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LibGfx/TIFF: Support WhiteIsZero parameter for grayscale images

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PhotometricInterpretation::WhiteIsZero is used to inverse black and
white on bilevel and grayscale images.
This commit is contained in:
Lucas CHOLLET 2023-12-01 19:29:55 -05:00 • committed by Andreas Kling
parent 64d7e386d2
commit 3ae29fdeec
1 changed files with 5 additions and 1 deletions
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6
Userland/Libraries/LibGfx/ImageFormats/TIFFLoader.cpp
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@ -97,7 +97,11 @@ private:
}
if (*m_metadata.samples_per_pixel() == 1) {
auto const luminosity = TRY(read_component(stream, bits_per_sample[0]));
auto luminosity = TRY(read_component(stream, bits_per_sample[0]));
if (m_metadata.photometric_interpretation() == PhotometricInterpretation::WhiteIsZero)
luminosity = ~luminosity;
return Color(luminosity, luminosity, luminosity);
}