diff options
Diffstat (limited to 'CPP/7zip/Compress/Lzx.h')
-rw-r--r-- | CPP/7zip/Compress/Lzx.h | 68 |
1 files changed, 32 insertions, 36 deletions
diff --git a/CPP/7zip/Compress/Lzx.h b/CPP/7zip/Compress/Lzx.h index 09ab7f07..29ca4cac 100644 --- a/CPP/7zip/Compress/Lzx.h +++ b/CPP/7zip/Compress/Lzx.h @@ -6,55 +6,51 @@ namespace NCompress { namespace NLzx { +const unsigned kBlockType_NumBits = 3; +const unsigned kBlockType_Verbatim = 1; +const unsigned kBlockType_Aligned = 2; +const unsigned kBlockType_Uncompressed = 3; + const unsigned kNumHuffmanBits = 16; -const UInt32 kNumRepDistances = 3; +const unsigned kNumReps = 3; -const UInt32 kNumLenSlots = 8; -const UInt32 kMatchMinLen = 2; -const UInt32 kNumLenSymbols = 249; -const UInt32 kMatchMaxLen = kMatchMinLen + (kNumLenSlots - 1) + kNumLenSymbols - 1; +const unsigned kNumLenSlots = 8; +const unsigned kMatchMinLen = 2; +const unsigned kNumLenSymbols = 249; +const unsigned kMatchMaxLen = kMatchMinLen + (kNumLenSlots - 1) + kNumLenSymbols - 1; +const unsigned kNumAlignLevelBits = 3; const unsigned kNumAlignBits = 3; -const UInt32 kAlignTableSize = 1 << kNumAlignBits; - -const UInt32 kNumPosSlots = 50; -const UInt32 kNumPosLenSlots = kNumPosSlots * kNumLenSlots; - -const UInt32 kMainTableSize = 256 + kNumPosLenSlots; -const UInt32 kLevelTableSize = 20; -const UInt32 kMaxTableSize = kMainTableSize; - -const unsigned kNumBlockTypeBits = 3; -const unsigned kBlockTypeVerbatim = 1; -const unsigned kBlockTypeAligned = 2; -const unsigned kBlockTypeUncompressed = 3; +const unsigned kAlignTableSize = 1 << kNumAlignBits; -const unsigned kUncompressedBlockSizeNumBits = 24; +const unsigned kNumPosSlots = 50; +const unsigned kNumPosLenSlots = kNumPosSlots * kNumLenSlots; -const unsigned kNumBitsForPreTreeLevel = 4; +const unsigned kMainTableSize = 256 + kNumPosLenSlots; +const unsigned kLevelTableSize = 20; +const unsigned kMaxTableSize = kMainTableSize; -const unsigned kLevelSymbolZeros = 17; -const unsigned kLevelSymbolZerosBig = 18; -const unsigned kLevelSymbolSame = 19; +const unsigned kNumLevelBits = 4; -const unsigned kLevelSymbolZerosStartValue = 4; -const unsigned kLevelSymbolZerosNumBits = 4; +const unsigned kLevelSym_Zero1 = 17; +const unsigned kLevelSym_Zero2 = 18; +const unsigned kLevelSym_Same = 19; -const unsigned kLevelSymbolZerosBigStartValue = kLevelSymbolZerosStartValue + - (1 << kLevelSymbolZerosNumBits); -const unsigned kLevelSymbolZerosBigNumBits = 5; +const unsigned kLevelSym_Zero1_Start = 4; +const unsigned kLevelSym_Zero1_NumBits = 4; -const unsigned kLevelSymbolSameNumBits = 1; -const unsigned kLevelSymbolSameStartValue = 4; +const unsigned kLevelSym_Zero2_Start = kLevelSym_Zero1_Start + (1 << kLevelSym_Zero1_NumBits); +const unsigned kLevelSym_Zero2_NumBits = 5; -const unsigned kNumBitsForAlignLevel = 3; - -const unsigned kNumDictionaryBitsMin = 15; -const unsigned kNumDictionaryBitsMax = 21; -const UInt32 kDictionarySizeMax = (1 << kNumDictionaryBitsMax); +const unsigned kLevelSym_Same_NumBits = 1; +const unsigned kLevelSym_Same_Start = 4; + +const unsigned kNumDictBits_Min = 15; +const unsigned kNumDictBits_Max = 21; +const UInt32 kDictSize_Max = (UInt32)1 << kNumDictBits_Max; const unsigned kNumLinearPosSlotBits = 17; -const UInt32 kNumPowerPosSlots = 0x26; +const unsigned kNumPowerPosSlots = 38; }} |