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add video image extraction back to library scan

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This commit is contained in:
Luke Pulverenti
2013-09-14 17:19:32 -04:00
parent 9a1fbcd485
commit 17d22c0130
7 changed files with 324 additions and 408 deletions
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1
MediaBrowser.Server.Implementations/MediaBrowser.Server.Implementations.csproj
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@@ -171,7 +171,6 @@
<Compile Include="ScheduledTasks\ChapterImagesTask.cs" />
<Compile Include="ScheduledTasks\PluginUpdateTask.cs" />
<Compile Include="ScheduledTasks\RefreshMediaLibraryTask.cs" />
<Compile Include="ScheduledTasks\VideoImagesTask.cs" />
<Compile Include="ServerApplicationPaths.cs" />
<Compile Include="ServerManager\ServerManager.cs" />
<Compile Include="ServerManager\WebSocketConnection.cs" />

387
MediaBrowser.Server.Implementations/ScheduledTasks/VideoImagesTask.cs
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@@ -1,387 +0,0 @@
using MediaBrowser.Common.IO;
using MediaBrowser.Common.MediaInfo;
using MediaBrowser.Common.ScheduledTasks;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Movies;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.MediaInfo;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Logging;
using MoreLinq;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.ScheduledTasks
{
/// <summary>
/// Class VideoImagesTask
/// </summary>
public class VideoImagesTask : 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;
/// <summary>
/// The _iso manager
/// </summary>
private readonly IIsoManager _isoManager;
private readonly IItemRepository _itemRepo;
private readonly ILogger _logger;
/// <summary>
/// The _locks
/// </summary>
private readonly ConcurrentDictionary<string, SemaphoreSlim> _locks = new ConcurrentDictionary<string, SemaphoreSlim>();
private readonly List<BaseItem> _newlyAddedItems = new List<BaseItem>();
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="logManager">The log manager.</param>
/// <param name="mediaEncoder">The media encoder.</param>
/// <param name="isoManager">The iso manager.</param>
public VideoImagesTask(ILibraryManager libraryManager, ILogManager logManager, IMediaEncoder mediaEncoder, IIsoManager isoManager, IItemRepository itemRepo)
{
_libraryManager = libraryManager;
_mediaEncoder = mediaEncoder;
_isoManager = isoManager;
_itemRepo = itemRepo;
_logger = logManager.GetLogger(GetType().Name);
ImageCache = new FileSystemRepository(Kernel.Instance.FFMpegManager.VideoImagesDataPath);
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)
{
lock (_newlyAddedItems)
{
_newlyAddedItems.Add(e.Item);
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<BaseItem> newItems;
// Lock the list and release all resources
lock (_newlyAddedItems)
{
newItems = _newlyAddedItems.DistinctBy(i => i.Id).ToList();
_newlyAddedItems.Clear();
NewItemTimer.Dispose();
NewItemTimer = null;
}
foreach (var item in GetItemsForExtraction(newItems.Take(5)))
{
try
{
await ExtractImage(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 "Video image extraction"; }
}
/// <summary>
/// Gets the description.
/// </summary>
/// <value>The description.</value>
public string Description
{
get { return "Extracts images from video 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 = GetItemsForExtraction(_libraryManager.RootFolder.RecursiveChildren).ToList();
progress.Report(0);
var numComplete = 0;
foreach (var item in items)
{
try
{
await ExtractImage(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>
/// Gets the items for extraction.
/// </summary>
/// <param name="sourceItems">The source items.</param>
/// <returns>IEnumerable{BaseItem}.</returns>
private IEnumerable<Video> GetItemsForExtraction(IEnumerable<BaseItem> sourceItems)
{
var allItems = sourceItems.ToList();
var localTrailers = allItems.SelectMany(i => i.LocalTrailerIds.Select(_itemRepo.RetrieveItem)).Cast<Video>();
var themeVideos = allItems.SelectMany(i => i.ThemeVideoIds.Select(_itemRepo.RetrieveItem)).Cast<Video>();
var videos = allItems.OfType<Video>().ToList();
var items = videos.ToList();
items.AddRange(localTrailers);
items.AddRange(themeVideos);
items.AddRange(videos.SelectMany(i => i.AdditionalPartIds).Select(_itemRepo.RetrieveItem).Cast<Video>());
items.AddRange(videos.OfType<Movie>().SelectMany(i => i.SpecialFeatureIds).Select(_itemRepo.RetrieveItem).Cast<Video>());
return items.Where(i =>
{
if (!string.IsNullOrEmpty(i.PrimaryImagePath))
{
return false;
}
if (i.LocationType != LocationType.FileSystem)
{
return false;
}
if (i.VideoType == VideoType.HdDvd)
{
return false;
}
if (i.VideoType == VideoType.Iso && !i.IsoType.HasValue)
{
return false;
}
return i.MediaStreams != null && i.MediaStreams.Any(m => m.Type == MediaStreamType.Video);
});
}
/// <summary>
/// Extracts the image.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private async Task ExtractImage(Video item, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var filename = item.Path + "_" + item.DateModified.Ticks + "_primary";
var path = ImageCache.GetResourcePath(filename, ".jpg");
if (!File.Exists(path))
{
var semaphore = GetLock(path);
// Acquire a lock
await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
// Check again
if (!File.Exists(path))
{
try
{
var parentPath = Path.GetDirectoryName(path);
if (!Directory.Exists(parentPath))
{
Directory.CreateDirectory(parentPath);
}
await ExtractImageInternal(item, path, cancellationToken).ConfigureAwait(false);
}
finally
{
semaphore.Release();
}
}
else
{
semaphore.Release();
}
}
// Image is already in the cache
item.PrimaryImagePath = path;
await _libraryManager.UpdateItem(item, ItemUpdateType.ImageUpdate, cancellationToken).ConfigureAwait(false);
}
/// <summary>
/// Extracts the image.
/// </summary>
/// <param name="video">The video.</param>
/// <param name="path">The path.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private async Task ExtractImageInternal(Video video, string path, CancellationToken cancellationToken)
{
var isoMount = await MountIsoIfNeeded(video, cancellationToken).ConfigureAwait(false);
try
{
// If we know the duration, grab it from 10% into the video. Otherwise just 10 seconds in.
// Always use 10 seconds for dvd because our duration could be out of whack
var imageOffset = video.VideoType != VideoType.Dvd && video.RunTimeTicks.HasValue &&
video.RunTimeTicks.Value > 0
? TimeSpan.FromTicks(Convert.ToInt64(video.RunTimeTicks.Value * .1))
: TimeSpan.FromSeconds(10);
InputType type;
var inputPath = MediaEncoderHelpers.GetInputArgument(video, isoMount, out type);
await _mediaEncoder.ExtractImage(inputPath, type, video.Video3DFormat, imageOffset, path, cancellationToken).ConfigureAwait(false);
video.PrimaryImagePath = path;
}
finally
{
if (isoMount != null)
{
isoMount.Dispose();
}
}
}
/// <summary>
/// The null mount task result
/// </summary>
protected readonly Task<IIsoMount> NullMountTaskResult = Task.FromResult<IIsoMount>(null);
/// <summary>
/// Mounts the iso if needed.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{IIsoMount}.</returns>
protected Task<IIsoMount> MountIsoIfNeeded(Video item, CancellationToken cancellationToken)
{
if (item.VideoType == VideoType.Iso)
{
return _isoManager.Mount(item.Path, cancellationToken);
}
return NullMountTaskResult;
}
/// <summary>
/// Gets the default triggers.
/// </summary>
/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
public IEnumerable<ITaskTrigger> GetDefaultTriggers()
{
return new ITaskTrigger[]
{
new DailyTrigger { TimeOfDay = TimeSpan.FromHours(2) }
};
}
/// <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));
}
}
}