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love2d.megasource
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libs
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physfs-2.0.3
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lzma
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Java
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SevenZip
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Compression
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LZMA
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Base.java

Base.java 2.5 KB
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  1. // Base.java
    2. 

  2. 

  3. package SevenZip.Compression.LZMA;
    4. 

  4. 

  5. public class Base
    6. 

  6. {
    7. 

  7. 	public static final int kNumRepDistances = 4;
    8. 

  8. 	public static final int kNumStates = 12;
    9. 

  9. 	
    10. 

  10. 	public static final int StateInit()
    11. 

  11. 	{
    12. 

  12. 		return 0;
    13. 

  13. 	}
    14. 

  14. 	
    15. 

  15. 	public static final int StateUpdateChar(int index)
    16. 

  16. 	{
    17. 

  17. 		if (index < 4) 
    18. 

  18. 			return 0;
    19. 

  19. 		if (index < 10) 
    20. 

  20. 			return index - 3;
    21. 

  21. 		return index - 6;
    22. 

  22. 	}
    23. 

  23. 	
    24. 

  24. 	public static final int StateUpdateMatch(int index)
    25. 

  25. 	{
    26. 

  26. 		return (index < 7 ? 7 : 10); 
    27. 

  27. 	}
    28. 

  28. 

  29. 	public static final int StateUpdateRep(int index)
    30. 

  30. 	{ 
    31. 

  31. 		return (index < 7 ? 8 : 11); 
    32. 

  32. 	}
    33. 

  33. 	
    34. 

  34. 	public static final int StateUpdateShortRep(int index)
    35. 

  35. 	{ 
    36. 

  36. 		return (index < 7 ? 9 : 11); 
    37. 

  37. 	}
    38. 

  38. 

  39. 	public static final boolean StateIsCharState(int index)
    40. 

  40. 	{ 
    41. 

  41. 		return index < 7; 
    42. 

  42. 	}
    43. 

  43. 	
    44. 

  44. 	public static final int kNumPosSlotBits = 6;
    45. 

  45. 	public static final int kDicLogSizeMin = 0;
    46. 

  46. 	// public static final int kDicLogSizeMax = 28;
    47. 

  47. 	// public static final int kDistTableSizeMax = kDicLogSizeMax * 2;
    48. 

  48. 	
    49. 

  49. 	public static final int kNumLenToPosStatesBits = 2; // it's for speed optimization
    50. 

  50. 	public static final int kNumLenToPosStates = 1 << kNumLenToPosStatesBits;
    51. 

  51. 	
    52. 

  52. 	public static final int kMatchMinLen = 2;
    53. 

  53. 	
    54. 

  54. 	public static final int GetLenToPosState(int len)
    55. 

  55. 	{
    56. 

  56. 		len -= kMatchMinLen;
    57. 

  57. 		if (len < kNumLenToPosStates)
    58. 

  58. 			return len;
    59. 

  59. 		return (int)(kNumLenToPosStates - 1);
    60. 

  60. 	}
    61. 

  61. 	
    62. 

  62. 	public static final int kNumAlignBits = 4;
    63. 

  63. 	public static final int kAlignTableSize = 1 << kNumAlignBits;
    64. 

  64. 	public static final int kAlignMask = (kAlignTableSize - 1);
    65. 

  65. 	
    66. 

  66. 	public static final int kStartPosModelIndex = 4;
    67. 

  67. 	public static final int kEndPosModelIndex = 14;
    68. 

  68. 	public static final int kNumPosModels = kEndPosModelIndex - kStartPosModelIndex;
    69. 

  69. 	
    70. 

  70. 	public static final  int kNumFullDistances = 1 << (kEndPosModelIndex / 2);
    71. 

  71. 	
    72. 

  72. 	public static final  int kNumLitPosStatesBitsEncodingMax = 4;
    73. 

  73. 	public static final  int kNumLitContextBitsMax = 8;
    74. 

  74. 	
    75. 

  75. 	public static final  int kNumPosStatesBitsMax = 4;
    76. 

  76. 	public static final  int kNumPosStatesMax = (1 << kNumPosStatesBitsMax);
    77. 

  77. 	public static final  int kNumPosStatesBitsEncodingMax = 4;
    78. 

  78. 	public static final  int kNumPosStatesEncodingMax = (1 << kNumPosStatesBitsEncodingMax);
    79. 

  79. 	
    80. 

  80. 	public static final  int kNumLowLenBits = 3;
    81. 

  81. 	public static final  int kNumMidLenBits = 3;
    82. 

  82. 	public static final  int kNumHighLenBits = 8;
    83. 

  83. 	public static final  int kNumLowLenSymbols = 1 << kNumLowLenBits;
    84. 

  84. 	public static final  int kNumMidLenSymbols = 1 << kNumMidLenBits;
    85. 

  85. 	public static final  int kNumLenSymbols = kNumLowLenSymbols + kNumMidLenSymbols +
    86. 

  86. 			(1 << kNumHighLenBits);
    87. 

  87. 	public static final  int kMatchMaxLen = kMatchMinLen + kNumLenSymbols - 1;
    88. 

  88. }
    89.