grloadsgi.h

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

    file                 : grloadsgi.h
    created              : Wed Jun 1 14:56:31 CET 2005
    copyright            : (C) 2005 by Bernhard Wymann
    version              : $Id$

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

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

/*
    Contains the header of the ssgSGIHeader class to allow me to overload,
    the source is the file ssgLoadSGI.cxx. This is a stupid solution, but
    the architecture of plib forces that... really.
*/

#ifndef _GRLOADSGI_H_
#define _GRLOADSGI_H_

/*
    The latter parts are derived from plib (plib.sf.net) and have this license:

    PLIB - A Suite of Portable Game Libraries
    Copyright (C) 1998,2002  Steve Baker

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

    For further information visit http://plib.sourceforge.net
*/

class ssgSGIHeader {
    public:
        unsigned short magic ;
        int            max ;
        int            min ;
        int            colormap ;
        char           type ;
        char           bpp ;
        unsigned int  *start ;
        int           *leng ;
        unsigned short dim ;
        unsigned short xsize ;
        unsigned short ysize ;
        unsigned short zsize ;
        int           tablen ;

        /* added by J. Nathan Matias */
        FILE          *image_fd;
        char          image_fname [ 512 ];
        int           isSwapped;
        unsigned char *rle_temp;
        bool          loadSGI_bool;
        ssgSGIHeader () ;
        ssgSGIHeader(const char *fname, ssgTextureInfo* info );
        ~ssgSGIHeader () ;

        bool openFile(const char *fname);
        void makeConsistant () ;
        void getRow   ( unsigned char *buf, int y, int z ) ;
        void getPlane ( unsigned char *buf, int z ) ;
        void getImage ( unsigned char *buf ) ;
        void readHeader () ;

    protected:
        void swab_short ( unsigned short *x );
        void swab_int ( unsigned int *x );
        void swab_int_array ( int *x, int leng );
        unsigned char readByte ();
        unsigned short readShort ();
        unsigned int readInt ();
};

#endif // _GRLOADSGI_H_