def page_camera():
"""
Page to start/stop video stream or time-lapse, or capture a still image.
Displays most recent still image and time-lapse image.
"""
if not flaskutils.user_has_permission('view_camera'):
return redirect(url_for('general_routes.home'))
form_camera = flaskforms.Camera()
camera = Camera.query.all()
# Check if a video stream is active
for each_camera in camera:
if each_camera.stream_started and not CameraStream().is_running():
each_camera.stream_started = False
db.session.commit()
if request.method == 'POST':
if not flaskutils.user_has_permission('edit_settings'):
return redirect(url_for('page_routes.page_camera'))
control = DaemonControl()
mod_camera = Camera.query.filter(
Camera.id == form_camera.camera_id.data).first()
if form_camera.capture_still.data:
if mod_camera.stream_started:
flash(
gettext(
u"Cannot capture still image if stream is active."))
return redirect('/camera')
if CameraStream().is_running():
CameraStream().terminate_controller() # Stop camera stream
time.sleep(2)
camera_record('photo', mod_camera)
elif form_camera.start_timelapse.data:
if mod_camera.stream_started:
flash(gettext(u"Cannot start time-lapse if stream is active."))
return redirect('/camera')
now = time.time()
mod_camera.timelapse_started = True
mod_camera.timelapse_start_time = now
mod_camera.timelapse_end_time = now + float(
form_camera.timelapse_runtime_sec.data)
mod_camera.timelapse_interval = form_camera.timelapse_interval.data
mod_camera.timelapse_next_capture = now
mod_camera.timelapse_capture_number = 0
db.session.commit()
control.refresh_daemon_camera_settings()
elif form_camera.pause_timelapse.data:
mod_camera.timelapse_paused = True
db.session.commit()
control.refresh_daemon_camera_settings()
elif form_camera.resume_timelapse.data:
mod_camera.timelapse_paused = False
db.session.commit()
control.refresh_daemon_camera_settings()
elif form_camera.stop_timelapse.data:
mod_camera.timelapse_started = False
mod_camera.timelapse_start_time = None
mod_camera.timelapse_end_time = None
mod_camera.timelapse_interval = None
mod_camera.timelapse_next_capture = None
mod_camera.timelapse_capture_number = None
db.session.commit()
control.refresh_daemon_camera_settings()
elif form_camera.start_stream.data:
if mod_camera.timelapse_started:
flash(gettext(u"Cannot start stream if time-lapse is active."))
return redirect('/camera')
elif CameraStream().is_running():
flash(
gettext(
u"Cannot start stream. The stream is already running.")
)
return redirect('/camera')
elif (not (mod_camera.camera_type == 'Raspberry Pi'
and mod_camera.library == 'picamera')):
flash(
gettext(u"Streaming is only supported with the Raspberry"
u" Pi camera using the picamera library."))
return redirect('/camera')
elif Camera.query.filter_by(stream_started=True).count():
flash(
gettext(u"Cannot start stream if another stream is "
u"already in progress."))
return redirect('/camera')
else:
mod_camera.stream_started = True
db.session.commit()
elif form_camera.stop_stream.data:
if CameraStream().is_running():
CameraStream().terminate_controller()
mod_camera.stream_started = False
db.session.commit()
return redirect('/camera')
# Get the full path and timestamps of latest still and time-lapse images
latest_img_still_ts = {}
latest_img_still = {}
latest_img_tl_ts = {}
latest_img_tl = {}
for each_camera in camera:
camera_path = os.path.join(
PATH_CAMERAS, '{id}-{uid}'.format(id=each_camera.id,
uid=each_camera.unique_id))
try:
latest_still_img_full_path = max(glob.iglob(
'{path}/still/Still-{cam_id}-*.jpg'.format(
path=camera_path, cam_id=each_camera.id)),
key=os.path.getmtime)
except ValueError:
latest_still_img_full_path = None
if latest_still_img_full_path:
ts = os.path.getmtime(latest_still_img_full_path)
latest_img_still_ts[
each_camera.id] = datetime.datetime.fromtimestamp(ts).strftime(
"%Y-%m-%d %H:%M:%S")
latest_img_still[each_camera.id] = os.path.basename(
latest_still_img_full_path)
else:
latest_img_still[each_camera.id] = None
try:
latest_time_lapse_img_full_path = max(glob.iglob(
'{path}/timelapse/Timelapse-{cam_id}-*.jpg'.format(
path=camera_path, cam_id=each_camera.id)),
key=os.path.getmtime)
except ValueError:
latest_time_lapse_img_full_path = None
if latest_time_lapse_img_full_path:
ts = os.path.getmtime(latest_time_lapse_img_full_path)
latest_img_tl_ts[each_camera.id] = datetime.datetime.fromtimestamp(
ts).strftime("%Y-%m-%d %H:%M:%S")
latest_img_tl[each_camera.id] = os.path.basename(
latest_time_lapse_img_full_path)
else:
latest_img_tl[each_camera.id] = None
time_now = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
return render_template('pages/camera.html',
camera=camera,
form_camera=form_camera,
latest_img_still=latest_img_still,
latest_img_still_ts=latest_img_still_ts,
latest_img_tl=latest_img_tl,
latest_img_tl_ts=latest_img_tl_ts,
time_now=time_now)
def video_feed():
"""Video streaming route. Put this in the src attribute of an img tag."""
return Response(gen(CameraStream()),
mimetype='multipart/x-mixed-replace; boundary=frame')