pgmio.h

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/*
 * Author: Steven Ludtke, 04/10/2003 (sludtke@bcm.edu)
 * Copyright (c) 2000-2006 Baylor College of Medicine
 * 
 * This software is issued under a joint BSD/GNU license. You may use the
 * source code in this file under either license. However, note that the
 * complete EMAN2 and SPARX software packages have some GPL dependencies,
 * so you are responsible for compliance with the licenses of these packages
 * if you opt to use BSD licensing. The warranty disclaimer below holds
 * in either instance.
 * 
 * This complete copyright notice must be included in any revised version of the
 * source code. Additional authorship citations may be added, but existing
 * author citations must be preserved.
 * 
 * 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.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 * 
 * */
 
#ifndef eman__pgmio_h__
#define eman__pgmio_h__ 1
 
#include "imageio.h"
 
namespace EMAN
{
        class PgmIO : public ImageIO
        {
          public:
                explicit PgmIO(const string & fname, IOMode rw_mode = READ_ONLY);
                ~PgmIO();
 
                DEFINE_IMAGEIO_FUNC;
                static bool is_valid(const void *first_block);
 
          private:
                static const char *MAGIC_ASCII;
                static const char *MAGIC_BINARY;
 
                enum FileType
                {
                        PGM_ASCII,
                        PGM_BINARY,
                        PGM_UNKNOWN_FILE
                };
 
          private:
                bool is_big_endian;
 
                int nx;
                int ny;
                int maxval;
                int minval;
 
                off_t file_offset;
                
                float rendermin;
                float rendermax;
                int renderbits;
        };
}
 
#endif  //eman__pgmio_h__