Re: [Discuss-gnuradio] Advice for installing on OSX?

[Eric Blossom]

On Fri, Nov 18, 2005 at 10:20:46PM -0500, Michael Dickens wrote:
> On Mon, 12 Sep 2005 20:18:35 -0700, Eric Blossom wrote:
> >All of these are solvable, and it would be great to have some OS/X
> >hackers help out on this.  I have a good idea of the general strategy
> >to make the fast USB stuff work, but we need someone who knows the
> >user-mode side of IOKit, or wants to learn it.
> 
> Eric - I'll be working on IOKit soon to get MacOS X USB speeds up, as  
> well as liboss and/or CoreAudio to get audio going; care to share the  
> general strategy so that I can keep that in mind (privately, or to  
> the list as you see fit)? - MLD

This is great.  Let's keep the discussion on the list, since there are
other OS/X folks who are interested too.

liboss is probably a good start, but you may want to consider
writing a gr-audio-darwin block that uses the native interface.
It looks pretty simple to me, and keeps a layer of cruft out of the way.

Some time after I get 2.6 out the door, I'll be revisiting the
hierarchical block strategy (unless someone beats me to it).

We've now got great rational resampler code, and it shouldn't be hard
to run the native audio interfaces (e.g., JACK, CoreAudio, ALSA,
PortAudio) in their fastest/highest-resolution configuration and just
handle the resampling in our code.  This should eliminate a bunch of
the "hey, my card won't do that sample rate" problems.

Eric