mirror of
https://github.com/jellyfin/jellyfin.git
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183 lines
7.4 KiB
C#
183 lines
7.4 KiB
C#
using System;
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using System.IO;
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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 Jellyfin.Extensions;
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using MediaBrowser.Controller.Drawing;
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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.Drawing;
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using MediaBrowser.Model.Entities;
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using Microsoft.Extensions.Logging;
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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 Emby.Photos
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{
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/// <summary>
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/// Metadata provider for photos.
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/// </summary>
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public class PhotoProvider : ICustomMetadataProvider<Photo>, IForcedProvider, IHasItemChangeMonitor
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{
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private readonly ILogger<PhotoProvider> _logger;
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private readonly IImageProcessor _imageProcessor;
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// These are causing taglib to hang
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private readonly string[] _includeExtensions = new string[] { ".jpg", ".jpeg", ".png", ".tiff", ".cr2", ".webp", ".avif" };
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/// <summary>
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/// Initializes a new instance of the <see cref="PhotoProvider" /> class.
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/// </summary>
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/// <param name="logger">The logger.</param>
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/// <param name="imageProcessor">The image processor.</param>
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public PhotoProvider(ILogger<PhotoProvider> logger, IImageProcessor imageProcessor)
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{
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_logger = logger;
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_imageProcessor = imageProcessor;
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}
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/// <inheritdoc />
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public string Name => "Embedded Information";
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/// <inheritdoc />
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public bool HasChanged(BaseItem item, IDirectoryService directoryService)
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{
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if (item.IsFileProtocol)
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{
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var file = directoryService.GetFile(item.Path);
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return file is not null && file.LastWriteTimeUtc != item.DateModified;
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}
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return false;
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}
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/// <inheritdoc />
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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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if (_includeExtensions.Contains(Path.GetExtension(item.Path), StringComparison.OrdinalIgnoreCase))
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{
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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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if (file.GetTag(TagTypes.TiffIFD) is IFDTag tag)
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{
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var structure = tag.Structure;
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if (structure is not null
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&& structure.GetEntry(0, (ushort)IFDEntryTag.ExifIFD) is SubIFDEntry exif)
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{
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var exifStructure = exif.Structure;
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if (exifStructure is not 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 is not null)
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{
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item.Aperture = (double)entry.Value.Numerator / entry.Value.Denominator;
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}
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entry = exifStructure.GetEntry(0, (ushort)ExifEntryTag.ShutterSpeedValue) as RationalIFDEntry;
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if (entry is not null)
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{
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item.ShutterSpeed = (double)entry.Value.Numerator / entry.Value.Denominator;
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}
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}
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}
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}
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if (file is TagLib.Image.File image)
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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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item.CommunityRating = rating.HasValue ? rating : null;
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item.Overview = image.ImageTag.Comment;
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if (!string.IsNullOrWhiteSpace(image.ImageTag.Title)
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&& !item.LockedFields.Contains(MetadataField.Name))
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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;
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item.Tags = image.ImageTag.Keywords;
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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 if (Enum.TryParse(image.ImageTag.Orientation.ToString(), true, out ImageOrientation orientation))
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{
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item.Orientation = orientation;
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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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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Image Provider - Error reading image tag for {0}", item.Path);
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}
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}
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if (item.Width <= 0 || item.Height <= 0)
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{
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var img = item.GetImageInfo(ImageType.Primary, 0);
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try
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{
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var size = _imageProcessor.GetImageDimensions(item, img);
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if (size.Width > 0 && size.Height > 0)
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{
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item.Width = size.Width;
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item.Height = size.Height;
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}
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}
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catch (ArgumentException)
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{
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// format not supported
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}
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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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}
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}
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