diff -r 5f819b90d479 -r 99b265e0d1d0 misc/libphysfs/lzma/CPP/7zip/Compress/RangeCoder/RangeCoderBitTree.h --- a/misc/libphysfs/lzma/CPP/7zip/Compress/RangeCoder/RangeCoderBitTree.h Thu Oct 11 23:43:31 2018 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,161 +0,0 @@ -// Compress/RangeCoder/RangeCoderBitTree.h - -#ifndef __COMPRESS_RANGECODER_BIT_TREE_H -#define __COMPRESS_RANGECODER_BIT_TREE_H - -#include "RangeCoderBit.h" -#include "RangeCoderOpt.h" - -namespace NCompress { -namespace NRangeCoder { - -template -class CBitTreeEncoder -{ - CBitEncoder Models[1 << NumBitLevels]; -public: - void Init() - { - for(UInt32 i = 1; i < (1 << NumBitLevels); i++) - Models[i].Init(); - } - void Encode(CEncoder *rangeEncoder, UInt32 symbol) - { - UInt32 modelIndex = 1; - for (int bitIndex = NumBitLevels; bitIndex != 0 ;) - { - bitIndex--; - UInt32 bit = (symbol >> bitIndex) & 1; - Models[modelIndex].Encode(rangeEncoder, bit); - modelIndex = (modelIndex << 1) | bit; - } - }; - void ReverseEncode(CEncoder *rangeEncoder, UInt32 symbol) - { - UInt32 modelIndex = 1; - for (int i = 0; i < NumBitLevels; i++) - { - UInt32 bit = symbol & 1; - Models[modelIndex].Encode(rangeEncoder, bit); - modelIndex = (modelIndex << 1) | bit; - symbol >>= 1; - } - } - UInt32 GetPrice(UInt32 symbol) const - { - symbol |= (1 << NumBitLevels); - UInt32 price = 0; - while (symbol != 1) - { - price += Models[symbol >> 1].GetPrice(symbol & 1); - symbol >>= 1; - } - return price; - } - UInt32 ReverseGetPrice(UInt32 symbol) const - { - UInt32 price = 0; - UInt32 modelIndex = 1; - for (int i = NumBitLevels; i != 0; i--) - { - UInt32 bit = symbol & 1; - symbol >>= 1; - price += Models[modelIndex].GetPrice(bit); - modelIndex = (modelIndex << 1) | bit; - } - return price; - } -}; - -template -class CBitTreeDecoder -{ - CBitDecoder Models[1 << NumBitLevels]; -public: - void Init() - { - for(UInt32 i = 1; i < (1 << NumBitLevels); i++) - Models[i].Init(); - } - UInt32 Decode(CDecoder *rangeDecoder) - { - UInt32 modelIndex = 1; - RC_INIT_VAR - for(int bitIndex = NumBitLevels; bitIndex != 0; bitIndex--) - { - // modelIndex = (modelIndex << 1) + Models[modelIndex].Decode(rangeDecoder); - RC_GETBIT(numMoveBits, Models[modelIndex].Prob, modelIndex) - } - RC_FLUSH_VAR - return modelIndex - (1 << NumBitLevels); - }; - UInt32 ReverseDecode(CDecoder *rangeDecoder) - { - UInt32 modelIndex = 1; - UInt32 symbol = 0; - RC_INIT_VAR - for(int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++) - { - // UInt32 bit = Models[modelIndex].Decode(rangeDecoder); - // modelIndex <<= 1; - // modelIndex += bit; - // symbol |= (bit << bitIndex); - RC_GETBIT2(numMoveBits, Models[modelIndex].Prob, modelIndex, ; , symbol |= (1 << bitIndex)) - } - RC_FLUSH_VAR - return symbol; - } -}; - -template -void ReverseBitTreeEncode(CBitEncoder *Models, - CEncoder *rangeEncoder, int NumBitLevels, UInt32 symbol) -{ - UInt32 modelIndex = 1; - for (int i = 0; i < NumBitLevels; i++) - { - UInt32 bit = symbol & 1; - Models[modelIndex].Encode(rangeEncoder, bit); - modelIndex = (modelIndex << 1) | bit; - symbol >>= 1; - } -} - -template -UInt32 ReverseBitTreeGetPrice(CBitEncoder *Models, - UInt32 NumBitLevels, UInt32 symbol) -{ - UInt32 price = 0; - UInt32 modelIndex = 1; - for (int i = NumBitLevels; i != 0; i--) - { - UInt32 bit = symbol & 1; - symbol >>= 1; - price += Models[modelIndex].GetPrice(bit); - modelIndex = (modelIndex << 1) | bit; - } - return price; -} - -template -UInt32 ReverseBitTreeDecode(CBitDecoder *Models, - CDecoder *rangeDecoder, int NumBitLevels) -{ - UInt32 modelIndex = 1; - UInt32 symbol = 0; - RC_INIT_VAR - for(int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++) - { - // UInt32 bit = Models[modelIndex].Decode(rangeDecoder); - // modelIndex <<= 1; - // modelIndex += bit; - // symbol |= (bit << bitIndex); - RC_GETBIT2(numMoveBits, Models[modelIndex].Prob, modelIndex, ; , symbol |= (1 << bitIndex)) - } - RC_FLUSH_VAR - return symbol; -} - -}} - -#endif