diff options
Diffstat (limited to '')
-rw-r--r-- | libraries/openjpeg-libsl/libopenjpeg/raw.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/libraries/openjpeg-libsl/libopenjpeg/raw.c b/libraries/openjpeg-libsl/libopenjpeg/raw.c new file mode 100644 index 0000000..808a468 --- /dev/null +++ b/libraries/openjpeg-libsl/libopenjpeg/raw.c | |||
@@ -0,0 +1,87 @@ | |||
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() { | ||
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 | |||