author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 00:17:18 +0300 | |
changeset 70 | a91aa46552be |
parent 23 | 74c9f037fd5d |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Utility for creating bitmaps from image files |
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* |
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*/ |
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/** |
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* @internal reviewed 30/07/2007 by Simon Brooks |
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*/ |
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#ifndef GLXTNIMAGEUTILITY_H |
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#define GLXTNIMAGEUTILITY_H |
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#include <e32base.h> |
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#include <gdi.h> // For TDisplayMode |
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class MIHLScaler; |
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class CFbsBitmap; |
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class CFbsBitGc; |
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class CImageDecoder; |
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class RFs; |
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/** |
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* Utility for creating bitmaps from image files |
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* |
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* @ingroup glx_thumbnail_creator |
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*/ |
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NONSHARABLE_CLASS(CGlxtnImageUtility) : public CBase |
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{ |
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public: |
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CGlxtnImageUtility(RFs& aFs); |
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~CGlxtnImageUtility(); |
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void Cancel(); |
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/** |
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* Reduce target size to same aspect ratio as source image. |
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*/ |
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void AdjustSize(TSize& aTargetSize, const TSize& aSourceSize); |
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/** |
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* Start asynchronous decoding process for a high quality thumbnail. |
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* @param aStatus Request status for the asynchronous operation. |
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* @param aFileName Full path of image file. |
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* @param aTargetSize Size for the image - modified by this function to |
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* preserve the aspect ratio. |
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* @param aMode Display mode for the image. |
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*/ |
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CFbsBitmap* DecodeImageL(TRequestStatus& aStatus, const TDesC& aFileName, |
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RArray<TSize>& aTargetSizes, TDisplayMode aMode); |
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/** |
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* Free resources used by decoding. |
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*/ |
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void FreeDecoder(); |
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/** |
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* Get the original size of the image decoded. |
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*/ |
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const TSize& OriginalSize() const; |
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/** |
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* Start asynchronous filtering process for a high quality thumbnail. |
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* @param aStatus Request status for the asynchronous operation. |
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* @param aSource Source image bitmap. |
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* @param aFilteredSource Filtered image bitmap. |
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* @param aTarget Target thumbnail bitmap. |
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*/ |
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void FilterImageL(TRequestStatus* aStatus, CFbsBitmap* aSource, CFbsBitmap*& aFilteredSource, CFbsBitmap* aTarget); |
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/** |
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* Start asynchronous scaling process for a high quality thumbnail. |
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* @param aStatus Request status for the asynchronous operation. |
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* @param aSrcBitmap Source image bitmap. |
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* @param aSrcRect Source image rectangle. |
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* @param aDstBitmap Destination thumbnail bitmap. |
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* @param aDstRect Destination image rectangle. |
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*/ |
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void ScaleImageL(TRequestStatus& aStatus, CFbsBitmap& aSrcBitmap, const TRect& aSrcRect, CFbsBitmap& aDstBitmap, const TRect& aDstRect); |
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/** |
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* Start asynchronous scaling process for a high quality thumbnail. |
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* @param aStatus Request status for the asynchronous operation. |
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* @param aSource Source image bitmap. |
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* @param aFilteredSource Filtered Source image bitmap. |
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* @param aTarget Target thumbnail bitmap. |
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*/ |
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void ScaleImage64kL(TRequestStatus* aStatus, CFbsBitmap* aSource, CFbsBitmap* aFilteredSource, CFbsBitmap* aTarget); |
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private: |
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void ScaleColor64K( TUint16* aSrc, TInt aSrcStride, TInt aSrcCols, TInt aSrcRows, |
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TInt aX, TInt aY, TInt aW, TInt aH, |
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TUint16* aDst, TInt aDstStride, TInt aDstCols, TInt aDstRows ); |
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void FilterL( CFbsBitmap* aSource, CFbsBitmap*& aFilteredSource, TInt aFilterPercent ); |
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void FIRFiltering( |
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TUint16* aDst, TUint aDstStridep, TUint aDstCols, TUint aDstRows ); |
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void FIRFiltering4( |
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TUint16* aDst, TUint aDstStridep, TUint aDstCols, TUint aDstRows ); |
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void FIRFiltering8( |
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TUint16* aDst, TUint aDstStridep, TUint aDstCols, TUint aDstRows ); |
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private: |
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// File server session |
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RFs& iFs; |
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// Decoder used to read image from file |
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CImageDecoder* iDecoder; |
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// Bitmap scaler |
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MIHLScaler* iScaler; |
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/** Size of the image in the file being decoded */ |
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TSize iOriginalSize; |
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CFbsBitmap* iImage; |
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TUint16* iAddress; |
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CFbsBitGc* iBitGc; |
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}; |
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#endif // GLXTNIMAGEUTILITY_H |