AudioToolbox.m

- (AudioFileID)loadAudioFile:(NSString *)audioPath {
    AudioFileID audioFile;
    OSStatus status = AudioFileOpenURL(
                              (__bridge CFURLRef _Nonnull)([NSURL fileURLWithPath:audioPath]),
                              kAudioFileReadPermission,
                              0,
                              &audioFile);
    if (status != noErr) {
        NSLog(@"Load file failed %d", status);
        return nil;
    }

    return audioFile;
}