2014-02-20 17:37:41 +01:00
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.ScheduledTasks;
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2013-02-21 02:33:05 +01:00
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using MediaBrowser.Controller.Entities;
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2013-02-28 20:32:41 +01:00
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using MediaBrowser.Controller.Library;
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2014-02-20 17:37:41 +01:00
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using MediaBrowser.Controller.MediaEncoding;
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2013-06-18 21:16:27 +02:00
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using MediaBrowser.Controller.Persistence;
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2013-02-23 08:57:11 +01:00
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using MediaBrowser.Model.Logging;
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2013-02-21 02:33:05 +01:00
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using System;
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using System.Collections.Generic;
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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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2013-03-05 04:34:02 +01:00
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namespace MediaBrowser.Server.Implementations.ScheduledTasks
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{
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/// <summary>
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/// Class ChapterImagesTask
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/// </summary>
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class ChapterImagesTask : IScheduledTask
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{
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/// <summary>
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/// The _logger
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/// </summary>
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private readonly ILogger _logger;
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/// <summary>
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/// The _library manager
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/// </summary>
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private readonly ILibraryManager _libraryManager;
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/// <summary>
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/// The current new item timer
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/// </summary>
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/// <value>The new item timer.</value>
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private Timer NewItemTimer { get; set; }
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private readonly IItemRepository _itemRepo;
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private readonly IApplicationPaths _appPaths;
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private readonly IEncodingManager _encodingManager;
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/// <summary>
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/// Initializes a new instance of the <see cref="ChapterImagesTask" /> class.
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/// </summary>
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/// <param name="logManager">The log manager.</param>
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/// <param name="libraryManager">The library manager.</param>
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/// <param name="itemRepo">The item repo.</param>
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public ChapterImagesTask(ILogManager logManager, ILibraryManager libraryManager, IItemRepository itemRepo, IApplicationPaths appPaths, IEncodingManager encodingManager)
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{
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_logger = logManager.GetLogger(GetType().Name);
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_libraryManager = libraryManager;
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_itemRepo = itemRepo;
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_appPaths = appPaths;
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_encodingManager = encodingManager;
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}
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/// <summary>
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/// Creates the triggers that define when the task will run
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/// </summary>
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/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
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public IEnumerable<ITaskTrigger> GetDefaultTriggers()
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{
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return new ITaskTrigger[]
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{
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new DailyTrigger
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{
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TimeOfDay = TimeSpan.FromHours(3),
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TaskOptions = new TaskExecutionOptions
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{
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MaxRuntimeMs = Convert.ToInt32(TimeSpan.FromHours(5).TotalMilliseconds)
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}
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}
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};
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}
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/// <summary>
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/// Returns the task to be executed
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/// </summary>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <param name="progress">The progress.</param>
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/// <returns>Task.</returns>
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public async Task Execute(CancellationToken cancellationToken, IProgress<double> progress)
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{
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var videos = _libraryManager.RootFolder.GetRecursiveChildren(i => i is Video)
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.Cast<Video>()
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.ToList();
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var numComplete = 0;
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var failHistoryPath = Path.Combine(_appPaths.CachePath, "chapter-failures.txt");
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List<string> previouslyFailedImages;
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try
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{
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previouslyFailedImages = File.ReadAllText(failHistoryPath)
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.Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries)
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.ToList();
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}
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catch (FileNotFoundException)
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{
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previouslyFailedImages = new List<string>();
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}
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catch (DirectoryNotFoundException)
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{
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previouslyFailedImages = new List<string>();
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}
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foreach (var video in videos)
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{
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cancellationToken.ThrowIfCancellationRequested();
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var key = video.Path + video.DateModified.Ticks;
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var extract = !previouslyFailedImages.Contains(key, StringComparer.OrdinalIgnoreCase);
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var chapters = _itemRepo.GetChapters(video.Id).ToList();
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var success = await _encodingManager.RefreshChapterImages(new ChapterImageRefreshOptions
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{
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SaveChapters = true,
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ExtractImages = extract,
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Video = video,
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Chapters = chapters
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}, CancellationToken.None);
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if (!success)
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{
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previouslyFailedImages.Add(key);
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2013-06-04 04:02:49 +02:00
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var parentPath = Path.GetDirectoryName(failHistoryPath);
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Directory.CreateDirectory(parentPath);
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File.WriteAllText(failHistoryPath, string.Join("|", previouslyFailedImages.ToArray()));
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}
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numComplete++;
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double percent = numComplete;
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percent /= videos.Count;
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progress.Report(100 * percent);
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}
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}
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/// <summary>
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/// Gets the name of the task
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/// </summary>
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/// <value>The name.</value>
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public string Name
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{
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get
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{
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return "Chapter image extraction";
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}
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}
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/// <summary>
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/// Gets the description.
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/// </summary>
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/// <value>The description.</value>
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public string Description
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{
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get { return "Creates thumbnails for videos that have chapters."; }
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}
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/// <summary>
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/// Gets the category.
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/// </summary>
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/// <value>The category.</value>
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public string Category
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{
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get
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{
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return "Library";
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}
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}
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}
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}
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