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faster level 1 at 256 KB

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Yann Collet
2016-04-08 02:02:12 +02:00
parent 9e8b09a7bd
commit 0dbf2874ee
3 changed files with 34 additions and 56 deletions
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lib/zstd_compress.c
+2 -1
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@@ -2642,6 +2642,7 @@ size_t ZSTD_compress_usingPreparedCCtx(ZSTD_CCtx* cctx, const ZSTD_CCtx* prepare
}
{ size_t const cSize = ZSTD_compressContinue(cctx, dst, dstCapacity, src, srcSize);
if (ZSTD_isError(cSize)) return cSize;
{ size_t const endSize = ZSTD_compressEnd(cctx, (char*)dst+cSize, dstCapacity-cSize);
if (ZSTD_isError(endSize)) return endSize;
return cSize + endSize;
@@ -2749,7 +2750,7 @@ static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEV
{ /* for srcSize <= 256 KB */
/* W, C, H, S, L, T, strat */
{ 0, 0, 0, 0, 0, 0, ZSTD_fast }, /* level 0 */
{ 18, 14, 15, 1, 6, 4, ZSTD_fast }, /* level 1 */
{ 18, 13, 14, 1, 6, 4, ZSTD_fast }, /* level 1 */
{ 18, 14, 16, 1, 5, 4, ZSTD_fast }, /* level 2 */
{ 18, 14, 17, 1, 5, 4, ZSTD_fast }, /* level 3.*/
{ 18, 14, 15, 4, 4, 4, ZSTD_greedy }, /* level 4 */