Loopback mode for AppRTCDemo on iOS.

webrtc/examples/objc/AppRTCDemo/ios/ARDMainView.m

Index: webrtc/examples/objc/AppRTCDemo/ios/ARDMainView.m
diff --git a/webrtc/examples/objc/AppRTCDemo/ios/ARDMainView.m b/webrtc/examples/objc/AppRTCDemo/ios/ARDMainView.m
index 295b59c5541e38852f61e320a48add4aade16e14..98046aa6efe837d01d33759877a70385d1ae75e9 100644
--- a/webrtc/examples/objc/AppRTCDemo/ios/ARDMainView.m
+++ b/webrtc/examples/objc/AppRTCDemo/ios/ARDMainView.m
@@ -18,6 +18,7 @@ static CGFloat const kStatusBarHeight = 20;
 static CGFloat const kRoomTextButtonSize = 40;
 static CGFloat const kRoomTextFieldHeight = 40;
 static CGFloat const kRoomTextFieldMargin = 8;
+static CGFloat const kCallControlMargin = 8;
 static CGFloat const kAppLabelHeight = 20;
 
 @class ARDRoomTextField;
@@ -125,6 +126,9 @@ static CGFloat const kAppLabelHeight = 20;
 @implementation ARDMainView {
   UILabel *_appLabel;
   ARDRoomTextField *_roomText;
+  UISwitch *_audioOnlySwitch;
+  UILabel *_audioOnlyLabel;
+  UIButton *_loopbackButton;
 }
 
 @synthesize delegate = _delegate;
@@ -142,6 +146,28 @@ static CGFloat const kAppLabelHeight = 20;
     _roomText.delegate = self;
     [self addSubview:_roomText];
 
+    _audioOnlySwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
+    [_audioOnlySwitch sizeToFit];
+    [self addSubview:_audioOnlySwitch];
+
+    _audioOnlyLabel = [[UILabel alloc] initWithFrame:CGRectZero];

[tkchin_webrtc, 2015/09/11 17:53:53]

I know it's a demo app, but can we make this prettier? ;-)

[Chuck, 2015/09/28 16:26:40]

Made a couple changes to help the new controls fit in better, if you have other
suggestions I'm happy to make changes.

+    _audioOnlyLabel.text = @"audio only";
+    _audioOnlyLabel.font = [UIFont fontWithName:@"Roboto" size:26];
+    _audioOnlyLabel.textColor = [UIColor colorWithWhite:0 alpha:.6];
+    [_audioOnlyLabel sizeToFit];
+    [self addSubview:_audioOnlyLabel];
+
+    _loopbackButton = [[UIButton alloc] initWithFrame:CGRectZero];
+    [_loopbackButton setTitle:@"loopback call" forState:UIControlStateNormal];
+    _loopbackButton.titleLabel.font = [UIFont fontWithName:@"Roboto" size:26];
+    [_loopbackButton setTitleColor:[UIColor colorWithWhite:0 alpha:.6]
+                          forState:UIControlStateNormal];
+    [_loopbackButton sizeToFit];
+    [_loopbackButton addTarget:self
+                     action:@selector(onLoopback:)
+           forControlEvents:UIControlEventTouchUpInside];
+    [self addSubview:_loopbackButton];
+
     self.backgroundColor = [UIColor whiteColor];
   }
   return self;
@@ -156,13 +182,49 @@ static CGFloat const kAppLabelHeight = 20;
                                roomTextWidth,
                                roomTextHeight);
   _appLabel.center = CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));
+

[tkchin_webrtc, 2015/09/11 17:53:53]

nit: fix indentation + remove unneeded line breaks

[Chuck, 2015/09/28 16:26:40]

Done.

+
+  CGFloat audioOnlyTop =
+      CGRectGetMaxY(_roomText.frame) + kCallControlMargin * 2;
+  CGRect audioOnlyRect = CGRectMake(kCallControlMargin,
+                                   audioOnlyTop,
+                                   _audioOnlySwitch.frame.size.width,
+                                    _audioOnlySwitch.frame.size.height);
+
+  _audioOnlySwitch.frame = audioOnlyRect;
+
+  CGFloat audioOnlyLabelCenterX = CGRectGetMaxX(audioOnlyRect) +
+      kCallControlMargin + _audioOnlyLabel.frame.size.width / 2;
+
+  _audioOnlyLabel.center = CGPointMake(audioOnlyLabelCenterX,
+                                      CGRectGetMidY(audioOnlyRect));
+
+  CGFloat loopbackTop = CGRectGetMaxY(audioOnlyRect) + kCallControlMargin * 2;
+  _loopbackButton.frame = CGRectMake(kCallControlMargin * 2,
+                                     loopbackTop,
+                                     _loopbackButton.frame.size.width,
+                                     _loopbackButton.frame.size.height);
 }
 
 #pragma mark - ARDRoomTextFieldDelegate
 
 - (void)roomTextField:(ARDRoomTextField *)roomTextField
          didInputRoom:(NSString *)room {
-  [_delegate mainView:self didInputRoom:room];
+  [_delegate mainView:self
+         didInputRoom:room
+           isLoopback:NO
+          isAudioOnly:_audioOnlySwitch.isOn];
+}
+
+#pragma mark - Private
+
+- (void)onLoopback:(id)sender {
+  NSString *room = [[NSUUID UUID] UUIDString];
+  room = [room stringByReplacingOccurrencesOfString:@"-" withString:@""];
+  [_delegate mainView:self
+         didInputRoom:room
+           isLoopback:YES
+          isAudioOnly:_audioOnlySwitch.isOn];
 }
 
 @end