[PD-dev] MIDI output devices

[Padraig Kitterick]

> Padraig Kitterick wrote:
> 
>> What I would like to be able to do is to use the device which is 
>> selected in PD's midi settings. I've searched the lists but can't seem 
>> to find anything related to this. Could anyone tell me how I do this?
> 
> 
> That's exactly the device you get when you read/write midi. Am I missing 
> something?

That's what I expected too but no matter what I tried it would never 
send the midi sysex messages. However, if I added midiOutOpen() and 
midiOutClose() functions (which I shouldn't have to do as PD will have 
already opened the midi device) it worked fine.

At first I thought it was because the code was in an external but today 
I patched the 0.37-1test6 branch and the behaviour was the same: sending 
the messages without first opening the device didn't work. I had to 
explicitly open and close the device, which also requires I specify a 
device number...

As far as I can tell, it all comes down to the midi device handle. 
Calling the midiOutOpen() sets up the handle to that particular midi 
device. When I patched the source I made sure I was using the same 
handle as the other midi functions in the source too so it should work fine.

Just to let you know: the sys_putmidibyte() function which is 
implemented in 0.37-1test6 is a very similar function (using 
midiOutShortMsg() instead of midiOutLongMsg()) and it doesn't work 
either. My guess is that both are using the wrong device handle, or that 
the handle hasn't been set.

_Padraig

> Or are you expecting the device to identify itself the way 
> usb and firewire peripherals do?
> 
> Martin
> 
> 
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