--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/skins/AknSkins/rlplugininc/AknsRlEffectPluginNoise.h	Thu Dec 17 09:14:12 2009 +0200
@@ -0,0 +1,118 @@
+/*
+* Copyright (c) 2004-2008 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:  Adds grayscale noise to bitmap image.
+*
+*/
+
+
+#ifndef AKNSRLEFFECTPLUGINNOISE_H
+#define AKNSRLEFFECTPLUGINNOISE_H
+
+//  INCLUDES
+#include "AknsRlEffectPlugin.h"
+#include <AknsRlEffect.h>
+
+// CONSTANTS
+
+// Effect plugin UID
+const TInt KAknsRlEffectPluginNoiseUID = 0x10204AE5;
+
+// Constants for parameter names
+_LIT( KAknsRlEffectNoiseSeed, "s" );
+_LIT( KAknsRlEffectNoiseIntensity, "i" );
+
+// CLASS DECLARATION
+
+/**
+* Provides functionality to add grayscale noise to bitmap image. The Symbian
+* pseudo-random generator is used for generating the noise.
+*
+* @since 2.8
+*/
+NONSHARABLE_CLASS(CAknsRlEffectPluginNoise):
+    public CAknsRlEffectPlugin,
+    public MAknsRlEffect
+    {
+    public: // Constructors and destructor
+
+        /**
+        * Default constructor.
+        *
+        * @since 2.8
+        */
+        CAknsRlEffectPluginNoise();
+
+        /**
+        * Destructor.
+        *
+        * @since 2.8
+        */
+        virtual ~CAknsRlEffectPluginNoise();
+
+    public: // Implementation of CAknsEffectPlugin
+
+        TUid EffectUid() const;
+        MAknsRlEffect* Effect( const TInt aInterface );
+
+    public: // Implementation of MAknsRlEffect
+
+        void InitializeL();
+        void Release();
+
+        void ActivateL( MAknsRlEffectContext* aContext );
+        void Deactivate();
+
+        /**
+        * Accepted named parameters:
+        * - "s", integer, noise seed
+        * - "i", integer, noise intensity
+        *
+        * Noise seed:
+        * The seed passed to random number generator.
+        *
+        * Noise intensity:
+        * Determines the strength of the noise added to the image. With
+        * intensity 0 the result will be the original image. The more the value
+        * differs from zero the stronger the noise effect will be. Normal range
+        * is [0, 255] but values outside the range work.
+        *
+        * The default parameter values are:
+        * - "s" = 0
+        * - "i" = 127
+        */
+        void SetParametersL( MAknsRlParameterIterator& aParameters );
+
+        /**
+        * Supported modes:
+        * - EColor64K -> EColor64K
+        * - EColor16MU -> EColor16MU
+        * - EGray256 -> EGray256
+        *
+        * Masks are ignored. Target layer and input layer A are both required.
+        */
+        void GetCapabilities( TAknsRlEffectCaps& aCaps );
+
+        TInt Render( const TAknsRlRenderOpParam& aParam );
+
+    private:
+
+        MAknsRlEffectContext* iContext;
+
+        TInt iSeed;
+        TInt iIntensity;
+    };
+
+#endif // AKNSRLEFFECTPLUGINNOISE_H
+
+// End of File