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/*****************************************************************************/
/* huffman.cpp Copyright (c) Ladislav Zezula 1998-2003 */
/*---------------------------------------------------------------------------*/
/* This module contains Huffmann (de)compression methods */
/* */
/* Authors : Ladislav Zezula (ladik@zezula.net) */
/* ShadowFlare (BlakFlare@hotmail.com) */
/* */
/*---------------------------------------------------------------------------*/
/* Date Ver Who Comment */
/* -------- ---- --- ------- */
/* xx.xx.xx 1.00 Lad The first version of dcmp.cpp */
/* 03.05.03 1.00 Lad Added compression methods */
/* 19.11.03 1.01 Dan Big endian handling */
/* 08.12.03 2.01 Dan High-memory handling (> 0x80000000) */
/* 09.01.13 3.00 Lad Refactored, beautified, documented :-) */
/*****************************************************************************/
#include <assert.h>
#include <string.h>
#include "huff.h"
//-----------------------------------------------------------------------------
// Table of byte-to-weight values
// Table for (de)compression. Every compression type has 258 entries
static unsigned char ByteToWeight_00[] =
{
0x0A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00
};
// Data for compression type 0x01
static unsigned char ByteToWeight_01[] =
{
0x54, 0x16, 0x16, 0x0D, 0x0C, 0x08, 0x06, 0x05, 0x06, 0x05, 0x06, 0x03, 0x04, 0x04, 0x03, 0x05,
0x0E, 0x0B, 0x14, 0x13, 0x13, 0x09, 0x0B, 0x06, 0x05, 0x04, 0x03, 0x02, 0x03, 0x02, 0x02, 0x02,
0x0D, 0x07, 0x09, 0x06, 0x06, 0x04, 0x03, 0x02, 0x04, 0x03, 0x03, 0x03, 0x03, 0x03, 0x02, 0x02,
0x09, 0x06, 0x04, 0x04, 0x04, 0x04, 0x03, 0x02, 0x03, 0x02, 0x02, 0x02, 0x02, 0x03, 0x02, 0x04,
0x08, 0x03, 0x04, 0x07, 0x09, 0x05, 0x03, 0x03, 0x03, 0x03, 0x02, 0x02, 0x02, 0x03, 0x02, 0x02,
0x03, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x02, 0x01, 0x02, 0x02,
0x06, 0x0A, 0x08, 0x08, 0x06, 0x07, 0x04, 0x03, 0x04, 0x04, 0x02, 0x02, 0x04, 0x02, 0x03, 0x03,
0x04, 0x03, 0x07, 0x07, 0x09, 0x06, 0x04, 0x03, 0x03, 0x02, 0x01, 0x02, 0x02, 0x02, 0x02, 0x02,
0x0A, 0x02, 0x02, 0x03, 0x02, 0x02, 0x01, 0x01, 0x02, 0x02, 0x02, 0x06, 0x03, 0x05, 0x02, 0x03,
0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x03, 0x01, 0x01, 0x01,
0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x04, 0x04, 0x04, 0x07, 0x09, 0x08, 0x0C, 0x02,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x03,
0x04, 0x01, 0x02, 0x04, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01,
0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x01, 0x01, 0x02, 0x02, 0x02, 0x06, 0x4B,
0x00, 0x00
};
// Data for compression type 0x02
static unsigned char ByteToWeight_02[] =
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x27, 0x00, 0x00, 0x23, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xFF, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x01, 0x01, 0x06, 0x0E, 0x10, 0x04,
0x06, 0x08, 0x05, 0x04, 0x04, 0x03, 0x03, 0x02, 0x02, 0x03, 0x03, 0x01, 0x01, 0x02, 0x01, 0x01,
0x01, 0x04, 0x02, 0x04, 0x02, 0x02, 0x02, 0x01, 0x01, 0x04, 0x01, 0x01, 0x02, 0x03, 0x03, 0x02,
0x03, 0x01, 0x03, 0x06, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x02, 0x01, 0x01,
0x01, 0x29, 0x07, 0x16, 0x12, 0x40, 0x0A, 0x0A, 0x11, 0x25, 0x01, 0x03, 0x17, 0x10, 0x26, 0x2A,
0x10, 0x01, 0x23, 0x23, 0x2F, 0x10, 0x06, 0x07, 0x02, 0x09, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00
};
// Data for compression type 0x03
static unsigned char ByteToWeight_03[] =
{
0xFF, 0x0B, 0x07, 0x05, 0x0B, 0x02, 0x02, 0x02, 0x06, 0x02, 0x02, 0x01, 0x04, 0x02, 0x01, 0x03,
0x09, 0x01, 0x01, 0x01, 0x03, 0x04, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01,
0x05, 0x01, 0x01, 0x01, 0x0D, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x02, 0x01, 0x01, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01,
0x0A, 0x04, 0x02, 0x01, 0x06, 0x03, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x03, 0x01, 0x01, 0x01,
0x05, 0x02, 0x03, 0x04, 0x03, 0x03, 0x03, 0x02, 0x01, 0x01, 0x01, 0x02, 0x01, 0x02, 0x03, 0x03,
0x01, 0x03, 0x01, 0x01, 0x02, 0x05, 0x01, 0x01, 0x04, 0x03, 0x05, 0x01, 0x03, 0x01, 0x03, 0x03,
0x02, 0x01, 0x04, 0x03, 0x0A, 0x06, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x02, 0x02, 0x01, 0x0A, 0x02, 0x05, 0x01, 0x01, 0x02, 0x07, 0x02, 0x17, 0x01, 0x05, 0x01, 0x01,
0x0E, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x06, 0x02, 0x01, 0x04, 0x05, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x07, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01,
0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x11,
0x00, 0x00
};
// Data for compression type 0x04
static unsigned char ByteToWeight_04[] =
{
0xFF, 0xFB, 0x98, 0x9A, 0x84, 0x85, 0x63, 0x64, 0x3E, 0x3E, 0x22, 0x22, 0x13, 0x13, 0x18, 0x17,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00
};
// Data for compression type 0x05
static unsigned char ByteToWeight_05[] =
{
0xFF, 0xF1, 0x9D, 0x9E, 0x9A, 0x9B, 0x9A, 0x97, 0x93, 0x93, 0x8C, 0x8E, 0x86, 0x88, 0x80, 0x82,
0x7C, 0x7C, 0x72, 0x73, 0x69, 0x6B, 0x5F, 0x60, 0x55, 0x56, 0x4A, 0x4B, 0x40, 0x41, 0x37, 0x37,
0x2F, 0x2F, 0x27, 0x27, 0x21, 0x21, 0x1B, 0x1C, 0x17, 0x17, 0x13, 0x13, 0x10, 0x10, 0x0D, 0x0D,
0x0B, 0x0B, 0x09, 0x09, 0x08, 0x08, 0x07, 0x07, 0x06, 0x05, 0x05, 0x04, 0x04, 0x04, 0x19, 0x18,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00
};
// Data for compression type 0x06
static unsigned char ByteToWeight_06[] =
{
0xC3, 0xCB, 0xF5, 0x41, 0xFF, 0x7B, 0xF7, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xBF, 0xCC, 0xF2, 0x40, 0xFD, 0x7C, 0xF7, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x7A, 0x46, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00
};
// Data for compression type 0x07
static unsigned char ByteToWeight_07[] =
{
0xC3, 0xD9, 0xEF, 0x3D, 0xF9, 0x7C, 0xE9, 0x1E, 0xFD, 0xAB, 0xF1, 0x2C, 0xFC, 0x5B, 0xFE, 0x17,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xBD, 0xD9, 0xEC, 0x3D, 0xF5, 0x7D, 0xE8, 0x1D, 0xFB, 0xAE, 0xF0, 0x2C, 0xFB, 0x5C, 0xFF, 0x18,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x70, 0x6C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00
};
// Data for compression type 0x08
static unsigned char ByteToWeight_08[] =
{
0xBA, 0xC5, 0xDA, 0x33, 0xE3, 0x6D, 0xD8, 0x18, 0xE5, 0x94, 0xDA, 0x23, 0xDF, 0x4A, 0xD1, 0x10,
0xEE, 0xAF, 0xE4, 0x2C, 0xEA, 0x5A, 0xDE, 0x15, 0xF4, 0x87, 0xE9, 0x21, 0xF6, 0x43, 0xFC, 0x12,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xB0, 0xC7, 0xD8, 0x33, 0xE3, 0x6B, 0xD6, 0x18, 0xE7, 0x95, 0xD8, 0x23, 0xDB, 0x49, 0xD0, 0x11,
0xE9, 0xB2, 0xE2, 0x2B, 0xE8, 0x5C, 0xDD, 0x15, 0xF1, 0x87, 0xE7, 0x20, 0xF7, 0x44, 0xFF, 0x13,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x5F, 0x9E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00
};
static unsigned char * WeightTables[0x09] =
{
ByteToWeight_00,
ByteToWeight_01,
ByteToWeight_02,
ByteToWeight_03,
ByteToWeight_04,
ByteToWeight_05,
ByteToWeight_06,
ByteToWeight_07,
ByteToWeight_08
};
//-----------------------------------------------------------------------------
// Debug/diagnostics
#ifdef _DEBUG
void DumpHuffmannTree(THTreeItem * pItem)
{
THTreeItem * pChildLo; // Item with the lower weight
THTreeItem * pChildHi; // Item with the higher weight
// Get the lower-weight branch
pChildLo = pItem->pChildLo;
if(pChildLo != NULL)
{
// Get the higher-weight branch
pChildHi = pChildLo->pPrev;
// Parse the lower-weight branch
DumpHuffmannTree(pChildHi);
DumpHuffmannTree(pChildLo);
}
}
#endif
//-----------------------------------------------------------------------------
// TInputStream functions
TInputStream::TInputStream(void * pvInBuffer, size_t cbInBuffer)
{
pbInBufferEnd = (unsigned char *)pvInBuffer + cbInBuffer;
pbInBuffer = (unsigned char *)pvInBuffer;
BitBuffer = 0;
BitCount = 0;
}
// Gets 7 bits from the stream. DOES NOT remove the bits from input stream
unsigned int TInputStream::Peek7Bits()
{
unsigned int dwReloadByte = 0;
// If there is not enough bits to get the value,
// we have to add 8 more bits from the input buffer
if(BitCount < 7)
{
dwReloadByte = *pbInBuffer++;
BitBuffer |= dwReloadByte << BitCount;
BitCount += 8;
}
// Return the first available 7 bits. DO NOT remove them from the input stream
return (BitBuffer & 0x7F);
}
// Gets one bit from input stream
unsigned int TInputStream::Get1Bit()
{
unsigned int OneBit = 0;
// Ensure that the input stream is reloaded, if there are no bits left
if(BitCount == 0)
{
// Refill the bit buffer
BitBuffer = *pbInBuffer++;
BitCount = 8;
}
// Copy the bit from bit buffer to the variable
OneBit = (BitBuffer & 0x01);
BitBuffer >>= 1;
BitCount--;
return OneBit;
}
// Gets the whole byte from the input stream.
unsigned int TInputStream::Get8Bits()
{
unsigned int dwReloadByte = 0;
unsigned int dwOneByte = 0;
// If there is not enough bits to get the value,
// we have to add 8 more bits from the input buffer
if(BitCount < 8)
{
dwReloadByte = *pbInBuffer++;
BitBuffer |= dwReloadByte << BitCount;
BitCount += 8;
}
// Return the lowest 8 its
dwOneByte = (BitBuffer & 0xFF);
BitBuffer >>= 8;
BitCount -= 8;
return dwOneByte;
}
void TInputStream::SkipBits(unsigned int dwBitsToSkip)
{
unsigned int dwReloadByte = 0;
// If there is not enough bits in the buffer,
// we have to add 8 more bits from the input buffer
if(BitCount < dwBitsToSkip)
{
dwReloadByte = *pbInBuffer++;
BitBuffer |= dwReloadByte << BitCount;
BitCount += 8;
}
// Skip the remaining bits
BitBuffer >>= dwBitsToSkip;
BitCount -= dwBitsToSkip;
}
//-----------------------------------------------------------------------------
// TOutputStream functions
TOutputStream::TOutputStream(void * pvOutBuffer, size_t cbOutLength)
{
pbOutBufferEnd = (unsigned char *)pvOutBuffer + cbOutLength;
pbOutBuffer = (unsigned char *)pvOutBuffer;
BitBuffer = 0;
BitCount = 0;
}
void TOutputStream::PutBits(unsigned int dwValue, unsigned int nBitCount)
{
BitBuffer |= (dwValue << BitCount);
BitCount += nBitCount;
// Flush completed bytes
while(BitCount >= 8)
{
if(pbOutBuffer < pbOutBufferEnd)
*pbOutBuffer++ = (unsigned char)BitBuffer;
BitBuffer >>= 8;
BitCount -= 8;
}
}
void TOutputStream::Flush()
{
while(BitCount != 0)
{
if(pbOutBuffer < pbOutBufferEnd)
*pbOutBuffer++ = (unsigned char)BitBuffer;
BitBuffer >>= 8;
BitCount -= ((BitCount > 8) ? 8 : BitCount);
}
}
//-----------------------------------------------------------------------------
// Methods of the THTreeItem struct
void THTreeItem::RemoveItem()
{
if(pNext != NULL)
{
pPrev->pNext = pNext;
pNext->pPrev = pPrev;
pNext = pPrev = NULL;
}
}
//-----------------------------------------------------------------------------
// THuffmannTree class functions
THuffmannTree::THuffmannTree(bool bCompression)
{
pFirst = pLast = LIST_HEAD();
MinValidValue = 1;
ItemsUsed = 0;
bIsCmp0 = 0;
memset(ItemsByByte, 0, sizeof(ItemsByByte));
// If we are going to decompress data, we need to invalidate all item links
// We do so by zeroing their ValidValue, so it becomes lower MinValidValue
if(bCompression == false)
{
memset(QuickLinks, 0, sizeof(QuickLinks));
}
}
THuffmannTree::~THuffmannTree()
{
// Our Huffmann tree does not use any memory allocations,
// so we don't need to do eny code in the destructor
}
void THuffmannTree::LinkTwoItems(THTreeItem * pItem1, THTreeItem * pItem2)
{
pItem2->pNext = pItem1->pNext;
pItem2->pPrev = pItem1->pNext->pPrev;
pItem1->pNext->pPrev = pItem2;
pItem1->pNext = pItem2;
}
// Inserts item into the tree (?)
void THuffmannTree::InsertItem(THTreeItem * pNewItem, TInsertPoint InsertPoint, THTreeItem * pInsertPoint)
{
// Remove the item from the tree
pNewItem->RemoveItem();
if(pInsertPoint == NULL)
pInsertPoint = LIST_HEAD();
switch(InsertPoint)
{
case InsertAfter:
LinkTwoItems(pInsertPoint, pNewItem);
return;
case InsertBefore:
pNewItem->pNext = pInsertPoint; // Set next item (or pointer to pointer to first item)
pNewItem->pPrev = pInsertPoint->pPrev; // Set prev item (or last item in the tree)
pInsertPoint->pPrev->pNext = pNewItem;
pInsertPoint->pPrev = pNewItem; // Set the next/last item
return;
}
}
THTreeItem * THuffmannTree::FindHigherOrEqualItem(THTreeItem * pItem, unsigned int Weight)
{
// Parse all existing items
if(pItem != NULL)
{
while(pItem != LIST_HEAD())
{
if(pItem->Weight >= Weight)
return pItem;
pItem = pItem->pPrev;
}
}
// If not found, we just get the first item
return LIST_HEAD();
}
THTreeItem * THuffmannTree::CreateNewItem(unsigned int DecompressedValue, unsigned int Weight, TInsertPoint InsertPoint)
{
THTreeItem * pNewItem = NULL;
// Don't let the item buffer run out of space
if(ItemsUsed < HUFF_ITEM_COUNT)
{
// Allocate new item from the item pool
pNewItem = &ItemBuffer[ItemsUsed++];
// Insert this item to the top of the tree
InsertItem(pNewItem, InsertPoint, NULL);
// Fill the rest of the item
pNewItem->DecompressedValue = DecompressedValue;
pNewItem->Weight = Weight;
pNewItem->pParent = NULL;
pNewItem->pChildLo = NULL;
}
return pNewItem;
}
unsigned int THuffmannTree::FixupItemPosByWeight(THTreeItem * pNewItem, unsigned int MaxWeight)
{
THTreeItem * pHigherItem;
if(pNewItem->Weight < MaxWeight)
{
// Find an item that has higher weight than this one
pHigherItem = FindHigherOrEqualItem(pLast, pNewItem->Weight);
// Remove the item and put it to the new position
pNewItem->RemoveItem();
LinkTwoItems(pHigherItem, pNewItem);
}
else
{
MaxWeight = pNewItem->Weight;
}
// Return the (updated) maximum weight
return MaxWeight;
}
// Builds Huffman tree. Called with the first 8 bits loaded from input stream
bool THuffmannTree::BuildTree(unsigned int CompressionType)
{
THTreeItem * pNewItem;
THTreeItem * pChildLo;
THTreeItem * pChildHi;
unsigned char * WeightTable;
unsigned int MaxWeight; // [ESP+10] - The greatest character found in table
// Clear all pointers in HTree item array
memset(ItemsByByte, 0, sizeof(ItemsByByte));
MaxWeight = 0;
// Ensure that the compression type is in range
if((CompressionType & 0x0F) > 0x08)
return false;
WeightTable = WeightTables[CompressionType & 0x0F];
// Build the linear list of entries that is sorted by byte weight
for(unsigned int i = 0; i < 0x100; i++)
{
// Skip all the bytes which are zero.
if(WeightTable[i] != 0)
{
// Create new tree item
ItemsByByte[i] = pNewItem = CreateNewItem(i, WeightTable[i], InsertAfter);
// We need to put the item to the right place in the list
MaxWeight = FixupItemPosByWeight(pNewItem, MaxWeight);
}
}
// Insert termination entries at the end of the list
ItemsByByte[0x100] = CreateNewItem(0x100, 1, InsertBefore);
ItemsByByte[0x101] = CreateNewItem(0x101, 1, InsertBefore);
// Now we need to build the tree. We start at the last entry
// and go backwards to the first one
pChildLo = pLast;
// Work as long as both children are valid
// pChildHi is child with higher weight, pChildLo is the one with lower weight
while(pChildLo != LIST_HEAD())
{
// Also get and verify the higher-weight child
pChildHi = pChildLo->pPrev;
if(pChildHi == LIST_HEAD())
break;
// Create new parent item for the children
pNewItem = CreateNewItem(0, pChildHi->Weight + pChildLo->Weight, InsertAfter);
if(pNewItem == NULL)
return false;
// Link both child items to their new parent
pChildLo->pParent = pNewItem;
pChildHi->pParent = pNewItem;
pNewItem->pChildLo = pChildLo;
// Fixup the item's position by its weight
MaxWeight = FixupItemPosByWeight(pNewItem, MaxWeight);
// Get the previous lower-weight child
pChildLo = pChildHi->pPrev;
}
// Initialize the MinValidValue to 1, which invalidates all quick-link items
MinValidValue = 1;
return true;
}
void THuffmannTree::IncWeightsAndRebalance(THTreeItem * pItem)
{
THTreeItem * pHigherItem; // A previous item with greater or equal weight
THTreeItem * pChildHi; // The higher-weight child
THTreeItem * pChildLo; // The lower-weight child
THTreeItem * pParent;
// Climb up the tree and increment weight of each tree item
for(; pItem != NULL; pItem = pItem->pParent)
{
// Increment the item's weight
pItem->Weight++;
// Find a previous item with equal or greater weight, which is not equal to this item
pHigherItem = FindHigherOrEqualItem(pItem->pPrev, pItem->Weight);
pChildHi = pHigherItem->pNext;
// If the item is not equal to the tree item, we need to rebalance the tree
if(pChildHi != pItem)
{
// Move the previous item to the RIGHT from the given item
pChildHi->RemoveItem();
LinkTwoItems(pItem, pChildHi);
// Move the given item AFTER the greater-weight tree item
pItem->RemoveItem();
LinkTwoItems(pHigherItem, pItem);
// We need to maintain the tree so that pChildHi->Weight is >= pChildLo->Weight.
// Rebalance the tree accordingly.
pChildLo = pChildHi->pParent->pChildLo;
pParent = pItem->pParent;
if(pParent->pChildLo == pItem)
pParent->pChildLo = pChildHi;
if(pChildLo == pChildHi)
pChildHi->pParent->pChildLo = pItem;
pParent = pItem->pParent;
pItem->pParent = pChildHi->pParent;
pChildHi->pParent = pParent;
// Increment the global valid value. This invalidates all quick-link items.
MinValidValue++;
}
}
}
bool THuffmannTree::InsertNewBranchAndRebalance(unsigned int Value1, unsigned int Value2)
{
THTreeItem * pLastItem = pLast;
THTreeItem * pChildHi;
THTreeItem * pChildLo;
// Create higher-weight child
pChildHi = CreateNewItem(Value1, pLastItem->Weight, InsertBefore);
if(pChildHi != NULL)
{
pChildHi->pParent = pLastItem;
ItemsByByte[Value1] = pChildHi;
// Create lower-weight child
pChildLo = CreateNewItem(Value2, 0, InsertBefore);
if(pChildLo != NULL)
{
pChildLo->pParent = pLastItem;
pLastItem->pChildLo = pChildLo;
ItemsByByte[Value2] = pChildLo;
IncWeightsAndRebalance(pChildLo);
return true;
}
}
// No more space in the tree buffer
return false;
}
void THuffmannTree::EncodeOneByte(TOutputStream * os, THTreeItem * pItem)
{
THTreeItem * pParent = pItem->pParent;
unsigned int BitBuffer = 0;
unsigned int BitCount = 0;
// Put 1's as long as there is parent
while(pParent != NULL)
{
// Fill the bit buffer
BitBuffer = (BitBuffer << 1) | ((pParent->pChildLo != pItem) ? 1 : 0);
BitCount++;
// Move to the parent
pItem = pParent;
pParent = pParent->pParent;
}
// Write the bits to the output stream
os->PutBits(BitBuffer, BitCount);
}
unsigned int THuffmannTree::DecodeOneByte(TInputStream * is)
{
THTreeItem * pItemLink = NULL;
THTreeItem * pItem;
unsigned int ItemLinkIndex;
unsigned int BitCount = 0;
// Check for the end of the input stream
if(is->pbInBuffer >= is->pbInBufferEnd && is->BitCount < 7)
return 0x1FF;
// Get the eventual quick-link index
ItemLinkIndex = is->Peek7Bits();
// Is the quick-link item valid?
if(QuickLinks[ItemLinkIndex].ValidValue > MinValidValue)
{
// If that item needs less than 7 bits, we can get decompressed value directly
if(QuickLinks[ItemLinkIndex].ValidBits <= 7)
{
is->SkipBits(QuickLinks[ItemLinkIndex].ValidBits);
return QuickLinks[ItemLinkIndex].DecompressedValue;
}
// Otherwise we cannot get decompressed value directly
// but we can skip 7 levels of tree parsing
pItem = QuickLinks[ItemLinkIndex].pItem;
is->SkipBits(7);
}
else
{
// Just a sanity check
if(pFirst == LIST_HEAD())
return 0x1FF;
// We don't have the quick-link item, we need to parse the tree from its root
pItem = pFirst;
}
// Step down the tree until we find a terminal item
while(pItem->pChildLo != NULL)
{
// If the next bit in the compressed stream is set, we get the higher-weight
// child. Otherwise, get the lower-weight child.
pItem = is->Get1Bit() ? pItem->pChildLo->pPrev : pItem->pChildLo;
BitCount++;
// If the number of loaded bits reached 7,
// remember the current item for storing into quick-link item array
if(BitCount == 7)
pItemLink = pItem;
}
// If we didn't get the item from the quick-link array,
// set the entry in it
if(QuickLinks[ItemLinkIndex].ValidValue < MinValidValue)
{
// If the current compressed byte was more than 7 bits,
// set a quick-link item with pointer to tree item
if(BitCount > 7)
{
QuickLinks[ItemLinkIndex].ValidValue = MinValidValue;
QuickLinks[ItemLinkIndex].ValidBits = BitCount;
QuickLinks[ItemLinkIndex].pItem = pItemLink;
}
else
{
// Limit the quick-decompress item to lower amount of bits
// Coverity fix 84457: (x >> 32) has undefined behavior
ItemLinkIndex = (BitCount != 0) ? ItemLinkIndex & (0xFFFFFFFF >> (32 - BitCount)) : 0;
while(ItemLinkIndex < LINK_ITEM_COUNT)
{
// Fill the quick-decompress item
QuickLinks[ItemLinkIndex].ValidValue = MinValidValue;
QuickLinks[ItemLinkIndex].ValidBits = BitCount;
QuickLinks[ItemLinkIndex].DecompressedValue = pItem->DecompressedValue;
// Increment the index
ItemLinkIndex += (1 << BitCount);
}
}
}
// Return the decompressed value from the found item
return pItem->DecompressedValue;
}
unsigned int THuffmannTree::Compress(TOutputStream * os, void * pvInBuffer, int cbInBuffer, int CompressionType)
{
unsigned char * pbInBufferEnd = (unsigned char *)pvInBuffer + cbInBuffer;
unsigned char * pbInBuffer = (unsigned char *)pvInBuffer;
unsigned char * pbOutBuff = os->pbOutBuffer;
unsigned char InputByte;
if(!BuildTree(CompressionType))
return 0;
bIsCmp0 = (CompressionType == 0);
// Store the compression type into output buffer
os->PutBits(CompressionType, 8);
// Process the entire input buffer
while(pbInBuffer < pbInBufferEnd)
{
// Get the (next) byte from the input buffer
InputByte = *pbInBuffer++;
// Do we have an item for such input value?
if(ItemsByByte[InputByte] == NULL)
{
// Encode the relationship
EncodeOneByte(os, ItemsByByte[0x101]);
// Store the loaded byte into output stream
os->PutBits(InputByte, 8);
if(!InsertNewBranchAndRebalance(pLast->DecompressedValue, InputByte))
return 0;
if(bIsCmp0)
{
IncWeightsAndRebalance(ItemsByByte[InputByte]);
continue;
}
IncWeightsAndRebalance(ItemsByByte[InputByte]);
}
else
{
EncodeOneByte(os, ItemsByByte[InputByte]);
}
if(bIsCmp0)
{
IncWeightsAndRebalance(ItemsByByte[InputByte]);
}
}
// Put the termination mark to the compressed stream
EncodeOneByte(os, ItemsByByte[0x100]);
// Flush the remaining bits
os->Flush();
return (unsigned int)(os->pbOutBuffer - pbOutBuff);
}
// Decompression using Huffman tree (1500E450)
unsigned int THuffmannTree::Decompress(void * pvOutBuffer, unsigned int cbOutLength, TInputStream * is)
{
unsigned char * pbOutBufferEnd = (unsigned char *)pvOutBuffer + cbOutLength;
unsigned char * pbOutBuffer = (unsigned char *)pvOutBuffer;
unsigned int DecompressedValue = 0;
unsigned int CompressionType = 0;
// Test the output length. Must not be NULL.
if(cbOutLength == 0)
return 0;
// Get the compression type from the input stream
CompressionType = is->Get8Bits();
bIsCmp0 = (CompressionType == 0) ? 1 : 0;
// Build the Huffman tree
if(!BuildTree(CompressionType))
return 0;
// Process the entire input buffer until end of the stream
while((DecompressedValue = DecodeOneByte(is)) != 0x100)
{
// Did an error occur?
if(DecompressedValue == 0x1FF) // An error occurred
return 0;
// Huffman tree needs to be modified
if(DecompressedValue == 0x101)
{
// The decompressed byte is stored in the next 8 bits
DecompressedValue = is->Get8Bits();
if(!InsertNewBranchAndRebalance(pLast->DecompressedValue, DecompressedValue))
return 0;
if(bIsCmp0 == 0)
IncWeightsAndRebalance(ItemsByByte[DecompressedValue]);
}
// A byte successfully decoded - store it in the output stream
*pbOutBuffer++ = (unsigned char)DecompressedValue;
if(pbOutBuffer >= pbOutBufferEnd)
break;
if(bIsCmp0)
{
IncWeightsAndRebalance(ItemsByByte[DecompressedValue]);
}
}
return (unsigned int)(pbOutBuffer - (unsigned char *)pvOutBuffer);
}
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