I am just a regular user of Linux audio but I am interested in the
history of how software was developed and what problems they were meant
to solve on Linux eg OSS, ALSA, Jack etc and more recently PipeWire.
Is there such a documented history already in existence on the web
somewhere? (ie NOT a HOWTO) - that would be intelligible to non-audio
I am interested in learning and understanding more about audio and
perhaps making better use of my system (Fedora 34 + Wayland soon to be
updated to 35).
PO Box 896
Cowra NSW 2794
My QJackCtl Patchbay doesn't work any more and it's obvious there are
new ways to get similar functionality with WirePlumber, but a little
example would help. I seem to want to pipe the output of pw-link -l
somewhere (pw-link -l | wireplumber --make_it_so).
Need to always connect jack-play this way:
$ pw-link -l
It gets harder to learn new things as we gets old.
Mididings may be the only JACK-api MIDI router/filter tool around; if
there is another I'd love to know about it. On the other hand t was
working just dandy until, I think, some changes to both Python3 and
legacy support for Python2. I was using its Python3 AUR adaptation
(mididings-git) under Manjaro, but then after package upgrades, it began
to fail at 'from mididings import *' (see below). I found similar
failures in Ubuntu 20, and found different failures in both when I tried
setting up to use Python2 (which obviously we would rather not be
doing). The failure is similar to a number of failures reported
starting with Python 3.10, so this may be related, but I was not able to
figure out how to apply those workarounds to the mididings source, I
tried several different variations, including a number of the different
forks in github.
Thoughts, anyone? I found Pigiron and Jamrouter and puredata, but none
of these appear to do JACK. I'm using pipewire now, so I could
theoretically revise the whole rig around ALSA MIDI, but all of the apps
needing MIDI use JACK, and mididings is so elegant...
|[jeb@newbnr ~]$ python Python 3.10.1 (main, Dec 18 2021, 23:53:45) [GCC
11.1.0] on linux Type "help", "copyright", "credits" or "license" for
more information. >>> from mididings import * Traceback (most recent
call last): File "<stdin>", line 1, in <module> File
linux-x86_64.egg/mididings/__init__.py", line 15, in <module> from
mididings.engine import run, process_file File
line 15, in <module> import mididings.patch as _patch File
linux-x86_64.egg/mididings/patch.py", line 15, in <module> import
mididings.units as _units File
line 14, in <module> from mididings.units.engine import * File
line 55, in <module> def SceneSwitch(number=_constants.EVENT_PROGRAM):
line 46, in composed return arguments.accept(*constraints, **kwargs)
line 49, in __init__ self.constraints = [_make_constraint(c) for c in
line 49, in <listcomp> self.constraints = [_make_constraint(c) for c in
line 160, in _make_constraint elif isinstance(c, collections.Callable):
AttributeError: module 'collections' has no attribute 'Callable' >>>|
Some old stuff on the JACK2 project:
https://hal.archives-ouvertes.fr/hal-02158993 and http://lac.zkm.de/2005/proceedings.shtmlhttps://hal.archives-ouvertes.fr/hal-02158922
(more generally https://hal.archives-ouvertes.fr/search/index/?q=JACK+grame&submit=)
> Le 25 janv. 2022 à 12:00, linux-audio-dev-request(a)lists.linuxaudio.org a écrit :
> Message: 3
> Date: Tue, 25 Jan 2022 19:09:53 +1100
> From: Philip Rhoades <phil(a)pricom.com.au>
> To: Linux Audio Developers <linux-audio-dev(a)lists.linuxaudio.org>
> Subject: [LAD] A History of Audio on Linux somewhere?
> Message-ID: <56fa25296efbdfd75a37c512551f2974(a)pricom.com.au>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
> I am just a regular user of Linux audio but I am interested in the
> history of how software was developed and what problems they were meant
> to solve on Linux eg OSS, ALSA, Jack etc and more recently PipeWire.
> Is there such a documented history already in existence on the web
> somewhere? (ie NOT a HOWTO) - that would be intelligible to non-audio
> I am interested in learning and understanding more about audio and
> perhaps making better use of my system (Fedora 34 + Wayland soon to be
> updated to 35).
> Philip Rhoades
> PO Box 896
> Cowra NSW 2794
> E-mail: phil(a)pricom.com.au
I'd like to test pipewire as a replacement for Jack (on Arch),
and have been reading most (I think) of the available docs.
What is clear is that I will need to install the pipewire
and pipewire-jack packages.
And then ?
How do I tell pipewire to use e.g. hw:3,0 and make all of
its 64 channels appear as capture/playback ports in qjackctl ?
Note: I do not have anything PulseAudio (like pavucontrol)
installed and don't want to either. If that would be a
requirement then I'll just forget about using pipewire.
This is just a friendly reminder that the various calls for the 2022 Sound and Music Conference (SMC-22) that will take place in Saint-Étienne (France) on June 4-12, 2022 are still open: https://smc22.grame.fr/calls.html
We welcome scientific, industry-oriented, and artistic submissions until February 8th (submission must be registered on the submission portal by February 1st, though). These are strict deadlines!
We remain at your disposal if you have any questions.
We look forward to seeing you in Saint-Étienne this Spring!
Romain Michon, Laurent Pottier, Yann Orlarey, Constantin Basica, Jérôme Villeneuve (SMC-22 Chairs)