bazarr/libs/guessit/rules/properties/audio_codec.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
audio_codec, audio_profile and audio_channels property
"""
from rebulk.remodule import re
from rebulk import Rebulk, Rule, RemoveMatch
from ..common import dash
from ..common.validators import seps_before, seps_after
audio_properties = ['audio_codec', 'audio_profile', 'audio_channels']
def audio_codec():
"""
Builder for rebulk object.
:return: Created Rebulk object
:rtype: Rebulk
"""
rebulk = Rebulk().regex_defaults(flags=re.IGNORECASE, abbreviations=[dash]).string_defaults(ignore_case=True)
def audio_codec_priority(match1, match2):
"""
Gives priority to audio_codec
:param match1:
:type match1:
:param match2:
:type match2:
:return:
:rtype:
"""
if match1.name == 'audio_codec' and match2.name in ['audio_profile', 'audio_channels']:
return match2
if match1.name in ['audio_profile', 'audio_channels'] and match2.name == 'audio_codec':
return match1
return '__default__'
rebulk.defaults(name="audio_codec", conflict_solver=audio_codec_priority)
rebulk.regex("MP3", "LAME", r"LAME(?:\d)+-?(?:\d)+", value="MP3")
rebulk.regex('Dolby', 'DolbyDigital', 'Dolby-Digital', 'DD', 'AC3D?', value='AC3')
rebulk.regex("DolbyAtmos", "Dolby-Atmos", "Atmos", value="DolbyAtmos")
rebulk.string("AAC", value="AAC")
rebulk.string('EAC3', 'DDP', 'DD+', value="EAC3")
rebulk.string("Flac", value="FLAC")
rebulk.string("DTS", value="DTS")
rebulk.regex("True-?HD", value="TrueHD")
rebulk.defaults(name="audio_profile")
rebulk.string("HD", value="HD", tags="DTS")
rebulk.regex("HD-?MA", value="HDMA", tags="DTS")
rebulk.string("HE", value="HE", tags="AAC")
rebulk.string("LC", value="LC", tags="AAC")
rebulk.string("HQ", value="HQ", tags="AC3")
rebulk.defaults(name="audio_channels")
rebulk.regex(r'(7[\W_][01](?:ch)?)(?:[^\d]|$)', value='7.1', children=True)
rebulk.regex(r'(5[\W_][01](?:ch)?)(?:[^\d]|$)', value='5.1', children=True)
rebulk.regex(r'(2[\W_]0(?:ch)?)(?:[^\d]|$)', value='2.0', children=True)
rebulk.regex('7[01]', value='7.1', validator=seps_after, tags='weak-audio_channels')
rebulk.regex('5[01]', value='5.1', validator=seps_after, tags='weak-audio_channels')
rebulk.string('20', value='2.0', validator=seps_after, tags='weak-audio_channels')
rebulk.string('7ch', '8ch', value='7.1')
rebulk.string('5ch', '6ch', value='5.1')
rebulk.string('2ch', 'stereo', value='2.0')
rebulk.string('1ch', 'mono', value='1.0')
rebulk.rules(DtsRule, AacRule, Ac3Rule, AudioValidatorRule, HqConflictRule, AudioChannelsValidatorRule)
return rebulk
class AudioValidatorRule(Rule):
"""
Remove audio properties if not surrounded by separators and not next each others
"""
priority = 64
consequence = RemoveMatch
def when(self, matches, context):
ret = []
audio_list = matches.range(predicate=lambda match: match.name in audio_properties)
for audio in audio_list:
if not seps_before(audio):
valid_before = matches.range(audio.start - 1, audio.start,
lambda match: match.name in audio_properties)
if not valid_before:
ret.append(audio)
continue
if not seps_after(audio):
valid_after = matches.range(audio.end, audio.end + 1,
lambda match: match.name in audio_properties)
if not valid_after:
ret.append(audio)
continue
return ret
class AudioProfileRule(Rule):
"""
Abstract rule to validate audio profiles
"""
priority = 64
dependency = AudioValidatorRule
consequence = RemoveMatch
def __init__(self, codec):
super(AudioProfileRule, self).__init__()
self.codec = codec
def when(self, matches, context):
profile_list = matches.named('audio_profile', lambda match: self.codec in match.tags)
ret = []
for profile in profile_list:
codec = matches.previous(profile, lambda match: match.name == 'audio_codec' and match.value == self.codec)
if not codec:
codec = matches.next(profile, lambda match: match.name == 'audio_codec' and match.value == self.codec)
if not codec:
ret.append(profile)
return ret
class DtsRule(AudioProfileRule):
"""
Rule to validate DTS profile
"""
def __init__(self):
super(DtsRule, self).__init__("DTS")
class AacRule(AudioProfileRule):
"""
Rule to validate AAC profile
"""
def __init__(self):
super(AacRule, self).__init__("AAC")
class Ac3Rule(AudioProfileRule):
"""
Rule to validate AC3 profile
"""
def __init__(self):
super(Ac3Rule, self).__init__("AC3")
class HqConflictRule(Rule):
"""
Solve conflict between HQ from other property and from audio_profile.
"""
dependency = [DtsRule, AacRule, Ac3Rule]
consequence = RemoveMatch
def when(self, matches, context):
hq_audio = matches.named('audio_profile', lambda match: match.value == 'HQ')
hq_audio_spans = [match.span for match in hq_audio]
hq_other = matches.named('other', lambda match: match.span in hq_audio_spans)
if hq_other:
return hq_other
class AudioChannelsValidatorRule(Rule):
"""
Remove audio_channel if no audio codec as previous match.
"""
priority = 128
consequence = RemoveMatch
def when(self, matches, context):
ret = []
for audio_channel in matches.tagged('weak-audio_channels'):
valid_before = matches.range(audio_channel.start - 1, audio_channel.start,
lambda match: match.name == 'audio_codec')
if not valid_before:
ret.append(audio_channel)
return ret