Fix movit.convert.fence frame property when using tractor.

[mlt] / src / framework / mlt_repository.h

diff --git a/src/framework/mlt_repository.h b/src/framework/mlt_repository.h
index 651703029a2a5dd427ca1f30d17f90cc81ed73c4..29fb33735636204c8ff7316d36203d0134544aff 100644 (file)
--- a/src/framework/mlt_repository.h
+++ b/src/framework/mlt_repository.h
@@ -1,7 +1,11 @@
-/*
- * repository.h -- provides a map between service and shared objects
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_repository.h
+ * \brief provides a map between service and shared objects
+ * \see mlt_repository_s
+ *
+ * Copyright (C) 2003-2009 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
+ * \author Dan Dennedy <dan@dennedy.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -24,31 +28,45 @@
 #include "mlt_types.h"
 #include "mlt_profile.h"
 
-/** Repository structure forward reference.
-*/
+/** This callback is the main entry point into a module, which must be exported
+ *  with the symbol "mlt_register".
+ *
+ *  Inside the callback, the module registers the additional callbacks below.
+ */
+
+typedef void ( *mlt_repository_callback )( mlt_repository );
+
+/** The callback function that modules implement to construct a service.
+ */
+
+typedef void *( *mlt_register_callback )( mlt_profile, mlt_service_type, const char * /* service name */, const void * /* arg */ );
 
-typedef struct mlt_repository_s *mlt_repository;
+/** The callback function that modules implement to supply metadata as a properties list.
+ */
 
-/** This macro can be used to register services if the function is declared as 
-*   void mlt_register( mlt_repository )
-*/
+typedef mlt_properties ( *mlt_metadata_callback )( mlt_service_type, const char * /* service name */, void * /* callback_data */ );
+
+/** A convenience macro to create an entry point for service registration. */
 #define MLT_REPOSITORY void mlt_register( mlt_repository repository )
-#define MLT_REGISTER( type, service, symbol  ) ( mlt_repository_register( repository, (type), (service), (symbol) ) )
-#define MLT_REGISTER_METADATA( type, service, properties  ) ( mlt_repository_register_metadata( repository, (type), (service), (properties) ) )
 
-/** Public functions.
-*/
+/** A convenience macro to a register service in a more declarative manner. */
+#define MLT_REGISTER( type, service, symbol  ) ( mlt_repository_register( repository, (type), (service), ( mlt_register_callback )(symbol) ) )
+
+/** A convenience macro to a register metadata in a more declarative manner. */
+#define MLT_REGISTER_METADATA( type, service, callback, data ) ( mlt_repository_register_metadata( repository, (type), (service), ( mlt_metadata_callback )(callback), (data) ) )
 
 extern mlt_repository mlt_repository_init( const char *directory );
-extern void mlt_repository_register( mlt_repository self, mlt_service_type service_type, const char *service, void *symbol );
-extern void *mlt_repository_create( mlt_repository self, mlt_profile profile, mlt_service_type type, const char *service, void *arg ); 
+extern void mlt_repository_register( mlt_repository self, mlt_service_type service_type, const char *service, mlt_register_callback );
+extern void *mlt_repository_create( mlt_repository self, mlt_profile profile, mlt_service_type type, const char *service, const void *arg );
 extern void mlt_repository_close( mlt_repository self );
 extern mlt_properties mlt_repository_consumers( mlt_repository self );
 extern mlt_properties mlt_repository_filters( mlt_repository self );
 extern mlt_properties mlt_repository_producers( mlt_repository self );
 extern mlt_properties mlt_repository_transitions( mlt_repository self );
-extern void mlt_repository_register_metadata( mlt_repository self, mlt_service_type type, const char *service, mlt_properties metadata );
+extern void mlt_repository_register_metadata( mlt_repository self, mlt_service_type type, const char *service, mlt_metadata_callback, void *callback_data );
 extern mlt_properties mlt_repository_metadata( mlt_repository self, mlt_service_type type, const char *service );
+extern mlt_properties mlt_repository_languages( mlt_repository self );
+extern mlt_properties mlt_repository_presets( );
 
 #endif