1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/*
* explode.h -- header file for pkware data decompression library
* used by mpq-tools.
*
* Copyright (c) 2003-2008 Maik Broemme <mbroemme@plusserver.de>
*
* This source was adepted from the C++ version of pklib.h included
* in stormlib. The C++ version belongs to the following authors:
*
* Ladislav Zezula <ladik@zezula.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _EXPLODE_H
#define _EXPLODE_H
/* define compression constants and return values. */
#define LIBMPQ_PKZIP_CMP_BINARY 0 /* binary compression. */
#define LIBMPQ_PKZIP_CMP_ASCII 1 /* ascii compression. */
#define LIBMPQ_PKZIP_CMP_NO_ERROR 0
#define LIBMPQ_PKZIP_CMP_INV_DICTSIZE 1
#define LIBMPQ_PKZIP_CMP_INV_MODE 2
#define LIBMPQ_PKZIP_CMP_BAD_DATA 3
#define LIBMPQ_PKZIP_CMP_ABORT 4
#include "pack_begin.h"
/* compression structure. */
typedef struct {
uint32_t offs0000; /* 0000 - start. */
uint32_t cmp_type; /* 0004 - compression type (binary or ascii). */
uint32_t out_pos; /* 0008 - position in output buffer. */
uint32_t dsize_bits; /* 000C - dict size (4, 5, 6 for 0x400, 0x800, 0x1000). */
uint32_t dsize_mask; /* 0010 - dict size bitmask (0x0F, 0x1F, 0x3F for 0x400, 0x800, 0x1000). */
uint32_t bit_buf; /* 0014 - 16-bit buffer for processing input data. */
uint32_t extra_bits; /* 0018 - number of extra (above 8) bits in bit buffer. */
uint32_t in_pos; /* 001C - position in in_buf. */
uint32_t in_bytes; /* 0020 - number of bytes in input buffer. */
void *param; /* 0024 - custom parameter. */
uint32_t (*read_buf)(char *buf, uint32_t *size, void *param); /* 0028 offset.*/
void (*write_buf)(char *buf, uint32_t *size, void *param); /* 002C offset. */
uint8_t out_buf[0x2000]; /* 0030 - output circle buffer, starting position is 0x1000. */
uint8_t offs_2030[0x204]; /* 2030 - whats that? */
uint8_t in_buf[0x800]; /* 2234 - buffer for data to be decompressed. */
uint8_t pos1[0x100]; /* 2A34 - positions in buffers. */
uint8_t pos2[0x100]; /* 2B34 - positions in buffers. */
uint8_t offs_2c34[0x100]; /* 2C34 - buffer. */
uint8_t offs_2d34[0x100]; /* 2D34 - buffer. */
uint8_t offs_2e34[0x80]; /* 2EB4 - buffer. */
uint8_t offs_2eb4[0x100]; /* 2EB4 - buffer. */
uint8_t bits_asc[0x100]; /* 2FB4 - buffer. */
uint8_t dist_bits[0x40]; /* 30B4 - numbers of bytes to skip copied block length. */
uint8_t slen_bits[0x10]; /* 30F4 - numbers of bits for skip copied block length. */
uint8_t clen_bits[0x10]; /* 3104 - number of valid bits for copied block. */
uint16_t len_base[0x10]; /* 3114 - buffer. */
} PACK_STRUCT pkzip_cmp_s;
#include "pack_end.h"
/* data structure. */
typedef struct {
uint8_t *in_buf; /* pointer to input data buffer. */
uint32_t in_pos; /* current offset in input data buffer. */
int32_t in_bytes; /* number of bytes in the input buffer. */
uint8_t *out_buf; /* pointer to output data buffer. */
uint32_t out_pos; /* position in the output buffer. */
int32_t max_out; /* maximum number of bytes in the output buffer. */
} pkzip_data_s;
/* decompress the stream using pkzip compression. */
uint32_t libmpq__do_decompress_pkzip(
uint8_t *work_buf,
void *param
);
#endif /* _EXPLODE_H */
|
