def main():
args = parse_args()
comm_config = {
'subscribe': {},
'broker': {
'address': args['broker_ip'],
'port': args['broker_port']
}
}
comm = Communicator(comm_config, debug=True)
duration = lambda t: (datetime.now() - t).microseconds / 1000
if args['mode'] == 'stream':
counter = 0
capture = cv2.VideoCapture(0)
while True:
status, im = capture.read()
if (status is False):
logger.warn('ERROR: Failure happened when reading frame')
t = datetime.now()
retval, jpg_bytes = cv2.imencode('.jpg', im)
mqtt_payload = payload.serialize_jpg(jpg_bytes)
comm.send('berrynet/data/rgbimage', mqtt_payload)
logger.debug('send: {} ms'.format(duration(t)))
time.sleep(1.0 / args['fps'])
elif args['mode'] == 'file':
# Prepare MQTT payload
im = cv2.imread(args['filepath'])
retval, jpg_bytes = cv2.imencode('.jpg', im)
t = datetime.now()
mqtt_payload = payload.serialize_jpg(jpg_bytes)
logger.debug('payload: {} ms'.format(duration(t)))
logger.debug('payload size: {}'.format(len(mqtt_payload)))
# Client publishes payload
t = datetime.now()
comm.send('berrynet/data/rgbimage', mqtt_payload)
logger.debug('mqtt.publish: {} ms'.format(duration(t)))
logger.debug('publish at {}'.format(datetime.now().isoformat()))
else:
logger.error('User assigned unknown mode {}'.format(args['mode']))
def snapshot(self, pl):
'''Send camera snapshot.
The functionality is the same as using camera client in file mode.
The difference is that snapshot client retrieves image from camera
instead of given filepath.
'''
duration = lambda t: (datetime.now() - t).microseconds / 1000
# WORKAROUND: Prevent VideoCapture from buffering frames.
# VideoCapture will buffer frames automatically, and we need
# to find a way to disable it.
self.capture = cv2.VideoCapture(0)
status, im = self.capture.read()
if (status is False):
logger.warn('ERROR: Failure happened when reading frame')
t = datetime.now()
retval, jpg_bytes = cv2.imencode('.jpg', im)
mqtt_payload = payload.serialize_jpg(jpg_bytes)
self.comm.send('berrynet/data/rgbimage', mqtt_payload)
logger.debug('send: {} ms'.format(duration(t)))
self.capture.release()
def main():
args = parse_args()
if args['debug']:
logger.setLevel(logging.DEBUG)
else:
logger.setLevel(logging.INFO)
comm_config = {
'subscribe': {},
'broker': {
'address': args['broker_ip'],
'port': args['broker_port']
}
}
comm = Communicator(comm_config, debug=True)
duration = lambda t: (datetime.now() - t).microseconds / 1000
metadata = json.loads(args.get('meta', '{}'))
if args['mode'] == 'stream':
counter = 0
fail_counter = 0
# Check input stream source
if args['stream_src'].isdigit():
# source is a physically connected camera
stream_source = int(args['stream_src'])
else:
# source is an IP camera
stream_source = args['stream_src']
capture = cv2.VideoCapture(stream_source)
cam_fps = capture.get(cv2.CAP_PROP_FPS)
if cam_fps > 30 or cam_fps < 1:
logger.warn('Camera FPS is {} (>30 or <1). Set it to 30.'.format(cam_fps))
cam_fps = 30
out_fps = args['fps']
interval = int(cam_fps / out_fps)
# warmup
#t_warmup_start = time.time()
#t_warmup_now = time.time()
#warmup_counter = 0
#while t_warmup_now - t_warmup_start < 1:
# capture.read()
# warmup_counter += 1
# t_warmup_now = time.time()
logger.debug('===== VideoCapture Information =====')
if stream_source.isdigit():
stream_source_uri = '/dev/video{}'.format(stream_source)
else:
stream_source_uri = stream_source
logger.debug('Stream Source: {}'.format(stream_source_uri))
logger.debug('Camera FPS: {}'.format(cam_fps))
logger.debug('Output FPS: {}'.format(out_fps))
logger.debug('Interval: {}'.format(interval))
logger.debug('Send MQTT Topic: {}'.format(args['topic']))
#logger.debug('Warmup Counter: {}'.format(warmup_counter))
logger.debug('====================================')
while True:
status, im = capture.read()
# To verify whether the input source is alive, you should use the
# return value of capture.read(). It will not work by capturing
# exception of a capture instance, or by checking the return value
# of capture.isOpened().
#
# Two reasons:
# 1. If a dead stream is alive again, capture will not notify
# that input source is dead.
#
# 2. If you check capture.isOpened(), it will keep retruning
# True if a stream is dead afterward. So you can not use
# the capture return value (capture status) to determine
# whether a stream is alive or not.
if (status is True):
counter += 1
if counter == interval:
logger.debug('Drop frames: {}'.format(counter-1))
counter = 0
# Open a window and display the ready-to-send frame.
# This is useful for development and debugging.
if args['display']:
cv2.imshow('Frame', im)
cv2.waitKey(1)
t = datetime.now()
retval, jpg_bytes = cv2.imencode('.jpg', im)
mqtt_payload = payload.serialize_jpg(jpg_bytes, args['hash'], metadata)
comm.send(args['topic'], mqtt_payload)
logger.debug('send: {} ms'.format(duration(t)))
else:
pass
else:
fail_counter += 1
logger.critical('ERROR: Failure #{} happened when reading frame'.format(fail_counter))
# Re-create capture.
capture.release()
logger.critical('Re-create a capture and reconnect to {} after 5s'.format(stream_source))
time.sleep(5)
capture = cv2.VideoCapture(stream_source)
elif args['mode'] == 'file':
# Prepare MQTT payload
im = cv2.imread(args['filepath'])
retval, jpg_bytes = cv2.imencode('.jpg', im)
t = datetime.now()
mqtt_payload = payload.serialize_jpg(jpg_bytes, args['hash'], metadata)
logger.debug('payload: {} ms'.format(duration(t)))
logger.debug('payload size: {}'.format(len(mqtt_payload)))
# Client publishes payload
t = datetime.now()
comm.send(args['topic'], mqtt_payload)
logger.debug('mqtt.publish: {} ms'.format(duration(t)))
logger.debug('publish at {}'.format(datetime.now().isoformat()))
else:
logger.error('User assigned unknown mode {}'.format(args['mode']))
def main():
args = parse_args()
if args['debug']:
logger.setLevel(logging.DEBUG)
else:
logger.setLevel(logging.INFO)
comm_config = {
'subscribe': {},
'broker': {
'address': args['broker_ip'],
'port': args['broker_port']
}
}
comm = Communicator(comm_config, debug=True)
duration = lambda t: (datetime.now() - t).microseconds / 1000
if args['mode'] == 'stream':
counter = 0
# Check input stream source
if args['stream_src'].isdigit():
# source is a physically connected camera
stream_source = '/dev/video{}'.format(int(args['stream_src']))
capture = cv2.VideoCapture(int(args['stream_src']))
else:
# source is an IP camera
stream_source = args['stream_src']
capture = cv2.VideoCapture(args['stream_src'])
cam_fps = capture.get(cv2.CAP_PROP_FPS)
if cam_fps > 30 or cam_fps < 1:
logger.warn(
'Camera FPS is {} (>30 or <1). Set it to 30.'.format(cam_fps))
cam_fps = 30
out_fps = args['fps']
interval = int(cam_fps / out_fps)
# warmup
#t_warmup_start = time.time()
#t_warmup_now = time.time()
#warmup_counter = 0
#while t_warmup_now - t_warmup_start < 1:
# capture.read()
# warmup_counter += 1
# t_warmup_now = time.time()
logger.debug('===== VideoCapture Information =====')
logger.debug('Stream Source: {}'.format(stream_source))
logger.debug('Camera FPS: {}'.format(cam_fps))
logger.debug('Output FPS: {}'.format(out_fps))
logger.debug('Interval: {}'.format(interval))
#logger.debug('Warmup Counter: {}'.format(warmup_counter))
logger.debug('====================================')
while True:
status, im = capture.read()
if (status is False):
logger.warn('ERROR: Failure happened when reading frame')
counter += 1
if counter == interval:
logger.debug('Drop frames: {}'.format(counter - 1))
counter = 0
# Open a window and display the ready-to-send frame.
# This is useful for development and debugging.
if args['display']:
cv2.imshow('Frame', im)
cv2.waitKey(1)
t = datetime.now()
retval, jpg_bytes = cv2.imencode('.jpg', im)
mqtt_payload = payload.serialize_jpg(jpg_bytes)
comm.send('berrynet/data/rgbimage', mqtt_payload)
logger.debug('send: {} ms'.format(duration(t)))
else:
pass
elif args['mode'] == 'file':
# Prepare MQTT payload
im = cv2.imread(args['filepath'])
retval, jpg_bytes = cv2.imencode('.jpg', im)
t = datetime.now()
mqtt_payload = payload.serialize_jpg(jpg_bytes)
logger.debug('payload: {} ms'.format(duration(t)))
logger.debug('payload size: {}'.format(len(mqtt_payload)))
# Client publishes payload
t = datetime.now()
comm.send('berrynet/data/rgbimage', mqtt_payload)
logger.debug('mqtt.publish: {} ms'.format(duration(t)))
logger.debug('publish at {}'.format(datetime.now().isoformat()))
else:
logger.error('User assigned unknown mode {}'.format(args['mode']))