Type Alias AUScheduleParameterBlock 

pub type AUScheduleParameterBlock = *mut DynBlock<dyn Fn(AUEventSampleTime, AUAudioFrameCount, AUParameterAddress, AUValue)>;

Available on crate features AUAudioUnit and AUParameters and AudioUnitProperties and block2 only.

Block to schedule parameter changes.

Not all parameters are rampable; check the parameter’s flags. Note: If the parameter is not rampable, a rampDuration of zero will result in an immediate change to the target value, however, if rampDuration is non-zero, the parameter will not change.

Parameter eventSampleTime: The sample time (timestamp->mSampleTime) at which the parameter is to begin changing. When scheduling parameters during the render cycle (e.g. via a render observer) this time can be AUEventSampleTimeImmediate plus an optional buffer offset, in which case the event is scheduled at that position in the current render cycle.

Parameter rampDurationSampleFrames: The number of sample frames over which the parameter’s value is to ramp, or 0 if the parameter change should take effect immediately.

Parameter parameterAddress: The parameter’s address.

Parameter value: The parameter’s new value if the ramp duration is 0; otherwise, the value at the end of the scheduled ramp.

See also Apple’s documentation