DefaultHTTPStreamingSwitchManager

Paket	org.osmf.net.httpstreaming
Klass	public class DefaultHTTPStreamingSwitchManager
Arv	DefaultHTTPStreamingSwitchManager RuleSwitchManagerBase NetStreamSwitchManagerBase EventDispatcher Object

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

Default implementation of SwitchManagerBase

Relaterade API-element

org.osmf.net.abr.MetricBase
org.osmf.net.abr.RuleBase

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	Egenskap		Definieras med
		actualIndex : int [skrivskyddad] The index of the currently downloading quality level	RuleSwitchManagerBase
		autoSwitch : Boolean [åsidosätt]	RuleSwitchManagerBase
		climbFactor : Number A factor to be applied when switching up.	DefaultHTTPStreamingSwitchManager
		constructor : Object En referens till klassobjektet eller konstruktorfunktionen för en given objektinstans.	Object
		currentIndex : uint [åsidosätt] [skrivskyddad]	RuleSwitchManagerBase
		emergencyRules : Vector.<RuleBase> [skrivskyddad] Array of normal rules to be used in the algorithm.	RuleSwitchManagerBase
		maxAllowedIndex : int The highest stream index that the switching manager is allowed to switch to.	NetStreamSwitchManagerBase
		maxDownSwitchLimit : int The maximum difference between the indices of the old and new quality level when switching down.	DefaultHTTPStreamingSwitchManager
		maxReliabilityRecordSize : uint The maximum length of the reliability record (how many switches to remember)	DefaultHTTPStreamingSwitchManager
		maxUpSwitchLimit : int The maximum difference between the indices of the old and new quality level when switching up.	DefaultHTTPStreamingSwitchManager
		metricRepository : MetricRepository [skrivskyddad] The metric repository responsible with providing the metrics	RuleSwitchManagerBase
		minReliability : Number The minimum reliability for a quality level to be used.	DefaultHTTPStreamingSwitchManager
		minReliabilityRecordSize : uint The minimum length of the reliability record below which reliability is not an issue	DefaultHTTPStreamingSwitchManager
		normalRules : Vector.<RuleBase> [skrivskyddad] Array of normal rules to be used in the algorithm.	DefaultHTTPStreamingSwitchManager
		normalRuleWeights : Vector.<Number> The weights of the normal rules (their importance in the algorithm). Valid values must obey the following rules: same number of weights as there are rules all rules must be equal or greater than zero at least one weight must be non-zero	DefaultHTTPStreamingSwitchManager

Skyddade egenskaper

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	Egenskap		Definieras med
		_autoSwitch : Boolean	NetStreamSwitchManagerBase
		_maxAllowedIndex : int	NetStreamSwitchManagerBase

Publika metoder

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	Metod		Definieras med
		DefaultHTTPStreamingSwitchManager(notifier:EventDispatcher, switcher:NetStreamSwitcher, metricRepository:MetricRepository, emergencyRules:Vector.<RuleBase> = null, autoSwitch:Boolean = true, normalRules:Vector.<RuleBase> = null, normalRuleWeights:Vector.<Number> = null, minReliability:Number = 0.85, minReliabilityRecordSize:uint = 5, maxReliabilityRecordSize:uint = 30, climbFactor:Number = 0.9, maxUpSwitchLimit:int = 1, maxDownSwitchLimit:int = 2) Constructor.	DefaultHTTPStreamingSwitchManager
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registrerar ett händelseavlyssnarobjekt för ett EventDispatcher-objekt så att avlyssnaren får meddelanden om händelser.	EventDispatcher
		dispatchEvent(event:Event):Boolean Skickar en händelse till händelseflödet.	EventDispatcher
		getCurrentReliability(index:uint):Number The current reliability of the specified index.	DefaultHTTPStreamingSwitchManager
		getNewEmergencyIndex(maxBitrate:Number):uint [åsidosätt] Returns an index that satisfies the maxBitrate constraint	DefaultHTTPStreamingSwitchManager
		getNewIndex():uint [åsidosätt] Computes the necessary rules and metrics and determines the index to switch to.	DefaultHTTPStreamingSwitchManager
		hasEventListener(type:String):Boolean Kontrollerar om EventDispatcher-objektet har några avlyssnare registrerade för en viss typ av händelse.	EventDispatcher
		hasOwnProperty(name:String):Boolean Anger om det finns en egenskap angiven för ett objekt.	Object
		isPrototypeOf(theClass:Object):Boolean Anger om en instans av klassen Object finns i prototypkedjan för objektet som anges som parameter.	Object
		propertyIsEnumerable(name:String):Boolean Anger om den angivna egenskapen finns och är uppräkningsbar.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Tar bort en avlyssnare från EventDispatcher-objektet.	EventDispatcher
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Anger tillgänglighet för en dynamisk egenskap för slingåtgärder.	Object
		switchTo(index:int):void [åsidosätt]	RuleSwitchManagerBase
		toLocaleString():String Returnerar det här objektets strängrepresentation, formaterad i enlighet med språkspecifika konventioner.	Object
		toString():String Returnerar det angivna objektets strängbeteckning.	Object
		valueOf():Object Returnerar det angivna objektets primitiva värde.	Object
		willTrigger(type:String):Boolean Kontrollerar om en händelseavlyssnare är registrerad för det här EventDispatcher-objektet eller något av dess överordnade objekt för den angivna händelsetypen.	EventDispatcher

Skyddade metoder

	Metod		Definieras med
		getMaxIndex(maxBitrate:Number, emergencyFlag:Boolean = false):uint Determines maximum available index whose declared bitrate is smaller than maxBitrate.	DefaultHTTPStreamingSwitchManager
		isReliable(index:uint):Boolean Determines whether an index is reliable. This is achieved by comparing the index's reliability with the minimumReliability	DefaultHTTPStreamingSwitchManager
		setNormalRules(value:Vector.<RuleBase>):void Array of normal rules to be used in the algorithm.	DefaultHTTPStreamingSwitchManager

Händelser

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	Händelse		Sammanfattning	Definieras med
		activate	[utsändningshändelse] Skickas när Flash Player eller AIR får operativsystemfokus och blir aktivt.	EventDispatcher
		deactivate	[utsändningshändelse] Skickas när Flash Player eller AIR förlorar operativsystemfokus och blir inaktivt.	EventDispatcher

Egenskapsdetaljer

climbFactor

egenskap

climbFactor:Number

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

A factor to be applied when switching up. For example: currently playing 300kbps; new ideal bitrate = 1000kbps This means that: max bitrate = 300 + climbFactor x (1000 - 300)

It must be equal or greater than 0

Implementering
public function get climbFactor():Number
public function set climbFactor(value:Number):void

Utlöser

ArgumentError — If it is set to a negative value

maxDownSwitchLimit

egenskap

maxDownSwitchLimit:int

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

The maximum difference between the indices of the old and new quality level when switching down. Set this to a -1 to disable the constraint.

This works in conjunction with the reliability constraint. If no reliable stream is available inside the maxDownSwitchLimit, no switch will be performed. The maxDownSwitchLimit constraint does not apply to emergency switches.

Implementering
public function get maxDownSwitchLimit():int
public function set maxDownSwitchLimit(value:int):void

maxReliabilityRecordSize

egenskap

maxReliabilityRecordSize:uint

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

The maximum length of the reliability record (how many switches to remember)

Implementering
public function get maxReliabilityRecordSize():uint
public function set maxReliabilityRecordSize(value:uint):void

maxUpSwitchLimit

egenskap

maxUpSwitchLimit:int

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

The maximum difference between the indices of the old and new quality level when switching up. Set this to a -1 to disable the constraint.

This works in conjunction with the reliability constraint. If no reliable stream is available inside the maxUpSwitchLlimit, no switch will be performed.

Implementering
public function get maxUpSwitchLimit():int
public function set maxUpSwitchLimit(value:int):void

minReliability

egenskap

minReliability:Number

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

The minimum reliability for a quality level to be used. This value must be a number in the [0-1] interval (inclusive)

Implementering
public function get minReliability():Number
public function set minReliability(value:Number):void

Utlöser

ArgumentError — If it is set to an invalid value

minReliabilityRecordSize

egenskap

minReliabilityRecordSize:uint

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

The minimum length of the reliability record below which reliability is not an issue

Implementering
public function get minReliabilityRecordSize():uint
public function set minReliabilityRecordSize(value:uint):void

normalRules

egenskap

normalRules:Vector.<RuleBase> [skrivskyddad]

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

Array of normal rules to be used in the algorithm. A normal rule can recommend both lower and higher bitrates than the current one

Implementering
public function get normalRules():Vector.<RuleBase>

normalRuleWeights

egenskap

normalRuleWeights:Vector.<Number>

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

The weights of the normal rules (their importance in the algorithm). Valid values must obey the following rules:

same number of weights as there are rules
all rules must be equal or greater than zero
at least one weight must be non-zero

Implementering
public function get normalRuleWeights():Vector.<Number>
public function set normalRuleWeights(value:Vector.<Number>):void

Utlöser

ArgumentError — If the weights are not valid, by breaking at least one of the above criteria

Konstruktordetaljer

()

Konstruktor

public function DefaultHTTPStreamingSwitchManager(notifier:EventDispatcher, switcher:NetStreamSwitcher, metricRepository:MetricRepository, emergencyRules:Vector.<RuleBase> = null, autoSwitch:Boolean = true, normalRules:Vector.<RuleBase> = null, normalRuleWeights:Vector.<Number> = null, minReliability:Number = 0.85, minReliabilityRecordSize:uint = 5, maxReliabilityRecordSize:uint = 30, climbFactor:Number = 0.9, maxUpSwitchLimit:int = 1, maxDownSwitchLimit:int = 2)

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

Constructor.

Parametrar

	`notifier:EventDispatcher` — An object that dispatches the HTTPStreamingEvent.RUN_ALGORITHM event

	`switcher:NetStreamSwitcher` — The NetStreamSwitcher to use for switching

	`metricRepository:MetricRepository` — The repository responsible with providing metrics

	`emergencyRules:Vector.<RuleBase>` (default = `null`) — Array of rules to be used in the algorithm. An emergency rule can only recommend lower bitrates than the current one.

	`autoSwitch:Boolean` (default = `true`) — Flag deciding whether autoSwitch should be enabled

	`normalRules:Vector.<RuleBase>` (default = `null`) — Array of normal rules to be used in the algorithm. A normal rule can recommend both lower and higher bitrates than the current one.

	`normalRuleWeights:Vector.<Number>` (default = `null`) — The weights of the normal rules (their importance in the algorithm)

	`minReliability:Number` (default = `0.85`) — The minimum reliability for a quality level to be used

	`minReliabilityRecordSize:uint` (default = `5`) — The maximum length of the reliability record (how many switches to remember)

	`maxReliabilityRecordSize:uint` (default = `30`) — The minimum length of the reliability record below which reliability is not an issue

	`climbFactor:Number` (default = `0.9`) — A factor to be applied when switching up. For example: currently playing 300kbps; new ideal bitrate = 1000kbps This means that: max bitrate = 300 + climbFactor x (1000 - 300)

	`maxUpSwitchLimit:int` (default = `1`) — The maximum difference between the indices of the old and new quality level when switching up. Set this to -1 to disable the constraint. This works in conjunction with the reliability constraint. If no reliable stream is available inside the maxUpSwitchLimit, no switch will be performed.

	`maxDownSwitchLimit:int` (default = `2`) — The maximum difference between the indices of the old and new quality level when switching down. Set this to -1 value to disable the constraint. This works in conjunction with the reliability constraint. If no reliable stream is available inside the maxDownSwitchLimit, no switch will be performed. The maxDownSwitchLimit constraint does not apply to emergency switches.

Metoddetaljer

getCurrentReliability

()

metod

public function getCurrentReliability(index:uint):Number

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

The current reliability of the specified index.

Parametrar

index:uint

Returnerar

Number — A number between 0 (most unreliable) and 1 (most reliable)

getMaxIndex

()

metod

protected function getMaxIndex(maxBitrate:Number, emergencyFlag:Boolean = false):uint

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

Determines maximum available index whose declared bitrate is smaller than maxBitrate. Only reliable indices (indices that pass the isReliable() function) are taken into consideration.

Parametrar

	`maxBitrate:Number` — The maximum bitrate to which the index must comply

	`emergencyFlag:Boolean` (default = `false`)

Returnerar

uint — The index satisfying the aforementioned condition

Relaterade API-element

isReliable()

getNewEmergencyIndex

()

metod

override public function getNewEmergencyIndex(maxBitrate:Number):uint

Returns an index that satisfies the maxBitrate constraint

Parametrar

maxBitrate:Number

Returnerar

uint

getNewIndex

()

metod

override public function getNewIndex():uint

Computes the necessary rules and metrics and determines the index to switch to. The index must be a valid one (it can be higher than maxAllowedIndex, but it should be a real index that is available)

Returnerar

uint

isReliable

()

metod

protected function isReliable(index:uint):Boolean

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

Determines whether an index is reliable. This is achieved by comparing the index's reliability with the minimumReliability

Parametrar

index:uint

Returnerar

Boolean

Relaterade API-element

minimumReliability
getCurrentReliability()

setNormalRules

()

metod

protected function setNormalRules(value:Vector.<RuleBase>):void

Språkversion:

ActionScript 3.0

Produktversion:

OSMF 2.0

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

Array of normal rules to be used in the algorithm. A normal rule can recommend both lower and higher bitrates than the current one.

Parametrar

value:Vector.<RuleBase>

Relaterade API-element

normalRules

Juridiska meddelanden | Onlinesekretesspolicy

DefaultHTTPStreamingSwitchManager - AS3 OSMF

Klasser x

climbFactor

maxDownSwitchLimit

maxReliabilityRecordSize

maxUpSwitchLimit

minReliability

minReliabilityRecordSize

normalRules

normalRuleWeights