From febb6bced6d2eb0941ed30205558ff8cf045720b Mon Sep 17 00:00:00 2001 From: Bond_009 Date: Wed, 22 Jul 2020 13:34:51 +0200 Subject: [PATCH] Review usage of string.Substring (part 1) Reduced allocations by replacing string.Substring with ReadOnlySpan.Slice --- Emby.Dlna/Didl/DidlBuilder.cs | 3 +- Emby.Dlna/DlnaManager.cs | 6 ++-- Emby.Drawing/ImageProcessor.cs | 14 ++++---- Emby.Naming/TV/SeasonPathParser.cs | 2 +- .../Library/LibraryManager.cs | 4 +-- .../Library/MediaSourceManager.cs | 3 +- .../LiveTv/Listings/SchedulesDirect.cs | 4 +-- .../TunerHosts/HdHomerun/HdHomerunHost.cs | 9 +++-- .../LiveTv/TunerHosts/M3uParser.cs | 25 +++++++------ .../Localization/LocalizationManager.cs | 8 ++--- .../Networking/NetworkManager.cs | 2 +- .../Services/ServiceExec.cs | 8 ++++- .../Services/ServiceHandler.cs | 17 +++++---- .../Services/ServicePath.cs | 2 +- .../Playback/Hls/DynamicHlsService.cs | 2 +- MediaBrowser.Controller/Entities/BaseItem.cs | 16 +++++---- .../MediaEncoding/EncodingHelper.cs | 23 ++++++------ .../Subtitles/AssParser.cs | 4 +-- .../Subtitles/ParserValues.cs | 5 ++- .../Subtitles/SrtParser.cs | 11 +++--- .../Subtitles/SrtWriter.cs | 4 +++ .../Subtitles/SsaParser.cs | 36 ++++++++----------- .../Subtitles/SubtitleEncoder.cs | 4 ++- .../Subtitles/TtmlWriter.cs | 9 +++-- .../Subtitles/VttWriter.cs | 2 +- 25 files changed, 124 insertions(+), 99 deletions(-) diff --git a/Emby.Dlna/Didl/DidlBuilder.cs b/Emby.Dlna/Didl/DidlBuilder.cs index 66baa9512c..70e358019a 100644 --- a/Emby.Dlna/Didl/DidlBuilder.cs +++ b/Emby.Dlna/Didl/DidlBuilder.cs @@ -364,7 +364,8 @@ namespace Emby.Dlna.Didl writer.WriteAttributeString("bitrate", totalBitrate.Value.ToString(_usCulture)); } - var mediaProfile = _profile.GetVideoMediaProfile(streamInfo.Container, + var mediaProfile = _profile.GetVideoMediaProfile( + streamInfo.Container, streamInfo.TargetAudioCodec.FirstOrDefault(), streamInfo.TargetVideoCodec.FirstOrDefault(), streamInfo.TargetAudioBitrate, diff --git a/Emby.Dlna/DlnaManager.cs b/Emby.Dlna/DlnaManager.cs index 5911a73ef1..1e20ff92b5 100644 --- a/Emby.Dlna/DlnaManager.cs +++ b/Emby.Dlna/DlnaManager.cs @@ -387,7 +387,7 @@ namespace Emby.Dlna foreach (var name in _assembly.GetManifestResourceNames()) { - if (!name.StartsWith(namespaceName)) + if (!name.StartsWith(namespaceName, StringComparison.Ordinal)) { continue; } @@ -406,7 +406,7 @@ namespace Emby.Dlna using (var fileStream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read)) { - await stream.CopyToAsync(fileStream); + await stream.CopyToAsync(fileStream).ConfigureAwait(false); } } } @@ -509,7 +509,7 @@ namespace Emby.Dlna return _jsonSerializer.DeserializeFromString(json); } - class InternalProfileInfo + private class InternalProfileInfo { internal DeviceProfileInfo Info { get; set; } diff --git a/Emby.Drawing/ImageProcessor.cs b/Emby.Drawing/ImageProcessor.cs index 8696cb2805..f585b90ca1 100644 --- a/Emby.Drawing/ImageProcessor.cs +++ b/Emby.Drawing/ImageProcessor.cs @@ -448,21 +448,21 @@ namespace Emby.Drawing /// or /// filename. /// - public string GetCachePath(string path, string filename) + public string GetCachePath(ReadOnlySpan path, ReadOnlySpan filename) { - if (string.IsNullOrEmpty(path)) + if (path.IsEmpty) { - throw new ArgumentNullException(nameof(path)); + throw new ArgumentException("Path can't be empty.", nameof(path)); } - if (string.IsNullOrEmpty(filename)) + if (path.IsEmpty) { - throw new ArgumentNullException(nameof(filename)); + throw new ArgumentException("Filename can't be empty.", nameof(filename)); } - var prefix = filename.Substring(0, 1); + var prefix = filename.Slice(0, 1); - return Path.Combine(path, prefix, filename); + return Path.Join(path, prefix, filename); } /// diff --git a/Emby.Naming/TV/SeasonPathParser.cs b/Emby.Naming/TV/SeasonPathParser.cs index 2fa6b43531..d2e324dda5 100644 --- a/Emby.Naming/TV/SeasonPathParser.cs +++ b/Emby.Naming/TV/SeasonPathParser.cs @@ -77,7 +77,7 @@ namespace Emby.Naming.TV if (filename.StartsWith("s", StringComparison.OrdinalIgnoreCase)) { - var testFilename = filename.Substring(1); + var testFilename = filename.AsSpan().Slice(1); if (int.TryParse(testFilename, NumberStyles.Integer, CultureInfo.InvariantCulture, out var val)) { diff --git a/Emby.Server.Implementations/Library/LibraryManager.cs b/Emby.Server.Implementations/Library/LibraryManager.cs index c27b73c74e..302d2a0920 100644 --- a/Emby.Server.Implementations/Library/LibraryManager.cs +++ b/Emby.Server.Implementations/Library/LibraryManager.cs @@ -511,8 +511,8 @@ namespace Emby.Server.Implementations.Library { // Try to normalize paths located underneath program-data in an attempt to make them more portable key = key.Substring(_configurationManager.ApplicationPaths.ProgramDataPath.Length) - .TrimStart(new[] { '/', '\\' }) - .Replace("/", "\\"); + .TrimStart('/', '\\') + .Replace('/', '\\'); } if (forceCaseInsensitive || !_configurationManager.Configuration.EnableCaseSensitiveItemIds) diff --git a/Emby.Server.Implementations/Library/MediaSourceManager.cs b/Emby.Server.Implementations/Library/MediaSourceManager.cs index ceb36b389b..e5df206224 100644 --- a/Emby.Server.Implementations/Library/MediaSourceManager.cs +++ b/Emby.Server.Implementations/Library/MediaSourceManager.cs @@ -869,7 +869,7 @@ namespace Emby.Server.Implementations.Library var provider = _providers.FirstOrDefault(i => string.Equals(i.GetType().FullName.GetMD5().ToString("N", CultureInfo.InvariantCulture), keys[0], StringComparison.OrdinalIgnoreCase)); - var splitIndex = key.IndexOf(LiveStreamIdDelimeter); + var splitIndex = key.IndexOf(LiveStreamIdDelimeter, StringComparison.Ordinal); var keyId = key.Substring(splitIndex + 1); return new Tuple(provider, keyId); @@ -881,6 +881,7 @@ namespace Emby.Server.Implementations.Library public void Dispose() { Dispose(true); + GC.SuppressFinalize(this); } private readonly object _disposeLock = new object(); diff --git a/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs b/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs index 3709f8fe47..77a7069eb8 100644 --- a/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs +++ b/Emby.Server.Implementations/LiveTv/Listings/SchedulesDirect.cs @@ -461,7 +461,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings private async Task> GetImageForPrograms( ListingsProviderInfo info, List programIds, - CancellationToken cancellationToken) + CancellationToken cancellationToken) { if (programIds.Count == 0) { @@ -474,7 +474,7 @@ namespace Emby.Server.Implementations.LiveTv.Listings { var imageId = i.Substring(0, 10); - if (!imageIdString.Contains(imageId)) + if (!imageIdString.Contains(imageId, StringComparison.Ordinal)) { imageIdString += "\"" + imageId + "\","; } diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs index 2e2488e6ec..00420bd2ad 100644 --- a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs +++ b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs @@ -195,7 +195,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun while (!sr.EndOfStream) { string line = StripXML(sr.ReadLine()); - if (line.Contains("Channel")) + if (line.Contains("Channel", StringComparison.Ordinal)) { LiveTvTunerStatus status; var index = line.IndexOf("Channel", StringComparison.OrdinalIgnoreCase); @@ -226,6 +226,11 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun private static string StripXML(string source) { + if (string.IsNullOrEmpty(source)) + { + return string.Empty; + } + char[] buffer = new char[source.Length]; int bufferIndex = 0; bool inside = false; @@ -270,7 +275,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun for (int i = 0; i < model.TunerCount; ++i) { - var name = string.Format("Tuner {0}", i + 1); + var name = string.Format(CultureInfo.InvariantCulture, "Tuner {0}", i + 1); var currentChannel = "none"; // @todo Get current channel and map back to Station Id var isAvailable = await manager.CheckTunerAvailability(ipInfo, i, cancellationToken).ConfigureAwait(false); var status = isAvailable ? LiveTvTunerStatus.Available : LiveTvTunerStatus.LiveTv; diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs index c798c0a85c..875977219a 100644 --- a/Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs +++ b/Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs @@ -158,15 +158,14 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts private string GetChannelNumber(string extInf, Dictionary attributes, string mediaUrl) { var nameParts = extInf.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries); - var nameInExtInf = nameParts.Length > 1 ? nameParts[nameParts.Length - 1].Trim() : null; + var nameInExtInf = nameParts.Length > 1 ? nameParts[^1].AsSpan().Trim() : ReadOnlySpan.Empty; string numberString = null; string attributeValue; - double doubleValue; if (attributes.TryGetValue("tvg-chno", out attributeValue)) { - if (double.TryParse(attributeValue, NumberStyles.Any, CultureInfo.InvariantCulture, out doubleValue)) + if (double.TryParse(attributeValue, NumberStyles.Any, CultureInfo.InvariantCulture, out _)) { numberString = attributeValue; } @@ -176,36 +175,36 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts { if (attributes.TryGetValue("tvg-id", out attributeValue)) { - if (double.TryParse(attributeValue, NumberStyles.Any, CultureInfo.InvariantCulture, out doubleValue)) + if (double.TryParse(attributeValue, NumberStyles.Any, CultureInfo.InvariantCulture, out _)) { numberString = attributeValue; } else if (attributes.TryGetValue("channel-id", out attributeValue)) { - if (double.TryParse(attributeValue, NumberStyles.Any, CultureInfo.InvariantCulture, out doubleValue)) + if (double.TryParse(attributeValue, NumberStyles.Any, CultureInfo.InvariantCulture, out _)) { numberString = attributeValue; } } } - if (String.IsNullOrWhiteSpace(numberString)) + if (string.IsNullOrWhiteSpace(numberString)) { // Using this as a fallback now as this leads to Problems with channels like "5 USA" // where 5 isnt ment to be the channel number // Check for channel number with the format from SatIp // #EXTINF:0,84. VOX Schweiz // #EXTINF:0,84.0 - VOX Schweiz - if (!string.IsNullOrWhiteSpace(nameInExtInf)) + if (!nameInExtInf.IsEmpty && !nameInExtInf.IsWhiteSpace()) { var numberIndex = nameInExtInf.IndexOf(' '); if (numberIndex > 0) { - var numberPart = nameInExtInf.Substring(0, numberIndex).Trim(new[] { ' ', '.' }); + var numberPart = nameInExtInf.Slice(0, numberIndex).Trim(new[] { ' ', '.' }); - if (double.TryParse(numberPart, NumberStyles.Any, CultureInfo.InvariantCulture, out var number)) + if (double.TryParse(numberPart, NumberStyles.Any, CultureInfo.InvariantCulture, out _)) { - numberString = numberPart; + numberString = numberPart.ToString(); } } } @@ -231,7 +230,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts { try { - numberString = Path.GetFileNameWithoutExtension(mediaUrl.Split('/').Last()); + numberString = Path.GetFileNameWithoutExtension(mediaUrl.Split('/')[^1]); if (!IsValidChannelNumber(numberString)) { @@ -258,7 +257,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts return false; } - if (!double.TryParse(numberString, NumberStyles.Any, CultureInfo.InvariantCulture, out var value)) + if (!double.TryParse(numberString, NumberStyles.Any, CultureInfo.InvariantCulture, out _)) { return false; } @@ -281,7 +280,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts { var numberPart = nameInExtInf.Substring(0, numberIndex).Trim(new[] { ' ', '.' }); - if (double.TryParse(numberPart, NumberStyles.Any, CultureInfo.InvariantCulture, out var number)) + if (double.TryParse(numberPart, NumberStyles.Any, CultureInfo.InvariantCulture, out _)) { // channel.Number = number.ToString(); nameInExtInf = nameInExtInf.Substring(numberIndex + 1).Trim(new[] { ' ', '-' }); diff --git a/Emby.Server.Implementations/Localization/LocalizationManager.cs b/Emby.Server.Implementations/Localization/LocalizationManager.cs index 62a23118fb..90e2766b84 100644 --- a/Emby.Server.Implementations/Localization/LocalizationManager.cs +++ b/Emby.Server.Implementations/Localization/LocalizationManager.cs @@ -247,7 +247,7 @@ namespace Emby.Server.Implementations.Localization } // Try splitting by : to handle "Germany: FSK 18" - var index = rating.IndexOf(':'); + var index = rating.IndexOf(':', StringComparison.Ordinal); if (index != -1) { rating = rating.Substring(index).TrimStart(':').Trim(); @@ -312,12 +312,12 @@ namespace Emby.Server.Implementations.Localization throw new ArgumentNullException(nameof(culture)); } - const string prefix = "Core"; - var key = prefix + culture; + const string Prefix = "Core"; + var key = Prefix + culture; return _dictionaries.GetOrAdd( key, - f => GetDictionary(prefix, culture, DefaultCulture + ".json").GetAwaiter().GetResult()); + f => GetDictionary(Prefix, culture, DefaultCulture + ".json").GetAwaiter().GetResult()); } private async Task> GetDictionary(string prefix, string culture, string baseFilename) diff --git a/Emby.Server.Implementations/Networking/NetworkManager.cs b/Emby.Server.Implementations/Networking/NetworkManager.cs index 50cb44b284..ff95302eee 100644 --- a/Emby.Server.Implementations/Networking/NetworkManager.cs +++ b/Emby.Server.Implementations/Networking/NetworkManager.cs @@ -390,7 +390,7 @@ namespace Emby.Server.Implementations.Networking var host = uri.DnsSafeHost; _logger.LogDebug("Resolving host {0}", host); - address = GetIpAddresses(host).Result.FirstOrDefault(); + address = GetIpAddresses(host).GetAwaiter().GetResult().FirstOrDefault(); if (address != null) { diff --git a/Emby.Server.Implementations/Services/ServiceExec.cs b/Emby.Server.Implementations/Services/ServiceExec.cs index cbc4b754d2..947a5cbf8d 100644 --- a/Emby.Server.Implementations/Services/ServiceExec.cs +++ b/Emby.Server.Implementations/Services/ServiceExec.cs @@ -2,6 +2,7 @@ using System; using System.Collections.Generic; +using System.Globalization; using System.Linq; using System.Linq.Expressions; using System.Reflection; @@ -105,7 +106,12 @@ namespace Emby.Server.Implementations.Services } var expectedMethodName = actionName.Substring(0, 1) + actionName.Substring(1).ToLowerInvariant(); - throw new NotImplementedException(string.Format("Could not find method named {1}({0}) or Any({0}) on Service {2}", requestDto.GetType().GetMethodName(), expectedMethodName, serviceType.GetMethodName())); + throw new NotImplementedException( + string.Format( + CultureInfo.InvariantCulture, + "Could not find method named {1}({0}) or Any({0}) on Service {2}", + requestDto.GetType().GetMethodName(), + expectedMethodName, serviceType.GetMethodName())); } private static async Task GetTaskResult(Task task) diff --git a/Emby.Server.Implementations/Services/ServiceHandler.cs b/Emby.Server.Implementations/Services/ServiceHandler.cs index a42f88ea09..e63a80ceea 100644 --- a/Emby.Server.Implementations/Services/ServiceHandler.cs +++ b/Emby.Server.Implementations/Services/ServiceHandler.cs @@ -44,7 +44,7 @@ namespace Emby.Server.Implementations.Services var pos = pathInfo.LastIndexOf('.'); if (pos != -1) { - var format = pathInfo.Substring(pos + 1); + var format = pathInfo.AsSpan().Slice(pos + 1); contentType = GetFormatContentType(format); if (contentType != null) { @@ -55,15 +55,18 @@ namespace Emby.Server.Implementations.Services return pathInfo; } - private static string GetFormatContentType(string format) + private static string GetFormatContentType(ReadOnlySpan format) { - // built-in formats - switch (format) + if (format.Equals("json", StringComparison.Ordinal)) { - case "json": return "application/json"; - case "xml": return "application/xml"; - default: return null; + return "application/json"; } + else if (format.Equals("xml", StringComparison.Ordinal)) + { + return "application/xml"; + } + + return null; } public async Task ProcessRequestAsync(HttpListenerHost httpHost, IRequest httpReq, HttpResponse httpRes, ILogger logger, CancellationToken cancellationToken) diff --git a/Emby.Server.Implementations/Services/ServicePath.cs b/Emby.Server.Implementations/Services/ServicePath.cs index 89538ae729..69c6844f83 100644 --- a/Emby.Server.Implementations/Services/ServicePath.cs +++ b/Emby.Server.Implementations/Services/ServicePath.cs @@ -156,7 +156,7 @@ namespace Emby.Server.Implementations.Services { var component = components[i]; - if (component.StartsWith(VariablePrefix)) + if (component.StartsWith(VariablePrefix, StringComparison.Ordinal)) { var variableName = component.Substring(1, component.Length - 2); if (variableName[variableName.Length - 1] == WildCardChar) diff --git a/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs b/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs index fe5f980b18..6ff96ac565 100644 --- a/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs +++ b/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs @@ -369,7 +369,7 @@ namespace MediaBrowser.Api.Playback.Hls var playlistFilename = Path.GetFileNameWithoutExtension(playlist); - var indexString = Path.GetFileNameWithoutExtension(file.Name).Substring(playlistFilename.Length); + var indexString = Path.GetFileNameWithoutExtension(file.Name).AsSpan().Slice(playlistFilename.Length); return int.Parse(indexString, NumberStyles.Integer, CultureInfo.InvariantCulture); } diff --git a/MediaBrowser.Controller/Entities/BaseItem.cs b/MediaBrowser.Controller/Entities/BaseItem.cs index 90f62e153b..f34309c400 100644 --- a/MediaBrowser.Controller/Entities/BaseItem.cs +++ b/MediaBrowser.Controller/Entities/BaseItem.cs @@ -675,11 +675,11 @@ namespace MediaBrowser.Controller.Entities return System.IO.Path.Combine(basePath, "channels", ChannelId.ToString("N", CultureInfo.InvariantCulture), Id.ToString("N", CultureInfo.InvariantCulture)); } - var idString = Id.ToString("N", CultureInfo.InvariantCulture); + ReadOnlySpan idString = Id.ToString("N", CultureInfo.InvariantCulture); basePath = System.IO.Path.Combine(basePath, "library"); - return System.IO.Path.Combine(basePath, idString.Substring(0, 2), idString); + return System.IO.Path.Join(basePath, idString.Slice(0, 2), idString); } /// @@ -702,26 +702,27 @@ namespace MediaBrowser.Controller.Entities foreach (var removeChar in ConfigurationManager.Configuration.SortRemoveCharacters) { - sortable = sortable.Replace(removeChar, string.Empty); + sortable = sortable.Replace(removeChar, string.Empty, StringComparison.Ordinal); } foreach (var replaceChar in ConfigurationManager.Configuration.SortReplaceCharacters) { - sortable = sortable.Replace(replaceChar, " "); + sortable = sortable.Replace(replaceChar, " ", StringComparison.Ordinal); } foreach (var search in ConfigurationManager.Configuration.SortRemoveWords) { // Remove from beginning if a space follows - if (sortable.StartsWith(search + " ")) + if (sortable.StartsWith(search + " ", StringComparison.Ordinal)) { sortable = sortable.Remove(0, search.Length + 1); } + // Remove from middle if surrounded by spaces - sortable = sortable.Replace(" " + search + " ", " "); + sortable = sortable.Replace(" " + search + " ", " ", StringComparison.Ordinal); // Remove from end if followed by a space - if (sortable.EndsWith(" " + search)) + if (sortable.EndsWith(" " + search, StringComparison.Ordinal)) { sortable = sortable.Remove(sortable.Length - (search.Length + 1)); } @@ -751,6 +752,7 @@ namespace MediaBrowser.Controller.Entities builder.Append(chunkBuilder); } + // logger.LogDebug("ModifySortChunks Start: {0} End: {1}", name, builder.ToString()); return builder.ToString().RemoveDiacritics(); } diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs index ffbda42c31..18fd53ad6f 100644 --- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs +++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs @@ -1588,7 +1588,7 @@ namespace MediaBrowser.Controller.MediaEncoding { outputVideoCodec ??= string.Empty; - var outputSizeParam = string.Empty; + var outputSizeParam = ReadOnlySpan.Empty; var request = state.BaseRequest; // Add resolution params, if specified @@ -1602,28 +1602,28 @@ namespace MediaBrowser.Controller.MediaEncoding var index = outputSizeParam.IndexOf("hwdownload", StringComparison.OrdinalIgnoreCase); if (index != -1) { - outputSizeParam = outputSizeParam.Substring(index); + outputSizeParam = outputSizeParam.Slice(index); } else { index = outputSizeParam.IndexOf("format", StringComparison.OrdinalIgnoreCase); if (index != -1) { - outputSizeParam = outputSizeParam.Substring(index); + outputSizeParam = outputSizeParam.Slice(index); } else { index = outputSizeParam.IndexOf("yadif", StringComparison.OrdinalIgnoreCase); if (index != -1) { - outputSizeParam = outputSizeParam.Substring(index); + outputSizeParam = outputSizeParam.Slice(index); } else { index = outputSizeParam.IndexOf("scale", StringComparison.OrdinalIgnoreCase); if (index != -1) { - outputSizeParam = outputSizeParam.Substring(index); + outputSizeParam = outputSizeParam.Slice(index); } } } @@ -1669,9 +1669,9 @@ namespace MediaBrowser.Controller.MediaEncoding // Setup default filtergraph utilizing FFMpeg overlay() and FFMpeg scale() (see the return of this function for index reference) // Always put the scaler before the overlay for better performance - var retStr = !string.IsNullOrEmpty(outputSizeParam) ? - " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}]{3}[base];[base][sub]overlay\"" : - " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}][sub]overlay\""; + var retStr = !outputSizeParam.IsEmpty + ? " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}]{3}[base];[base][sub]overlay\"" + : " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}][sub]overlay\""; // When the input may or may not be hardware VAAPI decodable if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase)) @@ -1705,7 +1705,7 @@ namespace MediaBrowser.Controller.MediaEncoding */ if (isLinux) { - retStr = !string.IsNullOrEmpty(outputSizeParam) ? + retStr = !outputSizeParam.IsEmpty ? " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}]{3}[base];[base][sub]overlay_qsv\"" : " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}][sub]overlay_qsv\""; } @@ -1717,7 +1717,7 @@ namespace MediaBrowser.Controller.MediaEncoding mapPrefix, subtitleStreamIndex, state.VideoStream.Index, - outputSizeParam, + outputSizeParam.ToString(), videoSizeParam); } @@ -2090,7 +2090,7 @@ namespace MediaBrowser.Controller.MediaEncoding // Add software deinterlace filter before scaling filter if (state.DeInterlace("h264", true) || state.DeInterlace("h265", true) || state.DeInterlace("hevc", true)) { - var deintParam = string.Empty; + string deintParam; var inputFramerate = videoStream?.RealFrameRate; // If it is already 60fps then it will create an output framerate that is much too high for roku and others to handle @@ -2159,7 +2159,6 @@ namespace MediaBrowser.Controller.MediaEncoding return output; } - /// /// Gets the number of threads. /// diff --git a/MediaBrowser.MediaEncoding/Subtitles/AssParser.cs b/MediaBrowser.MediaEncoding/Subtitles/AssParser.cs index 0e2d70017c..43a45291cc 100644 --- a/MediaBrowser.MediaEncoding/Subtitles/AssParser.cs +++ b/MediaBrowser.MediaEncoding/Subtitles/AssParser.cs @@ -35,7 +35,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles continue; } - if (line.StartsWith("[")) + if (line[0] == '[') { break; } @@ -62,7 +62,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles return trackInfo; } - long GetTicks(string time) + private long GetTicks(ReadOnlySpan time) { return TimeSpan.TryParseExact(time, @"h\:mm\:ss\.ff", _usCulture, out var span) ? span.Ticks : 0; diff --git a/MediaBrowser.MediaEncoding/Subtitles/ParserValues.cs b/MediaBrowser.MediaEncoding/Subtitles/ParserValues.cs index bf8808eb8a..dca5c1e8ac 100644 --- a/MediaBrowser.MediaEncoding/Subtitles/ParserValues.cs +++ b/MediaBrowser.MediaEncoding/Subtitles/ParserValues.cs @@ -1,6 +1,9 @@ +#nullable enable +#pragma warning disable CS1591 + namespace MediaBrowser.MediaEncoding.Subtitles { - public class ParserValues + public static class ParserValues { public const string NewLine = "\r\n"; } diff --git a/MediaBrowser.MediaEncoding/Subtitles/SrtParser.cs b/MediaBrowser.MediaEncoding/Subtitles/SrtParser.cs index 728efa788d..cc35efb3f0 100644 --- a/MediaBrowser.MediaEncoding/Subtitles/SrtParser.cs +++ b/MediaBrowser.MediaEncoding/Subtitles/SrtParser.cs @@ -1,3 +1,5 @@ +#pragma warning disable CS1591 + using System; using System.Collections.Generic; using System.Globalization; @@ -20,6 +22,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles _logger = logger; } + /// public SubtitleTrackInfo Parse(Stream stream, CancellationToken cancellationToken) { var trackInfo = new SubtitleTrackInfo(); @@ -55,11 +58,11 @@ namespace MediaBrowser.MediaEncoding.Subtitles } subEvent.StartPositionTicks = GetTicks(time[0]); - var endTime = time[1]; - var idx = endTime.IndexOf(" ", StringComparison.Ordinal); + var endTime = time[1].AsSpan(); + var idx = endTime.IndexOf(' '); if (idx > 0) { - endTime = endTime.Substring(0, idx); + endTime = endTime.Slice(0, idx); } subEvent.EndPositionTicks = GetTicks(endTime); @@ -88,7 +91,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles return trackInfo; } - long GetTicks(string time) + private long GetTicks(ReadOnlySpan time) { return TimeSpan.TryParseExact(time, @"hh\:mm\:ss\.fff", _usCulture, out var span) ? span.Ticks diff --git a/MediaBrowser.MediaEncoding/Subtitles/SrtWriter.cs b/MediaBrowser.MediaEncoding/Subtitles/SrtWriter.cs index 45b317b2ed..143c010b71 100644 --- a/MediaBrowser.MediaEncoding/Subtitles/SrtWriter.cs +++ b/MediaBrowser.MediaEncoding/Subtitles/SrtWriter.cs @@ -8,8 +8,12 @@ using MediaBrowser.Model.MediaInfo; namespace MediaBrowser.MediaEncoding.Subtitles { + /// + /// SRT subtitle writer. + /// public class SrtWriter : ISubtitleWriter { + /// public void Write(SubtitleTrackInfo info, Stream stream, CancellationToken cancellationToken) { using (var writer = new StreamWriter(stream, Encoding.UTF8, 1024, true)) diff --git a/MediaBrowser.MediaEncoding/Subtitles/SsaParser.cs b/MediaBrowser.MediaEncoding/Subtitles/SsaParser.cs index 77033c6b44..bd330f568b 100644 --- a/MediaBrowser.MediaEncoding/Subtitles/SsaParser.cs +++ b/MediaBrowser.MediaEncoding/Subtitles/SsaParser.cs @@ -12,6 +12,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles /// public class SsaParser : ISubtitleParser { + /// public SubtitleTrackInfo Parse(Stream stream, CancellationToken cancellationToken) { var trackInfo = new SubtitleTrackInfo(); @@ -45,7 +46,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles header.AppendLine(line); } - if (line.Trim().ToLowerInvariant() == "[events]") + if (string.Equals(line.Trim(), "[events]", StringComparison.OrdinalIgnoreCase)) { eventsStarted = true; } @@ -63,27 +64,27 @@ namespace MediaBrowser.MediaEncoding.Subtitles format = line.ToLowerInvariant().Substring(8).Split(','); for (int i = 0; i < format.Length; i++) { - if (format[i].Trim().ToLowerInvariant() == "layer") + if (string.Equals(format[i].Trim(), "layer", StringComparison.OrdinalIgnoreCase)) { indexLayer = i; } - else if (format[i].Trim().ToLowerInvariant() == "start") + else if (string.Equals(format[i].Trim(), "start", StringComparison.OrdinalIgnoreCase)) { indexStart = i; } - else if (format[i].Trim().ToLowerInvariant() == "end") + else if (string.Equals(format[i].Trim(), "end", StringComparison.OrdinalIgnoreCase)) { indexEnd = i; } - else if (format[i].Trim().ToLowerInvariant() == "text") + else if (string.Equals(format[i].Trim(), "text", StringComparison.OrdinalIgnoreCase)) { indexText = i; } - else if (format[i].Trim().ToLowerInvariant() == "effect") + else if (string.Equals(format[i].Trim(), "effect", StringComparison.OrdinalIgnoreCase)) { indexEffect = i; } - else if (format[i].Trim().ToLowerInvariant() == "style") + else if (string.Equals(format[i].Trim(), "style", StringComparison.OrdinalIgnoreCase)) { indexStyle = i; } @@ -184,12 +185,10 @@ namespace MediaBrowser.MediaEncoding.Subtitles int.Parse(timeCode[3]) * 10).Ticks; } - public static string GetFormattedText(string text) + private static string GetFormattedText(string text) { text = text.Replace("\\n", ParserValues.NewLine, StringComparison.OrdinalIgnoreCase); - bool italic = false; - for (int i = 0; i < 10; i++) // just look ten times... { if (text.Contains(@"{\fn")) @@ -200,7 +199,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles { string fontName = text.Substring(start + 4, end - (start + 4)); string extraTags = string.Empty; - CheckAndAddSubTags(ref fontName, ref extraTags, out italic); + CheckAndAddSubTags(ref fontName, ref extraTags, out bool italic); text = text.Remove(start, end - start + 1); if (italic) { @@ -231,7 +230,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles { string fontSize = text.Substring(start + 4, end - (start + 4)); string extraTags = string.Empty; - CheckAndAddSubTags(ref fontSize, ref extraTags, out italic); + CheckAndAddSubTags(ref fontSize, ref extraTags, out bool italic); if (IsInteger(fontSize)) { text = text.Remove(start, end - start + 1); @@ -265,7 +264,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles { string color = text.Substring(start + 4, end - (start + 4)); string extraTags = string.Empty; - CheckAndAddSubTags(ref color, ref extraTags, out italic); + CheckAndAddSubTags(ref color, ref extraTags, out bool italic); color = color.Replace("&", string.Empty).TrimStart('H'); color = color.PadLeft(6, '0'); @@ -303,7 +302,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles { string color = text.Substring(start + 5, end - (start + 5)); string extraTags = string.Empty; - CheckAndAddSubTags(ref color, ref extraTags, out italic); + CheckAndAddSubTags(ref color, ref extraTags, out bool italic); color = color.Replace("&", string.Empty).TrimStart('H'); color = color.PadLeft(6, '0'); @@ -354,14 +353,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles } private static bool IsInteger(string s) - { - if (int.TryParse(s, out var i)) - { - return true; - } - - return false; - } + => int.TryParse(s, out _); private static int CountTagInText(string text, string tag) { diff --git a/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs b/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs index f1aa8ea5f8..969ad1b33d 100644 --- a/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs +++ b/MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs @@ -1,3 +1,5 @@ +#pragma warning disable CS1591 + using System; using System.Collections.Concurrent; using System.Diagnostics; @@ -365,7 +367,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles /// System.Object. private SemaphoreSlim GetLock(string filename) { - return _semaphoreLocks.GetOrAdd(filename, key => new SemaphoreSlim(1, 1)); + return _semaphoreLocks.GetOrAdd(filename, _ => new SemaphoreSlim(1, 1)); } /// diff --git a/MediaBrowser.MediaEncoding/Subtitles/TtmlWriter.cs b/MediaBrowser.MediaEncoding/Subtitles/TtmlWriter.cs index 7d3e185784..e5c785bc57 100644 --- a/MediaBrowser.MediaEncoding/Subtitles/TtmlWriter.cs +++ b/MediaBrowser.MediaEncoding/Subtitles/TtmlWriter.cs @@ -6,8 +6,12 @@ using MediaBrowser.Model.MediaInfo; namespace MediaBrowser.MediaEncoding.Subtitles { + /// + /// TTML subtitle writer. + /// public class TtmlWriter : ISubtitleWriter { + /// public void Write(SubtitleTrackInfo info, Stream stream, CancellationToken cancellationToken) { // Example: https://github.com/zmalltalker/ttml2vtt/blob/master/data/sample.xml @@ -36,9 +40,10 @@ namespace MediaBrowser.MediaEncoding.Subtitles text = Regex.Replace(text, @"\\n", "
", RegexOptions.IgnoreCase); - writer.WriteLine("

{2}

", + writer.WriteLine( + "

{2}

", trackEvent.StartPositionTicks, - (trackEvent.EndPositionTicks - trackEvent.StartPositionTicks), + trackEvent.EndPositionTicks - trackEvent.StartPositionTicks, text); } diff --git a/MediaBrowser.MediaEncoding/Subtitles/VttWriter.cs b/MediaBrowser.MediaEncoding/Subtitles/VttWriter.cs index de35acbba9..ad32cb7943 100644 --- a/MediaBrowser.MediaEncoding/Subtitles/VttWriter.cs +++ b/MediaBrowser.MediaEncoding/Subtitles/VttWriter.cs @@ -47,7 +47,7 @@ namespace MediaBrowser.MediaEncoding.Subtitles text = Regex.Replace(text, @"\\n", " ", RegexOptions.IgnoreCase); writer.WriteLine(text); - writer.WriteLine(string.Empty); + writer.WriteLine(); } } }