j, d Z ddlZddlZddlmZmZ G d d Z G d de Z G d d
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A partial parser for WebVTT segments. Interprets enough of the WebVTT stream
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timestamps on the way, while everything else is passed through unmodified.
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. The X-TIMESTAMP-MAP extension is described
in RFC 8216 §3.5 .
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An object that maintains the current parsing position and allows
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Convert a parsed WebVTT timestamp (a re.Match obtained from _REGEX_TS)
into an MPEG PES timestamp: a tick counter at 90 kHz resolution.
Z c 3 F K | ] \ }}t |xs d |z yw)r N)r ).0partmults r z _parse_ts..i s( l",$DIA ls !)i6 i` i r T)strict)sumzipgroupstss r _parse_tsrM d s;
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Convert an MPEG PES timestamp into a WebVTT timestamp.
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An abstract WebVTT block.
c N |j D ] \ }}t | || y r )itemssetattr)r kwargskeyvals r r zBlock.__init__z s' $HC D#s # $r c |j | j }|sy |j | | |j d S )Nr )raw)r _REGEXr# r )clsr> ms r parsez Block.parse~ s9 LL $qqwwqz""r c : |j | j y r )writerZ r streams r
write_intozBlock.write_into s TXX r N)r* r+ r, r- r classmethodr^ rc r. r r rR rR u s% $ # # r rR c e Zd ZdZy) HeaderBlockzm
A WebVTT block that may only appear in the header part of the file,
i.e. before any cue blocks.
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[ \t]*,[ \t]*z6(?:(?!-->)[^\r\n])+:(?:(?!-->)[^\r\n])+(?:\r\n|[\r\n])c |j } |j | j }|r:|j t }| t | t | }|Zt | |j | j }|r't |j d }|t | t | |j | j r|j t rn t | |j fS )Nr ) r) r% _REGEX_TSMAP_LOCAL _REGEX_TSr: rM _REGEX_TSMAP_MPEGTSr r _REGEX_TSMAP_SEP _REGEX_NLr6 )r\ r> r] localmpegtss r
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zX-TIMESTAMP-MAP=LOCAL:r z,MPEGTS:)r` rt ro rp rP r ru ra s r rc zMagic.write_into s X :: ! LL $ T :: LL1 2 LL$**2HDJJaP Q LL $ LLDKK,CT[[K L LL 99 LL # Tr N)r* r+ r, r compiler[ rv rj rl rm rx rd rw r^ rc r. r r rh rh s
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Nr r. r r r r r r r c 0 e Zd Z ej d Zy) CommentBlockzo(?x)
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A cue block. The payload is not interpreted.
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sy |j t }|sy |j | j }|j t |j t sy t | }t | }||j d nd } t j }
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