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LibGfx: Implement serialization of TextTagData

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Nico Weber 2023-02-17 21:43:05 -05:00 committed by Andreas Kling
parent eaa0e3484b
commit a1de65c34f
Notes: sideshowbarker 2024-07-18 03:23:00 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/a1de65c34f
Pull-request: https://github.com/SerenityOS/serenity/pull/17513
1 changed files with 16 additions and 0 deletions
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16
Userland/Libraries/LibGfx/ICC/BinaryWriter.cpp
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@ -149,6 +149,20 @@ static ErrorOr<ByteBuffer> encode_signature(SignatureTagData const& tag_data)
return bytes;
}
static ErrorOr<ByteBuffer> encode_text(TextTagData const& tag_data)
{
// ICC v4, 10.24 textType
// "The textType is a simple text structure that contains a 7-bit ASCII text string. The length of the string is obtained
// by subtracting 8 from the element size portion of the tag itself. This string shall be terminated with a 00h byte."
auto text_bytes = tag_data.text().bytes();
auto bytes = TRY(ByteBuffer::create_uninitialized(2 * sizeof(u32) + text_bytes.size() + 1));
*bit_cast<BigEndian<u32>*>(bytes.data()) = (u32)TextTagData::Type;
*bit_cast<BigEndian<u32>*>(bytes.data() + 4) = 0;
memcpy(bytes.data() + 8, text_bytes.data(), text_bytes.size());
*(bytes.data() + 8 + text_bytes.size()) = '\0';
return bytes;
}
static ErrorOr<ByteBuffer> encode_xyz(XYZTagData const& tag_data)
{
// ICC v4, 10.31 XYZType
@ -180,6 +194,8 @@ static ErrorOr<ByteBuffer> encode_tag_data(TagData const& tag_data)
return encode_s15_fixed_array(static_cast<S15Fixed16ArrayTagData const&>(tag_data));
case SignatureTagData::Type:
return encode_signature(static_cast<SignatureTagData const&>(tag_data));
case TextTagData::Type:
return encode_text(static_cast<TextTagData const&>(tag_data));
case XYZTagData::Type:
return encode_xyz(static_cast<XYZTagData const&>(tag_data));
}