Class BaseAudioContext
- java.lang.Object
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- org.htmlunit.corejs.javascript.ScriptableObject
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- org.htmlunit.javascript.HtmlUnitScriptable
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- org.htmlunit.javascript.host.event.EventTarget
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- org.htmlunit.javascript.host.media.BaseAudioContext
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Cloneable
,org.htmlunit.corejs.javascript.ConstProperties
,org.htmlunit.corejs.javascript.debug.DebuggableObject
,org.htmlunit.corejs.javascript.Scriptable
,org.htmlunit.corejs.javascript.SymbolScriptable
- Direct Known Subclasses:
AudioContext
,OfflineAudioContext
public class BaseAudioContext extends EventTarget
A JavaScript object forBaseAudioContext
.- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description BaseAudioContext()
Creates an instance.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description AudioBuffer
createBuffer()
AudioBufferSourceNode
createBufferSource()
GainNode
createGain()
java.lang.Object
decodeAudioData(org.htmlunit.corejs.javascript.typedarrays.NativeArrayBuffer buffer, org.htmlunit.corejs.javascript.Function success, org.htmlunit.corejs.javascript.Function error)
The decodeAudioData() method of the BaseAudioContext Interface is used to asynchronously decode audio file data contained in an ArrayBuffer.void
jsConstructor()
Creates an instance.-
Methods inherited from class org.htmlunit.javascript.host.event.EventTarget
addEventListener, clearEventListenersContainer, dispatchEvent, executeEventLocally, fireEvent, getEventHandler, getEventListenersContainer, hasEventHandlers, isEventHandlerOnWindow, removeEventListener, setEventHandler
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Methods inherited from class org.htmlunit.javascript.HtmlUnitScriptable
clone, equivalentValues, get, getBrowserVersion, getClassName, getDefaultValue, getDomNodeOrDie, getDomNodeOrNull, getPrototype, getScriptableFor, getStartingScope, getWindow, getWindow, getWithPreemption, has, hasInstance, initParentScope, makeScriptableFor, put, setClassName, setDomNode, setDomNode, setParentScope, setupPromise, setupRejectedPromise
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Methods inherited from class org.htmlunit.corejs.javascript.ScriptableObject
applyDescriptorToAttributeBitset, associateValue, avoidObjectDetection, buildDataDescriptor, callMethod, callMethod, checkPropertyChange, checkPropertyDefinition, defineClass, defineClass, defineClass, defineConst, defineConstProperty, defineFunctionProperties, defineOwnProperties, defineOwnProperty, defineOwnProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, delete, delete, delete, deleteProperty, deleteProperty, deleteProperty, ensureScriptable, ensureScriptableObject, ensureSymbolScriptable, get, get, get, getAllIds, getArrayPrototype, getAssociatedValue, getAttributes, getAttributes, getAttributes, getAttributes, getAttributes, getClassPrototype, getDefaultValue, getExternalArrayData, getExternalArrayLength, getFunctionPrototype, getGeneratorFunctionPrototype, getGetterOrSetter, getGetterOrSetter, getIds, getObjectPrototype, getOwnPropertyDescriptor, getParentScope, getProperty, getProperty, getProperty, getPropertyIds, getPrototype, getTopLevelScope, getTopScopeValue, getTypedProperty, getTypedProperty, getTypeOf, has, has, hasProperty, hasProperty, hasProperty, isAccessorDescriptor, isConst, isDataDescriptor, isEmpty, isExtensible, isFalse, isGenericDescriptor, isGetterOrSetter, isSealed, isTrue, preventExtensions, put, put, putConst, putConstProperty, putProperty, putProperty, putProperty, querySlot, redefineProperty, sameValue, sealObject, setAttributes, setAttributes, setAttributes, setAttributes, setAttributes, setCommonDescriptorProperties, setExternalArrayData, setGetterOrSetter, setPrototype, size
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Method Detail
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jsConstructor
public void jsConstructor()
Creates an instance.- Overrides:
jsConstructor
in classEventTarget
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createBufferSource
public AudioBufferSourceNode createBufferSource()
- Returns:
- a new AudioBufferSourceNode, which can be used to play audio data contained within an AudioBuffer object.
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createBuffer
public AudioBuffer createBuffer()
- Returns:
- new, empty AudioBuffer object, which can then be populated by data, and played via an AudioBufferSourceNode.
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createGain
public GainNode createGain()
- Returns:
- a GainNode, which can be used to control the overall gain (or volume) of the audio graph.
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decodeAudioData
public java.lang.Object decodeAudioData(org.htmlunit.corejs.javascript.typedarrays.NativeArrayBuffer buffer, org.htmlunit.corejs.javascript.Function success, org.htmlunit.corejs.javascript.Function error)
The decodeAudioData() method of the BaseAudioContext Interface is used to asynchronously decode audio file data contained in an ArrayBuffer. In this case the ArrayBuffer is loaded from XMLHttpRequest and FileReader. The decoded AudioBuffer is resampled to the AudioContext's sampling rate, then passed to a callback or promise.- Parameters:
buffer
- An ArrayBuffer containing the audio data to be decoded, usually grabbed from XMLHttpRequest, WindowOrWorkerGlobalScope.fetch() or FileReadersuccess
- A callback function to be invoked when the decoding successfully finishes. The single argument to this callback is an AudioBuffer representing the decodedData (the decoded PCM audio data). Usually you'll want to put the decoded data into an AudioBufferSourceNode, from which it can be played and manipulated how you want.error
- An optional error callback, to be invoked if an error occurs when the audio data is being decoded.- Returns:
- the promise or null
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