X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_factory.c;h=d551cfac4167a609bd347b0e28cd28f65df65555;hb=bf3264b9e340ba5c11cbf59835a8af3db94e0cc2;hp=f183baabf2419ffa36a4244d75c6dfb7382a359a;hpb=95f429b56026f5897ebad9060608b6631dcf7515;p=melted diff --git a/src/framework/mlt_factory.c b/src/framework/mlt_factory.c index f183baa..d551cfa 100644 --- a/src/framework/mlt_factory.c +++ b/src/framework/mlt_factory.c @@ -3,19 +3,19 @@ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited * Author: Charles Yates * - * 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" @@ -36,12 +36,28 @@ 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 ) @@ -60,12 +76,20 @@ int mlt_factory_init( char *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( ); - 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" ) ); // Create the object list. object_list = mlt_properties_new( ); @@ -80,9 +104,26 @@ int mlt_factory_init( char *prefix ) 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" ) ); + } + return 0; } +/** Fetch the events object. +*/ + +mlt_properties mlt_factory_event_object( ) +{ + return event_object; +} + /** Fetch the prefix used in this instance. */ @@ -94,7 +135,7 @@ const char *mlt_factory_prefix( ) /** Get a value from the environment. */ -char *mlt_environment( char *name ) +char *mlt_environment( const char *name ) { return mlt_properties_get( global_properties, name ); } @@ -102,7 +143,7 @@ char *mlt_environment( char *name ) /** Fetch a producer from the repository. */ -mlt_producer mlt_factory_producer( char *service, void *input ) +mlt_producer mlt_factory_producer( const char *service, void *input ) { mlt_producer obj = NULL; @@ -110,16 +151,22 @@ mlt_producer mlt_factory_producer( char *service, void *input ) if ( service == NULL ) service = mlt_environment( "MLT_PRODUCER" ); - // Try to instantiate via the specified service - obj = mlt_repository_fetch( producers, service, input ); + // Offer the application the chance to 'create' + mlt_events_fire( event_object, "producer-create-request", service, input, &obj, NULL ); - if ( obj != NULL ) + // Try to instantiate via the specified service + if ( obj == NULL ) { - mlt_properties properties = mlt_producer_properties( obj ); - mlt_properties_set_int( properties, "_unique_id", ++ unique_id ); - mlt_properties_set( properties, "mlt_type", "producer" ); - if ( mlt_properties_get_int( properties, "_mlt_service_hidden" ) == 0 ) - mlt_properties_set( properties, "mlt_service", service ); + obj = mlt_repository_fetch( producers, service, input ); + mlt_events_fire( event_object, "producer-create-done", service, input, obj, NULL ); + if ( obj != NULL ) + { + mlt_properties properties = MLT_PRODUCER_PROPERTIES( obj ); + mlt_properties_set_int( properties, "_unique_id", ++ unique_id ); + mlt_properties_set( properties, "mlt_type", "producer" ); + if ( mlt_properties_get_int( properties, "_mlt_service_hidden" ) == 0 ) + mlt_properties_set( properties, "mlt_service", service ); + } } return obj; } @@ -127,12 +174,22 @@ mlt_producer mlt_factory_producer( char *service, void *input ) /** Fetch a filter from the repository. */ -mlt_filter mlt_factory_filter( char *service, void *input ) +mlt_filter mlt_factory_filter( 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, 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 properties = MLT_FILTER_PROPERTIES( obj ); mlt_properties_set_int( properties, "_unique_id", ++ unique_id ); mlt_properties_set( properties, "mlt_type", "filter" ); mlt_properties_set( properties, "mlt_service", service ); @@ -143,12 +200,22 @@ mlt_filter mlt_factory_filter( char *service, void *input ) /** Fetch a transition from the repository. */ -mlt_transition mlt_factory_transition( char *service, void *input ) +mlt_transition mlt_factory_transition( 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, 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 properties = MLT_TRANSITION_PROPERTIES( obj ); mlt_properties_set_int( properties, "_unique_id", ++ unique_id ); mlt_properties_set( properties, "mlt_type", "transition" ); mlt_properties_set( properties, "mlt_service", service ); @@ -159,22 +226,31 @@ mlt_transition mlt_factory_transition( char *service, void *input ) /** Fetch a consumer from the repository */ -mlt_consumer mlt_factory_consumer( char *service, void *input ) +mlt_consumer mlt_factory_consumer( const char *service, void *input ) { mlt_consumer obj = NULL; if ( service == NULL ) service = mlt_environment( "MLT_CONSUMER" ); - obj = mlt_repository_fetch( consumers, service, input ); + // 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, 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_filter filter = mlt_factory_filter( "data_show", NULL ); + mlt_properties properties = MLT_CONSUMER_PROPERTIES( obj ); mlt_properties_set_int( properties, "_unique_id", ++ unique_id ); mlt_properties_set( properties, "mlt_type", "consumer" ); mlt_properties_set( properties, "mlt_service", service ); - mlt_service_attach( mlt_consumer_service( obj ), mlt_factory_filter( "data_show", NULL ) ); + mlt_service_attach( MLT_CONSUMER_SERVICE( obj ), filter ); + mlt_filter_close( filter ); } return obj; } @@ -196,6 +272,7 @@ void mlt_factory_close( ) { if ( mlt_prefix != NULL ) { + mlt_properties_close( event_object ); mlt_repository_close( producers ); mlt_repository_close( filters ); mlt_repository_close( transitions );