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Пример iOS-приложения с плеером и стримером

Данное приложение может использоваться для публикации WebRTC-видеопотока и воспроизведения любого из следующих типов потоков с Web Call Server:

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Слева отображается видео с камеры, справа воспроизводится другой поток.

Работа с кодом примера

Для разбора кода возьмем версию примера TwoWayStreaming, которая доступена для скачивания в соответствующей сборке 2.5.2.

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1. Импорт API. код

Code Block

language	bashcpp
theme	RDark

#import <FPWCSApi2/FPWCSApi2.h>

...

URL WCS-сервера
имя серверного приложения defaultApp

Code Block

language	bashcpp
theme	RDark

- (FPWCSApi2Session *)connect {
    FPWCSApi2SessionOptions *options = [[FPWCSApi2SessionOptions alloc] init];
    options.urlServer = _connectUrl.text;
    options.appKey = @"defaultApp";
    NSError *error;
    FPWCSApi2Session *session = [FPWCSApi2 createSession:options error:&error];
    if (!session) {...
    [session connect];
   UIAlertController * alert = [UIAlertController
                                     alertControllerWithTitle:@"Failed to connect"
                      return session;
}

3. Публикация видеопотока.

FPWCSApi2Session createStream, FPWCSApi2Stream publish код

Методу createStream передаются параметры:

имя публикуемого потока
вид для локального отображения
параметр record = true для записи потока при публикации
размеры и FPS публикуемого видео при публикации с iPad

Code Block

language	cpp
theme	RDark

- (FPWCSApi2Stream *)publishStream {
    FPWCSApi2Session *session = [FPWCSApi2 getSessions][0];
    FPWCSApi2StreamOptions *options = [[FPWCSApi2StreamOptions alloc] init];
    options.name = _localStreamName.text;
    options.display = _localDisplay;
    if ( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad ) {
        options.constraints = [[FPWCSApi2MediaConstraints alloc]    message:error.localizedDescriptioninitWithAudio:YES videoWidth:640 videoHeight:480 videoFps:15];
    }
    NSError *error;
    FPWCSApi2Stream *stream = [session createStream:options error:&error];
    ...
    if(![stream publish:&error]) {
         preferredStyle:UIAlertControllerStyleAlert];
   UIAlertController * alert = [UIAlertController
     
        UIAlertAction* okButton = [UIAlertAction
                                   actionWithTitlealertControllerWithTitle:@"OkFailed to publish"
                                     stylemessage:UIAlertActionStyleDefaulterror.localizedDescription
                                   handler:^(UIAlertAction * action) { preferredStyle:UIAlertControllerStyleAlert];
        
        UIAlertAction* okButton = [UIAlertAction
                    [self onDisconnected];
               actionWithTitle:@"Ok"
                    }];
        
        [alert addAction:okButton];style:UIAlertActionStyleDefault
        [self presentViewController:alert animated:YES completion:nil];
             return nil;
    }
    
    [session on:kFPWCSSessionStatusEstablished callbackhandler:^(FPWCSApi2SessionUIAlertAction *rSession action) {
          [self changeConnectionStatus:[rSession getStatus]];
                             [self onConnected:rSessiononUnpublished];
    }];
    
    [session on:kFPWCSSessionStatusDisconnected callback:^(FPWCSApi2Session *rSession){
        [self changeConnectionStatus:[rSession getStatus]];
        [self onDisconnected];
    }];
    
    [session on:kFPWCSSessionStatusFailed callback:^(FPWCSApi2Session *rSession){
        [selfalert changeConnectionStatus:[rSession getStatus]]addAction:okButton];
        [self onDisconnected];
    }presentViewController:alert animated:YES completion:nil];
    [session connect];}
    return sessionstream;
}

3. Публикация видеопотока.

FPWCSApi2Session createStream, FPWCSApi2Stream publish код

Методу createStream передаются параметры:

имя публикуемого потока
вид для локального отображения
параметр record = true для записи потока при публикации
размеры и FPS публикуемого видео при публикации с iPad

4. Переключение камеры во время публикации потока

FPWCSApi2Stream switchCamera код

Code Block

language	bashcpp
theme	RDark

- (FPWCSApi2Streamvoid)switchCameraButton:(UIButton *)publishStreambutton {
    FPWCSApi2Session *session = if ([FPWCSApi2 getSessions][0];.count) {
    FPWCSApi2StreamOptions *options    FPWCSApi2Session *session = [[FPWCSApi2StreamOptionsFPWCSApi2 allocgetSessions] init[0];
    options.name = _localStreamName.text;
  NSArray *streams options.display = _localDisplay;
= [session getStreams];
      if  for ( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPadFPWCSApi2Stream *stream in streams ) {
        options.constraints = [[FPWCSApi2MediaConstraints alloc] initWithAudio:YES videoWidth:640 videoHeight:480 videoFps:15];
  if ([stream isPublished]) {
        }
    NSError *error;
   NSLog(@"Found FPWCSApi2Streampublished *stream, = [session createStream:options error:&error]switching camera");
    if (!stream) {
        UIAlertController * alert = [UIAlertController[stream switchCamera];
            }
        }
    } else {
           alertControllerWithTitle:NSLog(@"FailedNo active tosessions publishfound");
                                     message:error.localizedDescription}
}

5. Воспроизведение видеопотока.

FPWCSApi2Session createStream, FPWCSApi2Stream play код

Методу createStream передаются параметры:

имя воспроизводимого потока
вид для отображения потока

Code Block

language	cpp
theme	RDark

- (FPWCSApi2Stream *)playStream {
    FPWCSApi2Session *session =                               preferredStyle:UIAlertControllerStyleAlert];
        
        UIAlertAction* okButton = [UIAlertAction
                                   actionWithTitle:@"Ok"
                                   style:UIAlertActionStyleDefault
                                   handler:^(UIAlertAction * action) {
                                       [self onUnpublished];
                                   }];
        
        [alert addAction:okButton];
        [self presentViewController:alert animated:YES completion:nil];
        return nil;
    }
    [stream on:kFPWCSStreamStatusPublishing callback:^(FPWCSApi2Stream *rStream){
        [self changeStreamStatus:rStream];
        [self onPublishing:rStream];
    }];

    [stream on:kFPWCSStreamStatusUnpublished callback:^(FPWCSApi2Stream *rStream){
        [self changeStreamStatus:rStream];
        [self onUnpublished];
    }];
    
    [stream on:kFPWCSStreamStatusFailed callback:^(FPWCSApi2Stream *rStream){
        [self changeStreamStatus:rStream];
        [self onUnpublished];
    }];
    if(![stream publish:&error]) {
        UIAlertController * alert = [UIAlertController
                                     alertControllerWithTitle:@"Failed to publish"
                                     message:error.localizedDescription
                                     preferredStyle:UIAlertControllerStyleAlert];
        
        UIAlertAction* okButton = [UIAlertAction
                                    actionWithTitle:@"Ok"
                                    style:UIAlertActionStyleDefault
                                    handler:^(UIAlertAction * action) {
                                        [self onUnpublished];
                                    }];
        
        [alert addAction:okButton];
        [self presentViewController:alert animated:YES completion:nil];
    }
    return stream;
}

4. Переключение камеры во время публикации потока

FPWCSApi2Stream switchCamera код

Code Block

language	bash
theme	RDark

- (void)switchCameraButton:(UIButton *)button {
    if ([FPWCSApi2 getSessions].count) {
        FPWCSApi2Session *session = [FPWCSApi2 getSessions][0];
        NSArray *streams = [session getStreams];
        for (FPWCSApi2Stream *stream in streams ) {
            if ([stream isPublished]) {
                NSLog(@"Found published stream, switching camera");
                [stream switchCamera];
            }
        }
    } else {
        NSLog(@"No active sessions found");
    }
}

5. Воспроизведение видеопотока.

FPWCSApi2Session createStream, FPWCSApi2Stream play код

Методу createStream передаются параметры:

имя воспроизводимого потока
вид для отображения потока

Code Block

language	bash
theme	RDark

- (FPWCSApi2Stream *)playStream {
    FPWCSApi2Session *session = [FPWCSApi2 getSessions][0];
    FPWCSApi2StreamOptions *options = [[FPWCSApi2StreamOptions alloc] init];
    options.name = _remoteStreamName.text;
    options.display = _remoteDisplay;
    NSError *error;
    FPWCSApi2Stream *stream = [session createStream:options error:nil];
    if (!stream) {
        UIAlertController * alert = [UIAlertController
                                     alertControllerWithTitle:@"Failed to play"
                                     message:error.localizedDescription
                                     preferredStyle:UIAlertControllerStyleAlert];
        
        UIAlertAction* okButton = [UIAlertAction
                                   actionWithTitle:@"Ok"
                                   style:UIAlertActionStyleDefault
                                   handler:^(UIAlertAction * action) {
                                       [self onStopped];
                                   }];
        
        [alert addAction:okButton];
        [self presentViewController:alert animated:YES completion:nil];
        return nil;
    }
    [stream on:kFPWCSStreamStatusPlaying callback:^(FPWCSApi2Stream *rStream){
        [self changeStreamStatus:rStream];
        [self onPlaying:rStream];
    }];
    
    [stream on:kFPWCSStreamStatusNotEnoughtBandwidth callback:^(FPWCSApi2Stream *rStream){
        NSLog(@"Not enough bandwidth stream %@, consider using lower video resolution or bitrate. Bandwidth %ld bitrate %ld", [rStream getName], [rStream getNetworkBandwidth] / 1000, [rStream getRemoteBitrate] / 1000);
        [self changeStreamStatus:rStream];
    }];
    
    [stream on:kFPWCSStreamStatusStopped callback:^(FPWCSApi2Stream *rStream){
        [self changeStreamStatus:rStream];
        [self onStopped];
    }];
    [stream on:kFPWCSStreamStatusFailed callback:^(FPWCSApi2Stream *rStream){
        [self changeStreamStatus:rStream];
        [self onStopped];
    }];
    if(![stream play:&error]) {
        UIAlertController * alert = [UIAlertController
                                     alertControllerWithTitle:@"Failed to play"
                                     message:error.localizedDescription
                                     preferredStyle:UIAlertControllerStyleAlert];
        
        UIAlertAction* okButton = [UIAlertAction
         [FPWCSApi2 getSessions][0];
    FPWCSApi2StreamOptions *options = [[FPWCSApi2StreamOptions alloc] init];
    options.name = _remoteStreamName.text;
    options.display = _remoteDisplay;
    NSError *error;
    FPWCSApi2Stream *stream = [session createStream:options error:nil];
    ...
    if(![stream play:&error]) {
        UIAlertController * alert = [UIAlertController
              actionWithTitle:@"Ok"
                       alertControllerWithTitle:@"Failed to play"
          style:UIAlertActionStyleDefault
                           message:error.localizedDescription
        handler:^(UIAlertAction * action) {
                          preferredStyle:UIAlertControllerStyleAlert];
        
     
   UIAlertAction* okButton   = [UIAlertAction
                           }];
        actionWithTitle:@"Ok"
        [alert addAction:okButton];
        [self presentViewController:alert animated:YES completion:nil];
    }
    return stream;
}

6. Остановка воспроизведения видеопотока.

FPWCSApi2Stream stop код

Code Block

language	bash
theme	RDark

- (void)playButton:(UIButton *)button {
    [self changeViewState:button enabledstyle:NO];UIAlertActionStyleDefault
     if ([button.titleLabel.text isEqualToString:@"STOP"]) {
                              if ([FPWCSApi2 getSessions].counthandler:^(UIAlertAction * action) {
            FPWCSApi2Stream *stream;
            for (FPWCSApi2Stream *s in [[FPWCSApi2 getSessions][0] getStreams]) {
       
         if ([[s getName] isEqualToString:_remoteStreamName.text]) {
                    stream = s}];
        
            break[alert addAction:okButton];
        [self presentViewController:alert   animated:YES completion:nil];
    }
    return stream;
}

6. Остановка воспроизведения видеопотока.

FPWCSApi2Stream stop код

Code Block

language	cpp
theme	RDark

- (void)playButton:(UIButton      }*)button {
        [self changeViewState:button enabled:NO];
    if (!stream[button.titleLabel.text isEqualToString:@"STOP"]) {
        if ([FPWCSApi2 getSessions].count) {
     NSLog(@"Stop playing, nothing to stop");
   FPWCSApi2Stream *stream;
            [self onStopped];
            for (FPWCSApi2Stream *s in [[FPWCSApi2 getSessions][0] getStreams]) {
    return;
            }
    if ([[s getName] isEqualToString:_remoteStreamName.text]) {
        NSError *error;
           stream [stream stop:&error];
        } else {
= s;
                NSLog(@"Stop playing, no session")    break;
            [self onStopped];    }
        }
    }
 else   {
        if ([FPWCSApi2 getSessions].count!stream) {
            [self changeViewState:_remoteStreamName enabled:NO];
  NSLog(@"Stop playing, nothing to stop");
      [self playStream];
        } else {[self onStopped];
            NSLog(@"Start playing, no session")    return;
            [self onStopped];
}
         }
   NSError }
}

7. Остановка публикации видеопотока. ViewController.m, line 274

FPWCSApi2Stream stop код

Code Block

language	bash
theme	RDark

- (void)publishButton:(UIButton *)button {
*error;
            [selfstream changeViewState:button enabled:NOstop:&error];
       if ([button.titleLabel.text isEqualToString:@"STOP"]) } else {
          if  ([FPWCSApi2 getSessions].count) {NSLog(@"Stop playing, no session");
            FPWCSApi2Stream *stream[self onStopped];
        }
        for (FPWCSApi2Stream *s in [[FPWCSApi2 getSessions][0] getStreams])...
    }
}

7. Остановка публикации видеопотока. ViewController.m, line 274

FPWCSApi2Stream stop код

Code Block

language	cpp
theme	RDark

- (void)publishButton:(UIButton *)button {
    [self    changeViewState:button enabled:NO];
        if ([[s getName] isEqualToString:_localStreamName.text]) {
                    stream = s;
      button.titleLabel.text isEqualToString:@"STOP"]) {
        if ([FPWCSApi2 getSessions].count) {
            FPWCSApi2Stream  break*stream;
            for (FPWCSApi2Stream *s in }
   [[FPWCSApi2 getSessions][0] getStreams]) {
         }
       if ([[s    if (!streamgetName] isEqualToString:_localStreamName.text]) {
                NSLog(@"Stop publishing, nothing to stop")    stream = s;
                [self onUnpublished]    break;
                return;}
            }
            NSError *error;
            [stream stop:&error];
        } else {
if (!stream) {
                NSLog(@"Stop publishing, nonothing to sessionstop");
                [self onUnpublished];
          }
    } else {return;
        if  ([FPWCSApi2 getSessions].count) {}
            [self changeViewState:_localStreamName enabled:NO]NSError *error;
            [self publishStreamstream stop:&error];
        } else {
            NSLog(@"StartStop publishing, no session");
            [self onUnpublished];
        }
        }...
    }
}

8. Закрытие соединения.

FPWCSApi2Session disconnect код

Code Block

language	bashcpp
theme	RDark

- (void)connectButton:(UIButton *)button {
    [self changeViewState:button enabled:NO];
    if ([button.titleLabel.text isEqualToString:@"DISCONNECT"]) {
        if ([FPWCSApi2 getSessions].count) {
            FPWCSApi2Session *session = [FPWCSApi2 getSessions][0];
            NSLog(@"Disconnect session with server %@", [session getServerUrl]);
            [session disconnect];
        } else {
            NSLog(@"Nothing to disconnect");
            [self onDisconnected];
        }
    } else {
        //todo check url is not empty
        [self changeViewState:_connectUrl enabled:NO];
        [self connect];  ...
    }
}

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Пример iOS-приложения с плеером и стримером

Работа с кодом примера