Re: Communicate with AudioUnit from C program?
Re: Communicate with AudioUnit from C program?
- Subject: Re: Communicate with AudioUnit from C program?
- From: Igor Clark <email@hidden>
- Date: Fri, 30 Mar 2018 23:31:46 +0100
No worries, thanks for the info, appreciate it.
> On 30 Mar 2018, at 17:43, Paul Davis <email@hidden> 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@hidden> 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@hidden> 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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>>
>
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