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Speech dispatcher emacspeak server request for help



Bart,

Carefully study the select calls in the TCL  servers. Notice that
you can select on multiple handles,

I dont know how speech-dispatcher responds to your calls, but
 a good place to understand the intricacies of getting snappy
 response when using select is to study its use in the dtk-exp vs
 outloud servers.

Dtk-exp is heavy on select -- outloud -- being  a software TTS
engine, provides a "sync" call that I implemented using the
Viavoice API.
-- 
Best Regards,
--raman

-- 
Best Regards,
--raman


On 10/1/10, Bart Bunting <bart@ursys.com.au> wrote:
> Hi all,
>
> As I said in a previous post I am working on a speech dispatcher speech
> server for emacspeak.
>
> I have a prototype that works fairly well.  It can be checked
> out from:
> git clone git://github.com/bartbunting/espd.git
>
> I am running into some trouble whilst trying to implement correct
> queueing so that we only send a small amount of text to speech
> dispatcher at a time.  This should give more snappy stopping of speech
> when large amounts are being spoken.
>
> I have the basic queue working, it is trivial.  However the next step I
> was trying to make was to implement a select loop.  My idea was that if
> we select on STDIN and something else possibly a pipe I could use speech
> dispatcher callbacks and write messages to the pipe when speech
> dispatcher is ready for more text.
>
> So the first bit I am trying to get to work is simply inserting the
> select call into the main while loop of the server and selecting only on
> STDIN.
>
> This appears to work but is subtly failing.  When run from the
> commandline I can't get it to fail however when running as a server to
> emacspeak it appears to enter a state where the latest command isn't
> read.
>
> The effect is that for example if you type you hear the next to last key
> press or thing spoken.  When I examine the logs I'm producing in
> /tmp/espd.log All I can see is that we are waiting on the select loop
> and it appears that emacspeak hasn't sent the command yet.  I don't of
> course believe that this is the case.
>
> I've been pulling my hair out over this one for a couple of days and
> have reached the stage where I'm certain it's something obvious but I so
> far haven't been able to find it.
>
> I'm not going to give up but thought I'd ask here if anyone who perhaps
> knows python better than I do could take a look and see if I'm just
> doing something stupid.
>
> If you have the inclination and time to take a look you can checkout the
> "select" branch
> from the git url above and take a look.  Do be sure to try out the
> master branch first so at least you get a feel for how it works when it
> is working :).
>
> Cheers
>
> Bart
>
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>

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