[pvrusb2] New fwextract.pl - for HVR-1950

[Mike Isely]

I've updated fwextract.pl to recognize firmware found in this driver 
package:

  http://hauppauge.lightpath.net/software/install_cd/cd_4.5a.zip

The new fwextract.pl can be directly retrieved from here:

  http://www.isely.net/downloads/fwextract.pl

Of course the next driver snapshot will also include the updated 
extractor.

You will need this updated extractor if you have the new HVR-1950 device 
and want to use it in Linux.  Though the pvrusb2 driver coming up in 
2.6.26 should handle the device, you still need to extract the firmware 
files from Hauppauge's driver package.  The procedure is simple; it is 
the same as it has always been (and documented on the pvrusb2 web page), 
however you'll get a different name for the FX2 firmware.  The new 
device uses different FX2 firmware so the file has a new name.  It will 
be obvious.

I know I said I would get this done last Sunday.  I don't run Windows XP 
here; up until now I've flat-out managed to avoid that DRM-infected 
thing.  However Hauppauge's HVR-1950 driver won't work in Windows 2000 
so I had to at least temporarily configure an XP box here before I could 
run the manual extraction process.  Oh joy.  Complicating matters 
further, the decode_log program failed to identify the cx25840 firmware 
in the snoop output so I had to use a more creative means to get a 
training sample of that firmware.  (Then I discovered later that this 
particular firmware is already in the driver snapshot as its own 
trivially extracted file, after discovering and fixing a bug in 
fwextract.pl's training logic which prevented that trivial case from 
being recognized.)  So it took me until tonight to get all this cleaned 
up.

I don't have an official Hauppauge driver CD here, but it's probably a 
safe bet that what I grabbed from their site should match.  So in 
theory, fwextract.pl should also work when used on the CD packaged with 
the device (it's worked this way in the past).  If someone could post a 
confirmation of that here, it would be very helpful for others.

Anyway, enjoy.

  -Mike

p.s.

Now maybe I should get the pvrusb2 documentation updated for the 
HVR-1950.  There's a bunch of new stuff that needs to be described.


-- 

Mike Isely
isely @ pobox (dot) com
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