BTECCompressor.h

Go to the documentation of this file.

#pragma once
 
TOSHI_NAMESPACE_START
 
class BTECCompressor
{
public:
    class Node
    {
    public:
        friend BTECCompressor;
 
    public:
        Node() = default;
        /*{
                m_Ptr1 = this;
                m_Ptr2 = this;
            }*/
 
        void Reset()
        {
            m_Ptr1 = this;
            m_Ptr2 = this;
        }
 
    private:
        Node*  m_Ptr1;
        Node*  m_Ptr2;
        Node*  m_Unk1;
        Node*  m_Unk2;
        TBYTE* m_Unk3;
        void*  m_Unk4;
    };
 
    using Bucket = Node**;
 
public:
    BTECCompressor();
    ~BTECCompressor();
 
    void  Initialize( TBYTE* buffer, size_t bufferSize, TINT maxoffset, TINT unk );
    void  FUN_0068ae40( size_t dataSize );
    TBOOL FUN_0068af10( TBYTE* buffer, size_t bufferSize, TBYTE*& offset, size_t& dataSize );
    void  AllocSubstring( TBYTE* buffer );
 
    static TBOOL FUN_0068b300( TBYTE* buffer, Bucket nodeBucket, size_t bufferSize, Node*& out1, Node*& out2 );
 
    static TUINT32 HashData( TBYTE* data, size_t size )
    {
        TUINT32 hash = 0;
        while ( size != 0 )
        {
            hash = (TUINT32)*data ^ hash >> 0x1B ^ hash << 5;
            size -= 1;
            data += 1;
        }
 
        return hash;
    }
 
private:
    TBYTE*  m_Buffer1;
    TUINT32 m_MaxOffset;
    TBYTE*  m_DataEnd;
    TBYTE*  m_Buffer2;
    TBYTE*  m_Buffer3;
    Node*   m_SomeArray1;
    Node    m_Root1;
    Node    m_Root2;
    TBYTE*  m_Offsets[ 256 ];
    Bucket* m_Buckets;
    TUINT32 m_BucketCount;
};
 
TOSHI_NAMESPACE_END