diff options
Diffstat (limited to 'rbutil/rbutilqt/mspack/kwaj.h')
-rw-r--r-- | rbutil/rbutilqt/mspack/kwaj.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/rbutil/rbutilqt/mspack/kwaj.h b/rbutil/rbutilqt/mspack/kwaj.h new file mode 100644 index 0000000000..09673c0779 --- /dev/null +++ b/rbutil/rbutilqt/mspack/kwaj.h | |||
@@ -0,0 +1,118 @@ | |||
1 | /* This file is part of libmspack. | ||
2 | * (C) 2003-2010 Stuart Caie. | ||
3 | * | ||
4 | * libmspack is free software; you can redistribute it and/or modify it under | ||
5 | * the terms of the GNU Lesser General Public License (LGPL) version 2.1 | ||
6 | * | ||
7 | * For further details, see the file COPYING.LIB distributed with libmspack | ||
8 | */ | ||
9 | |||
10 | #ifndef MSPACK_KWAJ_H | ||
11 | #define MSPACK_KWAJ_H 1 | ||
12 | |||
13 | #include <lzss.h> | ||
14 | |||
15 | /* generic KWAJ definitions */ | ||
16 | #define kwajh_Signature1 (0x00) | ||
17 | #define kwajh_Signature2 (0x04) | ||
18 | #define kwajh_CompMethod (0x08) | ||
19 | #define kwajh_DataOffset (0x0a) | ||
20 | #define kwajh_Flags (0x0c) | ||
21 | #define kwajh_SIZEOF (0x0e) | ||
22 | |||
23 | /* KWAJ compression definitions */ | ||
24 | |||
25 | struct mskwaj_compressor_p { | ||
26 | struct mskwaj_compressor base; | ||
27 | struct mspack_system *system; | ||
28 | /* todo */ | ||
29 | int param[2]; /* !!! MATCH THIS TO NUM OF PARAMS IN MSPACK.H !!! */ | ||
30 | int error; | ||
31 | }; | ||
32 | |||
33 | /* KWAJ decompression definitions */ | ||
34 | |||
35 | struct mskwaj_decompressor_p { | ||
36 | struct mskwaj_decompressor base; | ||
37 | struct mspack_system *system; | ||
38 | int error; | ||
39 | }; | ||
40 | |||
41 | struct mskwajd_header_p { | ||
42 | struct mskwajd_header base; | ||
43 | struct mspack_file *fh; | ||
44 | }; | ||
45 | |||
46 | /* input buffer size during decompression - not worth parameterising IMHO */ | ||
47 | #define KWAJ_INPUT_SIZE (2048) | ||
48 | |||
49 | /* huffman codes that are 9 bits or less are decoded immediately */ | ||
50 | #define KWAJ_TABLEBITS (9) | ||
51 | |||
52 | /* number of codes in each huffman table */ | ||
53 | #define KWAJ_MATCHLEN1_SYMS (16) | ||
54 | #define KWAJ_MATCHLEN2_SYMS (16) | ||
55 | #define KWAJ_LITLEN_SYMS (32) | ||
56 | #define KWAJ_OFFSET_SYMS (64) | ||
57 | #define KWAJ_LITERAL_SYMS (256) | ||
58 | |||
59 | /* define decoding table sizes */ | ||
60 | #define KWAJ_TABLESIZE (1 << KWAJ_TABLEBITS) | ||
61 | #if KWAJ_TABLESIZE < (KWAJ_MATCHLEN1_SYMS * 2) | ||
62 | # define KWAJ_MATCHLEN1_TBLSIZE (KWAJ_MATCHLEN1_SYMS * 4) | ||
63 | #else | ||
64 | # define KWAJ_MATCHLEN1_TBLSIZE (KWAJ_TABLESIZE + (KWAJ_MATCHLEN1_SYMS * 2)) | ||
65 | #endif | ||
66 | #if KWAJ_TABLESIZE < (KWAJ_MATCHLEN2_SYMS * 2) | ||
67 | # define KWAJ_MATCHLEN2_TBLSIZE (KWAJ_MATCHLEN2_SYMS * 4) | ||
68 | #else | ||
69 | # define KWAJ_MATCHLEN2_TBLSIZE (KWAJ_TABLESIZE + (KWAJ_MATCHLEN2_SYMS * 2)) | ||
70 | #endif | ||
71 | #if KWAJ_TABLESIZE < (KWAJ_LITLEN_SYMS * 2) | ||
72 | # define KWAJ_LITLEN_TBLSIZE (KWAJ_LITLEN_SYMS * 4) | ||
73 | #else | ||
74 | # define KWAJ_LITLEN_TBLSIZE (KWAJ_TABLESIZE + (KWAJ_LITLEN_SYMS * 2)) | ||
75 | #endif | ||
76 | #if KWAJ_TABLESIZE < (KWAJ_OFFSET_SYMS * 2) | ||
77 | # define KWAJ_OFFSET_TBLSIZE (KWAJ_OFFSET_SYMS * 4) | ||
78 | #else | ||
79 | # define KWAJ_OFFSET_TBLSIZE (KWAJ_TABLESIZE + (KWAJ_OFFSET_SYMS * 2)) | ||
80 | #endif | ||
81 | #if KWAJ_TABLESIZE < (KWAJ_LITERAL_SYMS * 2) | ||
82 | # define KWAJ_LITERAL_TBLSIZE (KWAJ_LITERAL_SYMS * 4) | ||
83 | #else | ||
84 | # define KWAJ_LITERAL_TBLSIZE (KWAJ_TABLESIZE + (KWAJ_LITERAL_SYMS * 2)) | ||
85 | #endif | ||
86 | |||
87 | struct kwajd_stream { | ||
88 | /* I/O buffering */ | ||
89 | struct mspack_system *sys; | ||
90 | struct mspack_file *input; | ||
91 | struct mspack_file *output; | ||
92 | unsigned char *i_ptr, *i_end; | ||
93 | unsigned int bit_buffer, bits_left; | ||
94 | int input_end; | ||
95 | |||
96 | /* huffman code lengths */ | ||
97 | unsigned char MATCHLEN1_len [KWAJ_MATCHLEN1_SYMS]; | ||
98 | unsigned char MATCHLEN2_len [KWAJ_MATCHLEN2_SYMS]; | ||
99 | unsigned char LITLEN_len [KWAJ_LITLEN_SYMS]; | ||
100 | unsigned char OFFSET_len [KWAJ_OFFSET_SYMS]; | ||
101 | unsigned char LITERAL_len [KWAJ_LITERAL_SYMS]; | ||
102 | |||
103 | /* huffman decoding tables */ | ||
104 | unsigned short MATCHLEN1_table [KWAJ_MATCHLEN1_TBLSIZE]; | ||
105 | unsigned short MATCHLEN2_table [KWAJ_MATCHLEN2_TBLSIZE]; | ||
106 | unsigned short LITLEN_table [KWAJ_LITLEN_TBLSIZE]; | ||
107 | unsigned short OFFSET_table [KWAJ_OFFSET_TBLSIZE]; | ||
108 | unsigned short LITERAL_table [KWAJ_LITERAL_TBLSIZE]; | ||
109 | |||
110 | /* input buffer */ | ||
111 | unsigned char inbuf[KWAJ_INPUT_SIZE]; | ||
112 | |||
113 | /* history window */ | ||
114 | unsigned char window[LZSS_WINDOW_SIZE]; | ||
115 | }; | ||
116 | |||
117 | |||
118 | #endif | ||