-from __future__ import unicode_literals
+from __future__ import division, unicode_literals
import base64
import io
import time
import xml.etree.ElementTree as etree
-from .common import FileDownloader
-from .http import HttpFD
+from .fragment import FragmentFD
from ..compat import (
compat_urlparse,
+ compat_urllib_error,
)
from ..utils import (
struct_pack,
struct_unpack,
- format_bytes,
- encodeFilename,
- sanitize_open,
xpath_text,
)
self.read_unsigned_int() # BootstrapinfoVersion
# Profile,Live,Update,Reserved
- self.read(1)
+ flags = self.read_unsigned_char()
+ live = flags & 0x20 != 0
# time scale
self.read_unsigned_int()
# CurrentMediaTime
return {
'segments': segments,
'fragments': fragments,
+ 'live': live,
}
def read_bootstrap_info(self):
for segment, fragments_count in segment_run_table['segment_run']:
for _ in range(fragments_count):
res.append((segment, next(fragments_counter)))
+
+ if boot_info['live']:
+ res = res[-2:]
+
return res
return '{http://ns.adobe.com/f4m/1.0}%s' % prop
-class HttpQuietDownloader(HttpFD):
- def to_screen(self, *args, **kargs):
- pass
-
-
-class F4mFD(FileDownloader):
+class F4mFD(FragmentFD):
"""
A downloader for f4m manifests or AdobeHDS.
"""
+ FD_NAME = 'f4m'
+
def _get_unencrypted_media(self, doc):
media = doc.findall(_add_ns('media'))
if not media:
self.report_error('Unsupported DRM')
return media
+ def _get_bootstrap_from_url(self, bootstrap_url):
+ bootstrap = self.ydl.urlopen(bootstrap_url).read()
+ return read_bootstrap_info(bootstrap)
+
+ def _update_live_fragments(self, bootstrap_url, latest_fragment):
+ fragments_list = []
+ retries = 30
+ while (not fragments_list) and (retries > 0):
+ boot_info = self._get_bootstrap_from_url(bootstrap_url)
+ fragments_list = build_fragments_list(boot_info)
+ fragments_list = [f for f in fragments_list if f[1] > latest_fragment]
+ if not fragments_list:
+ # Retry after a while
+ time.sleep(5.0)
+ retries -= 1
+
+ if not fragments_list:
+ self.report_error('Failed to update fragments')
+
+ return fragments_list
+
+ def _parse_bootstrap_node(self, node, base_url):
+ if node.text is None:
+ bootstrap_url = compat_urlparse.urljoin(
+ base_url, node.attrib['url'])
+ boot_info = self._get_bootstrap_from_url(bootstrap_url)
+ else:
+ bootstrap_url = None
+ bootstrap = base64.b64decode(node.text.encode('ascii'))
+ boot_info = read_bootstrap_info(bootstrap)
+ return (boot_info, bootstrap_url)
+
def real_download(self, filename, info_dict):
man_url = info_dict['url']
requested_bitrate = info_dict.get('tbr')
- self.to_screen('[download] Downloading f4m manifest')
+ self.to_screen('[%s] Downloading f4m manifest' % self.FD_NAME)
manifest = self.ydl.urlopen(man_url).read()
- self.report_destination(filename)
- http_dl = HttpQuietDownloader(
- self.ydl,
- {
- 'continuedl': True,
- 'quiet': True,
- 'noprogress': True,
- 'ratelimit': self.params.get('ratelimit', None),
- 'test': self.params.get('test', False),
- }
- )
doc = etree.fromstring(manifest)
formats = [(int(f.attrib.get('bitrate', -1)), f)
base_url = compat_urlparse.urljoin(man_url, media.attrib['url'])
bootstrap_node = doc.find(_add_ns('bootstrapInfo'))
- if bootstrap_node.text is None:
- bootstrap_url = compat_urlparse.urljoin(
- base_url, bootstrap_node.attrib['url'])
- bootstrap = self.ydl.urlopen(bootstrap_url).read()
- else:
- bootstrap = base64.b64decode(bootstrap_node.text)
+ boot_info, bootstrap_url = self._parse_bootstrap_node(bootstrap_node, base_url)
+ live = boot_info['live']
metadata_node = media.find(_add_ns('metadata'))
if metadata_node is not None:
- metadata = base64.b64decode(metadata_node.text)
+ metadata = base64.b64decode(metadata_node.text.encode('ascii'))
else:
metadata = None
- boot_info = read_bootstrap_info(bootstrap)
fragments_list = build_fragments_list(boot_info)
if self.params.get('test', False):
# For some akamai manifests we'll need to add a query to the fragment url
akamai_pv = xpath_text(doc, _add_ns('pv-2.0'))
- tmpfilename = self.temp_name(filename)
- (dest_stream, tmpfilename) = sanitize_open(tmpfilename, 'wb')
+ ctx = {
+ 'filename': filename,
+ 'total_frags': total_frags,
+ }
+
+ self._prepare_frag_download(ctx)
+
+ dest_stream = ctx['dest_stream']
+
write_flv_header(dest_stream)
- write_metadata_tag(dest_stream, metadata)
+ if not live:
+ write_metadata_tag(dest_stream, metadata)
- # This dict stores the download progress, it's updated by the progress
- # hook
- state = {
- 'downloaded_bytes': 0,
- 'frag_counter': 0,
- }
- start = time.time()
-
- def frag_progress_hook(status):
- frag_total_bytes = status.get('total_bytes', 0)
- estimated_size = (state['downloaded_bytes'] +
- (total_frags - state['frag_counter']) * frag_total_bytes)
- if status['status'] == 'finished':
- state['downloaded_bytes'] += frag_total_bytes
- state['frag_counter'] += 1
- progress = self.calc_percent(state['frag_counter'], total_frags)
- byte_counter = state['downloaded_bytes']
- else:
- frag_downloaded_bytes = status['downloaded_bytes']
- byte_counter = state['downloaded_bytes'] + frag_downloaded_bytes
- frag_progress = self.calc_percent(frag_downloaded_bytes,
- frag_total_bytes)
- progress = self.calc_percent(state['frag_counter'], total_frags)
- progress += frag_progress / float(total_frags)
-
- eta = self.calc_eta(start, time.time(), estimated_size, byte_counter)
- self.report_progress(progress, format_bytes(estimated_size),
- status.get('speed'), eta)
- http_dl.add_progress_hook(frag_progress_hook)
+ self._start_frag_download(ctx)
frags_filenames = []
- for (seg_i, frag_i) in fragments_list:
+ while fragments_list:
+ seg_i, frag_i = fragments_list.pop(0)
name = 'Seg%d-Frag%d' % (seg_i, frag_i)
url = base_url + name
if akamai_pv:
url += '?' + akamai_pv.strip(';')
- frag_filename = '%s-%s' % (tmpfilename, name)
- success = http_dl.download(frag_filename, {'url': url})
- if not success:
- return False
- with open(frag_filename, 'rb') as down:
+ if info_dict.get('extra_param_to_segment_url'):
+ url += info_dict.get('extra_param_to_segment_url')
+ frag_filename = '%s-%s' % (ctx['tmpfilename'], name)
+ try:
+ success = ctx['dl'].download(frag_filename, {'url': url})
+ if not success:
+ return False
+ (down, frag_sanitized) = sanitize_open(frag_filename, 'rb')
down_data = down.read()
+ down.close()
reader = FlvReader(down_data)
while True:
_, box_type, box_data = reader.read_box_info()
if box_type == b'mdat':
dest_stream.write(box_data)
break
- frags_filenames.append(frag_filename)
-
- dest_stream.close()
- self.report_finish(format_bytes(state['downloaded_bytes']), time.time() - start)
+ if live:
+ os.remove(encodeFilename(frag_sanitized))
+ else:
+ frags_filenames.append(frag_sanitized)
+ except (compat_urllib_error.HTTPError, ) as err:
+ if live and (err.code == 404 or err.code == 410):
+ # We didn't keep up with the live window. Continue
+ # with the next available fragment.
+ msg = 'Fragment %d unavailable' % frag_i
+ self.report_warning(msg)
+ fragments_list = []
+ else:
+ raise
+
+ if not fragments_list and live and bootstrap_url:
+ fragments_list = self._update_live_fragments(bootstrap_url, frag_i)
+ total_frags += len(fragments_list)
+ if fragments_list and (fragments_list[0][1] > frag_i + 1):
+ msg = 'Missed %d fragments' % (fragments_list[0][1] - (frag_i + 1))
+ self.report_warning(msg)
+
+ self._finish_frag_download(ctx)
- self.try_rename(tmpfilename, filename)
for frag_file in frags_filenames:
- os.remove(frag_file)
-
- fsize = os.path.getsize(encodeFilename(filename))
- self._hook_progress({
- 'downloaded_bytes': fsize,
- 'total_bytes': fsize,
- 'filename': filename,
- 'status': 'finished',
- })
+ os.remove(encodeFilename(frag_file))
return True
projects / youtube-dl / blobdiff