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LibGfx: Implement serialization of NamedColor2TagData

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Nico Weber 2023-02-19 09:43:13 -05:00 • committed by Andreas Kling
parent eac9941766
commit 8f181e0e94
1 changed files with 38 additions and 0 deletions
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38
Userland/Libraries/LibGfx/ICC/BinaryWriter.cpp
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@ -125,6 +125,42 @@ static ErrorOr<ByteBuffer> encode_multi_localized_unicode(MultiLocalizedUnicodeT
return bytes;
}
static ErrorOr<ByteBuffer> encode_named_color_2(NamedColor2TagData const& tag_data)
{
// ICC v4, 10.17 namedColor2Type
unsigned const record_byte_size = 32 + sizeof(u16) * (3 + tag_data.number_of_device_coordinates());
auto bytes = TRY(ByteBuffer::create_uninitialized(2 * sizeof(u32) + sizeof(NamedColorHeader) + tag_data.size() * record_byte_size));
*bit_cast<BigEndian<u32>*>(bytes.data()) = (u32)NamedColor2TagData::Type;
*bit_cast<BigEndian<u32>*>(bytes.data() + 4) = 0;
auto& header = *bit_cast<NamedColorHeader*>(bytes.data() + 8);
header.vendor_specific_flag = tag_data.vendor_specific_flag();
header.count_of_named_colors = tag_data.size();
header.number_of_device_coordinates_of_each_named_color = tag_data.number_of_device_coordinates();
memset(header.prefix_for_each_color_name, 0, 32);
memcpy(header.prefix_for_each_color_name, tag_data.prefix().bytes().data(), tag_data.prefix().bytes().size());
memset(header.suffix_for_each_color_name, 0, 32);
memcpy(header.suffix_for_each_color_name, tag_data.suffix().bytes().data(), tag_data.suffix().bytes().size());
u8* record = bytes.data() + 8 + sizeof(NamedColorHeader);
for (size_t i = 0; i < tag_data.size(); ++i) {
memset(record, 0, 32);
memcpy(record, tag_data.root_name(i).bytes().data(), tag_data.root_name(i).bytes().size());
auto* components = bit_cast<BigEndian<u16>*>(record + 32);
components[0] = tag_data.pcs_coordinates(i).xyz.x;
components[1] = tag_data.pcs_coordinates(i).xyz.y;
components[2] = tag_data.pcs_coordinates(i).xyz.z;
for (size_t j = 0; j < tag_data.number_of_device_coordinates(); ++j)
components[3 + j] = tag_data.device_coordinates(i)[j];
record += record_byte_size;
}
return bytes;
}
static ErrorOr<ByteBuffer> encode_parametric_curve(ParametricCurveTagData const& tag_data)
{
// ICC v4, 10.18 parametricCurveType
@ -278,6 +314,8 @@ static ErrorOr<ByteBuffer> encode_tag_data(TagData const& tag_data)
return encode_measurement(static_cast<MeasurementTagData const&>(tag_data));
case MultiLocalizedUnicodeTagData::Type:
return encode_multi_localized_unicode(static_cast<MultiLocalizedUnicodeTagData const&>(tag_data));
case NamedColor2TagData::Type:
return encode_named_color_2(static_cast<NamedColor2TagData const&>(tag_data));
case ParametricCurveTagData::Type:
return encode_parametric_curve(static_cast<ParametricCurveTagData const&>(tag_data));
case S15Fixed16ArrayTagData::Type: