update compression level table
diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index dff7f20..1761a44 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -3056,15 +3056,15 @@
static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEVEL+1] = {
{ /* "default" */
/* W, C, H, S, L, TL, strat */
- { 18, 12, 12, 1, 7, 16, ZSTD_fast }, /* level 0 - not used */
+ { 18, 12, 12, 1, 7, 16, ZSTD_fast }, /* level 0 - never used */
{ 19, 13, 14, 1, 7, 16, ZSTD_fast }, /* level 1 */
{ 19, 15, 16, 1, 6, 16, ZSTD_fast }, /* level 2 */
- { 20, 16, 17, 1, 5, 16, ZSTD_dfast }, /* level 3 */
- { 20, 13, 17, 2, 5, 16, ZSTD_greedy }, /* level 4.*/
+ { 20, 16, 17, 1, 5, 16, ZSTD_dfast }, /* level 3.*/
+ { 20, 18, 18, 1, 5, 16, ZSTD_dfast }, /* level 4.*/
{ 20, 15, 18, 3, 5, 16, ZSTD_greedy }, /* level 5 */
{ 21, 16, 19, 2, 5, 16, ZSTD_lazy }, /* level 6 */
{ 21, 17, 20, 3, 5, 16, ZSTD_lazy }, /* level 7 */
- { 21, 18, 20, 3, 5, 16, ZSTD_lazy2 }, /* level 8.*/
+ { 21, 18, 20, 3, 5, 16, ZSTD_lazy2 }, /* level 8 */
{ 21, 20, 20, 3, 5, 16, ZSTD_lazy2 }, /* level 9 */
{ 21, 19, 21, 4, 5, 16, ZSTD_lazy2 }, /* level 10 */
{ 22, 20, 22, 4, 5, 16, ZSTD_lazy2 }, /* level 11 */
@@ -3073,16 +3073,16 @@
{ 22, 21, 22, 6, 5, 16, ZSTD_lazy2 }, /* level 14 */
{ 22, 21, 21, 5, 5, 16, ZSTD_btlazy2 }, /* level 15 */
{ 23, 22, 22, 5, 5, 16, ZSTD_btlazy2 }, /* level 16 */
- { 23, 23, 22, 5, 5, 16, ZSTD_btlazy2 }, /* level 17.*/
- { 23, 23, 22, 6, 5, 24, ZSTD_btopt }, /* level 18.*/
- { 23, 23, 22, 6, 3, 48, ZSTD_btopt }, /* level 19.*/
- { 25, 26, 23, 7, 3, 64, ZSTD_btopt }, /* level 20.*/
- { 26, 26, 23, 7, 3,256, ZSTD_btopt }, /* level 21.*/
- { 27, 27, 25, 9, 3,512, ZSTD_btopt }, /* level 22.*/
+ { 23, 21, 22, 4, 5, 24, ZSTD_btopt }, /* level 17 */
+ { 23, 23, 22, 6, 5, 32, ZSTD_btopt }, /* level 18 */
+ { 23, 23, 22, 6, 3, 48, ZSTD_btopt }, /* level 19 */
+ { 25, 25, 23, 7, 3, 64, ZSTD_btopt }, /* level 20 */
+ { 26, 26, 23, 7, 3,256, ZSTD_btopt }, /* level 21 */
+ { 27, 27, 25, 9, 3,512, ZSTD_btopt }, /* level 22 */
},
{ /* for srcSize <= 256 KB */
/* W, C, H, S, L, T, strat */
- { 0, 0, 0, 0, 0, 0, ZSTD_fast }, /* level 0 - not used */
+ { 0, 0, 0, 0, 0, 0, ZSTD_fast }, /* level 0 - not used */
{ 18, 13, 14, 1, 6, 8, ZSTD_fast }, /* level 1 */
{ 18, 14, 13, 1, 5, 8, ZSTD_dfast }, /* level 2 */
{ 18, 16, 15, 1, 5, 8, ZSTD_dfast }, /* level 3 */