1*01826a49SYabin Cui /* 2*01826a49SYabin Cui * Copyright (c) Meta Platforms, Inc. and affiliates. 3*01826a49SYabin Cui * All rights reserved. 4*01826a49SYabin Cui * 5*01826a49SYabin Cui * This source code is licensed under both the BSD-style license (found in the 6*01826a49SYabin Cui * LICENSE file in the root directory of this source tree) and the GPLv2 (found 7*01826a49SYabin Cui * in the COPYING file in the root directory of this source tree). 8*01826a49SYabin Cui * You may select, at your option, one of the above-listed licenses. 9*01826a49SYabin Cui */ 10*01826a49SYabin Cui 11*01826a49SYabin Cui #ifndef ZSTD_CLEVELS_H 12*01826a49SYabin Cui #define ZSTD_CLEVELS_H 13*01826a49SYabin Cui 14*01826a49SYabin Cui #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_compressionParameters */ 15*01826a49SYabin Cui #include "../zstd.h" 16*01826a49SYabin Cui 17*01826a49SYabin Cui /*-===== Pre-defined compression levels =====-*/ 18*01826a49SYabin Cui 19*01826a49SYabin Cui #define ZSTD_MAX_CLEVEL 22 20*01826a49SYabin Cui 21*01826a49SYabin Cui #ifdef __GNUC__ 22*01826a49SYabin Cui __attribute__((__unused__)) 23*01826a49SYabin Cui #endif 24*01826a49SYabin Cui 25*01826a49SYabin Cui static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEVEL+1] = { 26*01826a49SYabin Cui { /* "default" - for any srcSize > 256 KB */ 27*01826a49SYabin Cui /* W, C, H, S, L, TL, strat */ 28*01826a49SYabin Cui { 19, 12, 13, 1, 6, 1, ZSTD_fast }, /* base for negative levels */ 29*01826a49SYabin Cui { 19, 13, 14, 1, 7, 0, ZSTD_fast }, /* level 1 */ 30*01826a49SYabin Cui { 20, 15, 16, 1, 6, 0, ZSTD_fast }, /* level 2 */ 31*01826a49SYabin Cui { 21, 16, 17, 1, 5, 0, ZSTD_dfast }, /* level 3 */ 32*01826a49SYabin Cui { 21, 18, 18, 1, 5, 0, ZSTD_dfast }, /* level 4 */ 33*01826a49SYabin Cui { 21, 18, 19, 3, 5, 2, ZSTD_greedy }, /* level 5 */ 34*01826a49SYabin Cui { 21, 18, 19, 3, 5, 4, ZSTD_lazy }, /* level 6 */ 35*01826a49SYabin Cui { 21, 19, 20, 4, 5, 8, ZSTD_lazy }, /* level 7 */ 36*01826a49SYabin Cui { 21, 19, 20, 4, 5, 16, ZSTD_lazy2 }, /* level 8 */ 37*01826a49SYabin Cui { 22, 20, 21, 4, 5, 16, ZSTD_lazy2 }, /* level 9 */ 38*01826a49SYabin Cui { 22, 21, 22, 5, 5, 16, ZSTD_lazy2 }, /* level 10 */ 39*01826a49SYabin Cui { 22, 21, 22, 6, 5, 16, ZSTD_lazy2 }, /* level 11 */ 40*01826a49SYabin Cui { 22, 22, 23, 6, 5, 32, ZSTD_lazy2 }, /* level 12 */ 41*01826a49SYabin Cui { 22, 22, 22, 4, 5, 32, ZSTD_btlazy2 }, /* level 13 */ 42*01826a49SYabin Cui { 22, 22, 23, 5, 5, 32, ZSTD_btlazy2 }, /* level 14 */ 43*01826a49SYabin Cui { 22, 23, 23, 6, 5, 32, ZSTD_btlazy2 }, /* level 15 */ 44*01826a49SYabin Cui { 22, 22, 22, 5, 5, 48, ZSTD_btopt }, /* level 16 */ 45*01826a49SYabin Cui { 23, 23, 22, 5, 4, 64, ZSTD_btopt }, /* level 17 */ 46*01826a49SYabin Cui { 23, 23, 22, 6, 3, 64, ZSTD_btultra }, /* level 18 */ 47*01826a49SYabin Cui { 23, 24, 22, 7, 3,256, ZSTD_btultra2}, /* level 19 */ 48*01826a49SYabin Cui { 25, 25, 23, 7, 3,256, ZSTD_btultra2}, /* level 20 */ 49*01826a49SYabin Cui { 26, 26, 24, 7, 3,512, ZSTD_btultra2}, /* level 21 */ 50*01826a49SYabin Cui { 27, 27, 25, 9, 3,999, ZSTD_btultra2}, /* level 22 */ 51*01826a49SYabin Cui }, 52*01826a49SYabin Cui { /* for srcSize <= 256 KB */ 53*01826a49SYabin Cui /* W, C, H, S, L, T, strat */ 54*01826a49SYabin Cui { 18, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */ 55*01826a49SYabin Cui { 18, 13, 14, 1, 6, 0, ZSTD_fast }, /* level 1 */ 56*01826a49SYabin Cui { 18, 14, 14, 1, 5, 0, ZSTD_dfast }, /* level 2 */ 57*01826a49SYabin Cui { 18, 16, 16, 1, 4, 0, ZSTD_dfast }, /* level 3 */ 58*01826a49SYabin Cui { 18, 16, 17, 3, 5, 2, ZSTD_greedy }, /* level 4.*/ 59*01826a49SYabin Cui { 18, 17, 18, 5, 5, 2, ZSTD_greedy }, /* level 5.*/ 60*01826a49SYabin Cui { 18, 18, 19, 3, 5, 4, ZSTD_lazy }, /* level 6.*/ 61*01826a49SYabin Cui { 18, 18, 19, 4, 4, 4, ZSTD_lazy }, /* level 7 */ 62*01826a49SYabin Cui { 18, 18, 19, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */ 63*01826a49SYabin Cui { 18, 18, 19, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */ 64*01826a49SYabin Cui { 18, 18, 19, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */ 65*01826a49SYabin Cui { 18, 18, 19, 5, 4, 12, ZSTD_btlazy2 }, /* level 11.*/ 66*01826a49SYabin Cui { 18, 19, 19, 7, 4, 12, ZSTD_btlazy2 }, /* level 12.*/ 67*01826a49SYabin Cui { 18, 18, 19, 4, 4, 16, ZSTD_btopt }, /* level 13 */ 68*01826a49SYabin Cui { 18, 18, 19, 4, 3, 32, ZSTD_btopt }, /* level 14.*/ 69*01826a49SYabin Cui { 18, 18, 19, 6, 3,128, ZSTD_btopt }, /* level 15.*/ 70*01826a49SYabin Cui { 18, 19, 19, 6, 3,128, ZSTD_btultra }, /* level 16.*/ 71*01826a49SYabin Cui { 18, 19, 19, 8, 3,256, ZSTD_btultra }, /* level 17.*/ 72*01826a49SYabin Cui { 18, 19, 19, 6, 3,128, ZSTD_btultra2}, /* level 18.*/ 73*01826a49SYabin Cui { 18, 19, 19, 8, 3,256, ZSTD_btultra2}, /* level 19.*/ 74*01826a49SYabin Cui { 18, 19, 19, 10, 3,512, ZSTD_btultra2}, /* level 20.*/ 75*01826a49SYabin Cui { 18, 19, 19, 12, 3,512, ZSTD_btultra2}, /* level 21.*/ 76*01826a49SYabin Cui { 18, 19, 19, 13, 3,999, ZSTD_btultra2}, /* level 22.*/ 77*01826a49SYabin Cui }, 78*01826a49SYabin Cui { /* for srcSize <= 128 KB */ 79*01826a49SYabin Cui /* W, C, H, S, L, T, strat */ 80*01826a49SYabin Cui { 17, 12, 12, 1, 5, 1, ZSTD_fast }, /* base for negative levels */ 81*01826a49SYabin Cui { 17, 12, 13, 1, 6, 0, ZSTD_fast }, /* level 1 */ 82*01826a49SYabin Cui { 17, 13, 15, 1, 5, 0, ZSTD_fast }, /* level 2 */ 83*01826a49SYabin Cui { 17, 15, 16, 2, 5, 0, ZSTD_dfast }, /* level 3 */ 84*01826a49SYabin Cui { 17, 17, 17, 2, 4, 0, ZSTD_dfast }, /* level 4 */ 85*01826a49SYabin Cui { 17, 16, 17, 3, 4, 2, ZSTD_greedy }, /* level 5 */ 86*01826a49SYabin Cui { 17, 16, 17, 3, 4, 4, ZSTD_lazy }, /* level 6 */ 87*01826a49SYabin Cui { 17, 16, 17, 3, 4, 8, ZSTD_lazy2 }, /* level 7 */ 88*01826a49SYabin Cui { 17, 16, 17, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */ 89*01826a49SYabin Cui { 17, 16, 17, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */ 90*01826a49SYabin Cui { 17, 16, 17, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */ 91*01826a49SYabin Cui { 17, 17, 17, 5, 4, 8, ZSTD_btlazy2 }, /* level 11 */ 92*01826a49SYabin Cui { 17, 18, 17, 7, 4, 12, ZSTD_btlazy2 }, /* level 12 */ 93*01826a49SYabin Cui { 17, 18, 17, 3, 4, 12, ZSTD_btopt }, /* level 13.*/ 94*01826a49SYabin Cui { 17, 18, 17, 4, 3, 32, ZSTD_btopt }, /* level 14.*/ 95*01826a49SYabin Cui { 17, 18, 17, 6, 3,256, ZSTD_btopt }, /* level 15.*/ 96*01826a49SYabin Cui { 17, 18, 17, 6, 3,128, ZSTD_btultra }, /* level 16.*/ 97*01826a49SYabin Cui { 17, 18, 17, 8, 3,256, ZSTD_btultra }, /* level 17.*/ 98*01826a49SYabin Cui { 17, 18, 17, 10, 3,512, ZSTD_btultra }, /* level 18.*/ 99*01826a49SYabin Cui { 17, 18, 17, 5, 3,256, ZSTD_btultra2}, /* level 19.*/ 100*01826a49SYabin Cui { 17, 18, 17, 7, 3,512, ZSTD_btultra2}, /* level 20.*/ 101*01826a49SYabin Cui { 17, 18, 17, 9, 3,512, ZSTD_btultra2}, /* level 21.*/ 102*01826a49SYabin Cui { 17, 18, 17, 11, 3,999, ZSTD_btultra2}, /* level 22.*/ 103*01826a49SYabin Cui }, 104*01826a49SYabin Cui { /* for srcSize <= 16 KB */ 105*01826a49SYabin Cui /* W, C, H, S, L, T, strat */ 106*01826a49SYabin Cui { 14, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */ 107*01826a49SYabin Cui { 14, 14, 15, 1, 5, 0, ZSTD_fast }, /* level 1 */ 108*01826a49SYabin Cui { 14, 14, 15, 1, 4, 0, ZSTD_fast }, /* level 2 */ 109*01826a49SYabin Cui { 14, 14, 15, 2, 4, 0, ZSTD_dfast }, /* level 3 */ 110*01826a49SYabin Cui { 14, 14, 14, 4, 4, 2, ZSTD_greedy }, /* level 4 */ 111*01826a49SYabin Cui { 14, 14, 14, 3, 4, 4, ZSTD_lazy }, /* level 5.*/ 112*01826a49SYabin Cui { 14, 14, 14, 4, 4, 8, ZSTD_lazy2 }, /* level 6 */ 113*01826a49SYabin Cui { 14, 14, 14, 6, 4, 8, ZSTD_lazy2 }, /* level 7 */ 114*01826a49SYabin Cui { 14, 14, 14, 8, 4, 8, ZSTD_lazy2 }, /* level 8.*/ 115*01826a49SYabin Cui { 14, 15, 14, 5, 4, 8, ZSTD_btlazy2 }, /* level 9.*/ 116*01826a49SYabin Cui { 14, 15, 14, 9, 4, 8, ZSTD_btlazy2 }, /* level 10.*/ 117*01826a49SYabin Cui { 14, 15, 14, 3, 4, 12, ZSTD_btopt }, /* level 11.*/ 118*01826a49SYabin Cui { 14, 15, 14, 4, 3, 24, ZSTD_btopt }, /* level 12.*/ 119*01826a49SYabin Cui { 14, 15, 14, 5, 3, 32, ZSTD_btultra }, /* level 13.*/ 120*01826a49SYabin Cui { 14, 15, 15, 6, 3, 64, ZSTD_btultra }, /* level 14.*/ 121*01826a49SYabin Cui { 14, 15, 15, 7, 3,256, ZSTD_btultra }, /* level 15.*/ 122*01826a49SYabin Cui { 14, 15, 15, 5, 3, 48, ZSTD_btultra2}, /* level 16.*/ 123*01826a49SYabin Cui { 14, 15, 15, 6, 3,128, ZSTD_btultra2}, /* level 17.*/ 124*01826a49SYabin Cui { 14, 15, 15, 7, 3,256, ZSTD_btultra2}, /* level 18.*/ 125*01826a49SYabin Cui { 14, 15, 15, 8, 3,256, ZSTD_btultra2}, /* level 19.*/ 126*01826a49SYabin Cui { 14, 15, 15, 8, 3,512, ZSTD_btultra2}, /* level 20.*/ 127*01826a49SYabin Cui { 14, 15, 15, 9, 3,512, ZSTD_btultra2}, /* level 21.*/ 128*01826a49SYabin Cui { 14, 15, 15, 10, 3,999, ZSTD_btultra2}, /* level 22.*/ 129*01826a49SYabin Cui }, 130*01826a49SYabin Cui }; 131*01826a49SYabin Cui 132*01826a49SYabin Cui 133*01826a49SYabin Cui 134*01826a49SYabin Cui #endif /* ZSTD_CLEVELS_H */ 135