/usr/include/libhocr/ho_layout.h is in libhocr-dev 0.10.17-1.
This file is owned by root:root, with mode 0o644.
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* ho_layout.h
*
* Fri Aug 12 20:13:33 2005
* Copyright 2005-2007 Yaacov Zamir
* <kzamir@walla.co.il>
****************************************************************************/
/*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/** @file ho_layout.h
@brief libhocr C language header.
libhocr - LIBrary for Hebrew Optical Character Recognition
*/
#ifndef HO_LAYOUT_H
#define HO_LAYOUT_H 1
#include <ho_bitmap.h>
#include <ho_objmap.h>
/** @struct ho_layout
@brief libhocr layout struct
*/
typedef struct
{
/* paragraph settings type */
char font_spacing_code;
unsigned char type;
unsigned char dir;
int number_of_fonts;
/* black and white text image */
ho_bitmap *m_page_text;
ho_bitmap *m_page_blocks_mask;
/* line text and masks arrays [number of text blocks] */
int n_blocks;
ho_bitmap **m_blocks_text;
ho_bitmap **m_blocks_lines_mask;
/* words text and masks arrays [number of text blocks][number of lines in
* block] */
int *n_lines;
ho_bitmap ***m_lines_text;
ho_bitmap ***m_lines_line_mask;
ho_bitmap ***m_lines_words_mask;
/* number of words in a line */
int **n_words;
ho_bitmap ****m_words_text;
ho_bitmap ****m_words_line_mask;
ho_bitmap ****m_words_font_mask;
int ***n_fonts;
} ho_layout;
/**
new ho_layout
@param m_page_text a pointer to a text bitmap
@param font_spacing_code -3 tight .. 0 .. 3 spaced
@param type free text blocks or boxed
@param dir true-ltr false-rtl
@return a newly allocated layout
*/
ho_layout *ho_layout_new (const ho_bitmap * m_page_text,
const char font_spacing_code, const unsigned char type, const unsigned char dir);
/**
free a ho_layout
@param l_page a pointer to a ho_layout
@return FALSE
*/
int ho_layout_free (ho_layout * l_page);
/**
create a text blocks mask and count blocks in n_blocks
@param l_page a pointer to a ho_layout
@return FALSE
*/
int ho_layout_create_block_mask (ho_layout * l_page);
/**
create a text lines mask and count lines in n_lines[block_index]
@param l_page a pointer to a ho_layout
@param block_index the block_index to work on
@return FALSE
*/
int ho_layout_create_line_mask (ho_layout * l_page, const int block_index);
/**
create a text word mask and count words in n_words[block_index][line_index]
@param l_page a pointer to a ho_layout
@param block_index the block_index to work on
@param line_index the line_index to work on
@return FALSE
*/
int ho_layout_create_word_mask (ho_layout * l_page, const int block_index,
const int line_index);
/**
create a text font mask and count fonts in n_fontss[block_index][line_index][word_index]
@param l_page a pointer to a ho_layout
@param block_index the block_index to work on
@param line_index the line_index to work on
@param word_index the word_index to work on
@param slicing_threshold the slicing threshold
@param slicing_width the slicing width
@param line_leeway the line leeway below and above line
@return FALSE
*/
int ho_layout_create_font_mask (ho_layout * l_page, const int block_index,
const int line_index, const int word_index,
const unsigned char slicing_threshold, const unsigned char slicing_width,
const unsigned char line_leeway);
/**
new ho_bitamp of the text in a layout block
@param l_page the ho_layout to use
@param block_index block index
@return newly allocated ho_bitmap
*/
ho_bitmap *ho_layout_get_block_text (const ho_layout * l_page, int block_index);
/**
new ho_bitamp of the text in a layout line
@param l_page the ho_layout to use
@param block_index block index
@param line_index line index
@return newly allocated ho_bitmap
*/
ho_bitmap *ho_layout_get_line_text (const ho_layout * l_page, int block_index,
int line_index);
/**
new ho_bitamp of the text in a layout word
@param l_page the ho_layout to use
@param block_index block index
@param line_index line index
@param word_index word index
@return newly allocated ho_bitmap
*/
ho_bitmap *ho_layout_get_word_text (const ho_layout * l_page, int block_index,
int line_index, int word_index);
/**
new ho_bitamp of the text in a layout font
@param l_page the ho_layout to use
@param block_index block index
@param line_index line index
@param word_index word index
@param font_index font index
@return newly allocated ho_bitmap
*/
ho_bitmap *ho_layout_get_font_text (const ho_layout * l_page, int block_index,
int line_index, int word_index, int font_index);
/**
new ho_bitamp of the line in a layout line
@param l_page the ho_layout to use
@param block_index block index
@param line_index line index
@return newly allocated ho_bitmap
*/
ho_bitmap *ho_layout_get_line_line_mask (const ho_layout * l_page, int block_index,
int line_index);
/**
new ho_bitamp of the line in a layout word
@param l_page the ho_layout to use
@param block_index block index
@param line_index line index
@param word_index word index
@return newly allocated ho_bitmap
*/
ho_bitmap *ho_layout_get_word_line_mask (const ho_layout * l_page, int block_index,
int line_index, int word_index);
/**
new ho_bitamp of the line in a layout font
@param l_page the ho_layout to use
@param block_index block index
@param line_index line index
@param word_index word index
@param font_index font index
@return newly allocated ho_bitmap
*/
ho_bitmap *ho_layout_get_font_line_mask (const ho_layout * l_page, int block_index,
int line_index, int word_index, int font_index);
#endif /* HO_LAYOUT_H */
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