Class: shaka.media.GapJumpingController

Constructor

new GapJumpingController(videonon-null, timelinenon-null, config, stallDetector, onEvent)

Creates a new GapJumpingController that handles jumping gaps that appear within the content. This will only jump gaps between two buffered ranges, so we should not have to worry about the availability window.
Parameters:
Name Type Description
video HTMLMediaElement
timeline shaka.media.PresentationTimeline
config shaka.extern.StreamingConfiguration
stallDetector shaka.media.StallDetector The stall detector is used to keep the playhead moving while in a playable region. The gap jumping controller takes ownership over the stall detector. If no stall detection logic is desired, |null| may be provided.
onEvent function(!Event) Called when an event is raised to be sent to the application.
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Members

(static, constant) BROWSER_GAP_TOLERANCE

The limit, in seconds, for the gap size that we will assume the browser will handle for us.
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(private, nullable) config_ :shaka.extern.StreamingConfiguration

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(private) didFireLargeGap_ :boolean

Type:
  • boolean
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(private) eventManager_ :shaka.util.EventManager

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(private, nullable) gapJumpTimer_ :shaka.util.Timer

We can't trust |readyState| or 'waiting' events on all platforms. To make up for this, we poll the current time. If we think we are in a gap, jump out of it. See: https://bit.ly/2McuXxm and https://bit.ly/2K5xmJO
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(private) hadSegmentAppended_ :boolean

Type:
  • boolean
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(private, nullable) onEvent_ :?function(!Event)

Type:
  • ?function(!Event)
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(private) prevReadyState_ :number

Type:
  • number
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(private) seekingEventReceived_ :boolean

Type:
  • boolean
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(private) stallDetector_ :shaka.media.StallDetector

The stall detector tries to keep the playhead moving forward. It is managed by the gap-jumping controller to avoid conflicts. On some platforms, the stall detector is not wanted, so it may be null.
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(private, nullable) timeline_ :shaka.media.PresentationTimeline

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(private) video_ :HTMLMediaElement

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Methods

(private) onPollGapJump_()

Called on a recurring timer to check for gaps in the media. This is also called in a 'waiting' event.
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onSeeking()

Called when a seek has started.
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onSegmentAppended()

Called when a segment is appended by StreamingEngine, but not when a clear is pending. This means StreamingEngine will continue buffering forward from what is buffered. So we know about any gaps before the start.
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(export) release()

Request that this object release all internal references.
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