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62 lines
2.4 KiB
62 lines
2.4 KiB
// <copyright file="PngHeader.cs" company="James Jackson-South">
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// Copyright (c) James Jackson-South and contributors.
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// Licensed under the Apache License, Version 2.0.
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// </copyright>
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namespace ImageSharp.Formats
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{
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/// <summary>
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/// Represents the png header chunk.
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/// </summary>
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public sealed class PngHeader
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{
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/// <summary>
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/// Gets or sets the dimension in x-direction of the image in pixels.
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/// </summary>
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public int Width { get; set; }
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/// <summary>
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/// Gets or sets the dimension in y-direction of the image in pixels.
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/// </summary>
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public int Height { get; set; }
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/// <summary>
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/// Gets or sets the bit depth.
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/// Bit depth is a single-byte integer giving the number of bits per sample
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/// or per palette index (not per pixel). Valid values are 1, 2, 4, 8, and 16,
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/// although not all values are allowed for all color types.
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/// </summary>
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public byte BitDepth { get; set; }
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/// <summary>
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/// Gets or sets the color type.
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/// Color type is a integer that describes the interpretation of the
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/// image data. Color type codes represent sums of the following values:
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/// 1 (palette used), 2 (color used), and 4 (alpha channel used).
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/// </summary>
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public byte ColorType { get; set; }
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/// <summary>
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/// Gets or sets the compression method.
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/// Indicates the method used to compress the image data. At present,
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/// only compression method 0 (deflate/inflate compression with a sliding
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/// window of at most 32768 bytes) is defined.
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/// </summary>
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public byte CompressionMethod { get; set; }
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/// <summary>
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/// Gets or sets the preprocessing method.
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/// Indicates the preprocessing method applied to the image
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/// data before compression. At present, only filter method 0
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/// (adaptive filtering with five basic filter types) is defined.
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/// </summary>
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public byte FilterMethod { get; set; }
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/// <summary>
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/// Gets or sets the transmission order.
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/// Indicates the transmission order of the image data.
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/// Two values are currently defined: 0 (no interlace) or 1 (Adam7 interlace).
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/// </summary>
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public PngInterlaceMode InterlaceMethod { get; set; }
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}
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}
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