def _decode_event_stream(decoder, eventid_typeid, event_types, decode_user_id):
    # Decodes events prefixed with a gameloop and possibly userid
    gameloop = 0
    while not decoder.done():
        start_bits = decoder.used_bits()

        # decode the gameloop delta before each event
        delta = _varuint32_value(decoder.instance(svaruint32_typeid))
        gameloop += delta

        # decode the userid before each event
        if decode_user_id:
            userid = decoder.instance(replay_userid_typeid)

        # decode the event id
        eventid = decoder.instance(eventid_typeid)
        typeid, typename = event_types.get(eventid, (None, None))
        if typeid is None:
            raise CorruptedError('eventid(%d) at %s' % (eventid, decoder))

        # decode the event struct instance
        event = decoder.instance(typeid)
        event['_event'] = typename
        event['_eventid'] = eventid

        #  insert gameloop and userid
        event['_gameloop'] = gameloop
        if decode_user_id:
            event['_userid'] = userid

        # the next event is byte aligned
        decoder.byte_align()

        # insert bits used in stream
        event['_bits'] = decoder.used_bits() - start_bits

        yield event
dataset/ETHPy150Open Blizzard/heroprotocol/protocol37069.py/_decode_event_stream/original