Build and docs modifications

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

diff --git a/mlt++/src/MltService.cpp b/mlt++/src/MltService.cpp
index b836bea..03f8261 100644 (file)
--- a/mlt++/src/MltService.cpp
+++ b/mlt++/src/MltService.cpp
@@ -33,12 +33,18 @@ int Service::connect_producer( Service &producer, int index )
 
 Service *Service::producer( )
 {
-       return new ServiceInstance( mlt_service_producer( get_service( ) ) );
+       if ( get_service( ) != NULL )
+               return new ServiceInstance( mlt_service_producer( get_service( ) ) );
+       else
+               return NULL;
 }
 
 Service *Service::consumer( )
 {
-       return new ServiceInstance( mlt_service_consumer( get_service( ) ) );
+       if ( get_service( ) != NULL )
+               return new ServiceInstance( mlt_service_consumer( get_service( ) ) );
+       else
+               return NULL;
 }
 
 Frame *Service::get_frame( int index )