1.0.0 Requirements, Integration of sound deamon (JACK)

1.0.0 Requirements, Integration of sound deamon (JACK)

[David Sankel]

Hello ALSA developers,

  I was wondering if there is a requirement list for
1.0.0 release of ALSA.  If not, what would be expected
in a 1.0.0 release?  (I've got a few brain/cpu cycles
to spare towards a 1.0.0 release)

  I know the topic of sound deamons has really been
stomped in the ground, but I haven't found any
information about the possible inclusion of the JACK
sound deamon into an alsa release.  Since running JACK
does not lock up any of the sound device files, all
non-JACK-aware programs will act normally while the
deamon is running.

David Sankel
camio@yahoo.com
Electron Consulting

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Re: 1.0.0 Requirements, Integration of sound deamon (JACK)

[Patrick Shirkey]

David Sankel wrote:
> Hello ALSA developers,
> 
>   I was wondering if there is a requirement list for
> 1.0.0 release of ALSA.  If not, what would be expected
> in a 1.0.0 release?  (I've got a few brain/cpu cycles
> to spare towards a 1.0.0 release)
> 
>   I know the topic of sound deamons has really been
> stomped in the ground, but I haven't found any
> information about the possible inclusion of the JACK
> sound deamon into an alsa release.  Since running JACK
> does not lock up any of the sound device files, all
> non-JACK-aware programs will act normally while the
> deamon is running.
> 


Have you used JACK?

AFAIK it definitely requires a pcm. You may have used it on hardware 
that supports multiopen which would explain what you have observed.


-- 
Patrick Shirkey - Boost Hardware Ltd.
For the discerning hardware connoisseur
Http://www.boosthardware.com
Http://www.djcj.org - The Linux Audio Users guide
========================================

"Um...symbol_get and symbol_put... They're
kindof like does anyone remember like get_symbol
and put_symbol I think we used to have..."
- Rusty Russell in his talk on the module subsystem



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Re: 1.0.0 Requirements, Integration of sound deamon (JACK)

[David Sankel]

> Have you used JACK?
> 
> AFAIK it definitely requires a pcm. You may have
> used it on hardware 
> that supports multiopen which would explain what you
> have observed.

Yes, I have used jack.  I meant that it doesn't open
the sound device when it is not being used by a host application.

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Re: 1.0.0 Requirements, Integration of sound deamon (JACK)

[Patrick Shirkey]

David Sankel wrote:
>>Have you used JACK?
>>
>>AFAIK it definitely requires a pcm. You may have
>>used it on hardware 
>>that supports multiopen which would explain what you
>>have observed.
> 
> 
> Yes, I have used jack.  I meant that it doesn't open
> the sound device when it is not being used by a host application.
> 

I'm pretty sure it does. In order to run it needs to claim a pcm device 
(or multiple devices as specified in an .asoundrc). I just tested that 
by starting jackd and then trying to start alsaplayer on the same device 
and jackd blocks alsaplayer until it is shutdown then alsaplayer will start.




-- 
Patrick Shirkey - Boost Hardware Ltd.
For the discerning hardware connoisseur
Http://www.boosthardware.com
Http://www.djcj.org - The Linux Audio Users guide
========================================

"Um...symbol_get and symbol_put... They're
kindof like does anyone remember like get_symbol
and put_symbol I think we used to have..."
- Rusty Russell in his talk on the module subsystem



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Welcome to geek heaven.
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Re: 1.0.0 Requirements, Integration of sound deamon (JACK)

[Andy Lo-A-Foe]

On Sat, Oct 12, 2002 at 07:52:39PM -0700, David Sankel wrote:

> Yes, I have used jack.  I meant that it doesn't open
> the sound device when it is not being used by a host application.

Actually, I think it does. From the moment you start jackd it will open
the playback (and recording, depending on the options) devices. At
least, that's what I see with with jack 0.38.0, and possible newer
releases. 

Andy


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