Identify and construct the Header for lz4_hc for reverse conversion from dvpl

[Maddox Wong]

reference

04 22 4d 18     magic number
64 70 b9        3-byte frame descriptor
da 82 07 00     block length (492250 bytes here)
84 7f 45 4c 46  LZ4-compressed data (ie. tag byte 0x84 followed by
...               the literal "\x7fELF\1\1\1\0" and so on)

• Magic number identified
• 3-byte frame descriptor identified
• block length identified

[Maddox Wong]

Magic number should be always 04 22 4d 18

[Maddox Wong]

found a way to compress without LZ4 headers and footers, closed