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Class: WebAudio

new WebAudio (url)

Web Audio API を使った音声データ。

静的メソッドも多く、ユーティリティとしての利用も多い。

関連クラス: CacheEntry, SoundManager, Html5Audio, RPG.AudioFile

Parameters:

Name Type Description
url String The url of the audio file

Properties:

Name Type Description
url String [read-only] 音声ファイルの URL
volume Number The volume of the audio.
pitch Number The pitch of the audio.
pan Number The pan of the audio.
_context AudioContext  
_masterGainNode GainNode  
_initialized Boolean  
_unlocked Boolean  

Members

(static) _standAlone

Methods

(static) _connectNodes ()

(static) _createContext ()

(static) _createEndTimer ()

(static) _createMasterGainNode ()

(static) _createNodes ()

(static) _detectCodecs ()

(static) _fadeIn (duration)

Parameters:
Name Type Description
duration Number  

(static) _fadeOut (duration)

Parameters:
Name Type Description
duration Number  

(static) _load (url)

Parameters:
Name Type Description
url String  

(static) _onHide ()

(static) _onLoad ()

(static) _onShow ()

(static) _onTouchStart ()

(static) _onVisibilityChange ()

(static) _onXhrLoad (xhr)

Parameters:
Name Type Description
xhr XMLHttpRequest  

(static) _readBigEndian (array, index)

Parameters:
Name Type Description
array Uint8Array  
index Number  

(static) _readFourCharacters (array, index)

Parameters:
Name Type Description
array Uint8Array  
index Number  

(static) _readLittleEndian (array, index)

Parameters:
Name Type Description
array Uint8Array  
index Number  

(static) _readLoopComments (array)

Parameters:
Name Type Description
array Uint8Array  

(static) _readMetaData (array, index, size)

Parameters:
Name Type Description
array Uint8Array  
index Number  
size Number  

(static) _readMp4 (array)

Parameters:
Name Type Description
array Uint8Array  

(static) _readOgg (array)

Parameters:
Name Type Description
array Uint8Array  

(static) _removeEndTimer ()

(static) _removeNodes ()

(static) _setupEventHandlers ()

(static) _shouldMuteOnHide ()

(static) _startPlaying (loop, offset)

Parameters:
Name Type Description
loop Boolean  
offset Number  

(static) _updatePanner ()

(static) canPlayM4a () → {Boolean}

Checks whether the browser can play m4a files.

(static) canPlayOgg () → {Boolean}

Checks whether the browser can play ogg files.

(static) initialize (noAudio) → {Boolean}

Initializes the audio system.

Parameters:
Name Type Description
noAudio Boolean Flag for the no-audio mode

(static) setMasterVolume (value)

Sets the master volume of the all audio.

Parameters:
Name Type Description
value Number Master volume (min: 0, max: 1)

addLoadListener (listner)

Add a callback function that will be called when the audio data is loaded.

Parameters:
Name Type Description
listner function The callback function

addStopListener (listner)

Add a callback function that will be called when the playback is stopped.

Parameters:
Name Type Description
listner function The callback function

clear ()

Clears the audio data.

fadeIn (duration)

Performs the audio fade-in.

Parameters:
Name Type Description
duration Number Fade-in time in seconds

fadeOut (duration)

Performs the audio fade-out.

Parameters:
Name Type Description
duration Number Fade-out time in seconds

initialize ()

オブジェクト生成時の初期化。

isError () → {Boolean}

Checks whether a loading error has occurred.

isPlaying () → {Boolean}

Checks whether the audio is playing.

isReady () → {Boolean}

Checks whether the audio data is ready to play.

play (loop, offset)

Plays the audio.

Parameters:
Name Type Description
loop Boolean Whether the audio data play in a loop
offset Number The start position to play in seconds

seek ()

Gets the seek position of the audio.

stop ()

Stops the audio.

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