1 files changed, 7 insertions, 0 deletions
diff --git a/ingen/EngineBase.hpp b/ingen/EngineBase.hpp
index a57743fe..19f66cb7 100644
--- a/ingen/EngineBase.hpp
+++ b/ingen/EngineBase.hpp
@@ -23,10 +23,12 @@
 
 #include "ingen/ingen.h"
 #include "ingen/types.hpp"
+#include "lilv/lilv.h"
 
 namespace Ingen {
 
 class Interface;
+class Node;
 
 /**
    The audio engine which executes the graph.
@@ -49,6 +51,11 @@ public:
 	                  size_t   seq_size) = 0;
 
 	/**
+	   Return the LV2 instance of a block if possible, or NULL.
+	*/
+	virtual LilvInstance* block_instance(Node* node) = 0;
+
+	/**
 	   Activate the engine.
 	*/
 	virtual bool activate() = 0;