ipad version only sees inputs 1/2 on a 4 port interface

[rdica]

Hi, I'm not sure this is specific to Jamulus on iPad...

iPad Pro 11" MTXP2LL/A iPadOS 26.5
Behringer UMC404HD USB interface
Jamulus 3.12.1 for iPad

Mic in port 1, instrument in 2, I can hear both in Jamulus. I plug an external src stereo output into 3/4 and nothing. The interface is receiving as I can see the input level LEDs light up, and I can hear it if I turn the mix knob to direct monitoring.
Garage Band receives input from 3/4 and is audible when monitoring is enabled so it appears the interface is in working order.
Jamulus seems to provide a limited inputs option.

iPad sound setting:

Jamulus audio setting:

There are only those two options.

In the past I'd thought I'd seen a screenshot of Jamulus audio inputs on a Mac that showed more input options for interfaces with more than two hardware inputs, so I'm wondering whats different between Mac version of Jamulus and iPadOS version?

Thanks!

[ann0see]

Likely there's just no code implementing selecting multi inputs in https://github.com/jamulussoftware/jamulus/blob/main/src/sound/coreaudio-ios/sound.mm

[pljones]

Can you make sure the sample rates on the interfaces you want to use are all set correctly (48KHz) and that they appear as a single device (rather than separate input pair devices). I don't know enough about macOS but I'm given to believe its core audio is capable of changing device aggregation.

Is there nothing else under "Audio Device"?

(If you pick an "Audio Device" and it has a single pair of ins/outs, Jamulus presents it without the options to pick which ins/outs to use. It always takes two, so there isn't anything to choose.)

[rdica]

On the iPad I don't see anywhere to configure or adjust the interface, there's just what I found as shown in the screenshots.

I looked again but in the Audio Devices menu there's just the two options shown in the screenshot.

Given what @ann0see mentioned, jamulus working with ports 1/2 (48k seems fine), and that Garage Band can see and select all the inputs on my interface, I suppose its not a bug then but perhaps an issue to be raised?

[rdica]

@ann0see @pljones Can you move this to an issue?