Prevent multiple starts on mlt_consumer.

diff --git a/src/framework/mlt_consumer.c b/src/framework/mlt_consumer.c
index 5a32d2fd8a053262600b58e5b62a691bacbfd27b..2e0a22c00fbc4536545bf58b9bf6d394f248d476 100644 (file)
--- a/src/framework/mlt_consumer.c
+++ b/src/framework/mlt_consumer.c
@@ -391,6 +391,9 @@ int mlt_consumer_connect( mlt_consumer self, mlt_service producer )
 
 int mlt_consumer_start( mlt_consumer self )
 {
+       if ( !mlt_consumer_is_stopped( self ) )
+               return 0;
+
        // Stop listening to the property-changed event
        mlt_event_block( self->event_listener );