mirror of https://github.com/SixLabors/ImageSharp
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
3.4 KiB
73 lines
3.4 KiB
// Copyright (c) Six Labors.
|
|
// Licensed under the Six Labors Split License.
|
|
|
|
using SixLabors.ImageSharp.Formats.Tiff.Utils;
|
|
using SixLabors.ImageSharp.PixelFormats;
|
|
|
|
namespace SixLabors.ImageSharp.Tests.Formats.Tiff.Utils;
|
|
|
|
[Trait("Format", "Tiff")]
|
|
public class TiffUtilitiesTest
|
|
{
|
|
[Theory]
|
|
[InlineData(0, 0, 0, 0)]
|
|
[InlineData(42, 84, 128, 0)]
|
|
[InlineData(65535, 65535, 65535, 0)]
|
|
public void ColorFromRgba64Premultiplied_WithZeroAlpha_ReturnsDefaultPixel(ushort r, ushort g, ushort b, ushort a)
|
|
{
|
|
Rgba64 actual = TiffUtilities.ColorFromRgba64Premultiplied<Rgba64>(r, g, b, a);
|
|
|
|
Assert.Equal(default, actual);
|
|
}
|
|
|
|
[Fact]
|
|
public void ColorScaleTo24BitPremultiplied_WithZeroAlpha_ReturnsDefaultPixel()
|
|
{
|
|
Rgba64 unassociated = TiffUtilities.ColorScaleTo24BitPremultiplied<Rgba64>(0x123456, 0x654321, 0xABCDEF, 0);
|
|
Rgba32P associated = TiffUtilities.ColorScaleTo24BitPremultiplied<Rgba32P>(0x123456, 0x654321, 0xABCDEF, 0);
|
|
|
|
Assert.Equal(default, unassociated);
|
|
Assert.Equal(default, associated);
|
|
}
|
|
|
|
[Fact]
|
|
public void ColorScaleTo32BitPremultiplied_WithZeroAlpha_ReturnsDefaultPixel()
|
|
{
|
|
Rgba64 unassociated = TiffUtilities.ColorScaleTo32BitPremultiplied<Rgba64>(0x12345678, 0x654321AB, 0xABCDEF12, 0);
|
|
Rgba32P associated = TiffUtilities.ColorScaleTo32BitPremultiplied<Rgba32P>(0x12345678, 0x654321AB, 0xABCDEF12, 0);
|
|
|
|
Assert.Equal(default, unassociated);
|
|
Assert.Equal(default, associated);
|
|
}
|
|
|
|
[Theory]
|
|
[InlineData(65535, 65535, 65535, 65535, 65535, 65535, 65535, 65535)]
|
|
[InlineData(32767, 0, 0, 65535, 32767, 0, 0, 65535)]
|
|
[InlineData(0, 32767, 0, 65535, 0, 32767, 0, 65535)]
|
|
[InlineData(0, 0, 32767, 65535, 0, 0, 32767, 65535)]
|
|
public void ColorFromRgba64Premultiplied_WithNoAlpha_ReturnExpectedValues(ushort r, ushort g, ushort b, ushort a, ushort expectedR, ushort expectedG, ushort expectedB, ushort expectedA)
|
|
{
|
|
Rgba64 actual = TiffUtilities.ColorFromRgba64Premultiplied<Rgba64>(r, g, b, a);
|
|
|
|
Assert.Equal(new Rgba64(expectedR, expectedG, expectedB, expectedA), actual);
|
|
}
|
|
|
|
[Theory]
|
|
[InlineData(32766, 0, 0, 32766, 65535, 0, 0, 32766)] // Red, 50% Alpha
|
|
[InlineData(0, 32766, 0, 32766, 0, 65535, 0, 32766)] // Green, 50% Alpha
|
|
[InlineData(0, 0, 32766, 32766, 0, 0, 65535, 32766)] // Blue, 50% Alpha
|
|
/* The exact 25% result lies below the 16-bit midpoint by less than one float ULP. The Vector4 conversion therefore
|
|
reaches the midpoint and applies the established round-to-even contract without requiring a comparison tolerance. */
|
|
[InlineData(8191, 0, 0, 16383, 32766, 0, 0, 16383)] // Red, 25% Alpha
|
|
[InlineData(0, 8191, 0, 16383, 0, 32766, 0, 16383)] // Green, 25% Alpha
|
|
[InlineData(0, 0, 8191, 16383, 0, 0, 32766, 16383)] // Blue, 25% Alpha
|
|
[InlineData(8191, 0, 0, 0, 0, 0, 0, 0)] // Red, 0% Alpha
|
|
[InlineData(0, 8191, 0, 0, 0, 0, 0, 0)] // Green, 0% Alpha
|
|
[InlineData(0, 0, 8191, 0, 0, 0, 0, 0)] // Blue, 0% Alpha
|
|
public void ColorFromRgba64Premultiplied_WithAlpha_ReturnExpectedValues(ushort r, ushort g, ushort b, ushort a, ushort expectedR, ushort expectedG, ushort expectedB, ushort expectedA)
|
|
{
|
|
Rgba64 actual = TiffUtilities.ColorFromRgba64Premultiplied<Rgba64>(r, g, b, a);
|
|
|
|
Assert.Equal(new Rgba64(expectedR, expectedG, expectedB, expectedA), actual);
|
|
}
|
|
}
|
|
|