--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/collectionframework/thumbnailcreator/inc/glxtnimageutility.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,148 @@
+/*
+* Copyright (c) 2008-2009 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:    Utility for creating bitmaps from image files
+*
+*/
+
+
+
+
+/**
+ * @internal reviewed 30/07/2007 by Simon Brooks
+ */
+
+#ifndef GLXTNIMAGEUTILITY_H
+#define GLXTNIMAGEUTILITY_H
+
+#include <e32base.h>
+#include <gdi.h>        // For TDisplayMode
+
+class MIHLScaler;
+class CFbsBitmap;
+class CFbsBitGc;
+class CImageDecoder;
+class RFs;
+
+/**
+ * Utility for creating bitmaps from image files
+ *
+ * @ingroup glx_thumbnail_creator
+ */
+NONSHARABLE_CLASS(CGlxtnImageUtility) : public CBase
+    {
+public:
+    CGlxtnImageUtility(RFs& aFs);
+    ~CGlxtnImageUtility();
+
+    void Cancel();
+
+    /**
+    * Reduce target size to same aspect ratio as source image.
+    */
+    void AdjustSize(TSize& aTargetSize, const TSize& aSourceSize);
+
+    /**
+    * Start asynchronous decoding process for a high quality thumbnail.
+    * @param aStatus Request status for the asynchronous operation.
+    * @param aFileName Full path of image file.
+    * @param aTargetSize Size for the image - modified by this function to
+    *           preserve the aspect ratio.
+    * @param aMode Display mode for the image.
+    */
+    CFbsBitmap* DecodeImageL(TRequestStatus& aStatus, const TDesC& aFileName,
+                                RArray<TSize>& aTargetSizes, TDisplayMode aMode);
+
+    /**
+    * Free resources used by decoding.
+    */
+    void FreeDecoder();
+
+    /**
+    * Get the original size of the image decoded.
+    */
+    const TSize& OriginalSize() const;
+
+    /**
+    * Start asynchronous filtering process for a high quality thumbnail.
+    * @param aStatus Request status for the asynchronous operation.
+    * @param aSource Source image bitmap.
+    * @param aFilteredSource Filtered  image bitmap.
+    * @param aTarget Target thumbnail bitmap.
+    */
+    void FilterImageL(TRequestStatus* aStatus, CFbsBitmap* aSource, CFbsBitmap*& aFilteredSource, CFbsBitmap* aTarget);
+    
+    /**
+    * Start asynchronous scaling process for a high quality thumbnail.
+    * @param aStatus Request status for the asynchronous operation.
+    * @param aSrcBitmap Source image bitmap.
+    * @param aSrcRect Source image rectangle.
+    * @param aDstBitmap Destination thumbnail bitmap.
+    * @param aDstRect Destination image rectangle.
+    */
+	void ScaleImageL(TRequestStatus& aStatus, CFbsBitmap& aSrcBitmap, const TRect& aSrcRect, CFbsBitmap& aDstBitmap, const TRect& aDstRect);
+
+    /**
+    * Start asynchronous scaling process for a high quality thumbnail.
+    * @param aStatus Request status for the asynchronous operation.
+    * @param aSource Source image bitmap.
+    * @param aFilteredSource Filtered Source image bitmap.
+    * @param aTarget Target thumbnail bitmap.
+    */
+    void ScaleImage64kL(TRequestStatus* aStatus, CFbsBitmap* aSource, CFbsBitmap* aFilteredSource, CFbsBitmap* aTarget);
+
+private:
+    
+    void ScaleColor64K( TUint16* aSrc, TInt aSrcStride, TInt aSrcCols, TInt aSrcRows,
+	  								TInt aX, TInt aY, TInt aW, TInt aH,
+          		      TUint16* aDst, TInt aDstStride, TInt aDstCols, TInt aDstRows );
+          		      
+    void FilterL( CFbsBitmap* aSource, CFbsBitmap*& aFilteredSource, TInt aFilterPercent );
+
+    void FIRFiltering(
+		TUint16* aDst, TUint aDstStridep, TUint aDstCols, TUint aDstRows );
+
+    void FIRFiltering4(
+		TUint16* aDst, TUint aDstStridep, TUint aDstCols, TUint aDstRows );
+
+    void FIRFiltering8(
+		TUint16* aDst, TUint aDstStridep, TUint aDstCols, TUint aDstRows );
+    /*
+     * Get the orientation of the file
+     * This API reads the Exif tag in an image and returns the orientation of that Image 
+     */
+    TUint16 GetOrientationL(const TDesC& aFileName) ;
+    /*
+     * Get the Rotation Angle and Mirroring status of the image so as to set it on the decoder 
+     * This API calculates the rotation angle and the Mirroring status required by the decoder
+     * @param aOrientation Orientation of the image.
+     * @param aRotAngle Rotation angle to be set on the image decoder.
+     * @param aFlipStatus Mirroring status for the decoder if 1 then mirroring should be set.
+     * Internally it also sets the iOriginalSize to the required size
+     */
+    void GetRotationParameters(TUint16 aOrientation, TInt& aRotAngle, TBool& aFlipStatus) ;
+private:
+    // File server session
+    RFs& iFs;
+    // Decoder used to read image from file
+    CImageDecoder* iDecoder;
+    // Bitmap scaler
+    MIHLScaler* iScaler;
+    /** Size of the image in the file being decoded */
+    TSize iOriginalSize;
+    CFbsBitmap* iImage;
+    TUint16* iAddress;
+    CFbsBitGc* iBitGc;
+    };
+
+#endif  // GLXTNIMAGEUTILITY_H