Re: module-jackdbus-detect in PulseAudio

[Conor Curran]

I use jack PatchBay,

http://www.linuxdsp.co.uk/download/jp1/index.html

Which allows to save your connections and reload them at any time. 
Lash/Ladish provide a more complete solution whereby ontop of restoring 
connections they try to restore each application to its previous state. 
This can be useful when you have many different Jack apps running for 
the one session (which is often the case).

I know the guys at Stanford did something a few years ago called jmess 
which also allows you to store connections but I would recommend the 
link above, lovely UI and very usable. In fact all their plugins are 
worth using, quality dsp.

Conor



On 13/12/10 10:36, David Henningsson wrote:
> module-jackdbus-detect doesn't currently remember it, but I agree it
> would be useful. Perhaps someone else here can answer on how that works,
> if you need lash/ladish or something else, or if qjackctl will do...?

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Re: module-jackdbus-detect in PulseAudio

[David Henningsson]

On 2010-12-10 12:30, Antoine Thomas wrote:
>
>
> 2010/12/10 David Henningsson  >
>
> Hello Ubuntu Studio and Audio developers,.
>
> * Anybody against me changing the default of qjackctl in Natty to have
> this checkbox checked?
>
> Seems good.
>
>
> The other open question, where I'm not sure, is about the default, and
> I'd like your opinion on the matter. We have these options:
>
> 1) We start it by default via the default.pa 
> startup script.
>
> 2) We do not start automatically when PulseAudio starts, but add a
> checkbox to the paprefs application that optionally starts this module.
>
> In Ubuntu Studio, would be good to have it loaded via the startup
> script. not everybody use the paprefs gui.
>
> For both versions, there is this question as well:
>
> a) We have autoconnect=true, which means that the PA Jack sink will
> connect to the "system"/soundcard sink of JACK
>
> b) We have autoconnect=false, which means there will be a PA Jack sink
> but you'll have to connect it to something yourself.
>
> Is there a way so Jack or Pulse can remember how the PA source and sink
> are patched in jackd ?

module-jackdbus-detect doesn't currently remember it, but I agree it 
would be useful. Perhaps someone else here can answer on how that works, 
if you need lash/ladish or something else, or if qjackctl will do...?

-- 
David Henningsson, Canonical Ltd.
http://launchpad.net/~diwic

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Re: module-jackdbus-detect in PulseAudio

[David Henningsson]

On 2010-12-10 12:01, Tim Cook wrote:
> Hi David,
>
> I just did the upgrade but I do not see any JACK server or sink option
> in pamanger after starting JACK.  I did set Dbus on and restarted.  I
> also do not see anything JACK related in PA modules list.
>
> What magic am I missing? :)
>
> BTW: This is with the new generic kernel.

Hmm, it seems like the module is not autostarted at all in the Natty 
version (since we haven't yet decided on how to start it...).

To test currently you'll have to manually run "pacmd load-module 
module-jackdbus-detect", or add the line "load-module 
module-jackdbus-detect" to /etc/pulse/default.pa (e g somewhere below 
module-udev-detect).

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http://launchpad.net/~diwic

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Re: module-jackdbus-detect in PulseAudio

[Ronan Jouchet]

On 10-12-10 06:30 AM, Antoine Thomas wrote:
>
>
> 2010/12/10 David Henningsson  >
> * Anybody against me changing the default of qjackctl in Natty to have
> this checkbox checked?
>
> Seems good.

Seems good yes

> The other open question, where I'm not sure, is about the default, and
> I'd like your opinion on the matter. We have these options:
>
> 1) We start it by default via the default.pa 
> startup script.
>
> 2) We do not start automatically when PulseAudio starts, but add a
> checkbox to the paprefs application that optionally starts this module.
>
> In Ubuntu Studio, would be good to have it loaded via the startup
> script. not everybody use the paprefs gui.

1) Default at startup

> For both versions, there is this question as well:
>
> a) We have autoconnect=true, which means that the PA Jack sink will
> connect to the "system"/soundcard sink of JACK
>
> b) We have autoconnect=false, which means there will be a PA Jack sink
> but you'll have to connect it to something yourself.
>
> Is there a way so Jack or Pulse can remember how the PA source and sink
> are patched in jackd ?

If the the answer to Toine question above is "yes", then do this, else 
a) autoconnect=true

Thanks for this work David :)
Bye,

Ronan Jouchet

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Re: module-jackdbus-detect in PulseAudio

[Antoine Thomas]

2010/12/10 David Henningsson 

> Hello Ubuntu Studio and Audio developers,.
>
> * Anybody against me changing the default of qjackctl in Natty to have
> this checkbox checked?
>

Seems good.

>
> The other open question, where I'm not sure, is about the default, and
> I'd like your opinion on the matter. We have these options:
>
> 1) We start it by default via the default.pa startup script.
>
> 2) We do not start automatically when PulseAudio starts, but add a
> checkbox to the paprefs application that optionally starts this module.
>
> In Ubuntu Studio, would be good to have it loaded via the startup script.
not everybody use the paprefs gui.


> For both versions, there is this question as well:
>
> a) We have autoconnect=true, which means that the PA Jack sink will
> connect to the "system"/soundcard sink of JACK
>
> b) We have autoconnect=false, which means there will be a PA Jack sink
> but you'll have to connect it to something yourself.
>
> Is there a way so Jack or Pulse can remember how the PA source and sink are
patched in jackd ?

Toine
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Re: module-jackdbus-detect in PulseAudio

[Tim Cook]

Hi David,

I just did the upgrade but I do not see any JACK server or sink option
in pamanger after starting JACK.  I did set Dbus on and restarted.  I
also do not see anything JACK related in PA modules list.  

What magic am I missing? :)

BTW: This is with the new generic kernel.

--Tim


On Fri, 2010-12-10 at 09:36 +0100, David Henningsson wrote:
> Hello Ubuntu Studio and Audio developers,
> 
> A week or two ago I wrote a new PulseAudio module that detects the 
> presence of JACK server, and adds a sources and a sink when JACK is 
> started. It is now being shipped in Natty since yesterday [1].
> 
> This version uses JACK's dbus interface to detect server being started 
> or stopped, i e /usr/bin/jackdbus instead of /usr/bin/jackd.
> If you use qjackctl to control the server, make sure that you check the 
> checkbox "Enable D-Bus interface" under Setup -> Misc.
> 
> * Anybody against me changing the default of qjackctl in Natty to have 
> this checkbox checked?
> 
> The other open question, where I'm not sure, is about the default, and 
> I'd like your opinion on the matter. We have these options:
> 
> 1) We start it by default via the default.pa startup script.
> 
> 2) We do not start automatically when PulseAudio starts, but add a 
> checkbox to the paprefs application that optionally starts this module.
> 
> For both versions, there is this question as well:
> 
> a) We have autoconnect=true, which means that the PA Jack sink will 
> connect to the "system"/soundcard sink of JACK
> 
> b) We have autoconnect=false, which means there will be a PA Jack sink 
> but you'll have to connect it to something yourself.
> 
> (The same thing applies to the PA Jack Source, of course.)
> 
> -- 
> David Henningsson, Canonical Ltd.
> http://launchpad.net/~diwic
> 
> [1] Perhaps one should wait a day or two before upgrading though, see 
> https://lists.ubuntu.com/archives/ubuntu-devel/2010-December/032224.html
> 

-- 
***
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