uiservicetab/vimpstutils/inc/cvimpstengineimagehandler.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 10:12:18 +0200
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/*
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* Copyright (c) 2008 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: Image handler for VImpstengine handler
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*
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*/
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#ifndef __CVIMPSTENGINEIMAGEHANDLER_H
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#define __CVIMPSTENGINEIMAGEHANDLER_H
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//  INCLUDES
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#include <e32base.h>
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#include "mvimpstimageprocessobserver.h"
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#include <mdaimageconverter.h>
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// FORWARD DECLARATIONS           
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class CVimpstImageProcessor;
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class CFbsBitmap;
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// CLASS DECLARATION
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/**
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 * This Class is wrapper over the CVimpstImageProcessor implements the processing of image
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 * @lib vimpstengine.lib
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 * @since S60 5.0 
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 */
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NONSHARABLE_CLASS( CVIMPSTEngineImageHandler ) : public CBase,							   
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                                                 public MCAImageProcessObserver,
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                                                 public MMdaImageUtilObserver
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    {
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    public:  // Two-phased constructors and destructor
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        /**
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         * Two-phased constructor.
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         */
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        IMPORT_C static CVIMPSTEngineImageHandler* NewL();
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        /**
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         * Two-phased constructor.
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         */										
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        IMPORT_C static CVIMPSTEngineImageHandler* NewLC();
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        /**
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         * By default Symbian 2nd phase constructor is private.
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         */
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        void ConstructL();
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        /**
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         * C++ Destructor.
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         */
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        virtual ~CVIMPSTEngineImageHandler();
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    private:
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        /**
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         * default constructor
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         */
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        CVIMPSTEngineImageHandler();
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public: //from MMdaImageUtilObserver
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    /**
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     * Defines required client behaviour when a create operation has completed.
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     *
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     * @param aError:A value identifying the status of the create operation. KErrNone or one of the system wide error codes.
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     * 
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     */
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    void MiuoCreateComplete(TInt aError);
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    /**
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     * Defines required client behaviour when an open operation has completed.
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     *
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     * @param aError: A value identifying the status of the open operation. KErrNone or one of the system wide error codes
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     */
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    void MiuoOpenComplete(TInt aError);
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    /**
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     * Defines required client behaviour when a conversion, image rotation or image re-scaling operation has completed.
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     *
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     * @param aError: A value identifying the status of the operation. KErrNone or one of the system wide error codes.
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     */
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    void MiuoConvertComplete(TInt aError);
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    public: 
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        /**
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         * process the image from file name
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         * @return processed image content	     
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         */
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        IMPORT_C HBufC8* ProcessImageFromFileL(const TDesC& aFilename ,
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                const  TDesC8& aMimetype);
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        /**
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         * process the image from image data
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         * @return processed image content      
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         */
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        IMPORT_C HBufC8* ProcessImageFromDataL( const TDesC8& aImageData , const TDesC8& aMimeType);
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        /**
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         * process the image from image bitmap
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         * @return processed image content      
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         */
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        IMPORT_C HBufC8* ProcessFromBitmapL( CFbsBitmap& aBitMap );
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			 /**
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        * Get Bitmap
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        * @return bitmap
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        */   
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        IMPORT_C CFbsBitmap& Bitmap();
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    public:  // from MCAImageProcessObserver
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        /**
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         * See MCAImageProcessObserver	     
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         */
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        void HandleProcessingCompleteL( TInt aStatus );	
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    private:   	
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        //Result code from waited request
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        TInt    iReqResult;
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        // Owns content
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        HBufC8* iContent;
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        // Owns imageporcessor
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        CVimpstImageProcessor* iProcessor;
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        // own active sheduler 
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        CActiveSchedulerWait    iWait;
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        /*
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         * bitmap to descriptor pointer
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         * Owns
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         */
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        CMdaImageBitmapToDescUtility* iToDesc;
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        /*
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         * image format
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         */
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        TMdaJfifClipFormat iFormat;
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        /*
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         * stores converted descriptor from bitmap
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         * Doesn't Own: ownership is transferred to caller
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         */
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        HBufC8* iBuf;
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        /*
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         * stores error code
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         */
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        TInt iError;
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    };
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#endif      //__CVIMPSTENGINEIMAGEHANDLER_H
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// End of File