diff -r 15bf7259bb7c -r d8a3531bc6b8 uiacceltk/hitchcock/CommonInc/alfrenderstageutils.h
--- a/uiacceltk/hitchcock/CommonInc/alfrenderstageutils.h	Tue Feb 02 07:56:43 2010 +0200
+++ b/uiacceltk/hitchcock/CommonInc/alfrenderstageutils.h	Mon Feb 22 17:57:49 2010 +0200
@@ -18,6 +18,10 @@
 #ifndef _ALFRSUAPI_H_
 #define _ALFRSUAPI_H_
 
+#include <e32std.h>
+
+class MWsWindowTreeNode;
+
 const TInt KAlfCompositionAgnosticWindowTreeObserverInterfaceId(0x2002BCFB);
     
 class MAlfCompositionAgnosticWindowTreeObserver
@@ -78,7 +82,7 @@
     virtual void MovedToWindowGroup(const MWsWindowTreeNode& aWindowTreeNode, const MWsWindowTreeNode& aNewWindowGroupNode) = 0;
     virtual void WindowGroupChained(const MWsWindowTreeNode& aParent, const MWsWindowTreeNode& aChild) = 0;
     virtual void WindowGroupChainBrokenAfter(const MWsWindowTreeNode& aWindowGroupNode) = 0;
-    virtual void FadeAllChildren(const MWsWindowTreeNode& aWindowTreeNode, TBool aFaded) = 0;
+    virtual void FadeAllChildren(const MWsWindowTreeNode& aWindowTreeNode, TBool aFaded) = 0;    
     };
 
 class RAlfBridgerClient;
@@ -99,4 +103,34 @@
     virtual RAlfBridgerClient* Client() = 0;
     };
 
+/**
+ * Synchronization interface
+ */
+class MAlfSynchronizationInterface
+    {
+public:
+    /**
+     * Start synchronization. 
+     * @param aId This will contain identifier for this synchronization.
+     * @return error code, KErrNone if synchronization is started.
+     */
+    virtual TInt Synchronize(TInt& aId) = 0;
+    };
+
+/**
+ * Use this UID as parameter when resolving MAlfSynchronizationInterface 
+ * interface.
+ */
+const TUint32 KAlfSynchronizationInterfaceUid = 0x2002C357;
+
+/**
+ * Category for P&S variable for synchronization finished indication.
+ */
+const TUid KAlfPSUidSynchronizer = { 0x10003B20 };
+
+/**
+ * Key for P&S variable for synchronization finished indication.
+ */
+const TUint32 KAlfPSKeySynchronizer = 0x2002C357;
+
 #endif // _ALFRSUAPI_H_