JSDoc: Class: shaka.text.VttTextParser

Class: shaka.text.VttTextParser

Constructor

new VttTextParser()

Constructs a VTT parser.

Implements:

shaka.extern.TextParser

Source:

lib/text/vtt_text_parser.js, line 24

Members

MPEG_TIMESCALE_ :number

Type:

number

Source:

lib/text/vtt_text_parser.js, line 620

TS_ROLLOVER_ :number

At this value, timestamps roll over in TS content.

Type:

number

Source:

lib/text/vtt_text_parser.js, line 627

manifestType_ :string

Type:

string

Source:

lib/text/vtt_text_parser.js, line 31

sequenceMode_ :boolean

Type:

boolean

Source:

lib/text/vtt_text_parser.js, line 28

Methods

getRegionById_(regionsnon-null, id) → {shaka.text.CueRegion}

Parameters:

Name	Type	Description
`regions`	Array.<!shaka.text.CueRegion>
`id`	string

Source:

lib/text/vtt_text_parser.js, line 480

Returns:

Type: shaka.text.CueRegion

parseCue_(textnon-null, timeOffset, regionsnon-null, stylesnon-null) → {shaka.text.Cue}

Parses a text block into a Cue object.

Parameters:

Name	Type	Description
`text`	Array.<string>
`timeOffset`	number
`regions`	Array.<!shaka.text.CueRegion>
`styles`	Map.<string, !shaka.text.Cue>

Source:

lib/text/vtt_text_parser.js, line 363

Returns:

Type: shaka.text.Cue

parseCueSetting(cuenon-null, word, regionsnon-null) → {boolean}

Parses a WebVTT setting from the given word.

Parameters:

Name	Type	Description
`cue`	shaka.text.Cue
`word`	string
`regions`	Array.<!shaka.text.CueRegion>

Source:

lib/text/vtt_text_parser.js, line 444

Returns:

True on success.

Type: boolean

parsedLineValueAndInterpretation_(cuenon-null, word) → {boolean}

Parameters:

Name	Type	Description
`cue`	shaka.text.Cue
`word`	string

Source:

lib/text/vtt_text_parser.js, line 586

Returns:

Type: boolean

parseRegion_(text) → {shaka.text.CueRegion}

Parses a string into a Region object.

Parameters:

Name	Type	Description
`text`	string

Source:

lib/text/vtt_text_parser.js, line 182

Returns:

Type: shaka.text.CueRegion

parseRegionSetting_(regionnon-null, word) → {boolean}

Parses a WebVTTRegion setting from the given word.

Parameters:

Name	Type	Description
`region`	shaka.text.CueRegion
`word`	string

Source:

lib/text/vtt_text_parser.js, line 504

Returns:

True on success.

Type: boolean

parseStyle_(textnon-null, stylesnon-null)

Parses a style block into a Cue object.

Parameters:

Name	Type	Description
`text`	Array.<string>
`styles`	Map.<string, !shaka.text.Cue>

Source:

lib/text/vtt_text_parser.js, line 215

setPositionAlign_(cuenon-null, align)

Parameters:

Name	Type	Description
`cue`	shaka.text.Cue
`align`	string

Source:

lib/text/vtt_text_parser.js, line 553

setTextAlign_(cuenon-null, align)

Parameters:

Name	Type	Description
`cue`	shaka.text.Cue
`align`	string

Source:

lib/text/vtt_text_parser.js, line 535

setVerticalWritingMode_(cuenon-null, value)

Parameters:

Name	Type	Description
`cue`	shaka.text.Cue
`value`	string

Source:

lib/text/vtt_text_parser.js, line 571

computeHlsSequenceModeOffset_(headerBlock, time) → {number}

Parameters:

Name	Type	Description
`headerBlock`	string	Contains X-TIMESTAMP-MAP.
`time`	shaka.extern.TextParser.TimeContext

Source:

lib/text/vtt_text_parser.js, line 132

Returns:

Type: number

parseInit(datanon-null)

Parse an initialization segment. Some formats do not have init segments so this won't always be called.

Parameters:

Name	Type	Description
`data`	Uint8Array	The data that makes up the init segment.

Implements:

shaka.extern.TextParser#parseInit

Source:

lib/text/vtt_text_parser.js, line 38

parseMedia(datanon-null, timeContext, urinullable, imagesnon-null) → {Array.<!shaka.text.Cue>}

Parse a media segment and return the cues that make up the segment.

Parameters:

Name	Type	Attributes	Description
`data`	Uint8Array		The next section of buffer.
`timeContext`	shaka.extern.TextParser.TimeContext		The time information that should be used to adjust the times values for each cue.
`uri`	string \| undefined	<nullable>	The media uri.
`images`	Array.<string>