diff --git a/src/ImageSharp/Common/Helpers/ImageMaths.cs b/src/ImageSharp/Common/Helpers/ImageMaths.cs index c51a54a40..122952cae 100644 --- a/src/ImageSharp/Common/Helpers/ImageMaths.cs +++ b/src/ImageSharp/Common/Helpers/ImageMaths.cs @@ -38,7 +38,7 @@ namespace SixLabors.ImageSharp /// The . [MethodImpl(InliningOptions.ShortMethod)] public static byte Get8BitBT709Luminance(byte r, byte g, byte b) => - (byte)((r * .2126F) + (g * .7152F) + (b * .0722F) + 0.5f); + (byte)((r * .2126F) + (g * .7152F) + (b * .0722F) + 0.5F); /// /// Gets the luminance from the rgb components using the formula as specified by ITU-R Recommendation BT.709. @@ -49,7 +49,7 @@ namespace SixLabors.ImageSharp /// The . [MethodImpl(InliningOptions.ShortMethod)] public static ushort Get16BitBT709Luminance(ushort r, ushort g, ushort b) => - (ushort)((r * .2126F) + (g * .7152F) + (b * .0722F)); + (ushort)((r * .2126F) + (g * .7152F) + (b * .0722F) + 0.5F); /// /// Gets the luminance from the rgb components using the formula as specified by ITU-R Recommendation BT.709. @@ -60,7 +60,7 @@ namespace SixLabors.ImageSharp /// The . [MethodImpl(InliningOptions.ShortMethod)] public static ushort Get16BitBT709Luminance(float r, float g, float b) => - (ushort)((r * .2126F) + (g * .7152F) + (b * .0722F)); + (ushort)((r * .2126F) + (g * .7152F) + (b * .0722F) + 0.5F); /// /// Scales a value from a 16 bit to it's 8 bit equivalent. diff --git a/src/ImageSharp/PixelFormats/PixelImplementations/La32.cs b/src/ImageSharp/PixelFormats/PixelImplementations/La32.cs index 035d23854..b13c43827 100644 --- a/src/ImageSharp/PixelFormats/PixelImplementations/La32.cs +++ b/src/ImageSharp/PixelFormats/PixelImplementations/La32.cs @@ -1,6 +1,7 @@ // Copyright (c) Six Labors and contributors. // Licensed under the Apache License, Version 2.0. +using System; using System.Numerics; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; @@ -236,7 +237,7 @@ namespace SixLabors.ImageSharp.PixelFormats vector.Y, vector.Z); - this.A = (ushort)vector.W; + this.A = (ushort)MathF.Round(vector.W); } } } diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray16OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.L16OperationsTests.cs similarity index 100% rename from tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray16OperationsTests.cs rename to tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.L16OperationsTests.cs diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray8OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.L8OperationsTests.cs similarity index 100% rename from tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.Gray8OperationsTests.cs rename to tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.L8OperationsTests.cs diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.La16OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.La16OperationsTests.cs new file mode 100644 index 000000000..f03aa5587 --- /dev/null +++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.La16OperationsTests.cs @@ -0,0 +1,25 @@ +// Copyright (c) Six Labors and contributors. +// Licensed under the Apache License, Version 2.0. + +using SixLabors.ImageSharp.PixelFormats; + +using Xunit; +using Xunit.Abstractions; + +namespace SixLabors.ImageSharp.Tests.PixelFormats.PixelOperations +{ + public partial class PixelOperationsTests + { + public class La16OperationsTests : PixelOperationsTests + { + public La16OperationsTests(ITestOutputHelper output) + : base(output) + { + } + + [Fact] + public void IsSpecialImplementation() => Assert.IsType(PixelOperations.Instance); + + } + } +} diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.La32OperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.La32OperationsTests.cs new file mode 100644 index 000000000..2112a2fea --- /dev/null +++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.La32OperationsTests.cs @@ -0,0 +1,25 @@ +// Copyright (c) Six Labors and contributors. +// Licensed under the Apache License, Version 2.0. + +using SixLabors.ImageSharp.PixelFormats; + +using Xunit; +using Xunit.Abstractions; + +namespace SixLabors.ImageSharp.Tests.PixelFormats.PixelOperations +{ + public partial class PixelOperationsTests + { + public class La32OperationsTests : PixelOperationsTests + { + public La32OperationsTests(ITestOutputHelper output) + : base(output) + { + } + + [Fact] + public void IsSpecialImplementation() => Assert.IsType(PixelOperations.Instance); + + } + } +} diff --git a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.cs b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.cs index 0f5b5838e..ef2531060 100644 --- a/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.cs +++ b/tests/ImageSharp.Tests/PixelFormats/PixelOperations/PixelOperationsTests.cs @@ -617,6 +617,188 @@ namespace SixLabors.ImageSharp.Tests.PixelFormats.PixelOperations ); } + [Theory] + [MemberData(nameof(ArraySizesData))] + public void FromL8(int count) + { + byte[] sourceBytes = CreateByteTestData(count); + L8[] source = sourceBytes.Select(b => new L8(b)).ToArray(); + var expected = new TPixel[count]; + + + for (int i = 0; i < count; i++) + { + expected[i].FromL8(source[i]); + } + + TestOperation( + source, + expected, + (s, d) => Operations.FromL8(this.Configuration, s, d.GetSpan()) + ); + } + + [Theory] + [MemberData(nameof(ArraySizesData))] + public void ToL8(int count) + { + TPixel[] source = CreatePixelTestData(count); + var expected = new L8[count]; + + for (int i = 0; i < count; i++) + { + expected[i].FromScaledVector4(source[i].ToScaledVector4()); + } + + TestOperation( + source, + expected, + (s, d) => Operations.ToL8(this.Configuration, s, d.GetSpan()) + ); + } + + [Theory] + [MemberData(nameof(ArraySizesData))] + public void FromL16(int count) + { + L16[] source = CreateVector4TestData(count).Select(v => + { + L16 g = default; + g.FromVector4(v); + return g; + }).ToArray(); + + var expected = new TPixel[count]; + + for (int i = 0; i < count; i++) + { + expected[i].FromL16(source[i]); + } + + TestOperation( + source, + expected, + (s, d) => Operations.FromL16(this.Configuration, s, d.GetSpan()) + ); + } + + [Theory] + [MemberData(nameof(ArraySizesData))] + public void ToL16(int count) + { + TPixel[] source = CreatePixelTestData(count); + var expected = new L16[count]; + + for (int i = 0; i < count; i++) + { + expected[i].FromScaledVector4(source[i].ToScaledVector4()); + } + + TestOperation( + source, + expected, + (s, d) => Operations.ToL16(this.Configuration, s, d.GetSpan()) + ); + } + + [Theory] + [MemberData(nameof(ArraySizesData))] + public void FromLa16Bytes(int count) + { + int size = Unsafe.SizeOf(); + byte[] source = CreateByteTestData(count * size); + var expected = new TPixel[count]; + + for (int i = 0; i < count; i++) + { + int offset = i * size; + + La16 la = MemoryMarshal.Cast(source.AsSpan().Slice(offset, size))[0]; + expected[i].FromLa16(la); + } + + TestOperation( + source, + expected, + (s, d) => Operations.FromLa16Bytes(this.Configuration, s, d.GetSpan(), count) + ); + } + + [Theory] + [MemberData(nameof(ArraySizesData))] + public void ToLa16Bytes(int count) + { + int size = Unsafe.SizeOf(); + TPixel[] source = CreatePixelTestData(count); + var expected = new byte[count * size]; + La16 la = default; + + for (int i = 0; i < count; i++) + { + int offset = i * size; + la.FromScaledVector4(source[i].ToScaledVector4()); + OctetBytes bytes = Unsafe.As(ref la); + expected[offset] = bytes[0]; + expected[offset + 1] = bytes[1]; + } + + TestOperation( + source, + expected, + (s, d) => Operations.ToLa16Bytes(this.Configuration, s, d.GetSpan(), count) + ); + } + + [Theory] + [MemberData(nameof(ArraySizesData))] + public void FromLa32Bytes(int count) + { + int size = Unsafe.SizeOf(); + byte[] source = CreateByteTestData(count * size); + var expected = new TPixel[count]; + + for (int i = 0; i < count; i++) + { + int offset = i * size; + + La32 la = MemoryMarshal.Cast(source.AsSpan().Slice(offset, size))[0]; + expected[i].FromLa32(la); + } + + TestOperation( + source, + expected, + (s, d) => Operations.FromLa32Bytes(this.Configuration, s, d.GetSpan(), count) + ); + } + + [Theory] + [MemberData(nameof(ArraySizesData))] + public void ToLa32Bytes(int count) + { + var size = Unsafe.SizeOf(); + TPixel[] source = CreatePixelTestData(count); + var expected = new byte[count * size]; + La32 la = default; + + for (int i = 0; i < count; i++) + { + int offset = i * size; + la.FromScaledVector4(source[i].ToScaledVector4()); + OctetBytes bytes = Unsafe.As(ref la); + expected[offset] = bytes[0]; + expected[offset + 1] = bytes[1]; + expected[offset + 2] = bytes[2]; + expected[offset + 3] = bytes[3]; + } + + TestOperation( + source, + expected, + (s, d) => Operations.ToLa32Bytes(this.Configuration, s, d.GetSpan(), count) + ); + } + [Theory] [MemberData(nameof(ArraySizesData))] public void FromRgb24Bytes(int count) @@ -808,91 +990,6 @@ namespace SixLabors.ImageSharp.Tests.PixelFormats.PixelOperations ); } - - [Theory] - [MemberData(nameof(ArraySizesData))] - public void FromL8(int count) - { - byte[] sourceBytes = CreateByteTestData(count); - L8[] source = sourceBytes.Select(b => new L8(b)).ToArray(); - var expected = new TPixel[count]; - - - for (int i = 0; i < count; i++) - { - expected[i].FromL8(source[i]); - } - - TestOperation( - source, - expected, - (s, d) => Operations.FromL8(this.Configuration, s, d.GetSpan()) - ); - } - - [Theory] - [MemberData(nameof(ArraySizesData))] - public void ToL8(int count) - { - TPixel[] source = CreatePixelTestData(count); - var expected = new L8[count]; - - for (int i = 0; i < count; i++) - { - expected[i].FromScaledVector4(source[i].ToScaledVector4()); - } - - TestOperation( - source, - expected, - (s, d) => Operations.ToL8(this.Configuration, s, d.GetSpan()) - ); - } - - [Theory] - [MemberData(nameof(ArraySizesData))] - public void FromL16(int count) - { - L16[] source = CreateVector4TestData(count).Select(v => - { - L16 g = default; - g.FromVector4(v); - return g; - }).ToArray(); - - var expected = new TPixel[count]; - - for (int i = 0; i < count; i++) - { - expected[i].FromL16(source[i]); - } - - TestOperation( - source, - expected, - (s, d) => Operations.FromL16(this.Configuration, s, d.GetSpan()) - ); - } - - [Theory] - [MemberData(nameof(ArraySizesData))] - public void ToL16(int count) - { - TPixel[] source = CreatePixelTestData(count); - var expected = new L16[count]; - - for (int i = 0; i < count; i++) - { - expected[i].FromScaledVector4(source[i].ToScaledVector4()); - } - - TestOperation( - source, - expected, - (s, d) => Operations.ToL16(this.Configuration, s, d.GetSpan()) - ); - } - public delegate void RefAction(ref T1 arg1); internal static Vector4[] CreateExpectedVector4Data(TPixel[] source, RefAction vectorModifier = null) @@ -1064,18 +1161,6 @@ namespace SixLabors.ImageSharp.Tests.PixelFormats.PixelOperations // ReSharper restore PossibleNullReferenceException } } - else if (typeof(TDest) == typeof(L16)) - { - // Minor difference is tolerated for 16 bit pixel values - Span expected = MemoryMarshal.Cast(this.ExpectedDestBuffer.AsSpan()); - Span actual = MemoryMarshal.Cast(this.ActualDestBuffer.GetSpan()); - - for (int i = 0; i < count; i++) - { - int difference = expected[i].PackedValue - actual[i].PackedValue; - Assert.True(Math.Abs(difference) < 2); - } - } else { Span expected = this.ExpectedDestBuffer.AsSpan();