midiin1_in_pipewire example does not work

[pri-yan-shu]

midiin.open_port always fails at link_ports. On logging, midi has size 0, while I do have midi ports.

[pri-yan-shu]

here is my pw-dump for reference

[jcelerier]

can repro, on it!

[jcelerier]

heya, I went through a pretty much complete rewrite of the pipewire backend (also so that it can share more easily with other pipewire features for pw users), can you try again with the current git main HEAD ?

[pri-yan-shu]

The example is working fine now. I'll test more extensively later, thanks.

[pri-yan-shu]

I was testing with running one midi1_out_pipewire instance, and one midi1_in_pipewire instance, but doing this with midi2 alternatives does not work. midi2_out_pipewire creates a node, but midi2_in_pipewire returns instantly, and does not report any UMP ports. Is this normal?

[jcelerier]

does not report any UMP ports. Is this normal?

hmm.. do you have any UMP device connected to pipewire, and are you on a recent pipewire (e.g. on a distro such as Arch - it's a fairly recent feature not available in e.g. ubuntu 24 pipewire)

[pri-yan-shu]

I'm on pipewire 1.6.4, I thought midi2_out_pipewire would work as a UMP device, like in the case of midi1_out_pipewire.

[pri-yan-shu]

Hi, last time I was somewhat incorrect in my assumptions. I checked properly and both examples work fine. The issue is libremidi checks for UMP ports through the "format.dsp" property containing "UMP" or "ump", but its rolled back, and the property to look for seems to be "control.ump". This issue can be closed.

[jcelerier]

ah ! I'll update to use control.ump