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Basic MIDI sequence question...
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Basic MIDI sequence question...


  • Subject: Basic MIDI sequence question...
  • From: Ben <email@hidden>
  • Date: Thu, 17 Nov 2011 13:13:44 +0000

Hi, I'm new to carbon. 
Could someone please have a look at the code below tell me what I'm doing wrong please.  When I open the app I'm expecting to see the word "FIRE" twice ,and midi information showing within separate app called "Midi Monitor" …. but I get neither. 



#import "AudioToolbox/MusicPlayer.h"


void musicSequenceUserCallback (
                                void                      *inClientData,
                                MusicSequence             inSequence,
                                MusicTrack                inTrack,
                                MusicTimeStamp            inEventTime,
                                const MusicEventUserData  *inEventData,
                                MusicTimeStamp            inStartSliceBeat,
                                MusicTimeStamp            inEndSliceBeat
                                )
{
NSLog(@"FIRE");
}

@implementation MyAppDelegate

@synthesize window = _window;
@synthesize viewController = _viewController;

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

    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];
    
    
    NewMusicPlayer(&musicPlayer);
    NewMusicSequence( &musicSequence);
    MusicSequenceNewTrack(musicSequence, &track);
 
     MIDINoteMessage messageA, messageB;

    messageA.channel = 1;
    messageA.note = 60;
    messageA.velocity = 0x7f;
    messageA.duration = 1.0;
    
    messageB.channel = 1;
    messageB.note = 62;
    messageB.velocity = 0x7f;
    messageB.duration = 1.0;
    
    MusicTrackNewMIDINoteEvent(track, 0, &messageA);
    MusicTrackNewMIDINoteEvent(track, 1, & messageB);
    
    
    MusicSequenceSetUserCallback (
                                           musicSequence,
                                           musicSequenceUserCallback,
                                           self
                                           );
    
    MusicPlayerStart(musicPlayer);
  


    return YES;

    
}


- (void)dealloc
{
    [_window release];
    [_viewController release];
    [super dealloc];
}

@end


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