InterAppAudioHost/InterAppAudioHost/UI/PublishedEffectsViewController.mm

/*
     File: PublishedEffectsViewController.mm
 Abstract: 
  Version: 1.1.2
 
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 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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 */
 
#import "PublishedEffectsViewController.h"
#import <CoreFoundation/CFNotificationCenter.h>
 
@implementation PublishedEffectsViewController
@synthesize delegate = _delegate;
 
#pragma mark - Initialization / Deallocation
- (void) viewDidLoad {
    [super viewDidLoad];
    
    NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
    [nc addObserverForName:(NSString *)kAudioComponentRegistrationsChangedNotification  object:nil queue:nil usingBlock: ^(NSNotification *note) {
        [self refreshAUList];
        NSIndexSet *sections = [NSIndexSet indexSetWithIndex: 0];
        [publishedEffectsTable reloadSections: sections withRowAnimation: UITableViewRowAnimationAutomatic];
    }];
    
    _publishedEffects = [[NSMutableArray alloc] init];
    publishedEffectsTable.layer.borderWidth = 2;
    publishedEffectsTable.layer.borderColor = [[UIColor blackColor] CGColor];
    
    [self refreshAUList];
}
 
- (void) dealloc {
    [publishedEffectsTable release];
    [_publishedEffects release];
    [super dealloc];
}
 
- (void) refreshAUList {
    [_publishedEffects removeAllObjects];
    
    AudioComponentDescription searchDesc = { 0, 0, 0, 0, 0 };
    AudioComponent comp = NULL;
    while (true) {
        comp = AudioComponentFindNext(comp, &searchDesc);
        if (comp == NULL) break;
        
        AudioComponentDescription desc;
        if (AudioComponentGetDescription(comp, &desc)) continue;
        
        switch (desc.componentType) {
            case kAudioUnitType_RemoteEffect:
            {
                RemoteAU *rau = [[RemoteAU alloc] init];
                rau->_desc = desc;
                rau->_comp = comp;
                rau->_image = [AudioComponentGetIcon(comp, 32) retain];
                
                AudioComponentCopyName(comp, (CFStringRef *)&rau->_name);
                
                [_publishedEffects addObject: rau];
            }
                break;
        }
    }
}
 
#pragma mark - Actions
- (IBAction) toggleDone:(id) sender {
    [self.delegate closeView];
}
 
#pragma mark - Table view data source
- (NSInteger) numberOfSectionsInTableView:(UITableView *) tableView {
    return 1;
}
 
- (NSInteger) tableView:(UITableView *) tableView numberOfRowsInSection:(NSInteger) section {
     return [_publishedEffects count];
}
 
- (UITableViewCell *) tableView:(UITableView *) tableView cellForRowAtIndexPath:(NSIndexPath *) indexPath {
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    
    // Configure the cell...
    RemoteAU *rau = [_publishedEffects objectAtIndex: [indexPath indexAtPosition:1]];
    
    cell.imageView.image = rau->_image;
    cell.textLabel.text  = rau->_name;
    return cell;
}
 
- (void) tableView:(UITableView *) tableView didSelectRowAtIndexPath:(NSIndexPath *) indexPath {
    RemoteAU *rau = [_publishedEffects objectAtIndex: [indexPath indexAtPosition:1]];
    [AUDIO_ENGINE addRemoteAU:rau];
    [self.delegate closeView];
}
 
@end