1 /* 2 * Copyright (c) 1999-2000 Image Power, Inc. and the University of 3 * British Columbia. 4 * Copyright (c) 2001-2002 Michael David Adams. 5 * All rights reserved. 6 */ 7 8 /* __START_OF_JASPER_LICENSE__ 9 * 10 * JasPer License Version 2.0 11 * 12 * Copyright (c) 2001-2006 Michael David Adams 13 * Copyright (c) 1999-2000 Image Power, Inc. 14 * Copyright (c) 1999-2000 The University of British Columbia 15 * 16 * All rights reserved. 17 * 18 * Permission is hereby granted, free of charge, to any person (the 19 * "User") obtaining a copy of this software and associated documentation 20 * files (the "Software"), to deal in the Software without restriction, 21 * including without limitation the rights to use, copy, modify, merge, 22 * publish, distribute, and/or sell copies of the Software, and to permit 23 * persons to whom the Software is furnished to do so, subject to the 24 * following conditions: 25 * 26 * 1. The above copyright notices and this permission notice (which 27 * includes the disclaimer below) shall be included in all copies or 28 * substantial portions of the Software. 29 * 30 * 2. The name of a copyright holder shall not be used to endorse or 31 * promote products derived from the Software without specific prior 32 * written permission. 33 * 34 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS 35 * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER 36 * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 37 * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 38 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 39 * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO 40 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL 41 * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING 42 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, 43 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 44 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE 45 * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE 46 * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY. 47 * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS 48 * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL 49 * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS 50 * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE 51 * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE 52 * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL 53 * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES, 54 * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL 55 * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH 56 * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH, 57 * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH 58 * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY 59 * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. 60 * 61 * __END_OF_JASPER_LICENSE__ 62 */ 63 64 /* 65 * Tag Tree Library 66 * 67 * $Id: jpc_tagtree.h,v 1.2 2008-05-26 09:40:52 vp153 Exp $ 68 */ 69 70 #ifndef JPC_TAGTREE_H 71 #define JPC_TAGTREE_H 72 73 /******************************************************************************\ 74 * Includes 75 \******************************************************************************/ 76 77 #include <limits.h> 78 #include <stdio.h> 79 80 #include "jpc_bs.h" 81 82 /******************************************************************************\ 83 * Constants 84 \******************************************************************************/ 85 86 /* The maximum allowable depth for a tag tree. */ 87 #define JPC_TAGTREE_MAXDEPTH 32 88 89 /******************************************************************************\ 90 * Types 91 \******************************************************************************/ 92 93 /* 94 * Tag tree node. 95 */ 96 97 typedef struct jpc_tagtreenode_ { 98 99 /* The parent of this node. */ 100 struct jpc_tagtreenode_ *parent_; 101 102 /* The value associated with this node. */ 103 int value_; 104 105 /* The lower bound on the value associated with this node. */ 106 int low_; 107 108 /* A flag indicating if the value is known exactly. */ 109 int known_; 110 111 } jpc_tagtreenode_t; 112 113 /* 114 * Tag tree. 115 */ 116 117 typedef struct { 118 119 /* The number of leaves in the horizontal direction. */ 120 int numleafsh_; 121 122 /* The number of leaves in the vertical direction. */ 123 int numleafsv_; 124 125 /* The total number of nodes in the tree. */ 126 int numnodes_; 127 128 /* The nodes. */ 129 jpc_tagtreenode_t *nodes_; 130 131 } jpc_tagtree_t; 132 133 /******************************************************************************\ 134 * Functions. 135 \******************************************************************************/ 136 137 /* Create a tag tree. */ 138 jpc_tagtree_t *jpc_tagtree_create(int numleafsh, int numleafsv); 139 140 /* Destroy a tag tree. */ 141 void jpc_tagtree_destroy(jpc_tagtree_t *tree); 142 143 /* Copy data from one tag tree to another. */ 144 void jpc_tagtree_copy(jpc_tagtree_t *dsttree, jpc_tagtree_t *srctree); 145 146 /* Reset the tag tree state. */ 147 void jpc_tagtree_reset(jpc_tagtree_t *tree); 148 149 /* Set the value associated with a particular leaf node of a tag tree. */ 150 void jpc_tagtree_setvalue(jpc_tagtree_t *tree, jpc_tagtreenode_t *leaf, 151 int value); 152 153 /* Get a pointer to a particular leaf node. */ 154 jpc_tagtreenode_t *jpc_tagtree_getleaf(jpc_tagtree_t *tree, int n); 155 156 /* Invoke the tag tree decoding procedure. */ 157 int jpc_tagtree_decode(jpc_tagtree_t *tree, jpc_tagtreenode_t *leaf, 158 int threshold, jpc_bitstream_t *in); 159 160 /* Invoke the tag tree encoding procedure. */ 161 int jpc_tagtree_encode(jpc_tagtree_t *tree, jpc_tagtreenode_t *leaf, 162 int threshold, jpc_bitstream_t *out); 163 164 /* Dump a tag tree (for debugging purposes). */ 165 void jpc_tagtree_dump(jpc_tagtree_t *tree, FILE *out); 166 167 #endif 168
