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83 lines
2.3 KiB
83 lines
2.3 KiB
// <copyright file="GifConstants.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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/// Constants that define specific points within a gif.
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/// </summary>
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internal sealed class GifConstants
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{
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/// <summary>
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/// The file type.
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/// </summary>
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public const string FileType = "GIF";
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/// <summary>
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/// The file version.
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/// </summary>
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public const string FileVersion = "89a";
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/// <summary>
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/// The extension block introducer <value>!</value>.
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/// </summary>
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public const byte ExtensionIntroducer = 0x21;
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/// <summary>
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/// The graphic control label.
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/// </summary>
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public const byte GraphicControlLabel = 0xF9;
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/// <summary>
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/// The application extension label.
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/// </summary>
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public const byte ApplicationExtensionLabel = 0xFF;
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/// <summary>
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/// The application identification.
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/// </summary>
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public const string ApplicationIdentification = "NETSCAPE2.0";
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/// <summary>
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/// The application block size.
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/// </summary>
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public const byte ApplicationBlockSize = 0x0b;
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/// <summary>
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/// The comment label.
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/// </summary>
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public const byte CommentLabel = 0xFE;
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/// <summary>
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/// The maximum comment length.
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/// </summary>
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public const int MaxCommentLength = 1024 * 8;
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/// <summary>
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/// The image descriptor label <value>,</value>.
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/// </summary>
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public const byte ImageDescriptorLabel = 0x2C;
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/// <summary>
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/// The plain text label.
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/// </summary>
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public const byte PlainTextLabel = 0x01;
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/// <summary>
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/// The image label introducer <value>,</value>.
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/// </summary>
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public const byte ImageLabel = 0x2C;
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/// <summary>
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/// The terminator.
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/// </summary>
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public const byte Terminator = 0;
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/// <summary>
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/// The end introducer trailer <value>;</value>.
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/// </summary>
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public const byte EndIntroducer = 0x3B;
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}
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}
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