Sound Hardware preferences should auto-select next free channel

[mixxxbot]

Reported by: Holzhaus
Date: 2020-10-13T22:39:15Z
Status: Confirmed
Importance: Low
Launchpad Issue: lp1899703
Tags: easy, preferences, usability

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When configuring sound hardware in the preferences, Mixxx currently always assigns the first channel of a soundcard to every input or output instead of using the next free available channel.

For example, if you want to configure the main and headphones output, the workflow is the following

1. Select soundcard A in the main output's soundcard combobox. The channel combobox automatically picks channels 1-2.
2. Select soundcard A in the headphone output's soundcard combobox. The channel combobox automatically picks channels 1-2. (the configuration is now invalid because both outputs use the same channels)
3. Select channels 3-4 in the headphone output's channel combobox.

Mixxx should automatically pick channels 3-4 in step 2, because channels 1-2 are already in use. That would make step 3 unnecessary.

[Rohan-Dah]

Heyy... Is this issue still open? I'll be happy to work on it...

[daschuer]

Yes. just try it out. If you are on it a review about the whole first time user experience would be also nice. Maybe you find related issues that you can file in an here like this. Thank you.