A structure that describes a scheduled parameter event.


struct AUParameterEvent


Instance Properties

var eventSampleTime: AUEventSampleTime

The sample time at which the event is scheduled to occur.

var next: UnsafeMutablePointer<AURenderEvent>?

The next event in a linked list of events.

var rampDurationSampleFrames: AUAudioFrameCount

The ramp duration, in sample frames. Must be 0 for a non-ramped event; otherwise, must be greater than 0 for a ramped event.

var reserved: (UInt8, UInt8, UInt8)

Reserved field. Must be 0.

var value: AUValue

For a non-ramped event, this is the new parameter value. For a ramped event, this is the parameter value at the end of the ramp.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

Learn more about using Apple's beta software