Merge branch 'js/gif-fixes' into js/png-pallete

3 years ago · c3ed86d135
261 changed files with 171 additions and 778 deletions
--- a/src/ImageSharp/Formats/Pbm/BufferedReadStreamExtensions.cs
+++ b/src/ImageSharp/Formats/Pbm/BufferedReadStreamExtensions.cs
@ -28,7 +28,7 @@ internal static class BufferedReadStreamExtensions
                {
                    innerValue = stream.ReadByte();
                }
-                while (innerValue != 0x0a);
+                while (innerValue is not 0x0a and not -0x1);

                // Continue searching for whitespace.
                val = innerValue;
--- a/tests/ImageSharp.Tests/Formats/Gif/GifDecoderTests.cs
+++ b/tests/ImageSharp.Tests/Formats/Gif/GifDecoderTests.cs
@ -40,9 +40,12 @@ public class GifDecoderTests
    public void Decode_Issue2450<TPixel>(TestImageProvider<TPixel> provider)
    where TPixel : unmanaged, IPixel<TPixel>
    {
+        // Images have many frames, only compare a selection of them.
+        static bool Predicate(int i, int _) => i % 8 == 0;
+
        using Image<TPixel> image = provider.GetImage();
-        image.DebugSaveMultiFrame(provider);
-        image.CompareToReferenceOutputMultiFrame(provider, ImageComparer.Exact);
+        image.DebugSaveMultiFrame(provider, predicate: Predicate);
+        image.CompareToReferenceOutputMultiFrame(provider, ImageComparer.Exact, predicate: Predicate);
    }

    [Theory]
--- a/tests/ImageSharp.Tests/Formats/Pbm/PbmMetadataTests.cs
+++ b/tests/ImageSharp.Tests/Formats/Pbm/PbmMetadataTests.cs
@ -1,6 +1,7 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.

+using SixLabors.ImageSharp.Formats;
 using SixLabors.ImageSharp.Formats.Pbm;
 using static SixLabors.ImageSharp.Tests.TestImages.Pbm;

@ -80,4 +81,14 @@ public class PbmMetadataTests
        Assert.NotNull(bitmapMetadata);
        Assert.Equal(expectedComponentType, bitmapMetadata.ComponentType);
    }
+
+    [Fact]
+    public void Identify_HandlesCraftedDenialOfServiceString()
+    {
+        byte[] bytes = Convert.FromBase64String("UDEjWAAACQAAAAA=");
+        ImageInfo info = Image.Identify(bytes);
+        Assert.Equal(default, info.Size);
+        Configuration.Default.ImageFormatsManager.TryFindFormatByFileExtension("pbm", out IImageFormat format);
+        Assert.Equal(format!, info.Metadata.DecodedImageFormat);
+    }
 }
--- a/tests/ImageSharp.Tests/TestUtilities/ImageComparison/ImageComparer.cs
+++ b/tests/ImageSharp.Tests/TestUtilities/ImageComparison/ImageComparer.cs
@ -46,19 +46,38 @@ public static class ImageComparerExtensions
    public static IEnumerable<ImageSimilarityReport<TPixelA, TPixelB>> CompareImages<TPixelA, TPixelB>(
        this ImageComparer comparer,
        Image<TPixelA> expected,
-        Image<TPixelB> actual)
+        Image<TPixelB> actual,
+        Func<int, int, bool> predicate = null)
        where TPixelA : unmanaged, IPixel<TPixelA>
        where TPixelB : unmanaged, IPixel<TPixelB>
    {
-        var result = new List<ImageSimilarityReport<TPixelA, TPixelB>>();
+        List<ImageSimilarityReport<TPixelA, TPixelB>> result = new();

-        if (expected.Frames.Count != actual.Frames.Count)
+        int expectedFrameCount = actual.Frames.Count;
+        if (predicate != null)
+        {
+            expectedFrameCount = 0;
+            for (int i = 0; i < actual.Frames.Count; i++)
+            {
+                if (predicate(i, actual.Frames.Count))
+                {
+                    expectedFrameCount++;
+                }
+            }
+        }
+
+        if (expected.Frames.Count != expectedFrameCount)
        {
-            throw new Exception("Frame count does not match!");
+            throw new ImagesSimilarityException("Frame count does not match!");
        }

        for (int i = 0; i < expected.Frames.Count; i++)
        {
+            if (predicate != null && !predicate(i, expected.Frames.Count))
+            {
+                continue;
+            }
+
            ImageSimilarityReport<TPixelA, TPixelB> report = comparer.CompareImagesOrFrames(i, expected.Frames[i], actual.Frames[i]);
            if (!report.IsEmpty)
            {
@ -72,7 +91,8 @@ public static class ImageComparerExtensions
    public static void VerifySimilarity<TPixelA, TPixelB>(
        this ImageComparer comparer,
        Image<TPixelA> expected,
-        Image<TPixelB> actual)
+        Image<TPixelB> actual,
+        Func<int, int, bool> predicate = null)
        where TPixelA : unmanaged, IPixel<TPixelA>
        where TPixelB : unmanaged, IPixel<TPixelB>
    {
@ -81,12 +101,25 @@ public static class ImageComparerExtensions
            throw new ImageDimensionsMismatchException(expected.Size, actual.Size);
        }

-        if (expected.Frames.Count != actual.Frames.Count)
+        int expectedFrameCount = actual.Frames.Count;
+        if (predicate != null)
+        {
+            expectedFrameCount = 0;
+            for (int i = 0; i < actual.Frames.Count; i++)
+            {
+                if (predicate(i, actual.Frames.Count))
+                {
+                    expectedFrameCount++;
+                }
+            }
+        }
+
+        if (expected.Frames.Count != expectedFrameCount)
        {
            throw new ImagesSimilarityException("Image frame count does not match!");
        }

-        IEnumerable<ImageSimilarityReport> reports = comparer.CompareImages(expected, actual);
+        IEnumerable<ImageSimilarityReport> reports = comparer.CompareImages(expected, actual, predicate);
        if (reports.Any())
        {
            throw new ImageDifferenceIsOverThresholdException(reports);
--- a/tests/ImageSharp.Tests/TestUtilities/ImagingTestCaseUtility.cs
+++ b/tests/ImageSharp.Tests/TestUtilities/ImagingTestCaseUtility.cs
@ -184,7 +184,8 @@ public class ImagingTestCaseUtility
        string extension = null,
        object testOutputDetails = null,
        bool appendPixelTypeToFileName = true,
-        bool appendSourceFileOrDescription = true)
+        bool appendSourceFileOrDescription = true,
+        Func<int, int, bool> predicate = null)
    {
        string baseDir = this.GetTestOutputFileName(string.Empty, testOutputDetails, appendPixelTypeToFileName, appendSourceFileOrDescription);

@ -195,8 +196,12 @@ public class ImagingTestCaseUtility

        for (int i = 0; i < frameCount; i++)
        {
-            string filePath = $"{baseDir}/{i:D2}.{extension}";
-            yield return filePath;
+            if (predicate != null && !predicate(i, frameCount))
+            {
+                continue;
+            }
+
+            yield return $"{baseDir}/{i:D2}.{extension}";
        }
    }

@ -205,27 +210,35 @@ public class ImagingTestCaseUtility
        string extension = "png",
        IImageEncoder encoder = null,
        object testOutputDetails = null,
-        bool appendPixelTypeToFileName = true)
+        bool appendPixelTypeToFileName = true,
+        Func<int, int, bool> predicate = null)
        where TPixel : unmanaged, IPixel<TPixel>
    {
-        encoder = encoder ?? TestEnvironment.GetReferenceEncoder($"foo.{extension}");
+        encoder ??= TestEnvironment.GetReferenceEncoder($"foo.{extension}");

        string[] files = this.GetTestOutputFileNamesMultiFrame(
            image.Frames.Count,
            extension,
            testOutputDetails,
-            appendPixelTypeToFileName).ToArray();
+            appendPixelTypeToFileName,
+            predicate: predicate).ToArray();

        for (int i = 0; i < image.Frames.Count; i++)
        {
-            using (Image<TPixel> frameImage = image.Frames.CloneFrame(i))
+            if (predicate != null && !predicate(i, image.Frames.Count))
            {
-                string filePath = files[i];
-                using (FileStream stream = File.OpenWrite(filePath))
-                {
-                    frameImage.Save(stream, encoder);
-                }
+                continue;
            }
+
+            if (i >= files.Length)
+            {
+                break;
+            }
+
+            using Image<TPixel> frameImage = image.Frames.CloneFrame(i);
+            string filePath = files[i];
+            using FileStream stream = File.OpenWrite(filePath);
+            frameImage.Save(stream, encoder);
        }

        return files;
@ -236,20 +249,17 @@ public class ImagingTestCaseUtility
        object testOutputDetails,
        bool appendPixelTypeToFileName,
        bool appendSourceFileOrDescription)
-    {
-        return TestEnvironment.GetReferenceOutputFileName(
+        => TestEnvironment.GetReferenceOutputFileName(
            this.GetTestOutputFileName(extension, testOutputDetails, appendPixelTypeToFileName, appendSourceFileOrDescription));
-    }

    public string[] GetReferenceOutputFileNamesMultiFrame(
        int frameCount,
        string extension,
        object testOutputDetails,
-        bool appendPixelTypeToFileName = true)
-    {
-        return this.GetTestOutputFileNamesMultiFrame(frameCount, extension, testOutputDetails)
-            .Select(TestEnvironment.GetReferenceOutputFileName).ToArray();
-    }
+        bool appendPixelTypeToFileName = true,
+        Func<int, int, bool> predicate = null)
+        => this.GetTestOutputFileNamesMultiFrame(frameCount, extension, testOutputDetails, appendPixelTypeToFileName, predicate: predicate)
+        .Select(TestEnvironment.GetReferenceOutputFileName).ToArray();

    internal void Init(string typeName, string methodName, string outputSubfolderName)
    {
--- a/tests/ImageSharp.Tests/TestUtilities/TestImageExtensions.cs
+++ b/tests/ImageSharp.Tests/TestUtilities/TestImageExtensions.cs
@ -67,10 +67,10 @@ public static class TestImageExtensions
        provider.Utility.SaveTestOutputFile(
            image,
            extension,
+            encoder: encoder,
            testOutputDetails: testOutputDetails,
            appendPixelTypeToFileName: appendPixelTypeToFileName,
-            appendSourceFileOrDescription: appendSourceFileOrDescription,
-            encoder: encoder);
+            appendSourceFileOrDescription: appendSourceFileOrDescription);
        return image;
    }

@ -107,7 +107,8 @@ public static class TestImageExtensions
        ITestImageProvider provider,
        object testOutputDetails = null,
        string extension = "png",
-        bool appendPixelTypeToFileName = true)
+        bool appendPixelTypeToFileName = true,
+        Func<int, int, bool> predicate = null)
        where TPixel : unmanaged, IPixel<TPixel>
    {
        if (TestEnvironment.RunsWithCodeCoverage)
@ -119,7 +120,8 @@ public static class TestImageExtensions
            image,
            extension,
            testOutputDetails: testOutputDetails,
-            appendPixelTypeToFileName: appendPixelTypeToFileName);
+            appendPixelTypeToFileName: appendPixelTypeToFileName,
+            predicate: predicate);

        return image;
    }
@ -237,7 +239,6 @@ public static class TestImageExtensions
        ITestImageProvider provider,
        FormattableString testOutputDetails,
        string extension = "png",
-        bool grayscale = false,
        bool appendPixelTypeToFileName = true,
        bool appendSourceFileOrDescription = true)
        where TPixel : unmanaged, IPixel<TPixel>
@ -246,7 +247,6 @@ public static class TestImageExtensions
            provider,
            (object)testOutputDetails,
            extension,
-            grayscale,
            appendPixelTypeToFileName,
            appendSourceFileOrDescription);

@ -256,12 +256,11 @@ public static class TestImageExtensions
        ITestImageProvider provider,
        object testOutputDetails = null,
        string extension = "png",
-        bool grayscale = false,
        bool appendPixelTypeToFileName = true,
        bool appendSourceFileOrDescription = true)
        where TPixel : unmanaged, IPixel<TPixel>
    {
-        using (var firstFrameOnlyImage = new Image<TPixel>(image.Width, image.Height))
+        using (Image<TPixel> firstFrameOnlyImage = new(image.Width, image.Height))
        using (Image<TPixel> referenceImage = GetReferenceOutputImage<TPixel>(
            provider,
            testOutputDetails,
@ -284,8 +283,8 @@ public static class TestImageExtensions
        ImageComparer comparer,
        object testOutputDetails = null,
        string extension = "png",
-        bool grayscale = false,
-        bool appendPixelTypeToFileName = true)
+        bool appendPixelTypeToFileName = true,
+        Func<int, int, bool> predicate = null)
        where TPixel : unmanaged, IPixel<TPixel>
    {
        using (Image<TPixel> referenceImage = GetReferenceOutputImageMultiFrame<TPixel>(
@ -293,9 +292,10 @@ public static class TestImageExtensions
            image.Frames.Count,
            testOutputDetails,
            extension,
-            appendPixelTypeToFileName))
+            appendPixelTypeToFileName,
+            predicate: predicate))
        {
-            comparer.VerifySimilarity(referenceImage, image);
+            comparer.VerifySimilarity(referenceImage, image, predicate);
        }

        return image;
@ -332,16 +332,18 @@ public static class TestImageExtensions
        int frameCount,
        object testOutputDetails = null,
        string extension = "png",
-        bool appendPixelTypeToFileName = true)
+        bool appendPixelTypeToFileName = true,
+        Func<int, int, bool> predicate = null)
        where TPixel : unmanaged, IPixel<TPixel>
    {
        string[] frameFiles = provider.Utility.GetReferenceOutputFileNamesMultiFrame(
            frameCount,
            extension,
            testOutputDetails,
-            appendPixelTypeToFileName);
+            appendPixelTypeToFileName,
+            predicate);

-        var temporaryFrameImages = new List<Image<TPixel>>();
+        List<Image<TPixel>> temporaryFrameImages = new();

        IImageDecoder decoder = TestEnvironment.GetReferenceDecoder(frameFiles[0]);

@ -359,7 +361,7 @@ public static class TestImageExtensions

        Image<TPixel> firstTemp = temporaryFrameImages[0];

-        var result = new Image<TPixel>(firstTemp.Width, firstTemp.Height);
+        Image<TPixel> result = new(firstTemp.Width, firstTemp.Height);

        foreach (Image<TPixel> fi in temporaryFrameImages)
        {
--- a/tests/Images/External/ReferenceOutput/GifDecoderTests/Decode_Issue2450_Rgba32_issue_2450.gif/00.png
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