soundcheck;699209 Wrote: 
> 
> It would be great to have iPeng supporting above. It might not be that
> difficult.
> 
I might.
If I had a device for this, I would check what kind of hardware sample
rates you can get from iOS (you can query that) but everything I've
seen so far (it's not like that's really documented anywhere) tells me
that iOS only supports up to 48 kHz. I also only see 16 bit samples.
> 
> Perhaps there's just a little  parameter to change somewhere from an
> iPeng perspective.
> 

Definitely not.
It might be just a small parameter if you use the iOS audio player, but
then you lose gapless, flac, ogg, synchronization and generally you
can't use the Squeezebox' streaming protocol.
Especially getting the synchronization to work correctly in a
multithreading environment requires you to use the Audio Unit Graph and
if that involves using iOS' audio engine, that's what iPeng will always
do, we are not going to implement an additional audio path for
RemoteIO.

I know that you can set a sample rate to use with the AU Graph but I
don't know what you can set here and how easy a change it would be to
detect and support external hardware. Will have to talk to James about
it but given the fact that even now sync is difficult from a timing
perspective when run in the background I suspect he won't be too
enthusiastic.
And if I have to trade battery life against support for HD DACs
(because we would have to disable the power-saving background mode),
I'd go for the battery life.


BTW: The touch does provide bit-perfect output up to 24/96, don't know
what you meant with that comment.


-- 
pippin

---
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