internal bool Code(int dictionarySize, OutWindow outWindow, RangeCoder.Decoder rangeDecoder) { int dictionarySizeCheck = Math.Max(dictionarySize, 1); outWindow.CopyPending(); while (outWindow.HasSpace) { uint posState = (uint)outWindow._total & _posStateMask; if (_isMatchDecoders[(_state._index << Base.K_NUM_POS_STATES_BITS_MAX) + posState].Decode(rangeDecoder) == 0) { byte b; byte prevByte = outWindow.GetByte(0); if (!_state.IsCharState()) { b = _literalDecoder.DecodeWithMatchByte(rangeDecoder, (uint)outWindow._total, prevByte, outWindow.GetByte((int)_rep0)); } else { b = _literalDecoder.DecodeNormal(rangeDecoder, (uint)outWindow._total, prevByte); } outWindow.PutByte(b); _state.UpdateChar(); } else { uint len; if (_isRepDecoders[_state._index].Decode(rangeDecoder) == 1) { if (_isRepG0Decoders[_state._index].Decode(rangeDecoder) == 0) { if ( _isRep0LongDecoders[(_state._index << Base.K_NUM_POS_STATES_BITS_MAX) + posState].Decode( rangeDecoder) == 0) { _state.UpdateShortRep(); outWindow.PutByte(outWindow.GetByte((int)_rep0)); continue; } } else { UInt32 distance; if (_isRepG1Decoders[_state._index].Decode(rangeDecoder) == 0) { distance = _rep1; } else { if (_isRepG2Decoders[_state._index].Decode(rangeDecoder) == 0) { distance = _rep2; } else { distance = _rep3; _rep3 = _rep2; } _rep2 = _rep1; } _rep1 = _rep0; _rep0 = distance; } len = _repLenDecoder.Decode(rangeDecoder, posState) + Base.K_MATCH_MIN_LEN; _state.UpdateRep(); } else { _rep3 = _rep2; _rep2 = _rep1; _rep1 = _rep0; len = Base.K_MATCH_MIN_LEN + _lenDecoder.Decode(rangeDecoder, posState); _state.UpdateMatch(); uint posSlot = _posSlotDecoder[Base.GetLenToPosState(len)].Decode(rangeDecoder); if (posSlot >= Base.K_START_POS_MODEL_INDEX) { int numDirectBits = (int)((posSlot >> 1) - 1); _rep0 = ((2 | (posSlot & 1)) << numDirectBits); if (posSlot < Base.K_END_POS_MODEL_INDEX) { _rep0 += BitTreeDecoder.ReverseDecode(_posDecoders, _rep0 - posSlot - 1, rangeDecoder, numDirectBits); } else { _rep0 += (rangeDecoder.DecodeDirectBits( numDirectBits - Base.K_NUM_ALIGN_BITS) << Base.K_NUM_ALIGN_BITS); _rep0 += _posAlignDecoder.ReverseDecode(rangeDecoder); } } else { _rep0 = posSlot; } } if (_rep0 >= outWindow._total || _rep0 >= dictionarySizeCheck) { if (_rep0 == 0xFFFFFFFF) { return(true); } throw new DataErrorException(); } outWindow.CopyBlock((int)_rep0, (int)len); } } return(false); }
internal bool Code(int dictionarySize, OutWindow outWindow, RangeCoder.Decoder rangeDecoder) { int dictionarySizeCheck = Math.Max(dictionarySize, 1); outWindow.CopyPending(); while (outWindow.HasSpace) { uint posState = (uint)outWindow.Total & m_PosStateMask; if (m_IsMatchDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(rangeDecoder) == 0) { byte b; byte prevByte = outWindow.GetByte(0); if (!state.IsCharState()) { b = m_LiteralDecoder.DecodeWithMatchByte(rangeDecoder, (uint)outWindow.Total, prevByte, outWindow.GetByte((int)rep0)); } else { b = m_LiteralDecoder.DecodeNormal(rangeDecoder, (uint)outWindow.Total, prevByte); } outWindow.PutByte(b); state.UpdateChar(); } else { uint len; if (m_IsRepDecoders[state.Index].Decode(rangeDecoder) == 1) { if (m_IsRepG0Decoders[state.Index].Decode(rangeDecoder) == 0) { if ( m_IsRep0LongDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode( rangeDecoder) == 0) { state.UpdateShortRep(); outWindow.PutByte(outWindow.GetByte((int)rep0)); continue; } } else { UInt32 distance; if (m_IsRepG1Decoders[state.Index].Decode(rangeDecoder) == 0) { distance = rep1; } else { if (m_IsRepG2Decoders[state.Index].Decode(rangeDecoder) == 0) { distance = rep2; } else { distance = rep3; rep3 = rep2; } rep2 = rep1; } rep1 = rep0; rep0 = distance; } len = m_RepLenDecoder.Decode(rangeDecoder, posState) + Base.kMatchMinLen; state.UpdateRep(); } else { rep3 = rep2; rep2 = rep1; rep1 = rep0; len = Base.kMatchMinLen + m_LenDecoder.Decode(rangeDecoder, posState); state.UpdateMatch(); uint posSlot = m_PosSlotDecoder[Base.GetLenToPosState(len)].Decode(rangeDecoder); if (posSlot >= Base.kStartPosModelIndex) { int numDirectBits = (int)((posSlot >> 1) - 1); rep0 = ((2 | (posSlot & 1)) << numDirectBits); if (posSlot < Base.kEndPosModelIndex) { rep0 += BitTreeDecoder.ReverseDecode(m_PosDecoders, rep0 - posSlot - 1, rangeDecoder, numDirectBits); } else { rep0 += (rangeDecoder.DecodeDirectBits( numDirectBits - Base.kNumAlignBits) << Base.kNumAlignBits); rep0 += m_PosAlignDecoder.ReverseDecode(rangeDecoder); } } else { rep0 = posSlot; } } if (rep0 >= outWindow.Total || rep0 >= dictionarySizeCheck) { if (rep0 == 0xFFFFFFFF) { return(true); } throw new DataErrorException(); } outWindow.CopyBlock((int)rep0, (int)len); } } return(false); }
public void Code(Stream inStream, Stream outStream, long inSize, long outSize, ICodeProgress progress) { Init(inStream, outStream); Base.State state = default(Base.State); state.Init(); uint num = 0u; uint num2 = 0u; uint num3 = 0u; uint num4 = 0u; ulong num5 = 0uL; if (num5 < (ulong)outSize) { if (m_IsMatchDecoders[state.Index << 4].Decode(m_RangeDecoder) != 0) { throw new DataErrorException(); } state.UpdateChar(); byte b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, 0u, 0); m_OutWindow.PutByte(b); num5++; } while (num5 < (ulong)outSize) { uint num6 = (uint)((int)num5 & (int)m_PosStateMask); if (m_IsMatchDecoders[(state.Index << 4) + num6].Decode(m_RangeDecoder) == 0) { byte @byte = m_OutWindow.GetByte(0u); byte b2 = state.IsCharState() ? m_LiteralDecoder.DecodeNormal(m_RangeDecoder, (uint)num5, @byte) : m_LiteralDecoder.DecodeWithMatchByte(m_RangeDecoder, (uint)num5, @byte, m_OutWindow.GetByte(num)); m_OutWindow.PutByte(b2); state.UpdateChar(); num5++; continue; } uint num8; if (m_IsRepDecoders[state.Index].Decode(m_RangeDecoder) == 1) { if (m_IsRepG0Decoders[state.Index].Decode(m_RangeDecoder) == 0) { if (m_IsRep0LongDecoders[(state.Index << 4) + num6].Decode(m_RangeDecoder) == 0) { state.UpdateShortRep(); m_OutWindow.PutByte(m_OutWindow.GetByte(num)); num5++; continue; } } else { uint num7; if (m_IsRepG1Decoders[state.Index].Decode(m_RangeDecoder) == 0) { num7 = num2; } else { if (m_IsRepG2Decoders[state.Index].Decode(m_RangeDecoder) == 0) { num7 = num3; } else { num7 = num4; num4 = num3; } num3 = num2; } num2 = num; num = num7; } num8 = m_RepLenDecoder.Decode(m_RangeDecoder, num6) + 2; state.UpdateRep(); } else { num4 = num3; num3 = num2; num2 = num; num8 = 2 + m_LenDecoder.Decode(m_RangeDecoder, num6); state.UpdateMatch(); uint num9 = m_PosSlotDecoder[Base.GetLenToPosState(num8)].Decode(m_RangeDecoder); if (num9 >= 4) { int num10 = (int)((num9 >> 1) - 1); num = (2 | (num9 & 1)) << num10; if (num9 < 14) { num += BitTreeDecoder.ReverseDecode(m_PosDecoders, num - num9 - 1, m_RangeDecoder, num10); } else { num += m_RangeDecoder.DecodeDirectBits(num10 - 4) << 4; num += m_PosAlignDecoder.ReverseDecode(m_RangeDecoder); } } else { num = num9; } } if (num >= m_OutWindow.TrainSize + num5 || num >= m_DictionarySizeCheck) { if (num == uint.MaxValue) { break; } throw new DataErrorException(); } m_OutWindow.CopyBlock(num, num8); num5 += num8; } m_OutWindow.Flush(); m_OutWindow.ReleaseStream(); m_RangeDecoder.ReleaseStream(); }
public void Code(Stream inStream, Stream outStream, Int64 inSize, Int64 outSize, ICodeProgress progress) { Init(inStream, outStream); Base.State state = new Base.State(); state.Init(); uint rep0 = 0, rep1 = 0, rep2 = 0, rep3 = 0; UInt64 nowPos64 = 0; UInt64 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) { int 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(); }
internal bool Code(int dictionarySize, OutWindow outWindow, Decoder rangeDecoder) { int num = Math.Max(dictionarySize, 1); outWindow.CopyPending(); while (outWindow.HasSpace) { uint num5; uint posState = ((uint)outWindow.Total) & this.m_PosStateMask; if (this.m_IsMatchDecoders[(this.state.Index << 4) + posState].Decode(rangeDecoder) == 0) { byte @byte = outWindow.GetByte(0); byte b = this.state.IsCharState() ? this.m_LiteralDecoder.DecodeNormal(rangeDecoder, (uint)outWindow.Total, @byte) : this.m_LiteralDecoder.DecodeWithMatchByte(rangeDecoder, (uint)outWindow.Total, @byte, outWindow.GetByte((int)this.rep0)); outWindow.PutByte(b); this.state.UpdateChar(); continue; } if (this.m_IsRepDecoders[this.state.Index].Decode(rangeDecoder) != 1) { this.rep3 = this.rep2; this.rep2 = this.rep1; this.rep1 = this.rep0; num5 = 2 + this.m_LenDecoder.Decode(rangeDecoder, posState); this.state.UpdateMatch(); uint num7 = this.m_PosSlotDecoder[Base.GetLenToPosState(num5)].Decode(rangeDecoder); if (num7 < 4) { this.rep0 = num7; } else { int numBitLevels = ((int)(num7 >> 1)) - 1; this.rep0 = (uint)((2 | (num7 & 1)) << (numBitLevels & 0x1f)); if (num7 < 14) { this.rep0 += BitTreeDecoder.ReverseDecode(this.m_PosDecoders, (this.rep0 - num7) - 1, rangeDecoder, numBitLevels); } else { this.rep0 += rangeDecoder.DecodeDirectBits(numBitLevels - 4) << 4; this.rep0 += this.m_PosAlignDecoder.ReverseDecode(rangeDecoder); } } } else { if (this.m_IsRepG0Decoders[this.state.Index].Decode(rangeDecoder) == 0) { if (this.m_IsRep0LongDecoders[(this.state.Index << 4) + posState].Decode(rangeDecoder) == 0) { this.state.UpdateShortRep(); outWindow.PutByte(outWindow.GetByte((int)this.rep0)); continue; } } else { uint num6; if (this.m_IsRepG1Decoders[this.state.Index].Decode(rangeDecoder) == 0) { num6 = this.rep1; } else { if (this.m_IsRepG2Decoders[this.state.Index].Decode(rangeDecoder) == 0) { num6 = this.rep2; } else { num6 = this.rep3; this.rep3 = this.rep2; } this.rep2 = this.rep1; } this.rep1 = this.rep0; this.rep0 = num6; } num5 = this.m_RepLenDecoder.Decode(rangeDecoder, posState) + 2; this.state.UpdateRep(); } if ((this.rep0 >= outWindow.Total) || (this.rep0 >= num)) { if (this.rep0 != uint.MaxValue) { throw new DataErrorException(); } return(true); } outWindow.CopyBlock((int)this.rep0, (int)num5); } return(false); }