[LAU] Recording from S/PDIF

[David Kastrup]

Paul Davis <paul-dDzkXPnfpdxaomM2pvQuqZqQE7yCjDx5 at public.gmane.org>
writes:

> On Wed, Nov 22, 2017 at 1:02 PM, Clemens Ladisch
> <clemens-P6GI/4k7KOmELgA04lAiVw at public.gmane.org> wrote:
>
>> David Kastrup wrote:
>> > Clemens Ladisch
>> > <clemens-P6GI/4k7KOmELgA04lAiVw-XMD5yJDbdMReXY1tMh2IBg at public.gmane.org>
>> > writes:
>> >> David Kastrup wrote:
>> >>> Does this information get back out of the ALSA driver (I can use
>> >>> an RME Multiface here) in some manner?
>> >>
>> >> As far as I can see, this driver does not give you access to the
>> >> channel status bits of the capture stream.  (And even C-Media cards
>> >> give you only the first 32 bits.)
>> >
>> > Huh.  Is that an ALSA shortcoming?
>>
>> No, of the hardware.
>>
>
> ​Not always. When I wrote the RME driver for the
> digiface/multiface/digi9652 etc, I knew that status bits were available,
> but I don't recall exporting them to user space. At this point in time, I
> don't even remember what the ALSA abstraction for that would be. The
> "control" device? The mixer?​

What could the Jack abstraction be?  Synthetic Midi signals could likely
fit pretty well but probably cannot be delivered sample-accurate.

-- 
David Kastrup