Re: General Guidelines? (MIDI)

[Brian Victor <bhv1@psu.edu>]

On Thu, Jan 16, 2003 at 04:32:05PM +0100, Tim Goetze wrote:
>afaik, you should use snd_seq_event_output() instead of
>snd_seq_event_output_direct() -- the latter is supposed
>to by-pass the queue for instant transmission.

I've tried both, actually.  output() does not show any queued events in
/proc/asound/seq/queues; output_direct() does.  miniArp.c uses
output_direct, and seems to work.  Neither produces any output in my
test program.

I've removed all attachments to wxWindows, so anyone should be able to
compile my test program.  So I don't have to keep sending snippits out
of context, the code is here:

http://www.personal.psu.edu/users/b/h/bhv1/nowx.cc      or
http://www.personal.psu.edu/users/b/h/bhv1/nowx.cc.html (syntax colored)
(g++ nowx.cc -o nowx -lasound)

>you may want to look at alsa-lib/test/playmidi1.c for
>another reference.

That could be useful, but at a glance I don't see anything important in
there that I'm not doing.  This is really perplexing me.

>>(Which begs another question: what does PPQ stand for?  Something per
>>quarter?)
>ticks/quarter (aka 'parts per quarter').

I figured it was something like that.  Thanks.

-- 
Brian


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