| /* |
| * 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 */ |
