platypush/platypush/plugins/media/__init__.py
2019-02-05 09:49:50 +01:00

383 lines
12 KiB
Python

import enum
import os
import re
import subprocess
import urllib.request
import urllib.parse
from platypush.config import Config
from platypush.context import get_plugin
from platypush.plugins import Plugin, action
class PlayerState(enum.Enum):
STOP = 'stop'
PLAY = 'play'
PAUSE = 'pause'
class MediaPlugin(Plugin):
"""
Generic plugin to interact with a media player.
Requires:
* A media player installed (supported so far: mplayer, omxplayer, chromecast)
* **python-libtorrent** (``pip install python-libtorrent``), optional for Torrent support
* **youtube-dl** installed on your system (see your distro instructions), optional for YouTube support
"""
# A media plugin can either be local or remote (e.g. control media on
# another device)
_is_local = True
_NOT_IMPLEMENTED_ERR = NotImplementedError(
'This method must be implemented in a derived class')
# Supported audio extensions
audio_extensions = {
'3gp', 'aa', 'aac', 'aax', 'act', 'aiff', 'amr', 'ape', 'au',
'awb', 'dct', 'dss', 'dvf', 'flac', 'gsm', 'iklax', 'ivs',
'm4a', 'm4b', 'm4p', 'mmf', 'mp3', 'mpc', 'msv', 'nmf', 'nsf',
'ogg,', 'opus', 'ra,', 'raw', 'sln', 'tta', 'vox', 'wav',
'wma', 'wv', 'webm', '8svx',
}
# Supported video extensions
video_extensions = {
'webm', 'mkv', 'flv', 'flv', 'vob', 'ogv', 'ogg', 'drc', 'gif',
'gifv', 'mng', 'avi', 'mts', 'm2ts', 'mov', 'qt', 'wmv', 'yuv',
'rm', 'rmvb', 'asf', 'amv', 'mp4', 'm4p', 'm4v', 'mpg', 'mp2',
'mpeg', 'mpe', 'mpv', 'mpg', 'mpeg', 'm2v', 'm4v', 'svi',
'3gp', '3g2', 'mxf', 'roq', 'nsv', 'flv', 'f4v', 'f4p', 'f4a',
'f4b',
}
_supported_media_plugins = {'media.mplayer', 'media.omxplayer',
'media.chromecast'}
def __init__(self, media_dirs=[], download_dir=None, env=None,
*args, **kwargs):
"""
:param media_dirs: Directories that will be scanned for media files when
a search is performed (default: none)
:type media_dirs: list
:param download_dir: Directory where external resources/torrents will be
downloaded (default: none)
:type download_dir: str
:param env: Environment variables key-values to pass to the
player executable (e.g. DISPLAY, XDG_VTNR, PULSE_SINK etc.)
:type env: dict
"""
super().__init__(*args, **kwargs)
player = None
player_config = {}
if self.__class__.__name__ == 'MediaPlugin':
# Abstract class, initialize with the default configured player
for plugin in Config.get_plugins().keys():
if plugin in self._supported_media_plugins:
player = plugin
if get_plugin(player).is_local():
# Local players have priority as default if configured
break
else:
player = self # Derived concrete class
if not player:
raise AttributeError('No media plugin configured')
media_dirs = media_dirs or player_config.get('media_dirs', [])
download_dir = download_dir or player_config.get('download_dir')
if self.__class__.__name__ == 'MediaPlugin':
# Populate this plugin with the actions of the configured player
plugin = get_plugin(player)
for action in plugin.registered_actions:
setattr(self, action, getattr(plugin, action))
self.registered_actions.add(action)
self._env = env or {}
self.media_dirs = set(
filter(
lambda _: os.path.isdir(_),
map(
lambda _: os.path.abspath(os.path.expanduser(_)),
media_dirs
)
)
)
if download_dir:
self.download_dir = os.path.abspath(os.path.expanduser(download_dir))
if not os.path.isdir(self.download_dir):
raise RuntimeError('download_dir [{}] is not a valid directory'
.format(self.download_dir))
self.media_dirs.add(self.download_dir)
self._videos_queue = []
def _get_resource(self, resource):
"""
:param resource: Resource to play/parse. Supported types:
* Local files (format: ``file://<path>/<file>``)
* Remote videos (format: ``https://<url>/<resource>``)
* YouTube videos (format: ``https://www.youtube.com/watch?v=<id>``)
* Torrents (format: Magnet links, Torrent URLs or local Torrent files)
"""
if resource.startswith('youtube:') \
or resource.startswith('https://www.youtube.com/watch?v='):
if self.__class__.__name__ == 'MediaChromecastPlugin':
# The Chromecast has already its way to handle YouTube
return resource
resource = self._get_youtube_content(resource)
elif resource.startswith('magnet:?'):
try:
get_plugin('media.webtorrent')
return resource # media.webtorrent will handle this
except:
pass
torrents = get_plugin('torrent')
self.logger.info('Downloading torrent {} to {}'.format(
resource, self.download_dir))
response = torrents.download(resource, download_dir=self.download_dir)
resources = [f for f in response.output if self._is_video_file(f)]
if resources:
self._videos_queue = sorted(resources)
resource = self._videos_queue.pop(0)
else:
raise RuntimeError('Unable to download torrent {}'.format(resource))
return resource
@action
def play(self, resource, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def pause(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def stop(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def quit(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def voldown(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def volup(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def back(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def forward(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def next(self):
""" Play the next item in the queue """
if self.player:
self.player.stop()
if self._videos_queue:
video = self._videos_queue.pop(0)
return self.play(video)
@action
def toggle_subtitles(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def is_playing(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def load(self, resource, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def mute(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def seek(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def set_position(self, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def set_volume(self, volume, *args, **kwargs):
raise self._NOT_IMPLEMENTED_ERR
@action
def search(self, query, types=None, queue_results=False, autoplay=False):
"""
Perform a video search.
:param query: Query string, video name or partial name
:type query: str
:param types: Video types to search (default: ``["youtube", "file", "torrent"]``)
:type types: list
:param queue_results: Append the results to the current playing queue (default: False)
:type queue_results: bool
:param autoplay: Play the first result of the search (default: False)
:type autoplay: bool
"""
results = []
if types is None:
types = { 'youtube', 'file', 'torrent' }
if 'file' in types:
file_results = self.file_search(query).output
results.extend(file_results)
if 'torrent' in types:
torrents = get_plugin('torrent')
torrent_results = torrents.search(query).output
results.extend(torrent_results)
if 'youtube' in types:
yt_results = self.youtube_search(query).output
results.extend(yt_results)
if results:
if queue_results:
self._videos_queue = [_['url'] for _ in results]
if autoplay:
self.play(self._videos_queue.pop(0))
elif autoplay:
self.play(results[0]['url'])
return results
@classmethod
def _is_video_file(cls, filename):
return filename.lower().split('.')[-1] in cls.video_extensions
@classmethod
def _is_audio_file(cls, filename):
return filename.lower().split('.')[-1] in cls.audio_extensions
@action
def file_search(self, query):
results = []
query_tokens = [_.lower() for _ in re.split('\s+', query.strip())]
for media_dir in self.media_dirs:
self.logger.info('Scanning {} for "{}"'.format(media_dir, query))
for path, dirs, files in os.walk(media_dir):
for f in files:
if not self._is_video_file(f) and not self._is_audio_file(f):
continue
matches_query = True
for token in query_tokens:
if token not in f.lower():
matches_query = False
break
if not matches_query:
continue
results.append({
'url': 'file://' + path + os.sep + f,
'title': f,
})
return results
@action
def youtube_search(self, query):
"""
Performs a YouTube search either using the YouTube API (faster and
recommended, it requires the :mod:`platypush.plugins.google.youtube`
plugin to be configured) or parsing the HTML search results (fallback
slower method)
"""
self.logger.info('Searching YouTube for "{}"'.format(query))
try:
return self._youtube_search_api(query=query)
except Exception as e:
self.logger.warning('Unable to load the YouTube plugin, falling ' +
'back to HTML parse method: {}'.format(str(e)))
return self._youtube_search_html_parse(query=query)
def _youtube_search_api(self, query):
return [
{
'url': 'https://www.youtube.com/watch?v=' + item['id']['videoId'],
'title': item.get('snippet', {}).get('title', '<No Title>'),
}
for item in get_plugin('google.youtube').search(query=query).output
if item.get('id', {}).get('kind') == 'youtube#video'
]
def _youtube_search_html_parse(self, query):
query = urllib.parse.quote(query)
url = "https://www.youtube.com/results?search_query=" + query
response = urllib.request.urlopen(url)
html = response.read().decode('utf-8')
results = []
while html:
m = re.search('(<a href="(/watch\?v=.+?)".+?yt-uix-tile-link.+?title="(.+?)".+?>)', html)
if m:
results.append({
'url': 'https://www.youtube.com' + m.group(2),
'title': m.group(3)
})
html = html.split(m.group(1))[1]
else:
html = ''
self.logger.info('{} YouTube video results for the search query "{}"'
.format(len(results), query))
return results
@classmethod
def _get_youtube_content(cls, url):
m = re.match('youtube:video:(.*)', url)
if m: url = 'https://www.youtube.com/watch?v={}'.format(m.group(1))
proc = subprocess.Popen(['youtube-dl','-f','best', '-g', url],
stdout=subprocess.PIPE)
return proc.stdout.read().decode("utf-8", "strict")[:-1]
def is_local(self):
return self._is_local
# vim:sw=4:ts=4:et: