ref: 2c4de3dc497a89027aed78548436e64c3631499e
dir: /other/extract_snapshot_log.py/
import struct
import sys
data = open(sys.argv[1], 'rb').read()
ver, total_frames, log_size, last_inputs = struct.unpack_from('IIII', data)
log = data[32:32+log_size]
KEYS = "AXsSUDLRBY"
keys_memo = {}
def get_keys(i):
if i not in keys_memo:
keys_memo[i] = "".join(k for j, k in enumerate(KEYS) if i & (1 << j))
return keys_memo[i]
frame_ctr = 0
bb = iter(log)
try:
while True:
cmd = bb.__next__()
mask = 0xf if cmd < 0xc0 else 1
frames = cmd & mask
if frames == mask:
while True:
t = bb.__next__()
frames += t
if t != 255:
break
frame_ctr += frames
if cmd < 0xc0:
last_inputs ^= 1 << (cmd >> 4)
print('%d: %s' % (frame_ctr, get_keys(last_inputs)))
elif cmd < 0xd0:
nb = 1 + ((cmd >> 2) & 3)
addr = ((cmd >> 1) & 1) << 16
addr |= bb.__next__() << 8
addr |= bb.__next__()
for i in range(nb):
bb.__next__()
print('%d: patchbytes(0x%x)' % (frame_ctr, addr))
else:
assert 0
except StopIteration:
pass