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serenity/Userland/Libraries/LibGfx/ImageFormats/TIFFMetadata.h

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C++

/*
* Copyright (c) 2023, Lucas Chollet <lucas.chollet@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Variant.h>
#include <AK/Vector.h>
#include <LibGfx/Size.h>
namespace Gfx {
namespace TIFF {
enum class Type {
Byte = 1,
ASCII = 2,
UnsignedShort = 3,
UnsignedLong = 4,
UnsignedRational = 5,
Undefined = 7,
SignedLong = 9,
SignedRational = 10,
Float = 11,
Double = 12,
UTF8 = 129,
};
template<OneOf<u32, i32> x32>
struct Rational {
using Type = x32;
x32 numerator;
x32 denominator;
};
using Value = Variant<u8, String, u16, u32, Rational<u32>, i32, Rational<i32>>;
// This enum is progessively defined across sections but summarized in:
// Appendix A: TIFF Tags Sorted by Number
enum class Compression {
NoCompression = 1,
CCITT = 2,
Group3Fax = 3,
Group4Fax = 4,
LZW = 5,
JPEG = 6,
PackBits = 32773,
};
enum class Predictor {
None = 1,
HorizontalDifferencing = 2,
};
}
struct Metadata {
IntSize size {};
Array<u16, 3> bits_per_sample {};
TIFF::Compression compression {};
TIFF::Predictor predictor {};
Vector<u32> strip_offsets {};
u32 rows_per_strip {};
Vector<u32> strip_bytes_count {};
};
}