--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imageeditorengine/JpegRotator/inc/CJpRotate.h	Fri Jan 29 13:53:17 2010 +0200
@@ -0,0 +1,179 @@
+/*
+* Copyright (c) 2010 Ixonos Plc.
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the "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:
+* Ixonos Plc
+*
+* Description:  
+*
+*/
+
+
+//
+// Jpeg decoder class
+
+
+#ifndef __CJPROTATE_H__
+#define __CJPROTATE_H__
+
+#include <e32base.h>
+//#include <TBitmapHandle.h>
+#include <f32file.h>
+
+class THuffman;
+
+
+class TJpegData
+	{
+	public:
+		TSize iSize;
+		TSize iBlockSize;
+		TSize iSizeInBlocks;
+	};
+
+
+
+class TJpegBasicBlock
+	{
+	public:
+		TUint32 iOffset;
+		TUint32 iBuf;
+		TUint8 iBufBits;
+		TInt16 iDc;
+	};
+	
+	
+	
+/// Jpeg component information struct
+/// one for each color component
+class TComponent
+	{
+	public:
+		char iType;
+		char iXFactor;
+		char iYFactor;
+		char iQuantTable;
+	};
+
+
+/// save huffman
+class TSHuffman
+	{
+	public:
+		TInt8 iLength[ 256 ];
+		TInt8 iCode[ 256 ];
+	};
+
+
+class MJpRotateCallBack;
+
+
+
+
+/// Main Jpeg decode class
+class CJpRotate
+	: public CBase
+	{
+	public:
+		static CJpRotate* NewL( RFs& aFs, RFile* aSaveFile, TInt aSaveBufSize );
+		static CJpRotate* NewLC( RFs& aFs, RFile* aSaveFile, TInt aSaveBufSize );
+		~CJpRotate();
+		
+	private:
+		CJpRotate( RFs& aFs, RFile* aSaveFile, TInt aSaveBufSize );
+		void ConstructL();
+
+	public:
+		
+		void SetCallBack( MJpRotateCallBack* aCallBack );
+		void RotateL( const TFileName& aFile, TBool aRotate, TBool aFlip, TBool aMirror );
+		void RotateL( const TPtrC8& aData, TPtrC8& aTarget, TBool aRotate, TBool aFlip, TBool aMirror );
+		void RotateL( const TPtrC8& aData, TBool aRotate, TBool aFlip, TBool aMirror );
+		const TJpegData& Info();
+		TPtrC8 ExifData();
+		void Cancel();
+
+	private:
+		void BufFwd( TInt aBits );
+		TInt BufBits( TInt aBits );
+		TInt Buf16();
+		void BufLoad8();
+		void DecodeBlockL( TInt aDc );
+		void DecodeBlock2L();
+
+		void WriteHuffmanL( TInt aValue );
+		void WriteBits( TUint32 aValue, TInt aNumBits );
+		void CreateSaveHuffmanL( TSHuffman* aHuffman, const TUint8* aBits, const TUint8* aVal );
+		void ConvertQuants( TUint8* aSrc, TUint8* aTgt );
+		void WriteSaveBuffer( const TUint8* aSrc, TInt aBytes );
+		void WriteSaveBuffer( TUint8 aValue );
+		void WriteSaveBuffer( TUint16 aValue );
+
+		void SaveBlocks();
+
+		void FlushSaveBuf();
+		
+	private:
+
+		TUint8* iBuffer;			// contains whole jpeg file now
+		TInt iBufPos;
+
+		TUint32 iBuf;				// Huffman bit buffer
+		TInt iBufBits;				// number of bits in bitbuffer
+
+		THuffman* iHuffman[ 4 ];	// huffman lookup tables
+		TInt iCurrentHuffman;
+
+		TUint8* iQt[ 4 ];			// Quantization tables
+		TUint8* iCurrentQt;
+
+		TInt iDct[ 64 ];			// DCT coefficients
+
+		TBool iRst;					// RST flag, might occur on some jpegs
+									// now only supports RST after line of blocks
+
+        TBool iCancelled;
+
+		bool iEOF;
+
+		TJpegData iData;
+		
+		TComponent iComponent[ 4 ];
+		TInt iNumComponents;
+
+		TUint8* iExifData;
+		TInt iExifDataLength;
+
+		TSHuffman* iSaveHuffman[ 4 ];
+		TSHuffman* iCurrentSaveHuffman;
+
+		TUint8* iSaveBuf;
+		TInt iSaveBufPos;
+		TInt iSaveBufBitPos;
+		TUint8 iSaveByte;
+
+		bool iRotate;
+		bool iFlip;
+		bool iMirror;
+
+		RArray< TJpegBasicBlock >iBasicBlock;
+
+		RFs& iFs;
+		RFile& iSaveFile;
+		TInt iSaveBufSize;
+
+		MJpRotateCallBack* iCallBack;
+
+		bool iOwnBuffer;
+		
+	};
+
+#endif