Re: [PATCH i-g-t v3 4/4] chamelium: Dump obtained and reference frames to png on crc error

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On Mon, 2017-07-10 at 13:33 +0300, Martin Peres wrote:
> On 10/07/17 13:31, Paul Kocialkowski wrote:
> > On Thu, 2017-07-06 at 17:57 -0400, Lyude Paul wrote:
> > > 
> > > As well, one advantage we do have here from the chamelium end is
> > > that
> > > you can only really be screen grabbing from one port at a time. So
> > > you
> > > could actually just track stuff internally in the igt_chamelium
> > > API
> > > and when a user tries to download a framedump that we've already
> > > downloaded, we can just hand them back a cached copy of it.
> > 
> > I forgot to answer this point. I think this bring way too much
> > overhead
> > and is not really necessary anyway. With the solution I proposed in
> > my
> > previous email on this thread, the two wrapper functions (one for
> > CRC,
> > one for analogue frame comparison) will either dump the frame for
> > CRC
> > comparison (because it was never dumped before) or use the provided
> > one
> > for analogue comparison, so there is no particular need to track
> > what
> > was or wasn't dumped before.
> 
> No need to track, just encode it in the filename:
> $test-$subtest-error-crc-$crc.png
> 
> Just do not override existing files, and you are done :)

I suppose it would be best to have predictible filenames (so not
including the crc) to make it easier to grab the frame for an automated
testing framework, right?

So what about: frame-$test-$subtest-$qualifier.png, with $qualifier
being either "reference" or "dump". I don't think it's necessary to
indicate whether the error comes from crc or analogue frame testing:
this will already be contained in the subtest name.

-- 
Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxxxxxx>
Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo, Finland
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