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528 lines
20 KiB
528 lines
20 KiB
// Copyright (c) Six Labors and contributors.
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// Licensed under the Apache License, Version 2.0.
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using SixLabors.ImageSharp.Metadata;
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using SixLabors.ImageSharp.Metadata.Profiles.Exif;
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using SixLabors.ImageSharp.PixelFormats;
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using SixLabors.ImageSharp.Primitives;
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using Xunit;
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namespace SixLabors.ImageSharp.Tests
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{
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public class ExifProfileTests
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{
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public enum TestImageWriteFormat
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{
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Jpeg,
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Png
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}
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private static readonly Dictionary<ExifTag, object> TestProfileValues = new Dictionary<ExifTag, object>
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{
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{ ExifTag.Software, "Software" },
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{ ExifTag.Copyright, "Copyright" },
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{ ExifTag.Orientation, (ushort)5 },
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{ ExifTag.ShutterSpeedValue, new SignedRational(75.55) },
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{ ExifTag.ImageDescription, "ImageDescription" },
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{ ExifTag.ExposureTime, new Rational(1.0 / 1600.0) },
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{ ExifTag.Model, "Model" },
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};
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[Theory]
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[InlineData(TestImageWriteFormat.Jpeg)]
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[InlineData(TestImageWriteFormat.Png)]
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public void Constructor(TestImageWriteFormat imageFormat)
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{
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Image<Rgba32> image = TestFile.Create(TestImages.Jpeg.Baseline.Calliphora).CreateRgba32Image();
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Assert.Null(image.Metadata.ExifProfile);
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const string expected = "Dirk Lemstra";
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image.Metadata.ExifProfile = new ExifProfile();
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image.Metadata.ExifProfile.SetValue(ExifTag.Copyright, expected);
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image = WriteAndRead(image, imageFormat);
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Assert.NotNull(image.Metadata.ExifProfile);
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Assert.Equal(1, image.Metadata.ExifProfile.Values.Count);
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IExifValue<string> value = image.Metadata.ExifProfile.GetValue(ExifTag.Copyright);
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Assert.NotNull(value);
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Assert.Equal(expected, value.Value);
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}
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[Fact]
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public void ConstructorEmpty()
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{
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new ExifProfile((byte[])null);
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new ExifProfile(new byte[] { });
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}
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[Fact]
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public void ConstructorCopy()
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{
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Assert.Throws<NullReferenceException>(() => ((ExifProfile)null).DeepClone());
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ExifProfile profile = GetExifProfile();
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ExifProfile clone = profile.DeepClone();
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TestProfile(clone);
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profile.SetValue(ExifTag.ColorSpace, (ushort)2);
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clone = profile.DeepClone();
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TestProfile(clone);
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}
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[Theory]
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[InlineData(TestImageWriteFormat.Jpeg)]
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[InlineData(TestImageWriteFormat.Png)]
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public void WriteFraction(TestImageWriteFormat imageFormat)
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{
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using (var memStream = new MemoryStream())
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{
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double exposureTime = 1.0 / 1600;
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ExifProfile profile = GetExifProfile();
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profile.SetValue(ExifTag.ExposureTime, new Rational(exposureTime));
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var image = new Image<Rgba32>(1, 1);
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image.Metadata.ExifProfile = profile;
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image = WriteAndRead(image, imageFormat);
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profile = image.Metadata.ExifProfile;
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Assert.NotNull(profile);
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IExifValue<Rational> value = profile.GetValue(ExifTag.ExposureTime);
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Assert.NotNull(value);
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Assert.NotEqual(exposureTime, value.Value.ToDouble());
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memStream.Position = 0;
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profile = GetExifProfile();
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profile.SetValue(ExifTag.ExposureTime, new Rational(exposureTime, true));
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image.Metadata.ExifProfile = profile;
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image = WriteAndRead(image, imageFormat);
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profile = image.Metadata.ExifProfile;
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Assert.NotNull(profile);
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value = profile.GetValue(ExifTag.ExposureTime);
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Assert.Equal(exposureTime, value.Value.ToDouble());
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image.Dispose();
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}
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}
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[Theory]
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[InlineData(TestImageWriteFormat.Jpeg)]
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[InlineData(TestImageWriteFormat.Png)]
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public void ReadWriteInfinity(TestImageWriteFormat imageFormat)
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{
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Image<Rgba32> image = TestFile.Create(TestImages.Jpeg.Baseline.Floorplan).CreateRgba32Image();
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image.Metadata.ExifProfile.SetValue(ExifTag.ExposureBiasValue, new SignedRational(double.PositiveInfinity));
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image = WriteAndReadJpeg(image);
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IExifValue<SignedRational> value = image.Metadata.ExifProfile.GetValue(ExifTag.ExposureBiasValue);
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Assert.NotNull(value);
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Assert.Equal(new SignedRational(double.PositiveInfinity), value.Value);
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image.Metadata.ExifProfile.SetValue(ExifTag.ExposureBiasValue, new SignedRational(double.NegativeInfinity));
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image = WriteAndRead(image, imageFormat);
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value = image.Metadata.ExifProfile.GetValue(ExifTag.ExposureBiasValue);
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Assert.NotNull(value);
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Assert.Equal(new SignedRational(double.NegativeInfinity), value.Value);
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image.Metadata.ExifProfile.SetValue(ExifTag.FlashEnergy, new Rational(double.NegativeInfinity));
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image = WriteAndRead(image, imageFormat);
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IExifValue<Rational> value2 = image.Metadata.ExifProfile.GetValue(ExifTag.FlashEnergy);
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Assert.NotNull(value);
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Assert.Equal(new Rational(double.PositiveInfinity), value2.Value);
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}
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//[Theory]
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//[InlineData(TestImageWriteFormat.Jpeg)]
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//[InlineData(TestImageWriteFormat.Png)]
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//public void SetValue(TestImageWriteFormat imageFormat)
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//{
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// var latitude = new Rational[] { new Rational(12.3), new Rational(4.56), new Rational(789.0) };
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// Image<Rgba32> image = TestFile.Create(TestImages.Jpeg.Baseline.Floorplan).CreateRgba32Image();
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// image.Metadata.ExifProfile.SetValue(ExifTag.Software, "ImageSharp");
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// IExifValue value = image.Metadata.ExifProfile.GetValue(ExifTag.Software);
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// TestValue(value, "ImageSharp");
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// Assert.Throws<ArgumentException>(() => { value.SetValue(15); });
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// image.Metadata.ExifProfile.SetValue(ExifTag.ShutterSpeedValue, new SignedRational(75.55));
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// value = image.Metadata.ExifProfile.GetValue(ExifTag.ShutterSpeedValue);
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// TestValue(value, new SignedRational(7555, 100));
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// Assert.Throws<ArgumentException>(() => { value.WithValue(75); });
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// image.Metadata.ExifProfile.SetValue(ExifTag.XResolution, new Rational(150.0));
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// // We also need to change this value because this overrides XResolution when the image is written.
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// image.Metadata.HorizontalResolution = 150.0;
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// value = image.Metadata.ExifProfile.GetValue(ExifTag.XResolution);
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// TestValue(value, new Rational(150, 1));
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// Assert.Throws<ArgumentException>(() => { value.WithValue("ImageSharp"); });
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// image.Metadata.ExifProfile.SetValue(ExifTag.ReferenceBlackWhite, null);
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// value = image.Metadata.ExifProfile.GetValue(ExifTag.ReferenceBlackWhite);
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// TestValue(value, (string)null);
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// image.Metadata.ExifProfile.SetValue(ExifTag.GPSLatitude, latitude);
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// value = image.Metadata.ExifProfile.GetValue(ExifTag.GPSLatitude);
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// TestValue(value, latitude);
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// image = WriteAndRead(image, imageFormat);
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// Assert.NotNull(image.Metadata.ExifProfile);
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// Assert.Equal(17, image.Metadata.ExifProfile.Values.Count());
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// value = image.Metadata.ExifProfile.GetValue(ExifTag.Software);
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// TestValue(value, "ImageSharp");
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// value = image.Metadata.ExifProfile.GetValue(ExifTag.ShutterSpeedValue);
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// TestValue(value, new SignedRational(75.55));
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// value = image.Metadata.ExifProfile.GetValue(ExifTag.XResolution);
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// TestValue(value, new Rational(150.0));
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// value = image.Metadata.ExifProfile.GetValue(ExifTag.ReferenceBlackWhite);
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// Assert.Null(value);
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// value = image.Metadata.ExifProfile.GetValue(ExifTag.GPSLatitude);
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// TestValue(value, latitude);
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// image.Metadata.ExifProfile.Parts = ExifParts.ExifTags;
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// image = WriteAndRead(image, imageFormat);
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// Assert.NotNull(image.Metadata.ExifProfile);
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// Assert.Equal(8, image.Metadata.ExifProfile.Values.Count());
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// Assert.NotNull(image.Metadata.ExifProfile.GetValue(ExifTag.ColorSpace));
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// Assert.True(image.Metadata.ExifProfile.RemoveValue(ExifTag.ColorSpace));
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// Assert.False(image.Metadata.ExifProfile.RemoveValue(ExifTag.ColorSpace));
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// Assert.Null(image.Metadata.ExifProfile.GetValue(ExifTag.ColorSpace));
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// Assert.Equal(7, image.Metadata.ExifProfile.Values.Count());
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//}
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[Fact]
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public void Syncs()
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{
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var exifProfile = new ExifProfile();
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exifProfile.SetValue(ExifTag.XResolution, new Rational(200));
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exifProfile.SetValue(ExifTag.YResolution, new Rational(300));
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var metaData = new ImageMetadata
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{
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ExifProfile = exifProfile,
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HorizontalResolution = 200,
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VerticalResolution = 300
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};
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metaData.HorizontalResolution = 100;
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Assert.Equal(200, metaData.ExifProfile.GetValue(ExifTag.XResolution).Value.ToDouble());
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Assert.Equal(300, metaData.ExifProfile.GetValue(ExifTag.YResolution).Value.ToDouble());
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exifProfile.Sync(metaData);
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Assert.Equal(100, (metaData.ExifProfile.GetValue(ExifTag.XResolution).Value).ToDouble());
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Assert.Equal(300, (metaData.ExifProfile.GetValue(ExifTag.YResolution).Value).ToDouble());
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metaData.VerticalResolution = 150;
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Assert.Equal(100, (metaData.ExifProfile.GetValue(ExifTag.XResolution).Value).ToDouble());
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Assert.Equal(300, (metaData.ExifProfile.GetValue(ExifTag.YResolution).Value).ToDouble());
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exifProfile.Sync(metaData);
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Assert.Equal(100, (metaData.ExifProfile.GetValue(ExifTag.XResolution).Value).ToDouble());
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Assert.Equal(150, (metaData.ExifProfile.GetValue(ExifTag.YResolution).Value).ToDouble());
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}
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[Fact]
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public void Values()
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{
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ExifProfile profile = GetExifProfile();
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TestProfile(profile);
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Image<Rgba32> thumbnail = profile.CreateThumbnail<Rgba32>();
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Assert.NotNull(thumbnail);
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Assert.Equal(256, thumbnail.Width);
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Assert.Equal(170, thumbnail.Height);
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}
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[Fact]
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public void ReadWriteLargeProfileJpg()
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{
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ExifTag<string>[] tags = new[] { ExifTag.Software, ExifTag.Copyright, ExifTag.Model, ExifTag.ImageDescription };
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foreach (ExifTag<string> tag in tags)
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{
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// Arrange
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var junk = new StringBuilder();
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for (int i = 0; i < 65600; i++)
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{
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junk.Append("a");
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}
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var image = new Image<Rgba32>(100, 100);
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ExifProfile expectedProfile = CreateExifProfile();
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var expectedProfileTags = expectedProfile.Values.Select(x => x.Tag).ToList();
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expectedProfile.SetValue(tag, junk.ToString());
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image.Metadata.ExifProfile = expectedProfile;
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// Act
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Image<Rgba32> reloadedImage = WriteAndRead(image, TestImageWriteFormat.Jpeg);
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// Assert
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ExifProfile actualProfile = reloadedImage.Metadata.ExifProfile;
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Assert.NotNull(actualProfile);
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foreach (ExifTag expectedProfileTag in expectedProfileTags)
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{
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IExifValue actualProfileValue = actualProfile.Values.First(x => x.Tag == expectedProfileTag);
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IExifValue expectedProfileValue = expectedProfile.Values.First(x => x.Tag == expectedProfileTag);
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Assert.Equal(expectedProfileValue.GetValue(), actualProfileValue.GetValue());
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}
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IExifValue<string> expected = expectedProfile.GetValue(tag);
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IExifValue<string> actual = actualProfile.GetValue(tag);
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Assert.Equal(expected, actual);
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}
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}
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[Fact]
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public void ExifTypeUndefined()
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{
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// This image contains an 802 byte EXIF profile
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// It has a tag with an index offset of 18,481,152 bytes (overrunning the data)
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Image<Rgba32> image = TestFile.Create(TestImages.Jpeg.Progressive.Bad.ExifUndefType).CreateRgba32Image();
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Assert.NotNull(image);
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ExifProfile profile = image.Metadata.ExifProfile;
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Assert.NotNull(profile);
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foreach (ExifValue value in profile.Values)
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{
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if (value.DataType == ExifDataType.Undefined)
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{
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Assert.True(value.IsArray);
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Assert.Equal(4U, 4 * ExifDataTypes.GetSize(value.DataType));
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}
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}
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}
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[Fact]
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public void TestArrayValueWithUnspecifiedSize()
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{
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// This images contains array in the exif profile that has zero components.
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Image<Rgba32> image = TestFile.Create(TestImages.Jpeg.Issues.InvalidCast520).CreateRgba32Image();
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ExifProfile profile = image.Metadata.ExifProfile;
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Assert.NotNull(profile);
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// Force parsing of the profile.
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Assert.Equal(25, profile.Values.Count);
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byte[] bytes = profile.ToByteArray();
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Assert.Equal(525, bytes.Length);
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}
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//[Theory]
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//[InlineData(TestImageWriteFormat.Jpeg)]
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//[InlineData(TestImageWriteFormat.Png)]
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//public void WritingImagePreservesExifProfile(TestImageWriteFormat imageFormat)
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//{
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// // arrange
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// var image = new Image<Rgba32>(1, 1);
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// ExifProfile expected = CreateExifProfile();
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// image.Metadata.ExifProfile = expected;
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// // act
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// Image<Rgba32> reloadedImage = WriteAndRead(image, imageFormat);
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// // assert
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// ExifProfile actual = reloadedImage.Metadata.ExifProfile;
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// Assert.NotNull(actual);
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// foreach (KeyValuePair<ExifTag, object> expectedProfileValue in TestProfileValues)
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// {
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// ExifValue actualProfileValue = actual.GetValue(expectedProfileValue.Key);
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// Assert.NotNull(actualProfileValue);
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// Assert.Equal(expectedProfileValue.Value, actualProfileValue.Value);
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// }
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//}
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//[Fact]
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//public void ProfileToByteArray()
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//{
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// // arrange
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// byte[] exifBytesWithoutExifCode = ExifConstants.LittleEndianByteOrderMarker;
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// ExifProfile expectedProfile = CreateExifProfile();
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// var expectedProfileTags = expectedProfile.Values.Select(x => x.Tag).ToList();
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// // act
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// byte[] actualBytes = expectedProfile.ToByteArray();
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// var actualProfile = new ExifProfile(actualBytes);
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// // assert
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// Assert.NotNull(actualBytes);
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// Assert.NotEmpty(actualBytes);
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// Assert.Equal(exifBytesWithoutExifCode, actualBytes.Take(exifBytesWithoutExifCode.Length).ToArray());
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// foreach (ExifTag expectedProfileTag in expectedProfileTags)
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// {
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// ExifValue actualProfileValue = actualProfile.GetValue(expectedProfileTag);
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// ExifValue expectedProfileValue = expectedProfile.GetValue(expectedProfileTag);
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// Assert.Equal(expectedProfileValue.Value, actualProfileValue.Value);
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// }
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//}
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private static ExifProfile CreateExifProfile()
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{
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var profile = new ExifProfile();
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foreach (KeyValuePair<ExifTag, object> exifProfileValue in TestProfileValues)
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{
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// Manky - Answers on a postcard for a nicer way to do this.
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MethodInfo method = typeof(ExifProfile)
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.GetMethod("SetValue")
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.MakeGenericMethod(new[] { exifProfileValue.Key.GetType().GenericTypeArguments[0] });
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method.Invoke(profile, new[] { exifProfileValue.Key, exifProfileValue.Value });
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}
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return profile;
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}
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internal static ExifProfile GetExifProfile()
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{
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Image<Rgba32> image = TestFile.Create(TestImages.Jpeg.Baseline.Floorplan).CreateRgba32Image();
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ExifProfile profile = image.Metadata.ExifProfile;
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Assert.NotNull(profile);
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return profile;
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}
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private static Image<Rgba32> WriteAndRead(Image<Rgba32> image, TestImageWriteFormat imageFormat)
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{
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return imageFormat switch
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{
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TestImageWriteFormat.Jpeg => WriteAndReadJpeg(image),
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TestImageWriteFormat.Png => WriteAndReadPng(image),
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_ => throw new ArgumentException("Unexpected test image format, only Jpeg and Png are allowed"),
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};
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}
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private static Image<Rgba32> WriteAndReadJpeg(Image<Rgba32> image)
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{
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using (var memStream = new MemoryStream())
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{
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image.SaveAsJpeg(memStream);
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image.Dispose();
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memStream.Position = 0;
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return Image.Load<Rgba32>(memStream);
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}
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}
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private static Image<Rgba32> WriteAndReadPng(Image<Rgba32> image)
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{
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using (var memStream = new MemoryStream())
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{
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image.SaveAsPng(memStream);
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image.Dispose();
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memStream.Position = 0;
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return Image.Load<Rgba32>(memStream);
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}
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}
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private static void TestProfile(ExifProfile profile)
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{
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Assert.NotNull(profile);
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Assert.Equal(16, profile.Values.Count);
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foreach (IExifValue value in profile.Values)
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{
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Assert.NotNull(value.GetValue());
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}
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IExifValue<string> software = profile.GetValue(ExifTag.Software);
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Assert.Equal("Windows Photo Editor 10.0.10011.16384", software.Value);
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IExifValue<Rational> xResolution = profile.GetValue(ExifTag.XResolution);
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Assert.Equal(new Rational(300.0), xResolution.Value);
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IExifValue<Number> xDimension = profile.GetValue(ExifTag.PixelXDimension);
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Assert.Equal(2338U, xDimension.Value);
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}
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private static void TestValue(IExifValue value, string expected)
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{
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Assert.NotNull(value);
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Assert.Equal(expected, value.GetValue());
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}
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private static void TestValue(IExifValue value, Rational expected)
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{
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Assert.NotNull(value);
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Assert.Equal(expected, value.GetValue());
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|
}
|
|
|
|
private static void TestValue(IExifValue value, SignedRational expected)
|
|
{
|
|
Assert.NotNull(value);
|
|
Assert.Equal(expected, value.GetValue());
|
|
}
|
|
|
|
private static void TestValue(IExifValue value, Rational[] expected)
|
|
{
|
|
Assert.NotNull(value);
|
|
|
|
Assert.Equal(expected, (ICollection)value.GetValue());
|
|
}
|
|
|
|
private static void TestValue(ExifValue value, double expected)
|
|
{
|
|
Assert.NotNull(value);
|
|
Assert.Equal(expected, value.GetValue());
|
|
}
|
|
|
|
private static void TestValue(ExifValue value, double[] expected)
|
|
{
|
|
Assert.NotNull(value);
|
|
|
|
Assert.Equal(expected, (ICollection)value.GetValue());
|
|
}
|
|
}
|
|
}
|
|
|