* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
* Author: Charles Yates <charles.yates@pandora.be>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
+ * This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "mlt.h"
#include "mlt_repository.h"
+#include <stdio.h>
#include <stdlib.h>
#include <string.h>
*/
static char *mlt_prefix = NULL;
+static mlt_properties global_properties = NULL;
static mlt_properties object_list = NULL;
static mlt_repository producers = NULL;
static mlt_repository filters = NULL;
static mlt_repository transitions = NULL;
static mlt_repository consumers = NULL;
+static mlt_properties event_object = NULL;
+static int unique_id = 0;
+
+/** Event transmitters.
+*/
+
+static void mlt_factory_create_request( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
+{
+ if ( listener != NULL )
+ listener( owner, this, ( char * )args[ 0 ], ( char * )args[ 1 ], ( mlt_service * )args[ 2 ] );
+}
+
+static void mlt_factory_create_done( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
+{
+ if ( listener != NULL )
+ listener( owner, this, ( char * )args[ 0 ], ( char * )args[ 1 ], ( mlt_service )args[ 2 ] );
+}
/** Construct the factories.
*/
-int mlt_factory_init( char *prefix )
+int mlt_factory_init( const char *prefix )
{
// Only initialise once
if ( mlt_prefix == NULL )
{
+ // Allow user over rides
+ if ( prefix == NULL || !strcmp( prefix, "" ) )
+ prefix = getenv( "MLT_REPOSITORY" );
+
// If no directory is specified, default to install directory
if ( prefix == NULL )
prefix = PREFIX_DATA;
// Store the prefix for later retrieval
mlt_prefix = strdup( prefix );
+ // Initialise the pool
+ mlt_pool_init( );
+
+ // Create and set up the events object
+ event_object = mlt_properties_new( );
+ mlt_events_init( event_object );
+ mlt_events_register( event_object, "producer-create-request", ( mlt_transmitter )mlt_factory_create_request );
+ mlt_events_register( event_object, "producer-create-done", ( mlt_transmitter )mlt_factory_create_done );
+ mlt_events_register( event_object, "filter-create-request", ( mlt_transmitter )mlt_factory_create_request );
+ mlt_events_register( event_object, "filter-create-done", ( mlt_transmitter )mlt_factory_create_done );
+ mlt_events_register( event_object, "transition-create-request", ( mlt_transmitter )mlt_factory_create_request );
+ mlt_events_register( event_object, "transition-create-done", ( mlt_transmitter )mlt_factory_create_done );
+ mlt_events_register( event_object, "consumer-create-request", ( mlt_transmitter )mlt_factory_create_request );
+ mlt_events_register( event_object, "consumer-create-done", ( mlt_transmitter )mlt_factory_create_done );
+
+ // Create the global properties
+ global_properties = mlt_properties_new( );
+
// Create the object list.
- object_list = calloc( sizeof( struct mlt_properties_s ), 1 );
- mlt_properties_init( object_list, NULL );
+ object_list = mlt_properties_new( );
// Create a repository for each service type
- producers = mlt_repository_init( object_list, prefix, "producers.dat", "mlt_create_producer" );
- filters = mlt_repository_init( object_list, prefix, "filters.dat", "mlt_create_filter" );
- transitions = mlt_repository_init( object_list, prefix, "transitions.dat", "mlt_create_transition" );
- consumers = mlt_repository_init( object_list, prefix, "consumers.dat", "mlt_create_consumer" );
+ producers = mlt_repository_init( object_list, prefix, "producers", "mlt_create_producer" );
+ filters = mlt_repository_init( object_list, prefix, "filters", "mlt_create_filter" );
+ transitions = mlt_repository_init( object_list, prefix, "transitions", "mlt_create_transition" );
+ consumers = mlt_repository_init( object_list, prefix, "consumers", "mlt_create_consumer" );
+
+ // Force a clean up when app closes
+ atexit( mlt_factory_close );
}
+ // Allow property refresh on a subsequent initialisation
+ if ( global_properties != NULL )
+ {
+ mlt_properties_set_or_default( global_properties, "MLT_NORMALISATION", getenv( "MLT_NORMALISATION" ), "PAL" );
+ mlt_properties_set_or_default( global_properties, "MLT_PRODUCER", getenv( "MLT_PRODUCER" ), "fezzik" );
+ mlt_properties_set_or_default( global_properties, "MLT_CONSUMER", getenv( "MLT_CONSUMER" ), "sdl" );
+ mlt_properties_set( global_properties, "MLT_TEST_CARD", getenv( "MLT_TEST_CARD" ) );
+ mlt_properties_set_or_default( global_properties, "MLT_PROFILE", getenv( "MLT_PROFILE" ), "dv_pal" );
+ }
+
+
return 0;
}
+/** Fetch the events object.
+*/
+
+mlt_properties mlt_factory_event_object( )
+{
+ return event_object;
+}
+
/** Fetch the prefix used in this instance.
*/
return mlt_prefix;
}
+/** Get a value from the environment.
+*/
+
+char *mlt_environment( const char *name )
+{
+ if ( global_properties )
+ return mlt_properties_get( global_properties, name );
+ else
+ return NULL;
+}
+
+/** Set a value in the environment.
+*/
+
+int mlt_environment_set( const char *name, const char *value )
+{
+ if ( global_properties )
+ return mlt_properties_set( global_properties, name, value );
+ else
+ return -1;
+}
+
+static void set_common_properties( mlt_properties properties, mlt_profile profile, const char *type, const char *service )
+{
+ mlt_properties_set_int( properties, "_unique_id", ++ unique_id );
+ mlt_properties_set( properties, "mlt_type", type );
+ if ( mlt_properties_get_int( properties, "_mlt_service_hidden" ) == 0 )
+ mlt_properties_set( properties, "mlt_service", service );
+ if ( profile != NULL )
+ mlt_properties_set_data( properties, "_profile", profile, 0, NULL, NULL );
+}
+
/** Fetch a producer from the repository.
*/
-mlt_producer mlt_factory_producer( char *service, void *input )
+mlt_producer mlt_factory_producer( mlt_profile profile, const char *service, void *input )
{
- mlt_producer obj = mlt_repository_fetch( producers, service, input );
- if ( obj != NULL )
+ mlt_producer obj = NULL;
+
+ // Pick up the default normalising producer if necessary
+ if ( service == NULL )
+ service = mlt_environment( "MLT_PRODUCER" );
+
+ // Offer the application the chance to 'create'
+ mlt_events_fire( event_object, "producer-create-request", service, input, &obj, NULL );
+
+ // Try to instantiate via the specified service
+ if ( obj == NULL )
{
- mlt_properties properties = mlt_producer_properties( obj );
- mlt_properties_set( properties, "mlt_type", "producer" );
- mlt_properties_set( properties, "mlt_service", service );
+ obj = mlt_repository_fetch( producers, profile, producer_type, service, input );
+ mlt_events_fire( event_object, "producer-create-done", service, input, obj, NULL );
+ if ( obj != NULL )
+ {
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( obj );
+ set_common_properties( properties, profile, "producer", service );
+ }
}
return obj;
}
/** Fetch a filter from the repository.
*/
-mlt_filter mlt_factory_filter( char *service, void *input )
+mlt_filter mlt_factory_filter( mlt_profile profile, const char *service, void *input )
{
- mlt_filter obj = mlt_repository_fetch( filters, service, input );
+ mlt_filter obj = NULL;
+
+ // Offer the application the chance to 'create'
+ mlt_events_fire( event_object, "filter-create-request", service, input, &obj, NULL );
+
+ if ( obj == NULL )
+ {
+ obj = mlt_repository_fetch( filters, profile, filter_type, service, input );
+ mlt_events_fire( event_object, "filter-create-done", service, input, obj, NULL );
+ }
+
if ( obj != NULL )
{
- mlt_properties properties = mlt_filter_properties( obj );
- mlt_properties_set( properties, "mlt_type", "filter" );
- mlt_properties_set( properties, "mlt_service", service );
+ mlt_properties properties = MLT_FILTER_PROPERTIES( obj );
+ set_common_properties( properties, profile, "filter", service );
}
return obj;
}
/** Fetch a transition from the repository.
*/
-mlt_transition mlt_factory_transition( char *service, void *input )
+mlt_transition mlt_factory_transition( mlt_profile profile, const char *service, void *input )
{
- mlt_transition obj = mlt_repository_fetch( transitions, service, input );
+ mlt_transition obj = NULL;
+
+ // Offer the application the chance to 'create'
+ mlt_events_fire( event_object, "transition-create-request", service, input, &obj, NULL );
+
+ if ( obj == NULL )
+ {
+ obj = mlt_repository_fetch( transitions, profile, filter_type, service, input );
+ mlt_events_fire( event_object, "transition-create-done", service, input, obj, NULL );
+ }
+
if ( obj != NULL )
{
- mlt_properties properties = mlt_transition_properties( obj );
- mlt_properties_set( properties, "mlt_type", "transition" );
- mlt_properties_set( properties, "mlt_service", service );
+ mlt_properties properties = MLT_TRANSITION_PROPERTIES( obj );
+ set_common_properties( properties, profile, "transition", service );
}
return obj;
}
/** Fetch a consumer from the repository
*/
-mlt_consumer mlt_factory_consumer( char *service, void *input )
+mlt_consumer mlt_factory_consumer( mlt_profile profile, const char *service, void *input )
{
- mlt_consumer obj = mlt_repository_fetch( consumers, service, input );
+ mlt_consumer obj = NULL;
+
+ if ( service == NULL )
+ service = mlt_environment( "MLT_CONSUMER" );
+
+ // Offer the application the chance to 'create'
+ mlt_events_fire( event_object, "consumer-create-request", service, input, &obj, NULL );
+
+ if ( obj == NULL )
+ {
+ obj = mlt_repository_fetch( consumers, profile, consumer_type, service, input );
+ mlt_events_fire( event_object, "consumer-create-done", service, input, obj, NULL );
+ }
+
if ( obj != NULL )
{
- mlt_properties properties = mlt_consumer_properties( obj );
- mlt_properties_set( properties, "mlt_type", "consumer" );
- mlt_properties_set( properties, "mlt_service", service );
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( obj );
+ set_common_properties( properties, profile, "consumer", service );
}
return obj;
}
+/** Register an object for clean up.
+*/
+
+void mlt_factory_register_for_clean_up( void *ptr, mlt_destructor destructor )
+{
+ char unique[ 256 ];
+ sprintf( unique, "%08d", mlt_properties_count( global_properties ) );
+ mlt_properties_set_data( global_properties, unique, ptr, 0, destructor, NULL );
+}
+
/** Close the factory.
*/
{
if ( mlt_prefix != NULL )
{
+ mlt_properties_close( event_object );
mlt_repository_close( producers );
mlt_repository_close( filters );
mlt_repository_close( transitions );
mlt_repository_close( consumers );
+ mlt_properties_close( global_properties );
mlt_properties_close( object_list );
free( mlt_prefix );
- free( object_list );
mlt_prefix = NULL;
+ mlt_pool_close( );
}
}
-
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