[oss-devel] softmodems

Clemens Ladisch clemens at ladisch.de
Wed Jun 18 16:06:16 EEST 2008


François Revol wrote:
> > François Revol wrote:
> > > I have also been wondering about MC97 modem support, it should be
> > > possible to publish tty devices from them I suppose. [...]
> > > Even ALSA is supposed (I never tried) to support my ATI IXP modem but I
> > > never dig the code.
> >
> > MC97 devices work like AC97 devices and are exposed as a plain 8 Khz PCM
> > sound devices.  The actual modulator/demodulator stuff is done in a
> > userspace application, such as linmodem (which uses the OSS API).
>
> Hmm I was under the impression OSS was actually filtering those out
> before publishing ?

As far as I can see, OSS doesn't even look for modem codecs.  What I
described above was working implementations (such as ones using ALSA
drivers).

What I meant to imply was that adding support for MC97 PCM devices to
OSS should not be difficult.


Regards,
Clemens


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