exlusivly use frames to access pixel spans

src/ImageSharp/Advanced/IPixelSource.cs

@@ -0,0 +1,24 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
+using SixLabors.ImageSharp.Advanced;
+using SixLabors.ImageSharp.Memory;
+using SixLabors.ImageSharp.MetaData;
+using SixLabors.ImageSharp.PixelFormats;
+
+namespace SixLabors.ImageSharp.Advanced
+{
+    /// <summary>
+    /// Encapsulates the basic properties and methods required to manipulate images.
+    /// </summary>
+    /// <typeparam name="TPixel">The type of the pixel.</typeparam>
+    internal interface IPixelSource<TPixel>
+        where TPixel : struct, IPixel<TPixel>
+    {
+        /// <summary>
+        /// Gets the pixel buffer.
+        /// </summary>
+        Buffer2D<TPixel> PixelBuffer { get; }
+    }
+}

src/ImageSharp/Advanced/ImageExtensions.cs

@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.IO;
 using System.Text;
 using SixLabors.ImageSharp.Formats;
+using SixLabors.ImageSharp.Memory;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.Primitives;
 
@@ -26,16 +27,6 @@ namespace SixLabors.ImageSharp.Advanced
             where TPixel : struct, IPixel<TPixel>
             => GetSpan(source);
 
-        /// <summary>
-        /// Gets the representation of the pixels as an area of contiguous memory in the given pixel format.
-        /// </summary>
-        /// <typeparam name="TPixel">The type of the pixel.</typeparam>
-        /// <param name="source">The source.</param>
-        /// <returns>The <see cref="Span{TPixel}"/></returns>
-        public static Span<TPixel> GetPixelSpan<TPixel>(this Image<TPixel> source)
-            where TPixel : struct, IPixel<TPixel>
-            => GetSpan(source);
-
         /// <summary>
         /// Gets a <see cref="Span{TPixal}"/> representing the row 'y' beginning from the the first pixel on that row.
         /// </summary>
@@ -48,25 +39,27 @@ namespace SixLabors.ImageSharp.Advanced
             => GetSpan(source, row);
 
         /// <summary>
-        /// Gets a <see cref="Span{TPixal}"/> representing the row 'y' beginning from the the first pixel on that row.
+        /// Gets the span.
         /// </summary>
         /// <typeparam name="TPixel">The type of the pixel.</typeparam>
         /// <param name="source">The source.</param>
-        /// <param name="row">The row.</param>
-        /// <returns>The <see cref="Span{TPixel}"/></returns>
-        public static Span<TPixel> GetPixelRowSpan<TPixel>(this Image<TPixel> source, int row)
+        /// <returns>The span retuned from Pixel source</returns>
+        private static Span<TPixel> GetSpan<TPixel>(IPixelSource<TPixel> source)
             where TPixel : struct, IPixel<TPixel>
-            => GetSpan(source, row);
+            => source.PixelBuffer.Span;
 
         /// <summary>
         /// Gets the span.
         /// </summary>
         /// <typeparam name="TPixel">The type of the pixel.</typeparam>
         /// <param name="source">The source.</param>
-        /// <returns>The span retuned from Pixel source</returns>
-        private static Span<TPixel> GetSpan<TPixel>(IImageFrame<TPixel> source)
+        /// <param name="row">The row.</param>
+        /// <returns>
+        /// The span retuned from Pixel source
+        /// </returns>
+        private static Span<TPixel> GetSpan<TPixel>(IPixelSource<TPixel> source, int row)
             where TPixel : struct, IPixel<TPixel>
-            => source.PixelBuffer.Span;
+            => GetSpan(source.PixelBuffer, row);
 
         /// <summary>
         /// Gets the span.
@@ -77,9 +70,9 @@ namespace SixLabors.ImageSharp.Advanced
         /// <returns>
         /// The span retuned from Pixel source
         /// </returns>
-        private static Span<TPixel> GetSpan<TPixel>(IImageFrame<TPixel> source, int row)
+        private static Span<TPixel> GetSpan<TPixel>(Buffer2D<TPixel> source, int row)
             where TPixel : struct, IPixel<TPixel>
-            => source.PixelBuffer.Span.Slice(row * source.Width, source.Width);
+            => source.Span.Slice(row * source.Width, source.Width);
 
         /// <summary>
         /// Gets the bounds of the image.

src/ImageSharp/Formats/Bmp/BmpEncoderCore.cs

@@ -73,7 +73,7 @@ namespace SixLabors.ImageSharp.Formats.Bmp
 
             WriteHeader(writer, fileHeader);
             this.WriteInfo(writer, infoHeader);
-            this.WriteImage(writer, image);
+            this.WriteImage(writer, image.Frames.RootFrame);
 
             writer.Flush();
         }
@@ -127,7 +127,7 @@ namespace SixLabors.ImageSharp.Formats.Bmp
         /// <param name="image">
         /// The <see cref="ImageFrame{TPixel}"/> containing pixel data.
         /// </param>
-        private void WriteImage<TPixel>(EndianBinaryWriter writer, IImageFrame<TPixel> image)
+        private void WriteImage<TPixel>(EndianBinaryWriter writer, ImageFrame<TPixel> image)
             where TPixel : struct, IPixel<TPixel>
         {
             using (PixelAccessor<TPixel> pixels = image.Lock())

src/ImageSharp/Formats/Gif/GifDecoderCore.cs

@@ -378,7 +378,7 @@ namespace SixLabors.ImageSharp.Formats.Gif
 
                 this.SetFrameMetaData(this.metaData);
 
-                image = (ImageFrame<TPixel>)this.image;
+                image = this.image.Frames.RootFrame;
             }
             else
             {
@@ -471,7 +471,7 @@ namespace SixLabors.ImageSharp.Formats.Gif
                 return;
             }
 
-            this.previousFrame = currentFrame == null ? this.image : currentFrame;
+            this.previousFrame = currentFrame == null ? this.image.Frames.RootFrame : currentFrame;
 
             if (this.graphicsControlExtension != null &&
                 this.graphicsControlExtension.DisposalMethod == DisposalMethod.RestoreToBackground)

src/ImageSharp/Formats/Gif/GifEncoderCore.cs

@@ -103,7 +103,7 @@ namespace SixLabors.ImageSharp.Formats.Gif
             ditheredQuantizer.Dither = !this.hasFrames;
 
             // Quantize the image returning a palette.
-            QuantizedImage<TPixel> quantized = ditheredQuantizer.Quantize(image, paletteSize);
+            QuantizedImage<TPixel> quantized = ditheredQuantizer.Quantize(image.Frames.RootFrame, paletteSize);
 
             int index = this.GetTransparentIndex(quantized);
 

src/ImageSharp/Formats/Jpeg/Common/Decoder/JpegImagePostProcessor.cs

@@ -98,7 +98,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Common.Decoder
         /// </summary>
         /// <typeparam name="TPixel">The pixel type</typeparam>
         /// <param name="destination">The destination image</param>
-        public void PostProcess<TPixel>(Image<TPixel> destination)
+        public void PostProcess<TPixel>(ImageFrame<TPixel> destination)
             where TPixel : struct, IPixel<TPixel>
         {
             this.PixelRowCounter = 0;
@@ -119,7 +119,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Common.Decoder
         /// </summary>
         /// <typeparam name="TPixel">The pixel type</typeparam>
         /// <param name="destination">The destination image.</param>
-        public void DoPostProcessorStep<TPixel>(Image<TPixel> destination)
+        public void DoPostProcessorStep<TPixel>(ImageFrame<TPixel> destination)
             where TPixel : struct, IPixel<TPixel>
         {
             foreach (JpegComponentPostProcessor cpp in this.ComponentProcessors)
@@ -137,7 +137,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Common.Decoder
         /// </summary>
         /// <typeparam name="TPixel">The pixel type</typeparam>
         /// <param name="destination">The destination image</param>
-        private void ConvertColorsInto<TPixel>(Image<TPixel> destination)
+        private void ConvertColorsInto<TPixel>(ImageFrame<TPixel> destination)
             where TPixel : struct, IPixel<TPixel>
         {
             int maxY = Math.Min(destination.Height, this.PixelRowCounter + PixelRowsPerStep);

src/ImageSharp/Formats/Jpeg/GolangPort/OrigJpegDecoderCore.cs

@@ -815,7 +815,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.GolangPort
             using (var postProcessor = new JpegImagePostProcessor(this))
             {
                 var image = new Image<TPixel>(this.configuration, this.ImageWidth, this.ImageHeight, this.MetaData);
-                postProcessor.PostProcess(image);
+                postProcessor.PostProcess(image.Frames.RootFrame);
                 return image;
             }
         }

src/ImageSharp/Formats/Jpeg/PdfJsPort/PdfJsJpegDecoderCore.cs

@@ -159,7 +159,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.PdfJsPort
             this.QuantizeAndInverseAllComponents();
 
             var image = new Image<TPixel>(this.configuration, this.ImageWidth, this.ImageHeight, metadata);
-            this.FillPixelData(image);
+            this.FillPixelData(image.Frames.RootFrame);
             this.AssignResolution(image);
             return image;
         }
@@ -326,7 +326,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.PdfJsPort
         /// </summary>
         /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="image">The image</param>
-        private void FillPixelData<TPixel>(Image<TPixel> image)
+        private void FillPixelData<TPixel>(ImageFrame<TPixel> image)
             where TPixel : struct, IPixel<TPixel>
         {
             if (this.NumberOfComponents > 4)
@@ -856,7 +856,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.PdfJsPort
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void FillGrayScaleImage<TPixel>(Image<TPixel> image)
+        private void FillGrayScaleImage<TPixel>(ImageFrame<TPixel> image)
             where TPixel : struct, IPixel<TPixel>
         {
             for (int y = 0; y < image.Height; y++)
@@ -875,7 +875,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.PdfJsPort
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void FillYCbCrImage<TPixel>(Image<TPixel> image)
+        private void FillYCbCrImage<TPixel>(ImageFrame<TPixel> image)
             where TPixel : struct, IPixel<TPixel>
         {
             for (int y = 0; y < image.Height; y++)
@@ -894,7 +894,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.PdfJsPort
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void FillYcckImage<TPixel>(Image<TPixel> image)
+        private void FillYcckImage<TPixel>(ImageFrame<TPixel> image)
             where TPixel : struct, IPixel<TPixel>
         {
             for (int y = 0; y < image.Height; y++)
@@ -915,7 +915,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.PdfJsPort
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void FillCmykImage<TPixel>(Image<TPixel> image)
+        private void FillCmykImage<TPixel>(ImageFrame<TPixel> image)
             where TPixel : struct, IPixel<TPixel>
         {
             for (int y = 0; y < image.Height; y++)
@@ -941,7 +941,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.PdfJsPort
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void FillRgbImage<TPixel>(Image<TPixel> image)
+        private void FillRgbImage<TPixel>(ImageFrame<TPixel> image)
             where TPixel : struct, IPixel<TPixel>
         {
             for (int y = 0; y < image.Height; y++)

src/ImageSharp/Formats/Png/PngDecoderCore.cs

@@ -236,7 +236,7 @@ namespace SixLabors.ImageSharp.Formats.Png
                                     }
 
                                     deframeStream.AllocateNewBytes(currentChunk.Length);
-                                    this.ReadScanlines(deframeStream.CompressedStream, image);
+                                    this.ReadScanlines(deframeStream.CompressedStream, image.Frames.RootFrame);
                                     stream.Read(this.crcBuffer, 0, 4);
                                     break;
                                 case PngChunkTypes.Palette:
@@ -442,7 +442,7 @@ namespace SixLabors.ImageSharp.Formats.Png
         /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="dataStream">The <see cref="MemoryStream"/> containing data.</param>
         /// <param name="image"> The pixel data.</param>
-        private void ReadScanlines<TPixel>(Stream dataStream, Image<TPixel> image)
+        private void ReadScanlines<TPixel>(Stream dataStream, ImageFrame<TPixel> image)
             where TPixel : struct, IPixel<TPixel>
         {
             if (this.header.InterlaceMethod == PngInterlaceMode.Adam7)
@@ -461,7 +461,7 @@ namespace SixLabors.ImageSharp.Formats.Png
         /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="compressedStream">The compressed pixel data stream.</param>
         /// <param name="image">The image to decode to.</param>
-        private void DecodePixelData<TPixel>(Stream compressedStream, Image<TPixel> image)
+        private void DecodePixelData<TPixel>(Stream compressedStream, ImageFrame<TPixel> image)
             where TPixel : struct, IPixel<TPixel>
         {
             while (this.currentRow < this.header.Height)
@@ -519,7 +519,7 @@ namespace SixLabors.ImageSharp.Formats.Png
         /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="compressedStream">The compressed pixel data stream.</param>
         /// <param name="image">The current image.</param>
-        private void DecodeInterlacedPixelData<TPixel>(Stream compressedStream, Image<TPixel> image)
+        private void DecodeInterlacedPixelData<TPixel>(Stream compressedStream, ImageFrame<TPixel> image)
             where TPixel : struct, IPixel<TPixel>
         {
             while (true)
@@ -609,7 +609,7 @@ namespace SixLabors.ImageSharp.Formats.Png
         /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="defilteredScanline">The de-filtered scanline</param>
         /// <param name="pixels">The image</param>
-        private void ProcessDefilteredScanline<TPixel>(byte[] defilteredScanline, Image<TPixel> pixels)
+        private void ProcessDefilteredScanline<TPixel>(byte[] defilteredScanline, ImageFrame<TPixel> pixels)
             where TPixel : struct, IPixel<TPixel>
         {
             var color = default(TPixel);

src/ImageSharp/Formats/Png/PngEncoderCore.cs

@@ -233,12 +233,12 @@ namespace SixLabors.ImageSharp.Formats.Png
             // Collect the indexed pixel data
             if (this.pngColorType == PngColorType.Palette)
             {
-                this.CollectIndexedBytes<TPixel>(image, stream, header);
+                this.CollectIndexedBytes<TPixel>(image.Frames.RootFrame, stream, header);
             }
 
             this.WritePhysicalChunk(stream, image);
             this.WriteGammaChunk(stream);
-            this.WriteDataChunks(image, stream);
+            this.WriteDataChunks(image.Frames.RootFrame, stream);
             this.WriteEndChunk(stream);
             stream.Flush();
         }
@@ -649,7 +649,7 @@ namespace SixLabors.ImageSharp.Formats.Png
         /// <typeparam name="TPixel">The pixel format.</typeparam>
         /// <param name="pixels">The image.</param>
         /// <param name="stream">The stream.</param>
-        private void WriteDataChunks<TPixel>(Image<TPixel> pixels, Stream stream)
+        private void WriteDataChunks<TPixel>(ImageFrame<TPixel> pixels, Stream stream)
             where TPixel : struct, IPixel<TPixel>
         {
             this.bytesPerScanline = this.width * this.bytesPerPixel;

src/ImageSharp/Image/IImageFrame.cs

@@ -9,19 +9,6 @@ using SixLabors.ImageSharp.PixelFormats;
 
 namespace SixLabors.ImageSharp
 {
-    /// <summary>
-    /// Encapsulates the basic properties and methods required to manipulate images.
-    /// </summary>
-    /// <typeparam name="TPixel">The type of the pixel.</typeparam>
-    internal interface IImageFrame<TPixel> : IImageFrame
-        where TPixel : struct, IPixel<TPixel>
-    {
-        /// <summary>
-        /// Gets the pixel buffer.
-        /// </summary>
-        Buffer2D<TPixel> PixelBuffer { get; }
-    }
-
     /// <summary>
     /// Encapsulates the basic properties and methods required to manipulate images.
     /// </summary>

src/ImageSharp/Image/Image.LoadPixelData.cs

@@ -70,7 +70,7 @@ namespace SixLabors.ImageSharp
             Guard.MustBeGreaterThanOrEqualTo(data.Length, count, nameof(data));
 
             var image = new Image<TPixel>(config, width, height);
-            SpanHelper.Copy(data, image.GetPixelSpan(), count);
+            SpanHelper.Copy(data, image.Frames.RootFrame.GetPixelSpan(), count);
 
             return image;
         }

src/ImageSharp/Image/ImageExtensions.cs

@@ -158,7 +158,7 @@ namespace SixLabors.ImageSharp
         /// <exception cref="System.ArgumentNullException">Thrown if the stream is null.</exception>
         public static byte[] SavePixelData<TPixel>(this Image<TPixel> source)
             where TPixel : struct, IPixel<TPixel>
-         => source.GetPixelSpan().AsBytes().ToArray();
+         => source.Frames.RootFrame.SavePixelData();
 
         /// <summary>
         /// Saves the raw image to the given bytes.
@@ -169,7 +169,7 @@ namespace SixLabors.ImageSharp
         /// <exception cref="System.ArgumentNullException">Thrown if the stream is null.</exception>
         public static void SavePixelData<TPixel>(this Image<TPixel> source, byte[] buffer)
             where TPixel : struct, IPixel<TPixel>
-            => SavePixelData(source, new Span<byte>(buffer));
+            => source.Frames.RootFrame.SavePixelData(buffer);
 
         /// <summary>
         /// Saves the raw image to the given bytes.
@@ -180,12 +180,7 @@ namespace SixLabors.ImageSharp
         /// <exception cref="System.ArgumentNullException">Thrown if the stream is null.</exception>
         public static void SavePixelData<TPixel>(this Image<TPixel> source, Span<byte> buffer)
             where TPixel : struct, IPixel<TPixel>
-        {
-            Span<byte> byteBuffer = source.GetPixelSpan().AsBytes();
-            Guard.MustBeGreaterThanOrEqualTo(buffer.Length, byteBuffer.Length, nameof(buffer));
-
-            byteBuffer.CopyTo(buffer);
-        }
+            => source.Frames.RootFrame.SavePixelData(buffer);
 
         /// <summary>
         /// Returns a Base64 encoded string from the given image.

src/ImageSharp/Image/ImageFrame{TPixel}.cs

@@ -17,7 +17,7 @@ namespace SixLabors.ImageSharp
     /// Represents a single frame in a animation.
     /// </summary>
     /// <typeparam name="TPixel">The pixel format.</typeparam>
-    public sealed class ImageFrame<TPixel> : IImageFrame<TPixel>
+    public sealed class ImageFrame<TPixel> : IImageFrame, IPixelSource<TPixel>
         where TPixel : struct, IPixel<TPixel>
     {
         /// <summary>
@@ -65,7 +65,7 @@ namespace SixLabors.ImageSharp
         }
 
         /// <inheritdoc/>
-        Buffer2D<TPixel> IImageFrame<TPixel>.PixelBuffer => this.pixelBuffer;
+        Buffer2D<TPixel> IPixelSource<TPixel>.PixelBuffer => this.pixelBuffer;
 
         /// <inheritdoc/>
         public int Width => this.pixelBuffer.Width;

src/ImageSharp/Image/Image{TPixel}.cs

@@ -1,10 +1,11 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
-
+using SixLabors.ImageSharp.Advanced;
 using SixLabors.ImageSharp.Formats;
 using SixLabors.ImageSharp.Memory;
 using SixLabors.ImageSharp.MetaData;
@@ -16,7 +17,7 @@ namespace SixLabors.ImageSharp
     /// Encapsulates an image, which consists of the pixel data for a graphics image and its attributes.
     /// </summary>
     /// <typeparam name="TPixel">The pixel format.</typeparam>
-    public sealed partial class Image<TPixel> : IImageFrame<TPixel>
+    public sealed partial class Image<TPixel> : IDisposable
         where TPixel : struct, IPixel<TPixel>
     {
         /// <summary>
@@ -100,12 +101,12 @@ namespace SixLabors.ImageSharp
         /// <summary>
         /// Gets the width.
         /// </summary>
-        public int Width => this.RootFrame?.Width ?? 0;
+        public int Width => this.Frames.RootFrame.Width;
 
         /// <summary>
         /// Gets the height.
         /// </summary>
-        public int Height => this.RootFrame?.Height ?? 0;
+        public int Height => this.Frames.RootFrame.Height;
 
         /// <summary>
         /// Gets the meta data of the image.
@@ -120,13 +121,7 @@ namespace SixLabors.ImageSharp
         /// <summary>
         /// Gets the root frame.
         /// </summary>
-        private IImageFrame<TPixel> RootFrame => this.Frames?.RootFrame;
-
-        /// <inheritdoc/>
-        Buffer2D<TPixel> IImageFrame<TPixel>.PixelBuffer => this.RootFrame.PixelBuffer;
-
-        /// <inheritdoc/>
-        ImageFrameMetaData IImageFrame.MetaData => this.RootFrame.MetaData;
+        private IPixelSource<TPixel> PixelSource => this.Frames?.RootFrame;
 
         /// <summary>
         /// Gets or sets the pixel at the specified position.
@@ -136,9 +131,9 @@ namespace SixLabors.ImageSharp
         /// <returns>The <see typeparam="TPixel"/> at the specified position.</returns>
         public TPixel this[int x, int y]
         {
-            get => this.RootFrame.PixelBuffer[x, y];
+            get => this.PixelSource.PixelBuffer[x, y];
 
-            set => this.RootFrame.PixelBuffer[x, y] = value;
+            set => this.PixelSource.PixelBuffer[x, y] = value;
         }
 
         /// <summary>

src/ImageSharp/Image/PixelAccessorExtensions.cs

@@ -5,6 +5,7 @@ using System;
 using System.Diagnostics;
 using System.Runtime.CompilerServices;
 using System.Threading.Tasks;
+using SixLabors.ImageSharp.Advanced;
 using SixLabors.ImageSharp.Memory;
 using SixLabors.ImageSharp.PixelFormats;
 using Unsafe = System.Runtime.CompilerServices.Unsafe;
@@ -27,10 +28,27 @@ namespace SixLabors.ImageSharp
         /// <returns>
         /// The <see cref="PixelAccessor{TPixel}" />
         /// </returns>
-        internal static PixelAccessor<TPixel> Lock<TPixel>(this IImageFrame<TPixel> frame)
+        internal static PixelAccessor<TPixel> Lock<TPixel>(this IPixelSource<TPixel> frame)
         where TPixel : struct, IPixel<TPixel>
         {
             return new PixelAccessor<TPixel>(frame);
         }
+
+        /// <summary>
+        /// Locks the image providing access to the pixels.
+        /// <remarks>
+        /// It is imperative that the accessor is correctly disposed off after use.
+        /// </remarks>
+        /// </summary>
+        /// <typeparam name="TPixel">The type of the pixel.</typeparam>
+        /// <param name="image">The image.</param>
+        /// <returns>
+        /// The <see cref="PixelAccessor{TPixel}" />
+        /// </returns>
+        internal static PixelAccessor<TPixel> Lock<TPixel>(this Image<TPixel> image)
+        where TPixel : struct, IPixel<TPixel>
+        {
+            return image.Frames.RootFrame.Lock();
+        }
     }
 }

src/ImageSharp/Image/PixelAccessor{TPixel}.cs

@@ -4,7 +4,7 @@
 using System;
 using System.Diagnostics;
 using System.Runtime.CompilerServices;
-
+using SixLabors.ImageSharp.Advanced;
 using SixLabors.ImageSharp.Memory;
 using SixLabors.ImageSharp.PixelFormats;
 using Unsafe = System.Runtime.CompilerServices.Unsafe;
@@ -41,11 +41,11 @@ namespace SixLabors.ImageSharp
         /// Initializes a new instance of the <see cref="PixelAccessor{TPixel}"/> class.
         /// </summary>
         /// <param name="image">The image to provide pixel access for.</param>
-        public PixelAccessor(IImageFrame<TPixel> image)
+        public PixelAccessor(IPixelSource<TPixel> image)
         {
             Guard.NotNull(image, nameof(image));
-            Guard.MustBeGreaterThan(image.Width, 0, "image width");
-            Guard.MustBeGreaterThan(image.Height, 0, "image height");
+            Guard.MustBeGreaterThan(image.PixelBuffer.Width, 0, "image width");
+            Guard.MustBeGreaterThan(image.PixelBuffer.Height, 0, "image height");
 
             this.SetPixelBufferUnsafe(image.PixelBuffer, false);
         }

tests/ImageSharp.Benchmarks/Image/CopyPixels.cs

@@ -103,8 +103,8 @@ namespace SixLabors.ImageSharp.Benchmarks.Image
                     Configuration.Default.ParallelOptions,
                     y =>
                     {
-                        Span<Rgba32> sourceRow = source.GetPixelRowSpan(y);
-                        Span<Rgba32> targetRow = target.GetPixelRowSpan(y);
+                        Span<Rgba32> sourceRow = source.Frames.RootFrame.GetPixelRowSpan(y);
+                        Span<Rgba32> targetRow = target.Frames.RootFrame.GetPixelRowSpan(y);
 
                         for (int x = 0; x < source.Width; x++)
                         {

tests/ImageSharp.Tests/Formats/Jpg/JpegImagePostProcessorTests.cs

@@ -56,9 +56,9 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
             string imageFile = provider.SourceFileOrDescription;
             using (OrigJpegDecoderCore decoder = JpegFixture.ParseStream(imageFile))
             using (var pp = new JpegImagePostProcessor(decoder))
-            using (var image = new Image<Rgba32>(decoder.ImageWidth, decoder.ImageHeight))
+            using (var imageFrame = new ImageFrame<Rgba32>(decoder.ImageWidth, decoder.ImageHeight))
             {
-                pp.DoPostProcessorStep(image);
+                pp.DoPostProcessorStep(imageFrame);
 
                 JpegComponentPostProcessor[] cp = pp.ComponentProcessors;
 
@@ -80,7 +80,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
             using (var pp = new JpegImagePostProcessor(decoder))
             using (var image = new Image<Rgba32>(decoder.ImageWidth, decoder.ImageHeight))
             {
-                pp.PostProcess(image);
+                pp.PostProcess(image.Frames.RootFrame);
 
                 image.DebugSave(provider);
 

tests/ImageSharp.Tests/Image/ImageLoadTests.cs

@@ -326,7 +326,7 @@ namespace SixLabors.ImageSharp.Tests
 
             using (Image<Rgba32> img = image1Provider.GetImage())
             {
-                Assert.Equal(166036, img.GetPixelSpan().Length);
+                Assert.Equal(166036, img.Frames.RootFrame.GetPixelSpan().Length);
             }
         }
 

tests/ImageSharp.Tests/Processing/Processors/ColorMatrix/GrayscaleTest.cs

@@ -32,9 +32,10 @@ namespace SixLabors.ImageSharp.Tests.Processing.Processors.ColorMatrix
             {
                 image.Mutate(x => x.Grayscale(value));
                 byte[] data = new byte[3];
-                for (int i = 0; i < image.GetPixelSpan().Length; i++)
+                System.Span<TPixel> span = image.Frames.RootFrame.GetPixelSpan();
+                for (int i = 0; i < span.Length; i++)
                 {
-                    image.GetPixelSpan()[i].ToXyzBytes(data, 0);
+                    span[i].ToXyzBytes(data, 0);
                     Assert.Equal(data[0], data[1]);
                     Assert.Equal(data[1], data[2]);
                 }

tests/ImageSharp.Tests/TestUtilities/ReferenceCodecs/SystemDrawingBridge.cs

@@ -101,7 +101,7 @@ namespace SixLabors.ImageSharp.Tests.TestUtilities.ReferenceCodecs
                 var destPtr = (Argb32*)workBuffer.Pin();
                 for (int y = 0; y < h; y++)
                 {
-                    Span<TPixel> row = image.GetPixelRowSpan(y);
+                    Span<TPixel> row = image.Frames.RootFrame.GetPixelRowSpan(y);
 
                     byte* sourcePtr = sourcePtrBase + data.Stride * y;
 
@@ -143,7 +143,7 @@ namespace SixLabors.ImageSharp.Tests.TestUtilities.ReferenceCodecs
                 var destPtr = (Rgb24*)workBuffer.Pin();
                 for (int y = 0; y < h; y++)
                 {
-                    Span<TPixel> row = image.GetPixelRowSpan(y);
+                    Span<TPixel> row = image.Frames.RootFrame.GetPixelRowSpan(y);
 
                     byte* sourcePtr = sourcePtrBase + data.Stride * y;
 
@@ -176,7 +176,7 @@ namespace SixLabors.ImageSharp.Tests.TestUtilities.ReferenceCodecs
 
                 for (int y = 0; y < h; y++)
                 {
-                    Span<TPixel> row = image.GetPixelRowSpan(y);
+                    Span<TPixel> row = image.Frames.RootFrame.GetPixelRowSpan(y);
                     ToArgb32(row, workBuffer);
                     byte* destPtr = destPtrBase + data.Stride * y;
 

tests/ImageSharp.Tests/TestUtilities/TestImageExtensions.cs

@@ -196,7 +196,7 @@ namespace SixLabors.ImageSharp.Tests
         {
             var image = new Image<Rgba32>(buffer.Width, buffer.Height);
 
-            Span<Rgba32> pixels = image.GetPixelSpan();
+            Span<Rgba32> pixels = image.Frames.RootFrame.GetPixelSpan();
 
             for (int i = 0; i < buffer.Length; i++)
             {