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Camera Support #12026

Panasonic Lumix G9 - SH2 burst mode darkroom cannot read camera white balance info

Added by paul sorenson about 2 years ago. Updated almost 2 years ago.

Status:
Fixed
Priority:
Low
Assignee:
Roman Lebedev
Category:
Darkroom
Target version:
2.6.0
Start date:
02/22/2018
Due date:
% Done:

100%

Estimated time:
Affected Version:
git master branch

Description

Darkoom "failed to read camera white balance information from `P1000951.RW2'!"

I uploaded the image but don't see it in the repo and therefore have no link.

This does not occur with:
  1. single shot mode
  2. "H" burst mode

The example I uploaded is SH2 mode ("Burst shot 2 - using electronic shutter"). Lighttable displays the thumbnails but darkroom will not load the image.

Although I have tagged this as "camera support" I wonder if it makes sense for darkroom to load the image in spite of not being able to read the camera white balance info.

Actual darktable version showing: 2.4.1-1.fc27 which I built from source.

Associated revisions

Revision fd724e55 (diff)
Added by Roman Lebedev about 2 years ago

RawSpeed submodule update: TIFF/CIFF rewrite/hardening, RW2 sanity check loosening.

Fixes #12026.

History

#1 Updated by Roman Lebedev about 2 years ago

  • % Done changed from 0 to 20
  • Assignee set to Roman Lebedev
  • Status changed from New to Triaged

The actual error is displayed in console:

$ /opt/darktable/bin/darktable /tmp/P1000951.RW2 
[rawspeed] (P1000951.RW2) rawspeed::PanasonicDecompressor::PanasonicDecompressor(const rawspeed::RawImage &, const rawspeed::ByteStream &, bool, rawspeed::uint32), line 48: Unexpected image dimensions found: (5264; 3912)

So this fails https://github.com/darktable-org/rawspeed/blob/70b99ab97a6c4375da677318d1d9f05b4eee7857/src/librawspeed/decompressors/PanasonicDecompressor.cpp#L46-L48
So it's not he wb reading problem, it really can't read the image.

The image you got is (5264; 3912), and it expects (5488; 3904) max.
That check was introduced as quick band-aid for fuzzing to somehow limit the maximal image size
(because otherwise it would be able to come up with something like (10000; 10000), which would be considered an overflow.)

But now that the actual math (to compute the expected input data size for a given image dimensions) was added,
i think i can relax/remove that check.

#2 Updated by Roman Lebedev about 2 years ago

That being said, paul, could you please contribute the full sample set for that camera (to RPU), namely:
  • normal shutter: all 4 aspect ratios (yes, i know it produces the same raw)
  • every other shutter speed, 4:3 aspect ratio.
    (yes, i know there are already a samples for that camera, please do upload all the samples i asked regardless)

As usual, the camera needs to be stable and the content of all the samples needs to be as static as possible.

#3 Updated by paul sorenson about 2 years ago

Uploaded P1000989 - P1001011 RW2.
There may be a couple of duplicate aspect ratio shots.

#4 Updated by Roman Lebedev about 2 years ago

paul sorenson wrote:

Uploaded P1000989 - P1001011 RW2.
There may be a couple of duplicate aspect ratio shots.

Uhm, that is quite the opposite from what i have asked:

normal shutter: all 4 aspect ratios (yes, i know it produces the same raw)
every other shutter speed (edit: [SH2]/[SH1]/[SH2 PRE]/[SH1 PRE]), 4:3 aspect ratio.
(yes, i know there are already a samples for that camera, please do upload all the samples i asked regardless)

So that should have been 8 samples, at most.

Anyway...

#5 Updated by Roman Lebedev about 2 years ago

  • % Done changed from 20 to 100
  • Status changed from Triaged to Fixed

#6 Updated by paul sorenson about 2 years ago

Well it may not be what you wanted but you did ask for all "shutter speeds". If you wanted samples from all "burst modes" then I would have obliged ;)

I will upload some when I get a chance.

#7 Updated by Roman Lebedev about 2 years ago

paul sorenson wrote:

Well it may not be what you wanted but you did ask for all "shutter speeds". If you wanted samples from all "burst modes" then I would have obliged ;)

I will upload some when I get a chance.

Duh, lol, sorry :)
Indeed, i confused "shutter speeds" and "burst modes" there :)
(Still, take all the "burst modes" samples with just 4:3 aspect ratio)

#8 Updated by paul sorenson about 2 years ago

9 images uploaded (bonus M burst mode).
I annotated the mode in the comment but with some many images in my directory its possible I got it wrong.

#9 Updated by Roman Lebedev almost 2 years ago

  • Target version set to 2.6.0

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