Re: Adding native audio support to ports

[adr <adr%sdf.org@localhost>]

On Sun, 28 Jan 2024, adr wrote:
> I think that this problem could be related with the size of the
> audio buffer.  Following audio(4), setting hiwat (and lowat
> accordingly) could do the trick, but testing with audioctl it seems
> that they are read only, like buffer_size:
>
> ~  $ audioctl -a
> name=USB audio
> version=
> config=usb:00000007
> encodings=mulaw:8*,alaw:8*,slinear:8*,ulinear:8*,slinear_le:16*,ulinear_le:16*,slinear_be:16*,ulinear_be:16*,slinear_le:24*,ulinear_le:24*,slinear_be:24*,ulinear_be:24*,slinear_le:32*,ulinear_le:32*,slinear_be:32*,ulinear_be:32*
> properties=full_duplex,mmap,independent
> full_duplex=1
> fullduplex=1
> blocksize=2048
> hiwat=32
> lowat=24
> [...]
>
> ~  $ audioctl -w hiwat=15
> hiwat: -> 32
>
> Am I missing something?

I see the difference using /dev/sound|/dev/audio. I'll take a look
at audioctl(1) source, it's a little confusing.