import os
import time
+import io
from .common import FileDownloader
from .http import HttpFD
from ..utils import (
+ error_to_compat_str,
encodeFilename,
sanitize_open,
+ sanitized_Request,
+ compat_str,
)
class FragmentFD(FileDownloader):
"""
A base file downloader class for fragmented media (e.g. f4m/m3u8 manifests).
+
+ Available options:
+
+ fragment_retries: Number of times to retry a fragment for HTTP error (DASH
+ and hlsnative only)
+ skip_unavailable_fragments:
+ Skip unavailable fragments (DASH and hlsnative only)
"""
+ def report_retry_fragment(self, err, frag_index, count, retries):
+ self.to_screen(
+ '[download] Got server HTTP error: %s. Retrying fragment %d (attempt %d of %s)...'
+ % (error_to_compat_str(err), frag_index, count, self.format_retries(retries)))
+
+ def report_skip_fragment(self, frag_index):
+ self.to_screen('[download] Skipping fragment %d...' % frag_index)
+
+ def _prepare_url(self, info_dict, url):
+ headers = info_dict.get('http_headers')
+ return sanitized_Request(url, None, headers) if headers else url
+
def _prepare_and_start_frag_download(self, ctx):
self._prepare_frag_download(ctx)
self._start_frag_download(ctx)
+ def _download_fragment(self, ctx, frag_url, info_dict, headers=None):
+ down = io.BytesIO()
+ success = ctx['dl'].download(down, {
+ 'url': frag_url,
+ 'http_headers': headers or info_dict.get('http_headers'),
+ })
+ if not success:
+ return False, None
+ frag_content = down.getvalue()
+ down.close()
+ return True, frag_content
+
+ def _append_fragment(self, ctx, frag_content):
+ ctx['dest_stream'].write(frag_content)
+ if not (ctx.get('live') or ctx['tmpfilename'] == '-'):
+ frag_index_stream, _ = sanitize_open(ctx['tmpfilename'] + '.fragindex', 'w')
+ frag_index_stream.write(compat_str(ctx['frag_index']))
+ frag_index_stream.close()
+
def _prepare_frag_download(self, ctx):
- self.to_screen('[%s] Total fragments: %d' % (self.FD_NAME, ctx['total_frags']))
+ 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', None),
+ 'ratelimit': self.params.get('ratelimit'),
+ 'retries': self.params.get('retries', 0),
+ 'nopart': self.params.get('nopart', False),
'test': self.params.get('test', False),
}
)
tmpfilename = self.temp_name(ctx['filename'])
- dest_stream, tmpfilename = sanitize_open(tmpfilename, 'wb')
+ open_mode = 'wb'
+ resume_len = 0
+ frag_index = 0
+ # Establish possible resume length
+ if os.path.isfile(encodeFilename(tmpfilename)):
+ open_mode = 'ab'
+ resume_len = os.path.getsize(encodeFilename(tmpfilename))
+ if os.path.isfile(encodeFilename(tmpfilename + '.fragindex')):
+ frag_index_stream, _ = sanitize_open(tmpfilename + '.fragindex', 'r')
+ frag_index = int(frag_index_stream.read())
+ frag_index_stream.close()
+ dest_stream, tmpfilename = sanitize_open(tmpfilename, open_mode)
+
ctx.update({
'dl': dl,
'dest_stream': dest_stream,
'tmpfilename': tmpfilename,
+ 'frag_index': frag_index,
+ # Total complete fragments downloaded so far in bytes
+ 'complete_frags_downloaded_bytes': resume_len,
})
def _start_frag_download(self, ctx):
# hook
state = {
'status': 'downloading',
- 'downloaded_bytes': 0,
- 'frag_index': 0,
+ 'downloaded_bytes': ctx['complete_frags_downloaded_bytes'],
+ 'frag_index': ctx['frag_index'],
'frag_count': total_frags,
'filename': ctx['filename'],
'tmpfilename': ctx['tmpfilename'],
}
+
start = time.time()
- ctx['started'] = start
+ ctx.update({
+ 'started': start,
+ # 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
- frag_total_bytes = s.get('total_bytes', 0)
- if s['status'] == 'finished':
- state['downloaded_bytes'] += frag_total_bytes
- state['frag_index'] += 1
-
- estimated_size = (
- (state['downloaded_bytes'] + frag_total_bytes) /
- (state['frag_index'] + 1) * total_frags)
time_now = time.time()
- state['total_bytes_estimate'] = estimated_size
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':
- progress = self.calc_percent(state['frag_index'], total_frags)
+ state['frag_index'] += 1
+ ctx['frag_index'] = state['frag_index']
+ 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']
- frag_progress = self.calc_percent(frag_downloaded_bytes,
- frag_total_bytes)
- progress = self.calc_percent(state['frag_index'], total_frags)
- progress += frag_progress / float(total_frags)
-
- state['eta'] = self.calc_eta(
- start, time_now, estimated_size, state['downloaded_bytes'] + frag_downloaded_bytes)
- state['speed'] = s.get('speed')
+ 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)
def _finish_frag_download(self, ctx):
ctx['dest_stream'].close()
+ if os.path.isfile(encodeFilename(ctx['tmpfilename'] + '.fragindex')):
+ os.remove(encodeFilename(ctx['tmpfilename'] + '.fragindex'))
elapsed = time.time() - ctx['started']
self.try_rename(ctx['tmpfilename'], ctx['filename'])
fsize = os.path.getsize(encodeFilename(ctx['filename']))
projects / youtube-dl / blobdiff