--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtengines/videoteleng/Inc/Extensions/mvtengcamerapreferencesobserver.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,79 @@
+/*
+* Copyright (c) 2008 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:  Videoteleng Camera Preferences extension Observer
+*
+*/
+
+
+#ifndef MVTENGCAMERAPREFERENCESOBSERVER_H
+#define MVTENGCAMERAPREFERENCESOBSERVER_H
+
+//	INCLUDES
+#include <mvtengcamerapreferences.h>
+
+/**
+*  Camera preferences extension observer.
+*
+*  @lib videoteleng.lib
+*  @since S60 v5.0
+*/
+class MVtEngCameraPreferencesObserver
+    {
+
+public:
+
+    /**
+    * Called when observer is attached to camera preferences instance.
+    * @param aCamPrefs Reference to camera preferences instance this observer
+    * was attached to.
+    */
+    virtual void Attach( MVtEngCameraPreferences& aCamPrefs ) = 0;
+
+    /**
+    * Called when color tone is updated.
+    * @param aColorTone New color tone value.
+    */
+    virtual void ColorToneUpdated(
+        MVtEngCameraPreferences::TColorTone aColorTone ) = 0;
+
+    /**
+    * Called when white balance is updated.
+    * @param aWhiteBalance New white balance value.
+    */
+    virtual void WhiteBalanceUpdated(
+        MVtEngCameraPreferences::TWhiteBalance aWhiteBalance ) = 0;
+
+    /**
+    * Called when brightness is updated.
+    * @param aBrightness New brightness value set.
+    */
+    virtual void BrightnessUpdated( TInt aBrightness ) = 0;
+
+    /**
+    * Called when contrast is updated.
+    * @param aContrast New contrast value set.
+    */
+    virtual void ContrastUpdated( TInt aContrast ) = 0;
+
+    /**
+    * Called when observer is detached from camera preferences instance.
+    * @param aCamPrefs Reference to camera preferences instance this observer
+    * was detached from.
+    */
+    virtual void Detach( MVtEngCameraPreferences& aCamPrefs ) = 0;
+
+    };
+
+#endif // MVTENGCAMERAPREFERENCESOBSERVER_H
+