// Copyright (c) 2005-2009 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:

//

/**

 @file

 @internalTechnology 

*/

#ifndef MNGREADCODEC_H

#define MNGREADCODEC_H

#include "MngPlayerObserver.h"

class CMngPlayer;

class CMngFileReadStream;

/**

	Observer for codec, allows codec to notify a client about 

	particular codec event such as frame readiness, decode completion etc.

*/

class MMngCodecObserver

	{

public:

	enum TCodecEvent 

		{

		KDataParseCompleted,		// 0

		KFrameReady,				// 1

		KDecodeCompleted=0xFFFF,	// 0xFFFF

		};

public:

	virtual void OnCodecEvent(TCodecEvent aEventCode, TInt aErrorCode)=0;

	};

/**

	Implementation of read codec for MNG-LC format, re-uses 

	format "player" implementation of Image Display one

*/

class CMngReadCodec:	public CImageMaskProcessorReadCodec,

						protected MMngPlayerObserver

	{

public:

	static CMngReadCodec * NewL(CMngFileReadStream& aMngReadStream, MMngCodecObserver& aObserver, TBool aMngSubframesNoLoops);  //Subframes with No Loops

	~CMngReadCodec();

	void Restart();

	void DecodeL();

	void StopDecode();

	inline TUint ImageFeatures() const;

// from the CImageReadCodec

	virtual void InitFrameL(TFrameInfo& aFrameInfo, CFrameImageData& aFrameImageData, TBool aDisableErrorDiffusion, CFbsBitmap& aDestination, CFbsBitmap* aDestinationMask);

	virtual TFrameState ProcessFrameL(TBufPtr8& aSrc);

	virtual void InitFrameHeader(TFrameInfo& aFrameSettings, CFrameImageData& /* aFrameImageData */);

	virtual TInt ReducedSize(const TSize& aOriginalSize, TInt aReductionFactor, TSize& aReducedSize) const;

protected:

	inline CMngReadCodec(MMngCodecObserver& aObserver, TBool aMngSubframesNoLoops);   //Subframes with No Loops

	void ConstructL(CMngFileReadStream& aMngReadStream);

	TInt GetBitmaps();

	void SendFrameUpdate(TInt aError);

	void CreatePlayerL();

// from the MMngPlayerObserver // 

	virtual void OnDecodeEvent(TUint aEventFlags, TInt aErrorCode);

private:

	TBool iMngSubframesNoLoops;   //Subframes with No Loops

	MMngCodecObserver&	iObserver;

	TFrameInfo*			iFrameInfo;		// not owned

	CFbsBitmap*			iCurrentFrame;	// not owned

	CFbsBitmap*			iCurrentMask;	// not owned

	CMngPlayer*			iMngPlayer;

	CMngFileReadStream* iMngReadStream;

	TTimeIntervalMicroSeconds32 iFrameDelay;

	TUint						iFrameStatus;

	TInt						iFrameNumber;

	TUint						iImageFeatures;

	TRect         				iFrameRect;

	};

inline 

CMngReadCodec::CMngReadCodec(MMngCodecObserver& aObserver, TBool aMngSubframesNoLoops):iMngSubframesNoLoops(aMngSubframesNoLoops),  //Subframes with No Loops

																			  iObserver(aObserver)  //Subframes with No Loops

	{

	}

inline 

TUint CMngReadCodec::ImageFeatures() const

	{

	return iImageFeatures;

	}

#endif // ndef MNGREADCODEC_H