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44 lines
1.7 KiB
44 lines
1.7 KiB
// --------------------------------------------------------------------------------------------------------------------
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// <copyright file="PngChunk.cs" company="James South">
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// Copyright (c) James South and contributors.
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// Licensed under the Apache License, Version 2.0.
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// </copyright>
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// <summary>
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// Stores header information about a chunk.
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// </summary>
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// --------------------------------------------------------------------------------------------------------------------
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namespace ImageProcessor.Formats
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{
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/// <summary>
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/// Stores header information about a chunk.
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/// </summary>
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internal sealed class PngChunk
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{
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/// <summary>
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/// Gets or sets the length.
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/// An unsigned integer giving the number of bytes in the chunk's
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/// data field. The length counts only the data field, not itself,
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/// the chunk type code, or the CRC. Zero is a valid length
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/// </summary>
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public int Length { get; set; }
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/// <summary>
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/// Gets or sets the chunk type as string with 4 chars.
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/// </summary>
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public string Type { get; set; }
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/// <summary>
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/// Gets or sets the data bytes appropriate to the chunk type, if any.
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/// This field can be of zero length.
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/// </summary>
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public byte[] Data { get; set; }
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/// <summary>
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/// Gets or sets a CRC (Cyclic Redundancy Check) calculated on the preceding bytes in the chunk,
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/// including the chunk type code and chunk data fields, but not including the length field.
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/// The CRC is always present, even for chunks containing no data
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/// </summary>
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public uint Crc { get; set; }
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}
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}
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