WebP Identify test added, webp sample files copied from official samples repository

7 years ago · 80cf5d83ef
169 changed files with 1238 additions and 133 deletions
--- a/src/ImageSharp/Formats/WebP/Readme.md
+++ b/src/ImageSharp/Formats/WebP/Readme.md
@ -6,3 +6,4 @@ Reference implementation, specification and stuff like that:
 - [WebP Spec 1.0.3](https://chromium.googlesource.com/webm/libwebp/+/v1.0.3/doc/webp-container-spec.txt)
 - [WebP VP8 chunk Spec](http://tools.ietf.org/html/rfc6386)
 - [WebP filefront](https://wiki.fileformat.com/image/webp/)
+- [WebP test data](https://github.com/webmproject/libwebp-test-data/)
--- a/tests/ImageSharp.Tests/Formats/WebP/WebPDecoderTests.cs
+++ b/tests/ImageSharp.Tests/Formats/WebP/WebPDecoderTests.cs
@ -2,25 +2,18 @@
 // Licensed under the Apache License, Version 2.0.

 using System.IO;
-using SixLabors.ImageSharp.PixelFormats;
 using Xunit;

 // ReSharper disable InconsistentNaming

 namespace SixLabors.ImageSharp.Tests.Formats.WebP
 {
-    using SixLabors.ImageSharp.Formats.WebP;
    using SixLabors.ImageSharp.Metadata;
+    using static SixLabors.ImageSharp.Tests.TestImages.WebP;
    using static TestImages.Bmp;

    public class WebPDecoderTests
    {
-        public const PixelTypes CommonNonDefaultPixelTypes = PixelTypes.Rgba32 | PixelTypes.Bgra32 | PixelTypes.RgbaVector;
-
-        public static readonly string[] MiscBmpFiles = Miscellaneous;
-
-        public static readonly string[] BitfieldsBmpFiles = BitFields;
-
        public static readonly TheoryData<string, int, int, PixelResolutionUnit> RatioFiles =
        new TheoryData<string, int, int, PixelResolutionUnit>
        {
@ -30,72 +23,16 @@ namespace SixLabors.ImageSharp.Tests.Formats.WebP
        };

        [Theory]
-        [WithFileCollection(nameof(MiscBmpFiles), PixelTypes.Rgba32)]
-        public void BmpDecoder_CanDecode_MiscellaneousBitmaps<TPixel>(TestImageProvider<TPixel> provider)
-            where TPixel : struct, IPixel<TPixel>
-        {
-            using (Image<TPixel> image = provider.GetImage(new WebPDecoder()))
-            {
-                image.DebugSave(provider);
-                if (TestEnvironment.IsWindows)
-                {
-                    image.CompareToOriginal(provider);
-                }
-            }
-        }
-
-        [Theory]
-        [WithFile(Bit16Inverted, PixelTypes.Rgba32)]
-        [WithFile(Bit8Inverted, PixelTypes.Rgba32)]
-        public void BmpDecoder_CanDecode_Inverted<TPixel>(TestImageProvider<TPixel> provider)
-            where TPixel : struct, IPixel<TPixel>
-        {
-            using (Image<TPixel> image = provider.GetImage(new WebPDecoder()))
-            {
-                image.DebugSave(provider);
-                image.CompareToOriginal(provider);
-            }
-        }
-
-        [Theory]
-        [InlineData(Bit32Rgb, 32)]
-        [InlineData(Bit32Rgba, 32)]
-        [InlineData(Car, 24)]
-        [InlineData(F, 24)]
-        [InlineData(NegHeight, 24)]
-        [InlineData(Bit16, 16)]
-        [InlineData(Bit16Inverted, 16)]
-        [InlineData(Bit8, 8)]
-        [InlineData(Bit8Inverted, 8)]
-        [InlineData(Bit4, 4)]
-        [InlineData(Bit1, 1)]
-        [InlineData(Bit1Pal1, 1)]
-        public void Identify_DetectsCorrectPixelType(string imagePath, int expectedPixelSize)
+        [InlineData(Lossless.Lossless1, 1000, 307)]
+        public void Identify_DetectsCorrectDimensions(string imagePath, int expectedWidth, int expectedHeight)
        {
            var testFile = TestFile.Create(imagePath);
            using (var stream = new MemoryStream(testFile.Bytes, false))
            {
                IImageInfo imageInfo = Image.Identify(stream);
                Assert.NotNull(imageInfo);
-                Assert.Equal(expectedPixelSize, imageInfo.PixelType?.BitsPerPixel);
-            }
-        }
-
-        [Theory]
-        [MemberData(nameof(RatioFiles))]
-        public void Decode_VerifyRatio(string imagePath, int xResolution, int yResolution, PixelResolutionUnit resolutionUnit)
-        {
-            var testFile = TestFile.Create(imagePath);
-            using (var stream = new MemoryStream(testFile.Bytes, false))
-            {
-                var decoder = new WebPDecoder();
-                using (Image<Rgba32> image = decoder.Decode<Rgba32>(Configuration.Default, stream))
-                {
-                    ImageMetadata meta = image.Metadata;
-                    Assert.Equal(xResolution, meta.HorizontalResolution);
-                    Assert.Equal(yResolution, meta.VerticalResolution);
-                    Assert.Equal(resolutionUnit, meta.ResolutionUnits);
-                }
+                Assert.Equal(expectedWidth, imageInfo.Width);
+                Assert.Equal(expectedHeight, imageInfo.Height);
            }
        }
    }
--- a/tests/ImageSharp.Tests/TestImages.cs
+++ b/tests/ImageSharp.Tests/TestImages.cs
@ -368,13 +368,10 @@ namespace SixLabors.ImageSharp.Tests

        public static class WebP
        {
+            //TODO: actualize it with fresh sample images
            public static class Lossless
            {
-                public const string SampleWebpOne = "WebP/Lossless/1_webp_ll.webp";
-                public const string SampleWebpTwo = "WebP/Lossless/2_webp_ll.webp";
-                public const string SampleWebpThree = "WebP/Lossless/3_webp_ll.webp";
-                public const string SampleWebpFour = "WebP/Lossless/4_webp_ll.webp";
-                public const string SampleWebpFive = "WebP/Lossless/5_webp_ll.webp";
+                public const string Lossless1 = "WebP/lossless1.webp";
            }

            public static class Lossy
@ -397,21 +394,7 @@ namespace SixLabors.ImageSharp.Tests

            public static readonly string[] All =
            {
-                Lossless.SampleWebpOne,
-                Lossless.SampleWebpTwo,
-                Lossless.SampleWebpThree,
-                Lossless.SampleWebpFour,
-                Lossless.SampleWebpFive,
-                Lossy.SampleWebpOne,
-                Lossy.SampleWebpTwo,
-                Lossy.SampleWebpThree,
-                Lossy.SampleWebpFour,
-                Lossy.SampleWebpFive,
-                Lossy.Alpha.SampleWebpOne,
-                Lossy.Alpha.SampleWebpTwo,
-                Lossy.Alpha.SampleWebpThree,
-                Lossy.Alpha.SampleWebpFour,
-                Lossy.Alpha.SampleWebpFive
+                Lossless.Lossless1
            };
        }
    }
--- a/tests/Images/Input/WebP/Lossless/1_webp_ll.webp
+++ b/tests/Images/Input/WebP/Lossless/1_webp_ll.webp
@ -1,3 +0,0 @@
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-size 81977
--- a/tests/Images/Input/WebP/Lossless/2_webp_ll.webp
+++ b/tests/Images/Input/WebP/Lossless/2_webp_ll.webp
@ -1,3 +0,0 @@
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-size 27669
--- a/tests/Images/Input/WebP/Lossless/3_webp_ll.webp
+++ b/tests/Images/Input/WebP/Lossless/3_webp_ll.webp
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--- a/tests/Images/Input/WebP/Lossless/4_webp_ll.webp
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+f434b118e30f3146c49db487e1ff2ba5  lossless4.webp.ppm
+22e4581c62b8f17f2fc8e9c3e865fdc7  lossless4.webp.tiff
+9bb8a5556e6c7cec368eac26210fd4a8  lossy_alpha4.webp.bmp
+63945faa35db26000573bff7a02bba2e  lossy_alpha4.webp.pam
+96507416669c3135a73ced1b4f79d45c  lossy_alpha4.webp.pgm
+2f761d6794b556840b572d3db93e7bee  lossy_alpha4.webp.ppm
+70139ffba2b922bc2e93de3aa162d914  lossy_alpha4.webp.tiff
+501113e927e73c99e90f874bc635e06d  near_lossless_75.webp.bmp
+dc04940d59a46f514c00cd7c90393c13  near_lossless_75.webp.pam
+ef032f8837e7245def5ab012f7a04c8d  near_lossless_75.webp.pgm
+a81c1e1c64508cdea757fd2ac8f9d31b  near_lossless_75.webp.ppm
+a23482cf9c7e4ed2c4e5bc2534455dcb  near_lossless_75.webp.tiff
+34efa50cddbff8575720f270387414c9  color_cache_bits_11.webp.bmp
+3d9213ea387706db93f0b39247d77573  color_cache_bits_11.webp.pam
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+ebdd46e0760b2a4891e6550b37c00660  color_cache_bits_11.webp.ppm
+a956c5897f57ca3432c3eff371e577f5  color_cache_bits_11.webp.tiff
+7823bb625c9002171398fa5a190fe326  big_endian_bug_393.webp.bmp
+7d41a1e1f15453ee91fc05b0b92ff13b  big_endian_bug_393.webp.pam
+1700bae9a667cd9478ba2b8a969491df  big_endian_bug_393.webp.pgm
+f8d4f927b7dc47d52265a7951b6eb891  big_endian_bug_393.webp.ppm
+ffc5abfa7d15035bafc4285faece9b9a  big_endian_bug_393.webp.tiff
--- a/tests/Images/Input/WebP/lossless1.webp
+++ b/tests/Images/Input/WebP/lossless1.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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--- a/tests/Images/Input/WebP/lossless2.webp
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@ -0,0 +1,3 @@
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--- a/tests/Images/Input/WebP/lossless_color_transform.bmp
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--- a/tests/Images/Input/WebP/lossless_color_transform.pgm
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--- a/tests/Images/Input/WebP/lossless_color_transform.ppm
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--- a/tests/Images/Input/WebP/lossless_color_transform.tiff
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--- a/tests/Images/Input/WebP/lossless_vec_1_7.webp
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--- a/tests/Images/Input/WebP/lossless_vec_1_9.webp
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--- a/tests/Images/Input/WebP/lossless_vec_2_0.webp
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--- a/tests/Images/Input/WebP/lossless_vec_2_1.webp
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--- a/tests/Images/Input/WebP/lossless_vec_2_10.webp
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--- a/tests/Images/Input/WebP/lossless_vec_2_11.webp
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--- a/tests/Images/Input/WebP/lossless_vec_2_14.webp
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--- a/tests/Images/Input/WebP/lossless_vec_2_2.webp
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--- a/tests/Images/Input/WebP/lossless_vec_2_3.webp
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--- a/tests/Images/Input/WebP/lossless_vec_2_4.webp
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--- a/tests/Images/Input/WebP/lossless_vec_2_5.webp
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--- a/tests/Images/Input/WebP/lossless_vec_2_6.webp
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@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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--- a/tests/Images/Input/WebP/lossless_vec_2_7.webp
+++ b/tests/Images/Input/WebP/lossless_vec_2_7.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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--- a/tests/Images/Input/WebP/lossless_vec_2_8.webp
+++ b/tests/Images/Input/WebP/lossless_vec_2_8.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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--- a/tests/Images/Input/WebP/lossless_vec_2_9.webp
+++ b/tests/Images/Input/WebP/lossless_vec_2_9.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 10304
--- a/tests/Images/Input/WebP/lossless_vec_list.txt
+++ b/tests/Images/Input/WebP/lossless_vec_list.txt
@ -0,0 +1,44 @@
+List of features used in each test vector.
+All the 'lossless_vec_1_*.webp' WebP files should decode to an image comparable to 'grid.pam' or,
+equivalently 'grid.png'.
+This synthetic picture is made of 16x16 grid-alternating pixels with RGBA values equal to
+blue B=(0,0,255,255) and half-transparent red R=(255,0,0,128), according to
+the pattern:
+BRBRBRBRBRBRBRBR
+RBRBRBRBRBRBRBRB
+BRBRBRBRBRBRBRBR
+RBRBRBRBRBRBRBRB
+BRBRBRBRBRBRBRBR
+RBRBRBRBRBRBRBRB
+BRBRBRBRBRBRBRBR
+RBRBRBRBRBRBRBRB
+BRBRBRBRBRBRBRBR
+RBRBRBRBRBRBRBRB
+BRBRBRBRBRBRBRBR
+RBRBRBRBRBRBRBRB
+BRBRBRBRBRBRBRBR
+RBRBRBRBRBRBRBRB
+BRBRBRBRBRBRBRBR
+RBRBRBRBRBRBRBRB
+
+The 'lossless_vec_2_*.webp' WebP files should decode to an image comparable
+to 'peak.pam' or, equivalently 'peak.png'. Their alpha channel is fully
+opaque.
+
+Feature list:
+lossless_vec_?_0.webp: none
+lossless_vec_?_1.webp: PALETTE
+lossless_vec_?_2.webp: PREDICTION
+lossless_vec_?_3.webp: PREDICTION PALETTE
+lossless_vec_?_4.webp: SUBTRACT-GREEN
+lossless_vec_?_5.webp: SUBTRACT-GREEN PALETTE
+lossless_vec_?_6.webp: PREDICTION SUBTRACT-GREEN
+lossless_vec_?_7.webp: PREDICTION SUBTRACT-GREEN PALETTE
+lossless_vec_?_8.webp: CROSS-COLOR-TRANSFORM
+lossless_vec_?_9.webp: CROSS-COLOR-TRANSFORM PALETTE
+lossless_vec_?_10.webp: PREDICTION CROSS-COLOR-TRANSFORM
+lossless_vec_?_11.webp: PREDICTION CROSS-COLOR-TRANSFORM PALETTE
+lossless_vec_?_12.webp: CROSS-COLOR-TRANSFORM SUBTRACT-GREEN
+lossless_vec_?_13.webp: CROSS-COLOR-TRANSFORM SUBTRACT-GREEN PALETTE
+lossless_vec_?_14_.webp: PREDICTION CROSS-COLOR-TRANSFORM SUBTRACT-GREEN
+lossless_vec_?_15.webp: PREDICTION CROSS-COLOR-TRANSFORM SUBTRACT-GREEN PALETTE
--- a/tests/Images/Input/WebP/lossy_alpha1.webp
+++ b/tests/Images/Input/WebP/lossy_alpha1.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:403dff2d4cffc78607bcd6088fade38ed4a0b26e83b2927b0b1f28c0a826ef1c
+size 19478
--- a/tests/Images/Input/WebP/lossy_alpha2.webp
+++ b/tests/Images/Input/WebP/lossy_alpha2.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5f2cd2585d5254903227bd86f367b400861cde62db9337fb74dd98d6123ce06c
+size 13566
--- a/tests/Images/Input/WebP/lossy_alpha3.webp
+++ b/tests/Images/Input/WebP/lossy_alpha3.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ca1d20c440c56eb8b1507e2abafe3447a4f4e11f3d4976a0dc1e93df68881126
+size 9960
--- a/tests/Images/Input/WebP/lossy_alpha4.webp
+++ b/tests/Images/Input/WebP/lossy_alpha4.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2feb221aee944cb273b11cf02c268601d657f6a8def745e4a6b24031650cd701
+size 4262
--- a/tests/Images/Input/WebP/lossy_extreme_probabilities.webp
+++ b/tests/Images/Input/WebP/lossy_extreme_probabilities.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4bad65a42ed076a8684494c8a11eb8be02da328195228aa635276f90b4523f27
+size 468740
--- a/tests/Images/Input/WebP/lossy_q0_f100.webp
+++ b/tests/Images/Input/WebP/lossy_q0_f100.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cf480a1328f5f68b541f80e8af1bf82545f948874dd05aacd355adee2b7ca935
+size 270
--- a/tests/Images/Input/WebP/near_lossless_75.webp
+++ b/tests/Images/Input/WebP/near_lossless_75.webp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:12e6b033cb2e636224bd787843bc528cfe42f33fd7c1f3814b1f77269b1ec2ab
+size 45274
--- a/tests/Images/Input/WebP/peak.bmp
+++ b/tests/Images/Input/WebP/peak.bmp
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8bb45b4f5d7114ca7bf93e5025d91f3558c1925908fb368017ebc5d01a64a00b
+size 49206
--- a/tests/Images/Input/WebP/peak.pam
+++ b/tests/Images/Input/WebP/peak.pam
--- a/tests/Images/Input/WebP/peak.pgm
+++ b/tests/Images/Input/WebP/peak.pgm
--- a/tests/Images/Input/WebP/peak.png
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