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4.58 beta

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This commit is contained in:
Igor Pavlov
2008-05-05 00:00:00 +00:00
committed by Kornel Lesiński
parent bd1fa36322
commit 3901bf0ab8
326 changed files with 10643 additions and 14913 deletions
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19
CPP/7zip/Compress/RangeCoder/RangeCoderBit.h
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@@ -11,18 +11,12 @@ namespace NRangeCoder {
const int kNumBitModelTotalBits = 11;
const UInt32 kBitModelTotal = (1 << kNumBitModelTotalBits);
const int kNumMoveReducingBits = 2;
const int kNumMoveReducingBits = 4;
const int kNumBitPriceShiftBits = 6;
const int kNumBitPriceShiftBits = 4;
const UInt32 kBitPrice = 1 << kNumBitPriceShiftBits;
class CPriceTables
{
public:
static UInt32 ProbPrices[kBitModelTotal >> kNumMoveReducingBits];
static void Init();
CPriceTables();
};
extern UInt32 ProbPrices[kBitModelTotal >> kNumMoveReducingBits];
template <int numMoveBits>
class CBitModel
@@ -74,11 +68,10 @@ public:
}
UInt32 GetPrice(UInt32 symbol) const
{
return CPriceTables::ProbPrices[
(((this->Prob - symbol) ^ ((-(int)symbol))) & (kBitModelTotal - 1)) >> kNumMoveReducingBits];
return ProbPrices[(this->Prob ^ ((-(int)symbol)) & (kBitModelTotal - 1)) >> kNumMoveReducingBits];
}
UInt32 GetPrice0() const { return CPriceTables::ProbPrices[this->Prob >> kNumMoveReducingBits]; }
UInt32 GetPrice1() const { return CPriceTables::ProbPrices[(kBitModelTotal - this->Prob) >> kNumMoveReducingBits]; }
UInt32 GetPrice0() const { return ProbPrices[this->Prob >> kNumMoveReducingBits]; }
UInt32 GetPrice1() const { return ProbPrices[(this->Prob ^ (kBitModelTotal - 1)) >> kNumMoveReducingBits]; }
};