# Class: CB_AudioFile

## CB_AudioFile

Class to manage an audio file. Internally, it uses one audio API object which belongs to the audio API being used (when the audio API is changed, it keeps the old audio API objects just in case they are needed in the future when the audio API is changed again). Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

#### new CB_AudioFile(filePath [, audioId] [, options] [, audioAPI] [, callbackOk] [, callbackError]) → {CB_AudioFile}

  The constructor is recommended to be called through a user-driven event (as onClick, onTouch, etc.) if the "autoPlay" option is set to true, as some clients may need this at least the first time in order to be able to play the audio.

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `filePath` | string |  |  | The path of the audio file or a data URI. NOTE: Only some clients with some audio APIs will support data URIs.
  `audioId` | string | <optional> | 'CB_AudioFile_' + CB_AudioFile._idUnique++ | Desired identifier for the audio object (can be a different element depending on the audio API used). If not provided, an automatic unique ID will be calculated. Note that it is not case sensitive and it should be unique for each object.
  `options` | CB_AudioFile.OPTIONS | <optional> | `CB_AudioFile#DEFAULT_OPTIONS` | Object with the desired options.
  `audioAPI` | string | <optional> | CB_AudioDetector.getPreferredAPI(undefined, false, null) || CB_AudioDetector.getPreferredAPI(undefined, true, null) | The desired audio API to be used. If not provided, it will try to calculate the best one for the current client by calling the `CB_AudioDetector.getPreferredAPI` function internally. Audio API support will depend on the current client being used. All possible ones are defined in `CB_Configuration.CrossBase.CB_AudioFileCache_PREFERRED_AUDIO_APIS`. For example: "WAAPI" (HTML5 Web Audio API), "SM2" (SoundManager 2), "ACMP" (Apache Cordova Media Plugin) or "AAPI" (HTML5 Audio API).
  `callbackOk` | function | <optional> |  | Function with no parameters to be called when the audio has been loaded successfully, being "this" the `CB_AudioFile` object itself.
  `callbackError` | function | <optional> |  | Function to be called if the audio has not been loaded successfully. The first and unique parameter will be a string describing the error found (if it could be determined), being "this" the `CB_AudioFile` object itself.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 24
  To Do:
    - Do not allow to create one object with an "id" which has already been used (unless the value is undefined, null...). Note that the "id" is not case sensitive and it should be unique for each object.
    - Send the `CB_AudioFile` object itself as a parameter when calling both "callbackOk" and "callbackError".
    - Think about allowing to define 'useXHR' and 'useCache' options (used by `CB_AudioFile_API.WAAPI` objects).
    - Method getCopy and static method filterProperties (similar to the ones from `CB_GraphicSprites` and `CB_GraphicSpritesScene`).

  ##### Returns:

  Returns a new `CB_AudioFile` object.

  Type
    CB_AudioFile

### Members

#### <constant> DEFAULT_OPTIONS :CB_AudioFile.OPTIONS

  Keeps the default options when an object is created. Format: { autoLoad: boolean, autoPlay: boolean, loop: boolean, volume: number }.

  ##### Type:

  - CB_AudioFile.OPTIONS
  Default Value:
    - { autoLoad: true, autoPlay: false, loop: false, volume: `CB_AudioFile.prototype.DEFAULT_VOLUME` }
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 44

#### <constant> DEFAULT_VOLUME :number

  Keeps the default volume. If the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_DEFAULT` property is true, this will keep the result of calling the `CB_Speaker.getVolume` function. Otherwise, it will use the value of the `CB_Configuration.CrossBase.CB_Speaker_DEFAULT_VOLUME` variable.

  ##### Type:

  - number
  Default Value:
    - CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_DEFAULT ? CB_Speaker.getVolume() : CB_Configuration.CrossBase.CB_Speaker_DEFAULT_VOLUME
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 36

#### <readonly> audioAPI :string

  Defines the Audio API used for this audio file. Audio API support will depend on the current client being used. All possible ones are defined in `CB_Configuration.CrossBase.CB_AudioFileCache_PREFERRED_AUDIO_APIS`. For example: "WAAPI" (HTML5 Web Audio API), "SM2" (SoundManager 2), "ACMP" (Apache Cordova Media Plugin) or "AAPI" (HTML5 Audio API).

  ##### Type:

  - string
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 91

#### audioFileObject :CB_AudioFile_API.WAAPI|CB_AudioFile_API.SM2|CB_AudioFile_API.ACMP|CB_AudioFile_API.AAPI|Object

  It will store the current audio file object for the current audio API. The `CB_AudioFile#load` method will set the value of this property only after the audio file object (stored in its value) is loaded properly. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API). When no audio API object is being set, it will contain a fake object with same methods and properties (defined in `CB_AudioFile._audioFileObject_prototype`). Recommended for internal usage only.

  ##### Type:

  - CB_AudioFile_API.WAAPI | CB_AudioFile_API.SM2 | CB_AudioFile_API.ACMP | CB_AudioFile_API.AAPI | Object
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 162

#### audioFileObjectLast :CB_AudioFile_API.WAAPI|CB_AudioFile_API.SM2|CB_AudioFile_API.ACMP|CB_AudioFile_API.AAPI|Object

  Stores the last audio file object created or reused, for the current API being used. The `CB_AudioFile#load` method will set the value of this property before knowing whether the audio file object (stored in its value) will be loaded properly or not. Used by the `CB_AudioFile#load` and `CB_AudioFile#getProgress` methods. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API). When no audio API object is being set, it will contain a fake object with same methods and properties (defined in `CB_AudioFile._audioFileObject_prototype`). Recommended for internal usage only.

  ##### Type:

  - CB_AudioFile_API.WAAPI | CB_AudioFile_API.SM2 | CB_AudioFile_API.ACMP | CB_AudioFile_API.AAPI | Object
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 170

#### audioFileObjects :Object

  It will store the created audio file objects for the different audio APIs (for optimization purposes, to avoid creating more than one per API). Being each index the name of the audio API ("WAAPI", "AAPI", "SM2" or "ACMP"), their value will be an object which can be `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API). Recommended for internal usage only.

  ##### Type:

  - Object
  Default Value:
    - {}
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 153

#### <readonly> filePath :string

  Stores the path of the audio file or the data URI. NOTE: Only some clients with some audio APIs will support data URIs.

  ##### Type:

  - string
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 82

#### <readonly> id :string

  Stores the identifier for the audio file.

  ##### Type:

  - string
  Default Value:
    - 'CB_AudioFile_' + CB_AudioFile._idUnique++
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 73

#### <readonly> loop :boolean

  Defines whether the file loops by default when the audio is played or not. Its value will be modified automatically whenever the `CB_AudioFile#play` method is called, getting the value from the "loop" parameter (but only if contains a boolean).

  ##### Type:

  - boolean
  Default Value:
    - `CB_AudioFile.prototype.DEFAULT_OPTIONS`.loop
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 55

#### <readonly> volume :number

  Stores the volume of this audio. Accepted values go from 0 to MAX_VOLUME, where MAX_VOLUME is 100 if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is false or otherwise MAX_VOLUME is the returning value of the `CB_Speaker.getVolume` function.

  ##### Type:

  - number
  Default Value:
    - `CB_AudioFile.prototype.DEFAULT_OPTIONS`.volume
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 64

#### <static, constant> ABORTED :integer

  Status value for an audio file which has been aborted. This will happen when the audio file has been destroyed with the `CB_AudioFile#destructor` method. Can be used to compare the value returned by the `CB_AudioFile#getStatus` method. Recommended for internal usage only.

  ##### Type:

  - integer
  Default Value:
    - 6
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 254

#### <static, constant> CHECKING :integer

  Status value for an audio file which is being checked currently. Can be used to compare the value returned by the `CB_AudioFile#getStatus` method. Recommended for internal usage only.

  ##### Type:

  - integer
  Default Value:
    - 3
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 230

#### <static, constant> FAILED :integer

  Status value for an audio file which failed to be loaded or failed for any other reason. Can be used to compare the value returned by the `CB_AudioFile#getStatus` method. Recommended for internal usage only.

  ##### Type:

  - integer
  Default Value:
    - 5
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 246

#### <static, constant> LOADED :integer

  Status value for an audio file which has been loaded. Can be used to compare the value returned by the `CB_AudioFile#getStatus` method. Recommended for internal usage only.

  ##### Type:

  - integer
  Default Value:
    - 4
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 238

#### <static, constant> LOADING :integer

  Status value for an audio file which is loading. Can be used to compare the value returned by the `CB_AudioFile#getStatus` method. Recommended for internal usage only.

  ##### Type:

  - integer
  Default Value:
    - 1
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 214

#### <static, constant> UNCHECKED :integer

  Status value for an audio file which has been not checked yet. Can be used to compare the value returned by the `CB_AudioFile#getStatus` method. Recommended for internal usage only.

  ##### Type:

  - integer
  Default Value:
    - 2
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 222

#### <static, constant> UNLOADED :integer

  Status value for an audio file which is unloaded. Can be used to compare the value returned by the `CB_AudioFile#getStatus` method. Recommended for internal usage only.

  ##### Type:

  - integer
  Default Value:
    - 0
  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 206

### Methods

#### checkPlaying( [callbackOk] [, callbackError] [, ignoreStatus] [, ignoreQueue] [, useCache]) → {boolean}

  Checks whether the audio can be played or not. Recommended to be called through a user-driven event (as onClick, onTouch, etc.), as some clients may need this at least the first time in order to be able to play the audio. Also recommended to use before calling the `CB_AudioFile#play` method the first time. Internally, uses the "checkPlaying" method of the used audio API object. The checking action will only be performed if the value of the "status" property of the used audio API object belongs to the `CB_AudioFile.UNCHECKED` or to the `CB_AudioFile.CHECKING` value. After checking, if the audio can be played, the "status" property of the used audio API object will get the value of `CB_AudioFile.LOADED`. Otherwise, if it cannot be played, the "status" property of the used audio API object will get the value of {CB_AudioFile.FAILED}. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `callbackOk` | function | <optional> |  | Function with no parameters to be called when the audio has been checked successfully, being "this" the `CB_AudioFile` object itself.
  `callbackError` | function | <optional> |  | Function to be called if the audio has not been checked successfully. The first and unique parameter will be a string describing the error found (if it could be determined), being "this" the `CB_AudioFile` object itself.
  `ignoreStatus` | boolean | <optional> | false | If set to false and the audio status is neither "UNCHECKED" nor "CHECKING", it will fail calling the "callbackError" function (if any). If set to true, it will try to perform the checking action regardless the status of the audio.
  `ignoreQueue` | boolean | <optional> | false | If set to false and there is already the maximum number of audio files being checked (defined internally, depending on the audio API), the function will exit and it will call itself automatically again and again until the checking process can be performed (when its queue turn has been reached). This is done for performance purposes. Some audio APIs will ignore this parameter as they do not use checking queues.
  `useCache` | boolean | <optional> | false | If set to true (not recommended) and the same audio file was checked previously, it will not perform the checking process again and it will do the same as the previous call. Some audio APIs will ignore this parameter as they do not use cache.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 576

  ##### Returns:

  Returns false if the checking could not be performed and failed. If it returns true, it can mean either the checking has been processed successfully or it will fail in the future, so it is recommended to ignore the returning value and use the callback functions instead.

  Type
    boolean

#### destructor( [stopSound] [, keepStoppedUnaltered] [, avoidOnStop] [, forceOnStop])

  Destroys the audio file object and frees memory. Sets its current status to ABORTED (`CB_AudioFile.ABORTED` value).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `stopSound` | boolean | <optional> | false | If set to true, it will also call the "stop" method of the internal audio file object for the current API (stored in the `CB_AudioFile#audioFileObject` property). This method has the same parameters as the `CB_AudioFile#stop` method.
  `keepStoppedUnaltered` | boolean | <optional> | false | Used internally as the "keepStoppedUnaltered" parameter to call the "stop" method of the internal audio file object for the current API (stored in the `CB_AudioFile#audioFileObject` property). This method has the same parameters as the `CB_AudioFile#stop` method. If the "stopSound" parameter is not set to true, this parameter will be ignored as the "stop" method will not be called.
  `avoidOnStop` | boolean | <optional> | false | Used internally as the "avoidOnStop" parameter to call the "stop" method of the internal audio file object for the current API (stored in the `CB_AudioFile#audioFileObject` property). This method has the same parameters as the `CB_AudioFile#stop` method. If the "stopSound" parameter is not set to true, this parameter will be ignored as the "stop" method will not be called.
  `forceOnStop` | boolean | <optional> | false | Used internally as the "forceOnStop" parameter to call the "stop" method of the internal audio file object for the current API (stored in the `CB_AudioFile#audioFileObject` property). This method has the same parameters as the `CB_AudioFile#stop` method. If the "stopSound" parameter is not set to true, this parameter will be ignored as the "stop" method will not be called.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 300

#### getCurrentTime() → {number}

  Gets the current time (in milliseconds) which belongs to the position where the audio is currently playing or where it has been paused. Note that some audio APIs and clients could give wrong values. Internally, uses the "getCurrentTime" method of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 789

  ##### Returns:

  Returns the current time (in milliseconds). Note that some audio APIs and clients could give wrong values.

  Type
    number

#### getDuration() → {number}

  Tells the duration of the audio (in milliseconds). Note that some clients might not calculate the duration correctly and, in this case, a zero (0) value would be returned. Internally, uses the "getDuration" method of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 595

  ##### Returns:

  Returns the duration of the audio (in milliseconds). Note that some clients might not calculate the duration correctly and, in this case, a zero (0) value would be returned.

  Type
    number

#### getProgress() → {number}

  Returns a number representing the percentage of the loading progress for the audio file (from 0 to 100, being 100 a complete loading progress). The way to calculate it internally may differ from one audio API to another and it is not totally reliable. Internally, uses the "getProgress" method of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 945

  ##### Returns:

  Returns a number representing the percentage of the loading progress for the audio file (from 0 to 100, being 100 a complete loading progress). The way to calculate it internally may differ from one audio API to another and it is not totally reliable.

  Type
    number

#### getStartAt( [numeric]) → {number|*}

  Tells the last "startAt" parameter value used by the `CB_AudioFile#play` or the `CB_AudioFile#resume` method (or used by the equivalents methods of the same name from the used audio API object). Internally, uses the "lastStartAt" property of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `numeric` | boolean | <optional> | false | If set to true, it will sanitize the returning value by returning zero instead of undefined, null or any other non-numeric value.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 916

  ##### Returns:

  Returns the last "startAt" value used by the `CB_AudioFile#play` or the `CB_AudioFile#resume` method (or used by the equivalents methods of the same name from the used audio API object). If we want it to be numeric always, the "numeric" parameter should be set to true.

  Type
    number | *

#### getStatus( [realStatus]) → {number}

  Gets the current status of the audio file.

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `realStatus` | boolean | <optional> | false | If set to true, it will return the "status" property of the used audio API object instead of the "status" property of the current CB_AudioFile object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 801

  ##### Returns:

  Returns the current status of the audio file. It is a number, which should match the value of the CB_AudioFile.UNLOADED (still unloaded), CB_AudioFile.LOADING (loading), CB_AudioFile.UNCHECKED (not checked by calling the "checkPlaying" method yet), CB_AudioFile.CHECKING (being checked by the "checkPlaying" method), CB_AudioFile.LOADED (loaded), CB_AudioFile.FAILED (failed loading or failed to play or by any other reason) or CB_AudioFile.ABORTED (aborted because it was destroyed with the "destructor" method) property.

  Type
    number

#### getStatusString( [realStatus]) → {string}

  Gets the current status of the audio file, as a string.

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `realStatus` | boolean | <optional> | false | If set to true, it will have in mind the "status" property of the used audio API object instead of the "status" property of the current CB_AudioFile object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 814

  ##### Returns:

  Returns the current status of the audio file, as a string. Possible return values are "UNLOADED", "LOADING", "UNCHECKED", "CHECKING", "LOADED", "FAILED", "ABORTED" or "UNKNOWN (UNKNOWN_STATUS)" (where "UNKNOWN_STATUS" will be a value from the "status" property not recognized as any possible status).

  Type
    string

#### getStopAt( [numeric]) → {number|*}

  Tells the last "stopAt" parameter value used by the `CB_AudioFile#play` or the `CB_AudioFile#resume` method (or used by the equivalents methods of the same name from the used audio API object). Internally, uses the "lastStopAt" property of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `numeric` | boolean | <optional> | false | If set to true, it will sanitize the returning value by returning zero instead of undefined, null or any other non-numeric value.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 931

  ##### Returns:

  Returns the last "stopAt" value used by the `CB_AudioFile#play` or the `CB_AudioFile#resume` method (or used by the equivalents methods of the same name from the used audio API object). If we want it to be numeric always, the "numeric" parameter should be set to true.

  Type
    number | *

#### getVolume() → {number}

  Returns the current volume (from 0 to the maximum value, where the maximum value will be the returning value of calling the `CB_Speaker.getVolume` function if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is set to true or it will be 100 otherwise). Internally, uses the "volume" property of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 733

  ##### Returns:

  Returns the current volume (from 0 to the maximum value, where the maximum value will be the returning value of calling the `CB_Speaker.getVolume` function if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is set to true or it will be 100 otherwise).

  Type
    number

#### getVolumeBeforeMute() → {number}

  Returns the volume (from 0 to the maximum value, where the maximum value will be the returning value of calling the `CB_Speaker.getVolume` function if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is set to true or it will be 100 otherwise) that was set before the audio was muted. Internally, uses the "volumeBeforeMute" property of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 722

  ##### Returns:

  Returns the volume (from 0 to the maximum value, where the maximum value will be the returning value of calling the `CB_Speaker.getVolume` function if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is set to true or it will be 100 otherwise) that was set before the audio was muted. If the audio was not muted before, it will contain the default volume used in the "volume" property of the used audio API object.

  Type
    number

#### isPaused() → {boolean}

  Tells whether the audio is paused or not. Internally, uses the "paused" property of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 839

  ##### Returns:

  Returns whether the audio is paused or not.

  Type
    boolean

#### isPlaying() → {boolean}

  Tells whether the audio file is playing or not. Internally, uses the `CB_AudioFile#isStopped` and `CB_AudioFile#isPaused` methods.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 828

  ##### Returns:

  Returns whether the audio file is playing or not.

  Type
    boolean

#### isStopped() → {boolean}

  Tells whether the audio file is stopped or not. Internally, uses the "stopped" property of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 850

  ##### Returns:

  Returns whether the audio file is stopped or not.

  Type
    boolean

#### load( [filePath] [, audioAPI] [, autoPlay] [, callbackOk] [, callbackError] [, ignoreOldValues] [, forceReload]) → {CB_AudioFile_API.WAAPI|CB_AudioFile_API.SM2|CB_AudioFile_API.ACMP|CB_AudioFile_API.AAPI|null}

  Loads the desired audio file with the desired options. Recommended to be called through a user-driven event (as onClick, onTouch, etc.), as some clients may need this at least the first time in order to be able to play the audio. This method will be called automatically if the "autoLoad" option was set to true when calling the `CB_AudioFile#setAudioAPI` method. The audio API used will be stored in the `CB_AudioFile#audioAPI` property.
  When this method is called, if the "status" property of the audio API object already has the "LOADED" status (defined in the `CB_AudioFile.LOADED` constant) and the "forceReload" parameter is not set to true, it will exit calling the given "callbackOk" function (if any) immediately. Otherwise, regardless the status, the status will be set to "LOADING" (defined in the `CB_AudioFile.LOADING` constant). After it, it will reach the "UNCHECKED" (defined in the `CB_AudioFile.UNCHECKED` constant). If the "autoPlay" parameter is not set to true, this will be the final status (and it will be necessary to call the "checkPlaying" method of the audio API object after it). After it and only if the "autoPlay" is set to true, as the "checkPlaying" method of the audio API object will be called internally, it will have the "CHECKING" status (defined in the `CB_AudioFile.CHECKING` constant) and finally the "LOADED" status (defined in the `CB_AudioFile.LOADED` constant) if all goes well.
  Although it is not recommended to do so, if this method is called when the audio API object has the "UNCHECKED" status (defined in the `CB_AudioFile.UNCHECKED` constant), it will call the "checkPlaying" method of the audio API object internally.
  Internally, it can use the `CB_AudioFile#audioFileObjects` property as a cache.

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `filePath` | string | <optional> | `CB_AudioFile#filePath` | The path of the audio file or a data URI. NOTE: Only some clients with some audio APIs will support data URIs.
  `audioAPI` | string | <optional> | `CB_AudioFile#audioAPI` | The desired audio API to be used. If not provided, it will try to use the previously-set one (in the `CB_AudioFile#audioAPI` property). All possible ones are defined in `CB_Configuration.CrossBase.CB_AudioFileCache_PREFERRED_AUDIO_APIS`. For example: "WAAPI" (HTML5 Web Audio API), "SM2" (SoundManager 2), "ACMP" (Apache Cordova Media Plugin) or "AAPI" (HTML5 Audio API).
  `autoPlay` | string | <optional> | false | If set to true, it will start playing the audio automatically (by calling the `CB_AudioFile#play` method internally) unless the "ignoreOldValues" parameter is set to false and the previous audio was playing or paused. If set to true and the "status" property of the audio API object reaches to the "UNCHECKED" status (defined in the `CB_AudioFile.UNCHECKED` constant), it will also call internally the "checkPlaying" method of the audio API object before anything. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).
  `callbackOk` | function | <optional> |  | Function with no parameters to be called when the audio has been loaded successfully, being "this" the `CB_AudioFile` object itself.
  `callbackError` | function | <optional> |  | Function to be called if the audio has not been loaded successfully. The first and unique parameter will be a string describing the error found (if it could be determined), being "this" the `CB_AudioFile` object itself.
  `ignoreOldValues` | string | <optional> | false | If set to true, it will ignore the old values of the previous used audio API object. This means that it will neither continue playing if it was playing (changing the audio API on-the-fly) nor keep the paused status if it was paused nor copy its "loop" property to the new audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).
  `forceReload` | string | <optional> | false | Used internally as the "forceReload" parameter when calling the "load" method of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 376
  To Do:
    - Think about using the "forceReload" just after the "callbackError" to match the parameter order of the "load" method of all the audio API objects.

  ##### Returns:

  Returns the used audio API object or null otherwise. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Type
    CB_AudioFile_API.WAAPI | CB_AudioFile_API.SM2 | CB_AudioFile_API.ACMP | CB_AudioFile_API.AAPI | null

#### mute( [onMute]) → {number}

  Mutes the audio file. Internally, uses the "mute" method of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  ##### Parameters:

  Name | Type | Argument | Description
  --- | --- | --- | ---
  `onMute` | function | <optional> | Callback function which will be called if it has been possible to mute the audio file (or at least it was possible to try it). It will not receive any parameters, being "this" the `CB_AudioFile` object. Used internally as the "onMute" parameter (with a wrapper function) to call the "mute" method of the audio API object.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 762

  ##### Returns:

  Returns the current volume (from 0 to the maximum value, where the maximum value will be the returning value of calling the `CB_Speaker.getVolume` function if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is set to true or it will be 100 otherwise). If all goes well, the returning value should be zero (0). Note that, even when it returns a zero (0) value, this does not always mean that the mute has been applied successfully.

  Type
    number

#### onStop(callbackFunction [, keepOldFunction]) → {boolean}

  Sets a function to execute when the audio file stops playing or removes it. Internally, uses the "onStop" method of the used audio API object (wrapping the given function).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `callbackFunction` | function | null |  |  | The function (event listener) that we want to execute when the event is fired. No parameters will be received, being "this" the `CB_AudioFile` object. If a null value is used, the event will be removed.
  `keepOldFunction` | boolean | <optional> | true | Defines whether we want to keep any possible previous event listener or not.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 878

  ##### Returns:

  Returns whether the event has been set or not (removed).

  Type
    boolean

#### pause( [onPause] [, keepPausedUnaltered]) → {boolean}

  Pauses the audio when it is being played. Internally, uses the "pause" method of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `onPause` | function | <optional> |  | Function without parameters to be called when the audio is paused successfully, being "this" the `CB_AudioFile` object. Used internally as the "onPause" parameter (with a wrapper function) to call the "pause" method of the audio API object.
  `keepPausedUnaltered` | boolean | <optional> | false | If set to true (not recommended), the "paused" property of the audio API object will not be set to true and it will remain with its current value. Used internally as the "keepPausedUnaltered" parameter to call the "pause" method of the audio API object.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 696

  ##### Returns:

  Returns the returning value of the "pause" method of the audio API object. It returns false if the audio is already paused or it is stopped or if it cannot be paused. Returns true otherwise. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Type
    boolean

#### play( [startAt] [, stopAt] [, loop] [, avoidDelayedPlay] [, allowedRecursiveDelay] [, onPlayStart] [, onLoadError] [, isResume]) → {boolean|integer}

  Plays the audio. Internally, uses the "play" method of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `startAt` | number | <optional> | 0 | `CB_AudioFile_API.WAAPI#lastStartAt` | `CB_AudioFile_API.SM2#lastStartAt` | `CB_AudioFile_API.ACMP#lastStartAt` | `CB_AudioFile_API.AAPI#lastStartAt` | stopAt | Time in milliseconds where we want the audio to start at. If not provided or it is not a valid number, it will use zero (0) as default which belongs to the beginning of the audio. If the value provided is greater than the "stopAt" provided, it will use the value set in the "lastStartAt" property of the used audio API object (which belongs to the "startAt" value the last time that the "play" method was called). If, even using the "lastStartAt" value is still greather than the "stopAt" provided, it will use the same value as the "stopAt" which means it will not play and will stop immediately. Used internally as the "startAt" parameter to call the "play" method of the audio API object.
  `stopAt` | number | <optional> | `CB_AudioFile_API.WAAPI#getDuration`() | `CB_AudioFile_API.SM2#getDuration`() | `CB_AudioFile_API.ACMP#getDuration`() | `CB_AudioFile_API.AAPI#getDuration`() | Time in milliseconds where we want the audio to stop at. If not provided or it is not a valid number, it will use the returning value of the "getDuration" method of the used audio API object (which should belong to the total duration of the audio, if it was calculated correctly). Used internally as the "stopAt" parameter to call the "play" method of the audio API object.
  `loop` | boolean | <optional> | `CB_AudioFile#loop` | Sets whether we want to play the audio looping (starting again and again) or just play it once. Note that at the end of each loop the "onStop" function defined (through the `CB_AudioFile#onStop` method) will not be called. Used internally as the "loop" parameter to call the "play" method of the audio API object.
  `avoidDelayedPlay` | boolean | <optional> | false | If set to false (recommended) and the audio failed previously or was aborted (destroyed), it will try to load it correctly again automatically and play it after that if possible (this can take some time so the audio could start playing after a delay). Otherwise, if set to true and the audio failed or was aborted (destroyed), the audio will not play at all and the "stop" method of the used audio API object will be called immediately. Used internally as the "avoidDelayedPlay" parameter to call the "play" method of the audio API object.
  `allowedRecursiveDelay` | boolean | <optional> | `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_ALLOWED_RECURSIVE_DELAY_DEFAULT` | The maximum amount of time (in milliseconds) of delay that we accept before start playing the audio. If the amount of time is overcome, the audio will not play at all and the "stop" method of the used audio API object will be called immediately. Used only when the "avoidDelayedPlay" parameter is set to false and the audio needs to be loaded because it failed previously or was aborted (destroyed). Used internally as the "allowedRecursiveDelay" parameter to call the "play" method of the audio API object.
  `onPlayStart` | function | <optional> |  | Function to be called when the audio starts playing successfully. The function will be called with the following parameters (in order): "startAt", "stopAt", "startAtNextLoop", "loop", "avoidDelayedPlay", "allowedRecursiveDelay" and "startPlayingTime", being "this" the `CB_AudioFile` object. If the audio is looping, this will be called only once when the audio starts playing the first time and it will not be called next loops. Used internally as the "onPlayStart" parameter to call the "play" method of the audio API object.
  `onLoadError` | function | <optional> |  | Function to be called if the audio cannot be played successfully. The first and unique parameter will be a string describing the error found (if it could be determined), being "this" the `CB_AudioFile` object. Used internally as the "onLoadError" parameter to call the "play" method of the audio API object.
  `isResume` | boolean | <optional> | false | If set to true (not recommended) and it is a looping audio, the next loop will use the value of the "lastStartAt" property of the audio API object as the "startAt" parameter when it calls the "play" method again automatically (internally). Recommended for internal usage only. Used internally as the "isResume" parameter to call the "play" method of the audio API object.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 614

  ##### Returns:

  Returns the returning value of the "play" method of the audio API object. It returns false if the duration is 0 ("startAt" and "stopAt" are the same number), returns "-1" if the audio cannot be played and an error is detected or returns true otherwise. Note that even when it returns true there can be a non-detectable error and maybe the audio is not played. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Type
    boolean | integer

#### resume( [loop] [, avoidDelayedPlay] [, allowedRecursiveDelay] [, onPlayStart] [, onLoadError]) → {boolean|integer}

  Resumes the audio (after being paused), starting from the same point it was paused previously. Internally, uses the "resume" method of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `loop` | boolean | <optional> | `CB_AudioFile#loop` | Sets whether we want to play the audio looping (starting again and again) or just play it once. Note that at the end of each loop the "onStop" function defined (through the `CB_AudioFile#onStop` method) will not be called. Used internally as the "loop" parameter to call the "resume" method of the audio API object.
  `avoidDelayedPlay` | boolean | <optional> | false | If set to false (recommended) and the audio failed previously or was aborted (destroyed), it will try to load it correctly again automatically and play it after that if possible (this can take some time so the audio could start playing after a delay). Otherwise, if set to true and the audio failed or was aborted (destroyed), the audio will not play at all and the "stop" method of the used audio API object will be called immediately. Used internally as the "avoidDelayedPlay" parameter to call the "resume" method of the audio API object.
  `allowedRecursiveDelay` | boolean | <optional> | `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_ALLOWED_RECURSIVE_DELAY_DEFAULT` | The maximum amount of time (in milliseconds) of delay that we accept before start playing the audio. If the amount of time is overcome, the audio will not play at all and the "stop" method of the used audio API object will be called immediately. Used only when the "avoidDelayedPlay" parameter is set to false and the audio needs to be loaded because it failed previously or was aborted (destroyed). Used internally as the "allowedRecursiveDelay" parameter to call the "resume" method of the audio API object.
  `onPlayStart` | function | <optional> |  | Function to be called when the audio starts playing successfully. The function will be called with the following parameters (in order): "startAt", "stopAt", "startAtNextLoop", "loop", "avoidDelayedPlay", "allowedRecursiveDelay" and "startPlayingTime", being "this" the `CB_AudioFile` object. If the audio is looping, this will be called only once when the audio starts playing the first time and it will not be called next loops. Used internally as the "onPlayStart" parameter to call the "resume" method of the audio API object.
  `onLoadError` | function | <optional> |  | Function to be called if the audio cannot be played successfully. It will not be called if the audio is not paused or is stopped. The first and unique parameter will be a string describing the error found (if it could be determined), being "this" the `CB_AudioFile` object. Used internally as the "onLoadError" parameter to call the "resume" method of the audio API object.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 657

  ##### Returns:

  Returns the returning value of the "resume" method of the audio API object. It returns false if the audio is not paused or it is stopped, returns "-1" if the audio cannot be played and an error is detected or returns true otherwise. Note that even when it returns true there can be a non-detectable error and maybe the audio is not played. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Type
    boolean | integer

#### setAudioAPI( [audioAPI] [, autoLoad] [, autoPlay] [, callbackOk] [, callbackError] [, ignoreOldValues] [, filePath] [, forceReload]) → {string}

  Sets the desired audio API. This method will also be called automatically by the constructor. If the "autoLoad" parameter is set to true, it will call the `CB_AudioFile#load` method internally, changing the audio API on-the-fly, and the audio will try to continue playing if it was playing at the moment of calling this method. Check the `CB_AudioFile#load` method documentation for more information. If the "autoLoad" parameter is set to true, it is recommended to be called through a user-driven event (as onClick, onTouch, etc.), as some clients may need this at least the first time in order to be able to play the audio. The audio API used will be stored in the `CB_AudioFile#audioAPI` property.

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `audioAPI` | string | <optional> | CB_AudioDetector.getPreferredAPI(undefined, false, null) || CB_AudioDetector.getPreferredAPI(undefined, true, null) | The desired audio API to be used. If not provided, it will try to calculate the best one for the current client by calling the `CB_AudioDetector.getPreferredAPI` function internally. Audio API support will depend on the current client being used. All possible ones are defined in `CB_Configuration.CrossBase.CB_AudioFileCache_PREFERRED_AUDIO_APIS`. For example: "WAAPI" (HTML5 Web Audio API), "SM2" (SoundManager 2), "ACMP" (Apache Cordova Media Plugin) or "AAPI" (HTML5 Audio API). Used internally as the "audioAPI" parameter when calling the `CB_AudioFile#load` method internally (only when the "autoLoad" parameter is set to true).
  `autoLoad` | string | <optional> | true | If set to false, it will not call the `CB_AudioFile#load` method internally and will only set the `CB_AudioFile#audioAPI` property (not recommended).
  `autoPlay` | string | <optional> | false | Used internally as the "autoPlay" parameter when calling the `CB_AudioFile#load` method internally (only when the "autoLoad" parameter is set to true).
  `callbackOk` | function | <optional> |  | Function with no parameters to be called when the audio has been loaded successfully, being "this" the `CB_AudioFile` object itself. Used internally as the "callbackOk" parameter when calling the `CB_AudioFile#load` method internally (only when the "autoLoad" parameter is set to true).
  `callbackError` | function | <optional> |  | Function to be called if the audio has not been loaded successfully. The first and unique parameter will be a string describing the error found (if it could be determined), being "this" the `CB_AudioFile` object itself. Used internally as the "callbackError" parameter when calling the `CB_AudioFile#load` method internally (only when the "autoLoad" parameter is set to true).
  `ignoreOldValues` | string | <optional> | false | Used internally as the "ignoreOldValues" parameter when calling the `CB_AudioFile#load` method internally (only when the "autoLoad" parameter is set to true).
  `filePath` | string | <optional> | `CB_AudioFile#filePath` | Used internally as the "filePath" parameter when calling the `CB_AudioFile#load` method internally (only when the "autoLoad" parameter is set to true).
  `forceReload` | string | <optional> | false | Used internally as the "forceReload" parameter when calling the `CB_AudioFile#load` method internally (only when the "autoLoad" parameter is set to true).

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 322
  To Do:
    - Think about using the "forceReload" just after the "callbackError" to match the parameter order of the "load" method of all the audio API objects.

  ##### Returns:

  Returns the desired audio API that has been tried to set, in upper case (successfully or not).

  Type
    string

#### setVolume( [volume] [, forceSetVolumeProperty] [, onSetVolume]) → {number}

  Sets the desired volume for the audio file (from 0 to the maximum value, where the maximum value will be the returning value of calling the `CB_Speaker.getVolume` function if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is set to true or it will be 100 otherwise). Internally, uses the "setVolume" method of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `volume` | number | <optional> | `CB_Speaker.getVolume()` | `CB_Configuration.CrossBase.CB_Speaker_DEFAULT_VOLUME` | Desired volume (from 0 to the maximum value, where the maximum value will be the returning value of calling the `CB_Speaker.getVolume` function if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is set to true or it will be 100 otherwise). Used internally as the "volume" parameter to call the "setVolume" method of the audio API object.
  `forceSetVolumeProperty` | boolean | <optional> | false | If set to true (not recommended), it will change the "volume" property of the used audio API object even when the volume failed to be changed. Used internally as the "forceSetVolumeProperty" parameter to call the "setVolume" method of the audio API object.
  `onSetVolume` | function | <optional> |  | Callback function which will be called if it has been possible to set the volume (or at least it was possible to try it). It will not receive any parameters, being "this" the `CB_AudioFile` object. Used internally as the "onSetVolume" parameter (with a wrapper function) to call the "setVolume" method of the audio API object.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 748

  ##### Returns:

  Returns the current volume (from 0 to the maximum value, where the maximum value will be the returning value of calling the `CB_Speaker.getVolume` function if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is set to true or it will be 100 otherwise).

  Type
    number

#### stop( [keepStoppedUnaltered] [, avoidOnStop] [, forceOnStop]) → {boolean}

  Stops the audio. Internally, uses the "stop" method of the used audio API object. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  ##### Parameters:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `keepStoppedUnaltered` | boolean | <optional> | false | If set to true (not recommended), the "stopped" property of the audio API object will not be set to true and it will remain with its current value. Used internally as the "keepStoppedUnaltered" parameter to call the "stop" method of the audio API object.
  `avoidOnStop` | boolean | <optional> | false | If set to false and there is an "onStop" function defined (through the `CB_AudioFile#onStop` method), it will be called after stopping the audio (or after trying to do it, at least) but only if either the "forceOnStop" parameter is set to true or if the "keepStoppedUnaltered" parameter is set to false and the audio was not already stopped before. If set to true, the "onStop" function (if any) will not be called at all. Used internally as the "avoidOnStop" parameter to call the "stop" method of the audio API object.
  `forceOnStop` | boolean | <optional> | false | If it is set to true and the "avoidOnStop" parameter is set to false and there is an "onStop" function defined (through the `CB_AudioFile#onStop` method), it will be called regardless the audio was stopped before or not. If set to false, the "onStop" function (if any) will only be called if the "keepStoppedUnaltered" parameter is set to false and the audio was not already stopped before. This parameter will be ignored if the "avoidOnStop" parameter is set to true. Used internally as the "forceOnStop" parameter to call the "stop" method of the audio API object.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 711

  ##### Returns:

  Returns the returning value of the "stop" method of the audio API object. It returns false if the stopping action cannot be performed at all (this could happen with the internal audio API has not been loaded properly, for example). Returns true otherwise (this only means that it has been tried to be stopped but it could not be successfully). Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  Type
    boolean

#### unmute( [onUnmute]) → {number}

  Restores audio after muting it (unmutes it). Internally, uses the "unmute" method of the used audio API object which uses its own "volumeBeforeMute" property. Possible internal audio API objects are `CB_AudioFile_API.WAAPI` object for "WAAPI" (HTML5 Web Audio API), `CB_AudioFile_API.SM2` object for "SM2" (SoundManager 2), `CB_AudioFile_API.ACMP` object for "ACMP" (Apache Cordova Media Plugin) or `CB_AudioFile_API.AAPI` object for "AAPI" (HTML5 Audio API).

  ##### Parameters:

  Name | Type | Argument | Description
  --- | --- | --- | ---
  `onUnmute` | function | <optional> | Callback function which will be called if it has been possible to unmute the audio file (or at least it was possible to try it). It will not receive any parameters, being "this" the `CB_AudioFile` object. Used internally as the "onUnmute" parameter (with a wrapper function) to call the "unmute" method of the audio API object.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 776

  ##### Returns:

  Returns the current volume (from 0 to the maximum value, where the maximum value will be the returning value of calling the `CB_Speaker.getVolume` function if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is set to true or it will be 100 otherwise).

  Type
    number

### Type Definitions

#### OPTIONS

  Object with the options for an audio file. The format is the following one: { autoLoad: boolean, autoPlay: boolean, loop: boolean, volume: number }.

  ##### Type:

  - Object

  ##### Properties:

  Name | Type | Argument | Default | Description
  --- | --- | --- | --- | ---
  `autoLoad` | boolean | <optional> | `CB_AudioFile#DEFAULT_OPTIONS`.autoLoad | Value which will be used as the "autoLoad" parameter when calling the `CB_AudioFile#setAudioAPI` method internally (when the constructor is called).
  `autoPlay` | boolean | <optional> | `CB_AudioFile#DEFAULT_OPTIONS`.autoPlay | Value which will be used as the "autoPlay" parameter when calling the `CB_AudioFile#setAudioAPI` method internally (when the constructor is called).
  `loop` | boolean | <optional> | `CB_AudioFile#DEFAULT_OPTIONS`.loop | Value that will be used for the `CB_AudioFile#loop` property.
  `volume` | number | <optional> | `CB_AudioFile#DEFAULT_OPTIONS`.volume | The desired volume (from 0 to the maximum value, where the maximum value will be the returning value of calling the `CB_Speaker.getVolume` function if the `CB_Configuration.CrossBase.CB_AudioFile_AudioFileCache_USE_SPEAKER_VOLUME_AS_MAXIMUM` property is set to true or it will be 100 otherwise) that will be used for the `CB_AudioFile#volume` property.

  Source:
    - CrossBase/audiovisual/audio/CB_AudioFile.js, line 186

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