forked from platypush/platypush
[media] Added support for yt-dlp-compatible URLs to media.download.
Also, added `MediaDownloadEvent`s to keep track of the state of the download.
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16527417da
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96aa22c03e
GPG key ID:
D90FBA7F76362774
3 changed files with 315 additions and 21 deletions
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@ -1,11 +1,12 @@
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from abc import ABC
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from platypush.message.event import Event
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class MediaEvent(Event):
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"""Base class for media events"""
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def __init__(self, player=None, plugin=None, status=None, *args, **kwargs):
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super().__init__(player=player, plugin=plugin, status=status, *args, **kwargs)
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def __init__(self, *args, player=None, plugin=None, status=None, **kwargs):
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super().__init__(*args, player=player, plugin=plugin, status=status, **kwargs)
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class MediaPlayRequestEvent(MediaEvent):
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@ -126,4 +127,65 @@ class NewPlayingMediaEvent(MediaEvent):
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)
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class MediaDownloadEvent(MediaEvent, ABC):
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"""
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Base class for media download events.
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"""
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def __init__(
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self, *args, player=None, plugin=None, resource=None, target=None, **kwargs
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):
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"""
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:param resource: File name or URI of the downloaded resource
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:type resource: str
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:param target: Target file name or URI of the downloaded resource
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:type target: str
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"""
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super().__init__(
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*args,
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player=player,
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plugin=plugin,
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resource=resource,
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target=target,
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**kwargs
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)
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class MediaDownloadStartedEvent(MediaDownloadEvent):
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"""
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Event triggered when a media download is started.
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"""
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class MediaDownloadProgressEvent(MediaDownloadEvent):
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"""
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Event triggered when a media download is in progress.
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"""
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def __init__(self, progress: float, *args, **kwargs):
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"""
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:param progress: Download progress in percentage, between 0 and 100.
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"""
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super().__init__(*args, progress=progress, **kwargs)
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class MediaDownloadCompletedEvent(MediaDownloadEvent):
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"""
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Event triggered when a media download is completed.
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"""
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class MediaDownloadErrorEvent(MediaDownloadEvent):
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"""
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Event triggered when a media download fails.
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"""
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def __init__(self, error: str, *args, **kwargs):
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"""
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:param error: Error message.
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"""
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super().__init__(*args, error=error, **kwargs)
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# vim:sw=4:ts=4:et:
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@ -1,3 +1,4 @@
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from contextlib import suppress
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from dataclasses import dataclass
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import enum
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import functools
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@ -9,15 +10,34 @@ import re
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import subprocess
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import tempfile
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import threading
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import time
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from abc import ABC, abstractmethod
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from typing import Iterable, Optional, List, Dict, Union
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from typing import (
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Callable,
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Dict,
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IO,
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Iterable,
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List,
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Optional,
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Tuple,
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Type,
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Union,
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)
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import requests
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from platypush.config import Config
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from platypush.context import get_plugin, get_backend
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from platypush.plugins import Plugin, action
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from platypush.utils import get_default_downloads_dir
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from platypush.message.event.media import (
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MediaDownloadCompletedEvent,
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MediaDownloadErrorEvent,
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MediaDownloadEvent,
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MediaDownloadProgressEvent,
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MediaDownloadStartedEvent,
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MediaEvent,
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)
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from platypush.plugins import RunnablePlugin, action
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from platypush.utils import get_default_downloads_dir, get_plugin_name_by_class
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class PlayerState(enum.Enum):
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@ -50,7 +70,7 @@ class MediaResource:
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resolution: Optional[str] = None
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class MediaPlugin(Plugin, ABC):
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class MediaPlugin(RunnablePlugin, ABC):
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"""
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Generic plugin to interact with a media player.
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@ -170,7 +190,7 @@ class MediaPlugin(Plugin, ABC):
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env: Optional[Dict[str, str]] = None,
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volume: Optional[Union[float, int]] = None,
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torrent_plugin: str = 'torrent',
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youtube_format: Optional[str] = 'best[height<=?1080][ext=mp4]',
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youtube_format: Optional[str] = 'bv[height<=?1080][ext=mp4]+ba',
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youtube_dl: str = 'yt-dlp',
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**kwargs,
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):
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@ -213,6 +233,7 @@ class MediaPlugin(Plugin, ABC):
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media_dirs = []
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player = None
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player_config = {}
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self._download_threads: Dict[Tuple[str, str], threading.Thread] = {}
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if self.__class__.__name__ == 'MediaPlugin':
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# Abstract class, initialize with the default configured player
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@ -399,8 +420,8 @@ class MediaPlugin(Plugin, ABC):
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@action
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@abstractmethod
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def stop(self, **kwargs):
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raise self._NOT_IMPLEMENTED_ERR
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def stop(self, *args, **kwargs):
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super().stop()
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@action
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@abstractmethod
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@ -683,7 +704,15 @@ class MediaPlugin(Plugin, ABC):
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output = ytdl.communicate()[0].decode().strip()
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ytdl.wait()
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stream_url, info = output.split('\n')
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self.logger.debug('yt-dlp output: %s', output)
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lines = output.split('\n')
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if not lines:
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self.logger.warning('No output from yt-dlp')
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return None
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stream_url = lines[1] if len(lines) > 2 else lines[0]
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info = lines[-1]
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return {
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**json.loads(info),
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'url': stream_url,
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@ -772,31 +801,230 @@ class MediaPlugin(Plugin, ABC):
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@action
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def download(
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self, url: str, filename: Optional[str] = None, directory: Optional[str] = None
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self,
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url: str,
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filename: Optional[str] = None,
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directory: Optional[str] = None,
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timeout: int = 10,
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youtube_format: Optional[str] = None,
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):
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"""
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Download a media URL to a local file on the Platypush host.
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Download a media URL to a local file on the Platypush host (yt-dlp
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required for YouTube URLs).
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This action is non-blocking and returns the path to the downloaded file
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once the download is initiated.
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You can then subscribe to these events to monitor the download progress:
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- :class:`platypush.message.event.media.MediaDownloadStartedEvent`
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- :class:`platypush.message.event.media.MediaDownloadProgressEvent`
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- :class:`platypush.message.event.media.MediaDownloadErrorEvent`
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- :class:`platypush.message.event.media.MediaDownloadFinishedEvent`
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:param url: Media URL.
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:param filename: Media filename (default: inferred from the URL basename).
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:param directory: Destination directory (default: ``download_dir``).
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:param timeout: Network timeout in seconds (default: 10).
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:param youtube: Set to True if the URL is a YouTube video, or any other
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URL compatible with yt-dlp.
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:param youtube_format: Override the default YouTube format selection.
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:return: The absolute path to the downloaded file.
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"""
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path = self._get_download_path(
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url, directory=directory, filename=filename, youtube_format=youtube_format
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)
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if not filename:
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filename = url.split('/')[-1]
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if self._is_youtube_resource(url):
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self._download_youtube_url(
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url, path, timeout=timeout, youtube_format=youtube_format
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)
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else:
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self._download_url(url, path, timeout=timeout)
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return path
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def _get_download_path(
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self,
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url: str,
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directory: Optional[str] = None,
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filename: Optional[str] = None,
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youtube_format: Optional[str] = None,
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) -> str:
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if not directory:
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directory = self.download_dir
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path = os.path.join(directory, filename)
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directory = os.path.expanduser(directory)
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youtube_format = youtube_format or self.youtube_format
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with requests.get(url, timeout=20, stream=True) as r:
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r.raise_for_status()
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with open(path, 'wb') as f:
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for chunk in r.iter_content(chunk_size=8192):
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f.write(chunk)
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if self._is_youtube_resource(url):
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with subprocess.Popen(
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[
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self._ytdl,
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*(
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[
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'-f',
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youtube_format,
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]
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if youtube_format
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else []
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),
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'-O',
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'%(title)s.%(ext)s',
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url,
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],
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stdout=subprocess.PIPE,
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) as proc:
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assert proc.stdout, 'yt-dlp stdout is None'
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filename = proc.stdout.read().decode()[:-1]
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return path
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if not filename:
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filename = url.split('/')[-1]
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return os.path.join(directory, filename)
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def _download_url(self, url: str, path: str, timeout: int):
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r = requests.get(url, timeout=timeout, stream=True)
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r.raise_for_status()
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download_thread = threading.Thread(
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target=self._download_url_thread,
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args=(r, open(path, 'wb')), # pylint: disable=consider-using-with
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)
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download_thread.start()
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self._download_threads[url, path] = download_thread
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def _download_youtube_url(
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self, url: str, path: str, timeout: int, youtube_format: Optional[str] = None
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):
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ytdl_cmd = [
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self._ytdl,
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*(
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['-f', youtube_format or self.youtube_format]
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if youtube_format or self.youtube_format
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else []
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),
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url,
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'-o',
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'-',
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]
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self.logger.info('Executing command %r', ytdl_cmd)
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download_thread = threading.Thread(
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target=self._download_youtube_url_thread,
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args=(
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subprocess.Popen( # pylint: disable=consider-using-with
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ytdl_cmd, stdout=subprocess.PIPE
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),
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open(path, 'wb'), # pylint: disable=consider-using-with
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url,
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),
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kwargs={'timeout': timeout},
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)
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download_thread.start()
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self._download_threads[url, path] = download_thread
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def _download_url_thread(self, response: requests.Response, f: IO):
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def on_close():
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with suppress(IOError, OSError, requests.exceptions.RequestException):
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response.close()
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size = int(response.headers.get('Content-Length', 0)) or None
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self._download_thread_wrapper(
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iterator=lambda: response.iter_content(chunk_size=8192),
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f=f,
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url=response.url,
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size=size,
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on_close=on_close,
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)
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def _download_youtube_url_thread(
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self, proc: subprocess.Popen, f: IO, url: str, timeout: int
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):
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def read():
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if not proc.stdout:
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return b''
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return proc.stdout.read(8192)
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def on_close():
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with suppress(IOError, OSError):
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proc.terminate()
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proc.wait(timeout=5)
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if proc.returncode is None:
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proc.kill()
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proc_start = time.time()
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while not proc.stdout:
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if time.time() - proc_start > timeout:
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self.logger.warning('yt-dlp process timed out')
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on_close()
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return
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self.wait_stop(1)
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self._download_thread_wrapper(
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iterator=lambda: iter(read, b''),
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f=f,
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url=url,
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size=None,
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on_close=on_close,
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)
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def _download_thread_wrapper(
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self,
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iterator: Callable[[], Iterable[bytes]],
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f: IO,
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url: str,
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size: Optional[int],
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on_close: Callable[[], None] = lambda: None,
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):
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def post_event(event_type: Type[MediaDownloadEvent], **kwargs):
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self._post_event(event_type, resource=url, path=f.name, **kwargs)
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if (url, f.name) in self._download_threads:
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self.logger.warning(
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'A download of %s to %s is already in progress', url, f.name
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)
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return
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interrupted = False
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try:
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self._post_event(MediaDownloadStartedEvent, resource=url, path=f.name)
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last_percent = 0
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for chunk in iterator():
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if not chunk or self.should_stop():
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interrupted = self.should_stop()
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break
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f.write(chunk)
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percent = f.tell() / size * 100 if size else 0
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if percent and percent - last_percent > 1:
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post_event(MediaDownloadProgressEvent, progress=percent)
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last_percent = percent
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if not interrupted:
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post_event(MediaDownloadCompletedEvent)
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except Exception as e:
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self.logger.warning('Error while downloading URL: %s', e)
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post_event(MediaDownloadErrorEvent, error=str(e))
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finally:
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on_close()
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with suppress(IOError, OSError):
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f.close()
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self._download_threads.pop((url, f.name), None)
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def _post_event(self, event_type: Type[MediaEvent], **kwargs):
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evt = event_type(
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player=get_plugin_name_by_class(self.__class__), plugin=self, **kwargs
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)
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self._bus.post(evt)
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def is_local(self):
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return self._is_local
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@ -820,5 +1048,8 @@ class MediaPlugin(Plugin, ABC):
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f.write(content)
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return f.name
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def main(self):
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self.wait_stop()
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# vim:sw=4:ts=4:et:
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@ -23,3 +23,4 @@ extend-ignore =
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W503
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SIM104
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SIM105
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SIM115
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