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/*
* explode.h -- header file for PKWARE data decompression library
* used by mpq-tools.
*
* Copyright (C) 2003 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 LIBMPQ_PKZIP_EXP_BUFFER_SIZE 12596 /* Size of decompress buffer */
#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
/* Compression structure (size: 12596 bytes on x86-32) */
typedef struct {
unsigned long offs0000; /* 0000 */
unsigned long cmp_type; /* 0004 - Compression type (LIBMPQ_PZIP_CMP_BINARY or LIBMPQ_PKZIP_CMP_ASCII) */
unsigned long out_pos; /* 0008 - Position in output buffer */
unsigned long dsize_bits; /* 000C - Dict size (4, 5, 6 for 0x400, 0x800, 0x1000) */
unsigned long dsize_mask; /* 0010 - Dict size bitmask (0x0F, 0x1F, 0x3F for 0x400, 0x800, 0x1000) */
unsigned long bit_buf; /* 0014 - 16-bit buffer for processing input data */
unsigned long extra_bits; /* 0018 - Number of extra (above 8) bits in bit buffer */
unsigned int in_pos; /* 001C - Position in in_buf */
unsigned long in_bytes; /* 0020 - Number of bytes in input buffer */
void *param; /* 0024 - Custom parameter */
unsigned int (*read_buf)(char *buf, unsigned int *size, void *param); /* 0028 */
void (*write_buf)(char *buf, unsigned int *size, void *param); /* 002C */
unsigned char out_buf[0x2000]; /* 0030 - Output circle buffer. Starting position is 0x1000 */
unsigned char offs_2030[0x204]; /* 2030 - ??? */
unsigned char in_buf[0x800]; /* 2234 - Buffer for data to be decompressed */
unsigned char pos1[0x100]; /* 2A34 - Positions in buffers */
unsigned char pos2[0x100]; /* 2B34 - Positions in buffers */
unsigned char offs_2c34[0x100]; /* 2C34 - Buffer for */
unsigned char offs_2d34[0x100]; /* 2D34 - Buffer for */
unsigned char offs_2e34[0x80]; /* 2EB4 - Buffer for */
unsigned char offs_2eb4[0x100]; /* 2EB4 - Buffer for */
unsigned char bits_asc[0x100]; /* 2FB4 - Buffer for */
unsigned char dist_bits[0x40]; /* 30B4 - Numbers of bytes to skip copied block length */
unsigned char slen_bits[0x10]; /* 30F4 - Numbers of bits for skip copied block length */
unsigned char clen_bits[0x10]; /* 3104 - Number of valid bits for copied block */
unsigned short len_base[0x10]; /* 3114 - Buffer for */
} pkzip_data_cmp;
// __attribute__ ((packed)) pkzip_data_cmp;
typedef struct {
char *in_buf; /* Pointer to input data buffer */
unsigned int in_pos; /* Current offset in input data buffer */
int in_bytes; /* Number of bytes in the input buffer */
char *out_buf; /* Pointer to output data buffer */
unsigned int out_pos; /* Position in the output buffer */
int max_out; /* Maximum number of bytes in the output buffer */
} pkzip_data;
extern unsigned int libmpq_pkzip_explode(
unsigned int (*read_buf)(char *buf, unsigned int *size, void *param),
void (*write_buf)(char *buf, unsigned int *size, void *param),
char *work_buf,
void *param
);
#endif /* _EXPLODE_H */
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