[PD-dev] midiout

Enrique Vetere evetere at gmail.com
Wed Oct 27 14:55:04 CEST 2010


I agree it's a bug.
So far I've done a simple c program that outputs the sysex correctly, so I
would be able to patch.
The thing is that if we keep midiout object we need to change it's interface
(because it would have to accept a list instead of a float). So maybe better
to create a new object sysexout?

PS: On the other hand I need some help building/configuring, I open another
thread...

On 27 October 2010 09:36, Martin Peach <martin.peach at sympatico.ca> wrote:

> 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
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-dev/attachments/20101027/429fdcfd/attachment.htm>


More information about the Pd-dev mailing list