def _parse_event_payloads(self, stream):
(code, payload_size) = unpack('BB', stream)
event_type = evt.EventType(code)
if event_type is not evt.EventType.EVENT_PAYLOADS:
raise Exception('expected event payloads, but got: %s' % event_type)
payload_size -= 1 # includes size byte for some reason
command_count = payload_size // 3
if command_count * 3 != payload_size:
raise Exception('payload size not divisible by 3: %d' % payload_size)
payload_sizes = {}
for i in range(command_count):
(code, size) = unpack('BH', stream)
payload_sizes[evt.EventType(code)] = size
return payload_sizes
def _parse_event(self, event_stream, payload_sizes):
(code, ) = unpack('B', event_stream)
try:
event_type = evt.EventType(code)
except ValueError:
warn('skipping unknown event code: %d' % code)
return None
payload = event_stream.read(payload_sizes[event_type])
stream = io.BytesIO(payload)
if event_type is evt.EventType.GAME_START:
return evt.Start._parse(stream)
elif event_type is evt.EventType.FRAME_PRE:
return evt.Frame.Event(evt.Frame.Event.Id(stream),
evt.Frame.Port.Data.Pre(stream))
elif event_type is evt.EventType.FRAME_POST:
return evt.Frame.Event(evt.Frame.Event.Id(stream),
evt.Frame.Port.Data.Post(stream))
elif event_type is evt.EventType.GAME_END:
return evt.End._parse(stream)
else:
raise Exception('unexpected event: %s' % event_type)
def _parse_event(self, event_stream, payload_sizes):
(code,) = unpack('B', event_stream)
payload = event_stream.read(payload_sizes[code])
stream = io.BytesIO(payload)
try: event_type = evt.EventType(code)
except ValueError: event_type = None
if event_type is evt.EventType.GAME_START:
return evt.Start._parse(stream)
elif event_type is evt.EventType.FRAME_PRE:
return evt.Frame.Event(evt.Frame.Event.Id(stream),
evt.Frame.Port.Data.Pre(stream))
elif event_type is evt.EventType.FRAME_POST:
return evt.Frame.Event(evt.Frame.Event.Id(stream),
evt.Frame.Port.Data.Post(stream))
elif event_type is evt.EventType.GAME_END:
return evt.End._parse(stream)
else:
warn('unknown event code: 0x%02x' % code)
return None