diff options
author | Ladislav Zezula <ladislav.zezula@avg.com> | 2013-01-11 14:55:08 +0100 |
---|---|---|
committer | Ladislav Zezula <ladislav.zezula@avg.com> | 2013-01-11 14:55:08 +0100 |
commit | 3a926f0228c68d7d91cf3946624d7859976440ec (patch) | |
tree | c4e7d36dc8157576929988cdfcf5bfd8262cd09c /src/huffman | |
parent | df4b0c085478389c9a21a09521d46735a0109c8a (diff) |
Initial creation
Diffstat (limited to 'src/huffman')
-rw-r--r-- | src/huffman/HuffTree.xls | bin | 0 -> 361472 bytes | |||
-rw-r--r-- | src/huffman/huff.cpp | 869 | ||||
-rw-r--r-- | src/huffman/huff.h | 143 | ||||
-rw-r--r-- | src/huffman/huff_old.cpp | 1303 | ||||
-rw-r--r-- | src/huffman/huff_old.h | 142 |
5 files changed, 2457 insertions, 0 deletions
diff --git a/src/huffman/HuffTree.xls b/src/huffman/HuffTree.xls Binary files differnew file mode 100644 index 0000000..68e0664 --- /dev/null +++ b/src/huffman/HuffTree.xls diff --git a/src/huffman/huff.cpp b/src/huffman/huff.cpp new file mode 100644 index 0000000..cf5ae05 --- /dev/null +++ b/src/huffman/huff.cpp @@ -0,0 +1,869 @@ +/*****************************************************************************/ +/* 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 "../StormPort.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) +{ + // TODO: Obsolete, delete this!! +// InitializeHTListHead(&ItemLinks); + pFirst = pLast = LIST_HEAD(); + + MinValidValue = 1; + ItemsUsed = 0; + + // 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; + + // 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 +void 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 + assert((CompressionType & 0x0F) <= 0x08); + 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); + + // 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; +} + +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++; + } + } +} + +void 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); + pChildHi->pParent = pLastItem; + ItemsByByte[Value1] = pChildHi; + + // Create lower-weight child + pChildLo = CreateNewItem(Value2, 0, InsertBefore); + pChildLo->pParent = pLastItem; + pLastItem->pChildLo = pChildLo; + ItemsByByte[Value2] = pChildLo; + + IncWeightsAndRebalance(pChildLo); +} + +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 + ItemLinkIndex &= (0xFFFFFFFF >> (32 - BitCount)); + 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; + + BuildTree(CompressionType); + 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); + + InsertNewBranchAndRebalance(pLast->DecompressedValue, InputByte); + + 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 + BuildTree(CompressionType); + + // 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(); + + InsertNewBranchAndRebalance(pLast->DecompressedValue, DecompressedValue); + + 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); +} + diff --git a/src/huffman/huff.h b/src/huffman/huff.h new file mode 100644 index 0000000..b0a54ee --- /dev/null +++ b/src/huffman/huff.h @@ -0,0 +1,143 @@ +/*****************************************************************************/ +/* huffman.h Copyright (c) Ladislav Zezula 2003 */ +/*---------------------------------------------------------------------------*/ +/* Description : */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* xx.xx.xx 1.00 Lad The first version of huffman.h */ +/* 03.05.03 2.00 Lad Added compression */ +/* 08.12.03 2.01 Dan High-memory handling (> 0x80000000) */ +/*****************************************************************************/ + +#ifndef __HUFFMAN_H__ +#define __HUFFMAN_H__ + +//----------------------------------------------------------------------------- +// Defines + +#define HUFF_ITEM_COUNT 0x203 // Number of items in the item pool +#define LINK_ITEM_COUNT 0x80 // Maximum number of quick-link items + +//----------------------------------------------------------------------------- +// Structures and classes + +// Input stream for Huffmann decompression +class TInputStream +{ + public: + + TInputStream(void * pvInBuffer, size_t cbInBuffer); + unsigned int Get1Bit(); + unsigned int Peek7Bits(); + unsigned int Get8Bits(); + void SkipBits(unsigned int BitCount); + + unsigned char * pbInBufferEnd; // End position in the the input buffer + unsigned char * pbInBuffer; // Current position in the the input buffer + unsigned int BitBuffer; // Input bit buffer + unsigned int BitCount; // Number of bits remaining in 'dwBitBuff' +}; + + +// Output stream for Huffmann compression +class TOutputStream +{ + public: + + TOutputStream(void * pvOutBuffer, size_t cbOutLength); + void PutBits(unsigned int dwValue, unsigned int nBitCount); + void Flush(); + + unsigned char * pbOutBufferEnd; // End position in the output buffer + unsigned char * pbOutBuffer; // Current position in the output buffer + unsigned int BitBuffer; // Bit buffer + unsigned int BitCount; // Number of bits in the bit buffer +}; + +// A virtual tree item that represents the head of the item list +#define LIST_HEAD() ((THTreeItem *)(&pFirst)) + +enum TInsertPoint +{ + InsertAfter = 1, + InsertBefore = 2 +}; + +// Huffmann tree item +struct THTreeItem +{ + THTreeItem() { pPrev = pNext = NULL;} +// ~THTreeItem() { RemoveItem(); } + + void RemoveItem(); +// void RemoveEntry(); + + THTreeItem * pNext; // Pointer to lower-weight tree item + THTreeItem * pPrev; // Pointer to higher-weight item + unsigned int DecompressedValue; // 08 - Decompressed byte value (also index in the array) + unsigned int Weight; // 0C - Weight + THTreeItem * pParent; // 10 - Pointer to parent item (NULL if none) + THTreeItem * pChildLo; // 14 - Pointer to the child with lower-weight child ("left child") +}; + + +// Structure used for quick navigating in the huffmann tree. +// Allows skipping up to 7 bits in the compressed stream, thus +// decompressing a bit faster. Sometimes it can even get the decompressed +// byte directly. +struct TQuickLink +{ + unsigned int ValidValue; // If greater than THuffmannTree::MinValidValue, the entry is valid + unsigned int ValidBits; // Number of bits that are valid for this item link + union + { + THTreeItem * pItem; // Pointer to the item within the Huffmann tree + unsigned int DecompressedValue; // Value for direct decompression + }; +}; + + +// Structure for Huffman tree (Size 0x3674 bytes). Because I'm not expert +// for the decompression, I do not know actually if the class is really a Hufmann +// tree. If someone knows the decompression details, please let me know +class THuffmannTree +{ + public: + + THuffmannTree(bool bCompression); + ~THuffmannTree(); + + void LinkTwoItems(THTreeItem * pItem1, THTreeItem * pItem2); + void InsertItem(THTreeItem * item, TInsertPoint InsertPoint, THTreeItem * item2); + + THTreeItem * FindHigherOrEqualItem(THTreeItem * pItem, unsigned int Weight); + THTreeItem * CreateNewItem(unsigned int DecompressedValue, unsigned int Weight, TInsertPoint InsertPoint); + + unsigned int FixupItemPosByWeight(THTreeItem * pItem, unsigned int MaxWeight); + void BuildTree(unsigned int CompressionType); + + void IncWeightsAndRebalance(THTreeItem * pItem); + void InsertNewBranchAndRebalance(unsigned int Value1, unsigned int Value2); + + void EncodeOneByte(TOutputStream * os, THTreeItem * pItem); + unsigned int DecodeOneByte(TInputStream * is); + + unsigned int Compress(TOutputStream * os, void * pvInBuffer, int cbInBuffer, int nCmpType); + unsigned int Decompress(void * pvOutBuffer, unsigned int cbOutLength, TInputStream * is); + + THTreeItem ItemBuffer[HUFF_ITEM_COUNT]; // Buffer for tree items. No memory allocation is needed + unsigned int ItemsUsed; // Number of tree items used from ItemBuffer + + // Head of the linear item list + THTreeItem * pFirst; // Pointer to the highest weight item + THTreeItem * pLast; // Pointer to the lowest weight item + + THTreeItem * ItemsByByte[0x102]; // Array of item pointers, one for each possible byte value + TQuickLink QuickLinks[LINK_ITEM_COUNT]; // Array of quick-link items + + unsigned int MinValidValue; // A minimum value of TQDecompress::ValidValue to be considered valid + unsigned int bIsCmp0; // 1 if compression type 0 +}; + +#endif // __HUFFMAN_H__ diff --git a/src/huffman/huff_old.cpp b/src/huffman/huff_old.cpp new file mode 100644 index 0000000..66a46b3 --- /dev/null +++ b/src/huffman/huff_old.cpp @@ -0,0 +1,1303 @@ +/*****************************************************************************/ +/* 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) */ +/*****************************************************************************/ + +#include <assert.h> +#include <string.h> + +#include "huff.h" + +// Special for Mac - we have to know if normal pointer greater or less +// than 0x80000000. This variable is used in the PTR_VALID and PTR_INVALID +// macros +static long mul = 1; + +#define PTR_VALID(ptr) (((LONG_PTR)(ptr) * mul) > 0) +#define PTR_INVALID(ptr) (((LONG_PTR)(ptr) * mul) < 0) +#define PTR_INVALID_OR_NULL(ptr) (((LONG_PTR)(ptr) * mul) <= 0) + + +//----------------------------------------------------------------------------- +// Methods of the THTreeItem struct + +// 1501DB70 +THTreeItem * THTreeItem::Call1501DB70(THTreeItem * pLast) +{ + if(pLast == NULL) + pLast = this + 1; + return pLast; +} + +// Gets previous Huffman tree item (?) +THTreeItem * THTreeItem::GetPrevItem(LONG_PTR value) +{ + if(PTR_INVALID(prev)) + return PTR_NOT(prev); + + if(value == -1 || PTR_INVALID(value)) + value = (LONG_PTR)(this - next->prev); + return prev + value; + +// OLD VERSION +// if(PTR_INT(value) < 0) +// value = PTR_INT((item - item->next->prev)); +// return (THTreeItem *)((char *)prev + value); +} + +// 1500F5E0 +void THTreeItem::ClearItemLinks() +{ + next = prev = NULL; +} + +// 1500BC90 +void THTreeItem::RemoveItem() +{ + THTreeItem * pTemp; // EDX + + if(next != NULL) + { + pTemp = prev; + + if(PTR_INVALID_OR_NULL(pTemp)) + pTemp = PTR_NOT(pTemp); + else + pTemp += (this - next->prev); + + pTemp->next = next; + next->prev = prev; + next = prev = NULL; + } +} + +/* +// OLD VERSION : Removes item from the tree (?) +static void RemoveItem(THTreeItem * item) +{ + THTreeItem * next = item->next; // ESI + THTreeItem * prev = item->prev; // EDX + + if(next == NULL) + return; + + if(PTR_INT(prev) < 0) + prev = PTR_NOT(prev); + else + // ??? usually item == next->prev, so what is it ? + prev = (THTreeItem *)((unsigned char *)prev + (unsigned long)((unsigned char *)item - (unsigned char *)(next->prev))); + + // Remove HTree item from the chain + prev->next = next; // Sets the 'first' pointer + next->prev = item->prev; + + // Invalidate pointers + item->next = NULL; + item->prev = NULL; +} +*/ + +//----------------------------------------------------------------------------- +// TOutputStream functions + +void TOutputStream::PutBits(unsigned long dwBuff, unsigned int nPutBits) +{ + dwBitBuff |= (dwBuff << nBits); + nBits += nPutBits; + + // Flush completed bytes + while(nBits >= 8) + { + if(cbOutSize != 0) + { + *pbOutPos++ = (unsigned char)dwBitBuff; + cbOutSize--; + } + + dwBitBuff >>= 8; + nBits -= 8; + } +} + +//----------------------------------------------------------------------------- +// TInputStream functions + +// Gets one bit from input stream +unsigned long TInputStream::GetBit() +{ + unsigned long dwOneBit = 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 + dwOneBit = (BitBuffer & 0x01); + BitBuffer >>= 1; + BitCount--; + + return dwOneBit; +} + +// Gets 7 bits from the stream. DOES NOT remove the bits from input stream +unsigned long TInputStream::Get7Bits() +{ + unsigned long 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 the whole byte from the input stream. +unsigned long TInputStream::Get8Bits() +{ + unsigned long dwReloadByte = 0; + unsigned long 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 long 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; +} + +//----------------------------------------------------------------------------- +// Functions for huffmann tree items + +// Inserts item into the tree (?) +static void InsertItem(THTreeItem ** itemPtr, THTreeItem * item, unsigned long nWhere, THTreeItem * item2) +{ + THTreeItem * next = item->next; // EDI - next to the first item + THTreeItem * prev = item->prev; // ESI - prev to the first item + THTreeItem * prev2; // Pointer to previous item + LONG_PTR next2; // Pointer to the next item + + // The same code like in RemoveItem(item); + if(next != 0) // If the first item already has next one + { + if(PTR_INVALID(prev)) + prev = PTR_NOT(prev); + else + prev += (item - next->prev); + + // 150083C1 + // Remove the item from the tree + prev->next = next; + next->prev = prev; + + // Invalidate 'prev' and 'next' pointer + item->next = 0; + item->prev = 0; + } + + if(item2 == NULL) // EDX - If the second item is not entered, + item2 = PTR_PTR(&itemPtr[1]); // take the first tree item + + switch(nWhere) + { + case SWITCH_ITEMS : // Switch the two items + item->next = item2->next; // item2->next (Pointer to pointer to first) + item->prev = item2->next->prev; + item2->next->prev = item; + item2->next = item; // Set the first item + return; + + case INSERT_ITEM: // Insert as the last item + item->next = item2; // Set next item (or pointer to pointer to first item) + item->prev = item2->prev; // Set prev item (or last item in the tree) + + next2 = PTR_INT(itemPtr[0]);// Usually NULL + prev2 = item2->prev; // Prev item to the second (or last tree item) + + if(PTR_INVALID(prev2)) + { + if(prev != NULL) + { + prev2 = PTR_NOT(prev); + if(prev2 != NULL) + { + prev2->next = item; + item2->prev = item; // Next after last item + } + } + return; + } + + if(PTR_INVALID(next2)) + next2 = (LONG_PTR)(item2 - item2->next->prev); +// next2 = (THTreeItem *)(unsigned long)((unsigned char *)item2 - (unsigned char *)(item2->next->prev)); + +// prev2 = (THTreeItem *)((char *)prev2 + (unsigned long)next2);// ??? + prev2 += next2; + prev2->next = item; + item2->prev = item; // Set the next/last item + return; + + default: + return; + } +} + +//----------------------------------------------------------------------------- +// THuffmannTree class functions + +THuffmannTree::THuffmannTree() +{ + // We have to check if the "this" pointer is less than zero + if((LONG_PTR)this < 0) + mul = -1; +} + +void THuffmannTree::InitTree(bool bCompression) +{ + THTreeItem * pItem; + unsigned int nCount; + + // Clear links for all the items in the tree + for(pItem = items0008, nCount = 0x203; nCount != 0; pItem++, nCount--) + pItem->ClearItemLinks(); + + pItem3050 = NULL; + pItem3054 = PTR_PTR(&pItem3054); + pItem3058 = PTR_NOT(pItem3054); + + pItem305C = NULL; + pFirst = PTR_PTR(&pFirst); + pLast = PTR_NOT(pFirst); + + offs0004 = 1; + nItems = 0; + + // Clear all TQDecompress items. Do this only if preparing for decompression + if(bCompression == false) + { + for(nCount = 0; nCount < sizeof(qd3474) / sizeof(TQDecompress); nCount++) + qd3474[nCount].offs00 = 0; + } +} + +// Builds Huffman tree. Called with the first 8 bits loaded from input stream +void THuffmannTree::BuildTree(unsigned int nCmpType) +{ + unsigned long maxByte; // [ESP+10] - The greatest character found in table + THTreeItem ** itemPtr; // [ESP+14] - Pointer to Huffman tree item pointer array + unsigned char * byteArray; // [ESP+1C] - Pointer to unsigned char in Table1502A630 + THTreeItem * child1; + unsigned long i; // egcs in linux doesn't like multiple for loops without an explicit i + + // Loop while pointer has a valid value + while(PTR_VALID(pLast)) // ESI - Last entry + { + THTreeItem * temp; // EAX + + if(pLast->next != NULL) // ESI->next + pLast->RemoveItem(); + // EDI = &offs3054 + pItem3058 = PTR_PTR(&pItem3054); // [EDI+4] + pLast->prev = pItem3058; // EAX + + temp = PTR_PTR(&pItem3054)->GetPrevItem(PTR_INT(&pItem3050)); + + temp->next = pLast; + pItem3054 = pLast; + } + + // Clear all pointers in HTree item array + memset(items306C, 0, sizeof(items306C)); + + maxByte = 0; // Greatest character found init to zero. + itemPtr = (THTreeItem **)&items306C; // Pointer to current entry in HTree item pointer array + + // Ensure we have low 8 bits only + nCmpType &= 0xFF; + byteArray = Table1502A630 + nCmpType * 258; // EDI also + + for(i = 0; i < 0x100; i++, itemPtr++) + { + THTreeItem * item = pItem3058; // Item to be created + THTreeItem * pItem3 = pItem3058; + unsigned char oneByte = byteArray[i]; + + // Skip all the bytes which are zero. + if(byteArray[i] == 0) + continue; + + // If not valid pointer, take the first available item in the array + if(PTR_INVALID_OR_NULL(item)) + item = &items0008[nItems++]; + + // Insert this item as the top of the tree + InsertItem(&pItem305C, item, SWITCH_ITEMS, NULL); + + item->parent = NULL; // Invalidate child and parent + item->child = NULL; + *itemPtr = item; // Store pointer into pointer array + + item->dcmpByte = i; // Store counter + item->byteValue = oneByte; // Store byte value + if(oneByte >= maxByte) + { + maxByte = oneByte; + continue; + } + + // Find the first item which has byte value greater than current one byte + if(PTR_VALID(pItem3 = pLast)) // EDI - Pointer to the last item + { + // 15006AF7 + if(pItem3 != NULL) + { + do // 15006AFB + { + if(pItem3->byteValue >= oneByte) + goto _15006B09; + pItem3 = pItem3->prev; + } + while(PTR_VALID(pItem3)); + } + } + pItem3 = NULL; + + // 15006B09 + _15006B09: + if(item->next != NULL) + item->RemoveItem(); + + // 15006B15 + if(pItem3 == NULL) + pItem3 = PTR_PTR(&pFirst); + + // 15006B1F + item->next = pItem3->next; + item->prev = pItem3->next->prev; + pItem3->next->prev = item; + pItem3->next = item; + } + + // 15006B4A + for(; i < 0x102; i++) + { + THTreeItem ** itemPtr = &items306C[i]; // EDI + + // 15006B59 + THTreeItem * item = pItem3058; // ESI + if(PTR_INVALID_OR_NULL(item)) + item = &items0008[nItems++]; + + InsertItem(&pItem305C, item, INSERT_ITEM, NULL); + + // 15006B89 + item->dcmpByte = i; + item->byteValue = 1; + item->parent = NULL; + item->child = NULL; + *itemPtr++ = item; + } + + // 15006BAA + if(PTR_VALID(child1 = pLast)) // EDI - last item (first child to item + { + THTreeItem * child2; // EBP + THTreeItem * item; // ESI + + // 15006BB8 + while(PTR_VALID(child2 = child1->prev)) + { + if(PTR_INVALID_OR_NULL(item = pItem3058)) + item = &items0008[nItems++]; + + // 15006BE3 + InsertItem(&pItem305C, item, SWITCH_ITEMS, NULL); + + // 15006BF3 + item->parent = NULL; + item->child = NULL; + + //EDX = child2->byteValue + child1->byteValue; + //EAX = child1->byteValue; + //ECX = maxByte; // The greatest character (0xFF usually) + + item->byteValue = child1->byteValue + child2->byteValue; // 0x02 + item->child = child1; // Prev item in the + child1->parent = item; + child2->parent = item; + + // EAX = item->byteValue; + if(item->byteValue >= maxByte) + maxByte = item->byteValue; + else + { + THTreeItem * pItem2 = child2->prev; // EDI + + // 15006C2D + while(PTR_VALID(pItem2)) + { + if(pItem2->byteValue >= item->byteValue) + goto _15006C3B; + pItem2 = pItem2->prev; + } + pItem2 = NULL; + + _15006C3B: + if(item->next != 0) + { + THTreeItem * temp4 = item->GetPrevItem(-1); + + temp4->next = item->next; // The first item changed + item->next->prev = item->prev; // First->prev changed to negative value + item->next = NULL; + item->prev = NULL; + } + + // 15006C62 + if(pItem2 == NULL) + pItem2 = PTR_PTR(&pFirst); + + item->next = pItem2->next; // Set item with 0x100 byte value + item->prev = pItem2->next->prev; // Set item with 0x17 byte value + pItem2->next->prev = item; // Changed prev of item with + pItem2->next = item; + } + + // 15006C7B + if(PTR_INVALID_OR_NULL(child1 = child2->prev)) + break; + } + } + // 15006C88 + offs0004 = 1; +} +/* +// Modifies Huffman tree. Adds new item and changes +void THuffmannTree::ModifyTree(unsigned long dwIndex) +{ + THTreeItem * pItem1 = pItem3058; // ESI + THTreeItem * pSaveLast = (PTR_INT(pLast) <= 0) ? NULL : pLast; // EBX + THTreeItem * temp; // EAX + + // Prepare the first item to insert to the tree + if(PTR_INT(pItem1) <= 0) + pItem1 = &items0008[nItems++]; + + // If item has any next item, remove it from the chain + if(pItem1->next != NULL) + { + THTreeItem * temp = pItem1->GetPrevItem(-1); // EAX + + temp->next = pItem1->next; + pItem1->next->prev = pItem1->prev; + pItem1->next = NULL; + pItem1->prev = NULL; + } + + pItem1->next = PTR_PTR(&pFirst); + pItem1->prev = pLast; + temp = pItem1->next->GetPrevItem(PTR_INT(pItem305C)); + + // 150068E9 + temp->next = pItem1; + pLast = pItem1; + + pItem1->parent = NULL; + pItem1->child = NULL; + + // 150068F6 + pItem1->dcmpByte = pSaveLast->dcmpByte; // Copy item index + pItem1->byteValue = pSaveLast->byteValue; // Copy item byte value + pItem1->parent = pSaveLast; // Set parent to last item + items306C[pSaveLast->dcmpByte] = pItem1; // Insert item into item pointer array + + // Prepare the second item to insert into the tree + if(PTR_INT((pItem1 = pItem3058)) <= 0) + pItem1 = &items0008[nItems++]; + + // 1500692E + if(pItem1->next != NULL) + { + temp = pItem1->GetPrevItem(-1); // EAX + + temp->next = pItem1->next; + pItem1->next->prev = pItem1->prev; + pItem1->next = NULL; + pItem1->prev = NULL; + } + // 1500694C + pItem1->next = PTR_PTR(&pFirst); + pItem1->prev = pLast; + temp = pItem1->next->GetPrevItem(PTR_INT(pItem305C)); + + // 15006968 + temp->next = pItem1; + pLast = pItem1; + + // 1500696E + pItem1->child = NULL; + pItem1->dcmpByte = dwIndex; + pItem1->byteValue = 0; + pItem1->parent = pSaveLast; + pSaveLast->child = pItem1; + items306C[dwIndex] = pItem1; + + do + { + THTreeItem * pItem2 = pItem1; + THTreeItem * pItem3; + unsigned long byteValue; + + // 15006993 + byteValue = ++pItem1->byteValue; + + // Pass through all previous which have its value greater than byteValue + while(PTR_INT((pItem3 = pItem2->prev)) > 0) // EBX + { + if(pItem3->byteValue >= byteValue) + goto _150069AE; + + pItem2 = pItem2->prev; + } + // 150069AC + pItem3 = NULL; + + _150069AE: + if(pItem2 == pItem1) + continue; + + // 150069B2 + // Switch pItem2 with item + InsertItem(&pItem305C, pItem2, SWITCH_ITEMS, pItem1); + InsertItem(&pItem305C, pItem1, SWITCH_ITEMS, pItem3); + + // 150069D0 + // Switch parents of pItem1 and pItem2 + temp = pItem2->parent->child; + if(pItem1 == pItem1->parent->child) + pItem1->parent->child = pItem2; + + if(pItem2 == temp) + pItem2->parent->child = pItem1; + + // 150069ED + // Switch parents of pItem1 and pItem3 + temp = pItem1->parent; + pItem1 ->parent = pItem2->parent; + pItem2->parent = temp; + offs0004++; + } + while(PTR_INT((pItem1 = pItem1->parent)) > 0); +} + +void THuffmannTree::UninitTree() +{ + while(PTR_INT(pLast) > 0) + { + pItem = pItem305C->Call1501DB70(pLast); + pItem->RemoveItem(); + } + + for(pItem = pFirst; PTR_INT(pItem3058) > 0; pItem = pItem3058) + pItem->RemoveItem(); + PTR_PTR(&pItem3054)->RemoveItem(); + + for(pItem = items0008 + 0x203, nCount = 0x203; nCount != 0; nCount--) + { + pItem--; + pItem->RemoveItem(); + pItem->RemoveItem(); + } +} +*/ + +THTreeItem * THuffmannTree::Call1500E740(unsigned int nValue) +{ + THTreeItem * pItem1 = pItem3058; // EDX + THTreeItem * pItem2; // EAX + THTreeItem * pNext; + THTreeItem * pPrev; + THTreeItem ** ppItem; + + if(PTR_INVALID_OR_NULL(pItem1) || (pItem2 = pItem1) == NULL) + { + if((pItem2 = &items0008[nItems++]) != NULL) + pItem1 = pItem2; + else + pItem1 = pFirst; + } + else + pItem1 = pItem2; + + pNext = pItem1->next; + if(pNext != NULL) + { + pPrev = pItem1->prev; + if(PTR_INVALID_OR_NULL(pPrev)) + pPrev = PTR_NOT(pPrev); + else + pPrev += (pItem1 - pItem1->next->prev); + + pPrev->next = pNext; + pNext->prev = pPrev; + pItem1->next = NULL; + pItem1->prev = NULL; + } + + ppItem = &pFirst; // esi + if(nValue > 1) + { + // ecx = pFirst->next; + pItem1->next = *ppItem; + pItem1->prev = (*ppItem)->prev; + + (*ppItem)->prev = pItem2; + *ppItem = pItem1; + + pItem2->parent = NULL; + pItem2->child = NULL; + } + else + { + pItem1->next = (THTreeItem *)ppItem; + pItem1->prev = ppItem[1]; + // edi = pItem305C; + pPrev = ppItem[1]; // ecx + if(PTR_INVALID_OR_NULL(pPrev)) + { + pPrev = PTR_NOT(pPrev); + pPrev->next = pItem1; + pPrev->prev = pItem2; + + pItem2->parent = NULL; + pItem2->child = NULL; + } + else + { + if(PTR_INVALID(pItem305C)) + pPrev += (THTreeItem *)ppItem - (*ppItem)->prev; + else + pPrev += PTR_INT(pItem305C); + + pPrev->next = pItem1; + ppItem[1] = pItem2; + pItem2->parent = NULL; + pItem2->child = NULL; + } + } + return pItem2; +} + +void THuffmannTree::Call1500E820(THTreeItem * pItem) +{ + THTreeItem * pItem1; // edi + THTreeItem * pItem2 = NULL; // eax + THTreeItem * pItem3; // edx + THTreeItem * pPrev; // ebx + + for(; pItem != NULL; pItem = pItem->parent) + { + pItem->byteValue++; + + for(pItem1 = pItem; ; pItem1 = pPrev) + { + pPrev = pItem1->prev; + if(PTR_INVALID_OR_NULL(pPrev)) + { + pPrev = NULL; + break; + } + + if(pPrev->byteValue >= pItem->byteValue) + break; + } + + if(pItem1 == pItem) + continue; + + if(pItem1->next != NULL) + { + pItem2 = pItem1->GetPrevItem(-1); + pItem2->next = pItem1->next; + pItem1->next->prev = pItem1->prev; + pItem1->next = NULL; + pItem1->prev = NULL; + } + + pItem2 = pItem->next; + pItem1->next = pItem2; + pItem1->prev = pItem2->prev; + pItem2->prev = pItem1; + pItem->next = pItem1; + if((pItem2 = pItem1) != NULL) + { + pItem2 = pItem->GetPrevItem(-1); + pItem2->next = pItem->next; + pItem->next->prev = pItem->prev; + pItem->next = NULL; + pItem->prev = NULL; + } + + if(pPrev == NULL) + pPrev = PTR_PTR(&pFirst); + + pItem2 = pPrev->next; + pItem->next = pItem2; + pItem->prev = pItem2->prev; + pItem2->prev = pItem; + pPrev->next = pItem; + + pItem3 = pItem1->parent->child; + pItem2 = pItem->parent; + if(pItem2->child == pItem) + pItem2->child = pItem1; + if(pItem3 == pItem1) + pItem1->parent->child = pItem; + + pItem2 = pItem->parent; + pItem->parent = pItem1->parent; + pItem1->parent = pItem2; + offs0004++; + } +} + +// 1500E920 +unsigned int THuffmannTree::DoCompression(TOutputStream * os, unsigned char * pbInBuffer, int nInLength, int nCmpType) +{ + THTreeItem * pItem1; + THTreeItem * pItem2; + THTreeItem * pItem3; + THTreeItem * pTemp; + unsigned long dwBitBuff; + unsigned int nBits; + unsigned int nBit; + + BuildTree(nCmpType); + bIsCmp0 = (nCmpType == 0); + + // Store the compression type into output buffer + os->dwBitBuff |= (nCmpType << os->nBits); + os->nBits += 8; + + // Flush completed bytes + while(os->nBits >= 8) + { + if(os->cbOutSize != 0) + { + *os->pbOutPos++ = (unsigned char)os->dwBitBuff; + os->cbOutSize--; + } + + os->dwBitBuff >>= 8; + os->nBits -= 8; + } + + for(; nInLength != 0; nInLength--) + { + unsigned char bOneByte = *pbInBuffer++; + + if((pItem1 = items306C[bOneByte]) == NULL) + { + pItem2 = items306C[0x101]; // ecx + pItem3 = pItem2->parent; // eax + dwBitBuff = 0; + nBits = 0; + + for(; pItem3 != NULL; pItem3 = pItem3->parent) + { + nBit = (pItem3->child != pItem2) ? 1 : 0; + dwBitBuff = (dwBitBuff << 1) | nBit; + nBits++; + pItem2 = pItem3; + } + os->PutBits(dwBitBuff, nBits); + + // Store the loaded byte into output stream + os->dwBitBuff |= (bOneByte << os->nBits); + os->nBits += 8; + + // Flush the whole byte(s) + while(os->nBits >= 8) + { + if(os->cbOutSize != 0) + { + *os->pbOutPos++ = (unsigned char)os->dwBitBuff; + os->cbOutSize--; + } + os->dwBitBuff >>= 8; + os->nBits -= 8; + } + + pItem1 = (PTR_INVALID_OR_NULL(pLast)) ? NULL : pLast; + pItem2 = Call1500E740(1); + pItem2->dcmpByte = pItem1->dcmpByte; + pItem2->byteValue = pItem1->byteValue; + pItem2->parent = pItem1; + items306C[pItem2->dcmpByte] = pItem2; + + pItem2 = Call1500E740(1); + pItem2->dcmpByte = bOneByte; + pItem2->byteValue = 0; + pItem2->parent = pItem1; + items306C[pItem2->dcmpByte] = pItem2; + pItem1->child = pItem2; + + Call1500E820(pItem2); + + if(bIsCmp0 != 0) + { + Call1500E820(items306C[bOneByte]); + continue; + } + + for(pItem1 = items306C[bOneByte]; pItem1 != NULL; pItem1 = pItem1->parent) + { + pItem1->byteValue++; + pItem2 = pItem1; + + for(;;) + { + pItem3 = pItem2->prev; + if(PTR_INVALID_OR_NULL(pItem3)) + { + pItem3 = NULL; + break; + } + if(pItem3->byteValue >= pItem1->byteValue) + break; + pItem2 = pItem3; + } + + if(pItem2 != pItem1) + { + InsertItem(&pItem305C, pItem2, SWITCH_ITEMS, pItem1); + InsertItem(&pItem305C, pItem1, SWITCH_ITEMS, pItem3); + + pItem3 = pItem2->parent->child; + if(pItem1->parent->child == pItem1) + pItem1->parent->child = pItem2; + + if(pItem3 == pItem2) + pItem2->parent->child = pItem1; + + pTemp = pItem1->parent; + pItem1->parent = pItem2->parent; + pItem2->parent = pTemp; + offs0004++; + } + } + } +// 1500EB62 + else + { + dwBitBuff = 0; + nBits = 0; + for(pItem2 = pItem1->parent; pItem2 != NULL; pItem2 = pItem2->parent) + { + nBit = (pItem2->child != pItem1) ? 1 : 0; + dwBitBuff = (dwBitBuff << 1) | nBit; + nBits++; + pItem1 = pItem2; + } + os->PutBits(dwBitBuff, nBits); + } + +// 1500EB98 + if(bIsCmp0 != 0) + Call1500E820(items306C[bOneByte]); // 1500EB9D +// 1500EBAF + } // for(; nInLength != 0; nInLength--) + +// 1500EBB8 + pItem1 = items306C[0x100]; + dwBitBuff = 0; + nBits = 0; + for(pItem2 = pItem1->parent; pItem2 != NULL; pItem2 = pItem2->parent) + { + nBit = (pItem2->child != pItem1) ? 1 : 0; + dwBitBuff = (dwBitBuff << 1) | nBit; + nBits++; + pItem1 = pItem2; + } + +// 1500EBE6 + os->PutBits(dwBitBuff, nBits); + +// 1500EBEF + // Flush the remaining bits + while(os->nBits != 0) + { + if(os->cbOutSize != 0) + { + *os->pbOutPos++ = (unsigned char)os->dwBitBuff; + os->cbOutSize--; + } + os->dwBitBuff >>= 8; + os->nBits -= ((os->nBits > 8) ? 8 : os->nBits); + } + + return (unsigned int)(os->pbOutPos - os->pbOutBuffer); +} + +// Decompression using Huffman tree (1500E450) +unsigned int THuffmannTree::DoDecompression(unsigned char * pbOutBuffer, unsigned int dwOutLength, TInputStream * is) +{ + TQDecompress * qd; + THTreeItem * pItem1; + THTreeItem * pItem2; + unsigned char * pbOutPos = pbOutBuffer; + unsigned long nBitCount; + unsigned int nDcmpByte = 0; + unsigned int n8Bits; // 8 bits loaded from input stream + unsigned int n7Bits; // 7 bits loaded from input stream + bool bHasQdEntry; + + // Test the output length. Must not be NULL. + if(dwOutLength == 0) + return 0; + + // Get the compression type from the input stream + n8Bits = is->Get8Bits(); + + // Build the Huffman tree + BuildTree(n8Bits); + bIsCmp0 = (n8Bits == 0) ? 1 : 0; + + for(;;) + { + // Security check: If we are at the end of the input buffer, + // it means that the data is corrupt + if(is->BitCount == 0 && is->pbInBuffer >= is->pbInBufferEnd) + return 0; + + // Get 7 bits from input stream + n7Bits = is->Get7Bits(); + + // Try to use quick decompression. Check TQDecompress array for corresponding item. + // If found, ise the result byte instead. + qd = &qd3474[n7Bits]; + + // If there is a quick-pass possible (ebx) + bHasQdEntry = (qd->offs00 >= offs0004) ? true : false; + + // If we can use quick decompress, use it. + if(bHasQdEntry) + { + if(qd->nBits > 7) + { + is->SkipBits(7); + pItem1 = qd->pItem; + goto _1500E549; + } + is->SkipBits(qd->nBits); + nDcmpByte = qd->dcmpByte; + } + else + { + pItem1 = pFirst->next->prev; + if(PTR_INVALID_OR_NULL(pItem1)) + pItem1 = NULL; +_1500E549: + nBitCount = 0; + pItem2 = NULL; + + do + { + if(pItem1 == NULL) + return 0; + + pItem1 = pItem1->child; // Move down by one level + if(is->GetBit()) // If current bit is set, move to previous + pItem1 = pItem1->prev; + + if(++nBitCount == 7) // If we are at 7th bit, save current HTree item. + pItem2 = pItem1; + } + while(pItem1->child != NULL); // Walk until tree has no deeper level + + if(bHasQdEntry == false) + { + if(nBitCount > 7) + { + qd->offs00 = offs0004; + qd->nBits = nBitCount; + qd->pItem = pItem2; + } + else + { + unsigned long nIndex = n7Bits & (0xFFFFFFFF >> (32 - nBitCount)); + unsigned long nAdd = (1 << nBitCount); + + for(qd = &qd3474[nIndex]; nIndex <= 0x7F; nIndex += nAdd, qd += nAdd) + { + qd->offs00 = offs0004; + qd->nBits = nBitCount; + qd->dcmpByte = pItem1->dcmpByte; + } + } + } + nDcmpByte = pItem1->dcmpByte; + } + + if(nDcmpByte == 0x101) // Huffman tree needs to be modified + { + n8Bits = is->Get8Bits(); + pItem1 = (PTR_INVALID_OR_NULL(pLast)) ? NULL : pLast; + + pItem2 = Call1500E740(1); + pItem2->parent = pItem1; + pItem2->dcmpByte = pItem1->dcmpByte; + pItem2->byteValue = pItem1->byteValue; + items306C[pItem2->dcmpByte] = pItem2; + + pItem2 = Call1500E740(1); + pItem2->parent = pItem1; + pItem2->dcmpByte = n8Bits; + pItem2->byteValue = 0; + items306C[pItem2->dcmpByte] = pItem2; + + pItem1->child = pItem2; + Call1500E820(pItem2); + if(bIsCmp0 == 0) + Call1500E820(items306C[n8Bits]); + + nDcmpByte = n8Bits; + } + + if(nDcmpByte == 0x100) + break; + + *pbOutPos++ = (unsigned char)nDcmpByte; + if(--dwOutLength == 0) + break; + + if(bIsCmp0) + Call1500E820(items306C[nDcmpByte]); + } + + return (unsigned int)(pbOutPos - pbOutBuffer); +} + + +// Table for (de)compression. Every compression type has 258 entries +unsigned char THuffmannTree::Table1502A630[] = +{ + // Data for compression type 0x00 + 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 + 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 + 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 + 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 + 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 + 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 + 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 + 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 + 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 +}; diff --git a/src/huffman/huff_old.h b/src/huffman/huff_old.h new file mode 100644 index 0000000..83e9b2c --- /dev/null +++ b/src/huffman/huff_old.h @@ -0,0 +1,142 @@ +/*****************************************************************************/ +/* huffman.h Copyright (c) Ladislav Zezula 2003 */ +/*---------------------------------------------------------------------------*/ +/* Description : */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* xx.xx.xx 1.00 Lad The first version of huffman.h */ +/* 03.05.03 2.00 Lad Added compression */ +/* 08.12.03 2.01 Dan High-memory handling (> 0x80000000) */ +/*****************************************************************************/ + +#ifndef __HUFFMAN_H__ +#define __HUFFMAN_H__ + +#include "../StormPort.h" + +//----------------------------------------------------------------------------- +// Defines + +#define INSERT_ITEM 1 +#define SWITCH_ITEMS 2 // Switch the item1 and item2 + +#define PTR_NOT(ptr) (THTreeItem *)(~(DWORD_PTR)(ptr)) +#define PTR_PTR(ptr) ((THTreeItem *)(ptr)) +#define PTR_INT(ptr) (INT_PTR)(ptr) + +#ifndef NULL +#define NULL 0 +#endif + +//----------------------------------------------------------------------------- +// Structures and classes + +// Input stream for Huffmann decompression +class TInputStream +{ + public: + + unsigned long GetBit(); + unsigned long Get7Bits(); + unsigned long Get8Bits(); + void SkipBits(unsigned int BitCount); + + unsigned char * pbInBuffer; // Input data + unsigned char * pbInBufferEnd; // End of the input buffer + unsigned long BitBuffer; // Input bit buffer + unsigned int BitCount; // Number of bits remaining in 'dwBitBuff' +}; + +// Output stream for Huffmann compression +class TOutputStream +{ + public: + + void PutBits(unsigned long dwBuff, unsigned int nPutBits); + + unsigned char * pbOutBuffer; // 00 : Output buffer + unsigned long cbOutSize; // 04 : Size of output buffer + unsigned char * pbOutPos; // 08 : Current output position + unsigned long dwBitBuff; // 0C : Bit buffer + unsigned long nBits; // 10 : Number of bits in the bit buffer +}; + +// Huffmann tree item (?) +struct THTreeItem +{ + THTreeItem * Call1501DB70(THTreeItem * pLast); + THTreeItem * GetPrevItem(LONG_PTR value); + void ClearItemLinks(); + void RemoveItem(); + + THTreeItem * next; // 00 - Pointer to next THTreeItem + THTreeItem * prev; // 04 - Pointer to prev THTreeItem (< 0 if none) + unsigned long dcmpByte; // 08 - Index of this item in item pointer array, decompressed byte value + unsigned long byteValue; // 0C - Some byte value + THTreeItem * parent; // 10 - Pointer to parent THTreeItem (NULL if none) + THTreeItem * child; // 14 - Pointer to child THTreeItem + int addressMultiplier; // -1 if object on negative address (>0x80000000), +1 if positive +}; + +// Structure used for quick decompress. The 'bitCount' contains number of bits +// and byte value contains result decompressed byte value. +// After each walk through Huffman tree are filled all entries which are +// multiplies of number of bits loaded from input stream. These entries +// contain number of bits and result value. At the next 7 bits is tested this +// structure first. If corresponding entry found, decompression routine will +// not walk through Huffman tree and directly stores output byte to output stream. +struct TQDecompress +{ + unsigned long offs00; // 00 - 1 if resolved + unsigned long nBits; // 04 - Bit count + union + { + unsigned long dcmpByte; // 08 - Byte value for decompress (if bitCount <= 7) + THTreeItem * pItem; // 08 - THTreeItem (if number of bits is greater than 7 + }; +}; + +// Structure for Huffman tree (Size 0x3674 bytes). Because I'm not expert +// for the decompression, I do not know actually if the class is really a Hufmann +// tree. If someone knows the decompression details, please let me know +class THuffmannTree +{ + public: + + THuffmannTree(); + void InitTree(bool bCompression); + void BuildTree(unsigned int nCmpType); +// void ModifyTree(unsigned long dwIndex); +// void UninitTree(); + +// void Call15007010(Bit32 dwInLength, THTreeItem * item); + THTreeItem * Call1500E740(unsigned int nValue); + void Call1500E820(THTreeItem * pItem); + unsigned int DoCompression(TOutputStream * os, unsigned char * pbInBuffer, int nInLength, int nCmpType); + unsigned int DoDecompression(unsigned char * pbOutBuffer, unsigned int dwOutLength, TInputStream * is); + + unsigned long bIsCmp0; // 0000 - 1 if compression type 0 + unsigned long offs0004; // 0004 - Some flag + THTreeItem items0008[0x203]; // 0008 - HTree items + + //- Sometimes used as HTree item ----------- + THTreeItem * pItem3050; // 3050 - Always NULL (?) + THTreeItem * pItem3054; // 3054 - Pointer to Huffman tree item + THTreeItem * pItem3058; // 3058 - Pointer to Huffman tree item (< 0 if invalid) + + //- Sometimes used as HTree item ----------- + THTreeItem * pItem305C; // 305C - Usually NULL + THTreeItem * pFirst; // 3060 - Pointer to top (first) Huffman tree item + THTreeItem * pLast; // 3064 - Pointer to bottom (last) Huffman tree item (< 0 if invalid) + unsigned long nItems; // 3068 - Number of used HTree items + + //------------------------------------------- + THTreeItem * items306C[0x102]; // 306C - THTreeItem pointer array + TQDecompress qd3474[0x80]; // 3474 - Array for quick decompression + int addressMultiplier; // -1 if object on negative address (>0x80000000), +1 if positive + + static unsigned char Table1502A630[];// Some table +}; + +#endif // __HUFFMAN_H__ |