class VideoProcessMng(object):
""" VideoProcessMng ensure one video process in thread """
__metaclass__ = Singleton
def __init__(self, cfg):
self.__vvprocess = None
self.__process_lock = threading.Lock()
self.process_cmd = RaspvidCmd(cfg)
def getlock(self):
""" get lock """
self.__process_lock.acquire()
def releaselock(self):
""" release lock """
self.__process_lock.release()
def setprocess(self, process):
""" set process """
self.__vvprocess = process
def isset(self):
""" is set or not """
if self.__vvprocess is not None:
return True
return False
def isrun(self):
""" is run or not """
if self.__vvprocess is not None and self.__vvprocess.poll() is None:
return True
return False
def currpid(self):
""" return pid """
return self.__vvprocess.pid
def start(self):
""" start video process """
APPLOGGER.info('subcall in porcess')
child = None
child = subprocess.Popen(self.process_cmd.cmd(),
shell=True, preexec_fn=os.setsid)
if child is not None:
self.__vvprocess = child
APPLOGGER.info('video process start and set')
def stop(self):
""" kill video process """
if self.isset() and self.isrun():
os.killpg(self.__vvprocess.pid, signal.SIGTERM)
APPLOGGER.info('send video process stoped signal')
def setUp(self):
""" setup """
config_parser = ConfigReader('/home/pi/server/config/raspicam.cfg')
cfg = config_parser.parser()
cmd = RaspvidCmd(cfg.video)
self.cmd = cmd
def __init__(self, cfg):
self.__vvprocess = None
self.__process_lock = threading.Lock()
self.process_cmd = RaspvidCmd(cfg)
