audiorocket.py

2020-06-03 21:43:31 +02:00
parent dec311d1f4
commit 18929a9450
1 changed files with 131 additions and 0 deletions
@@ -0,0 +1,131 @@
+# piplayer5 - AudioRocket
+# http://www.tilman.de/projekte/audiorocket
+
+import RPi.GPIO as GPIO
+import logging
+import time
+import subprocess
+import select  # for polling zbarcam, see http://stackoverflow.com/a/10759061/3761783
+from socketIO_client import SocketIO, LoggingNamespace # see https://gist.github.com/ivesdebruycker/4b08bdd5415609ce95e597c1d28e9b9e
+from threading import Thread
+
+
+logging.basicConfig(level=logging.INFO, format='%(asctime)s %(levelname)s - %(message)s')
+logging.info('Initializing')
+
+# Configuration
+MUSIC_BASE_DIRECTORY = "mnt/"
+SOUND_SCANNING = "mnt/INTERNAL/audiorocket/sounds/scanning.mp3"
+SOUND_SCAN_FAIL = "mnt/INTERNAL/audiorocket/sounds/fail-05.mp3"
+QR_SCANNER_TIMEOUT = 4
+
+# photo sensor on PIN 5
+PIN_SENSOR = 5
+
+# LED on PIN 22
+PIN_LED = 22
+
+# Buttons on PINs 9, 10 and 11
+PIN_PREV = 10
+PIN_PLAY = 9
+PIN_NEXT = 11
+
+
+GPIO.setmode(GPIO.BCM)
+GPIO.setup(PIN_SENSOR, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+GPIO.setup(PIN_LED, GPIO.OUT)
+GPIO.output(PIN_LED, GPIO.LOW)
+GPIO.setup(PIN_PREV, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+GPIO.setup(PIN_PLAY, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+GPIO.setup(PIN_NEXT, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+
+socketIO = SocketIO('localhost', 3000)
+
+
+def play(uri, service = 'mpd'):
+    socketIO.emit('setRepeat', {'value':False})
+    socketIO.emit('replaceAndPlay', {'service':service,'uri':uri})
+
+def prev_callback(channel):
+    logging.info("PREV")
+    socketIO.emit('prev')
+    ## TODO implement seek
+     
+def play_callback(channel):
+    logging.info("TOGGLE")
+    socketIO.emit('toggle')
+
+def next_callback(channel):
+    logging.info("NEXT")
+    socketIO.emit('next')
+    ## TODO implement seek
+
+def events_thread():
+    socketIO.wait()
+
+
+GPIO.add_event_detect(PIN_PREV, GPIO.FALLING, callback=prev_callback, bouncetime=200)
+GPIO.add_event_detect(PIN_PLAY, GPIO.FALLING, callback=play_callback, bouncetime=200)
+GPIO.add_event_detect(PIN_NEXT, GPIO.FALLING, callback=next_callback, bouncetime=200)
+
+
+try:
+    while True:
+        logging.info('Wait for photo sensor')
+        GPIO.wait_for_edge(PIN_SENSOR, GPIO.RISING)
+        
+        logging.info('Photo sensor active, activating light and camera')
+        play(SOUND_SCANNING)
+        
+        # turn LED on
+        GPIO.output(PIN_LED, GPIO.HIGH)
+        
+        # scan QR code
+        zbarcam = subprocess.Popen(['zbarcam', '--quiet', '--nodisplay', '--raw', '-Sdisable', '-Sqrcode.enable', '/dev/video0'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        
+        poll_obj = select.poll()
+        poll_obj.register(zbarcam.stdout, select.POLLIN)
+        
+        # wait for scan result (or timeout)
+        start_time = time.time()
+        poll_result = False
+        while ((time.time() - start_time) < QR_SCANNER_TIMEOUT and (not poll_result)):
+            poll_result = poll_obj.poll(100)
+
+        if (poll_result):
+            qr_code = zbarcam.stdout.readline().rstrip()
+            qr_code = qr_code.decode("utf-8") # python3
+            logging.info("QR Code: " + qr_code)
+            
+            if qr_code.startswith("http://") or qr_code.startswith("https://"):
+                play(qr_code, 'webradio')
+            elif qr_code.startswith("spotify:"):
+                play(qr_code, 'spop')
+            else:
+                # create full path
+                if (qr_code.startswith("/")):
+                    qr_code = qr_code[1:]
+                full_path = MUSIC_BASE_DIRECTORY + qr_code
+                logging.debug("full_path: " + full_path)
+                play(full_path)
+            
+        else:
+            logging.warning('Timeout on zbarcam')
+            play(SOUND_SCAN_FAIL)
+            
+        zbarcam.terminate()
+        GPIO.output(PIN_LED, GPIO.LOW)
+
+        # wait until sensor is not blocked anymore
+        while (GPIO.input(PIN_SENSOR) == GPIO.HIGH):
+            logging.debug('Wait for sensor to be unblocked')
+            time.sleep(1)
+
+        
+# Exit when Ctrl-C is pressed
+except KeyboardInterrupt:
+    logging.info('Shutdown')
+    
+finally:
+    logging.info('Reset GPIO configuration and close')
+    GPIO.cleanup()