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178 lines
5.8 KiB
C#
178 lines
5.8 KiB
C#
using MediaBrowser.Common.IO;
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using MediaBrowser.Common.MediaInfo;
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using MediaBrowser.Common.ScheduledTasks;
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using MediaBrowser.Controller;
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using MediaBrowser.Controller.Entities.Audio;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Model.Entities;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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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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namespace MediaBrowser.Server.Implementations.ScheduledTasks
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{
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/// <summary>
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/// Class AudioImagesTask
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/// </summary>
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public class AudioImagesTask : IScheduledTask
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{
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/// <summary>
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/// Gets or sets the image cache.
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/// </summary>
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/// <value>The image cache.</value>
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public FileSystemRepository ImageCache { get; set; }
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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 _media encoder
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/// </summary>
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private readonly IMediaEncoder _mediaEncoder;
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/// <summary>
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/// The _locks
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/// </summary>
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private readonly ConcurrentDictionary<string, SemaphoreSlim> _locks = new ConcurrentDictionary<string, SemaphoreSlim>();
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/// <summary>
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/// Initializes a new instance of the <see cref="AudioImagesTask" /> class.
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/// </summary>
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/// <param name="libraryManager">The library manager.</param>
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/// <param name="mediaEncoder">The media encoder.</param>
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public AudioImagesTask(ILibraryManager libraryManager, IMediaEncoder mediaEncoder)
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{
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_libraryManager = libraryManager;
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_mediaEncoder = mediaEncoder;
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ImageCache = new FileSystemRepository(Kernel.Instance.FFMpegManager.AudioImagesDataPath);
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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 { return "Audio image extraction"; }
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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 "Extracts images from audio files that do not have external images."; }
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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 { return "Library"; }
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}
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/// <summary>
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/// Executes the task
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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 items = _libraryManager.RootFolder.RecursiveChildren
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.OfType<Audio>()
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.Where(i => i.LocationType == LocationType.FileSystem && string.IsNullOrEmpty(i.PrimaryImagePath) && i.MediaStreams != null && i.MediaStreams.Any(m => m.Type == MediaStreamType.Video))
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.ToList();
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progress.Report(0);
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var numComplete = 0;
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foreach (var item in items)
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{
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cancellationToken.ThrowIfCancellationRequested();
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var album = item.Parent as MusicAlbum;
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var filename = album != null && string.IsNullOrEmpty(item.Album + album.DateModified.Ticks) ? (item.Id.ToString() + item.DateModified.Ticks) : item.Album;
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var path = ImageCache.GetResourcePath(filename + "_primary", ".jpg");
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var success = true;
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if (!ImageCache.ContainsFilePath(path))
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{
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var semaphore = GetLock(path);
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// Acquire a lock
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await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
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// Check again
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if (!ImageCache.ContainsFilePath(path))
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{
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try
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{
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await _mediaEncoder.ExtractImage(new[] { item.Path }, InputType.AudioFile, null, path, cancellationToken).ConfigureAwait(false);
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}
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catch
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{
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success = false;
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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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else
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{
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semaphore.Release();
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}
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}
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numComplete++;
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double percent = numComplete;
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percent /= items.Count;
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progress.Report(100 * percent);
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if (success)
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{
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// Image is already in the cache
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item.PrimaryImagePath = path;
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}
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}
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progress.Report(100);
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}
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/// <summary>
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/// Gets the default triggers.
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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 { TimeOfDay = TimeSpan.FromHours(1) }
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};
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}
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/// <summary>
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/// Gets the lock.
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/// </summary>
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/// <param name="filename">The filename.</param>
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/// <returns>System.Object.</returns>
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private SemaphoreSlim GetLock(string filename)
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{
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return _locks.GetOrAdd(filename, key => new SemaphoreSlim(1, 1));
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}
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}
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}
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