30 Jan
2022
30 Jan
'22
2:34 p.m.
On Sat, 22 Jan 2022 13:57:45 -0800 (PST) Len Ovens wrote:
I am not sure why PW, in it's JACK compatibility
does not allow one of the
devices to be chosen as master and called system:* for compatibility with
all the JACK software out there... but it is what it is. I am sure someone
will come up with a configuring app(let) that does this better for
profesional audio use. To be honest, I am not really sure what optimal
would be.
And yet, it seems that 'system:*' does exist in some form and plays a
role.
I've been trying to do without QjackCtl Patchbay and I've deleted the
virtual-sink.conf I made, so Pipewire is back to defaults. I prefer to
not hear audio while testing, so I use a meterbridge.
$ pw-link -i
Midi-Bridge:Midi Through:(playback_0) Midi Through Port-0
Midi-Bridge:M-16DX:(playback_0) M-16DX MIDI 1
alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX0
alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX1
but:
$ meterbridge -t vu -n myvu alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX0
Registering as myvu
Can't find port 'alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX0'
whereas:
$ meterbridge -t vu -n myvu system:playback_1
Registering as myvu
(and it creates a link)
$ pw-link -l
alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX0
|<- myvu:monitor_1
myvu:monitor_1
|-> alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX0
I can then play a file with:
$ jack-play -u a48k.wav
jack-play: a48k.wav
make the link and watch (and hear) it play:
$ pw-link -P jack-play:out_1 myvu:meter_1
$ pw-link -l
alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX0
|<- myvu:monitor_1
myvu:monitor_1
|-> alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX0
myvu:meter_1
|<- jack-play:out_1
jack-play:out_1
|-> myvu:meter_1
Great! But then, I can't get it to work without the meterbridge
and I wonder if I need a 'bridge' as well as a Pipewire link.
This is what happens without the meterbridge:
$ jack-play -u a48k.wav
jack-play: a48k.wav
$ pw-link -P jack-play:out_1 alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX0
$ pw-link -l
alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX0
|<- jack-play:out_1
jack-play:out_1
|-> alsa_output.usb-EDIROL_M-16DX-00.pro-output-0:playback_AUX0
I think that's the same without going via the meterbridge, but no sound.
If I take meterbridge's insistence on linking to 'system:playback_1' as a
hint:
$ pw-link -P jack-play:out_1 system:playback_1
failed to link ports: No such file or directory
So; I can carry on using QjackCtl and its Patchbay, or work via a meterbridge,
or?
--
John. Needing help again.