No worries, thanks for the info, appreciate it.

> On 30 Mar 2018, at 17:43, Paul Davis <[email protected]> wrote:
> 
> Sorry, that's not really feasible. I wasn't citing Ardour as a sensible place 
> to find example code - it's a huge program. I was just citing as proof that 
> using AU's in a command-line GUI-less application works fine. 
> 
> If you really want to look, libs/ardour/audio_unit.cc is where 99% of our 
> interaction with the DSP side of an AU plugin happens, but I still don't 
> think you'll find it easy to locate the stuff you want.
> 
>> On Fri, Mar 30, 2018 at 12:08 PM, Igor Clark <[email protected]> wrote:
>> Hey, thanks Paul, that's great. I'm looking at the Ardour Github repo now, 
>> obviously it's pretty large - would you be able to point me to any 
>> particularly relevant parts to dig into? Especially where the MIDI aspects 
>> are concerned?
>> 
>> Cheers!
>> 
>> 
>>> On 30/03/2018 15:22, Paul Davis wrote:
>>> The "headless" version of Ardour (all the functionality, no GUI) certainly 
>>> does this. Its not a problem. We don't use XCode or any Apple tools except 
>>> their somewhat ancient "utility libs" which are just wrappers around AU to 
>>> make it slightly more C++ idiomatic.
>>> 
>>>> On Fri, Mar 30, 2018 at 9:10 AM, Igor Clark <[email protected]> wrote:
>>>> Hi all,
>>>> 
>>>> Is it possible to load an existing AudioUnit MIDI plugin and interact it 
>>>> with it from a CLI program written in C? I'd like to be able to use 
>>>> commercial plug-ins in my MIDI processing app.
>>>> 
>>>> I'm comfortable with how to communicate between C & C++ using 'extern' 
>>>> etc, so that's not the main issue. Rather, I'm wondering whether it's 
>>>> possible to have a C CLI app that loads the AU and sends MIDI passages to 
>>>> it, so that the AU processes the data (ideally async) and then returns its 
>>>> result back to the C app. I guess it's effectively writing an AU host app, 
>>>> but does that all have to be done in Xcode, or is it possible to do it as 
>>>> a straight C/C++ program using clang/llvm at the shell?
>>>> 
>>>> Also, the AU Hosting Guide docs talk about I/O, Mixer and Effect units - 
>>>> is there any other material that focuses on how to do MIDI in AU? Or is a 
>>>> adaptor/translator layer necessary?
>>>> 
>>>> Thanks for any pointers,
>>>> Igor
>>>> 
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