[PD] [pdconv16_r] Expanding abstractions & Compiling Vanilla Patches As Objects (Gen~?)

Pierre Guillot guillotpierre6 at gmail.com
Tue Nov 1 11:42:02 CET 2016


Hi Alexandre,

> I wonder if a thing like libpd could work as turning a vanilla patch into
a
> compiled object to be used inside pd... that'd be something like gen~ in
> max/msp.

Can you be more specific ? For the moment, I think it would be equivalent
to use an abstraction or the object [pd~] (libpd loads dynamically a patch
so I guess that the execution of the patch cannot be optimized and except
if the patch has been be somehow included inside the binary, you'll have to
share the patch with the object). For me, the main advantage of gen~ is
that it generates code that can be used inside an application but libpd
already offers this feature. So what would be the advantage?

> A - being able to retrieve control data from [inlet~]

I did it in the Cicm Wrapper but it was pretty tricky. If you use the
object [hoa.process~], you can send messages via a signal inlet for
example. I'm not very proud of this because I had to hack a bit the inlet
class. Now, I don't know if I must remove this feature or keep it...
Perhaps somebody could tell/remind us if there is a reason why signal
inlets can't receive messages.

> B - being able to know if a signal is connected to [inlet~]

I also did it in the Cicm Wrapper, perhaps this feature could be included
in the "m_pd.h" interface because for the moment you need to include
"g_canvas.h" and "m_imp.h". Anyway, if you want a simple code that shows
how to do it, I have an example
<https://github.com/pierreguillot/pd-dummy/blob/master/src/connected_tilde.c>
in my dummy library.

Cheers
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