/usr/include/leptonica/array.h is in libleptonica-dev 1.69-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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- Copyright (C) 2001 Leptonica. All rights reserved.
- This software is distributed in the hope that it will be
- useful, but with NO WARRANTY OF ANY KIND.
- No author or distributor accepts responsibility to anyone for the
- consequences of using this software, or for whether it serves any
- particular purpose or works at all, unless he or she says so in
- writing. Everyone is granted permission to copy, modify and
- redistribute this source code, for commercial or non-commercial
- purposes, with the following restrictions: (1) the origin of this
- source code must not be misrepresented; (2) modified versions must
- be plainly marked as such; and (3) this notice may not be removed
- or altered from any source or modified source distribution.
*====================================================================*/
#ifndef LEPTONICA_ARRAY_H
#define LEPTONICA_ARRAY_H
/*
* Contains the following structs:
* struct Numa
* struct Numaa
* struct Numa2d
* struct NumaHash
* struct L_Dna
* struct L_Dnaa
* struct Sarray
* struct L_Bytea
*
* Contains definitions for:
* Numa interpolation flags
*/
/*------------------------------------------------------------------------*
* Array Structs *
*------------------------------------------------------------------------*/
#define NUMA_VERSION_NUMBER 1
/* Number array: an array of floats */
struct Numa
{
l_int32 nalloc; /* size of allocated number array */
l_int32 n; /* number of numbers saved */
l_int32 refcount; /* reference count (1 if no clones) */
l_float32 startx; /* x value assigned to array[0] */
l_float32 delx; /* change in x value as i --> i + 1 */
l_float32 *array; /* number array */
};
typedef struct Numa NUMA;
/* Array of number arrays */
struct Numaa
{
l_int32 nalloc; /* size of allocated ptr array */
l_int32 n; /* number of Numa saved */
struct Numa **numa; /* array of Numa */
};
typedef struct Numaa NUMAA;
/* Sparse 2-dimensional array of number arrays */
struct Numa2d
{
l_int32 nrows; /* number of rows allocated for ptr array */
l_int32 ncols; /* number of cols allocated for ptr array */
l_int32 initsize; /* initial size of each numa that is made */
struct Numa ***numa; /* 2D array of Numa */
};
typedef struct Numa2d NUMA2D;
/* A hash table of Numas */
struct NumaHash
{
l_int32 nbuckets;
l_int32 initsize; /* initial size of each numa that is made */
struct Numa **numa;
};
typedef struct NumaHash NUMAHASH;
#define DNA_VERSION_NUMBER 1
/* Double number array: an array of doubles */
struct L_Dna
{
l_int32 nalloc; /* size of allocated number array */
l_int32 n; /* number of numbers saved */
l_int32 refcount; /* reference count (1 if no clones) */
l_float64 startx; /* x value assigned to array[0] */
l_float64 delx; /* change in x value as i --> i + 1 */
l_float64 *array; /* number array */
};
typedef struct L_Dna L_DNA;
/* Array of double number arrays */
struct L_Dnaa
{
l_int32 nalloc; /* size of allocated ptr array */
l_int32 n; /* number of L_Dna saved */
struct L_Dna **dna; /* array of L_Dna */
};
typedef struct L_Dnaa L_DNAA;
#define SARRAY_VERSION_NUMBER 1
/* String array: an array of C strings */
struct Sarray
{
l_int32 nalloc; /* size of allocated ptr array */
l_int32 n; /* number of strings allocated */
l_int32 refcount; /* reference count (1 if no clones) */
char **array; /* string array */
};
typedef struct Sarray SARRAY;
/* Byte array (analogous to C++ "string") */
struct L_Bytea
{
size_t nalloc; /* number of bytes allocated in data array */
size_t size; /* number of bytes presently used */
l_int32 refcount; /* reference count (1 if no clones) */
l_uint8 *data; /* data array */
};
typedef struct L_Bytea L_BYTEA;
/*------------------------------------------------------------------------*
* Array flags *
*------------------------------------------------------------------------*/
/* Flags for interpolation in Numa */
enum {
L_LINEAR_INTERP = 1, /* linear */
L_QUADRATIC_INTERP = 2 /* quadratic */
};
/* Flags for added borders in Numa and Fpix */
enum {
L_CONTINUED_BORDER = 1, /* extended with same value */
L_SLOPE_BORDER = 2, /* extended with constant normal derivative */
L_MIRRORED_BORDER = 3 /* mirrored */
};
#endif /* LEPTONICA_ARRAY_H */
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