csound and glade / pygtk

[Jean Piché]

From: James Bergstra <james.bergstra at umontreal.ca>
Subject: Re: Fwd: csound and glade / pygtk
To: devel at laptop.org
Date: Fri, 29 Jun 2007 12:24:07 -0400
User-Agent: Mutt/1.4.2.1i
Message-ID: <20070629162407.GA16529 at grieg.iro.umontreal.ca>


You're right that there are many good ways to make a GUI app around  
csound. In
TamTam, we are using csound as a sound rendering library, within a  
pthread that
writes directly to ALSA.  These things are controlled by a C++ python  
module
that we import into TamTam.

Without a clear idea of the approach you've taken, or the problems  
you are
facing, I venture that the following tip:

If you are using multiple threads of python code, you should be aware  
of the
global interpeter lock (often called GIL).  To prevent gtk from  
hogging the GIL
while there are no events to handle, you might want to explore the  
functions
threads_init(), threads_enter(), and threads_leave() in gdk


James



     From: "dietmar offenhuber" <dietmar at media.mit.edu>
>     Date: June 29, 2007 11:44:02 AM EDT (CA)
>     To: ! devel at laptop.org
>     Subject: csound and glade / pygtk
>
>     hi,
>
>     i am still having some trouble building a pyGTK interface for a  
> csound
>     application - a simple one, basically just as a replacement for  
> FLTK
>     widgets, which are not supported on the laptop. i am aware that  
> there are
>     multiple approaches at the moment, including the csound server  
> etc.
>
>     the csound event and the pygtk interface currently run on  
> seperate threads,
>     but they interfere with each other - any activity in the  
> interface causes
>     csou! nd to sto r anyone has some examples of similar  
> applications running
>     on the laptop?
>
>     best,
>     dietmar
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