Use SubtitleEdit to parse subtitles

MediaBrowser.MediaEncoding/Subtitles/SubtitleEditParser.cs

@@ -0,0 +1,45 @@
+#nullable enable
+
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using MediaBrowser.Common.Extensions;
+using MediaBrowser.Model.MediaInfo;
+using Nikse.SubtitleEdit.Core;
+
+namespace MediaBrowser.MediaEncoding.Subtitles
+{
+    /// <summary>
+    /// SubStation Alpha subtitle parser.
+    /// </summary>
+    /// <typeparam name="T">The <see cref="Nikse.SubtitleEdit.Core.SubtitleFormats.SubtitleFormat" />.</typeparam>
+    public abstract class SubtitleEditParser<T> : ISubtitleParser
+        where T : Nikse.SubtitleEdit.Core.SubtitleFormats.SubtitleFormat, new()
+    {
+        /// <inheritdoc />
+        public SubtitleTrackInfo Parse(Stream stream, CancellationToken cancellationToken)
+        {
+            var subtitle = new Subtitle();
+            var subRip = new T();
+            var lines = stream.ReadAllLines().ToList();
+            subRip.LoadSubtitle(subtitle, lines, "untitled");
+
+            var trackInfo = new SubtitleTrackInfo();
+            int len = subtitle.Paragraphs.Count;
+            var trackEvents = new SubtitleTrackEvent[len];
+            for (int i = 0; i < len; i++)
+            {
+                var p = subtitle.Paragraphs[i];
+                trackEvents[i] = new SubtitleTrackEvent(p.Number.ToString(CultureInfo.InvariantCulture), p.Text)
+                {
+                    StartPositionTicks = p.StartTime.TimeSpan.Ticks,
+                    EndPositionTicks = p.EndTime.TimeSpan.Ticks
+                };
+            }
+
+            trackInfo.TrackEvents = trackEvents;
+            return trackInfo;
+        }
+    }
+}