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