def main():
com = Communication()
sound = Sound()
try:
executor = concurrent.futures.ThreadPoolExecutor(max_workers=2)
# start MIDI as a concurrent executor
sound.quit_midi = False
midi_sender = executor.submit(send_midi, sound)
# init serial communication
# ser = com.init_serial()
com.init_serial()
# start serial as a concurrent executor
quit_recv = False
serial_receiver = executor.submit(recv_serial, com, sound)
# start video stream
video_stream(com , sound)
# this block is for stoping process with terminating receive after video_stream()finished
while True:
try:
key = input()
time.sleep(1) # wait for checking input
if(key == KEY_RECEIVER_STOP):
print("accepted f command for stopping \n")
break
# if anything from standard input, write back to AVR.
key += "\n"
com.ser.write(str.encode(key))
except:
print(traceback.format_exc())
print("\nstop receiver and midi sender thread\n")
exit(1)
except concurrent.futures.CancelledError:
print(traceback.format_exc())
print("executor is cancelled\n")
except:
print(traceback.format_exc())
finally:
print("main is waiting for stopping threas")
# do not wait the queue empty as AVR is working asynchronouly
# serial_q.join()
com.quit_recv = True
sound.quit_midi = True
# wait until executor(receiver) finishes
while not serial_receiver.done():
time.sleep(1)
while not midi_sender.done():
time.sleep(1)
print("main finished")
exit(0)
