/*

* Copyright (c) 2005 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:

*

*/

#ifndef CMIDIMAGEDECODER_H

#define CMIDIMAGEDECODER_H

#include <e32base.h>

#include "lcdgr.h"

#include <imageconversion.h>

#include "CMIDBitmapImage.h"

/**

 * Peered, probably singleton facade to image operations.

 *

 * Methods invoked by server on behalf of java threads:

 *  DecodeL

 *

 * expect java thread to block in waitForResult on peer's

 * condition variable.

 */

NONSHARABLE_CLASS(CMIDImageDecoder)

        : public  CActive

        , public  MMIDImageDecoder

{

public:

    CMIDImageDecoder(RFs& aFileServer, TDisplayMode aDisplayMode);

    void ConstructL();

    ~CMIDImageDecoder();

    //

    // From MMIDImageDecoder

    //

    void AppendL(const TDesC8& aBuffer);

    void DecodeL(MMIDImageObserver* aObserver);

    void Dispose();

    MMIDBitmapImage* BitmapImage() const;

private:

    void Complete(TInt aResult);

    void ConvertL();

    void CreateImageL();

private:

    void RunL();

    TInt RunError(TInt);

    void DoCancel();

private:

    enum TState

    {

        EStart,

        EOpenPending,

        EOpenComplete,

        EConvertPending,

        EComplete,

        ECancelled,

        EError=-1

    };

private:

    CBufferedImageDecoder* iDecoder;

    TFrameInfo iFrameInfo;

    TState iState;

    CMIDBitmapImage* iBitmapImage;

    MMIDImageObserver* iCallback;

    RFs& iRFsSession;

    TDisplayMode                iDisplayMode;       // display mode from CMIDGraphicsFactory

};

#endif // CMIDIMAGEDECODER_H