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a2jmidid - JACK MIDI daemon for ALSA MIDI


a2jmidid [-j jack-server] [e | --export-hw]


a2jmidid is a daemon that implements automatic bridging. For every ALSA sequencer port you
get one jack midi port. If ALSA sequencer port is both input and output one, you get two
JACK MIDI ports, one input and output.


-e | --export-hw
forces a2jmidid to bridge hardware ports as well as software ports

-u forces a2jmidid to generate non-unique port names (see NOTES)

-j specifies which jack-server to use


ALSA does not guarantee client names to by unique. I.e. it is possible to have two apps
that create two clients with same ALSA client name. JACK however requires port names to
be unqiue. To ensure this uniqueness, a2jmidid will add the unique numeric ALSA client ID
to the JACK port name. However this behaviour is known to be problematic when restoring
connections using simplistic tools like aj-snapshot and jack_connect. In order to make
them work, the -u option can be used. This option will cause a2jmidid to omit the numeric
ALSA Client ID from JACK port names. In this mode, ALSA client name uniqueness must be
guartanteed externally.

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