Subject: Re: Re: [linux-audio-dev] Fwd: Opinions on running VST or DirectX plugins
From: Jesse Chappell (jesse_AT_essej.net)
Date: Wed Oct 23 2002 - 22:12:55 EEST
<chrismorgan_AT_rcn.com> wrote on Wed, 23-Oct-2002:
> Just so people don't think the code has fallen off of the face of the planet ;-)
>
> Currently I'm working on two things with the wine jack driver ,
> one of which needs to be complete before I submit the patch, the
> other can wait until some ongoing jack support is complete.
>
> 1. The driver currently closes and opens jack connections synchronously
> with wodOpen and wodClose. The problem is that jack doesn't actually close
> the clients right away, sometimes it can take many seconds for this to occur.
> Apparently this is a known jack bug but I'm also wondering if this is a problem
> in wines pthread implementation of conditions(there is no support for them right now).
> Either way I've implemented a workaround that basically consists of opening jack
> connections and marking them as in-use or available as apps open or close audio devices.
> This behavior can be enabled/disabled via a define in the driver. This isn't complete
> yet but it should be soon and would prevent the lockups and delays that currently
> make things a pain.
If you do a jack_deactivate() just before a jack_close(), it
pretty much eliminates the delay you're seeing. Jack should
probably do this itself in the implementation of jack_close()....
jlc
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