mirror of
https://github.com/alexta69/metube.git
synced 2025-04-06 13:47:37 +03:00
434 lines
19 KiB
Python
434 lines
19 KiB
Python
import asyncio
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import logging
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import multiprocessing
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import os
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import re
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import shelve
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import subprocess
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import time
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from collections import OrderedDict
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from datetime import datetime
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import yt_dlp
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from dl_formats import get_format, get_opts, AUDIO_FORMATS
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log = logging.getLogger('ytdl')
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class DownloadQueueNotifier:
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async def added(self, dl):
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raise NotImplementedError
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async def updated(self, dl):
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raise NotImplementedError
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async def completed(self, dl):
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raise NotImplementedError
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async def canceled(self, id):
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raise NotImplementedError
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async def cleared(self, id):
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raise NotImplementedError
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class DownloadInfo:
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def __init__(self, id, title, url, quality, format, folder, custom_name_prefix, error):
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self.id = id if len(custom_name_prefix) == 0 else f'{custom_name_prefix}.{id}'
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self.title = title if len(custom_name_prefix) == 0 else f'{custom_name_prefix}.{title}'
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self.url = url
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self.quality = quality
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self.format = format
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self.folder = folder
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self.custom_name_prefix = custom_name_prefix
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self.msg = self.percent = self.speed = self.eta = None
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self.status = "pending"
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self.size = None
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self.timestamp = time.time_ns()
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self.error = error
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class Download:
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manager = None
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def __init__(self, download_dir, temp_dir, output_template, output_template_chapter, quality, format, ytdl_opts, info):
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self.download_dir = download_dir
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self.temp_dir = temp_dir
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self.output_template = output_template
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self.output_template_chapter = output_template_chapter
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self.format = get_format(format, quality)
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self.ytdl_opts = get_opts(format, quality, ytdl_opts)
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self.info = info
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self.canceled = False
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self.tmpfilename = None
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self.status_queue = None
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self.proc = None
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self.loop = None
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self.notifier = None
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def _download(self):
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try:
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def put_status(st):
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self.status_queue.put({k: v for k, v in st.items() if k in (
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'tmpfilename',
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'filename',
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'status',
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'msg',
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'total_bytes',
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'total_bytes_estimate',
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'downloaded_bytes',
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'speed',
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'eta',
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)})
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def put_status_postprocessor(d):
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if d['postprocessor'] == 'MoveFiles' and d['status'] == 'finished':
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if '__finaldir' in d['info_dict']:
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filename = os.path.join(d['info_dict']['__finaldir'], os.path.basename(d['info_dict']['filepath']))
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else:
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filename = d['info_dict']['filepath']
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self.status_queue.put({'status': 'finished', 'filename': filename})
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ret = yt_dlp.YoutubeDL(params={
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'quiet': True,
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'no_color': True,
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'paths': {"home": self.download_dir, "temp": self.temp_dir},
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'outtmpl': { "default": self.output_template, "chapter": self.output_template_chapter },
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'format': self.format,
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'socket_timeout': 30,
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'ignore_no_formats_error': True,
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'progress_hooks': [put_status],
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'postprocessor_hooks': [put_status_postprocessor],
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**self.ytdl_opts,
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}).download([self.info.url])
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# 如果是m4a格式的 需要使用ffmpeg将flac转为aac格式
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if self.info.format == "m4a":
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# 获取下载的文件路径
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downloaded_file = os.path.join(self.download_dir, self.info.title + '.flac')
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output_file = os.path.join(self.download_dir, self.info.title + '.m4a')
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# 使用ffmpeg进行转换
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ffmpeg_cmd = ['ffmpeg', '-i', downloaded_file, '-acodec', 'alac', '-vcodec', 'copy', output_file]
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subprocess.run(ffmpeg_cmd, check=True)
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# 删除原始的 FLAC 文件
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if os.path.exists(downloaded_file):
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os.remove(downloaded_file)
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# 更新队列中的状态，表明已完成转换
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self.status_queue.put({'status': 'finished', 'filename': output_file})
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self.status_queue.put({'status': 'finished' if ret == 0 else 'error'})
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except yt_dlp.utils.YoutubeDLError as exc:
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self.status_queue.put({'status': 'error', 'msg': str(exc)})
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except subprocess.CalledProcessError as exc:
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self.status_queue.put({'status': 'error', 'msg': f"ffmpeg error: {str(exc)}"})
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async def start(self, notifier):
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if Download.manager is None:
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Download.manager = multiprocessing.Manager()
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self.status_queue = Download.manager.Queue()
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self.proc = multiprocessing.Process(target=self._download)
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self.proc.start()
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self.loop = asyncio.get_running_loop()
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self.notifier = notifier
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self.info.status = 'preparing'
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await self.notifier.updated(self.info)
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asyncio.create_task(self.update_status())
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return await self.loop.run_in_executor(None, self.proc.join)
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def cancel(self):
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if self.running():
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self.proc.kill()
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self.canceled = True
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def close(self):
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if self.started():
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self.proc.close()
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self.status_queue.put(None)
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def running(self):
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try:
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return self.proc is not None and self.proc.is_alive()
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except ValueError:
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return False
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def started(self):
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return self.proc is not None
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async def update_status(self):
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while True:
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status = await self.loop.run_in_executor(None, self.status_queue.get)
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if status is None:
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return
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self.tmpfilename = status.get('tmpfilename')
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if 'filename' in status:
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fileName = status.get('filename')
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self.info.filename = os.path.relpath(fileName, self.download_dir)
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self.info.size = os.path.getsize(fileName) if os.path.exists(fileName) else None
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# Set correct file extension for thumbnails
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if(self.info.format == 'thumbnail'):
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self.info.filename = re.sub(r'\.webm$', '.jpg', self.info.filename)
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self.info.status = status['status']
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self.info.msg = status.get('msg')
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if 'downloaded_bytes' in status:
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total = status.get('total_bytes') or status.get('total_bytes_estimate')
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if total:
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self.info.percent = status['downloaded_bytes'] / total * 100
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self.info.speed = status.get('speed')
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self.info.eta = status.get('eta')
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await self.notifier.updated(self.info)
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class PersistentQueue:
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def __init__(self, path):
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pdir = os.path.dirname(path)
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if not os.path.isdir(pdir):
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os.mkdir(pdir)
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with shelve.open(path, 'c'):
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pass
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self.path = path
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self.dict = OrderedDict()
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def load(self):
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for k, v in self.saved_items():
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self.dict[k] = Download(None, None, None, None, None, None, {}, v)
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def exists(self, key):
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return key in self.dict
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def get(self, key):
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return self.dict[key]
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def items(self):
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return self.dict.items()
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def saved_items(self):
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with shelve.open(self.path, 'r') as shelf:
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return sorted(shelf.items(), key=lambda item: item[1].timestamp)
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def put(self, value):
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key = value.info.url
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self.dict[key] = value
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with shelve.open(self.path, 'w') as shelf:
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shelf[key] = value.info
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def delete(self, key):
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del self.dict[key]
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with shelve.open(self.path, 'w') as shelf:
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shelf.pop(key)
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def next(self):
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k, v = next(iter(self.dict.items()))
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return k, v
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def empty(self):
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return not bool(self.dict)
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class DownloadQueue:
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def __init__(self, config, notifier):
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self.config = config
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self.notifier = notifier
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self.queue = PersistentQueue(self.config.STATE_DIR + '/queue')
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self.done = PersistentQueue(self.config.STATE_DIR + '/completed')
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self.pending = PersistentQueue(self.config.STATE_DIR + '/pending')
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self.done.load()
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async def __import_queue(self):
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for k, v in self.queue.saved_items():
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await self.add(v.url, v.quality, v.format, v.folder, v.custom_name_prefix, True, 0)
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async def initialize(self):
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self.event = asyncio.Event()
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asyncio.create_task(self.__download())
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asyncio.create_task(self.__import_queue())
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def __extract_info(self, url, playlist_strict_mode):
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return yt_dlp.YoutubeDL(params={
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'quiet': True,
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'no_color': True,
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'extract_flat': True,
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'ignore_no_formats_error': True,
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'noplaylist': playlist_strict_mode,
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'paths': {"home": self.config.DOWNLOAD_DIR, "temp": self.config.TEMP_DIR},
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**self.config.YTDL_OPTIONS,
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}).extract_info(url, download=False)
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def __calc_download_path(self, quality, format, folder):
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"""Calculates download path from quality, format and folder attributes.
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Returns:
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Tuple dldirectory, error_message both of which might be None (but not at the same time)
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"""
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# Keep consistent with frontend
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base_directory = self.config.DOWNLOAD_DIR if (quality != 'audio' and format not in AUDIO_FORMATS) else self.config.AUDIO_DOWNLOAD_DIR
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if folder:
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if not self.config.CUSTOM_DIRS:
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return None, {'status': 'error', 'msg': f'A folder for the download was specified but CUSTOM_DIRS is not true in the configuration.'}
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dldirectory = os.path.realpath(os.path.join(base_directory, folder))
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real_base_directory = os.path.realpath(base_directory)
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if not dldirectory.startswith(real_base_directory):
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return None, {'status': 'error', 'msg': f'Folder "{folder}" must resolve inside the base download directory "{real_base_directory}"'}
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if not os.path.isdir(dldirectory):
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if not self.config.CREATE_CUSTOM_DIRS:
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return None, {'status': 'error', 'msg': f'Folder "{folder}" for download does not exist inside base directory "{real_base_directory}", and CREATE_CUSTOM_DIRS is not true in the configuration.'}
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os.makedirs(dldirectory, exist_ok=True)
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else:
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dldirectory = base_directory
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return dldirectory, None
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async def __add_entry(self, entry, quality, format, folder, custom_name_prefix, playlist_strict_mode, playlist_item_limit, auto_start, already):
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if not entry:
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return {'status': 'error', 'msg': "Invalid/empty data was given."}
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error = None
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if "live_status" in entry and "release_timestamp" in entry and entry.get("live_status") == "is_upcoming":
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dt_ts = datetime.fromtimestamp(entry.get("release_timestamp")).strftime('%Y-%m-%d %H:%M:%S %z')
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error = f"Live stream is scheduled to start at {dt_ts}"
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else:
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if "msg" in entry:
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error = entry["msg"]
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etype = entry.get('_type') or 'video'
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if etype.startswith('url'):
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log.debug('Processing as an url')
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return await self.add(entry['url'], quality, format, folder, custom_name_prefix, playlist_strict_mode, playlist_item_limit, auto_start, already)
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elif etype == 'playlist':
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log.debug('Processing as a playlist')
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entries = entry['entries']
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log.info(f'playlist detected with {len(entries)} entries')
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playlist_index_digits = len(str(len(entries)))
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results = []
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if playlist_item_limit > 0:
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log.info(f'Playlist item limit is set. Processing only first {playlist_item_limit} entries')
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entries = entries[:playlist_item_limit]
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for index, etr in enumerate(entries, start=1):
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etr["_type"] = "video" # Prevents video to be treated as url and lose below properties during processing
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etr["playlist"] = entry["id"]
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etr["playlist_index"] = '{{0:0{0:d}d}}'.format(playlist_index_digits).format(index)
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for property in ("id", "title", "uploader", "uploader_id"):
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if property in entry:
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etr[f"playlist_{property}"] = entry[property]
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results.append(await self.__add_entry(etr, quality, format, folder, custom_name_prefix, playlist_strict_mode, playlist_item_limit, auto_start, already))
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if any(res['status'] == 'error' for res in results):
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return {'status': 'error', 'msg': ', '.join(res['msg'] for res in results if res['status'] == 'error' and 'msg' in res)}
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return {'status': 'ok'}
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elif etype == 'video' or etype.startswith('url') and 'id' in entry and 'title' in entry:
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log.debug('Processing as a video')
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if not self.queue.exists(entry['id']):
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dl = DownloadInfo(entry['id'], entry.get('title') or entry['id'], entry.get('webpage_url') or entry['url'], quality, format, folder, custom_name_prefix, error)
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dldirectory, error_message = self.__calc_download_path(quality, format, folder)
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if error_message is not None:
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return error_message
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output = self.config.OUTPUT_TEMPLATE if len(custom_name_prefix) == 0 else f'{custom_name_prefix}.{self.config.OUTPUT_TEMPLATE}'
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output_chapter = self.config.OUTPUT_TEMPLATE_CHAPTER
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if 'playlist' in entry and entry['playlist'] is not None:
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if len(self.config.OUTPUT_TEMPLATE_PLAYLIST):
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output = self.config.OUTPUT_TEMPLATE_PLAYLIST
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for property, value in entry.items():
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if property.startswith("playlist"):
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output = output.replace(f"%({property})s", str(value))
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ytdl_options = dict(self.config.YTDL_OPTIONS)
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if playlist_item_limit > 0:
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log.info(f'playlist limit is set. Processing only first {playlist_item_limit} entries')
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ytdl_options['playlistend'] = playlist_item_limit
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if auto_start is True:
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self.queue.put(Download(dldirectory, self.config.TEMP_DIR, output, output_chapter, quality, format, ytdl_options, dl))
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self.event.set()
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else:
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self.pending.put(Download(dldirectory, self.config.TEMP_DIR, output, output_chapter, quality, format, ytdl_options, dl))
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await self.notifier.added(dl)
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return {'status': 'ok'}
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return {'status': 'error', 'msg': f'Unsupported resource "{etype}"'}
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async def add(self, url, quality, format, folder, custom_name_prefix, playlist_strict_mode, playlist_item_limit, auto_start=True, already=None):
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log.info(f'adding {url}: {quality=} {format=} {already=} {folder=} {custom_name_prefix=} {playlist_strict_mode=} {playlist_item_limit=}')
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already = set() if already is None else already
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if url in already:
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log.info('recursion detected, skipping')
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return {'status': 'ok'}
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else:
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already.add(url)
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try:
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entry = await asyncio.get_running_loop().run_in_executor(None, self.__extract_info, url, playlist_strict_mode)
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except yt_dlp.utils.YoutubeDLError as exc:
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return {'status': 'error', 'msg': str(exc)}
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return await self.__add_entry(entry, quality, format, folder, custom_name_prefix, playlist_strict_mode, playlist_item_limit, auto_start, already)
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async def start_pending(self, ids):
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for id in ids:
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if not self.pending.exists(id):
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log.warn(f'requested start for non-existent download {id}')
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continue
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dl = self.pending.get(id)
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self.queue.put(dl)
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self.pending.delete(id)
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self.event.set()
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return {'status': 'ok'}
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async def cancel(self, ids):
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for id in ids:
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if self.pending.exists(id):
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self.pending.delete(id)
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await self.notifier.canceled(id)
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continue
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if not self.queue.exists(id):
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log.warn(f'requested cancel for non-existent download {id}')
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continue
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if self.queue.get(id).started():
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self.queue.get(id).cancel()
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else:
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self.queue.delete(id)
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await self.notifier.canceled(id)
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return {'status': 'ok'}
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async def clear(self, ids):
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for id in ids:
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if not self.done.exists(id):
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log.warn(f'requested delete for non-existent download {id}')
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continue
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if self.config.DELETE_FILE_ON_TRASHCAN:
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dl = self.done.get(id)
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try:
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dldirectory, _ = self.__calc_download_path(dl.info.quality, dl.info.format, dl.info.folder)
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os.remove(os.path.join(dldirectory, dl.info.filename))
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except Exception as e:
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log.warn(f'deleting file for download {id} failed with error message {e!r}')
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self.done.delete(id)
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await self.notifier.cleared(id)
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return {'status': 'ok'}
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def get(self):
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return(list((k, v.info) for k, v in self.queue.items()) + list((k, v.info) for k, v in self.pending.items()),
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list((k, v.info) for k, v in self.done.items()))
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async def __download(self):
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while True:
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while self.queue.empty():
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log.info('waiting for item to download')
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await self.event.wait()
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self.event.clear()
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id, entry = self.queue.next()
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log.info(f'downloading {entry.info.title}')
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await entry.start(self.notifier)
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if entry.info.status != 'finished':
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if entry.tmpfilename and os.path.isfile(entry.tmpfilename):
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try:
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os.remove(entry.tmpfilename)
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except:
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pass
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entry.info.status = 'error'
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entry.close()
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if self.queue.exists(id):
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self.queue.delete(id)
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if entry.canceled:
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await self.notifier.canceled(id)
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else:
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self.done.put(entry)
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await self.notifier.completed(entry.info)
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