AudioUnitRender result -10867
=============================


- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
	if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {
        
        [self configureAVAudioSession];

		//additional stuff here

        [self initSoundBanks];
        
		//additional stuff here
		
		[self initSampler];

	}
	return self;
}


- (void) configureAVAudioSession {
    
    AudioStreamBasicDescription asbd = [AEAudioController nonInterleaved16BitStereoAudioDescription];
    asbd.mSampleRate = 44100; //session.sampleRate;
    
    float size = 0.005f;
    self.audioController = [[AEAudioController alloc] initWithAudioDescription:asbd inputEnabled:NO];
    _audioController.preferredBufferDuration = size;
    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(audioRouteChangeListenerCallback:) name:AVAudioSessionRouteChangeNotification object:nil];
    
    [_audioController start:NULL];
    
    [_audioController setMasterOutputVolume:0.95];
    
    groupPemade = [_audioController createChannelGroup];
    groupKantil = [_audioController createChannelGroup];
    groupClick = [_audioController createChannelGroup];
    
    audioOn = true;
}


- (void)initSoundBanks {
    
    soundBankPlayer[0] = [[SoundBankPlayer alloc] initWithAudioController:_audioController];
    [soundBankPlayer[0] setSoundBank:@"Gender"];
    
    soundBankPlayer[1] = [[SoundBankPlayer alloc] initWithAudioController:_audioController];
    [soundBankPlayer[1] setSoundBank:@"Gender"];
    
    soundBankPlayer[2] = [[SoundBankPlayer alloc] initWithAudioController:_audioController];
    [soundBankPlayer[2] setSoundBank:@"Gender"];
    
    soundBankPlayer[3] = [[SoundBankPlayer alloc] initWithAudioController:_audioController];
    [soundBankPlayer[3] setSoundBank:@"Gender"];
    
    soundBankPlayer[4] = [[SoundBankPlayer alloc] initWithAudioController:_audioController];
    [soundBankPlayer[4] setSoundBank:@"Drums"];
    
    audioOn = true;
}


- (void)initSampler{
    [soundBankPlayer[0] initSampler:groupPemade];
    [soundBankPlayer[1] initSampler:groupPemade];
    [soundBankPlayer[2] initSampler:groupKantil];
    [soundBankPlayer[3] initSampler:groupKantil];
    [soundBankPlayer[4] initSampler:groupClick];
    
    [_audioController setVolume:0.95 forChannelGroup:groupPemade];
    [_audioController setVolume:0.85 forChannelGroup:groupKantil];
    [_audioController setVolume:1.0 forChannelGroup:groupClick];
    
    [soundBankPlayer[0] setPan:-0.4];
    [soundBankPlayer[1] setPan:0.4];
    [soundBankPlayer[2] setPan:-0.4];
    [soundBankPlayer[3] setPan:0.4];
}


Class SoundBankPlayer
=====================

- (id)initWithAudioController:(AEAudioController *)audioController {
    if ((self = [super init])) {
        _audioController = audioController;
        _initialized = NO;
        _soundBankName = @"";
    }
    
    return self;
}

- (void)setSoundBank:(NSString *)newSoundBankName {
    if (![newSoundBankName isEqualToString:_soundBankName])	{
        _soundBankName = [newSoundBankName copy];
        
        [self loadAUPreset:_soundBankName];
    }
}

- (void)loadAUPreset:(NSString *)filename {
    NSString *path = [[NSBundle mainBundle] pathForResource:filename ofType:@"aupreset"];
    _aupreset = [NSMutableDictionary dictionaryWithContentsOfFile:path];
}


- (void)initSampler:(AEChannelGroupRef)group {
    AudioComponentDescription component = AEAudioComponentDescriptionMake(kAudioUnitManufacturer_Apple,
                                                                          kAudioUnitType_MusicDevice,
                                                                          kAudioUnitSubType_Sampler);
//    NSError *error = NULL;
    
    _sampler = [[AEAudioUnitChannel alloc]
                initWithComponentDescription:component
//                audioController:_audioController
                preInitializeBlock:^(AudioUnit samplerUnit){
                   
                   // Get the type of reference we need (NSDictionary is a CFPropertyList)
                   CFPropertyListRef presetPropertyList = (__bridge CFPropertyListRef)(_aupreset);
                   // Set the class info property for the Sampler unit using the property list as the value.
                   AudioUnitSetProperty(samplerUnit,
                                        kAudioUnitProperty_ClassInfo,
                                        kAudioUnitScope_Global,
                                        0,
                                        &presetPropertyList,
                                        sizeof(CFPropertyListRef)
                                        ); // should rightly be checking for an error here... took it out for demo
               }
//               error:&error
                ];
    if (_sampler) {
        [_audioController addChannels:@[_sampler]];
        [_audioController addChannels:@[_sampler] toChannelGroup:group];
    }
    _initialized = YES;
}