| 0,0 → 1,114 |
|---|
| /* |
| * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium |
| * Copyright (c) 2002-2007, Professor Benoit Macq |
| * Copyright (c) 2001-2003, David Janssens |
| * Copyright (c) 2002-2003, Yannick Verschueren |
| * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe |
| * Copyright (c) 2005, Herve Drolon, FreeImage Team |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef __TGT_H |
| #define __TGT_H |
| /** |
| @file tgt.h |
| @brief Implementation of a tag-tree coder (TGT) |
| |
| The functions in TGT.C have for goal to realize a tag-tree coder. The functions in TGT.C |
| are used by some function in T2.C. |
| */ |
| |
| /** @defgroup TGT TGT - Implementation of a tag-tree coder */ |
| /*@{*/ |
| |
| /** |
| Tag node |
| */ |
| typedef struct opj_tgt_node { |
| struct opj_tgt_node *parent; |
| int value; |
| int low; |
| int known; |
| } opj_tgt_node_t; |
| |
| /** |
| Tag tree |
| */ |
| typedef struct opj_tgt_tree { |
| int numleafsh; |
| int numleafsv; |
| int numnodes; |
| opj_tgt_node_t *nodes; |
| } opj_tgt_tree_t; |
| |
| /** @name Exported functions */ |
| /*@{*/ |
| /* ----------------------------------------------------------------------- */ |
| /** |
| Create a tag-tree |
| @param numleafsh Width of the array of leafs of the tree |
| @param numleafsv Height of the array of leafs of the tree |
| @return Returns a new tag-tree if successful, returns NULL otherwise |
| */ |
| opj_tgt_tree_t *tgt_create(int numleafsh, int numleafsv); |
| /** |
| Destroy a tag-tree, liberating memory |
| @param tree Tag-tree to destroy |
| */ |
| void tgt_destroy(opj_tgt_tree_t *tree); |
| /** |
| Reset a tag-tree (set all leaves to 0) |
| @param tree Tag-tree to reset |
| */ |
| void tgt_reset(opj_tgt_tree_t *tree); |
| /** |
| Set the value of a leaf of a tag-tree |
| @param tree Tag-tree to modify |
| @param leafno Number that identifies the leaf to modify |
| @param value New value of the leaf |
| */ |
| void tgt_setvalue(opj_tgt_tree_t *tree, int leafno, int value); |
| /** |
| Encode the value of a leaf of the tag-tree up to a given threshold |
| @param bio Pointer to a BIO handle |
| @param tree Tag-tree to modify |
| @param leafno Number that identifies the leaf to encode |
| @param threshold Threshold to use when encoding value of the leaf |
| */ |
| void tgt_encode(opj_bio_t *bio, opj_tgt_tree_t *tree, int leafno, int threshold); |
| /** |
| Decode the value of a leaf of the tag-tree up to a given threshold |
| @param bio Pointer to a BIO handle |
| @param tree Tag-tree to decode |
| @param leafno Number that identifies the leaf to decode |
| @param threshold Threshold to use when decoding value of the leaf |
| @return Returns 1 if the node's value < threshold, returns 0 otherwise |
| */ |
| int tgt_decode(opj_bio_t *bio, opj_tgt_tree_t *tree, int leafno, int threshold); |
| /* ----------------------------------------------------------------------- */ |
| /*@}*/ |
| |
| /*@}*/ |
| |
| #endif /* __TGT_H */ |