public uint Decode(RangeDecoder decoder)
{
uint newBound = (decoder._range >> K_NUM_BIT_MODEL_TOTAL_BITS) * _prob;
if (decoder._code < newBound)
{
decoder._range = newBound;
_prob += (K_BIT_MODEL_TOTAL - _prob) >> NUM_MOVE_BITS;
if (decoder._range < K_TOP_VALUE)
{
decoder._code = (decoder._code << 8) | decoder.ReadByte();
decoder._range <<= 8;
}
return(0);
}
decoder._range -= newBound;
decoder._code -= newBound;
_prob -= _prob >> NUM_MOVE_BITS;
if (decoder._range < K_TOP_VALUE)
{
decoder._code = (decoder._code << 8) | decoder.ReadByte();
decoder._range <<= 8;
}
return(1);
}
public uint Decode(RangeDecoder decoder)
{
uint newBound = (decoder.Range >> kNumBitModelTotalBits) * Prob;
if (decoder.Code < newBound)
{
decoder.Range = newBound;
Prob += (kBitModelTotal - Prob) >> numMoveBits;
if (decoder.Range < kTopValue)
{
decoder.Code = (decoder.Code << 8) | decoder.ReadByte();
decoder.Range <<= 8;
}
return 0;
}
else
{
decoder.Range -= newBound;
decoder.Code -= newBound;
Prob -= Prob >> numMoveBits;
if (decoder.Range < kTopValue)
{
decoder.Code = (decoder.Code << 8) | decoder.ReadByte();
decoder.Range <<= 8;
}
return 1;
}
}
public Bcj2DecoderStream(Stream[] streams, byte[] info, long limit)
{
if (info != null && info.Length > 0)
{
throw new NotSupportedException();
}
if (streams.Length != 4)
{
throw new NotSupportedException();
}
mLimit = limit;
mMainStream = streams[0];
mCallStream = streams[1];
mJumpStream = streams[2];
mRangeDecoder = new RangeDecoder(streams[3]);
mStatusDecoder = new StatusDecoder[256 + 2];
for (int i = 0; i < mStatusDecoder.Length; i++)
{
mStatusDecoder[i] = new StatusDecoder();
}
mIter = Run().GetEnumerator();
}
public uint Decode(RangeDecoder decoder)
{
uint newBound = (decoder.Range >> kNumBitModelTotalBits) * Prob;
if (decoder.Code < newBound)
{
decoder.Range = newBound;
Prob += (kBitModelTotal - Prob) >> numMoveBits;
if (decoder.Range < kTopValue)
{
decoder.Code = (decoder.Code << 8) | decoder.ReadByte();
decoder.Range <<= 8;
}
return(0);
}
else
{
decoder.Range -= newBound;
decoder.Code -= newBound;
Prob -= Prob >> numMoveBits;
if (decoder.Range < kTopValue)
{
decoder.Code = (decoder.Code << 8) | decoder.ReadByte();
decoder.Range <<= 8;
}
return(1);
}
}
public uint Decode(RangeDecoder rangeRangeDecoder)
{
var newBound = (rangeRangeDecoder.Range >> kNumBitModelTotalBits) * Prob;
if (rangeRangeDecoder.Code < newBound)
{
rangeRangeDecoder.Range = newBound;
Prob += (kBitModelTotal - Prob) >> kNumMoveBits;
if (rangeRangeDecoder.Range < RangeDecoder.kTopValue)
{
rangeRangeDecoder.Code = (rangeRangeDecoder.Code << 8) | (byte)rangeRangeDecoder.Stream.ReadByte();
rangeRangeDecoder.Range <<= 8;
}
return(0);
}
rangeRangeDecoder.Range -= newBound;
rangeRangeDecoder.Code -= newBound;
Prob -= Prob >> kNumMoveBits;
if (rangeRangeDecoder.Range < RangeDecoder.kTopValue)
{
rangeRangeDecoder.Code = (rangeRangeDecoder.Code << 8) | (byte)rangeRangeDecoder.Stream.ReadByte();
rangeRangeDecoder.Range <<= 8;
}
return(1);
}
internal uint Decode(RangeDecoder RangeDecoder)
{
uint NewBound = (RangeDecoder.Range >> 11) * Prob;
if (RangeDecoder.Code < NewBound)
{
RangeDecoder.Range = NewBound;
Prob += (2048U - Prob) >> 5;
if (RangeDecoder.Range < 16777216U)
{
RangeDecoder.Code = (RangeDecoder.Code << 8) | (uint)RangeDecoder.Stream.ReadByte();
RangeDecoder.Range <<= 8;
}
return(0U);
}
else
{
RangeDecoder.Code -= NewBound;
RangeDecoder.Range -= NewBound;
Prob -= Prob >> 5;
if (RangeDecoder.Range < 16777216U)
{
RangeDecoder.Code = (RangeDecoder.Code << 8) | (uint)RangeDecoder.Stream.ReadByte();
RangeDecoder.Range <<= 8;
}
return(1U);
}
}
public uint Decode(RangeDecoder rangeRangeDecoder)
{
uint m = 1;
for (var bitIndex = NumBitLevels; bitIndex > 0; bitIndex--)
{
m = (m << 1) + Models[m].Decode(rangeRangeDecoder);
}
return(m - ((uint)1 << NumBitLevels));
}
internal byte Decode(RangeDecoder RangeDecoder)
{
uint Symbol = 1U;
while (Symbol < 256U)
{
Symbol = (Symbol << 1) | Decoders[Symbol].Decode(RangeDecoder);
}
return((byte)Symbol);
}
public uint ReverseDecode(RangeDecoder rangeRangeDecoder)
{
uint m = 1;
uint symbol = 0;
for (var bitIndex = 0; bitIndex < NumBitLevels; bitIndex++)
{
var bit = Models[m].Decode(rangeRangeDecoder);
m <<= 1;
m += bit;
symbol |= bit << bitIndex;
}
return(symbol);
}
public static uint ReverseDecode(BitDecoder[] Models, uint startIndex,
RangeDecoder rangeRangeDecoder, int NumBitLevels)
{
uint m = 1;
uint symbol = 0;
for (var bitIndex = 0; bitIndex < NumBitLevels; bitIndex++)
{
var bit = Models[startIndex + m].Decode(rangeRangeDecoder);
m <<= 1;
m += bit;
symbol |= bit << bitIndex;
}
return(symbol);
}
public Bcj2DecoderStream(Stream[] streams, byte[] info, long limit)
{
if (info != null && info.Length > 0)
throw new NotSupportedException();
if (streams.Length != 4)
throw new NotSupportedException();
mMainStream = streams[0];
mCallStream = streams[1];
mJumpStream = streams[2];
mRangeDecoder = new RangeDecoder(streams[3]);
mStatusDecoder = new StatusDecoder[256 + 2];
for (int i = 0; i < mStatusDecoder.Length; i++)
mStatusDecoder[i] = new StatusDecoder();
mIter = Run().GetEnumerator();
}
internal byte Decode(RangeDecoder RangeDecoder, byte MatchByte)
{
uint Match = MatchByte, Symbol = 1U;
while (Symbol < 256U)
{
uint MatchBit = (Match >> 7) & 1U, Bit = Decoders[((1U + MatchBit) << 8) + Symbol].Decode(RangeDecoder);
Match <<= 1;
Symbol = (Symbol << 1) | Bit;
if (MatchBit != Bit)
{
while (Symbol < 256U)
{
Symbol = (Symbol << 1) | Decoders[Symbol].Decode(RangeDecoder);
}
break;
}
}
return((byte)Symbol);
}
public override void SetInputStream(int index, ReaderNode stream, long length)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
switch (index)
{
case 0: mMainStream = stream; break;
case 1: mCallStream = stream; break;
case 2: mJumpStream = stream; break;
case 3: mRangeDecoder = new RangeDecoder(stream); break;
default: throw new ArgumentOutOfRangeException(nameof(index));
}
}
public uint Decode(RangeDecoder rangeDecoder, uint posState)
{
if (m_Choice.Decode(rangeDecoder) == 0)
{
return(m_LowCoder[posState].Decode(rangeDecoder));
}
else
{
uint symbol = LzmaBase.kNumLowLenSymbols;
if (m_Choice2.Decode(rangeDecoder) == 0)
{
symbol += m_MidCoder[posState].Decode(rangeDecoder);
}
else
{
symbol += LzmaBase.kNumMidLenSymbols;
symbol += m_HighCoder.Decode(rangeDecoder);
}
return(symbol);
}
}
public Bcj2DecoderStream(Stream[] streams, byte[] info, long limit)
{
if ((info != null) && (info.Length > 0))
{
throw new NotSupportedException();
}
if (streams.Length != 4)
{
throw new NotSupportedException();
}
this.mLimit = limit;
this.mMainStream = streams[0];
this.mCallStream = streams[1];
this.mJumpStream = streams[2];
this.mRangeDecoder = new RangeDecoder(streams[3]);
this.mStatusDecoder = new StatusDecoder[0x102];
for (int i = 0; i < this.mStatusDecoder.Length; i++)
{
this.mStatusDecoder[i] = new StatusDecoder();
}
this.mIter = this.Run().GetEnumerator();
}
public Bcj2DecoderStream(Stream[] streams, byte[] info, long limit)
{
if ((info != null) && (info.Length > 0))
{
throw new NotSupportedException();
}
if (streams.Length != 4)
{
throw new NotSupportedException();
}
this.mLimit = limit;
this.mMainStream = streams[0];
this.mCallStream = streams[1];
this.mJumpStream = streams[2];
this.mRangeDecoder = new RangeDecoder(streams[3]);
this.mStatusDecoder = new StatusDecoder[0x102];
for (int i = 0; i < this.mStatusDecoder.Length; i++)
{
this.mStatusDecoder[i] = new StatusDecoder();
}
this.mIter = this.Run().GetEnumerator();
}
internal byte Decode(RangeDecoder RangeDecoder, uint Position, byte PreviousByte, byte MatchByte) => Decoders[GetState(Position, PreviousByte)].Decode(RangeDecoder, MatchByte);
public override void SetInputStream(int index, ReaderNode stream, long length)
{
if (stream == null)
throw new ArgumentNullException(nameof(stream));
switch (index)
{
case 0: mMainStream = stream; break;
case 1: mCallStream = stream; break;
case 2: mJumpStream = stream; break;
case 3: mRangeDecoder = new RangeDecoder(stream); break;
default: throw new ArgumentOutOfRangeException(nameof(index));
}
}
internal uint Decode(RangeDecoder RangeDecoder, uint PositionState) => ChoiceA.Decode(RangeDecoder) == 0U ? LowDecoder[PositionState].Decode(RangeDecoder) : 8U + (ChoiceB.Decode(RangeDecoder) == 0U ? MidDecoder[PositionState].Decode(RangeDecoder) : (8U + HighDecoder.Decode(RangeDecoder)));
