[PD] No jack connections with -noadc

[Roman Haefeli]

Dear Miller

This is what I experience with the audio back-ends of the current git:

-pa
+++
When launching pd with '-pa' (or nothing, for that matter), portaudio
seems to scan all available sound sources. Somehow it tries to connect
to a list of bluetooth devices, that once have been or currently are
connected to my box. Checking every single one takes approx. five
seconds each. The whole 'pd -pa' start process takes 22 seconds on my
box. This is the output:

----
roman at yoyo5:~$ pd -pa
oops: ALSA cards not reported in order?
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
Cannot connect to server socket err = No such file or directory
Cannot connect to server socket
jack server is not running or cannot be started
----

I get the same output and similar lag when starting audacity. This makes
me assume that this behavior is not at all specific to Pd but probably
is exposed by any application using portaudio (or a recent enough
version of portaudio?).

-jack
+++++
* turning DSP on after it has been turned off freezes Pd, when latency
is short (on my box below 20ms).
* turning DSP off still makes Pd disappear from the connections in jack.
Turning DSP off thus means loosing all manually created connections to
other jack clients (which won't be restored, when turning DSP on).
  
-alsa
+++++ 
As with -jack, it's not possible to do [; pd dsp 0, pd dsp 1( without
getting a drop-out. This is still a regression of 0.43 and 0.44. This
worked fine in 0.42.


Regarding the initial question, 'pd -noadc -jack' works, but only if
'-channels X' is also specified. But then, [adc~] does still receive
something.

Roman



On Die, 2012-12-11 at 08:53 -0800, Miller Puckette wrote:
> Hmm.. I've reworked some of the audio again for 0.44 (available in source 
> only so far I'm afraid unless you're running on a Pi :)  so I'll check the
> jack scene and see what I can find...
> 
> cheers
> M
> 
> On Tue, Dec 11, 2012 at 10:29:51AM -0500, Ivica Ico Bukvic wrote:
> > AFAIK there have been some changes to the audio stack and
> > particularly jack in 0.43 branch which have essentially broken jack
> > support in a number of ways. If you are using Linux+jack, my advice
> > would be either to stick to 0.42.x branch or try pd-l2ork...
> > 
> > On 12/11/2012 04:08 AM, Peter P. wrote:
> > >Dear list,
> > >
> > >it seems that pd can only connect to jack when started without a
> > >-noadc flag, ie.
> > >
> > >         pd -noprefs -jack -noadc
> > >
> > >does not work, while
> > >
> > >
> > >          pd -noprefs -jack
> > >
> > >does work. This is Pd-0.43.1 ("test5") compiled 19:10:13 Dec 12 2011,
> > >a vanilla git checkout.
> > >Jack is jackd2 on Debian, version 1.9.8~dfsg.4+20120529git007cdc37-4.1
> > >
> > >No big problem, but puzzling to anyone wondering why jack has stopped
> > >working.
> > >
> > >best, Peter
> > >
> > >_______________________________________________
> > >Pd-list at iem.at mailing list
> > >UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
> > 
> > 
> > -- 
> > Ivica Ico Bukvic, D.M.A
> > Composition, Music Technology
> > Director, DISIS Interactive Sound & Intermedia Studio
> > Director, L2Ork Linux Laptop Orchestra
> > Head, ICAT IMPACT Studio
> > Virginia Tech
> > Department of Music
> > Blacksburg, VA 24061-0240
> > (540) 231-6139
> > (540) 231-5034 (fax)
> > disis.music.vt.edu
> > l2ork.music.vt.edu
> > ico.bukvic.net
> > 
> > 
> > _______________________________________________
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> 
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