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comparison mupdf-source/thirdparty/openjpeg/src/lib/openjp2/tgt.h @ 2:b50eed0cc0ef upstream

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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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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * The copyright in this software is being made available under the 2-clauses
3 * BSD License, included below. This software may be subject to other third
4 * party and contributor rights, including patent rights, and no such rights
5 * are granted under this license.
6 *
7 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
8 * Copyright (c) 2002-2014, Professor Benoit Macq
9 * Copyright (c) 2001-2003, David Janssens
10 * Copyright (c) 2002-2003, Yannick Verschueren
11 * Copyright (c) 2003-2007, Francois-Olivier Devaux
12 * Copyright (c) 2003-2014, Antonin Descampe
13 * Copyright (c) 2005, Herve Drolon, FreeImage Team
14 * Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
15 * Copyright (c) 2011-2012, Centre National d'Etudes Spatiales (CNES), France
16 * Copyright (c) 2012, CS Systemes d'Information, France
17 * All rights reserved.
18 *
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions
21 * are met:
22 * 1. Redistributions of source code must retain the above copyright
23 * notice, this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in the
26 * documentation and/or other materials provided with the distribution.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
29 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
32 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGE.
39 */
40
41 #ifndef OPJ_TGT_H
42 #define OPJ_TGT_H
43 /**
44 @file tgt.h
45 @brief Implementation of a tag-tree coder (TGT)
46
47 The functions in TGT.C have for goal to realize a tag-tree coder. The functions in TGT.C
48 are used by some function in T2.C.
49 */
50
51 /** @defgroup TGT TGT - Implementation of a tag-tree coder */
52 /*@{*/
53
54 /**
55 Tag node
56 */
57 typedef struct opj_tgt_node {
58 struct opj_tgt_node *parent;
59 OPJ_INT32 value;
60 OPJ_INT32 low;
61 OPJ_UINT32 known;
62 } opj_tgt_node_t;
63
64 /**
65 Tag tree
66 */
67 typedef struct opj_tgt_tree {
68 OPJ_UINT32 numleafsh;
69 OPJ_UINT32 numleafsv;
70 OPJ_UINT32 numnodes;
71 opj_tgt_node_t *nodes;
72 OPJ_UINT32 nodes_size; /* maximum size taken by nodes */
73 } opj_tgt_tree_t;
74
75
76 /** @name Exported functions */
77 /*@{*/
78 /* ----------------------------------------------------------------------- */
79 /**
80 Create a tag-tree
81 @param numleafsh Width of the array of leafs of the tree
82 @param numleafsv Height of the array of leafs of the tree
83 @param p_manager the event manager
84 @return Returns a new tag-tree if successful, returns NULL otherwise
85 */
86 opj_tgt_tree_t *opj_tgt_create(OPJ_UINT32 numleafsh, OPJ_UINT32 numleafsv,
87 opj_event_mgr_t *p_manager);
88
89 /**
90 * Reinitialises a tag-tree from an exixting one.
91 *
92 * @param p_tree the tree to reinitialize.
93 * @param p_num_leafs_h the width of the array of leafs of the tree
94 * @param p_num_leafs_v the height of the array of leafs of the tree
95 * @param p_manager the event manager
96 * @return a new tag-tree if successful, NULL otherwise
97 */
98 opj_tgt_tree_t *opj_tgt_init(opj_tgt_tree_t * p_tree,
99 OPJ_UINT32 p_num_leafs_h,
100 OPJ_UINT32 p_num_leafs_v, opj_event_mgr_t *p_manager);
101 /**
102 Destroy a tag-tree, liberating memory
103 @param tree Tag-tree to destroy
104 */
105 void opj_tgt_destroy(opj_tgt_tree_t *tree);
106 /**
107 Reset a tag-tree (set all leaves to 0)
108 @param tree Tag-tree to reset
109 */
110 void opj_tgt_reset(opj_tgt_tree_t *tree);
111 /**
112 Set the value of a leaf of a tag-tree
113 @param tree Tag-tree to modify
114 @param leafno Number that identifies the leaf to modify
115 @param value New value of the leaf
116 */
117 void opj_tgt_setvalue(opj_tgt_tree_t *tree,
118 OPJ_UINT32 leafno,
119 OPJ_INT32 value);
120 /**
121 Encode the value of a leaf of the tag-tree up to a given threshold
122 @param bio Pointer to a BIO handle
123 @param tree Tag-tree to modify
124 @param leafno Number that identifies the leaf to encode
125 @param threshold Threshold to use when encoding value of the leaf
126 */
127 void opj_tgt_encode(opj_bio_t *bio,
128 opj_tgt_tree_t *tree,
129 OPJ_UINT32 leafno,
130 OPJ_INT32 threshold);
131 /**
132 Decode the value of a leaf of the tag-tree up to a given threshold
133 @param bio Pointer to a BIO handle
134 @param tree Tag-tree to decode
135 @param leafno Number that identifies the leaf to decode
136 @param threshold Threshold to use when decoding value of the leaf
137 @return Returns 1 if the node's value < threshold, returns 0 otherwise
138 */
139 OPJ_UINT32 opj_tgt_decode(opj_bio_t *bio,
140 opj_tgt_tree_t *tree,
141 OPJ_UINT32 leafno,
142 OPJ_INT32 threshold);
143 /* ----------------------------------------------------------------------- */
144 /*@}*/
145
146 /*@}*/
147
148 #endif /* OPJ_TGT_H */