mirror of
https://github.com/jellyfin/jellyfin.git
synced 2025-12-29 04:04:47 +03:00
Support subtitle offset
This commit is contained in:
Luke Pulverenti
@@ -285,289 +285,6 @@ namespace MediaBrowser.MediaEncoding.Encoder
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return string.Empty;
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}
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/// <summary>
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/// Gets the subtitle language encoding param.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <param name="language">The language.</param>
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/// <returns>System.String.</returns>
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public string GetSubtitleLanguageEncodingParam(string path, string language)
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{
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if (GetFileEncoding(path).Equals(Encoding.UTF8))
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{
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return string.Empty;
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}
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switch (language.ToLower())
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{
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case "pol":
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case "cze":
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case "ces":
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case "slo":
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case "slk":
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case "hun":
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case "slv":
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case "srp":
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case "hrv":
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case "rum":
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case "ron":
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case "rup":
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case "alb":
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case "sqi":
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return "windows-1250";
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case "ara":
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return "windows-1256";
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case "heb":
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return "windows-1255";
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case "grc":
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case "gre":
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return "windows-1253";
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case "crh":
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case "ota":
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case "tur":
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return "windows-1254";
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case "rus":
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return "windows-1251";
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case "vie":
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return "windows-1258";
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case "kor":
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return "cp949";
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default:
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return "windows-1252";
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}
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}
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private static Encoding GetFileEncoding(string srcFile)
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{
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// *** Detect byte order mark if any - otherwise assume default
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var buffer = new byte[5];
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using (var file = new FileStream(srcFile, FileMode.Open))
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{
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file.Read(buffer, 0, 5);
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}
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if (buffer[0] == 0xef && buffer[1] == 0xbb && buffer[2] == 0xbf)
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return Encoding.UTF8;
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if (buffer[0] == 0xfe && buffer[1] == 0xff)
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return Encoding.Unicode;
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if (buffer[0] == 0 && buffer[1] == 0 && buffer[2] == 0xfe && buffer[3] == 0xff)
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return Encoding.UTF32;
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if (buffer[0] == 0x2b && buffer[1] == 0x2f && buffer[2] == 0x76)
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return Encoding.UTF7;
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// It's ok - anything aside from utf is ok since that's what we're looking for
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return Encoding.Default;
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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="type">The type.</param>
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/// <param name="subtitleStreamIndex">Index of the subtitle stream.</param>
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/// <param name="copySubtitleStream">if set to true, copy stream instead of converting.</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="System.ArgumentException">Must use inputPath list overload</exception>
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public async Task ExtractTextSubtitle(string[] inputFiles, InputType type, int subtitleStreamIndex,
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bool copySubtitleStream, 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 (!File.Exists(outputPath))
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{
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await
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ExtractTextSubtitleInternal(GetInputArgument(inputFiles, type), subtitleStreamIndex,
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copySubtitleStream, 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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/// Extracts the text subtitle.
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/// </summary>
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/// <param name="inputPath">The input path.</param>
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/// <param name="subtitleStreamIndex">Index of the subtitle stream.</param>
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/// <param name="copySubtitleStream">if set to true, copy stream instead of converting.</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="System.ArgumentNullException">inputPath
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/// or
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/// outputPath
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/// or
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/// cancellationToken</exception>
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/// <exception cref="System.ApplicationException"></exception>
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private async Task ExtractTextSubtitleInternal(string inputPath, int subtitleStreamIndex,
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bool copySubtitleStream, 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("inputPath");
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}
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if (string.IsNullOrEmpty(outputPath))
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{
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throw new ArgumentNullException("outputPath");
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}
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string processArgs = string.Format("-i {0} -map 0:{1} -an -vn -c:s ass \"{2}\"", inputPath,
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subtitleStreamIndex, outputPath);
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if (copySubtitleStream)
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{
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processArgs = string.Format("-i {0} -map 0:{1} -an -vn -c:s copy \"{2}\"", inputPath,
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subtitleStreamIndex, outputPath);
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}
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var process = new Process
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{
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StartInfo = new ProcessStartInfo
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{
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CreateNoWindow = true,
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UseShellExecute = false,
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RedirectStandardOutput = false,
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RedirectStandardError = true,
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FileName = FFMpegPath,
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Arguments = processArgs,
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WindowStyle = ProcessWindowStyle.Hidden,
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ErrorDialog = false
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}
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};
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_logger.Debug("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
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var logFilePath = Path.Combine(_appPaths.LogDirectoryPath, "ffmpeg-sub-extract-" + Guid.NewGuid() + ".txt");
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Directory.CreateDirectory(Path.GetDirectoryName(logFilePath));
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var logFileStream = _fileSystem.GetFileStream(logFilePath, FileMode.Create, FileAccess.Write, FileShare.Read,
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true);
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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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logFileStream.Dispose();
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_logger.ErrorException("Error starting ffmpeg", ex);
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throw;
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}
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process.StandardError.BaseStream.CopyToAsync(logFileStream);
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var ranToCompletion = process.WaitForExit(60000);
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if (!ranToCompletion)
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{
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try
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{
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_logger.Info("Killing ffmpeg subtitle extraction process");
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process.Kill();
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process.WaitForExit(1000);
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}
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catch (Exception ex)
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{
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_logger.ErrorException("Error killing subtitle extraction process", ex);
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}
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finally
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{
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logFileStream.Dispose();
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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 (File.Exists(outputPath))
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{
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try
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{
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_logger.Info("Deleting extracted subtitle due to failure: ", outputPath);
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File.Delete(outputPath);
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}
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catch (IOException ex)
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{
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_logger.ErrorException("Error deleting extracted subtitle {0}", ex, outputPath);
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}
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}
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}
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else if (!File.Exists(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 extraction failed for {0} to {1}", inputPath, outputPath);
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_logger.Error(msg);
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throw new ApplicationException(msg);
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}
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else
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{
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var msg = string.Format("ffmpeg subtitle extraction completed for {0} to {1}", inputPath, outputPath);
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_logger.Info(msg);
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}
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await SetAssFont(outputPath).ConfigureAwait(false);
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}
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/// <summary>
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/// Sets the ass font.
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/// </summary>
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/// <param name="file">The file.</param>
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/// <returns>Task.</returns>
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private async Task SetAssFont(string file)
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{
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_logger.Info("Setting ass font within {0}", file);
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string text;
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Encoding encoding;
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using (var reader = new StreamReader(file, detectEncodingFromByteOrderMarks: true))
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{
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encoding = reader.CurrentEncoding;
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text = await reader.ReadToEndAsync().ConfigureAwait(false);
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}
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var newText = text.Replace(",Arial,", ",Arial Unicode MS,");
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if (!string.Equals(text, newText))
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{
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using (var writer = new StreamWriter(file, false, encoding))
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{
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writer.Write(newText);
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}
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}
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}
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public Task<Stream> ExtractAudioImage(string path, CancellationToken cancellationToken)
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{
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return ExtractImage(new[] { path }, InputType.File, true, null, null, cancellationToken);
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