corrade-vassal – Blame information for rev 1

Subversion Repositories:
Rev:
Rev Author Line No. Line
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) 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 #include "opj_includes.h"
31  
32 /*
33 ==========================================================
34 local functions
35 ==========================================================
36 */
37  
38  
39 /*
40 ==========================================================
41 RAW encoding interface
42 ==========================================================
43 */
44  
45 opj_raw_t* raw_create(void) {
46 opj_raw_t *raw = (opj_raw_t*)opj_malloc(sizeof(opj_raw_t));
47 return raw;
48 }
49  
50 void raw_destroy(opj_raw_t *raw) {
51 if(raw) {
52 opj_free(raw);
53 }
54 }
55  
56 int raw_numbytes(opj_raw_t *raw) {
57 return raw->bp - raw->start;
58 }
59  
60 void raw_init_dec(opj_raw_t *raw, unsigned char *bp, int len) {
61 raw->start = bp;
62 raw->lenmax = len;
63 raw->len = 0;
64 raw->c = 0;
65 raw->ct = 0;
66 }
67  
68 int raw_decode(opj_raw_t *raw) {
69 int d;
70 if (raw->ct == 0) {
71 raw->ct = 8;
72 if (raw->len == raw->lenmax) {
73 raw->c = 0xff;
74 } else {
75 if (raw->c == 0xff) {
76 raw->ct = 7;
77 }
78 raw->c = *(raw->start + raw->len);
79 raw->len++;
80 }
81 }
82 raw->ct--;
83 d = (raw->c >> raw->ct) & 0x01;
84  
85 return d;
86 }
87