timcowlishaw

import CoreMotion
// [ Elided other imports ]

class ViewController: UIViewController, ARSession { // [ Elided other protocols ]
	let hmm = CMHeadphoneMotionManager()
      var deviceTransform: simd_float4x4 = matrix_identity_float4x4;
      var headphoneTransform: simd_float4x4 = matrix_identity_float4x4;

	override func viewDidLoad() {
 	    hmm.startDeviceMotionUpdates(to: OperationQueue.current!, withHandler: {[weak self] motion, error  in

timcowlishaw

func session(_ session: ARSession, didUpdate frame: ARFrame) {
        let transform = frame.camera.transform
        phaseListener.transform = transform
}

timcowlishaw

 let distanceModelParameters = PHASEGeometricSpreadingDistanceModelParameters()
 distanceModelParameters.fadeOutParameters =
    	PHASEDistanceModelFadeOutParameters(cullDistance: cull_distance_for_this_source) // For you to specify...
distanceModelParameters.rolloffFactor = rolloff_factor_for_this_source // ... as is this.

timcowlishaw

let spatialPipelineFlags : PHASESpatialPipeline.Flags = [.directPathTransmission, .lateReverb]
let spatialPipeline = PHASESpatialPipeline(flags: spatialPipelineFlags)!
spatialPipeline.entries[PHASESpatialCategory.lateReverb]!.sendLevel = send_level_for_this_source; // Likewise, this is for you to decide on :-)

timcowlishaw

let spatialMixerDefinition = PHASESpatialMixerDefinition(spatialPipeline: spatialPipeline) //spatial Pipeline not yet defined
spatialMixerDefinition.distanceModelParameters = distanceModelParameters // distanceModelParameters not yet defined

timcowlishaw

let mesh = MDLMesh.newIcosahedron(withRadius: 2.0, inwardNormals: false, allocator: nil)

let shape = PHASEShape(engine: phaseEngine, mesh: mesh)
let source = PHASESource(engine: phaseEngine, shapes: [shape])
source.transform = the_position_of_the_object_in_our_world // you'll need to provide this :-)
try! phaseEngine.rootObject.addChild(source)

timcowlishaw

let mixerParameters = PHASEMixerParameters()
mixerParameters.addSpatialMixerParameters(
    identifier: phaseSpatialMixerDefinition.identifier, //phaseSpatialMixerDefinition not yet defined
    source: source, listener: phaseListener // source not yet defined
)

timcowlishaw

let samplerNodeDefinition = PHASESamplerNodeDefinition(
    soundAssetIdentifier: "a_unique_asset_identifier",      
    mixerDefinition: phaseSpatialMixerDefinition! // As yet undefined
)
        
samplerNodeDefinition.playbackMode = .looping
samplerNodeDefinition.setCalibrationMode(
    calibrationMode: .relativeSpl, level: 12
)
samplerNodeDefinition.cullOption = .sleepWakeAtRealtimeOffset

timcowlishaw

 try! phaseEngine.assetRegistry.registerSoundAsset(
        url: url, identifier: "a_unique_asset_identifier", 
        assetType: .resident, channelLayout: nil, 
        normalizationMode: .dynamic
 )

timcowlishaw

let fileName = "piano" // piano.mp3 in the app bundle root.
let url = Bundle.main.url(forResource: fileName, withExtension: "mp3")!