101 lines
3.4 KiB
C
101 lines
3.4 KiB
C
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/*
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* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2007, Professor Benoit Macq
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* Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
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* Copyright (c) 2005, Herve Drolon, FreeImage Team
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __RAW_H
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#define __RAW_H
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/**
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@file raw.h
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@brief Implementation of operations for raw encoding (RAW)
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The functions in RAW.C have for goal to realize the operation of raw encoding linked
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with the corresponding mode switch.
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*/
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/** @defgroup RAW RAW - Implementation of operations for raw encoding */
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/*@{*/
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/**
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RAW encoding operations
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*/
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typedef struct opj_raw {
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/** temporary buffer where bits are coded or decoded */
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unsigned char c;
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/** number of bits already read or free to write */
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unsigned int ct;
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/** maximum length to decode */
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unsigned int lenmax;
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/** length decoded */
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unsigned int len;
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/** pointer to the current position in the buffer */
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unsigned char *bp;
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/** pointer to the start of the buffer */
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unsigned char *start;
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/** pointer to the end of the buffer */
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unsigned char *end;
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} opj_raw_t;
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/** @name Exported functions */
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/*@{*/
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/* ----------------------------------------------------------------------- */
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/**
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Create a new RAW handle
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@return Returns a new RAW handle if successful, returns NULL otherwise
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*/
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opj_raw_t* raw_create(void);
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/**
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Destroy a previously created RAW handle
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@param raw RAW handle to destroy
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*/
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void raw_destroy(opj_raw_t *raw);
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/**
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Return the number of bytes written/read since initialisation
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@param raw RAW handle to destroy
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@return Returns the number of bytes already encoded
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*/
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int raw_numbytes(opj_raw_t *raw);
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/**
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Initialize the decoder
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@param raw RAW handle
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@param bp Pointer to the start of the buffer from which the bytes will be read
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@param len Length of the input buffer
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*/
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void raw_init_dec(opj_raw_t *raw, unsigned char *bp, int len);
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/**
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Decode a symbol using raw-decoder. Cfr p.506 TAUBMAN
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@param raw RAW handle
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@return Returns the decoded symbol (0 or 1)
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*/
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int raw_decode(opj_raw_t *raw);
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/* ----------------------------------------------------------------------- */
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/*@}*/
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/*@}*/
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#endif /* __RAW_H */
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