Move all the examples from the talk directory into the webrtc examples directory.

Significant changes:

- move the libjingle_examples.gyp file into webrtc directory.
- rename talk/examples/android to webrtc/examples/androidapp to avoid name conflicts.
- update paths in talk/libjingle_tests.gyp to point to webrtc directory for Objective-C test.

BUG=
R=pthatcher@webrtc.org, tkchin@webrtc.org

Review URL: https://codereview.webrtc.org/1235563006 .

Cr-Commit-Position: refs/heads/master@{#9681}

webrtc/examples/objc/AppRTCDemo/ios/ARDAppDelegate.h

@@ -0,0 +1,17 @@
+/*
+ *  Copyright 2013 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 <UIKit/UIKit.h>
+
+// The main application class of the AppRTCDemo iOS app demonstrating
+// interoperability between the Objective C implementation of PeerConnection
+// and the apprtc.appspot.com demo webapp.
+@interface ARDAppDelegate : NSObject <UIApplicationDelegate>
+@end

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

@@ -0,0 +1,52 @@
+/*
+ *  Copyright 2013 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 "ARDAppDelegate.h"
+
+#import "RTCLogging.h"
+#import "RTCPeerConnectionFactory.h"
+
+#import "ARDMainViewController.h"
+
+@implementation ARDAppDelegate {
+  UIWindow *_window;
+}
+
+#pragma mark - UIApplicationDelegate methods
+
+- (BOOL)application:(UIApplication *)application
+    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+  [RTCPeerConnectionFactory initializeSSL];
+  _window =  [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
+  [_window makeKeyAndVisible];
+  ARDMainViewController *viewController = [[ARDMainViewController alloc] init];
+  _window.rootViewController = viewController;
+
+#ifndef _DEBUG
+  // In debug builds the default level is LS_INFO and in non-debug builds it is
+  // disabled. Continue to log to console in non-debug builds, but only
+  // warnings and errors.
+  RTCSetMinDebugLogLevel(kRTCLoggingSeverityWarning);
+#endif
+
+  return YES;
+}
+
+- (void)applicationWillResignActive:(UIApplication *)application {
+  ARDMainViewController *viewController =
+      (ARDMainViewController *)_window.rootViewController;
+  [viewController applicationWillResignActive:application];
+}
+
+- (void)applicationWillTerminate:(UIApplication *)application {
+  [RTCPeerConnectionFactory deinitializeSSL];
+}
+
+@end

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

@@ -0,0 +1,27 @@
+/*
+ *  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 <UIKit/UIKit.h>
+
+@class ARDMainView;
+
+@protocol ARDMainViewDelegate <NSObject>
+
+- (void)mainView:(ARDMainView *)mainView didInputRoom:(NSString *)room;
+
+@end
+
+// The main view of AppRTCDemo. It contains an input field for entering a room
+// name on apprtc to connect to.
+@interface ARDMainView : UIView
+
+@property(nonatomic, weak) id<ARDMainViewDelegate> delegate;
+
+@end

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

@@ -0,0 +1,168 @@
+/*
+ *  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"
+
+// TODO(tkchin): retrieve status bar height dynamically.
+static CGFloat const kStatusBarHeight = 20;
+
+static CGFloat const kRoomTextButtonSize = 40;
+static CGFloat const kRoomTextFieldHeight = 40;
+static CGFloat const kRoomTextFieldMargin = 8;
+static CGFloat const kAppLabelHeight = 20;
+
+@class ARDRoomTextField;
+@protocol ARDRoomTextFieldDelegate <NSObject>
+- (void)roomTextField:(ARDRoomTextField *)roomTextField
+         didInputRoom:(NSString *)room;
+@end
+
+// Helper view that contains a text field and a clear button.
+@interface ARDRoomTextField : UIView <UITextFieldDelegate>
+@property(nonatomic, weak) id<ARDRoomTextFieldDelegate> delegate;
+@end
+
+@implementation ARDRoomTextField {
+  UITextField *_roomText;
+  UIButton *_clearButton;
+}
+
+@synthesize delegate = _delegate;
+
+- (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.delegate = self;
+    [_roomText addTarget:self
+                  action:@selector(textFieldDidChange:)
+        forControlEvents:UIControlEventEditingChanged];
+    [self addSubview:_roomText];
+
+    _clearButton = [UIButton buttonWithType:UIButtonTypeCustom];
+    UIImage *image = [UIImage imageForName:@"ic_clear_black_24dp.png"
+                                     color:[UIColor colorWithWhite:0 alpha:.4]];
+
+    [_clearButton setImage:image forState:UIControlStateNormal];
+    [_clearButton addTarget:self
+                      action:@selector(onClear:)
+            forControlEvents:UIControlEventTouchUpInside];
+    _clearButton.hidden = YES;
+    [self addSubview:_clearButton];
+
+    // 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 {
+  CGRect bounds = self.bounds;
+  _clearButton.frame = CGRectMake(CGRectGetMaxX(bounds) - kRoomTextButtonSize,
+                                  CGRectGetMinY(bounds),
+                                  kRoomTextButtonSize,
+                                  kRoomTextButtonSize);
+  _roomText.frame = CGRectMake(
+      CGRectGetMinX(bounds) + kRoomTextFieldMargin,
+      CGRectGetMinY(bounds),
+      CGRectGetMinX(_clearButton.frame) - CGRectGetMinX(bounds) -
+          kRoomTextFieldMargin,
+      kRoomTextFieldHeight);
+}
+
+- (CGSize)sizeThatFits:(CGSize)size {
+  size.height = kRoomTextFieldHeight;
+  return size;
+}
+
+#pragma mark - UITextFieldDelegate
+
+- (void)textFieldDidEndEditing:(UITextField *)textField {
+  [_delegate roomTextField:self didInputRoom:textField.text];
+}
+
+- (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;
+}
+
+#pragma mark - Private
+
+- (void)textFieldDidChange:(id)sender {
+  [self updateClearButton];
+}
+
+- (void)onClear:(id)sender {
+  _roomText.text = @"";
+  [self updateClearButton];
+  [_roomText resignFirstResponder];
+}
+
+- (void)updateClearButton {
+  _clearButton.hidden = _roomText.text.length == 0;
+}
+
+@end
+
+@interface ARDMainView () <ARDRoomTextFieldDelegate>
+@end
+
+@implementation ARDMainView {
+  UILabel *_appLabel;
+  ARDRoomTextField *_roomText;
+}
+
+@synthesize delegate = _delegate;
+
+- (instancetype)initWithFrame:(CGRect)frame {
+  if (self = [super initWithFrame:frame]) {
+    _appLabel = [[UILabel alloc] initWithFrame:CGRectZero];
+    _appLabel.text = @"AppRTCDemo";
+    _appLabel.font = [UIFont fontWithName:@"Roboto" size:34];
+    _appLabel.textColor = [UIColor colorWithWhite:0 alpha:.2];
+    [_appLabel sizeToFit];
+    [self addSubview:_appLabel];
+
+    _roomText = [[ARDRoomTextField alloc] initWithFrame:CGRectZero];
+    _roomText.delegate = self;
+    [self addSubview:_roomText];
+
+    self.backgroundColor = [UIColor whiteColor];
+  }
+  return self;
+}
+
+- (void)layoutSubviews {
+  CGRect bounds = self.bounds;
+  CGFloat roomTextWidth = bounds.size.width - 2 * kRoomTextFieldMargin;
+  CGFloat roomTextHeight = [_roomText sizeThatFits:bounds.size].height;
+  _roomText.frame = CGRectMake(kRoomTextFieldMargin,
+                               kStatusBarHeight + kRoomTextFieldMargin,
+                               roomTextWidth,
+                               roomTextHeight);
+  _appLabel.center = CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));
+}
+
+#pragma mark - ARDRoomTextFieldDelegate
+
+- (void)roomTextField:(ARDRoomTextField *)roomTextField
+         didInputRoom:(NSString *)room {
+  [_delegate mainView:self didInputRoom:room];
+}
+
+@end

webrtc/examples/objc/AppRTCDemo/ios/ARDMainViewController.h

@@ -0,0 +1,17 @@
+/*
+ *  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 <UIKit/UIKit.h>
+
+@interface ARDMainViewController : UIViewController
+
+- (void)applicationWillResignActive:(UIApplication *)application;
+
+@end

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

@@ -0,0 +1,85 @@
+/*
+ *  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 "ARDMainViewController.h"
+
+#import "ARDAppClient.h"
+#import "ARDMainView.h"
+#import "ARDVideoCallViewController.h"
+
+@interface ARDMainViewController () <ARDMainViewDelegate>
+@end
+
+@implementation ARDMainViewController
+
+- (void)loadView {
+  ARDMainView *mainView = [[ARDMainView alloc] initWithFrame:CGRectZero];
+  mainView.delegate = self;
+  self.view = mainView;
+}
+
+- (void)applicationWillResignActive:(UIApplication *)application {
+  // Terminate any calls when we aren't active.
+  [self dismissViewControllerAnimated:NO completion:nil];
+}
+
+#pragma mark - ARDMainViewDelegate
+
+- (void)mainView:(ARDMainView *)mainView didInputRoom:(NSString *)room {
+  if (!room.length) {
+    return;
+  }
+  // Trim whitespaces.
+  NSCharacterSet *whitespaceSet = [NSCharacterSet whitespaceCharacterSet];
+  NSString *trimmedRoom = [room stringByTrimmingCharactersInSet:whitespaceSet];
+
+  // Check that room name is valid.
+  NSError *error = nil;
+  NSRegularExpressionOptions options = NSRegularExpressionCaseInsensitive;
+  NSRegularExpression *regex =
+      [NSRegularExpression regularExpressionWithPattern:@"\\w+"
+                                                options:options
+                                                  error:&error];
+  if (error) {
+    [self showAlertWithMessage:error.localizedDescription];
+    return;
+  }
+  NSRange matchRange =
+      [regex rangeOfFirstMatchInString:trimmedRoom
+                               options:0
+                                 range:NSMakeRange(0, trimmedRoom.length)];
+  if (matchRange.location == NSNotFound ||
+      matchRange.length != trimmedRoom.length) {
+    [self showAlertWithMessage:@"Invalid room name."];
+    return;
+  }
+
+  // Kick off the video call.
+  ARDVideoCallViewController *videoCallViewController =
+      [[ARDVideoCallViewController alloc] initForRoom:trimmedRoom];
+  videoCallViewController.modalTransitionStyle =
+      UIModalTransitionStyleCrossDissolve;
+  [self presentViewController:videoCallViewController
+                     animated:YES
+                   completion:nil];
+}
+
+#pragma mark - Private
+
+- (void)showAlertWithMessage:(NSString*)message {
+  UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:nil
+                                                      message:message
+                                                     delegate:nil
+                                            cancelButtonTitle:@"OK"
+                                            otherButtonTitles:nil];
+  [alertView show];
+}
+
+@end

webrtc/examples/objc/AppRTCDemo/ios/ARDVideoCallView.h

@@ -0,0 +1,35 @@
+/*
+ *  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 <UIKit/UIKit.h>
+
+#import "RTCEAGLVideoView.h"
+
+@class ARDVideoCallView;
+@protocol ARDVideoCallViewDelegate <NSObject>
+
+// Called when the camera switch button is pressed.
+- (void)videoCallViewDidSwitchCamera:(ARDVideoCallView *)view;
+
+// Called when the hangup button is pressed.
+- (void)videoCallViewDidHangup:(ARDVideoCallView *)view;
+
+@end
+
+// Video call view that shows local and remote video, provides a label to
+// display status, and also a hangup button.
+@interface ARDVideoCallView : UIView
+
+@property(nonatomic, readonly) UILabel *statusLabel;
+@property(nonatomic, readonly) RTCEAGLVideoView *localVideoView;
+@property(nonatomic, readonly) RTCEAGLVideoView *remoteVideoView;
+@property(nonatomic, weak) id<ARDVideoCallViewDelegate> delegate;
+
+@end

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

@@ -0,0 +1,162 @@
+/*
+ *  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 "ARDVideoCallView.h"
+
+#import <AVFoundation/AVFoundation.h>
+#import "UIImage+ARDUtilities.h"
+
+static CGFloat const kButtonPadding = 16;
+static CGFloat const kButtonSize = 48;
+static CGFloat const kLocalVideoViewSize = 120;
+static CGFloat const kLocalVideoViewPadding = 8;
+
+@interface ARDVideoCallView () <RTCEAGLVideoViewDelegate>
+@end
+
+@implementation ARDVideoCallView {
+  UIButton *_cameraSwitchButton;
+  UIButton *_hangupButton;
+  CGSize _localVideoSize;
+  CGSize _remoteVideoSize;
+  BOOL _useRearCamera;
+}
+
+@synthesize statusLabel = _statusLabel;
+@synthesize localVideoView = _localVideoView;
+@synthesize remoteVideoView = _remoteVideoView;
+@synthesize delegate = _delegate;
+
+- (instancetype)initWithFrame:(CGRect)frame {
+  if (self = [super initWithFrame:frame]) {
+    _remoteVideoView = [[RTCEAGLVideoView alloc] initWithFrame:CGRectZero];
+    _remoteVideoView.delegate = self;
+    [self addSubview:_remoteVideoView];
+
+    // TODO(tkchin): replace this with a view that renders layer from
+    // AVCaptureSession.
+    _localVideoView = [[RTCEAGLVideoView alloc] initWithFrame:CGRectZero];
+    _localVideoView.delegate = self;
+    [self addSubview:_localVideoView];
+
+    // TODO(tkchin): don't display this if we can't actually do camera switch.
+    _cameraSwitchButton = [UIButton buttonWithType:UIButtonTypeCustom];
+    _cameraSwitchButton.backgroundColor = [UIColor whiteColor];
+    _cameraSwitchButton.layer.cornerRadius = kButtonSize / 2;
+    _cameraSwitchButton.layer.masksToBounds = YES;
+    UIImage *image = [UIImage imageNamed:@"ic_switch_video_black_24dp.png"];
+    [_cameraSwitchButton setImage:image forState:UIControlStateNormal];
+    [_cameraSwitchButton addTarget:self
+                      action:@selector(onCameraSwitch:)
+            forControlEvents:UIControlEventTouchUpInside];
+    [self addSubview:_cameraSwitchButton];
+
+    _hangupButton = [UIButton buttonWithType:UIButtonTypeCustom];
+    _hangupButton.backgroundColor = [UIColor redColor];
+    _hangupButton.layer.cornerRadius = kButtonSize / 2;
+    _hangupButton.layer.masksToBounds = YES;
+    image = [UIImage imageForName:@"ic_call_end_black_24dp.png"
+                            color:[UIColor whiteColor]];
+    [_hangupButton setImage:image forState:UIControlStateNormal];
+    [_hangupButton addTarget:self
+                      action:@selector(onHangup:)
+            forControlEvents:UIControlEventTouchUpInside];
+    [self addSubview:_hangupButton];
+
+    _statusLabel = [[UILabel alloc] initWithFrame:CGRectZero];
+    _statusLabel.font = [UIFont fontWithName:@"Roboto" size:16];
+    _statusLabel.textColor = [UIColor whiteColor];
+    [self addSubview:_statusLabel];
+  }
+  return self;
+}
+
+- (void)layoutSubviews {
+  CGRect bounds = self.bounds;
+  if (_remoteVideoSize.width > 0 && _remoteVideoSize.height > 0) {
+    // Aspect fill remote video into bounds.
+    CGRect remoteVideoFrame =
+        AVMakeRectWithAspectRatioInsideRect(_remoteVideoSize, bounds);
+    CGFloat scale = 1;
+    if (remoteVideoFrame.size.width > remoteVideoFrame.size.height) {
+      // Scale by height.
+      scale = bounds.size.height / remoteVideoFrame.size.height;
+    } else {
+      // Scale by width.
+      scale = bounds.size.width / remoteVideoFrame.size.width;
+    }
+    remoteVideoFrame.size.height *= scale;
+    remoteVideoFrame.size.width *= scale;
+    _remoteVideoView.frame = remoteVideoFrame;
+    _remoteVideoView.center =
+        CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));
+  } else {
+    _remoteVideoView.frame = bounds;
+  }
+
+  if (_localVideoSize.width && _localVideoSize.height > 0) {
+    // Aspect fit local video view into a square box.
+    CGRect localVideoFrame =
+        CGRectMake(0, 0, kLocalVideoViewSize, kLocalVideoViewSize);
+    localVideoFrame =
+        AVMakeRectWithAspectRatioInsideRect(_localVideoSize, localVideoFrame);
+
+    // Place the view in the bottom right.
+    localVideoFrame.origin.x = CGRectGetMaxX(bounds)
+        - localVideoFrame.size.width - kLocalVideoViewPadding;
+    localVideoFrame.origin.y = CGRectGetMaxY(bounds)
+        - localVideoFrame.size.height - kLocalVideoViewPadding;
+    _localVideoView.frame = localVideoFrame;
+  } else {
+    _localVideoView.frame = bounds;
+  }
+
+  // Place hangup button in the bottom left.
+  _hangupButton.frame =
+      CGRectMake(CGRectGetMinX(bounds) + kButtonPadding,
+                 CGRectGetMaxY(bounds) - kButtonPadding -
+                     kButtonSize,
+                 kButtonSize,
+                 kButtonSize);
+
+  // Place button to the right of hangup button.
+  CGRect cameraSwitchFrame = _hangupButton.frame;
+  cameraSwitchFrame.origin.x =
+      CGRectGetMaxX(cameraSwitchFrame) + kButtonPadding;
+  _cameraSwitchButton.frame = cameraSwitchFrame;
+
+  [_statusLabel sizeToFit];
+  _statusLabel.center =
+      CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));
+}
+
+#pragma mark - RTCEAGLVideoViewDelegate
+
+- (void)videoView:(RTCEAGLVideoView*)videoView didChangeVideoSize:(CGSize)size {
+  if (videoView == _localVideoView) {
+    _localVideoSize = size;
+    _localVideoView.hidden = CGSizeEqualToSize(CGSizeZero, _localVideoSize);
+  } else if (videoView == _remoteVideoView) {
+    _remoteVideoSize = size;
+  }
+  [self setNeedsLayout];
+}
+
+#pragma mark - Private
+
+- (void)onCameraSwitch:(id)sender {
+  [_delegate videoCallViewDidSwitchCamera:self];
+}
+
+- (void)onHangup:(id)sender {
+  [_delegate videoCallViewDidHangup:self];
+}
+
+@end

webrtc/examples/objc/AppRTCDemo/ios/ARDVideoCallViewController.h

@@ -0,0 +1,17 @@
+/*
+ *  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 <UIKit/UIKit.h>
+
+@interface ARDVideoCallViewController : UIViewController
+
+- (instancetype)initForRoom:(NSString *)room;
+
+@end

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

@@ -0,0 +1,177 @@
+/*
+ *  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 "ARDVideoCallViewController.h"
+
+#import "RTCAVFoundationVideoSource.h"
+#import "RTCLogging.h"
+
+#import "ARDAppClient.h"
+#import "ARDVideoCallView.h"
+
+@interface ARDVideoCallViewController () <ARDAppClientDelegate,
+    ARDVideoCallViewDelegate>
+@property(nonatomic, strong) RTCVideoTrack *localVideoTrack;
+@property(nonatomic, strong) RTCVideoTrack *remoteVideoTrack;
+@property(nonatomic, readonly) ARDVideoCallView *videoCallView;
+@end
+
+@implementation ARDVideoCallViewController {
+  ARDAppClient *_client;
+  RTCVideoTrack *_remoteVideoTrack;
+  RTCVideoTrack *_localVideoTrack;
+}
+
+@synthesize videoCallView = _videoCallView;
+
+- (instancetype)initForRoom:(NSString *)room {
+  if (self = [super init]) {
+    _client = [[ARDAppClient alloc] initWithDelegate:self];
+    [_client connectToRoomWithId:room options:nil];
+  }
+  return self;
+}
+
+- (void)loadView {
+  _videoCallView = [[ARDVideoCallView alloc] initWithFrame:CGRectZero];
+  _videoCallView.delegate = self;
+  _videoCallView.statusLabel.text =
+      [self statusTextForState:RTCICEConnectionNew];
+  self.view = _videoCallView;
+}
+
+#pragma mark - ARDAppClientDelegate
+
+- (void)appClient:(ARDAppClient *)client
+    didChangeState:(ARDAppClientState)state {
+  switch (state) {
+    case kARDAppClientStateConnected:
+      RTCLog(@"Client connected.");
+      break;
+    case kARDAppClientStateConnecting:
+      RTCLog(@"Client connecting.");
+      break;
+    case kARDAppClientStateDisconnected:
+      RTCLog(@"Client disconnected.");
+      [self hangup];
+      break;
+  }
+}
+
+- (void)appClient:(ARDAppClient *)client
+    didChangeConnectionState:(RTCICEConnectionState)state {
+  RTCLog(@"ICE state changed: %d", state);
+  __weak ARDVideoCallViewController *weakSelf = self;
+  dispatch_async(dispatch_get_main_queue(), ^{
+    ARDVideoCallViewController *strongSelf = weakSelf;
+    strongSelf.videoCallView.statusLabel.text =
+        [strongSelf statusTextForState:state];
+  });
+}
+
+- (void)appClient:(ARDAppClient *)client
+    didReceiveLocalVideoTrack:(RTCVideoTrack *)localVideoTrack {
+  self.localVideoTrack = localVideoTrack;
+}
+
+- (void)appClient:(ARDAppClient *)client
+    didReceiveRemoteVideoTrack:(RTCVideoTrack *)remoteVideoTrack {
+  self.remoteVideoTrack = remoteVideoTrack;
+  _videoCallView.statusLabel.hidden = YES;
+}
+
+- (void)appClient:(ARDAppClient *)client
+         didError:(NSError *)error {
+  NSString *message =
+      [NSString stringWithFormat:@"%@", error.localizedDescription];
+  [self showAlertWithMessage:message];
+  [self hangup];
+}
+
+#pragma mark - ARDVideoCallViewDelegate
+
+- (void)videoCallViewDidHangup:(ARDVideoCallView *)view {
+  [self hangup];
+}
+
+- (void)videoCallViewDidSwitchCamera:(ARDVideoCallView *)view {
+  // TODO(tkchin): Rate limit this so you can't tap continously on it.
+  // Probably through an animation.
+  [self switchCamera];
+}
+
+#pragma mark - Private
+
+- (void)setLocalVideoTrack:(RTCVideoTrack *)localVideoTrack {
+  if (_localVideoTrack == localVideoTrack) {
+    return;
+  }
+  [_localVideoTrack removeRenderer:_videoCallView.localVideoView];
+  _localVideoTrack = nil;
+  [_videoCallView.localVideoView renderFrame:nil];
+  _localVideoTrack = localVideoTrack;
+  [_localVideoTrack addRenderer:_videoCallView.localVideoView];
+}
+
+- (void)setRemoteVideoTrack:(RTCVideoTrack *)remoteVideoTrack {
+  if (_remoteVideoTrack == remoteVideoTrack) {
+    return;
+  }
+  [_remoteVideoTrack removeRenderer:_videoCallView.localVideoView];
+  _remoteVideoTrack = nil;
+  [_videoCallView.remoteVideoView renderFrame:nil];
+  _remoteVideoTrack = remoteVideoTrack;
+  [_remoteVideoTrack addRenderer:_videoCallView.remoteVideoView];
+}
+
+- (void)hangup {
+  self.remoteVideoTrack = nil;
+  self.localVideoTrack = nil;
+  [_client disconnect];
+  if (![self isBeingDismissed]) {
+    [self.presentingViewController dismissViewControllerAnimated:YES
+                                                      completion:nil];
+  }
+}
+
+- (void)switchCamera {
+  RTCVideoSource* source = self.localVideoTrack.source;
+  if ([source isKindOfClass:[RTCAVFoundationVideoSource class]]) {
+    RTCAVFoundationVideoSource* avSource = (RTCAVFoundationVideoSource*)source;
+    avSource.useBackCamera = !avSource.useBackCamera;
+    _videoCallView.localVideoView.transform = avSource.useBackCamera ?
+        CGAffineTransformIdentity : CGAffineTransformMakeScale(-1, 1);
+  }
+}
+
+- (NSString *)statusTextForState:(RTCICEConnectionState)state {
+  switch (state) {
+    case RTCICEConnectionNew:
+    case RTCICEConnectionChecking:
+      return @"Connecting...";
+    case RTCICEConnectionConnected:
+    case RTCICEConnectionCompleted:
+    case RTCICEConnectionFailed:
+    case RTCICEConnectionDisconnected:
+    case RTCICEConnectionClosed:
+      return nil;
+  }
+}
+
+- (void)showAlertWithMessage:(NSString*)message {
+  UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:nil
+                                                      message:message
+                                                     delegate:nil
+                                            cancelButtonTitle:@"OK"
+                                            otherButtonTitles:nil];
+  [alertView show];
+}
+
+@end

webrtc/examples/objc/AppRTCDemo/ios/AppRTCDemo-Prefix.pch

@@ -0,0 +1,23 @@
+/*
+ *  Copyright 2013 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.
+ */
+
+//
+// Prefix header for all source files of the 'AppRTCDemo' target in the
+// 'AppRTCDemo' project
+//
+
+#import <Availability.h>
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_6_0
+#warning "This project uses features only available in iOS SDK 6.0 and later."
+#endif
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>

webrtc/examples/objc/AppRTCDemo/ios/Info.plist

@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>BuildMachineOSBuild</key>
+  <string>12E55</string>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleDisplayName</key>
+  <string>AppRTCDemo</string>
+  <key>CFBundleExecutable</key>
+  <string>AppRTCDemo</string>
+  <key>CFBundleIcons</key>
+  <dict>
+    <key>CFBundlePrimaryIcon</key>
+    <dict>
+      <key>CFBundleIconFiles</key>
+      <array>
+        <string>Icon.png</string>
+      </array>
+    </dict>
+  </dict>
+  <key>CFBundleIdentifier</key>
+  <string>com.google.AppRTCDemo</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>AppRTCDemo</string>
+  <key>CFBundlePackageType</key>
+  <string>APPL</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleSupportedPlatforms</key>
+  <array>
+    <string>iPhoneOS</string>
+  </array>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+  <key>UIStatusBarTintParameters</key>
+  <dict>
+    <key>UINavigationBar</key>
+    <dict>
+      <key>Style</key>
+      <string>UIBarStyleDefault</string>
+      <key>Translucent</key>
+      <false/>
+    </dict>
+  </dict>
+  <key>UISupportedInterfaceOrientations</key>
+  <array>
+    <string>UIInterfaceOrientationPortrait</string>
+  </array>
+  <key>UIAppFonts</key>
+  <array>
+    <string>Roboto-Regular.ttf</string>
+  </array>
+  <key>UIBackgroundModes</key>
+  <array>
+    <string>voip</string>
+  </array>
+  <key>UILaunchImages</key>
+  <array>
+    <dict>
+      <key>UILaunchImageMinimumOSVersion</key>
+      <string>7.0</string>
+      <key>UILaunchImageName</key>
+      <string>iPhone5</string>
+      <key>UILaunchImageOrientation</key>
+      <string>Portrait</string>
+      <key>UILaunchImageSize</key>
+      <string>{320, 568}</string>
+    </dict>
+    <dict>
+      <key>UILaunchImageMinimumOSVersion</key>
+      <string>8.0</string>
+      <key>UILaunchImageName</key>
+      <string>iPhone6</string>
+      <key>UILaunchImageOrientation</key>
+      <string>Portrait</string>
+      <key>UILaunchImageSize</key>
+      <string>{375, 667}</string>
+    </dict>
+    <dict>
+      <key>UILaunchImageMinimumOSVersion</key>
+      <string>8.0</string>
+      <key>UILaunchImageName</key>
+      <string>iPhone6p</string>
+      <key>UILaunchImageOrientation</key>
+      <string>Portrait</string>
+      <key>UILaunchImageSize</key>
+      <string>{414, 736}</string>
+    </dict>
+  </array>
+</dict>
+</plist>

webrtc/examples/objc/AppRTCDemo/ios/UIImage+ARDUtilities.h

@@ -0,0 +1,18 @@
+/*
+ *  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 <UIKit/UIKit.h>
+
+@interface UIImage (ARDUtilities)
+
+// Returns an color tinted version for the given image resource.
++ (UIImage *)imageForName:(NSString *)name color:(UIColor *)color;
+
+@end

webrtc/examples/objc/AppRTCDemo/ios/UIImage+ARDUtilities.m

@@ -0,0 +1,31 @@
+/*
+ *  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 "UIImage+ARDUtilities.h"
+
+@implementation UIImage (ARDUtilities)
+
++ (UIImage *)imageForName:(NSString *)name color:(UIColor *)color {
+  UIImage *image = [UIImage imageNamed:name];
+  if (!image) {
+    return nil;
+  }
+  UIGraphicsBeginImageContextWithOptions(image.size, NO, 0.0f);
+  [color setFill];
+  CGRect bounds = CGRectMake(0, 0, image.size.width, image.size.height);
+  UIRectFill(bounds);
+  [image drawInRect:bounds blendMode:kCGBlendModeDestinationIn alpha:1.0f];
+  UIImage *coloredImage = UIGraphicsGetImageFromCurrentImageContext();
+  UIGraphicsEndImageContext();
+
+  return coloredImage;
+}
+
+@end

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

@@ -0,0 +1,20 @@
+/*
+ *  Copyright 2013 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 <UIKit/UIKit.h>
+
+#import "ARDAppDelegate.h"
+
+int main(int argc, char* argv[]) {
+  @autoreleasepool {
+    return UIApplicationMain(
+        argc, argv, nil, NSStringFromClass([ARDAppDelegate class]));
+  }
+}