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LibGfx: Split ICC/Profile.{h,cpp} into several files
s15Fixed16Number and XYZNumber are somewhat awkwardly duplicated in both Profile.cpp and TagTypes.cpp. Other than that, this is a pure code move. No behavior change.
This commit is contained in:
Nico Weber
Linus Groh
parent
6d51d8ad32
commit
b5deccf859
9 changed files with 876 additions and 781 deletions
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@ -6,7 +6,7 @@
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#include <AK/Endian.h>
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#include <LibGfx/ICC/Profile.h>
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#include <LibTextCodec/Decoder.h>
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#include <LibGfx/ICC/Tags.h>
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#include <math.h>
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#include <time.h>
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@ -395,18 +395,6 @@ URL device_model_url(DeviceModel device_model)
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device_model.c0(), device_model.c1(), device_model.c2(), device_model.c3(), device_model.value));
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}
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Optional<StringView> tag_signature_spec_name(TagSignature tag_signature)
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{
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switch (tag_signature) {
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#define TAG(name, id) \
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case name: \
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return #name##sv;
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ENUMERATE_TAG_SIGNATURES(TAG)
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#undef TAG
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}
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return {};
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}
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StringView device_class_name(DeviceClass device_class)
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{
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switch (device_class) {
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@ -539,363 +527,6 @@ DeviceAttributes::DeviceAttributes(u64 bits)
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{
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}
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static TagTypeSignature tag_type(ReadonlyBytes tag_bytes)
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{
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VERIFY(tag_bytes.size() >= sizeof(u32));
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return *bit_cast<BigEndian<TagTypeSignature> const*>(tag_bytes.data());
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}
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static ErrorOr<void> check_reserved(ReadonlyBytes tag_bytes)
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{
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if (tag_bytes.size() < 2 * sizeof(u32))
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return Error::from_string_literal("ICC::Profile: Not enough data for tag reserved field");
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if (*bit_cast<BigEndian<u32> const*>(tag_bytes.data() + sizeof(u32)) != 0)
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return Error::from_string_literal("ICC::Profile: tag reserved field not 0");
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return {};
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}
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ErrorOr<NonnullRefPtr<CurveTagData>> CurveTagData::from_bytes(ReadonlyBytes bytes, u32 offset, u32 size)
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{
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// ICC v4, 10.6 curveType
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VERIFY(tag_type(bytes) == Type);
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TRY(check_reserved(bytes));
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if (bytes.size() < 3 * sizeof(u32))
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return Error::from_string_literal("ICC::Profile: curveType has not enough data for count");
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u32 count = *bit_cast<BigEndian<u32> const*>(bytes.data() + 8);
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if (bytes.size() < 3 * sizeof(u32) + count * sizeof(u16))
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return Error::from_string_literal("ICC::Profile: curveType has not enough data for curve points");
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BigEndian<u16> const* raw_values = bit_cast<BigEndian<u16> const*>(bytes.data() + 12);
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Vector<u16> values;
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TRY(values.try_resize(count));
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for (u32 i = 0; i < count; ++i)
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values[i] = raw_values[i];
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return adopt_ref(*new CurveTagData(offset, size, move(values)));
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}
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ErrorOr<NonnullRefPtr<MultiLocalizedUnicodeTagData>> MultiLocalizedUnicodeTagData::from_bytes(ReadonlyBytes bytes, u32 offset, u32 size)
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{
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// ICC v4, 10.15 multiLocalizedUnicodeType
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VERIFY(tag_type(bytes) == Type);
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TRY(check_reserved(bytes));
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// "Multiple strings within this tag may share storage locations. For example, en/US and en/UK can refer to the
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// same string data."
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// This implementation makes redudant string copies in that case.
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// Most of the time, this costs just a few bytes, so that seems ok.
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if (bytes.size() < 4 * sizeof(u32))
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return Error::from_string_literal("ICC::Profile: multiLocalizedUnicodeType has not enough data");
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// Table 54 — multiLocalizedUnicodeType
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u32 number_of_records = *bit_cast<BigEndian<u32> const*>(bytes.data() + 8);
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u32 record_size = *bit_cast<BigEndian<u32> const*>(bytes.data() + 12);
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// "The fourth field of this tag, the record size, should contain the value 12, which corresponds to the size in bytes
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// of each record. Any code that needs to access the nth record should determine the record’s offset by multiplying
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// n by the contents of this size field and adding 16. This minor extra effort allows for future expansion of the record
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// encoding, should the need arise, without having to define a new tag type."
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if (record_size < 12)
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return Error::from_string_literal("ICC::Profile: multiLocalizedUnicodeType record size too small");
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if (bytes.size() < 16 + number_of_records * record_size)
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return Error::from_string_literal("ICC::Profile: multiLocalizedUnicodeType not enough data for records");
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Vector<Record> records;
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TRY(records.try_resize(number_of_records));
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// "For the definition of language codes and country codes, see respectively
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// ISO 639-1 and ISO 3166-1. The Unicode strings in storage should be encoded as 16-bit big-endian, UTF-16BE,
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// and should not be NULL terminated."
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auto& utf_16be_decoder = *TextCodec::decoder_for("utf-16be");
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struct RawRecord {
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BigEndian<u16> language_code;
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BigEndian<u16> country_code;
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BigEndian<u32> string_length_in_bytes;
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BigEndian<u32> string_offset_in_bytes;
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};
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for (u32 i = 0; i < number_of_records; ++i) {
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size_t offset = 16 + i * record_size;
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RawRecord record = *bit_cast<RawRecord const*>(bytes.data() + offset);
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records[i].iso_639_1_language_code = record.language_code;
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records[i].iso_3166_1_country_code = record.country_code;
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if (record.string_length_in_bytes % 2 != 0)
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return Error::from_string_literal("ICC::Profile: multiLocalizedUnicodeType odd UTF-16 byte length");
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if (record.string_offset_in_bytes + record.string_length_in_bytes > bytes.size())
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return Error::from_string_literal("ICC::Profile: multiLocalizedUnicodeType string offset out of bounds");
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StringView utf_16be_data { bytes.data() + record.string_offset_in_bytes, record.string_length_in_bytes };
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records[i].text = TRY(String::from_deprecated_string(utf_16be_decoder.to_utf8(utf_16be_data)));
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}
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return adopt_ref(*new MultiLocalizedUnicodeTagData(offset, size, move(records)));
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}
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unsigned ParametricCurveTagData::parameter_count(FunctionType function_type)
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{
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switch (function_type) {
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case FunctionType::Type0:
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return 1;
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case FunctionType::Type1:
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return 3;
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case FunctionType::Type2:
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return 4;
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case FunctionType::Type3:
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return 5;
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case FunctionType::Type4:
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return 7;
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}
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VERIFY_NOT_REACHED();
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}
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ErrorOr<NonnullRefPtr<ParametricCurveTagData>> ParametricCurveTagData::from_bytes(ReadonlyBytes bytes, u32 offset, u32 size)
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{
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// ICC v4, 10.18 parametricCurveType
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VERIFY(tag_type(bytes) == Type);
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TRY(check_reserved(bytes));
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// "The parametricCurveType describes a one-dimensional curve by specifying one of a predefined set of functions
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// using the parameters."
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if (bytes.size() < 2 * sizeof(u32) + 2 * sizeof(u16))
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return Error::from_string_literal("ICC::Profile: parametricCurveType has not enough data");
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u16 raw_function_type = *bit_cast<BigEndian<u16> const*>(bytes.data() + 8);
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u16 reserved = *bit_cast<BigEndian<u16> const*>(bytes.data() + 10);
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if (reserved != 0)
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return Error::from_string_literal("ICC::Profile: parametricCurveType reserved u16 after function type not 0");
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if (raw_function_type > 4)
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return Error::from_string_literal("ICC::Profile: parametricCurveType unknown function type");
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FunctionType function_type = (FunctionType)raw_function_type;
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unsigned count = parameter_count(function_type);
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if (bytes.size() < 2 * sizeof(u32) + 2 * sizeof(u16) + count * sizeof(s15Fixed16Number))
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return Error::from_string_literal("ICC::Profile: parametricCurveType has not enough data for parameters");
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BigEndian<s15Fixed16Number> const* raw_parameters = bit_cast<BigEndian<s15Fixed16Number> const*>(bytes.data() + 12);
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Array<S15Fixed16, 7> parameters;
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parameters.fill(0);
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for (unsigned i = 0; i < count; ++i)
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parameters[i] = S15Fixed16::create_raw(raw_parameters[i]);
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return adopt_ref(*new ParametricCurveTagData(offset, size, function_type, move(parameters)));
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}
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ErrorOr<NonnullRefPtr<S15Fixed16ArrayTagData>> S15Fixed16ArrayTagData::from_bytes(ReadonlyBytes bytes, u32 offset, u32 size)
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{
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// ICC v4, 10.22 s15Fixed16ArrayType
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VERIFY(tag_type(bytes) == Type);
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TRY(check_reserved(bytes));
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// "This type represents an array of generic 4-byte (32-bit) fixed point quantity. The number of values is determined
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// from the size of the tag."
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size_t byte_size = bytes.size() - 8;
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if (byte_size % sizeof(s15Fixed16Number) != 0)
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return Error::from_string_literal("ICC::Profile: s15Fixed16ArrayType has wrong size");
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size_t count = byte_size / sizeof(s15Fixed16Number);
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BigEndian<s15Fixed16Number> const* raw_values = bit_cast<BigEndian<s15Fixed16Number> const*>(bytes.data() + 8);
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Vector<S15Fixed16, 9> values;
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TRY(values.try_resize(count));
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for (size_t i = 0; i < count; ++i)
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values[i] = S15Fixed16::create_raw(raw_values[i]);
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return adopt_ref(*new S15Fixed16ArrayTagData(offset, size, move(values)));
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}
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ErrorOr<NonnullRefPtr<TextDescriptionTagData>> TextDescriptionTagData::from_bytes(ReadonlyBytes bytes, u32 offset, u32 size)
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{
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// ICC v2, 6.5.17 textDescriptionType
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// textDescriptionType is no longer in the V4 spec.
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// In both the V2 and V4 specs, 'desc' is a required tag. In V4, it has type multiLocalizedUnicodeType,
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// but in V2 it has type textDescriptionType. Since 'desc' is required, this type is present in every
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// V2 icc file, and there are still many V2 files in use. So textDescriptionType is here to stay for now.
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// It's a very 90s type, preceding universal adoption of Unicode.
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// "The textDescriptionType is a complex structure that contains three types of text description structures:
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// 7-bit ASCII, Unicode and ScriptCode. Since no single standard method for specifying localizable character
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// sets exists across the major platform vendors, including all three provides access for the major operating
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// systems. The 7-bit ASCII description is to be an invariant, nonlocalizable name for consistent reference.
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// It is preferred that both the Unicode and ScriptCode structures be properly localized."
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VERIFY(tag_type(bytes) == Type);
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TRY(check_reserved(bytes));
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// 7-bit ASCII
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// "ASCII: The count is the length of the string in bytes including the null terminator."
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if (bytes.size() < 3 * sizeof(u32))
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return Error::from_string_literal("ICC::Profile: textDescriptionType has not enough data for ASCII size");
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u32 ascii_description_length = *bit_cast<BigEndian<u32> const*>(bytes.data() + 8);
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if (bytes.size() < 3 * sizeof(u32) + ascii_description_length)
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return Error::from_string_literal("ICC::Profile: textDescriptionType has not enough data for ASCII description");
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u8 const* ascii_description_data = bytes.data() + 3 * sizeof(u32);
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for (u32 i = 0; i < ascii_description_length; ++i) {
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if (ascii_description_data[i] >= 128)
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return Error::from_string_literal("ICC::Profile: textDescriptionType ASCII description not 7-bit ASCII");
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}
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if (ascii_description_length == 0)
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return Error::from_string_literal("ICC::Profile: textDescriptionType ASCII description length does not include trailing \\0");
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if (ascii_description_data[ascii_description_length - 1] != '\0')
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return Error::from_string_literal("ICC::Profile: textDescriptionType ASCII description not \\0-terminated");
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StringView ascii_description { ascii_description_data, ascii_description_length - 1 };
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// Unicode
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if (bytes.size() < 3 * sizeof(u32) + ascii_description_length + 2 * sizeof(u32))
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return Error::from_string_literal("ICC::Profile: textDescriptionType has not enough data for Unicode metadata");
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// "Because the Unicode language code and Unicode count immediately follow the ASCII description,
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// their alignment is not correct when the ASCII count is not a multiple of four"
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// So we can't use BigEndian<u32> here.
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u8 const* cursor = ascii_description_data + ascii_description_length;
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u32 unicode_language_code = (u32)(cursor[0] << 24) | (u32)(cursor[1] << 16) | (u32)(cursor[2] << 8) | (u32)cursor[3];
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cursor += 4;
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// "Unicode: The count is the number of characters including a Unicode null where a character is always two bytes."
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// This implies UCS-2.
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u32 unicode_description_length = (u32)(cursor[0] << 24) | (u32)(cursor[1] << 16) | (u32)(cursor[2] << 8) | (u32)cursor[3];
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cursor += 4;
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if (bytes.size() < 3 * sizeof(u32) + ascii_description_length + 2 * sizeof(u32) + 2 * unicode_description_length)
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return Error::from_string_literal("ICC::Profile: textDescriptionType has not enough data for Unicode description");
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u8 const* unicode_description_data = cursor;
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cursor += 2 * unicode_description_length;
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for (u32 i = 0; i < unicode_description_length; ++i) {
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u16 code_point = (u16)(unicode_description_data[2 * i] << 8) | (u16)unicode_description_data[2 * i + 1];
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if (is_unicode_surrogate(code_point))
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return Error::from_string_literal("ICC::Profile: textDescriptionType Unicode description is not valid UCS-2");
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}
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// If Unicode is not native on the platform, then the Unicode language code and Unicode count should be
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// filled in as 0, with no data placed in the Unicode localizable profile description area.
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Optional<String> unicode_description;
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if (unicode_description_length > 0) {
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u16 last_code_point = (u16)(unicode_description_data[2 * (unicode_description_length - 1)] << 8) | (u16)unicode_description_data[2 * (unicode_description_length - 1) + 1];
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if (last_code_point != 0)
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return Error::from_string_literal("ICC::Profile: textDescriptionType Unicode description not \\0-terminated");
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StringView utf_16be_data { unicode_description_data, 2 * (unicode_description_length - 1) };
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unicode_description = TRY(String::from_deprecated_string(TextCodec::decoder_for("utf-16be")->to_utf8(utf_16be_data)));
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}
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// ScriptCode
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// What is a script code? It's an old, obsolete mac thing. It looks like it's documented in
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// https://developer.apple.com/library/archive/documentation/mac/pdf/Text.pdf
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// "Script Codes, Language Codes, and Region Codes 1", PDF page 82.
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// I haven't found a complete explanation though. PDF page 84 suggests that:
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// - There are 16 script codes
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// - 0 is Roman, 1 is Japanese, 2 is Chinese, 3 is Korean, 9 is Devanagari
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// Roman uses https://en.wikipedia.org/wiki/Mac_OS_Roman as encoding (also on page 89),
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// and "All non-Roman script systems include Roman as a subscript" (page 87).
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// Aha, "Script Codes 6" on page 676 has the complete list! There are 32 of them.
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// The document mentions that each script code possibly has its own encoding, but I haven't found
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// details on the encodings for script codes other than 0 (which uses Mac OS Roman).
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// http://www.kreativekorp.com/charset/encoding/ has an unofficial list of old Mac OS encodings,
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// but it's not clear to me which script codes map to which encoding.
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// From here on, quotes are from the ICC spec on textDescriptionType again.
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// "The ScriptCode code is misaligned when the ASCII count is odd."
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// So don't use BigEndian<u16> here.
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u16 scriptcode_code = (u16)(cursor[0] << 8) | (u32)cursor[1];
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cursor += 2;
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// "ScriptCode: The count is the length of the string in bytes including the terminating null."
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u8 macintosh_description_length = *cursor;
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cursor += 1;
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if (macintosh_description_length > 67)
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return Error::from_string_literal("ICC::Profile: textDescriptionType ScriptCode description too long");
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u8 const* macintosh_description_data = cursor;
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// "If Scriptcode is not native on the platform, then the ScriptCode code and ScriptCode count should be filled
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// in as 0. The 67-byte localizable Macintosh profile description should be filled with 0’s."
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Optional<String> macintosh_description;
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if (macintosh_description_length > 0) {
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// ScriptCode is old-timey and a complicated to fully support. Lightroom Classic does write the ScriptCode section of textDescriptionType.
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// But supporting only ASCII MacRoman is good enough for those files, and easy to implement, so let's do only that for now.
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if (scriptcode_code == 0) { // MacRoman
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if (macintosh_description_data[macintosh_description_length - 1] != '\0')
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return Error::from_string_literal("ICC::Profile: textDescriptionType ScriptCode not \\0-terminated");
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macintosh_description = TRY(String::from_deprecated_string(TextCodec::decoder_for("x-mac-roman")->to_utf8({ macintosh_description_data, (size_t)macintosh_description_length - 1 })));
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} else {
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dbgln("TODO: ICCProfile textDescriptionType ScriptCode {}, length {}", scriptcode_code, macintosh_description_length);
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}
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}
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return adopt_ref(*new TextDescriptionTagData(offset, size, TRY(String::from_utf8(ascii_description)), unicode_language_code, move(unicode_description), move(macintosh_description)));
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}
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ErrorOr<NonnullRefPtr<TextTagData>> TextTagData::from_bytes(ReadonlyBytes bytes, u32 offset, u32 size)
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{
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// ICC v4, 10.24 textType
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VERIFY(tag_type(bytes) == Type);
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TRY(check_reserved(bytes));
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// "The textType is a simple text structure that contains a 7-bit ASCII text string. The length of the string is obtained
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// by subtracting 8 from the element size portion of the tag itself. This string shall be terminated with a 00h byte."
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u32 length = bytes.size() - 8;
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u8 const* text_data = bytes.data() + 8;
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for (u32 i = 0; i < length; ++i) {
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if (text_data[i] >= 128)
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return Error::from_string_literal("ICC::Profile: textType data not 7-bit ASCII");
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}
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if (length == 0)
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return Error::from_string_literal("ICC::Profile: textType too short for \\0 byte");
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if (text_data[length - 1] != '\0')
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return Error::from_string_literal("ICC::Profile: textType data not \\0-terminated");
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return adopt_ref(*new TextTagData(offset, size, TRY(String::from_utf8(StringView(text_data, length - 1)))));
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}
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ErrorOr<NonnullRefPtr<XYZTagData>> XYZTagData::from_bytes(ReadonlyBytes bytes, u32 offset, u32 size)
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{
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// ICC v4, 10.31 XYZType
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VERIFY(tag_type(bytes) == Type);
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TRY(check_reserved(bytes));
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// "The XYZType contains an array of three encoded values for PCSXYZ, CIEXYZ, or nCIEXYZ values. The
|
||||
// number of sets of values is determined from the size of the tag."
|
||||
size_t byte_size = bytes.size() - 8;
|
||||
if (byte_size % sizeof(XYZNumber) != 0)
|
||||
return Error::from_string_literal("ICC::Profile: XYZType has wrong size");
|
||||
|
||||
size_t xyz_count = byte_size / sizeof(XYZNumber);
|
||||
XYZNumber const* raw_xyzs = bit_cast<XYZNumber const*>(bytes.data() + 8);
|
||||
Vector<XYZ, 1> xyzs;
|
||||
TRY(xyzs.try_resize(xyz_count));
|
||||
for (size_t i = 0; i < xyz_count; ++i)
|
||||
xyzs[i] = (XYZ)raw_xyzs[i];
|
||||
|
||||
return adopt_ref(*new XYZTagData(offset, size, move(xyzs)));
|
||||
}
|
||||
|
||||
ErrorOr<void> Profile::read_header(ReadonlyBytes bytes)
|
||||
{
|
||||
if (bytes.size() < sizeof(ICCHeader))
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue