1 files changed, 263 insertions, 0 deletions
diff --git a/third_party/libwebrtc/examples/objc/AppRTCMobile/ios/ARDMainViewController.m b/third_party/libwebrtc/examples/objc/AppRTCMobile/ios/ARDMainViewController.m
new file mode 100644
index 0000000000..e8b8112e41
--- /dev/null
+++ b/third_party/libwebrtc/examples/objc/AppRTCMobile/ios/ARDMainViewController.m
@@ -0,0 +1,263 @@
+/*
+ *  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 <AVFoundation/AVFoundation.h>
+
+#import "sdk/objc/base/RTCLogging.h"
+#import "sdk/objc/components/audio/RTCAudioSession.h"
+#import "sdk/objc/components/audio/RTCAudioSessionConfiguration.h"
+#import "sdk/objc/helpers/RTCDispatcher.h"
+
+#import "ARDAppClient.h"
+#import "ARDMainView.h"
+#import "ARDSettingsModel.h"
+#import "ARDSettingsViewController.h"
+#import "ARDVideoCallViewController.h"
+
+static NSString *const barButtonImageString = @"ic_settings_black_24dp.png";
+
+// Launch argument to be passed to indicate that the app should start loopback immediatly
+static NSString *const loopbackLaunchProcessArgument = @"loopback";
+
+@interface ARDMainViewController () <ARDMainViewDelegate,
+                                     ARDVideoCallViewControllerDelegate,
+                                     RTC_OBJC_TYPE (RTCAudioSessionDelegate)>
+@property(nonatomic, strong) ARDMainView *mainView;
+@property(nonatomic, strong) AVAudioPlayer *audioPlayer;
+@end
+
+@implementation ARDMainViewController {
+  BOOL _useManualAudio;
+}
+
+@synthesize mainView = _mainView;
+@synthesize audioPlayer = _audioPlayer;
+
+- (void)viewDidLoad {
+  [super viewDidLoad];
+  if ([[[NSProcessInfo processInfo] arguments] containsObject:loopbackLaunchProcessArgument]) {
+    [self mainView:nil didInputRoom:@"" isLoopback:YES];
+  }
+}
+
+- (void)loadView {
+  self.title = @"AppRTC Mobile";
+  _mainView = [[ARDMainView alloc] initWithFrame:CGRectZero];
+  _mainView.delegate = self;
+  self.view = _mainView;
+  [self addSettingsBarButton];
+
+  RTC_OBJC_TYPE(RTCAudioSessionConfiguration) *webRTCConfig =
+      [RTC_OBJC_TYPE(RTCAudioSessionConfiguration) webRTCConfiguration];
+  webRTCConfig.categoryOptions = webRTCConfig.categoryOptions |
+      AVAudioSessionCategoryOptionDefaultToSpeaker;
+  [RTC_OBJC_TYPE(RTCAudioSessionConfiguration) setWebRTCConfiguration:webRTCConfig];
+
+  RTC_OBJC_TYPE(RTCAudioSession) *session = [RTC_OBJC_TYPE(RTCAudioSession) sharedInstance];
+  [session addDelegate:self];
+
+  [self configureAudioSession];
+  [self setupAudioPlayer];
+}
+
+- (void)addSettingsBarButton {
+  UIBarButtonItem *settingsButton =
+      [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:barButtonImageString]
+                                       style:UIBarButtonItemStylePlain
+                                      target:self
+                                      action:@selector(showSettings:)];
+  self.navigationItem.rightBarButtonItem = settingsButton;
+}
+
++ (NSString *)loopbackRoomString {
+  NSString *loopbackRoomString =
+      [[NSUUID UUID].UUIDString stringByReplacingOccurrencesOfString:@"-" withString:@""];
+  return loopbackRoomString;
+}
+
+#pragma mark - ARDMainViewDelegate
+
+- (void)mainView:(ARDMainView *)mainView didInputRoom:(NSString *)room isLoopback:(BOOL)isLoopback {
+  if (!room.length) {
+    if (isLoopback) {
+      // If this is a loopback call, allow a generated room name.
+      room = [[self class] loopbackRoomString];
+    } else {
+      [self showAlertWithMessage:@"Missing room name."];
+      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;
+  }
+
+  ARDSettingsModel *settingsModel = [[ARDSettingsModel alloc] init];
+
+  RTC_OBJC_TYPE(RTCAudioSession) *session = [RTC_OBJC_TYPE(RTCAudioSession) sharedInstance];
+  session.useManualAudio = [settingsModel currentUseManualAudioConfigSettingFromStore];
+  session.isAudioEnabled = NO;
+
+  // Kick off the video call.
+  ARDVideoCallViewController *videoCallViewController =
+      [[ARDVideoCallViewController alloc] initForRoom:trimmedRoom
+                                           isLoopback:isLoopback
+                                             delegate:self];
+  videoCallViewController.modalTransitionStyle =
+      UIModalTransitionStyleCrossDissolve;
+  videoCallViewController.modalPresentationStyle = UIModalPresentationFullScreen;
+  [self presentViewController:videoCallViewController
+                     animated:YES
+                   completion:nil];
+}
+
+- (void)mainViewDidToggleAudioLoop:(ARDMainView *)mainView {
+  if (mainView.isAudioLoopPlaying) {
+    [_audioPlayer stop];
+  } else {
+    [_audioPlayer play];
+  }
+  mainView.isAudioLoopPlaying = _audioPlayer.playing;
+}
+
+#pragma mark - ARDVideoCallViewControllerDelegate
+
+- (void)viewControllerDidFinish:(ARDVideoCallViewController *)viewController {
+  if (![viewController isBeingDismissed]) {
+    RTCLog(@"Dismissing VC");
+    [self dismissViewControllerAnimated:YES completion:^{
+      [self restartAudioPlayerIfNeeded];
+    }];
+  }
+  RTC_OBJC_TYPE(RTCAudioSession) *session = [RTC_OBJC_TYPE(RTCAudioSession) sharedInstance];
+  session.isAudioEnabled = NO;
+}
+
+#pragma mark - RTC_OBJC_TYPE(RTCAudioSessionDelegate)
+
+- (void)audioSessionDidStartPlayOrRecord:(RTC_OBJC_TYPE(RTCAudioSession) *)session {
+  // Stop playback on main queue and then configure WebRTC.
+  [RTC_OBJC_TYPE(RTCDispatcher)
+      dispatchAsyncOnType:RTCDispatcherTypeMain
+                    block:^{
+                      if (self.mainView.isAudioLoopPlaying) {
+                        RTCLog(@"Stopping audio loop due to WebRTC start.");
+                        [self.audioPlayer stop];
+                      }
+                      RTCLog(@"Setting isAudioEnabled to YES.");
+                      session.isAudioEnabled = YES;
+                    }];
+}
+
+- (void)audioSessionDidStopPlayOrRecord:(RTC_OBJC_TYPE(RTCAudioSession) *)session {
+  // WebRTC is done with the audio session. Restart playback.
+  [RTC_OBJC_TYPE(RTCDispatcher) dispatchAsyncOnType:RTCDispatcherTypeMain
+                                              block:^{
+                                                RTCLog(@"audioSessionDidStopPlayOrRecord");
+                                                [self restartAudioPlayerIfNeeded];
+                                              }];
+}
+
+#pragma mark - Private
+- (void)showSettings:(id)sender {
+  ARDSettingsViewController *settingsController =
+      [[ARDSettingsViewController alloc] initWithStyle:UITableViewStyleGrouped
+                                         settingsModel:[[ARDSettingsModel alloc] init]];
+
+  UINavigationController *navigationController =
+      [[UINavigationController alloc] initWithRootViewController:settingsController];
+  [self presentViewControllerAsModal:navigationController];
+}
+
+- (void)presentViewControllerAsModal:(UIViewController *)viewController {
+  [self presentViewController:viewController animated:YES completion:nil];
+}
+
+- (void)configureAudioSession {
+  RTC_OBJC_TYPE(RTCAudioSessionConfiguration) *configuration =
+      [[RTC_OBJC_TYPE(RTCAudioSessionConfiguration) alloc] init];
+  configuration.category = AVAudioSessionCategoryAmbient;
+  configuration.categoryOptions = AVAudioSessionCategoryOptionDuckOthers;
+  configuration.mode = AVAudioSessionModeDefault;
+
+  RTC_OBJC_TYPE(RTCAudioSession) *session = [RTC_OBJC_TYPE(RTCAudioSession) sharedInstance];
+  [session lockForConfiguration];
+  BOOL hasSucceeded = NO;
+  NSError *error = nil;
+  if (session.isActive) {
+    hasSucceeded = [session setConfiguration:configuration error:&error];
+  } else {
+    hasSucceeded = [session setConfiguration:configuration
+                                      active:YES
+                                       error:&error];
+  }
+  if (!hasSucceeded) {
+    RTCLogError(@"Error setting configuration: %@", error.localizedDescription);
+  }
+  [session unlockForConfiguration];
+}
+
+- (void)setupAudioPlayer {
+  NSString *audioFilePath =
+      [[NSBundle mainBundle] pathForResource:@"mozart" ofType:@"mp3"];
+  NSURL *audioFileURL = [NSURL URLWithString:audioFilePath];
+  _audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:audioFileURL
+                                                        error:nil];
+  _audioPlayer.numberOfLoops = -1;
+  _audioPlayer.volume = 1.0;
+  [_audioPlayer prepareToPlay];
+}
+
+- (void)restartAudioPlayerIfNeeded {
+  [self configureAudioSession];
+  if (_mainView.isAudioLoopPlaying && !self.presentedViewController) {
+    RTCLog(@"Starting audio loop due to WebRTC end.");
+    [_audioPlayer play];
+  }
+}
+
+- (void)showAlertWithMessage:(NSString*)message {
+  UIAlertController *alert =
+      [UIAlertController alertControllerWithTitle:nil
+                                          message:message
+                                   preferredStyle:UIAlertControllerStyleAlert];
+
+  UIAlertAction *defaultAction = [UIAlertAction actionWithTitle:@"OK"
+                                                          style:UIAlertActionStyleDefault
+                                                        handler:^(UIAlertAction *action){
+                                                        }];
+
+  [alert addAction:defaultAction];
+  [self presentViewController:alert animated:YES completion:nil];
+}
+
+@end