Relax DNG black level parsing

[kmilos]

Use the default BlackLevelRepeatDim (1,1) if the single entry value is 1

This e.g. allows the black level of Pentax K-3 Mark III Monochrome DNG from RPU to be parsed instead of being ignored:

Exif.SubImage1.BlackLevelRepeatDim           Short       1  1
Exif.SubImage1.BlackLevel                    Long        1  2048

Alternatively, could read the one value if count is 1, and copy it?

[codecov]

Codecov Report

Patch coverage: 75.00% and project coverage change: -0.01% ⚠️

Comparison is base (2f1e314) 59.10% compared to head (bc952cf) 59.10%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #521      +/-   ##
===========================================
- Coverage    59.10%   59.10%   -0.01%     
===========================================
  Files          232      232              
  Lines        13898    13900       +2     
  Branches      1938     1938              
===========================================
+ Hits          8214     8215       +1     
- Misses        5551     5552       +1     
  Partials       133      133              

Flag	Coverage Δ
benchmarks	8.18% <0.00%> (-0.01%)	⬇️
integration	47.51% <75.00%> (+<0.01%)	⬆️
linux	57.01% <75.00%> (-0.01%)	⬇️
macOS	18.68% <0.00%> (-0.01%)	⬇️
rpu_u	47.51% <75.00%> (+<0.01%)	⬆️
unittests	18.22% <0.00%> (-0.01%)	⬇️
windows	∅ <ø> (∅)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
src/librawspeed/decoders/DngDecoder.cpp	52.67% <75.00%> (-0.02%)	⬇️

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[LebedevRI]

What were they thinking? :/
Was this reported to Pentax?

In this case, i think i'm, at most, okay with

Alternatively, could read the one value if count is 1, and copy it?

[kmilos]

Was this reported to Pentax?

Don't think so. You know where/how?

[LebedevRI]

Was this reported to Pentax?

Don't think so. You know where/how?

I haven't managed to find any kind of non-user-facing side,
so i guess the usual "straight-to-spam" https://www.ricoh.com/contact

[LebedevRI]

@Milos thank you.

But this really needs to be reported to Ricoh/Pentax.

[kmilos]

Will do. I guess it doesn't hurt and improves the chances if you do it as well?