Move talk/examples/* to webrtc/examples.

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

-/*
- * libjingle
- * Copyright 2015 Google Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *  1. Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright notice,
- *     this list of conditions and the following disclaimer in the documentation
- *     and/or other materials provided with the distribution.
- *  3. The name of the author may not be used to endorse or promote products
- *     derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#import "ARDVideoCallViewController.h"
-
-#import "RTCAVFoundationVideoSource.h"
-
-#import "ARDAppClient.h"
-#import "ARDLogging.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:
-      ARDLog(@"Client connected.");
-      break;
-    case kARDAppClientStateConnecting:
-      ARDLog(@"Client connecting.");
-      break;
-    case kARDAppClientStateDisconnected:
-      ARDLog(@"Client disconnected.");
-      [self hangup];
-      break;
-  }
-}
-
-- (void)appClient:(ARDAppClient *)client
-    didChangeConnectionState:(RTCICEConnectionState)state {
-  ARDLog(@"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