CAShow() not outputting to console

Question

Trying to test the state of an AUGraph in a Swift 4.0 project.

var audioGraph: AUGraph? = nil

func createAUGraph() {

    NewAUGraph(&self.audioGraph)

    CAShow(UnsafeMutablePointer<AUGraph>(self.audioGraph!))
    CAShow(UnsafeMutablePointer(self.audioGraph!)) }

I am not seeing anything output to the Console, however.

I've stepped through the code and the AUGraph and AUNodes seem to be created and instantiated successfully..

Is this an indication the AUGraph does not exist ... Or have I used this AudioToolBox method incorrectly?

Answer 1

Yes, you're right. There's no output. Seemingly it's already muted in Swift 4.

import AudioToolbox

var audioGraph: AUGraph? = nil
var acd: UnsafePointer<AudioComponentDescription>? = nil
var outNode: UnsafeMutablePointer<AUNode>? = nil

func createAUGraph() {
    AUGraphAddNode(audioGraph!, acd!, outNode!)
    NewAUGraph(UnsafeMutablePointer<AUGraph>(audioGraph!))
    CAShow(UnsafeMutablePointer<AUGraph>(audioGraph!))
    CAShow(UnsafeMutablePointer(audioGraph!))
}

createAUGraph()