diff -r 61bc0f252b2b -r bac7acad7cb3 camerauis/cameraapp/generic/inc/cameracontroller/mcamcameraobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/camerauis/cameraapp/generic/inc/cameracontroller/mcamcameraobserver.h	Wed Sep 01 12:30:54 2010 +0100
@@ -0,0 +1,80 @@
+/*
+* Copyright (c) 2007 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:  Camera observer interface.
+*
+*/
+
+
+#ifndef CAM_CAMERAOBSERVER_H
+#define CAM_CAMERAOBSERVER_H
+
+
+#include "camcameraevents.h"
+
+
+/**
+ *  MCamCameraObserver mixin.
+ *
+ */
+class MCamCameraObserver
+  {
+  public:
+    
+    /**
+    * Handle camera event.
+    *
+    * @param aStatus    Status code describing the event status.
+    * @param aEventId   Identifier for the event.
+    * @param aEventData Event associated data. If such data is provided with the event,
+    *                   it is mentioned in the documentation of particular event id.
+    *                   Ownership not transferred to observer.
+    */
+    virtual void HandleCameraEventL( TInt              aStatus, 
+                                     TCamCameraEventId aEventId, 
+                                     TAny*             aEventData = NULL ) = 0;
+  };
+
+
+/**
+* MCamCameraObservable mixin.
+*/
+class MCamCameraObservable
+  {
+  public:
+  
+    /**
+    * Attach a new observer.
+    * @param aObserver Observer to attach. If given observer is already attached,
+    *                  duplicate is not added and no error is reported.
+    * @param aInterest Observer event interest info. 
+    *                  TCamCameraEventClassId values ORed.
+    *                  If observer needs to change the interest info, it should
+    *                  first detach itself and then attach with new info.
+    */    
+    virtual void AttachObserverL( const MCamCameraObserver* aObserver,
+                                  const TUint&              aInterest ) = 0;
+    
+    
+    /**
+    * Detach an observer.
+    * @param aObserver Observer to detach. If given observer is not found 
+    *                  among attached observers, such an is simply ignored.
+    */
+    virtual void DetachObserver( const MCamCameraObserver* aObserver ) = 0;
+  };
+
+
+#endif // M_CAM_ENGINEOBSERVER_H
+
+// end of file