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Diffstat (limited to 'rbutil/rbutilqt/mspack/mszip.h')
| -rw-r--r-- | rbutil/rbutilqt/mspack/mszip.h | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/rbutil/rbutilqt/mspack/mszip.h b/rbutil/rbutilqt/mspack/mszip.h deleted file mode 100644 index 2cd608234e..0000000000 --- a/rbutil/rbutilqt/mspack/mszip.h +++ /dev/null @@ -1,126 +0,0 @@ -/* This file is part of libmspack. - * (C) 2003-2004 Stuart Caie. - * - * The deflate method was created by Phil Katz. MSZIP is equivalent to the - * deflate method. - * - * libmspack is free software; you can redistribute it and/or modify it under - * the terms of the GNU Lesser General Public License (LGPL) version 2.1 - * - * For further details, see the file COPYING.LIB distributed with libmspack - */ - -#ifndef MSPACK_MSZIP_H -#define MSPACK_MSZIP_H 1 - -#ifdef __cplusplus -extern "C" { -#endif - -/* MSZIP (deflate) compression / (inflate) decompression definitions */ - -#define MSZIP_FRAME_SIZE (32768) /* size of LZ history window */ -#define MSZIP_LITERAL_MAXSYMBOLS (288) /* literal/length huffman tree */ -#define MSZIP_LITERAL_TABLEBITS (9) -#define MSZIP_DISTANCE_MAXSYMBOLS (32) /* distance huffman tree */ -#define MSZIP_DISTANCE_TABLEBITS (6) - -/* if there are less direct lookup entries than symbols, the longer - * code pointers will be <= maxsymbols. This must not happen, or we - * will decode entries badly */ -#if (1 << MSZIP_LITERAL_TABLEBITS) < (MSZIP_LITERAL_MAXSYMBOLS * 2) -# define MSZIP_LITERAL_TABLESIZE (MSZIP_LITERAL_MAXSYMBOLS * 4) -#else -# define MSZIP_LITERAL_TABLESIZE ((1 << MSZIP_LITERAL_TABLEBITS) + \ - (MSZIP_LITERAL_MAXSYMBOLS * 2)) -#endif - -#if (1 << MSZIP_DISTANCE_TABLEBITS) < (MSZIP_DISTANCE_MAXSYMBOLS * 2) -# define MSZIP_DISTANCE_TABLESIZE (MSZIP_DISTANCE_MAXSYMBOLS * 4) -#else -# define MSZIP_DISTANCE_TABLESIZE ((1 << MSZIP_DISTANCE_TABLEBITS) + \ - (MSZIP_DISTANCE_MAXSYMBOLS * 2)) -#endif - -struct mszipd_stream { - struct mspack_system *sys; /* I/O routines */ - struct mspack_file *input; /* input file handle */ - struct mspack_file *output; /* output file handle */ - unsigned int window_posn; /* offset within window */ - - /* inflate() will call this whenever the window should be emptied. */ - int (*flush_window)(struct mszipd_stream *, unsigned int); - - int error, repair_mode, bytes_output; - - /* I/O buffering */ - unsigned char *inbuf, *i_ptr, *i_end, *o_ptr, *o_end, input_end; - unsigned int bit_buffer, bits_left, inbuf_size; - - - /* huffman code lengths */ - unsigned char LITERAL_len[MSZIP_LITERAL_MAXSYMBOLS]; - unsigned char DISTANCE_len[MSZIP_DISTANCE_MAXSYMBOLS]; - - /* huffman decoding tables */ - unsigned short LITERAL_table [MSZIP_LITERAL_TABLESIZE]; - unsigned short DISTANCE_table[MSZIP_DISTANCE_TABLESIZE]; - - /* 32kb history window */ - unsigned char window[MSZIP_FRAME_SIZE]; -}; - -/* allocates MS-ZIP decompression stream for decoding the given stream. - * - * - uses system->alloc() to allocate memory - * - * - returns NULL if not enough memory - * - * - input_buffer_size is how many bytes to use as an input bitstream buffer - * - * - if repair_mode is non-zero, errors in decompression will be skipped - * and 'holes' left will be filled with zero bytes. This allows at least - * a partial recovery of erroneous data. - */ -extern struct mszipd_stream *mszipd_init(struct mspack_system *system, - struct mspack_file *input, - struct mspack_file *output, - int input_buffer_size, - int repair_mode); - -/* decompresses, or decompresses more of, an MS-ZIP stream. - * - * - out_bytes of data will be decompressed and the function will return - * with an MSPACK_ERR_OK return code. - * - * - decompressing will stop as soon as out_bytes is reached. if the true - * amount of bytes decoded spills over that amount, they will be kept for - * a later invocation of mszipd_decompress(). - * - * - the output bytes will be passed to the system->write() function given in - * mszipd_init(), using the output file handle given in mszipd_init(). More - * than one call may be made to system->write() - * - * - MS-ZIP will read input bytes as necessary using the system->read() - * function given in mszipd_init(), using the input file handle given in - * mszipd_init(). This will continue until system->read() returns 0 bytes, - * or an error. - */ -extern int mszipd_decompress(struct mszipd_stream *zip, off_t out_bytes); - -/* decompresses an entire MS-ZIP stream in a KWAJ file. Acts very much - * like mszipd_decompress(), but doesn't take an out_bytes parameter - */ -extern int mszipd_decompress_kwaj(struct mszipd_stream *zip); - -/* frees all stream associated with an MS-ZIP data stream - * - * - calls system->free() using the system pointer given in mszipd_init() - */ -void mszipd_free(struct mszipd_stream *zip); - -#ifdef __cplusplus -} -#endif - -#endif |