MetricBase

套件	org.osmf.net.metrics
類別	public class MetricBase
繼承	MetricBase Object
子類別	ActualBitrateMetric, AvailableQualityLevelsMetric, BandwidthMetric, BufferFragmentsMetric, BufferLengthMetric, BufferOccupationRatioMetric, CurrentStatusMetric, DroppedFPSMetric, EmptyBufferMetric, FPSMetric, FragmentCountMetric, RecentSwitchMetric

語言版本:

ActionScript 3.0

產品版本:

OSMF 2.0

執行階段版本:

Flash Player 10, AIR 1.5

MetricBase is a base class for metrics used for Adaptive Bitrate. A metric's value is computed based on QoSInfoHistory. A metric is identified by its type.

The base class handles the caching of the computed value. The subclasses should only implement the actual computation.

All subclasses should have qosInfoHistory as the first parameter in the constructor.

All subclasses must set the _type in the constructor.

相關 API 元素

org.osmf.net.abr.MetricType
org.osmf.net.abr.MetricValue
org.osmf.net.abr.QoSInfoHistory

公用屬性

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	屬性		定義自
		constructor : Object 類別物件的參照或是特定物件實體的建構函數。	Object
		type : String [唯讀] The type of the metric	MetricBase
		value : MetricValue [唯讀] The value of this metric If the value has already been computed for the most recent QoSInfo, return the cached result.	MetricBase

保護屬性

	屬性		定義自
		qosInfoHistory : QoSInfoHistory [唯讀] The QoSInfoHistory object used to compute the metric.	MetricBase

公用方法

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	方法		定義自
		MetricBase(qosInfoHistory:QoSInfoHistory, type:String) Constructor.	MetricBase
		getValue():MetricValue The value of this metric If the value has already been computed for the most recent QoSInfo, return the cached result. This method is internal so it can be overriden by metric mockers, for testing purposes	MetricBase
		hasOwnProperty(name:String):Boolean 指出物件是否有已定義的指定屬性。	Object
		isPrototypeOf(theClass:Object):Boolean 指出 Object 類別的實體是否位於指定為參數的物件原型鏈中。	Object
		propertyIsEnumerable(name:String):Boolean 指出指定的屬性是否存在，以及是否可列舉。	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void 為迴圈作業設定動態屬性的可用性。	Object
		toLocaleString():String 傳回代表此物件的字串，根據地區特定慣例進行格式化。	Object
		toString():String 會傳回指定之物件的字串形式。	Object
		valueOf():Object 會傳回指定之物件的基本值。	Object

保護方法

	方法		定義自
		getValueForced():MetricValue Computes the value of this metric Subclasses must override to provide a specific implementation.	MetricBase

屬性詳細資訊

建構函式詳細資料

()

建構函式

public function MetricBase(qosInfoHistory:QoSInfoHistory, type:String)

Constructor.

參數

	`qosInfoHistory:QoSInfoHistory` — The QoSInfoHistory to be used for computing the metric

	`type:String` — The type of the metric

方法詳細資訊

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MetricBase - AS3 OSMF

套件x

語言元素

附錄

套件 org.osmf.net.metrics

qosInfoHistory

type

value

MetricBase

getValue

getValueForced