X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_field.c;h=d1409d64b030eea5a66ef387a438fda81c0b9254;hb=bf3264b9e340ba5c11cbf59835a8af3db94e0cc2;hp=8a7f51f47f2595e1c75c5fce47d63858dc6734bc;hpb=7c518e80321a87a22d2e48835442c9f5b70dcd17;p=melted

diff --git a/src/framework/mlt_field.c b/src/framework/mlt_field.c
index 8a7f51f..d1409d6 100644
--- a/src/framework/mlt_field.c
+++ b/src/framework/mlt_field.c
@@ -3,19 +3,19 @@
  * 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 "mlt_field.h"
@@ -63,7 +63,32 @@ mlt_field mlt_field_init( )
 		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 );
@@ -78,7 +103,7 @@ mlt_field mlt_field_init( )
 
 mlt_service mlt_field_service( mlt_field this )
 {
-	return mlt_tractor_service( this->tractor );
+	return MLT_TRACTOR_SERVICE( this->tractor );
 }
 
 /** Get the multi track.
@@ -86,7 +111,7 @@ mlt_service mlt_field_service( mlt_field this )
 
 mlt_multitrack mlt_field_multitrack( mlt_field this )
 {
-	return this->multitrack;
+	return this != NULL ? this->multitrack : NULL;
 }
 
 /** Get the tractor.
@@ -94,7 +119,7 @@ mlt_multitrack mlt_field_multitrack( mlt_field this )
 
 mlt_tractor mlt_field_tractor( mlt_field this )
 {
-	return this->tractor;
+	return this != NULL ? this->tractor : NULL;
 }
 
 /** Get the properties associated to this field.
@@ -102,7 +127,7 @@ mlt_tractor mlt_field_tractor( mlt_field this )
 
 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.
@@ -117,10 +142,13 @@ int mlt_field_plant_filter( mlt_field this, mlt_filter that, int track )
 	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;
@@ -138,10 +166,13 @@ int mlt_field_plant_transition( mlt_field this, mlt_transition that, int a_track
 	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;
@@ -152,8 +183,11 @@ int mlt_field_plant_transition( mlt_field this, mlt_transition that, int a_track
 
 void mlt_field_close( mlt_field this )
 {
-	mlt_tractor_close( this->tractor );
-	mlt_multitrack_close( this->multitrack );
-	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 );
+	}
 }