MIDI Through Port Number in ALSA Sequencer
Hello,
ALSA Sequencer always creates MIDI Through Port with the id 14:0. However, I can't find where it is defined that this special port will have this particular id/number. I also don't see any definition in seq.h regarding this ( unlike the timer and announce special port, for example). Can you explain?
Thanks
Robert
On Sat, 24 Jul 2021 12:07:14 +0200, rv71@onet.eu wrote:
Hello,
ALSA Sequencer always creates MIDI Through Port with the id 14:0. However, I can't find where it is defined that this special port will have this particular id/number. I also don't see any definition in seq.h regarding this ( unlike the timer and announce special port, for example). Can you explain?
It's a fixed client number defined with SNDRV_SEQ_CLIENT_DUMMY in the kernel header include/uapi/sound/asequencer.h (which will be installed in /usr/include/sound/asequencer.h).
Oh, and now I noticed that the comment in sound/core/seq/seq_dummy.c is with an old number that is no longer correct. Will fix up :)
Takashi
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rv71＠onet.eu -
Takashi Iwai