50 lines
1.4 KiB
C#
50 lines
1.4 KiB
C#
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using System;
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using System.IO;
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using System.Text;
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using System.Collections.Generic;
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namespace NAudio.Midi
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{
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/// <summary>
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/// Utility class for comparing MidiEvent objects
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/// </summary>
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public class MidiEventComparer : IComparer<MidiEvent>
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{
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#region IComparer<MidiEvent> Members
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/// <summary>
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/// Compares two MidiEvents
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/// Sorts by time, with EndTrack always sorted to the end
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/// </summary>
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public int Compare(MidiEvent x, MidiEvent y)
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{
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long xTime = x.AbsoluteTime;
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long yTime = y.AbsoluteTime;
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if (xTime == yTime)
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{
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// sort meta events before note events, except end track
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MetaEvent xMeta = x as MetaEvent;
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MetaEvent yMeta = y as MetaEvent;
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if (xMeta != null)
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{
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if (xMeta.MetaEventType == MetaEventType.EndTrack)
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xTime = Int64.MaxValue;
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else
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xTime = Int64.MinValue;
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}
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if (yMeta != null)
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{
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if (yMeta.MetaEventType == MetaEventType.EndTrack)
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yTime = Int64.MaxValue;
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else
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yTime = Int64.MinValue;
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}
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}
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return xTime.CompareTo(yTime);
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}
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#endregion
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}
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}
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