ddidderr/zstd-rs
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added minimum for decoder buffer

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also : introduced macro BOUNDED()
This commit is contained in:
Yann Collet
2021-10-26 08:21:31 -07:00
parent 02be2a830f
commit 518f06b281
5 changed files with 8 additions and 6 deletions
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lib/compress/zstd_compress.c
+2 -2
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@@ -1465,7 +1465,7 @@ static size_t ZSTD_estimateCCtxSize_usingCCtxParams_internal(
const size_t buffOutSize,
const U64 pledgedSrcSize)
{
size_t const windowSize = MAX(1, (size_t)MIN(((U64)1 << cParams->windowLog), pledgedSrcSize));
size_t const windowSize = BOUNDED(1, 1 << cParams->windowLog, pledgedSrcSize);
size_t const blockSize = MIN(ZSTD_BLOCKSIZE_MAX, windowSize);
U32 const divider = (cParams->minMatch==3) ? 3 : 4;
size_t const maxNbSeq = blockSize / divider;
@@ -1783,7 +1783,7 @@ ZSTD_reset_matchState(ZSTD_matchState_t* ms,
if (ms->tagTable) ZSTD_memset(ms->tagTable, 0, tagTableSize);
}
{ /* Switch to 32-entry rows if searchLog is 5 (or more) */
U32 const rowLog = MAX(MIN(cParams->searchLog, 6), 4);
U32 const rowLog = BOUNDED(4, cParams->searchLog, 6);
assert(cParams->hashLog >= rowLog);
ms->rowHashLog = cParams->hashLog - rowLog;
}