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mpdlisten.py

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+#!/bin/env python
+# This is adapted from mpdlisten.c : https://gist.github.com/sahib/6718139
+# 2024 abelliqueux <contact@arthus.net>
+#
+# MPD client
+import musicpd
+from os import environ
+import sys
+from time import sleep
+# Relay
+import RPi.GPIO as GPIO
+# OLED SSD1306
+from luma.core.interface.serial import i2c
+from luma.core.render import canvas
+from luma.oled.device import ssd1306
+
+# MPD config
+off_delay = 10
+mpd_host='localhost'
+mpd_port=6600
+mpd_passwd = None
+mpd_states = ['play', 'pause', 'stop', 'unknown']
+
+# Relay GPIO setup
+GPIO.setmode(GPIO.BCM)
+RELAIS_1_GPIO = 17
+GPIO.setup(RELAIS_1_GPIO, GPIO.OUT) # GPIO Assign mode
+
+# SSD1306 setup
+serial = i2c(port=1, address=0x3C)
+device = ssd1306(serial)
+
+# TODO: get ctrlc state
+ctrlc_pressed = False
+
+mpd_client_status = {'volume': 'N/A',
+                     'repeat': 'N/A',
+                     'random': 'N/A',
+                     'single': 'N/A',
+                     'consume': 'N/A',
+                     'partition': 'N/A',
+                     'playlist': 'N/A',
+                     'playlistlength': 'N/A',
+                     'mixrampdb': 'N/A',
+                     'state': 'N/A',
+                     'song': 'N/A',
+                     'songid': 'N/A',
+                     'nextsong': 'N/A',
+                     'nextsongid': 'N/A'
+                    }
+mpd_client_currentsong = {'file': 'N/A',
+                          'last-modified': 'N/A',
+                          'format': 'N/A',
+                          'artist': 'N/A',
+                          'albumartist': 'N/A',
+                          'title': 'N/A',
+                          'album': 'N/A',
+                          'track': 'N/A',
+                          'date': 'N/A',
+                          'genre': 'N/A',
+                          'time': 'N/A',
+                          'duration': 'N/A',
+                          'pos': 'N/A',
+                          'id': 'N/A'}
+
+
+# Source host, port from env variables
+if 'MPD_HOST' in environ:
+    mpd_host = environ['MPD_HOST']
+    # Extract password if provided
+    if len(mpd_host.split('@')) > 1:
+        mpd_passwd = mpd_host.split('@')[0]
+        mpd_host = mpd_host.split('@')[1]
+if 'MPD_PORT' in environ:
+    mpd_port = environ['MPD_PORT']
+
+# ~ client.status() # duration, elapsed, volume, repeat, random, single
+# ~ client.currentsong() # artist, title, album
+
+def update_display(device):
+    with canvas(device) as draw:
+        draw.rectangle(device.bounding_box, outline="white", fill="black")
+        draw.text((10, 5), mpd_client_currentsong['artist'], fill="white")
+        draw.text((10, 25), mpd_client_currentsong['title'], fill="white")
+        draw.text((10, 40), "{}/{}".format(mpd_client_status['elapsed'], mpd_client_status['duration']), fill="white")
+        
+
+def main(args):
+    previous_sond_id = None
+    previous_state = None
+    paused_since_seconds = 0
+    # MPDclient setup
+    client = musicpd.MPDClient()
+    if mpd_passwd is not None:
+        client.pwd = mpd_passwd
+    client.host = mpd_host
+    client.port = mpd_port
+    client.mpd_timeout = 5
+    try:
+        client.connect()
+    except musicpd.ConnectionError as errorMessage:
+        print(repr(errorMessage))
+        print("Check host and port are correct.")
+    while ctrlc_pressed is False:
+         mpd_status = client.status()
+         if len(mpd_status):
+            mpd_client_status = mpd_status
+            mpd_client_currentsong = client.currentsong()
+            play_state = client.status()['state']
+            current_song_id = client.status()['songid']
+            if play_state in mpd_states:
+                if play_state == 'play':
+                    if (current_song_id != previous_sond_id) and (previous_state != play_state):
+                        # Relay on
+                        GPIO.output(RELAIS_1_GPIO, GPIO.HIGH)
+                if play_state == 'pause':
+                    paused_since_seconds += 1
+                    if paused_since_seconds > off_delay :
+                        # Relay off
+                        GPIO.output(RELAIS_1_GPIO, GPIO.LOW)
+                if play_state == 'stop' or play_state == 'unknown':
+                    previous_sond_id = None
+                    # Relay off
+                    GPIO.output(RELAIS_1_GPIO, GPIO.LOW)
+            previous_state = play_state
+            sleep(2)
+    client.disconnect()
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv[1:]))