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dictionary compression use correct file size estimation

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when determining compression parameters
to compress one file only.

For multiple files, it still "bets" that files are going to be small.

There was also a bug recently added in ZSTD_CCtx_loadDictionary_advanced()
making it incapable to use pledgedSrcSize to determine compression parameters.
This commit is contained in:
Yann Collet
2017-10-14 01:21:43 -07:00
parent 5eed8e7a55
commit fc8d293460
2 changed files with 6 additions and 5 deletions
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lib/compress/zstd_compress.c
+1 -1
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@@ -531,7 +531,7 @@ size_t ZSTD_CCtx_loadDictionary_advanced(
cctx->cdict = NULL;
} else {
ZSTD_compressionParameters const cParams =
ZSTD_getCParamsFromCCtxParams(cctx->requestedParams, 0, dictSize);
ZSTD_getCParamsFromCCtxParams(cctx->requestedParams, cctx->pledgedSrcSizePlusOne-1, dictSize);
cctx->cdictLocal = ZSTD_createCDict_advanced(
dict, dictSize,
dictLoadMethod, dictMode,