MPD: joystick and interrupt handling
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mpd_dot3k.py
111
mpd_dot3k.py
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@ -1,8 +1,16 @@
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#!/usr/bin/env python3
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# Author: raspbeguy <raspbeguy@hashtagueule.fr>
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# 2017-03-12
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# License: MIT
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import queue
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import threading
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import signal
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import sys
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import dot3k.lcd as lcd
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import dot3k.backlight as backlight
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import dot3k.joystick as nav
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from mpd import MPDClient
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rotate_pause = 10 # delay in rotation steps
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@ -57,7 +65,7 @@ def display():
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album = ''
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song_file = '' # Useful to determine if current song actually changed
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step_title = step_artist = step_album = 0
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while True:
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while run_event.is_set():
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try:
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arg = q.get(timeout=0.2)
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status = arg['status']['state']
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@ -69,18 +77,17 @@ def display():
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else:
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lcd.create_char(0, char_stop)
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if song_file != arg['song']['file']:
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song_file = arg['song']['file']
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title = arg['song']['title']
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artist = arg['song']['artist']
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album = arg['song']['album']
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if status not in {'play','pause'} or song_file != arg['song']['file']:
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song_file = arg['song']['file'] if 'file' in arg['song'].keys() else ''
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title = arg['song']['title'] if 'title' in arg['song'].keys() else ''
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artist = arg['song']['artist'] if 'artist' in arg['song'].keys() else ''
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album = arg['song']['album'] if 'album' in arg['song'].keys() else ''
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lcd.clear()
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lcd.set_cursor_position(0, 0)
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lcd.write(chr(0))
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step_title = step_artist = step_album = 0
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delay_title = delay_artist = delay_album = rotate_pause
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lcd.clear()
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lcd.set_cursor_position(0, 0)
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lcd.write(chr(0))
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if len(title) <= 15:
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lcd.set_cursor_position(1, 0)
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@ -93,24 +100,27 @@ def display():
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lcd.write(album)
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except queue.Empty:
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if step_title == 0 and delay_title > 0:
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delay_title -= 1
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else:
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step_title = (step_title + 1) % (len(title) + 3)
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if delay_title == 0:
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delay_title = rotate_pause
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if step_artist == 0 and delay_artist > 0:
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delay_artist -= 1
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else:
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step_artist = (step_artist + 1) % (len(artist) + 3)
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if delay_title == 0:
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delay_artist = rotate_pause
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if step_album == 0 and delay_album > 0:
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delay_album -= 1
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else:
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step_album = (step_album + 1) % (len(album) + 3)
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if delay_title == 0:
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delay_album = rotate_pause
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if len(title) > 15:
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if step_title == 0 and delay_title > 0:
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delay_title -= 1
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else:
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step_title = (step_title + 1) % (len(title) + 3)
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if delay_title == 0:
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delay_title = rotate_pause
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if len(artist) > 16:
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if step_artist == 0 and delay_artist > 0:
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delay_artist -= 1
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else:
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step_artist = (step_artist + 1) % (len(artist) + 3)
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if delay_artist == 0:
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delay_artist = rotate_pause
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if len(album) > 16:
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if step_album == 0 and delay_album > 0:
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delay_album -= 1
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else:
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step_album = (step_album + 1) % (len(album) + 3)
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if delay_album == 0:
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delay_album = rotate_pause
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if len(title) > 15:
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lcd.set_cursor_position(1, 0)
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@ -121,14 +131,53 @@ def display():
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if len(album) > 16:
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lcd.set_cursor_position(0, 2)
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lcd.write(stringrotate(album, 16, step_album))
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lcd.clear()
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@nav.on(nav.BUTTON)
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def button_center(pin):
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client = MPDClient() # Please close your eyes
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client.connect("localhost", 6600) # Dirty dirty dirty...
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if client.status()['state'] in {'play','pause'}:
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client.pause()
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else:
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client.play()
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client.close() # Okay, you can open your eyes
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@nav.on(nav.LEFT)
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def button_left(pin):
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client = MPDClient() # Please close your eyes
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client.connect("localhost", 6600) # Dirty dirty dirty...
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client.previous()
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client.close() # Okay, you can open your eyes
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@nav.on(nav.RIGHT)
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def button_right(pin):
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client = MPDClient() # Please close your eyes
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client.connect("localhost", 6600) # Dirty dirty dirty...
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client.next()
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client.close() # Okay, you can open your eyes
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def on_exit(sig, func=None):
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run_event.clear()
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t_display.join()
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backlight.rgb(0, 0, 0)
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backlight.rgb(0, 0, 0)
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print("Screen sound be blank and light off now.")
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sys.exit(0)
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backlight.rgb(55, 55, 55)
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run_event = threading.Event()
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run_event.set()
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client = MPDClient()
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client.connect("localhost", 6600)
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t_display = threading.Thread(name='display',target=display)
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t_display.start()
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while True:
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q.put({'song': client.currentsong(), 'status' : client.status()})
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client.idle('player')
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signal.signal(signal.SIGTERM, on_exit)
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try:
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while True:
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q.put({'song': client.currentsong(), 'status' : client.status()})
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client.idle('player')
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except KeyboardInterrupt:
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on_exit(None)
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