mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-28 09:19:41 +03:00
115 lines
3.9 KiB
C
115 lines
3.9 KiB
C
/*
|
|
* 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 */
|