// Copyright (c) 2008-2009 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:

// base\omap_hrp\h4_bootloader\inflate2.h

// 

//

#include <f32file.h>

#ifndef __INFLATE2_H__ 

#define __INFLATE2_H__

#define __CONFIGURABLE_F32_LOADER_INFLATE_WINDOW_SIZE__ 0x8000

// inflate

const TInt KInflateWindowSize=__CONFIGURABLE_F32_LOADER_INFLATE_WINDOW_SIZE__ ;

typedef struct

	{

	TUint				iPhysicalSector;

	TUint				iSemiPhysicalSector;	

	} TNandReadInfo;

//for asm mem copy

//#define __JUMP(cc,r) asm("mov"#cc " pc, "#r )

//#define __POPRET(rlist) asm("ldmfd sp!, {"##rlist##"pc} ")

void memcpy1(TAny*, const TAny*, TUint);

void memset1(void *, int, unsigned);

TInt memcmp1(const TUint8* aTrg, const TUint8* aSrc, TInt aLength);

void leds(TUint32); 

extern "C" void memdump(TUint32* aAddr, TUint32* aEnd);

#ifdef __cplusplus

extern "C" {

#endif

extern void countout(void);

extern void charout(TUint8 aChar);

extern void WriteW(TUint32);

extern void WriteB(TUint8);

extern void mmuoff(void);

#ifdef __cplusplus

}

#endif

/** Bit input stream. Good for reading bit streams for packed, compressed or huffman

	data algorithms.

*/

class TBitInput

	{

public:

	TBitInput();

	TBitInput(const TUint8* aPtr, TInt aLength, TInt aOffset=0);

	void Set(const TUint8* aPtr, TInt aLength, TInt aOffset=0);

//

	TUint ReadL();

	TUint ReadL(TInt aSize);

	TUint HuffmanL(const TUint32* aTree);

private:

	virtual void UnderflowL();

private:

    TInt iCount;

	TUint iBits;

	TInt iRemain;

	const TUint32* volatile iPtr;

	};

const TInt KHuffTerminate=0x0001;

const TUint32 KBranch1=sizeof(TUint32)<<16;

/** Huffman code toolkit.

	This class builds a huffman encoding from a frequency table and builds

	a decoding tree from a code-lengths table

	The encoding generated is based on the rule that given two symbols s1 and s2, with 

	code length l1 and l2, and huffman codes h1 and h2:

		if l1<l2 then h1<h2 when compared lexicographically

		if l1==l2 and s1<s2 then h1<h2 ditto

	This allows the encoding to be stored compactly as a table of code lengths

*/

class Huffman

	{

public:

	enum {KMaxCodeLength=27};

	enum {KMetaCodes=KMaxCodeLength+1};

	enum {KMaxCodes=0x8000};

public:

	static void Decoding(const TUint32 aHuffman[],TInt aNumCodes,TUint32 aDecodeTree[],TInt aSymbolBase=0);

	static TBool IsValid(const TUint32 aHuffman[],TInt aNumCodes);

//

	static void InternalizeL(TBitInput& aInput,TUint32 aHuffman[],TInt aNumCodes);

	};

// 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;

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 Inflater

	{

public:

	static TInt Inflate(TBitInput& aBits, TUint8* aBuffer, TInt aSize);

private:

	static TInt Init(TBitInput& aBits, TEncoding& aEncoding);

	static TInt DoInflate(TBitInput& aBits, TEncoding& aEncoding, TUint8* aBuffer, TInt aSize);

	};

class TFileInput : public TBitInput

	{

 	enum {KBufSize=KInflateWindowSize};

public:

	TFileInput(TInt aBlockLen, TInt aFileSize);

	void Init(void);

private:

	void UnderflowL();

private:

	TUint8* iReadBuf;

	TPtr8   iPtr;

	TUint8  iBuf1[KBufSize];

	TInt    iState;

	TInt    iBlockLen;

	TInt    iFileSize;

	TInt    iImageReadProgress;

	};

#endif