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List:       xaudio-sdk
Subject:    Re: Python
From:       nirva () ishiboo ! com (Danny Dulai)
Date:       1999-10-02 7:46:04
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On 10/01/99, Bryan Fordham said:
>I'm trying to use python to control xaudio.  Looking at the source to the
>perl examples, I did (what I thought was) basically the same thing: opened a
>pipe to rxaudio.
>
>    import popen2
>    r,w=popen2.popen2('rxaudio')
>    r.readline()
>
>Code like the above returns the message the rxaudio is up and running.  But
>I can not seem to send any commands to it.  Nothing; and I can't even get an
>error message back, even when I send bad commands on purpose.
>
>Any help would be appreciated

I don't know Python, but the popen() libc function can only be used for
reading or writing, but not both (portably).

you need to open it for both reading and writing, so 2 pipes, a fork, and
an exec is a way to do this. popen() is required to do at least one pipe,
but not both. you are probably experiencing that limitation. maybe you can
do the fork and pipes and exec yourself.


-- 
___________________________________________________________________________
Danny Dulai                                           Feet. Pumice. Lotion.
http://www.ishiboo.com/~nirva/                            nirva@ishiboo.com
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