--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pppcompressionplugins/predictorcompression/INC/PREDCOMP.H	Tue Jan 26 15:23:49 2010 +0200
@@ -0,0 +1,128 @@
+/**
+* Copyright (c) 2003-2009 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 PREDCOMP.H 
+ @internalComponent
+*/
+ 
+#ifndef __PREDCOMP_H__
+#define __PREDCOMP_H__
+
+#include <networking/pppccp.h>
+#include "PREDLOG.H"
+
+NONSHARABLE_CLASS(CPredCompFactory) : public CPppCompFactory
+/**	
+Factory base for creating a concrete instance of a CSSLBase
+
+@internalComponent
+*/
+	{
+public:
+	CPredCompFactory();
+	void InstallL();
+	virtual CPppCompressor* NewPppCompressorL(CPppCcp* aCcp,TInt aMaxFrameLength,const TUint8* aMode = NULL);
+	virtual CPppDeCompressor* NewPppDeCompressorL(CPppCcp* aCcp, TInt aMaxFrameLength,const TUint8* aMode = NULL);
+	};
+
+class TRFC1978Table
+/**
+Main RFC 1978 class that contains the guess table and the associated
+RFC compress and decompress functions.
+
+@internalComponent
+*/
+	{
+protected:
+	void CompressRFC1978(const TDesC8& aSrc,TDes8* aDest);
+	void DecompressRFC1978(const TDesC8& aSrc,TDes8& aDest);
+	void Reset(){iGuessTable.SetMax();iGuessTable.FillZ();iHash = 0;}
+private:
+	TBuf8<65536> iGuessTable;
+	TUint16      iHash;
+	inline void Hash(TUint16 aSrc);
+	};
+	
+inline void TRFC1978Table::Hash(TUint16 aSrc)
+	{
+	iHash = (TUint16)((iHash << 4) ^aSrc);
+	}
+
+NONSHARABLE_CLASS(CPredCompressor) : public CPppCompressor , public TRFC1978Table	
+/**
+Compressor class contains main Compressor virtual plus support methods
+Predictor-1 PPP compressor (RFC 1978)
+@internalComponent
+*/
+	{
+public:
+	TPppCompressReturnValue Compress(RMBufChain& aPacket, TUint16 aPppId);
+	TBool	ResetCompressor(TInt aLength, RMBufChain& aPacket);
+	~CPredCompressor();
+	CPredCompressor();
+	void	ConstructL(CPredCompFactory* aFactory, CPppCcp* aCcp, TInt aMaxFrameLength);
+
+private:
+	TUint CopyFrameIntoFlatBuf(TPtr8& aDest,RMBufChain& aPacketQ, TUint16 aPppId);
+
+private:
+	HBufC8*			iCompressedBuffer;
+	HBufC8*			iFrameBuffer;
+	CPppCcp*		iCcp;
+	};
+
+NONSHARABLE_CLASS(CPredDeCompressor) : public CPppDeCompressor , public TRFC1978Table
+/**
+Predictor-1 PPP decompressor (RFC 1978)
+@internalComponent
+*/
+	{
+public:
+	TBool	Decompress(RMBufQ& aBufferQ);
+	void	ResetDecompressor(TInt aLength, RMBufChain& aPacket);
+	~CPredDeCompressor();
+	CPredDeCompressor();
+	void	ConstructL(CPredCompFactory* aFactory, CPppCcp* aCcp, TInt aMaxFrameLength);
+
+private:
+	TUint CopyFrameIntoFlatBuf(const TPtr8& aPtr,RMBufQ& aBufferQ);
+	TUint FlattenBuf(TPtr8& aPtr, RMBufQ& aBufferQ);
+	TBool CopyNewFrameToChain(TDesC8& aSrc,RMBufQ& aBufferQ);
+private:
+	TBool			iReConfiguring;
+	HBufC8*			iCompressedBuffer;
+	HBufC8*			iDecompressBuffer;
+	CPppCcp*		iCcp;
+	};
+
+extern "C"
+    {
+/**
+Generates and returns a CPppCompFactory object.
+This is the polymorphic DLL entry point.
+
+@return New CPppCompFactory object
+@internalTechnology
+*/
+	EXPORT_C CPppCompFactory* NewPppCompFactoryL(void);
+	}
+
+
+#endif