Re: Alsa plays only wav files
--- Michel Dänzer <daenzer@debian.org> wrote:
> On Die, 2002-09-17 at 17:33, Ondrej Certik wrote:
> > You are right, that the problem is endiannes,
> because
> > I wanted to know what is going on, so I switched
> back
> > to ALSA and
> > modified the Alsa output plugin for xmms, so
that
> it
> > swaps
> > the endiannes of the data, which goes through it
> and
> > ----
> > the ogg/mp3 now plays very well, but wav causes
> the
> > noise.
>
> Oh dear, like that it probably gets swapped at
least
> twice in
> software...
I know. I just wanted to know if endiannes really is
the problem.
>
> > So there is only one question: which code should
I
> > modify
> > to swap the endiannes? Probably the input plugin
> for
> > ogg/mp3?
> > Or both input plugin for wav and alsa output
> plugin?
> > Or even alsa driver? Everything should work.
> >
> > I don't exactly understand which fault it is. If
I
> > understand
> > it well, than Alsa expects input in native
> endiannes.
> > So
> > on ppc, the alsa-xmms plugin must send the
output
> in
> > big-endian.
> > So the change has to be in ogg plugin. But I
don't
> > know
> > which endiannes xmms expect its data. So maybe
> > changing ogg plugin
> > isn't the solution.
>
> Ideally, the input plugins would provide data in
> native endianness, and
> the other stages would simply pass it through. I
> don't know how many
> interfaces there are between input plugin and
output
> device, you'd have
> to make sure that it's labeled correctly at each
of
> them.
I know. But I thought that maybe you know where the
fault is. Because I don't like the idea to spend a
week
browsing xmms code just to know how many interfaces
there are.
If we know, that sometimes the endiannes is wrong,
why
just
not to ask it on Alsa and xmms lists? I think that
the
problem
can be easily solved. They must know better where
exactly in the
code the swap has to be done.
Should I ask on Alsa and/or xmms list?
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