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300 lines
15 KiB
300 lines
15 KiB
// Copyright (c) Six Labors.
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// Licensed under the Apache License, Version 2.0.
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using System.IO;
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using System.Linq;
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using SixLabors.ImageSharp.Common.Helpers;
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using SixLabors.ImageSharp.Formats.Tiff;
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using SixLabors.ImageSharp.Formats.Tiff.Constants;
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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.Metadata.Profiles.Iptc;
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using SixLabors.ImageSharp.PixelFormats;
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using Xunit;
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using static SixLabors.ImageSharp.Tests.TestImages.Tiff;
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namespace SixLabors.ImageSharp.Tests.Formats.Tiff
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{
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[Trait("Format", "Tiff")]
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public class TiffMetadataTests
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{
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private static TiffDecoder TiffDecoder => new TiffDecoder();
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[Fact]
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public void TiffMetadata_CloneIsDeep()
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{
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var meta = new TiffMetadata
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{
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ByteOrder = ByteOrder.BigEndian,
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};
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var clone = (TiffMetadata)meta.DeepClone();
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clone.ByteOrder = ByteOrder.LittleEndian;
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Assert.False(meta.ByteOrder == clone.ByteOrder);
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}
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[Theory]
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[WithFile(SampleMetadata, PixelTypes.Rgba32)]
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public void TiffFrameMetadata_CloneIsDeep<TPixel>(TestImageProvider<TPixel> provider)
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where TPixel : unmanaged, IPixel<TPixel>
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{
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using (Image<TPixel> image = provider.GetImage(TiffDecoder))
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{
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TiffFrameMetadata meta = image.Frames.RootFrame.Metadata.GetTiffMetadata();
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var cloneSameAsSampleMetaData = (TiffFrameMetadata)meta.DeepClone();
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VerifyExpectedTiffFrameMetaDataIsPresent(cloneSameAsSampleMetaData);
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var clone = (TiffFrameMetadata)meta.DeepClone();
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clone.BitsPerPixel = TiffBitsPerPixel.Bit8;
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clone.Compression = TiffCompression.None;
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clone.PhotometricInterpretation = TiffPhotometricInterpretation.CieLab;
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clone.Predictor = TiffPredictor.Horizontal;
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Assert.False(meta.BitsPerPixel == clone.BitsPerPixel);
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Assert.False(meta.Compression == clone.Compression);
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Assert.False(meta.PhotometricInterpretation == clone.PhotometricInterpretation);
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Assert.False(meta.Predictor == clone.Predictor);
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}
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}
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private static void VerifyExpectedTiffFrameMetaDataIsPresent(TiffFrameMetadata frameMetaData)
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{
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Assert.NotNull(frameMetaData);
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Assert.NotNull(frameMetaData.BitsPerPixel);
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Assert.Equal(TiffBitsPerSample.Bit4, (TiffBitsPerSample)frameMetaData.BitsPerPixel);
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Assert.Equal(TiffCompression.Lzw, frameMetaData.Compression);
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Assert.Equal(TiffPhotometricInterpretation.PaletteColor, frameMetaData.PhotometricInterpretation);
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Assert.Equal(TiffPredictor.None, frameMetaData.Predictor);
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}
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[Theory]
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[InlineData(Calliphora_BiColorUncompressed, 1)]
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[InlineData(GrayscaleUncompressed, 8)]
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[InlineData(RgbUncompressed, 24)]
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public void Identify_DetectsCorrectBitPerPixel(string imagePath, int expectedBitsPerPixel)
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{
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var testFile = TestFile.Create(imagePath);
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using var stream = new MemoryStream(testFile.Bytes, false);
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IImageInfo imageInfo = Image.Identify(stream);
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Assert.NotNull(imageInfo);
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TiffMetadata tiffMetadata = imageInfo.Metadata.GetTiffMetadata();
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Assert.NotNull(tiffMetadata);
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Assert.Equal(expectedBitsPerPixel, imageInfo.PixelType.BitsPerPixel);
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}
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[Theory]
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[InlineData(GrayscaleUncompressed, ByteOrder.BigEndian)]
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[InlineData(LittleEndianByteOrder, ByteOrder.LittleEndian)]
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public void Identify_DetectsCorrectByteOrder(string imagePath, ByteOrder expectedByteOrder)
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{
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var testFile = TestFile.Create(imagePath);
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using var stream = new MemoryStream(testFile.Bytes, false);
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IImageInfo imageInfo = Image.Identify(stream);
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Assert.NotNull(imageInfo);
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TiffMetadata tiffMetadata = imageInfo.Metadata.GetTiffMetadata();
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Assert.NotNull(tiffMetadata);
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Assert.Equal(expectedByteOrder, tiffMetadata.ByteOrder);
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}
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[Theory]
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[WithFile(SampleMetadata, PixelTypes.Rgba32, false)]
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[WithFile(SampleMetadata, PixelTypes.Rgba32, true)]
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public void MetadataProfiles<TPixel>(TestImageProvider<TPixel> provider, bool ignoreMetadata)
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where TPixel : unmanaged, IPixel<TPixel>
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{
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using (Image<TPixel> image = provider.GetImage(new TiffDecoder() { IgnoreMetadata = ignoreMetadata }))
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{
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TiffMetadata meta = image.Metadata.GetTiffMetadata();
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ImageFrameMetadata rootFrameMetaData = image.Frames.RootFrame.Metadata;
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Assert.NotNull(meta);
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if (ignoreMetadata)
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{
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Assert.Null(rootFrameMetaData.XmpProfile);
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Assert.Null(rootFrameMetaData.ExifProfile);
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}
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else
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{
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Assert.NotNull(rootFrameMetaData.XmpProfile);
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Assert.NotNull(rootFrameMetaData.ExifProfile);
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Assert.Equal(2599, rootFrameMetaData.XmpProfile.Length);
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Assert.Equal(26, rootFrameMetaData.ExifProfile.Values.Count);
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}
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}
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}
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[Theory]
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[WithFile(InvalidIptcData, PixelTypes.Rgba32)]
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public void CanDecodeImage_WithIptcDataAsLong<TPixel>(TestImageProvider<TPixel> provider)
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where TPixel : unmanaged, IPixel<TPixel>
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{
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using Image<TPixel> image = provider.GetImage(TiffDecoder);
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IptcProfile iptcProfile = image.Frames.RootFrame.Metadata.IptcProfile;
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Assert.NotNull(iptcProfile);
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IptcValue byline = iptcProfile.Values.FirstOrDefault(data => data.Tag == IptcTag.Byline);
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Assert.NotNull(byline);
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Assert.Equal("Studio Mantyniemi", byline.Value);
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}
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[Theory]
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[WithFile(SampleMetadata, PixelTypes.Rgba32)]
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public void BaselineTags<TPixel>(TestImageProvider<TPixel> provider)
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where TPixel : unmanaged, IPixel<TPixel>
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{
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using (Image<TPixel> image = provider.GetImage(TiffDecoder))
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{
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ImageFrame<TPixel> rootFrame = image.Frames.RootFrame;
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Assert.Equal(32, rootFrame.Width);
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Assert.Equal(32, rootFrame.Height);
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Assert.NotNull(rootFrame.Metadata.XmpProfile);
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Assert.Equal(2599, rootFrame.Metadata.XmpProfile.Length);
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ExifProfile exifProfile = rootFrame.Metadata.ExifProfile;
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TiffFrameMetadata tiffFrameMetadata = rootFrame.Metadata.GetTiffMetadata();
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Assert.NotNull(exifProfile);
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// The original exifProfile has 30 values, but 4 of those values will be stored in the TiffFrameMetaData
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// and removed from the profile on decode.
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Assert.Equal(26, exifProfile.Values.Count);
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Assert.Equal(TiffBitsPerPixel.Bit4, tiffFrameMetadata.BitsPerPixel);
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Assert.Equal(TiffCompression.Lzw, tiffFrameMetadata.Compression);
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Assert.Equal("This is Название", exifProfile.GetValue(ExifTag.ImageDescription).Value);
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Assert.Equal("This is Изготовитель камеры", exifProfile.GetValue(ExifTag.Make).Value);
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Assert.Equal("This is Модель камеры", exifProfile.GetValue(ExifTag.Model).Value);
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Assert.Equal("IrfanView", exifProfile.GetValue(ExifTag.Software).Value);
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Assert.Null(exifProfile.GetValue(ExifTag.DateTime)?.Value);
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Assert.Equal("This is author1;Author2", exifProfile.GetValue(ExifTag.Artist).Value);
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Assert.Null(exifProfile.GetValue(ExifTag.HostComputer)?.Value);
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Assert.Equal("This is Авторские права", exifProfile.GetValue(ExifTag.Copyright).Value);
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Assert.Equal(4, exifProfile.GetValue(ExifTag.Rating).Value);
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Assert.Equal(75, exifProfile.GetValue(ExifTag.RatingPercent).Value);
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var expectedResolution = new Rational(10000, 1000, simplify: false);
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Assert.Equal(expectedResolution, exifProfile.GetValue(ExifTag.XResolution).Value);
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Assert.Equal(expectedResolution, exifProfile.GetValue(ExifTag.YResolution).Value);
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Assert.Equal(new Number[] { 8u }, exifProfile.GetValue(ExifTag.StripOffsets)?.Value, new NumberComparer());
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Assert.Equal(new Number[] { 297u }, exifProfile.GetValue(ExifTag.StripByteCounts)?.Value, new NumberComparer());
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Assert.Null(exifProfile.GetValue(ExifTag.ExtraSamples)?.Value);
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Assert.Equal(32u, exifProfile.GetValue(ExifTag.RowsPerStrip).Value);
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Assert.Null(exifProfile.GetValue(ExifTag.SampleFormat));
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Assert.Equal(TiffPredictor.None, tiffFrameMetadata.Predictor);
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Assert.Equal(PixelResolutionUnit.PixelsPerInch, UnitConverter.ExifProfileToResolutionUnit(exifProfile));
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ushort[] colorMap = exifProfile.GetValue(ExifTag.ColorMap)?.Value;
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Assert.NotNull(colorMap);
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Assert.Equal(48, colorMap.Length);
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Assert.Equal(10537, colorMap[0]);
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Assert.Equal(14392, colorMap[1]);
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Assert.Equal(58596, colorMap[46]);
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Assert.Equal(3855, colorMap[47]);
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Assert.Equal(TiffPhotometricInterpretation.PaletteColor, tiffFrameMetadata.PhotometricInterpretation);
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Assert.Equal(1u, exifProfile.GetValue(ExifTag.SamplesPerPixel).Value);
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ImageMetadata imageMetaData = image.Metadata;
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Assert.NotNull(imageMetaData);
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Assert.Equal(PixelResolutionUnit.PixelsPerInch, imageMetaData.ResolutionUnits);
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Assert.Equal(10, imageMetaData.HorizontalResolution);
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Assert.Equal(10, imageMetaData.VerticalResolution);
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TiffMetadata tiffMetaData = image.Metadata.GetTiffMetadata();
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Assert.NotNull(tiffMetaData);
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Assert.Equal(ByteOrder.LittleEndian, tiffMetaData.ByteOrder);
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}
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}
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[Theory]
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[WithFile(MultiframeDeflateWithPreview, PixelTypes.Rgba32)]
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public void SubfileType<TPixel>(TestImageProvider<TPixel> provider)
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where TPixel : unmanaged, IPixel<TPixel>
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{
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using (Image<TPixel> image = provider.GetImage(TiffDecoder))
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{
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TiffMetadata meta = image.Metadata.GetTiffMetadata();
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Assert.NotNull(meta);
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Assert.Equal(2, image.Frames.Count);
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ExifProfile frame0Exif = image.Frames[0].Metadata.ExifProfile;
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Assert.Equal(TiffNewSubfileType.FullImage, (TiffNewSubfileType)frame0Exif.GetValue(ExifTag.SubfileType).Value);
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Assert.Equal(255, image.Frames[0].Width);
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Assert.Equal(255, image.Frames[0].Height);
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ExifProfile frame1Exif = image.Frames[1].Metadata.ExifProfile;
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Assert.Equal(TiffNewSubfileType.Preview, (TiffNewSubfileType)frame1Exif.GetValue(ExifTag.SubfileType).Value);
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Assert.Equal(255, image.Frames[1].Width);
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Assert.Equal(255, image.Frames[1].Height);
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}
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}
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[Theory]
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[WithFile(SampleMetadata, PixelTypes.Rgba32)]
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public void Encode_PreservesMetadata<TPixel>(TestImageProvider<TPixel> provider)
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where TPixel : unmanaged, IPixel<TPixel>
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{
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// Load Tiff image
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using Image<TPixel> image = provider.GetImage(new TiffDecoder() { IgnoreMetadata = false });
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ImageMetadata inputMetaData = image.Metadata;
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ImageFrame<TPixel> rootFrameInput = image.Frames.RootFrame;
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TiffFrameMetadata frameMetaInput = rootFrameInput.Metadata.GetTiffMetadata();
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byte[] xmpProfileInput = rootFrameInput.Metadata.XmpProfile;
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ExifProfile exifProfileInput = rootFrameInput.Metadata.ExifProfile;
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Assert.Equal(TiffCompression.Lzw, frameMetaInput.Compression);
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Assert.Equal(TiffBitsPerPixel.Bit4, frameMetaInput.BitsPerPixel);
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// Save to Tiff
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var tiffEncoder = new TiffEncoder() { PhotometricInterpretation = TiffPhotometricInterpretation.Rgb };
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using var ms = new MemoryStream();
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image.Save(ms, tiffEncoder);
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// Assert
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ms.Position = 0;
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using var encodedImage = Image.Load<Rgba32>(ms);
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ImageMetadata encodedImageMetaData = encodedImage.Metadata;
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ImageFrame<Rgba32> rootFrameEncodedImage = encodedImage.Frames.RootFrame;
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TiffFrameMetadata tiffMetaDataEncodedRootFrame = rootFrameEncodedImage.Metadata.GetTiffMetadata();
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ExifProfile encodedImageExifProfile = rootFrameEncodedImage.Metadata.ExifProfile;
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byte[] encodedImageXmpProfile = rootFrameEncodedImage.Metadata.XmpProfile;
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Assert.Equal(TiffBitsPerPixel.Bit4, tiffMetaDataEncodedRootFrame.BitsPerPixel);
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Assert.Equal(TiffCompression.Lzw, tiffMetaDataEncodedRootFrame.Compression);
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Assert.Equal(inputMetaData.HorizontalResolution, encodedImageMetaData.HorizontalResolution);
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Assert.Equal(inputMetaData.VerticalResolution, encodedImageMetaData.VerticalResolution);
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Assert.Equal(inputMetaData.ResolutionUnits, encodedImageMetaData.ResolutionUnits);
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Assert.Equal(rootFrameInput.Width, rootFrameEncodedImage.Width);
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Assert.Equal(rootFrameInput.Height, rootFrameEncodedImage.Height);
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PixelResolutionUnit resolutionUnitInput = UnitConverter.ExifProfileToResolutionUnit(exifProfileInput);
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PixelResolutionUnit resolutionUnitEncoded = UnitConverter.ExifProfileToResolutionUnit(encodedImageExifProfile);
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Assert.Equal(resolutionUnitInput, resolutionUnitEncoded);
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Assert.Equal(exifProfileInput.GetValue(ExifTag.XResolution), encodedImageExifProfile.GetValue(ExifTag.XResolution));
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Assert.Equal(exifProfileInput.GetValue(ExifTag.YResolution), encodedImageExifProfile.GetValue(ExifTag.YResolution));
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Assert.Equal(xmpProfileInput, encodedImageXmpProfile);
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Assert.Equal("IrfanView", exifProfileInput.GetValue(ExifTag.Software).Value);
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Assert.Equal("This is Название", exifProfileInput.GetValue(ExifTag.ImageDescription).Value);
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Assert.Equal("This is Изготовитель камеры", exifProfileInput.GetValue(ExifTag.Make).Value);
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Assert.Equal("This is Авторские права", exifProfileInput.GetValue(ExifTag.Copyright).Value);
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Assert.Equal(exifProfileInput.GetValue(ExifTag.ImageDescription).Value, encodedImageExifProfile.GetValue(ExifTag.ImageDescription).Value);
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Assert.Equal(exifProfileInput.GetValue(ExifTag.Make).Value, encodedImageExifProfile.GetValue(ExifTag.Make).Value);
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Assert.Equal(exifProfileInput.GetValue(ExifTag.Copyright).Value, encodedImageExifProfile.GetValue(ExifTag.Copyright).Value);
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// Note that the encoded profile has PlanarConfiguration explicitly set, which is missing in the original image profile.
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Assert.Equal((ushort)TiffPlanarConfiguration.Chunky, encodedImageExifProfile.GetValue(ExifTag.PlanarConfiguration)?.Value);
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Assert.Equal(exifProfileInput.Values.Count + 1, encodedImageExifProfile.Values.Count);
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}
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}
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}
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