On Wed, 24 Mar 2004, Paul Davis wrote:
> >open pcm, and get a handle.
> >
> >snd_pcm_poll_descriptors(handle, &pfd, err);
> >
> >Get a poll file scriptor in pfd.
> >
> >select(nfds, rfds, wfds, efds, tvp);
> >
> >Is it possible to use this call with alsa ?
>
> select is generally deprecated in linux (linus says so!). but you can
> use the same pfds in select as in poll (select is implemented in the
> kernel using the poll code). the problem is interpreting the results
> you get back (as noted recently for the dmix plugin).
Nope, the application must give results back to pfd array and call
snd_pcm_poll_descriptors_revents() function. In this way, everything
will work as expected.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
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