2 * \file mlt_repository.h
3 * \brief provides a map between service and shared objects
5 * Copyright (C) 2003-2008 Ushodaya Enterprises Limited
6 * \author Charles Yates <charles.yates@pandora.be>
7 * Dan Dennedy <dan@dennedy.org>
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #ifndef _MLT_REPOSITORY_H_
25 #define _MLT_REPOSITORY_H_
27 #include "mlt_types.h"
28 #include "mlt_profile.h"
30 /** Repository structure forward reference.
33 typedef struct mlt_repository_s
*mlt_repository
;
35 /** This callback is the main entry point into a module, which must be exported
36 with the symbol "mlt_register".
37 Inside the callback, the module registers the additional callbacks below.
40 typedef void ( *mlt_repository_callback
)( mlt_repository
);
42 /** These are callback functions that modules implement to construct services
45 typedef void *( *mlt_register_callback
)( mlt_profile
, mlt_service_type
, const char * /* service name */, void * /* arg */ );
46 typedef mlt_properties ( *mlt_metadata_callback
)( mlt_service_type
, const char * /* service name */, void * /* callback_data */ );
48 /** These convenience macros can be used to register services in a more declarative manner.
50 #define MLT_REPOSITORY void mlt_register( mlt_repository repository )
51 #define MLT_REGISTER( type, service, symbol ) ( mlt_repository_register( repository, (type), (service), ( mlt_register_callback )(symbol) ) )
52 #define MLT_REGISTER_METADATA( type, service, callback, data ) ( mlt_repository_register_metadata( repository, (type), (service), ( mlt_metadata_callback )(callback), (data) ) )
57 extern mlt_repository
mlt_repository_init( const char *directory
);
58 extern void mlt_repository_register( mlt_repository self
, mlt_service_type service_type
, const char *service
, mlt_register_callback
);
59 extern void *mlt_repository_create( mlt_repository self
, mlt_profile profile
, mlt_service_type type
, const char *service
, void *arg
);
60 extern void mlt_repository_close( mlt_repository self
);
61 extern mlt_properties
mlt_repository_consumers( mlt_repository self
);
62 extern mlt_properties
mlt_repository_filters( mlt_repository self
);
63 extern mlt_properties
mlt_repository_producers( mlt_repository self
);
64 extern mlt_properties
mlt_repository_transitions( mlt_repository self
);
65 extern void mlt_repository_register_metadata( mlt_repository self
, mlt_service_type type
, const char *service
, mlt_metadata_callback
, void *callback_data
);
66 extern mlt_properties
mlt_repository_metadata( mlt_repository self
, mlt_service_type type
, const char *service
);
67 extern mlt_properties
mlt_repository_languages( mlt_repository self
);