Interface: shaka.extern.AbrManager

Implementations:
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Methods

chooseVariant(preferFastSwitchingopt) → {shaka.extern.Variant}

Chooses one variant to switch to. Called by the Player.
Parameters:
Name Type Attributes Description
preferFastSwitching boolean <optional>
 If not provided meant "avoid fast switching if possible".
Source:
Returns:
Type
shaka.extern.Variant

configure(config)

Sets the ABR configuration. It is the responsibility of the AbrManager implementation to implement the restrictions behavior described in shaka.extern.AbrConfiguration.
Parameters:
Name Type Description
config shaka.extern.AbrConfiguration
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disable()

Disables automatic Stream suggestions. After this, the AbrManager may not call switchCallback().
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enable()

Enables automatic Variant choices from the last ones passed to setVariants. After this, the AbrManager may call switchCallback() at any time.
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getBandwidthEstimate() → {number}

Gets an estimate of the current bandwidth in bit/sec. This is used by the Player to generate stats.
Source:
Returns:
Type
number

playbackRateChanged(rate)

Updates manager playback rate.
Parameters:
Name Type Description
rate number
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release()

Request that this object release all internal references.
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segmentDownloaded(deltaTimeMs, numBytes, allowSwitch, requestopt, contextopt)

Notifies the AbrManager that a segment has been downloaded (includes MP4 SIDX data, WebM Cues data, initialization segments, and media segments).
Parameters:
Name Type Attributes Description
deltaTimeMs number The duration, in milliseconds, that the request took to complete.
numBytes number The total number of bytes transferred.
allowSwitch boolean Indicate if the segment is allowed to switch to another stream.
request shaka.extern.Request <optional>
 A reference to the request
context shaka.extern.RequestContext <optional>
 A reference to the request context
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setCmsdManager(cmsdManager)

Set CMSD manager.
Parameters:
Name Type Description
cmsdManager shaka.util.CmsdManager
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setMediaElement(mediaElement)

Set media element.
Parameters:
Name Type Description
mediaElement HTMLMediaElement
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setVariants(variantsnon-null, isLowLatency) → {boolean}

Updates manager's variants collection. Returns true if the variants are updated. Returns false if the variants are equal.
Parameters:
Name Type Description
variants Array<!shaka.extern.Variant>
isLowLatency boolean
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Returns:
Type
boolean

stop()

Stops any background timers and frees any objects held by this instance. This will only be called after a call to init.
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trySuggestStreams()

Notifies the ABR that it is a time to suggest new streams. This is used by the Player when it finishes adding the last partial segment of a fast switching stream.
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Type Definitions

DisableStreamCallback

A callback into the Player that should be called when the AbrManager decides that the currently playing stream should be temporarily restricted. The first argument specifies the type of stream ('audio' or 'video'), and the second argument specifies the duration of the restriction in seconds. The exact behavior of the restriction (e.g. temporarily disabling the stream or otherwise penalizing it) is implementation-defined by the caller.
Type:
  • function(string, number)
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Factory

A factory for creating the abr manager.
Type:
  • function(): !shaka.extern.AbrManager
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SwitchCallback

A callback into the Player that should be called when the AbrManager decides it's time to change to a different variant. The first argument is a variant to switch to. The second argument is an optional boolean. If true, all data will be removed from the buffer, which will result in a buffering event. Unless a third argument is passed. The third argument in an optional number that specifies how much data (in seconds) should be retained when clearing the buffer. This can help achieve a fast switch that doesn't involve a buffering event. A minimum of two video segments should always be kept buffered to avoid temporary hiccups.
Type:
  • function(shaka.extern.Variant, boolean=, number=)
Source: