text: /*--------------------------------------------------------------
      PBM (raw) file I/O class Header Include File   Rev.970218
  		Written  by H.Goto , Jan. 1995
  		Modified by H.Goto , July 1996
  		Modified by H.Goto , Feb. 1997
  --------------------------------------------------------------*/
  
  /*--------------------------------------------------------------------
    Copyright (C) 1995-1997  Hideaki Goto
  
          All Rights Reserved
  
    Permission to use, copy, modify, and distribute this software and
    its documentation for any purpose is hereby granted without fee,
    provided that (i) the above copyright notice and this permission
    notice appear in all copies and in supporting documentation, (ii)
    the name of the author, Hideaki Goto, may not be used in any
    advertising or otherwise to promote the sale, use or other
    dealings in this software without prior written authorization
    from the author, (iii) this software may not be used for
    commercial products without prior written permission from the
    author, and (iv) the notice of the modification is specified in
    case of that the modified copies of this software are distributed.
  
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.
    THE AUTHOR WILL NOT BE RESPONSIBLE FOR ANY DAMAGE CAUSED BY THIS
    SOFTWARE.
  --------------------------------------------------------------------*/
  
  
  #ifndef pbmIO_h
  #define pbmIO_h
  
  #include	<utypes.h>
  
  
  /*------------------------------------------------------
  	PBM (raw) file I/O Class
  ------------------------------------------------------*/
  
  class PBMFILE {
      private:
  	FILE		*fp;
  	char		*wfname;
  	int		mode;
  	int		cline;
  	int		width,height,pixel;
  	int		flbytes,linebytes;
  	uchar		*linebuffer;
   	int		filetype;	/* = 0 : 1bit/pixel     */
  					/*   1 : 8bit grayscale */
  					/*   2 : 24bit color */
  	uchar		fgcol,bgcol;
  	int		checksize();
  	int		write_header();
  	int		read_header();
  	int		seekto(int line);
      public:
  	int		open(char *path,char *type);
  	int		close(void);
  
  	int		setpal_fb(uchar fg,uchar bg);
  	int		readline(int line,void *buf);
  	int		readline_gray(int line,void *buf);
  	int		getwidth(void)  {  return width; }
  	int		getheight(void) {  return height; }
  	int		getfiletype(void) {  return filetype; }
  
  	int		writeline(int line,void *buf);
  	int		writeline_bilevel(int line,void *buf,int threshold);
  	int		setsize(int width,int height,int pixel);
  
  			PBMFILE(void);
  	virtual		~PBMFILE(void);
  };
  
  
  #endif		//  pbmIO_h
  
  