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97 lines
4.0 KiB
97 lines
4.0 KiB
// Copyright (c) Six Labors and contributors.
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// Licensed under the Apache License, Version 2.0.
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using SixLabors.ImageSharp.Formats;
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using SixLabors.ImageSharp.Memory;
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using SixLabors.ImageSharp.PixelFormats;
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using SixLabors.Primitives;
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namespace SixLabors.ImageSharp.Advanced
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{
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/// <summary>
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/// Extension methods over Image{TPixel}
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/// </summary>
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public static partial class ImageExtensions
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{
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/// <summary>
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/// Gets the representation of the pixels as an area of contiguous memory in the given pixel format.
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/// </summary>
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/// <typeparam name="TPixel">The type of the pixel.</typeparam>
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/// <param name="source">The source.</param>
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/// <returns>The <see cref="Span{TPixel}"/></returns>
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public static Span<TPixel> GetPixelSpan<TPixel>(this ImageFrame<TPixel> source)
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where TPixel : struct, IPixel<TPixel>
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=> GetSpan(source);
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/// <summary>
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/// Gets a <see cref="Span{TPixal}"/> representing the row 'y' beginning from the the first pixel on that row.
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/// </summary>
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/// <typeparam name="TPixel">The type of the pixel.</typeparam>
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/// <param name="source">The source.</param>
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/// <param name="row">The row.</param>
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/// <returns>The <see cref="Span{TPixel}"/></returns>
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public static Span<TPixel> GetPixelRowSpan<TPixel>(this ImageFrame<TPixel> source, int row)
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where TPixel : struct, IPixel<TPixel>
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=> GetSpan(source, row);
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/// <summary>
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/// Gets the span.
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/// </summary>
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/// <typeparam name="TPixel">The type of the pixel.</typeparam>
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/// <param name="source">The source.</param>
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/// <returns>The span retuned from Pixel source</returns>
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private static Span<TPixel> GetSpan<TPixel>(IPixelSource<TPixel> source)
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where TPixel : struct, IPixel<TPixel>
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=> source.PixelBuffer.Span;
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/// <summary>
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/// Gets the span.
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/// </summary>
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/// <typeparam name="TPixel">The type of the pixel.</typeparam>
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/// <param name="source">The source.</param>
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/// <param name="row">The row.</param>
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/// <returns>
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/// The span retuned from Pixel source
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/// </returns>
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private static Span<TPixel> GetSpan<TPixel>(IPixelSource<TPixel> source, int row)
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where TPixel : struct, IPixel<TPixel>
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=> GetSpan(source.PixelBuffer, row);
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/// <summary>
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/// Gets the span.
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/// </summary>
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/// <typeparam name="TPixel">The type of the pixel.</typeparam>
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/// <param name="source">The source.</param>
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/// <param name="row">The row.</param>
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/// <returns>
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/// The span retuned from Pixel source
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/// </returns>
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private static Span<TPixel> GetSpan<TPixel>(Buffer2D<TPixel> source, int row)
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where TPixel : struct, IPixel<TPixel>
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=> source.Span.Slice(row * source.Width, source.Width);
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/// <summary>
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/// Gets the bounds of the image.
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/// </summary>
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/// <typeparam name="TPixel">The Pixel format.</typeparam>
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/// <param name="source">The source image</param>
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/// <returns>Returns the bounds of the image</returns>
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public static Configuration Configuration<TPixel>(this ImageFrame<TPixel> source)
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where TPixel : struct, IPixel<TPixel>
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=> source?.Parent?.ImageConfiguration ?? SixLabors.ImageSharp.Configuration.Default;
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/// <summary>
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/// Gets the bounds of the image.
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/// </summary>
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/// <typeparam name="TPixel">The Pixel format.</typeparam>
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/// <param name="source">The source image</param>
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/// <returns>Returns the bounds of the image</returns>
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public static Configuration Configuration<TPixel>(this Image<TPixel> source)
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where TPixel : struct, IPixel<TPixel>
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=> source?.ImageConfiguration ?? SixLabors.ImageSharp.Configuration.Default;
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}
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}
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