/*

* Copyright (c) 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:   ?Description

*

*/

#ifndef GLXIMAGEDECODER_H

#define GLXIMAGEDECODER_H

#include <QPixmap>

#include <f32file.h> 

#include "glximagedecoderwrapper.h"

class GlxImageDecoderWrapper;

class CImageDecoder;

class CFbsBitmap;

const TReal KTargetSize = 1000000;

//if any image is converted to Pixmap with an dimension > 2048 

//the conversion will fail

const TInt KMaxDimensionLimit = 2000;

class CGlxImageDecoder : public CActive

{

public:

	static CGlxImageDecoder* NewL(GlxImageDecoderWrapper* decoderWrapper);

	~CGlxImageDecoder();

    QSizeF DecodeImageL(QString aSourceFileName);

	QPixmap GetPixmap();

	void ResetDecoder();

public:    

    /**

     * Standard Active object functions

     * */

    virtual void RunL();

    virtual void DoCancel();

private:

    /*

     * Constructor

     * */

    CGlxImageDecoder();

	/*

     *Second-phase constuction 

     * */

    void ConstructL(GlxImageDecoderWrapper* decoderWrapper);

    /*

     * Checks if the mimetype needs recalculations

     * @returnType false if jpeg

     * true otheriwise 

     */

    TBool DoesMimeTypeNeedsRecalculateL(QString aSourceFileName);

    /*

     * Does the recalculation and returns back the correct size

     * @returntype Size of the decoded bitmap

     */

    TSize ReCalculateSizeL(QString aSourceFileName, TSize aDestSize);

private:

	GlxImageDecoderWrapper* iDecoderWrapper;

	/*Specifies the Decoder */

    CImageDecoder*          iImageDecoder; // decoder from ICL API

	/*Contains the Bitmap generated*/

    CFbsBitmap* iBitmap;

	/*Contains the bitmap in QT format8*/

	QPixmap iDecodedPixmap;

	/*A handle to a file server session.*/ 

    RFs iFs;

};

#endif //GLXIMAGEDECODER_H