79 lines
2.0 KiB
Python
79 lines
2.0 KiB
Python
#
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# Downloads the video/audio as a stream from a provided link using youtube-dl
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# does not save the file, only the most recent fragment is held. Thus, this is
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# ideal for devices with little memory
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# TODO gather video metadata before download
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#
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import tempfile
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import sys
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import subprocess
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import os
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import pip
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import signal
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from logger import logger
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from threading import Thread, main_thread
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from time import sleep
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from stream import StreamSource
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def updateYoutubeDL():
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pip.main(['install', '--target=' + dirpath, '--upgrade', 'youtube_dl'])
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def importYoutubeDL():
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return __import__('youtube_dl')
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dirpath = tempfile.mkdtemp()
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sys.path.append(dirpath)
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updateYoutubeDL()
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class Downloader(Thread, StreamSource):
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def __init__(self, url, cb):
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Thread.__init__(self)
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# update youtube-dl
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# TODO: do this only every once in a while
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# updateYoutubeDL()
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self.cb = cb
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self.exit = False
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env = dict(os.environ)
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env["PYTHONPATH"] = dirpath
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cmd = [
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sys.executable,
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dirpath + "/bin/youtube-dl",
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"-o", "-",
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"-f", "bestaudio/best",
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# "--audio-format", "mp3", "-x", # cannot do because it requires a tmp file to re-encode
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"--prefer-ffmpeg",
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"--no-mark-watched",
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"--geo-bypass",
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"--no-playlist",
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"--retries", "100",
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"--no-call-home",
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url
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]
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self.popen = subprocess.Popen(cmd, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE, preexec_fn=os.setsid)
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logger.add(self.popen.stderr, "youtube-dl.log")
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self.start()
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def isAlive(self):
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return self.popen.poll() is None
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def stop(self):
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if self.isAlive():
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os.killpg(os.getpgid(self.popen.pid), signal.SIGTERM)
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self.popen.stdout.close()
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self.exit = True
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# checks to see if the current download has finished
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# if yes, cleans up and fires callback
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def run(self):
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while main_thread().is_alive() and not self.exit:
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if not self.isAlive():
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self.cb()
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sleep(0.1)
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def getStream(self):
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return self.popen.stdout |