2 * mlt_factory.c -- the factory method interfaces
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
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.
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.
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.
23 #include "mlt_repository.h"
29 /** Singleton repositories
32 static char *mlt_prefix
= NULL
;
33 static mlt_properties object_list
= NULL
;
34 static mlt_repository producers
= NULL
;
35 static mlt_repository filters
= NULL
;
36 static mlt_repository transitions
= NULL
;
37 static mlt_repository consumers
= NULL
;
38 static int unique_id
= 0;
40 /** Construct the factories.
43 int mlt_factory_init( char *prefix
)
45 // Only initialise once
46 if ( mlt_prefix
== NULL
)
48 // If no directory is specified, default to install directory
52 // Store the prefix for later retrieval
53 mlt_prefix
= strdup( prefix
);
55 // Initialise the pool
58 // Create the object list.
59 object_list
= mlt_properties_new( );
61 // Create a repository for each service type
62 producers
= mlt_repository_init( object_list
, prefix
, "producers.dat", "mlt_create_producer" );
63 filters
= mlt_repository_init( object_list
, prefix
, "filters.dat", "mlt_create_filter" );
64 transitions
= mlt_repository_init( object_list
, prefix
, "transitions.dat", "mlt_create_transition" );
65 consumers
= mlt_repository_init( object_list
, prefix
, "consumers.dat", "mlt_create_consumer" );
71 /** Fetch the prefix used in this instance.
74 const char *mlt_factory_prefix( )
79 /** Fetch a producer from the repository.
82 mlt_producer
mlt_factory_producer( char *service
, void *input
)
84 mlt_producer obj
= mlt_repository_fetch( producers
, service
, input
);
87 mlt_properties properties
= mlt_producer_properties( obj
);
88 mlt_properties_set_int( properties
, "_unique_id", ++ unique_id
);
89 mlt_properties_set( properties
, "mlt_type", "producer" );
90 if ( mlt_properties_get_int( properties
, "_mlt_service_hidden" ) == 0 )
91 mlt_properties_set( properties
, "mlt_service", service
);
96 /** Fetch a filter from the repository.
99 mlt_filter
mlt_factory_filter( char *service
, void *input
)
101 mlt_filter obj
= mlt_repository_fetch( filters
, service
, input
);
104 mlt_properties properties
= mlt_filter_properties( obj
);
105 mlt_properties_set_int( properties
, "_unique_id", ++ unique_id
);
106 mlt_properties_set( properties
, "mlt_type", "filter" );
107 mlt_properties_set( properties
, "mlt_service", service
);
112 /** Fetch a transition from the repository.
115 mlt_transition
mlt_factory_transition( char *service
, void *input
)
117 mlt_transition obj
= mlt_repository_fetch( transitions
, service
, input
);
120 mlt_properties properties
= mlt_transition_properties( obj
);
121 mlt_properties_set_int( properties
, "_unique_id", ++ unique_id
);
122 mlt_properties_set( properties
, "mlt_type", "transition" );
123 mlt_properties_set( properties
, "mlt_service", service
);
128 /** Fetch a consumer from the repository
131 mlt_consumer
mlt_factory_consumer( char *service
, void *input
)
133 mlt_consumer obj
= mlt_repository_fetch( consumers
, service
, input
);
136 mlt_properties properties
= mlt_consumer_properties( obj
);
137 mlt_properties_set_int( properties
, "_unique_id", ++ unique_id
);
138 mlt_properties_set( properties
, "mlt_type", "consumer" );
139 mlt_properties_set( properties
, "mlt_service", service
);
144 /** Close the factory.
147 void mlt_factory_close( )
149 if ( mlt_prefix
!= NULL
)
151 mlt_repository_close( producers
);
152 mlt_repository_close( filters
);
153 mlt_repository_close( transitions
);
154 mlt_repository_close( consumers
);
155 mlt_properties_close( object_list
);