[f4m] Implement f4m fd in terms of fragment fd
This commit is contained in:
Sergey M․
parent
95d8f7ea12
commit
ab81ef8fa7
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@ -7,8 +7,7 @@ import os
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import time
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import xml.etree.ElementTree as etree
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from .common import FileDownloader
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from .http import HttpFD
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from .fragment import FragmentFD
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from ..compat import (
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compat_urlparse,
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compat_urllib_error,
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@ -16,8 +15,6 @@ from ..compat import (
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from ..utils import (
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struct_pack,
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struct_unpack,
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encodeFilename,
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sanitize_open,
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xpath_text,
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)
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@ -226,16 +223,13 @@ def _add_ns(prop):
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return '{http://ns.adobe.com/f4m/1.0}%s' % prop
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class HttpQuietDownloader(HttpFD):
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def to_screen(self, *args, **kargs):
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pass
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class F4mFD(FileDownloader):
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class F4mFD(FragmentFD):
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"""
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A downloader for f4m manifests or AdobeHDS.
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"""
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FD_NAME = 'f4m'
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def _get_unencrypted_media(self, doc):
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media = doc.findall(_add_ns('media'))
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if not media:
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@ -288,7 +282,7 @@ class F4mFD(FileDownloader):
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def real_download(self, filename, info_dict):
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man_url = info_dict['url']
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requested_bitrate = info_dict.get('tbr')
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self.to_screen('[download] Downloading f4m manifest')
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self.to_screen('[%s] Downloading f4m manifest' % self.FD_NAME)
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manifest = self.ydl.urlopen(man_url).read()
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doc = etree.fromstring(manifest)
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@ -320,67 +314,20 @@ class F4mFD(FileDownloader):
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# For some akamai manifests we'll need to add a query to the fragment url
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akamai_pv = xpath_text(doc, _add_ns('pv-2.0'))
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self.report_destination(filename)
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http_dl = HttpQuietDownloader(
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self.ydl,
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{
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'continuedl': True,
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'quiet': True,
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'noprogress': True,
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'ratelimit': self.params.get('ratelimit', None),
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'test': self.params.get('test', False),
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}
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)
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tmpfilename = self.temp_name(filename)
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(dest_stream, tmpfilename) = sanitize_open(tmpfilename, 'wb')
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ctx = {
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'filename': filename,
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'total_frags': total_frags,
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}
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self._prepare_frag_download(ctx)
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dest_stream = ctx['dest_stream']
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write_flv_header(dest_stream)
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if not live:
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write_metadata_tag(dest_stream, metadata)
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# This dict stores the download progress, it's updated by the progress
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# hook
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state = {
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'status': 'downloading',
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'downloaded_bytes': 0,
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'frag_index': 0,
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'frag_count': total_frags,
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'filename': filename,
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'tmpfilename': tmpfilename,
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}
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start = time.time()
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def frag_progress_hook(s):
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if s['status'] not in ('downloading', 'finished'):
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return
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frag_total_bytes = s.get('total_bytes', 0)
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if s['status'] == 'finished':
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state['downloaded_bytes'] += frag_total_bytes
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state['frag_index'] += 1
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estimated_size = (
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(state['downloaded_bytes'] + frag_total_bytes) /
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(state['frag_index'] + 1) * total_frags)
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time_now = time.time()
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state['total_bytes_estimate'] = estimated_size
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state['elapsed'] = time_now - start
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if s['status'] == 'finished':
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progress = self.calc_percent(state['frag_index'], total_frags)
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else:
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frag_downloaded_bytes = s['downloaded_bytes']
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frag_progress = self.calc_percent(frag_downloaded_bytes,
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frag_total_bytes)
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progress = self.calc_percent(state['frag_index'], total_frags)
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progress += frag_progress / float(total_frags)
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state['eta'] = self.calc_eta(
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start, time_now, estimated_size, state['downloaded_bytes'] + frag_downloaded_bytes)
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state['speed'] = s.get('speed')
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self._hook_progress(state)
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http_dl.add_progress_hook(frag_progress_hook)
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self._start_frag_download(ctx)
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frags_filenames = []
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while fragments_list:
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@ -391,9 +338,9 @@ class F4mFD(FileDownloader):
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url += '?' + akamai_pv.strip(';')
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if info_dict.get('extra_param_to_segment_url'):
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url += info_dict.get('extra_param_to_segment_url')
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frag_filename = '%s-%s' % (tmpfilename, name)
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frag_filename = '%s-%s' % (ctx['tmpfilename'], name)
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try:
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success = http_dl.download(frag_filename, {'url': url})
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success = ctx['dl'].download(frag_filename, {'url': url})
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if not success:
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return False
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with open(frag_filename, 'rb') as down:
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@ -425,20 +372,9 @@ class F4mFD(FileDownloader):
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msg = 'Missed %d fragments' % (fragments_list[0][1] - (frag_i + 1))
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self.report_warning(msg)
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dest_stream.close()
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self._finish_frag_download(ctx)
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elapsed = time.time() - start
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self.try_rename(tmpfilename, filename)
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for frag_file in frags_filenames:
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os.remove(frag_file)
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fsize = os.path.getsize(encodeFilename(filename))
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self._hook_progress({
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'downloaded_bytes': fsize,
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'total_bytes': fsize,
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'filename': filename,
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'status': 'finished',
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'elapsed': elapsed,
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})
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return True
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