--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/e32image/deflate/deflate.h	Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,80 @@
+/*
+* Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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: 
+* e32tools\petran\Szip\deflate.h
+*
+*/
+
+
+#ifndef __DECODE_H__
+#define __DECODE_H__
+
+#include "huffman.h"
+#include <e32base.h>
+
+// deflation constants
+const TInt KDeflateLengthMag=8;
+const TInt KDeflateDistanceMag=12;
+//
+const TInt KDeflateMinLength=3;
+const TInt KDeflateMaxLength=KDeflateMinLength-1 + (1<<KDeflateLengthMag);
+const TInt KDeflateMaxDistance=(1<<KDeflateDistanceMag);
+const TInt KDeflateDistCodeBase=0x200;
+// hashing
+const TUint KDeflateHashMultiplier=0xAC4B9B19u;
+const TInt KDeflateHashShift=24;
+
+class TEncoding
+	{
+public:
+	enum {ELiterals=256,ELengths=(KDeflateLengthMag-1)*4,ESpecials=1,EDistances=(KDeflateDistanceMag-1)*4};
+	enum {ELitLens=ELiterals+ELengths+ESpecials};
+	enum {EEos=ELiterals+ELengths};
+public:
+	TUint32 iLitLen[ELitLens];
+	TUint32 iDistance[EDistances];
+	};
+
+const TInt KDeflationCodes=TEncoding::ELitLens+TEncoding::EDistances;
+
+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
+	};
+
+void DeflateL(const TUint8* aBuf, TInt aLength, TBitOutput& aOutput);
+
+#endif
+