Application: gvSIG desktop

/********************************************************

** Copyright 2003 Earth Resource Mapping Ltd.

** This document contains proprietary source code of

** Earth Resource Mapping Ltd, and can only be used under

** one of the three licenses as described in the

** license.txt file supplied with this distribution.

** See separate license.txt file for license details

** and conditions.

**

** This software is covered by US patent #6,442,298,

** #6,102,897 and #6,633,688.  Rights to use these patents

** is included in the license agreements.

**

** FILE:     $Archive: /NCS/Source/include/NCSJPCPaletteNode.h $

** CREATED:  20/03/2003 3:27:34 PM

** AUTHOR:   Simon Cope

** PURPOSE:  CNCSJPCPaletteNode class header

** EDITS:    [xx] ddMmmyy NAME COMMENTS

 *******************************************************/

#ifndef NCSJPCPALETTENODE_H

#define NCSJPCPALETTENODE_H

#ifndef NCSJPCNODE_H

#include "NCSJPCNode.h"

#endif // NCSJPCNODE_H

#ifndef NCSJP2FILE_H

#include "NCSJP2File.h"

#endif // NCSJP2FILE_H

        /**

         * CNCSJPCPaletteNode class - Palette node.

         *

         * @author       Simon Cope

         * @version      $Revision$ $Author$ $Date$

         */

class NCSJPC_EXPORT_ALL CNCSJPCPaletteNode: public CNCSJPCNode {

public:

                /** Default constructor, initialises members */

        CNCSJPCPaletteNode();

                /** Virtual destructor */

        virtual ~CNCSJPCPaletteNode();

                /**

                 * Link a node as the unput to this node.

                 * @param                nCtx                Read context

                 * @param                nInputs                Number of inputs to this node == 1

                 * @param                pInput                First CNCSJPCNode to use as input to this node.

                 * @param                Header                CNCSJP2HeaderBox

                 * @param                iComponent        Output Component index

                 * @return      bool                true on success, else false on error.

                 */

        virtual bool Link(ContextID nCtx, UINT16 nInputs, CNCSJPCNode *pInput, class CNCSJP2File::CNCSJP2HeaderBox &Header, INT32 iComponent);

        /**

                 * Read a BufferType line from the input.

                 * @param                nCtx                Read context

                 * @param                pDst                Destination buffer.

                 * @param                iComponent        Output Component

                 * @return      bool                true on succes, else false.

                 */

        virtual bool ReadLine(ContextID nCtx, CNCSJPCBuffer *pDst, UINT16 iComponent);

protected:

        static CNCSJPCNodeTracker        sm_Tracker;

        class NCSJPC_EXPORT_ALL Context: public CNCSJPCNode::Context {

        public:

                NCSEcwCellType m_eType;

                void        *m_pEntries;

                Context();

                virtual ~Context();

        };

                /**

                 * Get the context for the given ContextID

                 * @param                nCtx                ContextID to retrive context

                 * @param                bAutoConstruct Autoconstruct a new context for this ContextID if one doesn't exist

                 * @return                Context*        Context for given ID.

                 */

        virtual CNCSJPCNode::Context *GetContext(ContextID nCtx, bool bAutoConstruct = true);

};

#endif // !NCSJPCPALETTENODE_H