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3149 lines (2645 loc) · 78.8 KB
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/* LzmaEnc.c -- LZMA Encoder
Igor Pavlov : Public domain */
#include "Precomp.h"
#include <string.h>
/* #define SHOW_STAT */
/* #define SHOW_STAT2 */
#if defined(SHOW_STAT) || defined(SHOW_STAT2)
#include <stdio.h>
#endif
#include "CpuArch.h"
#include "LzmaEnc.h"
#include "LzFind.h"
#ifndef Z7_ST
#include "LzFindMt.h"
#endif
/* the following LzmaEnc_* declarations is internal LZMA interface for LZMA2 encoder */
SRes LzmaEnc_PrepareForLzma2(CLzmaEncHandle p, ISeqInStreamPtr inStream, UInt32 keepWindowSize,
ISzAllocPtr alloc, ISzAllocPtr allocBig);
SRes LzmaEnc_MemPrepare(CLzmaEncHandle p, const Byte *src, SizeT srcLen,
UInt32 keepWindowSize, ISzAllocPtr alloc, ISzAllocPtr allocBig);
SRes LzmaEnc_CodeOneMemBlock(CLzmaEncHandle p, BoolInt reInit,
Byte *dest, size_t *destLen, UInt32 desiredPackSize, UInt32 *unpackSize);
const Byte *LzmaEnc_GetCurBuf(CLzmaEncHandle p);
void LzmaEnc_Finish(CLzmaEncHandle p);
void LzmaEnc_SaveState(CLzmaEncHandle p);
void LzmaEnc_RestoreState(CLzmaEncHandle p);
#ifdef SHOW_STAT
static unsigned g_STAT_OFFSET = 0;
#endif
/* for good normalization speed we still reserve 256 MB before 4 GB range */
#define kLzmaMaxHistorySize ((UInt32)15 << 28)
// #define kNumTopBits 24
#define kTopValue ((UInt32)1 << 24)
#define kNumBitModelTotalBits 11
#define kBitModelTotal (1 << kNumBitModelTotalBits)
#define kNumMoveBits 5
#define kProbInitValue (kBitModelTotal >> 1)
#define kNumMoveReducingBits 4
#define kNumBitPriceShiftBits 4
// #define kBitPrice (1 << kNumBitPriceShiftBits)
#define REP_LEN_COUNT 64
void LzmaEncProps_Init(CLzmaEncProps *p)
{
p->level = 5;
p->dictSize = p->mc = 0;
p->reduceSize = (UInt64)(Int64)-1;
p->lc = p->lp = p->pb = p->algo = p->fb = p->btMode = p->numHashBytes = p->numThreads = -1;
p->numHashOutBits = 0;
p->writeEndMark = 0;
p->affinityGroup = -1;
p->affinity = 0;
p->affinityInGroup = 0;
}
void LzmaEncProps_Normalize(CLzmaEncProps *p)
{
int level = p->level;
if (level < 0) level = 5;
p->level = level;
if (p->dictSize == 0)
p->dictSize = (unsigned)level <= 4 ?
(UInt32)1 << (level * 2 + 16) :
(unsigned)level <= sizeof(size_t) / 2 + 4 ?
(UInt32)1 << (level + 20) :
(UInt32)1 << (sizeof(size_t) / 2 + 24);
if (p->dictSize > p->reduceSize)
{
UInt32 v = (UInt32)p->reduceSize;
const UInt32 kReduceMin = ((UInt32)1 << 12);
if (v < kReduceMin)
v = kReduceMin;
if (p->dictSize > v)
p->dictSize = v;
}
if (p->lc < 0) p->lc = 3;
if (p->lp < 0) p->lp = 0;
if (p->pb < 0) p->pb = 2;
if (p->algo < 0) p->algo = (unsigned)level < 5 ? 0 : 1;
if (p->fb < 0) p->fb = (unsigned)level < 7 ? 32 : 64;
if (p->btMode < 0) p->btMode = (p->algo == 0 ? 0 : 1);
if (p->numHashBytes < 0) p->numHashBytes = (p->btMode ? 4 : 5);
if (p->mc == 0) p->mc = (16 + ((unsigned)p->fb >> 1)) >> (p->btMode ? 0 : 1);
if (p->numThreads < 0)
p->numThreads =
#ifndef Z7_ST
((p->btMode && p->algo) ? 2 : 1);
#else
1;
#endif
}
UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2)
{
CLzmaEncProps props = *props2;
LzmaEncProps_Normalize(&props);
return props.dictSize;
}
/*
x86/x64:
BSR:
IF (SRC == 0) ZF = 1, DEST is undefined;
AMD : DEST is unchanged;
IF (SRC != 0) ZF = 0; DEST is index of top non-zero bit
BSR is slow in some processors
LZCNT:
IF (SRC == 0) CF = 1, DEST is size_in_bits_of_register(src) (32 or 64)
IF (SRC != 0) CF = 0, DEST = num_lead_zero_bits
IF (DEST == 0) ZF = 1;
LZCNT works only in new processors starting from Haswell.
if LZCNT is not supported by processor, then it's executed as BSR.
LZCNT can be faster than BSR, if supported.
*/
// #define LZMA_LOG_BSR
#if defined(MY_CPU_ARM_OR_ARM64) /* || defined(MY_CPU_X86_OR_AMD64) */
#if (defined(__clang__) && (__clang_major__ >= 6)) \
|| (defined(__GNUC__) && (__GNUC__ >= 6))
#define LZMA_LOG_BSR
#elif defined(_MSC_VER) && (_MSC_VER >= 1300)
// #if defined(MY_CPU_ARM_OR_ARM64)
#define LZMA_LOG_BSR
// #endif
#endif
#endif
// #include <intrin.h>
#ifdef LZMA_LOG_BSR
#if defined(__clang__) \
|| defined(__GNUC__)
/*
C code: : (30 - __builtin_clz(x))
gcc9/gcc10 for x64 /x86 : 30 - (bsr(x) xor 31)
clang10 for x64 : 31 + (bsr(x) xor -32)
*/
#define MY_clz(x) ((unsigned)__builtin_clz(x))
// __lzcnt32
// __builtin_ia32_lzcnt_u32
#else // #if defined(_MSC_VER)
#ifdef MY_CPU_ARM_OR_ARM64
#define MY_clz _CountLeadingZeros
#else // if defined(MY_CPU_X86_OR_AMD64)
// #define MY_clz __lzcnt // we can use lzcnt (unsupported by old CPU)
// _BitScanReverse code is not optimal for some MSVC compilers
#define BSR2_RET(pos, res) { unsigned long zz; _BitScanReverse(&zz, (pos)); zz--; \
res = (zz + zz) + (pos >> zz); }
#endif // MY_CPU_X86_OR_AMD64
#endif // _MSC_VER
#ifndef BSR2_RET
#define BSR2_RET(pos, res) { unsigned zz = 30 - MY_clz(pos); \
res = (zz + zz) + (pos >> zz); }
#endif
unsigned GetPosSlot1(UInt32 pos);
unsigned GetPosSlot1(UInt32 pos)
{
unsigned res;
BSR2_RET(pos, res)
return res;
}
#define GetPosSlot2(pos, res) { BSR2_RET(pos, res) }
#define GetPosSlot(pos, res) { if (pos < 2) res = pos; else BSR2_RET(pos, res) }
#else // ! LZMA_LOG_BSR
#define kNumLogBits (11 + sizeof(size_t) / 8 * 3)
#define kDicLogSizeMaxCompress ((kNumLogBits - 1) * 2 + 7)
static void LzmaEnc_FastPosInit(Byte *g_FastPos)
{
unsigned slot;
g_FastPos[0] = 0;
g_FastPos[1] = 1;
g_FastPos += 2;
for (slot = 2; slot < kNumLogBits * 2; slot++)
{
size_t k = ((size_t)1 << ((slot >> 1) - 1));
size_t j;
for (j = 0; j < k; j++)
g_FastPos[j] = (Byte)slot;
g_FastPos += k;
}
}
/* we can use ((limit - pos) >> 31) only if (pos < ((UInt32)1 << 31)) */
/*
#define BSR2_RET(pos, res) { unsigned zz = 6 + ((kNumLogBits - 1) & \
(0 - (((((UInt32)1 << (kNumLogBits + 6)) - 1) - pos) >> 31))); \
res = p->g_FastPos[pos >> zz] + (zz * 2); }
*/
/*
#define BSR2_RET(pos, res) { unsigned zz = 6 + ((kNumLogBits - 1) & \
(0 - (((((UInt32)1 << (kNumLogBits)) - 1) - (pos >> 6)) >> 31))); \
res = p->g_FastPos[pos >> zz] + (zz * 2); }
*/
#define BSR2_RET(pos, res) { unsigned zz = (pos < (1 << (kNumLogBits + 6))) ? 6 : 6 + kNumLogBits - 1; \
res = p->g_FastPos[pos >> zz] + (zz * 2); }
/*
#define BSR2_RET(pos, res) { res = (pos < (1 << (kNumLogBits + 6))) ? \
p->g_FastPos[pos >> 6] + 12 : \
p->g_FastPos[pos >> (6 + kNumLogBits - 1)] + (6 + (kNumLogBits - 1)) * 2; }
*/
#define GetPosSlot1(pos) p->g_FastPos[pos]
#define GetPosSlot2(pos, res) { BSR2_RET(pos, res); }
#define GetPosSlot(pos, res) { if (pos < kNumFullDistances) res = p->g_FastPos[pos & (kNumFullDistances - 1)]; else BSR2_RET(pos, res); }
#endif // LZMA_LOG_BSR
#define LZMA_NUM_REPS 4
typedef UInt16 CState;
typedef UInt16 CExtra;
typedef struct
{
UInt32 price;
CState state;
CExtra extra;
// 0 : normal
// 1 : LIT : MATCH
// > 1 : MATCH (extra-1) : LIT : REP0 (len)
UInt32 len;
UInt32 dist;
UInt32 reps[LZMA_NUM_REPS];
} COptimal;
// 18.06
#define kNumOpts (1 << 11)
#define kPackReserve (kNumOpts * 8)
// #define kNumOpts (1 << 12)
// #define kPackReserve (1 + kNumOpts * 2)
#define kNumLenToPosStates 4
#define kNumPosSlotBits 6
// #define kDicLogSizeMin 0
#define kDicLogSizeMax 32
#define kDistTableSizeMax (kDicLogSizeMax * 2)
#define kNumAlignBits 4
#define kAlignTableSize (1 << kNumAlignBits)
#define kAlignMask (kAlignTableSize - 1)
#define kStartPosModelIndex 4
#define kEndPosModelIndex 14
#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
typedef
#ifdef Z7_LZMA_PROB32
UInt32
#else
UInt16
#endif
CLzmaProb;
#define LZMA_PB_MAX 4
#define LZMA_LC_MAX 8
#define LZMA_LP_MAX 4
#define LZMA_NUM_PB_STATES_MAX (1 << LZMA_PB_MAX)
#define kLenNumLowBits 3
#define kLenNumLowSymbols (1 << kLenNumLowBits)
#define kLenNumHighBits 8
#define kLenNumHighSymbols (1 << kLenNumHighBits)
#define kLenNumSymbolsTotal (kLenNumLowSymbols * 2 + kLenNumHighSymbols)
#define LZMA_MATCH_LEN_MIN 2
#define LZMA_MATCH_LEN_MAX (LZMA_MATCH_LEN_MIN + kLenNumSymbolsTotal - 1)
#define kNumStates 12
typedef struct
{
CLzmaProb low[LZMA_NUM_PB_STATES_MAX << (kLenNumLowBits + 1)];
CLzmaProb high[kLenNumHighSymbols];
} CLenEnc;
typedef struct
{
unsigned tableSize;
UInt32 prices[LZMA_NUM_PB_STATES_MAX][kLenNumSymbolsTotal];
// UInt32 prices1[LZMA_NUM_PB_STATES_MAX][kLenNumLowSymbols * 2];
// UInt32 prices2[kLenNumSymbolsTotal];
} CLenPriceEnc;
#define GET_PRICE_LEN(p, posState, len) \
((p)->prices[posState][(size_t)(len) - LZMA_MATCH_LEN_MIN])
/*
#define GET_PRICE_LEN(p, posState, len) \
((p)->prices2[(size_t)(len) - 2] + ((p)->prices1[posState][((len) - 2) & (kLenNumLowSymbols * 2 - 1)] & (((len) - 2 - kLenNumLowSymbols * 2) >> 9)))
*/
typedef struct
{
UInt32 range;
unsigned cache;
UInt64 low;
UInt64 cacheSize;
Byte *buf;
Byte *bufLim;
Byte *bufBase;
ISeqOutStreamPtr outStream;
UInt64 processed;
SRes res;
} CRangeEnc;
typedef struct
{
CLzmaProb *litProbs;
unsigned state;
UInt32 reps[LZMA_NUM_REPS];
CLzmaProb posAlignEncoder[1 << kNumAlignBits];
CLzmaProb isRep[kNumStates];
CLzmaProb isRepG0[kNumStates];
CLzmaProb isRepG1[kNumStates];
CLzmaProb isRepG2[kNumStates];
CLzmaProb isMatch[kNumStates][LZMA_NUM_PB_STATES_MAX];
CLzmaProb isRep0Long[kNumStates][LZMA_NUM_PB_STATES_MAX];
CLzmaProb posSlotEncoder[kNumLenToPosStates][1 << kNumPosSlotBits];
CLzmaProb posEncoders[kNumFullDistances];
CLenEnc lenProbs;
CLenEnc repLenProbs;
} CSaveState;
typedef UInt32 CProbPrice;
struct CLzmaEnc
{
void *matchFinderObj;
IMatchFinder2 matchFinder;
unsigned optCur;
unsigned optEnd;
unsigned longestMatchLen;
unsigned numPairs;
UInt32 numAvail;
unsigned state;
unsigned numFastBytes;
unsigned additionalOffset;
UInt32 reps[LZMA_NUM_REPS];
unsigned lpMask, pbMask;
CLzmaProb *litProbs;
CRangeEnc rc;
UInt32 backRes;
unsigned lc, lp, pb;
unsigned lclp;
BoolInt fastMode;
BoolInt writeEndMark;
BoolInt finished;
BoolInt multiThread;
BoolInt needInit;
// BoolInt _maxMode;
UInt64 nowPos64;
unsigned matchPriceCount;
// unsigned alignPriceCount;
int repLenEncCounter;
unsigned distTableSize;
UInt32 dictSize;
SRes result;
#ifndef Z7_ST
BoolInt mtMode;
// begin of CMatchFinderMt is used in LZ thread
CMatchFinderMt matchFinderMt;
// end of CMatchFinderMt is used in BT and HASH threads
// #else
// CMatchFinder matchFinderBase;
#endif
CMatchFinder matchFinderBase;
// we suppose that we have 8-bytes alignment after CMatchFinder
#ifndef Z7_ST
Byte pad[128];
#endif
// LZ thread
CProbPrice ProbPrices[kBitModelTotal >> kNumMoveReducingBits];
// we want {len , dist} pairs to be 8-bytes aligned in matches array
UInt32 matches[LZMA_MATCH_LEN_MAX * 2 + 2];
// we want 8-bytes alignment here
UInt32 alignPrices[kAlignTableSize];
UInt32 posSlotPrices[kNumLenToPosStates][kDistTableSizeMax];
UInt32 distancesPrices[kNumLenToPosStates][kNumFullDistances];
CLzmaProb posAlignEncoder[1 << kNumAlignBits];
CLzmaProb isRep[kNumStates];
CLzmaProb isRepG0[kNumStates];
CLzmaProb isRepG1[kNumStates];
CLzmaProb isRepG2[kNumStates];
CLzmaProb isMatch[kNumStates][LZMA_NUM_PB_STATES_MAX];
CLzmaProb isRep0Long[kNumStates][LZMA_NUM_PB_STATES_MAX];
CLzmaProb posSlotEncoder[kNumLenToPosStates][1 << kNumPosSlotBits];
CLzmaProb posEncoders[kNumFullDistances];
CLenEnc lenProbs;
CLenEnc repLenProbs;
#ifndef LZMA_LOG_BSR
Byte g_FastPos[1 << kNumLogBits];
#endif
CLenPriceEnc lenEnc;
CLenPriceEnc repLenEnc;
COptimal opt[kNumOpts];
CSaveState saveState;
// BoolInt mf_Failure;
#ifndef Z7_ST
Byte pad2[128];
#endif
};
#define MFB (p->matchFinderBase)
/*
#ifndef Z7_ST
#define MFB (p->matchFinderMt.MatchFinder)
#endif
*/
// #define GET_CLzmaEnc_p CLzmaEnc *p = (CLzmaEnc*)(void *)p;
// #define GET_const_CLzmaEnc_p const CLzmaEnc *p = (const CLzmaEnc*)(const void *)p;
#define COPY_ARR(dest, src, arr) memcpy((dest)->arr, (src)->arr, sizeof((src)->arr));
#define COPY_LZMA_ENC_STATE(d, s, p) \
(d)->state = (s)->state; \
COPY_ARR(d, s, reps) \
COPY_ARR(d, s, posAlignEncoder) \
COPY_ARR(d, s, isRep) \
COPY_ARR(d, s, isRepG0) \
COPY_ARR(d, s, isRepG1) \
COPY_ARR(d, s, isRepG2) \
COPY_ARR(d, s, isMatch) \
COPY_ARR(d, s, isRep0Long) \
COPY_ARR(d, s, posSlotEncoder) \
COPY_ARR(d, s, posEncoders) \
(d)->lenProbs = (s)->lenProbs; \
(d)->repLenProbs = (s)->repLenProbs; \
memcpy((d)->litProbs, (s)->litProbs, ((size_t)0x300 * sizeof(CLzmaProb)) << (p)->lclp);
void LzmaEnc_SaveState(CLzmaEncHandle p)
{
// GET_CLzmaEnc_p
CSaveState *v = &p->saveState;
COPY_LZMA_ENC_STATE(v, p, p)
}
void LzmaEnc_RestoreState(CLzmaEncHandle p)
{
// GET_CLzmaEnc_p
const CSaveState *v = &p->saveState;
COPY_LZMA_ENC_STATE(p, v, p)
}
Z7_NO_INLINE
SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props2)
{
// GET_CLzmaEnc_p
CLzmaEncProps props = *props2;
LzmaEncProps_Normalize(&props);
if (props.lc > LZMA_LC_MAX
|| props.lp > LZMA_LP_MAX
|| props.pb > LZMA_PB_MAX)
return SZ_ERROR_PARAM;
if (props.dictSize > kLzmaMaxHistorySize)
props.dictSize = kLzmaMaxHistorySize;
#ifndef LZMA_LOG_BSR
{
const UInt64 dict64 = props.dictSize;
if (dict64 > ((UInt64)1 << kDicLogSizeMaxCompress))
return SZ_ERROR_PARAM;
}
#endif
p->dictSize = props.dictSize;
{
unsigned fb = (unsigned)props.fb;
if (fb < 5)
fb = 5;
if (fb > LZMA_MATCH_LEN_MAX)
fb = LZMA_MATCH_LEN_MAX;
p->numFastBytes = fb;
}
p->lc = (unsigned)props.lc;
p->lp = (unsigned)props.lp;
p->pb = (unsigned)props.pb;
p->fastMode = (props.algo == 0);
// p->_maxMode = True;
MFB.btMode = (Byte)(props.btMode ? 1 : 0);
// MFB.btMode = (Byte)(props.btMode);
{
unsigned numHashBytes = 4;
if (props.btMode)
{
if (props.numHashBytes < 2) numHashBytes = 2;
else if (props.numHashBytes < 4) numHashBytes = (unsigned)props.numHashBytes;
}
if (props.numHashBytes >= 5) numHashBytes = 5;
MFB.numHashBytes = numHashBytes;
// MFB.numHashBytes_Min = 2;
MFB.numHashOutBits = (Byte)props.numHashOutBits;
}
MFB.cutValue = props.mc;
p->writeEndMark = (BoolInt)props.writeEndMark;
#ifndef Z7_ST
/*
if (newMultiThread != _multiThread)
{
ReleaseMatchFinder();
_multiThread = newMultiThread;
}
*/
p->multiThread = (props.numThreads > 1);
p->matchFinderMt.btSync.affinity =
p->matchFinderMt.hashSync.affinity = props.affinity;
p->matchFinderMt.btSync.affinityGroup =
p->matchFinderMt.hashSync.affinityGroup = props.affinityGroup;
p->matchFinderMt.btSync.affinityInGroup =
p->matchFinderMt.hashSync.affinityInGroup = props.affinityInGroup;
#endif
return SZ_OK;
}
void LzmaEnc_SetDataSize(CLzmaEncHandle p, UInt64 expectedDataSiize)
{
// GET_CLzmaEnc_p
MFB.expectedDataSize = expectedDataSiize;
}
#define kState_Start 0
#define kState_LitAfterMatch 4
#define kState_LitAfterRep 5
#define kState_MatchAfterLit 7
#define kState_RepAfterLit 8
static const Byte kLiteralNextStates[kNumStates] = {0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 4, 5};
static const Byte kMatchNextStates[kNumStates] = {7, 7, 7, 7, 7, 7, 7, 10, 10, 10, 10, 10};
static const Byte kRepNextStates[kNumStates] = {8, 8, 8, 8, 8, 8, 8, 11, 11, 11, 11, 11};
static const Byte kShortRepNextStates[kNumStates]= {9, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11};
#define IsLitState(s) ((s) < 7)
#define GetLenToPosState2(len) (((len) < kNumLenToPosStates - 1) ? (len) : kNumLenToPosStates - 1)
#define GetLenToPosState(len) (((len) < kNumLenToPosStates + 1) ? (len) - 2 : kNumLenToPosStates - 1)
#define kInfinityPrice (1 << 30)
static void RangeEnc_Construct(CRangeEnc *p)
{
p->outStream = NULL;
p->bufBase = NULL;
}
#define RangeEnc_GetProcessed(p) ( (p)->processed + (size_t)((p)->buf - (p)->bufBase) + (p)->cacheSize)
#define RangeEnc_GetProcessed_sizet(p) ((size_t)(p)->processed + (size_t)((p)->buf - (p)->bufBase) + (size_t)(p)->cacheSize)
#define RC_BUF_SIZE (1 << 16)
static int RangeEnc_Alloc(CRangeEnc *p, ISzAllocPtr alloc)
{
if (!p->bufBase)
{
p->bufBase = (Byte *)ISzAlloc_Alloc(alloc, RC_BUF_SIZE);
if (!p->bufBase)
return 0;
p->bufLim = p->bufBase + RC_BUF_SIZE;
}
return 1;
}
static void RangeEnc_Free(CRangeEnc *p, ISzAllocPtr alloc)
{
ISzAlloc_Free(alloc, p->bufBase);
p->bufBase = NULL;
}
static void RangeEnc_Init(CRangeEnc *p)
{
p->range = 0xFFFFFFFF;
p->cache = 0;
p->low = 0;
p->cacheSize = 0;
p->buf = p->bufBase;
p->processed = 0;
p->res = SZ_OK;
}
Z7_NO_INLINE static void RangeEnc_FlushStream(CRangeEnc *p)
{
const size_t num = (size_t)(p->buf - p->bufBase);
if (p->res == SZ_OK)
{
if (num != ISeqOutStream_Write(p->outStream, p->bufBase, num))
p->res = SZ_ERROR_WRITE;
}
p->processed += num;
p->buf = p->bufBase;
}
Z7_NO_INLINE static void Z7_FASTCALL RangeEnc_ShiftLow(CRangeEnc *p)
{
UInt32 low = (UInt32)p->low;
unsigned high = (unsigned)(p->low >> 32);
p->low = (UInt32)(low << 8);
if (low < (UInt32)0xFF000000 || high != 0)
{
{
Byte *buf = p->buf;
*buf++ = (Byte)(p->cache + high);
p->cache = (unsigned)(low >> 24);
p->buf = buf;
if (buf == p->bufLim)
RangeEnc_FlushStream(p);
if (p->cacheSize == 0)
return;
}
high += 0xFF;
for (;;)
{
Byte *buf = p->buf;
*buf++ = (Byte)(high);
p->buf = buf;
if (buf == p->bufLim)
RangeEnc_FlushStream(p);
if (--p->cacheSize == 0)
return;
}
}
p->cacheSize++;
}
static void RangeEnc_FlushData(CRangeEnc *p)
{
int i;
for (i = 0; i < 5; i++)
RangeEnc_ShiftLow(p);
}
#define RC_NORM(p) if (range < kTopValue) { range <<= 8; RangeEnc_ShiftLow(p); }
#define RC_BIT_PRE(p, prob) \
ttt = *(prob); \
newBound = (range >> kNumBitModelTotalBits) * ttt;
// #define Z7_LZMA_ENC_USE_BRANCH
#ifdef Z7_LZMA_ENC_USE_BRANCH
#define RC_BIT(p, prob, bit) { \
RC_BIT_PRE(p, prob) \
if (bit == 0) { range = newBound; ttt += (kBitModelTotal - ttt) >> kNumMoveBits; } \
else { (p)->low += newBound; range -= newBound; ttt -= ttt >> kNumMoveBits; } \
*(prob) = (CLzmaProb)ttt; \
RC_NORM(p) \
}
#else
#define RC_BIT(p, prob, bit) { \
UInt32 mask; \
RC_BIT_PRE(p, prob) \
mask = 0 - (UInt32)bit; \
range &= mask; \
mask &= newBound; \
range -= mask; \
(p)->low += mask; \
mask = (UInt32)bit - 1; \
range += newBound & mask; \
mask &= (kBitModelTotal - ((1 << kNumMoveBits) - 1)); \
mask += ((1 << kNumMoveBits) - 1); \
ttt += (UInt32)((Int32)(mask - ttt) >> kNumMoveBits); \
*(prob) = (CLzmaProb)ttt; \
RC_NORM(p) \
}
#endif
#define RC_BIT_0_BASE(p, prob) \
range = newBound; *(prob) = (CLzmaProb)(ttt + ((kBitModelTotal - ttt) >> kNumMoveBits));
#define RC_BIT_1_BASE(p, prob) \
range -= newBound; (p)->low += newBound; *(prob) = (CLzmaProb)(ttt - (ttt >> kNumMoveBits)); \
#define RC_BIT_0(p, prob) \
RC_BIT_0_BASE(p, prob) \
RC_NORM(p)
#define RC_BIT_1(p, prob) \
RC_BIT_1_BASE(p, prob) \
RC_NORM(p)
static void RangeEnc_EncodeBit_0(CRangeEnc *p, CLzmaProb *prob)
{
UInt32 range, ttt, newBound;
range = p->range;
RC_BIT_PRE(p, prob)
RC_BIT_0(p, prob)
p->range = range;
}
static void LitEnc_Encode(CRangeEnc *p, CLzmaProb *probs, UInt32 sym)
{
UInt32 range = p->range;
sym |= 0x100;
do
{
UInt32 ttt, newBound;
// RangeEnc_EncodeBit(p, probs + (sym >> 8), (sym >> 7) & 1);
CLzmaProb *prob = probs + (sym >> 8);
UInt32 bit = (sym >> 7) & 1;
sym <<= 1;
RC_BIT(p, prob, bit)
}
while (sym < 0x10000);
p->range = range;
}
static void LitEnc_EncodeMatched(CRangeEnc *p, CLzmaProb *probs, UInt32 sym, UInt32 matchByte)
{
UInt32 range = p->range;
UInt32 offs = 0x100;
sym |= 0x100;
do
{
UInt32 ttt, newBound;
CLzmaProb *prob;
UInt32 bit;
matchByte <<= 1;
// RangeEnc_EncodeBit(p, probs + (offs + (matchByte & offs) + (sym >> 8)), (sym >> 7) & 1);
prob = probs + (offs + (matchByte & offs) + (sym >> 8));
bit = (sym >> 7) & 1;
sym <<= 1;
offs &= ~(matchByte ^ sym);
RC_BIT(p, prob, bit)
}
while (sym < 0x10000);
p->range = range;
}
static void LzmaEnc_InitPriceTables(CProbPrice *ProbPrices)
{
UInt32 i;
for (i = 0; i < (kBitModelTotal >> kNumMoveReducingBits); i++)
{
const unsigned kCyclesBits = kNumBitPriceShiftBits;
UInt32 w = (i << kNumMoveReducingBits) + (1 << (kNumMoveReducingBits - 1));
unsigned bitCount = 0;
unsigned j;
for (j = 0; j < kCyclesBits; j++)
{
w = w * w;
bitCount <<= 1;
while (w >= ((UInt32)1 << 16))
{
w >>= 1;
bitCount++;
}
}
ProbPrices[i] = (CProbPrice)(((unsigned)kNumBitModelTotalBits << kCyclesBits) - 15 - bitCount);
// printf("\n%3d: %5d", i, ProbPrices[i]);
}
}
#define GET_PRICE(prob, bit) \
p->ProbPrices[((prob) ^ (unsigned)(((-(int)(bit))) & (kBitModelTotal - 1))) >> kNumMoveReducingBits]
#define GET_PRICEa(prob, bit) \
ProbPrices[((prob) ^ (unsigned)((-((int)(bit))) & (kBitModelTotal - 1))) >> kNumMoveReducingBits]
#define GET_PRICE_0(prob) p->ProbPrices[(prob) >> kNumMoveReducingBits]
#define GET_PRICE_1(prob) p->ProbPrices[((prob) ^ (kBitModelTotal - 1)) >> kNumMoveReducingBits]
#define GET_PRICEa_0(prob) ProbPrices[(prob) >> kNumMoveReducingBits]
#define GET_PRICEa_1(prob) ProbPrices[((prob) ^ (kBitModelTotal - 1)) >> kNumMoveReducingBits]
static UInt32 LitEnc_GetPrice(const CLzmaProb *probs, UInt32 sym, const CProbPrice *ProbPrices)
{
UInt32 price = 0;
sym |= 0x100;
do
{
unsigned bit = sym & 1;
sym >>= 1;
price += GET_PRICEa(probs[sym], bit);
}
while (sym >= 2);
return price;
}
static UInt32 LitEnc_Matched_GetPrice(const CLzmaProb *probs, UInt32 sym, UInt32 matchByte, const CProbPrice *ProbPrices)
{
UInt32 price = 0;
UInt32 offs = 0x100;
sym |= 0x100;
do
{
matchByte <<= 1;
price += GET_PRICEa(probs[offs + (matchByte & offs) + (sym >> 8)], (sym >> 7) & 1);
sym <<= 1;
offs &= ~(matchByte ^ sym);
}
while (sym < 0x10000);
return price;
}
static void RcTree_ReverseEncode(CRangeEnc *rc, CLzmaProb *probs, unsigned numBits, unsigned sym)
{
UInt32 range = rc->range;
unsigned m = 1;
do
{
UInt32 ttt, newBound;
unsigned bit = sym & 1;
// RangeEnc_EncodeBit(rc, probs + m, bit);
sym >>= 1;
RC_BIT(rc, probs + m, bit)
m = (m << 1) | bit;
}
while (--numBits);
rc->range = range;
}
static void LenEnc_Init(CLenEnc *p)
{
unsigned i;
for (i = 0; i < (LZMA_NUM_PB_STATES_MAX << (kLenNumLowBits + 1)); i++)
p->low[i] = kProbInitValue;
for (i = 0; i < kLenNumHighSymbols; i++)
p->high[i] = kProbInitValue;
}
static void LenEnc_Encode(CLenEnc *p, CRangeEnc *rc, unsigned sym, unsigned posState)
{
UInt32 range, ttt, newBound;
CLzmaProb *probs = p->low;
range = rc->range;
RC_BIT_PRE(rc, probs)
if (sym >= kLenNumLowSymbols)
{
RC_BIT_1(rc, probs)
probs += kLenNumLowSymbols;
RC_BIT_PRE(rc, probs)
if (sym >= kLenNumLowSymbols * 2)
{
RC_BIT_1(rc, probs)
rc->range = range;
// RcTree_Encode(rc, p->high, kLenNumHighBits, sym - kLenNumLowSymbols * 2);
LitEnc_Encode(rc, p->high, sym - kLenNumLowSymbols * 2);
return;
}
sym -= kLenNumLowSymbols;
}
// RcTree_Encode(rc, probs + (posState << kLenNumLowBits), kLenNumLowBits, sym);
{
unsigned m;
unsigned bit;
RC_BIT_0(rc, probs)
probs += (posState << (1 + kLenNumLowBits));
bit = (sym >> 2) ; RC_BIT(rc, probs + 1, bit) m = (1 << 1) + bit;
bit = (sym >> 1) & 1; RC_BIT(rc, probs + m, bit) m = (m << 1) + bit;
bit = sym & 1; RC_BIT(rc, probs + m, bit)
rc->range = range;
}
}
static void SetPrices_3(const CLzmaProb *probs, UInt32 startPrice, UInt32 *prices, const CProbPrice *ProbPrices)
{
unsigned i;
for (i = 0; i < 8; i += 2)
{
UInt32 price = startPrice;
UInt32 prob;
price += GET_PRICEa(probs[1 ], (i >> 2));
price += GET_PRICEa(probs[2 + (i >> 2)], (i >> 1) & 1);
prob = probs[4 + (i >> 1)];
prices[i ] = price + GET_PRICEa_0(prob);
prices[i + 1] = price + GET_PRICEa_1(prob);
}
}
Z7_NO_INLINE static void Z7_FASTCALL LenPriceEnc_UpdateTables(
CLenPriceEnc *p,
unsigned numPosStates,
const CLenEnc *enc,
const CProbPrice *ProbPrices)
{
UInt32 b;
{
unsigned prob = enc->low[0];
UInt32 a, c;
unsigned posState;
b = GET_PRICEa_1(prob);
a = GET_PRICEa_0(prob);
c = b + GET_PRICEa_0(enc->low[kLenNumLowSymbols]);
for (posState = 0; posState < numPosStates; posState++)