153 lines
4.5 KiB
Python
153 lines
4.5 KiB
Python
# piplayer4 - Qudio
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# http://www.tilman.de/projekte/qudio
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import RPi.GPIO as GPIO
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import logging
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import time
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import subprocess
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import select # for polling zbarcam, see http://stackoverflow.com/a/10759061/3761783
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from socketIO_client import SocketIO, LoggingNamespace # see https://gist.github.com/ivesdebruycker/4b08bdd5415609ce95e597c1d28e9b9e
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from threading import Thread
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logging.basicConfig(level=logging.INFO, format='%(asctime)s %(levelname)s - %(message)s')
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logging.info('Initializing')
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# Configuration
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MUSIC_BASE_DIRECTORY = "mnt/NAS/"
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SOUND_SCANNING = "mnt/INTERNAL/sounds/scanning.mp3"
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SOUND_SCAN_FAIL = "mnt/INTERNAL/sounds/fail-05.mp3"
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QR_SCANNER_TIMEOUT = 4
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# photo sensor on PIN 5
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PIN_SENSOR = 5
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# LED on PIN 22
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PIN_LED = 22
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# Buttons on PINs 9, 10 and 11
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PIN_PREV = 9
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PIN_NEXT = 10
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PIN_PLAY = 11
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GPIO.setmode(GPIO.BCM)
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GPIO.setup(PIN_SENSOR, GPIO.IN, pull_up_down=GPIO.PUD_UP)
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GPIO.setup(PIN_LED, GPIO.OUT)
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GPIO.output(PIN_LED, GPIO.LOW)
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GPIO.setup(PIN_PREV, GPIO.IN, pull_up_down=GPIO.PUD_UP)
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GPIO.setup(PIN_PLAY, GPIO.IN, pull_up_down=GPIO.PUD_UP)
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GPIO.setup(PIN_NEXT, GPIO.IN, pull_up_down=GPIO.PUD_UP)
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is_playing = False # for toggling play/pause (stores the current status from the pushState events)
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socketIO = SocketIO('localhost', 3000)
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def play(uri, service = 'mpd'):
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socketIO.emit('replaceAndPlay', {'service':service,'uri':uri})
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def prev_callback(channel):
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logging.info("PREV")
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socketIO.emit('prev')
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## TODO implement jump to beginning for first x seconds (or if first track)
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## TODO implement seek
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def play_callback(channel):
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global is_playing
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if is_playing:
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logging.info("PAUSE")
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socketIO.emit('pause')
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else:
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logging.info("PLAY")
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socketIO.emit('play')
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def next_callback(channel):
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logging.info("NEXT")
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socketIO.emit('next')
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## TODO implement seek
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def on_pushState(*args):
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logging.debug(args[0]['status'])
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global is_playing
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if args[0]['status'] == 'play':
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is_playing = True
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else:
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is_playing = False
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def events_thread():
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socketIO.wait()
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GPIO.add_event_detect(PIN_PREV, GPIO.FALLING, callback=prev_callback, bouncetime=400)
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GPIO.add_event_detect(PIN_PLAY, GPIO.FALLING, callback=play_callback, bouncetime=400)
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GPIO.add_event_detect(PIN_NEXT, GPIO.FALLING, callback=next_callback, bouncetime=400)
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try:
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socketIO.on('pushState', on_pushState)
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listener_thread = Thread(target=events_thread)
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listener_thread.daemon = True
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listener_thread.start()
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while True:
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logging.info('Wait for photo sensor')
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GPIO.wait_for_edge(PIN_SENSOR, GPIO.FALLING)
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logging.info('Photo sensor active, activating light and camera')
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play(SOUND_SCANNING)
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# turn LED on
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GPIO.output(PIN_LED, GPIO.HIGH)
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# scan QR code
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zbarcam = subprocess.Popen(['zbarcam', '--quiet', '--nodisplay', '--raw', '-Sdisable', '-Sqrcode.enable', '--prescale=320x240', '/dev/video0'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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poll_obj = select.poll()
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poll_obj.register(zbarcam.stdout, select.POLLIN)
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# wait for scan result (or timeout)
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start_time = time.time()
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poll_result = False
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while ((time.time() - start_time) < QR_SCANNER_TIMEOUT and (not poll_result)):
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poll_result = poll_obj.poll(100)
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if (poll_result):
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qr_code = zbarcam.stdout.readline().rstrip()
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qr_code = qr_code.decode("utf-8") # python3
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logging.info("QR Code: " + qr_code)
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if qr_code.startswith("http://"):
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play(qr_code, 'webradio')
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elif qr_code.startswith("spotify:"):
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play(qr_code, 'spop')
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else:
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# create full path
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if (qr_code.startswith("/")):
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qr_code = qr_code[1:]
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full_path = MUSIC_BASE_DIRECTORY + qr_code
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logging.debug("full_path: " + full_path)
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play(full_path)
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else:
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logging.warning('Timeout on zbarcam')
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play(SOUND_SCAN_FAIL)
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zbarcam.terminate()
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GPIO.output(PIN_LED, GPIO.LOW)
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# wait until sensor is not blocked anymore
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if (GPIO.input(PIN_SENSOR) == GPIO.LOW):
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GPIO.wait_for_edge(PIN_SENSOR, GPIO.RISING)
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time.sleep(1)
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# Exit when Ctrl-C is pressed
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except KeyboardInterrupt:
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logging.info('Shutdown')
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finally:
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logging.info('Reset GPIO configuration and close')
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GPIO.cleanup()
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