40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
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#ifndef JMMT_LZSS_H
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#define JMMT_LZSS_H
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#include <cstdint>
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namespace jmmt {
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struct LzssHeader {
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std::uint32_t next; // done to keep data layout consistent with PS2
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std::uint8_t cByteId;
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std::uint8_t cHdrSize; // should be sizeof(LzssHeader)
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std::uint8_t nMaxMatch;
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std::uint8_t nFillByte;
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std::uint16_t nRingSize;
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std::uint16_t nErrorId;
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std::uint32_t nUnCompressedBytes;
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std::uint32_t nCompressedBytes;
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std::uint32_t nCRC;
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std::uint32_t nFileId;
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std::uint32_t nCompressedDataCRC;
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};
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static_assert(sizeof(LzssHeader) == 0x20, "LzssHeader doesn't match game expectations, you are CERTAINLY breaking structures");
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/**
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* Decompress TECH LZSS data.
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*
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* \param[in,out] header LZSS header. Unused. Set to nullptr for now.
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* \param[in] compressedInput LZSS compressed input data.
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* \param[in] compressedLength Compressed length.
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* \param[out] destBuffer Destination buffer.
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*
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* \return 0 on success. Non zero value means error.
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*/
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int DecompressLzss(LzssHeader* header, std::uint8_t* compressedInput, std::int32_t compressedLength, std::uint8_t* destBuffer);
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} // namespace jmmt
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#endif
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