git.sesse.net Git - mlt/blob - src/modules/jackrack/factory.c

   1 /*
   2  * factory.c -- the factory method interfaces
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Dan Dennedy <dan@dennedy.org>
   5  *
   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.
  10  *
  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.
  15  *
  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.
  19  */
  20
  21 #include <framework/mlt.h>
  22 #include <ladspa.h>
  23
  24 #include <string.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <limits.h>
  28 #include <float.h>
  29
  30 #include "plugin_mgr.h"
  31
  32 extern mlt_filter filter_jackrack_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg );
  33 extern mlt_filter filter_ladspa_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg );
  34
  35 static mlt_properties metadata( mlt_service_type type, const char *id, void *data )
  36 {
  37         char file[ PATH_MAX ];
  38         snprintf( file, PATH_MAX, "%s/jackrack/filter_%s.yml",
  39                 mlt_environment( "MLT_DATA" ), strncmp( id, "ladspa.", 7 ) ? id : "ladspa" );
  40         mlt_properties result = mlt_properties_parse_yaml( file );
  41
  42         if ( !strncmp( id, "ladspa.", 7 ) )
  43         {
  44                 // Annotate the yaml properties with ladspa control port info.
  45                 plugin_mgr_t *mgr = plugin_mgr_new();
  46                 plugin_desc_t *desc = plugin_mgr_get_any_desc( mgr, strtol( id + 7, NULL, 10 ) );
  47
  48                 if ( desc )
  49                 {
  50                         mlt_properties params = mlt_properties_new();
  51                         mlt_properties p;
  52                         char key[20];
  53                         int i;
  54
  55                         mlt_properties_set( result, "identifier", id );
  56                         mlt_properties_set( result, "title", desc->name );
  57                         mlt_properties_set_data( result, "parameters", params, 0, (mlt_destructor) mlt_properties_close, NULL );
  58                         for ( i = 0; i < desc->control_port_count; i++ )
  59                         {
  60                                 int j = desc->control_port_indicies[i];
  61                                 LADSPA_Data sample_rate = 48000;
  62                                 LADSPA_PortRangeHintDescriptor hint_descriptor = desc->port_range_hints[j].HintDescriptor;
  63
  64                                 p = mlt_properties_new();
  65                                 snprintf( key, sizeof(key), "%d", i );
  66                                 mlt_properties_set_data( params, key, p, 0, (mlt_destructor) mlt_properties_close, NULL );
  67                                 snprintf( key, sizeof(key), "%d", j );
  68                                 mlt_properties_set( p, "identifier", key );
  69                                 mlt_properties_set( p, "title", desc->port_names[ j ] );
  70                                 if ( LADSPA_IS_HINT_INTEGER( hint_descriptor ) )
  71                                 {
  72                                         mlt_properties_set( p, "type", "integer" );
  73                                         mlt_properties_set_int( p, "default", plugin_desc_get_default_control_value( desc, j, sample_rate ) );
  74                                 }
  75                                 else if ( LADSPA_IS_HINT_TOGGLED( hint_descriptor ) )
  76                                 {
  77                                         mlt_properties_set( p, "type", "boolean" );
  78                                         mlt_properties_set_int( p, "default", plugin_desc_get_default_control_value( desc, j, sample_rate ) );
  79                                 }
  80                                 else
  81                                 {
  82                                         mlt_properties_set( p, "type", "float" );
  83                                         mlt_properties_set_double( p, "default", plugin_desc_get_default_control_value( desc, j, sample_rate ) );
  84                                 }
  85                                 /* set upper and lower, possibly adjusted to the sample rate */
  86                                 if ( LADSPA_IS_HINT_BOUNDED_BELOW( hint_descriptor ) )
  87                                 {
  88                                         LADSPA_Data lower = desc->port_range_hints[j].LowerBound;
  89                                         if ( LADSPA_IS_HINT_SAMPLE_RATE( hint_descriptor ) )
  90                                                 lower *= sample_rate;
  91                                         if ( LADSPA_IS_HINT_LOGARITHMIC( hint_descriptor ) )
  92                                         {
  93                                                 if (lower < FLT_EPSILON)
  94                                                         lower = FLT_EPSILON;
  95                                         }
  96                                         mlt_properties_set_double( p, "minimum", lower );
  97                                 }
  98                                 if ( LADSPA_IS_HINT_BOUNDED_ABOVE( hint_descriptor ) )
  99                                 {
 100                                         LADSPA_Data upper = desc->port_range_hints[j].UpperBound;
 101                                         if ( LADSPA_IS_HINT_SAMPLE_RATE( hint_descriptor ) )
 102                                                 upper *= sample_rate;
 103                                         mlt_properties_set_double( p, "maximum", upper );
 104                                 }
 105                                 if ( LADSPA_IS_HINT_LOGARITHMIC( hint_descriptor ) )
 106                                         mlt_properties_set( p, "scale", "log" );
 107                         }
 108                         p = mlt_properties_new();
 109                         snprintf( key, sizeof(key), "%d", i );
 110                         mlt_properties_set_data( params, key, p, 0, (mlt_destructor) mlt_properties_close, NULL );
 111                         mlt_properties_set( p, "identifier", "wetness" );
 112                         mlt_properties_set( p, "title", "Wet/Dry" );
 113                         mlt_properties_set( p, "type", "float" );
 114                         mlt_properties_set_double( p, "default", 1 );
 115                         mlt_properties_set_double( p, "minimum", 0 );
 116                         mlt_properties_set_double( p, "maximum", 1 );
 117                 }
 118                 plugin_mgr_destroy( mgr );
 119         }
 120
 121         return result;
 122 }
 123
 124 MLT_REPOSITORY
 125 {
 126         plugin_mgr_t *mgr = plugin_mgr_new();
 127         GSList *list;
 128
 129         for ( list = mgr->all_plugins; list; list = g_slist_next( list ) )
 130         {
 131                 plugin_desc_t *desc = (plugin_desc_t *) list->data;
 132                 char *s = malloc( strlen( "ladpsa." ) + 21 );
 133
 134                 sprintf( s, "ladspa.%lu", desc->id );
 135                 MLT_REGISTER( filter_type, s, filter_ladspa_init );
 136                 MLT_REGISTER_METADATA( filter_type, s, metadata, NULL );
 137         }
 138         plugin_mgr_destroy( mgr );
 139
 140         MLT_REGISTER( filter_type, "jackrack", filter_jackrack_init );
 141         MLT_REGISTER_METADATA( filter_type, "jackrack", metadata, NULL );
 142         MLT_REGISTER( filter_type, "ladspa", filter_ladspa_init );
 143         MLT_REGISTER_METADATA( filter_type, "ladspa", metadata, NULL );
 144 }