SnoizeMIDI: Minimal setup to capture messages about midiapps

[krevis]

That looks reasonable. I see you've found the code in SysEx Librarian (SSEMIDIController) that does the same thing.

• Is this in a Mac app, Mac command-line tool, or iOS app?
• Did you call [SMClient sharedClient] early in your app? (For instance in your app delegate's -applicationWillFinishLaunching)
• If you step through in the debugger, does endpoints contain a few objects, or none?

[masche842]

Is this in a Mac app, Mac command-line tool, or iOS app?

A Cocoa Mac app. I used the assistant to scaffold it and just added the MidiController class (printed above).

Did you call [SMClient sharedClient] early in your app? (For instance in your app delegate's -applicationWillFinishLaunching)

No I didn't! Added it to AppDelegate now ... but still no cigar.

If you step through in the debugger, does endpoints contain a few objects, or none?

Yes, it lists all endpoints (the same list that SysexLibrarian has at that point).
I tested with a "real" Midi device earlier, now I've tested with the IAC driver and a (second) SysexLibrarian instance. Works with the first Librarian instance but not with my SysexSniffer.
Content of the first IAC Endoint:

[1] SMSourceEndpoint *  0x600000267400  0x0000600000267400
- SMEndpoint  SMEndpoint    
-- SMMIDIObject  SMMIDIObject    
--- NSObject  NSObject    
--- objectRef MIDIObjectRef 1409035 1409035
--- uniqueID  MIDIUniqueID  -265309521  -265309521
--- ordinal NSUInteger  0 0
--- flags <anonymous struct>    
---- hasCachedName unsigned int:1  1 1
--- cachedName  __NSCFString *  @"Bus 1"  0x00006080004200a0
-- deviceRef MIDIDeviceRef 0 0
-- endpointFlags <anonymous struct>    
-- cachedManufacturerName  NSString *  nil 0x0000000000000000
-- cachedModelName NSString *  nil 0x0000000000000000

One more thing:

When I pause at the end of MidiController.init, send some Midi and continue, the debugger halts at nonretainedDelegate parser:self didReadMessages:messages with EXC_BAD_ACCESS(code=EXC_I386_GPFLT).
Sysex-Librarian does not do that. Maybe I am still missing something?

Thanks for your help!

[krevis]

It sounds like your MidiController is being deallocated before it receives any MIDI events. (To check that, you could override -dealloc and set a breakpoint in the override.)

Is some other object keeping a strong reference to it? The SMPortInputStream won't retain your controller.

If that isn't it, send me your whole Xcdoe project (email [email protected]) and I can take a look.

[masche842]

That did the trick!
It's my first objective-c app and ARC got me right away...

Thanks for your help!