#import <ReplayKit/ReplayKit.h>

- (IBAction)onLiveButtonPressed:(id)sender {
    [RPBroadcastActivityViewController loadBroadcastActivityViewControllerWithHandler:^(RPBroadcastActivityViewController * _Nullable broadcastActivityViewController, NSError * _Nullable error) {
        self.broadcastAVC = broadcastActivityViewController;
        self.broadcastAVC.delegate = self;
        [self presentViewController:self.broadcastAVC animated:YES completion:nil];
    }];
}


#pragma mark - RPBroadcastActivityViewControllerDelegate

- (void)broadcastActivityViewController:(RPBroadcastActivityViewController *)broadcastActivityViewController didFinishWithBroadcastController:(nullable RPBroadcastController *)broadcastController error:(nullable NSError *)error {

    [self.broadcastAVC dismissViewControllerAnimated:YES completion:nil];

    self.broadcastController = broadcastController;
    [broadcastController startBroadcastWithHandler:^(NSError * _Nullable error) {
        if (!error) {
            self.liveButton.selected = YES;
        } else {
            NSLog(@"startBroadcastWithHandler error: %@", error);
        }
    }];
}

#import <ReplayKit/ReplayKit.h>

@interface BroadcastViewController : UIViewController

@end

...

- (IBAction)onCancelButtonPressed:(id)sender {
    [self userDidCancelSetup];
}

- (IBAction)onOKButtonPressed:(id)sender {
    if (self.accountTextField.text.length == 0
        || self.passwordTextField.text.length == 0
        || self.channelIDTextField.text.length == 0) {
        return;
    }
    [self userDidFinishSetup];
}

#pragma mark - Private

// Called when the user has finished interacting with the view controller and a broadcast stream can start
- (void)userDidFinishSetup {

    NSLog(@"userDidFinishSetup");

    // Broadcast url that will be returned to the application
    NSURL *broadcastURL = [NSURL URLWithString:@"http://broadcastURL_example/stream1"];

    // Service specific broadcast data example which will be supplied to the process extension during broadcast
    NSDictionary *setupInfo = @{@"account" : self.accountTextField.text,
                                @"password" : self.passwordTextField.text,
                                @"channelID" : @(self.channelIDTextField.text.integerValue)};

    // Set broadcast settings
    RPBroadcastConfiguration *broadcastConfig = [[RPBroadcastConfiguration alloc] init];
    broadcastConfig.clipDuration = 5.0; // deliver movie clips every 5 seconds

    // Tell ReplayKit that the extension is finished setting up and can begin broadcasting
    [self.extensionContext completeRequestWithBroadcastURL:broadcastURL broadcastConfiguration:broadcastConfig setupInfo:setupInfo];
}

- (void)userDidCancelSetup {
    // Tell ReplayKit that the extension was cancelled by the user
    [self.extensionContext cancelRequestWithError:[NSError errorWithDomain:@"YourAppDomain" code:-1     userInfo:nil]];
}

#import <ReplayKit/ReplayKit.h>

@interface SampleHandler : RPBroadcastSampleHandler

@end

...


//  To handle samples with a subclass of RPBroadcastSampleHandler set the following in the extension's Info.plist file:
//  - RPBroadcastProcessMode should be set to RPBroadcastProcessModeSampleBuffer
//  - NSExtensionPrincipalClass should be set to this class

@implementation SampleHandler

- (void)broadcastStartedWithSetupInfo:(NSDictionary<NSString *,NSObject *> *)setupInfo {
    // User has requested to start the broadcast. Setup info from the UI extension will be supplied.
    NSLog(@"broadcastStartedWithSetupInfo: %@", setupInfo);
    [[ReplayKitUploader sharedObject] setupWithInfo:setupInfo];
}

- (void)broadcastPaused {
    // User has requested to pause the broadcast. Samples will stop being delivered.
}

- (void)broadcastResumed {
    // User has requested to resume the broadcast. Samples delivery will resume.
}

- (void)broadcastFinished {
    // User has requested to finish the broadcast.
}

- (void)processSampleBuffer:(CMSampleBufferRef)sampleBuffer withType:(RPSampleBufferType)sampleBufferType {
    [[ReplayKitUploader sharedObject] handleSampleBuffer:sampleBuffer withType:sampleBufferType];
}

@end