mirror of
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209 lines
7.8 KiB
C#
209 lines
7.8 KiB
C#
using MediaBrowser.Controller.Configuration;
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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.Drawing;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.MediaInfo;
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using System;
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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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using CommonIO;
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namespace MediaBrowser.Providers.MediaInfo
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{
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public class VideoImageProvider : IDynamicImageProvider, IHasItemChangeMonitor, IHasOrder
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{
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private readonly IIsoManager _isoManager;
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private readonly IMediaEncoder _mediaEncoder;
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private readonly IServerConfigurationManager _config;
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private readonly ILibraryManager _libraryManager;
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private readonly ILogger _logger;
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private readonly IFileSystem _fileSystem;
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public VideoImageProvider(IIsoManager isoManager, IMediaEncoder mediaEncoder, IServerConfigurationManager config, ILibraryManager libraryManager, ILogger logger, IFileSystem fileSystem)
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{
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_isoManager = isoManager;
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_mediaEncoder = mediaEncoder;
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_config = config;
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_libraryManager = libraryManager;
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_logger = logger;
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_fileSystem = fileSystem;
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}
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/// <summary>
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/// The null mount task result
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/// </summary>
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protected readonly Task<IIsoMount> NullMountTaskResult = Task.FromResult<IIsoMount>(null);
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/// <summary>
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/// Mounts the iso if needed.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task{IIsoMount}.</returns>
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protected Task<IIsoMount> MountIsoIfNeeded(Video item, CancellationToken cancellationToken)
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{
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if (item.VideoType == VideoType.Iso)
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{
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return _isoManager.Mount(item.Path, cancellationToken);
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}
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return NullMountTaskResult;
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}
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public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
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{
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return new List<ImageType> { ImageType.Primary };
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}
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public Task<DynamicImageResponse> GetImage(IHasImages item, ImageType type, CancellationToken cancellationToken)
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{
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var video = (Video)item;
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// No support for this
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if (video.VideoType == VideoType.HdDvd || video.IsPlaceHolder)
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{
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return Task.FromResult(new DynamicImageResponse { HasImage = false });
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}
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// Can't extract from iso's if we weren't unable to determine iso type
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if (video.VideoType == VideoType.Iso && !video.IsoType.HasValue)
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{
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return Task.FromResult(new DynamicImageResponse { HasImage = false });
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}
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// Can't extract if we didn't find a video stream in the file
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if (!video.DefaultVideoStreamIndex.HasValue)
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{
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_logger.Info("Skipping image extraction due to missing DefaultVideoStreamIndex for {0}.", video.Path ?? string.Empty);
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return Task.FromResult(new DynamicImageResponse { HasImage = false });
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}
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return GetVideoImage(video, cancellationToken);
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}
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public async Task<DynamicImageResponse> GetVideoImage(Video item, CancellationToken cancellationToken)
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{
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var isoMount = await MountIsoIfNeeded(item, cancellationToken).ConfigureAwait(false);
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try
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{
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var protocol = item.LocationType == LocationType.Remote
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? MediaProtocol.Http
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: MediaProtocol.File;
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var inputPath = MediaEncoderHelpers.GetInputArgument(_fileSystem, item.Path, protocol, isoMount, item.PlayableStreamFileNames);
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var mediaStreams =
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item.GetMediaSources(false)
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.Take(1)
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.SelectMany(i => i.MediaStreams)
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.ToList();
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var imageStreams =
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mediaStreams
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.Where(i => i.Type == MediaStreamType.EmbeddedImage)
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.ToList();
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var imageStream = imageStreams.FirstOrDefault(i => (i.Comment ?? string.Empty).IndexOf("front", StringComparison.OrdinalIgnoreCase) != -1) ??
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imageStreams.FirstOrDefault(i => (i.Comment ?? string.Empty).IndexOf("cover", StringComparison.OrdinalIgnoreCase) != -1) ??
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imageStreams.FirstOrDefault();
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string extractedImagePath;
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if (imageStream != null)
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{
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// Instead of using the raw stream index, we need to use nth video/embedded image stream
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var videoIndex = -1;
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foreach (var mediaStream in mediaStreams)
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{
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if (mediaStream.Type == MediaStreamType.Video ||
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mediaStream.Type == MediaStreamType.EmbeddedImage)
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{
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videoIndex++;
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}
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if (mediaStream == imageStream)
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{
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break;
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}
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}
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extractedImagePath = await _mediaEncoder.ExtractVideoImage(inputPath, protocol, videoIndex, cancellationToken).ConfigureAwait(false);
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}
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else
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{
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// If we know the duration, grab it from 10% into the video. Otherwise just 10 seconds in.
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// Always use 10 seconds for dvd because our duration could be out of whack
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var imageOffset = item.VideoType != VideoType.Dvd && item.RunTimeTicks.HasValue &&
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item.RunTimeTicks.Value > 0
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? TimeSpan.FromTicks(Convert.ToInt64(item.RunTimeTicks.Value * .1))
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: TimeSpan.FromSeconds(10);
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extractedImagePath = await _mediaEncoder.ExtractVideoImage(inputPath, protocol, item.Video3DFormat, imageOffset, cancellationToken).ConfigureAwait(false);
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}
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return new DynamicImageResponse
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{
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Format = ImageFormat.Jpg,
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HasImage = true,
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Path = extractedImagePath,
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Protocol = MediaProtocol.File
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};
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}
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finally
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{
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if (isoMount != null)
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{
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isoMount.Dispose();
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}
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}
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}
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public string Name
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{
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get { return "Screen Grabber"; }
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}
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public bool Supports(IHasImages item)
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{
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var video = item as Video;
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if (item.LocationType == LocationType.FileSystem && video != null && !video.IsPlaceHolder &&
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!video.IsShortcut && !video.IsArchive)
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{
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return true;
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}
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return false;
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}
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public int Order
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{
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get
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{
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// Make sure this comes after internet image providers
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return 100;
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}
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}
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public bool HasChanged(IHasMetadata item, IDirectoryService directoryService)
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{
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if (item.EnableRefreshOnDateModifiedChange)
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{
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var file = directoryService.GetFile(item.Path);
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if (file != null && file.LastWriteTimeUtc != item.DateModified)
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{
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return true;
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}
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}
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return false;
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}
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}
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}
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