def saveImage(self,settings, width, height, quality, diskSpaceToReserve):
self.keepDiskSpaceFree(diskSpaceToReserve)
time = datetime.now()
filename = filepath + "/" + filenamePrefix + "-%04d%02d%02d-%02d%02d%02d.jpg" % (time.year, time.month, time.day, time.hour, time.minute, time.second)
subprocess.call("raspistill %s -w %s -h %s -t 200 -e jpg -q %s -n -o %s" % (settings, width, height, quality, filename), shell=True)
#print "Captured %s" % filename
Helper.log("Captured %s" % filename)
def keepDiskSpaceFree(self,bytesToReserve):
if (self.getFreeSpace() < bytesToReserve):
for filename in sorted(os.listdir(filepath + "/")):
if filename.startswith(filenamePrefix) and filename.endswith(".jpg"):
os.remove(filepath + "/" + filename)
#print "Deleted %s/%s to avoid filling disk" % (filepath,filename)
Helper.log("Deleted %s/%s to avoid filling disk" % (filepath,filename))
if (self.getFreeSpace() > bytesToReserve):
return
def check_inactivity(self):
try:
while (time.time() - self.latestActivity) < self.maxInactivityTime:
print "Inaktivitaet: Client aktiv?"
time.sleep(5)
Helper.log("Client inactive, diconncted.")
self.write_message("Inactive.. Disconnected!")
self.close()
self.on_close()
except tornado.websocket.WebSocketClosedError:
print "Inaktivitaet: Inaktivter Client hat Seite bereits verlassen.."
def open(self):
#Globals.COUNT_CLIENTS
#print "WebSocket opened"
Helper.log("WebSocket opened")
Globals.COUNT_CLIENTS = Globals.COUNT_CLIENTS + 1
# Variable mit Timestamp der letzten Aktion, wird in on_message aktualisiert
self.latestActivity = time.time()
# Nur 1 Client darf Kamera kontrollieren
if Globals.COUNT_CLIENTS > 1:
self.write_message("Camera already in use.. Disconnected!")
Globals.COUNT_CLIENTS = Globals.COUNT_CLIENTS - 1
self.close()
# Pruefen ob der Client inactiv wird
self.activityThread = thread.start_new_thread(self.check_inactivity,())
def on_message(self, message):
#global PAN_START_ANGLE,TILT_START_ANGLE
self.latestActivity = time.time()
return_message = "Camera moved!"
try:
result = json.loads(message)
Helper.log("JSON erhalten: %s" % (result))
#print result
delta = float(result['delta'])
#Horizontale Bewegung
if result['direction'] == 'h':
#print "Horizontal:"
if (Globals.PAN_START_ANGLE + delta) > self.MAX_ANGLE or (Globals.PAN_START_ANGLE + delta) < self.MIN_ANGLE:
return_message ="Maximum pan stop reached!"
else:
Globals.PAN_START_ANGLE = Globals.PAN_START_ANGLE + delta
#print "Horizontal: Move to " + str(Globals.PAN_START_ANGLE)
Helper.log("Horizontal: Move to " + str(Globals.PAN_START_ANGLE))
Globals.panServoPWM.setCommand(Globals.PAN_START_ANGLE)
elif result['direction'] == 'v':
print "Vertikal:"
#Vertikale Bewegung
if (Globals.TILT_START_ANGLE + delta) > self.MAX_ANGLE or (Globals.TILT_START_ANGLE + delta) < self.MIN_ANGLE:
return_message ="Maximum tilt stop reached!"
else:
Globals.TILT_START_ANGLE = Globals.TILT_START_ANGLE + delta
Helper.log("Vertikal: Move to " + str(Globals.PAN_START_ANGLE))
Globals.tiltServoPWM.setCommand(Globals.TILT_START_ANGLE)
else:
print "initialize.."
# Ergebnis zurueckgeben
self.write_message(return_message)
except ValueError:
#print "invalid json.."
Helper.log("Received invalid JSON")
def exitThreads():
Helper.log("Hoticam duch Signal beendet")
global picamThread
global cameraStream
print ("You pressed Ctrl+C!")
# Threads beenden
try:
if cameraStream.isAlive():
cameraStream.stop()
cameraStream.join()
except AttributeError:
Helper.log("CameraStream Undefined..")
try:
if picamThread.isAlive():
picamThread.stop()
except AttributeError:
print "picamThread Undefined.."
Helper.log("picamThread Undefined..")
sys.exit(0)
def switchStreamOrMotion():
global picamThread
global cameraStream
picamThread = PicamThread()
cameraStream = CameraStream()
while True:
if Globals.COUNT_CLIENTS > 0:
if not cameraStream.isAlive():
Helper.log("Stope Bewegungserkennung")
picamThread.stop()
picamThread.join()
Helper.log("Schalte um auf Streaming")
cameraStream.start()
else:
Helper.log("Stream laeuft..")
else:
# Wenn Stream laeuft, beenden
if cameraStream.isAlive():
cameraStream.stop()
# Wenn Thread beendet wurde, neuen Thread erstellen
if picamThread.stopped():
picamThread = PicamThread()
if not picamThread.isAlive():
Helper.log("Stoppe Streaming")
picamThread.start()
Helper.log("Schalte um auf Bewegungserkennung")
else:
# print "motion laeuft bereits!"
Helper.log("Bewegungserkennung laeuft")
time.sleep(5)
Helper.log("CameraStream Undefined..")
try:
if picamThread.isAlive():
picamThread.stop()
except AttributeError:
print "picamThread Undefined.."
Helper.log("picamThread Undefined..")
sys.exit(0)
application = tornado.web.Application([(r"/", WebSocketServer)])
if __name__ == "__main__":
try:
Helper.log("Starte Hoticam")
# Create ServoPWM instances to control the servos
Globals.tiltServoPWM = ServoPWM(
TILT_PWM_PIN,
minAnglePulseWidthPair=(0.0, 2350),
midAnglePulseWidthPair=(90.0, 1500),
maxAnglePulseWidthPair=(180.0, 500.0),
)
Globals.panServoPWM = ServoPWM(
PAN_PWM_PIN,
minAnglePulseWidthPair=(0.0, 610.0),
midAnglePulseWidthPair=(90.0, 1500),
maxAnglePulseWidthPair=(180.0, 2350),
)
def on_close(self):
#global COUNT_CLIENTS
Globals.COUNT_CLIENTS = Globals.COUNT_CLIENTS - 1
Helper.log("WebSocket closed")