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Pi Camera backend version 0.something

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This commit is contained in:
Fabio Manganiello 2018-06-14 02:14:08 +02:00
parent 85512424ae
commit 793b4df12d
1 changed files with 27 additions and 29 deletions
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56
platypush/backend/camera/pi.py
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@ -6,7 +6,6 @@ from threading import Event
from platypush.backend import Backend from platypush.backend import Backend
class CameraPiBackend(Backend): class CameraPiBackend(Backend):
def __init__(self, listen_port, x_resolution=640, y_resolution=480, def __init__(self, listen_port, x_resolution=640, y_resolution=480,
framerate=24, hflip=False, vflip=False, framerate=24, hflip=False, vflip=False,
@ -14,7 +13,6 @@ class CameraPiBackend(Backend):
video_stabilization=False, ISO=0, exposure_compensation=0, video_stabilization=False, ISO=0, exposure_compensation=0,
exposure_mode='auto', meter_mode='average', awb_mode='auto', exposure_mode='auto', meter_mode='average', awb_mode='auto',
image_effect='none', color_effects=None, rotation=0, image_effect='none', color_effects=None, rotation=0,
start_recording_on_startup=True,
crop=(0.0, 0.0, 1.0, 1.0), **kwargs): crop=(0.0, 0.0, 1.0, 1.0), **kwargs):
""" See https://www.raspberrypi.org/documentation/usage/camera/python/README.md """ See https://www.raspberrypi.org/documentation/usage/camera/python/README.md
for a detailed reference about the Pi camera options """ for a detailed reference about the Pi camera options """
@ -22,7 +20,6 @@ class CameraPiBackend(Backend):
super().__init__(**kwargs) super().__init__(**kwargs)
self.listen_port = listen_port self.listen_port = listen_port
self.start_recording_on_startup = start_recording_on_startup
self.server_socket = socket.socket() self.server_socket = socket.socket()
self.server_socket.bind(('0.0.0.0', self.listen_port)) self.server_socket.bind(('0.0.0.0', self.listen_port))
self.server_socket.listen(0) self.server_socket.listen(0)
@ -45,11 +42,6 @@ class CameraPiBackend(Backend):
self.camera.color_effects = color_effects self.camera.color_effects = color_effects
self.camera.rotation = rotation self.camera.rotation = rotation
self.camera.crop = crop self.camera.crop = crop
self.start_recording_event = Event()
self.stop_recording_event = Event()
if self.start_recording_on_startup:
self.start_recording_event.set()
self.logger.info('Initialized Pi camera backend') self.logger.info('Initialized Pi camera backend')
@ -58,37 +50,43 @@ class CameraPiBackend(Backend):
self.camera.capture(image_file) self.camera.capture(image_file)
self.logger.info('Captured camera snapshot to {}'.format(image_file)) self.logger.info('Captured camera snapshot to {}'.format(image_file))
def start_recording(self): def start_recording(self, video_file=None, format='h264'):
if not self.start_recording_event.is_set(): self.logger.info('Starting camera recording')
self.start_recording_event.set()
self.stop_recording_event.clear() if video_file:
self.camera.start_recording(videofile, format=format)
else:
connection = self.server_socket.accept()[0].makefile('wb')
self.logger.info('Accepted client connection on port {}'.
format(self.listen_port))
self.camera.start_recording(connection, format=format)
def stop_recording(self): def stop_recording(self):
if not self.stop_recording_event.is_set(): self.logger.info('Stopping camera recording')
self.stop_recording_event.set()
self.start_recording_event.clear() try:
self.camera.stop_recording()
except:
self.logger.info('No recording currently in progress')
def run(self): def run(self):
super().run() super().run()
while True: while True:
if not self.start_recording_event.is_set(): restart = True
self.start_recording_event.wait()
self.logger.info('Starting camera recording')
connection = self.server_socket.accept()[0].makefile('wb')
try: try:
self.camera.start_recording(connection, format='h264') self.start_recording()
self.stop_recording_event.wait() while True:
self.logger.info('Stopping camera recording') self.camera.wait_recording(60)
except ConnectionError as e: except ConnectionError:
self.logger.info('Client {} closed connection'.format(connection)) self.logger.info('Client closed connection')
finally: finally:
try: connection.close() try:
except: pass self.stop_recording()
except Exception as e:
self.camera.stop_recording() self.logger.exception(e)
# vim:sw=4:ts=4:et: # vim:sw=4:ts=4:et: