linuxaudio.org

On Sat, 01 Aug 2009 12:52:44 +0200

Atte Andre Jensen  wrote:
> cal wrote:

quoted text
>

> > There's an experimental patch against the 2.4.0 release tarball at

> > .

>

> I played a bit with it, and it seems to work fine. I only selected

> patches and played them on the keyboard, though. Someone (Will

> Godfrey, perhaps) should stress test it with heavy load and see wht

> happens.

>

> A thing that struck me as odd: Why do I have to specify my jack

> buffersize, when zyn obviously knows what it should be:

>

> [atte@vestbjerg ~]$ zynaddsubfx

>

> Sample Rate = 		48000

> Sound Buffer Size = 	256 samples

> Internal latency = 	5.3 ms

> ADsynth Oscil.Size = 	1024 samples

>

> AudioOut, zynNframes 256, zynSamplerate 48000

> Error, zynNframes 256 != jack buffer size 128 => bad

> Error, failed to open audio out on 'default'

>

> So instead of me having to go "zynaddsubfx -b 128", the program

> should know that the only sane buffersize with the running jack

> server is 128 and then use that.

>

> I'm not sure if this behaviour is new, but I don't seem to remember

> this...

> 

I think there always was an external and an internal buffersize. But

yeah, it should be trivial to get jacks buffersize and use it.
Less trivial might be on-the-fly buffersize changes. Those are possible

since a long time but few applications support it currently, in

hydrogen for example it only works in very recent svn revisions.

This is not a deal breaker, sane and stable jack performance is far

more important.
Philipp

_______________________________________________

Linux-audio-user mailing list

Linux-audio-user@lists.linuxaudio.org

http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user