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LibGfx: Read data color space from ICCProfile header

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Nico Weber 2022-12-30 07:54:58 -05:00 committed by Tim Flynn
parent 7bb4cd74b8
commit eaf1f67bb1
Notes: sideshowbarker 2024-07-17 02:26:16 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/eaf1f67bb1
Pull-request: https://github.com/SerenityOS/serenity/pull/16724
Reviewed-by: https://github.com/trflynn89 ✅
2 changed files with 126 additions and 1 deletions
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95
Userland/Libraries/LibGfx/ICCProfile.cpp
View file

@ -77,7 +77,7 @@ struct ICCHeader {
BigEndian<u16> profile_version_zero;
BigEndian<DeviceClass> profile_device_class;
BigEndian<u32> data_color_space;
BigEndian<ColorSpace> data_color_space;
BigEndian<u32> pcs; // "Profile Connection Space"
DateTimeNumber profile_creation_time;
@ -126,6 +126,40 @@ ErrorOr<DeviceClass> parse_device_class(ICCHeader const& header)
return Error::from_string_literal("ICC::Profile: Invalid device class");
}
ErrorOr<ColorSpace> parse_data_color_space(ICCHeader const& header)
{
// ICC v4, 7.2.6 Data colour space field
switch (header.data_color_space) {
case ColorSpace::nCIEXYZ:
case ColorSpace::CIELAB:
case ColorSpace::CIELUV:
case ColorSpace::YCbCr:
case ColorSpace::CIEYxy:
case ColorSpace::RGB:
case ColorSpace::Gray:
case ColorSpace::HSV:
case ColorSpace::HLS:
case ColorSpace::CMYK:
case ColorSpace::CMY:
case ColorSpace::TwoColor:
case ColorSpace::ThreeColor:
case ColorSpace::FourColor:
case ColorSpace::FiveColor:
case ColorSpace::SixColor:
case ColorSpace::SevenColor:
case ColorSpace::EightColor:
case ColorSpace::NineColor:
case ColorSpace::TenColor:
case ColorSpace::ElevenColor:
case ColorSpace::TwelveColor:
case ColorSpace::ThirteenColor:
case ColorSpace::FourteenColor:
case ColorSpace::FifteenColor:
return header.data_color_space;
}
return Error::from_string_literal("ICC::Profile: Invalid data color space");
}
ErrorOr<time_t> parse_creation_date_time(ICCHeader const& header)
{
// iCC v4, 7.2.8 Date and time field
@ -163,6 +197,64 @@ char const* device_class_name(DeviceClass device_class)
}
}
char const* color_space_name(ColorSpace color_space)
{
switch (color_space) {
case ColorSpace::nCIEXYZ:
return "nCIEXYZ";
case ColorSpace::CIELAB:
return "CIELAB";
case ColorSpace::CIELUV:
return "CIELUV";
case ColorSpace::YCbCr:
return "YCbCr";
case ColorSpace::CIEYxy:
return "CIEYxy";
case ColorSpace::RGB:
return "RGB";
case ColorSpace::Gray:
return "Gray";
case ColorSpace::HSV:
return "HSV";
case ColorSpace::HLS:
return "HLS";
case ColorSpace::CMYK:
return "CMYK";
case ColorSpace::CMY:
return "CMY";
case ColorSpace::TwoColor:
return "2 color";
case ColorSpace::ThreeColor:
return "3 color (other than XYZ, Lab, Luv, YCbCr, CIEYxy, RGB, HSV, HLS, CMY)";
case ColorSpace::FourColor:
return "4 color (other than CMYK)";
case ColorSpace::FiveColor:
return "5 color";
case ColorSpace::SixColor:
return "6 color";
case ColorSpace::SevenColor:
return "7 color";
case ColorSpace::EightColor:
return "8 color";
case ColorSpace::NineColor:
return "9 color";
case ColorSpace::TenColor:
return "10 color";
case ColorSpace::ElevenColor:
return "11 color";
case ColorSpace::TwelveColor:
return "12 color";
case ColorSpace::ThirteenColor:
return "13 color";
case ColorSpace::FourteenColor:
return "14 color";
case ColorSpace::FifteenColor:
return "15 color";
default:
return NULL;
}
}
ErrorOr<NonnullRefPtr<Profile>> Profile::try_load_from_externally_owned_memory(ReadonlyBytes bytes)
{
auto profile = adopt_ref(*new Profile());
@ -175,6 +267,7 @@ ErrorOr<NonnullRefPtr<Profile>> Profile::try_load_from_externally_owned_memory(R
TRY(parse_file_signature(header));
profile->m_version = TRY(parse_version(header));
profile->m_device_class = TRY(parse_device_class(header));
profile->m_data_color_space = TRY(parse_data_color_space(header));
profile->m_creation_timestamp = TRY(parse_creation_date_time(header));
return profile;

32
Userland/Libraries/LibGfx/ICCProfile.h
View file

@ -45,17 +45,49 @@ enum class DeviceClass : u32 {
};
char const* device_class_name(DeviceClass);
// ICC v4, 7.2.6 Data colour space field, Table 19 — Data colour space signatures
enum class ColorSpace : u32 {
nCIEXYZ = 0x58595A20, // 'XYZ '
CIELAB = 0x4C616220, // 'Lab '
CIELUV = 0x4C757620, // 'Luv '
YCbCr = 0x59436272, // 'YCbr'
CIEYxy = 0x59787920, // 'Yxy '
RGB = 0x52474220, // 'RGB '
Gray = 0x47524159, // 'GRAY'
HSV = 0x48535620, // 'HSV '
HLS = 0x484C5320, // 'HLS '
CMYK = 0x434D594B, // 'CMYK'
CMY = 0x434D5920, // 'CMY '
TwoColor = 0x32434C52, // '2CLR'
ThreeColor = 0x33434C52, // '3CLR'
FourColor = 0x34434C52, // '4CLR'
FiveColor = 0x35434C52, // '5CLR'
SixColor = 0x36434C52, // '6CLR'
SevenColor = 0x37434C52, // '7CLR'
EightColor = 0x38434C52, // '8CLR'
NineColor = 0x39434C52, // '9CLR'
TenColor = 0x41434C52, // 'ACLR'
ElevenColor = 0x42434C52, // 'BCLR'
TwelveColor = 0x43434C52, // 'CCLR'
ThirteenColor = 0x44434C52, // 'DCLR'
FourteenColor = 0x45434C52, // 'ECLR'
FifteenColor = 0x46434C52, // 'FCLR'
};
char const* color_space_name(ColorSpace);
class Profile : public RefCounted<Profile> {
public:
static ErrorOr<NonnullRefPtr<Profile>> try_load_from_externally_owned_memory(ReadonlyBytes bytes);
Version version() const { return m_version; }
DeviceClass device_class() const { return m_device_class; }
ColorSpace data_color_space() const { return m_data_color_space; }
time_t creation_timestamp() const { return m_creation_timestamp; }
private:
Version m_version;
DeviceClass m_device_class;
ColorSpace m_data_color_space;
time_t m_creation_timestamp;
};