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69 lines
2.5 KiB
69 lines
2.5 KiB
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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video_bit_rate and audio_bit_rate properties
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"""
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from rebulk import Rebulk
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from rebulk.remodule import re
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from rebulk.rules import Rule, RemoveMatch, RenameMatch
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from ..common import dash, seps
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from ..common.pattern import is_disabled
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from ..common.validators import seps_surround
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from ...config import load_config_patterns
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def bit_rate(config): # pylint:disable=unused-argument
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"""
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Builder for rebulk object.
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:param config: rule configuration
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:type config: dict
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:return: Created Rebulk object
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:rtype: Rebulk
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"""
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rebulk = Rebulk(disabled=lambda context: (is_disabled(context, 'audio_bit_rate')
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and is_disabled(context, 'video_bit_rate')))
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rebulk = rebulk.regex_defaults(flags=re.IGNORECASE, abbreviations=[dash])
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rebulk.defaults(name='audio_bit_rate', validator=seps_surround)
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load_config_patterns(rebulk, config.get('bit_rate'))
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rebulk.rules(BitRateTypeRule)
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return rebulk
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class BitRateTypeRule(Rule):
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"""
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Convert audio bit rate guess into video bit rate.
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"""
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consequence = [RenameMatch('video_bit_rate'), RemoveMatch]
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def when(self, matches, context):
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to_rename = []
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to_remove = []
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if is_disabled(context, 'audio_bit_rate'):
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to_remove.extend(matches.named('audio_bit_rate'))
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else:
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video_bit_rate_disabled = is_disabled(context, 'video_bit_rate')
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for match in matches.named('audio_bit_rate'):
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previous = matches.previous(match, index=0,
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predicate=lambda m: m.name in ('source', 'screen_size', 'video_codec'))
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if previous and not matches.holes(previous.end, match.start, predicate=lambda m: m.value.strip(seps)):
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after = matches.next(match, index=0, predicate=lambda m: m.name == 'audio_codec')
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if after and not matches.holes(match.end, after.start, predicate=lambda m: m.value.strip(seps)):
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bitrate = match.value
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if bitrate.units == 'Kbps' or (bitrate.units == 'Mbps' and bitrate.magnitude < 10):
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continue
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if video_bit_rate_disabled:
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to_remove.append(match)
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else:
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to_rename.append(match)
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if to_rename or to_remove:
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return to_rename, to_remove
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return False
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