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#nullable disable
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#pragma warning disable CS1591
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using System;
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using System.Collections.Generic;
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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.Threading;
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using System.Threading.Tasks;
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using Jellyfin.Extensions;
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using MediaBrowser.Controller.Chapters;
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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.Controller.Providers;
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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 Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.MediaEncoder
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{
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public class EncodingManager : IEncodingManager
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{
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private readonly IFileSystem _fileSystem;
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private readonly ILogger<EncodingManager> _logger;
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private readonly IMediaEncoder _encoder;
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private readonly IChapterManager _chapterManager;
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private readonly ILibraryManager _libraryManager;
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/// <summary>
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/// The first chapter ticks.
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/// </summary>
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private static readonly long _firstChapterTicks = TimeSpan.FromSeconds(15).Ticks;
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public EncodingManager(
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ILogger<EncodingManager> logger,
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IFileSystem fileSystem,
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IMediaEncoder encoder,
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IChapterManager chapterManager,
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ILibraryManager libraryManager)
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{
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_logger = logger;
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_fileSystem = fileSystem;
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_encoder = encoder;
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_chapterManager = chapterManager;
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_libraryManager = libraryManager;
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}
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/// <summary>
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/// Gets the chapter images data path.
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/// </summary>
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/// <value>The chapter images data path.</value>
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private static string GetChapterImagesPath(BaseItem item)
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{
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return Path.Combine(item.GetInternalMetadataPath(), "chapters");
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}
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/// <summary>
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/// Determines whether [is eligible for chapter image extraction] [the specified video].
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/// </summary>
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/// <param name="video">The video.</param>
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/// <returns><c>true</c> if [is eligible for chapter image extraction] [the specified video]; otherwise, <c>false</c>.</returns>
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private bool IsEligibleForChapterImageExtraction(Video video)
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{
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if (video.IsPlaceHolder)
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{
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return false;
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}
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var libraryOptions = _libraryManager.GetLibraryOptions(video);
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if (libraryOptions is not null)
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{
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if (!libraryOptions.EnableChapterImageExtraction)
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{
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return false;
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}
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}
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else
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{
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return false;
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}
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if (video.IsShortcut)
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{
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return false;
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}
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if (!video.IsCompleteMedia)
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{
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return false;
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}
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// Can't extract images if there are no video streams
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return video.DefaultVideoStreamIndex.HasValue;
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}
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public async Task<bool> RefreshChapterImages(Video video, IDirectoryService directoryService, IReadOnlyList<ChapterInfo> chapters, bool extractImages, bool saveChapters, CancellationToken cancellationToken)
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{
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if (!IsEligibleForChapterImageExtraction(video))
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{
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extractImages = false;
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}
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var success = true;
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var changesMade = false;
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var runtimeTicks = video.RunTimeTicks ?? 0;
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var currentImages = GetSavedChapterImages(video, directoryService);
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foreach (var chapter in chapters)
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{
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if (chapter.StartPositionTicks >= runtimeTicks)
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{
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_logger.LogInformation("Stopping chapter extraction for {0} because a chapter was found with a position greater than the runtime.", video.Name);
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break;
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}
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var path = GetChapterImagePath(video, chapter.StartPositionTicks);
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if (!currentImages.Contains(path, StringComparison.OrdinalIgnoreCase))
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{
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if (extractImages)
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{
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cancellationToken.ThrowIfCancellationRequested();
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try
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{
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// Add some time for the first chapter to make sure we don't end up with a black image
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var time = chapter.StartPositionTicks == 0 ? TimeSpan.FromTicks(Math.Min(_firstChapterTicks, video.RunTimeTicks ?? 0)) : TimeSpan.FromTicks(chapter.StartPositionTicks);
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var inputPath = video.Path;
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Directory.CreateDirectory(Path.GetDirectoryName(path));
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var container = video.Container;
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var mediaSource = new MediaSourceInfo
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{
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VideoType = video.VideoType,
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IsoType = video.IsoType,
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Protocol = video.PathProtocol.Value,
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};
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var tempFile = await _encoder.ExtractVideoImage(inputPath, container, mediaSource, video.GetDefaultVideoStream(), video.Video3DFormat, time, cancellationToken).ConfigureAwait(false);
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File.Copy(tempFile, path, true);
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try
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{
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_fileSystem.DeleteFile(tempFile);
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}
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catch (IOException ex)
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{
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_logger.LogError(ex, "Error deleting temporary chapter image encoding file {Path}", tempFile);
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}
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chapter.ImagePath = path;
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chapter.ImageDateModified = _fileSystem.GetLastWriteTimeUtc(path);
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changesMade = true;
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error extracting chapter images for {0}", string.Join(',', video.Path));
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success = false;
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break;
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}
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}
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else if (!string.IsNullOrEmpty(chapter.ImagePath))
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{
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chapter.ImagePath = null;
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changesMade = true;
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}
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}
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else if (!string.Equals(path, chapter.ImagePath, StringComparison.OrdinalIgnoreCase))
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{
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chapter.ImagePath = path;
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chapter.ImageDateModified = _fileSystem.GetLastWriteTimeUtc(path);
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changesMade = true;
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}
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}
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if (saveChapters && changesMade)
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{
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_chapterManager.SaveChapters(video.Id, chapters);
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}
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DeleteDeadImages(currentImages, chapters);
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return success;
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}
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private string GetChapterImagePath(Video video, long chapterPositionTicks)
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{
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var filename = video.DateModified.Ticks.ToString(CultureInfo.InvariantCulture) + "_" + chapterPositionTicks.ToString(CultureInfo.InvariantCulture) + ".jpg";
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return Path.Combine(GetChapterImagesPath(video), filename);
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}
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private static IReadOnlyList<string> GetSavedChapterImages(Video video, IDirectoryService directoryService)
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{
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var path = GetChapterImagesPath(video);
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if (!Directory.Exists(path))
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{
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return Array.Empty<string>();
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}
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try
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{
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return directoryService.GetFilePaths(path);
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}
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catch (IOException)
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{
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return Array.Empty<string>();
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}
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}
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private void DeleteDeadImages(IEnumerable<string> images, IEnumerable<ChapterInfo> chapters)
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{
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var deadImages = images
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.Except(chapters.Select(i => i.ImagePath).Where(i => !string.IsNullOrEmpty(i)), StringComparer.OrdinalIgnoreCase)
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.Where(i => BaseItem.SupportedImageExtensions.Contains(Path.GetExtension(i), StringComparison.OrdinalIgnoreCase))
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.ToList();
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foreach (var image in deadImages)
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{
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_logger.LogDebug("Deleting dead chapter image {Path}", image);
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try
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{
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_fileSystem.DeleteFile(image);
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}
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catch (IOException ex)
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{
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_logger.LogError(ex, "Error deleting {Path}.", image);
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}
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}
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}
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}
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}
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