unix_time_sync.py

'''
(*)~----------------------------------------------------------------------------------
 Pupil Helpers
 Copyright (C) 2012-2016  Pupil Labs

 Distributed under the terms of the GNU Lesser General Public License (LGPL v3.0).
 License details are in the file license.txt, distributed as part of this software.
----------------------------------------------------------------------------------~(*)
'''

import logging
from time import time

from plugin import Plugin

logger = logging.getLogger(__name__)

class Unix_Time_Sync(Plugin):
    def __init__(self, g_pool):
        super().__init__(g_pool)
        if self.ok_to_change():
            difference = self.g_pool.get_now() - time()
            self.g_pool.timebase.value = difference
            logger.info("Synced Pupil time to Unix time")
        else:
            logger.error(
                "Request to change timebase during recording ignored."
                " Turn off recording first and try again."
            )
            self.alive = False

    def ok_to_change(self):
        for p in self.g_pool.plugins:
            if p.class_name == "Recorder":
                if p.running:
                    return False
        return True