mirror of
https://codeberg.org/polarisfm/youtube-dl.git
synced 2024-12-27 01:56:52 +00:00
1b5284b13f
At the beginning of every segment there was a drop to Unknown speed due to timeslice being too small to calculate speed. Now last speed from the previous fragment is used.
123 lines
4.2 KiB
Python
123 lines
4.2 KiB
Python
from __future__ import division, unicode_literals
|
|
|
|
import os
|
|
import time
|
|
|
|
from .common import FileDownloader
|
|
from .http import HttpFD
|
|
from ..utils import (
|
|
encodeFilename,
|
|
sanitize_open,
|
|
)
|
|
|
|
|
|
class HttpQuietDownloader(HttpFD):
|
|
def to_screen(self, *args, **kargs):
|
|
pass
|
|
|
|
|
|
class FragmentFD(FileDownloader):
|
|
"""
|
|
A base file downloader class for fragmented media (e.g. f4m/m3u8 manifests).
|
|
"""
|
|
|
|
def _prepare_and_start_frag_download(self, ctx):
|
|
self._prepare_frag_download(ctx)
|
|
self._start_frag_download(ctx)
|
|
|
|
def _prepare_frag_download(self, ctx):
|
|
if 'live' not in ctx:
|
|
ctx['live'] = False
|
|
self.to_screen(
|
|
'[%s] Total fragments: %s'
|
|
% (self.FD_NAME, ctx['total_frags'] if not ctx['live'] else 'unknown (live)'))
|
|
self.report_destination(ctx['filename'])
|
|
dl = HttpQuietDownloader(
|
|
self.ydl,
|
|
{
|
|
'continuedl': True,
|
|
'quiet': True,
|
|
'noprogress': True,
|
|
'ratelimit': self.params.get('ratelimit'),
|
|
'retries': self.params.get('retries', 0),
|
|
'test': self.params.get('test', False),
|
|
}
|
|
)
|
|
tmpfilename = self.temp_name(ctx['filename'])
|
|
dest_stream, tmpfilename = sanitize_open(tmpfilename, 'wb')
|
|
ctx.update({
|
|
'dl': dl,
|
|
'dest_stream': dest_stream,
|
|
'tmpfilename': tmpfilename,
|
|
})
|
|
|
|
def _start_frag_download(self, ctx):
|
|
total_frags = ctx['total_frags']
|
|
# This dict stores the download progress, it's updated by the progress
|
|
# hook
|
|
state = {
|
|
'status': 'downloading',
|
|
'downloaded_bytes': 0,
|
|
'frag_index': 0,
|
|
'frag_count': total_frags,
|
|
'filename': ctx['filename'],
|
|
'tmpfilename': ctx['tmpfilename'],
|
|
}
|
|
|
|
start = time.time()
|
|
ctx.update({
|
|
'started': start,
|
|
# Total complete fragments downloaded so far in bytes
|
|
'complete_frags_downloaded_bytes': 0,
|
|
# Amount of fragment's bytes downloaded by the time of the previous
|
|
# frag progress hook invocation
|
|
'prev_frag_downloaded_bytes': 0,
|
|
})
|
|
|
|
def frag_progress_hook(s):
|
|
if s['status'] not in ('downloading', 'finished'):
|
|
return
|
|
|
|
time_now = time.time()
|
|
state['elapsed'] = time_now - start
|
|
frag_total_bytes = s.get('total_bytes') or 0
|
|
if not ctx['live']:
|
|
estimated_size = (
|
|
(ctx['complete_frags_downloaded_bytes'] + frag_total_bytes) /
|
|
(state['frag_index'] + 1) * total_frags)
|
|
state['total_bytes_estimate'] = estimated_size
|
|
|
|
if s['status'] == 'finished':
|
|
state['frag_index'] += 1
|
|
state['downloaded_bytes'] += frag_total_bytes - ctx['prev_frag_downloaded_bytes']
|
|
ctx['complete_frags_downloaded_bytes'] = state['downloaded_bytes']
|
|
ctx['prev_frag_downloaded_bytes'] = 0
|
|
else:
|
|
frag_downloaded_bytes = s['downloaded_bytes']
|
|
state['downloaded_bytes'] += frag_downloaded_bytes - ctx['prev_frag_downloaded_bytes']
|
|
if not ctx['live']:
|
|
state['eta'] = self.calc_eta(
|
|
start, time_now, estimated_size,
|
|
state['downloaded_bytes'])
|
|
state['speed'] = s.get('speed') or ctx.get('speed')
|
|
ctx['speed'] = state['speed']
|
|
ctx['prev_frag_downloaded_bytes'] = frag_downloaded_bytes
|
|
self._hook_progress(state)
|
|
|
|
ctx['dl'].add_progress_hook(frag_progress_hook)
|
|
|
|
return start
|
|
|
|
def _finish_frag_download(self, ctx):
|
|
ctx['dest_stream'].close()
|
|
elapsed = time.time() - ctx['started']
|
|
self.try_rename(ctx['tmpfilename'], ctx['filename'])
|
|
fsize = os.path.getsize(encodeFilename(ctx['filename']))
|
|
|
|
self._hook_progress({
|
|
'downloaded_bytes': fsize,
|
|
'total_bytes': fsize,
|
|
'filename': ctx['filename'],
|
|
'status': 'finished',
|
|
'elapsed': elapsed,
|
|
})
|