e32tools/elf2e32/source/inflate.h
author lorewang
Wed, 01 Dec 2010 16:05:36 +0800
changeset 715 e0739b8406dd
parent 0 044383f39525
permissions -rw-r--r--
Specify extenal tool with path
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
0
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     1
// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     2
// All rights reserved.
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     3
// This component and the accompanying materials are made available
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     4
// under the terms of "Eclipse Public License v1.0"
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     5
// which accompanies this distribution, and is available
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     6
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     7
//
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     8
// Initial Contributors:
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     9
// Nokia Corporation - initial contribution.
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    10
//
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    11
// Contributors:
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    12
//
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    13
// Description:
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    14
// Class for inflater
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    15
// @internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    16
// @released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    17
// 
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    18
//
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    19
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    20
#ifndef __INFLATE_H__
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    21
#define __INFLATE_H__
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    22
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    23
#include "e32defwrap.h"
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    24
#include "huffman.h"
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    25
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    26
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    27
const TInt KDeflateMinLength=3;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    28
const TInt KDeflateMaxDistance=(1<<KDeflateDistanceMag);
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    29
const TInt KDeflateDistCodeBase=0x200;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    30
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    31
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    32
Class for inflater
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    33
@internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    34
@released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    35
*/
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    36
class CInflater
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    37
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    38
	public:
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    39
		enum {EBufSize = 0x800, ESafetyZone=8};
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    40
	public:
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    41
		static CInflater* NewLC(TBitInput& aInput);
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    42
		~CInflater();
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    43
		TInt ReadL(TUint8* aBuffer,TInt aLength);
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    44
		TInt SkipL(TInt aLength);
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    45
	private:
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    46
		CInflater(TBitInput& aInput);
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    47
		void ConstructL();
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    48
		void InitL();
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    49
		TInt InflateL();
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    50
	private:
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    51
		TBitInput* iBits;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    52
		const TUint8* iRptr;			// partial segment
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    53
		TInt iLen;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    54
		const TUint8* iAvail;			// available data
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    55
		const TUint8* iLimit;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    56
		TEncoding* iEncoding;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    57
		TUint8* iOut;					// circular buffer for distance matches
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    58
		TUint8 iHuff[EBufSize+ESafetyZone];	// huffman data
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    59
};
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    60
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    61
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    62
#endif
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    63