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Size: 1.24 KB
Versions: 5
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Stored size: 1.24 KB
Contents
// File: lzham_lzbase.h
// See Copyright Notice and license at the end of include/lzham.h
#pragma once
#include "lzham_lzdecompbase.h"
//#define LZHAM_LZVERIFY
//#define LZHAM_DISABLE_RAW_BLOCKS
namespace lzham
{
struct CLZBase : CLZDecompBase
{
static uint8 m_slot_tab0[4096];
static uint8 m_slot_tab1[512];
static uint8 m_slot_tab2[256];
void init_slot_tabs();
inline void compute_lzx_position_slot(uint dist, uint& slot, uint& ofs)
{
uint s;
if (dist < 0x1000)
s = m_slot_tab0[dist];
else if (dist < 0x100000)
s = m_slot_tab1[dist >> 11];
else if (dist < 0x1000000)
s = m_slot_tab2[dist >> 16];
else if (dist < 0x2000000)
s = 48 + ((dist - 0x1000000) >> 23);
else if (dist < 0x4000000)
s = 50 + ((dist - 0x2000000) >> 24);
else
s = 52 + ((dist - 0x4000000) >> 25);
ofs = (dist - m_lzx_position_base[s]) & m_lzx_position_extra_mask[s];
slot = s;
LZHAM_ASSERT(s < m_num_lzx_slots);
LZHAM_ASSERT((m_lzx_position_base[slot] + ofs) == dist);
LZHAM_ASSERT(ofs < (1U << m_lzx_position_extra_bits[slot]));
}
};
} // namespace lzham
Version data entries
5 entries across 5 versions & 1 rubygems