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/* stats1a.h -- statistics for the the LZO1A algorithm
This file is part of the LZO real-time data compression library.
Copyright (C) 1996-2017 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
The LZO library 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.
The LZO library 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 the LZO library; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Markus F.X.J. Oberhumer
<markus@oberhumer.com>
http://www.oberhumer.com/opensource/lzo/
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the LZO package and is subject
to change.
*/
#ifndef __LZO_STATS1A_H
#define __LZO_STATS1A_H 1
#ifdef __cplusplus
extern "C" {
#endif
/***********************************************************************
// collect statistical information when compressing
// used for finetuning, view with a debugger
************************************************************************/
#if (LZO_COLLECT_STATS)
# define LZO_STATS(expr) expr
#else
# define LZO_STATS(expr) ((void) 0)
#endif
/***********************************************************************
//
************************************************************************/
typedef struct {
/* configuration */
unsigned rbits;
unsigned clevel;
/* internal configuration */
unsigned dbits;
unsigned lbits;
/* constants */
unsigned min_match_short;
unsigned max_match_short;
unsigned min_match_long;
unsigned max_match_long;
unsigned min_offset;
unsigned max_offset;
unsigned r0min;
unsigned r0fast;
unsigned r0max;
/* counts */
long short_matches;
long long_matches;
long r1_matches;
long lit_runs;
long lit_runs_after_long_match;
long r0short_runs;
long r0fast_runs;
long r0long_runs;
/* */
long lit_run[RSIZE];
long lit_run_after_long_match[RSIZE];
long short_match[MAX_MATCH_SHORT + 1];
long long_match[MAX_MATCH_LONG + 1];
long marker[256];
/* these could prove useful for further optimizations */
long short_match_offset_osize[MAX_MATCH_SHORT + 1];
long short_match_offset_256[MAX_MATCH_SHORT + 1];
long short_match_offset_1024[MAX_MATCH_SHORT + 1];
long matches_out_of_range;
long matches_out_of_range_2;
long matches_out_of_range_4;
long match_out_of_range[MAX_MATCH_SHORT + 1];
/* */
long in_len;
long out_len;
}
lzo1a_stats_t;
extern lzo1a_stats_t *lzo1a_stats;
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* already included */
/* vim:set ts=4 sw=4 et: */
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