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94 lines
3.1 KiB
C#
94 lines
3.1 KiB
C#
using System.IO;
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using System.Linq;
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/// <remarks>
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/// Information sourced from http://web.archive.org/web/20070221154246/http://www.goldenhawk.com/download/cdrwin.pdf
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/// </remarks>
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namespace MPF.CueSheets
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{
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/// <summary>
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/// Represents PREGAP information of a track
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/// </summary>
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public class PreGap
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{
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/// <summary>
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/// Length of PREGAP in minutes
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/// </summary>
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public int Minutes { get; set; }
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/// <summary>
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/// Length of PREGAP in seconds
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/// </summary>
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/// <remarks>There are 60 seconds in a minute</remarks>
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public int Seconds { get; set; }
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/// <summary>
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/// Length of PREGAP in frames.
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/// </summary>
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/// <remarks>There are 75 frames per second</remarks>
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public int Frames { get; set; }
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/// <summary>
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/// Create an empty PREGAP
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/// </summary>
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public PreGap()
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{
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}
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/// <summary>
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/// Create a PREGAP from a mm:ss:ff length
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/// </summary>
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/// <param name="length">String to get length information from</param>
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public PreGap(string length)
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{
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// Ignore empty lines
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if (string.IsNullOrWhiteSpace(length))
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return; // TODO: Make this throw an exception
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// Ignore lines that don't contain the correct information
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if (length.Length != 8 || length.Count(c => c == ':') != 2)
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return; // TODO: Make this throw an exception
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// Split the line
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string[] splitLength = length.Split(':');
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if (splitLength.Length != 3)
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return; // TODO: Make this throw an exception
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// Parse the lengths
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int[] lengthSegments = new int[3];
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// Minutes
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if (!int.TryParse(splitLength[0], out lengthSegments[0]))
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return; // TODO: Make this throw an exception
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else if (lengthSegments[0] < 0)
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return; // TODO: Make this throw an exception
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// Seconds
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if (!int.TryParse(splitLength[1], out lengthSegments[1]))
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return; // TODO: Make this throw an exception
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else if (lengthSegments[1] < 0 || lengthSegments[1] > 60)
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return; // TODO: Make this throw an exception
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// Frames
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if (!int.TryParse(splitLength[2], out lengthSegments[2]))
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return; // TODO: Make this throw an exception
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else if (lengthSegments[2] < 0 || lengthSegments[2] > 75)
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return; // TODO: Make this throw an exception
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// Set the values
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this.Minutes = lengthSegments[0];
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this.Seconds = lengthSegments[1];
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this.Frames = lengthSegments[2];
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}
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/// <summary>
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/// Write the PREGAP out to a stream
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/// </summary>
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/// <param name="sw">StreamWriter to write to</param>
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public void Write(StreamWriter sw)
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{
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sw.WriteLine($" PREGAP {this.Minutes:D2}:{this.Seconds:D2}:{this.Frames:D2}");
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}
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}
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}
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