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LibGfx: Implement serialization of ChromaticityTagData

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Nico Weber 2023-02-17 21:22:32 -05:00 committed by Andreas Kling
parent ececea9a1c
commit fd590fe55d
Notes: sideshowbarker 2024-07-17 17:38:29 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/fd590fe55d
Pull-request: https://github.com/SerenityOS/serenity/pull/17513
1 changed files with 22 additions and 0 deletions
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22
Userland/Libraries/LibGfx/ICC/BinaryWriter.cpp
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@ -14,6 +14,26 @@
namespace Gfx::ICC {
static ErrorOr<ByteBuffer> encode_chromaticity(ChromaticityTagData const& tag_data)
{
// ICC v4, 10.2 chromaticityType
auto bytes = TRY(ByteBuffer::create_uninitialized(2 * sizeof(u32) + 2 * sizeof(u16) + tag_data.xy_coordinates().size() * 2 * sizeof(u16Fixed16Number)));
*bit_cast<BigEndian<u32>*>(bytes.data()) = (u32)ChromaticityTagData::Type;
*bit_cast<BigEndian<u32>*>(bytes.data() + 4) = 0;
*bit_cast<BigEndian<u16>*>(bytes.data() + 8) = tag_data.xy_coordinates().size();
*bit_cast<BigEndian<u16>*>(bytes.data() + 10) = (u16)tag_data.phosphor_or_colorant_type();
auto* coordinates = bit_cast<BigEndian<u16Fixed16Number>*>(bytes.data() + 12);
for (size_t i = 0; i < tag_data.xy_coordinates().size(); ++i) {
coordinates[2 * i] = tag_data.xy_coordinates()[i].x.raw();
coordinates[2 * i + 1] = tag_data.xy_coordinates()[i].y.raw();
}
return bytes;
}
static ErrorOr<ByteBuffer> encode_multi_localized_unicode(MultiLocalizedUnicodeTagData const& tag_data)
{
// ICC v4, 10.15 multiLocalizedUnicodeType
@ -108,6 +128,8 @@ static ErrorOr<ByteBuffer> encode_xyz(XYZTagData const& tag_data)
static ErrorOr<ByteBuffer> encode_tag_data(TagData const& tag_data)
{
switch (tag_data.type()) {
case ChromaticityTagData::Type:
return encode_chromaticity(static_cast<ChromaticityTagData const&>(tag_data));
case MultiLocalizedUnicodeTagData::Type:
return encode_multi_localized_unicode(static_cast<MultiLocalizedUnicodeTagData const&>(tag_data));
case ParametricCurveTagData::Type: