Re: [LAD] Handling multiple audio streams [was: Adding a c timer to Kluppe]

From: Patrick Shirkey <pshirkey@email-addr-hidden>
Date: Wed May 05 2010 - 06:48:39 EEST

On 05/04/2010 03:07 PM, Louigi Verona wrote:
> Hey Patrick!
>
> Maybe I should once more make an attempt to contact the original
> kluppe developer. Maybe he'll find some time to reply.
>

Fyi, if possible you should try not to top post on this list.

I doubt that contacting the original developer is the best way to solve
this issue. The main issue is how to write a threaded timer in c. The
original developer may not be experienced enough to know how to do this
effectively either.

It's possible someone on this list has a workable suggestion or even a
code example but it seems everyone is busy at the moment or not
interested in this topic.

Patrick Shirkey
Boost Hardware Ltd

> Louigi.
>
> On Thu, Apr 29, 2010 at 3:10 AM, Patrick Shirkey
> <pshirkey@email-addr-hidden <mailto:pshirkey@email-addr-hidden>> wrote:
>
> Hi,
>
> Just in case anyone has had some time to ponder this problem and
> has forgotten to respond or missed the original request for
> assistance.
>
> I would like to add a timer function to kluppe so that I can add a
> timed delay to the playback start for an individual loop.
>
> There are a couple of problems with the current implementation.
>
> 1: There is an annoying buzz when the loop is paused on three out
> of four pause scenarios. This is probably related to the buffer
> being trapped on pause for some reason.
> 2: With the current implementation using select(), the pause
> affects all running loops.
>
> I tried to work asynchronously with signal and alarm() but that
> was suggested as the wrong method.
>
> Now I am out of my depth as I am not sure how to create an
> asynchronous timer in c that will apply to the kluppe system. For
> example in some other languages there are timers and example code
> already written for this problem which makes it a fairly simple
> procedure to implement. Perhaps there is also something
> fundamental with the kluppe code that makes this problem even more
> difficult. If someone has a suggestion for the correct way to
> handle this problem I am more than happy to code it up and learn
> something new but I am aware that if I have to figure this one out
> by myself it's gonna take some time.
>
> The current test code is here:
> http://djcj.org/code/kluppe-0.6.14-playbackdelay.tar.bz2
>
> The core code can be found at src/common/looperdata.c:1342
>
> To enable the timed playback pause you need to adjust the bottom
> right spinbox in the spinbox grid panel for a specific loop.
>
>
>
>
> Cheers.
>
>
>
> Patrick Shirkey
> Boost Hardware Ltd
>
>
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>

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Received on Wed May 5 08:15:01 2010

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