Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
4680 | right-hear | 1 | /* |
2 | * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium |
||
3 | * Copyright (c) 2002-2007, Professor Benoit Macq |
||
4 | * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe |
||
5 | * Copyright (c) 2005, Herve Drolon, FreeImage Team |
||
6 | * All rights reserved. |
||
7 | * |
||
8 | * Redistribution and use in source and binary forms, with or without |
||
9 | * modification, are permitted provided that the following conditions |
||
10 | * are met: |
||
11 | * 1. Redistributions of source code must retain the above copyright |
||
12 | * notice, this list of conditions and the following disclaimer. |
||
13 | * 2. Redistributions in binary form must reproduce the above copyright |
||
14 | * notice, this list of conditions and the following disclaimer in the |
||
15 | * documentation and/or other materials provided with the distribution. |
||
16 | * |
||
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' |
||
18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
||
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
||
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
||
21 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
||
22 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
||
23 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
||
24 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
||
25 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
||
26 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
||
27 | * POSSIBILITY OF SUCH DAMAGE. |
||
28 | */ |
||
29 | |||
30 | #ifndef __RAW_H |
||
31 | #define __RAW_H |
||
32 | /** |
||
33 | @file raw.h |
||
34 | @brief Implementation of operations for raw encoding (RAW) |
||
35 | |||
36 | The functions in RAW.C have for goal to realize the operation of raw encoding linked |
||
37 | with the corresponding mode switch. |
||
38 | */ |
||
39 | |||
40 | /** @defgroup RAW RAW - Implementation of operations for raw encoding */ |
||
41 | /*@{*/ |
||
42 | |||
43 | /** |
||
44 | RAW encoding operations |
||
45 | */ |
||
46 | typedef struct opj_raw { |
||
47 | /** temporary buffer where bits are coded or decoded */ |
||
48 | unsigned char c; |
||
49 | /** number of bits already read or free to write */ |
||
50 | unsigned int ct; |
||
51 | /** maximum length to decode */ |
||
52 | unsigned int lenmax; |
||
53 | /** length decoded */ |
||
54 | unsigned int len; |
||
55 | /** pointer to the current position in the buffer */ |
||
56 | unsigned char *bp; |
||
57 | /** pointer to the start of the buffer */ |
||
58 | unsigned char *start; |
||
59 | /** pointer to the end of the buffer */ |
||
60 | unsigned char *end; |
||
61 | } opj_raw_t; |
||
62 | |||
63 | /** @name Exported functions */ |
||
64 | /*@{*/ |
||
65 | /* ----------------------------------------------------------------------- */ |
||
66 | /** |
||
67 | Create a new RAW handle |
||
68 | @return Returns a new RAW handle if successful, returns NULL otherwise |
||
69 | */ |
||
70 | opj_raw_t* raw_create(void); |
||
71 | /** |
||
72 | Destroy a previously created RAW handle |
||
73 | @param raw RAW handle to destroy |
||
74 | */ |
||
75 | void raw_destroy(opj_raw_t *raw); |
||
76 | /** |
||
77 | Return the number of bytes written/read since initialisation |
||
78 | @param raw RAW handle to destroy |
||
79 | @return Returns the number of bytes already encoded |
||
80 | */ |
||
81 | int raw_numbytes(opj_raw_t *raw); |
||
82 | /** |
||
83 | Initialize the decoder |
||
84 | @param raw RAW handle |
||
85 | @param bp Pointer to the start of the buffer from which the bytes will be read |
||
86 | @param len Length of the input buffer |
||
87 | */ |
||
88 | void raw_init_dec(opj_raw_t *raw, unsigned char *bp, int len); |
||
89 | /** |
||
90 | Decode a symbol using raw-decoder. Cfr p.506 TAUBMAN |
||
91 | @param raw RAW handle |
||
92 | @return Returns the decoded symbol (0 or 1) |
||
93 | */ |
||
94 | int raw_decode(opj_raw_t *raw); |
||
95 | /* ----------------------------------------------------------------------- */ |
||
96 | /*@}*/ |
||
97 | |||
98 | /*@}*/ |
||
99 | |||
100 | #endif /* __RAW_H */ |