annotate mupdf-source/thirdparty/leptonica/src/array_internal.h @ 2:b50eed0cc0ef upstream

ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1 /*====================================================================*
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2 - Copyright (C) 2001 Leptonica. All rights reserved.
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3 -
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4 - Redistribution and use in source and binary forms, with or without
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5 - modification, are permitted provided that the following conditions
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6 - are met:
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7 - 1. Redistributions of source code must retain the above copyright
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8 - notice, this list of conditions and the following disclaimer.
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9 - 2. Redistributions in binary form must reproduce the above
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10 - copyright notice, this list of conditions and the following
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11 - disclaimer in the documentation and/or other materials
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12 - provided with the distribution.
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13 -
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14 - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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15 - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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16 - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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17 - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
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18 - CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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19 - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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20 - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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21 - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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22 - OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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23 - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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24 - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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25 *====================================================================*/
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27 #ifndef LEPTONICA_ARRAY_INTERNAL_H
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28 #define LEPTONICA_ARRAY_INTERNAL_H
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30 /*!
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31 * \file array_internal.h
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32 *
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33 * <pre>
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34 * Contains the following structs:
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35 * struct Numa array of floats
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36 * struct Numaa
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37 * struct L_Dna array of doubles
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38 * struct L_Dnaa
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39 * struct L_Dnahash
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40 * struct Sarray array of C-strings
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41 * struct L_Bytea array of bytes
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42 *
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43 * This file can be #included after allheaders.h in source files that
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44 * require direct access to the internal data fields in these structs.
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45 *
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46 * Here are the non-image-related arrays in leptonica:
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47 * * Numa, L_Dna, L_Ptra, Sarray:
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48 * These have most of the typical operations of vectors, such as add,
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49 * insert, remove and replace.
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50 * * Numaa, L_Dnaa, L_Ptraa:
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51 * These are arrays of float, double and generic pointer arrays.
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52 * * L_Bytea:
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53 * This is an array of bytes, analogous to a C++ string.
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54 * * L_Dnahash:
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55 * This is a simple hashing for integers, used in the jbig2 classifier.
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56 * </pre>
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57 */
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58
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59
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60 /*------------------------------------------------------------------------*
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61 * Array Structs *
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62 *------------------------------------------------------------------------*/
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63 /*! Numa version for serialization */
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64 #define NUMA_VERSION_NUMBER 1
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65
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66 /*! Number array: an array of floats */
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67 struct Numa
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68 {
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69 l_int32 nalloc; /*!< size of allocated number array */
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70 l_int32 n; /*!< number of numbers saved */
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71 l_atomic refcount; /*!< reference count (1 if no clones) */
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72 l_float32 startx; /*!< x value assigned to array[0] */
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73 l_float32 delx; /*!< change in x value as i --> i + 1 */
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74 l_float32 *array; /*!< number array */
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75 };
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76
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77 /*! Array of number arrays */
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78 struct Numaa
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79 {
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80 l_int32 nalloc; /*!< size of allocated ptr array */
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81 l_int32 n; /*!< number of Numa saved */
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82 struct Numa **numa; /*!< array of Numa */
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83 };
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84
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85 /*! Dna version for serialization */
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86 #define DNA_VERSION_NUMBER 1
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87
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88 /*! Double number array: an array of doubles */
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89 struct L_Dna
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90 {
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91 l_int32 nalloc; /*!< size of allocated number array */
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92 l_int32 n; /*!< number of numbers saved */
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93 l_atomic refcount; /*!< reference count (1 if no clones) */
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94 l_float64 startx; /*!< x value assigned to array[0] */
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95 l_float64 delx; /*!< change in x value as i --> i + 1 */
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96 l_float64 *array; /*!< number array */
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97 };
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98
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99 /*! Array of double number arrays */
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100 struct L_Dnaa
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101 {
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102 l_int32 nalloc; /*!< size of allocated ptr array */
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103 l_int32 n; /*!< number of L_Dna saved */
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104 struct L_Dna **dna; /*!< array of L_Dna */
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105 };
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106
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107 struct L_DnaHash
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108 {
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109 l_int32 nbuckets;
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110 l_int32 initsize; /*!< initial size of each dna that is made */
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111 struct L_Dna **dna; /*!< array of L_Dna */
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112 };
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113
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114 /*! Sarray version for serialization */
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115 #define SARRAY_VERSION_NUMBER 1
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116
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117 /*! String array: an array of C strings */
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118 struct Sarray
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119 {
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120 l_int32 nalloc; /*!< size of allocated ptr array */
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121 l_int32 n; /*!< number of strings allocated */
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122 l_atomic refcount; /*!< reference count (1 if no clones) */
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123 char **array; /*!< string array */
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124 };
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125
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126 /*! Byte array (analogous to C++ "string") */
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127 struct L_Bytea
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128 {
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129 size_t nalloc; /*!< number of bytes allocated in data array */
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130 size_t size; /*!< number of bytes presently used */
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131 l_atomic refcount; /*!< reference count (1 if no clones) */
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132 l_uint8 *data; /*!< data array */
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133 };
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134
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135 #endif /* LEPTONICA_ARRAY_INTERNAL_H */