[LAU] Zita-ajbridge ?
Marc Lavallée
marc at hacklava.net
Sat Jul 20 14:08:03 UTC 2013
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 at 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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