| Pacchetto | org.osmf.net.httpstreaming |
| Classe | public class DefaultHTTPStreamingSwitchManager |
| Ereditarietà | DefaultHTTPStreamingSwitchManager  RuleSwitchManagerBase NetStreamSwitchManagerBase EventDispatcher Object |
| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Elementi API correlati
org.osmf.net.abr.MetricBase
org.osmf.net.abr.RuleBase
org.osmf.net.abr.RuleBase
Proprietà pubbliche
Nascondi proprietà pubbliche ereditate
Mostra proprietà pubbliche ereditate| Proprietà | Definito da | ||
|---|---|---|---|
 | actualIndex : int [sola lettura]
The index of the currently downloading quality level
| RuleSwitchManagerBase | |
| autoSwitch : Boolean [override] | RuleSwitchManagerBase | |
| climbFactor : Number
A factor to be applied when switching up. | DefaultHTTPStreamingSwitchManager | ||
| constructor : Object
Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto. | Object | |
| currentIndex : uint [override] [sola lettura] | RuleSwitchManagerBase | |
| emergencyRules : Vector.<RuleBase> [sola lettura]
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 [sola lettura]
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> [sola lettura]
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 | ||
Proprietà protette
Metodi pubblici
| Metodo | Definito da | ||
|---|---|---|---|
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
Registra un oggetto listener di eventi con un oggetto EventDispatcher, in modo che il listener riceva la notifica di un evento. | EventDispatcher | |
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Invia un evento nel flusso di eventi. | EventDispatcher | |
The current reliability of the specified index. | DefaultHTTPStreamingSwitchManager | ||
[override]
Returns an index that satisfies the maxBitrate constraint
| DefaultHTTPStreamingSwitchManager | ||
[override]
Computes the necessary rules and metrics and determines the index to switch to. | DefaultHTTPStreamingSwitchManager | ||
|
Verifica se per l'oggetto EventDispatcher sono presenti listener registrati per un tipo specifico di evento. | EventDispatcher | |
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Indica se per un oggetto è definita una proprietà specifica. | Object | |
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Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro. | Object | |
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Indica se la proprietà specificata esiste ed è enumerabile. | Object | |
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Rimuove un listener dall'oggetto EventDispatcher. | EventDispatcher | |
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Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche. | Object | |
| [override] | RuleSwitchManagerBase | |
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Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate. | Object | |
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Restituisce la rappresentazione in formato stringa dell'oggetto specificato. | Object | |
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Restituisce il valore di base dell'oggetto specificato. | Object | |
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Verifica se un listener di eventi è registrato con questo oggetto EventDispatcher o qualsiasi suo antenato per il tipo di evento specificato. | EventDispatcher | |
Metodi protetti
| Metodo | Definito da | ||
|---|---|---|---|
Determines maximum available index whose declared bitrate is smaller than maxBitrate. | DefaultHTTPStreamingSwitchManager | ||
Determines whether an index is reliable.
This is achieved by comparing the index's reliability with the minimumReliability
| DefaultHTTPStreamingSwitchManager | ||
Array of normal rules to be used in the algorithm. | DefaultHTTPStreamingSwitchManager | ||
Eventi
Descrizione delle proprietà
climbFactor | proprietà |
climbFactor:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | 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
Implementazione
public function get climbFactor():Number public function set climbFactor(value:Number):voidGenera
ArgumentError — If it is set to a negative value
|
maxDownSwitchLimit | proprietà |
maxDownSwitchLimit:int| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | 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.
Implementazione
public function get maxDownSwitchLimit():int public function set maxDownSwitchLimit(value:int):voidmaxReliabilityRecordSize | proprietà |
maxReliabilityRecordSize:uint| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The maximum length of the reliability record (how many switches to remember)
Implementazione
public function get maxReliabilityRecordSize():uint public function set maxReliabilityRecordSize(value:uint):voidmaxUpSwitchLimit | proprietà |
maxUpSwitchLimit:int| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | 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.
Implementazione
public function get maxUpSwitchLimit():int public function set maxUpSwitchLimit(value:int):voidminReliability | proprietà |
minReliability:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | 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)
Implementazione
public function get minReliability():Number public function set minReliability(value:Number):voidGenera
ArgumentError — If it is set to an invalid value
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minReliabilityRecordSize | proprietà |
minReliabilityRecordSize:uint| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The minimum length of the reliability record below which reliability is not an issue
Implementazione
public function get minReliabilityRecordSize():uint public function set minReliabilityRecordSize(value:uint):voidnormalRules | proprietà |
normalRules:Vector.<RuleBase> [sola lettura] | Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | 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
Implementazione
public function get normalRules():Vector.<RuleBase>normalRuleWeights | proprietà |
normalRuleWeights:Vector.<Number>| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | 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
Implementazione
public function get normalRuleWeights():Vector.<Number> public function set normalRuleWeights(value:Vector.<Number>):voidGenera
ArgumentError — If the weights are not valid,
by breaking at least one of the above criteria
|
Descrizione della funzione di costruzione
DefaultHTTPStreamingSwitchManager | () | Funzione di costruzione |
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)| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Constructor.
Parametrinotifier: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) | |
autoSwitch:Boolean (default = true) | |
normalRules:Vector.<RuleBase> (default = null) | |
normalRuleWeights:Vector.<Number> (default = null) | |
minReliability:Number (default = 0.85) | |
minReliabilityRecordSize:uint (default = 5) | |
maxReliabilityRecordSize:uint (default = 30) | |
climbFactor:Number (default = 0.9) | |
maxUpSwitchLimit:int (default = 1) | |
maxDownSwitchLimit:int (default = 2) |
Descrizione dei metodi
getCurrentReliability | () | metodo |
public function getCurrentReliability(index:uint):Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The current reliability of the specified index.
Parametri
index:uint |
Number — A number between 0 (most unreliable) and 1 (most reliable)
|
getMaxIndex | () | metodo |
protected function getMaxIndex(maxBitrate:Number, emergencyFlag:Boolean = false):uint| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | 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.
Parametri
maxBitrate:Number — The maximum bitrate to which the index must comply
| |
emergencyFlag:Boolean (default = false) |
uint — The index satisfying the aforementioned condition
|
Elementi API correlati
getNewEmergencyIndex | () | metodo |
getNewIndex | () | metodo |
isReliable | () | metodo |
protected function isReliable(index:uint):Boolean| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Determines whether an index is reliable. This is achieved by comparing the index's reliability with the minimumReliability
Parametri
index:uint |
Boolean |
Elementi API correlati
setNormalRules | () | metodo |
protected function setNormalRules(value:Vector.<RuleBase>):void| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | OSMF 2.0 |
| Versioni runtime: | 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.
Parametri
value:Vector.<RuleBase> |
Elementi API correlati
Tue Jun 12 2018, 02:44 PM Z