Cinder + CoreMidi sketch

gistfile1.m

CinderCoreMidi.h

class CinderCoreMidi
{
public:
  static void init();
	static void destroy();
};

CinderCoreMidi.cpp

// 
// Internal to this file pgmidi stuff
//
@interface CoreMidiDelegate <PGMidiDelegate, PGMidiSourceDelegate>
{  
}

@property (strong, nonatomic) PGMidi* midi;

@end

@implementation CoreMidiDelegate

-(id) init
{
    self = [super init];
    if (self != nil)
    {
    	self.midi = [[PGMidi alloc] init];
    	self.midi.delegate = self;
    	[self attachToAllExistingSources];
    }
    return self;
}

- (void) attachToAllExistingSources
{
  for (PGMidiSource *source in self.midi.sources)
  {
    source.delegate = self;
  }
}

- (void) midi:(PGMidi*)midi sourceAdded:(PGMidiSource *)source
{
  source.delegate = self;
}

- (void) midi:(PGMidi*)midi sourceRemoved:(PGMidiSource *)source
{ 
}

- (void) midi:(PGMidi*)midi_param destinationAdded:(PGMidiDestination *)destination
{
}

- (void) midi:(PGMidi*)midi destinationRemoved:(PGMidiDestination *)destination
{
}

- (void) midiSource:(PGMidiSource*)midi midiReceived:(const MIDIPacketList *)packetList
{
  NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
  const MIDIPacket *packet = &packetList->packet[0];
  for (int i = 0; i < packetList->numPackets; ++i)
  {
  	// Send packets to Cinder somehow, remember that this is called in another thread, so you'll
  	// need to make it threadsafe with Grand Central Dispatch, or pthread primitives etc..    
    packet = MIDIPacketNext(packet);
  }
  [pool release];
}


@end

//
// C++ Cinder interface
//
static CoreMidiDelegate* cm_delegate = nil;

void CinderCoreMidi::init()
{
	cm_delegate = [[CoreMidiDelegate alloc] init];
	[cm_delegate retain];
}

void CinderCoreMidi::destroy()
{
	[cm_delegate release];
}