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Emit last literals of 0 size as well, to indicate block boundary

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This commit is contained in:
senhuang42 2020-10-29 16:41:17 -04:00
parent 69bd5f0654
commit 32cac2627a
1 changed files with 8 additions and 6 deletions
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14
lib/compress/zstd_compress.c
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@ -2489,14 +2489,16 @@ static void ZSTD_copyBlockSequences(ZSTD_CCtx* zc)
literalsRead += outSeqs[i].litLength; literalsRead += outSeqs[i].litLength;
} }
/* Insert last literals (if any exist) in the block as a sequence with ml == off == 0 */ /* Insert last literals (if any exist) in the block as a sequence with ml == off == 0.
* If there are no last literals, then we'll emit (of: 0, ml: 0, ll: 0), which is a marker
* for the block boundary, according to the API.
*/
assert(seqStoreLiteralsSize >= literalsRead); assert(seqStoreLiteralsSize >= literalsRead);
lastLLSize = seqStoreLiteralsSize - literalsRead; lastLLSize = seqStoreLiteralsSize - literalsRead;
if (lastLLSize > 0) { outSeqs[i].litLength = (U32)lastLLSize;
outSeqs[i].litLength = (U32)lastLLSize; outSeqs[i].matchLength = outSeqs[i].offset = outSeqs[i].rep = 0;
outSeqs[i].matchLength = outSeqs[i].offset = outSeqs[i].rep = 0; seqStoreSeqSize++;
seqStoreSeqSize++;
}
zc->seqCollector.seqIndex += seqStoreSeqSize; zc->seqCollector.seqIndex += seqStoreSeqSize;
} }