| | | 1 | | #pragma warning disable CS1591 |
| | | 2 | | |
| | | 3 | | using System; |
| | | 4 | | using System.Collections.Generic; |
| | | 5 | | using System.Diagnostics; |
| | | 6 | | using System.Diagnostics.CodeAnalysis; |
| | | 7 | | using System.Globalization; |
| | | 8 | | using System.IO; |
| | | 9 | | using System.Linq; |
| | | 10 | | using System.Net.Http; |
| | | 11 | | using System.Text; |
| | | 12 | | using System.Threading; |
| | | 13 | | using System.Threading.Tasks; |
| | | 14 | | using AsyncKeyedLock; |
| | | 15 | | using MediaBrowser.Common; |
| | | 16 | | using MediaBrowser.Common.Configuration; |
| | | 17 | | using MediaBrowser.Common.Extensions; |
| | | 18 | | using MediaBrowser.Common.Net; |
| | | 19 | | using MediaBrowser.Controller.Entities; |
| | | 20 | | using MediaBrowser.Controller.Library; |
| | | 21 | | using MediaBrowser.Controller.MediaEncoding; |
| | | 22 | | using MediaBrowser.Model.Dto; |
| | | 23 | | using MediaBrowser.Model.Entities; |
| | | 24 | | using MediaBrowser.Model.IO; |
| | | 25 | | using MediaBrowser.Model.MediaInfo; |
| | | 26 | | using Microsoft.Extensions.Logging; |
| | | 27 | | using UtfUnknown; |
| | | 28 | | |
| | | 29 | | namespace MediaBrowser.MediaEncoding.Subtitles |
| | | 30 | | { |
| | | 31 | | public sealed class SubtitleEncoder : ISubtitleEncoder, IDisposable |
| | | 32 | | { |
| | | 33 | | private readonly ILogger<SubtitleEncoder> _logger; |
| | | 34 | | private readonly IApplicationPaths _appPaths; |
| | | 35 | | private readonly IFileSystem _fileSystem; |
| | | 36 | | private readonly IMediaEncoder _mediaEncoder; |
| | | 37 | | private readonly IHttpClientFactory _httpClientFactory; |
| | | 38 | | private readonly IMediaSourceManager _mediaSourceManager; |
| | | 39 | | private readonly ISubtitleParser _subtitleParser; |
| | | 40 | | |
| | | 41 | | /// <summary> |
| | | 42 | | /// The _semaphoreLocks. |
| | | 43 | | /// </summary> |
| | 25 | 44 | | private readonly AsyncKeyedLocker<string> _semaphoreLocks = new(o => |
| | 25 | 45 | | { |
| | 25 | 46 | | o.PoolSize = 20; |
| | 25 | 47 | | o.PoolInitialFill = 1; |
| | 25 | 48 | | }); |
| | | 49 | | |
| | | 50 | | public SubtitleEncoder( |
| | | 51 | | ILogger<SubtitleEncoder> logger, |
| | | 52 | | IApplicationPaths appPaths, |
| | | 53 | | IFileSystem fileSystem, |
| | | 54 | | IMediaEncoder mediaEncoder, |
| | | 55 | | IHttpClientFactory httpClientFactory, |
| | | 56 | | IMediaSourceManager mediaSourceManager, |
| | | 57 | | ISubtitleParser subtitleParser) |
| | | 58 | | { |
| | 25 | 59 | | _logger = logger; |
| | 25 | 60 | | _appPaths = appPaths; |
| | 25 | 61 | | _fileSystem = fileSystem; |
| | 25 | 62 | | _mediaEncoder = mediaEncoder; |
| | 25 | 63 | | _httpClientFactory = httpClientFactory; |
| | 25 | 64 | | _mediaSourceManager = mediaSourceManager; |
| | 25 | 65 | | _subtitleParser = subtitleParser; |
| | 25 | 66 | | } |
| | | 67 | | |
| | 0 | 68 | | private string SubtitleCachePath => Path.Combine(_appPaths.DataPath, "subtitles"); |
| | | 69 | | |
| | | 70 | | private MemoryStream ConvertSubtitles( |
| | | 71 | | Stream stream, |
| | | 72 | | string inputFormat, |
| | | 73 | | string outputFormat, |
| | | 74 | | long startTimeTicks, |
| | | 75 | | long endTimeTicks, |
| | | 76 | | bool preserveOriginalTimestamps, |
| | | 77 | | CancellationToken cancellationToken) |
| | | 78 | | { |
| | 0 | 79 | | var ms = new MemoryStream(); |
| | | 80 | | |
| | | 81 | | try |
| | | 82 | | { |
| | 0 | 83 | | var trackInfo = _subtitleParser.Parse(stream, inputFormat); |
| | | 84 | | |
| | 0 | 85 | | FilterEvents(trackInfo, startTimeTicks, endTimeTicks, preserveOriginalTimestamps); |
| | | 86 | | |
| | 0 | 87 | | var writer = GetWriter(outputFormat); |
| | | 88 | | |
| | 0 | 89 | | writer.Write(trackInfo, ms, cancellationToken); |
| | 0 | 90 | | ms.Position = 0; |
| | 0 | 91 | | } |
| | 0 | 92 | | catch |
| | | 93 | | { |
| | 0 | 94 | | ms.Dispose(); |
| | 0 | 95 | | throw; |
| | | 96 | | } |
| | | 97 | | |
| | 0 | 98 | | return ms; |
| | | 99 | | } |
| | | 100 | | |
| | | 101 | | private void FilterEvents(SubtitleTrackInfo track, long startPositionTicks, long endTimeTicks, bool preserveTime |
| | | 102 | | { |
| | | 103 | | // Drop subs that are earlier than what we're looking for |
| | 0 | 104 | | track.TrackEvents = track.TrackEvents |
| | 0 | 105 | | .SkipWhile(i => (i.StartPositionTicks - startPositionTicks) < 0 || (i.EndPositionTicks - startPositionTi |
| | 0 | 106 | | .ToArray(); |
| | | 107 | | |
| | 0 | 108 | | if (endTimeTicks > 0) |
| | | 109 | | { |
| | 0 | 110 | | track.TrackEvents = track.TrackEvents |
| | 0 | 111 | | .TakeWhile(i => i.StartPositionTicks <= endTimeTicks) |
| | 0 | 112 | | .ToArray(); |
| | | 113 | | } |
| | | 114 | | |
| | 0 | 115 | | if (!preserveTimestamps) |
| | | 116 | | { |
| | 0 | 117 | | foreach (var trackEvent in track.TrackEvents) |
| | | 118 | | { |
| | 0 | 119 | | trackEvent.EndPositionTicks -= startPositionTicks; |
| | 0 | 120 | | trackEvent.StartPositionTicks -= startPositionTicks; |
| | | 121 | | } |
| | | 122 | | } |
| | 0 | 123 | | } |
| | | 124 | | |
| | | 125 | | async Task<Stream> ISubtitleEncoder.GetSubtitles(BaseItem item, string mediaSourceId, int subtitleStreamIndex, s |
| | | 126 | | { |
| | | 127 | | ArgumentNullException.ThrowIfNull(item); |
| | | 128 | | |
| | | 129 | | if (string.IsNullOrWhiteSpace(mediaSourceId)) |
| | | 130 | | { |
| | | 131 | | throw new ArgumentNullException(nameof(mediaSourceId)); |
| | | 132 | | } |
| | | 133 | | |
| | | 134 | | var mediaSources = await _mediaSourceManager.GetPlaybackMediaSources(item, null, true, false, cancellationTo |
| | | 135 | | |
| | | 136 | | var mediaSource = mediaSources |
| | | 137 | | .First(i => string.Equals(i.Id, mediaSourceId, StringComparison.OrdinalIgnoreCase)); |
| | | 138 | | |
| | | 139 | | var subtitleStream = mediaSource.MediaStreams |
| | | 140 | | .First(i => i.Type == MediaStreamType.Subtitle && i.Index == subtitleStreamIndex); |
| | | 141 | | |
| | | 142 | | var (stream, inputFormat) = await GetSubtitleStream(mediaSource, subtitleStream, cancellationToken) |
| | | 143 | | .ConfigureAwait(false); |
| | | 144 | | |
| | | 145 | | // Return the original if the same format is being requested |
| | | 146 | | // Character encoding was already handled in GetSubtitleStream |
| | | 147 | | if (string.Equals(inputFormat, outputFormat, StringComparison.OrdinalIgnoreCase)) |
| | | 148 | | { |
| | | 149 | | return stream; |
| | | 150 | | } |
| | | 151 | | |
| | | 152 | | using (stream) |
| | | 153 | | { |
| | | 154 | | return ConvertSubtitles(stream, inputFormat, outputFormat, startTimeTicks, endTimeTicks, preserveOrigina |
| | | 155 | | } |
| | | 156 | | } |
| | | 157 | | |
| | | 158 | | private async Task<(Stream Stream, string Format)> GetSubtitleStream( |
| | | 159 | | MediaSourceInfo mediaSource, |
| | | 160 | | MediaStream subtitleStream, |
| | | 161 | | CancellationToken cancellationToken) |
| | | 162 | | { |
| | | 163 | | var fileInfo = await GetReadableFile(mediaSource, subtitleStream, cancellationToken).ConfigureAwait(false); |
| | | 164 | | |
| | | 165 | | var stream = await GetSubtitleStream(fileInfo, cancellationToken).ConfigureAwait(false); |
| | | 166 | | |
| | | 167 | | return (stream, fileInfo.Format); |
| | | 168 | | } |
| | | 169 | | |
| | | 170 | | private async Task<Stream> GetSubtitleStream(SubtitleInfo fileInfo, CancellationToken cancellationToken) |
| | | 171 | | { |
| | | 172 | | if (fileInfo.IsExternal) |
| | | 173 | | { |
| | | 174 | | using (var stream = await GetStream(fileInfo.Path, fileInfo.Protocol, cancellationToken).ConfigureAwait( |
| | | 175 | | { |
| | | 176 | | var result = CharsetDetector.DetectFromStream(stream).Detected; |
| | | 177 | | stream.Position = 0; |
| | | 178 | | |
| | | 179 | | if (result is not null) |
| | | 180 | | { |
| | | 181 | | _logger.LogDebug("charset {CharSet} detected for {Path}", result.EncodingName, fileInfo.Path); |
| | | 182 | | |
| | | 183 | | using var reader = new StreamReader(stream, result.Encoding); |
| | | 184 | | var text = await reader.ReadToEndAsync(cancellationToken).ConfigureAwait(false); |
| | | 185 | | |
| | | 186 | | return new MemoryStream(Encoding.UTF8.GetBytes(text)); |
| | | 187 | | } |
| | | 188 | | } |
| | | 189 | | } |
| | | 190 | | |
| | | 191 | | return AsyncFile.OpenRead(fileInfo.Path); |
| | | 192 | | } |
| | | 193 | | |
| | | 194 | | internal async Task<SubtitleInfo> GetReadableFile( |
| | | 195 | | MediaSourceInfo mediaSource, |
| | | 196 | | MediaStream subtitleStream, |
| | | 197 | | CancellationToken cancellationToken) |
| | | 198 | | { |
| | | 199 | | if (!subtitleStream.IsExternal || subtitleStream.Path.EndsWith(".mks", StringComparison.OrdinalIgnoreCase)) |
| | | 200 | | { |
| | | 201 | | await ExtractAllExtractableSubtitles(mediaSource, cancellationToken).ConfigureAwait(false); |
| | | 202 | | |
| | | 203 | | var outputFileExtension = GetExtractableSubtitleFileExtension(subtitleStream); |
| | | 204 | | var outputFormat = GetExtractableSubtitleFormat(subtitleStream); |
| | | 205 | | var outputPath = GetSubtitleCachePath(mediaSource, subtitleStream.Index, "." + outputFileExtension); |
| | | 206 | | |
| | | 207 | | return new SubtitleInfo() |
| | | 208 | | { |
| | | 209 | | Path = outputPath, |
| | | 210 | | Protocol = MediaProtocol.File, |
| | | 211 | | Format = outputFormat, |
| | | 212 | | IsExternal = false |
| | | 213 | | }; |
| | | 214 | | } |
| | | 215 | | |
| | | 216 | | var currentFormat = (Path.GetExtension(subtitleStream.Path) ?? subtitleStream.Codec) |
| | | 217 | | .TrimStart('.'); |
| | | 218 | | |
| | | 219 | | // Handle PGS subtitles as raw streams for the client to render |
| | | 220 | | if (MediaStream.IsPgsFormat(currentFormat)) |
| | | 221 | | { |
| | | 222 | | return new SubtitleInfo() |
| | | 223 | | { |
| | | 224 | | Path = subtitleStream.Path, |
| | | 225 | | Protocol = _mediaSourceManager.GetPathProtocol(subtitleStream.Path), |
| | | 226 | | Format = "pgssub", |
| | | 227 | | IsExternal = true |
| | | 228 | | }; |
| | | 229 | | } |
| | | 230 | | |
| | | 231 | | // Fallback to ffmpeg conversion |
| | | 232 | | if (!_subtitleParser.SupportsFileExtension(currentFormat)) |
| | | 233 | | { |
| | | 234 | | // Convert |
| | | 235 | | var outputPath = GetSubtitleCachePath(mediaSource, subtitleStream.Index, ".srt"); |
| | | 236 | | |
| | | 237 | | await ConvertTextSubtitleToSrt(subtitleStream, mediaSource, outputPath, cancellationToken).ConfigureAwai |
| | | 238 | | |
| | | 239 | | return new SubtitleInfo() |
| | | 240 | | { |
| | | 241 | | Path = outputPath, |
| | | 242 | | Protocol = MediaProtocol.File, |
| | | 243 | | Format = "srt", |
| | | 244 | | IsExternal = true |
| | | 245 | | }; |
| | | 246 | | } |
| | | 247 | | |
| | | 248 | | // It's possible that the subtitleStream and mediaSource don't share the same protocol (e.g. .STRM file with |
| | | 249 | | return new SubtitleInfo() |
| | | 250 | | { |
| | | 251 | | Path = subtitleStream.Path, |
| | | 252 | | Protocol = _mediaSourceManager.GetPathProtocol(subtitleStream.Path), |
| | | 253 | | Format = currentFormat, |
| | | 254 | | IsExternal = true |
| | | 255 | | }; |
| | | 256 | | } |
| | | 257 | | |
| | | 258 | | private bool TryGetWriter(string format, [NotNullWhen(true)] out ISubtitleWriter? value) |
| | | 259 | | { |
| | 0 | 260 | | ArgumentException.ThrowIfNullOrEmpty(format); |
| | | 261 | | |
| | 0 | 262 | | if (string.Equals(format, SubtitleFormat.ASS, StringComparison.OrdinalIgnoreCase)) |
| | | 263 | | { |
| | 0 | 264 | | value = new AssWriter(); |
| | 0 | 265 | | return true; |
| | | 266 | | } |
| | | 267 | | |
| | 0 | 268 | | if (string.Equals(format, "json", StringComparison.OrdinalIgnoreCase)) |
| | | 269 | | { |
| | 0 | 270 | | value = new JsonWriter(); |
| | 0 | 271 | | return true; |
| | | 272 | | } |
| | | 273 | | |
| | 0 | 274 | | if (string.Equals(format, SubtitleFormat.SRT, StringComparison.OrdinalIgnoreCase) || string.Equals(format, S |
| | | 275 | | { |
| | 0 | 276 | | value = new SrtWriter(); |
| | 0 | 277 | | return true; |
| | | 278 | | } |
| | | 279 | | |
| | 0 | 280 | | if (string.Equals(format, SubtitleFormat.SSA, StringComparison.OrdinalIgnoreCase)) |
| | | 281 | | { |
| | 0 | 282 | | value = new SsaWriter(); |
| | 0 | 283 | | return true; |
| | | 284 | | } |
| | | 285 | | |
| | 0 | 286 | | if (string.Equals(format, SubtitleFormat.VTT, StringComparison.OrdinalIgnoreCase) || string.Equals(format, S |
| | | 287 | | { |
| | 0 | 288 | | value = new VttWriter(); |
| | 0 | 289 | | return true; |
| | | 290 | | } |
| | | 291 | | |
| | 0 | 292 | | if (string.Equals(format, SubtitleFormat.TTML, StringComparison.OrdinalIgnoreCase)) |
| | | 293 | | { |
| | 0 | 294 | | value = new TtmlWriter(); |
| | 0 | 295 | | return true; |
| | | 296 | | } |
| | | 297 | | |
| | 0 | 298 | | value = null; |
| | 0 | 299 | | return false; |
| | | 300 | | } |
| | | 301 | | |
| | | 302 | | private ISubtitleWriter GetWriter(string format) |
| | | 303 | | { |
| | 0 | 304 | | if (TryGetWriter(format, out var writer)) |
| | | 305 | | { |
| | 0 | 306 | | return writer; |
| | | 307 | | } |
| | | 308 | | |
| | 0 | 309 | | throw new ArgumentException("Unsupported format: " + format); |
| | | 310 | | } |
| | | 311 | | |
| | | 312 | | /// <summary> |
| | | 313 | | /// Converts the text subtitle to SRT. |
| | | 314 | | /// </summary> |
| | | 315 | | /// <param name="subtitleStream">The subtitle stream.</param> |
| | | 316 | | /// <param name="mediaSource">The input mediaSource.</param> |
| | | 317 | | /// <param name="outputPath">The output path.</param> |
| | | 318 | | /// <param name="cancellationToken">The cancellation token.</param> |
| | | 319 | | /// <returns>Task.</returns> |
| | | 320 | | private async Task ConvertTextSubtitleToSrt(MediaStream subtitleStream, MediaSourceInfo mediaSource, string outp |
| | | 321 | | { |
| | | 322 | | using (await _semaphoreLocks.LockAsync(outputPath, cancellationToken).ConfigureAwait(false)) |
| | | 323 | | { |
| | | 324 | | if (!File.Exists(outputPath)) |
| | | 325 | | { |
| | | 326 | | await ConvertTextSubtitleToSrtInternal(subtitleStream, mediaSource, outputPath, cancellationToken).C |
| | | 327 | | } |
| | | 328 | | } |
| | | 329 | | } |
| | | 330 | | |
| | | 331 | | /// <summary> |
| | | 332 | | /// Converts the text subtitle to SRT internal. |
| | | 333 | | /// </summary> |
| | | 334 | | /// <param name="subtitleStream">The subtitle stream.</param> |
| | | 335 | | /// <param name="mediaSource">The input mediaSource.</param> |
| | | 336 | | /// <param name="outputPath">The output path.</param> |
| | | 337 | | /// <param name="cancellationToken">The cancellation token.</param> |
| | | 338 | | /// <returns>Task.</returns> |
| | | 339 | | /// <exception cref="ArgumentNullException"> |
| | | 340 | | /// The <c>inputPath</c> or <c>outputPath</c> is <c>null</c>. |
| | | 341 | | /// </exception> |
| | | 342 | | private async Task ConvertTextSubtitleToSrtInternal(MediaStream subtitleStream, MediaSourceInfo mediaSource, str |
| | | 343 | | { |
| | | 344 | | var inputPath = subtitleStream.Path; |
| | | 345 | | ArgumentException.ThrowIfNullOrEmpty(inputPath); |
| | | 346 | | |
| | | 347 | | ArgumentException.ThrowIfNullOrEmpty(outputPath); |
| | | 348 | | |
| | | 349 | | Directory.CreateDirectory(Path.GetDirectoryName(outputPath) ?? throw new ArgumentException($"Provided path ( |
| | | 350 | | |
| | | 351 | | var encodingParam = await GetSubtitleFileCharacterSet(subtitleStream, subtitleStream.Language, mediaSource, |
| | | 352 | | |
| | | 353 | | // FFmpeg automatically convert character encoding when it is UTF-16 |
| | | 354 | | // If we specify character encoding, it rejects with "do not specify a character encoding" and "Unable to re |
| | | 355 | | if ((inputPath.EndsWith(".smi", StringComparison.Ordinal) || inputPath.EndsWith(".sami", StringComparison.Or |
| | | 356 | | (encodingParam.Equals("UTF-16BE", StringComparison.OrdinalIgnoreCase) || |
| | | 357 | | encodingParam.Equals("UTF-16LE", StringComparison.OrdinalIgnoreCase))) |
| | | 358 | | { |
| | | 359 | | encodingParam = string.Empty; |
| | | 360 | | } |
| | | 361 | | else if (!string.IsNullOrEmpty(encodingParam)) |
| | | 362 | | { |
| | | 363 | | encodingParam = " -sub_charenc " + encodingParam; |
| | | 364 | | } |
| | | 365 | | |
| | | 366 | | int exitCode; |
| | | 367 | | |
| | | 368 | | using (var process = new Process |
| | | 369 | | { |
| | | 370 | | StartInfo = new ProcessStartInfo |
| | | 371 | | { |
| | | 372 | | CreateNoWindow = true, |
| | | 373 | | UseShellExecute = false, |
| | | 374 | | FileName = _mediaEncoder.EncoderPath, |
| | | 375 | | Arguments = string.Format(CultureInfo.InvariantCulture, "{0} -i \"{1}\" -c:s srt \"{2}\"", encodingP |
| | | 376 | | WindowStyle = ProcessWindowStyle.Hidden, |
| | | 377 | | ErrorDialog = false |
| | | 378 | | }, |
| | | 379 | | EnableRaisingEvents = true |
| | | 380 | | }) |
| | | 381 | | { |
| | | 382 | | _logger.LogInformation("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments); |
| | | 383 | | |
| | | 384 | | try |
| | | 385 | | { |
| | | 386 | | process.Start(); |
| | | 387 | | } |
| | | 388 | | catch (Exception ex) |
| | | 389 | | { |
| | | 390 | | _logger.LogError(ex, "Error starting ffmpeg"); |
| | | 391 | | |
| | | 392 | | throw; |
| | | 393 | | } |
| | | 394 | | |
| | | 395 | | try |
| | | 396 | | { |
| | | 397 | | await process.WaitForExitAsync(TimeSpan.FromMinutes(30)).ConfigureAwait(false); |
| | | 398 | | exitCode = process.ExitCode; |
| | | 399 | | } |
| | | 400 | | catch (OperationCanceledException) |
| | | 401 | | { |
| | | 402 | | process.Kill(true); |
| | | 403 | | exitCode = -1; |
| | | 404 | | } |
| | | 405 | | } |
| | | 406 | | |
| | | 407 | | var failed = false; |
| | | 408 | | |
| | | 409 | | if (exitCode == -1) |
| | | 410 | | { |
| | | 411 | | failed = true; |
| | | 412 | | |
| | | 413 | | if (File.Exists(outputPath)) |
| | | 414 | | { |
| | | 415 | | try |
| | | 416 | | { |
| | | 417 | | _logger.LogInformation("Deleting converted subtitle due to failure: {Path}", outputPath); |
| | | 418 | | _fileSystem.DeleteFile(outputPath); |
| | | 419 | | } |
| | | 420 | | catch (IOException ex) |
| | | 421 | | { |
| | | 422 | | _logger.LogError(ex, "Error deleting converted subtitle {Path}", outputPath); |
| | | 423 | | } |
| | | 424 | | } |
| | | 425 | | } |
| | | 426 | | else if (!File.Exists(outputPath)) |
| | | 427 | | { |
| | | 428 | | failed = true; |
| | | 429 | | } |
| | | 430 | | |
| | | 431 | | if (failed) |
| | | 432 | | { |
| | | 433 | | _logger.LogError("ffmpeg subtitle conversion failed for {Path}", inputPath); |
| | | 434 | | |
| | | 435 | | throw new FfmpegException( |
| | | 436 | | string.Format(CultureInfo.InvariantCulture, "ffmpeg subtitle conversion failed for {0}", inputPath)) |
| | | 437 | | } |
| | | 438 | | |
| | | 439 | | await SetAssFont(outputPath, cancellationToken).ConfigureAwait(false); |
| | | 440 | | |
| | | 441 | | _logger.LogInformation("ffmpeg subtitle conversion succeeded for {Path}", inputPath); |
| | | 442 | | } |
| | | 443 | | |
| | | 444 | | private string GetExtractableSubtitleFormat(MediaStream subtitleStream) |
| | | 445 | | { |
| | 0 | 446 | | if (string.Equals(subtitleStream.Codec, "ass", StringComparison.OrdinalIgnoreCase) |
| | 0 | 447 | | || string.Equals(subtitleStream.Codec, "ssa", StringComparison.OrdinalIgnoreCase) |
| | 0 | 448 | | || string.Equals(subtitleStream.Codec, "pgssub", StringComparison.OrdinalIgnoreCase)) |
| | | 449 | | { |
| | 0 | 450 | | return subtitleStream.Codec; |
| | | 451 | | } |
| | | 452 | | else |
| | | 453 | | { |
| | 0 | 454 | | return "srt"; |
| | | 455 | | } |
| | | 456 | | } |
| | | 457 | | |
| | | 458 | | private string GetExtractableSubtitleFileExtension(MediaStream subtitleStream) |
| | | 459 | | { |
| | | 460 | | // Using .pgssub as file extension is not allowed by ffmpeg. The file extension for pgs subtitles is .sup. |
| | 0 | 461 | | if (string.Equals(subtitleStream.Codec, "pgssub", StringComparison.OrdinalIgnoreCase)) |
| | | 462 | | { |
| | 0 | 463 | | return "sup"; |
| | | 464 | | } |
| | | 465 | | else |
| | | 466 | | { |
| | 0 | 467 | | return GetExtractableSubtitleFormat(subtitleStream); |
| | | 468 | | } |
| | | 469 | | } |
| | | 470 | | |
| | | 471 | | private bool IsCodecCopyable(string codec) |
| | | 472 | | { |
| | 0 | 473 | | return string.Equals(codec, "ass", StringComparison.OrdinalIgnoreCase) |
| | 0 | 474 | | || string.Equals(codec, "ssa", StringComparison.OrdinalIgnoreCase) |
| | 0 | 475 | | || string.Equals(codec, "srt", StringComparison.OrdinalIgnoreCase) |
| | 0 | 476 | | || string.Equals(codec, "subrip", StringComparison.OrdinalIgnoreCase) |
| | 0 | 477 | | || string.Equals(codec, "pgssub", StringComparison.OrdinalIgnoreCase); |
| | | 478 | | } |
| | | 479 | | |
| | | 480 | | /// <summary> |
| | | 481 | | /// Extracts all extractable subtitles (text and pgs). |
| | | 482 | | /// </summary> |
| | | 483 | | /// <param name="mediaSource">The mediaSource.</param> |
| | | 484 | | /// <param name="cancellationToken">The cancellation token.</param> |
| | | 485 | | /// <returns>Task.</returns> |
| | | 486 | | private async Task ExtractAllExtractableSubtitles(MediaSourceInfo mediaSource, CancellationToken cancellationTok |
| | | 487 | | { |
| | | 488 | | var locks = new List<IDisposable>(); |
| | | 489 | | var extractableStreams = new List<MediaStream>(); |
| | | 490 | | |
| | | 491 | | try |
| | | 492 | | { |
| | | 493 | | var subtitleStreams = mediaSource.MediaStreams |
| | | 494 | | .Where(stream => stream is { IsExtractableSubtitleStream: true, SupportsExternalStream: true, IsExte |
| | | 495 | | |
| | | 496 | | foreach (var subtitleStream in subtitleStreams) |
| | | 497 | | { |
| | | 498 | | var outputPath = GetSubtitleCachePath(mediaSource, subtitleStream.Index, "." + GetExtractableSubtitl |
| | | 499 | | |
| | | 500 | | var releaser = await _semaphoreLocks.LockAsync(outputPath, cancellationToken).ConfigureAwait(false); |
| | | 501 | | |
| | | 502 | | if (File.Exists(outputPath)) |
| | | 503 | | { |
| | | 504 | | releaser.Dispose(); |
| | | 505 | | continue; |
| | | 506 | | } |
| | | 507 | | |
| | | 508 | | locks.Add(releaser); |
| | | 509 | | extractableStreams.Add(subtitleStream); |
| | | 510 | | } |
| | | 511 | | |
| | | 512 | | if (extractableStreams.Count > 0) |
| | | 513 | | { |
| | | 514 | | await ExtractAllExtractableSubtitlesInternal(mediaSource, extractableStreams, cancellationToken).Con |
| | | 515 | | } |
| | | 516 | | } |
| | | 517 | | catch (Exception ex) |
| | | 518 | | { |
| | | 519 | | _logger.LogWarning(ex, "Unable to get streams for File:{File}", mediaSource.Path); |
| | | 520 | | } |
| | | 521 | | finally |
| | | 522 | | { |
| | | 523 | | locks.ForEach(x => x.Dispose()); |
| | | 524 | | } |
| | | 525 | | } |
| | | 526 | | |
| | | 527 | | private async Task ExtractAllExtractableSubtitlesInternal( |
| | | 528 | | MediaSourceInfo mediaSource, |
| | | 529 | | List<MediaStream> subtitleStreams, |
| | | 530 | | CancellationToken cancellationToken) |
| | | 531 | | { |
| | | 532 | | var inputPath = _mediaEncoder.GetInputArgument(mediaSource.Path, mediaSource); |
| | | 533 | | var outputPaths = new List<string>(); |
| | | 534 | | var args = string.Format( |
| | | 535 | | CultureInfo.InvariantCulture, |
| | | 536 | | "-i {0} -copyts", |
| | | 537 | | inputPath); |
| | | 538 | | |
| | | 539 | | foreach (var subtitleStream in subtitleStreams) |
| | | 540 | | { |
| | | 541 | | var outputPath = GetSubtitleCachePath(mediaSource, subtitleStream.Index, "." + GetExtractableSubtitleFil |
| | | 542 | | var outputCodec = IsCodecCopyable(subtitleStream.Codec) ? "copy" : "srt"; |
| | | 543 | | var streamIndex = EncodingHelper.FindIndex(mediaSource.MediaStreams, subtitleStream); |
| | | 544 | | |
| | | 545 | | if (streamIndex == -1) |
| | | 546 | | { |
| | | 547 | | _logger.LogError("Cannot find subtitle stream index for {InputPath} ({Index}), skipping this stream" |
| | | 548 | | continue; |
| | | 549 | | } |
| | | 550 | | |
| | | 551 | | Directory.CreateDirectory(Path.GetDirectoryName(outputPath) ?? throw new FileNotFoundException($"Calcula |
| | | 552 | | |
| | | 553 | | outputPaths.Add(outputPath); |
| | | 554 | | args += string.Format( |
| | | 555 | | CultureInfo.InvariantCulture, |
| | | 556 | | " -map 0:{0} -an -vn -c:s {1} \"{2}\"", |
| | | 557 | | streamIndex, |
| | | 558 | | outputCodec, |
| | | 559 | | outputPath); |
| | | 560 | | } |
| | | 561 | | |
| | | 562 | | int exitCode; |
| | | 563 | | |
| | | 564 | | using (var process = new Process |
| | | 565 | | { |
| | | 566 | | StartInfo = new ProcessStartInfo |
| | | 567 | | { |
| | | 568 | | CreateNoWindow = true, |
| | | 569 | | UseShellExecute = false, |
| | | 570 | | FileName = _mediaEncoder.EncoderPath, |
| | | 571 | | Arguments = args, |
| | | 572 | | WindowStyle = ProcessWindowStyle.Hidden, |
| | | 573 | | ErrorDialog = false |
| | | 574 | | }, |
| | | 575 | | EnableRaisingEvents = true |
| | | 576 | | }) |
| | | 577 | | { |
| | | 578 | | _logger.LogInformation("{File} {Arguments}", process.StartInfo.FileName, process.StartInfo.Arguments); |
| | | 579 | | |
| | | 580 | | try |
| | | 581 | | { |
| | | 582 | | process.Start(); |
| | | 583 | | } |
| | | 584 | | catch (Exception ex) |
| | | 585 | | { |
| | | 586 | | _logger.LogError(ex, "Error starting ffmpeg"); |
| | | 587 | | |
| | | 588 | | throw; |
| | | 589 | | } |
| | | 590 | | |
| | | 591 | | try |
| | | 592 | | { |
| | | 593 | | await process.WaitForExitAsync(TimeSpan.FromMinutes(30)).ConfigureAwait(false); |
| | | 594 | | exitCode = process.ExitCode; |
| | | 595 | | } |
| | | 596 | | catch (OperationCanceledException) |
| | | 597 | | { |
| | | 598 | | process.Kill(true); |
| | | 599 | | exitCode = -1; |
| | | 600 | | } |
| | | 601 | | } |
| | | 602 | | |
| | | 603 | | var failed = false; |
| | | 604 | | |
| | | 605 | | if (exitCode == -1) |
| | | 606 | | { |
| | | 607 | | failed = true; |
| | | 608 | | |
| | | 609 | | foreach (var outputPath in outputPaths) |
| | | 610 | | { |
| | | 611 | | try |
| | | 612 | | { |
| | | 613 | | _logger.LogWarning("Deleting extracted subtitle due to failure: {Path}", outputPath); |
| | | 614 | | _fileSystem.DeleteFile(outputPath); |
| | | 615 | | } |
| | | 616 | | catch (FileNotFoundException) |
| | | 617 | | { |
| | | 618 | | } |
| | | 619 | | catch (IOException ex) |
| | | 620 | | { |
| | | 621 | | _logger.LogError(ex, "Error deleting extracted subtitle {Path}", outputPath); |
| | | 622 | | } |
| | | 623 | | } |
| | | 624 | | } |
| | | 625 | | else |
| | | 626 | | { |
| | | 627 | | foreach (var outputPath in outputPaths) |
| | | 628 | | { |
| | | 629 | | if (!File.Exists(outputPath)) |
| | | 630 | | { |
| | | 631 | | _logger.LogError("ffmpeg subtitle extraction failed for {InputPath} to {OutputPath}", inputPath, |
| | | 632 | | failed = true; |
| | | 633 | | continue; |
| | | 634 | | } |
| | | 635 | | |
| | | 636 | | if (outputPath.EndsWith("ass", StringComparison.OrdinalIgnoreCase)) |
| | | 637 | | { |
| | | 638 | | await SetAssFont(outputPath, cancellationToken).ConfigureAwait(false); |
| | | 639 | | } |
| | | 640 | | |
| | | 641 | | _logger.LogInformation("ffmpeg subtitle extraction completed for {InputPath} to {OutputPath}", input |
| | | 642 | | } |
| | | 643 | | } |
| | | 644 | | |
| | | 645 | | if (failed) |
| | | 646 | | { |
| | | 647 | | throw new FfmpegException( |
| | | 648 | | string.Format(CultureInfo.InvariantCulture, "ffmpeg subtitle extraction failed for {0}", inputPath)) |
| | | 649 | | } |
| | | 650 | | } |
| | | 651 | | |
| | | 652 | | /// <summary> |
| | | 653 | | /// Extracts the text subtitle. |
| | | 654 | | /// </summary> |
| | | 655 | | /// <param name="mediaSource">The mediaSource.</param> |
| | | 656 | | /// <param name="subtitleStream">The subtitle stream.</param> |
| | | 657 | | /// <param name="outputCodec">The output codec.</param> |
| | | 658 | | /// <param name="outputPath">The output path.</param> |
| | | 659 | | /// <param name="cancellationToken">The cancellation token.</param> |
| | | 660 | | /// <returns>Task.</returns> |
| | | 661 | | /// <exception cref="ArgumentException">Must use inputPath list overload.</exception> |
| | | 662 | | private async Task ExtractTextSubtitle( |
| | | 663 | | MediaSourceInfo mediaSource, |
| | | 664 | | MediaStream subtitleStream, |
| | | 665 | | string outputCodec, |
| | | 666 | | string outputPath, |
| | | 667 | | CancellationToken cancellationToken) |
| | | 668 | | { |
| | | 669 | | using (await _semaphoreLocks.LockAsync(outputPath, cancellationToken).ConfigureAwait(false)) |
| | | 670 | | { |
| | | 671 | | if (!File.Exists(outputPath)) |
| | | 672 | | { |
| | | 673 | | var subtitleStreamIndex = EncodingHelper.FindIndex(mediaSource.MediaStreams, subtitleStream); |
| | | 674 | | |
| | | 675 | | var args = _mediaEncoder.GetInputArgument(mediaSource.Path, mediaSource); |
| | | 676 | | |
| | | 677 | | if (subtitleStream.IsExternal) |
| | | 678 | | { |
| | | 679 | | args = _mediaEncoder.GetExternalSubtitleInputArgument(subtitleStream.Path); |
| | | 680 | | } |
| | | 681 | | |
| | | 682 | | await ExtractTextSubtitleInternal( |
| | | 683 | | args, |
| | | 684 | | subtitleStreamIndex, |
| | | 685 | | outputCodec, |
| | | 686 | | outputPath, |
| | | 687 | | cancellationToken).ConfigureAwait(false); |
| | | 688 | | } |
| | | 689 | | } |
| | | 690 | | } |
| | | 691 | | |
| | | 692 | | private async Task ExtractTextSubtitleInternal( |
| | | 693 | | string inputPath, |
| | | 694 | | int subtitleStreamIndex, |
| | | 695 | | string outputCodec, |
| | | 696 | | string outputPath, |
| | | 697 | | CancellationToken cancellationToken) |
| | | 698 | | { |
| | | 699 | | ArgumentException.ThrowIfNullOrEmpty(inputPath); |
| | | 700 | | |
| | | 701 | | ArgumentException.ThrowIfNullOrEmpty(outputPath); |
| | | 702 | | |
| | | 703 | | Directory.CreateDirectory(Path.GetDirectoryName(outputPath) ?? throw new ArgumentException($"Provided path ( |
| | | 704 | | |
| | | 705 | | var processArgs = string.Format( |
| | | 706 | | CultureInfo.InvariantCulture, |
| | | 707 | | "-i {0} -copyts -map 0:{1} -an -vn -c:s {2} \"{3}\"", |
| | | 708 | | inputPath, |
| | | 709 | | subtitleStreamIndex, |
| | | 710 | | outputCodec, |
| | | 711 | | outputPath); |
| | | 712 | | |
| | | 713 | | int exitCode; |
| | | 714 | | |
| | | 715 | | using (var process = new Process |
| | | 716 | | { |
| | | 717 | | StartInfo = new ProcessStartInfo |
| | | 718 | | { |
| | | 719 | | CreateNoWindow = true, |
| | | 720 | | UseShellExecute = false, |
| | | 721 | | FileName = _mediaEncoder.EncoderPath, |
| | | 722 | | Arguments = processArgs, |
| | | 723 | | WindowStyle = ProcessWindowStyle.Hidden, |
| | | 724 | | ErrorDialog = false |
| | | 725 | | }, |
| | | 726 | | EnableRaisingEvents = true |
| | | 727 | | }) |
| | | 728 | | { |
| | | 729 | | _logger.LogInformation("{File} {Arguments}", process.StartInfo.FileName, process.StartInfo.Arguments); |
| | | 730 | | |
| | | 731 | | try |
| | | 732 | | { |
| | | 733 | | process.Start(); |
| | | 734 | | } |
| | | 735 | | catch (Exception ex) |
| | | 736 | | { |
| | | 737 | | _logger.LogError(ex, "Error starting ffmpeg"); |
| | | 738 | | |
| | | 739 | | throw; |
| | | 740 | | } |
| | | 741 | | |
| | | 742 | | try |
| | | 743 | | { |
| | | 744 | | await process.WaitForExitAsync(TimeSpan.FromMinutes(30)).ConfigureAwait(false); |
| | | 745 | | exitCode = process.ExitCode; |
| | | 746 | | } |
| | | 747 | | catch (OperationCanceledException) |
| | | 748 | | { |
| | | 749 | | process.Kill(true); |
| | | 750 | | exitCode = -1; |
| | | 751 | | } |
| | | 752 | | } |
| | | 753 | | |
| | | 754 | | var failed = false; |
| | | 755 | | |
| | | 756 | | if (exitCode == -1) |
| | | 757 | | { |
| | | 758 | | failed = true; |
| | | 759 | | |
| | | 760 | | try |
| | | 761 | | { |
| | | 762 | | _logger.LogWarning("Deleting extracted subtitle due to failure: {Path}", outputPath); |
| | | 763 | | _fileSystem.DeleteFile(outputPath); |
| | | 764 | | } |
| | | 765 | | catch (FileNotFoundException) |
| | | 766 | | { |
| | | 767 | | } |
| | | 768 | | catch (IOException ex) |
| | | 769 | | { |
| | | 770 | | _logger.LogError(ex, "Error deleting extracted subtitle {Path}", outputPath); |
| | | 771 | | } |
| | | 772 | | } |
| | | 773 | | else if (!File.Exists(outputPath)) |
| | | 774 | | { |
| | | 775 | | failed = true; |
| | | 776 | | } |
| | | 777 | | |
| | | 778 | | if (failed) |
| | | 779 | | { |
| | | 780 | | _logger.LogError("ffmpeg subtitle extraction failed for {InputPath} to {OutputPath}", inputPath, outputP |
| | | 781 | | |
| | | 782 | | throw new FfmpegException( |
| | | 783 | | string.Format(CultureInfo.InvariantCulture, "ffmpeg subtitle extraction failed for {0} to {1}", inpu |
| | | 784 | | } |
| | | 785 | | |
| | | 786 | | _logger.LogInformation("ffmpeg subtitle extraction completed for {InputPath} to {OutputPath}", inputPath, ou |
| | | 787 | | |
| | | 788 | | if (string.Equals(outputCodec, "ass", StringComparison.OrdinalIgnoreCase)) |
| | | 789 | | { |
| | | 790 | | await SetAssFont(outputPath, cancellationToken).ConfigureAwait(false); |
| | | 791 | | } |
| | | 792 | | } |
| | | 793 | | |
| | | 794 | | /// <summary> |
| | | 795 | | /// Sets the ass font. |
| | | 796 | | /// </summary> |
| | | 797 | | /// <param name="file">The file.</param> |
| | | 798 | | /// <param name="cancellationToken">The token to monitor for cancellation requests. The default value is <c>Syst |
| | | 799 | | /// <returns>Task.</returns> |
| | | 800 | | private async Task SetAssFont(string file, CancellationToken cancellationToken = default) |
| | | 801 | | { |
| | | 802 | | _logger.LogInformation("Setting ass font within {File}", file); |
| | | 803 | | |
| | | 804 | | string text; |
| | | 805 | | Encoding encoding; |
| | | 806 | | |
| | | 807 | | using (var fileStream = AsyncFile.OpenRead(file)) |
| | | 808 | | using (var reader = new StreamReader(fileStream, true)) |
| | | 809 | | { |
| | | 810 | | encoding = reader.CurrentEncoding; |
| | | 811 | | |
| | | 812 | | text = await reader.ReadToEndAsync(cancellationToken).ConfigureAwait(false); |
| | | 813 | | } |
| | | 814 | | |
| | | 815 | | var newText = text.Replace(",Arial,", ",Arial Unicode MS,", StringComparison.Ordinal); |
| | | 816 | | |
| | | 817 | | if (!string.Equals(text, newText, StringComparison.Ordinal)) |
| | | 818 | | { |
| | | 819 | | var fileStream = new FileStream(file, FileMode.Create, FileAccess.Write, FileShare.None, IODefaults.File |
| | | 820 | | await using (fileStream.ConfigureAwait(false)) |
| | | 821 | | { |
| | | 822 | | var writer = new StreamWriter(fileStream, encoding); |
| | | 823 | | await using (writer.ConfigureAwait(false)) |
| | | 824 | | { |
| | | 825 | | await writer.WriteAsync(newText.AsMemory(), cancellationToken).ConfigureAwait(false); |
| | | 826 | | } |
| | | 827 | | } |
| | | 828 | | } |
| | | 829 | | } |
| | | 830 | | |
| | | 831 | | private string GetSubtitleCachePath(MediaSourceInfo mediaSource, int subtitleStreamIndex, string outputSubtitleE |
| | | 832 | | { |
| | 0 | 833 | | if (mediaSource.Protocol == MediaProtocol.File) |
| | | 834 | | { |
| | 0 | 835 | | var ticksParam = string.Empty; |
| | | 836 | | |
| | 0 | 837 | | var date = _fileSystem.GetLastWriteTimeUtc(mediaSource.Path); |
| | | 838 | | |
| | 0 | 839 | | ReadOnlySpan<char> filename = (mediaSource.Path + "_" + subtitleStreamIndex.ToString(CultureInfo.Invaria |
| | | 840 | | |
| | 0 | 841 | | var prefix = filename.Slice(0, 1); |
| | | 842 | | |
| | 0 | 843 | | return Path.Join(SubtitleCachePath, prefix, filename); |
| | | 844 | | } |
| | | 845 | | else |
| | | 846 | | { |
| | 0 | 847 | | ReadOnlySpan<char> filename = (mediaSource.Path + "_" + subtitleStreamIndex.ToString(CultureInfo.Invaria |
| | | 848 | | |
| | 0 | 849 | | var prefix = filename.Slice(0, 1); |
| | | 850 | | |
| | 0 | 851 | | return Path.Join(SubtitleCachePath, prefix, filename); |
| | | 852 | | } |
| | | 853 | | } |
| | | 854 | | |
| | | 855 | | /// <inheritdoc /> |
| | | 856 | | public async Task<string> GetSubtitleFileCharacterSet(MediaStream subtitleStream, string language, MediaSourceIn |
| | | 857 | | { |
| | | 858 | | var subtitleCodec = subtitleStream.Codec; |
| | | 859 | | var path = subtitleStream.Path; |
| | | 860 | | |
| | | 861 | | if (path.EndsWith(".mks", StringComparison.OrdinalIgnoreCase)) |
| | | 862 | | { |
| | | 863 | | path = GetSubtitleCachePath(mediaSource, subtitleStream.Index, "." + subtitleCodec); |
| | | 864 | | await ExtractTextSubtitle(mediaSource, subtitleStream, subtitleCodec, path, cancellationToken) |
| | | 865 | | .ConfigureAwait(false); |
| | | 866 | | } |
| | | 867 | | |
| | | 868 | | using (var stream = await GetStream(path, mediaSource.Protocol, cancellationToken).ConfigureAwait(false)) |
| | | 869 | | { |
| | | 870 | | var charset = CharsetDetector.DetectFromStream(stream).Detected?.EncodingName ?? string.Empty; |
| | | 871 | | |
| | | 872 | | // UTF16 is automatically converted to UTF8 by FFmpeg, do not specify a character encoding |
| | | 873 | | if ((path.EndsWith(".ass", StringComparison.Ordinal) || path.EndsWith(".ssa", StringComparison.Ordinal) |
| | | 874 | | && (string.Equals(charset, "utf-16le", StringComparison.OrdinalIgnoreCase) |
| | | 875 | | || string.Equals(charset, "utf-16be", StringComparison.OrdinalIgnoreCase))) |
| | | 876 | | { |
| | | 877 | | charset = string.Empty; |
| | | 878 | | } |
| | | 879 | | |
| | | 880 | | _logger.LogDebug("charset {0} detected for {Path}", charset, path); |
| | | 881 | | |
| | | 882 | | return charset; |
| | | 883 | | } |
| | | 884 | | } |
| | | 885 | | |
| | | 886 | | private async Task<Stream> GetStream(string path, MediaProtocol protocol, CancellationToken cancellationToken) |
| | | 887 | | { |
| | | 888 | | switch (protocol) |
| | | 889 | | { |
| | | 890 | | case MediaProtocol.Http: |
| | | 891 | | { |
| | | 892 | | using var response = await _httpClientFactory.CreateClient(NamedClient.Default) |
| | | 893 | | .GetAsync(new Uri(path), cancellationToken) |
| | | 894 | | .ConfigureAwait(false); |
| | | 895 | | return await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false); |
| | | 896 | | } |
| | | 897 | | |
| | | 898 | | case MediaProtocol.File: |
| | | 899 | | return AsyncFile.OpenRead(path); |
| | | 900 | | default: |
| | | 901 | | throw new ArgumentOutOfRangeException(nameof(protocol)); |
| | | 902 | | } |
| | | 903 | | } |
| | | 904 | | |
| | | 905 | | public async Task<string> GetSubtitleFilePath(MediaStream subtitleStream, MediaSourceInfo mediaSource, Cancellat |
| | | 906 | | { |
| | | 907 | | var info = await GetReadableFile(mediaSource, subtitleStream, cancellationToken) |
| | | 908 | | .ConfigureAwait(false); |
| | | 909 | | return info.Path; |
| | | 910 | | } |
| | | 911 | | |
| | | 912 | | /// <inheritdoc /> |
| | | 913 | | public void Dispose() |
| | | 914 | | { |
| | 21 | 915 | | _semaphoreLocks.Dispose(); |
| | 21 | 916 | | } |
| | | 917 | | |
| | | 918 | | #pragma warning disable CA1034 // Nested types should not be visible |
| | | 919 | | // Only public for the unit tests |
| | | 920 | | public readonly record struct SubtitleInfo |
| | | 921 | | { |
| | | 922 | | public string Path { get; init; } |
| | | 923 | | |
| | | 924 | | public MediaProtocol Protocol { get; init; } |
| | | 925 | | |
| | | 926 | | public string Format { get; init; } |
| | | 927 | | |
| | | 928 | | public bool IsExternal { get; init; } |
| | | 929 | | } |
| | | 930 | | } |
| | | 931 | | } |