private void Create()
{
if (_matchFinder == null)
{
LZ.BinTree bt = new LZ.BinTree();
int numHashBytes = 4;
if (_matchFinderType == EMatchFinderType.BT2)
numHashBytes = 2;
bt.SetType(numHashBytes);
_matchFinder = bt;
}
_literalEncoder.Create(_numLiteralPosStateBits, _numLiteralContextBits);
if (_dictionarySize == _dictionarySizePrev && _numFastBytesPrev == _numFastBytes)
return;
_matchFinder.Create(_dictionarySize, kNumOpts, _numFastBytes, Base.kMatchMaxLen + 1 + kNumOpts);
_dictionarySizePrev = _dictionarySize;
_numFastBytesPrev = _numFastBytes;
}
public void SetCoderProperties(CoderPropID[] propIDs, object[] properties)
{
for (UInt32 i = 0; i < properties.Length; i++)
{
object prop = properties[i];
switch (propIDs[i])
{
case CoderPropID.NumFastBytes:
{
if (!(prop is Int32))
throw new InvalidParamException();
Int32 numFastBytes = (Int32) prop;
if (numFastBytes < 5 || numFastBytes > Base.kMatchMaxLen)
throw new InvalidParamException();
_numFastBytes = (UInt32) numFastBytes;
break;
}
case CoderPropID.Algorithm:
{
/*
if (!(prop is Int32))
throw new InvalidParamException();
Int32 maximize = (Int32)prop;
_fastMode = (maximize == 0);
_maxMode = (maximize >= 2);
*/
break;
}
case CoderPropID.MatchFinder:
{
if (!(prop is String))
throw new InvalidParamException();
EMatchFinderType matchFinderIndexPrev = _matchFinderType;
int m = FindMatchFinder(((string) prop).ToUpper());
if (m < 0)
throw new InvalidParamException();
_matchFinderType = (EMatchFinderType) m;
if (_matchFinder != null && matchFinderIndexPrev != _matchFinderType)
{
_dictionarySizePrev = 0xFFFFFFFF;
_matchFinder = null;
}
break;
}
case CoderPropID.DictionarySize:
{
const int kDicLogSizeMaxCompress = 30;
if (!(prop is Int32))
throw new InvalidParamException();
;
Int32 dictionarySize = (Int32) prop;
if (dictionarySize < (UInt32) (1 << Base.kDicLogSizeMin) ||
dictionarySize > (UInt32) (1 << kDicLogSizeMaxCompress))
throw new InvalidParamException();
_dictionarySize = (UInt32) dictionarySize;
int dicLogSize;
for (dicLogSize = 0; dicLogSize < (UInt32) kDicLogSizeMaxCompress; dicLogSize++)
if (dictionarySize <= ((UInt32) (1) << dicLogSize))
break;
_distTableSize = (UInt32) dicLogSize*2;
break;
}
case CoderPropID.PosStateBits:
{
if (!(prop is Int32))
throw new InvalidParamException();
Int32 v = (Int32) prop;
if (v < 0 || v > (UInt32) Base.kNumPosStatesBitsEncodingMax)
throw new InvalidParamException();
_posStateBits = (int) v;
_posStateMask = (((UInt32) 1) << (int) _posStateBits) - 1;
break;
}
case CoderPropID.LitPosBits:
{
if (!(prop is Int32))
throw new InvalidParamException();
Int32 v = (Int32) prop;
if (v < 0 || v > (UInt32) Base.kNumLitPosStatesBitsEncodingMax)
throw new InvalidParamException();
_numLiteralPosStateBits = (int) v;
break;
}
case CoderPropID.LitContextBits:
{
if (!(prop is Int32))
throw new InvalidParamException();
Int32 v = (Int32) prop;
if (v < 0 || v > (UInt32) Base.kNumLitContextBitsMax)
throw new InvalidParamException();
;
_numLiteralContextBits = (int) v;
break;
}
case CoderPropID.EndMarker:
{
if (!(prop is Boolean))
throw new InvalidParamException();
SetWriteEndMarkerMode((Boolean) prop);
break;
}
default:
throw new InvalidParamException();
}
}
}
private void Create()
{
if (this._matchFinder == null)
{
BinTree tree = new BinTree();
int numHashBytes = 4;
if (this._matchFinderType == EMatchFinderType.BT2)
{
numHashBytes = 2;
}
tree.SetType(numHashBytes);
this._matchFinder = tree;
}
this._literalEncoder.Create(this._numLiteralPosStateBits, this._numLiteralContextBits);
if ((this._dictionarySize != this._dictionarySizePrev) || (this._numFastBytesPrev != this._numFastBytes))
{
this._matchFinder.Create(this._dictionarySize, 0x1000, this._numFastBytes, 0x1112);
this._dictionarySizePrev = this._dictionarySize;
this._numFastBytesPrev = this._numFastBytes;
}
}
public Encoder()
{
int num;
this._state = new Base.State();
this._repDistances = new uint[4];
this._optimum = new Optimal[0x1000];
this._matchFinder = null;
this._rangeEncoder = new SharpCompress.Compressor.LZMA.RangeCoder.Encoder();
this._isMatch = new BitEncoder[0xc0];
this._isRep = new BitEncoder[12];
this._isRepG0 = new BitEncoder[12];
this._isRepG1 = new BitEncoder[12];
this._isRepG2 = new BitEncoder[12];
this._isRep0Long = new BitEncoder[0xc0];
this._posSlotEncoder = new BitTreeEncoder[4];
this._posEncoders = new BitEncoder[0x72];
this._posAlignEncoder = new BitTreeEncoder(4);
this._lenEncoder = new LenPriceTableEncoder();
this._repMatchLenEncoder = new LenPriceTableEncoder();
this._literalEncoder = new LiteralEncoder();
this._matchDistances = new uint[0x224];
this._numFastBytes = 0x20;
this._posSlotPrices = new uint[0x100];
this._distancesPrices = new uint[0x200];
this._alignPrices = new uint[0x10];
this._distTableSize = 0x2c;
this._posStateBits = 2;
this._posStateMask = 3;
this._numLiteralPosStateBits = 0;
this._numLiteralContextBits = 3;
this._dictionarySize = 0x400000;
this._dictionarySizePrev = uint.MaxValue;
this._numFastBytesPrev = uint.MaxValue;
this._matchFinderType = EMatchFinderType.BT4;
this._writeEndMark = false;
this.reps = new uint[4];
this.repLens = new uint[4];
this.properties = new byte[5];
this.tempPrices = new uint[0x80];
this._trainSize = 0;
for (num = 0; num < 0x1000L; num++)
{
this._optimum[num] = new Optimal();
}
for (num = 0; num < 4L; num++)
{
this._posSlotEncoder[num] = new BitTreeEncoder(6);
}
}
public void SetCoderProperties(CoderPropID[] propIDs, object[] properties)
{
for (uint i = 0; i < properties.Length; i++)
{
EMatchFinderType type;
int num4;
int num6;
object obj2 = properties[i];
switch (propIDs[i])
{
case CoderPropID.DictionarySize:
if (!(obj2 is int))
{
throw new InvalidParamException();
}
goto Label_013B;
case CoderPropID.PosStateBits:
if (!(obj2 is int))
{
throw new InvalidParamException();
}
goto Label_01C3;
case CoderPropID.LitContextBits:
if (!(obj2 is int))
{
throw new InvalidParamException();
}
goto Label_0267;
case CoderPropID.LitPosBits:
if (!(obj2 is int))
{
throw new InvalidParamException();
}
goto Label_0220;
case CoderPropID.NumFastBytes:
if (!(obj2 is int))
{
throw new InvalidParamException();
}
break;
case CoderPropID.MatchFinder:
if (!(obj2 is string))
{
throw new InvalidParamException();
}
goto Label_00C0;
case CoderPropID.Algorithm:
{
continue;
}
case CoderPropID.EndMarker:
if (!(obj2 is bool))
{
throw new InvalidParamException();
}
goto Label_02AE;
default:
throw new InvalidParamException();
}
int num2 = (int) obj2;
if ((num2 < 5) || (num2 > 0x111L))
{
throw new InvalidParamException();
}
this._numFastBytes = (uint) num2;
continue;
Label_00C0:
type = this._matchFinderType;
int num3 = FindMatchFinder(((string) obj2).ToUpper());
if (num3 < 0)
{
throw new InvalidParamException();
}
this._matchFinderType = (EMatchFinderType) num3;
if ((this._matchFinder != null) && (type != this._matchFinderType))
{
this._dictionarySizePrev = uint.MaxValue;
this._matchFinder = null;
}
continue;
Label_013B:
num4 = (int) obj2;
if ((num4 < 1L) || (num4 > 0x40000000L))
{
throw new InvalidParamException();
}
this._dictionarySize = (uint) num4;
int num5 = 0;
while (num5 < 30L)
{
if (num4 <= (((uint) 1) << num5))
{
break;
}
num5++;
}
this._distTableSize = (uint) (num5 * 2);
continue;
Label_01C3:
num6 = (int) obj2;
if ((num6 < 0) || (num6 > 4L))
{
throw new InvalidParamException();
}
this._posStateBits = num6;
this._posStateMask = (uint) ((((int) 1) << this._posStateBits) - 1);
continue;
Label_0220:
num6 = (int) obj2;
if ((num6 < 0) || (num6 > 4L))
{
throw new InvalidParamException();
}
this._numLiteralPosStateBits = num6;
continue;
Label_0267:
num6 = (int) obj2;
if ((num6 < 0) || (num6 > 8L))
{
throw new InvalidParamException();
}
this._numLiteralContextBits = num6;
continue;
Label_02AE:
this.SetWriteEndMarkerMode((bool) obj2);
}
}