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move audio image extraction back into library scan

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Luke Pulverenti
2013-05-21 00:04:38 -04:00
parent f3a7307ebb
commit 710c1073c1
8 changed files with 119 additions and 332 deletions
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1
MediaBrowser.Server.Implementations/MediaBrowser.Server.Implementations.csproj
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@@ -151,7 +151,6 @@
<Compile Include="ScheduledTasks\ChapterImagesTask.cs" />
<Compile Include="ScheduledTasks\ImageCleanupTask.cs" />
<Compile Include="ScheduledTasks\PluginUpdateTask.cs" />
<Compile Include="ScheduledTasks\AudioImagesTask.cs" />
<Compile Include="ScheduledTasks\RefreshMediaLibraryTask.cs" />
<Compile Include="ScheduledTasks\VideoImagesTask.cs" />
<Compile Include="ServerApplicationPaths.cs" />

276
MediaBrowser.Server.Implementations/ScheduledTasks/AudioImagesTask.cs
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@@ -1,276 +0,0 @@
using MediaBrowser.Common.IO;
using MediaBrowser.Common.MediaInfo;
using MediaBrowser.Common.ScheduledTasks;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Entities;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Model.Logging;
using MoreLinq;
namespace MediaBrowser.Server.Implementations.ScheduledTasks
{
/// <summary>
/// Class AudioImagesTask
/// </summary>
public class AudioImagesTask : IScheduledTask
{
/// <summary>
/// Gets or sets the image cache.
/// </summary>
/// <value>The image cache.</value>
public FileSystemRepository ImageCache { get; set; }
/// <summary>
/// The _library manager
/// </summary>
private readonly ILibraryManager _libraryManager;
/// <summary>
/// The _media encoder
/// </summary>
private readonly IMediaEncoder _mediaEncoder;
private readonly ILogger _logger;
/// <summary>
/// The _locks
/// </summary>
private readonly ConcurrentDictionary<string, SemaphoreSlim> _locks = new ConcurrentDictionary<string, SemaphoreSlim>();
private readonly List<Audio> _newlyAddedItems = new List<Audio>();
private const int NewItemDelay = 60000;
/// <summary>
/// The current new item timer
/// </summary>
/// <value>The new item timer.</value>
private Timer NewItemTimer { get; set; }
/// <summary>
/// Initializes a new instance of the <see cref="AudioImagesTask" /> class.
/// </summary>
/// <param name="libraryManager">The library manager.</param>
/// <param name="mediaEncoder">The media encoder.</param>
public AudioImagesTask(ILibraryManager libraryManager, IMediaEncoder mediaEncoder, ILogManager logManager)
{
_libraryManager = libraryManager;
_mediaEncoder = mediaEncoder;
_logger = logManager.GetLogger(GetType().Name);
ImageCache = new FileSystemRepository(Kernel.Instance.FFMpegManager.AudioImagesDataPath);
libraryManager.ItemAdded += libraryManager_ItemAdded;
libraryManager.ItemUpdated += libraryManager_ItemAdded;
}
/// <summary>
/// Handles the ItemAdded event of the libraryManager control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="ItemChangeEventArgs"/> instance containing the event data.</param>
void libraryManager_ItemAdded(object sender, ItemChangeEventArgs e)
{
var audio = e.Item as Audio;
if (audio != null)
{
lock (_newlyAddedItems)
{
_newlyAddedItems.Add(audio);
if (NewItemTimer == null)
{
NewItemTimer = new Timer(NewItemTimerCallback, null, NewItemDelay, Timeout.Infinite);
}
else
{
NewItemTimer.Change(NewItemDelay, Timeout.Infinite);
}
}
}
}
/// <summary>
/// News the item timer callback.
/// </summary>
/// <param name="state">The state.</param>
private async void NewItemTimerCallback(object state)
{
List<Audio> newSongs;
// Lock the list and release all resources
lock (_newlyAddedItems)
{
newSongs = _newlyAddedItems.DistinctBy(i => i.Id).ToList();
_newlyAddedItems.Clear();
NewItemTimer.Dispose();
NewItemTimer = null;
}
foreach (var item in newSongs
.Where(i => i.LocationType == LocationType.FileSystem && string.IsNullOrEmpty(i.PrimaryImagePath) && i.MediaStreams.Any(m => m.Type == MediaStreamType.Video))
.Take(10))
{
try
{
await CreateImagesForSong(item, CancellationToken.None).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error creating image for {0}", ex, item.Name);
}
}
}
/// <summary>
/// Gets the name of the task
/// </summary>
/// <value>The name.</value>
public string Name
{
get { return "Audio image extraction"; }
}
/// <summary>
/// Gets the description.
/// </summary>
/// <value>The description.</value>
public string Description
{
get { return "Extracts images from audio files that do not have external images."; }
}
/// <summary>
/// Gets the category.
/// </summary>
/// <value>The category.</value>
public string Category
{
get { return "Library"; }
}
/// <summary>
/// Executes the task
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="progress">The progress.</param>
/// <returns>Task.</returns>
public async Task Execute(CancellationToken cancellationToken, IProgress<double> progress)
{
var items = _libraryManager.RootFolder.RecursiveChildren
.OfType<Audio>()
.Where(i => i.LocationType == LocationType.FileSystem && string.IsNullOrEmpty(i.PrimaryImagePath) && i.MediaStreams.Any(m => m.Type == MediaStreamType.Video))
.ToList();
progress.Report(0);
var numComplete = 0;
foreach (var item in items)
{
try
{
await CreateImagesForSong(item, cancellationToken).ConfigureAwait(false);
}
catch
{
// Already logged at lower levels.
// Just don't let the task fail
}
numComplete++;
double percent = numComplete;
percent /= items.Count;
progress.Report(100 * percent);
}
progress.Report(100);
}
/// <summary>
/// Creates the images for song.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private async Task CreateImagesForSong(Audio item, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
if (item.MediaStreams.All(i => i.Type != MediaStreamType.Video))
{
throw new InvalidOperationException("Can't extract an image unless the audio file has an embedded image.");
}
var album = item.Parent as MusicAlbum;
var filename = item.Album ?? string.Empty;
filename += album == null ? item.Id.ToString("N") + item.DateModified.Ticks : album.Id.ToString("N") + album.DateModified.Ticks;
var path = ImageCache.GetResourcePath(filename + "_primary", ".jpg");
if (!ImageCache.ContainsFilePath(path))
{
var semaphore = GetLock(path);
// Acquire a lock
await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
// Check again
if (!ImageCache.ContainsFilePath(path))
{
try
{
await _mediaEncoder.ExtractImage(new[] { item.Path }, InputType.AudioFile, null, path, cancellationToken).ConfigureAwait(false);
}
finally
{
semaphore.Release();
}
// Image is already in the cache
item.PrimaryImagePath = path;
await _libraryManager.UpdateItem(item, cancellationToken).ConfigureAwait(false);
}
else
{
semaphore.Release();
}
}
}
/// <summary>
/// Gets the default triggers.
/// </summary>
/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
public IEnumerable<ITaskTrigger> GetDefaultTriggers()
{
return new ITaskTrigger[]
{
new DailyTrigger { TimeOfDay = TimeSpan.FromHours(1) }
};
}
/// <summary>
/// Gets the lock.
/// </summary>
/// <param name="filename">The filename.</param>
/// <returns>System.Object.</returns>
private SemaphoreSlim GetLock(string filename)
{
return _locks.GetOrAdd(filename, key => new SemaphoreSlim(1, 1));
}
}
}