2014-06-11 16:42:03 +02:00
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Extensions;
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2015-03-31 18:24:16 +02:00
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using MediaBrowser.Common.Net;
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2014-06-11 16:42:03 +02:00
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.MediaEncoding;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.MediaInfo;
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2014-08-22 17:47:44 +02:00
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using MediaBrowser.Model.Serialization;
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2014-06-11 16:42:03 +02:00
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using System;
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using System.Collections.Concurrent;
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using System.Diagnostics;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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2016-10-25 21:02:04 +02:00
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using MediaBrowser.Model.IO;
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2016-11-01 05:07:12 +01:00
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using MediaBrowser.Model.Diagnostics;
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2016-11-08 19:44:23 +01:00
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using MediaBrowser.Model.Text;
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2015-01-10 20:42:14 +01:00
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using UniversalDetector;
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2014-06-11 16:42:03 +02:00
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namespace MediaBrowser.MediaEncoding.Subtitles
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{
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public class SubtitleEncoder : ISubtitleEncoder
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{
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private readonly ILibraryManager _libraryManager;
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private readonly ILogger _logger;
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private readonly IApplicationPaths _appPaths;
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private readonly IFileSystem _fileSystem;
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private readonly IMediaEncoder _mediaEncoder;
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2014-08-22 17:47:44 +02:00
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private readonly IJsonSerializer _json;
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2015-03-31 18:24:16 +02:00
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private readonly IHttpClient _httpClient;
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private readonly IMediaSourceManager _mediaSourceManager;
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2016-11-08 19:44:23 +01:00
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private readonly IMemoryStreamFactory _memoryStreamProvider;
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2016-11-01 05:07:12 +01:00
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private readonly IProcessFactory _processFactory;
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2016-11-08 19:44:23 +01:00
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private readonly ITextEncoding _textEncoding;
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2014-06-11 16:42:03 +02:00
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2016-11-08 19:44:23 +01:00
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public SubtitleEncoder(ILibraryManager libraryManager, ILogger logger, IApplicationPaths appPaths, IFileSystem fileSystem, IMediaEncoder mediaEncoder, IJsonSerializer json, IHttpClient httpClient, IMediaSourceManager mediaSourceManager, IMemoryStreamFactory memoryStreamProvider, IProcessFactory processFactory, ITextEncoding textEncoding)
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2014-06-11 16:42:03 +02:00
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{
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_libraryManager = libraryManager;
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_logger = logger;
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_appPaths = appPaths;
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_fileSystem = fileSystem;
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_mediaEncoder = mediaEncoder;
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2014-08-22 17:47:44 +02:00
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_json = json;
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2015-03-31 18:24:16 +02:00
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_httpClient = httpClient;
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_mediaSourceManager = mediaSourceManager;
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2016-10-06 20:55:01 +02:00
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_memoryStreamProvider = memoryStreamProvider;
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2016-11-01 05:07:12 +01:00
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_processFactory = processFactory;
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_textEncoding = textEncoding;
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2014-06-11 16:42:03 +02:00
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}
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private string SubtitleCachePath
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{
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get
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{
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2015-10-05 05:24:24 +02:00
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return Path.Combine(_appPaths.DataPath, "subtitles");
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2014-06-11 16:42:03 +02:00
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}
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}
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2015-07-28 21:42:24 +02:00
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private async Task<Stream> ConvertSubtitles(Stream stream,
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2014-06-11 16:42:03 +02:00
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string inputFormat,
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string outputFormat,
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2014-06-11 21:31:33 +02:00
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long startTimeTicks,
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2014-08-06 01:59:24 +02:00
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long? endTimeTicks,
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2016-05-27 19:17:57 +02:00
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bool preserveOriginalTimestamps,
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2014-06-11 16:42:03 +02:00
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CancellationToken cancellationToken)
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{
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2016-10-06 20:55:01 +02:00
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var ms = _memoryStreamProvider.CreateNew();
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2014-06-11 16:42:03 +02:00
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try
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{
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2015-07-28 21:42:24 +02:00
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var reader = GetReader(inputFormat, true);
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var trackInfo = reader.Parse(stream, cancellationToken);
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2014-06-11 16:42:03 +02:00
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2016-05-27 19:17:57 +02:00
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FilterEvents(trackInfo, startTimeTicks, endTimeTicks, preserveOriginalTimestamps);
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2014-06-11 21:31:33 +02:00
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2014-11-04 13:41:12 +01:00
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var writer = GetWriter(outputFormat);
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2014-06-11 16:42:03 +02:00
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2014-11-04 13:41:12 +01:00
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writer.Write(trackInfo, ms, cancellationToken);
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2014-06-11 16:42:03 +02:00
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ms.Position = 0;
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}
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catch
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{
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ms.Dispose();
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throw;
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}
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return ms;
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}
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2014-08-06 01:59:24 +02:00
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private void FilterEvents(SubtitleTrackInfo track, long startPositionTicks, long? endTimeTicks, bool preserveTimestamps)
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2014-06-11 21:31:33 +02:00
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{
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2014-08-06 01:59:24 +02:00
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// Drop subs that are earlier than what we're looking for
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track.TrackEvents = track.TrackEvents
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.SkipWhile(i => (i.StartPositionTicks - startPositionTicks) < 0 || (i.EndPositionTicks - startPositionTicks) < 0)
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.ToList();
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2014-06-11 21:31:33 +02:00
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2014-08-06 01:59:24 +02:00
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if (endTimeTicks.HasValue)
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2014-06-11 21:31:33 +02:00
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{
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2014-08-06 01:59:24 +02:00
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var endTime = endTimeTicks.Value;
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track.TrackEvents = track.TrackEvents
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.TakeWhile(i => i.StartPositionTicks <= endTime)
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.ToList();
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2014-06-11 21:31:33 +02:00
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}
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2014-08-06 01:59:24 +02:00
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if (!preserveTimestamps)
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{
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foreach (var trackEvent in track.TrackEvents)
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{
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trackEvent.EndPositionTicks -= startPositionTicks;
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trackEvent.StartPositionTicks -= startPositionTicks;
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}
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}
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2014-06-11 21:31:33 +02:00
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}
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2014-06-11 16:42:03 +02:00
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public async Task<Stream> GetSubtitles(string itemId,
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string mediaSourceId,
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int subtitleStreamIndex,
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string outputFormat,
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2014-06-11 21:31:33 +02:00
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long startTimeTicks,
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2014-08-06 01:59:24 +02:00
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long? endTimeTicks,
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2016-05-27 19:17:57 +02:00
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bool preserveOriginalTimestamps,
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2014-06-11 16:42:03 +02:00
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CancellationToken cancellationToken)
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{
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2016-07-07 17:56:09 +02:00
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if (string.IsNullOrWhiteSpace(itemId))
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{
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throw new ArgumentNullException("itemId");
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}
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if (string.IsNullOrWhiteSpace(mediaSourceId))
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{
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throw new ArgumentNullException("mediaSourceId");
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}
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2014-06-11 16:42:03 +02:00
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var subtitle = await GetSubtitleStream(itemId, mediaSourceId, subtitleStreamIndex, cancellationToken)
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.ConfigureAwait(false);
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2015-12-27 22:07:28 +01:00
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var inputFormat = subtitle.Item2;
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2016-11-18 04:12:03 +01:00
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var writer = TryGetWriter(outputFormat);
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2015-12-27 22:07:28 +01:00
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2016-11-18 04:12:03 +01:00
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if (string.Equals(inputFormat, outputFormat, StringComparison.OrdinalIgnoreCase) && writer == null)
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{
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return subtitle.Item1;
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}
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if (writer == null)
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2014-06-11 16:42:03 +02:00
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{
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2015-12-27 22:07:28 +01:00
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return subtitle.Item1;
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}
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2014-06-11 16:42:03 +02:00
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2015-12-27 22:07:28 +01:00
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using (var stream = subtitle.Item1)
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{
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2016-05-27 19:17:57 +02:00
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return await ConvertSubtitles(stream, inputFormat, outputFormat, startTimeTicks, endTimeTicks, preserveOriginalTimestamps, cancellationToken).ConfigureAwait(false);
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2014-06-11 16:42:03 +02:00
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}
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}
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private async Task<Tuple<Stream, string>> GetSubtitleStream(string itemId,
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string mediaSourceId,
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int subtitleStreamIndex,
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CancellationToken cancellationToken)
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{
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2016-07-07 17:56:09 +02:00
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if (string.IsNullOrWhiteSpace(itemId))
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{
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throw new ArgumentNullException("itemId");
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}
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if (string.IsNullOrWhiteSpace(mediaSourceId))
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{
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throw new ArgumentNullException("mediaSourceId");
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}
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2015-04-09 07:20:23 +02:00
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var mediaSources = await _mediaSourceManager.GetPlayackMediaSources(itemId, null, false, new[] { MediaType.Audio, MediaType.Video }, cancellationToken).ConfigureAwait(false);
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2014-06-11 16:42:03 +02:00
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2015-03-31 18:24:16 +02:00
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var mediaSource = mediaSources
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2016-07-07 17:56:09 +02:00
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.First(i => string.Equals(i.Id, mediaSourceId, StringComparison.OrdinalIgnoreCase));
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2014-06-11 16:42:03 +02:00
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var subtitleStream = mediaSource.MediaStreams
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.First(i => i.Type == MediaStreamType.Subtitle && i.Index == subtitleStreamIndex);
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var inputFiles = new[] { mediaSource.Path };
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if (mediaSource.VideoType.HasValue)
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{
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2014-06-17 03:56:23 +02:00
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if (mediaSource.VideoType.Value == VideoType.BluRay ||
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mediaSource.VideoType.Value == VideoType.Dvd)
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2014-06-11 16:42:03 +02:00
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{
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var mediaSourceItem = (Video)_libraryManager.GetItemById(new Guid(mediaSourceId));
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inputFiles = mediaSourceItem.GetPlayableStreamFiles().ToArray();
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}
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}
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2014-06-17 03:56:23 +02:00
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var fileInfo = await GetReadableFile(mediaSource.Path, inputFiles, mediaSource.Protocol, subtitleStream, cancellationToken).ConfigureAwait(false);
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2014-06-11 16:42:03 +02:00
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2016-04-03 03:19:27 +02:00
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var stream = await GetSubtitleStream(fileInfo.Item1, subtitleStream.Language, fileInfo.Item2, fileInfo.Item4, cancellationToken).ConfigureAwait(false);
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2014-06-11 16:42:03 +02:00
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2015-03-31 18:24:16 +02:00
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return new Tuple<Stream, string>(stream, fileInfo.Item3);
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2014-06-11 16:42:03 +02:00
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}
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2016-04-03 03:19:27 +02:00
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private async Task<Stream> GetSubtitleStream(string path, string language, MediaProtocol protocol, bool requiresCharset, CancellationToken cancellationToken)
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2014-06-11 21:31:33 +02:00
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{
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2015-01-18 20:53:34 +01:00
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if (requiresCharset)
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2014-06-11 21:31:33 +02:00
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{
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2016-04-03 03:19:27 +02:00
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var charset = await GetSubtitleFileCharacterSet(path, language, protocol, cancellationToken).ConfigureAwait(false);
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2014-06-11 21:31:33 +02:00
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if (!string.IsNullOrEmpty(charset))
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{
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2015-03-31 18:24:16 +02:00
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using (var fs = await GetStream(path, protocol, cancellationToken).ConfigureAwait(false))
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2014-06-11 21:31:33 +02:00
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{
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2015-01-18 20:53:34 +01:00
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using (var reader = new StreamReader(fs, GetEncoding(charset)))
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2014-06-11 21:31:33 +02:00
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{
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var text = await reader.ReadToEndAsync().ConfigureAwait(false);
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var bytes = Encoding.UTF8.GetBytes(text);
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2016-10-06 20:55:01 +02:00
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return _memoryStreamProvider.CreateNew(bytes);
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2014-06-11 21:31:33 +02:00
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}
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}
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}
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}
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2015-09-13 23:32:02 +02:00
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return _fileSystem.OpenRead(path);
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2014-06-11 21:31:33 +02:00
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}
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2015-01-18 20:53:34 +01:00
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private Encoding GetEncoding(string charset)
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{
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if (string.IsNullOrWhiteSpace(charset))
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{
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throw new ArgumentNullException("charset");
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}
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2016-04-03 03:19:27 +02:00
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_logger.Debug("Getting encoding object for character set: {0}", charset);
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2015-01-18 20:53:34 +01:00
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try
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{
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return Encoding.GetEncoding(charset);
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}
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catch (ArgumentException)
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{
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2016-04-03 03:19:27 +02:00
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charset = charset.Replace("-", string.Empty);
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_logger.Debug("Getting encoding object for character set: {0}", charset);
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return Encoding.GetEncoding(charset);
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2015-01-18 20:53:34 +01:00
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}
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}
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2015-03-31 18:24:16 +02:00
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private async Task<Tuple<string, MediaProtocol, string, bool>> GetReadableFile(string mediaPath,
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2014-06-11 16:42:03 +02:00
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string[] inputFiles,
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2014-06-17 03:56:23 +02:00
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MediaProtocol protocol,
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2014-06-11 16:42:03 +02:00
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MediaStream subtitleStream,
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CancellationToken cancellationToken)
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{
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if (!subtitleStream.IsExternal)
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{
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2014-08-30 17:12:28 +02:00
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string outputFormat;
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string outputCodec;
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2016-04-03 01:39:08 +02:00
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if (string.Equals(subtitleStream.Codec, "ass", StringComparison.OrdinalIgnoreCase) ||
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string.Equals(subtitleStream.Codec, "ssa", StringComparison.OrdinalIgnoreCase) ||
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string.Equals(subtitleStream.Codec, "srt", StringComparison.OrdinalIgnoreCase))
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2014-08-30 17:12:28 +02:00
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{
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// Extract
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outputCodec = "copy";
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2016-04-03 01:39:08 +02:00
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outputFormat = subtitleStream.Codec;
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2014-08-30 17:12:28 +02:00
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}
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2016-04-03 01:39:08 +02:00
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|
|
else if (string.Equals(subtitleStream.Codec, "subrip", StringComparison.OrdinalIgnoreCase))
|
2014-08-30 17:12:28 +02:00
|
|
|
|
{
|
|
|
|
|
// Extract
|
|
|
|
|
outputCodec = "copy";
|
|
|
|
|
outputFormat = "srt";
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
// Extract
|
|
|
|
|
outputCodec = "srt";
|
|
|
|
|
outputFormat = "srt";
|
|
|
|
|
}
|
|
|
|
|
|
2014-06-11 16:42:03 +02:00
|
|
|
|
// Extract
|
2015-03-31 18:24:16 +02:00
|
|
|
|
var outputPath = GetSubtitleCachePath(mediaPath, protocol, subtitleStream.Index, "." + outputFormat);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2014-08-30 17:12:28 +02:00
|
|
|
|
await ExtractTextSubtitle(inputFiles, protocol, subtitleStream.Index, outputCodec, outputPath, cancellationToken)
|
2014-06-11 16:42:03 +02:00
|
|
|
|
.ConfigureAwait(false);
|
|
|
|
|
|
2015-03-31 18:24:16 +02:00
|
|
|
|
return new Tuple<string, MediaProtocol, string, bool>(outputPath, MediaProtocol.File, outputFormat, false);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var currentFormat = (Path.GetExtension(subtitleStream.Path) ?? subtitleStream.Codec)
|
|
|
|
|
.TrimStart('.');
|
|
|
|
|
|
|
|
|
|
if (GetReader(currentFormat, false) == null)
|
|
|
|
|
{
|
|
|
|
|
// Convert
|
2015-03-31 18:24:16 +02:00
|
|
|
|
var outputPath = GetSubtitleCachePath(mediaPath, protocol, subtitleStream.Index, ".srt");
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2016-04-03 03:19:27 +02:00
|
|
|
|
await ConvertTextSubtitleToSrt(subtitleStream.Path, subtitleStream.Language, protocol, outputPath, cancellationToken).ConfigureAwait(false);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2015-03-31 18:24:16 +02:00
|
|
|
|
return new Tuple<string, MediaProtocol, string, bool>(outputPath, MediaProtocol.File, "srt", true);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
|
2015-03-31 18:24:16 +02:00
|
|
|
|
return new Tuple<string, MediaProtocol, string, bool>(subtitleStream.Path, protocol, currentFormat, true);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private ISubtitleParser GetReader(string format, bool throwIfMissing)
|
|
|
|
|
{
|
|
|
|
|
if (string.IsNullOrEmpty(format))
|
|
|
|
|
{
|
|
|
|
|
throw new ArgumentNullException("format");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (string.Equals(format, SubtitleFormat.SRT, StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
2015-01-21 20:21:19 +01:00
|
|
|
|
return new SrtParser(_logger);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
2014-08-22 04:24:38 +02:00
|
|
|
|
if (string.Equals(format, SubtitleFormat.SSA, StringComparison.OrdinalIgnoreCase))
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
|
|
|
|
return new SsaParser();
|
|
|
|
|
}
|
2014-08-22 04:24:38 +02:00
|
|
|
|
if (string.Equals(format, SubtitleFormat.ASS, StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
return new AssParser();
|
|
|
|
|
}
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
|
|
|
|
if (throwIfMissing)
|
|
|
|
|
{
|
|
|
|
|
throw new ArgumentException("Unsupported format: " + format);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
|
2015-12-27 22:07:28 +01:00
|
|
|
|
private ISubtitleWriter TryGetWriter(string format)
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
|
|
|
|
if (string.IsNullOrEmpty(format))
|
|
|
|
|
{
|
|
|
|
|
throw new ArgumentNullException("format");
|
|
|
|
|
}
|
|
|
|
|
|
2014-08-22 17:47:44 +02:00
|
|
|
|
if (string.Equals(format, "json", StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
return new JsonWriter(_json);
|
|
|
|
|
}
|
2014-06-11 22:57:18 +02:00
|
|
|
|
if (string.Equals(format, SubtitleFormat.SRT, StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
return new SrtWriter();
|
|
|
|
|
}
|
2014-06-11 16:42:03 +02:00
|
|
|
|
if (string.Equals(format, SubtitleFormat.VTT, StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
return new VttWriter();
|
|
|
|
|
}
|
2014-08-06 01:59:24 +02:00
|
|
|
|
if (string.Equals(format, SubtitleFormat.TTML, StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
return new TtmlWriter();
|
|
|
|
|
}
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2015-12-27 22:07:28 +01:00
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private ISubtitleWriter GetWriter(string format)
|
|
|
|
|
{
|
|
|
|
|
var writer = TryGetWriter(format);
|
|
|
|
|
|
|
|
|
|
if (writer != null)
|
|
|
|
|
{
|
|
|
|
|
return writer;
|
|
|
|
|
}
|
|
|
|
|
|
2014-06-11 16:42:03 +02:00
|
|
|
|
throw new ArgumentException("Unsupported format: " + format);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// The _semaphoreLocks
|
|
|
|
|
/// </summary>
|
|
|
|
|
private readonly ConcurrentDictionary<string, SemaphoreSlim> _semaphoreLocks =
|
|
|
|
|
new ConcurrentDictionary<string, SemaphoreSlim>();
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Gets the lock.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="filename">The filename.</param>
|
|
|
|
|
/// <returns>System.Object.</returns>
|
|
|
|
|
private SemaphoreSlim GetLock(string filename)
|
|
|
|
|
{
|
|
|
|
|
return _semaphoreLocks.GetOrAdd(filename, key => new SemaphoreSlim(1, 1));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
2014-08-24 23:07:04 +02:00
|
|
|
|
/// Converts the text subtitle to SRT.
|
2014-06-11 16:42:03 +02:00
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="inputPath">The input path.</param>
|
2015-03-31 18:24:16 +02:00
|
|
|
|
/// <param name="inputProtocol">The input protocol.</param>
|
2014-06-11 16:42:03 +02:00
|
|
|
|
/// <param name="outputPath">The output path.</param>
|
|
|
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
|
|
|
/// <returns>Task.</returns>
|
2016-04-03 03:19:27 +02:00
|
|
|
|
private async Task ConvertTextSubtitleToSrt(string inputPath, string language, MediaProtocol inputProtocol, string outputPath, CancellationToken cancellationToken)
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
|
|
|
|
var semaphore = GetLock(outputPath);
|
|
|
|
|
|
|
|
|
|
await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
|
|
|
|
|
|
|
|
|
|
try
|
|
|
|
|
{
|
2016-04-03 03:19:27 +02:00
|
|
|
|
if (!_fileSystem.FileExists(outputPath))
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
2016-04-03 03:19:27 +02:00
|
|
|
|
await ConvertTextSubtitleToSrtInternal(inputPath, language, inputProtocol, outputPath, cancellationToken).ConfigureAwait(false);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
finally
|
|
|
|
|
{
|
|
|
|
|
semaphore.Release();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
2014-08-24 23:07:04 +02:00
|
|
|
|
/// Converts the text subtitle to SRT internal.
|
2014-06-11 16:42:03 +02:00
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="inputPath">The input path.</param>
|
2015-03-31 18:24:16 +02:00
|
|
|
|
/// <param name="inputProtocol">The input protocol.</param>
|
2014-06-11 16:42:03 +02:00
|
|
|
|
/// <param name="outputPath">The output path.</param>
|
2015-03-31 18:24:16 +02:00
|
|
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
2014-06-11 16:42:03 +02:00
|
|
|
|
/// <returns>Task.</returns>
|
2015-03-31 18:24:16 +02:00
|
|
|
|
/// <exception cref="System.ArgumentNullException">
|
|
|
|
|
/// inputPath
|
2014-06-11 16:42:03 +02:00
|
|
|
|
/// or
|
2015-03-31 18:24:16 +02:00
|
|
|
|
/// outputPath
|
|
|
|
|
/// </exception>
|
2016-04-03 03:19:27 +02:00
|
|
|
|
private async Task ConvertTextSubtitleToSrtInternal(string inputPath, string language, MediaProtocol inputProtocol, string outputPath, CancellationToken cancellationToken)
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
|
|
|
|
if (string.IsNullOrEmpty(inputPath))
|
|
|
|
|
{
|
|
|
|
|
throw new ArgumentNullException("inputPath");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (string.IsNullOrEmpty(outputPath))
|
|
|
|
|
{
|
|
|
|
|
throw new ArgumentNullException("outputPath");
|
|
|
|
|
}
|
|
|
|
|
|
2016-04-03 03:19:27 +02:00
|
|
|
|
_fileSystem.CreateDirectory(Path.GetDirectoryName(outputPath));
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2016-04-03 03:19:27 +02:00
|
|
|
|
var encodingParam = await GetSubtitleFileCharacterSet(inputPath, language, inputProtocol, cancellationToken).ConfigureAwait(false);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
|
|
|
|
if (!string.IsNullOrEmpty(encodingParam))
|
|
|
|
|
{
|
|
|
|
|
encodingParam = " -sub_charenc " + encodingParam;
|
|
|
|
|
}
|
|
|
|
|
|
2016-11-01 05:07:12 +01:00
|
|
|
|
var process = _processFactory.Create(new ProcessOptions
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
2016-11-01 05:07:12 +01:00
|
|
|
|
CreateNoWindow = true,
|
2016-11-19 08:51:07 +01:00
|
|
|
|
UseShellExecute = true,
|
2016-11-01 05:07:12 +01:00
|
|
|
|
FileName = _mediaEncoder.EncoderPath,
|
|
|
|
|
Arguments = string.Format("{0} -i \"{1}\" -c:s srt \"{2}\"", encodingParam, inputPath, outputPath),
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2016-11-01 05:07:12 +01:00
|
|
|
|
IsHidden = true,
|
|
|
|
|
ErrorDialog = false
|
|
|
|
|
});
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2015-10-05 00:04:56 +02:00
|
|
|
|
_logger.Info("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
process.Start();
|
|
|
|
|
}
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
{
|
|
|
|
|
_logger.ErrorException("Error starting ffmpeg", ex);
|
|
|
|
|
|
|
|
|
|
throw;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var ranToCompletion = process.WaitForExit(60000);
|
|
|
|
|
|
|
|
|
|
if (!ranToCompletion)
|
|
|
|
|
{
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
_logger.Info("Killing ffmpeg subtitle conversion process");
|
|
|
|
|
|
2016-11-14 07:44:21 +01:00
|
|
|
|
process.Kill();
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
{
|
|
|
|
|
_logger.ErrorException("Error killing subtitle conversion process", ex);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var exitCode = ranToCompletion ? process.ExitCode : -1;
|
|
|
|
|
|
|
|
|
|
process.Dispose();
|
|
|
|
|
|
|
|
|
|
var failed = false;
|
|
|
|
|
|
|
|
|
|
if (exitCode == -1)
|
|
|
|
|
{
|
|
|
|
|
failed = true;
|
|
|
|
|
|
2016-04-03 03:19:27 +02:00
|
|
|
|
if (_fileSystem.FileExists(outputPath))
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
_logger.Info("Deleting converted subtitle due to failure: ", outputPath);
|
2015-01-13 04:46:44 +01:00
|
|
|
|
_fileSystem.DeleteFile(outputPath);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
catch (IOException ex)
|
|
|
|
|
{
|
|
|
|
|
_logger.ErrorException("Error deleting converted subtitle {0}", ex, outputPath);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
2016-04-03 03:19:27 +02:00
|
|
|
|
else if (!_fileSystem.FileExists(outputPath))
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
|
|
|
|
failed = true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (failed)
|
|
|
|
|
{
|
2016-11-14 07:44:21 +01:00
|
|
|
|
var msg = string.Format("ffmpeg subtitle conversion failed for {0}", inputPath);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
|
|
|
|
_logger.Error(msg);
|
|
|
|
|
|
2016-11-01 05:07:12 +01:00
|
|
|
|
throw new Exception(msg);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
await SetAssFont(outputPath).ConfigureAwait(false);
|
2016-11-14 07:44:21 +01:00
|
|
|
|
|
|
|
|
|
_logger.Info("ffmpeg subtitle conversion succeeded for {0}", inputPath);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Extracts the text subtitle.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="inputFiles">The input files.</param>
|
2014-06-17 03:56:23 +02:00
|
|
|
|
/// <param name="protocol">The protocol.</param>
|
2014-06-11 16:42:03 +02:00
|
|
|
|
/// <param name="subtitleStreamIndex">Index of the subtitle stream.</param>
|
2014-08-30 16:26:29 +02:00
|
|
|
|
/// <param name="outputCodec">The output codec.</param>
|
2014-06-11 16:42:03 +02:00
|
|
|
|
/// <param name="outputPath">The output path.</param>
|
|
|
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
|
|
|
/// <returns>Task.</returns>
|
|
|
|
|
/// <exception cref="System.ArgumentException">Must use inputPath list overload</exception>
|
2014-06-17 03:56:23 +02:00
|
|
|
|
private async Task ExtractTextSubtitle(string[] inputFiles, MediaProtocol protocol, int subtitleStreamIndex,
|
2014-08-30 16:26:29 +02:00
|
|
|
|
string outputCodec, string outputPath, CancellationToken cancellationToken)
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
|
|
|
|
var semaphore = GetLock(outputPath);
|
|
|
|
|
|
|
|
|
|
await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
|
|
|
|
|
|
|
|
|
|
try
|
|
|
|
|
{
|
2016-04-03 03:19:27 +02:00
|
|
|
|
if (!_fileSystem.FileExists(outputPath))
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
2014-06-17 03:56:23 +02:00
|
|
|
|
await ExtractTextSubtitleInternal(_mediaEncoder.GetInputArgument(inputFiles, protocol), subtitleStreamIndex,
|
2014-08-30 16:26:29 +02:00
|
|
|
|
outputCodec, outputPath, cancellationToken).ConfigureAwait(false);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
finally
|
|
|
|
|
{
|
|
|
|
|
semaphore.Release();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private async Task ExtractTextSubtitleInternal(string inputPath, int subtitleStreamIndex,
|
2014-08-30 16:26:29 +02:00
|
|
|
|
string outputCodec, string outputPath, CancellationToken cancellationToken)
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
|
|
|
|
if (string.IsNullOrEmpty(inputPath))
|
|
|
|
|
{
|
|
|
|
|
throw new ArgumentNullException("inputPath");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (string.IsNullOrEmpty(outputPath))
|
|
|
|
|
{
|
|
|
|
|
throw new ArgumentNullException("outputPath");
|
|
|
|
|
}
|
|
|
|
|
|
2016-04-03 03:19:27 +02:00
|
|
|
|
_fileSystem.CreateDirectory(Path.GetDirectoryName(outputPath));
|
2014-06-11 21:31:33 +02:00
|
|
|
|
|
2014-08-30 16:26:29 +02:00
|
|
|
|
var processArgs = string.Format("-i {0} -map 0:{1} -an -vn -c:s {2} \"{3}\"", inputPath,
|
|
|
|
|
subtitleStreamIndex, outputCodec, outputPath);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2016-11-01 05:07:12 +01:00
|
|
|
|
var process = _processFactory.Create(new ProcessOptions
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
2016-11-01 05:07:12 +01:00
|
|
|
|
CreateNoWindow = true,
|
2016-11-19 08:51:07 +01:00
|
|
|
|
UseShellExecute = true,
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2016-11-01 05:07:12 +01:00
|
|
|
|
FileName = _mediaEncoder.EncoderPath,
|
|
|
|
|
Arguments = processArgs,
|
|
|
|
|
IsHidden = true,
|
|
|
|
|
ErrorDialog = false
|
|
|
|
|
});
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2014-12-17 06:30:31 +01:00
|
|
|
|
_logger.Info("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
process.Start();
|
|
|
|
|
}
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
{
|
|
|
|
|
_logger.ErrorException("Error starting ffmpeg", ex);
|
|
|
|
|
|
|
|
|
|
throw;
|
|
|
|
|
}
|
|
|
|
|
|
2016-03-22 05:15:12 +01:00
|
|
|
|
var ranToCompletion = process.WaitForExit(300000);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
|
|
|
|
if (!ranToCompletion)
|
|
|
|
|
{
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
_logger.Info("Killing ffmpeg subtitle extraction process");
|
|
|
|
|
|
2016-11-14 07:44:21 +01:00
|
|
|
|
process.Kill();
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
{
|
|
|
|
|
_logger.ErrorException("Error killing subtitle extraction process", ex);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var exitCode = ranToCompletion ? process.ExitCode : -1;
|
|
|
|
|
|
|
|
|
|
process.Dispose();
|
|
|
|
|
|
|
|
|
|
var failed = false;
|
|
|
|
|
|
|
|
|
|
if (exitCode == -1)
|
|
|
|
|
{
|
|
|
|
|
failed = true;
|
|
|
|
|
|
2014-12-17 06:30:31 +01:00
|
|
|
|
try
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
2014-12-17 06:30:31 +01:00
|
|
|
|
_logger.Info("Deleting extracted subtitle due to failure: {0}", outputPath);
|
2015-01-13 04:46:44 +01:00
|
|
|
|
_fileSystem.DeleteFile(outputPath);
|
2014-12-17 06:30:31 +01:00
|
|
|
|
}
|
|
|
|
|
catch (FileNotFoundException)
|
|
|
|
|
{
|
2015-01-10 20:42:14 +01:00
|
|
|
|
|
2014-12-17 06:30:31 +01:00
|
|
|
|
}
|
|
|
|
|
catch (IOException ex)
|
|
|
|
|
{
|
|
|
|
|
_logger.ErrorException("Error deleting extracted subtitle {0}", ex, outputPath);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
2016-04-03 03:19:27 +02:00
|
|
|
|
else if (!_fileSystem.FileExists(outputPath))
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
|
|
|
|
failed = true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (failed)
|
|
|
|
|
{
|
|
|
|
|
var msg = string.Format("ffmpeg subtitle extraction failed for {0} to {1}", inputPath, outputPath);
|
|
|
|
|
|
|
|
|
|
_logger.Error(msg);
|
|
|
|
|
|
2016-11-01 05:07:12 +01:00
|
|
|
|
throw new Exception(msg);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
var msg = string.Format("ffmpeg subtitle extraction completed for {0} to {1}", inputPath, outputPath);
|
|
|
|
|
|
|
|
|
|
_logger.Info(msg);
|
|
|
|
|
}
|
|
|
|
|
|
2014-09-06 06:21:23 +02:00
|
|
|
|
if (string.Equals(outputCodec, "ass", StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
await SetAssFont(outputPath).ConfigureAwait(false);
|
|
|
|
|
}
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// Sets the ass font.
|
|
|
|
|
/// </summary>
|
|
|
|
|
/// <param name="file">The file.</param>
|
|
|
|
|
/// <returns>Task.</returns>
|
|
|
|
|
private async Task SetAssFont(string file)
|
|
|
|
|
{
|
|
|
|
|
_logger.Info("Setting ass font within {0}", file);
|
|
|
|
|
|
|
|
|
|
string text;
|
|
|
|
|
Encoding encoding;
|
|
|
|
|
|
2016-11-01 05:07:12 +01:00
|
|
|
|
using (var fileStream = _fileSystem.OpenRead(file))
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
2016-11-01 05:07:12 +01:00
|
|
|
|
using (var reader = new StreamReader(fileStream, true))
|
|
|
|
|
{
|
|
|
|
|
encoding = reader.CurrentEncoding;
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2016-11-01 05:07:12 +01:00
|
|
|
|
text = await reader.ReadToEndAsync().ConfigureAwait(false);
|
|
|
|
|
}
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var newText = text.Replace(",Arial,", ",Arial Unicode MS,");
|
|
|
|
|
|
|
|
|
|
if (!string.Equals(text, newText))
|
|
|
|
|
{
|
2016-11-01 05:07:12 +01:00
|
|
|
|
using (var fileStream = _fileSystem.GetFileStream(file, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read))
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
2016-11-01 05:07:12 +01:00
|
|
|
|
using (var writer = new StreamWriter(fileStream, encoding))
|
|
|
|
|
{
|
|
|
|
|
writer.Write(newText);
|
|
|
|
|
}
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2015-03-31 18:24:16 +02:00
|
|
|
|
private string GetSubtitleCachePath(string mediaPath, MediaProtocol protocol, int subtitleStreamIndex, string outputSubtitleExtension)
|
2014-06-11 16:42:03 +02:00
|
|
|
|
{
|
2015-03-31 18:24:16 +02:00
|
|
|
|
if (protocol == MediaProtocol.File)
|
|
|
|
|
{
|
|
|
|
|
var ticksParam = string.Empty;
|
|
|
|
|
|
|
|
|
|
var date = _fileSystem.GetLastWriteTimeUtc(mediaPath);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2015-03-31 18:24:16 +02:00
|
|
|
|
var filename = (mediaPath + "_" + subtitleStreamIndex.ToString(CultureInfo.InvariantCulture) + "_" + date.Ticks.ToString(CultureInfo.InvariantCulture) + ticksParam).GetMD5() + outputSubtitleExtension;
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2015-03-31 18:24:16 +02:00
|
|
|
|
var prefix = filename.Substring(0, 1);
|
|
|
|
|
|
|
|
|
|
return Path.Combine(SubtitleCachePath, prefix, filename);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
var filename = (mediaPath + "_" + subtitleStreamIndex.ToString(CultureInfo.InvariantCulture)).GetMD5() + outputSubtitleExtension;
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2015-03-31 18:24:16 +02:00
|
|
|
|
var prefix = filename.Substring(0, 1);
|
2014-06-11 16:42:03 +02:00
|
|
|
|
|
2015-03-31 18:24:16 +02:00
|
|
|
|
return Path.Combine(SubtitleCachePath, prefix, filename);
|
|
|
|
|
}
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
2014-06-11 21:31:33 +02:00
|
|
|
|
|
2016-04-03 03:19:27 +02:00
|
|
|
|
public async Task<string> GetSubtitleFileCharacterSet(string path, string language, MediaProtocol protocol, CancellationToken cancellationToken)
|
2014-06-11 21:31:33 +02:00
|
|
|
|
{
|
2015-03-31 18:24:16 +02:00
|
|
|
|
if (protocol == MediaProtocol.File)
|
2015-01-18 20:53:34 +01:00
|
|
|
|
{
|
2016-11-03 23:34:16 +01:00
|
|
|
|
var fileEncoding = _textEncoding.GetFileEncoding(path);
|
|
|
|
|
|
|
|
|
|
if (fileEncoding != null && fileEncoding.Equals(Encoding.UTF8))
|
2015-03-31 18:24:16 +02:00
|
|
|
|
{
|
|
|
|
|
return string.Empty;
|
|
|
|
|
}
|
2015-01-18 20:53:34 +01:00
|
|
|
|
}
|
|
|
|
|
|
2016-04-03 03:19:27 +02:00
|
|
|
|
var charset = await DetectCharset(path, language, protocol, cancellationToken).ConfigureAwait(false);
|
2015-01-10 20:42:14 +01:00
|
|
|
|
|
2015-01-12 03:12:47 +01:00
|
|
|
|
if (!string.IsNullOrWhiteSpace(charset))
|
|
|
|
|
{
|
|
|
|
|
if (string.Equals(charset, "utf-8", StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
return null;
|
|
|
|
|
}
|
2015-01-10 20:42:14 +01:00
|
|
|
|
|
2015-01-12 03:12:47 +01:00
|
|
|
|
return charset;
|
|
|
|
|
}
|
2015-01-10 20:42:14 +01:00
|
|
|
|
|
2016-04-03 03:19:27 +02:00
|
|
|
|
if (!string.IsNullOrWhiteSpace(language))
|
|
|
|
|
{
|
|
|
|
|
return GetSubtitleFileCharacterSetFromLanguage(language);
|
|
|
|
|
}
|
|
|
|
|
|
2015-01-18 20:53:34 +01:00
|
|
|
|
return null;
|
|
|
|
|
}
|
2014-06-11 21:31:33 +02:00
|
|
|
|
|
2015-01-18 20:53:34 +01:00
|
|
|
|
public string GetSubtitleFileCharacterSetFromLanguage(string language)
|
|
|
|
|
{
|
2016-09-03 19:16:36 +02:00
|
|
|
|
// https://developer.xamarin.com/api/type/System.Text.Encoding/
|
|
|
|
|
|
2014-06-11 21:31:33 +02:00
|
|
|
|
switch (language.ToLower())
|
|
|
|
|
{
|
2016-09-03 19:16:36 +02:00
|
|
|
|
case "hun":
|
|
|
|
|
return "windows-1252";
|
2014-06-11 21:31:33 +02:00
|
|
|
|
case "pol":
|
|
|
|
|
case "cze":
|
|
|
|
|
case "ces":
|
|
|
|
|
case "slo":
|
|
|
|
|
case "slk":
|
|
|
|
|
case "slv":
|
|
|
|
|
case "srp":
|
|
|
|
|
case "hrv":
|
|
|
|
|
case "rum":
|
|
|
|
|
case "ron":
|
|
|
|
|
case "rup":
|
|
|
|
|
case "alb":
|
|
|
|
|
case "sqi":
|
|
|
|
|
return "windows-1250";
|
|
|
|
|
case "ara":
|
|
|
|
|
return "windows-1256";
|
|
|
|
|
case "heb":
|
|
|
|
|
return "windows-1255";
|
|
|
|
|
case "grc":
|
|
|
|
|
case "gre":
|
|
|
|
|
return "windows-1253";
|
|
|
|
|
case "crh":
|
|
|
|
|
case "ota":
|
|
|
|
|
case "tur":
|
|
|
|
|
return "windows-1254";
|
|
|
|
|
case "rus":
|
|
|
|
|
return "windows-1251";
|
|
|
|
|
case "vie":
|
|
|
|
|
return "windows-1258";
|
|
|
|
|
case "kor":
|
|
|
|
|
return "cp949";
|
|
|
|
|
default:
|
|
|
|
|
return "windows-1252";
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2016-04-03 03:19:27 +02:00
|
|
|
|
private async Task<string> DetectCharset(string path, string language, MediaProtocol protocol, CancellationToken cancellationToken)
|
2015-01-10 20:42:14 +01:00
|
|
|
|
{
|
|
|
|
|
try
|
|
|
|
|
{
|
2015-03-31 18:24:16 +02:00
|
|
|
|
using (var file = await GetStream(path, protocol, cancellationToken).ConfigureAwait(false))
|
2015-01-10 20:42:14 +01:00
|
|
|
|
{
|
|
|
|
|
var detector = new CharsetDetector();
|
|
|
|
|
detector.Feed(file);
|
|
|
|
|
detector.DataEnd();
|
|
|
|
|
|
|
|
|
|
var charset = detector.Charset;
|
|
|
|
|
|
|
|
|
|
if (!string.IsNullOrWhiteSpace(charset))
|
|
|
|
|
{
|
|
|
|
|
_logger.Info("UniversalDetector detected charset {0} for {1}", charset, path);
|
|
|
|
|
}
|
|
|
|
|
|
2016-04-03 03:19:27 +02:00
|
|
|
|
// This is often incorrectly indetected. If this happens, try to use other techniques instead
|
|
|
|
|
if (string.Equals("x-mac-cyrillic", charset, StringComparison.OrdinalIgnoreCase))
|
|
|
|
|
{
|
|
|
|
|
if (!string.IsNullOrWhiteSpace(language))
|
|
|
|
|
{
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2015-01-10 20:42:14 +01:00
|
|
|
|
return charset;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
catch (IOException ex)
|
|
|
|
|
{
|
|
|
|
|
_logger.ErrorException("Error attempting to determine subtitle charset from {0}", ex, path);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
|
2015-03-31 18:24:16 +02:00
|
|
|
|
private async Task<Stream> GetStream(string path, MediaProtocol protocol, CancellationToken cancellationToken)
|
|
|
|
|
{
|
|
|
|
|
if (protocol == MediaProtocol.Http)
|
|
|
|
|
{
|
|
|
|
|
return await _httpClient.Get(path, cancellationToken).ConfigureAwait(false);
|
|
|
|
|
}
|
|
|
|
|
if (protocol == MediaProtocol.File)
|
|
|
|
|
{
|
2016-10-25 21:02:04 +02:00
|
|
|
|
return _fileSystem.GetFileStream(path, FileOpenMode.Open, FileAccessMode.Read, FileShareMode.ReadWrite);
|
2015-03-31 18:24:16 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
throw new ArgumentOutOfRangeException("protocol");
|
|
|
|
|
}
|
2014-06-11 16:42:03 +02:00
|
|
|
|
}
|
|
|
|
|
}
|