ddidderr/zstd-rs
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updated specifications

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This commit is contained in:
Yann Collet
2016-07-04 16:13:11 +02:00
parent 92c986b4e8
commit 23f05ccc6b
2 changed files with 298 additions and 47 deletions
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lib/decompress/zstd_decompress.c
+11 -11
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@@ -195,7 +195,7 @@ void ZSTD_copyDCtx(ZSTD_DCtx* dstDCtx, const ZSTD_DCtx* srcDCtx)
/* Frame format description
Frame Header - [ Block Header - Block ] - Frame End
1) Frame Header
- 4 bytes - Magic Number : ZSTD_MAGICNUMBER (defined within zstd_static.h)
- 4 bytes - Magic Number : ZSTD_MAGICNUMBER (defined within zstd.h)
- 1 byte - Frame Descriptor
2) Block Header
- 3 bytes, starting with a 2-bits descriptor
@@ -629,7 +629,7 @@ size_t ZSTD_decodeSeqHeaders(int* nbSeqPtr,
/* FSE table descriptors */
{ U32 const LLtype = *ip >> 6;
U32 const Offtype = (*ip >> 4) & 3;
U32 const OFtype = (*ip >> 4) & 3;
U32 const MLtype = (*ip >> 2) & 3;
ip++;
@@ -637,17 +637,17 @@ size_t ZSTD_decodeSeqHeaders(int* nbSeqPtr,
if (ip > iend-3) return ERROR(srcSize_wrong); /* min : all 3 are "raw", hence no header, but at least xxLog bits per type */
/* Build DTables */
{ size_t const bhSize = ZSTD_buildSeqTable(DTableLL, LLtype, MaxLL, LLFSELog, ip, iend-ip, LL_defaultNorm, LL_defaultNormLog, flagRepeatTable);
if (ZSTD_isError(bhSize)) return ERROR(corruption_detected);
ip += bhSize;
{ size_t const llhSize = ZSTD_buildSeqTable(DTableLL, LLtype, MaxLL, LLFSELog, ip, iend-ip, LL_defaultNorm, LL_defaultNormLog, flagRepeatTable);
if (ZSTD_isError(llhSize)) return ERROR(corruption_detected);
ip += llhSize;
}
{ size_t const bhSize = ZSTD_buildSeqTable(DTableOffb, Offtype, MaxOff, OffFSELog, ip, iend-ip, OF_defaultNorm, OF_defaultNormLog, flagRepeatTable);
if (ZSTD_isError(bhSize)) return ERROR(corruption_detected);
ip += bhSize;
{ size_t const ofhSize = ZSTD_buildSeqTable(DTableOffb, OFtype, MaxOff, OffFSELog, ip, iend-ip, OF_defaultNorm, OF_defaultNormLog, flagRepeatTable);
if (ZSTD_isError(ofhSize)) return ERROR(corruption_detected);
ip += ofhSize;
}
{ size_t const bhSize = ZSTD_buildSeqTable(DTableML, MLtype, MaxML, MLFSELog, ip, iend-ip, ML_defaultNorm, ML_defaultNormLog, flagRepeatTable);
if (ZSTD_isError(bhSize)) return ERROR(corruption_detected);
ip += bhSize;
{ size_t const mlhSize = ZSTD_buildSeqTable(DTableML, MLtype, MaxML, MLFSELog, ip, iend-ip, ML_defaultNorm, ML_defaultNormLog, flagRepeatTable);
if (ZSTD_isError(mlhSize)) return ERROR(corruption_detected);
ip += mlhSize;
} }
return ip-istart;