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| 4758 | right-hear | 1 | /* |
| 2 | * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium |
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| 3 | * Copyright (c) 2002-2007, Professor Benoit Macq |
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| 4 | * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe |
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| 5 | * Copyright (c) 2005, Herve Drolon, FreeImage Team |
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| 6 | * All rights reserved. |
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| 7 | * |
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| 8 | * Redistribution and use in source and binary forms, with or without |
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| 9 | * modification, are permitted provided that the following conditions |
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| 10 | * are met: |
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| 11 | * 1. Redistributions of source code must retain the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer. |
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 14 | * notice, this list of conditions and the following disclaimer in the |
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| 15 | * documentation and/or other materials provided with the distribution. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' |
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| 18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 21 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 22 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 23 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 24 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 25 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 26 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 27 | * POSSIBILITY OF SUCH DAMAGE. |
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| 28 | */ |
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| 29 | |||
| 30 | #ifndef __RAW_H |
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| 31 | #define __RAW_H |
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| 32 | /** |
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| 33 | @file raw.h |
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| 34 | @brief Implementation of operations for raw encoding (RAW) |
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| 35 | |||
| 36 | The functions in RAW.C have for goal to realize the operation of raw encoding linked |
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| 37 | with the corresponding mode switch. |
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| 38 | */ |
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| 39 | |||
| 40 | /** @defgroup RAW RAW - Implementation of operations for raw encoding */ |
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| 41 | /*@{*/ |
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| 42 | |||
| 43 | /** |
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| 44 | RAW encoding operations |
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| 45 | */ |
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| 46 | typedef struct opj_raw { |
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| 47 | /** temporary buffer where bits are coded or decoded */ |
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| 48 | unsigned char c; |
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| 49 | /** number of bits already read or free to write */ |
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| 50 | unsigned int ct; |
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| 51 | /** maximum length to decode */ |
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| 52 | unsigned int lenmax; |
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| 53 | /** length decoded */ |
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| 54 | unsigned int len; |
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| 55 | /** pointer to the current position in the buffer */ |
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| 56 | unsigned char *bp; |
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| 57 | /** pointer to the start of the buffer */ |
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| 58 | unsigned char *start; |
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| 59 | /** pointer to the end of the buffer */ |
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| 60 | unsigned char *end; |
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| 61 | } opj_raw_t; |
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| 62 | |||
| 63 | /** @name Exported functions */ |
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| 64 | /*@{*/ |
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| 65 | /* ----------------------------------------------------------------------- */ |
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| 66 | /** |
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| 67 | Create a new RAW handle |
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| 68 | @return Returns a new RAW handle if successful, returns NULL otherwise |
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| 69 | */ |
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| 70 | opj_raw_t* raw_create(void); |
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| 71 | /** |
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| 72 | Destroy a previously created RAW handle |
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| 73 | @param raw RAW handle to destroy |
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| 74 | */ |
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| 75 | void raw_destroy(opj_raw_t *raw); |
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| 76 | /** |
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| 77 | Return the number of bytes written/read since initialisation |
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| 78 | @param raw RAW handle to destroy |
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| 79 | @return Returns the number of bytes already encoded |
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| 80 | */ |
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| 81 | int raw_numbytes(opj_raw_t *raw); |
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| 82 | /** |
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| 83 | Initialize the decoder |
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| 84 | @param raw RAW handle |
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| 85 | @param bp Pointer to the start of the buffer from which the bytes will be read |
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| 86 | @param len Length of the input buffer |
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| 87 | */ |
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| 88 | void raw_init_dec(opj_raw_t *raw, unsigned char *bp, int len); |
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| 89 | /** |
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| 90 | Decode a symbol using raw-decoder. Cfr p.506 TAUBMAN |
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| 91 | @param raw RAW handle |
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| 92 | @return Returns the decoded symbol (0 or 1) |
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| 93 | */ |
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| 94 | int raw_decode(opj_raw_t *raw); |
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| 95 | /* ----------------------------------------------------------------------- */ |
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| 96 | /*@}*/ |
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| 97 | |||
| 98 | /*@}*/ |
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| 99 | |||
| 100 | #endif /* __RAW_H */ |