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-rw-r--r--src/lib/lib7z/LzmaDec.c1014
1 files changed, 0 insertions, 1014 deletions
diff --git a/src/lib/lib7z/LzmaDec.c b/src/lib/lib7z/LzmaDec.c
deleted file mode 100644
index cf4c2261f2e..00000000000
--- a/src/lib/lib7z/LzmaDec.c
+++ /dev/null
@@ -1,1014 +0,0 @@
-/* LzmaDec.c -- LZMA Decoder
-2010-12-15 : Igor Pavlov : Public domain */
-
-#include "LzmaDec.h"
-
-#include <string.h>
-
-#define kNumTopBits 24
-#define kTopValue ((UInt32)1 << kNumTopBits)
-
-#define kNumBitModelTotalBits 11
-#define kBitModelTotal (1 << kNumBitModelTotalBits)
-#define kNumMoveBits 5
-
-#define RC_INIT_SIZE 5
-
-#define NORMALIZE if (range < kTopValue) { range <<= 8; code = (code << 8) | (*buf++); }
-
-#define IF_BIT_0(p) ttt = *(p); NORMALIZE; bound = (range >> kNumBitModelTotalBits) * ttt; if (code < bound)
-#define UPDATE_0(p) range = bound; *(p) = (CLzmaProb)(ttt + ((kBitModelTotal - ttt) >> kNumMoveBits));
-#define UPDATE_1(p) range -= bound; code -= bound; *(p) = (CLzmaProb)(ttt - (ttt >> kNumMoveBits));
-#define GET_BIT2(p, i, A0, A1) IF_BIT_0(p) \
- { UPDATE_0(p); i = (i + i); A0; } else \
- { UPDATE_1(p); i = (i + i) + 1; A1; }
-#define GET_BIT(p, i) GET_BIT2(p, i, ; , ;)
-
-#define TREE_GET_BIT(probs, i) { GET_BIT((probs + i), i); }
-#define TREE_DECODE(probs, limit, i) \
- { i = 1; do { TREE_GET_BIT(probs, i); } while (i < limit); i -= limit; }
-
-/* #define _LZMA_SIZE_OPT */
-
-#ifdef _LZMA_SIZE_OPT
-#define TREE_6_DECODE(probs, i) TREE_DECODE(probs, (1 << 6), i)
-#else
-#define TREE_6_DECODE(probs, i) \
- { 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; }
-#endif
-
-#define NORMALIZE_CHECK if (range < kTopValue) { if (buf >= bufLimit) return DUMMY_ERROR; range <<= 8; code = (code << 8) | (*buf++); }
-
-#define IF_BIT_0_CHECK(p) ttt = *(p); NORMALIZE_CHECK; bound = (range >> kNumBitModelTotalBits) * ttt; if (code < bound)
-#define UPDATE_0_CHECK range = bound;
-#define UPDATE_1_CHECK range -= bound; code -= bound;
-#define GET_BIT2_CHECK(p, i, A0, A1) IF_BIT_0_CHECK(p) \
- { UPDATE_0_CHECK; i = (i + i); A0; } else \
- { UPDATE_1_CHECK; i = (i + i) + 1; A1; }
-#define GET_BIT_CHECK(p, i) GET_BIT2_CHECK(p, i, ; , ;)
-#define TREE_DECODE_CHECK(probs, limit, i) \
- { i = 1; do { GET_BIT_CHECK(probs + i, i) } while (i < limit); i -= limit; }
-
-
-#define kNumPosBitsMax 4
-#define kNumPosStatesMax (1 << kNumPosBitsMax)
-
-#define kLenNumLowBits 3
-#define kLenNumLowSymbols (1 << kLenNumLowBits)
-#define kLenNumMidBits 3
-#define kLenNumMidSymbols (1 << kLenNumMidBits)
-#define kLenNumHighBits 8
-#define kLenNumHighSymbols (1 << kLenNumHighBits)
-
-#define LenChoice 0
-#define LenChoice2 (LenChoice + 1)
-#define LenLow (LenChoice2 + 1)
-#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))
-#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))
-#define kNumLenProbs (LenHigh + kLenNumHighSymbols)
-
-
-#define kNumStates 12
-#define kNumLitStates 7
-
-#define kStartPosModelIndex 4
-#define kEndPosModelIndex 14
-#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
-
-#define kNumPosSlotBits 6
-#define kNumLenToPosStates 4
-
-#define kNumAlignBits 4
-#define kAlignTableSize (1 << kNumAlignBits)
-
-#define kMatchMinLen 2
-#define kMatchSpecLenStart (kMatchMinLen + kLenNumLowSymbols + kLenNumMidSymbols + kLenNumHighSymbols)
-
-#define IsMatch 0
-#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax))
-#define IsRepG0 (IsRep + kNumStates)
-#define IsRepG1 (IsRepG0 + kNumStates)
-#define IsRepG2 (IsRepG1 + kNumStates)
-#define IsRep0Long (IsRepG2 + kNumStates)
-#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))
-#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))
-#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex)
-#define LenCoder (Align + kAlignTableSize)
-#define RepLenCoder (LenCoder + kNumLenProbs)
-#define Literal (RepLenCoder + kNumLenProbs)
-
-#define LZMA_BASE_SIZE 1846
-#define LZMA_LIT_SIZE 768
-
-#define LzmaProps_GetNumProbs(p) ((UInt32)LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((p)->lc + (p)->lp)))
-
-#if Literal != LZMA_BASE_SIZE
-StopCompilingDueBUG
-#endif
-
-#define LZMA_DIC_MIN (1 << 12)
-
-/* First LZMA-symbol is always decoded.
-And it decodes new LZMA-symbols while (buf < bufLimit), but "buf" is without last normalization
-Out:
- Result:
- SZ_OK - OK
- SZ_ERROR_DATA - Error
- p->remainLen:
- < kMatchSpecLenStart : normal remain
- = kMatchSpecLenStart : finished
- = kMatchSpecLenStart + 1 : Flush marker
- = kMatchSpecLenStart + 2 : State Init Marker
-*/
-
-static int MY_FAST_CALL LzmaDec_DecodeReal(CLzmaDec *p, SizeT limit, const Byte *bufLimit)
-{
- 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 void MY_FAST_CALL LzmaDec_WriteRem(CLzmaDec *p, SizeT limit)
-{
- 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)
- {
- len--;
- dic[dicPos] = dic[(dicPos - rep0) + ((dicPos < rep0) ? dicBufSize : 0)];
- dicPos++;
- }
- p->dicPos = dicPos;
- }
-}
-
-static int MY_FAST_CALL LzmaDec_DecodeReal2(CLzmaDec *p, SizeT limit, const Byte *bufLimit)
-{
- 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;
-}
-
-typedef enum
-{
- DUMMY_ERROR, /* unexpected end of input stream */
- DUMMY_LIT,
- DUMMY_MATCH,
- DUMMY_REP
-} ELzmaDummy;
-
-static ELzmaDummy LzmaDec_TryDummy(const CLzmaDec *p, const Byte *buf, SizeT inSize)
-{
- 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_InitRc(CLzmaDec *p, const Byte *data)
-{
- p->code = ((UInt32)data[1] << 24) | ((UInt32)data[2] << 16) | ((UInt32)data[3] << 8) | ((UInt32)data[4]);
- p->range = 0xFFFFFFFF;
- p->needFlush = 0;
-}
-
-void LzmaDec_InitDicAndState(CLzmaDec *p, Bool initDic, Bool initState)
-{
- 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;
-}
-
-void LzmaDec_Init(CLzmaDec *p)
-{
- p->dicPos = 0;
- LzmaDec_InitDicAndState(p, True, True);
-}
-
-static void LzmaDec_InitStateReal(CLzmaDec *p)
-{
- 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;
-}
-
-SRes LzmaDec_DecodeToDic(CLzmaDec *p, SizeT dicLimit, const Byte *src, SizeT *srcLen,
- ELzmaFinishMode finishMode, ELzmaStatus *status)
-{
- 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;
-}
-
-SRes LzmaDec_DecodeToBuf(CLzmaDec *p, Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen, ELzmaFinishMode finishMode, ELzmaStatus *status)
-{
- 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;
- }
-}
-
-void LzmaDec_FreeProbs(CLzmaDec *p, ISzAlloc *alloc)
-{
- alloc->Free(alloc, p->probs);
- p->probs = 0;
-}
-
-static void LzmaDec_FreeDict(CLzmaDec *p, ISzAlloc *alloc)
-{
- alloc->Free(alloc, p->dic);
- p->dic = 0;
-}
-
-void LzmaDec_Free(CLzmaDec *p, ISzAlloc *alloc)
-{
- LzmaDec_FreeProbs(p, alloc);
- LzmaDec_FreeDict(p, alloc);
-}
-
-SRes LzmaProps_Decode(CLzmaProps *p, const Byte *data, unsigned size)
-{
- 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;
-}
-
-static SRes LzmaDec_AllocateProbs2(CLzmaDec *p, const CLzmaProps *propNew, ISzAlloc *alloc)
-{
- UInt32 numProbs = LzmaProps_GetNumProbs(propNew);
- if (p->probs == 0 || numProbs != p->numProbs)
- {
- LzmaDec_FreeProbs(p, alloc);
- p->probs = (CLzmaProb *)alloc->Alloc(alloc, numProbs * sizeof(CLzmaProb));
- p->numProbs = numProbs;
- if (p->probs == 0)
- return SZ_ERROR_MEM;
- }
- return SZ_OK;
-}
-
-SRes LzmaDec_AllocateProbs(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc)
-{
- CLzmaProps propNew;
- RINOK(LzmaProps_Decode(&propNew, props, propsSize));
- RINOK(LzmaDec_AllocateProbs2(p, &propNew, alloc));
- p->prop = propNew;
- return SZ_OK;
-}
-
-SRes LzmaDec_Allocate(CLzmaDec *p, const Byte *props, unsigned propsSize, ISzAlloc *alloc)
-{
- CLzmaProps propNew;
- SizeT dicBufSize;
- RINOK(LzmaProps_Decode(&propNew, props, propsSize));
- RINOK(LzmaDec_AllocateProbs2(p, &propNew, alloc));
- dicBufSize = propNew.dicSize;
- if (p->dic == 0 || dicBufSize != p->dicBufSize)
- {
- LzmaDec_FreeDict(p, alloc);
- p->dic = (Byte *)alloc->Alloc(alloc, dicBufSize);
- if (p->dic == 0)
- {
- LzmaDec_FreeProbs(p, alloc);
- return SZ_ERROR_MEM;
- }
- }
- p->dicBufSize = dicBufSize;
- p->prop = propNew;
- return SZ_OK;
-}
-
-// why isn't there an interface to pass in the properties directly????
-SRes LzmaDec_Allocate_MAME(CLzmaDec *p, const CLzmaProps *propNew, ISzAlloc *alloc)
-{
- SizeT dicBufSize;
- RINOK(LzmaDec_AllocateProbs2(p, propNew, alloc));
- dicBufSize = propNew->dicSize;
- if (p->dic == 0 || dicBufSize != p->dicBufSize)
- {
- LzmaDec_FreeDict(p, alloc);
- p->dic = (Byte *)alloc->Alloc(alloc, dicBufSize);
- if (p->dic == 0)
- {
- LzmaDec_FreeProbs(p, alloc);
- return SZ_ERROR_MEM;
- }
- }
- p->dicBufSize = dicBufSize;
- p->prop = *propNew;
- return SZ_OK;
-}
-
-SRes LzmaDecode(Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
- const Byte *propData, unsigned propSize, ELzmaFinishMode finishMode,
- ELzmaStatus *status, ISzAlloc *alloc)
-{
- CLzmaDec p;
- SRes res;
- SizeT outSize = *destLen, inSize = *srcLen;
- *destLen = *srcLen = 0;
- *status = LZMA_STATUS_NOT_SPECIFIED;
- if (inSize < RC_INIT_SIZE)
- return SZ_ERROR_INPUT_EOF;
- LzmaDec_Construct(&p);
- RINOK(LzmaDec_AllocateProbs(&p, propData, propSize, alloc));
- p.dic = dest;
- p.dicBufSize = outSize;
- LzmaDec_Init(&p);
- *srcLen = inSize;
- res = LzmaDec_DecodeToDic(&p, outSize, src, srcLen, finishMode, status);
- *destLen = p.dicPos;
- if (res == SZ_OK && *status == LZMA_STATUS_NEEDS_MORE_INPUT)
- res = SZ_ERROR_INPUT_EOF;
- LzmaDec_FreeProbs(&p, alloc);
- return res;
-}