// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// 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:

// Class for inflater

// @internalComponent

// @released

// 

//

#ifndef __INFLATE_H__

#define __INFLATE_H__

#include "e32defwrap.h"

#include "huffman.h"

const TInt KDeflateMinLength=3;

const TInt KDeflateMaxDistance=(1<<KDeflateDistanceMag);

const TInt KDeflateDistCodeBase=0x200;

/**

Class for inflater

@internalComponent

@released

*/

class CInflater

{

	public:

		enum {EBufSize = 0x800, ESafetyZone=8};

	public:

		static CInflater* NewLC(TBitInput& aInput);

		~CInflater();

		TInt ReadL(TUint8* aBuffer,TInt aLength);

		TInt SkipL(TInt aLength);

	private:

		CInflater(TBitInput& aInput);

		void ConstructL();

		void InitL();

		TInt InflateL();

	private:

		TBitInput* iBits;

		const TUint8* iRptr;			// partial segment

		TInt iLen;

		const TUint8* iAvail;			// available data

		const TUint8* iLimit;

		TEncoding* iEncoding;

		TUint8* iOut;					// circular buffer for distance matches

		TUint8 iHuff[EBufSize+ESafetyZone];	// huffman data

};

#endif