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Improve LRC handling by merging duplicate timestamps #1858

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ema
2026-01-14 13:50:01 +08:00
parent 72aafc512a
commit 860da5a014
1 changed files with 29 additions and 5 deletions
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34
QuickLook.Plugin/QuickLook.Plugin.VideoViewer/LyricTrack/LrcHelper.cs
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@@ -113,14 +113,38 @@ public static class LrcHelper
return lrcList;
}
public static LrcLine GetNearestLrc(IEnumerable<LrcLine> lrcList, TimeSpan time)
/// <summary>
/// Returns the nearest <see cref="LrcLine"/> in the list whose timestamp is less than or equal to the specified time.
/// If multiple lines have the same timestamp, their lyrics are merged using the specified separator.
/// </summary>
/// <param name="lrcList">The collection of <see cref="LrcLine"/> objects to search.</param>
/// <param name="time">The target time to find the nearest lyric line for.</param>
/// <param name="separator">The separator used to join lyrics with duplicate timestamps. Default is a newline ("\n").</param>
/// <returns>The nearest <see cref="LrcLine"/> at or before the specified time, or <c>null</c> if none found.</returns>
public static LrcLine GetNearestLrc(IEnumerable<LrcLine> lrcList, TimeSpan time, string separator = "\n")
{
LrcLine line = lrcList
IEnumerable<LrcLine> lines = lrcList
.Where(x => x.LrcTime != null && x.LrcTime <= time)
.OrderByDescending(x => x.LrcTime)
.FirstOrDefault();
.OrderByDescending(x => x.LrcTime);
return line;
LrcLine first = lines.FirstOrDefault();
if (first is not null)
{
LrcLine[] mergingLines = [.. lines.Where(x => x.LrcTime == first.LrcTime)];
// If any duplicate timestamps exist, merge them
if (mergingLines.Length > 1)
{
// Create a new LrcLine can keep original ones unchanged
return new LrcLine(
first.LrcTime,
string.Join(separator, lines.Where(x => x.LrcTime == first.LrcTime).Select(x => x.LrcText))
);
}
}
return first;
}
/// <summary>