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Diffstat (limited to 'dep/include/libmpq/explode.h')
| -rw-r--r-- | dep/include/libmpq/explode.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/dep/include/libmpq/explode.h b/dep/include/libmpq/explode.h new file mode 100644 index 00000000000..84bbde77bee --- /dev/null +++ b/dep/include/libmpq/explode.h @@ -0,0 +1,94 @@ +/* + * 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 + +#ifdef _MSC_VER +#pragma pack(push,1) +#endif + +/* 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. */ +#ifdef _MSC_VER +} pkzip_cmp_s; +#pragma pack(pop) +#else +} __attribute__ ((packed)) pkzip_cmp_s; +#endif + +/* 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 */ |