77 lines
2.6 KiB
C#
77 lines
2.6 KiB
C#
using MetadataExtractor;
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using MetadataExtractor.Formats.Exif;
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using View_by_Distance.Shared.Models.Stateless;
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namespace View_by_Distance.Metadata.Models.Stateless.Methods;
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internal class Metadata
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{
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internal static string? GetFaceEncoding(IReadOnlyList<MetadataExtractor.Directory> directories)
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{
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string? result;
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List<string> results = new();
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const string comment = "Comment: ";
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foreach (MetadataExtractor.Directory directory in directories)
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{
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if (directory.Name != "PNG-tEXt")
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continue;
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foreach (Tag tag in directory.Tags)
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{
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if (tag.Name != "Textual Data" || string.IsNullOrEmpty(tag.Description))
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continue;
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if (!tag.Description.StartsWith(comment))
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continue;
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results.Add(tag.Description);
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}
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}
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result = results.Any() ? results[0][comment.Length..] : null;
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return result;
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}
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internal static string? GetOutputResolution(IReadOnlyList<MetadataExtractor.Directory> directories)
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{
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string? result;
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List<string> results = new();
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const string artist = "Artist: ";
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foreach (MetadataExtractor.Directory directory in directories)
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{
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if (directory.Name != "PNG-tEXt")
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continue;
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foreach (Tag tag in directory.Tags)
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{
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if (tag.Name != "Textual Data" || string.IsNullOrEmpty(tag.Description))
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continue;
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if (!tag.Description.StartsWith(artist))
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continue;
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results.Add(tag.Description);
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}
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}
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result = results.Any() ? results[0][artist.Length..] : null;
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return result;
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}
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internal static string? GetModel(IReadOnlyList<MetadataExtractor.Directory> directories)
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{
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string? result;
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ExifDirectoryBase? exifDirectoryBase = directories.OfType<ExifDirectoryBase>().FirstOrDefault();
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if (exifDirectoryBase is null)
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result = null;
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else
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result = exifDirectoryBase.GetString(ExifDirectoryBase.TagModel);
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return result;
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}
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internal static int GetOrientation(List<KeyValuePair<string, string>> metadataCollection)
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{
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int result;
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const string orientation = nameof(IExif.Tags.Orientation);
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List<string> orientations = (from l in metadataCollection where l.Key.Contains(orientation) select l.Value).ToList();
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if (!orientations.Any())
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result = 0;
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else if (!int.TryParse(orientations[0], out result))
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result = 0;
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return result;
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}
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} |