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winamp/Src/external_dependencies/openmpt-trunk/include/ancient/src/SHRIDecompressor.hpp
2024-09-24 14:54:57 +02:00

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/* Copyright (C) Teemu Suutari */
#ifndef SHRIDECOMPRESSOR_HPP
#define SHRIDECOMPRESSOR_HPP
#include "XPKDecompressor.hpp"
namespace ancient::internal
{
class SHRIDecompressor : public XPKDecompressor
{
private:
class SHRIState : public XPKDecompressor::State
{
public:
SHRIState() noexcept;
virtual ~SHRIState();
uint32_t vlen=0;
uint32_t vnext=0;
uint32_t shift=0;
uint32_t ar[999];
};
public:
SHRIDecompressor(uint32_t hdr,uint32_t recursionLevel,const Buffer &packedData,std::shared_ptr<XPKDecompressor::State> &state,bool verify);
virtual ~SHRIDecompressor();
virtual const std::string &getSubName() const noexcept override final;
virtual void decompressImpl(Buffer &rawData,const Buffer &previousData,bool verify) override final;
static bool detectHeaderXPK(uint32_t hdr) noexcept;
static std::shared_ptr<XPKDecompressor> create(uint32_t hdr,uint32_t recursionLevel,const Buffer &packedData,std::shared_ptr<XPKDecompressor::State> &state,bool verify);
private:
const Buffer &_packedData;
uint32_t _ver=0;
size_t _startOffset=0;
size_t _rawSize=0;
std::shared_ptr<XPKDecompressor::State> &_state; // reference!!!
};
}
#endif