OpenJPEG 1.5.1
bio.h
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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
40
43
47typedef struct opj_bio {
49 unsigned char *start;
51 unsigned char *end;
53 unsigned char *bp;
55 unsigned int buf;
57 int ct;
59
62/* ----------------------------------------------------------------------- */
72void bio_destroy(opj_bio_t *bio);
78int bio_numbytes(opj_bio_t *bio);
85void bio_init_enc(opj_bio_t *bio, unsigned char *bp, int len);
92void bio_init_dec(opj_bio_t *bio, unsigned char *bp, int len);
99void bio_write(opj_bio_t *bio, int v, int n);
106int bio_read(opj_bio_t *bio, int n);
112int bio_flush(opj_bio_t *bio);
118int bio_inalign(opj_bio_t *bio);
119/* ----------------------------------------------------------------------- */
121
123
124#endif /* __BIO_H */
125
opj_bio_t * bio_create(void)
Create a new BIO handle.
Definition bio.c:117
void bio_write(opj_bio_t *bio, int v, int n)
Write bits.
Definition bio.c:148
int bio_inalign(opj_bio_t *bio)
Passes the ending bits (coming from flushing)
Definition bio.c:178
int bio_numbytes(opj_bio_t *bio)
Number of bytes written.
Definition bio.c:128
void bio_destroy(opj_bio_t *bio)
Destroy a previously created BIO handle.
Definition bio.c:122
int bio_read(opj_bio_t *bio, int n)
Read bits.
Definition bio.c:155
void bio_init_enc(opj_bio_t *bio, unsigned char *bp, int len)
Init encoder.
Definition bio.c:132
void bio_init_dec(opj_bio_t *bio, unsigned char *bp, int len)
Init decoder.
Definition bio.c:140
struct opj_bio opj_bio_t
Individual bit input-output stream (BIO)
int bio_flush(opj_bio_t *bio)
Flush bits.
Definition bio.c:164
Individual bit input-output stream (BIO)
Definition bio.h:47
int ct
coder : number of bits free to write.
Definition bio.h:57
unsigned char * start
pointer to the start of the buffer
Definition bio.h:49
unsigned int buf
temporary place where each byte is read or written
Definition bio.h:55
unsigned char * end
pointer to the end of the buffer
Definition bio.h:51
unsigned char * bp
pointer to the present position in the buffer
Definition bio.h:53