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Update to ZStandard v1.1.4

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This commit is contained in:
Tino Reichardt
2017-03-20 22:42:32 +01:00
parent e8f0206665
commit c9a55673b3
34 changed files with 1210 additions and 310 deletions
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31
C/zstd/zstd_v01.c
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@@ -1992,6 +1992,37 @@ size_t ZSTDv01_decompress(void* dst, size_t maxDstSize, const void* src, size_t
return ZSTDv01_decompressDCtx(&ctx, dst, maxDstSize, src, srcSize);
}
size_t ZSTDv01_findFrameCompressedSize(const void* src, size_t srcSize)
{
const BYTE* ip = (const BYTE*)src;
size_t remainingSize = srcSize;
U32 magicNumber;
blockProperties_t blockProperties;
/* Frame Header */
if (srcSize < ZSTD_frameHeaderSize+ZSTD_blockHeaderSize) return ERROR(srcSize_wrong);
magicNumber = ZSTD_readBE32(src);
if (magicNumber != ZSTD_magicNumber) return ERROR(prefix_unknown);
ip += ZSTD_frameHeaderSize; remainingSize -= ZSTD_frameHeaderSize;
/* Loop on each block */
while (1)
{
size_t blockSize = ZSTDv01_getcBlockSize(ip, remainingSize, &blockProperties);
if (ZSTDv01_isError(blockSize)) return blockSize;
ip += ZSTD_blockHeaderSize;
remainingSize -= ZSTD_blockHeaderSize;
if (blockSize > remainingSize) return ERROR(srcSize_wrong);
if (blockSize == 0) break; /* bt_end */
ip += blockSize;
remainingSize -= blockSize;
}
return ip - (const BYTE*)src;
}
/*******************************
* Streaming Decompression API