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LibGfx+icc: Add ICCProfile support for s15Fixed16ArrayType and print it

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This is the type of the chromaticAdaptationTag, which is a required tag
in v4 profiles for all non-DeviceLink profiles.
This commit is contained in:
Nico Weber 2023-01-23 11:00:22 -05:00 • committed by Linus Groh
parent 9c5820326d
commit 9756842734
3 changed files with 65 additions and 0 deletions
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24
Userland/Libraries/LibGfx/ICCProfile.cpp
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@ -612,6 +612,28 @@ ErrorOr<NonnullRefPtr<MultiLocalizedUnicodeTagData>> MultiLocalizedUnicodeTagDat
return adopt_ref(*new MultiLocalizedUnicodeTagData(offset, size, move(records)));
}
ErrorOr<NonnullRefPtr<S15Fixed16ArrayTagData>> S15Fixed16ArrayTagData::from_bytes(ReadonlyBytes bytes, u32 offset, u32 size)
{
// ICC v4, 10.22 s15Fixed16ArrayType
VERIFY(tag_type(bytes) == Type);
TRY(check_reserved(bytes));
// "This type represents an array of generic 4-byte (32-bit) fixed point quantity. The number of values is determined
// from the size of the tag."
size_t byte_size = bytes.size() - 8;
if (byte_size % sizeof(s15Fixed16Number) != 0)
return Error::from_string_literal("ICC::Profile: s15Fixed16ArrayType has wrong size");
size_t count = byte_size / sizeof(s15Fixed16Number);
BigEndian<s15Fixed16Number> const* raw_values = bit_cast<BigEndian<s15Fixed16Number> const*>(bytes.data() + 8);
Vector<S15Fixed16, 9> values;
TRY(values.try_resize(count));
for (size_t i = 0; i < count; ++i)
values[i] = S15Fixed16::create_raw(raw_values[i]);
return adopt_ref(*new S15Fixed16ArrayTagData(offset, size, move(values)));
}
ErrorOr<NonnullRefPtr<TextDescriptionTagData>> TextDescriptionTagData::from_bytes(ReadonlyBytes bytes, u32 offset, u32 size)
{
// ICC v2, 6.5.17 textDescriptionType
@ -850,6 +872,8 @@ ErrorOr<NonnullRefPtr<TagData>> Profile::read_tag(ReadonlyBytes bytes, Detail::T
switch (type) {
case MultiLocalizedUnicodeTagData::Type:
return MultiLocalizedUnicodeTagData::from_bytes(tag_bytes, entry.offset_to_beginning_of_tag_data_element, entry.size_of_tag_data_element);
case S15Fixed16ArrayTagData::Type:
return S15Fixed16ArrayTagData::from_bytes(tag_bytes, entry.offset_to_beginning_of_tag_data_element, entry.size_of_tag_data_element);
case TextDescriptionTagData::Type:
return TextDescriptionTagData::from_bytes(tag_bytes, entry.offset_to_beginning_of_tag_data_element, entry.size_of_tag_data_element);
case TextTagData::Type: