Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\zstd\decompress.c Create Date:2022-07-28 07:07:18
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:ZSTD_decompressSequencesLong

Proto:static size_t ZSTD_decompressSequencesLong(ZSTD_DCtx *dctx, void *dst, size_t maxDstSize, const void *seqStart, size_t seqSize)

Type:size_t

Parameter:

TypeParameterName
ZSTD_DCtx *dctx
void *dst
size_tmaxDstSize
const void *seqStart
size_tseqSize
1350  ip = seqStart
1351  iend = ip + seqSize
1352  ostart = dst
1353  oend = ostart + maxDstSize
1354  op = ostart
1355  litPtr = litPtr
1356  litEnd = litPtr + litSize
1357  base = base
1358  vBase = vBase
1359  dictEnd = dictEnd
1360  windowSize = windowSize
1365  seqHSize = ZSTD_decodeSeqHeaders(dctx, & nbSeq, ip, seqSize)
1366  If ZSTD_isError() - tells if a size_t function result is an error code*@code: The function result to check for error.* Return: Non-zero iff the code is an error. Then Return seqHSize
1368  ip += seqHSize
1372  If nbSeq Then
1376  sequences = workspace
1377  seqAdvance = -************************************** shared macros(nbSeq, ADVANCED_SEQS)
1381  fseEntropy = 1
1384  When i < umber of repcodes cycle prevOffset[i] = rep[i]
1387  base = base
1388  pos = op - base
1389  gotoDict = dictEnd - base
1391  FSE_initDState( & stateLL, & DStream, LLTptr)
1392  FSE_initDState( & stateOffb, & DStream, OFTptr)
1393  FSE_initDState( & stateML, & DStream, MLTptr)
1396  When BIT_reloadDStream( & DStream) <= BIT_DStream_completed && seqNb < seqAdvance cycle
1397  sequences[seqNb] = ZSTD_decodeSequenceLong( & seqState, windowSize)
1399  If seqNb < seqAdvance Then Return -***************************************** Error codes handling(corruption_detected)
1403  When BIT_reloadDStream( & (DStream)) <= BIT_DStream_completed && seqNb < nbSeq cycle
1404  sequence = ZSTD_decodeSequenceLong( & seqState, windowSize)
1405  oneSeqSize = ZSTD_execSequenceLong(op, oend, sequences[(seqNb - ADVANCED_SEQS) & STOSEQ_MASK], & litPtr, litEnd, base, vBase, dictEnd)
1407  If ZSTD_isError() - tells if a size_t function result is an error code*@code: The function result to check for error.* Return: Non-zero iff the code is an error. Then Return oneSeqSize
1409  ZSTD_PREFETCH(match)
1410  sequences[seqNb & STOSEQ_MASK] = sequence
1411  op += oneSeqSize
1413  If seqNb < nbSeq Then Return -***************************************** Error codes handling(corruption_detected)
1417  seqNb -= seqAdvance
1418  When seqNb < nbSeq cycle
1419  oneSeqSize = ZSTD_execSequenceLong(op, oend, sequences[seqNb & STOSEQ_MASK], & litPtr, litEnd, base, vBase, dictEnd)
1420  If ZSTD_isError() - tells if a size_t function result is an error code*@code: The function result to check for error.* Return: Non-zero iff the code is an error. Then Return oneSeqSize
1422  op += oneSeqSize
1428  When i < umber of repcodes cycle rep[i] = prevOffset[i]
1435  lastLLSize = litEnd - litPtr
1436  If lastLLSize > oend - op Then Return -***************************************** Error codes handling(dstSize_tooSmall)
1438  No 3D Now!(op, litPtr, lastLLSize)
1439  op += lastLLSize
1442  Return op - ostart
Caller
NameDescribe
ZSTD_decompressBlock_internal