AudioControl

public class AudioControl : AudioObject

A HAL audio control object

This class has a single scope (kAudioObjectPropertyScopeGlobal) and a single element (kAudioObjectPropertyElementMaster)

Remark

This class correponds to objects with base class kAudioControlClassID

  • Undocumented

    Declaration

    Swift

    public override var debugDescription: String { get }

  • Returns the control’s scope

    Remark

    This corresponds to the property kAudioControlPropertyScope

    Declaration

    Swift

    public func scope() throws -> PropertyScope

  • Returns the control’s element

    Remark

    This corresponds to the property kAudioControlPropertyElement

    Declaration

    Swift

    public func element() throws -> PropertyElement

  • Returns true if self has selector

    Declaration

    Swift

    public func hasSelector(_ selector: AudioObjectSelector<AudioControl>) -> Bool

    Parameters

    selector

    The selector of the desired property

  • Returns true if selector is settable

    Throws

    An error if self does not have the requested property

    Declaration

    Swift

    public func isSelectorSettable(_ selector: AudioObjectSelector<AudioControl>) throws -> Bool

    Parameters

    selector

    The selector of the desired property

  • Registers block to be performed when selector changes

    Throws

    An error if the property listener could not be registered

    Declaration

    Swift

    public func whenSelectorChanges(_ selector: AudioObjectSelector<AudioControl>, perform block: PropertyChangeNotificationBlock?) throws

    Parameters

    selector

    The selector of the desired property
    block

    A closure to invoke when the property changes or nil to remove the previous value