[pwc] speed/support for Philips spc900 ?

[bugbear <>]

Short version:

I'm only getting 5 FPS from my webcam on a 1.5 Ghz CPU running Linux - is this 
the expected performance, or am I doing something wrong?

Details:


> > it's a Philips spc880nc, claimed to be identical to the SPC900NC.
OK. I have now taken delivery, and followed the info (mainly via star gazer's 
lounge) to make it into a SPC900NC.

My Linux box (Ubuntu) can see the camera, and wxAstroCapture is running.

I think I have a data-rate problem "somewhere", since when I run at 640x480 I 
can only get a preview image at 5 FPS. If I set the rate any higher, I get no preview.

Herewith some "obvious" information about my machine to save people asking:

FujitsuSiemens AmiloPro V2000

advertising specs:

http://server/fujitsu/ds_amilo_pro_v_series_e.pdf

Linux bugbear-fs 2.6.35-24-generic #42-Ubuntu SMP Thu Dec 2 01:41:57 UTC 2010 
i686 GNU/Linux

CPU:
model name : Intel(R) Celeron(R) M processor 1500MHz
cpu MHz : 1499.795
cache size : 512 KB
bogomips : 2999.59

Memory:
MemTotal: 757724 kB


I have posted questions on cloudy nights (an astro forum)

http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/4320256/page/2/view/collapsed/sb/5/o/all/fpart/1

and the Ubuntu support forum

http://ubuntuforums.org/showthread.php?t=1669825

   BugBear
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