1 // ImplodeHuffmanDecoder.h
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3 #ifndef __IMPLODE_HUFFMAN_DECODER_H
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4 #define __IMPLODE_HUFFMAN_DECODER_H
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6 #include "../Common/InBuffer.h"
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8 #include "BitlDecoder.h"
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10 namespace NCompress {
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11 namespace NImplode {
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12 namespace NHuffman {
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14 const int kNumBitsInLongestCode = 16;
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16 typedef NBitl::CDecoder<CInBuffer> CInBit;
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20 UInt32 m_Limitits[kNumBitsInLongestCode + 2]; // m_Limitits[i] = value limit for symbols with length = i
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21 UInt32 m_Positions[kNumBitsInLongestCode + 2]; // m_Positions[i] = index in m_Symbols[] of first symbol with length = i
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22 UInt32 m_NumSymbols; // number of symbols in m_Symbols
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23 UInt32 *m_Symbols; // symbols: at first with len=1 then 2, ... 15.
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25 CDecoder(UInt32 numSymbols);
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28 bool SetCodeLengths(const Byte *codeLengths);
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29 UInt32 DecodeSymbol(CInBit *inStream);
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