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6 Signature 0xFF 'L' 'Z' 'M' 'A' 0x00
1 Flags
0 Has CRC16 of the header
1 Has CRC32 of the data
2 Has filter
3 Need initial dictionary
4-7 Reserved, *must* be zero for now.
1 CompressionMethod
0 No compression
1 Lzma
1 Filter ID
0 none
1 BCJ
2 LZMA properties
1 (uint8_t)((pb * 5 + lp) * 9 + lc) (like in LZMA_Alone)
1 Dictionary size.
eppnnnnn
e: 1 - there is end marker
Dictionary size = (1 << nnnnn) + (pp) << (nnnnn - 2);
2 CRC16 of the header
Compressed data
... ...
(-16) 4 CRC32 of the uncompressed data as big endian uint32_t
-12 8 Uncompressed size as big endian uint64_t
-4 4 Footer magic bytes: 0x0A 'I' 'P' 0x0A
0 (End of file; the last byte of the file is at offset -1.)
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