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[YoutubeDL] Use a progress hook for progress reporting 

Instead of every downloader calling two helper functions, let our progress report be an ordinary progress hook like everyone else's.
Closes #4875.
This commit is contained in:
Philipp Hagemeister 2015-02-17 21:37:48 +01:00
parent 98f000409f
commit 5cda4eda72
5 changed files with 128 additions and 73 deletions
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13
youtube_dl/YoutubeDL.py
View File

@ -199,18 +199,25 @@ class YoutubeDL(object):
postprocessor.
progress_hooks: A list of functions that get called on download
progress, with a dictionary with the entries
* status: One of "downloading" and "finished".
* status: One of "downloading", "error", or "finished".
Check this first and ignore unknown values.
If status is one of "downloading" or "finished", the
If status is one of "downloading", or "finished", the
following properties may also be present:
* filename: The final filename (always present)
* tmpfilename: The filename we're currently writing to
* downloaded_bytes: Bytes on disk
* total_bytes: Size of the whole file, None if unknown
* tmpfilename: The filename we're currently writing to
* total_bytes_estimate: Guess of the eventual file size,
None if unavailable.
* elapsed: The number of seconds since download started.
* eta: The estimated time in seconds, None if unknown
* speed: The download speed in bytes/second, None if
unknown
* fragment_index: The counter of the currently
downloaded video fragment.
* fragment_count: The number of fragments (= individual
files that will be merged)
Progress hooks are guaranteed to be called at least once
(with status "finished") if the download is successful.

87
youtube_dl/downloader/common.py
View File

@ -1,4 +1,4 @@
from __future__ import unicode_literals
from __future__ import division, unicode_literals
import os
import re
@ -54,6 +54,7 @@ class FileDownloader(object):
self.ydl = ydl
self._progress_hooks = []
self.params = params
self.add_progress_hook(self.report_progress)
@staticmethod
def format_seconds(seconds):
@ -226,42 +227,64 @@ class FileDownloader(object):
self.to_screen(clear_line + fullmsg, skip_eol=not is_last_line)
self.to_console_title('youtube-dl ' + msg)
def report_progress(self, percent, data_len_str, speed, eta):
"""Report download progress."""
if self.params.get('noprogress', False):
def report_progress(self, s):
if s['status'] == 'finished':
if self.params.get('noprogress', False):
self.to_screen('[download] Download completed')
else:
s['_total_bytes_str'] = format_bytes(s['total_bytes'])
if s.get('elapsed') is not None:
s['_elapsed_str'] = self.format_seconds(s['elapsed'])
msg_template = '100%% of %(_total_bytes_str)s in %(_elapsed_str)s'
else:
msg_template = '100%% of %(_total_bytes_str)s'
self._report_progress_status(
msg_template % s, is_last_line=True)
if self.params.get('noprogress'):
return
if eta is not None:
eta_str = self.format_eta(eta)
else:
eta_str = 'Unknown ETA'
if percent is not None:
percent_str = self.format_percent(percent)
else:
percent_str = 'Unknown %'
speed_str = self.format_speed(speed)
msg = ('%s of %s at %s ETA %s' %
(percent_str, data_len_str, speed_str, eta_str))
self._report_progress_status(msg)
def report_progress_live_stream(self, downloaded_data_len, speed, elapsed):
if self.params.get('noprogress', False):
if s['status'] != 'downloading':
return
downloaded_str = format_bytes(downloaded_data_len)
speed_str = self.format_speed(speed)
elapsed_str = FileDownloader.format_seconds(elapsed)
msg = '%s at %s (%s)' % (downloaded_str, speed_str, elapsed_str)
self._report_progress_status(msg)
def report_finish(self, data_len_str, tot_time):
"""Report download finished."""
if self.params.get('noprogress', False):
self.to_screen('[download] Download completed')
if s.get('eta') is not None:
s['_eta_str'] = self.format_eta(s['eta'])
else:
self._report_progress_status(
('100%% of %s in %s' %
(data_len_str, self.format_seconds(tot_time))),
is_last_line=True)
s['_eta_str'] = 'Unknown ETA'
if s.get('total_bytes') and s.get('downloaded_bytes') is not None:
s['_percent_str'] = self.format_percent(100 * s['downloaded_bytes'] / s['total_bytes'])
elif s.get('total_bytes_estimate') and s.get('downloaded_bytes') is not None:
s['_percent_str'] = self.format_percent(100 * s['downloaded_bytes'] / s['total_bytes_estimate'])
else:
if s.get('downloaded_bytes') == 0:
s['_percent_str'] = self.format_percent(0)
else:
s['_percent_str'] = 'Unknown %'
if s.get('speed') is not None:
s['_speed_str'] = self.format_speed(s['speed'])
else:
s['_speed_str'] = 'Unknown speed'
if s.get('total_bytes') is not None:
s['_total_bytes_str'] = format_bytes(s['total_bytes'])
msg_template = '%(_percent_str)s of %(_total_bytes_str)s at %(_speed_str)s ETA %(_eta_str)s'
elif s.get('total_bytes_estimate') is not None:
s['_total_bytes_estimate_str'] = format_bytes(s['total_bytes_estimate'])
msg_template = '%(_percent_str)s of ~%(_total_bytes_estimate_str)s at %(_speed_str)s ETA %(_eta_str)s'
else:
if s.get('downloaded_bytes') is not None:
s['_downloaded_bytes_str'] = format_bytes(s['downloaded_bytes'])
if s.get('elapsed'):
s['_elapsed_str'] = self.format_seconds(s['elapsed'])
msg_template = '%(_downloaded_bytes_str)s at %(_speed_str)s (%(_elapsed_str)s)'
else:
msg_template = '%(_downloaded_bytes_str)s at %(_speed_str)s'
else:
msg_template = '%(_percent_str)s % at %(_speed_str)s ETA %(_eta_str)s'
self._report_progress_status(msg_template % s)
def report_resuming_byte(self, resume_len):
"""Report attempt to resume at given byte."""

70
youtube_dl/downloader/f4m.py
View File

@ -1,4 +1,4 @@
from __future__ import unicode_literals
from __future__ import division, unicode_literals
import base64
import io
@ -252,17 +252,6 @@ class F4mFD(FileDownloader):
requested_bitrate = info_dict.get('tbr')
self.to_screen('[download] Downloading f4m manifest')
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)
@ -298,39 +287,67 @@ class F4mFD(FileDownloader):
# 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'))
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),
}
)
tmpfilename = self.temp_name(filename)
(dest_stream, tmpfilename) = sanitize_open(tmpfilename, 'wb')
write_flv_header(dest_stream)
write_metadata_tag(dest_stream, metadata)
# This dict stores the download progress, it's updated by the progress
# hook
state = {
'status': 'downloading',
'downloaded_bytes': 0,
'frag_counter': 0,
'frag_index': 0,
'frag_count': total_frags,
'filename': filename,
'tmpfilename': tmpfilename,
}
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':
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_counter'] += 1
progress = self.calc_percent(state['frag_counter'], total_frags)
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
if s['status'] == 'finished':
progress = self.calc_percent(state['frag_index'], total_frags)
byte_counter = state['downloaded_bytes']
else:
frag_downloaded_bytes = status['downloaded_bytes']
frag_downloaded_bytes = s['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 = self.calc_percent(state['frag_index'], 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)
state['eta'] = self.calc_eta(
start, time_now, estimated_size, state['downloaded_bytes'] + frag_downloaded_bytes)
state['speed'] = s.get('speed')
self._hook_progress(state)
http_dl.add_progress_hook(frag_progress_hook)
frags_filenames = []
@ -354,8 +371,8 @@ class F4mFD(FileDownloader):
frags_filenames.append(frag_filename)
dest_stream.close()
self.report_finish(format_bytes(state['downloaded_bytes']), time.time() - start)
elapsed = time.time() - start
self.try_rename(tmpfilename, filename)
for frag_file in frags_filenames:
os.remove(frag_file)
@ -366,6 +383,7 @@ class F4mFD(FileDownloader):
'total_bytes': fsize,
'filename': filename,
'status': 'finished',
'elapsed': elapsed,
})
return True

13
youtube_dl/downloader/http.py
View File

@ -200,16 +200,16 @@ class HttpFD(FileDownloader):
else:
percent = self.calc_percent(byte_counter, data_len)
eta = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
self.report_progress(percent, data_len_str, speed, eta)
self._hook_progress({
'status': 'downloading',
'downloaded_bytes': byte_counter,
'total_bytes': data_len,
'tmpfilename': tmpfilename,
'filename': filename,
'status': 'downloading',
'eta': eta,
'speed': speed,
'elapsed': now - start,
})
if is_test and byte_counter == data_len:
@ -221,7 +221,13 @@ class HttpFD(FileDownloader):
return False
if tmpfilename != '-':
stream.close()
self.report_finish(data_len_str, (time.time() - start))
self._hook_progress({
'downloaded_bytes': byte_counter,
'total_bytes': data_len,
'tmpfilename': tmpfilename,
'status': 'error',
})
if data_len is not None and byte_counter != data_len:
raise ContentTooShortError(byte_counter, int(data_len))
self.try_rename(tmpfilename, filename)
@ -235,6 +241,7 @@ class HttpFD(FileDownloader):
'total_bytes': byte_counter,
'filename': filename,
'status': 'finished',
'elapsed': time.time() - start,
})
return True

18
youtube_dl/downloader/rtmp.py
View File

@ -51,23 +51,23 @@ class RtmpFD(FileDownloader):
if not resume_percent:
resume_percent = percent
resume_downloaded_data_len = downloaded_data_len
eta = self.calc_eta(start, time.time(), 100 - resume_percent, percent - resume_percent)
speed = self.calc_speed(start, time.time(), downloaded_data_len - resume_downloaded_data_len)
time_now = time.time()
eta = self.calc_eta(start, time_now, 100 - resume_percent, percent - resume_percent)
speed = self.calc_speed(start, time_now, downloaded_data_len - resume_downloaded_data_len)
data_len = None
if percent > 0:
data_len = int(downloaded_data_len * 100 / percent)
data_len_str = '~' + format_bytes(data_len)
self.report_progress(percent, data_len_str, speed, eta)
cursor_in_new_line = False
self._hook_progress({
'status': 'downloading',
'downloaded_bytes': downloaded_data_len,
'total_bytes': data_len,
'total_bytes_estimate': data_len,
'tmpfilename': tmpfilename,
'filename': filename,
'status': 'downloading',
'eta': eta,
'elapsed': time_now - start,
'speed': speed,
})
cursor_in_new_line = False
else:
# no percent for live streams
mobj = re.search(r'([0-9]+\.[0-9]{3}) kB / [0-9]+\.[0-9]{2} sec', line)
@ -75,15 +75,15 @@ class RtmpFD(FileDownloader):
downloaded_data_len = int(float(mobj.group(1)) * 1024)
time_now = time.time()
speed = self.calc_speed(start, time_now, downloaded_data_len)
self.report_progress_live_stream(downloaded_data_len, speed, time_now - start)
cursor_in_new_line = False
self._hook_progress({
'downloaded_bytes': downloaded_data_len,
'tmpfilename': tmpfilename,
'filename': filename,
'status': 'downloading',
'elapsed': time_now - start,
'speed': speed,
})
cursor_in_new_line = False
elif self.params.get('verbose', False):
if not cursor_in_new_line:
self.to_screen('')