#include "LzmaDec.h"
#include <cstring>

Macros
#define	Align (SpecPos + kNumFullDistances - kEndPosModelIndex)

#define	GET_BIT(p, i) GET_BIT2(p, i, ;, ;)

#define	GET_BIT2(p, i, A0, A1)

#define	GET_BIT2_CHECK(p, i, A0, A1)

#define	GET_BIT_CHECK(p, i) GET_BIT2_CHECK(p, i, ;, ;)

#define	IF_BIT_0(p)

#define	IF_BIT_0_CHECK(p)

#define	IsMatch 0

#define	IsRep (IsMatch + (kNumStates << kNumPosBitsMax))

#define	IsRep0Long (IsRepG2 + kNumStates)

#define	IsRepG0 (IsRep + kNumStates)

#define	IsRepG1 (IsRepG0 + kNumStates)

#define	IsRepG2 (IsRepG1 + kNumStates)

#define	kAlignTableSize (1 << kNumAlignBits)

#define	kBitModelTotal (1 << kNumBitModelTotalBits)

#define	kEndPosModelIndex 14

#define	kLenNumHighBits 8

#define	kLenNumHighSymbols (1 << kLenNumHighBits)

#define	kLenNumLowBits 3

#define	kLenNumLowSymbols (1 << kLenNumLowBits)

#define	kLenNumMidBits 3

#define	kLenNumMidSymbols (1 << kLenNumMidBits)

#define	kMatchMinLen 2

#define	kMatchSpecLenStart (kMatchMinLen + kLenNumLowSymbols + kLenNumMidSymbols + kLenNumHighSymbols)

#define	kNumAlignBits 4

#define	kNumBitModelTotalBits 11

#define	kNumFullDistances (1 << (kEndPosModelIndex >> 1))

#define	kNumLenProbs (LenHigh + kLenNumHighSymbols)

#define	kNumLenToPosStates 4

#define	kNumLitStates 7

#define	kNumMoveBits 5

#define	kNumPosBitsMax 4

#define	kNumPosSlotBits 6

#define	kNumPosStatesMax (1 << kNumPosBitsMax)

#define	kNumStates 12

#define	kNumTopBits 24

#define	kStartPosModelIndex 4

#define	kTopValue ((UInt32)1 << kNumTopBits)

#define	LenChoice 0

#define	LenChoice2 (LenChoice + 1)

#define	LenCoder (Align + kAlignTableSize)

#define	LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))

#define	LenLow (LenChoice2 + 1)

#define	LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))

#define	Literal (RepLenCoder + kNumLenProbs)

#define	LZMA_BASE_SIZE 1846

#define	LZMA_DIC_MIN (1 << 12)

#define	LZMA_LIT_SIZE 768

#define	LzmaProps_GetNumProbs(p) ((UInt32)LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((p)->lc + (p)->lp)))

#define	NORMALIZE

#define	NORMALIZE_CHECK

#define	PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))

#define	RC_INIT_SIZE 5

#define	RepLenCoder (LenCoder + kNumLenProbs)

#define	SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))

#define	TREE_6_DECODE(probs, i)

#define	TREE_DECODE(probs, limit, i)

#define	TREE_DECODE_CHECK(probs, limit, i)

#define	TREE_GET_BIT(probs, i) { GET_BIT((probs + i), i); }

#define	UPDATE_0(p)

#define	UPDATE_0_CHECK range = bound;

#define	UPDATE_1(p)

#define	UPDATE_1_CHECK

Enumerations
enum	ELzmaDummy { DUMMY_ERROR, DUMMY_LIT, DUMMY_MATCH, DUMMY_REP }

Functions
SRes	LzmaDec_Allocate (CLzmaDec p, const Byte props, unsigned propsSize, ISzAlloc *alloc)

SRes	LzmaDec_AllocateProbs (CLzmaDec p, const Byte props, unsigned propsSize, ISzAlloc *alloc)

static SRes	LzmaDec_AllocateProbs2 (CLzmaDec p, const CLzmaProps propNew, ISzAlloc *alloc)

static int	LzmaDec_DecodeReal (CLzmaDec p, SizeT limit, const Byte bufLimit)

static int	LzmaDec_DecodeReal2 (CLzmaDec p, SizeT limit, const Byte bufLimit)

SRes	LzmaDec_DecodeToBuf (CLzmaDec p, Byte dest, SizeT destLen, const Byte src, SizeT srcLen, ELzmaFinishMode finishMode, ELzmaStatus status)

SRes	LzmaDec_DecodeToDic (CLzmaDec p, SizeT dicLimit, const Byte src, SizeT srcLen, ELzmaFinishMode finishMode, ELzmaStatus status)

void	LzmaDec_Free (CLzmaDec p, ISzAlloc alloc)

static void	LzmaDec_FreeDict (CLzmaDec p, ISzAlloc alloc)

void	LzmaDec_FreeProbs (CLzmaDec p, ISzAlloc alloc)

void	LzmaDec_Init (CLzmaDec *p)

void	LzmaDec_InitDicAndState (CLzmaDec *p, Bool initDic, Bool initState)

static void	LzmaDec_InitRc (CLzmaDec p, const Byte data)

static void	LzmaDec_InitStateReal (CLzmaDec *p)

static ELzmaDummy	LzmaDec_TryDummy (const CLzmaDec p, const Byte buf, SizeT inSize)

static void	LzmaDec_WriteRem (CLzmaDec *p, SizeT limit)

SRes	LzmaDecode (Byte dest, SizeT destLen, const Byte src, SizeT srcLen, const Byte propData, unsigned propSize, ELzmaFinishMode finishMode, ELzmaStatus status, ISzAlloc *alloc)

SRes	LzmaProps_Decode (CLzmaProps p, const Byte data, unsigned size)

Macro Definition Documentation

#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex)

Definition at line 156 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define GET_BIT	(	p,
		i
	)	GET_BIT2(p, i, ;, ;)

Definition at line 46 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal().

#define GET_BIT2	(	p,
		i,
		A0,
		A1
	)

Value:

IF_BIT_0(p) {                \
    UPDATE_0(p);               \
    i = (i + i);               \
    A0;                        \
  }                            \
  else {                       \
    UPDATE_1(p);               \
    i = (i + i) + 1;           \
    A1;                        \
  }

Definition at line 35 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal().

#define GET_BIT2_CHECK	(	p,
		i,
		A0,
		A1
	)

Value:

IF_BIT_0_CHECK(p) {                \
    UPDATE_0_CHECK;                  \
    i = (i + i);                     \
    A0;                              \
  }                                  \
  else {                             \
    UPDATE_1_CHECK;                  \
    i = (i + i) + 1;                 \
    A1;                              \
  }

Definition at line 94 of file LzmaDec.cc.

Referenced by LzmaDec_TryDummy().

#define GET_BIT_CHECK	(	p,
		i
	)	GET_BIT2_CHECK(p, i, ;, ;)

Definition at line 105 of file LzmaDec.cc.

Referenced by LzmaDec_TryDummy().

#define IF_BIT_0 ( p )

Value:

ttt = *(p);                                     \
  NORMALIZE;                                      \
  bound = (range >> kNumBitModelTotalBits) * ttt; \
  if (code < bound)

Definition at line 23 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal().

#define IF_BIT_0_CHECK ( p )

Value:

ttt = *(p);                                     \
  NORMALIZE_CHECK;                                \
  bound = (range >> kNumBitModelTotalBits) * ttt; \
  if (code < bound)

Definition at line 85 of file LzmaDec.cc.

Referenced by LzmaDec_TryDummy().

#define IsMatch 0

Definition at line 148 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax))

Definition at line 149 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define IsRep0Long (IsRepG2 + kNumStates)

Definition at line 153 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define IsRepG0 (IsRep + kNumStates)

Definition at line 150 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define IsRepG1 (IsRepG0 + kNumStates)

Definition at line 151 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define IsRepG2 (IsRepG1 + kNumStates)

Definition at line 152 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kAlignTableSize (1 << kNumAlignBits)

Definition at line 143 of file LzmaDec.cc.

#define kBitModelTotal (1 << kNumBitModelTotalBits)

Definition at line 12 of file LzmaDec.cc.

Referenced by LzmaDec_InitStateReal().

#define kEndPosModelIndex 14

Definition at line 136 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kLenNumHighBits 8

Definition at line 122 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kLenNumHighSymbols (1 << kLenNumHighBits)

Definition at line 123 of file LzmaDec.cc.

#define kLenNumLowBits 3

Definition at line 118 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kLenNumLowSymbols (1 << kLenNumLowBits)

Definition at line 119 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kLenNumMidBits 3

Definition at line 120 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kLenNumMidSymbols (1 << kLenNumMidBits)

Definition at line 121 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kMatchMinLen 2

Definition at line 145 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal().

#define kMatchSpecLenStart (kMatchMinLen + kLenNumLowSymbols + kLenNumMidSymbols + kLenNumHighSymbols)

Definition at line 146 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), LzmaDec_DecodeReal2(), LzmaDec_DecodeToDic(), and LzmaDec_WriteRem().

#define kNumAlignBits 4

Definition at line 142 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kNumBitModelTotalBits 11

Definition at line 11 of file LzmaDec.cc.

#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))

Definition at line 137 of file LzmaDec.cc.

#define kNumLenProbs (LenHigh + kLenNumHighSymbols)

Definition at line 130 of file LzmaDec.cc.

#define kNumLenToPosStates 4

Definition at line 140 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kNumLitStates 7

Definition at line 133 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kNumMoveBits 5

Definition at line 13 of file LzmaDec.cc.

#define kNumPosBitsMax 4

Definition at line 115 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kNumPosSlotBits 6

Definition at line 139 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kNumPosStatesMax (1 << kNumPosBitsMax)

Definition at line 116 of file LzmaDec.cc.

#define kNumStates 12

Definition at line 132 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kNumTopBits 24

Definition at line 8 of file LzmaDec.cc.

#define kStartPosModelIndex 4

Definition at line 135 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define kTopValue ((UInt32)1 << kNumTopBits)

Definition at line 9 of file LzmaDec.cc.

#define LenChoice 0

Definition at line 125 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define LenChoice2 (LenChoice + 1)

Definition at line 126 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define LenCoder (Align + kAlignTableSize)

Definition at line 157 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))

Definition at line 129 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define LenLow (LenChoice2 + 1)

Definition at line 127 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))

Definition at line 128 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define Literal (RepLenCoder + kNumLenProbs)

Definition at line 159 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), LzmaDec_InitStateReal(), and LzmaDec_TryDummy().

#define LZMA_BASE_SIZE 1846

Definition at line 161 of file LzmaDec.cc.

#define LZMA_DIC_MIN (1 << 12)

Definition at line 170 of file LzmaDec.cc.

Referenced by LzmaProps_Decode().

#define LZMA_LIT_SIZE 768

Definition at line 162 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), LzmaDec_InitStateReal(), and LzmaDec_TryDummy().

#define LzmaProps_GetNumProbs ( p ) ((UInt32)LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((p)->lc + (p)->lp)))

Definition at line 164 of file LzmaDec.cc.

Referenced by LzmaDec_AllocateProbs2().

#define NORMALIZE

Value:

if (range < kTopValue) {         \
    range <<= 8;                   \
    code = (code << 8) | (*buf++); \
  }

Definition at line 17 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal().

#define NORMALIZE_CHECK

Value:

if (range < kTopValue) {         \
    if (buf >= bufLimit)           \
      return DUMMY_ERROR;          \
    range <<= 8;                   \
    code = (code << 8) | (*buf++); \
  }

Definition at line 77 of file LzmaDec.cc.

Referenced by LzmaDec_TryDummy().

#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))

Definition at line 154 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define RC_INIT_SIZE 5

Definition at line 15 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeToDic(), and LzmaDecode().

#define RepLenCoder (LenCoder + kNumLenProbs)

Definition at line 158 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))

Definition at line 155 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal(), and LzmaDec_TryDummy().

#define TREE_6_DECODE	(	probs,
		i
	)

Value:

{                             \
    i = 1;                      \
    TREE_GET_BIT(probs, i);     \
    TREE_GET_BIT(probs, i);     \
    TREE_GET_BIT(probs, i);     \
    TREE_GET_BIT(probs, i);     \
    TREE_GET_BIT(probs, i);     \
    TREE_GET_BIT(probs, i);     \
    i -= 0x40;                  \
  }

Definition at line 64 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal().

#define TREE_DECODE	(	probs,
		limit,
		i
	)

Value:

{                                  \
    i = 1;                           \
    do {                             \
      TREE_GET_BIT(probs, i);        \
    } while (i < limit);             \
    i -= limit;                      \
  }

Definition at line 50 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal().

#define TREE_DECODE_CHECK	(	probs,
		limit,
		i
	)

Value:

{                                        \
    i = 1;                                 \
    do {                                   \
      GET_BIT_CHECK(probs + i, i)          \
    } while (i < limit);                   \
    i -= limit;                            \
  }

Definition at line 106 of file LzmaDec.cc.

Referenced by LzmaDec_TryDummy().

#define TREE_GET_BIT	(	probs,
		i
	)	{ GET_BIT((probs + i), i); }

Definition at line 48 of file LzmaDec.cc.

#define UPDATE_0 ( p )

Value:

range = bound; \

*(p) = (CLzmaProb)(ttt + ((kBitModelTotal - ttt) >> kNumMoveBits));

kBitModelTotal

#define kBitModelTotal

Definition: LzmaDec.cc:12

sistrip::SpyUtilities::range

const uint16_t range(const Frame &aFrame)

Definition: SiStripSpyUtilities.cc:76

CLzmaProb

#define CLzmaProb

Definition: LzmaDec.h:20

kNumMoveBits

#define kNumMoveBits

Definition: LzmaDec.cc:13

AlCaHLTBitMon_ParallelJobs.p

tuple p

Definition: AlCaHLTBitMon_ParallelJobs.py:153

Definition at line 28 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal().

#define UPDATE_0_CHECK range = bound;

Definition at line 90 of file LzmaDec.cc.

Referenced by LzmaDec_TryDummy().

#define UPDATE_1 ( p )

Value:

range -= bound;   \
  code -= bound;    \
  *(p) = (CLzmaProb)(ttt - (ttt >> kNumMoveBits));

Definition at line 31 of file LzmaDec.cc.

Referenced by LzmaDec_DecodeReal().

#define UPDATE_1_CHECK

Value:

range -= bound; \

code -= bound;

sistrip::SpyUtilities::range

const uint16_t range(const Frame &aFrame)

Definition: SiStripSpyUtilities.cc:76

Definition at line 91 of file LzmaDec.cc.

Referenced by LzmaDec_TryDummy().

Enumeration Type Documentation

enum ELzmaDummy

Enumerator
DUMMY_ERROR
DUMMY_LIT
DUMMY_MATCH
DUMMY_REP

Definition at line 487 of file LzmaDec.cc.

              {
   DUMMY_ERROR, /* unexpected end of input stream */
   DUMMY_LIT,
   DUMMY_MATCH,
   DUMMY_REP
 } ELzmaDummy;

Function Documentation

SRes LzmaDec_Allocate	(	CLzmaDec *	p,
		const Byte *	props,
		unsigned	propsSize,
		ISzAlloc *	alloc
	)

Definition at line 887 of file LzmaDec.cc.

References ISzAlloc::Alloc, CLzmaDec::dic, CLzmaDec::dicBufSize, _CLzmaProps::dicSize, LzmaDec_AllocateProbs2(), LzmaDec_FreeDict(), LzmaDec_FreeProbs(), LzmaProps_Decode(), CLzmaDec::prop, RINOK, SZ_ERROR_MEM, and SZ_OK.

Referenced by LzmaFile::Open().

                                                                                            {
   CLzmaProps propNew;
   SizeT dicBufSize;
   RINOK(LzmaProps_Decode(&propNew, props, propsSize));
   RINOK(LzmaDec_AllocateProbs2(p, &propNew, alloc));
   dicBufSize = propNew.dicSize;
   if (p->dic == nullptr || dicBufSize != p->dicBufSize) {
     LzmaDec_FreeDict(p, alloc);
     p->dic = (Byte *)alloc->Alloc(alloc, dicBufSize);
     if (p->dic == nullptr) {
       LzmaDec_FreeProbs(p, alloc);
       return SZ_ERROR_MEM;
     }
   }
   p->dicBufSize = dicBufSize;
   p->prop = propNew;
   return SZ_OK;
 }

SRes LzmaDec_AllocateProbs	(	CLzmaDec *	p,
		const Byte *	props,
		unsigned	propsSize,
		ISzAlloc *	alloc
	)

Definition at line 879 of file LzmaDec.cc.

References LzmaDec_AllocateProbs2(), LzmaProps_Decode(), CLzmaDec::prop, RINOK, and SZ_OK.

Referenced by LzmaDecode().

                                                                                                 {
   CLzmaProps propNew;
   RINOK(LzmaProps_Decode(&propNew, props, propsSize));
   RINOK(LzmaDec_AllocateProbs2(p, &propNew, alloc));
   p->prop = propNew;
   return SZ_OK;
 }

static SRes LzmaDec_AllocateProbs2	(	CLzmaDec *	p,
		const CLzmaProps *	propNew,
		ISzAlloc *	alloc
	)

static

Definition at line 867 of file LzmaDec.cc.

References ISzAlloc::Alloc, CLzmaProb, LzmaDec_FreeProbs(), LzmaProps_GetNumProbs, CLzmaDec::numProbs, CLzmaDec::probs, SZ_ERROR_MEM, and SZ_OK.

Referenced by LzmaDec_Allocate(), and LzmaDec_AllocateProbs().

                                                                                             {
   UInt32 numProbs = LzmaProps_GetNumProbs(propNew);
   if (p->probs == nullptr || numProbs != p->numProbs) {
     LzmaDec_FreeProbs(p, alloc);
     p->probs = (CLzmaProb *)alloc->Alloc(alloc, numProbs * sizeof(CLzmaProb));
     p->numProbs = numProbs;
     if (p->probs == nullptr)
       return SZ_ERROR_MEM;
   }
   return SZ_OK;
 }

static int LzmaDec_DecodeReal	(	CLzmaDec *	p,
		SizeT	limit,
		const Byte *	bufLimit
	)

static

Definition at line 186 of file LzmaDec.cc.

References Align, CLzmaDec::buf, visDQMUpload::buf, CLzmaDec::checkDicSize, CLzmaProb, CLzmaDec::code, alignCSCRings::dest, CLzmaDec::dic, CLzmaDec::dicBufSize, CLzmaDec::dicPos, HLT_FULL_cff::distance, GET_BIT, GET_BIT2, mps_fire::i, IF_BIT_0, IsMatch, IsRep, IsRep0Long, IsRepG0, IsRepG1, IsRepG2, kEndPosModelIndex, kLenNumHighBits, kLenNumLowBits, kLenNumLowSymbols, kLenNumMidBits, kLenNumMidSymbols, kMatchMinLen, kMatchSpecLenStart, kNumAlignBits, kNumLenToPosStates, kNumLitStates, kNumPosBitsMax, kNumPosSlotBits, kNumStates, kStartPosModelIndex, _CLzmaProps::lc, LenChoice, LenChoice2, LenCoder, LenHigh, LenLow, LenMid, MessageLogger_cff::limit, Literal, _CLzmaProps::lp, LZMA_LIT_SIZE, NORMALIZE, hltrates_dqm_sourceclient-live_cfg::offset, _CLzmaProps::pb, PosSlot, CLzmaDec::probs, CLzmaDec::processedPos, CLzmaDec::prop, sistrip::SpyUtilities::range(), CLzmaDec::range, CLzmaDec::remainLen, RepLenCoder, CLzmaDec::reps, SpecPos, alcazmumu_cfi::src, CLzmaDec::state, SZ_ERROR_DATA, SZ_OK, submitPVValidationJobs::t, TREE_6_DECODE, TREE_DECODE, UPDATE_0, and UPDATE_1.

Referenced by LzmaDec_DecodeReal2().

                                                                        {
   CLzmaProb *probs = p->probs;
 
   unsigned state = p->state;
   UInt32 rep0 = p->reps[0], rep1 = p->reps[1], rep2 = p->reps[2], rep3 = p->reps[3];
   unsigned pbMask = ((unsigned)1 << (p->prop.pb)) - 1;
   unsigned lpMask = ((unsigned)1 << (p->prop.lp)) - 1;
   unsigned lc = p->prop.lc;
 
   Byte *dic = p->dic;
   SizeT dicBufSize = p->dicBufSize;
   SizeT dicPos = p->dicPos;
 
   UInt32 processedPos = p->processedPos;
   UInt32 checkDicSize = p->checkDicSize;
   unsigned len = 0;
 
   const Byte *buf = p->buf;
   UInt32 range = p->range;
   UInt32 code = p->code;
 
   do {
     CLzmaProb *prob;
     UInt32 bound;
     unsigned ttt;
     unsigned posState = processedPos & pbMask;
 
     prob = probs + IsMatch + (state << kNumPosBitsMax) + posState;
     IF_BIT_0(prob) {
       unsigned symbol;
       UPDATE_0(prob);
       prob = probs + Literal;
       if (checkDicSize != 0 || processedPos != 0)
         prob += (LZMA_LIT_SIZE *
                  (((processedPos & lpMask) << lc) + (dic[(dicPos == 0 ? dicBufSize : dicPos) - 1] >> (8 - lc))));
 
       if (state < kNumLitStates) {
         state -= (state < 4) ? state : 3;
         symbol = 1;
         do {
           GET_BIT(prob + symbol, symbol)
         } while (symbol < 0x100);
       } else {
         unsigned matchByte = p->dic[(dicPos - rep0) + ((dicPos < rep0) ? dicBufSize : 0)];
         unsigned offs = 0x100;
         state -= (state < 10) ? 3 : 6;
         symbol = 1;
         do {
           unsigned bit;
           CLzmaProb *probLit;
           matchByte <<= 1;
           bit = (matchByte & offs);
           probLit = prob + offs + bit + symbol;
           GET_BIT2(probLit, symbol, offs &= ~bit, offs &= bit)
         } while (symbol < 0x100);
       }
       dic[dicPos++] = (Byte)symbol;
       processedPos++;
       continue;
     }
     else {
       UPDATE_1(prob);
       prob = probs + IsRep + state;
       IF_BIT_0(prob) {
         UPDATE_0(prob);
         state += kNumStates;
         prob = probs + LenCoder;
       }
       else {
         UPDATE_1(prob);
         if (checkDicSize == 0 && processedPos == 0)
           return SZ_ERROR_DATA;
         prob = probs + IsRepG0 + state;
         IF_BIT_0(prob) {
           UPDATE_0(prob);
           prob = probs + IsRep0Long + (state << kNumPosBitsMax) + posState;
           IF_BIT_0(prob) {
             UPDATE_0(prob);
             dic[dicPos] = dic[(dicPos - rep0) + ((dicPos < rep0) ? dicBufSize : 0)];
             dicPos++;
             processedPos++;
             state = state < kNumLitStates ? 9 : 11;
             continue;
           }
           UPDATE_1(prob);
         }
         else {
           UInt32 distance;
           UPDATE_1(prob);
           prob = probs + IsRepG1 + state;
           IF_BIT_0(prob) {
             UPDATE_0(prob);
             distance = rep1;
           }
           else {
             UPDATE_1(prob);
             prob = probs + IsRepG2 + state;
             IF_BIT_0(prob) {
               UPDATE_0(prob);
               distance = rep2;
             }
             else {
               UPDATE_1(prob);
               distance = rep3;
               rep3 = rep2;
             }
             rep2 = rep1;
           }
           rep1 = rep0;
           rep0 = distance;
         }
         state = state < kNumLitStates ? 8 : 11;
         prob = probs + RepLenCoder;
       }
       {
         unsigned limit, offset;
         CLzmaProb *probLen = prob + LenChoice;
         IF_BIT_0(probLen) {
           UPDATE_0(probLen);
           probLen = prob + LenLow + (posState << kLenNumLowBits);
           offset = 0;
           limit = (1 << kLenNumLowBits);
         }
         else {
           UPDATE_1(probLen);
           probLen = prob + LenChoice2;
           IF_BIT_0(probLen) {
             UPDATE_0(probLen);
             probLen = prob + LenMid + (posState << kLenNumMidBits);
             offset = kLenNumLowSymbols;
             limit = (1 << kLenNumMidBits);
           }
           else {
             UPDATE_1(probLen);
             probLen = prob + LenHigh;
             offset = kLenNumLowSymbols + kLenNumMidSymbols;
             limit = (1 << kLenNumHighBits);
           }
         }
         TREE_DECODE(probLen, limit, len);
         len += offset;
       }
 
       if (state >= kNumStates) {
         UInt32 distance;
         prob = probs + PosSlot + ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) << kNumPosSlotBits);
         TREE_6_DECODE(prob, distance);
         if (distance >= kStartPosModelIndex) {
           unsigned posSlot = (unsigned)distance;
           int numDirectBits = (int)(((distance >> 1) - 1));
           distance = (2 | (distance & 1));
           if (posSlot < kEndPosModelIndex) {
             distance <<= numDirectBits;
             prob = probs + SpecPos + distance - posSlot - 1;
             {
               UInt32 mask = 1;
               unsigned i = 1;
               do {
                 GET_BIT2(prob + i, i, ;, distance |= mask);
                 mask <<= 1;
               } while (--numDirectBits != 0);
             }
           } else {
             numDirectBits -= kNumAlignBits;
             do {
               NORMALIZE
               range >>= 1;
 
               {
                 UInt32 t;
                 code -= range;
                 t = (0 - ((UInt32)code >> 31)); /* (UInt32)((Int32)code >> 31) */
                 distance = (distance << 1) + (t + 1);
                 code += range & t;
               }
               /*
               distance <<= 1;
               if (code >= range)
               {
                 code -= range;
                 distance |= 1;
               }
               */
             } while (--numDirectBits != 0);
             prob = probs + Align;
             distance <<= kNumAlignBits;
             {
               unsigned i = 1;
               GET_BIT2(prob + i, i, ;, distance |= 1);
               GET_BIT2(prob + i, i, ;, distance |= 2);
               GET_BIT2(prob + i, i, ;, distance |= 4);
               GET_BIT2(prob + i, i, ;, distance |= 8);
             }
             if (distance == (UInt32)0xFFFFFFFF) {
               len += kMatchSpecLenStart;
               state -= kNumStates;
               break;
             }
           }
         }
         rep3 = rep2;
         rep2 = rep1;
         rep1 = rep0;
         rep0 = distance + 1;
         if (checkDicSize == 0) {
           if (distance >= processedPos)
             return SZ_ERROR_DATA;
         } else if (distance >= checkDicSize)
           return SZ_ERROR_DATA;
         state = (state < kNumStates + kNumLitStates) ? kNumLitStates : kNumLitStates + 3;
       }
 
       len += kMatchMinLen;
 
       if (limit == dicPos)
         return SZ_ERROR_DATA;
       {
         SizeT rem = limit - dicPos;
         unsigned curLen = ((rem < len) ? (unsigned)rem : len);
         SizeT pos = (dicPos - rep0) + ((dicPos < rep0) ? dicBufSize : 0);
 
         processedPos += curLen;
 
         len -= curLen;
         if (pos + curLen <= dicBufSize) {
           Byte *dest = dic + dicPos;
           ptrdiff_t src = (ptrdiff_t)pos - (ptrdiff_t)dicPos;
           const Byte *lim = dest + curLen;
           dicPos += curLen;
           do
             *(dest) = (Byte) * (dest + src);
           while (++dest != lim);
         } else {
           do {
             dic[dicPos++] = dic[pos];
             if (++pos == dicBufSize)
               pos = 0;
           } while (--curLen != 0);
         }
       }
     }
   } while (dicPos < limit && buf < bufLimit);
   NORMALIZE;
   p->buf = buf;
   p->range = range;
   p->code = code;
   p->remainLen = len;
   p->dicPos = dicPos;
   p->processedPos = processedPos;
   p->reps[0] = rep0;
   p->reps[1] = rep1;
   p->reps[2] = rep2;
   p->reps[3] = rep3;
   p->state = state;
 
   return SZ_OK;
 }

static int LzmaDec_DecodeReal2	(	CLzmaDec *	p,
		SizeT	limit,
		const Byte *	bufLimit
	)

static

Definition at line 467 of file LzmaDec.cc.

References CLzmaDec::buf, CLzmaDec::checkDicSize, CLzmaDec::dicPos, _CLzmaProps::dicSize, kMatchSpecLenStart, MessageLogger_cff::limit, LzmaDec_DecodeReal(), LzmaDec_WriteRem(), CLzmaDec::processedPos, CLzmaDec::prop, CLzmaDec::remainLen, and RINOK.

Referenced by LzmaDec_DecodeToDic().

                                                                                             {
   do {
     SizeT limit2 = limit;
     if (p->checkDicSize == 0) {
       UInt32 rem = p->prop.dicSize - p->processedPos;
       if (limit - p->dicPos > rem)
         limit2 = p->dicPos + rem;
     }
     RINOK(LzmaDec_DecodeReal(p, limit2, bufLimit));
     if (p->processedPos >= p->prop.dicSize)
       p->checkDicSize = p->prop.dicSize;
     LzmaDec_WriteRem(p, limit);
   } while (p->dicPos < limit && p->buf < bufLimit && p->remainLen < kMatchSpecLenStart);
 
   if (p->remainLen > kMatchSpecLenStart) {
     p->remainLen = kMatchSpecLenStart;
   }
   return 0;
 }

SRes LzmaDec_DecodeToBuf	(	CLzmaDec *	p,
		Byte *	dest,
		SizeT *	destLen,
		const Byte *	src,
		SizeT *	srcLen,
		ELzmaFinishMode	finishMode,
		ELzmaStatus *	status
	)

Definition at line 786 of file LzmaDec.cc.

References CLzmaDec::dic, CLzmaDec::dicBufSize, CLzmaDec::dicPos, LZMA_FINISH_ANY, LzmaDec_DecodeToDic(), and SZ_OK.

Referenced by LzmaFile::DecodeAll(), and LzmaFile::DecodeBuffer().

                                               {
   SizeT outSize = *destLen;
   SizeT inSize = *srcLen;
   *srcLen = *destLen = 0;
   for (;;) {
     SizeT inSizeCur = inSize, outSizeCur, dicPos;
     ELzmaFinishMode curFinishMode;
     SRes res;
     if (p->dicPos == p->dicBufSize)
       p->dicPos = 0;
     dicPos = p->dicPos;
     if (outSize > p->dicBufSize - dicPos) {
       outSizeCur = p->dicBufSize;
       curFinishMode = LZMA_FINISH_ANY;
     } else {
       outSizeCur = dicPos + outSize;
       curFinishMode = finishMode;
     }
 
     res = LzmaDec_DecodeToDic(p, outSizeCur, src, &inSizeCur, curFinishMode, status);
     src += inSizeCur;
     inSize -= inSizeCur;
     *srcLen += inSizeCur;
     outSizeCur = p->dicPos - dicPos;
     memcpy(dest, p->dic + dicPos, outSizeCur);
     dest += outSizeCur;
     outSize -= outSizeCur;
     *destLen += outSizeCur;
     if (res != 0)
       return res;
     if (outSizeCur == 0 || outSize == 0)
       return SZ_OK;
   }
 }

SRes LzmaDec_DecodeToDic	(	CLzmaDec *	p,
		SizeT	dicLimit,
		const Byte *	src,
		SizeT *	srcLen,
		ELzmaFinishMode	finishMode,
		ELzmaStatus *	status
	)

Definition at line 683 of file LzmaDec.cc.

References CLzmaDec::buf, CLzmaDec::code, CLzmaDec::dicPos, DUMMY_ERROR, DUMMY_MATCH, if(), kMatchSpecLenStart, LZMA_FINISH_ANY, LZMA_REQUIRED_INPUT_MAX, LZMA_STATUS_FINISHED_WITH_MARK, LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK, LZMA_STATUS_NEEDS_MORE_INPUT, LZMA_STATUS_NOT_FINISHED, LZMA_STATUS_NOT_SPECIFIED, LzmaDec_DecodeReal2(), LzmaDec_InitRc(), LzmaDec_InitStateReal(), LzmaDec_TryDummy(), LzmaDec_WriteRem(), CLzmaDec::needFlush, CLzmaDec::needInitState, RC_INIT_SIZE, CLzmaDec::remainLen, alcazmumu_cfi::src, SZ_ERROR_DATA, SZ_OK, CLzmaDec::tempBuf, and CLzmaDec::tempBufSize.

Referenced by LzmaDec_DecodeToBuf(), and LzmaDecode().

                                                                                                                   {
   SizeT inSize = *srcLen;
   (*srcLen) = 0;
   LzmaDec_WriteRem(p, dicLimit);
 
   *status = LZMA_STATUS_NOT_SPECIFIED;
 
   while (p->remainLen != kMatchSpecLenStart) {
     int checkEndMarkNow;
 
     if (p->needFlush != 0) {
       for (; inSize > 0 && p->tempBufSize < RC_INIT_SIZE; (*srcLen)++, inSize--)
         p->tempBuf[p->tempBufSize++] = *src++;
       if (p->tempBufSize < RC_INIT_SIZE) {
         *status = LZMA_STATUS_NEEDS_MORE_INPUT;
         return SZ_OK;
       }
       if (p->tempBuf[0] != 0)
         return SZ_ERROR_DATA;
 
       LzmaDec_InitRc(p, p->tempBuf);
       p->tempBufSize = 0;
     }
 
     checkEndMarkNow = 0;
     if (p->dicPos >= dicLimit) {
       if (p->remainLen == 0 && p->code == 0) {
         *status = LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK;
         return SZ_OK;
       }
       if (finishMode == LZMA_FINISH_ANY) {
         *status = LZMA_STATUS_NOT_FINISHED;
         return SZ_OK;
       }
       if (p->remainLen != 0) {
         *status = LZMA_STATUS_NOT_FINISHED;
         return SZ_ERROR_DATA;
       }
       checkEndMarkNow = 1;
     }
 
     if (p->needInitState)
       LzmaDec_InitStateReal(p);
 
     if (p->tempBufSize == 0) {
       SizeT processed;
       const Byte *bufLimit;
       if (inSize < LZMA_REQUIRED_INPUT_MAX || checkEndMarkNow) {
         int dummyRes = LzmaDec_TryDummy(p, src, inSize);
         if (dummyRes == DUMMY_ERROR) {
           memcpy(p->tempBuf, src, inSize);
           p->tempBufSize = (unsigned)inSize;
           (*srcLen) += inSize;
           *status = LZMA_STATUS_NEEDS_MORE_INPUT;
           return SZ_OK;
         }
         if (checkEndMarkNow && dummyRes != DUMMY_MATCH) {
           *status = LZMA_STATUS_NOT_FINISHED;
           return SZ_ERROR_DATA;
         }
         bufLimit = src;
       } else
         bufLimit = src + inSize - LZMA_REQUIRED_INPUT_MAX;
       p->buf = src;
       if (LzmaDec_DecodeReal2(p, dicLimit, bufLimit) != 0)
         return SZ_ERROR_DATA;
       processed = (SizeT)(p->buf - src);
       (*srcLen) += processed;
       src += processed;
       inSize -= processed;
     } else {
       unsigned rem = p->tempBufSize, lookAhead = 0;
       while (rem < LZMA_REQUIRED_INPUT_MAX && lookAhead < inSize)
         p->tempBuf[rem++] = src[lookAhead++];
       p->tempBufSize = rem;
       if (rem < LZMA_REQUIRED_INPUT_MAX || checkEndMarkNow) {
         int dummyRes = LzmaDec_TryDummy(p, p->tempBuf, rem);
         if (dummyRes == DUMMY_ERROR) {
           (*srcLen) += lookAhead;
           *status = LZMA_STATUS_NEEDS_MORE_INPUT;
           return SZ_OK;
         }
         if (checkEndMarkNow && dummyRes != DUMMY_MATCH) {
           *status = LZMA_STATUS_NOT_FINISHED;
           return SZ_ERROR_DATA;
         }
       }
       p->buf = p->tempBuf;
       if (LzmaDec_DecodeReal2(p, dicLimit, p->buf) != 0)
         return SZ_ERROR_DATA;
       lookAhead -= (rem - (unsigned)(p->buf - p->tempBuf));
       (*srcLen) += lookAhead;
       src += lookAhead;
       inSize -= lookAhead;
       p->tempBufSize = 0;
     }
   }
   if (p->code == 0)
     *status = LZMA_STATUS_FINISHED_WITH_MARK;
   return (p->code == 0) ? SZ_OK : SZ_ERROR_DATA;
 }

void LzmaDec_Free	(	CLzmaDec *	p,
		ISzAlloc *	alloc
	)

Definition at line 837 of file LzmaDec.cc.

References LzmaDec_FreeDict(), and LzmaDec_FreeProbs().

Referenced by LzmaFile::Close().

                                                 {
   LzmaDec_FreeProbs(p, alloc);
   LzmaDec_FreeDict(p, alloc);
 }

static void LzmaDec_FreeDict	(	CLzmaDec *	p,
		ISzAlloc *	alloc
	)

static

Definition at line 832 of file LzmaDec.cc.

References CLzmaDec::dic, and ISzAlloc::Free.

Referenced by LzmaDec_Allocate(), and LzmaDec_Free().

                                                            {
   alloc->Free(alloc, p->dic);
   p->dic = nullptr;
 }

void LzmaDec_FreeProbs	(	CLzmaDec *	p,
		ISzAlloc *	alloc
	)

Definition at line 827 of file LzmaDec.cc.

References ISzAlloc::Free, and CLzmaDec::probs.

Referenced by LzmaDec_Allocate(), LzmaDec_AllocateProbs2(), LzmaDec_Free(), and LzmaDecode().

                                                      {
   alloc->Free(alloc, p->probs);
   p->probs = nullptr;
 }

void LzmaDec_Init ( CLzmaDec * p )

Definition at line 667 of file LzmaDec.cc.

References CLzmaDec::dicPos, LzmaDec_InitDicAndState(), and True.

Referenced by LzmaDecode(), and LzmaFile::Open().

                                {
   p->dicPos = 0;
   LzmaDec_InitDicAndState(p, True, True);
 }

void LzmaDec_InitDicAndState	(	CLzmaDec *	p,
		Bool	initDic,
		Bool	initState
	)

Definition at line 653 of file LzmaDec.cc.

References CLzmaDec::checkDicSize, CLzmaDec::needFlush, CLzmaDec::needInitState, CLzmaDec::processedPos, CLzmaDec::remainLen, and CLzmaDec::tempBufSize.

Referenced by LzmaDec_Init().

                                                                         {
   p->needFlush = 1;
   p->remainLen = 0;
   p->tempBufSize = 0;
 
   if (initDic) {
     p->processedPos = 0;
     p->checkDicSize = 0;
     p->needInitState = 1;
   }
   if (initState)
     p->needInitState = 1;
 }

static void LzmaDec_InitRc	(	CLzmaDec *	p,
		const Byte *	data
	)

static

Definition at line 647 of file LzmaDec.cc.

References CLzmaDec::code, CLzmaDec::needFlush, and CLzmaDec::range.

Referenced by LzmaDec_DecodeToDic().

                                                           {
   p->code = ((UInt32)data[1] << 24) | ((UInt32)data[2] << 16) | ((UInt32)data[3] << 8) | ((UInt32)data[4]);
   p->range = 0xFFFFFFFF;
   p->needFlush = 0;
 }

static void LzmaDec_InitStateReal ( CLzmaDec * p )

static

Definition at line 672 of file LzmaDec.cc.

References CLzmaProb, mps_fire::i, kBitModelTotal, _CLzmaProps::lc, Literal, _CLzmaProps::lp, LZMA_LIT_SIZE, CLzmaDec::needInitState, CLzmaDec::probs, CLzmaDec::prop, CLzmaDec::reps, and CLzmaDec::state.

Referenced by LzmaDec_DecodeToDic().

                                                {
   UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (p->prop.lc + p->prop.lp));
   UInt32 i;
   CLzmaProb *probs = p->probs;
   for (i = 0; i < numProbs; i++)
     probs[i] = kBitModelTotal >> 1;
   p->reps[0] = p->reps[1] = p->reps[2] = p->reps[3] = 1;
   p->state = 0;
   p->needInitState = 0;
 }

static ELzmaDummy LzmaDec_TryDummy	(	const CLzmaDec *	p,
		const Byte *	buf,
		SizeT	inSize
	)

static

Definition at line 494 of file LzmaDec.cc.

References Align, CLzmaDec::checkDicSize, CLzmaProb, CLzmaDec::code, CLzmaDec::dic, CLzmaDec::dicBufSize, CLzmaDec::dicPos, DUMMY_LIT, DUMMY_MATCH, DUMMY_REP, GET_BIT2_CHECK, GET_BIT_CHECK, mps_fire::i, IF_BIT_0_CHECK, IsMatch, IsRep, IsRep0Long, IsRepG0, IsRepG1, IsRepG2, kEndPosModelIndex, kLenNumHighBits, kLenNumLowBits, kLenNumLowSymbols, kLenNumMidBits, kLenNumMidSymbols, kNumAlignBits, kNumLenToPosStates, kNumLitStates, kNumPosBitsMax, kNumPosSlotBits, kNumStates, kStartPosModelIndex, _CLzmaProps::lc, LenChoice, LenChoice2, LenCoder, LenHigh, LenLow, LenMid, MessageLogger_cff::limit, Literal, _CLzmaProps::lp, LZMA_LIT_SIZE, NORMALIZE_CHECK, hltrates_dqm_sourceclient-live_cfg::offset, _CLzmaProps::pb, PosSlot, CLzmaDec::probs, CLzmaDec::processedPos, CLzmaDec::prop, sistrip::SpyUtilities::range(), CLzmaDec::range, RepLenCoder, CLzmaDec::reps, SpecPos, CLzmaDec::state, TREE_DECODE_CHECK, UPDATE_0_CHECK, and UPDATE_1_CHECK.

Referenced by LzmaDec_DecodeToDic().

                                                                                      {
   UInt32 range = p->range;
   UInt32 code = p->code;
   const Byte *bufLimit = buf + inSize;
   CLzmaProb *probs = p->probs;
   unsigned state = p->state;
   ELzmaDummy res;
 
   {
     CLzmaProb *prob;
     UInt32 bound;
     unsigned ttt;
     unsigned posState = (p->processedPos) & ((1 << p->prop.pb) - 1);
 
     prob = probs + IsMatch + (state << kNumPosBitsMax) + posState;
     IF_BIT_0_CHECK(prob) {
       UPDATE_0_CHECK
 
       /* if (bufLimit - buf >= 7) return DUMMY_LIT; */
 
       prob = probs + Literal;
       if (p->checkDicSize != 0 || p->processedPos != 0)
         prob += (LZMA_LIT_SIZE * ((((p->processedPos) & ((1 << (p->prop.lp)) - 1)) << p->prop.lc) +
                                   (p->dic[(p->dicPos == 0 ? p->dicBufSize : p->dicPos) - 1] >> (8 - p->prop.lc))));
 
       if (state < kNumLitStates) {
         unsigned symbol = 1;
         do {
           GET_BIT_CHECK(prob + symbol, symbol)
         } while (symbol < 0x100);
       } else {
         unsigned matchByte = p->dic[p->dicPos - p->reps[0] + ((p->dicPos < p->reps[0]) ? p->dicBufSize : 0)];
         unsigned offs = 0x100;
         unsigned symbol = 1;
         do {
           unsigned bit;
           CLzmaProb *probLit;
           matchByte <<= 1;
           bit = (matchByte & offs);
           probLit = prob + offs + bit + symbol;
           GET_BIT2_CHECK(probLit, symbol, offs &= ~bit, offs &= bit)
         } while (symbol < 0x100);
       }
       res = DUMMY_LIT;
     }
     else {
       unsigned len;
       UPDATE_1_CHECK;
 
       prob = probs + IsRep + state;
       IF_BIT_0_CHECK(prob) {
         UPDATE_0_CHECK;
         state = 0;
         prob = probs + LenCoder;
         res = DUMMY_MATCH;
       }
       else {
         UPDATE_1_CHECK;
         res = DUMMY_REP;
         prob = probs + IsRepG0 + state;
         IF_BIT_0_CHECK(prob) {
           UPDATE_0_CHECK;
           prob = probs + IsRep0Long + (state << kNumPosBitsMax) + posState;
           IF_BIT_0_CHECK(prob) {
             UPDATE_0_CHECK;
             NORMALIZE_CHECK;
             return DUMMY_REP;
           }
           else {
             UPDATE_1_CHECK;
           }
         }
         else {
           UPDATE_1_CHECK;
           prob = probs + IsRepG1 + state;
           IF_BIT_0_CHECK(prob) { UPDATE_0_CHECK; }
           else {
             UPDATE_1_CHECK;
             prob = probs + IsRepG2 + state;
             IF_BIT_0_CHECK(prob) { UPDATE_0_CHECK; }
             else {
               UPDATE_1_CHECK;
             }
           }
         }
         state = kNumStates;
         prob = probs + RepLenCoder;
       }
       {
         unsigned limit, offset;
         CLzmaProb *probLen = prob + LenChoice;
         IF_BIT_0_CHECK(probLen) {
           UPDATE_0_CHECK;
           probLen = prob + LenLow + (posState << kLenNumLowBits);
           offset = 0;
           limit = 1 << kLenNumLowBits;
         }
         else {
           UPDATE_1_CHECK;
           probLen = prob + LenChoice2;
           IF_BIT_0_CHECK(probLen) {
             UPDATE_0_CHECK;
             probLen = prob + LenMid + (posState << kLenNumMidBits);
             offset = kLenNumLowSymbols;
             limit = 1 << kLenNumMidBits;
           }
           else {
             UPDATE_1_CHECK;
             probLen = prob + LenHigh;
             offset = kLenNumLowSymbols + kLenNumMidSymbols;
             limit = 1 << kLenNumHighBits;
           }
         }
         TREE_DECODE_CHECK(probLen, limit, len);
         len += offset;
       }
 
       if (state < 4) {
         unsigned posSlot;
         prob = probs + PosSlot + ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) << kNumPosSlotBits);
         TREE_DECODE_CHECK(prob, 1 << kNumPosSlotBits, posSlot);
         if (posSlot >= kStartPosModelIndex) {
           int numDirectBits = ((posSlot >> 1) - 1);
 
           /* if (bufLimit - buf >= 8) return DUMMY_MATCH; */
 
           if (posSlot < kEndPosModelIndex) {
             prob = probs + SpecPos + ((2 | (posSlot & 1)) << numDirectBits) - posSlot - 1;
           } else {
             numDirectBits -= kNumAlignBits;
             do {
               NORMALIZE_CHECK
               range >>= 1;
               code -= range & (((code - range) >> 31) - 1);
               /* if (code >= range) code -= range; */
             } while (--numDirectBits != 0);
             prob = probs + Align;
             numDirectBits = kNumAlignBits;
           }
           {
             unsigned i = 1;
             do {
               GET_BIT_CHECK(prob + i, i);
             } while (--numDirectBits != 0);
           }
         }
       }
     }
   }
   NORMALIZE_CHECK;
   return res;
 }

static void LzmaDec_WriteRem	(	CLzmaDec *	p,
		SizeT	limit
	)

static

Definition at line 444 of file LzmaDec.cc.

References CLzmaDec::checkDicSize, CLzmaDec::dic, CLzmaDec::dicBufSize, CLzmaDec::dicPos, _CLzmaProps::dicSize, kMatchSpecLenStart, CLzmaDec::processedPos, CLzmaDec::prop, CLzmaDec::remainLen, and CLzmaDec::reps.

Referenced by LzmaDec_DecodeReal2(), and LzmaDec_DecodeToDic().

                                                                     {
   if (p->remainLen != 0 && p->remainLen < kMatchSpecLenStart) {
     Byte *dic = p->dic;
     SizeT dicPos = p->dicPos;
     SizeT dicBufSize = p->dicBufSize;
     unsigned len = p->remainLen;
     UInt32 rep0 = p->reps[0];
     if (limit - dicPos < len)
       len = (unsigned)(limit - dicPos);
 
     if (p->checkDicSize == 0 && p->prop.dicSize - p->processedPos <= len)
       p->checkDicSize = p->prop.dicSize;
 
     p->processedPos += len;
     p->remainLen -= len;
     while (len-- != 0) {
       dic[dicPos] = dic[(dicPos - rep0) + ((dicPos < rep0) ? dicBufSize : 0)];
       dicPos++;
     }
     p->dicPos = dicPos;
   }
 }

SRes LzmaDecode	(	Byte *	dest,
		SizeT *	destLen,
		const Byte *	src,
		SizeT *	srcLen,
		const Byte *	propData,
		unsigned	propSize,
		ELzmaFinishMode	finishMode,
		ELzmaStatus *	status,
		ISzAlloc *	alloc
	)

Definition at line 906 of file LzmaDec.cc.

References alignCSCRings::dest, CLzmaDec::dic, CLzmaDec::dicBufSize, CLzmaDec::dicPos, LZMA_STATUS_NEEDS_MORE_INPUT, LzmaDec_AllocateProbs(), LzmaDec_Construct, LzmaDec_DecodeToDic(), LzmaDec_FreeProbs(), LzmaDec_Init(), AlCaHLTBitMon_ParallelJobs::p, RC_INIT_SIZE, SZ_ERROR_INPUT_EOF, and SZ_OK.

                                  {
   CLzmaDec p;
   SRes res;
   SizeT inSize = *srcLen;
   SizeT outSize = *destLen;
   *srcLen = *destLen = 0;
   if (inSize < RC_INIT_SIZE)
     return SZ_ERROR_INPUT_EOF;
 
   LzmaDec_Construct(&p);
   res = LzmaDec_AllocateProbs(&p, propData, propSize, alloc);
   if (res != 0)
     return res;
   p.dic = dest;
   p.dicBufSize = outSize;
 
   LzmaDec_Init(&p);
 
   *srcLen = inSize;
   res = LzmaDec_DecodeToDic(&p, outSize, src, srcLen, finishMode, status);
 
   if (res == SZ_OK && *status == LZMA_STATUS_NEEDS_MORE_INPUT)
     res = SZ_ERROR_INPUT_EOF;
 
   (*destLen) = p.dicPos;
   LzmaDec_FreeProbs(&p, alloc);
   return res;
 }

SRes LzmaProps_Decode	(	CLzmaProps *	p,
		const Byte *	data,
		unsigned	size
	)

Definition at line 842 of file LzmaDec.cc.

References ztail::d, _CLzmaProps::dicSize, _CLzmaProps::lc, _CLzmaProps::lp, LZMA_DIC_MIN, LZMA_PROPS_SIZE, _CLzmaProps::pb, SZ_ERROR_UNSUPPORTED, and SZ_OK.

Referenced by LzmaDec_Allocate(), and LzmaDec_AllocateProbs().

                                                                       {
   UInt32 dicSize;
   Byte d;
 
   if (size < LZMA_PROPS_SIZE)
     return SZ_ERROR_UNSUPPORTED;
   else
     dicSize = data[1] | ((UInt32)data[2] << 8) | ((UInt32)data[3] << 16) | ((UInt32)data[4] << 24);
 
   if (dicSize < LZMA_DIC_MIN)
     dicSize = LZMA_DIC_MIN;
   p->dicSize = dicSize;
 
   d = data[0];
   if (d >= (9 * 5 * 5))
     return SZ_ERROR_UNSUPPORTED;
 
   p->lc = d % 9;
   d /= 9;
   p->pb = d / 5;
   p->lp = d % 5;
 
   return SZ_OK;
 }

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