63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
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/* Copyright (C) Teemu Suutari */
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#include <cstring>
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#include "common/SubBuffer.hpp"
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#include "CYB2Decoder.hpp"
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#include "XPKMain.hpp"
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#include "common/Common.hpp"
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namespace ancient::internal
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{
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bool CYB2Decoder::detectHeaderXPK(uint32_t hdr) noexcept
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{
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return hdr==FourCC("CYB2");
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}
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std::shared_ptr<XPKDecompressor> CYB2Decoder::create(uint32_t hdr,uint32_t recursionLevel,const Buffer &packedData,std::shared_ptr<XPKDecompressor::State> &state,bool verify)
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{
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return std::make_shared<CYB2Decoder>(hdr,recursionLevel,packedData,state,verify);
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}
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CYB2Decoder::CYB2Decoder(uint32_t hdr,uint32_t recursionLevel,const Buffer &packedData,std::shared_ptr<XPKDecompressor::State> &state,bool verify) :
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XPKDecompressor(recursionLevel),
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_packedData(packedData)
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{
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if (!detectHeaderXPK(hdr) || _packedData.size()<=10) throw Decompressor::InvalidFormatError();
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_blockHeader=_packedData.readBE32(0);
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// after the block header, the next 6 bytes seem to be
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// 00 64 00 00 00 00
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// Those bytes do not seem to be terribly important though...
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if (verify)
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{
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// trigger child checks...
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ConstSubBuffer blockData(_packedData,10,_packedData.size()-10);
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std::shared_ptr<XPKDecompressor::State> state;
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auto sub=XPKMain::createDecompressor(_blockHeader,_recursionLevel+1,blockData,state,true);
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}
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}
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CYB2Decoder::~CYB2Decoder()
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{
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// nothing needed
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}
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const std::string &CYB2Decoder::getSubName() const noexcept
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{
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static std::string name="XPK-CYB2: xpkCybPrefs container";
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return name;
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}
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void CYB2Decoder::decompressImpl(Buffer &rawData,const Buffer &previousData,bool verify)
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{
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ConstSubBuffer blockData(_packedData,10,_packedData.size()-10);
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std::shared_ptr<XPKDecompressor::State> state;
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auto sub=XPKMain::createDecompressor(_blockHeader,_recursionLevel+1,blockData,state,verify);
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sub->decompressImpl(rawData,previousData,verify);
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}
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}
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