Hi Takashi,

On Thu, 6 Dec 2001, Takashi Iwai wrote:

> > I would like to get 24 bit output working with
> > a C-Media PCI CMI8738 (model 37) and alsa-driver-0.9beta10.
> >
> > Are there any userland-tools to send a 24 bit pcm file to the
card?
>
> It should be possible, but not supported on ALSA driver yet.
OK.


So, more generaly speaking, how do I send a 24 bit PCM file to 'any'
24
bit sound card. Any tools, demos, examples, etc?

How do I get the capabilies of a sound card. (I checked /proc/asound/
but
haven't found anything thats says "I can play 16bit, 8bit,
ulaw,....")

> There is a register bit which seems to toggle this, but as far as
I've
> tested it didn't work, thus disabled so far.
> Please check card-cmipci.c.

Ahh, I see, you mean CM_SPD24SEL, I guess.
So, how do I enable it? There are no comments in the source that 24
bit
output is disabled.
In snd_cmipci_playback_spdif_prepare() it looks like that CM_SPD24SEL
is allready used!?

I've a simple S/P DIF test-setup available and some spare time
left...

Karl


__________________________________________________________________
Nokia 5510. Verrücktes Design! Toller Sound! 
Entdecke und gewinne es auf http://de.promotions.yahoo.com/nokia/ 
Gewinnspiel endet am 16. Dezember 2001.

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