[sane-devel] Generate C source code from a USBSnoopy log

[Henning Meier-Geinitz]

Hi,

On Fri, Jan 24, 2003 at 01:30:02PM +0100, Thomas Soumarmon wrote:
> I have been playing around with my HP5470c scanner for some days without any 
> good results. I tried to handwrite C code corresponding to USBSnoopy logs I 
> got before as the logs are a bit long and tough, it never worked fully. So I 
> decided to replay the log with usb-robot. Logs did not fit with the expected 
> syntax... annoying.

I think usb-robot is for an older version of snoopy. Tha one wrote
directly to a file instead to that nice window.

> So I decided to write an awk program that would write for me the C sourcecode 
> that replays the log, and it works.
> Now I'll need to add the code to write the image to a file. Could anybody tell 
> me which format should I expect for the image (RGB pixels from top left ?). 

Well ,that's part of the things you should find out :-) In the hope
that the stream isn't compressed somehow you usually get lines of
data. Either RGBRGB... (or BGRBGR...) or RRRRRR....GGGGG....BBBBB.
That means, pixel-interleaved or line-interleaved.

That was for 8 bit. For 16 or 12 bit it may be more complicated.

> Is there a library I should use for image saving and processing (ImageMagick 
> ?). Thank you for your help.

I would just use pnm for testing. Write the header (normal ascii text)
and then just dump the data. See scanimage.c for an example and man
pnm, man ppm, man pgm.

Bye,
  Henning