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  Monday, 22 February 2021
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Hello everyone, I've been writing an app for the Korg Kronos for a while now, I'm very happy with the API.

See https://www.youtube.com/user/superpno74

One thing still resists me:

When I launch the app, all the devices present remain unusable for an external app, even if I do not use them in my web app ...

Can someone confirm this behavior for me?

Can we free devices for external use?

Thank you in advance for all responses ;)

Regards, :) :)

Patrice.
9 months ago
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#8010
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Sorry, I'm talking about the Web Midi API :) :)
9 months ago
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#8010
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Sorry, I'm talking about the Web Midi API :) :)
9 months ago
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#8012
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You can try to explicitly close the unused ports in your Web MIDI application.
9 months ago
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#8014
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I've only played around with Web MIDI a little bit, but I believe Chrome on Windows has a bug: When a tab uses Web MIDI, it will use all the MIDI input and output devices on your system, preventing other apps from using them, until you close the tab -- it doesn't matter if your code closes the port using Web MIDI.

In July 2020 I tried to search if other people had this problem and found the following bug report that seems to describe the issue: https://bugs.chromium.org/p/chromium/issues/detail?id=471793

I haven't done any research on this issue since then, but the up-to-date Chrome on my Windows 8.1 computer still appears to have this bug.
9 months ago
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#8017
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Thank you very much for your answers, I tried closing the ports explicitly with no results.

I will test under my Mac mini to see.

I find this bug (if it is one) very invalidating for the API.
Weird that they didn't correct that.

I will report here the results of my tests under Chrome / Mac.

Thank you again for your posts.

Patrice.
9 months ago
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#8018
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Well ...

It Works on Mac ...

This is a Windows problem ...

Under windows it does not work either under opera ... :(

We're gonna say it's a bug, eh?

Thank you for your attention .

Patrice;
9 months ago
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#8022
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Try Firefox with the MIDI extension: https://addons.mozilla.org/en-US/firefox/addon/jazz-midi
It also requires the plugin: https://jazz-soft.net/download/Jazz-Plugin
9 months ago
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#8029
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I tried firefox ...

Obviously he doesn't like my code that's not perfect enough for him at all.. :( :(
9 months ago
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#8043
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If your code uses Web MIDI API, you can either include JZZ.js before your script: https://github.com/jazz-soft/JZZ
or install another plugin: https://addons.mozilla.org/en-US/firefox/addon/web-midi-api
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