first version of pyplayer3.py

code/piplayer3.py

@@ -6,7 +6,10 @@ import time
 import subprocess
 import select  # for polling zbarcam, see http://stackoverflow.com/a/10759061/3761783
 import os
+import requests
 
+logging.basicConfig(level=logging.INFO, format='%(asctime)s %(levelname)s - %(message)s')
+logging.info('Initializing')
 
 # Configuration
 MUSIC_BASE_DIRECTORY = "/home/pi/music/"
@@ -16,7 +19,8 @@ SOUND_SCAN_FAIL = "/home/pi/piplayer2/sounds/fail-05.mp3"
 SOUND_PLAYBACK_ERROR = "/home/pi/piplayer2/sounds/error.mp3"
 QR_SCANNER_TIMEOUT = 3
 
-MUSIC_EXTENSIONS = ['.aac', '.ac3', '.aiff', '.amr', '.au', '.flac', '.m4a', '.mid', '.mka', '.mp3', '.ogg', '.ra', '.voc', '.wav', '.wma']
+MOPIDY_URL = 'http://127.0.0.1:6680/mopidy/rpc'
+MUSIC_EXTENSIONS = ('.aac', '.ac3', '.aiff', '.amr', '.au', '.flac', '.m4a', '.mid', '.mka', '.mp3', '.ogg', '.ra', '.voc', '.wav', '.wma')
 
 # photo sensor on PIN 17
 PIN_SENSOR = 17
@@ -33,9 +37,6 @@ PIN_PLAY = 10
 PIN_NEXT = 11
 
 
-logging.basicConfig(level=logging.INFO, format='%(asctime)s %(levelname)s - %(message)s')
-logging.info('Initializing')
-
 GPIO.setmode(GPIO.BCM)
 
 GPIO.setup(PIN_SENSOR, GPIO.IN)
@@ -50,61 +51,72 @@ 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)
 
-
-position = 0
-
-def btn1_callback(channel):
-    logging.debug('PREV_CALLBACK')
-    out, err = subprocess.Popen(['mocp','-Q', '%state'], stdout=subprocess.PIPE).communicate()
-    if (out.decode("utf-8").startswith('PLAY')):
-        out, err = subprocess.Popen(['mocp','-Q', '%cs'], stdout=subprocess.PIPE).communicate()
-        position = int(out.decode("utf-8"))
-        if (position < 4):
-            logging.debug('mocp --previous')
-            subprocess.call(["mocp", "--previous"])
-        else:
-            logging.debug('mocp --jump 0s')
-            subprocess.call(["mocp", "--jump", "0s"])
-       
-def btn2_callback(channel):
-    logging.debug('mocp --toggle-pause')
-    subprocess.call(["mocp", "--toggle-pause"])
-
-def btn3_callback(channel):
-    logging.debug('mocp --next')
-    subprocess.call(["mocp", "--next"])
-
-def clear_playlist():
-    return True
-
-def add_file(filename):
-    return True
-
-def start_playing():
-    return True
-
-def play_sound(filename):
-    clear_playlist()
-    add_file(filename)
-    start_playing()
-    
-
 GPIO.add_event_detect(PIN_PREV, GPIO.FALLING, callback=btn1_callback, bouncetime=400)
 GPIO.add_event_detect(PIN_PLAY, GPIO.FALLING, callback=btn2_callback, bouncetime=400)
 GPIO.add_event_detect(PIN_NEXT, GPIO.FALLING, callback=btn3_callback, bouncetime=400)
 
+
+
+def call(method, params=None):
+    if (params is None):
+        json = '{"jsonrpc": "2.0", "id": 1, "method": "' + method + '"}'
+    else:
+        json = '{"jsonrpc": "2.0", "id": 1, "method": "' + method + '" , "params": ' + params + '}'
+    
+    response = requests.post(MOPIDY_URL, data=json)
+    logging.debug(response.text)
+    return response
+
+def add_uri(filename):
+    logging.debug('Adding ' + filename)
+    call('core.tracklist.add', '{"uri": "' + filename + '"}')
+
+def play_sound(filename):
+    call('core.tracklist.clear')
+    add_uri(filename)
+    call('core.playback.play')
+
+def list_files(dir):
+    r = []
+    for path, dirs, files in os.walk(dir):
+        dirs.sort()
+        files.sort()
+        for name in files:
+            r.append(os.path.join(path, name))
+    return r
+
+
+
+def btn1_callback(channel):
+    json = call('core.playback.get_time_position').json()
+    position = json['result']
+    if (position < 4):
+        call('core.playback.previous')
+    else:
+        call('core.playback.seek', '{ "time_position": 0 }')
+       
+def btn2_callback(channel):
+    json = call('core.playback.get_time_position').json()
+    state = json['result']
+    if (state == 'playing'):
+        call('core.playback.pause')
+    else:
+        call('core.playback.play')
+
+def btn3_callback(channel):
+    call('core.playback.next')
+
+
+
 try:
-    logging.info('Start moc server')
+    play_sound(SOUND_OK)
-    subprocess.call(["mocp", "--server"])
-    subprocess.call(["mocp", "--clear"])
-    subprocess.call(["mocp", "-l", SOUND_OK])
     
     while True:
         logging.debug('Wait for photo sensor')
         GPIO.wait_for_edge(PIN_SENSOR, GPIO.RISING)
         
         logging.debug('Photo sensor active, activating light and camera')
-        subprocess.call(["mocp", "-l", SOUND_SCANNING])
+        play_sound(SOUND_SCANNING)
         
         # turn LED on
         GPIO.output(PIN_LED, GPIO.HIGH)
@@ -124,66 +136,50 @@ try:
         if (poll_result):
             
             try:
-                qr_code = zbarcam.stdout.readline().rstrip()
+                # play confirmation sound
-                qr_code = qr_code.decode("utf-8") # python3
+                play_sound(SOUND_OK)
-                logging.info("QR Code: {}".format(qr_code))
                 
-                if (not qr_code.startswith("http://")):
+                call('core.tracklist.clear')
-                    # create full path
-                    full_path = MUSIC_BASE_DIRECTORY + qr_code
-                    logging.debug("Full Path {}".format(full_path))
-                    
-                    if (not os.path.isfile(full_path)):
-                        logging.debug("not a file, add as directory")
-                        directory = full_path
-                        logging.debug("Directory {}".format(directory))
-                    else:
-                        logging.debug("it's a file")
-                        directory = os.path.dirname(os.path.realpath(full_path))
-                        filename = os.path.basename(full_path)
-                        logging.debug("Directory {}".format(directory))
-                        logging.debug("Filename {}".format(filename))
-                    
-                    os.chdir(directory)
-                    
-                else:
-                    logging.debug("URL, open as stream")
-                    stream_url = qr_code
-
-                subprocess.call(["mocp", "--clear"])
-                subprocess.call(["mocp", "--stop"])
-
                 logging.debug("Stopped")
                 
-                # play confirmation sound
+                qr_code = zbarcam.stdout.readline().rstrip()
-                subprocess.call(["mocp", "-l", SOUND_OK])
+                qr_code = qr_code.decode("utf-8") # python3
+                logging.info("QR Code: " + qr_code)
                 
-                if ('stream_url' in locals()):
+                if (not qr_code.startswith("http://", "spotify:")):
-                    logging.debug("Add stream")
+                    # create full path
-                    subprocess.check_call(["mocp", "-a", stream_url])
+                    full_path = MUSIC_BASE_DIRECTORY + qr_code
-                    del stream_url
+                    
-                elif ('filename' in locals()):
+                    if (not os.path.isfile(full_path)):
-                    logging.debug("Add file {}".format(filename))
+                        logging.debug("Not a file, recursively add all audio files in directory")
-                    subprocess.check_call(["mocp", "-a", filename])
+                        filenames = list_files(full_path)
-                    del filename
+                        for filename in filenames:
+                            if filename.lower().endswith(MUSIC_EXTENSIONS):
+                                file_uri = 'file://' + filename
+                                add_uri(file_uri)
+                        
+                    else:
+                        logging.debug("It's a file")
+                        add_uri("file://" + full_path)
+                    
                 else:
-                    logging.debug("Add directory {}".format(directory))
+                    logging.debug("URL, open directly")
-                    subprocess.check_call(["mocp", "-a", "."])
+                    add_uri(qr_code)
                 
                 logging.debug("Start playback")
-                subprocess.check_call(["mocp", "-p"])
+                call('core.playback.play')
                 
             except subprocess.CalledProcessError as e:
                 logging.error("Error starting playback, mocp returned {}".format(e.returncode))
                 logging.error(e.output)
-                subprocess.call(["mocp", "-l", SOUND_PLAYBACK_ERROR])
+                play_sound(SOUND_PLAYBACK_ERROR)
             except FileNotFoundError as e:
                 logging.error("Could not open directory {}".format(directory))
-                subprocess.call(["mocp", "-l", SOUND_PLAYBACK_ERROR])
+                play_sound(SOUND_PLAYBACK_ERROR)
 
         else:
             logging.warning('Timeout on zbarcam')
-            subprocess.call(["mocp", "-l", SOUND_SCAN_FAIL])
+            play_sound(SOUND_SCAN_FAIL)
             
         zbarcam.terminate()
         
@@ -201,10 +197,5 @@ except KeyboardInterrupt:
     logging.info('Shutdown')
     
 finally:
-    logging.info('Close moc server')
-    subprocess.call(["mocp", "--exit"])
     logging.info('Reset GPIO configuration and close')
     GPIO.cleanup()
-
-
-

code/test/call_mopidy.py

@@ -31,7 +31,7 @@ def start_playing():
 
 def play_sound(filename):
     clear_playlist()
-    add_file(filename)
+    add_uri(filename)
     start_playing()
 
 def list_files(dir):
@@ -56,7 +56,7 @@ for filename in filenames:
 
 start_playing()
 
-time.sleep(3)
+time.sleep(2)
 json = call('core.playback.get_time_position').json()
 print(json['result'])
 

notes.md

@@ -21,6 +21,10 @@ https://docs.mopidy.com/en/latest/api/core/#mopidy.core.mopidy.core.LibraryContr
 
 https://docs.mopidy.com/en/latest/ext/file/
 
+ncmpcpp
+https://docs.mopidy.com/en/latest/service/
+
+
 curl -d '{"jsonrpc": "2.0", "id": 1, "method": "core.describe"}' http://127.0.0.1:6680/mopidy/rpc
 
 curl -d '{"jsonrpc": "2.0", "id": 1, "method": "core.playback.pause"}' http://127.0.0.1:6680/mopidy/rpc
@@ -32,23 +36,17 @@ curl -X POST -H Content-Type:application/json -d '{"jsonrpc": "2.0", "id": 1, "m
 curl -X POST -H Content-Type:application/json -d '{"jsonrpc": "2.0", "id": 1, "method": "core.tracklist.add" , "params": {"uri": "spotify:track:5tf1VVWniHgryyumXyJM7w"}}' http://127.0.0.1:6680/mopidy/rpc
 curl -X POST -H Content-Type:application/json -d '{"jsonrpc": "2.0", "id": 1, "method": "core.tracklist.add" , "params": {"uri": "file:///home/tilman/Musik/04%20-%20The%20Funeral.mp3"}}' http://127.0.0.1:6680/mopidy/rpc
 curl -X POST -H Content-Type:application/json -d '{"jsonrpc": "2.0", "id": 1, "method": "core.tracklist.add" , "params": {"uri": "http://www.wdr.de/wdrlive/media/kiraka.m3u"}}' http://127.0.0.1:6680/mopidy/rpc
-curl -X POST -H Content-Type:application/json -d '{"jsonrpc": "2.0", "id": 1, "method": "core.tracklist.add" , "params": {"uri": "/home/tilman/Musik/04 - The Funeral.mp3"}}' http://127.0.0.1:6680/mopidy/rpc
 
 curl -d '{"jsonrpc": "2.0", "id": 1, "method": "core.playback.play"}' http://127.0.0.1:6680/mopidy/rpc
 
 
-
-
-
-
-https://docs.mopidy.com/en/latest/service/
-
 https://open.spotify.com/track/3jQyadhLTxpxadQlkFh2b8
 https://open.spotify.com/episode/1o8HWRR0mx5TfyxLlnKv8e
 https://open.spotify.com/show/4zQKHBLkM3puG5n3jAU2H4
 https://open.spotify.com/album/0BajiiFeEZv9eEx07Hw2C0
 
-ncmpcpp
+
+
 
 ## Hardware
 - PHAT DAC installieren - http://www.instructables.com/id/Multiroom-Client-With-Raspberry-Pi-ZERO-and-PHAT-D/?ALLSTEPS