/*
- * The copyright in this software is being made available under the 2-clauses
- * BSD License, included below. This software may be subject to other third
+ * The copyright in this software is being made available under the 2-clauses
+ * BSD License, included below. This software may be subject to other third
* party and contributor rights, including patent rights, and no such rights
* are granted under this license.
*
* Copyright (c) 2002-2014, Professor Benoit Macq
* Copyright (c) 2001-2003, David Janssens
* Copyright (c) 2002-2003, Yannick Verschueren
- * Copyright (c) 2003-2007, Francois-Olivier Devaux
+ * Copyright (c) 2003-2007, Francois-Olivier Devaux
* Copyright (c) 2003-2014, Antonin Descampe
* Copyright (c) 2005, Herve Drolon, FreeImage Team
* All rights reserved.
#include "opj_includes.h"
-/*
+/*
==========================================================
Tag-tree coder interface
==========================================================
*/
-opj_tgt_tree_t *tgt_create(int numleafsh, int numleafsv) {
- int nplh[32];
- int nplv[32];
- opj_tgt_node_t *node = NULL;
- opj_tgt_node_t *parentnode = NULL;
- opj_tgt_node_t *parentnode0 = NULL;
- opj_tgt_tree_t *tree = NULL;
- int i, j, k;
- int numlvls;
- int n;
-
- tree = (opj_tgt_tree_t *) opj_malloc(sizeof(opj_tgt_tree_t));
- if(!tree) return NULL;
- tree->numleafsh = numleafsh;
- tree->numleafsv = numleafsv;
-
- numlvls = 0;
- nplh[0] = numleafsh;
- nplv[0] = numleafsv;
- tree->numnodes = 0;
- do {
- n = nplh[numlvls] * nplv[numlvls];
- nplh[numlvls + 1] = (nplh[numlvls] + 1) / 2;
- nplv[numlvls + 1] = (nplv[numlvls] + 1) / 2;
- tree->numnodes += n;
- ++numlvls;
- } while (n > 1);
-
- /* ADD */
- if (tree->numnodes == 0) {
- opj_free(tree);
- return NULL;
- }
-
- tree->nodes = (opj_tgt_node_t*) opj_calloc(tree->numnodes, sizeof(opj_tgt_node_t));
- if(!tree->nodes) {
- opj_free(tree);
- return NULL;
- }
-
- node = tree->nodes;
- parentnode = &tree->nodes[tree->numleafsh * tree->numleafsv];
- parentnode0 = parentnode;
-
- for (i = 0; i < numlvls - 1; ++i) {
- for (j = 0; j < nplv[i]; ++j) {
- k = nplh[i];
- while (--k >= 0) {
- node->parent = parentnode;
- ++node;
- if (--k >= 0) {
- node->parent = parentnode;
- ++node;
- }
- ++parentnode;
- }
- if ((j & 1) || j == nplv[i] - 1) {
- parentnode0 = parentnode;
- } else {
- parentnode = parentnode0;
- parentnode0 += nplh[i];
- }
- }
- }
- node->parent = 0;
-
- tgt_reset(tree);
-
- return tree;
+opj_tgt_tree_t *tgt_create(int numleafsh, int numleafsv)
+{
+ int nplh[32];
+ int nplv[32];
+ opj_tgt_node_t *node = NULL;
+ opj_tgt_node_t *parentnode = NULL;
+ opj_tgt_node_t *parentnode0 = NULL;
+ opj_tgt_tree_t *tree = NULL;
+ int i, j, k;
+ int numlvls;
+ int n;
+
+ tree = (opj_tgt_tree_t *) opj_malloc(sizeof(opj_tgt_tree_t));
+ if (!tree) {
+ return NULL;
+ }
+ tree->numleafsh = numleafsh;
+ tree->numleafsv = numleafsv;
+
+ numlvls = 0;
+ nplh[0] = numleafsh;
+ nplv[0] = numleafsv;
+ tree->numnodes = 0;
+ do {
+ n = nplh[numlvls] * nplv[numlvls];
+ nplh[numlvls + 1] = (nplh[numlvls] + 1) / 2;
+ nplv[numlvls + 1] = (nplv[numlvls] + 1) / 2;
+ tree->numnodes += n;
+ ++numlvls;
+ } while (n > 1);
+
+ /* ADD */
+ if (tree->numnodes == 0) {
+ opj_free(tree);
+ return NULL;
+ }
+
+ tree->nodes = (opj_tgt_node_t*) opj_calloc(tree->numnodes,
+ sizeof(opj_tgt_node_t));
+ if (!tree->nodes) {
+ opj_free(tree);
+ return NULL;
+ }
+
+ node = tree->nodes;
+ parentnode = &tree->nodes[tree->numleafsh * tree->numleafsv];
+ parentnode0 = parentnode;
+
+ for (i = 0; i < numlvls - 1; ++i) {
+ for (j = 0; j < nplv[i]; ++j) {
+ k = nplh[i];
+ while (--k >= 0) {
+ node->parent = parentnode;
+ ++node;
+ if (--k >= 0) {
+ node->parent = parentnode;
+ ++node;
+ }
+ ++parentnode;
+ }
+ if ((j & 1) || j == nplv[i] - 1) {
+ parentnode0 = parentnode;
+ } else {
+ parentnode = parentnode0;
+ parentnode0 += nplh[i];
+ }
+ }
+ }
+ node->parent = 0;
+
+ tgt_reset(tree);
+
+ return tree;
}
-void tgt_destroy(opj_tgt_tree_t *tree) {
- opj_free(tree->nodes);
- opj_free(tree);
+void tgt_destroy(opj_tgt_tree_t *tree)
+{
+ opj_free(tree->nodes);
+ opj_free(tree);
}
-void tgt_reset(opj_tgt_tree_t *tree) {
- int i;
-
- if (NULL == tree)
- return;
-
- for (i = 0; i < tree->numnodes; i++) {
- tree->nodes[i].value = 999;
- tree->nodes[i].low = 0;
- tree->nodes[i].known = 0;
- }
+void tgt_reset(opj_tgt_tree_t *tree)
+{
+ int i;
+
+ if (NULL == tree) {
+ return;
+ }
+
+ for (i = 0; i < tree->numnodes; i++) {
+ tree->nodes[i].value = 999;
+ tree->nodes[i].low = 0;
+ tree->nodes[i].known = 0;
+ }
}
-void tgt_setvalue(opj_tgt_tree_t *tree, int leafno, int value) {
- opj_tgt_node_t *node;
- node = &tree->nodes[leafno];
- while (node && node->value > value) {
- node->value = value;
- node = node->parent;
- }
+void tgt_setvalue(opj_tgt_tree_t *tree, int leafno, int value)
+{
+ opj_tgt_node_t *node;
+ node = &tree->nodes[leafno];
+ while (node && node->value > value) {
+ node->value = value;
+ node = node->parent;
+ }
}
-void tgt_encode(opj_bio_t *bio, opj_tgt_tree_t *tree, int leafno, int threshold) {
- opj_tgt_node_t *stk[31];
- opj_tgt_node_t **stkptr;
- opj_tgt_node_t *node;
- int low;
-
- stkptr = stk;
- node = &tree->nodes[leafno];
- while (node->parent) {
- *stkptr++ = node;
- node = node->parent;
- }
-
- low = 0;
- for (;;) {
- if (low > node->low) {
- node->low = low;
- } else {
- low = node->low;
- }
-
- while (low < threshold) {
- if (low >= node->value) {
- if (!node->known) {
- bio_write(bio, 1, 1);
- node->known = 1;
- }
- break;
- }
- bio_write(bio, 0, 1);
- ++low;
- }
-
- node->low = low;
- if (stkptr == stk)
- break;
- node = *--stkptr;
- }
+void tgt_encode(opj_bio_t *bio, opj_tgt_tree_t *tree, int leafno,
+ int threshold)
+{
+ opj_tgt_node_t *stk[31];
+ opj_tgt_node_t **stkptr;
+ opj_tgt_node_t *node;
+ int low;
+
+ stkptr = stk;
+ node = &tree->nodes[leafno];
+ while (node->parent) {
+ *stkptr++ = node;
+ node = node->parent;
+ }
+
+ low = 0;
+ for (;;) {
+ if (low > node->low) {
+ node->low = low;
+ } else {
+ low = node->low;
+ }
+
+ while (low < threshold) {
+ if (low >= node->value) {
+ if (!node->known) {
+ bio_write(bio, 1, 1);
+ node->known = 1;
+ }
+ break;
+ }
+ bio_write(bio, 0, 1);
+ ++low;
+ }
+
+ node->low = low;
+ if (stkptr == stk) {
+ break;
+ }
+ node = *--stkptr;
+ }
}
-int tgt_decode(opj_bio_t *bio, opj_tgt_tree_t *tree, int leafno, int threshold) {
- opj_tgt_node_t *stk[31];
- opj_tgt_node_t **stkptr;
- opj_tgt_node_t *node;
- int low;
-
- stkptr = stk;
- node = &tree->nodes[leafno];
- while (node->parent) {
- *stkptr++ = node;
- node = node->parent;
- }
-
- low = 0;
- for (;;) {
- if (low > node->low) {
- node->low = low;
- } else {
- low = node->low;
- }
- while (low < threshold && low < node->value) {
- if (bio_read(bio, 1)) {
- node->value = low;
- } else {
- ++low;
- }
- }
- node->low = low;
- if (stkptr == stk) {
- break;
- }
- node = *--stkptr;
- }
-
- return (node->value < threshold) ? 1 : 0;
+int tgt_decode(opj_bio_t *bio, opj_tgt_tree_t *tree, int leafno, int threshold)
+{
+ opj_tgt_node_t *stk[31];
+ opj_tgt_node_t **stkptr;
+ opj_tgt_node_t *node;
+ int low;
+
+ stkptr = stk;
+ node = &tree->nodes[leafno];
+ while (node->parent) {
+ *stkptr++ = node;
+ node = node->parent;
+ }
+
+ low = 0;
+ for (;;) {
+ if (low > node->low) {
+ node->low = low;
+ } else {
+ low = node->low;
+ }
+ while (low < threshold && low < node->value) {
+ if (bio_read(bio, 1)) {
+ node->value = low;
+ } else {
+ ++low;
+ }
+ }
+ node->low = low;
+ if (stkptr == stk) {
+ break;
+ }
+ node = *--stkptr;
+ }
+
+ return (node->value < threshold) ? 1 : 0;
}
projects / openjpeg.git / blobdiff