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Improved management of PiCamera start/stop streaming events

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This commit is contained in:
Fabio Manganiello 2019-12-27 16:56:03 +01:00
parent b880a02ef6
commit fb2ff7d1d6
1 changed files with 13 additions and 21 deletions
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30
platypush/plugins/camera/pi.py
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@ -85,8 +85,8 @@ class CameraPiPlugin(CameraPlugin):
self._streaming_thread = None
self._time_lapse_stop_condition = threading.Condition()
self._recording_stop_condition = threading.Condition()
self._streaming_stop_condition = threading.Condition()
self._output = None
self._can_stream = False
# noinspection PyUnresolvedReferences,PyPackageRequirements
def _get_camera(self, **opts):
@ -493,24 +493,23 @@ class CameraPiPlugin(CameraPlugin):
server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server_socket.bind(('0.0.0.0', listen_port))
server_socket.listen(1)
server_socket.settimeout(1)
# noinspection PyBroadException
def streaming_thread():
try:
self.logger.info('Starting streaming on port {}'.format(listen_port))
should_stop = False
while not should_stop:
while self._can_stream:
sock = None
stream = None
try:
server_socket.settimeout(1)
sock = server_socket.accept()[0]
stream = sock.makefile('wb')
self.logger.info('Accepted client connection from {}'.format(sock.getpeername()))
except socket.timeout:
pass
continue
try:
if stream:
@ -520,29 +519,24 @@ class CameraPiPlugin(CameraPlugin):
except ConnectionError:
self.logger.info('Client closed connection')
finally:
if not should_stop:
self._streaming_stop_condition.acquire()
should_stop = self._streaming_stop_condition.wait(timeout=1)
self._streaming_stop_condition.release()
if sock:
sock.close()
finally:
try:
server_socket.close()
camera.stop_recording()
except:
pass
try:
sock.close()
except:
pass
finally:
try:
server_socket.close()
camera.close()
except:
pass
self._streaming_thread = None
self.logger.info('Stopped camera stream')
self._can_stream = True
self._streaming_thread = threading.Thread(target=streaming_thread)
self._streaming_thread.start()
@ -556,9 +550,7 @@ class CameraPiPlugin(CameraPlugin):
self.logger.info('No recording thread is running')
return
self._streaming_stop_condition.acquire()
self._streaming_stop_condition.notify_all()
self._streaming_stop_condition.release()
self._can_stream = False
if self._streaming_thread:
self._streaming_thread.join()