From febb6bced6d2eb0941ed30205558ff8cf045720b Mon Sep 17 00:00:00 2001
From: Bond_009 <Bond.009@outlook.com>
Date: Wed, 22 Jul 2020 13:34:51 +0200
Subject: Review usage of string.Substring (part 1)

Reduced allocations by replacing string.Substring with ReadOnlySpan<char>.Slice
---
 MediaBrowser.MediaEncoding/Subtitles/TtmlWriter.cs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'MediaBrowser.MediaEncoding/Subtitles/TtmlWriter.cs')

diff --git a/MediaBrowser.MediaEncoding/Subtitles/TtmlWriter.cs b/MediaBrowser.MediaEncoding/Subtitles/TtmlWriter.cs
index 7d3e18578..e5c785bc5 100644
--- a/MediaBrowser.MediaEncoding/Subtitles/TtmlWriter.cs
+++ b/MediaBrowser.MediaEncoding/Subtitles/TtmlWriter.cs
@@ -6,8 +6,12 @@ using MediaBrowser.Model.MediaInfo;
 
 namespace MediaBrowser.MediaEncoding.Subtitles
 {
+    /// <summary>
+    /// TTML subtitle writer.
+    /// </summary>
     public class TtmlWriter : ISubtitleWriter
     {
+        /// <inheritdoc />
         public void Write(SubtitleTrackInfo info, Stream stream, CancellationToken cancellationToken)
         {
             // Example: https://github.com/zmalltalker/ttml2vtt/blob/master/data/sample.xml
@@ -36,9 +40,10 @@ namespace MediaBrowser.MediaEncoding.Subtitles
 
                     text = Regex.Replace(text, @"\\n", "<br/>", RegexOptions.IgnoreCase);
 
-                    writer.WriteLine("<p begin=\"{0}\" dur=\"{1}\">{2}</p>",
+                    writer.WriteLine(
+                        "<p begin=\"{0}\" dur=\"{1}\">{2}</p>",
                         trackEvent.StartPositionTicks,
-                        (trackEvent.EndPositionTicks - trackEvent.StartPositionTicks),
+                        trackEvent.EndPositionTicks - trackEvent.StartPositionTicks,
                         text);
                 }
 
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