[alsa-devel] [RFC][PATCH 26/37] ALSA: firewire-tascam: add MMAP support to show status and control message

Clemens Ladisch clemens at ladisch.de
Tue Jul 21 16:06:52 CEST 2015


Takashi Sakamoto wrote:
> Typically, such messages should be converted to MIDI control change
> messages for userspace applications.

It would be possible to have ALSA mixer controls for these, but this
would make sense only if these controls are suitable to be displayed in
a generic mixer application.  I guess this isn't the case for most of
them.

> Thus, this driver should have a converter with appropriate MIDI map.
> Currently I have no good idea for the map and it is not implemented
> yet.

I guess the Windows driver does not makes this information available in
any way?

If all the data is device-specific, the actual mapping chosen does not
really matter, because the mixer/control application needs to have
special code for parsing the data from this particular Linux driver
anyway.


Regards,
Clemens


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