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65 lines
2 KiB
C
65 lines
2 KiB
C
/*
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File lz_nonslide.h, part of lzxcomp library
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Copyright (C) 2002 Matthew T. Russotto
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; version 2.1 only
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#if defined(_WIN32) || defined(__APPLE__)
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typedef unsigned char u_char;
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#endif
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typedef struct lz_info lz_info;
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typedef int (*get_chars_t)(lz_info *lzi, int n, u_char *buf);
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typedef int (*output_match_t)(lz_info *lzi, int match_pos, int match_len);
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typedef void (*output_literal_t)(lz_info *lzi, u_char ch);
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struct lz_info
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{
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int wsize; /* window size in bytes */
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int max_match; /* size of longest match in bytes */
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int min_match;
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u_char *block_buf;
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u_char *block_bufe;
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int block_buf_size;
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int chars_in_buf;
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int cur_loc; /* location within stream */
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int block_loc;
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int frame_size;
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int max_dist;
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u_char **prevtab;
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int *lentab;
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short eofcount;
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short stop;
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short analysis_valid;
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get_chars_t get_chars;
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output_match_t output_match;
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output_literal_t output_literal;
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void *user_data;
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};
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void lz_init(lz_info *lzi, int wsize, int max_dist,
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int max_match, int min_match,
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int frame_size,
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get_chars_t get_chars,
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output_match_t output_match,
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output_literal_t output_literal, void *user_data);
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void lz_release(lz_info *lzi);
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void lz_reset(lz_info *lzi);
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void lz_stop_compressing(lz_info *lzi);
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int lz_left_to_process(lz_info *lzi); /* returns # chars read in but unprocessed */
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int lz_compress(lz_info *lzi, int nchars);
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