Re: connecting pd and octave

[Driss Ghaddab]

Franz Zotter wrote:
> Hello
>
> I would like to connect pd (PureData, Miller Puckett, real-time audio 
> programming software) to octave. Therefore I am looking for following 
> features:
> - sending arrays/matrices(zexy-lib) from pd to an octave workspace variable
> - sending an octave array to a pd table/matrix(zexy-lib) as message
> - calling octave functions/scripts/commands sending a message from pd
>
> I already tried to call octave from pd using the "shell" pd-external running 
> "konsole -e octave myscript.m" and storing my pd data into an octave matrix 
> file.

Hi,

I'm currently finishing a framework that may interest you.  It is called 
"Concurrent Modules for GNU Octave", or CMO 
(http://driss.ghaddab.free.fr/cmo/).  It provides the following 
functionalities:

- a way to create modules that are run in a separate thread along Octave 
(by providing an abstract class from which you would derive your own 
module).  A module communicates with Octave's thread by using a command 
pipe and an event queue. The base class implements all necessary methods 
for the communication.

- a way to create objects related to the module by providing an abstract 
object class.  The objects are accessed from within Octave by using a 
object-oriented syntax: object.property = value; object.method(arg) etc...

- a library to manage the modules and the event queue.

The event queue is queried by Octave when it is idl; and when an event 
is present, a user-defined callback is run by Octave.

This framework aims to provide the basis to implement matlab-compatible 
  GUI functions to create user-interfaces.  Currently, the framework is 
90% finished, and a sample timer module (with same functionalities are 
matlab's one) is provided.

So, for your specific problem, you still would have to develope a module 
that communicates with pd and use CMO to handle the communication with 
GNU Octave and the CMO event queue.

The web page currently holds an old version with its related doxygen 
documentation. Many things have changed and I will provide a GNU arch 
mirror in the coming days. This will be announced to the relevant Octave 
mailing list.

This software is licensed under the GPL v2 license (or newer).
Cheers,



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