Class: shaka.dash.DashParser

Constructor

new DashParser()

Creates a new DASH parser.
Implements:
Source:

Members

SCTE214_ :string

Type:
  • string
Source:

SUPPORTED_ESSENTIAL_PROPERTIES_ :Set<string>

The set of EssentialProperty scheme URIs recognized by the parser. This is the single source of truth for EssentialProperty support and is used to: - enforce the MPD-level conformance rule of ISO/IEC 23009-1 clause 5.8.4.8 (if an MPD-level EssentialProperty, or a group sharing the same id attribute, uses only schemes outside this set, the presentation must be terminated); and - decide in parseAdaptationSet_ whether an unrecognized EssentialProperty makes the containing AdaptationSet unusable. Keep this in sync with the scheme handling in parseAdaptationSet_ and parseRepresentation_. Schemes that are recognized but intentionally ignored (e.g. MatrixCoefficients, pattern:2024, urlparam:2025) are listed here without dedicated handling.
Type:
  • Set<string>
Source:

UP_NAMESPACE_2014_ :string

Namespace of the UrlQueryInfo element used by the urlparam:2014 scheme.
Type:
  • string
Source:

UP_NAMESPACE_2016_ :string

Namespace of the ExtUrlQueryInfo / ExtHttpHeaderInfo elements used by the urlparam:2016 scheme.
Type:
  • string
Source:

URL_PARAM_DESCRIPTOR_SCHEMES_ :Set<string>

The EssentialProperty/SupplementalProperty scheme URIs that signal flexible insertion of URL query parameters via a UrlQueryInfo (2014) or ExtUrlQueryInfo (2016) child element (ISO/IEC 23009-1 Annex I). The urlparam:2025 scheme is handled separately through RequestParam elements.
Type:
  • Set<string>
Source:

averageUpdateDuration_ :shaka.abr.Ewma

An ewma that tracks how long updates take. This is to mitigate issues caused by slow parsing on embedded devices.
Type:
Source:

config_ :shaka.extern.ManifestConfiguration

Type:
Source:

contentProtection_ :shaka.dash.ContentProtection

Type:
Source:

contentSteeringManager_ :shaka.util.ContentSteeringManager

Type:
Source:

contextCache_ :Map<string, !shaka.dash.DashParser.Context>

This is a cache is used the store a snapshot of the context object which is built up throughout node traversal to maintain a current state. This data needs to be preserved for parsing patches. The key is a combination period and representation id's.
Type:
Source:

continuityCache_ :Map<string, {endTime: number, timeline: number, reps: Array<string>}>

Type:
  • Map<string, {endTime: number, timeline: number, reps: Array<string>}>
Source:

eventManager_ :shaka.util.EventManager

Type:
Source:

gapCount_ :number

Type:
  • number
Source:

globalId_ :number

Type:
  • number
Source:

indexStreamMap_ :Map<string, !Array<string>>

A map of Period IDs to Stream Map IDs. Use to have direct access to streamMap key.
Type:
  • Map<string, !Array<string>>
Source:

isLowLatency_ :boolean

Type:
  • boolean
Source:

isTransitionFromDynamicToStatic_ :boolean

Type:
  • boolean
Source:

largestPeriodStartTime_ :number

Largest period start time seen.
Type:
  • number
Source:

lastCalculatedBaseUris_ :Array<string>

Type:
  • Array<string>
Source:

lastManifestQueryParams_ :string

Type:
  • string
Source:

lastManifestUpdatePeriodIds_ :Array<string>

Period IDs seen in previous manifest.
Type:
  • Array<string>
Source:

lowLatencyMode_ :boolean

Type:
  • boolean
Source:

manifest_ :shaka.extern.Manifest

Type:
Source:

manifestPatchContext_ :shaka.dash.DashParser.PatchContext

A context of the living manifest used for processing Patch MPD's
Type:
Source:

manifestUris_ :Array<string>

Type:
  • Array<string>
Source:

mediaElement_ :HTMLMediaElement

Type:
Source:

minTotalAvailabilityTimeOffset_ :number

The minimum of the availabilityTimeOffset values among the adaptation sets.
Type:
  • number
Source:

mpdpatchUrlParamsFn_ :function

Type:
  • function
Source:

mpdUrlParamsFn_ :function

Type:
  • function
Source:

operationManager_ :shaka.util.OperationManager

Type:
Source:

parsedPeriodCache_ :Map<string, !shaka.extern.Period>

Cache of parsed periods keyed by Period ID.
Type:
Source:

parsedPrftNodes_ :Set<!shaka.extern.xml.Node>

Used to track which prft nodes have been already parsed to avoid duplicating work for all representations.
Type:
Source:

patchLocationNodes_ :Array<shaka.extern.xml.Node>

Type:
Source:

periodCombiner_ :shaka.util.PeriodCombiner

Type:
Source:

periodDurations_ :Map<string, number>

A map of period ids to their durations
Type:
  • Map<string, number>
Source:

playerInterface_ :shaka.extern.ManifestParser.PlayerInterface

Type:
Source:

streamMap_ :Map<string, !shaka.extern.Stream>

A map of IDs to Stream objects. ID: Period@id,Representation@id e.g.: '1,23'
Type:
Source:

updatePeriod_ :number

The update period in seconds, or 0 for no updates.
Type:
  • number
Source:

updateTimer_ :shaka.util.Timer

Type:
Source:

Methods

defaultUrlParams_() → {string}

Source:
Returns:
Type
string

guessContentType_(mimeType, codecs) → {string}

Guess the content type based on MIME type and codecs.
Parameters:
Name Type Description
mimeType string
codecs string
Source:
Returns:
Type
string

isNtpScheme_(scheme) → {boolean}

Parameters:
Name Type Description
scheme string
Source:
Returns:
Type
boolean

makeBaseUriGetter_(contentSteeringManagernullable, someLocationValid, lastCalculatedBaseUris) → {function(): !Array<string>}

Parameters:
Name Type Attributes Description
contentSteeringManager shaka.util.ContentSteeringManager <nullable>
someLocationValid boolean
lastCalculatedBaseUris Array<string>
Source:
Returns:
Type
function(): !Array<string>

banLocation(uri)

Tells the parser that a location should be banned. This is called on retry.
Parameters:
Name Type Description
uri string
Implements:
Source:

buildUrlQueryFn_(elemnon-null) → {?function(): string}

Builds a URL query-parameters function from an element carrying the UrlQueryInfo / ExtendedUrlInfo attributes (@useMPDUrlQuery, @queryString and @queryTemplate). This is the shared engine for the urlparam:2014, urlparam:2016 and urlparam:2025 schemes (ISO/IEC 23009-1 Annex I); the element is either a UrlQueryInfo/ExtUrlQueryInfo child (2014/2016) or a RequestParam element (2025).
Parameters:
Name Type Description
elem shaka.extern.xml.Node
Source:
Returns:
Type
?function(): string

checkMpdEssentialProperties_(mpdnon-null)

Enforces the EssentialProperty conformance rule at MPD level (ISO/IEC 23009-1 clause 5.8.4.8). EssentialProperty descriptors are grouped by their id attribute, and for each group at least one scheme must be recognized by the parser. If a whole group is unrecognized, the content cannot be presented and parsing fails.
Parameters:
Name Type Description
mpd shaka.extern.xml.Node
Source:

cleanContinuityCache_(periodsnon-null)

Clean continuityCache Object to remove reference of removed periods. This should end up running after the current manifest has been processed so that it can use previous periods to calculate the continuity of the new periods.
Parameters:
Name Type Description
periods Array<shaka.extern.Period>
Source:

cleanStreamMap_()

Clean StreamMap Object to remove reference of deleted Stream Object
Source:

cloneContext_(contextnon-null) → {shaka.dash.DashParser.Context}

Clone context and remove xml document references.
Parameters:
Name Type Description
context shaka.dash.DashParser.Context
Source:
Returns:
Type
shaka.dash.DashParser.Context

configure(config, isPreloadFnopt)

Called by the Player to provide an updated configuration any time the configuration changes. Will be called at least once before start().
Parameters:
Name Type Attributes Description
config shaka.extern.ManifestConfiguration
isPreloadFn function <optional>
Implements:
Source:

createFrame_(elemnon-null, parentnullable, getBaseUrisnullable) → {shaka.dash.DashParser.InheritanceFrame}

Creates a new inheritance frame for the given element.
Parameters:
Name Type Attributes Description
elem shaka.extern.xml.Node
parent shaka.dash.DashParser.InheritanceFrame <nullable>
getBaseUris ?function(): !Array<string> <nullable>
Source:
Returns:
Type
shaka.dash.DashParser.InheritanceFrame

emsgSchemeIdUris_(inBandEventStreamsnon-null, emsgSchemeIdUrisnon-null) → {Array<string>}

Returns a new array of InbandEventStream schemeIdUri containing the union of the ones parsed from inBandEventStreams and the ones provided in emsgSchemeIdUris.
Parameters:
Name Type Description
inBandEventStreams Array<!shaka.extern.xml.Node> Array of InbandEventStream elements to parse and add to the returned array.
emsgSchemeIdUris Array<string> Array of parsed InbandEventStream schemeIdUri attributes to add to the returned array.
Source:
Returns:
schemeIdUris Array of parsed InbandEventStream schemeIdUri attributes.
Type
Array<string>

findRequestParamFn_(nodenon-null, includeInType) → {function|undefined}

Returns the URL params function for the last matching RequestParam child element whose includeInRequests attribute contains includeInType or '*'.
Parameters:
Name Type Description
node shaka.extern.xml.Node
includeInType string
Source:
Returns:
Type
function | undefined

getContextIdsFromPath_(pathsnon-null) → {Array<string>}

Parameters:
Name Type Description
paths Array<shaka.util.TXml.PathNode>
Source:
Returns:
Type
Array<string>

getPatchLocationUris_() → {Array<string>}

Source:
Returns:
Type
Array<string>

getStreamsFromSets_(disabled, adaptationSetsnon-null, contentType)

Gets the streams from the given sets or returns an empty array if disabled or no streams are found.
Parameters:
Name Type Description
disabled boolean
adaptationSets Array<!shaka.dash.DashParser.AdaptationInfo>
contentType string
Source:

getURLParametersFunction_(elemnon-null) → {?function(): string}

Returns the URL query-parameters function for a urlparam:2014 or urlparam:2016 EssentialProperty/SupplementalProperty descriptor, reading its UrlQueryInfo (2014) or ExtUrlQueryInfo (2016) child element.
Parameters:
Name Type Description
elem shaka.extern.xml.Node
Source:
Returns:
Type
?function(): string

isPreloadFn_()

Source:

makeNetworkRequest_(request, type, contextopt) → {Promise<shaka.extern.Response>}

Create a networking request. This will manage the request using the parser's operation manager.
Parameters:
Name Type Attributes Description
request shaka.extern.Request
type shaka.net.NetworkingEngine.RequestType
context shaka.extern.RequestContext <optional>
Source:
Returns:
Type
Promise<shaka.extern.Response>

modifySegmentTemplate_(patchNodenon-null) → {Array<string>}

Modifies SegmentTemplate based on MPD patch.
Parameters:
Name Type Description
patchNode shaka.extern.xml.Node
Source:
Returns:
context ids with updated timeline
Type
Array<string>

modifyTimepoints_(patchNodenon-null) → {Array<string>}

Ingests Patch MPD segments into timeline.
Parameters:
Name Type Description
patchNode shaka.extern.xml.Node
Source:
Returns:
context ids with updated timeline
Type
Array<string>

onExpirationUpdated(sessionId, expiration)

Tells the parser that the expiration time of an EME session has changed. Implementing this is optional.
Parameters:
Name Type Description
sessionId string
expiration number
Implements:
Source:

onInitialVariantChosen(variant)

Tells the parser that the initial variant has been chosen.
Parameters:
Name Type Description
variant shaka.extern.Variant
Implements:
Source:

onUpdate_() → {Promise}

Called when the update timer ticks.
Source:
Returns:
Type
Promise

parseAdaptationSet_(context, position, elemnon-null) → {shaka.dash.DashParser.AdaptationInfo}

Parses an AdaptationSet XML element.
Parameters:
Name Type Description
context shaka.dash.DashParser.Context
position number
elem shaka.extern.xml.Node The AdaptationSet element.
Source:
Returns:
Type
shaka.dash.DashParser.AdaptationInfo

parseAudioChannels_(audioChannelConfigsnon-null) → {number}

Parameters:
Name Type Description
audioChannelConfigs Array<!shaka.extern.xml.Node> An array of AudioChannelConfiguration elements.
Source:
Returns:
The number of audio channels, or null if unknown.
Type
number

parseEventStream_(periodStart, periodDurationnullable, elemnon-null, availabilityStart)

Parses an EventStream element.
Parameters:
Name Type Attributes Description
periodStart number
periodDuration number <nullable>
elem shaka.extern.xml.Node
availabilityStart number
Source:

parseManifest(data, finalManifestUri, rootElement) → {Promise}

Parses the manifest XML. This also handles updates and will update the stored manifest.
Parameters:
Name Type Description
data BufferSource
finalManifestUri string The final manifest URI, which may differ from this.manifestUri_ if there has been a redirect.
rootElement string MPD or Patch, depending on context
Source:
Returns:
Type
Promise

parseMpdChaining_(mpdnon-null) → {string}

Reads chaining url.
Parameters:
Name Type Description
mpd shaka.extern.xml.Node
Source:
Returns:
Type
string

parsePatchMediaPresentationDurationChange_(durationString)

Parameters:
Name Type Description
durationString string
Source:

parsePatchMpdTypeChange_(mpdTypenon-null)

Handles manifest type changes, this transition is expected to be "dynamic" to "static".
Parameters:
Name Type Description
mpdType string
Source:

parsePatchPeriod_(periodsnon-null)

Ingests a full MPD period element from a patch update
Parameters:
Name Type Description
periods shaka.extern.xml.Node
Source:

parsePatchSegment_(contextId)

Parses modified segments.
Parameters:
Name Type Description
contextId string
Source:

parsePeriod_(context, getBaseUris, periodInfo) → {shaka.extern.Period}

Parses a Period XML element. Unlike the other parse methods, this is not given the Node; it is given a PeriodInfo structure. Also, partial parsing was done before this was called so start and duration are valid.
Parameters:
Name Type Description
context shaka.dash.DashParser.Context
getBaseUris function(): !Array<string>
periodInfo shaka.dash.DashParser.PeriodInfo
Source:
Returns:
Type
shaka.extern.Period

parsePeriods_(context, getBaseUris, mpdnon-null, newPeriodnon-null) → {{periods: !Array<shaka.extern.Period>, duration: ?number, durationDerivedFromPeriods: boolean}}

Reads and parses the periods from the manifest. This first does some partial parsing so the start and duration is available when parsing children.
Parameters:
Name Type Description
context shaka.dash.DashParser.Context
getBaseUris function(): !Array<string>
mpd shaka.extern.xml.Node
newPeriod boolean
Source:
Returns:
Type
{periods: !Array<shaka.extern.Period>, duration: ?number, durationDerivedFromPeriods: boolean}

parseProducerReferenceTime_(prftNodenon-null, streamInfonon-null, presentationTimelinenon-null)

Parameters:
Name Type Description
prftNode shaka.extern.xml.Node
streamInfo shaka.dash.DashParser.StreamInfo
presentationTimeline shaka.media.PresentationTimeline
Source:

parseRepresentation_(context, contentProtection, kind, language, labelnullable, isPrimary, rolesnon-null, closedCaptions, nodenon-null, accessibilityPurposenullable, lastSegmentNumbernullable) → {shaka.extern.Stream}

Parses a Representation XML element.
Parameters:
Name Type Attributes Description
context shaka.dash.DashParser.Context
contentProtection shaka.dash.ContentProtection.Context
kind string | undefined
language string
label string <nullable>
isPrimary boolean
roles Array<string>
closedCaptions Map<string, string>
node shaka.extern.xml.Node
accessibilityPurpose shaka.media.ManifestParser.AccessibilityPurpose <nullable>
lastSegmentNumber number <nullable>
Source:
Returns:
The Stream, or null when there is a non-critical parsing error.
Type
shaka.extern.Stream

parseServiceDescription_(mpdnon-null) → {shaka.extern.ServiceDescription}

Reads maxLatency and maxPlaybackRate properties from service description element.
Parameters:
Name Type Description
mpd shaka.extern.xml.Node
Source:
Returns:
Type
shaka.extern.ServiceDescription

parseUtcTiming_(getBaseUris, elementsnon-null) → {Promise<number>}

Parses an array of UTCTiming elements.
Parameters:
Name Type Description
getBaseUris function(): !Array<string>
elements Array<!shaka.extern.xml.Node>
Source:
Returns:
Type
Promise<number>

periodIdFallback_(start) → {string}

Parameters:
Name Type Description
start number
Source:
Returns:
Type
string

postPeriodProcessing_(periodsnon-null, isPatchUpdate)

Handles common procedures after processing new periods.
Parameters:
Name Type Description
periods Array<shaka.extern.Period> to be appended
isPatchUpdate boolean does call comes from mpd patch update
Source:

processManifest_(mpdnon-null, finalManifestUri) → {Promise}

Takes a formatted MPD and converts it into a manifest.
Parameters:
Name Type Description
mpd shaka.extern.xml.Node
finalManifestUri string The final manifest URI, which may differ from this.manifestUri_ if there has been a redirect.
Source:
Returns:
Type
Promise

processParsedMpd(mpdnullable, finalManifestUri, rootElement) → {Promise}

Common point for processing an already parsed MPD (whether it comes from direct XML or from JSON converted to XML by the subclass).
Parameters:
Name Type Attributes Description
mpd shaka.extern.xml.Node <nullable>
finalManifestUri string
rootElement string
Source:
Returns:
Type
Promise

processPatchManifest_(mpdnon-null) → {Promise}

Takes a formatted Patch MPD and converts it into a manifest.
Parameters:
Name Type Description
mpd shaka.extern.xml.Node
Source:
Returns:
Type
Promise

prunePeriodCache_(periodsnon-null)

Parameters:
Name Type Description
periods Array<shaka.extern.Period>
Source:

removePatchPeriod_(periodId)

Parameters:
Name Type Description
periodId string
Source:

requestForTiming_(getBaseUris, uri, method) → {Promise<number>}

Makes a request to the given URI and calculates the clock offset.
Parameters:
Name Type Description
getBaseUris function(): !Array<string>
uri string
method string
Source:
Returns:
Type
Promise<number>

requestManifest_() → {Promise<number>}

Makes a network request for the manifest and parses the resulting data.
Source:
Returns:
Resolves with the time it took, in seconds, to fulfill the request and parse the data.
Type
Promise<number>

requestSegment_(urisnon-null, startBytenullable, endBytenullable, isInit) → {Promise<BufferSource>}

Makes a network request on behalf of SegmentBase.createStreamInfo.
Parameters:
Name Type Attributes Description
uris Array<string>
startByte number <nullable>
endByte number <nullable>
isInit boolean
Source:
Returns:
Type
Promise<BufferSource>

setMediaElement(mediaElement)

Set media element.
Parameters:
Name Type Description
mediaElement HTMLMediaElement
Implements:
Source:

setUpdateTimer_(offset)

Sets the update timer. Does nothing if the manifest does not specify an update period.
Parameters:
Name Type Description
offset number An offset, in seconds, to apply to the manifest's update period.
Source:

start(uri, playerInterface) → {Promise<shaka.extern.Manifest>}

Initialize and start the parser. When |start| resolves, it should return the initial version of the manifest. |start| will only be called once. If |stop| is called while |start| is pending, |start| should reject.
Parameters:
Name Type Description
uri string The URI of the manifest.
playerInterface shaka.extern.ManifestParser.PlayerInterface The player interface contains the callbacks and members that the parser can use to communicate with the player and outside world.
Implements:
Source:
Returns:
Type
Promise<shaka.extern.Manifest>

stop() → {Promise}

Tell the parser that it must stop and free all internal resources as soon as possible. Only once all internal resources are stopped and freed will the promise resolve. Once stopped a parser will not be started again. The parser should support having |stop| called multiple times and the promise should always resolve.
Implements:
Source:
Returns:
Type
Promise

update()

Tells the parser to do a manual manifest update. Implementing this is optional. This is only called when 'emsg' boxes are present.
Implements:
Source:

updateNow_()

Update now the manifest
Source:

updatePatchLocationNodes_(patchNodenon-null)

Parameters:
Name Type Description
patchNode shaka.extern.xml.Node
Source:

verifyRepresentation_(frame) → {boolean}

Verifies that a Representation has exactly one Segment* element. Prints warnings if there is a problem.
Parameters:
Name Type Description
frame shaka.dash.DashParser.InheritanceFrame
Source:
Returns:
True if the Representation is usable; otherwise return false.
Type
boolean

Type Definitions

AdaptationInfo

Contains information about an AdaptationSet element.
Type:
Properties:
Name Type Attributes Description
id string The unique ID of the adaptation set.
contentType string <nullable>
 The content type of the AdaptationSet.
language string The language of the AdaptationSet.
main boolean Whether the AdaptationSet has the 'main' type.
streams Array<shaka.extern.Stream> The streams this AdaptationSet contains.
drmInfos Array<shaka.extern.DrmInfo> The DRM info for the AdaptationSet.
trickModeFor string <nullable>
 If non-null, this AdaptationInfo represents trick mode tracks. This property is the ID of the normal AdaptationSet these tracks should be associated with.
representationIds Array<string> An array of the IDs of the Representations this AdaptationSet contains.
dependencyStreamMap Map<string, string> A map of dependencyStream
Source:

Context

Contains context data for the streams. This is designed to be shallow-copyable, so the parser must overwrite (not modify) each key as the parser moves through the manifest and the parsing context changes.
Type:
Properties:
Name Type Attributes Description
dynamic boolean True if the MPD is dynamic (not all segments available at once)
presentationTimeline shaka.media.PresentationTimeline The PresentationTimeline.
period shaka.dash.DashParser.InheritanceFrame <nullable>
 The inheritance from the Period element.
periodInfo shaka.dash.DashParser.PeriodInfo <nullable>
 The Period info for the current Period.
adaptationSet shaka.dash.DashParser.InheritanceFrame <nullable>
 The inheritance from the AdaptationSet element.
representation shaka.dash.DashParser.InheritanceFrame <nullable>
 The inheritance from the Representation element.
bandwidth number The bandwidth of the Representation, or zero if missing.
indexRangeWarningGiven boolean True if the warning about SegmentURL@indexRange has been printed.
availabilityTimeOffset number The sum of the availabilityTimeOffset values that apply to the element.
profiles Array<string> Profiles of DASH are defined to enable interoperability and the signaling of the use of features.
mediaPresentationDuration number <nullable>
 Media presentation duration, or null if unknown.
urlParams function The query params for the segments.
name string The name of the context if this is needed. Eg: clone streams for dependencyStream.
Source:

GenerateSegmentIndexFunction

An async function which generates and returns a SegmentIndex.
Type:
Source:

InheritanceFrame

A collection of elements and properties which are inherited across levels of a DASH manifest.
Type:
  • {segmentBase: ?shaka.extern.xml.Node, segmentList: ?shaka.extern.xml.Node, segmentTemplate: ?shaka.extern.xml.Node, producerReferenceTime: ?shaka.extern.xml.Node, getBaseUris: function(): !Array<string>, width: (number|undefined), height: (number|undefined), contentType: string, mimeType: string, codecs: string, supplementalCodecs: string, frameRate: (number|undefined), pixelAspectRatio: (string|undefined), emsgSchemeIdUris: !Array<string>, id: ?string, originalId: ?string, position: (number|undefined), language: ?string, numChannels: ?number, audioSamplingRate: ?number, availabilityTimeOffset: number, initialization: ?string, aesKey: (shaka.extern.aesKey|undefined), segmentSequenceCadence: number, label: ?string, encrypted: boolean}
Properties:
Name Type Attributes Description
segmentBase shaka.extern.xml.Node <nullable>
 The XML node for SegmentBase.
segmentList shaka.extern.xml.Node <nullable>
 The XML node for SegmentList.
segmentTemplate shaka.extern.xml.Node <nullable>
 The XML node for SegmentTemplate.
producerReferenceTime shaka.extern.xml.Node <nullable>
 The XML node for ProducerReferenceTime.
getBaseUris function Function than returns an array of absolute base URIs for the frame.
width number | undefined The inherited width value.
height number | undefined The inherited height value.
contentType string The inherited media type.
mimeType string The inherited MIME type value.
codecs string The inherited codecs value.
supplementalCodecs string The inherited supplemental codecs value.
frameRate number | undefined The inherited framerate value.
pixelAspectRatio string | undefined The inherited pixel aspect ratio value.
emsgSchemeIdUris Array<string> emsg registered schemeIdUris.
id string <nullable>
 The ID of the element.
originalId string <nullable>
 The original ID of the element.
position number | undefined Position of the element used for indexing in case of no id
language string <nullable>
 The original language of the element.
numChannels number <nullable>
 The number of audio channels, or null if unknown.
audioSamplingRate number <nullable>
 Specifies the maximum sampling rate of the content, or null if unknown.
availabilityTimeOffset number Specifies the total availabilityTimeOffset of the segment, or 0 if unknown.
initialization string <nullable>
 Specifies the file where the init segment is located, or null.
aesKey shaka.extern.aesKey | undefined AES-128 Content protection key
segmentSequenceCadence number Specifies the cadence of independent segments in Segment Sequence Representation.
label string <nullable>
 Label or null if unknown.
encrypted boolean Specifies is encrypted or not.
Source:

PatchContext

Type:
  • {mpdId: string, type: string, mediaPresentationDuration: ?number, profiles: !Array<string>, availabilityTimeOffset: number, getBaseUris: ?function(): !Array<string>, publishTime: number}
Properties:
Name Type Attributes Description
mpdId string ID of the original MPD file.
type string Specifies the type of the dash manifest i.e. "static"
mediaPresentationDuration number <nullable>
 Media presentation duration, or null if unknown.
profiles Array<string> Profiles of DASH are defined to enable interoperability and the signaling of the use of features.
availabilityTimeOffset number Specifies the total availabilityTimeOffset of the segment.
getBaseUris function <nullable>
 An array of absolute base URIs.
publishTime number Time when manifest has been published, in seconds.
Source:

PeriodInfo

Contains information about a Period element.
Type:
Properties:
Name Type Attributes Description
start number The start time of the period.
duration number <nullable>
 The duration of the period; or null if the duration is not given. This will be non-null for all periods except the last.
node shaka.extern.xml.Node <nullable>
 The XML Node for the Period.
isLastPeriod boolean Whether this Period is the last one in the manifest.
Source:

RequestSegmentCallback

Type:
  • function(!Array<string>, ?number, ?number, boolean): !Promise<BufferSource>
Source:

StreamInfo

Contains information about a Stream. This is passed from the createStreamInfo methods.
Type:
Properties:
Name Type Description
timeline number The continuity timeline, if it has one.
endTime number The current timeline's end time, if it has one.
generateSegmentIndex shaka.dash.DashParser.GenerateSegmentIndexFunction An async function to create the SegmentIndex for the stream.
timescale number The timescale of the stream.
Source: