1 /* stats1a.h -- statistics for the the LZO1A algorithm 2 3 This file is part of the LZO real-time data compression library. 4 5 Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer 6 All Rights Reserved. 7 8 The LZO library is free software; you can redistribute it and/or 9 modify it under the terms of the GNU General Public License as 10 published by the Free Software Foundation; either version 2 of 11 the License, or (at your option) any later version. 12 13 The LZO library is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with the LZO library; see the file COPYING. 20 If not, write to the Free Software Foundation, Inc., 21 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 22 23 Markus F.X.J. Oberhumer 24 <markus@oberhumer.com> 25 http://www.oberhumer.com/opensource/lzo/ 26 */ 27 28 29 /* WARNING: this file should *not* be used by applications. It is 30 part of the implementation of the LZO package and is subject 31 to change. 32 */ 33 34 35 #ifndef __LZO_STATS1A_H 36 #define __LZO_STATS1A_H 1 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 43 44 /*********************************************************************** 45 // collect statistical information when compressing 46 // used for finetuning, view with a debugger 47 ************************************************************************/ 48 49 #if (LZO_COLLECT_STATS) 50 # define LZO_STATS(expr) expr 51 #else 52 # define LZO_STATS(expr) ((void) 0) 53 #endif 54 55 56 /*********************************************************************** 57 // 58 ************************************************************************/ 59 60 typedef struct { 61 62 /* configuration */ 63 unsigned rbits; 64 unsigned clevel; 65 66 /* internal configuration */ 67 unsigned dbits; 68 unsigned lbits; 69 70 /* constants */ 71 unsigned min_match_short; 72 unsigned max_match_short; 73 unsigned min_match_long; 74 unsigned max_match_long; 75 unsigned min_offset; 76 unsigned max_offset; 77 unsigned r0min; 78 unsigned r0fast; 79 unsigned r0max; 80 81 /* counts */ 82 long short_matches; 83 long long_matches; 84 long r1_matches; 85 long lit_runs; 86 long lit_runs_after_long_match; 87 long r0short_runs; 88 long r0fast_runs; 89 long r0long_runs; 90 91 /* */ 92 long lit_run[RSIZE]; 93 long lit_run_after_long_match[RSIZE]; 94 long short_match[MAX_MATCH_SHORT + 1]; 95 long long_match[MAX_MATCH_LONG + 1]; 96 long marker[256]; 97 98 /* these could prove useful for further optimizations */ 99 long short_match_offset_osize[MAX_MATCH_SHORT + 1]; 100 long short_match_offset_256[MAX_MATCH_SHORT + 1]; 101 long short_match_offset_1024[MAX_MATCH_SHORT + 1]; 102 long matches_out_of_range; 103 long matches_out_of_range_2; 104 long matches_out_of_range_4; 105 long match_out_of_range[MAX_MATCH_SHORT + 1]; 106 107 /* */ 108 long in_len; 109 long out_len; 110 } 111 lzo1a_stats_t; 112 113 extern lzo1a_stats_t *lzo1a_stats; 114 115 116 117 #ifdef __cplusplus 118 } /* extern "C" */ 119 #endif 120 121 #endif /* already included */ 122 123 /* 124 vi:ts=4:et 125 */ 126