Pacote | org.osmf.net.httpstreaming |
Classe | public class DefaultHTTPStreamingSwitchManager |
Herança | DefaultHTTPStreamingSwitchManager RuleSwitchManagerBase NetStreamSwitchManagerBase EventDispatcher Object |
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de runtime: | Flash Player 10, AIR 1.5 |
Elementos da API relacionados
org.osmf.net.abr.RuleBase
Propriedade | Definido por | ||
---|---|---|---|
actualIndex : int [somente leitura]
The index of the currently downloading quality level
| RuleSwitchManagerBase | ||
autoSwitch : Boolean [substituir] | RuleSwitchManagerBase | ||
climbFactor : Number
A factor to be applied when switching up. | DefaultHTTPStreamingSwitchManager | ||
constructor : Object
Uma referência ao objeto de classe ou à função de construtor de uma determinada ocorrência de objeto. | Object | ||
currentIndex : uint [substituir] [somente leitura] | RuleSwitchManagerBase | ||
emergencyRules : Vector.<RuleBase> [somente leitura]
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 [somente leitura]
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> [somente leitura]
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 |
Método | Definido por | ||
---|---|---|---|
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 um objeto de ouvinte de evento em um objeto EventDispatcher, de forma que o ouvinte receba a notificação de um evento. | EventDispatcher | ||
Envia um evento para o fluxo de eventos. | EventDispatcher | ||
The current reliability of the specified index. | DefaultHTTPStreamingSwitchManager | ||
[substituir]
Returns an index that satisfies the maxBitrate constraint
| DefaultHTTPStreamingSwitchManager | ||
[substituir]
Computes the necessary rules and metrics and determines the index to switch to. | DefaultHTTPStreamingSwitchManager | ||
Verifica se o objeto EventDispatcher tem ouvintes registrados para um tipo específico de evento. | EventDispatcher | ||
Indica se um objeto tem uma propriedade especificada definida. | Object | ||
Indica se uma ocorrência da classe Object está na cadeia de protótipos do objeto especificado como o parâmetro. | Object | ||
Indica se a propriedade especificada existe e é enumerável. | Object | ||
Remove um ouvinte do objeto EventDispatcher. | EventDispatcher | ||
Define a disponibilidade de uma propriedade dinâmica para operações de repetição. | Object | ||
[substituir] | RuleSwitchManagerBase | ||
Retorna a representação da string deste objeto, formatado segundo as convenções específicas para a localidade. | Object | ||
Retorna a representação de string do objeto especificado. | Object | ||
Retorna o valor primitivo do objeto especificado. | Object | ||
Verifica se um ouvinte de evento está registrado nesse objeto EventDispatcher ou em qualquer um de seus ancestrais para o tipo de evento especificado. | EventDispatcher |
Método | Definido por | ||
---|---|---|---|
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 |
climbFactor | propriedade |
climbFactor:Number
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de 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
Implementação
public function get climbFactor():Number
public function set climbFactor(value:Number):void
Lança
ArgumentError — If it is set to a negative value
|
maxDownSwitchLimit | propriedade |
maxDownSwitchLimit:int
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de 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.
Implementação
public function get maxDownSwitchLimit():int
public function set maxDownSwitchLimit(value:int):void
maxReliabilityRecordSize | propriedade |
maxReliabilityRecordSize:uint
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de runtime: | Flash Player 10, AIR 1.5 |
The maximum length of the reliability record (how many switches to remember)
Implementação
public function get maxReliabilityRecordSize():uint
public function set maxReliabilityRecordSize(value:uint):void
maxUpSwitchLimit | propriedade |
maxUpSwitchLimit:int
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de 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.
Implementação
public function get maxUpSwitchLimit():int
public function set maxUpSwitchLimit(value:int):void
minReliability | propriedade |
minReliability:Number
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de 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)
Implementação
public function get minReliability():Number
public function set minReliability(value:Number):void
Lança
ArgumentError — If it is set to an invalid value
|
minReliabilityRecordSize | propriedade |
minReliabilityRecordSize:uint
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de runtime: | Flash Player 10, AIR 1.5 |
The minimum length of the reliability record below which reliability is not an issue
Implementação
public function get minReliabilityRecordSize():uint
public function set minReliabilityRecordSize(value:uint):void
normalRules | propriedade |
normalRules:Vector.<RuleBase>
[somente leitura] Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de 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
Implementação
public function get normalRules():Vector.<RuleBase>
normalRuleWeights | propriedade |
normalRuleWeights:Vector.<Number>
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de 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
Implementação
public function get normalRuleWeights():Vector.<Number>
public function set normalRuleWeights(value:Vector.<Number>):void
Lança
ArgumentError — If the weights are not valid,
by breaking at least one of the above criteria
|
DefaultHTTPStreamingSwitchManager | () | Construtor |
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)
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de runtime: | Flash Player 10, AIR 1.5 |
Constructor.
Parâmetrosnotifier: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.
|
getCurrentReliability | () | método |
public function getCurrentReliability(index:uint):Number
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de runtime: | Flash Player 10, AIR 1.5 |
The current reliability of the specified index.
Parâmetros
index:uint |
Number — A number between 0 (most unreliable) and 1 (most reliable)
|
getMaxIndex | () | método |
protected function getMaxIndex(maxBitrate:Number, emergencyFlag:Boolean = false):uint
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de 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.
Parâmetros
maxBitrate:Number — The maximum bitrate to which the index must comply
| |
emergencyFlag:Boolean (default = false )
|
uint — The index satisfying the aforementioned condition
|
Elementos da API relacionados
getNewEmergencyIndex | () | método |
getNewIndex | () | método |
isReliable | () | método |
protected function isReliable(index:uint):Boolean
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de 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
Parâmetros
index:uint |
Boolean |
Elementos da API relacionados
setNormalRules | () | método |
protected function setNormalRules(value:Vector.<RuleBase>):void
Versão da linguagem: | ActionScript 3.0 |
Versão de produto: | OSMF 2.0 |
Versões de 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.
Parâmetros
value:Vector.<RuleBase> |
Elementos da API relacionados
Wed Jun 13 2018, 11:10 AM Z