[PD-dev] midiout

Martin Peach martin.peach at sympatico.ca
Wed Oct 27 14:36:30 CEST 2010


On 2010-10-27 06:10, Enrique Vetere wrote:
> Hi.
> I've been trying to use midiout but it does not work when sending sysex
> because it sends 1 byte at a time.
> Chatting with matju on #irc where he showed me the source code, I think
> the problem is that midiout uses ultimately sys_alsa_putmidibyte to send
>
> snd_seq_ev_set_sysex(&ev,1,&data)
>
> one byte at a time
>
> So we thought about writing an external that uses alsa-midi functions
> and he guided me the first steps.
> Now, the problem is that this external would need access to structure
> midi_handle, and variables alsa_midioutfd and alsa_nmidiout which are
> defined in s_midi_alsa.c (because creating and opening ALSA ports is
> handled there). The functions provided by s_midi are not good enough as
> I need to
>
> snd_seq_ev_set_sysex(&ev, data_array_size,data_array)
>
> So my question is: is it possible to write such external? or I need to
> patch the sources?

IMHO this is a bug, so you should patch the source, then submit the 
patch to the tracker. Also it seems to bug differently on different OSs, 
only linux uses alsa. Pd's sysex implementation didn't work properly on 
WIN32 either last time I checked.

Martin



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