def image(env):
devname = dict(parse_qsl(env.get('QUERY_STRING', ''))).get('device')
if not devname:
return [('Content-Type', 'Image/jpeg'), ('Content-Lentgh', '0')], b''
device_status = CAMERA_STATUS.get(devname, {})
if device_status.get('in_use', False):
data = device_status.get('data', b'')
else:
device_status['in_use'] =True
CAMERA_STATUS[devname] = device_status
imgpath = IMGPATH_TMPL % devname
confpath = CONF_TMPL % devname
conf = {'device': '/dev/' + devname, 'archive': imgpath, 'text': devname}
write_webcam_config(conf, confpath)
capture(confpath)
with open(imgpath, mode='rb') as f:
data = f.read()
device_status['data'] = data
device_status['in_use'] = False
header = [('Content-Type', 'Image/jpeg'), ('Content-Length', str(len(data)))]
return header, data
def record(self, eventid, duration):
storage = os.path.join(self.datadir, eventid)
if os.path.exists(storage):
shutil.rmtree(storage)
self.confs = {}
camera_threads = []
devices = self.setting['devices'] if self.setting.get('devices') else avail_cameras()
for dev in devices:
devname = dev.split('/')[-1]
conf = {
'device': dev,
'text': '%Y-%m-%d %H:%M:%S ' + devname,
'archive': os.path.join(storage, devname + '_%H:%M:%S.jpg')
}
if self.setting.get('width'):
conf['width'] = self.setting['width']
if self.setting.get('height'):
conf['height'] = self.setting['height']
conf_file = os.path.join(self.datadir, devname + '.conf')
write_webcam_config(conf, conf_file)
self.confs[devname] = conf_file
camera_threads.append(Thread(target=self.run_camera, args=(devname, duration)))
for th in camera_threads:
th.start()
for th in camera_threads:
th.join()
def update_pixels(self, devname):
if len(self.pxls[devname]) > 2:
del(self.pxls[devname][2])
os.rename(self.filenames[devname]['newest'], self.filenames[devname]['previous'])
conffile = os.path.join(self.setting.get('tmpdir', '/run/shm'), devname + '.conf')
conf = {
'width': self.width,
'height': self.height,
'device': '/dev/' + devname,
'archive': self.filenames[devname]['newest']
}
write_webcam_config(conf, conffile)
capture(conffile)
img = Image.open(self.filenames[devname]['newest'])
pxs = [img.getpixel(cood) for cood in self.target_pixels]
img.close()
self.pxls[devname].insert(0, pxs)
