miltiple midi input ports
Tom Schouten
tom at zzz.kotnet.org
Thu Jan 11 09:00:57 CET 2001
On Thu, 11 Jan 2001, Tom Schouten wrote:
>
> hi,
>
> i have the following problem:
> when i use multiple midi-in ports, the midiin object only receives
> messages from the first port. output works fine to the other ports
> though..
>
> i found this line in s_linux_midi_io.c in function
> int midi_instat(MIDIPort *mp)
>
> FD_SET(mproot->devhandle,&midi_rfds);
>
> which i thought was the problem, since mproot is the first port and the
> function doesnt use the *mp argument supplied, so i changed it to
>
> FD_SET(mp->devhandle,&midi_rfds);
>
of course, the next line has to be corrected too, so
FD_SET(mproot->devhandle,&midi_rfds);
return select(mproot->devhandle+1,&midi_rfds,NULL,NULL,&null_tv);
becomes
FD_SET(mp->devhandle,&midi_rfds);
return select(mp->devhandle+1,&midi_rfds,NULL,NULL,&null_tv);
and then it works fine!
tom
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