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.
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, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR
15 * Copyright (c) 2012, CS Systemes d'Information, France
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19 * modification, are permitted provided that the following conditions
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40 #include "opj_includes.h"
43 ==========================================================
44 Tag-tree coder interface
45 ==========================================================
48 opj_tgt_tree_t *opj_tgt_create(OPJ_UINT32 numleafsh, OPJ_UINT32 numleafsv) {
51 opj_tgt_node_t *node = 00;
52 opj_tgt_node_t *l_parent_node = 00;
53 opj_tgt_node_t *l_parent_node0 = 00;
54 opj_tgt_tree_t *tree = 00;
60 tree = (opj_tgt_tree_t *) opj_calloc(1,sizeof(opj_tgt_tree_t));
62 fprintf(stderr, "ERROR in tgt_create while allocating tree\n");
66 tree->numleafsh = numleafsh;
67 tree->numleafsv = numleafsv;
70 nplh[0] = (OPJ_INT32)numleafsh;
71 nplv[0] = (OPJ_INT32)numleafsv;
74 n = (OPJ_UINT32)(nplh[numlvls] * nplv[numlvls]);
75 nplh[numlvls + 1] = (nplh[numlvls] + 1) / 2;
76 nplv[numlvls + 1] = (nplv[numlvls] + 1) / 2;
82 if (tree->numnodes == 0) {
84 fprintf(stderr, "WARNING in tgt_create tree->numnodes == 0, no tree created.\n");
88 tree->nodes = (opj_tgt_node_t*) opj_calloc(tree->numnodes, sizeof(opj_tgt_node_t));
90 fprintf(stderr, "ERROR in tgt_create while allocating node of the tree\n");
94 tree->nodes_size = tree->numnodes * (OPJ_UINT32)sizeof(opj_tgt_node_t);
97 l_parent_node = &tree->nodes[tree->numleafsh * tree->numleafsv];
98 l_parent_node0 = l_parent_node;
100 for (i = 0; i < numlvls - 1; ++i) {
101 for (j = 0; j < nplv[i]; ++j) {
104 node->parent = l_parent_node;
107 node->parent = l_parent_node;
112 if ((j & 1) || j == nplv[i] - 1) {
113 l_parent_node0 = l_parent_node;
115 l_parent_node = l_parent_node0;
116 l_parent_node0 += nplh[i];
126 * Reinitialises a tag-tree from an existing one.
128 * @param p_tree the tree to reinitialize.
129 * @param p_num_leafs_h the width of the array of leafs of the tree
130 * @param p_num_leafs_v the height of the array of leafs of the tree
131 * @return a new tag-tree if successful, NULL otherwise
133 opj_tgt_tree_t *opj_tgt_init(opj_tgt_tree_t * p_tree,OPJ_UINT32 p_num_leafs_h, OPJ_UINT32 p_num_leafs_v)
135 OPJ_INT32 l_nplh[32];
136 OPJ_INT32 l_nplv[32];
137 opj_tgt_node_t *l_node = 00;
138 opj_tgt_node_t *l_parent_node = 00;
139 opj_tgt_node_t *l_parent_node0 = 00;
142 OPJ_UINT32 l_num_levels;
144 OPJ_UINT32 l_node_size;
150 if ((p_tree->numleafsh != p_num_leafs_h) || (p_tree->numleafsv != p_num_leafs_v)) {
151 p_tree->numleafsh = p_num_leafs_h;
152 p_tree->numleafsv = p_num_leafs_v;
155 l_nplh[0] = (OPJ_INT32)p_num_leafs_h;
156 l_nplv[0] = (OPJ_INT32)p_num_leafs_v;
157 p_tree->numnodes = 0;
160 n = (OPJ_UINT32)(l_nplh[l_num_levels] * l_nplv[l_num_levels]);
161 l_nplh[l_num_levels + 1] = (l_nplh[l_num_levels] + 1) / 2;
162 l_nplv[l_num_levels + 1] = (l_nplv[l_num_levels] + 1) / 2;
163 p_tree->numnodes += n;
169 if (p_tree->numnodes == 0) {
170 opj_tgt_destroy(p_tree);
173 l_node_size = p_tree->numnodes * (OPJ_UINT32)sizeof(opj_tgt_node_t);
175 if (l_node_size > p_tree->nodes_size) {
176 opj_tgt_node_t* new_nodes = (opj_tgt_node_t*) opj_realloc(p_tree->nodes, l_node_size);
178 fprintf(stderr, "ERROR Not enough memory to reinitialize the tag tree\n");
179 opj_tgt_destroy(p_tree);
182 p_tree->nodes = new_nodes;
183 memset(((char *) p_tree->nodes) + p_tree->nodes_size, 0 , l_node_size - p_tree->nodes_size);
184 p_tree->nodes_size = l_node_size;
186 l_node = p_tree->nodes;
187 l_parent_node = &p_tree->nodes[p_tree->numleafsh * p_tree->numleafsv];
188 l_parent_node0 = l_parent_node;
190 for (i = 0; i < l_num_levels - 1; ++i) {
191 for (j = 0; j < l_nplv[i]; ++j) {
194 l_node->parent = l_parent_node;
197 l_node->parent = l_parent_node;
202 if ((j & 1) || j == l_nplv[i] - 1)
204 l_parent_node0 = l_parent_node;
208 l_parent_node = l_parent_node0;
209 l_parent_node0 += l_nplh[i];
215 opj_tgt_reset(p_tree);
220 void opj_tgt_destroy(opj_tgt_tree_t *p_tree)
227 opj_free(p_tree->nodes);
233 void opj_tgt_reset(opj_tgt_tree_t *p_tree) {
235 opj_tgt_node_t * l_current_node = 00;;
241 l_current_node = p_tree->nodes;
242 for (i = 0; i < p_tree->numnodes; ++i)
244 l_current_node->value = 999;
245 l_current_node->low = 0;
246 l_current_node->known = 0;
251 void opj_tgt_setvalue(opj_tgt_tree_t *tree, OPJ_UINT32 leafno, OPJ_INT32 value) {
252 opj_tgt_node_t *node;
253 node = &tree->nodes[leafno];
254 while (node && node->value > value) {
260 void opj_tgt_encode(opj_bio_t *bio, opj_tgt_tree_t *tree, OPJ_UINT32 leafno, OPJ_INT32 threshold) {
261 opj_tgt_node_t *stk[31];
262 opj_tgt_node_t **stkptr;
263 opj_tgt_node_t *node;
267 node = &tree->nodes[leafno];
268 while (node->parent) {
275 if (low > node->low) {
281 while (low < threshold) {
282 if (low >= node->value) {
284 opj_bio_write(bio, 1, 1);
289 opj_bio_write(bio, 0, 1);
300 OPJ_UINT32 opj_tgt_decode(opj_bio_t *bio, opj_tgt_tree_t *tree, OPJ_UINT32 leafno, OPJ_INT32 threshold) {
301 opj_tgt_node_t *stk[31];
302 opj_tgt_node_t **stkptr;
303 opj_tgt_node_t *node;
307 node = &tree->nodes[leafno];
308 while (node->parent) {
315 if (low > node->low) {
320 while (low < threshold && low < node->value) {
321 if (opj_bio_read(bio, 1)) {
334 return (node->value < threshold) ? 1 : 0;