22 Nov
2017
22 Nov
'17
2:09 p.m.
Clemens Ladisch <clemens-P6GI/4k7KOmELgA04lAiVw(a)public.gmane.org>
writes:
Huh. Is that an ALSA shortcoming? It would seem like something worth
unifying over several drivers capable of S/PDIF. Oh, and what's the
deal with Dolby Surround via S/PDIF? That would also need some sort of
access different to PCM, wouldn't it?
--
David Kastrup
David Kastrup wrote:
I think it works even with track marks on continuous play. Not sure
about it, though. I need to check whether I have any CDs of that kind:
my digital-output CD player is too old to deal with any self-written
CDs. Assuming that its belts are still in working order.
I have a Minidisc deck with various digital in-
and outputs using
S/PDIF. If you connect another MD deck or a CD player digitally and
record from it, it will faithfully reproduce the titling (not sure about
alphanumeric titles, but at least the starting points of the tracks will
be accurate and reliable and not just based on pauses like when
recording via the analog inputs).
It's possible that these sourcees send invalid or different data during
the pauses between tracks. Now how do I
get this information when recording an S/PDIF signal
into the computer?
If that information is present, it must be in the channel status bits.
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.)