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166 lines
6 KiB
C#
166 lines
6 KiB
C#
using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Providers;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Logging;
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using System;
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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 TagLib;
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using TagLib.IFD;
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using TagLib.IFD.Entries;
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using TagLib.IFD.Tags;
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namespace MediaBrowser.Providers.Photos
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{
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public class PhotoProvider : ICustomMetadataProvider<Photo>, IHasItemChangeMonitor, IForcedProvider
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{
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private readonly ILogger _logger;
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public PhotoProvider(ILogger logger)
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{
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_logger = logger;
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}
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public Task<ItemUpdateType> FetchAsync(Photo item, MetadataRefreshOptions options, CancellationToken cancellationToken)
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{
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item.SetImagePath(ImageType.Primary, item.Path);
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// Examples: https://github.com/mono/taglib-sharp/blob/a5f6949a53d09ce63ee7495580d6802921a21f14/tests/fixtures/TagLib.Tests.Images/NullOrientationTest.cs
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try
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{
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using (var file = TagLib.File.Create(item.Path))
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{
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var image = file as TagLib.Image.File;
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var tag = file.GetTag(TagTypes.TiffIFD) as IFDTag;
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if (tag != null)
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{
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var structure = tag.Structure;
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if (structure != null)
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{
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var exif = structure.GetEntry(0, (ushort)IFDEntryTag.ExifIFD) as SubIFDEntry;
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if (exif != null)
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{
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var exifStructure = exif.Structure;
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if (exifStructure != null)
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{
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var entry = exifStructure.GetEntry(0, (ushort)ExifEntryTag.ApertureValue) as RationalIFDEntry;
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if (entry != null)
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{
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double val = entry.Value.Numerator;
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val /= entry.Value.Denominator;
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item.Aperture = val;
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}
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entry = exifStructure.GetEntry(0, (ushort)ExifEntryTag.ShutterSpeedValue) as RationalIFDEntry;
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if (entry != null)
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{
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double val = entry.Value.Numerator;
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val /= entry.Value.Denominator;
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item.ShutterSpeed = val;
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}
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}
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}
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}
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}
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item.CameraMake = image.ImageTag.Make;
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item.CameraModel = image.ImageTag.Model;
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item.Width = image.Properties.PhotoWidth;
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item.Height = image.Properties.PhotoHeight;
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var rating = image.ImageTag.Rating;
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if (rating.HasValue)
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{
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item.CommunityRating = rating;
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}
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else
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{
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item.CommunityRating = null;
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}
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item.Overview = image.ImageTag.Comment;
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if (!string.IsNullOrWhiteSpace(image.ImageTag.Title))
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{
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item.Name = image.ImageTag.Title;
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}
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var dateTaken = image.ImageTag.DateTime;
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if (dateTaken.HasValue)
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{
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item.DateCreated = dateTaken.Value;
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item.PremiereDate = dateTaken.Value;
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item.ProductionYear = dateTaken.Value.Year;
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}
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item.Genres = image.ImageTag.Genres.ToList();
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item.Tags = image.ImageTag.Keywords.ToList();
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item.Software = image.ImageTag.Software;
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if (image.ImageTag.Orientation == TagLib.Image.ImageOrientation.None)
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{
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item.Orientation = null;
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}
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else
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{
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Model.Drawing.ImageOrientation orientation;
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if (Enum.TryParse(image.ImageTag.Orientation.ToString(), true, out orientation))
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{
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item.Orientation = orientation;
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}
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}
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item.ExposureTime = image.ImageTag.ExposureTime;
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item.FocalLength = image.ImageTag.FocalLength;
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item.Latitude = image.ImageTag.Latitude;
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item.Longitude = image.ImageTag.Longitude;
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item.Altitude = image.ImageTag.Altitude;
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if (image.ImageTag.ISOSpeedRatings.HasValue)
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{
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item.IsoSpeedRating = Convert.ToInt32(image.ImageTag.ISOSpeedRatings.Value);
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}
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else
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{
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item.IsoSpeedRating = null;
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}
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}
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}
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catch (Exception e)
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{
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_logger.ErrorException("Image Provider - Error reading image tag for {0}", e, item.Path);
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}
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const ItemUpdateType result = ItemUpdateType.ImageUpdate | ItemUpdateType.MetadataImport;
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return Task.FromResult(result);
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}
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public string Name
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{
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get { return "Embedded Information"; }
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}
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public bool HasChanged(IHasMetadata item, IDirectoryService directoryService)
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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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return false;
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}
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}
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}
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