platypush/platypush/plugins/media/vlc.py

407 lines
13 KiB
Python
Raw Normal View History

2019-02-20 17:17:30 +01:00
import os
import re
import threading
from platypush.context import get_bus, get_plugin
from platypush.plugins.media import PlayerState, MediaPlugin
from platypush.message.event.media import MediaPlayEvent, MediaPlayRequestEvent, \
MediaPauseEvent, MediaStopEvent, MediaSeekEvent, MediaVolumeChangedEvent, \
MediaMuteChangedEvent, NewPlayingMediaEvent
from platypush.plugins import action
class MediaVlcPlugin(MediaPlugin):
"""
Plugin to control vlc instances
Requires:
* **python-vlc** (``pip install python-vlc``)
* **vlc** executable on your system
"""
def __init__(self, args=None, fullscreen=False, volume=100, *argv, **kwargs):
2019-02-20 17:17:30 +01:00
"""
Create the vlc wrapper.
:param args: List of extra arguments to pass to the VLC executable (e.g.
``['--sub-language=en', '--snapshot-path=/mnt/snapshots']``)
:type args: list[str]
:param fullscreen: Set to True if you want media files to be opened in
fullscreen by default (can be overridden by `.play()`) (default: False)
:type fullscreen: bool
2019-02-20 17:17:30 +01:00
:param volume: Default media volume (default: 100)
:type volume: int
"""
2019-02-20 17:17:30 +01:00
super().__init__(*argv, **kwargs)
2019-02-20 17:17:30 +01:00
self._args = args or []
self._instance = None
2019-02-20 17:17:30 +01:00
self._player = None
self._latest_seek = None
self._default_fullscreen = fullscreen
self._default_volume = volume
2019-02-20 17:17:30 +01:00
self._on_stop_callbacks = []
@classmethod
def _watched_event_types(cls):
import vlc
return [getattr(vlc.EventType, evt) for evt in [
'MediaPlayerLengthChanged', 'MediaPlayerMediaChanged',
'MediaDurationChanged', 'MediaPlayerMuted',
'MediaPlayerUnmuted', 'MediaPlayerOpening', 'MediaPlayerPaused',
'MediaPlayerPlaying', 'MediaPlayerPositionChanged',
'MediaPlayerStopped', 'MediaPlayerTimeChanged', 'MediaStateChanged',
'MediaPlayerForward', 'MediaPlayerBackward',
'MediaPlayerEndReached', 'MediaPlayerTitleChanged',
'MediaPlayerAudioVolume',
] if hasattr(vlc.EventType, evt)]
def _init_vlc(self, resource):
import vlc
self._reset_state()
2019-02-20 17:17:30 +01:00
for k,v in self._env.items():
os.environ[k] = v
self._instance = vlc.Instance(*self._args)
self._player = self._instance.media_player_new(resource)
2019-02-20 17:17:30 +01:00
for evt in self._watched_event_types():
self._player.event_manager().event_attach(
eventtype=evt, callback=self._event_callback())
def _reset_state(self):
self._latest_seek = None
if self._player:
self._player.release()
self._player = None
if self._instance:
self._instance.release()
self._instance = None
2019-02-20 17:17:30 +01:00
def _event_callback(self):
def callback(event):
from vlc import EventType
self.logger.debug('Received vlc event: {}'.format(event))
bus = get_bus()
if event.type == EventType.MediaPlayerPlaying:
bus.post(MediaPlayEvent(resource=self._get_current_resource()))
elif event.type == EventType.MediaPlayerPaused:
bus.post(MediaPauseEvent())
elif event.type == EventType.MediaPlayerStopped or \
event.type == EventType.MediaPlayerEndReached:
self._reset_state()
2019-02-20 17:17:30 +01:00
bus.post(MediaStopEvent())
for callback in self._on_stop_callbacks:
callback()
elif event.type == EventType.MediaPlayerTitleChanged:
bus.post(NewPlayingMediaEvent(resource=event.u.new_title))
elif event.type == EventType.MediaPlayerMediaChanged:
bus.post(NewPlayingMediaEvent(resource=event.u.filename))
elif event.type == EventType.MediaPlayerLengthChanged:
bus.post(NewPlayingMediaEvent(resource=self._get_current_resource()))
elif event.type == EventType.MediaPlayerTimeChanged:
pos = float(event.u.new_time/1000)
if self._latest_seek is None or \
abs(pos-self._latest_seek) > 5:
bus.post(MediaSeekEvent(position=pos))
self._latest_seek = pos
elif event.type == EventType.MediaPlayerAudioVolume:
bus.post(MediaVolumeChangedEvent(volume=self._player.audio_get_volume()))
elif event.type == EventType.MediaPlayerMuted:
bus.post(MediaMuteChangedEvent(mute=True))
elif event.type == EventType.MediaPlayerUnmuted:
bus.post(MediaMuteChangedEvent(mute=False))
return callback
@action
def play(self, resource, subtitles=None, fullscreen=None, volume=None):
2019-02-20 17:17:30 +01:00
"""
Play a resource.
:param resource: Resource to play - can be a local file or a remote URL
:type resource: str
:param subtitles: Path to optional subtitle file
:type subtitles: str
:param fullscreen: Set to explicitly enable/disable fullscreen (default:
`fullscreen` configured value or False)
:type fullscreen: bool
:param volume: Set to explicitly set the playback volume (default:
`volume` configured value or 100)
:type fullscreen: bool
2019-02-20 17:17:30 +01:00
"""
get_bus().post(MediaPlayRequestEvent(resource=resource))
resource = self._get_resource(resource)
if resource.startswith('file://'):
resource = resource[len('file://'):]
elif resource.startswith('magnet:?'):
self._is_playing_torrent = True
return get_plugin('media.webtorrent').play(resource)
self._init_vlc(resource)
2019-02-20 17:17:30 +01:00
if subtitles:
if subtitles.startswith('file://'):
subtitles = subtitles[len('file://'):]
2019-02-21 01:34:09 +01:00
self._player.video_set_subtitle_file(subtitles)
2019-02-20 17:17:30 +01:00
self._is_playing_torrent = False
self._player.play()
if fullscreen or self._default_fullscreen:
self.set_fullscreen(True)
if volume is not None or self._default_volume is not None:
self.set_volume(volume if volume is not None
else self._default_volume)
2019-02-20 17:17:30 +01:00
return self.status()
@action
def pause(self):
""" Toggle the paused state """
if not self._player:
return (None, 'No vlc instance is running')
if not self._player.can_pause():
return (None, 'The specified media type cannot be paused')
self._player.pause()
return self.status()
@action
def quit(self):
""" Quit the player (same as `stop`) """
self._stop_torrent()
if not self._player:
return (None, 'No vlc instance is running')
self._player.stop()
return { 'state': PlayerState.STOP.value }
@action
def stop(self):
""" Stop the application (same as `quit`) """
return self.quit()
@action
def voldown(self, step=10.0):
""" Volume down by (default: 10)% """
if not self._player:
return (None, 'No vlc instance is running')
return self.set_volume(self._player.audio_get_volume()-step)
@action
def volup(self, step=10.0):
""" Volume up by (default: 10)% """
if not self._player:
return (None, 'No vlc instance is running')
return self.set_volume(self._player.audio_get_volume()+step)
@action
def set_volume(self, volume):
"""
Set the volume
:param volume: Volume value between 0 and 100
:type volume: float
"""
if not self._player:
return (None, 'No vlc instance is running')
volume = max(0, min(100, volume))
self._player.audio_set_volume(volume)
return { 'volume': volume }
@action
def seek(self, position):
"""
Seek backward/forward by the specified number of seconds
:param relative_position: Number of seconds relative to the current cursor
:type relative_position: int
"""
if not self._player:
return (None, 'No vlc instance is running')
if not self._player.is_seekable():
return (None, 'The resource is not seekable')
media = self._player.get_media()
if not media:
return (None, 'No media loaded')
pos = min(media.get_duration()/1000, max(0, position))
self._player.set_time(int(pos*1000))
return { 'position': pos }
@action
def back(self, offset=60.0):
""" Back by (default: 60) seconds """
if not self._player:
return (None, 'No vlc instance is running')
media = self._player.get_media()
if not media:
return (None, 'No media loaded')
pos = max(0, (self._player.get_time()/1000)-offset)
return self.seek(pos)
@action
def forward(self, offset=60.0):
""" Forward by (default: 60) seconds """
if not self._player:
return (None, 'No vlc instance is running')
media = self._player.get_media()
if not media:
return (None, 'No media loaded')
pos = min(media.get_duration()/1000, (self._player.get_time()/1000)+offset)
return self.seek(pos)
@action
def toggle_subtitles(self, visibile=None):
""" Toggle the subtitles visibility """
if not self._player:
return (None, 'No vlc instance is running')
if self._player.video_get_spu_count() == 0:
return (None, 'The media file has no subtitles set')
if self._player.video_get_spu() is None or \
self._player.video_get_spu() == -1:
self._player.video_set_spu(0)
else:
self._player.video_set_spu(-1)
@action
def toggle_fullscreen(self):
""" Toggle the fullscreen mode """
if not self._player:
return (None, 'No vlc instance is running')
self._player.toggle_fullscreen()
@action
def set_fullscreen(self, fullscreen=True):
""" Set fullscreen mode """
if not self._player:
return (None, 'No vlc instance is running')
self._player.set_fullscreen(fullscreen)
2019-02-20 17:17:30 +01:00
@action
def set_subtitles(self, filename):
""" Sets media subtitles from filename """
if not self._player:
return (None, 'No vlc instance is running')
if filename.startswith('file://'):
filename = filename[len('file://'):]
self._player.video_set_subtitle_file(filename)
@action
def remove_subtitles(self):
""" Removes (hides) the subtitles """
if not self._player:
return (None, 'No vlc instance is running')
self._player.video_set_spu(-1)
@action
def is_playing(self):
"""
:returns: True if it's playing, False otherwise
"""
if not self._player:
return False
return self._player.is_playing()
@action
def load(self, resource, **args):
"""
Load/queue a resource/video to the player
"""
if not self._player:
return self.play(resource, **args)
return self._player.set_media(resource)
@action
def mute(self):
""" Toggle mute state """
if not self._player:
return (None, 'No vlc instance is running')
self._player.audio_toggle_mute()
@action
def set_position(self, position):
"""
Seek backward/forward to the specified absolute position (same as ``seek``)
"""
return self.seek(position)
@action
def status(self):
"""
Get the current player state.
:returns: A dictionary containing the current state.
Example::
output = {
"filename": "filename or stream URL",
"state": "play" # or "stop" or "pause"
}
"""
import vlc
if not self._player:
return { 'state': PlayerState.STOP.value }
vlc_state = self._player.get_state()
state = PlayerState.STOP.value
filename = self._player.get_media().get_mrl() \
if self._player.get_media() else None
if vlc_state == vlc.State.Playing:
state = PlayerState.PLAY.value
if vlc_state == vlc.State.Paused:
state = PlayerState.PAUSE.value
time = float(self._player.get_time()/1000) if self._player.get_time() \
is not None else None
media = self._player.get_media()
duration = media.get_duration()/1000 if media and media.get_duration() \
is not None else None
return {
'filename': filename,
'state': state,
'time': time,
'duration': duration,
}
def on_stop(self, callback):
self._on_stop_callbacks.append(callback)
def _get_current_resource(self):
if not self._player or not self._player.get_media():
return
return self._player.get_media().get_mrl()
# vim:sw=4:ts=4:et: