corrade-vassal – Blame information for rev 1

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1 vero 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) 2001-2003, David Janssens
5 * Copyright (c) 2002-2003, Yannick Verschueren
6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31  
32 #ifndef __BIO_H
33 #define __BIO_H
34 /**
35 @file bio.h
36 @brief Implementation of an individual bit input-output (BIO)
37  
38 The functions in BIO.C have for goal to realize an individual bit input - output.
39 */
40  
41 /** @defgroup BIO BIO - Individual bit input-output stream */
42 /*@{*/
43  
44 /**
45 Individual bit input-output stream (BIO)
46 */
47 typedef struct opj_bio {
48 /** pointer to the start of the buffer */
49 unsigned char *start;
50 /** pointer to the end of the buffer */
51 unsigned char *end;
52 /** pointer to the present position in the buffer */
53 unsigned char *bp;
54 /** temporary place where each byte is read or written */
55 unsigned int buf;
56 /** coder : number of bits free to write. decoder : number of bits read */
57 int ct;
58 } opj_bio_t;
59  
60 /** @name Exported functions */
61 /*@{*/
62 /* ----------------------------------------------------------------------- */
63 /**
64 Create a new BIO handle
65 @return Returns a new BIO handle if successful, returns NULL otherwise
66 */
67 opj_bio_t* bio_create(void);
68 /**
69 Destroy a previously created BIO handle
70 @param bio BIO handle to destroy
71 */
72 void bio_destroy(opj_bio_t *bio);
73 /**
74 Number of bytes written.
75 @param bio BIO handle
76 @return Returns the number of bytes written
77 */
78 int bio_numbytes(opj_bio_t *bio);
79 /**
80 Init encoder
81 @param bio BIO handle
82 @param bp Output buffer
83 @param len Output buffer length
84 */
85 void bio_init_enc(opj_bio_t *bio, unsigned char *bp, int len);
86 /**
87 Init decoder
88 @param bio BIO handle
89 @param bp Input buffer
90 @param len Input buffer length
91 */
92 void bio_init_dec(opj_bio_t *bio, unsigned char *bp, int len);
93 /**
94 Write bits
95 @param bio BIO handle
96 @param v Value of bits
97 @param n Number of bits to write
98 */
99 void bio_write(opj_bio_t *bio, int v, int n);
100 /**
101 Read bits
102 @param bio BIO handle
103 @param n Number of bits to read
104 @return Returns the corresponding read number
105 */
106 int bio_read(opj_bio_t *bio, int n);
107 /**
108 Flush bits
109 @param bio BIO handle
110 @return Returns 1 if successful, returns 0 otherwise
111 */
112 int bio_flush(opj_bio_t *bio);
113 /**
114 Passes the ending bits (coming from flushing)
115 @param bio BIO handle
116 @return Returns 1 if successful, returns 0 otherwise
117 */
118 int bio_inalign(opj_bio_t *bio);
119 /* ----------------------------------------------------------------------- */
120 /*@}*/
121  
122 /*@}*/
123  
124 #endif /* __BIO_H */
125