diff options
Diffstat (limited to 'other-licenses/7zstub/src/C/LzmaEnc.c')
| -rw-r--r-- | other-licenses/7zstub/src/C/LzmaEnc.c | 2787 |
1 files changed, 2787 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/C/LzmaEnc.c b/other-licenses/7zstub/src/C/LzmaEnc.c new file mode 100644 index 000000000..bebe664d3 --- /dev/null +++ b/other-licenses/7zstub/src/C/LzmaEnc.c @@ -0,0 +1,2787 @@ +/* LzmaEnc.c -- LZMA Encoder
+2018-04-29 : 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 "LzmaEnc.h"
+
+#include "LzFind.h"
+#ifndef _7ZIP_ST
+#include "LzFindMt.h"
+#endif
+
+#ifdef SHOW_STAT
+static unsigned g_STAT_OFFSET = 0;
+#endif
+
+#define kLzmaMaxHistorySize ((UInt32)3 << 29)
+/* #define kLzmaMaxHistorySize ((UInt32)7 << 29) */
+
+#define kNumTopBits 24
+#define kTopValue ((UInt32)1 << kNumTopBits)
+
+#define kNumBitModelTotalBits 11
+#define kBitModelTotal (1 << kNumBitModelTotalBits)
+#define kNumMoveBits 5
+#define kProbInitValue (kBitModelTotal >> 1)
+
+#define kNumMoveReducingBits 4
+#define kNumBitPriceShiftBits 4
+#define kBitPrice (1 << kNumBitPriceShiftBits)
+
+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->writeEndMark = 0;
+}
+
+void LzmaEncProps_Normalize(CLzmaEncProps *p)
+{
+ int level = p->level;
+ if (level < 0) level = 5;
+ p->level = level;
+
+ if (p->dictSize == 0) p->dictSize = (level <= 5 ? (1 << (level * 2 + 14)) : (level <= 7 ? (1 << 25) : (1 << 26)));
+ if (p->dictSize > p->reduceSize)
+ {
+ unsigned i;
+ UInt32 reduceSize = (UInt32)p->reduceSize;
+ for (i = 11; i <= 30; i++)
+ {
+ if (reduceSize <= ((UInt32)2 << i)) { p->dictSize = ((UInt32)2 << i); break; }
+ if (reduceSize <= ((UInt32)3 << i)) { p->dictSize = ((UInt32)3 << i); break; }
+ }
+ }
+
+ 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 = (level < 5 ? 0 : 1);
+ if (p->fb < 0) p->fb = (level < 7 ? 32 : 64);
+ if (p->btMode < 0) p->btMode = (p->algo == 0 ? 0 : 1);
+ if (p->numHashBytes < 0) p->numHashBytes = 4;
+ if (p->mc == 0) p->mc = (16 + (p->fb >> 1)) >> (p->btMode ? 0 : 1);
+
+ if (p->numThreads < 0)
+ p->numThreads =
+ #ifndef _7ZIP_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;
+}
+
+#if (_MSC_VER >= 1400)
+/* BSR code is fast for some new CPUs */
+/* #define LZMA_LOG_BSR */
+#endif
+
+#ifdef LZMA_LOG_BSR
+
+#define kDicLogSizeMaxCompress 32
+
+#define BSR2_RET(pos, res) { unsigned long zz; _BitScanReverse(&zz, (pos)); res = (zz + zz) + ((pos >> (zz - 1)) & 1); }
+
+static 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
+
+#define kNumLogBits (9 + sizeof(size_t) / 2)
+/* #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
+
+
+#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;
+
+
+#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 _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;
+ unsigned counters[LZMA_NUM_PB_STATES_MAX];
+ UInt32 prices[LZMA_NUM_PB_STATES_MAX][kLenNumSymbolsTotal];
+} CLenPriceEnc;
+
+
+typedef struct
+{
+ UInt32 range;
+ unsigned cache;
+ UInt64 low;
+ UInt64 cacheSize;
+ Byte *buf;
+ Byte *bufLim;
+ Byte *bufBase;
+ ISeqOutStream *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;
+
+
+typedef struct
+{
+ void *matchFinderObj;
+ IMatchFinder 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;
+
+ Bool fastMode;
+ Bool writeEndMark;
+ Bool finished;
+ Bool multiThread;
+ Bool needInit;
+
+ UInt64 nowPos64;
+
+ unsigned matchPriceCount;
+ unsigned alignPriceCount;
+
+ unsigned distTableSize;
+
+ UInt32 dictSize;
+ SRes result;
+
+ #ifndef _7ZIP_ST
+ Bool mtMode;
+ // begin of CMatchFinderMt is used in LZ thread
+ CMatchFinderMt matchFinderMt;
+ // end of CMatchFinderMt is used in BT and HASH threads
+ #endif
+
+ CMatchFinder matchFinderBase;
+
+ #ifndef _7ZIP_ST
+ Byte pad[128];
+ #endif
+
+ // LZ thread
+ CProbPrice ProbPrices[kBitModelTotal >> kNumMoveReducingBits];
+
+ UInt32 matches[LZMA_MATCH_LEN_MAX * 2 + 2 + 1];
+
+ 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;
+
+ #ifndef _7ZIP_ST
+ Byte pad2[128];
+ #endif
+} CLzmaEnc;
+
+
+
+#define COPY_ARR(dest, src, arr) memcpy(dest->arr, src->arr, sizeof(src->arr));
+
+void LzmaEnc_SaveState(CLzmaEncHandle pp)
+{
+ CLzmaEnc *p = (CLzmaEnc *)pp;
+ CSaveState *dest = &p->saveState;
+
+ dest->state = p->state;
+
+ dest->lenProbs = p->lenProbs;
+ dest->repLenProbs = p->repLenProbs;
+
+ COPY_ARR(dest, p, reps);
+
+ COPY_ARR(dest, p, posAlignEncoder);
+ COPY_ARR(dest, p, isRep);
+ COPY_ARR(dest, p, isRepG0);
+ COPY_ARR(dest, p, isRepG1);
+ COPY_ARR(dest, p, isRepG2);
+ COPY_ARR(dest, p, isMatch);
+ COPY_ARR(dest, p, isRep0Long);
+ COPY_ARR(dest, p, posSlotEncoder);
+ COPY_ARR(dest, p, posEncoders);
+
+ memcpy(dest->litProbs, p->litProbs, ((UInt32)0x300 << p->lclp) * sizeof(CLzmaProb));
+}
+
+
+void LzmaEnc_RestoreState(CLzmaEncHandle pp)
+{
+ CLzmaEnc *dest = (CLzmaEnc *)pp;
+ const CSaveState *p = &dest->saveState;
+
+ dest->state = p->state;
+
+ dest->lenProbs = p->lenProbs;
+ dest->repLenProbs = p->repLenProbs;
+
+ COPY_ARR(dest, p, reps);
+
+ COPY_ARR(dest, p, posAlignEncoder);
+ COPY_ARR(dest, p, isRep);
+ COPY_ARR(dest, p, isRepG0);
+ COPY_ARR(dest, p, isRepG1);
+ COPY_ARR(dest, p, isRepG2);
+ COPY_ARR(dest, p, isMatch);
+ COPY_ARR(dest, p, isRep0Long);
+ COPY_ARR(dest, p, posSlotEncoder);
+ COPY_ARR(dest, p, posEncoders);
+
+ memcpy(dest->litProbs, p->litProbs, ((UInt32)0x300 << dest->lclp) * sizeof(CLzmaProb));
+}
+
+
+
+SRes LzmaEnc_SetProps(CLzmaEncHandle pp, const CLzmaEncProps *props2)
+{
+ CLzmaEnc *p = (CLzmaEnc *)pp;
+ CLzmaEncProps props = *props2;
+ LzmaEncProps_Normalize(&props);
+
+ if (props.lc > LZMA_LC_MAX
+ || props.lp > LZMA_LP_MAX
+ || props.pb > LZMA_PB_MAX
+ || props.dictSize > ((UInt64)1 << kDicLogSizeMaxCompress)
+ || props.dictSize > kLzmaMaxHistorySize)
+ return SZ_ERROR_PARAM;
+
+ p->dictSize = props.dictSize;
+ {
+ unsigned fb = props.fb;
+ if (fb < 5)
+ fb = 5;
+ if (fb > LZMA_MATCH_LEN_MAX)
+ fb = LZMA_MATCH_LEN_MAX;
+ p->numFastBytes = fb;
+ }
+ p->lc = props.lc;
+ p->lp = props.lp;
+ p->pb = props.pb;
+ p->fastMode = (props.algo == 0);
+ p->matchFinderBase.btMode = (Byte)(props.btMode ? 1 : 0);
+ {
+ unsigned numHashBytes = 4;
+ if (props.btMode)
+ {
+ if (props.numHashBytes < 2)
+ numHashBytes = 2;
+ else if (props.numHashBytes < 4)
+ numHashBytes = props.numHashBytes;
+ }
+ p->matchFinderBase.numHashBytes = numHashBytes;
+ }
+
+ p->matchFinderBase.cutValue = props.mc;
+
+ p->writeEndMark = props.writeEndMark;
+
+ #ifndef _7ZIP_ST
+ /*
+ if (newMultiThread != _multiThread)
+ {
+ ReleaseMatchFinder();
+ _multiThread = newMultiThread;
+ }
+ */
+ p->multiThread = (props.numThreads > 1);
+ #endif
+
+ return SZ_OK;
+}
+
+
+void LzmaEnc_SetDataSize(CLzmaEncHandle pp, UInt64 expectedDataSiize)
+{
+ CLzmaEnc *p = (CLzmaEnc *)pp;
+ p->matchFinderBase.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 + ((p)->buf - (p)->bufBase) + (p)->cacheSize)
+#define RangeEnc_GetProcessed_sizet(p) ((size_t)(p)->processed + ((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 = 0;
+}
+
+static void RangeEnc_Init(CRangeEnc *p)
+{
+ /* Stream.Init(); */
+ p->range = 0xFFFFFFFF;
+ p->cache = 0;
+ p->low = 0;
+ p->cacheSize = 0;
+
+ p->buf = p->bufBase;
+
+ p->processed = 0;
+ p->res = SZ_OK;
+}
+
+MY_NO_INLINE static void RangeEnc_FlushStream(CRangeEnc *p)
+{
+ size_t num;
+ if (p->res != SZ_OK)
+ return;
+ num = p->buf - p->bufBase;
+ if (num != ISeqOutStream_Write(p->outStream, p->bufBase, num))
+ p->res = SZ_ERROR_WRITE;
+ p->processed += num;
+ p->buf = p->bufBase;
+}
+
+MY_NO_INLINE static void MY_FAST_CALL 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 _LZMA_ENC_USE_BRANCH
+
+#ifdef _LZMA_ENC_USE_BRANCH
+
+#define RC_BIT(p, prob, symbol) { \
+ RC_BIT_PRE(p, prob) \
+ if (symbol == 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, symbol) { \
+ UInt32 mask; \
+ RC_BIT_PRE(p, prob) \
+ mask = 0 - (UInt32)symbol; \
+ range &= mask; \
+ mask &= newBound; \
+ range -= mask; \
+ (p)->low += mask; \
+ mask = (UInt32)symbol - 1; \
+ range += newBound & mask; \
+ mask &= (kBitModelTotal - ((1 << kNumMoveBits) - 1)); \
+ mask += ((1 << kNumMoveBits) - 1); \
+ ttt += (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 symbol)
+{
+ UInt32 range = p->range;
+ symbol |= 0x100;
+ do
+ {
+ UInt32 ttt, newBound;
+ // RangeEnc_EncodeBit(p, probs + (symbol >> 8), (symbol >> 7) & 1);
+ CLzmaProb *prob = probs + (symbol >> 8);
+ UInt32 bit = (symbol >> 7) & 1;
+ symbol <<= 1;
+ RC_BIT(p, prob, bit);
+ }
+ while (symbol < 0x10000);
+ p->range = range;
+}
+
+static void LitEnc_EncodeMatched(CRangeEnc *p, CLzmaProb *probs, UInt32 symbol, UInt32 matchByte)
+{
+ UInt32 range = p->range;
+ UInt32 offs = 0x100;
+ symbol |= 0x100;
+ do
+ {
+ UInt32 ttt, newBound;
+ CLzmaProb *prob;
+ UInt32 bit;
+ matchByte <<= 1;
+ // RangeEnc_EncodeBit(p, probs + (offs + (matchByte & offs) + (symbol >> 8)), (symbol >> 7) & 1);
+ prob = probs + (offs + (matchByte & offs) + (symbol >> 8));
+ bit = (symbol >> 7) & 1;
+ symbol <<= 1;
+ offs &= ~(matchByte ^ symbol);
+ RC_BIT(p, prob, bit);
+ }
+ while (symbol < 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)((kNumBitModelTotalBits << kCyclesBits) - 15 - bitCount);
+ // printf("\n%3d: %5d", i, ProbPrices[i]);
+ }
+}
+
+
+#define GET_PRICE(prob, symbol) \
+ p->ProbPrices[((prob) ^ (unsigned)(((-(int)(symbol))) & (kBitModelTotal - 1))) >> kNumMoveReducingBits];
+
+#define GET_PRICEa(prob, symbol) \
+ ProbPrices[((prob) ^ (unsigned)((-((int)(symbol))) & (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 symbol, const CProbPrice *ProbPrices)
+{
+ UInt32 price = 0;
+ symbol |= 0x100;
+ do
+ {
+ unsigned bit = symbol & 1;
+ symbol >>= 1;
+ price += GET_PRICEa(probs[symbol], bit);
+ }
+ while (symbol >= 2);
+ return price;
+}
+
+
+static UInt32 LitEnc_Matched_GetPrice(const CLzmaProb *probs, UInt32 symbol, UInt32 matchByte, const CProbPrice *ProbPrices)
+{
+ UInt32 price = 0;
+ UInt32 offs = 0x100;
+ symbol |= 0x100;
+ do
+ {
+ matchByte <<= 1;
+ price += GET_PRICEa(probs[offs + (matchByte & offs) + (symbol >> 8)], (symbol >> 7) & 1);
+ symbol <<= 1;
+ offs &= ~(matchByte ^ symbol);
+ }
+ while (symbol < 0x10000);
+ return price;
+}
+
+
+static void RcTree_ReverseEncode(CRangeEnc *rc, CLzmaProb *probs, unsigned numBits, UInt32 symbol)
+{
+ UInt32 range = rc->range;
+ unsigned m = 1;
+ do
+ {
+ UInt32 ttt, newBound;
+ unsigned bit = symbol & 1;
+ // RangeEnc_EncodeBit(rc, probs + m, bit);
+ symbol >>= 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 symbol, unsigned posState)
+{
+ UInt32 range, ttt, newBound;
+ CLzmaProb *probs = p->low;
+ range = rc->range;
+ RC_BIT_PRE(rc, probs);
+ if (symbol >= kLenNumLowSymbols)
+ {
+ RC_BIT_1(rc, probs);
+ probs += kLenNumLowSymbols;
+ RC_BIT_PRE(rc, probs);
+ if (symbol >= kLenNumLowSymbols * 2)
+ {
+ RC_BIT_1(rc, probs);
+ rc->range = range;
+ // RcTree_Encode(rc, p->high, kLenNumHighBits, symbol - kLenNumLowSymbols * 2);
+ LitEnc_Encode(rc, p->high, symbol - kLenNumLowSymbols * 2);
+ return;
+ }
+ symbol -= kLenNumLowSymbols;
+ }
+
+ // RcTree_Encode(rc, probs + (posState << kLenNumLowBits), kLenNumLowBits, symbol);
+ {
+ unsigned m;
+ unsigned bit;
+ RC_BIT_0(rc, probs);
+ probs += (posState << (1 + kLenNumLowBits));
+ bit = (symbol >> 2) ; RC_BIT(rc, probs + 1, bit); m = (1 << 1) + bit;
+ bit = (symbol >> 1) & 1; RC_BIT(rc, probs + m, bit); m = (m << 1) + bit;
+ bit = symbol & 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);
+ }
+}
+
+
+MY_NO_INLINE static void MY_FAST_CALL LenPriceEnc_UpdateTable(
+ CLenPriceEnc *p, unsigned posState,
+ const CLenEnc *enc,
+ const CProbPrice *ProbPrices)
+{
+ // int y; for (y = 0; y < 100; y++) {
+ UInt32 a;
+ unsigned i, numSymbols;
+
+ UInt32 *prices = p->prices[posState];
+ {
+ const CLzmaProb *probs = enc->low + (posState << (1 + kLenNumLowBits));
+ SetPrices_3(probs, GET_PRICEa_0(enc->low[0]), prices, ProbPrices);
+ a = GET_PRICEa_1(enc->low[0]);
+ SetPrices_3(probs + kLenNumLowSymbols, a + GET_PRICEa_0(enc->low[kLenNumLowSymbols]), prices + kLenNumLowSymbols, ProbPrices);
+ a += GET_PRICEa_1(enc->low[kLenNumLowSymbols]);
+ }
+ numSymbols = p->tableSize;
+ p->counters[posState] = numSymbols;
+ for (i = kLenNumLowSymbols * 2; i < numSymbols; i += 1)
+ {
+ prices[i] = a +
+ // RcTree_GetPrice(enc->high, kLenNumHighBits, i - kLenNumLowSymbols * 2, ProbPrices);
+ LitEnc_GetPrice(enc->high, i - kLenNumLowSymbols * 2, ProbPrices);
+ /*
+ unsigned sym = (i - kLenNumLowSymbols * 2) >> 1;
+ UInt32 price = a + RcTree_GetPrice(enc->high, kLenNumHighBits - 1, sym, ProbPrices);
+ UInt32 prob = enc->high[(1 << 7) + sym];
+ prices[i ] = price + GET_PRICEa_0(prob);
+ prices[i + 1] = price + GET_PRICEa_1(prob);
+ */
+ }
+ // }
+}
+
+static void LenPriceEnc_UpdateTables(CLenPriceEnc *p, unsigned numPosStates,
+ const CLenEnc *enc,
+ const CProbPrice *ProbPrices)
+{
+ unsigned posState;
+ for (posState = 0; posState < numPosStates; posState++)
+ LenPriceEnc_UpdateTable(p, posState, enc, ProbPrices);
+}
+
+
+/*
+ #ifdef SHOW_STAT
+ g_STAT_OFFSET += num;
+ printf("\n MovePos %u", num);
+ #endif
+*/
+
+#define MOVE_POS(p, num) { \
+ p->additionalOffset += (num); \
+ p->matchFinder.Skip(p->matchFinderObj, (num)); }
+
+
+static unsigned ReadMatchDistances(CLzmaEnc *p, unsigned *numPairsRes)
+{
+ unsigned numPairs;
+
+ p->additionalOffset++;
+ p->numAvail = p->matchFinder.GetNumAvailableBytes(p->matchFinderObj);
+ numPairs = p->matchFinder.GetMatches(p->matchFinderObj, p->matches);
+ *numPairsRes = numPairs;
+
+ #ifdef SHOW_STAT
+ printf("\n i = %u numPairs = %u ", g_STAT_OFFSET, numPairs / 2);
+ g_STAT_OFFSET++;
+ {
+ unsigned i;
+ for (i = 0; i < numPairs; i += 2)
+ printf("%2u %6u | ", p->matches[i], p->matches[i + 1]);
+ }
+ #endif
+
+ if (numPairs == 0)
+ return 0;
+ {
+ unsigned len = p->matches[(size_t)numPairs - 2];
+ if (len != p->numFastBytes)
+ return len;
+ {
+ UInt32 numAvail = p->numAvail;
+ if (numAvail > LZMA_MATCH_LEN_MAX)
+ numAvail = LZMA_MATCH_LEN_MAX;
+ {
+ const Byte *p1 = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - 1;
+ const Byte *p2 = p1 + len;
+ ptrdiff_t dif = (ptrdiff_t)-1 - p->matches[(size_t)numPairs - 1];
+ const Byte *lim = p1 + numAvail;
+ for (; p2 != lim && *p2 == p2[dif]; p2++);
+ return (unsigned)(p2 - p1);
+ }
+ }
+ }
+}
+
+#define MARK_LIT ((UInt32)(Int32)-1)
+
+#define MakeAs_Lit(p) { (p)->dist = MARK_LIT; (p)->extra = 0; }
+#define MakeAs_ShortRep(p) { (p)->dist = 0; (p)->extra = 0; }
+#define IsShortRep(p) ((p)->dist == 0)
+
+
+#define GetPrice_ShortRep(p, state, posState) \
+ ( GET_PRICE_0(p->isRepG0[state]) + GET_PRICE_0(p->isRep0Long[state][posState]))
+
+#define GetPrice_Rep_0(p, state, posState) ( \
+ GET_PRICE_1(p->isMatch[state][posState]) \
+ + GET_PRICE_1(p->isRep0Long[state][posState])) \
+ + GET_PRICE_1(p->isRep[state]) \
+ + GET_PRICE_0(p->isRepG0[state])
+
+
+static UInt32 GetPrice_PureRep(const CLzmaEnc *p, unsigned repIndex, size_t state, size_t posState)
+{
+ UInt32 price;
+ UInt32 prob = p->isRepG0[state];
+ if (repIndex == 0)
+ {
+ price = GET_PRICE_0(prob);
+ price += GET_PRICE_1(p->isRep0Long[state][posState]);
+ }
+ else
+ {
+ price = GET_PRICE_1(prob);
+ prob = p->isRepG1[state];
+ if (repIndex == 1)
+ price += GET_PRICE_0(prob);
+ else
+ {
+ price += GET_PRICE_1(prob);
+ price += GET_PRICE(p->isRepG2[state], repIndex - 2);
+ }
+ }
+ return price;
+}
+
+
+static unsigned Backward(CLzmaEnc *p, unsigned cur)
+{
+ unsigned wr = cur + 1;
+ p->optEnd = wr;
+
+ for (;;)
+ {
+ UInt32 dist = p->opt[cur].dist;
+ UInt32 len = p->opt[cur].len;
+ UInt32 extra = p->opt[cur].extra;
+ cur -= len;
+
+ if (extra)
+ {
+ wr--;
+ p->opt[wr].len = len;
+ cur -= extra;
+ len = extra;
+ if (extra == 1)
+ {
+ p->opt[wr].dist = dist;
+ dist = MARK_LIT;
+ }
+ else
+ {
+ p->opt[wr].dist = 0;
+ len--;
+ wr--;
+ p->opt[wr].dist = MARK_LIT;
+ p->opt[wr].len = 1;
+ }
+ }
+
+ if (cur == 0)
+ {
+ p->backRes = dist;
+ p->optCur = wr;
+ return len;
+ }
+
+ wr--;
+ p->opt[wr].dist = dist;
+ p->opt[wr].len = len;
+ }
+}
+
+
+
+#define LIT_PROBS(pos, prevByte) \
+ (p->litProbs + (UInt32)3 * (((((pos) << 8) + (prevByte)) & p->lpMask) << p->lc))
+
+
+static unsigned GetOptimum(CLzmaEnc *p, UInt32 position)
+{
+ unsigned last, cur;
+ UInt32 reps[LZMA_NUM_REPS];
+ unsigned repLens[LZMA_NUM_REPS];
+ UInt32 *matches;
+
+ {
+ UInt32 numAvail;
+ unsigned numPairs, mainLen, repMaxIndex, i, posState;
+ UInt32 matchPrice, repMatchPrice;
+ const Byte *data;
+ Byte curByte, matchByte;
+
+ p->optCur = p->optEnd = 0;
+
+ if (p->additionalOffset == 0)
+ mainLen = ReadMatchDistances(p, &numPairs);
+ else
+ {
+ mainLen = p->longestMatchLen;
+ numPairs = p->numPairs;
+ }
+
+ numAvail = p->numAvail;
+ if (numAvail < 2)
+ {
+ p->backRes = MARK_LIT;
+ return 1;
+ }
+ if (numAvail > LZMA_MATCH_LEN_MAX)
+ numAvail = LZMA_MATCH_LEN_MAX;
+
+ data = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - 1;
+ repMaxIndex = 0;
+
+ for (i = 0; i < LZMA_NUM_REPS; i++)
+ {
+ unsigned len;
+ const Byte *data2;
+ reps[i] = p->reps[i];
+ data2 = data - reps[i];
+ if (data[0] != data2[0] || data[1] != data2[1])
+ {
+ repLens[i] = 0;
+ continue;
+ }
+ for (len = 2; len < numAvail && data[len] == data2[len]; len++);
+ repLens[i] = len;
+ if (len > repLens[repMaxIndex])
+ repMaxIndex = i;
+ }
+
+ if (repLens[repMaxIndex] >= p->numFastBytes)
+ {
+ unsigned len;
+ p->backRes = repMaxIndex;
+ len = repLens[repMaxIndex];
+ MOVE_POS(p, len - 1)
+ return len;
+ }
+
+ matches = p->matches;
+
+ if (mainLen >= p->numFastBytes)
+ {
+ p->backRes = matches[(size_t)numPairs - 1] + LZMA_NUM_REPS;
+ MOVE_POS(p, mainLen - 1)
+ return mainLen;
+ }
+
+ curByte = *data;
+ matchByte = *(data - reps[0]);
+
+ if (mainLen < 2 && curByte != matchByte && repLens[repMaxIndex] < 2)
+ {
+ p->backRes = MARK_LIT;
+ return 1;
+ }
+
+ p->opt[0].state = (CState)p->state;
+
+ posState = (position & p->pbMask);
+
+ {
+ const CLzmaProb *probs = LIT_PROBS(position, *(data - 1));
+ p->opt[1].price = GET_PRICE_0(p->isMatch[p->state][posState]) +
+ (!IsLitState(p->state) ?
+ LitEnc_Matched_GetPrice(probs, curByte, matchByte, p->ProbPrices) :
+ LitEnc_GetPrice(probs, curByte, p->ProbPrices));
+ }
+
+ MakeAs_Lit(&p->opt[1]);
+
+ matchPrice = GET_PRICE_1(p->isMatch[p->state][posState]);
+ repMatchPrice = matchPrice + GET_PRICE_1(p->isRep[p->state]);
+
+ if (matchByte == curByte)
+ {
+ UInt32 shortRepPrice = repMatchPrice + GetPrice_ShortRep(p, p->state, posState);
+ if (shortRepPrice < p->opt[1].price)
+ {
+ p->opt[1].price = shortRepPrice;
+ MakeAs_ShortRep(&p->opt[1]);
+ }
+ }
+
+ last = (mainLen >= repLens[repMaxIndex] ? mainLen : repLens[repMaxIndex]);
+
+ if (last < 2)
+ {
+ p->backRes = p->opt[1].dist;
+ return 1;
+ }
+
+ p->opt[1].len = 1;
+
+ p->opt[0].reps[0] = reps[0];
+ p->opt[0].reps[1] = reps[1];
+ p->opt[0].reps[2] = reps[2];
+ p->opt[0].reps[3] = reps[3];
+
+ {
+ unsigned len = last;
+ do
+ p->opt[len--].price = kInfinityPrice;
+ while (len >= 2);
+ }
+
+ // ---------- REP ----------
+
+ for (i = 0; i < LZMA_NUM_REPS; i++)
+ {
+ unsigned repLen = repLens[i];
+ UInt32 price;
+ if (repLen < 2)
+ continue;
+ price = repMatchPrice + GetPrice_PureRep(p, i, p->state, posState);
+ do
+ {
+ UInt32 price2 = price + p->repLenEnc.prices[posState][(size_t)repLen - 2];
+ COptimal *opt = &p->opt[repLen];
+ if (price2 < opt->price)
+ {
+ opt->price = price2;
+ opt->len = repLen;
+ opt->dist = i;
+ opt->extra = 0;
+ }
+ }
+ while (--repLen >= 2);
+ }
+
+
+ // ---------- MATCH ----------
+ {
+ unsigned len = ((repLens[0] >= 2) ? repLens[0] + 1 : 2);
+ if (len <= mainLen)
+ {
+ unsigned offs = 0;
+ UInt32 normalMatchPrice = matchPrice + GET_PRICE_0(p->isRep[p->state]);
+
+ while (len > matches[offs])
+ offs += 2;
+
+ for (; ; len++)
+ {
+ COptimal *opt;
+ UInt32 dist = matches[(size_t)offs + 1];
+ UInt32 price2 = normalMatchPrice + p->lenEnc.prices[posState][(size_t)len - LZMA_MATCH_LEN_MIN];
+ unsigned lenToPosState = GetLenToPosState(len);
+
+ if (dist < kNumFullDistances)
+ price2 += p->distancesPrices[lenToPosState][dist & (kNumFullDistances - 1)];
+ else
+ {
+ unsigned slot;
+ GetPosSlot2(dist, slot);
+ price2 += p->alignPrices[dist & kAlignMask];
+ price2 += p->posSlotPrices[lenToPosState][slot];
+ }
+
+ opt = &p->opt[len];
+
+ if (price2 < opt->price)
+ {
+ opt->price = price2;
+ opt->len = len;
+ opt->dist = dist + LZMA_NUM_REPS;
+ opt->extra = 0;
+ }
+
+ if (len == matches[offs])
+ {
+ offs += 2;
+ if (offs == numPairs)
+ break;
+ }
+ }
+ }
+ }
+
+
+ cur = 0;
+
+ #ifdef SHOW_STAT2
+ /* if (position >= 0) */
+ {
+ unsigned i;
+ printf("\n pos = %4X", position);
+ for (i = cur; i <= last; i++)
+ printf("\nprice[%4X] = %u", position - cur + i, p->opt[i].price);
+ }
+ #endif
+ }
+
+
+
+ // ---------- Optimal Parsing ----------
+
+ for (;;)
+ {
+ UInt32 numAvail, numAvailFull;
+ unsigned newLen, numPairs, prev, state, posState, startLen;
+ UInt32 curPrice, litPrice, matchPrice, repMatchPrice;
+ Bool nextIsLit;
+ Byte curByte, matchByte;
+ const Byte *data;
+ COptimal *curOpt, *nextOpt;
+
+ if (++cur == last)
+ return Backward(p, cur);
+
+ newLen = ReadMatchDistances(p, &numPairs);
+
+ if (newLen >= p->numFastBytes)
+ {
+ p->numPairs = numPairs;
+ p->longestMatchLen = newLen;
+ return Backward(p, cur);
+ }
+
+ curOpt = &p->opt[cur];
+ prev = cur - curOpt->len;
+
+ if (curOpt->len == 1)
+ {
+ state = p->opt[prev].state;
+ if (IsShortRep(curOpt))
+ state = kShortRepNextStates[state];
+ else
+ state = kLiteralNextStates[state];
+ }
+ else
+ {
+ const COptimal *prevOpt;
+ UInt32 b0;
+ UInt32 dist = curOpt->dist;
+
+ if (curOpt->extra)
+ {
+ prev -= curOpt->extra;
+ state = kState_RepAfterLit;
+ if (curOpt->extra == 1)
+ state = (dist < LZMA_NUM_REPS) ? kState_RepAfterLit : kState_MatchAfterLit;
+ }
+ else
+ {
+ state = p->opt[prev].state;
+ if (dist < LZMA_NUM_REPS)
+ state = kRepNextStates[state];
+ else
+ state = kMatchNextStates[state];
+ }
+
+ prevOpt = &p->opt[prev];
+ b0 = prevOpt->reps[0];
+
+ if (dist < LZMA_NUM_REPS)
+ {
+ if (dist == 0)
+ {
+ reps[0] = b0;
+ reps[1] = prevOpt->reps[1];
+ reps[2] = prevOpt->reps[2];
+ reps[3] = prevOpt->reps[3];
+ }
+ else
+ {
+ reps[1] = b0;
+ b0 = prevOpt->reps[1];
+ if (dist == 1)
+ {
+ reps[0] = b0;
+ reps[2] = prevOpt->reps[2];
+ reps[3] = prevOpt->reps[3];
+ }
+ else
+ {
+ reps[2] = b0;
+ reps[0] = prevOpt->reps[dist];
+ reps[3] = prevOpt->reps[dist ^ 1];
+ }
+ }
+ }
+ else
+ {
+ reps[0] = (dist - LZMA_NUM_REPS + 1);
+ reps[1] = b0;
+ reps[2] = prevOpt->reps[1];
+ reps[3] = prevOpt->reps[2];
+ }
+ }
+
+ curOpt->state = (CState)state;
+ curOpt->reps[0] = reps[0];
+ curOpt->reps[1] = reps[1];
+ curOpt->reps[2] = reps[2];
+ curOpt->reps[3] = reps[3];
+
+ data = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - 1;
+ curByte = *data;
+ matchByte = *(data - reps[0]);
+
+ position++;
+ posState = (position & p->pbMask);
+
+ /*
+ The order of Price checks:
+ < LIT
+ <= SHORT_REP
+ < LIT : REP_0
+ < REP [ : LIT : REP_0 ]
+ < MATCH [ : LIT : REP_0 ]
+ */
+
+ curPrice = curOpt->price;
+ litPrice = curPrice + GET_PRICE_0(p->isMatch[state][posState]);
+
+ nextOpt = &p->opt[(size_t)cur + 1];
+ nextIsLit = False;
+
+ // if (litPrice >= nextOpt->price) litPrice = 0; else // 18.new
+ {
+ const CLzmaProb *probs = LIT_PROBS(position, *(data - 1));
+ litPrice += (!IsLitState(state) ?
+ LitEnc_Matched_GetPrice(probs, curByte, matchByte, p->ProbPrices) :
+ LitEnc_GetPrice(probs, curByte, p->ProbPrices));
+
+ if (litPrice < nextOpt->price)
+ {
+ nextOpt->price = litPrice;
+ nextOpt->len = 1;
+ MakeAs_Lit(nextOpt);
+ nextIsLit = True;
+ }
+ }
+
+ matchPrice = curPrice + GET_PRICE_1(p->isMatch[state][posState]);
+ repMatchPrice = matchPrice + GET_PRICE_1(p->isRep[state]);
+
+ // ---------- SHORT_REP ----------
+ // if (IsLitState(state)) // 18.new
+ if (matchByte == curByte)
+ // if (repMatchPrice < nextOpt->price) // 18.new
+ if (nextOpt->len < 2
+ || (nextOpt->dist != 0
+ && nextOpt->extra <= 1 // 17.old
+ ))
+ {
+ UInt32 shortRepPrice = repMatchPrice + GetPrice_ShortRep(p, state, posState);
+ if (shortRepPrice <= nextOpt->price) // 17.old
+ // if (shortRepPrice < nextOpt->price) // 18.new
+ {
+ nextOpt->price = shortRepPrice;
+ nextOpt->len = 1;
+ MakeAs_ShortRep(nextOpt);
+ nextIsLit = False;
+ }
+ }
+
+ numAvailFull = p->numAvail;
+ {
+ UInt32 temp = kNumOpts - 1 - cur;
+ if (numAvailFull > temp)
+ numAvailFull = temp;
+ }
+
+ if (numAvailFull < 2)
+ continue;
+ numAvail = (numAvailFull <= p->numFastBytes ? numAvailFull : p->numFastBytes);
+
+ // numAvail <= p->numFastBytes
+
+ // ---------- LIT : REP_0 ----------
+
+ if (
+ // litPrice != 0 && // 18.new
+ !nextIsLit
+ && matchByte != curByte
+ && numAvailFull > 2)
+ {
+ const Byte *data2 = data - reps[0];
+ if (data[1] == data2[1] && data[2] == data2[2])
+ {
+ unsigned len;
+ unsigned limit = p->numFastBytes + 1;
+ if (limit > numAvailFull)
+ limit = numAvailFull;
+ for (len = 3; len < limit && data[len] == data2[len]; len++);
+
+ {
+ unsigned state2 = kLiteralNextStates[state];
+ unsigned posState2 = (position + 1) & p->pbMask;
+ UInt32 price = litPrice + GetPrice_Rep_0(p, state2, posState2);
+ {
+ unsigned offset = cur + len;
+ while (last < offset)
+ p->opt[++last].price = kInfinityPrice;
+
+ // do
+ {
+ UInt32 price2;
+ COptimal *opt;
+ len--;
+ // price2 = price + GetPrice_Len_Rep_0(p, len, state2, posState2);
+ price2 = price + p->repLenEnc.prices[posState2][len - LZMA_MATCH_LEN_MIN];
+
+ opt = &p->opt[offset];
+ // offset--;
+ if (price2 < opt->price)
+ {
+ opt->price = price2;
+ opt->len = len;
+ opt->dist = 0;
+ opt->extra = 1;
+ }
+ }
+ // while (len >= 3);
+ }
+ }
+ }
+ }
+
+ startLen = 2; /* speed optimization */
+ {
+ // ---------- REP ----------
+ unsigned repIndex = 0; // 17.old
+ // unsigned repIndex = IsLitState(state) ? 0 : 1; // 18.notused
+ for (; repIndex < LZMA_NUM_REPS; repIndex++)
+ {
+ unsigned len;
+ UInt32 price;
+ const Byte *data2 = data - reps[repIndex];
+ if (data[0] != data2[0] || data[1] != data2[1])
+ continue;
+
+ for (len = 2; len < numAvail && data[len] == data2[len]; len++);
+
+ // if (len < startLen) continue; // 18.new: speed optimization
+
+ while (last < cur + len)
+ p->opt[++last].price = kInfinityPrice;
+ {
+ unsigned len2 = len;
+ price = repMatchPrice + GetPrice_PureRep(p, repIndex, state, posState);
+ do
+ {
+ UInt32 price2 = price + p->repLenEnc.prices[posState][(size_t)len2 - 2];
+ COptimal *opt = &p->opt[cur + len2];
+ if (price2 < opt->price)
+ {
+ opt->price = price2;
+ opt->len = len2;
+ opt->dist = repIndex;
+ opt->extra = 0;
+ }
+ }
+ while (--len2 >= 2);
+ }
+
+ if (repIndex == 0) startLen = len + 1; // 17.old
+ // startLen = len + 1; // 18.new
+
+ /* if (_maxMode) */
+ {
+ // ---------- REP : LIT : REP_0 ----------
+ // numFastBytes + 1 + numFastBytes
+
+ unsigned len2 = len + 1;
+ unsigned limit = len2 + p->numFastBytes;
+ if (limit > numAvailFull)
+ limit = numAvailFull;
+
+ for (; len2 < limit && data[len2] == data2[len2]; len2++);
+
+ len2 -= len;
+ if (len2 >= 3)
+ {
+ unsigned state2 = kRepNextStates[state];
+ unsigned posState2 = (position + len) & p->pbMask;
+ price +=
+ p->repLenEnc.prices[posState][(size_t)len - 2]
+ + GET_PRICE_0(p->isMatch[state2][posState2])
+ + LitEnc_Matched_GetPrice(LIT_PROBS(position + len, data[(size_t)len - 1]),
+ data[len], data2[len], p->ProbPrices);
+
+ // state2 = kLiteralNextStates[state2];
+ state2 = kState_LitAfterRep;
+ posState2 = (posState2 + 1) & p->pbMask;
+
+
+ price += GetPrice_Rep_0(p, state2, posState2);
+ {
+ unsigned offset = cur + len + len2;
+ while (last < offset)
+ p->opt[++last].price = kInfinityPrice;
+ // do
+ {
+ unsigned price2;
+ COptimal *opt;
+ len2--;
+ // price2 = price + GetPrice_Len_Rep_0(p, len2, state2, posState2);
+ price2 = price + p->repLenEnc.prices[posState2][len2 - LZMA_MATCH_LEN_MIN];
+
+ opt = &p->opt[offset];
+ // offset--;
+ if (price2 < opt->price)
+ {
+ opt->price = price2;
+ opt->len = len2;
+ opt->extra = (CExtra)(len + 1);
+ opt->dist = repIndex;
+ }
+ }
+ // while (len2 >= 3);
+ }
+ }
+ }
+ }
+ }
+
+
+ // ---------- MATCH ----------
+ /* for (unsigned len = 2; len <= newLen; len++) */
+ if (newLen > numAvail)
+ {
+ newLen = numAvail;
+ for (numPairs = 0; newLen > matches[numPairs]; numPairs += 2);
+ matches[numPairs] = newLen;
+ numPairs += 2;
+ }
+
+ if (newLen >= startLen)
+ {
+ UInt32 normalMatchPrice = matchPrice + GET_PRICE_0(p->isRep[state]);
+ UInt32 dist;
+ unsigned offs, posSlot, len;
+ while (last < cur + newLen)
+ p->opt[++last].price = kInfinityPrice;
+
+ offs = 0;
+ while (startLen > matches[offs])
+ offs += 2;
+ dist = matches[(size_t)offs + 1];
+
+ // if (dist >= kNumFullDistances)
+ GetPosSlot2(dist, posSlot);
+
+ for (len = /*2*/ startLen; ; len++)
+ {
+ UInt32 price = normalMatchPrice + p->lenEnc.prices[posState][(size_t)len - LZMA_MATCH_LEN_MIN];
+ {
+ COptimal *opt;
+ unsigned lenToPosState = len - 2; lenToPosState = GetLenToPosState2(lenToPosState);
+ if (dist < kNumFullDistances)
+ price += p->distancesPrices[lenToPosState][dist & (kNumFullDistances - 1)];
+ else
+ price += p->posSlotPrices[lenToPosState][posSlot] + p->alignPrices[dist & kAlignMask];
+
+ opt = &p->opt[cur + len];
+ if (price < opt->price)
+ {
+ opt->price = price;
+ opt->len = len;
+ opt->dist = dist + LZMA_NUM_REPS;
+ opt->extra = 0;
+ }
+ }
+
+ if (/*_maxMode && */ len == matches[offs])
+ {
+ // MATCH : LIT : REP_0
+
+ const Byte *data2 = data - dist - 1;
+ unsigned len2 = len + 1;
+ unsigned limit = len2 + p->numFastBytes;
+ if (limit > numAvailFull)
+ limit = numAvailFull;
+
+ for (; len2 < limit && data[len2] == data2[len2]; len2++);
+
+ len2 -= len;
+
+ if (len2 >= 3)
+ {
+ unsigned state2 = kMatchNextStates[state];
+ unsigned posState2 = (position + len) & p->pbMask;
+ unsigned offset;
+ price += GET_PRICE_0(p->isMatch[state2][posState2]);
+ price += LitEnc_Matched_GetPrice(LIT_PROBS(position + len, data[(size_t)len - 1]),
+ data[len], data2[len], p->ProbPrices);
+
+ // state2 = kLiteralNextStates[state2];
+ state2 = kState_LitAfterMatch;
+
+ posState2 = (posState2 + 1) & p->pbMask;
+ price += GetPrice_Rep_0(p, state2, posState2);
+
+ offset = cur + len + len2;
+ while (last < offset)
+ p->opt[++last].price = kInfinityPrice;
+ // do
+ {
+ UInt32 price2;
+ COptimal *opt;
+ len2--;
+ // price2 = price + GetPrice_Len_Rep_0(p, len2, state2, posState2);
+ price2 = price + p->repLenEnc.prices[posState2][len2 - LZMA_MATCH_LEN_MIN];
+ opt = &p->opt[offset];
+ // offset--;
+ if (price2 < opt->price)
+ {
+ opt->price = price2;
+ opt->len = len2;
+ opt->extra = (CExtra)(len + 1);
+ opt->dist = dist + LZMA_NUM_REPS;
+ }
+ }
+ // while (len2 >= 3);
+ }
+
+ offs += 2;
+ if (offs == numPairs)
+ break;
+ dist = matches[(size_t)offs + 1];
+ // if (dist >= kNumFullDistances)
+ GetPosSlot2(dist, posSlot);
+ }
+ }
+ }
+ }
+}
+
+
+
+#define ChangePair(smallDist, bigDist) (((bigDist) >> 7) > (smallDist))
+
+
+
+static unsigned GetOptimumFast(CLzmaEnc *p)
+{
+ UInt32 numAvail, mainDist;
+ unsigned mainLen, numPairs, repIndex, repLen, i;
+ const Byte *data;
+
+ if (p->additionalOffset == 0)
+ mainLen = ReadMatchDistances(p, &numPairs);
+ else
+ {
+ mainLen = p->longestMatchLen;
+ numPairs = p->numPairs;
+ }
+
+ numAvail = p->numAvail;
+ p->backRes = MARK_LIT;
+ if (numAvail < 2)
+ return 1;
+ if (numAvail > LZMA_MATCH_LEN_MAX)
+ numAvail = LZMA_MATCH_LEN_MAX;
+ data = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - 1;
+ repLen = repIndex = 0;
+
+ for (i = 0; i < LZMA_NUM_REPS; i++)
+ {
+ unsigned len;
+ const Byte *data2 = data - p->reps[i];
+ if (data[0] != data2[0] || data[1] != data2[1])
+ continue;
+ for (len = 2; len < numAvail && data[len] == data2[len]; len++);
+ if (len >= p->numFastBytes)
+ {
+ p->backRes = i;
+ MOVE_POS(p, len - 1)
+ return len;
+ }
+ if (len > repLen)
+ {
+ repIndex = i;
+ repLen = len;
+ }
+ }
+
+ if (mainLen >= p->numFastBytes)
+ {
+ p->backRes = p->matches[(size_t)numPairs - 1] + LZMA_NUM_REPS;
+ MOVE_POS(p, mainLen - 1)
+ return mainLen;
+ }
+
+ mainDist = 0; /* for GCC */
+
+ if (mainLen >= 2)
+ {
+ mainDist = p->matches[(size_t)numPairs - 1];
+ while (numPairs > 2)
+ {
+ UInt32 dist2;
+ if (mainLen != p->matches[(size_t)numPairs - 4] + 1)
+ break;
+ dist2 = p->matches[(size_t)numPairs - 3];
+ if (!ChangePair(dist2, mainDist))
+ break;
+ numPairs -= 2;
+ mainLen--;
+ mainDist = dist2;
+ }
+ if (mainLen == 2 && mainDist >= 0x80)
+ mainLen = 1;
+ }
+
+ if (repLen >= 2)
+ if ( repLen + 1 >= mainLen
+ || (repLen + 2 >= mainLen && mainDist >= (1 << 9))
+ || (repLen + 3 >= mainLen && mainDist >= (1 << 15)))
+ {
+ p->backRes = repIndex;
+ MOVE_POS(p, repLen - 1)
+ return repLen;
+ }
+
+ if (mainLen < 2 || numAvail <= 2)
+ return 1;
+
+ {
+ unsigned len1 = ReadMatchDistances(p, &p->numPairs);
+ p->longestMatchLen = len1;
+
+ if (len1 >= 2)
+ {
+ UInt32 newDist = p->matches[(size_t)p->numPairs - 1];
+ if ( (len1 >= mainLen && newDist < mainDist)
+ || (len1 == mainLen + 1 && !ChangePair(mainDist, newDist))
+ || (len1 > mainLen + 1)
+ || (len1 + 1 >= mainLen && mainLen >= 3 && ChangePair(newDist, mainDist)))
+ return 1;
+ }
+ }
+
+ data = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - 1;
+
+ for (i = 0; i < LZMA_NUM_REPS; i++)
+ {
+ unsigned len, limit;
+ const Byte *data2 = data - p->reps[i];
+ if (data[0] != data2[0] || data[1] != data2[1])
+ continue;
+ limit = mainLen - 1;
+ for (len = 2;; len++)
+ {
+ if (len >= limit)
+ return 1;
+ if (data[len] != data2[len])
+ break;
+ }
+ }
+
+ p->backRes = mainDist + LZMA_NUM_REPS;
+ if (mainLen != 2)
+ {
+ MOVE_POS(p, mainLen - 2)
+ }
+ return mainLen;
+}
+
+
+
+
+static void WriteEndMarker(CLzmaEnc *p, unsigned posState)
+{
+ UInt32 range;
+ range = p->rc.range;
+ {
+ UInt32 ttt, newBound;
+ CLzmaProb *prob = &p->isMatch[p->state][posState];
+ RC_BIT_PRE(&p->rc, prob)
+ RC_BIT_1(&p->rc, prob)
+ prob = &p->isRep[p->state];
+ RC_BIT_PRE(&p->rc, prob)
+ RC_BIT_0(&p->rc, prob)
+ }
+ p->state = kMatchNextStates[p->state];
+
+ p->rc.range = range;
+ LenEnc_Encode(&p->lenProbs, &p->rc, 0, posState);
+ range = p->rc.range;
+
+ {
+ // RcTree_Encode_PosSlot(&p->rc, p->posSlotEncoder[0], (1 << kNumPosSlotBits) - 1);
+ CLzmaProb *probs = p->posSlotEncoder[0];
+ unsigned m = 1;
+ do
+ {
+ UInt32 ttt, newBound;
+ RC_BIT_PRE(p, probs + m)
+ RC_BIT_1(&p->rc, probs + m);
+ m = (m << 1) + 1;
+ }
+ while (m < (1 << kNumPosSlotBits));
+ }
+ {
+ // RangeEnc_EncodeDirectBits(&p->rc, ((UInt32)1 << (30 - kNumAlignBits)) - 1, 30 - kNumAlignBits); UInt32 range = p->range;
+ unsigned numBits = 30 - kNumAlignBits;
+ do
+ {
+ range >>= 1;
+ p->rc.low += range;
+ RC_NORM(&p->rc)
+ }
+ while (--numBits);
+ }
+
+ {
+ // RcTree_ReverseEncode(&p->rc, p->posAlignEncoder, kNumAlignBits, kAlignMask);
+ CLzmaProb *probs = p->posAlignEncoder;
+ unsigned m = 1;
+ do
+ {
+ UInt32 ttt, newBound;
+ RC_BIT_PRE(p, probs + m)
+ RC_BIT_1(&p->rc, probs + m);
+ m = (m << 1) + 1;
+ }
+ while (m < kAlignTableSize);
+ }
+ p->rc.range = range;
+}
+
+
+static SRes CheckErrors(CLzmaEnc *p)
+{
+ if (p->result != SZ_OK)
+ return p->result;
+ if (p->rc.res != SZ_OK)
+ p->result = SZ_ERROR_WRITE;
+ if (p->matchFinderBase.result != SZ_OK)
+ p->result = SZ_ERROR_READ;
+ if (p->result != SZ_OK)
+ p->finished = True;
+ return p->result;
+}
+
+
+MY_NO_INLINE static SRes Flush(CLzmaEnc *p, UInt32 nowPos)
+{
+ /* ReleaseMFStream(); */
+ p->finished = True;
+ if (p->writeEndMark)
+ WriteEndMarker(p, nowPos & p->pbMask);
+ RangeEnc_FlushData(&p->rc);
+ RangeEnc_FlushStream(&p->rc);
+ return CheckErrors(p);
+}
+
+
+
+static void FillAlignPrices(CLzmaEnc *p)
+{
+ unsigned i;
+ const CProbPrice *ProbPrices = p->ProbPrices;
+ const CLzmaProb *probs = p->posAlignEncoder;
+ p->alignPriceCount = 0;
+ for (i = 0; i < kAlignTableSize / 2; i++)
+ {
+ UInt32 price = 0;
+ unsigned symbol = i;
+ unsigned m = 1;
+ unsigned bit;
+ UInt32 prob;
+ bit = symbol & 1; symbol >>= 1; price += GET_PRICEa(probs[m], bit); m = (m << 1) + bit;
+ bit = symbol & 1; symbol >>= 1; price += GET_PRICEa(probs[m], bit); m = (m << 1) + bit;
+ bit = symbol & 1; symbol >>= 1; price += GET_PRICEa(probs[m], bit); m = (m << 1) + bit;
+ prob = probs[m];
+ p->alignPrices[i ] = price + GET_PRICEa_0(prob);
+ p->alignPrices[i + 8] = price + GET_PRICEa_1(prob);
+ // p->alignPrices[i] = RcTree_ReverseGetPrice(p->posAlignEncoder, kNumAlignBits, i, p->ProbPrices);
+ }
+}
+
+
+static void FillDistancesPrices(CLzmaEnc *p)
+{
+ UInt32 tempPrices[kNumFullDistances];
+ unsigned i, lenToPosState;
+
+ const CProbPrice *ProbPrices = p->ProbPrices;
+ p->matchPriceCount = 0;
+
+ for (i = kStartPosModelIndex; i < kNumFullDistances; i++)
+ {
+ unsigned posSlot = GetPosSlot1(i);
+ unsigned footerBits = ((posSlot >> 1) - 1);
+ unsigned base = ((2 | (posSlot & 1)) << footerBits);
+ // tempPrices[i] = RcTree_ReverseGetPrice(p->posEncoders + base, footerBits, i - base, p->ProbPrices);
+
+ const CLzmaProb *probs = p->posEncoders + base;
+ UInt32 price = 0;
+ unsigned m = 1;
+ unsigned symbol = i - base;
+ do
+ {
+ unsigned bit = symbol & 1;
+ symbol >>= 1;
+ price += GET_PRICEa(probs[m], bit);
+ m = (m << 1) + bit;
+ }
+ while (--footerBits);
+ tempPrices[i] = price;
+ }
+
+ for (lenToPosState = 0; lenToPosState < kNumLenToPosStates; lenToPosState++)
+ {
+ unsigned posSlot;
+ const CLzmaProb *encoder = p->posSlotEncoder[lenToPosState];
+ UInt32 *posSlotPrices = p->posSlotPrices[lenToPosState];
+ unsigned distTableSize = p->distTableSize;
+ const CLzmaProb *probs = encoder;
+ for (posSlot = 0; posSlot < distTableSize; posSlot += 2)
+ {
+ // posSlotPrices[posSlot] = RcTree_GetPrice(encoder, kNumPosSlotBits, posSlot, p->ProbPrices);
+ UInt32 price = 0;
+ unsigned bit;
+ unsigned symbol = (posSlot >> 1) + (1 << (kNumPosSlotBits - 1));
+ UInt32 prob;
+ bit = symbol & 1; symbol >>= 1; price += GET_PRICEa(probs[symbol], bit);
+ bit = symbol & 1; symbol >>= 1; price += GET_PRICEa(probs[symbol], bit);
+ bit = symbol & 1; symbol >>= 1; price += GET_PRICEa(probs[symbol], bit);
+ bit = symbol & 1; symbol >>= 1; price += GET_PRICEa(probs[symbol], bit);
+ bit = symbol & 1; symbol >>= 1; price += GET_PRICEa(probs[symbol], bit);
+ prob = probs[(posSlot >> 1) + (1 << (kNumPosSlotBits - 1))];
+ posSlotPrices[posSlot ] = price + GET_PRICEa_0(prob);
+ posSlotPrices[posSlot + 1] = price + GET_PRICEa_1(prob);
+ }
+ for (posSlot = kEndPosModelIndex; posSlot < distTableSize; posSlot++)
+ posSlotPrices[posSlot] += ((UInt32)(((posSlot >> 1) - 1) - kNumAlignBits) << kNumBitPriceShiftBits);
+
+ {
+ UInt32 *distancesPrices = p->distancesPrices[lenToPosState];
+ {
+ distancesPrices[0] = posSlotPrices[0];
+ distancesPrices[1] = posSlotPrices[1];
+ distancesPrices[2] = posSlotPrices[2];
+ distancesPrices[3] = posSlotPrices[3];
+ }
+ for (i = 4; i < kNumFullDistances; i += 2)
+ {
+ UInt32 slotPrice = posSlotPrices[GetPosSlot1(i)];
+ distancesPrices[i ] = slotPrice + tempPrices[i];
+ distancesPrices[i + 1] = slotPrice + tempPrices[i + 1];
+ }
+ }
+ }
+}
+
+
+
+void LzmaEnc_Construct(CLzmaEnc *p)
+{
+ RangeEnc_Construct(&p->rc);
+ MatchFinder_Construct(&p->matchFinderBase);
+
+ #ifndef _7ZIP_ST
+ MatchFinderMt_Construct(&p->matchFinderMt);
+ p->matchFinderMt.MatchFinder = &p->matchFinderBase;
+ #endif
+
+ {
+ CLzmaEncProps props;
+ LzmaEncProps_Init(&props);
+ LzmaEnc_SetProps(p, &props);
+ }
+
+ #ifndef LZMA_LOG_BSR
+ LzmaEnc_FastPosInit(p->g_FastPos);
+ #endif
+
+ LzmaEnc_InitPriceTables(p->ProbPrices);
+ p->litProbs = NULL;
+ p->saveState.litProbs = NULL;
+
+}
+
+CLzmaEncHandle LzmaEnc_Create(ISzAllocPtr alloc)
+{
+ void *p;
+ p = ISzAlloc_Alloc(alloc, sizeof(CLzmaEnc));
+ if (p)
+ LzmaEnc_Construct((CLzmaEnc *)p);
+ return p;
+}
+
+void LzmaEnc_FreeLits(CLzmaEnc *p, ISzAllocPtr alloc)
+{
+ ISzAlloc_Free(alloc, p->litProbs);
+ ISzAlloc_Free(alloc, p->saveState.litProbs);
+ p->litProbs = NULL;
+ p->saveState.litProbs = NULL;
+}
+
+void LzmaEnc_Destruct(CLzmaEnc *p, ISzAllocPtr alloc, ISzAllocPtr allocBig)
+{
+ #ifndef _7ZIP_ST
+ MatchFinderMt_Destruct(&p->matchFinderMt, allocBig);
+ #endif
+
+ MatchFinder_Free(&p->matchFinderBase, allocBig);
+ LzmaEnc_FreeLits(p, alloc);
+ RangeEnc_Free(&p->rc, alloc);
+}
+
+void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAllocPtr alloc, ISzAllocPtr allocBig)
+{
+ LzmaEnc_Destruct((CLzmaEnc *)p, alloc, allocBig);
+ ISzAlloc_Free(alloc, p);
+}
+
+
+static SRes LzmaEnc_CodeOneBlock(CLzmaEnc *p, UInt32 maxPackSize, UInt32 maxUnpackSize)
+{
+ UInt32 nowPos32, startPos32;
+ if (p->needInit)
+ {
+ p->matchFinder.Init(p->matchFinderObj);
+ p->needInit = 0;
+ }
+
+ if (p->finished)
+ return p->result;
+ RINOK(CheckErrors(p));
+
+ nowPos32 = (UInt32)p->nowPos64;
+ startPos32 = nowPos32;
+
+ if (p->nowPos64 == 0)
+ {
+ unsigned numPairs;
+ Byte curByte;
+ if (p->matchFinder.GetNumAvailableBytes(p->matchFinderObj) == 0)
+ return Flush(p, nowPos32);
+ ReadMatchDistances(p, &numPairs);
+ RangeEnc_EncodeBit_0(&p->rc, &p->isMatch[kState_Start][0]);
+ // p->state = kLiteralNextStates[p->state];
+ curByte = *(p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - p->additionalOffset);
+ LitEnc_Encode(&p->rc, p->litProbs, curByte);
+ p->additionalOffset--;
+ nowPos32++;
+ }
+
+ if (p->matchFinder.GetNumAvailableBytes(p->matchFinderObj) != 0)
+
+ for (;;)
+ {
+ UInt32 dist;
+ unsigned len, posState;
+ UInt32 range, ttt, newBound;
+ CLzmaProb *probs;
+
+ if (p->fastMode)
+ len = GetOptimumFast(p);
+ else
+ {
+ unsigned oci = p->optCur;
+ if (p->optEnd == oci)
+ len = GetOptimum(p, nowPos32);
+ else
+ {
+ const COptimal *opt = &p->opt[oci];
+ len = opt->len;
+ p->backRes = opt->dist;
+ p->optCur = oci + 1;
+ }
+ }
+
+ posState = (unsigned)nowPos32 & p->pbMask;
+ range = p->rc.range;
+ probs = &p->isMatch[p->state][posState];
+
+ RC_BIT_PRE(&p->rc, probs)
+
+ dist = p->backRes;
+
+ #ifdef SHOW_STAT2
+ printf("\n pos = %6X, len = %3u pos = %6u", nowPos32, len, dist);
+ #endif
+
+ if (dist == MARK_LIT)
+ {
+ Byte curByte;
+ const Byte *data;
+ unsigned state;
+
+ RC_BIT_0(&p->rc, probs);
+ p->rc.range = range;
+ data = p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - p->additionalOffset;
+ probs = LIT_PROBS(nowPos32, *(data - 1));
+ curByte = *data;
+ state = p->state;
+ p->state = kLiteralNextStates[state];
+ if (IsLitState(state))
+ LitEnc_Encode(&p->rc, probs, curByte);
+ else
+ LitEnc_EncodeMatched(&p->rc, probs, curByte, *(data - p->reps[0]));
+ }
+ else
+ {
+ RC_BIT_1(&p->rc, probs);
+ probs = &p->isRep[p->state];
+ RC_BIT_PRE(&p->rc, probs)
+
+ if (dist < LZMA_NUM_REPS)
+ {
+ RC_BIT_1(&p->rc, probs);
+ probs = &p->isRepG0[p->state];
+ RC_BIT_PRE(&p->rc, probs)
+ if (dist == 0)
+ {
+ RC_BIT_0(&p->rc, probs);
+ probs = &p->isRep0Long[p->state][posState];
+ RC_BIT_PRE(&p->rc, probs)
+ if (len != 1)
+ {
+ RC_BIT_1_BASE(&p->rc, probs);
+ }
+ else
+ {
+ RC_BIT_0_BASE(&p->rc, probs);
+ p->state = kShortRepNextStates[p->state];
+ }
+ }
+ else
+ {
+ RC_BIT_1(&p->rc, probs);
+ probs = &p->isRepG1[p->state];
+ RC_BIT_PRE(&p->rc, probs)
+ if (dist == 1)
+ {
+ RC_BIT_0_BASE(&p->rc, probs);
+ dist = p->reps[1];
+ }
+ else
+ {
+ RC_BIT_1(&p->rc, probs);
+ probs = &p->isRepG2[p->state];
+ RC_BIT_PRE(&p->rc, probs)
+ if (dist == 2)
+ {
+ RC_BIT_0_BASE(&p->rc, probs);
+ dist = p->reps[2];
+ }
+ else
+ {
+ RC_BIT_1_BASE(&p->rc, probs);
+ dist = p->reps[3];
+ p->reps[3] = p->reps[2];
+ }
+ p->reps[2] = p->reps[1];
+ }
+ p->reps[1] = p->reps[0];
+ p->reps[0] = dist;
+ }
+
+ RC_NORM(&p->rc)
+
+ p->rc.range = range;
+
+ if (len != 1)
+ {
+ LenEnc_Encode(&p->repLenProbs, &p->rc, len - LZMA_MATCH_LEN_MIN, posState);
+ if (!p->fastMode)
+ if (--p->repLenEnc.counters[posState] == 0)
+ LenPriceEnc_UpdateTable(&p->repLenEnc, posState, &p->repLenProbs, p->ProbPrices);
+
+ p->state = kRepNextStates[p->state];
+ }
+ }
+ else
+ {
+ unsigned posSlot;
+ RC_BIT_0(&p->rc, probs);
+ p->rc.range = range;
+ p->state = kMatchNextStates[p->state];
+
+ LenEnc_Encode(&p->lenProbs, &p->rc, len - LZMA_MATCH_LEN_MIN, posState);
+ if (!p->fastMode)
+ if (--p->lenEnc.counters[posState] == 0)
+ LenPriceEnc_UpdateTable(&p->lenEnc, posState, &p->lenProbs, p->ProbPrices);
+
+ dist -= LZMA_NUM_REPS;
+ p->reps[3] = p->reps[2];
+ p->reps[2] = p->reps[1];
+ p->reps[1] = p->reps[0];
+ p->reps[0] = dist + 1;
+
+ p->matchPriceCount++;
+ GetPosSlot(dist, posSlot);
+ // RcTree_Encode_PosSlot(&p->rc, p->posSlotEncoder[GetLenToPosState(len)], posSlot);
+ {
+ UInt32 symbol = posSlot + (1 << kNumPosSlotBits);
+ range = p->rc.range;
+ probs = p->posSlotEncoder[GetLenToPosState(len)];
+ do
+ {
+ CLzmaProb *prob = probs + (symbol >> kNumPosSlotBits);
+ UInt32 bit = (symbol >> (kNumPosSlotBits - 1)) & 1;
+ symbol <<= 1;
+ RC_BIT(&p->rc, prob, bit);
+ }
+ while (symbol < (1 << kNumPosSlotBits * 2));
+ p->rc.range = range;
+ }
+
+ if (dist >= kStartPosModelIndex)
+ {
+ unsigned footerBits = ((posSlot >> 1) - 1);
+
+ if (dist < kNumFullDistances)
+ {
+ unsigned base = ((2 | (posSlot & 1)) << footerBits);
+ RcTree_ReverseEncode(&p->rc, p->posEncoders + base, footerBits, dist - base);
+ }
+ else
+ {
+ UInt32 pos2 = (dist | 0xF) << (32 - footerBits);
+ range = p->rc.range;
+ // RangeEnc_EncodeDirectBits(&p->rc, posReduced >> kNumAlignBits, footerBits - kNumAlignBits);
+ /*
+ do
+ {
+ range >>= 1;
+ p->rc.low += range & (0 - ((dist >> --footerBits) & 1));
+ RC_NORM(&p->rc)
+ }
+ while (footerBits > kNumAlignBits);
+ */
+ do
+ {
+ range >>= 1;
+ p->rc.low += range & (0 - (pos2 >> 31));
+ pos2 += pos2;
+ RC_NORM(&p->rc)
+ }
+ while (pos2 != 0xF0000000);
+
+
+ // RcTree_ReverseEncode(&p->rc, p->posAlignEncoder, kNumAlignBits, posReduced & kAlignMask);
+
+ {
+ unsigned m = 1;
+ unsigned bit;
+ bit = dist & 1; dist >>= 1; RC_BIT(&p->rc, p->posAlignEncoder + m, bit); m = (m << 1) + bit;
+ bit = dist & 1; dist >>= 1; RC_BIT(&p->rc, p->posAlignEncoder + m, bit); m = (m << 1) + bit;
+ bit = dist & 1; dist >>= 1; RC_BIT(&p->rc, p->posAlignEncoder + m, bit); m = (m << 1) + bit;
+ bit = dist & 1; RC_BIT(&p->rc, p->posAlignEncoder + m, bit);
+ p->rc.range = range;
+ p->alignPriceCount++;
+ }
+ }
+ }
+ }
+ }
+
+ nowPos32 += len;
+ p->additionalOffset -= len;
+
+ if (p->additionalOffset == 0)
+ {
+ UInt32 processed;
+
+ if (!p->fastMode)
+ {
+ if (p->matchPriceCount >= (1 << 7))
+ FillDistancesPrices(p);
+ if (p->alignPriceCount >= kAlignTableSize)
+ FillAlignPrices(p);
+ }
+
+ if (p->matchFinder.GetNumAvailableBytes(p->matchFinderObj) == 0)
+ break;
+ processed = nowPos32 - startPos32;
+
+ if (maxPackSize)
+ {
+ if (processed + kNumOpts + 300 >= maxUnpackSize
+ || RangeEnc_GetProcessed_sizet(&p->rc) + kPackReserve >= maxPackSize)
+ break;
+ }
+ else if (processed >= (1 << 17))
+ {
+ p->nowPos64 += nowPos32 - startPos32;
+ return CheckErrors(p);
+ }
+ }
+ }
+
+ p->nowPos64 += nowPos32 - startPos32;
+ return Flush(p, nowPos32);
+}
+
+
+
+#define kBigHashDicLimit ((UInt32)1 << 24)
+
+static SRes LzmaEnc_Alloc(CLzmaEnc *p, UInt32 keepWindowSize, ISzAllocPtr alloc, ISzAllocPtr allocBig)
+{
+ UInt32 beforeSize = kNumOpts;
+ if (!RangeEnc_Alloc(&p->rc, alloc))
+ return SZ_ERROR_MEM;
+
+ #ifndef _7ZIP_ST
+ p->mtMode = (p->multiThread && !p->fastMode && (p->matchFinderBase.btMode != 0));
+ #endif
+
+ {
+ unsigned lclp = p->lc + p->lp;
+ if (!p->litProbs || !p->saveState.litProbs || p->lclp != lclp)
+ {
+ LzmaEnc_FreeLits(p, alloc);
+ p->litProbs = (CLzmaProb *)ISzAlloc_Alloc(alloc, ((UInt32)0x300 << lclp) * sizeof(CLzmaProb));
+ p->saveState.litProbs = (CLzmaProb *)ISzAlloc_Alloc(alloc, ((UInt32)0x300 << lclp) * sizeof(CLzmaProb));
+ if (!p->litProbs || !p->saveState.litProbs)
+ {
+ LzmaEnc_FreeLits(p, alloc);
+ return SZ_ERROR_MEM;
+ }
+ p->lclp = lclp;
+ }
+ }
+
+ p->matchFinderBase.bigHash = (Byte)(p->dictSize > kBigHashDicLimit ? 1 : 0);
+
+ if (beforeSize + p->dictSize < keepWindowSize)
+ beforeSize = keepWindowSize - p->dictSize;
+
+ #ifndef _7ZIP_ST
+ if (p->mtMode)
+ {
+ RINOK(MatchFinderMt_Create(&p->matchFinderMt, p->dictSize, beforeSize, p->numFastBytes,
+ LZMA_MATCH_LEN_MAX
+ + 1 /* 18.04 */
+ , allocBig));
+ p->matchFinderObj = &p->matchFinderMt;
+ p->matchFinderBase.bigHash = (Byte)(
+ (p->dictSize > kBigHashDicLimit && p->matchFinderBase.hashMask >= 0xFFFFFF) ? 1 : 0);
+ MatchFinderMt_CreateVTable(&p->matchFinderMt, &p->matchFinder);
+ }
+ else
+ #endif
+ {
+ if (!MatchFinder_Create(&p->matchFinderBase, p->dictSize, beforeSize, p->numFastBytes, LZMA_MATCH_LEN_MAX, allocBig))
+ return SZ_ERROR_MEM;
+ p->matchFinderObj = &p->matchFinderBase;
+ MatchFinder_CreateVTable(&p->matchFinderBase, &p->matchFinder);
+ }
+
+ return SZ_OK;
+}
+
+void LzmaEnc_Init(CLzmaEnc *p)
+{
+ unsigned i;
+ p->state = 0;
+ p->reps[0] =
+ p->reps[1] =
+ p->reps[2] =
+ p->reps[3] = 1;
+
+ RangeEnc_Init(&p->rc);
+
+ for (i = 0; i < (1 << kNumAlignBits); i++)
+ p->posAlignEncoder[i] = kProbInitValue;
+
+ for (i = 0; i < kNumStates; i++)
+ {
+ unsigned j;
+ for (j = 0; j < LZMA_NUM_PB_STATES_MAX; j++)
+ {
+ p->isMatch[i][j] = kProbInitValue;
+ p->isRep0Long[i][j] = kProbInitValue;
+ }
+ p->isRep[i] = kProbInitValue;
+ p->isRepG0[i] = kProbInitValue;
+ p->isRepG1[i] = kProbInitValue;
+ p->isRepG2[i] = kProbInitValue;
+ }
+
+ {
+ for (i = 0; i < kNumLenToPosStates; i++)
+ {
+ CLzmaProb *probs = p->posSlotEncoder[i];
+ unsigned j;
+ for (j = 0; j < (1 << kNumPosSlotBits); j++)
+ probs[j] = kProbInitValue;
+ }
+ }
+ {
+ for (i = 0; i < kNumFullDistances; i++)
+ p->posEncoders[i] = kProbInitValue;
+ }
+
+ {
+ UInt32 num = (UInt32)0x300 << (p->lp + p->lc);
+ UInt32 k;
+ CLzmaProb *probs = p->litProbs;
+ for (k = 0; k < num; k++)
+ probs[k] = kProbInitValue;
+ }
+
+
+ LenEnc_Init(&p->lenProbs);
+ LenEnc_Init(&p->repLenProbs);
+
+ p->optEnd = 0;
+ p->optCur = 0;
+ p->additionalOffset = 0;
+
+ p->pbMask = (1 << p->pb) - 1;
+ p->lpMask = ((UInt32)0x100 << p->lp) - ((unsigned)0x100 >> p->lc);
+}
+
+void LzmaEnc_InitPrices(CLzmaEnc *p)
+{
+ if (!p->fastMode)
+ {
+ FillDistancesPrices(p);
+ FillAlignPrices(p);
+ }
+
+ p->lenEnc.tableSize =
+ p->repLenEnc.tableSize =
+ p->numFastBytes + 1 - LZMA_MATCH_LEN_MIN;
+ LenPriceEnc_UpdateTables(&p->lenEnc, 1 << p->pb, &p->lenProbs, p->ProbPrices);
+ LenPriceEnc_UpdateTables(&p->repLenEnc, 1 << p->pb, &p->repLenProbs, p->ProbPrices);
+}
+
+static SRes LzmaEnc_AllocAndInit(CLzmaEnc *p, UInt32 keepWindowSize, ISzAllocPtr alloc, ISzAllocPtr allocBig)
+{
+ unsigned i;
+ for (i = kEndPosModelIndex / 2; i < kDicLogSizeMax; i++)
+ if (p->dictSize <= ((UInt32)1 << i))
+ break;
+ p->distTableSize = i * 2;
+
+ p->finished = False;
+ p->result = SZ_OK;
+ RINOK(LzmaEnc_Alloc(p, keepWindowSize, alloc, allocBig));
+ LzmaEnc_Init(p);
+ LzmaEnc_InitPrices(p);
+ p->nowPos64 = 0;
+ return SZ_OK;
+}
+
+static SRes LzmaEnc_Prepare(CLzmaEncHandle pp, ISeqOutStream *outStream, ISeqInStream *inStream,
+ ISzAllocPtr alloc, ISzAllocPtr allocBig)
+{
+ CLzmaEnc *p = (CLzmaEnc *)pp;
+ p->matchFinderBase.stream = inStream;
+ p->needInit = 1;
+ p->rc.outStream = outStream;
+ return LzmaEnc_AllocAndInit(p, 0, alloc, allocBig);
+}
+
+SRes LzmaEnc_PrepareForLzma2(CLzmaEncHandle pp,
+ ISeqInStream *inStream, UInt32 keepWindowSize,
+ ISzAllocPtr alloc, ISzAllocPtr allocBig)
+{
+ CLzmaEnc *p = (CLzmaEnc *)pp;
+ p->matchFinderBase.stream = inStream;
+ p->needInit = 1;
+ return LzmaEnc_AllocAndInit(p, keepWindowSize, alloc, allocBig);
+}
+
+static void LzmaEnc_SetInputBuf(CLzmaEnc *p, const Byte *src, SizeT srcLen)
+{
+ p->matchFinderBase.directInput = 1;
+ p->matchFinderBase.bufferBase = (Byte *)src;
+ p->matchFinderBase.directInputRem = srcLen;
+}
+
+SRes LzmaEnc_MemPrepare(CLzmaEncHandle pp, const Byte *src, SizeT srcLen,
+ UInt32 keepWindowSize, ISzAllocPtr alloc, ISzAllocPtr allocBig)
+{
+ CLzmaEnc *p = (CLzmaEnc *)pp;
+ LzmaEnc_SetInputBuf(p, src, srcLen);
+ p->needInit = 1;
+
+ LzmaEnc_SetDataSize(pp, srcLen);
+ return LzmaEnc_AllocAndInit(p, keepWindowSize, alloc, allocBig);
+}
+
+void LzmaEnc_Finish(CLzmaEncHandle pp)
+{
+ #ifndef _7ZIP_ST
+ CLzmaEnc *p = (CLzmaEnc *)pp;
+ if (p->mtMode)
+ MatchFinderMt_ReleaseStream(&p->matchFinderMt);
+ #else
+ UNUSED_VAR(pp);
+ #endif
+}
+
+
+typedef struct
+{
+ ISeqOutStream vt;
+ Byte *data;
+ SizeT rem;
+ Bool overflow;
+} CLzmaEnc_SeqOutStreamBuf;
+
+static size_t SeqOutStreamBuf_Write(const ISeqOutStream *pp, const void *data, size_t size)
+{
+ CLzmaEnc_SeqOutStreamBuf *p = CONTAINER_FROM_VTBL(pp, CLzmaEnc_SeqOutStreamBuf, vt);
+ if (p->rem < size)
+ {
+ size = p->rem;
+ p->overflow = True;
+ }
+ memcpy(p->data, data, size);
+ p->rem -= size;
+ p->data += size;
+ return size;
+}
+
+
+UInt32 LzmaEnc_GetNumAvailableBytes(CLzmaEncHandle pp)
+{
+ const CLzmaEnc *p = (CLzmaEnc *)pp;
+ return p->matchFinder.GetNumAvailableBytes(p->matchFinderObj);
+}
+
+
+const Byte *LzmaEnc_GetCurBuf(CLzmaEncHandle pp)
+{
+ const CLzmaEnc *p = (CLzmaEnc *)pp;
+ return p->matchFinder.GetPointerToCurrentPos(p->matchFinderObj) - p->additionalOffset;
+}
+
+
+SRes LzmaEnc_CodeOneMemBlock(CLzmaEncHandle pp, Bool reInit,
+ Byte *dest, size_t *destLen, UInt32 desiredPackSize, UInt32 *unpackSize)
+{
+ CLzmaEnc *p = (CLzmaEnc *)pp;
+ UInt64 nowPos64;
+ SRes res;
+ CLzmaEnc_SeqOutStreamBuf outStream;
+
+ outStream.vt.Write = SeqOutStreamBuf_Write;
+ outStream.data = dest;
+ outStream.rem = *destLen;
+ outStream.overflow = False;
+
+ p->writeEndMark = False;
+ p->finished = False;
+ p->result = SZ_OK;
+
+ if (reInit)
+ LzmaEnc_Init(p);
+ LzmaEnc_InitPrices(p);
+
+ nowPos64 = p->nowPos64;
+ RangeEnc_Init(&p->rc);
+ p->rc.outStream = &outStream.vt;
+
+ if (desiredPackSize == 0)
+ return SZ_ERROR_OUTPUT_EOF;
+
+ res = LzmaEnc_CodeOneBlock(p, desiredPackSize, *unpackSize);
+
+ *unpackSize = (UInt32)(p->nowPos64 - nowPos64);
+ *destLen -= outStream.rem;
+ if (outStream.overflow)
+ return SZ_ERROR_OUTPUT_EOF;
+
+ return res;
+}
+
+
+static SRes LzmaEnc_Encode2(CLzmaEnc *p, ICompressProgress *progress)
+{
+ SRes res = SZ_OK;
+
+ #ifndef _7ZIP_ST
+ Byte allocaDummy[0x300];
+ allocaDummy[0] = 0;
+ allocaDummy[1] = allocaDummy[0];
+ #endif
+
+ for (;;)
+ {
+ res = LzmaEnc_CodeOneBlock(p, 0, 0);
+ if (res != SZ_OK || p->finished)
+ break;
+ if (progress)
+ {
+ res = ICompressProgress_Progress(progress, p->nowPos64, RangeEnc_GetProcessed(&p->rc));
+ if (res != SZ_OK)
+ {
+ res = SZ_ERROR_PROGRESS;
+ break;
+ }
+ }
+ }
+
+ LzmaEnc_Finish(p);
+
+ /*
+ if (res == SZ_OK && !Inline_MatchFinder_IsFinishedOK(&p->matchFinderBase))
+ res = SZ_ERROR_FAIL;
+ }
+ */
+
+ return res;
+}
+
+
+SRes LzmaEnc_Encode(CLzmaEncHandle pp, ISeqOutStream *outStream, ISeqInStream *inStream, ICompressProgress *progress,
+ ISzAllocPtr alloc, ISzAllocPtr allocBig)
+{
+ RINOK(LzmaEnc_Prepare(pp, outStream, inStream, alloc, allocBig));
+ return LzmaEnc_Encode2((CLzmaEnc *)pp, progress);
+}
+
+
+SRes LzmaEnc_WriteProperties(CLzmaEncHandle pp, Byte *props, SizeT *size)
+{
+ CLzmaEnc *p = (CLzmaEnc *)pp;
+ unsigned i;
+ UInt32 dictSize = p->dictSize;
+ if (*size < LZMA_PROPS_SIZE)
+ return SZ_ERROR_PARAM;
+ *size = LZMA_PROPS_SIZE;
+ props[0] = (Byte)((p->pb * 5 + p->lp) * 9 + p->lc);
+
+ if (dictSize >= ((UInt32)1 << 22))
+ {
+ UInt32 kDictMask = ((UInt32)1 << 20) - 1;
+ if (dictSize < (UInt32)0xFFFFFFFF - kDictMask)
+ dictSize = (dictSize + kDictMask) & ~kDictMask;
+ }
+ else for (i = 11; i <= 30; i++)
+ {
+ if (dictSize <= ((UInt32)2 << i)) { dictSize = (2 << i); break; }
+ if (dictSize <= ((UInt32)3 << i)) { dictSize = (3 << i); break; }
+ }
+
+ for (i = 0; i < 4; i++)
+ props[1 + i] = (Byte)(dictSize >> (8 * i));
+ return SZ_OK;
+}
+
+
+unsigned LzmaEnc_IsWriteEndMark(CLzmaEncHandle pp)
+{
+ return ((CLzmaEnc *)pp)->writeEndMark;
+}
+
+
+SRes LzmaEnc_MemEncode(CLzmaEncHandle pp, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
+ int writeEndMark, ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig)
+{
+ SRes res;
+ CLzmaEnc *p = (CLzmaEnc *)pp;
+
+ CLzmaEnc_SeqOutStreamBuf outStream;
+
+ outStream.vt.Write = SeqOutStreamBuf_Write;
+ outStream.data = dest;
+ outStream.rem = *destLen;
+ outStream.overflow = False;
+
+ p->writeEndMark = writeEndMark;
+ p->rc.outStream = &outStream.vt;
+
+ res = LzmaEnc_MemPrepare(pp, src, srcLen, 0, alloc, allocBig);
+
+ if (res == SZ_OK)
+ {
+ res = LzmaEnc_Encode2(p, progress);
+ if (res == SZ_OK && p->nowPos64 != srcLen)
+ res = SZ_ERROR_FAIL;
+ }
+
+ *destLen -= outStream.rem;
+ if (outStream.overflow)
+ return SZ_ERROR_OUTPUT_EOF;
+ return res;
+}
+
+
+SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
+ const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,
+ ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig)
+{
+ CLzmaEnc *p = (CLzmaEnc *)LzmaEnc_Create(alloc);
+ SRes res;
+ if (!p)
+ return SZ_ERROR_MEM;
+
+ res = LzmaEnc_SetProps(p, props);
+ if (res == SZ_OK)
+ {
+ res = LzmaEnc_WriteProperties(p, propsEncoded, propsSize);
+ if (res == SZ_OK)
+ res = LzmaEnc_MemEncode(p, dest, destLen, src, srcLen,
+ writeEndMark, progress, alloc, allocBig);
+ }
+
+ LzmaEnc_Destroy(p, alloc, allocBig);
+ return res;
+}
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