31 Jan
2013
31 Jan
'13
1:08 p.m.
Nils Gey wrote:
But how to you specify the port? Is it hardcoded into the midi file or
has the player some saying in this?
The MIDI file specifies a port number, which ist just a number from 0
to N-1; it's the player's responsibility to map this to actual ports.
Because of this unpredictable mapping, the MMA has declared the port
number meta-event obsolete. Officially, one should now use the port
name meta event <FF 09 len text>, but the mapping of the MIDI file's
port names to the playback device's port names does not happen to be
any less unpredictable ...
Regards,
Clemens
There is a MIDI port sequence defined for SMFs. <FF
21 01 pp> which is
supposed to come at the start of a track. It specifies which port on
the computer the track is to be sent to. I've never tired using this
and don't even know if the alsa sequencer code supports it.
One ALSA sequencer port corresponds to a MIDI port. To support this,
the player application has to send the track to a different port.
(aplaymidi does this.)