def parse_fields(pkt, lines):
result=[]
logger.debug("Starting decompression")
d = SAPDiag()
(sig, compressed_len) = unpack('>4sI', pkt[0:8])
(uncompressed_len,) = unpack('<I', pkt[8:12])
logger.debug("sig = {}, compressed_len = {}, uncompressed_len = {}".format(sig, compressed_len, uncompressed_len))
rez=d.do_decompress(pkt[8:compressed_len],uncompressed_len)
for i in range(lines):
result.append(rez[128 * i:128 * i + 128])
return result
