/*

* ==============================================================================

*    Copyright (c) 2006, Nokia Corporation

*    All rights reserved.

*

*   Redistribution and use in source and binary forms, with or without

*   modification, are permitted provided that the following conditions

*   are met:

*

*      * Redistributions of source code must retain the above copyright

*        notice, this list of conditions and the following disclaimer.

*      * Redistributions in binary form must reproduce the above copyright

*        notice, this list of conditions and the following disclaimer in

*        the documentation and/or other materials provided with the

*        distribution.

*      * Neither the name of the Nokia Corporation nor the names of its

*        contributors may be used to endorse or promote products derived

*        from this software without specific prior written permission.

*

*   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

*   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

*   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

*   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

*   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

*   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

*   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

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*   USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH

*   DAMAGE.

*

* ==============================================================================

*/

#ifndef ANIMATIONDECODER_H

#define ANIMATIONDECODER_H

// INCLUDES

#include "AnimationDecoderWrapped.h"

namespace WebCore {

	class SharedBuffer;

}

// CLASS DECLARATION

/**

*  CAnimationDecoder

*

*  Proxy for implementation of file based image class.

*  @lib IHL.lib

*  @since 3.0

*  

*  This class is a proxy for CAnimationDecoderWrapped

*  

*  We needed to wrap animation decoding in a proxy because sometimes the cache gets cleared when decoding

*  is in progress; when that happens the animation gets deleted while it's in the middle (which causes all sorts

*  of crashes and memory stomping).  Now, the cache can delete the proxy while the animation is decoding; the proxy

*  will pass on the delete request to the decoder which will cleanup (delete itself) when it's safe to do so.

*/

class CAnimationDecoder

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CAnimationDecoder* NewL(WebCore::ImageObserver* aObs);

        /*

        * Virtual destructor.

        */

        virtual ~CAnimationDecoder();

  public:

        /*

        * From MIHLFileImage, see base class header.

        */

        void OpenL( WebCore::SharedBuffer* aData, TDesC* aMIMEType, TBool aIsComplete );

        /*

        * From MIHLFileImage, see base class header.

        */

        TSize Size() const;

        /*

        * From MIHLFileImage, see base class header.

        */

        TInt AnimationFrameCount() const;

        /*

        * From MIHLFileImage, see base class header.

        */

        TInt LoadFrame( TInt aFrameIndex );

        //funtions related to Loop count of animation image.

        TInt16 getLoopCount();

        CMaskedBitmap* Destination();

        TBool isSizeAvailable() const;

        TBool decodeInProgress() const;

  private: // Private constructors

        CAnimationDecoder(CAnimationDecoderWrapped *aDecoder);

        void ConstructL( );

  private: // Data

      CAnimationDecoderWrapped *iWrapped;

    };

#endif   // CAnimationDecoder_H

// End of File