Re: [Jack-Devel] About ALSA drivers for Firewire sound devices

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DateThu, 06 Feb 2014 00:10:09 +0900
From Takashi Sakamoto <[hidden] at sakamocchi dot jp>
ToPaul Davis <[hidden] at linuxaudiosystems dot com>
CcJACK <[hidden] at lists dot jackaudio dot org>
In-Reply-ToPaul Davis Re: [Jack-Devel] About ALSA drivers for Firewire sound devices 
Hi Paul,

>     Here I have to mention about MIDI functionality. When users use ALSA
>     MIDI functionality, the new drivers also start streaming because
>     firewire streaming includes both of PCM samples/MIDI messages.
>
>     Some graphical JACK application such as 'patchage' displays ALSA MIDI
>     ports when jackd is running. But users can't do this. Vise versa, when
>     users use any ALSA MIDI ports, then jackd always failed.
>
>
> Can you clarify this a bit?

Actual devices which my ALSA drivers support can handle one pair of 
in/out streams. Then PCM samples/MIDI messages are transferred on the 
same stream.

With my ALSA drivers, MIDI applications can start streaming to open MIDI 
character devices as PCM applications can start streaming to open PCM 
character devices.

So users can't simultaneously use ALSA MIDI ports and jackd with 
firewire backend.


Regards

Takashi Sakamoto
[hidden]
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