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modified : compression Levels for blocks <= 16KB

dev
Yann Collet 2016-02-13 15:07:24 +01:00
parent 38fba56483
commit 422fd563f3
1 changed files with 34 additions and 34 deletions
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68
lib/zstd_compress.c
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@ -2290,7 +2290,7 @@ static const ZSTD_parameters ZSTD_defaultParameters[4][ZSTD_MAX_CLEVEL+1] = {
{ 0, 26, 27, 25, 10, 4,256, ZSTD_opt_bt }, /* level 21 */
},
{ /* for srcSize <= 256 KB */
/* SL, W, C, H, S, L, strat */
/* SL, W, C, H, S, L,T, strat */
{ 0, 18, 13, 14, 1, 7, 4, ZSTD_fast }, /* level 0 - never used */
{ 0, 18, 14, 15, 1, 6, 4, ZSTD_fast }, /* level 1 */
{ 0, 18, 14, 15, 1, 5, 4, ZSTD_fast }, /* level 2 */
@ -2300,19 +2300,19 @@ static const ZSTD_parameters ZSTD_defaultParameters[4][ZSTD_MAX_CLEVEL+1] = {
{ 0, 18, 13, 15, 4, 4, 4, ZSTD_lazy }, /* level 6 */
{ 0, 18, 14, 16, 5, 4, 4, ZSTD_lazy }, /* level 7 */
{ 0, 18, 15, 16, 6, 4, 4, ZSTD_lazy }, /* level 8 */
{ 0, 18, 15, 15, 7, 4, 4, ZSTD_lazy }, /* level 9 */
{ 0, 18, 16, 16, 7, 4, 4, ZSTD_lazy }, /* level 10 */
{ 0, 18, 16, 16, 8, 4, 4, ZSTD_lazy }, /* level 11 */
{ 0, 18, 17, 16, 8, 4, 4, ZSTD_lazy }, /* level 12 */
{ 0, 18, 17, 16, 9, 4, 4, ZSTD_lazy }, /* level 13 */
{ 0, 18, 18, 16, 9, 4, 4, ZSTD_lazy }, /* level 14 */
{ 0, 18, 15, 15, 5, 4, 8, ZSTD_opt }, /* level 9 */
{ 0, 18, 16, 16, 6, 4,12, ZSTD_opt }, /* level 10 */
{ 0, 18, 16, 16, 7, 4,16, ZSTD_opt }, /* level 11 */
{ 0, 18, 17, 16, 8, 4,20, ZSTD_opt }, /* level 12 */
{ 0, 18, 17, 16, 9, 4,24, ZSTD_opt }, /* level 13 */
{ 0, 18, 18, 16, 9, 4,32, ZSTD_opt }, /* level 14 */
{ 0, 18, 17, 17, 9, 4, 4, ZSTD_lazy2 }, /* level 15 */
{ 0, 18, 18, 18, 9, 4, 4, ZSTD_lazy2 }, /* level 16 */
{ 0, 18, 18, 18, 10, 4, 4, ZSTD_lazy2 }, /* level 17 */
{ 0, 18, 18, 18, 11, 4, 4, ZSTD_lazy2 }, /* level 18 */
{ 0, 18, 18, 18, 12, 4, 4, ZSTD_lazy2 }, /* level 19 */
{ 0, 18, 18, 18, 13, 4, 4, ZSTD_lazy2 }, /* level 20 */
{ 0, 18, 18, 18, 10, 4, 4, ZSTD_lazy2 }, /* level ??? */
{ 0, 18, 19, 18, 11, 4, 4, ZSTD_btlazy2 }, /* level 18 */
{ 0, 18, 19, 18, 12, 4,32, ZSTD_opt_bt }, /* level 19 */
{ 0, 18, 19, 18, 13, 4,64, ZSTD_opt_bt }, /* level 20 */
{ 0, 18, 19, 18, 10, 4,128,ZSTD_opt_bt }, /* level 21 */
},
{ /* for srcSize <= 128 KB */
/* l, W, C, H, S, L, T, strat */
@ -2341,29 +2341,29 @@ static const ZSTD_parameters ZSTD_defaultParameters[4][ZSTD_MAX_CLEVEL+1] = {
},
{ /* for srcSize <= 16 KB */
/* W, C, H, S, L, strat */
{ 0, 0, 0, 0, 0, 0, 4, ZSTD_fast }, /* level 0 - never used */
{ 0, 14, 14, 14, 1, 4, 4, ZSTD_fast }, /* level 1 */
{ 0, 14, 14, 16, 1, 4, 4, ZSTD_fast }, /* level 2 */
{ 0, 14, 14, 14, 5, 4, 4, ZSTD_greedy }, /* level 3 */
{ 0, 14, 14, 14, 8, 4, 4, ZSTD_greedy }, /* level 4 */
{ 0, 14, 11, 14, 6, 4, 4, ZSTD_lazy }, /* level 5 */
{ 0, 14, 14, 13, 6, 5, 4, ZSTD_lazy }, /* level 6 */
{ 0, 14, 14, 14, 7, 6, 4, ZSTD_lazy }, /* level 7 */
{ 0, 14, 14, 14, 8, 4, 4, ZSTD_lazy }, /* level 8 */
{ 0, 14, 14, 15, 9, 4, 4, ZSTD_lazy }, /* level 9 */
{ 0, 14, 14, 15, 10, 4, 4, ZSTD_lazy }, /* level 10 */
{ 0, 14, 15, 15, 6, 4, 4, ZSTD_btlazy2 }, /* level 11 */
{ 0, 14, 15, 15, 7, 4, 4, ZSTD_btlazy2 }, /* level 12 */
{ 0, 14, 15, 15, 8, 4, 4, ZSTD_btlazy2 }, /* level 13 */
{ 0, 14, 15, 15, 9, 4, 4, ZSTD_btlazy2 }, /* level 14 */
{ 0, 14, 15, 15, 10, 4, 8, ZSTD_opt }, /* level 15 */
{ 0, 14, 15, 15, 11, 4,12, ZSTD_opt }, /* level 16 */
{ 0, 14, 15, 15, 12, 4,16, ZSTD_opt }, /* level 17 */
{ 0, 14, 15, 15, 13, 4,16, ZSTD_opt_bt }, /* level 18 */
{ 0, 14, 15, 15, 14, 4,32, ZSTD_opt_bt }, /* level 19 */
{ 0, 14, 15, 15, 15, 4,64, ZSTD_opt_bt }, /* level 20 */
{ 0, 14, 15, 15, 12, 4,128,ZSTD_opt_bt }, /* level 21 */
/* l, W, C, H, S, L, T, strat */
{ 0, 0, 0, 0, 0, 0, 0, ZSTD_fast }, /* level 0 -- never used */
{ 0, 14, 14, 14, 1, 4, 4, ZSTD_fast }, /* level 1 */
{ 0, 14, 14, 15, 1, 4, 4, ZSTD_fast }, /* level 2 */
{ 0, 14, 13, 15, 4, 4, 4, ZSTD_greedy }, /* level 3 */
{ 0, 14, 14, 15, 3, 4, 4, ZSTD_lazy }, /* level 4 */
{ 0, 14, 14, 14, 6, 4, 4, ZSTD_lazy }, /* level 5 */
{ 0, 14, 14, 14, 5, 4, 4, ZSTD_lazy2 }, /* level 6 */
{ 0, 14, 14, 14, 7, 4, 4, ZSTD_lazy2 }, /* level 7 */
{ 0, 14, 14, 14, 8, 4, 4, ZSTD_lazy2 }, /* level 8 */
{ 0, 14, 14, 14, 9, 4, 4, ZSTD_lazy2 }, /* level 9 */
{ 0, 14, 14, 14, 10, 4, 4, ZSTD_lazy2 }, /* level 10 */
{ 0, 14, 14, 14, 11, 4, 4, ZSTD_lazy2 }, /* level 11 */
{ 0, 14, 15, 15, 12, 4, 32, ZSTD_opt_bt }, /* level 12 */
{ 0, 14, 15, 15, 12, 4, 64, ZSTD_opt_bt }, /* level 13 */
{ 0, 14, 15, 15, 12, 4, 96, ZSTD_opt_bt }, /* level 14 */
{ 0, 14, 15, 15, 12, 4,128, ZSTD_opt_bt }, /* level 15 */
{ 0, 14, 15, 15, 12, 4,256, ZSTD_opt_bt }, /* level 16 */
{ 0, 14, 15, 15, 13, 4,256, ZSTD_opt_bt }, /* level 17 */
{ 0, 14, 15, 15, 14, 4,256, ZSTD_opt_bt }, /* level 18 */
{ 0, 14, 15, 15, 15, 4,256, ZSTD_opt_bt }, /* level 19 */
{ 0, 14, 15, 15, 16, 4,256, ZSTD_opt_bt }, /* level 20 */
{ 0, 14, 15, 15, 17, 4,256, ZSTD_opt_bt }, /* level 21 */
},
};