X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fmodules%2Fcore%2Ftransition_region.c;h=aa7b660aeb388ad29520f9c5877aa2ce55b09f39;hb=2f768c42c67ec9802222032f6d2bc63d7a3c6afb;hp=2cbc97873c9c13f3d3f09a68b5cb15f867964cb7;hpb=fd3aef837f5389623f29fee989c74f056723aa4c;p=melted

diff --git a/src/modules/core/transition_region.c b/src/modules/core/transition_region.c
index 2cbc978..aa7b660 100644
--- a/src/modules/core/transition_region.c
+++ b/src/modules/core/transition_region.c
@@ -91,6 +91,8 @@ static int create_instance( mlt_transition this, char *name, char *value, int co
 
 static uint8_t *filter_get_alpha_mask( mlt_frame this )
 {
+	uint8_t *alpha = NULL;
+
 	// Obtain properties of frame
 	mlt_properties properties = mlt_frame_properties( this );
 
@@ -107,7 +109,41 @@ static uint8_t *filter_get_alpha_mask( mlt_frame this )
 	mlt_properties_set( mlt_frame_properties( shape_frame ), "distort", "true" );
 	mlt_frame_get_image( shape_frame, &image, &format, &region_width, &region_height, 0 );
 
-	return mlt_frame_get_alpha_mask( shape_frame );
+	alpha = mlt_frame_get_alpha_mask( shape_frame );
+
+	// Generate from the Y component of the image if no alpha available
+	if ( alpha == NULL )
+	{
+		int size = region_width * region_height;
+		uint8_t *p = mlt_pool_alloc( size );
+		alpha = p;
+		while ( size -- )
+		{
+			*p ++ = *image ++;
+			image ++;
+		}
+		mlt_properties_set_data( mlt_frame_properties( shape_frame ), "alpha", alpha, 
+								 region_width * region_height, mlt_pool_release, NULL );
+	}
+
+	return alpha;
+}
+
+static void apply_filters( mlt_filter this, mlt_frame frame, int index )
+{
+	mlt_service service = mlt_filter_service( this );
+	mlt_properties properties = mlt_filter_properties( this );
+	int i;
+
+	if ( index == 0 || mlt_properties_get_int( properties, "_filter_private" ) == 0 )
+	{
+		mlt_filter filter = NULL;
+		for ( i = 0; ( filter = mlt_service_filter( service, i ) ) != NULL; i ++ )
+		{
+			mlt_filter_process( filter, frame );
+			apply_filters( filter, frame, 1 );
+		}
+	}
 }
 
 /** Do it :-).
@@ -278,6 +314,11 @@ static int transition_get_image( mlt_frame frame, uint8_t **image, mlt_image_for
 			filter = mlt_properties_get_data( properties, id, NULL );
 		}
 
+		// Allow filters to be attached to a region filter
+		filter = mlt_properties_get_data( properties, "_region_filter", NULL );
+		if ( filter != NULL )
+			apply_filters( filter, b_frame, 0 );
+
 		// Hmm - this is probably going to go wrong....
 		mlt_frame_set_position( frame, position );