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Code Issues Releases 1 Activity

update compresson levels

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This commit is contained in:
Yann Collet 2016-03-09 16:57:09 +01:00
parent 4f013a2281
commit e3193c4081
1 changed files with 10 additions and 22 deletions
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32
lib/zstd_compress.c
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@ -2295,7 +2295,7 @@ size_t ZSTD_compress(void* dst, size_t maxDstSize, const void* src, size_t srcSi
/*-===== Pre-defined compression levels =====-*/
#define ZSTD_MAX_CLEVEL 25
#define ZSTD_MAX_CLEVEL 22
unsigned ZSTD_maxCLevel(void) { return ZSTD_MAX_CLEVEL; }
@ -2306,28 +2306,25 @@ static const ZSTD_parameters ZSTD_defaultParameters[4][ZSTD_MAX_CLEVEL+1] = {
{ 0, 19, 13, 14, 0, 1, 7, 4, ZSTD_fast }, /* level 1 */
{ 0, 19, 15, 16, 0, 1, 6, 4, ZSTD_fast }, /* level 2 */
{ 0, 20, 18, 20, 0, 1, 6, 4, ZSTD_fast }, /* level 3 */
{ 0, 21, 19, 21, 0, 1, 6, 4, ZSTD_fast }, /* level 4 */
{ 0, 20, 14, 18, 0, 3, 5, 4, ZSTD_greedy }, /* level 5 */
{ 0, 20, 13, 17, 0, 2, 5, 4, ZSTD_greedy }, /* level 4.*/
{ 0, 20, 15, 18, 0, 3, 5, 4, ZSTD_greedy }, /* level 5.*/
{ 0, 20, 18, 19, 0, 3, 5, 4, ZSTD_greedy }, /* level 6 */
{ 0, 21, 17, 20, 0, 3, 5, 4, ZSTD_lazy }, /* level 7 */
{ 0, 21, 19, 20, 0, 3, 5, 4, ZSTD_lazy }, /* level 8 */
{ 0, 21, 18, 20, 0, 3, 5, 4, ZSTD_lazy2 }, /* level 8.*/
{ 0, 21, 20, 20, 0, 3, 5, 4, ZSTD_lazy2 }, /* level 9 */
{ 0, 21, 19, 21, 0, 4, 5, 4, ZSTD_lazy2 }, /* level 10 */
{ 0, 22, 20, 22, 0, 4, 5, 4, ZSTD_lazy2 }, /* level 11 */
{ 0, 22, 20, 22, 0, 5, 5, 4, ZSTD_lazy2 }, /* level 12 */
{ 0, 22, 21, 22, 0, 5, 5, 4, ZSTD_lazy2 }, /* level 13 */
{ 0, 22, 22, 23, 0, 5, 5, 4, ZSTD_lazy2 }, /* level 14 */
{ 0, 23, 23, 23, 0, 5, 5, 4, ZSTD_lazy2 }, /* level 15 */
{ 0, 22, 21, 22, 0, 6, 5, 4, ZSTD_lazy2 }, /* level 14 */
{ 0, 22, 21, 21, 0, 5, 5, 4, ZSTD_btlazy2 }, /* level 15 */
{ 0, 23, 22, 22, 0, 5, 5, 4, ZSTD_btlazy2 }, /* level 16 */
{ 0, 24, 24, 23, 0, 4, 5, 4, ZSTD_btlazy2 }, /* level 17 */
{ 0, 24, 24, 24, 0, 5, 5, 4, ZSTD_btlazy2 }, /* level 17 */
{ 0, 24, 24, 23, 0, 5, 5, 30, ZSTD_btopt }, /* level 18 */
{ 0, 25, 25, 24, 0, 5, 4, 40, ZSTD_btopt }, /* level 19 */
{ 0, 26, 26, 25, 0, 8, 4,256, ZSTD_btopt }, /* level 20 */
{ 0, 26, 27, 25, 0, 10, 4,256, ZSTD_btopt }, /* level 21 */
{ 0, 24, 24, 23, 16, 5, 3, 30, ZSTD_btopt }, /* level 22 */
{ 0, 25, 25, 24, 16, 5, 3, 40, ZSTD_btopt }, /* level 23 */
{ 0, 26, 26, 25, 16, 8, 3,256, ZSTD_btopt }, /* level 24 */
{ 0, 26, 27, 25, 24, 10, 3,256, ZSTD_btopt }, /* level 25 */
{ 0, 25, 25, 24, 0, 6, 3, 64, ZSTD_btopt }, /* level 20 */
{ 0, 26, 26, 25, 0, 7, 3,256, ZSTD_btopt }, /* level 21 */
{ 0, 27, 28, 27, 0, 9, 3,256, ZSTD_btopt }, /* level 22 */
},
{ /* for srcSize <= 256 KB */
/* l, W, C, H, H3, S, L, T, strat */
@ -2354,9 +2351,6 @@ static const ZSTD_parameters ZSTD_defaultParameters[4][ZSTD_MAX_CLEVEL+1] = {
{ 0, 18, 19, 18, 0, 11, 4,256, ZSTD_btopt }, /* level 20.*/
{ 0, 18, 19, 18, 0, 12, 4,256, ZSTD_btopt }, /* level 21.*/
{ 0, 18, 19, 18, 0, 12, 4,256, ZSTD_btopt }, /* level 21-2*/
{ 0, 18, 19, 18, 0, 12, 4,256, ZSTD_btopt }, /* level 21-3*/
{ 0, 18, 19, 18, 0, 12, 4,256, ZSTD_btopt }, /* level 21-4*/
{ 0, 18, 19, 18, 0, 12, 4,256, ZSTD_btopt }, /* level 21-5*/
},
{ /* for srcSize <= 128 KB */
/* l, W, C, H, H3, S, L, T, strat */
@ -2383,9 +2377,6 @@ static const ZSTD_parameters ZSTD_defaultParameters[4][ZSTD_MAX_CLEVEL+1] = {
{ 0, 17, 18, 17, 16, 9, 3,256, ZSTD_btopt }, /* level 20.*/
{ 0, 17, 18, 17, 16, 10, 3,256, ZSTD_btopt }, /* level 21.*/
{ 0, 17, 18, 17, 16, 11, 3,256, ZSTD_btopt }, /* level 22.*/
{ 0, 17, 18, 17, 16, 12, 3,256, ZSTD_btopt }, /* level 23.*/
{ 0, 17, 18, 17, 16, 13, 3,256, ZSTD_btopt }, /* level 24.*/
{ 0, 17, 18, 17, 16, 14, 3,256, ZSTD_btopt }, /* level 25.*/
},
{ /* for srcSize <= 16 KB */
/* l, W, C, H, H3, S, L, T, strat */
@ -2412,9 +2403,6 @@ static const ZSTD_parameters ZSTD_defaultParameters[4][ZSTD_MAX_CLEVEL+1] = {
{ 0, 14, 15, 15, 16, 8, 3,256, ZSTD_btopt }, /* level 20.*/
{ 0, 14, 15, 15, 16, 9, 3,256, ZSTD_btopt }, /* level 21.*/
{ 0, 14, 15, 15, 16, 10, 3,256, ZSTD_btopt }, /* level 22.*/
{ 0, 14, 15, 15, 16, 11, 3,256, ZSTD_btopt }, /* level 23.*/
{ 0, 14, 15, 15, 16, 12, 3,256, ZSTD_btopt }, /* level 24.*/
{ 0, 14, 15, 15, 16, 13, 3,256, ZSTD_btopt }, /* level 25.*/
},
};