jpg2kmqestate.cpp

JPEG里MQ算术编码测试程序 编解码器 C

#include "stdafx.h"
#include "JPG2KMQEncoder.h"
#include "JPG2KMQDecoder.h"
#include ".\jpg2kmqestate.h"

CJPG2KMQEState::CJPG2KMQEState()
{
	m_p_bar_mps=0;
	m_pTransition = NULL;
}

void	CJPG2KMQEState::InitEncoder(int Sigma, long s)
{
	m_p_bar_mps = CJPG2KMQEncoder::m_pBarTable[Sigma]+(s<<31);
	m_pTransition = CJPG2KMQEncoder::m_TransitionTable + ((Sigma<<1) + s);
}

void	CJPG2KMQEState::InitDecoder(int Sigma, long s)
{
	m_p_bar_mps = (CJPG2KMQDecoder::m_pBarTable[Sigma] << 8) + s;
	m_pTransition = CJPG2KMQDecoder::m_TransitionTable + ((Sigma<<1) + s);
}