From 4aca87515a5083ae0e31ce3177189fd43b6d05ac Mon Sep 17 00:00:00 2001 From: Andreas Baumann Date: Sat, 3 Jan 2015 13:58:15 +0100 Subject: patch to Vanilla Tomato 1.28 --- .../lzma/C/7zip/Compress/LZMA_C/LzmaDecodeSize.c | 716 +++++++++++++++++++++ 1 file changed, 716 insertions(+) create mode 100644 release/src/linux/linux/scripts/squashfs/lzma/C/7zip/Compress/LZMA_C/LzmaDecodeSize.c (limited to 'release/src/linux/linux/scripts/squashfs/lzma/C/7zip/Compress/LZMA_C/LzmaDecodeSize.c') diff --git a/release/src/linux/linux/scripts/squashfs/lzma/C/7zip/Compress/LZMA_C/LzmaDecodeSize.c b/release/src/linux/linux/scripts/squashfs/lzma/C/7zip/Compress/LZMA_C/LzmaDecodeSize.c new file mode 100644 index 00000000..fe24cf21 --- /dev/null +++ b/release/src/linux/linux/scripts/squashfs/lzma/C/7zip/Compress/LZMA_C/LzmaDecodeSize.c @@ -0,0 +1,716 @@ +/* + LzmaDecodeSize.c + LZMA Decoder (optimized for Size version) + + LZMA SDK 4.27 Copyright (c) 1999-2005 Igor Pavlov (2005-08-07) + http://www.7-zip.org/ + + LZMA SDK is licensed under two licenses: + 1) GNU Lesser General Public License (GNU LGPL) + 2) Common Public License (CPL) + It means that you can select one of these two licenses and + follow rules of that license. + + SPECIAL EXCEPTION: + Igor Pavlov, as the author of this code, expressly permits you to + statically or dynamically link your code (or bind by name) to the + interfaces of this file without subjecting your linked code to the + terms of the CPL or GNU LGPL. Any modifications or additions + to this file, however, are subject to the LGPL or CPL terms. +*/ + +#include "LzmaDecode.h" + +#ifndef Byte +#define Byte unsigned char +#endif + +#define kNumTopBits 24 +#define kTopValue ((UInt32)1 << kNumTopBits) + +#define kNumBitModelTotalBits 11 +#define kBitModelTotal (1 << kNumBitModelTotalBits) +#define kNumMoveBits 5 + +typedef struct _CRangeDecoder +{ + const Byte *Buffer; + const Byte *BufferLim; + UInt32 Range; + UInt32 Code; + #ifdef _LZMA_IN_CB + ILzmaInCallback *InCallback; + int Result; + #endif + int ExtraBytes; +} CRangeDecoder; + +Byte RangeDecoderReadByte(CRangeDecoder *rd) +{ + if (rd->Buffer == rd->BufferLim) + { + #ifdef _LZMA_IN_CB + SizeT size; + rd->Result = rd->InCallback->Read(rd->InCallback, &rd->Buffer, &size); + rd->BufferLim = rd->Buffer + size; + if (size == 0) + #endif + { + rd->ExtraBytes = 1; + return 0xFF; + } + } + return (*rd->Buffer++); +} + +/* #define ReadByte (*rd->Buffer++) */ +#define ReadByte (RangeDecoderReadByte(rd)) + +void RangeDecoderInit(CRangeDecoder *rd + #ifndef _LZMA_IN_CB + , const Byte *stream, SizeT bufferSize + #endif + ) +{ + int i; + #ifdef _LZMA_IN_CB + rd->Buffer = rd->BufferLim = 0; + #else + rd->Buffer = stream; + rd->BufferLim = stream + bufferSize; + #endif + rd->ExtraBytes = 0; + rd->Code = 0; + rd->Range = (0xFFFFFFFF); + for(i = 0; i < 5; i++) + rd->Code = (rd->Code << 8) | ReadByte; +} + +#define RC_INIT_VAR UInt32 range = rd->Range; UInt32 code = rd->Code; +#define RC_FLUSH_VAR rd->Range = range; rd->Code = code; +#define RC_NORMALIZE if (range < kTopValue) { range <<= 8; code = (code << 8) | ReadByte; } + +UInt32 RangeDecoderDecodeDirectBits(CRangeDecoder *rd, int numTotalBits) +{ + RC_INIT_VAR + UInt32 result = 0; + int i; + for (i = numTotalBits; i != 0; i--) + { + /* UInt32 t; */ + range >>= 1; + + result <<= 1; + if (code >= range) + { + code -= range; + result |= 1; + } + /* + t = (code - range) >> 31; + t &= 1; + code -= range & (t - 1); + result = (result + result) | (1 - t); + */ + RC_NORMALIZE + } + RC_FLUSH_VAR + return result; +} + +int RangeDecoderBitDecode(CProb *prob, CRangeDecoder *rd) +{ + UInt32 bound = (rd->Range >> kNumBitModelTotalBits) * *prob; + if (rd->Code < bound) + { + rd->Range = bound; + *prob += (kBitModelTotal - *prob) >> kNumMoveBits; + if (rd->Range < kTopValue) + { + rd->Code = (rd->Code << 8) | ReadByte; + rd->Range <<= 8; + } + return 0; + } + else + { + rd->Range -= bound; + rd->Code -= bound; + *prob -= (*prob) >> kNumMoveBits; + if (rd->Range < kTopValue) + { + rd->Code = (rd->Code << 8) | ReadByte; + rd->Range <<= 8; + } + return 1; + } +} + +#define RC_GET_BIT2(prob, mi, A0, A1) \ + UInt32 bound = (range >> kNumBitModelTotalBits) * *prob; \ + if (code < bound) \ + { A0; range = bound; *prob += (kBitModelTotal - *prob) >> kNumMoveBits; mi <<= 1; } \ + else \ + { A1; range -= bound; code -= bound; *prob -= (*prob) >> kNumMoveBits; mi = (mi + mi) + 1; } \ + RC_NORMALIZE + +#define RC_GET_BIT(prob, mi) RC_GET_BIT2(prob, mi, ; , ;) + +int RangeDecoderBitTreeDecode(CProb *probs, int numLevels, CRangeDecoder *rd) +{ + int mi = 1; + int i; + #ifdef _LZMA_LOC_OPT + RC_INIT_VAR + #endif + for(i = numLevels; i != 0; i--) + { + #ifdef _LZMA_LOC_OPT + CProb *prob = probs + mi; + RC_GET_BIT(prob, mi) + #else + mi = (mi + mi) + RangeDecoderBitDecode(probs + mi, rd); + #endif + } + #ifdef _LZMA_LOC_OPT + RC_FLUSH_VAR + #endif + return mi - (1 << numLevels); +} + +int RangeDecoderReverseBitTreeDecode(CProb *probs, int numLevels, CRangeDecoder *rd) +{ + int mi = 1; + int i; + int symbol = 0; + #ifdef _LZMA_LOC_OPT + RC_INIT_VAR + #endif + for(i = 0; i < numLevels; i++) + { + #ifdef _LZMA_LOC_OPT + CProb *prob = probs + mi; + RC_GET_BIT2(prob, mi, ; , symbol |= (1 << i)) + #else + int bit = RangeDecoderBitDecode(probs + mi, rd); + mi = mi + mi + bit; + symbol |= (bit << i); + #endif + } + #ifdef _LZMA_LOC_OPT + RC_FLUSH_VAR + #endif + return symbol; +} + +Byte LzmaLiteralDecode(CProb *probs, CRangeDecoder *rd) +{ + int symbol = 1; + #ifdef _LZMA_LOC_OPT + RC_INIT_VAR + #endif + do + { + #ifdef _LZMA_LOC_OPT + CProb *prob = probs + symbol; + RC_GET_BIT(prob, symbol) + #else + symbol = (symbol + symbol) | RangeDecoderBitDecode(probs + symbol, rd); + #endif + } + while (symbol < 0x100); + #ifdef _LZMA_LOC_OPT + RC_FLUSH_VAR + #endif + return symbol; +} + +Byte LzmaLiteralDecodeMatch(CProb *probs, CRangeDecoder *rd, Byte matchByte) +{ + int symbol = 1; + #ifdef _LZMA_LOC_OPT + RC_INIT_VAR + #endif + do + { + int bit; + int matchBit = (matchByte >> 7) & 1; + matchByte <<= 1; + #ifdef _LZMA_LOC_OPT + { + CProb *prob = probs + 0x100 + (matchBit << 8) + symbol; + RC_GET_BIT2(prob, symbol, bit = 0, bit = 1) + } + #else + bit = RangeDecoderBitDecode(probs + 0x100 + (matchBit << 8) + symbol, rd); + symbol = (symbol << 1) | bit; + #endif + if (matchBit != bit) + { + while (symbol < 0x100) + { + #ifdef _LZMA_LOC_OPT + CProb *prob = probs + symbol; + RC_GET_BIT(prob, symbol) + #else + symbol = (symbol + symbol) | RangeDecoderBitDecode(probs + symbol, rd); + #endif + } + break; + } + } + while (symbol < 0x100); + #ifdef _LZMA_LOC_OPT + RC_FLUSH_VAR + #endif + return symbol; +} + +#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) + +int LzmaLenDecode(CProb *p, CRangeDecoder *rd, int posState) +{ + if(RangeDecoderBitDecode(p + LenChoice, rd) == 0) + return RangeDecoderBitTreeDecode(p + LenLow + + (posState << kLenNumLowBits), kLenNumLowBits, rd); + if(RangeDecoderBitDecode(p + LenChoice2, rd) == 0) + return kLenNumLowSymbols + RangeDecoderBitTreeDecode(p + LenMid + + (posState << kLenNumMidBits), kLenNumMidBits, rd); + return kLenNumLowSymbols + kLenNumMidSymbols + + RangeDecoderBitTreeDecode(p + LenHigh, kLenNumHighBits, rd); +} + +#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 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) + +#if Literal != LZMA_BASE_SIZE +StopCompilingDueBUG +#endif + +int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size) +{ + unsigned char prop0; + if (size < LZMA_PROPERTIES_SIZE) + return LZMA_RESULT_DATA_ERROR; + prop0 = propsData[0]; + if (prop0 >= (9 * 5 * 5)) + return LZMA_RESULT_DATA_ERROR; + { + for (propsRes->pb = 0; prop0 >= (9 * 5); propsRes->pb++, prop0 -= (9 * 5)); + for (propsRes->lp = 0; prop0 >= 9; propsRes->lp++, prop0 -= 9); + propsRes->lc = prop0; + /* + unsigned char remainder = (unsigned char)(prop0 / 9); + propsRes->lc = prop0 % 9; + propsRes->pb = remainder / 5; + propsRes->lp = remainder % 5; + */ + } + + #ifdef _LZMA_OUT_READ + { + int i; + propsRes->DictionarySize = 0; + for (i = 0; i < 4; i++) + propsRes->DictionarySize += (UInt32)(propsData[1 + i]) << (i * 8); + if (propsRes->DictionarySize == 0) + propsRes->DictionarySize = 1; + } + #endif + return LZMA_RESULT_OK; +} + +#define kLzmaStreamWasFinishedId (-1) + +int LzmaDecode(CLzmaDecoderState *vs, + #ifdef _LZMA_IN_CB + ILzmaInCallback *InCallback, + #else + const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed, + #endif + unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed) +{ + CProb *p = vs->Probs; + SizeT nowPos = 0; + Byte previousByte = 0; + UInt32 posStateMask = (1 << (vs->Properties.pb)) - 1; + UInt32 literalPosMask = (1 << (vs->Properties.lp)) - 1; + int lc = vs->Properties.lc; + CRangeDecoder rd; + + #ifdef _LZMA_OUT_READ + + int state = vs->State; + UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3]; + int len = vs->RemainLen; + UInt32 globalPos = vs->GlobalPos; + UInt32 distanceLimit = vs->DistanceLimit; + + Byte *dictionary = vs->Dictionary; + UInt32 dictionarySize = vs->Properties.DictionarySize; + UInt32 dictionaryPos = vs->DictionaryPos; + + Byte tempDictionary[4]; + + rd.Range = vs->Range; + rd.Code = vs->Code; + #ifdef _LZMA_IN_CB + rd.InCallback = InCallback; + rd.Buffer = vs->Buffer; + rd.BufferLim = vs->BufferLim; + #else + rd.Buffer = inStream; + rd.BufferLim = inStream + inSize; + #endif + + #ifndef _LZMA_IN_CB + *inSizeProcessed = 0; + #endif + *outSizeProcessed = 0; + if (len == kLzmaStreamWasFinishedId) + return LZMA_RESULT_OK; + + if (dictionarySize == 0) + { + dictionary = tempDictionary; + dictionarySize = 1; + tempDictionary[0] = vs->TempDictionary[0]; + } + + if (len == kLzmaNeedInitId) + { + { + UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp)); + UInt32 i; + for (i = 0; i < numProbs; i++) + p[i] = kBitModelTotal >> 1; + rep0 = rep1 = rep2 = rep3 = 1; + state = 0; + globalPos = 0; + distanceLimit = 0; + dictionaryPos = 0; + dictionary[dictionarySize - 1] = 0; + RangeDecoderInit(&rd + #ifndef _LZMA_IN_CB + , inStream, inSize + #endif + ); + #ifdef _LZMA_IN_CB + if (rd.Result != LZMA_RESULT_OK) + return rd.Result; + #endif + if (rd.ExtraBytes != 0) + return LZMA_RESULT_DATA_ERROR; + } + len = 0; + } + while(len != 0 && nowPos < outSize) + { + UInt32 pos = dictionaryPos - rep0; + if (pos >= dictionarySize) + pos += dictionarySize; + outStream[nowPos++] = dictionary[dictionaryPos] = dictionary[pos]; + if (++dictionaryPos == dictionarySize) + dictionaryPos = 0; + len--; + } + if (dictionaryPos == 0) + previousByte = dictionary[dictionarySize - 1]; + else + previousByte = dictionary[dictionaryPos - 1]; + + #ifdef _LZMA_IN_CB + rd.Result = LZMA_RESULT_OK; + #endif + rd.ExtraBytes = 0; + + #else /* if !_LZMA_OUT_READ */ + + int state = 0; + UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1; + int len = 0; + + #ifndef _LZMA_IN_CB + *inSizeProcessed = 0; + #endif + *outSizeProcessed = 0; + + { + UInt32 i; + UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp)); + for (i = 0; i < numProbs; i++) + p[i] = kBitModelTotal >> 1; + } + + #ifdef _LZMA_IN_CB + rd.InCallback = InCallback; + #endif + RangeDecoderInit(&rd + #ifndef _LZMA_IN_CB + , inStream, inSize + #endif + ); + + #ifdef _LZMA_IN_CB + if (rd.Result != LZMA_RESULT_OK) + return rd.Result; + #endif + if (rd.ExtraBytes != 0) + return LZMA_RESULT_DATA_ERROR; + + #endif /* _LZMA_OUT_READ */ + + + while(nowPos < outSize) + { + int posState = (int)( + (nowPos + #ifdef _LZMA_OUT_READ + + globalPos + #endif + ) + & posStateMask); + #ifdef _LZMA_IN_CB + if (rd.Result != LZMA_RESULT_OK) + return rd.Result; + #endif + if (rd.ExtraBytes != 0) + return LZMA_RESULT_DATA_ERROR; + if (RangeDecoderBitDecode(p + IsMatch + (state << kNumPosBitsMax) + posState, &rd) == 0) + { + CProb *probs = p + Literal + (LZMA_LIT_SIZE * + ((( + (nowPos + #ifdef _LZMA_OUT_READ + + globalPos + #endif + ) + & literalPosMask) << lc) + (previousByte >> (8 - lc)))); + + if (state >= kNumLitStates) + { + Byte matchByte; + #ifdef _LZMA_OUT_READ + UInt32 pos = dictionaryPos - rep0; + if (pos >= dictionarySize) + pos += dictionarySize; + matchByte = dictionary[pos]; + #else + matchByte = outStream[nowPos - rep0]; + #endif + previousByte = LzmaLiteralDecodeMatch(probs, &rd, matchByte); + } + else + previousByte = LzmaLiteralDecode(probs, &rd); + outStream[nowPos++] = previousByte; + #ifdef _LZMA_OUT_READ + if (distanceLimit < dictionarySize) + distanceLimit++; + + dictionary[dictionaryPos] = previousByte; + if (++dictionaryPos == dictionarySize) + dictionaryPos = 0; + #endif + if (state < 4) state = 0; + else if (state < 10) state -= 3; + else state -= 6; + } + else + { + if (RangeDecoderBitDecode(p + IsRep + state, &rd) == 1) + { + if (RangeDecoderBitDecode(p + IsRepG0 + state, &rd) == 0) + { + if (RangeDecoderBitDecode(p + IsRep0Long + (state << kNumPosBitsMax) + posState, &rd) == 0) + { + #ifdef _LZMA_OUT_READ + UInt32 pos; + #endif + + #ifdef _LZMA_OUT_READ + if (distanceLimit == 0) + #else + if (nowPos == 0) + #endif + return LZMA_RESULT_DATA_ERROR; + + state = state < 7 ? 9 : 11; + #ifdef _LZMA_OUT_READ + pos = dictionaryPos - rep0; + if (pos >= dictionarySize) + pos += dictionarySize; + previousByte = dictionary[pos]; + dictionary[dictionaryPos] = previousByte; + if (++dictionaryPos == dictionarySize) + dictionaryPos = 0; + #else + previousByte = outStream[nowPos - rep0]; + #endif + outStream[nowPos++] = previousByte; + + #ifdef _LZMA_OUT_READ + if (distanceLimit < dictionarySize) + distanceLimit++; + #endif + continue; + } + } + else + { + UInt32 distance; + if(RangeDecoderBitDecode(p + IsRepG1 + state, &rd) == 0) + distance = rep1; + else + { + if(RangeDecoderBitDecode(p + IsRepG2 + state, &rd) == 0) + distance = rep2; + else + { + distance = rep3; + rep3 = rep2; + } + rep2 = rep1; + } + rep1 = rep0; + rep0 = distance; + } + len = LzmaLenDecode(p + RepLenCoder, &rd, posState); + state = state < 7 ? 8 : 11; + } + else + { + int posSlot; + rep3 = rep2; + rep2 = rep1; + rep1 = rep0; + state = state < 7 ? 7 : 10; + len = LzmaLenDecode(p + LenCoder, &rd, posState); + posSlot = RangeDecoderBitTreeDecode(p + PosSlot + + ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) << + kNumPosSlotBits), kNumPosSlotBits, &rd); + if (posSlot >= kStartPosModelIndex) + { + int numDirectBits = ((posSlot >> 1) - 1); + rep0 = ((2 | ((UInt32)posSlot & 1)) << numDirectBits); + if (posSlot < kEndPosModelIndex) + { + rep0 += RangeDecoderReverseBitTreeDecode( + p + SpecPos + rep0 - posSlot - 1, numDirectBits, &rd); + } + else + { + rep0 += RangeDecoderDecodeDirectBits(&rd, + numDirectBits - kNumAlignBits) << kNumAlignBits; + rep0 += RangeDecoderReverseBitTreeDecode(p + Align, kNumAlignBits, &rd); + } + } + else + rep0 = posSlot; + if (++rep0 == (UInt32)(0)) + { + /* it's for stream version */ + len = kLzmaStreamWasFinishedId; + break; + } + } + + len += kMatchMinLen; + #ifdef _LZMA_OUT_READ + if (rep0 > distanceLimit) + #else + if (rep0 > nowPos) + #endif + return LZMA_RESULT_DATA_ERROR; + + #ifdef _LZMA_OUT_READ + if (dictionarySize - distanceLimit > (UInt32)len) + distanceLimit += len; + else + distanceLimit = dictionarySize; + #endif + + do + { + #ifdef _LZMA_OUT_READ + UInt32 pos = dictionaryPos - rep0; + if (pos >= dictionarySize) + pos += dictionarySize; + previousByte = dictionary[pos]; + dictionary[dictionaryPos] = previousByte; + if (++dictionaryPos == dictionarySize) + dictionaryPos = 0; + #else + previousByte = outStream[nowPos - rep0]; + #endif + len--; + outStream[nowPos++] = previousByte; + } + while(len != 0 && nowPos < outSize); + } + } + + + #ifdef _LZMA_OUT_READ + vs->Range = rd.Range; + vs->Code = rd.Code; + vs->DictionaryPos = dictionaryPos; + vs->GlobalPos = globalPos + (UInt32)nowPos; + vs->DistanceLimit = distanceLimit; + vs->Reps[0] = rep0; + vs->Reps[1] = rep1; + vs->Reps[2] = rep2; + vs->Reps[3] = rep3; + vs->State = state; + vs->RemainLen = len; + vs->TempDictionary[0] = tempDictionary[0]; + #endif + + #ifdef _LZMA_IN_CB + vs->Buffer = rd.Buffer; + vs->BufferLim = rd.BufferLim; + #else + *inSizeProcessed = (SizeT)(rd.Buffer - inStream); + #endif + *outSizeProcessed = nowPos; + return LZMA_RESULT_OK; +} -- cgit v1.2.3-54-g00ecf