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From: "Guenter Geiger" <guenter.geiger@psp-vie.be.philips.com>
To: "'Jaroslav Kysela'" <perex@jcu.cz>,
        "'Guenter Geiger'" <guenter.geiger@psp-vie.be.philips.com>
Cc: <alsa-devel@alsa.jcu.cz>
Subject: RE: hi-res pcm sound support
Date: Tue, 19 Jan 1999 11:56:24 -0800
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> -----Original Message-----
> From: Jaroslav Kysela [mailto:perex@jcu.cz]
>
> Note that any conversion si time consuming... I think that
> the best way is
> transfer data to hardware unchanged if possible.
>
> 24-bit and 32-bit samples should be probably ok? I really
> don't know which
> data are expected from DSPs or CODECs which supports 16+-bit
> resolution..
>

My experience is that most of the DSPs will transfer data in double word format
and cut
the least significant 8 bits. (e.g Turtle Beachs Multisound). So you dont have
to do conversion.

The second point is, that really nobody wants to use a 24 bit format on the
application side,
so providing 32 bit formats will be enough.

Guenter




