Run time type identification

[melted] / mlt++ / src / MltFilter.cpp

diff --git a/mlt++/src/MltFilter.cpp b/mlt++/src/MltFilter.cpp
index 7842f55..90a178e 100644 (file)
--- a/mlt++/src/MltFilter.cpp
+++ b/mlt++/src/MltFilter.cpp
@@ -47,6 +47,16 @@ Filter::Filter( char *id, char *arg ) :
        }
 }
 
+Filter::Filter( Service &filter ) :
+       instance( NULL )
+{
+       if ( filter.type( ) == filter_type )
+       {
+               instance = ( mlt_filter )filter.get_service( );
+               inc_ref( );
+       }
+}
+
 Filter::Filter( Filter &filter ) :
        instance( filter.get_filter( ) )
 {