4 def insert_crc(i_filename
, fbi_mode
=False, o_filename
=None):
6 o_filename
= i_filename
8 with
open(i_filename
, 'rb') as f
:
10 fcrc
= binascii
.crc32(fdata
).to_bytes(4, byteorder
="big")
11 flength
= len(fdata
).to_bytes(4, byteorder
="big")
13 with
open(o_filename
, 'wb') as f
: