-/*
- * mlt_field.c -- A field for planting multiple transitions and filters
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_field.c
+ * \brief a field for planting multiple transitions and filters
*
- * 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.
+ * Copyright (C) 2003-2008 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
*
- * This program is distributed in the hope that it will be useful,
+ * 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 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 "mlt_field.h"
#include <stdlib.h>
#include <string.h>
-/** Private structures.
-*/
+/** \brief Field class
+ *
+ */
struct mlt_field_s
{
};
/** Constructor.
-
+
We construct a multitrack and a tractor here.
*/
this->tractor = mlt_tractor_init( );
// The first plant will be connected to the mulitrack
- this->producer = mlt_multitrack_service( this->multitrack );
+ this->producer = MLT_MULTITRACK_SERVICE( this->multitrack );
+
+ // Connect the tractor to the multitrack
+ mlt_tractor_connect( this->tractor, this->producer );
+ }
+
+ // Return this
+ return this;
+}
+
+mlt_field mlt_field_new( mlt_multitrack multitrack, mlt_tractor tractor )
+{
+ // Initialise the field
+ mlt_field this = calloc( sizeof( struct mlt_field_s ), 1 );
+
+ // Initialise it
+ if ( this != NULL )
+ {
+ // Construct a multitrack
+ this->multitrack = multitrack;
+
+ // Construct a tractor
+ this->tractor = tractor;
+
+ // The first plant will be connected to the mulitrack
+ this->producer = MLT_MULTITRACK_SERVICE( this->multitrack );
// Connect the tractor to the multitrack
mlt_tractor_connect( this->tractor, this->producer );
mlt_service mlt_field_service( mlt_field this )
{
- return mlt_tractor_service( this->tractor );
+ return MLT_TRACTOR_SERVICE( this->tractor );
}
/** Get the multi track.
mlt_multitrack mlt_field_multitrack( mlt_field this )
{
- return this->multitrack;
+ return this != NULL ? this->multitrack : NULL;
}
/** Get the tractor.
mlt_tractor mlt_field_tractor( mlt_field this )
{
- return this->tractor;
+ return this != NULL ? this->tractor : NULL;
}
/** Get the properties associated to this field.
mlt_properties mlt_field_properties( mlt_field this )
{
- return mlt_service_properties( mlt_field_service( this ) );
+ return MLT_SERVICE_PROPERTIES( mlt_field_service( this ) );
}
/** Plant a filter.
if ( result == 0 )
{
// This is now the new producer
- this->producer = mlt_filter_service( that );
+ this->producer = MLT_FILTER_SERVICE( that );
// Reconnect tractor to new producer
mlt_tractor_connect( this->tractor, this->producer );
+
+ // Fire an event
+ mlt_events_fire( mlt_field_properties( this ), "service-changed", NULL );
}
return result;
if ( result == 0 )
{
// This is now the new producer
- this->producer = mlt_transition_service( that );
+ this->producer = MLT_TRANSITION_SERVICE( that );
// Reconnect tractor to new producer
mlt_tractor_connect( this->tractor, this->producer );
+
+ // Fire an event
+ mlt_events_fire( mlt_field_properties( this ), "service-changed", NULL );
}
return 0;
void mlt_field_close( mlt_field this )
{
- free( this );
+ if ( this != NULL && mlt_properties_dec_ref( mlt_field_properties( this ) ) <= 0 )
+ {
+ //mlt_tractor_close( this->tractor );
+ //mlt_multitrack_close( this->multitrack );
+ free( this );
+ }
}
+void mlt_field_disconnect_service( mlt_field self, mlt_service service )
+{
+ mlt_service p = mlt_service_producer( service );
+ mlt_service c = mlt_service_consumer( service);
+ int i;
+ switch ( mlt_service_identify(c) )
+ {
+ case filter_type:
+ i = mlt_filter_get_track( MLT_FILTER(c) );
+ mlt_service_connect_producer( c, p, i );
+ break;
+ case transition_type:
+ i = mlt_transition_get_a_track ( MLT_TRANSITION(c) );
+ mlt_service_connect_producer( c, p, i );
+ MLT_TRANSITION(c)->producer = p;
+ break;
+ case tractor_type:
+ self->producer = p;
+ mlt_tractor_connect( MLT_TRACTOR(c), p );
+ default:
+ break;
+ }
+ mlt_events_fire( mlt_field_properties( self ), "service-changed", NULL );
+}
projects / mlt / blobdiff