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