Merge branch 'mkirk/bt-audio-2'

Signal/Images.xcassets/ic_speaker_bluetooth_inactive_audio_mode.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "ic_speaker_bluetooth_inactive_audio_mode.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Signal/Images.xcassets/ic_speaker_bluetooth_inactive_video_mode.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "ic_speaker_bluetooth_inactive_video_mode.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Signal/src/UserInterface/Strings.swift

@@ -7,6 +7,11 @@ import Foundation
 /**
  * Strings re-used in multiple places should be added here.
  */
+
+@objc class CommonStrings: NSObject {
+    static let dismissButton = NSLocalizedString("DISMISS_BUTTON_TEXT", comment: "Short text to dismiss current modal / actionsheet / screen")
+}
+
 @objc class CallStrings: NSObject {
 
     static let callStatusFormat = NSLocalizedString("CALL_STATUS_FORMAT", comment: "embeds {{Call Status}} in call screen label. For ongoing calls, {{Call Status}} is a seconds timer like 01:23, otherwise {{Call Status}} is a short text like 'Ringing', 'Busy', or 'Failed Call'")

Signal/src/ViewControllers/CallViewController.swift

@@ -41,7 +41,7 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
     var ongoingCallView: UIView!
 
     var hangUpButton: UIButton!
-    var speakerPhoneButton: UIButton!
+    var audioSourceButton: UIButton!
     var audioModeMuteButton: UIButton!
     var audioModeVideoButton: UIButton!
     var videoModeMuteButton: UIButton!
@@ -86,11 +86,45 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
     var settingsNagView: UIView!
     var settingsNagDescriptionLabel: UILabel!
 
+    // MARK: Audio Source
+
+    var hasAlternateAudioSources: Bool {
+        Logger.info("\(TAG) available audio routes count: \(allAudioSources.count)")
+        // internal mic and speakerphone will be the first two, any more than one indicates e.g. an attached bluetooth device.
+
+        // TODO is this sufficient? Are their devices w/ bluetooth but no external speaker? e.g. ipod?
+        return allAudioSources.count > 2
+    }
+
+    var allAudioSources: Set<AudioSource>
+
+    var appropriateAudioSources: Set<AudioSource> {
+        if call.hasLocalVideo {
+            let appropriateForVideo = allAudioSources.filter { audioSource in
+                if audioSource.isBuiltInSpeaker {
+                    return true
+                } else {
+                    guard let portDescription = audioSource.portDescription else {
+                        owsFail("Only built in speaker should be lacking a port description.")
+                        return false
+                    }
+
+                    // Don't use receiver when video is enabled. Only bluetooth or speaker
+                    return portDescription.portType != AVAudioSessionPortBuiltInMic
+                }
+            }
+            return Set(appropriateForVideo)
+        } else {
+            return allAudioSources
+        }
+    }
+
     // MARK: Initializers
 
     required init?(coder aDecoder: NSCoder) {
         contactsManager = Environment.getCurrent().contactsManager
         callUIAdapter = Environment.getCurrent().callUIAdapter
+        allAudioSources = Set(callUIAdapter.audioService.availableInputs)
         super.init(coder: aDecoder)
         observeNotifications()
     }
@@ -98,6 +132,7 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
     required init() {
         contactsManager = Environment.getCurrent().contactsManager
         callUIAdapter = Environment.getCurrent().callUIAdapter
+        allAudioSources = Set(callUIAdapter.audioService.availableInputs)
         super.init(nibName: nil, bundle: nil)
         observeNotifications()
     }
@@ -107,6 +142,11 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
                                                selector:#selector(didBecomeActive),
                                                name:NSNotification.Name.UIApplicationDidBecomeActive,
                                                object:nil)
+
+        NotificationCenter.default.addObserver(forName: CallAudioServiceSessionChanged, object: nil, queue: nil) { _ in
+            self.didChangeAudioSession()
+        }
+
     }
 
     deinit {
@@ -157,7 +197,7 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
         // Subscribe for future call updates
         call.addObserverAndSyncState(observer: self)
 
-        Environment.getCurrent().callService.addObserverAndSyncState(observer:self)
+        Environment.getCurrent().callService.addObserverAndSyncState(observer: self)
     }
 
     // MARK: - Create Views
@@ -288,8 +328,8 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
 
 //        textMessageButton = createButton(imageName:"message-active-wide",
 //                                                action:#selector(didPressTextMessage))
-        speakerPhoneButton = createButton(imageName:"audio-call-speaker-inactive",
-                                          action:#selector(didPressSpeakerphone))
+        audioSourceButton = createButton(imageName:"audio-call-speaker-inactive",
+                                          action:#selector(didPressAudioSource))
         hangUpButton = createButton(imageName:"hangup-active-wide",
                                     action:#selector(didPressHangup))
         audioModeMuteButton = createButton(imageName:"audio-call-mute-inactive",
@@ -305,12 +345,53 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
         setButtonSelectedImage(button: videoModeMuteButton, imageName: "video-mute-selected")
         setButtonSelectedImage(button: audioModeVideoButton, imageName: "audio-call-video-active")
         setButtonSelectedImage(button: videoModeVideoButton, imageName: "video-video-selected")
-        setButtonSelectedImage(button: speakerPhoneButton, imageName: "audio-call-speaker-active")
 
         ongoingCallView = createContainerForCallControls(controlGroups : [
-            [audioModeMuteButton, speakerPhoneButton, audioModeVideoButton ],
+            [audioModeMuteButton, audioSourceButton, audioModeVideoButton ],
             [videoModeMuteButton, hangUpButton, videoModeVideoButton ]
-            ])
+        ])
+    }
+
+    func didChangeAudioSession() {
+        AssertIsOnMainThread()
+
+        // Which sources are available depends on the state of your Session.
+        // When the audio session is not yet in PlayAndRecord none are available
+        // Then if we're in speakerphone, bluetooth isn't available. 
+        // So we acrew all possible audio sources in a set, and that list lives as longs as the CallViewController
+        // The downside of this is that if you e.g. unpair your bluetooth mid call, it will still appear as an option
+        // until your next call.
+        // FIXME: There's got to be a better way, but this is where I landed after a bit of work, and seems to work
+        // pretty well in practrice.
+        let availableInputs = callUIAdapter.audioService.availableInputs
+        self.allAudioSources.formUnion(availableInputs)
+    }
+
+    func presentAudioSourcePicker() {
+        AssertIsOnMainThread()
+
+        let actionSheetController = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
+
+        let dismissAction = UIAlertAction(title:  CommonStrings.dismissButton, style: .cancel, handler: nil)
+        actionSheetController.addAction(dismissAction)
+
+        let currentAudioSource = callUIAdapter.audioService.currentAudioSource(call: self.call)
+        for audioSource in self.appropriateAudioSources {
+            let routeAudioAction = UIAlertAction(title: audioSource.localizedName, style: .default) { _ in
+                self.callUIAdapter.setAudioSource(call: self.call, audioSource: audioSource)
+            }
+
+            // HACK: private API to create checkmark for active audio source.
+            routeAudioAction.setValue(currentAudioSource == audioSource, forKey: "checked")
+
+            // TODO: pick some icons. Leaving out for MVP
+            // HACK: private API to add image to actionsheet
+            // routeAudioAction.setValue(audioSource.image, forKey: "image")
+
+            actionSheetController.addAction(routeAudioAction)
+        }
+
+        self.present(actionSheetController, animated: true)
     }
 
     func setButtonSelectedImage(button: UIButton, imageName: String) {
@@ -653,7 +734,6 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
         videoModeMuteButton.isSelected = call.isMuted
         audioModeVideoButton.isSelected = call.hasLocalVideo
         videoModeVideoButton.isSelected = call.hasLocalVideo
-        speakerPhoneButton.isSelected = call.isSpeakerphoneEnabled
 
         // Show Incoming vs. Ongoing call controls
         let isRinging = callState == .localRinging
@@ -668,7 +748,8 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
 
         // Rework control state if local video is available.
         let hasLocalVideo = !localVideoView.isHidden
-        for subview in [speakerPhoneButton, audioModeMuteButton, audioModeVideoButton] {
+
+        for subview in [audioModeMuteButton, audioModeVideoButton] {
             subview?.isHidden = hasLocalVideo
         }
         for subview in [videoModeMuteButton, videoModeVideoButton] {
@@ -685,6 +766,32 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
             callStatusLabel.isHidden = false
         }
 
+        // Audio Source Handling (bluetooth)
+        if self.hasAlternateAudioSources {
+            // With bluetooth, button does not stay selected. Pressing it pops an actionsheet
+            // and the button should immediately "unselect".
+            audioSourceButton.isSelected = false
+
+            if hasLocalVideo {
+                audioSourceButton.setImage(#imageLiteral(resourceName: "ic_speaker_bluetooth_inactive_video_mode"), for: .normal)
+                audioSourceButton.setImage(#imageLiteral(resourceName: "ic_speaker_bluetooth_inactive_video_mode"), for: .selected)
+            } else {
+                audioSourceButton.setImage(#imageLiteral(resourceName: "ic_speaker_bluetooth_inactive_audio_mode"), for: .normal)
+                audioSourceButton.setImage(#imageLiteral(resourceName: "ic_speaker_bluetooth_inactive_audio_mode"), for: .selected)
+            }
+            audioSourceButton.isHidden = false
+        } else {
+            // No bluetooth audio detected
+
+            audioSourceButton.isSelected = call.isSpeakerphoneEnabled
+            audioSourceButton.setImage(#imageLiteral(resourceName: "audio-call-speaker-inactive"), for: .normal)
+            audioSourceButton.setImage(#imageLiteral(resourceName: "audio-call-speaker-active"), for: .selected)
+
+            // If there's no bluetooth, we always use speakerphone, so no need for
+            // a button, giving more screen back for the video.
+            audioSourceButton.isHidden = hasLocalVideo
+        }
+
         // Dismiss Handling
         switch callState {
         case .remoteHangup, .remoteBusy, .localFailure:
@@ -742,17 +849,32 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
         }
     }
 
-    func didPressSpeakerphone(sender speakerphoneButton: UIButton) {
+    func didPressAudioSource(sender button: UIButton) {
         Logger.info("\(TAG) called \(#function)")
-        speakerphoneButton.isSelected = !speakerphoneButton.isSelected
+
+        if self.hasAlternateAudioSources {
+            presentAudioSourcePicker()
+        } else {
+            didPressSpeakerphone(sender: button)
+        }
+    }
+
+    func didPressSpeakerphone(sender button: UIButton) {
+        Logger.info("\(TAG) called \(#function)")
+        button.isSelected = !button.isSelected
         if let call = self.call {
-            callUIAdapter.setIsSpeakerphoneEnabled(call: call, isEnabled: speakerphoneButton.isSelected)
+            if button.isSelected {
+                callUIAdapter.setAudioSource(call: call, audioSource: AudioSource.builtInSpeaker)
+            } else {
+                // use default audio source
+                callUIAdapter.setAudioSource(call: call, audioSource: nil)
+            }
         } else {
             Logger.warn("\(TAG) pressed mute, but call was unexpectedly nil")
         }
     }
 
-    func didPressTextMessage(sender speakerphoneButton: UIButton) {
+    func didPressTextMessage(sender button: UIButton) {
         Logger.info("\(TAG) called \(#function)")
 
         dismissIfPossible(shouldDelay:false)
@@ -860,7 +982,7 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
         self.updateCallUI(callState: call.state)
     }
 
-    internal func speakerphoneDidChange(call: SignalCall, isEnabled: Bool) {
+    internal func audioSourceDidChange(call: SignalCall, audioSource: AudioSource?) {
         AssertIsOnMainThread()
         self.updateCallUI(callState: call.state)
     }

Signal/src/ViewControllers/CodeVerificationViewController.m

@@ -301,7 +301,7 @@ NS_ASSUME_NONNULL_BEGIN
                                                               message:error.localizedDescription
                                                        preferredStyle:UIAlertControllerStyleAlert];
     }
-    UIAlertAction *dismissAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"DISMISS_BUTTON_TEXT", nil)
+    UIAlertAction *dismissAction = [UIAlertAction actionWithTitle:CommonStrings.dismissButton
                                                             style:UIAlertActionStyleDefault
                                                           handler:^(UIAlertAction *action) {
                                                               [_challengeTextField becomeFirstResponder];

Signal/src/ViewControllers/ConversationView/MessagesViewController.m

@@ -872,13 +872,11 @@ typedef enum : NSUInteger {
                     }];
         [actionSheetController addAction:verifyAction];
 
-        UIAlertAction *dismissAction =
-            [UIAlertAction actionWithTitle:NSLocalizedString(@"DISMISS_BUTTON_TEXT",
-                                               @"Generic short text for button to dismiss a dialog")
-                                     style:UIAlertActionStyleCancel
-                                   handler:^(UIAlertAction *_Nonnull action) {
-                                       [weakSelf resetVerificationStateToDefault];
-                                   }];
+        UIAlertAction *dismissAction = [UIAlertAction actionWithTitle:CommonStrings.dismissButton
+                                                                style:UIAlertActionStyleCancel
+                                                              handler:^(UIAlertAction *_Nonnull action) {
+                                                                  [weakSelf resetVerificationStateToDefault];
+                                                              }];
         [actionSheetController addAction:dismissAction];
 
         [self presentViewController:actionSheetController animated:YES completion:nil];
@@ -2950,9 +2948,8 @@ typedef enum : NSUInteger {
                                      @"Alert body when picking a document fails because user picked a directory/bundle")
                       preferredStyle:UIAlertControllerStyleAlert];
 
-        UIAlertAction *dismissAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"DISMISS_BUTTON_TEXT", nil)
-                                                                style:UIAlertActionStyleCancel
-                                                              handler:nil];
+        UIAlertAction *dismissAction =
+            [UIAlertAction actionWithTitle:CommonStrings.dismissButton style:UIAlertActionStyleCancel handler:nil];
         [alertController addAction:dismissAction];
 
         dispatch_async(dispatch_get_main_queue(), ^{
@@ -2978,9 +2975,8 @@ typedef enum : NSUInteger {
                              message:nil
                       preferredStyle:UIAlertControllerStyleAlert];
 
-        UIAlertAction *dismissAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"DISMISS_BUTTON_TEXT", nil)
-                                                                style:UIAlertActionStyleCancel
-                                                              handler:nil];
+        UIAlertAction *dismissAction =
+            [UIAlertAction actionWithTitle:CommonStrings.dismissButton style:UIAlertActionStyleCancel handler:nil];
         [alertController addAction:dismissAction];
 
         dispatch_async(dispatch_get_main_queue(), ^{

Signal/src/ViewControllers/ExperienceUpgradesPageViewController.swift

@@ -194,7 +194,7 @@ class ExperienceUpgradesPageViewController: UIViewController, UIPageViewControll
         // Dismiss button
         let dismissButton = UIButton()
         view.addSubview(dismissButton)
-        dismissButton.setTitle(NSLocalizedString("DISMISS_BUTTON_TEXT", comment: ""), for: .normal)
+        dismissButton.setTitle(CommonStrings.dismissButton, for: .normal)
         dismissButton.setTitleColor(UIColor.white, for: .normal)
         dismissButton.isUserInteractionEnabled = true
         dismissButton.addTarget(self, action:#selector(didTapDismissButton), for: .touchUpInside)

Signal/src/ViewControllers/FingerprintViewScanController.m

@@ -189,7 +189,6 @@ NS_ASSUME_NONNULL_BEGIN
     DDLogInfo(@"%@ Successfully verified safety numbers.", tag);
 
     NSString *successTitle = NSLocalizedString(@"SUCCESSFUL_VERIFICATION_TITLE", nil);
-    NSString *dismissText = NSLocalizedString(@"DISMISS_BUTTON_TEXT", nil);
     NSString *descriptionFormat = NSLocalizedString(
         @"SUCCESSFUL_VERIFICATION_DESCRIPTION", @"Alert body after verifying privacy with {{other user's name}}");
     NSString *successDescription = [NSString stringWithFormat:descriptionFormat, contactName];
@@ -209,7 +208,7 @@ NS_ASSUME_NONNULL_BEGIN
                                   [viewController dismissViewControllerAnimated:true completion:nil];
                               }]];
     UIAlertAction *dismissAction =
-        [UIAlertAction actionWithTitle:dismissText
+        [UIAlertAction actionWithTitle:CommonStrings.dismissButton
                                  style:UIAlertActionStyleDefault
                                handler:^(UIAlertAction *action) {
                                    [viewController dismissViewControllerAnimated:true completion:nil];

Signal/src/ViewControllers/InviteFlow.swift

@@ -1,5 +1,6 @@
-//  Created by Michael Kirk on 11/18/16.
-//  Copyright © 2016 Open Whisper Systems. All rights reserved.
+//
+//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
+//
 
 import Foundation
 import Social
@@ -31,7 +32,7 @@ class InviteFlow: NSObject, MFMessageComposeViewControllerDelegate, MFMailCompos
         super.init()
 
         actionSheetController.addAction(dismissAction())
-        
+
         if #available(iOS 9.0, *) {
             if let messageAction = messageAction() {
                 actionSheetController.addAction(messageAction)
@@ -72,7 +73,7 @@ class InviteFlow: NSObject, MFMessageComposeViewControllerDelegate, MFMailCompos
         twitterViewController.add(#imageLiteral(resourceName: "twitter_sharing_image"))
 
         let tweetTitle = NSLocalizedString("SHARE_ACTION_TWEET", comment:"action sheet item")
-        return UIAlertAction(title: tweetTitle, style: .default) { action in
+        return UIAlertAction(title: tweetTitle, style: .default) { _ in
             Logger.debug("\(self.TAG) Chose tweet")
 
             self.presentingViewController.present(twitterViewController, animated: true, completion: nil)
@@ -80,7 +81,7 @@ class InviteFlow: NSObject, MFMessageComposeViewControllerDelegate, MFMailCompos
     }
 
     func dismissAction() -> UIAlertAction {
-        return UIAlertAction(title: NSLocalizedString("DISMISS_BUTTON_TEXT", comment:""), style: .cancel)
+        return UIAlertAction(title: CommonStrings.dismissButton, style: .cancel)
     }
 
     // MARK: ContactsPickerDelegate
@@ -134,10 +135,10 @@ class InviteFlow: NSObject, MFMessageComposeViewControllerDelegate, MFMailCompos
         }
 
         let messageTitle = NSLocalizedString("SHARE_ACTION_MESSAGE", comment: "action sheet item to open native messages app")
-        return UIAlertAction(title: messageTitle, style: .default) { action in
+        return UIAlertAction(title: messageTitle, style: .default) { _ in
             Logger.debug("\(self.TAG) Chose message.")
             self.channel = .message
-            let picker = ContactsPicker(delegate: self, multiSelection: true, subtitleCellType: .phoneNumber)            
+            let picker = ContactsPicker(delegate: self, multiSelection: true, subtitleCellType: .phoneNumber)
             let navigationController = UINavigationController(rootViewController: picker)
             self.presentingViewController.present(navigationController, animated: true)
         }
@@ -173,7 +174,7 @@ class InviteFlow: NSObject, MFMessageComposeViewControllerDelegate, MFMailCompos
         switch result {
         case .failed:
             let warning = UIAlertController(title: nil, message: NSLocalizedString("SEND_INVITE_FAILURE", comment:"Alert body after invite failed"), preferredStyle: .alert)
-            warning.addAction(UIAlertAction(title: NSLocalizedString("DISMISS_BUTTON_TEXT", comment:""), style: .default, handler: nil))
+            warning.addAction(UIAlertAction(title: CommonStrings.dismissButton, style: .default, handler: nil))
             self.presentingViewController.present(warning, animated: true, completion: nil)
         case .sent:
             Logger.debug("\(self.TAG) user successfully invited their friends via SMS.")
@@ -192,7 +193,7 @@ class InviteFlow: NSObject, MFMessageComposeViewControllerDelegate, MFMailCompos
         }
 
         let mailActionTitle = NSLocalizedString("SHARE_ACTION_MAIL", comment: "action sheet item to open native mail app")
-        return UIAlertAction(title: mailActionTitle, style: .default) { action in
+        return UIAlertAction(title: mailActionTitle, style: .default) { _ in
             Logger.debug("\(self.TAG) Chose mail.")
             self.channel = .mail
 
@@ -216,8 +217,8 @@ class InviteFlow: NSObject, MFMessageComposeViewControllerDelegate, MFMailCompos
         mailComposeViewController.setMessageBody(body, isHTML: false)
 
         self.presentingViewController.dismiss(animated: true) {
-            self.presentingViewController.navigationController?.present(mailComposeViewController, animated:true)  {
-                UIUtil.applySignalAppearence();
+            self.presentingViewController.navigationController?.present(mailComposeViewController, animated:true) {
+                UIUtil.applySignalAppearence()
             }
         }
     }
@@ -230,7 +231,7 @@ class InviteFlow: NSObject, MFMessageComposeViewControllerDelegate, MFMailCompos
         switch result {
         case .failed:
             let warning = UIAlertController(title: nil, message: NSLocalizedString("SEND_INVITE_FAILURE", comment:"Alert body after invite failed"), preferredStyle: .alert)
-            warning.addAction(UIAlertAction(title: NSLocalizedString("DISMISS_BUTTON_TEXT", comment:""), style: .default, handler: nil))
+            warning.addAction(UIAlertAction(title: CommonStrings.dismissButton, style: .default, handler: nil))
             self.presentingViewController.present(warning, animated: true, completion: nil)
         case .sent:
             Logger.debug("\(self.TAG) user successfully invited their friends via mail.")

Signal/src/ViewControllers/OWSLinkedDevicesTableViewController.m

@@ -5,6 +5,7 @@
 #import "OWSLinkedDevicesTableViewController.h"
 #import "OWSDeviceTableViewCell.h"
 #import "OWSLinkDeviceViewController.h"
+#import "Signal-Swift.h"
 #import "UIViewController+CameraPermissions.h"
 #import <SignalServiceKit/NSTimer+OWS.h>
 #import <SignalServiceKit/OWSDevice.h>
@@ -166,10 +167,9 @@ int const OWSLinkedDevicesTableViewControllerSectionAddDevice = 1;
                                                                     }];
                 [alertController addAction:retryAction];
 
-                NSString *dismissTitle
-                    = NSLocalizedString(@"DISMISS_BUTTON_TEXT", @"Generic short text for button to dismiss a dialog");
-                UIAlertAction *dismissAction =
-                    [UIAlertAction actionWithTitle:dismissTitle style:UIAlertActionStyleCancel handler:nil];
+                UIAlertAction *dismissAction = [UIAlertAction actionWithTitle:CommonStrings.dismissButton
+                                                                        style:UIAlertActionStyleCancel
+                                                                      handler:nil];
                 [alertController addAction:dismissAction];
 
                 dispatch_async(dispatch_get_main_queue(), ^{

Signal/src/ViewControllers/RegistrationViewController.m

@@ -379,8 +379,7 @@ NSString *const kKeychainKey_LastRegisteredPhoneNumber = @"kKeychainKey_LastRegi
 - (void)presentInvalidCountryCodeError {
     [OWSAlerts showAlertWithTitle:NSLocalizedString(@"REGISTER_CC_ERR_ALERT_VIEW_TITLE", @"")
                           message:NSLocalizedString(@"REGISTER_CC_ERR_ALERT_VIEW_MESSAGE", @"")
-                      buttonTitle:NSLocalizedString(
-                                      @"DISMISS_BUTTON_TEXT", @"Generic short text for button to dismiss a dialog")];
+                      buttonTitle:CommonStrings.dismissButton];
 }
 
 #pragma mark - CountryCodeViewControllerDelegate

Signal/src/call/CallAudioService.swift

@@ -5,6 +5,71 @@
 import Foundation
 import AVFoundation
 
+public let CallAudioServiceSessionChanged = Notification.Name("CallAudioServiceSessionChanged")
+
+struct AudioSource: Hashable {
+
+    let image: UIImage
+    let localizedName: String
+    let portDescription: AVAudioSessionPortDescription?
+    let isBuiltInSpeaker: Bool
+
+    init(localizedName: String, image: UIImage, isBuiltInSpeaker: Bool, portDescription: AVAudioSessionPortDescription? = nil) {
+        self.localizedName = localizedName
+        self.image = image
+        self.isBuiltInSpeaker = isBuiltInSpeaker
+        self.portDescription = portDescription
+    }
+
+    init(portDescription: AVAudioSessionPortDescription) {
+        self.init(localizedName: portDescription.portName,
+                  image:#imageLiteral(resourceName: "button_phone_white"), // TODO
+                  isBuiltInSpeaker: false,
+                  portDescription: portDescription)
+    }
+
+    // Speakerphone is handled separately from the other audio routes as it doesn't appear as an "input"
+    static var builtInSpeaker: AudioSource {
+        return self.init(localizedName: NSLocalizedString("AUDIO_ROUTE_BUILT_IN_SPEAKER", comment: "action sheet button title to enable built in speaker during a call"),
+                         image: #imageLiteral(resourceName: "button_phone_white"), //TODO
+                         isBuiltInSpeaker: true)
+    }
+
+    // MARK: Hashable
+
+    static func ==(lhs: AudioSource, rhs: AudioSource) -> Bool {
+        // Simply comparing the `portDescription` vs the `portDescription.uid`
+        // caused multiple instances of the built in mic to turn up in a set.
+        if lhs.isBuiltInSpeaker && rhs.isBuiltInSpeaker {
+            return true
+        }
+
+        if lhs.isBuiltInSpeaker || rhs.isBuiltInSpeaker {
+            return false
+        }
+
+        guard let lhsPortDescription = lhs.portDescription else {
+            owsFail("only the built in speaker should lack a port description")
+            return false
+        }
+
+        guard let rhsPortDescription = rhs.portDescription else {
+            owsFail("only the built in speaker should lack a port description")
+            return false
+        }
+
+        return lhsPortDescription.uid == rhsPortDescription.uid
+    }
+
+    var hashValue: Int {
+        guard let portDescription = self.portDescription else {
+            assert(self.isBuiltInSpeaker)
+            return "Built In Speaker".hashValue
+        }
+        return portDescription.uid.hash
+    }
+}
+
 @objc class CallAudioService: NSObject, CallObserver {
 
     private let TAG = "[CallAudioService]"
@@ -74,10 +139,19 @@ import AVFoundation
         Logger.verbose("\(TAG) in \(#function) is no-op")
     }
 
-    internal func speakerphoneDidChange(call: SignalCall, isEnabled: Bool) {
+    internal func audioSourceDidChange(call: SignalCall, audioSource: AudioSource?) {
         AssertIsOnMainThread()
 
         ensureProperAudioSession(call: call)
+
+        // It's importent to set preferred input *after* ensuring properAudioSession
+        // because some sources are only valid for certain categories.
+        let session = AVAudioSession.sharedInstance()
+        do {
+            try session.setPreferredInput(audioSource?.portDescription)
+        } catch {
+            owsFail("\(TAG) setPreferredInput in \(#function) failed with error: \(error)")
+        }
     }
 
     internal func hasLocalVideoDidChange(call: SignalCall, hasLocalVideo: Bool) {
@@ -98,14 +172,17 @@ import AVFoundation
             setAudioSession(category: AVAudioSessionCategorySoloAmbient,
                             mode: AVAudioSessionModeDefault)
         } else if call.hasLocalVideo {
-            // Auto-enable speakerphone when local video is enabled.
+            // Don't allow bluetooth for local video if speakerphone has been explicitly chosen by the user.
+            let options: AVAudioSessionCategoryOptions = call.isSpeakerphoneEnabled ? [.defaultToSpeaker] : [.defaultToSpeaker, .allowBluetooth]
+
             setAudioSession(category: AVAudioSessionCategoryPlayAndRecord,
                             mode: AVAudioSessionModeVideoChat,
-                            options: [.defaultToSpeaker, .allowBluetooth])
+                            options: options)
         } else if call.isSpeakerphoneEnabled {
+            // Ensure no bluetooth if user has specified speakerphone
             setAudioSession(category: AVAudioSessionCategoryPlayAndRecord,
                             mode: AVAudioSessionModeVoiceChat,
-                            options: [.defaultToSpeaker, .allowBluetooth])
+                            options: [.defaultToSpeaker])
         } else {
             setAudioSession(category: AVAudioSessionCategoryPlayAndRecord,
                             mode: AVAudioSessionModeVoiceChat,
@@ -308,11 +385,61 @@ import AVFoundation
         AudioServicesPlaySystemSound(kSystemSoundID_Vibrate)
     }
 
+    // MARK - AudioSession MGMT
+    // TODO move this to CallAudioSession?
+
+    // Note this method is sensitive to the current audio session configuration.
+    // Specifically if you call it while speakerphone is enabled you won't see 
+    // any connected bluetooth routes.
+    var availableInputs: [AudioSource] {
+        let session = AVAudioSession.sharedInstance()
+
+        guard let availableInputs = session.availableInputs else {
+            // I'm not sure when this would happen.
+            owsFail("No available inputs or inputs not ready")
+            return [AudioSource.builtInSpeaker]
+        }
+
+        Logger.info("\(TAG) in \(#function) availableInputs: \(availableInputs)")
+        return [AudioSource.builtInSpeaker] + availableInputs.map { portDescription in
+            return AudioSource(portDescription: portDescription)
+        }
+    }
+
+    func currentAudioSource(call: SignalCall) -> AudioSource? {
+        if let audioSource = call.audioSource {
+            return audioSource
+        }
+
+        // Before the user has specified an audio source on the call, we rely on the existing
+        // system state to determine the current audio source.
+        // If a bluetooth is connected, this will be bluetooth, otherwise
+        // this will be the receiver.
+        let session = AVAudioSession.sharedInstance()
+        guard let portDescription = session.currentRoute.inputs.first else {
+            return nil
+        }
+
+        return AudioSource(portDescription: portDescription)
+    }
+
+    public func setPreferredInput(call: SignalCall, audioSource: AudioSource?) {
+        let session = AVAudioSession.sharedInstance()
+        do {
+            Logger.debug("\(TAG) in \(#function) audioSource: \(String(describing: audioSource))")
+            try session.setPreferredInput(audioSource?.portDescription)
+        } catch {
+            owsFail("\(TAG) failed with error: \(error)")
+        }
+        self.ensureProperAudioSession(call: call)
+    }
+
     private func setAudioSession(category: String,
                                  mode: String? = nil,
                                  options: AVAudioSessionCategoryOptions = AVAudioSessionCategoryOptions(rawValue: 0)) {
 
         let session = AVAudioSession.sharedInstance()
+        var audioSessionChanged = false
         do {
             if #available(iOS 10.0, *), let mode = mode {
                 let oldCategory = session.category
@@ -323,6 +450,8 @@ import AVFoundation
                     return
                 }
 
+                audioSessionChanged = true
+
                 if oldCategory != category {
                     Logger.debug("\(self.TAG) audio session changed category: \(oldCategory) -> \(category) ")
                 }
@@ -342,6 +471,8 @@ import AVFoundation
                     return
                 }
 
+                audioSessionChanged = true
+
                 if oldCategory != category {
                     Logger.debug("\(self.TAG) audio session changed category: \(oldCategory) -> \(category) ")
                 }
@@ -355,5 +486,10 @@ import AVFoundation
             let message = "\(self.TAG) in \(#function) failed to set category: \(category) mode: \(String(describing: mode)), options: \(options) with error: \(error)"
             owsFail(message)
         }
+
+        if audioSessionChanged {
+            Logger.info("\(TAG) in \(#function)")
+            NotificationCenter.default.post(name: CallAudioServiceSessionChanged, object: nil)
+        }
     }
 }

Signal/src/call/CallService.swift

@@ -1442,7 +1442,7 @@ protocol CallServiceObserver: class {
         // Do nothing
     }
 
-    internal func speakerphoneDidChange(call: SignalCall, isEnabled: Bool) {
+    internal func audioSourceDidChange(call: SignalCall, audioSource: AudioSource?) {
         AssertIsOnMainThread()
         // Do nothing
     }

Signal/src/call/SignalCall.swift

@@ -26,7 +26,7 @@ protocol CallObserver: class {
     func stateDidChange(call: SignalCall, state: CallState)
     func hasLocalVideoDidChange(call: SignalCall, hasLocalVideo: Bool)
     func muteDidChange(call: SignalCall, isMuted: Bool)
-    func speakerphoneDidChange(call: SignalCall, isEnabled: Bool)
+    func audioSourceDidChange(call: SignalCall, audioSource: AudioSource?)
 }
 
 /**
@@ -104,18 +104,25 @@ protocol CallObserver: class {
         }
     }
 
-    var isSpeakerphoneEnabled = false {
+    var audioSource: AudioSource? = nil {
         didSet {
             AssertIsOnMainThread()
-
-            Logger.debug("\(TAG) isSpeakerphoneEnabled changed: \(oldValue) -> \(self.isSpeakerphoneEnabled)")
+            Logger.debug("\(TAG) audioSource changed: \(String(describing:oldValue)) -> \(String(describing: audioSource))")
 
             for observer in observers {
-                observer.value?.speakerphoneDidChange(call: self, isEnabled: isSpeakerphoneEnabled)
+                observer.value?.audioSourceDidChange(call: self, audioSource: audioSource)
             }
         }
     }
 
+    var isSpeakerphoneEnabled: Bool {
+        guard let audioSource = self.audioSource else {
+            return false
+        }
+
+        return audioSource.isBuiltInSpeaker
+    }
+
     var isOnHold = false
 
     var connectedDate: NSDate?

Signal/src/call/UserInterface/CallUIAdapter.swift

@@ -80,7 +80,7 @@ extension CallUIAdaptee {
     let TAG = "[CallUIAdapter]"
     private let adaptee: CallUIAdaptee
     private let contactsManager: OWSContactsManager
-    private let audioService: CallAudioService
+    internal let audioService: CallAudioService
 
     required init(callService: CallService, contactsManager: OWSContactsManager, notificationsAdapter: CallNotificationsAdapter) {
         AssertIsOnMainThread()
@@ -207,13 +207,13 @@ extension CallUIAdaptee {
         adaptee.setHasLocalVideo(call: call, hasLocalVideo: hasLocalVideo)
     }
 
-    internal func setIsSpeakerphoneEnabled(call: SignalCall, isEnabled: Bool) {
+    internal func setAudioSource(call: SignalCall, audioSource: AudioSource?) {
         AssertIsOnMainThread()
 
-        // Speakerphone is not handled by CallKit (e.g. there is no CXAction), so we handle it w/o going through the
-        // adaptee, relying on the AudioService CallObserver to put the system in a state consistent with the call's 
+        // AudioSource is not handled by CallKit (e.g. there is no CXAction), so we handle it w/o going through the
+        // adaptee, relying on the AudioService CallObserver to put the system in a state consistent with the call's
         // assigned property.
-        call.isSpeakerphoneEnabled = isEnabled
+        call.audioSource = audioSource
     }
 
     // CallKit handles ringing state on it's own. But for non-call kit we trigger ringing start/stop manually.

Signal/src/util/UIViewController+CameraPermissions.m

@@ -44,7 +44,7 @@ NS_ASSUME_NONNULL_BEGIN
         }];
         [alert addAction:openSettingsAction];
 
-        UIAlertAction *dismissAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"DISMISS_BUTTON_TEXT", nil)
+        UIAlertAction *dismissAction = [UIAlertAction actionWithTitle:CommonStrings.dismissButton
                                                                 style:UIAlertActionStyleCancel
                                                               handler:^(UIAlertAction *action) {
                                                                   failureCallback();

Signal/src/views/OWSAlerts.swift

@@ -12,8 +12,7 @@ import Foundation
         let alertTitle = NSLocalizedString("CALL_AUDIO_PERMISSION_TITLE", comment:"Alert title when calling and permissions for microphone are missing")
         let alertMessage = NSLocalizedString("CALL_AUDIO_PERMISSION_MESSAGE", comment:"Alert message when calling and permissions for microphone are missing")
         let alertController = UIAlertController(title: alertTitle, message: alertMessage, preferredStyle: .alert)
-        let dismiss = NSLocalizedString("DISMISS_BUTTON_TEXT", comment: "Generic short text for button to dismiss a dialog")
-        let dismissAction = UIAlertAction(title: dismiss, style: .cancel)
+        let dismissAction = UIAlertAction(title: CommonStrings.dismissButton, style: .cancel)
         let settingsString = NSLocalizedString("OPEN_SETTINGS_BUTTON", comment: "Button text which opens the settings app")
         let settingsAction = UIAlertAction(title: settingsString, style: .default) { _ in
             UIApplication.shared.openSystemSettings()

Signal/translations/en.lproj/Localizable.strings

@@ -139,6 +139,9 @@
 /* Short text label for a voice message attachment, used for thread preview and on lockscreen */
 "ATTACHMENT_TYPE_VOICE_MESSAGE" = "Voice Message";
 
+/* action sheet button title to enable built in speaker during a call */
+"AUDIO_ROUTE_BUILT_IN_SPEAKER" = "Built in Speaker";
+
 /* An explanation of the consequences of blocking another user. */
 "BLOCK_BEHAVIOR_EXPLANATION" = "Blocked users will not be able to call you or send you messages.";
 
@@ -376,7 +379,7 @@
 /* Accessibility label for disappearing messages */
 "DISAPPEARING_MESSAGES_LABEL" = "Disappearing messages settings";
 
-/* Generic short text for button to dismiss a dialog */
+/* Short text to dismiss current modal / actionsheet / screen */
 "DISMISS_BUTTON_TEXT" = "Dismiss";
 
 /* Section title for the 'domain fronting country' view. */