[linux-audio-user] sndpeek: real-time 3D FFT + audio visualizatoin

Ge Wang gewang at CS.Princeton.EDU
Wed Oct 27 18:19:09 EDT 2004


Thanks to all who have downloaded and sndpeek'd -
and for the great suggestions, most of which we will
put into the next version.

regarding sndpeek crashing using JACK:

We are trying to track this down.  So far ALSA seems fine -
please let us know if sndpeek crashes with ALSA on your
system.  There seems to be some issues with opening audio
input using JACK with RtAudio on certain systems.  When
this fails, there should be an exception thrown, but we found
that this is disabled in the current build.  It is a possible source
of the crash.  Stack traces suggest sndpeek crashes deep in
the glutCreateWindow().  Perhaps updating the video driver
may fix this problem.  We hope to have a more robust fix soon!

Best,
Ge!

On Oct 26, 2004, at 10:51 PM, Kevin Ernste wrote:

> Thanks Dan.  No joy after setting LD_ASSUME_KERNEL, same behavior.
> Hopefully some of the bugs will get ironed out (here or with sndpeek),
> it looks promising indeed.
>
> Kevin
>
> On Tue, 26 Oct 2004 23:00:56 +0100, Dan Mills
> <dmills at spamblock.demon.co.uk> wrote:
>> On Tuesday 26 October 2004 22:17, Fernando Pablo Lopez-Lezcano wrote:
>>> On Tue, 2004-10-26 at 13:48, Kevin Ernste wrote:
>>>> It runs here fine with ALSA (looks great, by the way, thanks for the
>>>> nice work!).  However, the JACK version locks up the terminal and 
>>>> the
>>>> process cannot be killed. in fact "ps" dies even trying to view the
>>>> PID, etc.  I would be happy to try and better diagnose it if others
>>>> have a similar problem.
>>
>> The jack version is OK here (recent CVS jack), radeon 9200 graphics, 
>> fun
>> program.
>>
>> Now if I just knew enough open GL to add calibration scales for the 
>> frequency
>> response graph life would be good!
>>
>> The ps dying thing is reminiscent of the problems qjackctl used to 
>> have with
>> the NPTL threading library on kernel 2.6, possibly try the 
>> LD_ASSUME_KERNEL
>> workaround?
>>
>> Regards, Dan.
>>



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