Update iOS AppRTCDemo to use level controller.

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

 /*
  *  Copyright 2015 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 103 matching lines @@
 @end
 
 @implementation ARDMainView {
   UILabel *_appLabel;
   ARDRoomTextField *_roomText;
   UILabel *_callOptionsLabel;
   UISwitch *_audioOnlySwitch;
   UILabel *_audioOnlyLabel;
   UISwitch *_aecdumpSwitch;
   UILabel *_aecdumpLabel;
+  UISwitch *_levelControlSwitch;
+  UILabel *_levelControlLabel;
   UISwitch *_loopbackSwitch;
   UILabel *_loopbackLabel;
   UISwitch *_useManualAudioSwitch;
   UILabel *_useManualAudioLabel;
   UIButton *_startCallButton;
   UIButton *_audioLoopButton;
 }
 
 @synthesize delegate = _delegate;
 @synthesize isAudioLoopPlaying = _isAudioLoopPlaying;
@@ skipping 46 matching lines @@
     [_aecdumpSwitch sizeToFit];
     [self addSubview:_aecdumpSwitch];
 
     _aecdumpLabel = [[UILabel alloc] initWithFrame:CGRectZero];
     _aecdumpLabel.text = @"Create AecDump";
     _aecdumpLabel.font = controlFont;
     _aecdumpLabel.textColor = controlFontColor;
     [_aecdumpLabel sizeToFit];
     [self addSubview:_aecdumpLabel];
 
+    _levelControlSwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
+    [_levelControlSwitch sizeToFit];
+    [self addSubview:_levelControlSwitch];
+
+    _levelControlLabel = [[UILabel alloc] initWithFrame:CGRectZero];
+    _levelControlLabel.text = @"Use level controller";
+    _levelControlLabel.font = controlFont;
+    _levelControlLabel.textColor = controlFontColor;
+    [_levelControlLabel sizeToFit];
+    [self addSubview:_levelControlLabel];
+
     _useManualAudioSwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
     [_useManualAudioSwitch sizeToFit];
     _useManualAudioSwitch.on = YES;
     [self addSubview:_useManualAudioSwitch];
 
     _useManualAudioLabel = [[UILabel alloc] initWithFrame:CGRectZero];
     _useManualAudioLabel.text = @"Use manual audio config";
     _useManualAudioLabel.font = controlFont;
     _useManualAudioLabel.textColor = controlFontColor;
     [_useManualAudioLabel sizeToFit];
@@ skipping 92 matching lines @@
   CGRect aecdumpModeRect = CGRectMake(kCallControlMargin * 3,
                                       aecdumpModeTop,
                                       _aecdumpSwitch.frame.size.width,
                                       _aecdumpSwitch.frame.size.height);
   _aecdumpSwitch.frame = aecdumpModeRect;
   CGFloat aecdumpModeLabelCenterX = CGRectGetMaxX(aecdumpModeRect) +
       kCallControlMargin + _aecdumpLabel.frame.size.width / 2;
   _aecdumpLabel.center = CGPointMake(aecdumpModeLabelCenterX,
                                      CGRectGetMidY(aecdumpModeRect));
 
+  CGFloat levelControlModeTop =
+       CGRectGetMaxY(_aecdumpSwitch.frame) + kCallControlMargin;
+  CGRect levelControlModeRect = CGRectMake(kCallControlMargin * 3,
+                                           levelControlModeTop,
+                                           _levelControlSwitch.frame.size.width,
+                                           _levelControlSwitch.frame.size.height);
+  _levelControlSwitch.frame = levelControlModeRect;
+  CGFloat levelControlModeLabelCenterX = CGRectGetMaxX(levelControlModeRect) +
+      kCallControlMargin + _levelControlLabel.frame.size.width / 2;
+  _levelControlLabel.center = CGPointMake(levelControlModeLabelCenterX,
+                                         CGRectGetMidY(levelControlModeRect));
 
   CGFloat useManualAudioTop =
-      CGRectGetMaxY(_aecdumpSwitch.frame) + kCallControlMargin;
+      CGRectGetMaxY(_levelControlSwitch.frame) + kCallControlMargin;
   CGRect useManualAudioRect =
       CGRectMake(kCallControlMargin * 3,
                  useManualAudioTop,
                  _useManualAudioSwitch.frame.size.width,
                  _useManualAudioSwitch.frame.size.height);
   _useManualAudioSwitch.frame = useManualAudioRect;
   CGFloat useManualAudioLabelCenterX = CGRectGetMaxX(useManualAudioRect) +
       kCallControlMargin + _useManualAudioLabel.frame.size.width / 2;
   _useManualAudioLabel.center =
       CGPointMake(useManualAudioLabelCenterX,
@@ skipping 39 matching lines @@
   // If this is a loopback call, allow a generated room name.
   if (!room.length && _loopbackSwitch.isOn) {
     room = [[NSUUID UUID] UUIDString];
   }
   room = [room stringByReplacingOccurrencesOfString:@"-" withString:@""];
   [_delegate mainView:self
                 didInputRoom:room
                   isLoopback:_loopbackSwitch.isOn
                  isAudioOnly:_audioOnlySwitch.isOn
            shouldMakeAecDump:_aecdumpSwitch.isOn
+       shouldUseLevelControl:_levelControlSwitch.isOn
               useManualAudio:_useManualAudioSwitch.isOn];
 }
 
 @end