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53 lines
2.5 KiB
53 lines
2.5 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.Runtime.InteropServices;
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using SixLabors.ImageSharp.Advanced;
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using SixLabors.ImageSharp.Memory;
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using SixLabors.ImageSharp.PixelFormats;
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namespace SixLabors.ImageSharp
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{
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/// <content>
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/// Contains methods for loading raw pixel data.
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/// </content>
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public partial class ImageFrame
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{
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/// <summary>
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/// Create a new instance of the <see cref="Image{TPixel}"/> class from the given byte array in <typeparamref name="TPixel"/> format.
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/// </summary>
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/// <param name="configuration">The configuration which allows altering default behaviour or extending the library.</param>
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/// <param name="data">The byte array containing image data.</param>
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/// <param name="width">The width of the final image.</param>
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/// <param name="height">The height of the final image.</param>
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/// <typeparam name="TPixel">The pixel format.</typeparam>
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/// <returns>A new <see cref="Image{TPixel}"/>.</returns>
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internal static ImageFrame<TPixel> LoadPixelData<TPixel>(Configuration configuration, ReadOnlySpan<byte> data, int width, int height)
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where TPixel : unmanaged, IPixel<TPixel>
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=> LoadPixelData(configuration, MemoryMarshal.Cast<byte, TPixel>(data), width, height);
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/// <summary>
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/// Create a new instance of the <see cref="Image{TPixel}"/> class from the raw <typeparamref name="TPixel"/> data.
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/// </summary>
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/// <param name="configuration">The configuration which allows altering default behaviour or extending the library.</param>
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/// <param name="data">The Span containing the image Pixel data.</param>
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/// <param name="width">The width of the final image.</param>
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/// <param name="height">The height of the final image.</param>
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/// <typeparam name="TPixel">The pixel format.</typeparam>
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/// <returns>A new <see cref="Image{TPixel}"/>.</returns>
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internal static ImageFrame<TPixel> LoadPixelData<TPixel>(Configuration configuration, ReadOnlySpan<TPixel> data, int width, int height)
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where TPixel : unmanaged, IPixel<TPixel>
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{
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int count = width * height;
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Guard.MustBeGreaterThanOrEqualTo(data.Length, count, nameof(data));
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var image = new ImageFrame<TPixel>(configuration, width, height);
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data = data.Slice(0, count);
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data.CopyTo(image.PixelBuffer.FastMemoryGroup);
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return image;
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}
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}
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}
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