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#include "LenCoder.h"
using namespace NCompression;
using namespace NArithmetic;
namespace NLength {
void CEncoder::Init()
{
m_Choice.Init();
for (UINT32 aPosState = 0; aPosState < m_NumPosStates; aPosState++)
{
m_LowCoder[aPosState].Init();
m_MidCoder[aPosState].Init();
}
m_Choice2.Init();
m_HighCoder.Init();
}
void CEncoder::Encode(CMyRangeEncoder *aRangeEncoder, UINT32 aSymbol, UINT32 aPosState)
{
if(aSymbol < kNumLowSymbols)
{
m_Choice.Encode(aRangeEncoder, 0);
m_LowCoder[aPosState].Encode(aRangeEncoder, aSymbol);
}
else
{
aSymbol -= kNumLowSymbols;
m_Choice.Encode(aRangeEncoder, 1);
if(aSymbol < kNumMidSymbols)
{
m_Choice2.Encode(aRangeEncoder, 0);
m_MidCoder[aPosState].Encode(aRangeEncoder, aSymbol);
}
else
{
aSymbol -= kNumMidSymbols;
m_Choice2.Encode(aRangeEncoder, 1);
m_HighCoder.Encode(aRangeEncoder, aSymbol);
}
}
}
UINT32 CEncoder::GetPrice(UINT32 aSymbol, UINT32 aPosState) const
{
UINT32 aPrice = 0;
if(aSymbol < kNumLowSymbols)
{
aPrice += m_Choice.GetPrice(0);
aPrice += m_LowCoder[aPosState].GetPrice(aSymbol);
}
else
{
aSymbol -= kNumLowSymbols;
aPrice += m_Choice.GetPrice(1);
if(aSymbol < kNumMidSymbols)
{
aPrice += m_Choice2.GetPrice(0);
aPrice += m_MidCoder[aPosState].GetPrice(aSymbol);
}
else
{
aSymbol -= kNumMidSymbols;
aPrice += m_Choice2.GetPrice(1);
aPrice += m_HighCoder.GetPrice(aSymbol);
}
}
return aPrice;
}
}
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