Vorbis dev - Apr 2009 - Does libao use /dev/sound for audio ?

I am using the Versatile Application baseboard and intend to use the ogg
vorbis libraries .

I have been able to install all the modules related to sound . However I
think there's something wrong with the /sev/sound folder in my kernel ,
hence everytime we do

cat anything.au > /dev/audio

It throws an error cant create device /dev/audio even though /dev/audio is
present .

My question is the ogg vorbis libraries like the *libao* , do they make use
of /dev/audio or is there any other mechanism .

If it uses /dev/audio then I might not be able to use the ogg player now
until I fix the problem .

Regards
Diptopal Basu
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On Mon, Apr 13, 2009 at 9:09 PM, Diptopal Basu <diptopal.basu at
gmail.com> wrote:
>
>
> I am using the Versatile Application baseboard and intend to use the ogg
> vorbis libraries .
>
> I have been able to install all the modules related to sound . However I
> think there's something wrong with the /sev/sound folder in my kernel ,
> hence everytime we do
>
> cat anything.au > /dev/audio
>
> It throws an error cant create device /dev/audio even though /dev/audio is
> present .
>
> My question is the ogg vorbis libraries like the libao , do they make use
of
> /dev/audio or is there any other mechanism .
libao is not an ogg or vorbis library. It's a completely unrelated
library, for audio output - and it's unmaintained, so I don't know if
anyone will be able to help you with it.

Fortunately, since libao has nothing to do with ogg or vorbis, you can
happily use vorbis without using libao.

Mike

I am planning to port this on a an ARM platform running Linux .  Actually I
was hunting for the makefile in the libogg and libvorbis folders and I could
not find it  . I guess I need to make use of the autotools to first generate
the makefile from makefile.in , config.h.in etc before I can make the
necessary changes in the entries like

CROSS_COMPILE   and ARCH in the makefile , right ?

Regards
Diptopal

On Thu, Apr 16, 2009 at 1:48 PM, Conrad Parker <conrad at metadecks.org>
wrote:
> 2009/4/15 Diptopal Basu <diptopal.basu at gmail.com>:
> >
> >   I do not have a clue as to where to change the makefiles and config
> > files for the ligogg and the libvorbis files for building them with
ARM
> > compiler  . What are the factors that I need to take care if I try to
> cross
> > compile these libraries on ARM ?
> >
>
> ok, then you need to start there. Read up on GNU autotools support for
> that platform. It is probably just a matter of running:
>
> ./configure --host=...
>
> or
>
> ./configure --target=...
>
> and setting the prefix to your compiler in there.
>
> Conrad.
>
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