244 lines
10 KiB
Python
244 lines
10 KiB
Python
'''
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Match functions take a single Media object instance as its only argument and return
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two boolean values. The first value is if the match was exact or "best fit", the
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second argument is the ID of the format that was matched.
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'''
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from django.conf import settings
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min_height = getattr(settings, 'VIDEO_HEIGHT_CUTOFF', 360)
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fallback_hd_cutoff = getattr(settings, 'VIDEO_HEIGHT_IS_HD', 500)
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def get_best_combined_format(media):
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'''
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Attempts to see if there is a single, combined audio and video format that
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exactly matches the source requirements. This is used over separate audio
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and video formats if possible. Combined formats are the easiest to check
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for as they must exactly match the source profile be be valid.
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'''
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for fmt in media.iter_formats():
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# Check height matches
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if media.source.source_resolution.strip().upper() != fmt['format']:
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continue
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# Check the video codec matches
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if media.source.source_vcodec != fmt['vcodec']:
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continue
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# Check the audio codec matches
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if media.source.source_acodec != fmt['acodec']:
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continue
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# if the source prefers 60fps, check for it
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if media.source.prefer_60fps:
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if not fmt['is_60fps']:
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continue
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# If the source prefers HDR, check for it
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if media.source.prefer_hdr:
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if not fmt['is_hdr']:
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continue
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# If we reach here, we have a combined match!
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return True, fmt['id']
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return False, False
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def get_best_audio_format(media):
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'''
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Finds the best match for the source required audio format. If the source
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has a 'fallback' of fail this can return no match.
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'''
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# Order all audio-only formats by bitrate
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audio_formats = []
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for fmt in media.iter_formats():
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# If the format has a video stream, skip it
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if fmt['vcodec'] is not None:
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continue
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audio_formats.append(fmt)
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audio_formats = list(reversed(sorted(audio_formats, key=lambda k: k['abr'])))
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if not audio_formats:
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# Media has no audio formats at all
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return False, False
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# Find the highest bitrate audio format with a matching codec
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for fmt in audio_formats:
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if media.source.source_acodec == fmt['acodec']:
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# Matched!
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return True, fmt['id']
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# No codecs matched
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if media.source.can_fallback:
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# Can fallback, find the next highest bitrate non-matching codec
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return False, audio_formats[0]
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else:
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# Can't fallback
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return False, False
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def get_best_video_format(media):
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'''
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Finds the best match for the source required video format. If the source
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has a 'fallback' of fail this can return no match. Resolution is treated
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as the most important factor to match. This is pretty verbose due to the
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'soft' matching requirements for prefer_hdr and prefer_60fps.
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'''
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# Check if the source wants audio only, fast path to return
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if media.source.is_audio:
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return False, False
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# Filter video-only formats by resolution that matches the source
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video_formats = []
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for fmt in media.iter_formats():
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# If the format has an audio stream, skip it
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if fmt['acodec'] is not None:
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continue
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if media.source.source_resolution.strip().upper() == fmt['format']:
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video_formats.append(fmt)
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# Check we matched some streams
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if not video_formats:
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# No streams match the requested resolution, see if we can fallback
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if media.source.can_fallback:
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# Find the next-best format matches by height
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for fmt in media.iter_formats():
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# If the format has an audio stream, skip it
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if fmt['acodec'] is not None:
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continue
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if (fmt['height'] <= media.source.source_resolution_height and
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fmt['height'] >= min_height):
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video_formats.append(fmt)
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else:
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# Can't fallback
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return False, False
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video_formats = list(reversed(sorted(video_formats, key=lambda k: k['height'])))
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if not video_formats:
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# Still no matches
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return False, False
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exact_match, best_match = None, None
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# Of our filtered video formats, check for resolution + codec + hdr + fps match
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if media.source.prefer_60fps and media.source.prefer_hdr:
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for fmt in video_formats:
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# Check for an exact match
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if (media.source.source_resolution.strip().upper() == fmt['format'] and
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media.source.source_vcodec == fmt['vcodec'] and
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fmt['is_hdr'] and
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fmt['is_60fps']):
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# Exact match
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exact_match, best_match = True, fmt
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break
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if media.source.can_fallback:
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if not best_match:
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for fmt in video_formats:
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# Check for a codec, hdr and fps match but drop the resolution
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if (media.source.source_vcodec == fmt['vcodec'] and
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fmt['is_hdr'] and fmt['is_60fps']):
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# Close match
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exact_match, best_match = False, fmt
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break
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if not best_match:
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for fmt in video_formats:
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# Check for hdr and fps match but drop the resolution and codec
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if fmt['is_hdr'] and fmt['is_60fps']:
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exact_match, best_match = False, fmt
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break
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if not best_match:
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for fmt in video_formats:
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# Check for fps match but drop the resolution and codec and hdr
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if fmt['is_hdr'] and fmt['is_60fps']:
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exact_match, best_match = False, fmt
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break
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if not best_match:
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# Match the highest resolution
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exact_match, best_match = False, video_formats[0]
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# Check for resolution + codec + fps match
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if media.source.prefer_60fps and not media.source.prefer_hdr:
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for fmt in video_formats:
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# Check for an exact match
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if (media.source.source_resolution.strip().upper() == fmt['format'] and
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media.source.source_vcodec == fmt['vcodec'] and
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fmt['is_60fps']):
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# Exact match
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exact_match, best_match = True, fmt
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break
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if media.source.can_fallback:
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if not best_match:
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for fmt in video_formats:
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# Check for a codec and fps match but drop the resolution
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if (media.source.source_vcodec == fmt['vcodec'] and
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fmt['is_60fps']):
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exact_match, best_match = False, fmt
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break
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if not best_match:
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for fmt in video_formats:
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# Check for an fps match but drop the resolution and codec
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if fmt['is_60fps']:
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exact_match, best_match = False, fmt
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break
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if not best_match:
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# Match the highest resolution
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exact_match, best_match = False, video_formats[0]
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# Check for resolution + codec + hdr
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if media.source.prefer_hdr and not media.source.prefer_60fps:
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for fmt in video_formats:
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# Check for an exact match
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if (media.source.source_resolution.strip().upper() == fmt['format'] and
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media.source.source_vcodec == fmt['vcodec'] and
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fmt['is_hdr']):
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# Exact match
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exact_match, best_match = True, fmt
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break
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if media.source.can_fallback:
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if not best_match:
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for fmt in video_formats:
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# Check for a codec and hdr match but drop the resolution
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if (media.source.source_vcodec == fmt['vcodec'] and
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fmt['is_hdr']):
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exact_match, best_match = True, fmt
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break
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if not best_match:
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for fmt in video_formats:
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# Check for an hdr match but drop the resolution and codec
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if fmt['is_hdr']:
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exact_match, best_match = False, fmt
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break
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if not best_match:
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# Match the highest resolution
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exact_match, best_match = False, video_formats[0]
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# check for resolution + codec
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if not media.source.prefer_hdr and not media.source.prefer_60fps:
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for fmt in video_formats:
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# Check for an exact match
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if (media.source.source_resolution.strip().upper() == fmt['format'] and
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media.source.source_vcodec == fmt['vcodec'] and
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not fmt['is_60fps']):
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# Exact match
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exact_match, best_match = True, fmt
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break
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if media.source.can_fallback:
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if not best_match:
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for fmt in video_formats:
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# Check for a codec match without 60fps and drop the resolution
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if (media.source.source_vcodec == fmt['vcodec'] and
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not fmt['is_60fps']):
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exact_match, best_match = False, fmt
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break
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if not best_match:
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for fmt in video_formats:
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# Check for a codec match but drop the resolution
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if media.source.source_vcodec == fmt['vcodec']:
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# Close match
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exact_match, best_match = False, fmt
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break
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if not best_match:
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# Match the highest resolution
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exact_match, best_match = False, video_formats[0]
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# See if we found a match
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if best_match:
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# Final check to see if the match we found was good enough
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if exact_match:
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return True, best_match['id']
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elif media.source.can_fallback:
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# Allow the fallback if it meets requirements
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if (media.source.fallback == media.source.FALLBACK_NEXT_BEST_HD and
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best_match['height'] >= fallback_hd_cutoff):
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return False, best_match['id']
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elif media.source.fallback == media.source.FALLBACK_NEXT_BEST:
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return False, best_match['id']
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# Nope, failed to find match
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return False, False
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