/*

    Copyright (C) 2016 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    The application delegate.

 */

#import "AppDelegate.h"

@import AVFoundation;

@interface AppDelegate ()

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    NSError *error = nil;

    // Configure the audio session

    AVAudioSession *sessionInstance = [AVAudioSession sharedInstance];

    // our default category -- we change this for conversion and playback appropriately

    [sessionInstance setCategory:AVAudioSessionCategoryPlayback error:&error];

    // we don't do anything special in the route change notification

    [[NSNotificationCenter defaultCenter] addObserver:self

                                             selector:@selector(handleAudioSessionRouteChangeNotification:)

                                                 name:AVAudioSessionRouteChangeNotification

                                               object:sessionInstance];

    // the session must be active for offline conversion

    [sessionInstance setActive:YES error:&error];

    return YES;

}

// MARK: Notification Handler.

- (void)handleAudioSessionRouteChangeNotification:(NSNotification *)notification {

    AVAudioSessionRouteChangeReason reasonValue = [[notification.userInfo valueForKey:AVAudioSessionRouteChangeReasonKey] unsignedIntegerValue];

    AVAudioSessionRouteDescription *routeDescription = [notification.userInfo valueForKey:AVAudioSessionRouteChangePreviousRouteKey];

    NSLog(@"Route change:");

    switch (reasonValue) {

        case AVAudioSessionRouteChangeReasonNewDeviceAvailable:

            NSLog(@"     NewDeviceAvailable");

            break;

        case AVAudioSessionRouteChangeReasonOldDeviceUnavailable:

            NSLog(@"     OldDeviceUnavailable");

            break;

        case AVAudioSessionRouteChangeReasonCategoryChange:

            NSLog(@"     CategoryChange");

            NSLog(@" New Category: %@", [[AVAudioSession sharedInstance] category]);

            break;

        case AVAudioSessionRouteChangeReasonOverride:

            NSLog(@"     Override");

            break;

        case AVAudioSessionRouteChangeReasonWakeFromSleep:

            NSLog(@"     WakeFromSleep");

            break;

        case AVAudioSessionRouteChangeReasonNoSuitableRouteForCategory:

            NSLog(@"     NoSuitableRouteForCategory");

            break;

        default:

            NSLog(@"     ReasonUnknown");

    }

    NSLog(@"Previous route:\n");

    NSLog(@"%@", routeDescription);

}

@end