Re: microphone and sound access in Ada

[Adrian Knoth <adi@drcomp.erfurt.thur.de>]

Egil Harald H�vik <egil.harald.hoevik.nospam@kongsberg.com> wrote:

>> [Binding to Ogg/Vorbis]
>> > I have already done some work on this. I have bindings to libogg,
>> > libvorbis and libvorbisfile, although I lack some testing.
>> If you like I can do some of it for you/public.
> I guess that wouldn't be a bad idea  :-)

If storage is a problem, I can provide the necessary server(s).

[License] 
> When it comes to licenses, I don't have a preference, but as I understand
> it would have to be compatible with the original libraries, right?

I only asked because it sounded a little bit like "no GPL/BSD".

The best thing ever would be to bring the your work into a proper state
(in case it's not already there) and then check-in to xiph.org's CVS
so the Ada-bindings are part of the main distribution, like ncurses
comes along with the Ada-interface. A lot of developers might have a
look at this API.

Concerning the input-stuff I'd suggest not to stick to ALSA directly
but use jackit instead. It's a low-latency-framework on top of ALSA
which is able to share ressources between applications and guarantee
a low overhead in processing which is necessary for realtime-sound-IO.

It's like the ASIO-drivers for Synthesizers/Samplers/Recording-software
under Windows.

I didn't do deep investigations on jackit, I only felt attracted by a
brief overview located on their website. If it provides a mixer-API
for changing volumes than it would suffice. I won't suggest using jackit
if we'll also need to interface to ALSA directly only for volume-change :)

On the other hand: if there is a libao(ut), perhaps there is also a
libai(n)?

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