--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imagehandlinglib/Src/CIHLScaler.h	Tue Jan 26 15:18:05 2010 +0200
@@ -0,0 +1,204 @@
+/*
+* 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:  Implementation of bitmap scaler class
+*              : using Font and Bitmap Server bitmaps.
+*
+*/
+
+#ifndef CIHLSCALER_H
+#define CIHLSCALER_H
+
+// INCLUDES
+#include <MIHLScaler.h>
+#include <e32base.h>
+#include <gdi.h>
+
+// Define this to show throughput measurements
+//#define RD_MEASURE_THROUGHPUT
+
+// FORWARD DECLARATIONS
+class CFbsBitmap;
+
+// CLASS DECLARATION
+/**
+*  CIHLScaler
+*
+*  Implementation of Scaling processor
+*  using Font and Bitmap Server bitmaps.
+*  @lib IHL.lib
+*  @since 3.0
+*/
+NONSHARABLE_CLASS( CIHLScaler ) : public CActive, public MIHLScaler
+    {
+    public: // Constructors and destructor
+
+        /**
+        * Two-phased constructor.
+        */
+        static CIHLScaler* NewL( const TUint32 aOptions = 0 );
+
+        /*
+        * Virtual destructor.
+        */
+        virtual ~CIHLScaler();
+
+    public: // From base class MIHLScaler
+
+        /*
+        * From MIHLScaler, see base class header.
+        */
+		TInt Scale( TRequestStatus& aStatus,
+					const CFbsBitmap& aSrcBitmap,
+					const TRect& aSrcRect,
+					CFbsBitmap& aDstBitmap,
+					const TRect& aDstRect );
+
+        /*
+        * From MIHLScaler, see base class header.
+        */
+		TBool IsBusy() const;
+
+        /*
+        * From MIHLScaler, see base class header.
+        */
+		void CancelProcess();
+
+        /*
+        * From MIHLScaler, see base class header.
+        */
+		void SetFilter( MIHFilter* aFilter );
+
+	private: // From base class CActive
+
+        /*
+        * From CActive, see base class header.
+        */
+		void DoCancel();
+
+        /*
+        * From CActive, see base class header.
+        */
+		void RunL();
+
+        /*
+        * From CActive, see base class header.
+        */
+		TInt RunError( TInt aError );
+
+	public: // Internal interface
+
+        /**
+        * Check if rectangle is inside size.
+        * @since 3.0
+		* @return ETrue if rectangle is fully inside given area, EFalse if not.
+		*/
+		TBool IsValidRect( const TSize& aSize, const TRect& aRect );
+
+	private: // Private methods
+
+        /*
+        * Initialize process parameters and stepper values.
+        * @return ETrue if only doing scaling (and not rotating)
+        */
+		TBool InitStepperValues();
+		
+		/*
+        * Select and initialize fastest possible code path
+        */
+        
+		void InitCodePath(const TSize& aSrcSize, const TDisplayMode &aSrcMode, const TSize& aDstSize, const TDisplayMode &aDstMode, TBool aOnlyScaling);
+
+        /*
+        * Process step using nearest neighbour method.
+        */
+		TBool ProcessNearestNeighbour();
+		TBool ProcessNearestNeighbour64K();           // For 16-bit non-compressed bitmaps
+		TBool ProcessNearestNeighbour64KScaleOnly();  // For 16-bit non-compressed bitmaps (only scaling)
+		TBool ProcessNearestNeighbour16MX();          // For 32-bit non-compressed bitmaps
+		TBool ProcessNearestNeighbour16MXScaleOnly(); // For 32-bit non-compressed bitmaps (only scaling)
+				
+        /*
+        * Process step using bilinear interpolation method.
+        */
+		TBool ProcessBilinear();
+
+        /*
+        * Complete dummy request. This causes RunL() method to be called.
+        * Needed by state machine.
+        */
+		void SelfComplete();
+
+        /*
+        * Complete client process request.
+        * This causes client RunL() method to be called.
+        */
+		void RequestComplete( TInt aReason );
+
+	private: // Private constructors
+
+        CIHLScaler( const TUint32 aOptions );
+
+    private: // Data
+
+		// Ref: Process status
+		TRequestStatus* iScalerStatus;
+        TBool iNeedProcess;
+
+		// Process options
+		const TUint32 iOptions;
+
+        // Ref: Source bitmap
+		const CFbsBitmap* iSrcBitmap;
+		TRect iSrcRect;
+
+		// Ref: Destination bitmaps
+		CFbsBitmap* iDstBitmap;
+		TRect iDstRect;
+
+		// Process position and stepping
+		TPoint iSrcIncrementInner;
+		TPoint iSrcIncrementOuter;
+		TPoint iSrcPos;
+
+		TInt iDstIncrementInner;
+		TInt iDstIncrementOuter;
+		TPoint iDstPos;
+
+		TInt iProcessInner;
+		TInt iProcessOuter;
+		TSize iProcessSize;
+		
+		// For fast code path
+		TInt iSrcPitchInPixels;
+		TInt iDstPitchInPixels;
+		TUint32 iScanlinesLeft;
+		TUint32 iScanlinesPerRound;
+		TInt iDstStartOffset;
+		TInt iDstResidualPixels;
+		
+		// Only for measuring scaler throughput
+#ifdef RD_MEASURE_THROUGHPUT
+		TUint32 iStartTime;
+#endif
+		
+		/*
+        * Forward process step event to selected processing code path
+        * Called by RunL() method.
+        */
+		TBool (CIHLScaler::*ProcessingFunc)();
+    };
+
+#endif // CIHLSCALER_H
+
+// End of File