diff -r 000000000000 -r 9b3e960ffc8a camappengine/Engine/Inc/CaeCallbackActive.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/camappengine/Engine/Inc/CaeCallbackActive.h	Thu Dec 17 08:51:24 2009 +0200
@@ -0,0 +1,128 @@
+/*
+* Copyright (c) 2003,2004 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Active object for calling Camera Application Engine methods 
+*                indirectly from callbacks
+*
+*/
+
+
+
+#ifndef CAECALLBACKACTIVE_H
+#define CAECALLBACKACTIVE_H
+
+// INCLUDES
+#include <e32base.h>
+#include <e32std.h>
+
+// FORWARD DECLARATIONS
+class CCaeEngineImp;
+
+
+// CLASS DECLARATION
+
+/**
+* CCaeCallbackActive
+* Active object for calling Camera Application Engine methods 
+* indirectly from callbacks 
+*/
+NONSHARABLE_CLASS( CCaeCallbackActive ) : public CActive
+    {
+    public: // Constructors and destructor
+        
+        /**
+        * Symbian OS two-phased constructor.
+        * @since 2.1
+        * @param aCamAppEngine Reference to CCaeEngineImp instance
+        */
+        static CCaeCallbackActive* NewLC( 
+            CCaeEngineImp& aCamAppEngine );
+
+        /**
+        * Symbian OS two-phased constructor.
+        * @since 2.1
+        * @param aCamAppEngine Reference to CCaeEngineImp instance
+        */
+        static CCaeCallbackActive* NewL( 
+            CCaeEngineImp& aCamAppEngine );
+
+        /**
+        * Destructor.
+        */
+        virtual ~CCaeCallbackActive();
+
+    protected: // Constructors and destructor
+        
+        /**
+        * Symbian OS 2nd phase constructor that can leave.
+        */
+        void ConstructL();
+
+        /**
+        * C++ constructor.
+        * @since 2.1
+        * @param aCamAppEngine Reference to CCaeEngineImp instance
+        */
+        CCaeCallbackActive( 
+            CCaeEngineImp& aCamAppEngine );
+
+    public: // New methods
+
+        /**
+        * Switches camera module power on.
+        * @since 2.1
+        * @return void
+        */
+        void PowerOn();
+
+    public: // Methods from CActive (was protected)
+        
+        /**
+        * Calls Camera Application Engine operation.
+        * @return void
+        */
+        void RunL();
+
+    protected: // Methods from CActive
+
+        /**
+        * Cancels request.
+        * @return void
+        */
+        void DoCancel();
+
+    private:
+
+        // Timer to implement delayed operation calls.
+        RTimer iTimer;
+
+        // Reference to Camera Application Engine.
+        CCaeEngineImp& iCamAppEngine;
+
+        // Requests available.
+        enum TRequest
+            {
+            /** Default */
+            ERequestDefault,
+            /** Switch camera power on */
+            ERequestPowerOn,
+            };
+
+        // Request.
+        TRequest iRequest;
+
+    };
+
+#endif // CAECALLBACKACTIVE_H
+
+// End of File