Re: Experimental USB audio support

[Takashi Iwai <tiwai@suse.de>]

At Fri, 31 May 2002 18:31:58 +0900,
Patrick Shirkey wrote:
> 
> Takashi Iwai wrote:
> > 
> > > devfs: devfs_register(): device already registered: "unknown"
> > > ALSA usbaudio.c:1191: 3:4:1 : frame size 3 doesn't match ALSA 24bit
> > > sample format
> > 
> > oh, that's interesting.  apparently the device uses 3 bytes for 24bit
> > sample format.  alsa supports only 4bytes-packed format, so far.
> > that's not expected.
> > 
> 
> Damn. I assume it is not simple to incorporate.

yep..  and obviously no linux applications support such a format yet
even if we add 24bit/3bytes support.


> > > devfs: devfs_register(): device already registered: "unknown"
> > 
> > this is a bug of sound_core.c.  you can fix it by replacing
> > sound_core.c with the one in alsa-kernel tree.
> > 
> 
> General question. Is the above likely to cause problems if I don't swap
> them?

no, it works fine on 2.4 kernel, too.  i'm using it.


Takashi

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