4.44 beta

CPP/7zip/Compress/Lzx/Lzx.h

@@ -0,0 +1,61 @@
+// Lzx.h
+
+#ifndef __COMPRESS_LZX_H
+#define __COMPRESS_LZX_H
+
+namespace NCompress {
+namespace NLzx {
+
+const int kNumHuffmanBits = 16;
+const UInt32 kNumRepDistances = 3;
+
+const UInt32 kNumLenSlots = 8;
+const UInt32 kMatchMinLen = 2;
+const UInt32 kNumLenSymbols = 249;
+const UInt32 kMatchMaxLen = kMatchMinLen + (kNumLenSlots - 1) + kNumLenSymbols - 1;
+
+const int 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 int kNumBlockTypeBits = 3;
+const int kBlockTypeVerbatim = 1;
+const int kBlockTypeAligned = 2;
+const int kBlockTypeUncompressed = 3;
+
+const int kUncompressedBlockSizeNumBits = 24;
+
+const int kNumBitsForPreTreeLevel = 4;
+
+const int kLevelSymbolZeros = 17;
+const int kLevelSymbolZerosBig = 18;
+const int kLevelSymbolSame = 19;
+
+const int kLevelSymbolZerosStartValue = 4;
+const int kLevelSymbolZerosNumBits = 4;
+
+const int kLevelSymbolZerosBigStartValue = kLevelSymbolZerosStartValue + 
+    (1 << kLevelSymbolZerosNumBits);
+const int kLevelSymbolZerosBigNumBits = 5;
+
+const int kLevelSymbolSameNumBits = 1;
+const int kLevelSymbolSameStartValue = 4;
+
+const int kNumBitsForAlignLevel = 3;
+  
+const int kNumDictionaryBitsMin = 15;
+const int kNumDictionaryBitsMax = 21;
+const UInt32 kDictionarySizeMax = (1 << kNumDictionaryBitsMax);
+
+const int kNumLinearPosSlotBits = 17;
+const UInt32 kNumPowerPosSlots = 0x26;
+
+}}
+
+#endif