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Added mopidy backend functionalities

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This commit is contained in:
Fabio Manganiello 2019-02-12 20:34:17 +01:00
parent 7b99842225
commit 148d25f1cb
3 changed files with 185 additions and 16 deletions
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6
platypush/backend/http/static/js/music.mpd.js
View file

@ -117,15 +117,20 @@ $(document).ready(function() {
break;
}
if ('volume' in status) {
$volumeCtrl.val(parseInt(status.volume));
}
if ('repeat' in status) {
var repeat = parseInt(status.repeat);
if (repeat) {
$repeatBtn.addClass('enabled');
} else {
$repeatBtn.removeClass('enabled');
}
}
if ('random' in status) {
var random = parseInt(status.random);
if (random) {
$randomBtn.addClass('enabled');
@ -133,6 +138,7 @@ $(document).ready(function() {
$randomBtn.removeClass('enabled');
}
}
}
if (track) {
$curTrack.find('.artist').text(track.artist);

153
platypush/backend/music/mopidy.py
View file

@ -1,11 +1,16 @@
import asyncio
import json
import queue
import re
import threading
import time
from platypush.backend import Backend
from platypush.message.event.music import MusicPlayEvent, MusicPauseEvent, \
MusicStopEvent, NewPlayingTrackEvent, PlaylistChangeEvent, VolumeChangeEvent, \
PlaybackConsumeModeChangeEvent, PlaybackSingleModeChangeEvent, \
PlaybackRepeatModeChangeEvent, PlaybackRandomModeChangeEvent
PlaybackRepeatModeChangeEvent, PlaybackRandomModeChangeEvent, \
MuteChangeEvent, SeekChangeEvent
class MusicMopidyBackend(Backend):
@ -25,6 +30,8 @@ class MusicMopidyBackend(Backend):
* :class:`platypush.message.event.music.NewPlayingTrackEvent` if a new track is being played
* :class:`platypush.message.event.music.PlaylistChangeEvent` if the main playlist has changed
* :class:`platypush.message.event.music.VolumeChangeEvent` if the main volume has changed
* :class:`platypush.message.event.music.MuteChangeEvent` if the mute status has changed
* :class:`platypush.message.event.music.SeekChangeEvent` if a track seek event occurs
Requires:
* **websockets** (``pip install websockets``)
@ -37,20 +44,158 @@ class MusicMopidyBackend(Backend):
self.server = server
self.port = int(port)
self.url = 'ws://{}:{}/mopidy/ws'.format(server, port)
self._msg_id = 0
self._latest_status = self._get_tracklist_status()
async def poll_events(self):
async def _poll_events(self):
import websockets
try:
while not self.should_stop():
async with websockets.connect(self.url) as ws:
msg = await ws.recv()
# TODO handle the message
if isinstance(msg, bytes):
msg = msg.decode()
self._handle_msg(msg)
except Exception as e:
self.logger.warning('The Mopidy backend raised an exception')
self.logger.exception(e)
time.sleep(2) # Wait a bit before retrying
def _parse_track(self, track, pos=None):
if not track:
return {}
conv_track = track.get('track', {}).copy()
conv_track['id'] = track.get('tlid')
conv_track['file'] = conv_track['uri']
del conv_track['uri']
if 'artists' in conv_track:
conv_track['artist'] = conv_track['artists'][0]
del conv_track['artists']
if 'album' in conv_track:
conv_track['album'] = conv_track['album']['name']
if 'length' in conv_track:
conv_track['time'] = conv_track['length']/1000 \
if conv_track['length'] else conv_track['length']
del conv_track['length']
if pos is not None:
conv_track['pos'] = pos
return conv_track
def _communicate(self, msg):
import websockets
if isinstance(msg, str):
msg = json.loads(msg)
self._msg_id += 1
msg['jsonrpc'] = '2.0'
msg['id'] = self._msg_id
msg = json.dumps(msg)
resp_queue = queue.Queue()
async def get_response():
async with websockets.connect(self.url) as ws:
await ws.send(msg)
response = await ws.recv()
if isinstance(response, bytes):
response = response.decode()
resp_queue.put(json.loads(response))
loop = asyncio.get_event_loop()
loop.run_until_complete(get_response())
return resp_queue.get().get('result')
def _get_tracklist_status(self):
return {
'repeat': self._communicate({
'method': 'core.tracklist.get_repeat'}),
'random': self._communicate({
'method': 'core.tracklist.get_random'}),
'single': self._communicate({
'method': 'core.tracklist.get_single'}),
'consume': self._communicate({
'method': 'core.tracklist.get_consume'}),
}
def _handle_msg(self, msg):
msg = json.loads(msg)
event = msg.get('event')
if not event:
return
status = {}
track = event.get('tl_track', {})
if event == 'track_playback_paused':
status['state'] = 'pause'
track = self._parse_track(track)
if not track:
return
self.bus.post(MusicPauseEvent(status=status, track=track))
elif event == 'track_playback_resumed':
status['state'] = 'play'
track = self._parse_track(track)
if not track:
return
self.bus.post(MusicPlayEvent(status=status, track=track))
elif event == 'track_playback_ended':
status['state'] = 'stop'
track = self._parse_track(track)
if not track:
return
self.bus.post(MusicPlayEvent(status=status, track=track))
elif event == 'track_playback_started':
track = self._parse_track(track)
if not track:
return
self.bus.post(NewPlayingTrackEvent(status=status, track=track))
elif event == 'stream_title_changed':
m = re.match('^\s*(.+?)\s+-\s+(.*)\s*$', event.get('title', ''))
if not m:
return
track['artist'] = m.group(1)
track['title'] = m.group(2)
self.bus.post(NewPlayingTrackEvent(status=status, track=track))
elif event == 'volume_changed':
status['volume'] = msg.get('volume')
self.bus.post(VolumeChangeEvent(volume=status['volume'],
status=status, track=track))
elif event == 'mute_changed':
status['mute'] = msg.get('mute')
self.bus.post(MuteChangeEvent(mute=status['mute'],
status=status, track=track))
elif event == 'seeked':
status['position'] = msg.get('time_position')
self.bus.post(SeekChangeEvent(position=status['position'],
status=status, track=track))
elif event == 'tracklist_changed':
tracklist = [self._parse_track(t, pos=i)
for i, t in self._communicate({
'method': 'core.tracklist.get_tl_tracks' })]
self.bus.post(PlaylistChangeEvent(changes=tracklist))
elif event == 'options_changed':
new_status = self._get_tracklist_status()
if new_status['random'] != self._latest_status['random']:
self.bus.post(PlaybackRandomModeChangeEvent(state=new_status['random']))
if new_status['repeat'] != self._latest_status['repeat']:
self.bus.post(PlaybackRepeatModeChangeEvent(state=new_status['repeat']))
if new_status['single'] != self._latest_status['single']:
self.bus.post(PlaybackSingleModeChangeEvent(state=new_status['single']))
if new_status['consume'] != self._latest_status['consume']:
self.bus.post(PlaybackConsumeModeChangeEvent(state=new_status['consume']))
self._latest_status = new_status
def run(self):
super().run()
@ -58,7 +203,7 @@ class MusicMopidyBackend(Backend):
asyncio.set_event_loop(loop)
while not self.should_stop():
loop.run_until_complete(self.poll_events())
loop.run_until_complete(self._poll_events())
# vim:sw=4:ts=4:et:

18
platypush/message/event/music/__init__.py
View file

@ -43,6 +43,15 @@ class MusicPauseEvent(MusicEvent):
super().__init__(*args, **kwargs)
class SeekChangeEvent(MusicEvent):
"""
Event fired upon seek change
"""
def __init__(self, position, status=None, track=None, *args, **kwargs):
super().__init__(position=position, status=status, track=track, *args, **kwargs)
class VolumeChangeEvent(MusicEvent):
"""
Event fired upon volume change
@ -52,6 +61,15 @@ class VolumeChangeEvent(MusicEvent):
super().__init__(volume=volume, status=status, track=track, *args, **kwargs)
class MuteChangeEvent(MusicEvent):
"""
Event fired upon mute change
"""
def __init__(self, mute, status=None, track=None, *args, **kwargs):
super().__init__(mute=mute, status=status, track=track, *args, **kwargs)
class PlaybackRepeatModeChangeEvent(MusicEvent):
"""
Event fired upon repeat mode change