private static void TestPngEncoderCore <TPixel>(
TestImageProvider <TPixel> provider,
PngColorType pngColorType,
PngFilterMethod pngFilterMethod,
PngBitDepth bitDepth,
int compressionLevel = 6,
int paletteSize = 255,
bool appendPngColorType = false,
bool appendPngFilterMethod = false,
bool appendPixelType = false,
bool appendCompressionLevel = false,
bool appendPaletteSize = false)
where TPixel : struct, IPixel <TPixel>
{
using (Image <TPixel> image = provider.GetImage())
{
if (!HasAlpha(pngColorType))
{
image.Mutate(c => c.MakeOpaque());
}
var encoder = new PngEncoder
{
ColorType = pngColorType,
FilterMethod = pngFilterMethod,
CompressionLevel = compressionLevel,
BitDepth = bitDepth,
Quantizer = new WuQuantizer(paletteSize)
};
string pngColorTypeInfo = appendPngColorType ? pngColorType.ToString() : string.Empty;
string pngFilterMethodInfo = appendPngFilterMethod ? pngFilterMethod.ToString() : string.Empty;
string compressionLevelInfo = appendCompressionLevel ? $"_C{compressionLevel}" : string.Empty;
string paletteSizeInfo = appendPaletteSize ? $"_PaletteSize-{paletteSize}" : string.Empty;
string debugInfo = $"{pngColorTypeInfo}{pngFilterMethodInfo}{compressionLevelInfo}{paletteSizeInfo}";
//string referenceInfo = $"{pngColorTypeInfo}";
// Does DebugSave & load reference CompareToReferenceInput():
string actualOutputFile = ((ITestImageProvider)provider).Utility.SaveTestOutputFile(image, "png", encoder, debugInfo, appendPixelType);
if (TestEnvironment.IsMono)
{
// There are bugs in mono's System.Drawing implementation, reference decoders are not always reliable!
return;
}
IImageDecoder referenceDecoder = TestEnvironment.GetReferenceDecoder(actualOutputFile);
string referenceOutputFile = ((ITestImageProvider)provider).Utility.GetReferenceOutputFileName("png", debugInfo, appendPixelType, true);
bool referenceOutputFileExists = File.Exists(referenceOutputFile);
using (var actualImage = Image.Load <TPixel>(actualOutputFile, referenceDecoder))
{
// TODO: Do we still need the reference output files?
Image <TPixel> referenceImage = referenceOutputFileExists
? Image.Load <TPixel>(referenceOutputFile, referenceDecoder)
: image;
float paletteToleranceHack = 80f / paletteSize;
paletteToleranceHack = paletteToleranceHack * paletteToleranceHack;
ImageComparer comparer = pngColorType == PngColorType.Palette
? ImageComparer.Tolerant(ToleranceThresholdForPaletteEncoder * paletteToleranceHack)
: ImageComparer.Exact;
try
{
comparer.VerifySimilarity(referenceImage, actualImage);
}
finally
{
if (referenceOutputFileExists)
{
referenceImage.Dispose();
}
}
}
}
}
public void GifDecoder_DegenerateMemoryRequest_ShouldTranslateTo_ImageFormatException<TPixel>(TestImageProvider<TPixel> provider)
where TPixel : unmanaged, IPixel<TPixel>
{
provider.LimitAllocatorBufferCapacity().InPixelsSqrt(10);
InvalidImageContentException ex = Assert.Throws<InvalidImageContentException>(() => provider.GetImage(GifDecoder));
Assert.IsType<InvalidMemoryOperationException>(ex.InnerException);
}
public void ThrowsNotSupported <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : unmanaged, IPixel <TPixel> => Assert.Throws <NotSupportedException>(() => provider.GetImage(TiffDecoder));
public void ReadApp13_WithEmptyIptc_Works <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : unmanaged, IPixel <TPixel>
{
using Image <TPixel> image = provider.GetImage(JpegDecoder);
Assert.Null(image.Metadata.IptcProfile);
}
public void DecodeBaselineJpeg_CriticalEOF_ShouldThrow_Orig <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : struct, IPixel <TPixel>
{
// TODO: We need a public ImageDecoderException class in ImageSharp!
Assert.ThrowsAny <Exception>(() => provider.GetImage(OrigJpegDecoder));
}
public void LoadingImage_BadHuffman_ShouldNotThrow <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : struct, IPixel <TPixel> => Assert.NotNull(provider.GetImage());
public void BlendFillColorOverBackround <TPixel>(
TestImageProvider <TPixel> provider,
bool triggerFillRegion,
string newColorName,
float alpha,
PixelColorBlendingMode blenderMode,
float blendPercentage)
where TPixel : struct, IPixel <TPixel>
{
var vec = TestUtils.GetPixelOfNamedColor <RgbaVector>(newColorName).ToVector4();
vec.W = alpha;
TPixel fillColor = default;
fillColor.FromVector4(vec);
using (Image <TPixel> image = provider.GetImage())
{
TPixel bgColor = image[0, 0];
var options = new GraphicsOptions(false)
{
ColorBlendingMode = blenderMode, BlendPercentage = blendPercentage
};
if (triggerFillRegion)
{
var region = new ShapeRegion(new RectangularPolygon(0, 0, 16, 16));
image.Mutate(c => c.Fill(options, new SolidBrush <TPixel>(fillColor), region));
}
else
{
image.Mutate(c => c.Fill(options, new SolidBrush <TPixel>(fillColor)));
}
var testOutputDetails = new
{
triggerFillRegion = triggerFillRegion,
newColorName = newColorName,
alpha = alpha,
blenderMode = blenderMode,
blendPercentage = blendPercentage
};
image.DebugSave(
provider,
testOutputDetails,
appendPixelTypeToFileName: false,
appendSourceFileOrDescription: false);
PixelBlender <TPixel> blender = PixelOperations <TPixel> .Instance.GetPixelBlender(
blenderMode,
PixelAlphaCompositionMode.SrcOver);
TPixel expectedPixel = blender.Blend(bgColor, fillColor, blendPercentage);
image.ComparePixelBufferTo(expectedPixel);
}
}
public void BmpDecoder_ThrowsNotSupportedException_OnUnsupportedBitmaps <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : struct, IPixel <TPixel>
{
Assert.Throws <NotSupportedException>(() => { using (provider.GetImage(new BmpDecoder())) { } });
}
public void LoadingImage_InvalidTagLength_ShouldThrow <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : struct, IPixel <TPixel> => Assert.Throws <ImageFormatException>(() => provider.GetImage());
public void BmpDecoder_ThrowsImageFormatException_OnInvalidPaletteSize <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : struct, IPixel <TPixel>
{
Assert.Throws <ImageFormatException>(() => { using (provider.GetImage(new BmpDecoder())) { } });
}
public void Encode_PreservesMetadata <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : unmanaged, IPixel <TPixel>
{
// Load Tiff image
using Image <TPixel> image = provider.GetImage(new TiffDecoder()
{
IgnoreMetadata = false
});
ImageMetadata inputMetaData = image.Metadata;
ImageFrame <TPixel> rootFrameInput = image.Frames.RootFrame;
TiffFrameMetadata frameMetaInput = rootFrameInput.Metadata.GetTiffMetadata();
byte[] xmpProfileInput = rootFrameInput.Metadata.XmpProfile;
ExifProfile exifProfileInput = rootFrameInput.Metadata.ExifProfile;
Assert.Equal(TiffCompression.Lzw, frameMetaInput.Compression);
Assert.Equal(TiffBitsPerPixel.Bit4, frameMetaInput.BitsPerPixel);
// Save to Tiff
var tiffEncoder = new TiffEncoder()
{
PhotometricInterpretation = TiffPhotometricInterpretation.Rgb
};
using var ms = new MemoryStream();
image.Save(ms, tiffEncoder);
// Assert
ms.Position = 0;
using var encodedImage = Image.Load <Rgba32>(ms);
ImageMetadata encodedImageMetaData = encodedImage.Metadata;
ImageFrame <Rgba32> rootFrameEncodedImage = encodedImage.Frames.RootFrame;
TiffFrameMetadata tiffMetaDataEncodedRootFrame = rootFrameEncodedImage.Metadata.GetTiffMetadata();
ExifProfile encodedImageExifProfile = rootFrameEncodedImage.Metadata.ExifProfile;
byte[] encodedImageXmpProfile = rootFrameEncodedImage.Metadata.XmpProfile;
Assert.Equal(TiffBitsPerPixel.Bit4, tiffMetaDataEncodedRootFrame.BitsPerPixel);
Assert.Equal(TiffCompression.Lzw, tiffMetaDataEncodedRootFrame.Compression);
Assert.Equal(inputMetaData.HorizontalResolution, encodedImageMetaData.HorizontalResolution);
Assert.Equal(inputMetaData.VerticalResolution, encodedImageMetaData.VerticalResolution);
Assert.Equal(inputMetaData.ResolutionUnits, encodedImageMetaData.ResolutionUnits);
Assert.Equal(rootFrameInput.Width, rootFrameEncodedImage.Width);
Assert.Equal(rootFrameInput.Height, rootFrameEncodedImage.Height);
PixelResolutionUnit resolutionUnitInput = UnitConverter.ExifProfileToResolutionUnit(exifProfileInput);
PixelResolutionUnit resolutionUnitEncoded = UnitConverter.ExifProfileToResolutionUnit(encodedImageExifProfile);
Assert.Equal(resolutionUnitInput, resolutionUnitEncoded);
Assert.Equal(exifProfileInput.GetValue(ExifTag.XResolution).Value.ToDouble(), encodedImageExifProfile.GetValue(ExifTag.XResolution).Value.ToDouble());
Assert.Equal(exifProfileInput.GetValue(ExifTag.YResolution).Value.ToDouble(), encodedImageExifProfile.GetValue(ExifTag.YResolution).Value.ToDouble());
Assert.Equal(xmpProfileInput, encodedImageXmpProfile);
Assert.Equal("IrfanView", exifProfileInput.GetValue(ExifTag.Software).Value);
Assert.Equal("This is Название", exifProfileInput.GetValue(ExifTag.ImageDescription).Value);
Assert.Equal("This is Изготовитель камеры", exifProfileInput.GetValue(ExifTag.Make).Value);
Assert.Equal("This is Авторские права", exifProfileInput.GetValue(ExifTag.Copyright).Value);
Assert.Equal(exifProfileInput.GetValue(ExifTag.ImageDescription).Value, encodedImageExifProfile.GetValue(ExifTag.ImageDescription).Value);
Assert.Equal(exifProfileInput.GetValue(ExifTag.Make).Value, encodedImageExifProfile.GetValue(ExifTag.Make).Value);
Assert.Equal(exifProfileInput.GetValue(ExifTag.Copyright).Value, encodedImageExifProfile.GetValue(ExifTag.Copyright).Value);
// Note that the encoded profile has PlanarConfiguration explicitly set, which is missing in the original image profile.
Assert.Equal((ushort)TiffPlanarConfiguration.Chunky, encodedImageExifProfile.GetValue(ExifTag.PlanarConfiguration)?.Value);
Assert.Equal(exifProfileInput.Values.Count + 1, encodedImageExifProfile.Values.Count);
}
public void BaselineTags <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : unmanaged, IPixel <TPixel>
{
using (Image <TPixel> image = provider.GetImage(TiffDecoder))
{
ImageFrame <TPixel> rootFrame = image.Frames.RootFrame;
Assert.Equal(32, rootFrame.Width);
Assert.Equal(32, rootFrame.Height);
Assert.NotNull(rootFrame.Metadata.XmpProfile);
Assert.Equal(2599, rootFrame.Metadata.XmpProfile.Length);
ExifProfile exifProfile = rootFrame.Metadata.ExifProfile;
TiffFrameMetadata tiffFrameMetadata = rootFrame.Metadata.GetTiffMetadata();
Assert.NotNull(exifProfile);
// The original exifProfile has 30 values, but 4 of those values will be stored in the TiffFrameMetaData
// and removed from the profile on decode.
Assert.Equal(26, exifProfile.Values.Count);
Assert.Equal(TiffBitsPerPixel.Bit4, tiffFrameMetadata.BitsPerPixel);
Assert.Equal(TiffCompression.Lzw, tiffFrameMetadata.Compression);
Assert.Equal("This is Название", exifProfile.GetValue(ExifTag.ImageDescription).Value);
Assert.Equal("This is Изготовитель камеры", exifProfile.GetValue(ExifTag.Make).Value);
Assert.Equal("This is Модель камеры", exifProfile.GetValue(ExifTag.Model).Value);
Assert.Equal("IrfanView", exifProfile.GetValue(ExifTag.Software).Value);
Assert.Null(exifProfile.GetValue(ExifTag.DateTime)?.Value);
Assert.Equal("This is author1;Author2", exifProfile.GetValue(ExifTag.Artist).Value);
Assert.Null(exifProfile.GetValue(ExifTag.HostComputer)?.Value);
Assert.Equal("This is Авторские права", exifProfile.GetValue(ExifTag.Copyright).Value);
Assert.Equal(4, exifProfile.GetValue(ExifTag.Rating).Value);
Assert.Equal(75, exifProfile.GetValue(ExifTag.RatingPercent).Value);
var expectedResolution = new Rational(10000, 1000, simplify: false);
Assert.Equal(expectedResolution, exifProfile.GetValue(ExifTag.XResolution).Value);
Assert.Equal(expectedResolution, exifProfile.GetValue(ExifTag.YResolution).Value);
Assert.Equal(new Number[] { 8u }, exifProfile.GetValue(ExifTag.StripOffsets)?.Value, new NumberComparer());
Assert.Equal(new Number[] { 297u }, exifProfile.GetValue(ExifTag.StripByteCounts)?.Value, new NumberComparer());
Assert.Null(exifProfile.GetValue(ExifTag.ExtraSamples)?.Value);
Assert.Equal(32u, exifProfile.GetValue(ExifTag.RowsPerStrip).Value);
Assert.Null(exifProfile.GetValue(ExifTag.SampleFormat));
Assert.Equal(TiffPredictor.None, tiffFrameMetadata.Predictor);
Assert.Equal(PixelResolutionUnit.PixelsPerInch, UnitConverter.ExifProfileToResolutionUnit(exifProfile));
ushort[] colorMap = exifProfile.GetValue(ExifTag.ColorMap)?.Value;
Assert.NotNull(colorMap);
Assert.Equal(48, colorMap.Length);
Assert.Equal(10537, colorMap[0]);
Assert.Equal(14392, colorMap[1]);
Assert.Equal(58596, colorMap[46]);
Assert.Equal(3855, colorMap[47]);
Assert.Equal(TiffPhotometricInterpretation.PaletteColor, tiffFrameMetadata.PhotometricInterpretation);
Assert.Equal(1u, exifProfile.GetValue(ExifTag.SamplesPerPixel).Value);
ImageMetadata imageMetaData = image.Metadata;
Assert.NotNull(imageMetaData);
Assert.Equal(PixelResolutionUnit.PixelsPerInch, imageMetaData.ResolutionUnits);
Assert.Equal(10, imageMetaData.HorizontalResolution);
Assert.Equal(10, imageMetaData.VerticalResolution);
TiffMetadata tiffMetaData = image.Metadata.GetTiffMetadata();
Assert.NotNull(tiffMetaData);
Assert.Equal(ByteOrder.LittleEndian, tiffMetaData.ByteOrder);
}
}
protected static void TestStripLength <TPixel>(
TestImageProvider <TPixel> provider,
TiffPhotometricInterpretation photometricInterpretation,
TiffCompression compression,
bool useExactComparer = true,
float compareTolerance = 0.01f)
where TPixel : unmanaged, IPixel <TPixel>
{
// arrange
var tiffEncoder = new TiffEncoder()
{
PhotometricInterpretation = photometricInterpretation, Compression = compression
};
using Image <TPixel> input = provider.GetImage();
using var memStream = new MemoryStream();
TiffFrameMetadata inputMeta = input.Frames.RootFrame.Metadata.GetTiffMetadata();
TiffCompression inputCompression = inputMeta.Compression ?? TiffCompression.None;
// act
input.Save(memStream, tiffEncoder);
// assert
memStream.Position = 0;
using var output = Image.Load <Rgba32>(memStream);
ExifProfile exifProfileOutput = output.Frames.RootFrame.Metadata.ExifProfile;
TiffFrameMetadata outputMeta = output.Frames.RootFrame.Metadata.GetTiffMetadata();
ImageFrame <Rgba32> rootFrame = output.Frames.RootFrame;
Number rowsPerStrip = exifProfileOutput.GetValue(ExifTag.RowsPerStrip) != null?exifProfileOutput.GetValue(ExifTag.RowsPerStrip).Value : TiffConstants.RowsPerStripInfinity;
Assert.True(output.Height > (int)rowsPerStrip);
Assert.True(exifProfileOutput.GetValue(ExifTag.StripOffsets)?.Value.Length > 1);
Number[] stripByteCounts = exifProfileOutput.GetValue(ExifTag.StripByteCounts)?.Value;
Assert.NotNull(stripByteCounts);
Assert.True(stripByteCounts.Length > 1);
Assert.NotNull(outputMeta.BitsPerPixel);
foreach (Number sz in stripByteCounts)
{
Assert.True((uint)sz <= TiffConstants.DefaultStripSize);
}
// For uncompressed more accurate test.
if (compression == TiffCompression.None)
{
for (int i = 0; i < stripByteCounts.Length - 1; i++)
{
// The difference must be less than one row.
int stripBytes = (int)stripByteCounts[i];
int widthBytes = ((int)outputMeta.BitsPerPixel + 7) / 8 * rootFrame.Width;
Assert.True((TiffConstants.DefaultStripSize - stripBytes) < widthBytes);
}
}
// Compare with reference.
TestTiffEncoderCore(
provider,
inputMeta.BitsPerPixel,
photometricInterpretation,
inputCompression,
useExactComparer: useExactComparer,
compareTolerance: compareTolerance);
}
public void UnrecoverableImagesShouldThrowCorrectError <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : struct, IPixel <TPixel> => Assert.Throws <ImageFormatException>(() => provider.GetImage());
