Synchronize profiles on save.

src/ImageSharp/Formats/ImageEncoder.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-using SixLabors.ImageSharp.Advanced;
 using SixLabors.ImageSharp.IO;
 using SixLabors.ImageSharp.PixelFormats;
 
@@ -42,6 +41,8 @@ public abstract class ImageEncoder : IImageEncoder
     private void EncodeWithSeekableStream<TPixel>(Image<TPixel> image, Stream stream, CancellationToken cancellationToken)
         where TPixel : unmanaged, IPixel<TPixel>
     {
+        image.SynchronizeMetadata();
+
         Configuration configuration = image.Configuration;
         if (stream.CanSeek)
         {
@@ -59,6 +60,8 @@ public abstract class ImageEncoder : IImageEncoder
     private async Task EncodeWithSeekableStreamAsync<TPixel>(Image<TPixel> image, Stream stream, CancellationToken cancellationToken)
         where TPixel : unmanaged, IPixel<TPixel>
     {
+        image.SynchronizeMetadata();
+
         Configuration configuration = image.Configuration;
         if (stream.CanSeek)
         {
@@ -66,7 +69,7 @@ public abstract class ImageEncoder : IImageEncoder
         }
         else
         {
-            using ChunkedMemoryStream ms = new(configuration.MemoryAllocator);
+            await using ChunkedMemoryStream ms = new(configuration.MemoryAllocator);
             await DoEncodeAsync(ms);
             ms.Position = 0;
             await ms.CopyToAsync(stream, configuration.StreamProcessingBufferSize, cancellationToken)

src/ImageSharp/Formats/Jpeg/JpegEncoderCore.cs

@@ -539,17 +539,11 @@ internal sealed unsafe partial class JpegEncoderCore : IImageEncoderInternals
     /// <param name="buffer">Temporary buffer.</param>
     private void WriteProfiles(ImageMetadata metadata, Span<byte> buffer)
     {
-        if (metadata is null)
-        {
-            return;
-        }
-
         // For compatibility, place the profiles in the following order:
         // - APP1 EXIF
         // - APP1 XMP
         // - APP2 ICC
         // - APP13 IPTC
-        metadata.SyncProfiles();
         this.WriteExifProfile(metadata.ExifProfile, buffer);
         this.WriteXmpProfile(metadata.XmpProfile, buffer);
         this.WriteIccProfile(metadata.IccProfile, buffer);

src/ImageSharp/Formats/Png/PngEncoderCore.cs

@@ -776,7 +776,6 @@ internal sealed class PngEncoderCore : IImageEncoderInternals, IDisposable
             return;
         }
 
-        meta.SyncProfiles();
         this.WriteChunk(stream, PngChunkType.Exif, meta.ExifProfile.ToByteArray());
     }
 

src/ImageSharp/Formats/Webp/Lossless/Vp8LEncoder.cs

@@ -241,8 +241,6 @@ internal class Vp8LEncoder : IDisposable
     {
         // Write bytes from the bit-writer buffer to the stream.
         ImageMetadata metadata = image.Metadata;
-        metadata.SyncProfiles();
-
         ExifProfile exifProfile = this.skipMetadata ? null : metadata.ExifProfile;
         XmpProfile xmpProfile = this.skipMetadata ? null : metadata.XmpProfile;
 

src/ImageSharp/Formats/Webp/Lossy/Vp8Encoder.cs

@@ -315,8 +315,6 @@ internal class Vp8Encoder : IDisposable
     {
         // Write bytes from the bitwriter buffer to the stream.
         ImageMetadata metadata = image.Metadata;
-        metadata.SyncProfiles();
-
         ExifProfile exifProfile = this.skipMetadata ? null : metadata.ExifProfile;
         XmpProfile xmpProfile = this.skipMetadata ? null : metadata.XmpProfile;
 

src/ImageSharp/Image.cs

@@ -157,6 +157,28 @@ public abstract partial class Image : IDisposable, IConfigurationProvider
     public abstract Image<TPixel2> CloneAs<TPixel2>(Configuration configuration)
         where TPixel2 : unmanaged, IPixel<TPixel2>;
 
+    /// <summary>
+    /// Synchronizes any embedded metadata profiles with the current image properties.
+    /// </summary>
+    public void SynchronizeMetadata()
+    {
+        this.Metadata.SynchronizeProfiles();
+        foreach (ImageFrame frame in this.Frames)
+        {
+            frame.Metadata.SynchronizeProfiles();
+        }
+    }
+
+    /// <summary>
+    /// Synchronizes any embedded metadata profiles with the current image properties.
+    /// </summary>
+    /// <param name="action">A synchronization action to run in addition to the default process.</param>
+    public void SynchronizeMetadata(Action<Image> action)
+    {
+        this.SynchronizeMetadata();
+        action(this);
+    }
+
     /// <summary>
     /// Update the size of the image after mutation.
     /// </summary>

src/ImageSharp/Metadata/ImageFrameMetadata.cs

@@ -131,4 +131,9 @@ public sealed class ImageFrameMetadata : IDeepCloneable<ImageFrameMetadata>
         where TFormatMetadata : class
         where TFormatFrameMetadata : class, IFormatFrameMetadata<TFormatFrameMetadata>
         => ((IDeepCloneable<TFormatFrameMetadata>)this.GetFormatMetadata(key)).DeepClone();
+
+    /// <summary>
+    /// Synchronizes the profiles with the current metadata.
+    /// </summary>
+    internal void SynchronizeProfiles() => this.ExifProfile?.Sync(this);
 }

src/ImageSharp/Metadata/ImageMetadata.cs

@@ -219,6 +219,11 @@ public sealed class ImageMetadata : IDeepCloneable<ImageMetadata>
     /// <inheritdoc/>
     public ImageMetadata DeepClone() => new(this);
 
+    /// <summary>
+    /// Synchronizes the profiles with the current metadata.
+    /// </summary>
+    internal void SynchronizeProfiles() => this.ExifProfile?.Sync(this);
+
     internal PixelTypeInfo GetDecodedPixelTypeInfo()
     {
         // None found. Check if we have a decoded format to convert from.
@@ -231,10 +236,4 @@ public sealed class ImageMetadata : IDeepCloneable<ImageMetadata>
         // This should never happen.
         return default;
     }
-
-    /// TODO: This should be called on save.
-    /// <summary>
-    /// Synchronizes the profiles with the current metadata.
-    /// </summary>
-    internal void SyncProfiles() => this.ExifProfile?.Sync(this);
 }

src/ImageSharp/Metadata/Profiles/Exif/ExifProfile.cs

@@ -298,6 +298,17 @@ public sealed class ExifProfile : IDeepCloneable<ExifProfile>
         this.SyncResolution(ExifTag.YResolution, metadata.VerticalResolution);
     }
 
+    /// <summary>
+    /// Synchronizes the profiles with the specified metadata.
+    /// </summary>
+    /// <param name="metadata">The metadata.</param>
+#pragma warning disable CA1822, RCS1163, IDE0060
+    internal void Sync(ImageFrameMetadata metadata)
+#pragma warning restore IDE0060, RCS1163, CA1822
+    {
+        // Nothing to do ....YET.
+    }
+
     private void SyncResolution(ExifTag<Rational> tag, double resolution)
     {
         if (!this.TryGetValue(tag, out IExifValue<Rational>? value))

tests/ImageSharp.Tests/Metadata/ImageMetadataTests.cs

@@ -16,9 +16,9 @@ public class ImageMetadataTests
     [Fact]
     public void ConstructorImageMetadata()
     {
-        var metaData = new ImageMetadata();
+        ImageMetadata metaData = new();
 
-        var exifProfile = new ExifProfile();
+        ExifProfile exifProfile = new();
 
         metaData.ExifProfile = exifProfile;
         metaData.HorizontalResolution = 4;
@@ -34,7 +34,7 @@ public class ImageMetadataTests
     [Fact]
     public void CloneIsDeep()
     {
-        var metaData = new ImageMetadata
+        ImageMetadata metaData = new()
         {
             ExifProfile = new ExifProfile(),
             HorizontalResolution = 4,
@@ -53,7 +53,7 @@ public class ImageMetadataTests
     [Fact]
     public void HorizontalResolution()
     {
-        var metaData = new ImageMetadata();
+        ImageMetadata metaData = new();
         Assert.Equal(96, metaData.HorizontalResolution);
 
         metaData.HorizontalResolution = 0;
@@ -69,7 +69,7 @@ public class ImageMetadataTests
     [Fact]
     public void VerticalResolution()
     {
-        var metaData = new ImageMetadata();
+        ImageMetadata metaData = new();
         Assert.Equal(96, metaData.VerticalResolution);
 
         metaData.VerticalResolution = 0;
@@ -85,20 +85,19 @@ public class ImageMetadataTests
     [Fact]
     public void SyncProfiles()
     {
-        var exifProfile = new ExifProfile();
+        ExifProfile exifProfile = new();
         exifProfile.SetValue(ExifTag.XResolution, new Rational(200));
         exifProfile.SetValue(ExifTag.YResolution, new Rational(300));
 
-        using (var image = new Image<Rgba32>(1, 1))
-        {
-            image.Metadata.ExifProfile = exifProfile;
-            image.Metadata.HorizontalResolution = 400;
-            image.Metadata.VerticalResolution = 500;
+        using Image<Rgba32> image = new(1, 1);
+        image.Metadata.ExifProfile = exifProfile;
+        image.Metadata.HorizontalResolution = 400;
+        image.Metadata.VerticalResolution = 500;
 
-            image.Metadata.SyncProfiles();
+        using MemoryStream memoryStream = new();
+        image.SaveAsBmp(memoryStream);
 
-            Assert.Equal(400, image.Metadata.ExifProfile.GetValue(ExifTag.XResolution).Value.ToDouble());
-            Assert.Equal(500, image.Metadata.ExifProfile.GetValue(ExifTag.YResolution).Value.ToDouble());
-        }
+        Assert.Equal(400, image.Metadata.ExifProfile.GetValue(ExifTag.XResolution).Value.ToDouble());
+        Assert.Equal(500, image.Metadata.ExifProfile.GetValue(ExifTag.YResolution).Value.ToDouble());
     }
 }