X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_field.c;h=1a93cd9595669cbc7eef31c6d048549474c5b722;hb=1e55d8082c842d4ae2d718eb2675719eeb615c0c;hp=05a41e5503e64cde9c673e3cea0c8543ed905b56;hpb=52c1bb26fcbb895824cd9237c228ea4834ce1433;p=melted

diff --git a/src/framework/mlt_field.c b/src/framework/mlt_field.c
index 05a41e5..1a93cd9 100644
--- a/src/framework/mlt_field.c
+++ b/src/framework/mlt_field.c
@@ -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 this != NULL ? mlt_tractor_service( this->tractor ) : NULL;
+	return MLT_TRACTOR_SERVICE( this->tractor );
 }
 
 /** Get the multi track.
@@ -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;