webrtc/examples/objc/AppRTCMobile/ios/ARDMainView.m - src - Git at Google

 /*
  *  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.
  */

 #import "ARDMainView.h"

 #import "UIImage+ARDUtilities.h"

 static CGFloat const kRoomTextFieldHeight = 40;
 static CGFloat const kRoomTextFieldMargin = 8;
 static CGFloat const kCallControlMargin = 8;

 // Helper view that contains a text field and a clear button.
 @interface ARDRoomTextField : UIView <UITextFieldDelegate>
 @property(nonatomic, readonly) NSString *roomText;
 @end

 @implementation ARDRoomTextField {
   UITextField *_roomText;
 }

 - (instancetype)initWithFrame:(CGRect)frame {
   if (self = [super initWithFrame:frame]) {
     _roomText = [[UITextField alloc] initWithFrame:CGRectZero];
     _roomText.borderStyle = UITextBorderStyleNone;
     _roomText.font = [UIFont fontWithName:@"Roboto" size:12];
     _roomText.placeholder = @"Room name";
     _roomText.autocorrectionType = UITextAutocorrectionTypeNo;
     _roomText.autocapitalizationType = UITextAutocapitalizationTypeNone;
     _roomText.clearButtonMode = UITextFieldViewModeAlways;
     _roomText.delegate = self;
     [self addSubview:_roomText];

     // Give rounded corners and a light gray border.
     self.layer.borderWidth = 1;
     self.layer.borderColor = [[UIColor lightGrayColor] CGColor];
     self.layer.cornerRadius = 2;
   }
   return self;
 }

 - (void)layoutSubviews {
   _roomText.frame =
       CGRectMake(kRoomTextFieldMargin, 0, CGRectGetWidth(self.bounds) - kRoomTextFieldMargin,
                  kRoomTextFieldHeight);
 }

 - (CGSize)sizeThatFits:(CGSize)size {
   size.height = kRoomTextFieldHeight;
   return size;
 }

 - (NSString *)roomText {
   return _roomText.text;
 }

 #pragma mark - UITextFieldDelegate

 - (BOOL)textFieldShouldReturn:(UITextField *)textField {
   // There is no other control that can take focus, so manually resign focus
   // when return (Join) is pressed to trigger |textFieldDidEndEditing|.
   [textField resignFirstResponder];
   return YES;
 }

 @end

 @implementation ARDMainView {
   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;

 - (instancetype)initWithFrame:(CGRect)frame {
   if (self = [super initWithFrame:frame]) {
     _roomText = [[ARDRoomTextField alloc] initWithFrame:CGRectZero];
     [self addSubview:_roomText];

     UIFont *controlFont = [UIFont fontWithName:@"Roboto" size:20];
     UIColor *controlFontColor = [UIColor colorWithWhite:0 alpha:.6];

     _callOptionsLabel = [[UILabel alloc] initWithFrame:CGRectZero];
     _callOptionsLabel.text = @"Call Options";
     _callOptionsLabel.font = controlFont;
     _callOptionsLabel.textColor = controlFontColor;
     [_callOptionsLabel sizeToFit];
     [self addSubview:_callOptionsLabel];

     _audioOnlySwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
     [_audioOnlySwitch sizeToFit];
     [self addSubview:_audioOnlySwitch];

     _audioOnlyLabel = [[UILabel alloc] initWithFrame:CGRectZero];
     _audioOnlyLabel.text = @"Audio only";
     _audioOnlyLabel.font = controlFont;
     _audioOnlyLabel.textColor = controlFontColor;
     [_audioOnlyLabel sizeToFit];
     [self addSubview:_audioOnlyLabel];

     _loopbackSwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
     [_loopbackSwitch sizeToFit];
     [self addSubview:_loopbackSwitch];

     _loopbackLabel = [[UILabel alloc] initWithFrame:CGRectZero];
     _loopbackLabel.text = @"Loopback mode";
     _loopbackLabel.font = controlFont;
     _loopbackLabel.textColor = controlFontColor;
     [_loopbackLabel sizeToFit];
     [self addSubview:_loopbackLabel];

     _aecdumpSwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
     [_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];
     [self addSubview:_useManualAudioLabel];

     _startCallButton = [UIButton buttonWithType:UIButtonTypeSystem];
     [_startCallButton setTitle:@"Start call"
                       forState:UIControlStateNormal];
     _startCallButton.titleLabel.font = controlFont;
     [_startCallButton sizeToFit];
     [_startCallButton addTarget:self
                          action:@selector(onStartCall:)
                forControlEvents:UIControlEventTouchUpInside];
     [self addSubview:_startCallButton];

     // Used to test what happens to sounds when calls are in progress.
     _audioLoopButton = [UIButton buttonWithType:UIButtonTypeSystem];
     _audioLoopButton.titleLabel.font = controlFont;
     [self updateAudioLoopButton];
     [_audioLoopButton addTarget:self
                          action:@selector(onToggleAudioLoop:)
                forControlEvents:UIControlEventTouchUpInside];
     [self addSubview:_audioLoopButton];

     self.backgroundColor = [UIColor whiteColor];
   }
   return self;
 }

 - (void)setIsAudioLoopPlaying:(BOOL)isAudioLoopPlaying {
   if (_isAudioLoopPlaying == isAudioLoopPlaying) {
     return;
   }
   _isAudioLoopPlaying = isAudioLoopPlaying;
   [self updateAudioLoopButton];
 }

 - (void)layoutSubviews {
   CGRect bounds = self.bounds;
   CGFloat roomTextWidth = bounds.size.width - 2 * kRoomTextFieldMargin;
   CGFloat roomTextHeight = [_roomText sizeThatFits:bounds.size].height;
   _roomText.frame =
       CGRectMake(kRoomTextFieldMargin, kRoomTextFieldMargin, roomTextWidth, roomTextHeight);

   CGFloat callOptionsLabelTop =
       CGRectGetMaxY(_roomText.frame) + kCallControlMargin * 4;
   _callOptionsLabel.frame = CGRectMake(kCallControlMargin,
                                        callOptionsLabelTop,
                                        _callOptionsLabel.frame.size.width,
                                        _callOptionsLabel.frame.size.height);

   CGFloat audioOnlyTop =
       CGRectGetMaxY(_callOptionsLabel.frame) + kCallControlMargin * 2;
   CGRect audioOnlyRect = CGRectMake(kCallControlMargin * 3,
                                     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 loopbackModeTop =
       CGRectGetMaxY(_audioOnlySwitch.frame) + kCallControlMargin;
   CGRect loopbackModeRect = CGRectMake(kCallControlMargin * 3,
                                        loopbackModeTop,
                                        _loopbackSwitch.frame.size.width,
                                        _loopbackSwitch.frame.size.height);
   _loopbackSwitch.frame = loopbackModeRect;
   CGFloat loopbackModeLabelCenterX = CGRectGetMaxX(loopbackModeRect) +
       kCallControlMargin + _loopbackLabel.frame.size.width / 2;
   _loopbackLabel.center = CGPointMake(loopbackModeLabelCenterX,
                                       CGRectGetMidY(loopbackModeRect));

   CGFloat aecdumpModeTop =
       CGRectGetMaxY(_loopbackSwitch.frame) + kCallControlMargin;
   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(_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,
                   CGRectGetMidY(useManualAudioRect));

   CGFloat audioLoopTop =
      CGRectGetMaxY(useManualAudioRect) + kCallControlMargin * 3;
   _audioLoopButton.frame = CGRectMake(kCallControlMargin,
                                       audioLoopTop,
                                       _audioLoopButton.frame.size.width,
                                       _audioLoopButton.frame.size.height);

   CGFloat startCallTop =
       CGRectGetMaxY(_audioLoopButton.frame) + kCallControlMargin * 3;
   _startCallButton.frame = CGRectMake(kCallControlMargin,
                                       startCallTop,
                                       _startCallButton.frame.size.width,
                                       _startCallButton.frame.size.height);
 }

 #pragma mark - Private

 - (void)updateAudioLoopButton {
   if (_isAudioLoopPlaying) {
     [_audioLoopButton setTitle:@"Stop sound"
                       forState:UIControlStateNormal];
     [_audioLoopButton sizeToFit];
   } else {
     [_audioLoopButton setTitle:@"Play sound"
                       forState:UIControlStateNormal];
     [_audioLoopButton sizeToFit];
   }
 }

 - (void)onToggleAudioLoop:(id)sender {
   [_delegate mainViewDidToggleAudioLoop:self];
 }

 - (void)onStartCall:(id)sender {
   [_delegate mainView:self
                didInputRoom:_roomText.roomText
                  isLoopback:_loopbackSwitch.isOn
                 isAudioOnly:_audioOnlySwitch.isOn
           shouldMakeAecDump:_aecdumpSwitch.isOn
       shouldUseLevelControl:_levelControlSwitch.isOn
              useManualAudio:_useManualAudioSwitch.isOn];
 }

 @end
	/*
	* 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.
	*/

	#import "ARDMainView.h"

	#import "UIImage+ARDUtilities.h"

	static CGFloat const kRoomTextFieldHeight = 40;
	static CGFloat const kRoomTextFieldMargin = 8;
	static CGFloat const kCallControlMargin = 8;

	// Helper view that contains a text field and a clear button.
	@interface ARDRoomTextField : UIView <UITextFieldDelegate>
	@property(nonatomic, readonly) NSString *roomText;
	@end

	@implementation ARDRoomTextField {
	UITextField *_roomText;
	}

	- (instancetype)initWithFrame:(CGRect)frame {
	if (self = [super initWithFrame:frame]) {
	_roomText = [[UITextField alloc] initWithFrame:CGRectZero];
	_roomText.borderStyle = UITextBorderStyleNone;
	_roomText.font = [UIFont fontWithName:@"Roboto" size:12];
	_roomText.placeholder = @"Room name";
	_roomText.autocorrectionType = UITextAutocorrectionTypeNo;
	_roomText.autocapitalizationType = UITextAutocapitalizationTypeNone;
	_roomText.clearButtonMode = UITextFieldViewModeAlways;
	_roomText.delegate = self;
	[self addSubview:_roomText];

	// Give rounded corners and a light gray border.
	self.layer.borderWidth = 1;
	self.layer.borderColor = [[UIColor lightGrayColor] CGColor];
	self.layer.cornerRadius = 2;
	}
	return self;
	}

	- (void)layoutSubviews {
	_roomText.frame =
	CGRectMake(kRoomTextFieldMargin, 0, CGRectGetWidth(self.bounds) - kRoomTextFieldMargin,
	kRoomTextFieldHeight);
	}

	- (CGSize)sizeThatFits:(CGSize)size {
	size.height = kRoomTextFieldHeight;
	return size;
	}

	- (NSString *)roomText {
	return _roomText.text;
	}

	#pragma mark - UITextFieldDelegate

	- (BOOL)textFieldShouldReturn:(UITextField *)textField {
	// There is no other control that can take focus, so manually resign focus
	// when return (Join) is pressed to trigger \|textFieldDidEndEditing\|.
	[textField resignFirstResponder];
	return YES;
	}

	@end

	@implementation ARDMainView {
	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;

	- (instancetype)initWithFrame:(CGRect)frame {
	if (self = [super initWithFrame:frame]) {
	_roomText = [[ARDRoomTextField alloc] initWithFrame:CGRectZero];
	[self addSubview:_roomText];

	UIFont *controlFont = [UIFont fontWithName:@"Roboto" size:20];
	UIColor *controlFontColor = [UIColor colorWithWhite:0 alpha:.6];

	_callOptionsLabel = [[UILabel alloc] initWithFrame:CGRectZero];
	_callOptionsLabel.text = @"Call Options";
	_callOptionsLabel.font = controlFont;
	_callOptionsLabel.textColor = controlFontColor;
	[_callOptionsLabel sizeToFit];
	[self addSubview:_callOptionsLabel];

	_audioOnlySwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
	[_audioOnlySwitch sizeToFit];
	[self addSubview:_audioOnlySwitch];

	_audioOnlyLabel = [[UILabel alloc] initWithFrame:CGRectZero];
	_audioOnlyLabel.text = @"Audio only";
	_audioOnlyLabel.font = controlFont;
	_audioOnlyLabel.textColor = controlFontColor;
	[_audioOnlyLabel sizeToFit];
	[self addSubview:_audioOnlyLabel];

	_loopbackSwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
	[_loopbackSwitch sizeToFit];
	[self addSubview:_loopbackSwitch];

	_loopbackLabel = [[UILabel alloc] initWithFrame:CGRectZero];
	_loopbackLabel.text = @"Loopback mode";
	_loopbackLabel.font = controlFont;
	_loopbackLabel.textColor = controlFontColor;
	[_loopbackLabel sizeToFit];
	[self addSubview:_loopbackLabel];

	_aecdumpSwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
	[_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];
	[self addSubview:_useManualAudioLabel];

	_startCallButton = [UIButton buttonWithType:UIButtonTypeSystem];
	[_startCallButton setTitle:@"Start call"
	forState:UIControlStateNormal];
	_startCallButton.titleLabel.font = controlFont;
	[_startCallButton sizeToFit];
	[_startCallButton addTarget:self
	action:@selector(onStartCall:)
	forControlEvents:UIControlEventTouchUpInside];
	[self addSubview:_startCallButton];

	// Used to test what happens to sounds when calls are in progress.
	_audioLoopButton = [UIButton buttonWithType:UIButtonTypeSystem];
	_audioLoopButton.titleLabel.font = controlFont;
	[self updateAudioLoopButton];
	[_audioLoopButton addTarget:self
	action:@selector(onToggleAudioLoop:)
	forControlEvents:UIControlEventTouchUpInside];
	[self addSubview:_audioLoopButton];

	self.backgroundColor = [UIColor whiteColor];
	}
	return self;
	}

	- (void)setIsAudioLoopPlaying:(BOOL)isAudioLoopPlaying {
	if (_isAudioLoopPlaying == isAudioLoopPlaying) {
	return;
	}
	_isAudioLoopPlaying = isAudioLoopPlaying;
	[self updateAudioLoopButton];
	}

	- (void)layoutSubviews {
	CGRect bounds = self.bounds;
	CGFloat roomTextWidth = bounds.size.width - 2 * kRoomTextFieldMargin;
	CGFloat roomTextHeight = [_roomText sizeThatFits:bounds.size].height;
	_roomText.frame =
	CGRectMake(kRoomTextFieldMargin, kRoomTextFieldMargin, roomTextWidth, roomTextHeight);

	CGFloat callOptionsLabelTop =
	CGRectGetMaxY(_roomText.frame) + kCallControlMargin * 4;
	_callOptionsLabel.frame = CGRectMake(kCallControlMargin,
	callOptionsLabelTop,
	_callOptionsLabel.frame.size.width,
	_callOptionsLabel.frame.size.height);

	CGFloat audioOnlyTop =
	CGRectGetMaxY(_callOptionsLabel.frame) + kCallControlMargin * 2;
	CGRect audioOnlyRect = CGRectMake(kCallControlMargin * 3,
	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 loopbackModeTop =
	CGRectGetMaxY(_audioOnlySwitch.frame) + kCallControlMargin;
	CGRect loopbackModeRect = CGRectMake(kCallControlMargin * 3,
	loopbackModeTop,
	_loopbackSwitch.frame.size.width,
	_loopbackSwitch.frame.size.height);
	_loopbackSwitch.frame = loopbackModeRect;
	CGFloat loopbackModeLabelCenterX = CGRectGetMaxX(loopbackModeRect) +
	kCallControlMargin + _loopbackLabel.frame.size.width / 2;
	_loopbackLabel.center = CGPointMake(loopbackModeLabelCenterX,
	CGRectGetMidY(loopbackModeRect));

	CGFloat aecdumpModeTop =
	CGRectGetMaxY(_loopbackSwitch.frame) + kCallControlMargin;
	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(_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,
	CGRectGetMidY(useManualAudioRect));

	CGFloat audioLoopTop =
	CGRectGetMaxY(useManualAudioRect) + kCallControlMargin * 3;
	_audioLoopButton.frame = CGRectMake(kCallControlMargin,
	audioLoopTop,
	_audioLoopButton.frame.size.width,
	_audioLoopButton.frame.size.height);

	CGFloat startCallTop =
	CGRectGetMaxY(_audioLoopButton.frame) + kCallControlMargin * 3;
	_startCallButton.frame = CGRectMake(kCallControlMargin,
	startCallTop,
	_startCallButton.frame.size.width,
	_startCallButton.frame.size.height);
	}

	#pragma mark - Private

	- (void)updateAudioLoopButton {
	if (_isAudioLoopPlaying) {
	[_audioLoopButton setTitle:@"Stop sound"
	forState:UIControlStateNormal];
	[_audioLoopButton sizeToFit];
	} else {
	[_audioLoopButton setTitle:@"Play sound"
	forState:UIControlStateNormal];
	[_audioLoopButton sizeToFit];
	}
	}

	- (void)onToggleAudioLoop:(id)sender {
	[_delegate mainViewDidToggleAudioLoop:self];
	}

	- (void)onStartCall:(id)sender {
	[_delegate mainView:self
	didInputRoom:_roomText.roomText
	isLoopback:_loopbackSwitch.isOn
	isAudioOnly:_audioOnlySwitch.isOn
	shouldMakeAecDump:_aecdumpSwitch.isOn
	shouldUseLevelControl:_levelControlSwitch.isOn
	useManualAudio:_useManualAudioSwitch.isOn];
	}

	@end