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| author | Przemyslaw Skibinski <inikep@gmail.com> | 2016-12-06 18:11:53 (GMT) |
|---|---|---|
| committer | Przemyslaw Skibinski <inikep@gmail.com> | 2016-12-06 18:11:53 (GMT) |
| commit | 2113ead176e0032c7ba04aa93f3bcc3d04ba6142 (patch) | |
| tree | 54e0befc13d46f52c4ebdfe4b203f1cb1c3df73b /lib/lz4hc.c | |
| parent | c1ef7a177fae1f5435f191cbdebb0c59fb81d8ff (diff) | |
| download | lz4-2113ead176e0032c7ba04aa93f3bcc3d04ba6142.zip lz4-2113ead176e0032c7ba04aa93f3bcc3d04ba6142.tar.gz lz4-2113ead176e0032c7ba04aa93f3bcc3d04ba6142.tar.bz2 | |
17-bit LZ4HC_MAXD
Diffstat (limited to 'lib/lz4hc.c')
| -rw-r--r-- | lib/lz4hc.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/lib/lz4hc.c b/lib/lz4hc.c index 57587f3..abdef68 100644 --- a/lib/lz4hc.c +++ b/lib/lz4hc.c @@ -84,7 +84,7 @@ * Local Macros **************************************/ #define HASH_FUNCTION(i) (((i) * 2654435761U) >> ((MINMATCH*8)-LZ4HC_HASH_LOG)) -/* #define DELTANEXTU16(p) chainTable[(p) & LZ4HC_MAXD_MASK] */ /* flexible, LZ4HC_MAXD dependent */ +#define DELTANEXTMAXD(p) chainTable[(p) & LZ4HC_MAXD_MASK] /* flexible, LZ4HC_MAXD dependent */ #define DELTANEXTU16(p) chainTable[(U16)(p)] /* faster */ static U32 LZ4HC_hashPtr(const void* ptr) { return HASH_FUNCTION(LZ4_read32(ptr)); } @@ -499,14 +499,18 @@ static int LZ4HC_compress_generic ( limitedOutput_directive limit ) { +/* +16#silesia_tar : 211947520 -> 77841782 (2.723), 9.8 MB/s ,1874.4 MB/s + +*/ if (compressionLevel < 1) compressionLevel = LZ4HC_DEFAULT_CLEVEL; if (compressionLevel > 16) { switch (compressionLevel) { - case 17: ctx->searchNum = 64; return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, 0, 64, 0); - case 18: ctx->searchNum = 256; return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, 0, 256, 0); - case 19: ctx->searchNum = 64; return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, 1, 64, 0); - case 20: - default: ctx->searchNum = 256; return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, 1, 256, 0); + case 17: ctx->searchNum = 64; return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, 0, 64); + case 18: ctx->searchNum = 256; return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, 0, 256); + case 19: ctx->searchNum = 64; return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, 1, 64); + default: + case 20: ctx->searchNum = 1<<14; return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, 1, LZ4_OPT_NUM); } } |