65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
from __future__ import unicode_literals
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from ..downloader import _get_real_downloader
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from .fragment import FragmentFD
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from ..utils import urljoin
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class DashSegmentsFD(FragmentFD):
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"""
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Download segments in a DASH manifest. External downloaders can take over
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the fragment downloads by supporting the 'dash_frag_urls' protocol
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"""
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FD_NAME = 'dashsegments'
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def real_download(self, filename, info_dict):
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fragment_base_url = info_dict.get('fragment_base_url')
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fragments = info_dict['fragments'][:1] if self.params.get(
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'test', False) else info_dict['fragments']
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real_downloader = _get_real_downloader(info_dict, 'dash_frag_urls', self.params, None)
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ctx = {
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'filename': filename,
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'total_frags': len(fragments),
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}
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if real_downloader:
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self._prepare_external_frag_download(ctx)
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else:
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self._prepare_and_start_frag_download(ctx)
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fragments_to_download = []
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frag_index = 0
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for i, fragment in enumerate(fragments):
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frag_index += 1
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if frag_index <= ctx['fragment_index']:
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continue
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fragment_url = fragment.get('url')
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if not fragment_url:
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assert fragment_base_url
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fragment_url = urljoin(fragment_base_url, fragment['path'])
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fragments_to_download.append({
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'frag_index': frag_index,
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'index': i,
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'url': fragment_url,
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})
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if real_downloader:
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self.to_screen(
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'[%s] Fragment downloads will be delegated to %s' % (self.FD_NAME, real_downloader.get_basename()))
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info_copy = info_dict.copy()
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info_copy['fragments'] = fragments_to_download
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fd = real_downloader(self.ydl, self.params)
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# TODO: Make progress updates work without hooking twice
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# for ph in self._progress_hooks:
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# fd.add_progress_hook(ph)
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success = fd.real_download(filename, info_copy)
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if not success:
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return False
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else:
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self.download_and_append_fragments(ctx, fragments_to_download, info_dict)
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return True
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