013 Dan Dennedy <dan@dennedy.org>
   4  *
   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.
   9  *
  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.
  14  *
  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.
  18  */
  19
  20 #include <framework/mlt.h>
  21 #include <string.h>
  22 #include <assert.h>
  23
  24 #include "glsl_manager.h"
  25 #include <movit/lift_gamma_gain_effect.h>
  26
  27 static mlt_frame process( mlt_filter filter, mlt_frame frame )
  28 {
  29         if ( !mlt_frame_is_test_card( frame ) ) {
  30                 Effect* effect = GlslManager::get_effect( filter, frame );
  31                 if ( !effect )
  32                         effect = GlslManager::add_effect( filter, frame, new LiftGammaGainEffect );
  33                 if ( effect ) {
  34                         mlt_properties filter_props = MLT_FILTER_PROPERTIES( filter );
  35                         RGBTriplet triplet(
  36                                 mlt_properties_get_double( filter_props, "lift_r" ),
  37                                 mlt_properties_get_double( filter_props, "lift_g" ),
  38                                 mlt_properties_get_double( filter_props, "lift_b" )
  39                         );
  40                         bool ok = effect->set_vec3( "lift", (float*) &triplet );
  41                         triplet.r = mlt_properties_get_double( filter_props, "gamma_r" );
  42                         triplet.g = mlt_properties_get_double( filter_props, "gamma_g" );
  43                         triplet.b = mlt_properties_get_double( filter_props, "gamma_b" );
  44                         ok |= effect->set_vec3( "gamma", (float*) &triplet );
  45                         triplet.r = mlt_properties_get_double( filter_props, "gain_r" );
  46                         triplet.g = mlt_properties_get_double( filter_props, "gain_g" );
  47                         triplet.b = mlt_properties_get_double( filter_props, "gain_b" );
  48                         ok |= effect->set_vec3( "gain", (float*) &triplet );
  49                         assert(ok);
  50                 }
  51         }
  52         return frame;
  53 }
  54
  55 extern "C" {
  56
  57 mlt_filter filter_lift_gamma_gain_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
  58 {
  59         mlt_filter filter = NULL;
  60         GlslManager* glsl = GlslManager::get_instance();
  61
  62         if ( glsl && ( filter = mlt_filter_new() ) ) {
  63                 mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
  64                 mlt_properties_set_double( properties, "lift_r", 0.0 );
  65                 mlt_properties_set_double( properties, "lift_g", 0.0 );
  66                 mlt_properties_set_double( properties, "lift_b", 0.0 );
  67                 mlt_properties_set_double( properties, "gamma_r", 1.0 );
  68                 mlt_properties_set_double( properties, "gamma_g", 1.0 );
  69                 mlt_properties_set_double( properties, "gamma_b", 1.0 );
  70                 mlt_properties_set_double( properties, "gain_r", 1.0 );
  71                 mlt_properties_set_double( properties, "gain_g", 1.0 );
  72                 mlt_properties_set_double( properties, "gain_b", 1.0 );
  73                 filter->process = process;
  74         }
  75         return filter;
  76 }
  77
  78 }