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Date:      Wed, 2 Mar 2022 09:05:58 +0100
From:      Hans Petter Selasky <hps@selasky.org>
To:        Shane Ambler <FreeBSD@ShaneWare.Biz>, freebsd-multimedia@freebsd.org
Subject:   Re: New FreeBSD port ALSA to JACK MIDI, a2jmidid
Message-ID:  <e3c97438-e744-83c6-45a2-377353b4ff0d@selasky.org>
In-Reply-To: <c60d14c9-a453-ecf7-3cae-6b74664a7bad@ShaneWare.Biz>
References:  <a1f43e5a-5d1f-1980-e771-00a0064f74bb@selasky.org> <c60d14c9-a453-ecf7-3cae-6b74664a7bad@ShaneWare.Biz>

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On 3/2/22 00:24, Shane Ambler wrote:
> 
> On 12/2/22 2:15 am, Hans Petter Selasky wrote:
>> Hi,
>>
>> My plan for MIDI support in FreeBSD is to use ALSA MIDI in user-space
>> via CUSE. It has some pros and cons, but mostly pros. The a2jmidid fills
>> the last hole, that JACK applications will automagically see USB MIDI
>> devices.
>>
>> https://www.freshports.org/audio/a2jmidid
>>
>> Can be used together with latest version of:
>>
>> https://www.freshports.org/audio/alsa-seq-server
> 

Hi Shane,

> So I gather alsa now supports USB midi. Is there some advantage to
> passing alsa midi to jack? or is this just to allow both to access the
> same device.

It is just for compatibility.

> My experience is that jack has supported usb midi for some time, I
> pathed lmms about six years ago to add support for jack midi so that I
> could use a usb midi keyboard as that was the only thing I could get
> working.

Some applications use JACK, some use ALSA. I would say that ALSA is 
better delay-wise, but for most applications it doesn't matter that much.

--HPS




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