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LibGfx/TIFF: Parse the T4Options CCITT field

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This field is described in: Section 11: CCITT Bilevel Encodings.
This commit is contained in:
Lucas CHOLLET 2024-01-14 15:03:54 -05:00 • committed by Andreas Kling
parent edffdc35a9
commit 26494600c4
3 changed files with 42 additions and 0 deletions
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19
Userland/Libraries/LibGfx/ImageFormats/TIFFLoader.cpp
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@ -18,6 +18,25 @@
namespace Gfx {
namespace {
CCITT::Group3Options parse_t4_options(u32 bit_field)
{
// Section 11: CCITT Bilevel Encodings
CCITT::Group3Options options {};
if (bit_field & 0b001)
options.dimensions = CCITT::Group3Options::Mode::TwoDimensions;
if (bit_field & 0b010)
options.compression = CCITT::Group3Options::Compression::Uncompressed;
if (bit_field & 0b100)
options.use_fill_bits = CCITT::Group3Options::UseFillBits::Yes;
return options;
}
}
namespace TIFF {
class TIFFLoadingContext {