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/* stats1a.h -- statistics for the the LZO1A algorithm
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This file is part of the LZO real-time data compression library.
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Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer
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All Rights Reserved.
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The LZO library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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The LZO library 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the LZO library; see the file COPYING.
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If not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Markus F.X.J. Oberhumer
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<markus@oberhumer.com>
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http://www.oberhumer.com/opensource/lzo/
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*/
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/* WARNING: this file should *not* be used by applications. It is
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part of the implementation of the LZO package and is subject
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to change.
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*/
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#ifndef __LZO_STATS1A_H
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#define __LZO_STATS1A_H 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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/***********************************************************************
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// collect statistical information when compressing
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// used for finetuning, view with a debugger
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************************************************************************/
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#if (LZO_COLLECT_STATS)
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# define LZO_STATS(expr) expr
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#else
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# define LZO_STATS(expr) ((void) 0)
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#endif
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/***********************************************************************
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//
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************************************************************************/
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typedef struct {
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/* configuration */
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unsigned rbits;
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unsigned clevel;
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/* internal configuration */
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unsigned dbits;
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unsigned lbits;
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/* constants */
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unsigned min_match_short;
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unsigned max_match_short;
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unsigned min_match_long;
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unsigned max_match_long;
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unsigned min_offset;
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unsigned max_offset;
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unsigned r0min;
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unsigned r0fast;
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unsigned r0max;
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/* counts */
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long short_matches;
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long long_matches;
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long r1_matches;
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long lit_runs;
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long lit_runs_after_long_match;
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long r0short_runs;
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long r0fast_runs;
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long r0long_runs;
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/* */
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long lit_run[RSIZE];
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long lit_run_after_long_match[RSIZE];
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long short_match[MAX_MATCH_SHORT + 1];
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long long_match[MAX_MATCH_LONG + 1];
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long marker[256];
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/* these could prove useful for further optimizations */
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long short_match_offset_osize[MAX_MATCH_SHORT + 1];
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long short_match_offset_256[MAX_MATCH_SHORT + 1];
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long short_match_offset_1024[MAX_MATCH_SHORT + 1];
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long matches_out_of_range;
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long matches_out_of_range_2;
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long matches_out_of_range_4;
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long match_out_of_range[MAX_MATCH_SHORT + 1];
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/* */
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long in_len;
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long out_len;
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}
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lzo1a_stats_t;
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extern lzo1a_stats_t *lzo1a_stats;
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* already included */
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/*
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vi:ts=4:et
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*/
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