31 Mar
2019
31 Mar
'19
12:18 p.m.
On 31/03/19 17:50, Tim wrote:
Yes there is the envy24 mixer and Mudita24 (which I
helped with).
QasMixer does a good job of showing everything except the meters
that the other two mixers have.
I seem to recall that the meters are actually ALSA components.
Maybe they could be added to QasMixer.
I'm also using QasMixer, it seems to be one of only a few sane choices
with apart from the text-mode alsamixer...
When I (re-)wrote the Focusrite Scarlett mixer driver (which has to
expose a full 18x8 matrix; the original driver was done by Robin) to
extend it to more devices, I also thought about the available metering
information... but:
1) No mixer app seemed to actually support the alsa metering
controls/components, so I would not be able to test it.
2) Unlike the gain controls, the soundcard exposes the metering data in
blocks, so one block would contain the new data for (IIRC) *all* the
matrix inputs, and another block would contain it for all the master
outputs, and there was a third block - whereas the alsa controls expose
the data *per channel*... this means extra work in the driver to split
them (which also feels kind of wrong to me, from an api standpoint) ...
or go the route some other devices went (IIRC envy24 mixer), and provide
the data via the so called hw-dependent alsa api, which then
necessitates a hw-dependent mixer app (i.e. is able to handle that
specific hw-dep type).
Together with the rather spare documentation on the hw-dep stuff, that's
when I decided not to pursue that feature any further...
Tobias