Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/openjpeg/src/lib/openjp2/bio.h @ 22:d77477b4e151

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Let _int_rc() also handle (i.e. ignore) a local version suffix
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 12:05:57 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * The copyright in this software is being made available under the 2-clauses
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3 * BSD License, included below. This software may be subject to other third
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4 * party and contributor rights, including patent rights, and no such rights
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5 * are granted under this license.
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6 *
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7 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
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8 * Copyright (c) 2002-2014, Professor Benoit Macq
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9 * Copyright (c) 2001-2003, David Janssens
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10 * Copyright (c) 2002-2003, Yannick Verschueren
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11 * Copyright (c) 2003-2007, Francois-Olivier Devaux
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12 * Copyright (c) 2003-2014, Antonin Descampe
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13 * Copyright (c) 2005, Herve Drolon, FreeImage Team
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14 * All rights reserved.
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15 *
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16 * Redistribution and use in source and binary forms, with or without
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17 * modification, are permitted provided that the following conditions
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18 * are met:
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19 * 1. Redistributions of source code must retain the above copyright
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20 * notice, this list of conditions and the following disclaimer.
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21 * 2. Redistributions in binary form must reproduce the above copyright
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22 * notice, this list of conditions and the following disclaimer in the
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23 * documentation and/or other materials provided with the distribution.
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24 *
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25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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28 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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29 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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35 * POSSIBILITY OF SUCH DAMAGE.
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36 */
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38 #ifndef OPJ_BIO_H
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39 #define OPJ_BIO_H
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41 #include <stddef.h> /* ptrdiff_t */
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42
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43 /**
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44 @file bio.h
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45 @brief Implementation of an individual bit input-output (BIO)
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46
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47 The functions in BIO.C have for goal to realize an individual bit input - output.
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48 */
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49
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50 /** @defgroup BIO BIO - Individual bit input-output stream */
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51 /*@{*/
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52
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53 /**
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54 Individual bit input-output stream (BIO)
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55 */
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56 typedef struct opj_bio {
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57 /** pointer to the start of the buffer */
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58 OPJ_BYTE *start;
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59 /** pointer to the end of the buffer */
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60 OPJ_BYTE *end;
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61 /** pointer to the present position in the buffer */
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62 OPJ_BYTE *bp;
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63 /** temporary place where each byte is read or written */
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64 OPJ_UINT32 buf;
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65 /** coder : number of bits free to write. decoder : number of bits read */
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66 OPJ_UINT32 ct;
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67 } opj_bio_t;
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68
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69 /** @name Exported functions */
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70 /*@{*/
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71 /* ----------------------------------------------------------------------- */
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72 /**
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73 Create a new BIO handle
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74 @return Returns a new BIO handle if successful, returns NULL otherwise
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75 */
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76 opj_bio_t* opj_bio_create(void);
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77 /**
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78 Destroy a previously created BIO handle
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79 @param bio BIO handle to destroy
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80 */
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81 void opj_bio_destroy(opj_bio_t *bio);
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82 /**
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83 Number of bytes written.
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84 @param bio BIO handle
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85 @return Returns the number of bytes written
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86 */
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87 ptrdiff_t opj_bio_numbytes(opj_bio_t *bio);
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88 /**
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89 Init encoder
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90 @param bio BIO handle
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91 @param bp Output buffer
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92 @param len Output buffer length
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93 */
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94 void opj_bio_init_enc(opj_bio_t *bio, OPJ_BYTE *bp, OPJ_UINT32 len);
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95 /**
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96 Init decoder
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97 @param bio BIO handle
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98 @param bp Input buffer
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99 @param len Input buffer length
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100 */
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101 void opj_bio_init_dec(opj_bio_t *bio, OPJ_BYTE *bp, OPJ_UINT32 len);
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102 /**
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103 Write bits
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104 @param bio BIO handle
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105 @param v Value of bits
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106 @param n Number of bits to write
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107 */
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108 void opj_bio_write(opj_bio_t *bio, OPJ_UINT32 v, OPJ_UINT32 n);
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109
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110 /**
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111 Write a bit
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112 @param bio BIO handle
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113 @param b Bit to write (0 or 1)
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114 */
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115 void opj_bio_putbit(opj_bio_t *bio, OPJ_UINT32 b);
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116
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117 /**
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118 Read bits
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119 @param bio BIO handle
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120 @param n Number of bits to read
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121 @return Returns the corresponding read number
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122 */
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123 OPJ_UINT32 opj_bio_read(opj_bio_t *bio, OPJ_UINT32 n);
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124 /**
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125 Flush bits
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126 @param bio BIO handle
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127 @return Returns OPJ_TRUE if successful, returns OPJ_FALSE otherwise
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128 */
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129 OPJ_BOOL opj_bio_flush(opj_bio_t *bio);
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130 /**
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131 Passes the ending bits (coming from flushing)
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132 @param bio BIO handle
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133 @return Returns OPJ_TRUE if successful, returns OPJ_FALSE otherwise
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134 */
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135 OPJ_BOOL opj_bio_inalign(opj_bio_t *bio);
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136 /* ----------------------------------------------------------------------- */
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137 /*@}*/
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138
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139 /*@}*/
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140
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141 #endif /* OPJ_BIO_H */
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142