Class: shaka.util.CmcdManager

A CmcdManager maintains CMCD state as well as a collection of utility functions.

Constructor

new CmcdManager(player, config)

A CmcdManager maintains CMCD state as well as a collection of utility functions.

Parameters:
Name Type Description
player shaka.Player
config shaka.extern.CmcdConfiguration
Source:

Members

CmcdKeys :Array<string>

Type:
  • Array<string>
Properties:
Name Value Type Description
V1Keys ["br","bl","bs","cid","d","dl","mtp","nor","nrr","ot","pr","rtp","sf","sid","st","su","tb","v"] Array<string>
V2CommonKeys ["br","ab","bl","tbl","bs","cdn","cid","ltc","mtp","pr","sf","sid","bg","sta","st","ts","tpb","tb","lb","tab","lab","pt","ec","msd","v","sn"] Array<string>
V2RequestModeKeys ["ab","bl","tbl","bs","cdn","cid","d","dl","ltc","mtp","nor","ot","pr","rtp","sf","sid","bg","sta","st","su","ts","tpb","tb","lb","tab","lab","pt","ec","msd","v"] Array<string>
V2ResponseModeKeys ["d","dl","nor","ot","rtp","rc","su","ttfb","ttfbb","ttlb","url","cmsdd","cmsds"] Array<string>
V2EventKeys ["e","sta"] Array<string>
CmcdV2Events ["ps","e","t","c","b","m","um","pe","pc"] Array<string>
CmcdV2PlayStates ["s","p","a","w","k","r","f","e","q","d"] Array<string>
Source:

CmcdMode :string

Type:
  • string
Properties:
Name Value Type Description
REQUEST request string
RESPONSE response string
EVENT event string
Source:

CmcdV2Constants :number

Type:
  • number
Properties:
Name Value Type Description
TIME_INTERVAL_DEFAULT_VALUE 10 number
Source:

CmcdV2Keys :string

Type:
  • string
Properties:
Name Value Type Description
TIMESTAMP ts string
TIME_INTERVAL_EVENT t string
Source:

ObjectType :string

Type:
  • string
Properties:
Name Value Type Description
MANIFEST m string
AUDIO a string
VIDEO v string
MUXED av string
INIT i string
CAPTION c string
TIMED_TEXT tt string
KEY k string
OTHER o string
Source:

StreamingFormat :string

Type:
  • string
Properties:
Name Value Type Description
DASH d string
LOW_LATENCY_DASH ld string
HLS h string
LOW_LATENCY_HLS lh string
SMOOTH s string
OTHER o string
Source:

StreamType :string

Type:
  • string
Properties:
Name Value Type Description
VOD v string
LIVE l string
Source:

Version :number

Type:
  • number
Properties:
Name Value Type Description
VERSION_1 1 number
VERSION_2 2 number
Source:

buffering_ :boolean

Type:
  • boolean
Source:

cmcdSequenceNumbers_ :Object<string, {request: number, response: number}>

Type:
  • Object<string, {request: number, response: number}>
Source:

config_ :shaka.extern.CmcdConfiguration

Type:
Source:

eventManager_ :shaka.util.EventManager

Type:
Source:

eventTimers_ :Array<shaka.util.Timer>

Type:
Source:

lowLatency_ :boolean

Type:
  • boolean
Source:

msdSent_ :{request: boolean, response: boolean, event: boolean}

Type:
Source:

playbackPlayingTime_ :number|undefined

Type:
  • number | undefined
Source:

playbackPlayTime_ :number|undefined

Type:
  • number | undefined
Source:

playbackStarted_ :boolean

Type:
  • boolean
Source:

player_ :shaka.Player

Type:
Source:

requestTimestampMap_ :Map<!shaka.extern.Request, number>

Type:
Source:

sf_ :shaka.util.CmcdManager.StreamingFormat|undefined

Streaming format
Type:
Source:

startTimeOfLoad_ :number

Type:
  • number
Source:

starved_ :boolean

Type:
  • boolean
Source:

video_ :HTMLMediaElement

Type:
Source:

video_ :HTMLVideoElement

Type:
  • HTMLVideoElement
Source:

Methods

appendQueryToUri(uri, query) → {string}

Append query args to a uri.
Parameters:
Name Type Description
uri string
query string
Source:
Returns:
Type
string

serialize(data) → {string}

Serialize a CMCD data object according to the rules defined in the section 3.2 of [CTA-5004](https://cdn.cta.tech/cta/media/media/resources/standards/pdfs/cta-5004-final.pdf).
Parameters:
Name Type Description
data CmcdData The CMCD data object
Source:
Returns:
Type
string

toHeaders(data) → {Object}

Convert a CMCD data object to request headers according to the rules defined in the section 2.1 and 3.2 of [CTA-5004](https://cdn.cta.tech/cta/media/media/resources/standards/pdfs/cta-5004-final.pdf).
Parameters:
Name Type Description
data CmcdData The CMCD data object
Source:
Returns:
Type
Object

toQuery(data) → {string}

Convert a CMCD data object to query args according to the rules defined in the section 2.2 and 3.2 of [CTA-5004](https://cdn.cta.tech/cta/media/media/resources/standards/pdfs/cta-5004-final.pdf).
Parameters:
Name Type Description
data CmcdData The CMCD data object
Source:
Returns:
Type
string

urlToRelativePath(url, base) → {string}

Constructs a relative path from a URL
Parameters:
Name Type Description
url string
base string
Source:
Returns:
Type
string

appendSrcData(uri, mimeType) → {string}

Apply CMCD data to streams loaded via src=.
Parameters:
Name Type Description
uri string
mimeType string
Source:
Returns:
Type
string

appendTextTrackData(uri) → {string}

Apply CMCD data to side car text track uri.
Parameters:
Name Type Description
uri string
Source:
Returns:
Type
string

applyCmcdDataToRequest_(outputnon-null, requestnon-null, useHeaders)

Modifies an existing request object by adding CMCD data to it.
Parameters:
Name Type Description
output CmcdData The CMCD data to apply.
request shaka.extern.Request The request object to modify.
useHeaders boolean Whether to use headers or query parameters.
Source:

applyManifestData(requestnon-null, context)

Apply CMCD data to a manifest request.
Parameters:
Name Type Description
request shaka.extern.Request The request to apply CMCD data to
context shaka.extern.RequestContext The request context
Source:

applyRequest_(requestnon-null, datanon-null)

Apply CMCD data to a request.
Parameters:
Name Type Description
request shaka.extern.Request The request to apply CMCD data to
data CmcdData The data object
Source:

applyRequestData(typenon-null, requestnon-null, contextopt)

Apply CMCD data to a request.
Parameters:
Name Type Attributes Description
type shaka.net.NetworkingEngine.RequestType The request type
request shaka.extern.Request The request to apply CMCD data to
context shaka.extern.RequestContext <optional>
 The request context
Source:

applyRequestSegmentData(requestnon-null, context)

Apply CMCD data to a segment request
Parameters:
Name Type Description
request shaka.extern.Request
context shaka.extern.RequestContext The request context
Source:

applyResponse_(responsenon-null, datanon-null)

Apply CMCD data to a response.
Parameters:
Name Type Description
response shaka.extern.Response The request to apply CMCD data to
data CmcdData The data object
Source:

applyResponseData(typenon-null, responsenon-null, contextopt)

Apply CMCD data to a response.
Parameters:
Name Type Attributes Description
type shaka.net.NetworkingEngine.RequestType The request type
response shaka.extern.Response The response to apply CMCD data to
context shaka.extern.RequestContext <optional>
 The request context
Source:

applyResponseSegmentData(responsenon-null, context)

Apply CMCD data to a segment response
Parameters:
Name Type Description
response shaka.extern.Response
context shaka.extern.RequestContext The request context
Source:

applyTextData(requestnon-null)

Apply CMCD data to a text request
Parameters:
Name Type Description
request shaka.extern.Request
Source:

calculateMSD_() → {number|undefined}

Calculate measured start delay
Source:
Returns:
Type
number | undefined

calculateRtp_(stream, segment) → {number}

Calculate requested maximum throughput
Parameters:
Name Type Description
stream shaka.extern.Stream
segment shaka.media.SegmentReference
Source:
Returns:
Type
number

checkValidKeys_(includeKeys, allowedKeys, mode) → {Array<string>}

Checks if the keys in `includeKeys` are valid against a list of `allowedKeys`. It logs an error for any invalid key and returns a new array containing only the valid keys. If `includeKeys` is empty or not provided, it returns all `allowedKeys`.
Parameters:
Name Type Description
includeKeys Array<string> Keys to validate.
allowedKeys Array<string> The list of allowed keys.
mode string Mode ('query', 'header' or 'event') for error logging.
Source:
Returns:
A new array containing only the valid keys.
Type
Array<string>

configure(config)

Called by the Player to provide an updated configuration any time it changes.
Parameters:
Name Type Description
config shaka.extern.CmcdConfiguration
Source:

createData_() → {CmcdData}

Create baseline CMCD data
Source:
Returns:
Type
CmcdData

filterKeys_(data, includeKeys) → {CmcdData}

Filter the CMCD data object to include only the keys specified in the configuration.
Parameters:
Name Type Description
data CmcdData
includeKeys Array<string>
Source:
Returns:
Type
CmcdData

getBufferLength_(type) → {number}

Get the buffer length for a media type in milliseconds
Parameters:
Name Type Description
type string
Source:
Returns:
Type
number

getCmcdTargetHash_(objnon-null) → {string}

Creates a stable string key from a configuration object. This is used to uniquely identify a CMCD target.
Parameters:
Name Type Description
obj Object The object to hash.
Source:
Returns:
Type
string

getCurrentTime_() → {number}

Get player time.
Source:
Returns:
Type
number

getDataForSegment_(context, requestUrinullable) → {CmcdData}

Get CMCD data for a segment.
Parameters:
Name Type Attributes Description
context shaka.extern.RequestContext The request context
requestUri string <nullable>
Source:
Returns:
Type
CmcdData

getEventModeEnabledTargets_() → {Array<shaka.extern.CmcdTarget>}

Source:
Returns:
Type
Array<shaka.extern.CmcdTarget>

getGenericData_(datanon-null, modenon-null) → {CmcdData}

Get generic CMCD data.
Parameters:
Name Type Description
data CmcdData The data object
mode shaka.util.CmcdManager.CmcdMode
Source:
Returns:
Type
CmcdData

getObjectType_(context) → {shaka.util.CmcdManager.ObjectType|undefined}

The CMCD object type.
Parameters:
Name Type Description
context shaka.extern.RequestContext The request context
Source:
Returns:
Type
shaka.util.CmcdManager.ObjectType | undefined

getObjectTypeFromMimeType_(mimeTypenon-null) → {shaka.util.CmcdManager.ObjectType|undefined}

The CMCD object type from mimeType.
Parameters:
Name Type Description
mimeType string
Source:
Returns:
Type
shaka.util.CmcdManager.ObjectType | undefined

getRemainingBufferLength_(type) → {number}

Get the remaining buffer length for a media type in milliseconds
Parameters:
Name Type Description
type string
Source:
Returns:
Type
number

getResponseModeEnabledTargets() → {Array<shaka.extern.CmcdTarget>}

Source:
Returns:
Type
Array<shaka.extern.CmcdTarget>

getStreamFormat_(type) → {shaka.util.CmcdManager.StreamingFormat|undefined}

Get the stream format
Parameters:
Name Type Description
type shaka.net.NetworkingEngine.AdvancedRequestType The request's advanced type
Source:
Returns:
Type
shaka.util.CmcdManager.StreamingFormat | undefined

getStreamType_() → {shaka.util.CmcdManager.StreamType}

Get the stream type
Source:
Returns:
Type
shaka.util.CmcdManager.StreamType

getTopBandwidth_(type) → {number}

Get the highest bandwidth for a given type.
Parameters:
Name Type Description
type shaka.util.CmcdManager.ObjectType | undefined
Source:
Returns:
Type
number

isValidEvent_(includeEvents, data) → {boolean}

Parameters:
Name Type Description
includeEvents Array<string>
data CmcdData
Source:
Returns:
Type
boolean

onPlaybackPlay_()

Set playbackPlayTime_ when the play event is triggered
Source:

onPlaybackPlaying_()

Set playbackPlayingTime_
Source:

removeCmcdQueryFromUri_(uri) → {string}

Removes the CMCD query parameter from a URI.
Parameters:
Name Type Description
uri string
Source:
Returns:
Type
string

reportEvent_(eventType, extraData)

Parameters:
Name Type Description
eventType string
extraData CmcdData
Source:

reset()

Resets the CmcdManager.
Source:

sendCmcdRequest_(cmcdDatanon-null, target, responseopt)

Creates and sends a new, out-of-band request to a CMCD endpoint. This is used for event and response reporting.
Parameters:
Name Type Attributes Description
cmcdData CmcdData The CMCD data to send.
target shaka.extern.CmcdTarget The CMCD target configuration.
response shaka.extern.Response <optional>
 Optional response object to update, used by the applyResponse flow.
Source:

setBuffering(buffering)

Set the buffering state
Parameters:
Name Type Description
buffering boolean
Source:

setLowLatency(lowLatency)

Set the low latency
Parameters:
Name Type Description
lowLatency boolean
Source:

setMediaElement(mediaElement)

Set media element and setup event listeners
Parameters:
Name Type Description
mediaElement HTMLMediaElement The video element
Source:

setStartTimeOfLoad(startTimeOfLoad)

Set start time of load if autoplay is enabled
Parameters:
Name Type Description
startTimeOfLoad number
Source:

setupEventListeners_()

Setup event listeners.
Source:

setupEventModeTimeInterval_()

Sets up TimeInterval timer for CMCD 'EVENT' mode targets.
Source:

stopAndClearEventTimers_()

Stops and clears all the event timers for timeInterval
Source: