Re: [LAU] Zita-ajbridge ?

From: Marc Lavallée <marc@email-addr-hidden>
Date: Sat Jul 20 2013 - 17:08:03 EEST

Update:

I have no idea why MPlayer now work as expected (with floatle outputs)
when starting Jack with my 16 bit USB module:
jackd -r -d alsa -d hw:2 -P -o 8 -z shaped

Although it would have been nice to use zita-j2a for resampling...
What was the problem then? I hope it's not intermittent,
and that it's not only related to the device between my ears. :)

Then I tried to add the 2 channels internal sound device:
zita-j2a -v -d hw:1
(no sound)
zita-j2a -v -d hw:1 -L
(no sound)

Salut

--
Marc
I wrote:
> Bonjour Fons.
> 
> Fons Adriaensen <fons@linuxaudio.org> a écrit :
> > First of all, what are you trying to achieve ?
> 
> I don't want to use "depth down-sampled" channels with ambdec.
> 
> > Zita-j2a is normally used to add a playback alsa device to Jack.
> > For example, if you use Jack with the internal soundcard, then
> > starting zita-j2a with the USB card will add the outputs of the
> > USB card to jack, you can then play via both cards at the same time.
> 
> As I wrote, zita-j2a stays silent when using it as you explained.
> 
> > As said, Jack is *always* using floating point. 
> 
> Excellent!
> 
> But when running jackd with my 16bit USB module, Mplayer is converting
> its output to 16bit. When running Jack with a 24bit sound card or the
> aloop device, Mplayer's output is floatle (as expected), even when
> forcing Jack to run in 16bit with the "--short" option.
> 
> Another problem: when starting Jack with a 2 channels sound card,
> Mplayer can't output more than 2 channels. 
> 
> So I suppose that Mplayer is misbehaving.
> 
> > It will convert the playback channels to whatever the sound card can
> > handle.
> 
> So far, no sound is coming out of zita-j2a.
> Here's how I started it:
> zita-j2a -v -d hw:2 -c 8
> playback :
>   nchan  : 8
>   fsamp  : 48000
>   fsize  : 256
>   nfrag  : 2
>   format : S16_LE
> capture  : not enabled
> Starting synchronisation.
> 
> Tchao
> --
> Marc
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Received on Sun Jul 21 04:15:03 2013

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