Class: shaka.abr.SlidingPercentileBandwidthEstimator

This class tracks bandwidth samples and estimates available bandwidth. Based on the minimum of two exponentially-weighted moving averages with different half-lives.

Constructor

new SlidingPercentileBandwidthEstimator()

This class tracks bandwidth samples and estimates available bandwidth. Based on the minimum of two exponentially-weighted moving averages with different half-lives.

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Members

BYTES_TRANSFERRED_FOR_ESTIMATE :number

Type:
  • number
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DEFAULT_SLIDING_WINDOW_MAX_WEIGHT :number

Type:
  • number
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ELAPSED_MILLIS_FOR_ESTIMATE :number

Type:
  • number
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bandwidthEstimate_

* @private {number}
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slidingPercentile_ :shaka.abr.SlidingPercentile

Type:
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totalBytesTransferred_ :number

Number of bytes sampled.
Type:
  • number
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totalTimeElapsed_ :number

Number of bytes sampled.
Type:
  • number
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Methods

getBandwidthEstimate(defaultEstimate) → {number}

Gets the current bandwidth estimate.
Parameters:
Name Type Description
defaultEstimate number
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Returns:
The bandwidth estimate in bits per second.
Type
number

hasGoodEstimate() → {boolean}

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Returns:
True if there is enough data to produce a meaningful estimate.
Type
boolean

sample(durationMs, numBytes)

Takes a bandwidth sample.
Parameters:
Name Type Description
durationMs number The amount of time, in milliseconds, for a particular request.
numBytes number The total number of bytes transferred in that request.
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