jellyfin-server/MediaBrowser.MediaEncoding/Subtitles/VttWriter.cs
2019-01-13 21:37:13 +01:00

45 lines
1.6 KiB
C#

using System;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using MediaBrowser.Model.MediaInfo;
namespace MediaBrowser.MediaEncoding.Subtitles
{
public class VttWriter : ISubtitleWriter
{
public void Write(SubtitleTrackInfo info, Stream stream, CancellationToken cancellationToken)
{
using (var writer = new StreamWriter(stream, Encoding.UTF8, 1024, true))
{
writer.WriteLine("WEBVTT");
writer.WriteLine(string.Empty);
foreach (var trackEvent in info.TrackEvents)
{
cancellationToken.ThrowIfCancellationRequested();
var startTime = TimeSpan.FromTicks(trackEvent.StartPositionTicks);
var endTime = TimeSpan.FromTicks(trackEvent.EndPositionTicks);
// make sure the start and end times are different and seqential
if (endTime.TotalMilliseconds <= startTime.TotalMilliseconds)
{
endTime = startTime.Add(TimeSpan.FromMilliseconds(1));
}
writer.WriteLine(@"{0:hh\:mm\:ss\.fff} --> {1:hh\:mm\:ss\.fff}", startTime, endTime);
var text = trackEvent.Text;
// TODO: Not sure how to handle these
text = Regex.Replace(text, @"\\n", " ", RegexOptions.IgnoreCase);
writer.WriteLine(text);
writer.WriteLine(string.Empty);
}
}
}
}
}