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gocr.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_API_H 
#define GOCR_API_H 
/* This is a draft of the API. */

/* 
 * Initialization/finalization
 */
extern int      gocr_init               ( int argc, char **argv );
extern void     gocr_finalize           ( void );
/* gocr options */
enum attributetype {
        VERBOSE,                
        BLOCK_OVERLAP,          
        NO_BLOCK,               
        ERROR_FILE,             
        PRINT,                  
        PRINT_IMAGE             
};
typedef enum attributetype gocrAttributeType;

extern int      gocr_setAttribute       ( gocrAttributeType t, void *value );
extern void *   gocr_getAttribute       ( gocrAttributeType t );
extern int      gocr_imageLoad          ( const char *filename );
extern void     gocr_imageClose         ( void );
/*
 * Module system.
 *  
 */
enum moduletype {
        grayImageFilter,        
        grayToBW,               
        bwImageFilter,          
        blockFinder,            
        charFinder,             
        charRecognizer,         
        contextCorrection,      
        outputFormatter,        
        allModules              
};
typedef enum moduletype gocr_moduleType;

extern int      gocr_moduleLoad         ( char *filename );
extern void     gocr_moduleClose        ( int id );
extern int      gocr_moduleSetAttribute ( int id, void *a, void *b );

extern int      gocr_functionInsertBefore       ( gocr_moduleType t, 
                                char *functionname, void *data, int id );
extern int      gocr_functionAppend     ( gocr_moduleType t,
                                char *functionname, void *data );

extern void *   gocr_functionDeleteById ( int id );

/*extern int    gocr_runModuleFunction  ( int id );
extern int      gocr_runModuleType      ( gocr_moduleType t ); */
extern int      gocr_runAllModules      ( void );
#ifdef PROTOTYPES

/* are these needed? they may only add clumsiness */
#define gocr_moduleFunction(funcname) \
                                int func (pix *p, void *data)
#define gocr_imageFilter(funcname) \
                                void func ( void *v )
#define gocr_blockFinder(funcname) \
                                ( void *v )
#define gocr_charFinder(funcname) \
                                ( gocrBlock *b, void *v )
#define gocr_charRecognizer(funcname) \
                                ( gocrImage *pix, gocrBox *b, void *v )
#define gocr_contextCorrection(funcname) \
                                ( gocrImage *pix, gocrBox *b, void *v )
#define gocr_outputFormatter(funcname) \
                                ( void *v );

#endif



#endif /* GOCR_API_H */

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