From b19f65560210bee73db3007019ad971e10941db6 Mon Sep 17 00:00:00 2001 From: JimBobSquarePants Date: Thu, 5 Oct 2017 14:00:19 +1100 Subject: [PATCH 1/4] Update EXIF on rotate. Fix #268 Since we don't know the updated rotation value and EXIF tags only cover certain angles the best fix is to remove the rotate tag. We also update height width if the canvas has been expanded. --- .../Processors/Transforms/RotateProcessor.cs | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/src/ImageSharp/Processing/Processors/Transforms/RotateProcessor.cs b/src/ImageSharp/Processing/Processors/Transforms/RotateProcessor.cs index a7fb400acc..f057c82541 100644 --- a/src/ImageSharp/Processing/Processors/Transforms/RotateProcessor.cs +++ b/src/ImageSharp/Processing/Processors/Transforms/RotateProcessor.cs @@ -7,6 +7,7 @@ using System.Threading.Tasks; using SixLabors.ImageSharp.Advanced; using SixLabors.ImageSharp.Helpers; using SixLabors.ImageSharp.Memory; +using SixLabors.ImageSharp.MetaData.Profiles.Exif; using SixLabors.ImageSharp.PixelFormats; using SixLabors.Primitives; @@ -24,6 +25,11 @@ namespace SixLabors.ImageSharp.Processing.Processors /// private Matrix3x2 processMatrix; + /// + /// The final rotated angle. + /// + private int optimizedRotatedAngle; + /// /// Gets or sets the angle of processMatrix in degrees. /// @@ -87,6 +93,30 @@ namespace SixLabors.ImageSharp.Processing.Processors } } + /// + protected override void AfterImageApply(Image source, Rectangle sourceRectangle) + { + ExifProfile profile = source.MetaData.ExifProfile; + if (profile == null) + { + return; + } + + if (MathF.Abs(this.Angle) < Constants.Epsilon) + { + // No need to do anything so return. + return; + } + + profile.RemoveValue(ExifTag.Orientation); + + if (this.Expand && profile.GetValue(ExifTag.PixelXDimension) != null) + { + profile.SetValue(ExifTag.PixelXDimension, source.Width); + profile.SetValue(ExifTag.PixelYDimension, source.Height); + } + } + /// /// Rotates the images with an optimized method when the angle is 90, 180 or 270 degrees. /// From 14756d7a603857ec8ccaa78037023810667fded9 Mon Sep 17 00:00:00 2001 From: JimBobSquarePants Date: Thu, 5 Oct 2017 14:03:27 +1100 Subject: [PATCH 2/4] Remove unused field --- .../Processing/Processors/Transforms/RotateProcessor.cs | 5 ----- 1 file changed, 5 deletions(-) diff --git a/src/ImageSharp/Processing/Processors/Transforms/RotateProcessor.cs b/src/ImageSharp/Processing/Processors/Transforms/RotateProcessor.cs index f057c82541..86a0c73603 100644 --- a/src/ImageSharp/Processing/Processors/Transforms/RotateProcessor.cs +++ b/src/ImageSharp/Processing/Processors/Transforms/RotateProcessor.cs @@ -25,11 +25,6 @@ namespace SixLabors.ImageSharp.Processing.Processors /// private Matrix3x2 processMatrix; - /// - /// The final rotated angle. - /// - private int optimizedRotatedAngle; - /// /// Gets or sets the angle of processMatrix in degrees. /// From f741b3a2a0803cb34b560169b2b719e624ca82da Mon Sep 17 00:00:00 2001 From: JimBobSquarePants Date: Fri, 6 Oct 2017 11:34:16 +1100 Subject: [PATCH 3/4] Ensure colormap cache is cleared --- src/ImageSharp/Quantizers/OctreeQuantizer{TPixel}.cs | 1 + src/ImageSharp/Quantizers/PaletteQuantizer{TPixel}.cs | 1 + src/ImageSharp/Quantizers/WuQuantizer{TPixel}.cs | 1 + 3 files changed, 3 insertions(+) diff --git a/src/ImageSharp/Quantizers/OctreeQuantizer{TPixel}.cs b/src/ImageSharp/Quantizers/OctreeQuantizer{TPixel}.cs index 49adce23b3..8766f10420 100644 --- a/src/ImageSharp/Quantizers/OctreeQuantizer{TPixel}.cs +++ b/src/ImageSharp/Quantizers/OctreeQuantizer{TPixel}.cs @@ -61,6 +61,7 @@ namespace SixLabors.ImageSharp.Quantizers this.colors = (byte)maxColors.Clamp(1, 255); this.octree = new Octree(this.GetBitsNeededForColorDepth(this.colors)); this.palette = null; + this.colorMap.Clear(); return base.Quantize(image, this.colors); } diff --git a/src/ImageSharp/Quantizers/PaletteQuantizer{TPixel}.cs b/src/ImageSharp/Quantizers/PaletteQuantizer{TPixel}.cs index ca11a042fb..0b95c09a62 100644 --- a/src/ImageSharp/Quantizers/PaletteQuantizer{TPixel}.cs +++ b/src/ImageSharp/Quantizers/PaletteQuantizer{TPixel}.cs @@ -58,6 +58,7 @@ namespace SixLabors.ImageSharp.Quantizers public override QuantizedImage Quantize(ImageFrame image, int maxColors) { Array.Resize(ref this.colors, maxColors.Clamp(1, 255)); + this.colorMap.Clear(); return base.Quantize(image, maxColors); } diff --git a/src/ImageSharp/Quantizers/WuQuantizer{TPixel}.cs b/src/ImageSharp/Quantizers/WuQuantizer{TPixel}.cs index 77c421468d..8ab390f4e7 100644 --- a/src/ImageSharp/Quantizers/WuQuantizer{TPixel}.cs +++ b/src/ImageSharp/Quantizers/WuQuantizer{TPixel}.cs @@ -139,6 +139,7 @@ namespace SixLabors.ImageSharp.Quantizers this.colors = maxColors.Clamp(1, 255); this.palette = null; + this.colorMap.Clear(); try { From 5237688ce4ab4e74a2f4f18cfb05469e0316cdb0 Mon Sep 17 00:00:00 2001 From: JimBobSquarePants Date: Fri, 6 Oct 2017 11:34:41 +1100 Subject: [PATCH 4/4] FS makes much smaller files --- src/ImageSharp/Quantizers/QuantizerBase{TPixel}.cs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/ImageSharp/Quantizers/QuantizerBase{TPixel}.cs b/src/ImageSharp/Quantizers/QuantizerBase{TPixel}.cs index 7f58ff1bf5..20ba2e637e 100644 --- a/src/ImageSharp/Quantizers/QuantizerBase{TPixel}.cs +++ b/src/ImageSharp/Quantizers/QuantizerBase{TPixel}.cs @@ -43,7 +43,7 @@ namespace SixLabors.ImageSharp.Quantizers.Base public bool Dither { get; set; } = true; /// - public IErrorDiffuser DitherType { get; set; } = new SierraLiteDiffuser(); + public IErrorDiffuser DitherType { get; set; } = new FloydSteinbergDiffuser(); /// public virtual QuantizedImage Quantize(ImageFrame image, int maxColors)