UInt32 GetRepPrice(UInt32 repIndex, UInt32 len, Base.State state, UInt32 posState)
{
UInt32 price = _repMatchLenEncoder.GetPrice(len - Base.kMatchMinLen, posState);
return price + GetPureRepPrice(repIndex, state, posState);
}
UInt32 GetPureRepPrice(UInt32 repIndex, Base.State state, UInt32 posState)
{
UInt32 price;
if (repIndex == 0)
{
price = _isRepG0[state.Index].GetPrice0();
price += _isRep0Long[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice1();
}
else
{
price = _isRepG0[state.Index].GetPrice1();
if (repIndex == 1)
price += _isRepG1[state.Index].GetPrice0();
else
{
price += _isRepG1[state.Index].GetPrice1();
price += _isRepG2[state.Index].GetPrice(repIndex - 2);
}
}
return price;
}
UInt32 GetRepLen1Price(Base.State state, UInt32 posState)
{
return _isRepG0[state.Index].GetPrice0() +
_isRep0Long[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice0();
}
public void Code(
Stream inStream,
Stream outStream,
long inSize,
long outSize,
ICodeProgress progress)
{
this.Init(inStream, outStream);
Base.State state = new Base.State();
state.Init();
uint distance = 0;
uint num1 = 0;
uint num2 = 0;
uint num3 = 0;
ulong num4 = 0;
ulong num5 = (ulong)outSize;
if (num4 < num5)
{
if (this.m_IsMatchDecoders[(int)state.Index << 4].Decode(this.m_RangeDecoder) != 0U)
{
throw new DataErrorException();
}
state.UpdateChar();
this.m_OutWindow.PutByte(this.m_LiteralDecoder.DecodeNormal(this.m_RangeDecoder, 0U, (byte)0));
++num4;
}
while (num4 < num5)
{
uint posState = (uint)num4 & this.m_PosStateMask;
if (this.m_IsMatchDecoders[((int)state.Index << 4) + (int)posState].Decode(this.m_RangeDecoder) == 0U)
{
byte prevByte = this.m_OutWindow.GetByte(0U);
this.m_OutWindow.PutByte(state.IsCharState() ? this.m_LiteralDecoder.DecodeNormal(this.m_RangeDecoder, (uint)num4, prevByte) : this.m_LiteralDecoder.DecodeWithMatchByte(this.m_RangeDecoder, (uint)num4, prevByte, this.m_OutWindow.GetByte(distance)));
state.UpdateChar();
++num4;
}
else
{
uint len;
if (this.m_IsRepDecoders[(int)state.Index].Decode(this.m_RangeDecoder) == 1U)
{
if (this.m_IsRepG0Decoders[(int)state.Index].Decode(this.m_RangeDecoder) == 0U)
{
if (this.m_IsRep0LongDecoders[((int)state.Index << 4) + (int)posState].Decode(this.m_RangeDecoder) == 0U)
{
state.UpdateShortRep();
this.m_OutWindow.PutByte(this.m_OutWindow.GetByte(distance));
++num4;
continue;
}
}
else
{
uint num6;
if (this.m_IsRepG1Decoders[(int)state.Index].Decode(this.m_RangeDecoder) == 0U)
{
num6 = num1;
}
else
{
if (this.m_IsRepG2Decoders[(int)state.Index].Decode(this.m_RangeDecoder) == 0U)
{
num6 = num2;
}
else
{
num6 = num3;
num3 = num2;
}
num2 = num1;
}
num1 = distance;
distance = num6;
}
len = this.m_RepLenDecoder.Decode(this.m_RangeDecoder, posState) + 2U;
state.UpdateRep();
}
else
{
num3 = num2;
num2 = num1;
num1 = distance;
len = 2U + this.m_LenDecoder.Decode(this.m_RangeDecoder, posState);
state.UpdateMatch();
uint num6 = this.m_PosSlotDecoder[(int)Base.GetLenToPosState(len)].Decode(this.m_RangeDecoder);
if (num6 >= 4U)
{
int NumBitLevels = (int)(num6 >> 1) - 1;
uint num7 = (uint)((2 | (int)num6 & 1) << NumBitLevels);
distance = num6 >= 14U ? num7 + (this.m_RangeDecoder.DecodeDirectBits(NumBitLevels - 4) << 4) + this.m_PosAlignDecoder.ReverseDecode(this.m_RangeDecoder) : num7 + BitTreeDecoder.ReverseDecode(this.m_PosDecoders, (uint)((int)num7 - (int)num6 - 1), this.m_RangeDecoder, NumBitLevels);
}
else
{
distance = num6;
}
}
if ((ulong)distance >= (ulong)this.m_OutWindow.TrainSize + num4 || distance >= this.m_DictionarySizeCheck)
{
if (distance != uint.MaxValue)
{
throw new DataErrorException();
}
break;
}
this.m_OutWindow.CopyBlock(distance, len);
num4 += (ulong)len;
}
}
this.m_OutWindow.Flush();
this.m_OutWindow.ReleaseStream();
this.m_RangeDecoder.ReleaseStream();
}
public void Code(Stream inStream, Stream outStream,
Int64 inSize, Int64 outSize, ICodeProgress progress)
{
Init(inStream, outStream);
var state = new Base.State();
state.Init();
uint rep0 = 0, rep1 = 0, rep2 = 0, rep3 = 0;
UInt64 nowPos64 = 0;
var outSize64 = (UInt64)outSize;
if (nowPos64 < outSize64)
{
if (m_IsMatchDecoders[state.Index << Base.kNumPosStatesBitsMax].Decode(m_RangeDecoder) != 0)
{
throw new DataErrorException();
}
state.UpdateChar();
byte b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, 0, 0);
m_OutWindow.PutByte(b);
nowPos64++;
}
while (nowPos64 < outSize64)
{
// UInt64 next = Math.Min(nowPos64 + (1 << 18), outSize64);
// while(nowPos64 < next)
{
uint posState = (uint)nowPos64 & m_PosStateMask;
if (m_IsMatchDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) == 0)
{
byte b;
byte prevByte = m_OutWindow.GetByte(0);
if (!state.IsCharState())
{
b = m_LiteralDecoder.DecodeWithMatchByte(m_RangeDecoder,
(uint)nowPos64, prevByte, m_OutWindow.GetByte(rep0));
}
else
{
b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, (uint)nowPos64, prevByte);
}
m_OutWindow.PutByte(b);
state.UpdateChar();
nowPos64++;
}
else
{
uint len;
if (m_IsRepDecoders[state.Index].Decode(m_RangeDecoder) == 1)
{
if (m_IsRepG0Decoders[state.Index].Decode(m_RangeDecoder) == 0)
{
if (m_IsRep0LongDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) == 0)
{
state.UpdateShortRep();
m_OutWindow.PutByte(m_OutWindow.GetByte(rep0));
nowPos64++;
continue;
}
}
else
{
UInt32 distance;
if (m_IsRepG1Decoders[state.Index].Decode(m_RangeDecoder) == 0)
{
distance = rep1;
}
else
{
if (m_IsRepG2Decoders[state.Index].Decode(m_RangeDecoder) == 0)
{
distance = rep2;
}
else
{
distance = rep3;
rep3 = rep2;
}
rep2 = rep1;
}
rep1 = rep0;
rep0 = distance;
}
len = m_RepLenDecoder.Decode(m_RangeDecoder, posState) + Base.kMatchMinLen;
state.UpdateRep();
}
else
{
rep3 = rep2;
rep2 = rep1;
rep1 = rep0;
len = Base.kMatchMinLen + m_LenDecoder.Decode(m_RangeDecoder, posState);
state.UpdateMatch();
uint posSlot = m_PosSlotDecoder[Base.GetLenToPosState(len)].Decode(m_RangeDecoder);
if (posSlot >= Base.kStartPosModelIndex)
{
var numDirectBits = (int)((posSlot >> 1) - 1);
rep0 = ((2 | (posSlot & 1)) << numDirectBits);
if (posSlot < Base.kEndPosModelIndex)
{
rep0 += BitTreeDecoder.ReverseDecode(m_PosDecoders,
rep0 - posSlot - 1, m_RangeDecoder, numDirectBits);
}
else
{
rep0 += (m_RangeDecoder.DecodeDirectBits(
numDirectBits - Base.kNumAlignBits) << Base.kNumAlignBits);
rep0 += m_PosAlignDecoder.ReverseDecode(m_RangeDecoder);
}
}
else
{
rep0 = posSlot;
}
}
if (rep0 >= m_OutWindow.TrainSize + nowPos64 || rep0 >= m_DictionarySizeCheck)
{
if (rep0 == 0xFFFFFFFF)
{
break;
}
throw new DataErrorException();
}
m_OutWindow.CopyBlock(rep0, len);
nowPos64 += len;
}
}
}
m_OutWindow.Flush();
m_OutWindow.ReleaseStream();
m_RangeDecoder.ReleaseStream();
}
UInt32 GetRepPrice(UInt32 repIndex, UInt32 len, Base.State state, UInt32 posState)
{
UInt32 price = _repMatchLenEncoder.GetPrice(len - Base.kMatchMinLen, posState);
if (repIndex == 0)
{
price += _isRepG0[state.Index].GetPrice0();
price += _isRep0Long[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice1();
}
else
{
price += _isRepG0[state.Index].GetPrice1();
if (repIndex == 1)
price += _isRepG1[state.Index].GetPrice0();
else
{
price += _isRepG1[state.Index].GetPrice1();
price += _isRepG2[state.Index].GetPrice(repIndex - 2);
}
}
return price;
}
