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gocr_module.h

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/*
GOCR Copyright (C) 2000  Joerg Schulenburg Joerg.Schulenburg@physik.uni-magdeburg.de 
GOCR API Copyright (C) 2001 Bruno Barberi Gnecco <brunobg@sourceforge.net>

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 _GOCR_MODULE_H 
#define _GOCR_MODULE_H 

/* header for modules. */

#include <stdio.h>
#include "hash.h"
#include "list.h"
#include "unicode.h"
#include "gocr_char.h"

/*
 * Image
 */
#define GOCR_BLACK                      0

#define GOCR_WHITE                      1

enum gocrimagetype {
        BLACK_AND_WHITE, GRAY
};
typedef enum gocrimagetype gocrImageType;

struct gocrpixel {
        unsigned char   value : 1;      
        unsigned char   mark1 : 1;      
        unsigned char   mark2 : 1;      
        unsigned char   mark3 : 1;      
        unsigned char   isblock : 1;    
        unsigned char   ischar : 1;     
        unsigned char   padding : 2;    
};
typedef struct gocrpixel gocrPixel;

struct gocrimage {
        char            *filename;      
        int             x, y;           
        gocrImageType   type;           
        gocrPixel       **data;         
        List            blocklist;      
};
typedef struct gocrimage gocrImage;

extern gocrImage        *currentimage;

extern void gocr_imageFree ( gocrImage *image );
/*
 * block definition
 */
typedef int gocrblockType;

struct gocrblock {
        gocrblockType   t;

        int             x0, y0, x1, y1;         /* boundaries in main image */
        gocrImage       image;
        List            boxlist;
};
typedef struct gocrblock gocrBlock;

struct gocrline {
        int             x0, x1;         /* x-boundaries */
        int             m0, m1, m2, m3; /* y-boundaries */
};
typedef struct gocrline gocrLine;

struct gocrtextblock {
        gocrBlock       b;                      /* parent; must be first field */
        List            linelist;
};
typedef struct gocrtextblock gocrTextBlock;

struct gocrpictureblock {
        gocrBlock       b;                      /* parent; must be first field */
        char            *name;
};
typedef struct gocrpictureblock gocrPictureBlock;

struct gocrmathblock {
        gocrBlock       b;                      /* parent; must be first field */

        /* to be done */
};
typedef struct gocrmathblock gocrMathBlock;

extern gocrblockType gocr_blockTypeRegister ( char *name );
extern gocrblockType gocr_blockTypeGetByName ( char *name );
extern char *gocr_blockTypeGetNameByType ( gocrblockType t );

extern int gocr_blockAdd ( gocrBlock *b );
/*
 * Debugging utilities
 */
extern int gocr_printArea ( gocrImage *image, int x0, int y0, int x1, int y1 );
extern int gocr_printBlock ( gocrBlock *b  );
extern int gocr_printBox ( gocrBox *b );
extern int gocr_printBox2 ( gocrBox *b1, gocrBox *b2 );
#endif /* _GOCR_MODULE_H */

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