mirror of
https://github.com/jellyfin/jellyfin.git
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65cd3ed597
This makes resolving dependencies from the container much easier as you cannot resolve with primitives parameters in a way that is any more readable. The aim of this commit is to change as little as possible with the end result, loggers that were newed up for the parent object were given the same name. Objects that used the base or app loggers, were given a new logger with an appropriate name. Also removed some unused dependencies.
757 lines
27 KiB
C#
757 lines
27 KiB
C#
using System;
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using System.Collections.Concurrent;
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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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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Common.Net;
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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.Diagnostics;
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using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.MediaInfo;
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using MediaBrowser.Model.Serialization;
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using Microsoft.Extensions.Logging;
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using UtfUnknown;
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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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private readonly IJsonSerializer _json;
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private readonly IHttpClient _httpClient;
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private readonly IMediaSourceManager _mediaSourceManager;
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private readonly IProcessFactory _processFactory;
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public SubtitleEncoder(
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ILibraryManager libraryManager,
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ILoggerFactory loggerFactory,
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IApplicationPaths appPaths,
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IFileSystem fileSystem,
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IMediaEncoder mediaEncoder,
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IJsonSerializer json,
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IHttpClient httpClient,
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IMediaSourceManager mediaSourceManager,
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IProcessFactory processFactory)
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{
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_libraryManager = libraryManager;
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_logger = loggerFactory.CreateLogger(nameof(SubtitleEncoder));
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_appPaths = appPaths;
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_fileSystem = fileSystem;
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_mediaEncoder = mediaEncoder;
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_json = json;
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_httpClient = httpClient;
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_mediaSourceManager = mediaSourceManager;
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_processFactory = processFactory;
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}
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private string SubtitleCachePath => Path.Combine(_appPaths.DataPath, "subtitles");
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private Stream ConvertSubtitles(Stream stream,
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string inputFormat,
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string outputFormat,
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long startTimeTicks,
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long endTimeTicks,
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bool preserveOriginalTimestamps,
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CancellationToken cancellationToken)
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{
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var ms = new MemoryStream();
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try
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{
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var reader = GetReader(inputFormat, true);
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var trackInfo = reader.Parse(stream, cancellationToken);
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FilterEvents(trackInfo, startTimeTicks, endTimeTicks, preserveOriginalTimestamps);
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var writer = GetWriter(outputFormat);
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writer.Write(trackInfo, ms, cancellationToken);
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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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private void FilterEvents(SubtitleTrackInfo track, long startPositionTicks, long endTimeTicks, bool preserveTimestamps)
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{
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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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.ToArray();
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if (endTimeTicks > 0)
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{
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track.TrackEvents = track.TrackEvents
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.TakeWhile(i => i.StartPositionTicks <= endTimeTicks)
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.ToArray();
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}
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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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}
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async Task<Stream> ISubtitleEncoder.GetSubtitles(BaseItem item, string mediaSourceId, int subtitleStreamIndex, string outputFormat, long startTimeTicks, long endTimeTicks, bool preserveOriginalTimestamps, CancellationToken cancellationToken)
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{
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if (item == null)
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{
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throw new ArgumentNullException(nameof(item));
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}
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if (string.IsNullOrWhiteSpace(mediaSourceId))
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{
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throw new ArgumentNullException(nameof(mediaSourceId));
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}
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// TODO network path substition useful ?
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var mediaSources = await _mediaSourceManager.GetPlayackMediaSources(item, null, true, true, cancellationToken).ConfigureAwait(false);
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var mediaSource = mediaSources
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.First(i => string.Equals(i.Id, mediaSourceId, StringComparison.OrdinalIgnoreCase));
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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 subtitle = await GetSubtitleStream(mediaSource, subtitleStream, cancellationToken)
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.ConfigureAwait(false);
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var inputFormat = subtitle.format;
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var writer = TryGetWriter(outputFormat);
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// Return the original if we don't have any way of converting it
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if (writer == null)
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{
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return subtitle.stream;
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}
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// Return the original if the same format is being requested
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// Character encoding was already handled in GetSubtitleStream
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if (string.Equals(inputFormat, outputFormat, StringComparison.OrdinalIgnoreCase))
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{
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return subtitle.stream;
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}
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using (var stream = subtitle.stream)
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{
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return ConvertSubtitles(stream, inputFormat, outputFormat, startTimeTicks, endTimeTicks, preserveOriginalTimestamps, cancellationToken);
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}
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}
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private async Task<(Stream stream, string format)> GetSubtitleStream(
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MediaSourceInfo mediaSource,
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MediaStream subtitleStream,
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CancellationToken cancellationToken)
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{
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string[] inputFiles;
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if (mediaSource.VideoType.HasValue
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&& (mediaSource.VideoType.Value == VideoType.BluRay || mediaSource.VideoType.Value == VideoType.Dvd))
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{
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var mediaSourceItem = (Video)_libraryManager.GetItemById(new Guid(mediaSource.Id));
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inputFiles = mediaSourceItem.GetPlayableStreamFileNames(_mediaEncoder);
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}
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else
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{
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inputFiles = new[] { mediaSource.Path };
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}
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var fileInfo = await GetReadableFile(mediaSource.Path, inputFiles, mediaSource.Protocol, subtitleStream, cancellationToken).ConfigureAwait(false);
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var stream = await GetSubtitleStream(fileInfo.Path, subtitleStream.Language, fileInfo.Protocol, fileInfo.IsExternal, cancellationToken).ConfigureAwait(false);
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return (stream, fileInfo.Format);
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}
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private async Task<Stream> GetSubtitleStream(string path, string language, MediaProtocol protocol, bool requiresCharset, CancellationToken cancellationToken)
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{
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if (requiresCharset)
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{
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var bytes = await GetBytes(path, protocol, cancellationToken).ConfigureAwait(false);
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var charset = CharsetDetector.DetectFromBytes(bytes).Detected?.EncodingName;
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_logger.LogDebug("charset {CharSet} detected for {Path}", charset ?? "null", path);
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if (!string.IsNullOrEmpty(charset))
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{
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// Make sure we have all the code pages we can get
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Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
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using (var inputStream = new MemoryStream(bytes))
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using (var reader = new StreamReader(inputStream, Encoding.GetEncoding(charset)))
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{
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var text = await reader.ReadToEndAsync().ConfigureAwait(false);
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bytes = Encoding.UTF8.GetBytes(text);
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return new MemoryStream(bytes);
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}
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}
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}
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return _fileSystem.OpenRead(path);
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}
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private async Task<SubtitleInfo> GetReadableFile(
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string mediaPath,
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string[] inputFiles,
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MediaProtocol protocol,
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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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string outputFormat;
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string outputCodec;
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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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{
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// Extract
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outputCodec = "copy";
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outputFormat = subtitleStream.Codec;
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}
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else if (string.Equals(subtitleStream.Codec, "subrip", StringComparison.OrdinalIgnoreCase))
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{
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// Extract
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outputCodec = "copy";
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outputFormat = "srt";
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}
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else
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{
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// Extract
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outputCodec = "srt";
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outputFormat = "srt";
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}
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// Extract
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var outputPath = GetSubtitleCachePath(mediaPath, protocol, subtitleStream.Index, "." + outputFormat);
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await ExtractTextSubtitle(inputFiles, protocol, subtitleStream.Index, outputCodec, outputPath, cancellationToken)
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.ConfigureAwait(false);
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return new SubtitleInfo(outputPath, MediaProtocol.File, outputFormat, false);
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}
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var currentFormat = (Path.GetExtension(subtitleStream.Path) ?? subtitleStream.Codec)
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.TrimStart('.');
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if (GetReader(currentFormat, false) == null)
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{
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// Convert
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var outputPath = GetSubtitleCachePath(mediaPath, protocol, subtitleStream.Index, ".srt");
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await ConvertTextSubtitleToSrt(subtitleStream.Path, subtitleStream.Language, protocol, outputPath, cancellationToken).ConfigureAwait(false);
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return new SubtitleInfo(outputPath, MediaProtocol.File, "srt", true);
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}
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return new SubtitleInfo(subtitleStream.Path, protocol, currentFormat, true);
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}
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private struct SubtitleInfo
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{
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public SubtitleInfo(string path, MediaProtocol protocol, string format, bool isExternal)
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{
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Path = path;
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Protocol = protocol;
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Format = format;
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IsExternal = isExternal;
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}
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public string Path { get; set; }
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public MediaProtocol Protocol { get; set; }
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public string Format { get; set; }
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public bool IsExternal { get; set; }
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}
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private ISubtitleParser GetReader(string format, bool throwIfMissing)
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{
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if (string.IsNullOrEmpty(format))
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{
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throw new ArgumentNullException(nameof(format));
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}
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if (string.Equals(format, SubtitleFormat.SRT, StringComparison.OrdinalIgnoreCase))
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{
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return new SrtParser(_logger);
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}
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if (string.Equals(format, SubtitleFormat.SSA, StringComparison.OrdinalIgnoreCase))
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{
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return new SsaParser();
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}
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if (string.Equals(format, SubtitleFormat.ASS, StringComparison.OrdinalIgnoreCase))
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{
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return new AssParser();
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}
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if (throwIfMissing)
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{
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throw new ArgumentException("Unsupported format: " + format);
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}
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return null;
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}
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private ISubtitleWriter TryGetWriter(string format)
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{
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if (string.IsNullOrEmpty(format))
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{
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throw new ArgumentNullException(nameof(format));
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}
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if (string.Equals(format, "json", StringComparison.OrdinalIgnoreCase))
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{
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return new JsonWriter(_json);
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}
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if (string.Equals(format, SubtitleFormat.SRT, StringComparison.OrdinalIgnoreCase))
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{
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return new SrtWriter();
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}
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if (string.Equals(format, SubtitleFormat.VTT, StringComparison.OrdinalIgnoreCase))
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{
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return new VttWriter();
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}
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if (string.Equals(format, SubtitleFormat.TTML, StringComparison.OrdinalIgnoreCase))
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{
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return new TtmlWriter();
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}
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return null;
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}
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private ISubtitleWriter GetWriter(string format)
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{
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var writer = TryGetWriter(format);
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if (writer != null)
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{
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return writer;
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}
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throw new ArgumentException("Unsupported format: " + format);
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}
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/// <summary>
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/// The _semaphoreLocks
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/// </summary>
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private readonly ConcurrentDictionary<string, SemaphoreSlim> _semaphoreLocks =
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new ConcurrentDictionary<string, SemaphoreSlim>();
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/// <summary>
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/// Gets the lock.
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/// </summary>
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/// <param name="filename">The filename.</param>
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/// <returns>System.Object.</returns>
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private SemaphoreSlim GetLock(string filename)
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{
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return _semaphoreLocks.GetOrAdd(filename, key => new SemaphoreSlim(1, 1));
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}
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/// <summary>
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/// Converts the text subtitle to SRT.
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/// </summary>
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/// <param name="inputPath">The input path.</param>
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/// <param name="inputProtocol">The input protocol.</param>
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/// <param name="outputPath">The output path.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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private async Task ConvertTextSubtitleToSrt(string inputPath, string language, MediaProtocol inputProtocol, string outputPath, CancellationToken cancellationToken)
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{
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var semaphore = GetLock(outputPath);
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await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
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try
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{
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if (!_fileSystem.FileExists(outputPath))
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{
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await ConvertTextSubtitleToSrtInternal(inputPath, language, inputProtocol, outputPath, cancellationToken).ConfigureAwait(false);
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}
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}
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finally
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{
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semaphore.Release();
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}
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}
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/// <summary>
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/// Converts the text subtitle to SRT internal.
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/// </summary>
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/// <param name="inputPath">The input path.</param>
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/// <param name="inputProtocol">The input protocol.</param>
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/// <param name="outputPath">The output path.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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/// <exception cref="ArgumentNullException">
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/// inputPath
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/// or
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/// outputPath
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/// </exception>
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private async Task ConvertTextSubtitleToSrtInternal(string inputPath, string language, MediaProtocol inputProtocol, string outputPath, CancellationToken cancellationToken)
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{
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if (string.IsNullOrEmpty(inputPath))
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{
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throw new ArgumentNullException(nameof(inputPath));
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}
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if (string.IsNullOrEmpty(outputPath))
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{
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throw new ArgumentNullException(nameof(outputPath));
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}
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_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(outputPath));
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var encodingParam = await GetSubtitleFileCharacterSet(inputPath, language, inputProtocol, cancellationToken).ConfigureAwait(false);
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if (!string.IsNullOrEmpty(encodingParam))
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{
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encodingParam = " -sub_charenc " + encodingParam;
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}
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var process = _processFactory.Create(new ProcessOptions
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{
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CreateNoWindow = true,
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UseShellExecute = false,
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FileName = _mediaEncoder.EncoderPath,
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Arguments = string.Format("{0} -i \"{1}\" -c:s srt \"{2}\"", encodingParam, inputPath, outputPath),
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IsHidden = true,
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ErrorDialog = false
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});
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_logger.LogInformation("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
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try
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{
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process.Start();
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error starting ffmpeg");
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throw;
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}
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var ranToCompletion = await process.WaitForExitAsync(300000).ConfigureAwait(false);
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if (!ranToCompletion)
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{
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try
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{
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_logger.LogInformation("Killing ffmpeg subtitle conversion process");
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process.Kill();
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error killing subtitle conversion process");
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}
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}
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var exitCode = ranToCompletion ? process.ExitCode : -1;
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process.Dispose();
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var failed = false;
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if (exitCode == -1)
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{
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failed = true;
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if (_fileSystem.FileExists(outputPath))
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{
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try
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{
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_logger.LogInformation("Deleting converted subtitle due to failure: ", outputPath);
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_fileSystem.DeleteFile(outputPath);
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}
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catch (IOException ex)
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{
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_logger.LogError(ex, "Error deleting converted subtitle {Path}", outputPath);
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}
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}
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}
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else if (!_fileSystem.FileExists(outputPath))
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{
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failed = true;
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}
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if (failed)
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{
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var msg = string.Format("ffmpeg subtitle conversion failed for {Path}", inputPath);
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_logger.LogError(msg);
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throw new Exception(msg);
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}
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await SetAssFont(outputPath).ConfigureAwait(false);
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_logger.LogInformation("ffmpeg subtitle conversion succeeded for {Path}", inputPath);
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}
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/// <summary>
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/// Extracts the text subtitle.
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/// </summary>
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/// <param name="inputFiles">The input files.</param>
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/// <param name="protocol">The protocol.</param>
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/// <param name="subtitleStreamIndex">Index of the subtitle stream.</param>
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/// <param name="outputCodec">The output codec.</param>
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/// <param name="outputPath">The output path.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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/// <exception cref="ArgumentException">Must use inputPath list overload</exception>
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private async Task ExtractTextSubtitle(
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string[] inputFiles,
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MediaProtocol protocol,
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int subtitleStreamIndex,
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string outputCodec,
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string outputPath,
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CancellationToken cancellationToken)
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{
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var semaphore = GetLock(outputPath);
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await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
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try
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{
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if (!_fileSystem.FileExists(outputPath))
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{
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await ExtractTextSubtitleInternal(_mediaEncoder.GetInputArgument(inputFiles, protocol), subtitleStreamIndex, outputCodec, outputPath, cancellationToken).ConfigureAwait(false);
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}
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}
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finally
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{
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semaphore.Release();
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}
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}
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|
private async Task ExtractTextSubtitleInternal(
|
|
string inputPath,
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|
int subtitleStreamIndex,
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|
string outputCodec,
|
|
string outputPath,
|
|
CancellationToken cancellationToken)
|
|
{
|
|
if (string.IsNullOrEmpty(inputPath))
|
|
{
|
|
throw new ArgumentNullException(nameof(inputPath));
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|
}
|
|
|
|
if (string.IsNullOrEmpty(outputPath))
|
|
{
|
|
throw new ArgumentNullException(nameof(outputPath));
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|
}
|
|
|
|
_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(outputPath));
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|
|
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var processArgs = string.Format("-i {0} -map 0:{1} -an -vn -c:s {2} \"{3}\"", inputPath,
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subtitleStreamIndex, outputCodec, outputPath);
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|
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|
var process = _processFactory.Create(new ProcessOptions
|
|
{
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CreateNoWindow = true,
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UseShellExecute = false,
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|
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|
FileName = _mediaEncoder.EncoderPath,
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Arguments = processArgs,
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IsHidden = true,
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ErrorDialog = false
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|
});
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|
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|
_logger.LogInformation("{File} {Arguments}", process.StartInfo.FileName, process.StartInfo.Arguments);
|
|
|
|
try
|
|
{
|
|
process.Start();
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|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.LogError(ex, "Error starting ffmpeg");
|
|
|
|
throw;
|
|
}
|
|
|
|
var ranToCompletion = await process.WaitForExitAsync(300000).ConfigureAwait(false);
|
|
|
|
if (!ranToCompletion)
|
|
{
|
|
try
|
|
{
|
|
_logger.LogWarning("Killing ffmpeg subtitle extraction process");
|
|
|
|
process.Kill();
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.LogError(ex, "Error killing subtitle extraction process");
|
|
}
|
|
}
|
|
|
|
var exitCode = ranToCompletion ? process.ExitCode : -1;
|
|
|
|
process.Dispose();
|
|
|
|
var failed = false;
|
|
|
|
if (exitCode == -1)
|
|
{
|
|
failed = true;
|
|
|
|
try
|
|
{
|
|
_logger.LogWarning("Deleting extracted subtitle due to failure: {Path}", outputPath);
|
|
_fileSystem.DeleteFile(outputPath);
|
|
}
|
|
catch (FileNotFoundException)
|
|
{
|
|
|
|
}
|
|
catch (IOException ex)
|
|
{
|
|
_logger.LogError(ex, "Error deleting extracted subtitle {Path}", outputPath);
|
|
}
|
|
}
|
|
else if (!_fileSystem.FileExists(outputPath))
|
|
{
|
|
failed = true;
|
|
}
|
|
|
|
if (failed)
|
|
{
|
|
var msg = $"ffmpeg subtitle extraction failed for {inputPath} to {outputPath}";
|
|
|
|
_logger.LogError(msg);
|
|
|
|
throw new Exception(msg);
|
|
}
|
|
else
|
|
{
|
|
var msg = $"ffmpeg subtitle extraction completed for {inputPath} to {outputPath}";
|
|
|
|
_logger.LogInformation(msg);
|
|
}
|
|
|
|
if (string.Equals(outputCodec, "ass", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
await SetAssFont(outputPath).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the ass font.
|
|
/// </summary>
|
|
/// <param name="file">The file.</param>
|
|
/// <returns>Task.</returns>
|
|
private async Task SetAssFont(string file)
|
|
{
|
|
_logger.LogInformation("Setting ass font within {File}", file);
|
|
|
|
string text;
|
|
Encoding encoding;
|
|
|
|
using (var fileStream = _fileSystem.OpenRead(file))
|
|
using (var reader = new StreamReader(fileStream, true))
|
|
{
|
|
encoding = reader.CurrentEncoding;
|
|
|
|
text = await reader.ReadToEndAsync().ConfigureAwait(false);
|
|
}
|
|
|
|
var newText = text.Replace(",Arial,", ",Arial Unicode MS,");
|
|
|
|
if (!string.Equals(text, newText))
|
|
{
|
|
using (var fileStream = _fileSystem.GetFileStream(file, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read))
|
|
using (var writer = new StreamWriter(fileStream, encoding))
|
|
{
|
|
writer.Write(newText);
|
|
}
|
|
}
|
|
}
|
|
|
|
private string GetSubtitleCachePath(string mediaPath, MediaProtocol protocol, int subtitleStreamIndex, string outputSubtitleExtension)
|
|
{
|
|
if (protocol == MediaProtocol.File)
|
|
{
|
|
var ticksParam = string.Empty;
|
|
|
|
var date = _fileSystem.GetLastWriteTimeUtc(mediaPath);
|
|
|
|
var filename = (mediaPath + "_" + subtitleStreamIndex.ToString(CultureInfo.InvariantCulture) + "_" + date.Ticks.ToString(CultureInfo.InvariantCulture) + ticksParam).GetMD5() + outputSubtitleExtension;
|
|
|
|
var prefix = filename.Substring(0, 1);
|
|
|
|
return Path.Combine(SubtitleCachePath, prefix, filename);
|
|
}
|
|
else
|
|
{
|
|
var filename = (mediaPath + "_" + subtitleStreamIndex.ToString(CultureInfo.InvariantCulture)).GetMD5() + outputSubtitleExtension;
|
|
|
|
var prefix = filename.Substring(0, 1);
|
|
|
|
return Path.Combine(SubtitleCachePath, prefix, filename);
|
|
}
|
|
}
|
|
|
|
public async Task<string> GetSubtitleFileCharacterSet(string path, string language, MediaProtocol protocol, CancellationToken cancellationToken)
|
|
{
|
|
var bytes = await GetBytes(path, protocol, cancellationToken).ConfigureAwait(false);
|
|
|
|
var charset = CharsetDetector.DetectFromBytes(bytes).Detected?.EncodingName;
|
|
|
|
_logger.LogDebug("charset {0} detected for {Path}", charset ?? "null", path);
|
|
|
|
return charset;
|
|
}
|
|
|
|
private async Task<byte[]> GetBytes(string path, MediaProtocol protocol, CancellationToken cancellationToken)
|
|
{
|
|
if (protocol == MediaProtocol.Http)
|
|
{
|
|
var opts = new HttpRequestOptions()
|
|
{
|
|
Url = path,
|
|
CancellationToken = cancellationToken
|
|
};
|
|
using (var file = await _httpClient.Get(opts).ConfigureAwait(false))
|
|
using (var memoryStream = new MemoryStream())
|
|
{
|
|
await file.CopyToAsync(memoryStream).ConfigureAwait(false);
|
|
memoryStream.Position = 0;
|
|
|
|
return memoryStream.ToArray();
|
|
}
|
|
}
|
|
if (protocol == MediaProtocol.File)
|
|
{
|
|
return _fileSystem.ReadAllBytes(path);
|
|
}
|
|
|
|
throw new ArgumentOutOfRangeException(nameof(protocol));
|
|
}
|
|
}
|
|
}
|