1 files changed, 78 insertions, 4 deletions

diff --git a/MediaBrowser.Api/Subtitles/SubtitleService.cs b/MediaBrowser.Api/Subtitles/SubtitleService.cs
index 3e692cb22..dc5799239 100644
--- a/MediaBrowser.Api/Subtitles/SubtitleService.cs
+++ b/MediaBrowser.Api/Subtitles/SubtitleService.cs
@@ -1,6 +1,4 @@
-using System.IO;
-using System.Linq;
-using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.MediaEncoding;
 using MediaBrowser.Controller.Net;
@@ -11,6 +9,10 @@ using MediaBrowser.Model.Providers;
 using ServiceStack;
 using System;
 using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -69,7 +71,8 @@ namespace MediaBrowser.Api.Subtitles
         public string Id { get; set; }
     }
 
-    [Route("/Videos/{Id}/{MediaSourceId}/Subtitles/{Index}/Stream.{Format}", "GET", Summary = "Gets subtitles in a specified format (vtt).")]
+    [Route("/Videos/{Id}/{MediaSourceId}/Subtitles/{Index}/Stream.{Format}", "GET", Summary = "Gets subtitles in a specified format.")]
+    [Route("/Videos/{Id}/{MediaSourceId}/Subtitles/{Index}/{StartPositionTicks}/Stream.{Format}", "GET", Summary = "Gets subtitles in a specified format.")]
     public class GetSubtitle
     {
         /// <summary>
@@ -90,6 +93,29 @@ namespace MediaBrowser.Api.Subtitles
 
         [ApiMember(Name = "StartPositionTicks", Description = "StartPositionTicks", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
         public long StartPositionTicks { get; set; }
+
+        [ApiMember(Name = "EndPositionTicks", Description = "EndPositionTicks", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
+        public long? EndPositionTicks { get; set; }
+    }
+
+    [Route("/Videos/{Id}/{MediaSourceId}/Subtitles/{Index}/subtitles.m3u8", "GET", Summary = "Gets an HLS subtitle playlist.")]
+    public class GetSubtitlePlaylist
+    {
+        /// <summary>
+        /// Gets or sets the id.
+        /// </summary>
+        /// <value>The id.</value>
+        [ApiMember(Name = "Id", Description = "Item Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "GET")]
+        public string Id { get; set; }
+
+        [ApiMember(Name = "MediaSourceId", Description = "MediaSourceId", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "GET")]
+        public string MediaSourceId { get; set; }
+
+        [ApiMember(Name = "Index", Description = "The subtitle stream index", IsRequired = true, DataType = "int", ParameterType = "path", Verb = "GET")]
+        public int Index { get; set; }
+
+        [ApiMember(Name = "SegmentLength", Description = "The subtitle srgment length", IsRequired = true, DataType = "int", ParameterType = "path", Verb = "GET")]
+        public int SegmentLength { get; set; }
     }
 
     public class SubtitleService : BaseApiService
@@ -105,6 +131,53 @@ namespace MediaBrowser.Api.Subtitles
             _subtitleEncoder = subtitleEncoder;
         }
 
+        public object Get(GetSubtitlePlaylist request)
+        {
+            var item = (Video)_libraryManager.GetItemById(new Guid(request.Id));
+
+            var mediaSource = item.GetMediaSources(false)
+                .First(i => string.Equals(i.Id, request.MediaSourceId ?? request.Id));
+
+            var builder = new StringBuilder();
+
+            var runtime = mediaSource.RunTimeTicks ?? -1;
+
+            if (runtime <= 0)
+            {
+                throw new ArgumentException("HLS Subtitles are not supported for this media.");
+            }
+
+            builder.AppendLine("#EXTM3U");
+            builder.AppendLine("#EXT-X-TARGETDURATION:" + request.SegmentLength.ToString(CultureInfo.InvariantCulture));
+            builder.AppendLine("#EXT-X-VERSION:3");
+            builder.AppendLine("#EXT-X-MEDIA-SEQUENCE:0");
+
+            long positionTicks = 0;
+            var segmentLengthTicks = TimeSpan.FromSeconds(request.SegmentLength).Ticks;
+
+            while (positionTicks < runtime)
+            {
+                var remaining = runtime - positionTicks;
+                var lengthTicks = Math.Min(remaining, segmentLengthTicks);
+
+                builder.AppendLine("#EXTINF:" + TimeSpan.FromTicks(lengthTicks).TotalSeconds.ToString(CultureInfo.InvariantCulture));
+
+                var endPositionTicks = Math.Min(runtime, positionTicks + segmentLengthTicks);
+
+                var url = string.Format("stream.srt?StartPositionTicks={0}&EndPositionTicks={1}",
+                    positionTicks.ToString(CultureInfo.InvariantCulture),
+                    endPositionTicks.ToString(CultureInfo.InvariantCulture));
+
+                builder.AppendLine(url);
+
+                positionTicks += segmentLengthTicks;
+            }
+
+            builder.AppendLine("#EXT-X-ENDLIST");
+            
+            return ResultFactory.GetResult(builder.ToString(), Common.Net.MimeTypes.GetMimeType("playlist.m3u8"), new Dictionary<string, string>());
+        }
+
         public object Get(GetSubtitle request)
         {
             if (string.IsNullOrEmpty(request.Format))
@@ -132,6 +205,7 @@ namespace MediaBrowser.Api.Subtitles
                 request.Index,
                 request.Format,
                 request.StartPositionTicks,
+                request.EndPositionTicks,
                 CancellationToken.None).ConfigureAwait(false);
         }