Re: midish and alsasequencer

From: Alexandre Ratchov <>
Date: Fri Jul 06 2007 - 13:34:54 CEST
On Thu, Jul 05, 2007 at 09:48:11PM +0200, Julien Claassen wrote:
> Hi Alexandre!
>   I want to make midish aware of alsaseq-clients. What I'd like to have midish 
> to be able to write and read from hardware midi and still be able to connect 
> to alsaseq clinets both incoming and outgoing. From what you've written am I 
> correct in supposing the following:
> Attach one hardware device as "rw" and attach the virmidi-card twice, once as 
> "wo" and once as "ro"? 
> And then use filter rules to map events between them 
> like:
> map 0 (hardware) to 1 and 1 to 0.
> map 0 to 2 and 2 to 0?
>   Or am I still getting it a bit wrong?

You're correct, except that you should attach only once 
the virmidi in read-write "rw" mode, as device 1, and then 
map 0 to 1 and 1 to 0 as you do.

BTW, it may be handy to turn on filter debug mode (with
'debug filt 1') so that all midi events are displayed on the 

since i'm not a big alsa user, i'm interested on your feedback and
your tips


-- Alexandre
Received on Fri, 6 Jul 2007 13:34:54 +0200

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