--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtprotocolplugins/DisplaySink/inc/CVtImageScalerImplNearest.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,138 @@
+/*
+* Copyright (c) 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:    Image Transforms subsystem.
+*
+*/
+
+
+
+
+#ifndef CVTIMAGESCALERIMPLNEAREST_H
+#define CVTIMAGESCALERIMPLNEAREST_H
+
+// INCLUDE FILES
+
+#include "CVtImageScalerImpl.h"
+
+// CLASS DECLARATIONS
+
+/**
+*  Nearest neigbour image scaling implementation.
+*
+*  @lib videosource.lib
+*/
+class CVtImageScalerImplNearest : public CVtImageScalerImpl
+    {
+    private: // from CVtImageScalerImpl
+
+        /**
+        * From CVtImageScalerImpl. Check CVtImageScalerImpl for description.
+        */
+        TInt Scale( TBool& aContinue );
+
+    private:
+
+        /**
+        * Validate given parameters.
+        */
+        void ValidateSourceTargetL(
+            const CVtImage& aSource,
+            CVtImage& aTarget );
+
+        /**
+        * Initializes internal variables for scaling.
+        */
+        void Initialize();
+
+        /**
+        * Scales images in displaymode EColor4K.
+        */
+        void Scale4K(
+            const TUint16* aSrcPtr,
+            TUint32 aSrcPitch,
+            TUint16* aTrgPtr,
+            TUint32 aTrgWidth,
+            TUint32 aTrgHeight,
+            TUint32 aDx,
+            TUint32 aDy );
+
+        /**
+        * Scales images in displaymode EColor64K.
+        */
+        void Scale64K(
+            const TUint16* aSrcPtr,
+            TUint32 aSrcPitch,
+            TUint16* aTrgPtr,
+            TUint32 aTrgWidth,
+            TUint32 aTrgHeight,
+            TUint32 aDx,
+            TUint32 aDy );
+
+        /**
+        * Scales images in displaymode EColor16M.
+        */
+        void Scale16M(
+            const TUint8* aSrcPtr,
+            TUint32 aSrcPitch,
+            TUint8* aTrgPtr,
+            TUint32 aTrgWidth,
+            TUint32 aTrgHeight,
+            TUint32 aTrgPitch,
+            TUint32 aDx,
+            TUint32 aDy );
+
+        /**
+        * Scales images in displaymodes EColor16MU and EColor16MA.
+        */
+        void Scale16MU16MA(
+            const TUint32* aSrcPtr,
+            TUint32 aSrcPitch,
+            TUint32* aTrgPtr,
+            TUint32 aTrgWidth,
+            TUint32 aTrgHeight,
+            TUint32 aDx,
+            TUint32 aDy );
+
+        /**
+        * Fast scaling when target is double the source size for
+        * 4K and 64K display modes.
+        */
+        void Scale2x4K64K();
+
+        /**
+        * Fast scaling when target is double the source size for 16M
+        * display mode.
+        */
+        void Scale2x16M();
+
+        /**
+        * Fast scaling when target is double the source size for 16MU and 16MA
+        * display modes.
+        */
+        void Scale2x16MU16MA();
+
+    private:
+
+        // Target width ratio to source width
+        TUint32 iU;
+
+        // Target height ratio to source height
+        TUint32 iV;
+    };
+
+#endif // CVTIMAGESCALERIMPLNEAREST_H
+
+// End of File
+
+