--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imagingmodules/jp2kcodec/Inc/JP2KStreamReader.h	Thu Dec 17 09:22:31 2009 +0200
@@ -0,0 +1,206 @@
+/*
+* Copyright (c) 2003, 2004 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:  TJ2kStreamReader class is to implement the
+*                MJ2kPacketHeaderReader interface for reading the
+*                packet header and packet body from the stream
+*                buffer provided by ICL framework.
+*
+*/
+
+
+#ifndef __JP2KSTREAMREADER_H__
+#define __JP2KSTREAMREADER_H__
+
+//  INCLUDES
+#include <e32base.h>
+#include "JP2KMarker.h"
+
+// CONSTANTS
+
+// MACROS
+
+// DATA TYPES
+
+// FUNCTION PROTOTYPES
+
+// FORWARD DECLARATIONS
+
+// CLASS DECLARATION
+
+/**
+* TJ2kStreamReader class is to implement the
+* MJ2kPacketHeaderReader interface for reading the
+* packet header and packet body from the stream
+* buffer provided by ICL framework.
+*
+* JP2KCodec.dll
+* @since 2.6
+*/
+class TJ2kStreamReader : public MJ2kPacketHeaderReader
+    {
+    public:  // Constructors and destructor
+        
+    public: // New functions
+        
+        /**
+        * Update the codestream length read and offset of SOT marker
+        * @since 2.6
+        */
+        void  UpdateMainHeader();
+
+        /**
+        * Update the codestream length read and length of data consumed
+        * @since 2.6
+        */
+        void  UpdateTileHeader();
+
+        /**
+        * From MJ2kPacketHeaderReader
+        * Try to consume the EPH marker if there is one
+        * @since 2.6
+        * @return TUint8: true if end of buffer.
+        */
+        TUint8 ReadEPHMarker();
+
+        /**
+        * From MJ2kPacketHeaderReader
+        * Read a bit from the packet header stream
+        * @since 2.6
+        * @param aBit: get a bit from the packet header bitstream.
+        * @return TUint8: true if end of buffer.
+        */
+        TUint8 ReadBit( TUint8& aBit );
+
+        /**
+        * From MJ2kPacketHeaderReader
+        * Read some bits from the packet header stream
+        * @since 2.6
+        * @param aBit: get some bits from the packet header bitstream.
+        * @param aBitLen: how many bits to read.
+        * @return TUint8: true if end of buffer.
+        */
+        TUint8 ReadBits( TUint8& aBit, TUint8 aBitLen );
+
+        /**
+        * From MJ2kPacketHeaderReader
+        * Read some bits from the packet header stream
+        * @since 2.6
+        * @param aBit: get some bits from the packet header bitstream.
+        * @param aBitLen: how many bits to read.
+        * @return TUint8: true if end of buffer.
+        */
+        TUint8 ReadBits( TUint32& aBit, TUint8 aBitLen );
+
+        /**
+        * From MJ2kPacketHeaderReader
+        * Start reading from packet header stream
+        * @since 2.6
+        * @return TUint8: true if end of buffer.
+        */
+        TUint8 StartReadBit();
+
+        /**
+        * From MJ2kPacketHeaderReader
+        * Align the stream to the next byte boundary if necessary
+        * @since 2.6
+        */
+        void AlignReader();
+
+        /**
+        * Try to consume the SOP marker if there is one
+        * @since 2.6
+        * @return TUint8: true if end of buffer.
+        */
+        TUint8 ReadSOPMarker();
+
+        /**
+        * Try to consume the EPH marker after failure on previous try
+        * @since 2.6
+        * @return TUint8: true if end of buffer.
+        */
+        TUint8 TryReadEPHMarker();
+
+        /**
+        * Try to align to byte boundary after failure on previous try
+        * @since 2.6
+        * @return TUint8: true if end of buffer.
+        */
+        TUint8 TryReAlignReader();
+
+    public: // Functions from base classes
+       
+    protected:  // New functions       
+
+    protected:  // Functions from base classes
+
+    private:
+
+    public:     // Data
+
+        // Iterator pointed to current position in the buffer
+        const TUint8 *iPtr;            
+
+        // Iterator pointed to the start of buffer
+        TUint8 *iPtrStart;       
+
+        // Iterator pointed to the end of buffer
+        TUint8 *iPtrEnd;         
+
+        // Iterator pointed to the start of marker
+        TUint8 *iPtrStartMarker; 
+
+        // Data consumed during decoding
+        TUint32 iDataUsed;       
+
+        // Length of codestream left to be read
+        TUint32 iCSLength;       
+
+        // Offset position of first SOT
+        TUint32 iStartSOT;       
+
+        // Offset position of next tile to be processed
+        TUint32 iNewDataStart;   
+
+        // Length of data to skip
+        TUint32 iSkipLength;     
+
+        // Current data in 8 bits
+        TUint8 iData;           
+
+        // Current bit position
+        TUint8 iPos;            
+
+        // Bit position of next byte
+        TUint8 iNextPos;        
+
+        // To indicate byte alignment is required
+        TUint8 iAlign;          
+
+        // To indicate EPH marker should be tried
+        TUint8 iTryEPHMarker;   
+    
+    protected:  // Data
+
+    private:    // Data
+
+    public:     // Friend classes
+    
+    protected:  // Friend classes
+       
+    private:    // Friend classes
+
+    };
+
+#endif // __JP2KSTREAMREADER_H__
+