From 6f2684a0c1abca250e0de4710511ffa423c29fac Mon Sep 17 00:00:00 2001
From: QuentinArguillere <quentin.arguillere@belledone-communications.com>
Date: Thu, 8 Oct 2020 17:24:47 +0200
Subject: [PATCH] Expose audio output selection

---
 .../CallTutorial/CallExample.swift            | 38 +++++++++++--------
 .../CallTutorial/ContentView.swift            | 34 +++++++++--------
 2 files changed, 41 insertions(+), 31 deletions(-)

diff --git a/swift/CallTutorial/CallTutorial/CallExample.swift b/swift/CallTutorial/CallTutorial/CallExample.swift
index 75d6ead..4804e58 100644
--- a/swift/CallTutorial/CallTutorial/CallExample.swift
+++ b/swift/CallTutorial/CallTutorial/CallExample.swift
@@ -32,7 +32,8 @@ class CallExampleContext : ObservableObject
 	@Published var id : String = "sip:myphone@sip.linphone.org"
 	@Published var passwd : String = "mypassword"
 	@Published var loggedIn: Bool = false
-
+	
+	@Published var currentAudioDevice : AudioDevice!
 
 	init() {
 		mCallTutorialDelegate.tutorialContext = self
@@ -44,11 +45,11 @@ class CallExampleContext : ObservableObject
 		mCore.autoIterateEnabled = true
 		try? mCore.start()
 
+		currentAudioDevice = mCore.audioDevices[0]
 		mCore.addDelegate(delegate: mCallTutorialDelegate)
 	}
 
-	func registrationExample()
-	{
+	func registrationExample() {
 		if (!loggedIn) {
 			do {
 				proxy_cfg = try createAndInitializeProxyConfig(core : mCore, identity: id, password: passwd)
@@ -99,24 +100,23 @@ class CallExampleContext : ObservableObject
 		}
 	}
 
-	func microphoneMuteToggle()
-	{
+	func microphoneMuteToggle() {
 		if (callRunning) {
 			mCall.microphoneMuted = !mCall.microphoneMuted
 			microphoneMuted = mCall.microphoneMuted
 		}
 	}
 
-	func speaker()
-	{
-		speakerEnabled = !speakerEnabled
-		do {
-			try AVAudioSession.sharedInstance().overrideOutputAudioPort(
-				speakerEnabled ?
-					AVAudioSession.PortOverride.speaker : AVAudioSession.PortOverride.none)
-		} catch {
-			print(error)
+	func changeAudioOutput() {
+		let devices = mCore.audioDevices
+		var newIdx = 0;
+		for i in 0...devices.count {
+			if (devices[i].deviceName == currentAudioDevice.deviceName) {
+				newIdx = (i + 1) % devices.count
+				break
+			}
 		}
+		mCore.outputAudioDevice =  devices[newIdx]
 	}
 
 	func acceptCall()
@@ -127,7 +127,6 @@ class CallExampleContext : ObservableObject
 			print(error)
 		}
 	}
-	
 }
 
 // Callback for actions when a change in the Registration State happens
@@ -160,4 +159,13 @@ class CallTutorialDelegate: CoreDelegate {
 			tutorialContext.isCallIncoming = false
 		}
 	}
+	
+	func onAudioDeviceChanged(core: Core, audioDevice: AudioDevice) {
+		tutorialContext.currentAudioDevice = audioDevice
+	}
+	func onAudioDevicesListUpdated(core: Core) {
+		if let outputDevice = core.outputAudioDevice {
+			
+		}
+	}
 }
diff --git a/swift/CallTutorial/CallTutorial/ContentView.swift b/swift/CallTutorial/CallTutorial/ContentView.swift
index a584361..a4cb6d5 100644
--- a/swift/CallTutorial/CallTutorial/ContentView.swift
+++ b/swift/CallTutorial/CallTutorial/ContentView.swift
@@ -11,7 +11,7 @@ import SwiftUI
 struct ContentView: View {
 
 	@ObservedObject var tutorialContext : CallExampleContext
-
+	
 	func getCallButtonText() -> String {
 		if (tutorialContext.callRunning) {
 			return "Update Call"
@@ -35,7 +35,6 @@ struct ContentView: View {
 			return "No Call"
 		}
 	}
-
 	var body: some View {
 		VStack(alignment: .leading) {
 			Group {
@@ -75,27 +74,30 @@ struct ContentView: View {
 			.padding(.top, 5)
 			VStack {
 				HStack {
-					Text("Speaker :")
-					Button(action: tutorialContext.speaker)
-					{
-						Text(tutorialContext.speakerEnabled ? "ON" : "OFF")
-						.font(.title)
-						.foregroundColor(Color.white)
-						.frame(width: 60.0, height: 30.0)
-						.background(Color.gray)
-					}
-				}
-				HStack {
-					Text("Microphone :")
+					Text("Microphone :").frame(width: 200, height: 40.0)
 					Button(action: tutorialContext.microphoneMuteToggle)
 					{
 						Text(tutorialContext.microphoneMuted ? "Unmute" : "Mute")
 						.font(.title)
 						.foregroundColor(Color.white)
-						.frame(width: 110.0, height: 30.0)
+						.frame(width: 100.0, height: 40.0)
 						.background(Color.gray)
 					}
-				}.padding(.top)
+				}.padding()
+				HStack {
+					VStack {
+						Text("Audio device :")
+						Text("\(tutorialContext.currentAudioDevice.deviceName)")
+					}.frame(width: 200, height: 40.0)
+					Button(action: tutorialContext.changeAudioOutput)
+					{
+						Text("Change")
+						.font(.title)
+						.foregroundColor(Color.white)
+						.frame(width: 115.0, height: 40.0)
+						.background(Color.gray)
+					}
+				}.padding()
 			}
 			Spacer()
 			VStack {