/* * Copyright (c) Meta Platforms, Inc. and affiliates. * All rights reserved. * * This source code is licensed under both the BSD-style license (found in the * LICENSE file in the root directory of this source tree) and the GPLv2 (found * in the COPYING file in the root directory of this source tree). * You may select, at your option, one of the above-listed licenses. */ #ifndef ZSTD_CLEVELS_H #define ZSTD_CLEVELS_H #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_compressionParameters */ #include "zstd.h" /*-===== Pre-defined compression levels =====-*/ #define ZSTD_MAX_CLEVEL 22 #ifdef __GNUC__ __attribute__((__unused__)) #endif static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEVEL+1] = { { /* "default" - for any srcSize > 256 KB */ /* W, C, H, S, L, TL, strat */ { 19, 12, 13, 1, 6, 1, ZSTD_fast }, /* base for negative levels */ { 19, 13, 14, 1, 7, 0, ZSTD_fast }, /* level 1 */ { 20, 15, 16, 1, 6, 0, ZSTD_fast }, /* level 2 */ { 21, 16, 17, 1, 5, 0, ZSTD_dfast }, /* level 3 */ { 21, 18, 18, 1, 5, 0, ZSTD_dfast }, /* level 4 */ { 21, 18, 19, 3, 5, 2, ZSTD_greedy }, /* level 5 */ { 21, 18, 19, 3, 5, 4, ZSTD_lazy }, /* level 6 */ { 21, 19, 20, 4, 5, 8, ZSTD_lazy }, /* level 7 */ { 21, 19, 20, 4, 5, 16, ZSTD_lazy2 }, /* level 8 */ { 22, 20, 21, 4, 5, 16, ZSTD_lazy2 }, /* level 9 */ { 22, 21, 22, 5, 5, 16, ZSTD_lazy2 }, /* level 10 */ { 22, 21, 22, 6, 5, 16, ZSTD_lazy2 }, /* level 11 */ { 22, 22, 23, 6, 5, 32, ZSTD_lazy2 }, /* level 12 */ { 22, 22, 22, 4, 5, 32, ZSTD_btlazy2 }, /* level 13 */ { 22, 22, 23, 5, 5, 32, ZSTD_btlazy2 }, /* level 14 */ { 22, 23, 23, 6, 5, 32, ZSTD_btlazy2 }, /* level 15 */ { 22, 22, 22, 5, 5, 48, ZSTD_btopt }, /* level 16 */ { 23, 23, 22, 5, 4, 64, ZSTD_btopt }, /* level 17 */ { 23, 23, 22, 6, 3, 64, ZSTD_btultra }, /* level 18 */ { 23, 24, 22, 7, 3,256, ZSTD_btultra2}, /* level 19 */ { 25, 25, 23, 7, 3,256, ZSTD_btultra2}, /* level 20 */ { 26, 26, 24, 7, 3,512, ZSTD_btultra2}, /* level 21 */ { 27, 27, 25, 9, 3,999, ZSTD_btultra2}, /* level 22 */ }, { /* for srcSize <= 256 KB */ /* W, C, H, S, L, T, strat */ { 18, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */ { 18, 13, 14, 1, 6, 0, ZSTD_fast }, /* level 1 */ { 18, 14, 14, 1, 5, 0, ZSTD_dfast }, /* level 2 */ { 18, 16, 16, 1, 4, 0, ZSTD_dfast }, /* level 3 */ { 18, 16, 17, 3, 5, 2, ZSTD_greedy }, /* level 4.*/ { 18, 17, 18, 5, 5, 2, ZSTD_greedy }, /* level 5.*/ { 18, 18, 19, 3, 5, 4, ZSTD_lazy }, /* level 6.*/ { 18, 18, 19, 4, 4, 4, ZSTD_lazy }, /* level 7 */ { 18, 18, 19, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */ { 18, 18, 19, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */ { 18, 18, 19, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */ { 18, 18, 19, 5, 4, 12, ZSTD_btlazy2 }, /* level 11.*/ { 18, 19, 19, 7, 4, 12, ZSTD_btlazy2 }, /* level 12.*/ { 18, 18, 19, 4, 4, 16, ZSTD_btopt }, /* level 13 */ { 18, 18, 19, 4, 3, 32, ZSTD_btopt }, /* level 14.*/ { 18, 18, 19, 6, 3,128, ZSTD_btopt }, /* level 15.*/ { 18, 19, 19, 6, 3,128, ZSTD_btultra }, /* level 16.*/ { 18, 19, 19, 8, 3,256, ZSTD_btultra }, /* level 17.*/ { 18, 19, 19, 6, 3,128, ZSTD_btultra2}, /* level 18.*/ { 18, 19, 19, 8, 3,256, ZSTD_btultra2}, /* level 19.*/ { 18, 19, 19, 10, 3,512, ZSTD_btultra2}, /* level 20.*/ { 18, 19, 19, 12, 3,512, ZSTD_btultra2}, /* level 21.*/ { 18, 19, 19, 13, 3,999, ZSTD_btultra2}, /* level 22.*/ }, { /* for srcSize <= 128 KB */ /* W, C, H, S, L, T, strat */ { 17, 12, 12, 1, 5, 1, ZSTD_fast }, /* base for negative levels */ { 17, 12, 13, 1, 6, 0, ZSTD_fast }, /* level 1 */ { 17, 13, 15, 1, 5, 0, ZSTD_fast }, /* level 2 */ { 17, 15, 16, 2, 5, 0, ZSTD_dfast }, /* level 3 */ { 17, 17, 17, 2, 4, 0, ZSTD_dfast }, /* level 4 */ { 17, 16, 17, 3, 4, 2, ZSTD_greedy }, /* level 5 */ { 17, 16, 17, 3, 4, 4, ZSTD_lazy }, /* level 6 */ { 17, 16, 17, 3, 4, 8, ZSTD_lazy2 }, /* level 7 */ { 17, 16, 17, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */ { 17, 16, 17, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */ { 17, 16, 17, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */ { 17, 17, 17, 5, 4, 8, ZSTD_btlazy2 }, /* level 11 */ { 17, 18, 17, 7, 4, 12, ZSTD_btlazy2 }, /* level 12 */ { 17, 18, 17, 3, 4, 12, ZSTD_btopt }, /* level 13.*/ { 17, 18, 17, 4, 3, 32, ZSTD_btopt }, /* level 14.*/ { 17, 18, 17, 6, 3,256, ZSTD_btopt }, /* level 15.*/ { 17, 18, 17, 6, 3,128, ZSTD_btultra }, /* level 16.*/ { 17, 18, 17, 8, 3,256, ZSTD_btultra }, /* level 17.*/ { 17, 18, 17, 10, 3,512, ZSTD_btultra }, /* level 18.*/ { 17, 18, 17, 5, 3,256, ZSTD_btultra2}, /* level 19.*/ { 17, 18, 17, 7, 3,512, ZSTD_btultra2}, /* level 20.*/ { 17, 18, 17, 9, 3,512, ZSTD_btultra2}, /* level 21.*/ { 17, 18, 17, 11, 3,999, ZSTD_btultra2}, /* level 22.*/ }, { /* for srcSize <= 16 KB */ /* W, C, H, S, L, T, strat */ { 14, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */ { 14, 14, 15, 1, 5, 0, ZSTD_fast }, /* level 1 */ { 14, 14, 15, 1, 4, 0, ZSTD_fast }, /* level 2 */ { 14, 14, 15, 2, 4, 0, ZSTD_dfast }, /* level 3 */ { 14, 14, 14, 4, 4, 2, ZSTD_greedy }, /* level 4 */ { 14, 14, 14, 3, 4, 4, ZSTD_lazy }, /* level 5.*/ { 14, 14, 14, 4, 4, 8, ZSTD_lazy2 }, /* level 6 */ { 14, 14, 14, 6, 4, 8, ZSTD_lazy2 }, /* level 7 */ { 14, 14, 14, 8, 4, 8, ZSTD_lazy2 }, /* level 8.*/ { 14, 15, 14, 5, 4, 8, ZSTD_btlazy2 }, /* level 9.*/ { 14, 15, 14, 9, 4, 8, ZSTD_btlazy2 }, /* level 10.*/ { 14, 15, 14, 3, 4, 12, ZSTD_btopt }, /* level 11.*/ { 14, 15, 14, 4, 3, 24, ZSTD_btopt }, /* level 12.*/ { 14, 15, 14, 5, 3, 32, ZSTD_btultra }, /* level 13.*/ { 14, 15, 15, 6, 3, 64, ZSTD_btultra }, /* level 14.*/ { 14, 15, 15, 7, 3,256, ZSTD_btultra }, /* level 15.*/ { 14, 15, 15, 5, 3, 48, ZSTD_btultra2}, /* level 16.*/ { 14, 15, 15, 6, 3,128, ZSTD_btultra2}, /* level 17.*/ { 14, 15, 15, 7, 3,256, ZSTD_btultra2}, /* level 18.*/ { 14, 15, 15, 8, 3,256, ZSTD_btultra2}, /* level 19.*/ { 14, 15, 15, 8, 3,512, ZSTD_btultra2}, /* level 20.*/ { 14, 15, 15, 9, 3,512, ZSTD_btultra2}, /* level 21.*/ { 14, 15, 15, 10, 3,999, ZSTD_btultra2}, /* level 22.*/ }, }; #endif /* ZSTD_CLEVELS_H */