/// <summary>
/// Extract exif data from picture directories.
/// </summary>
/// <param name="pictureDirectory"></param>
/// <param name="pictureExiftag"></param>
/// <returns></returns>
public string GetExifData(MetadataExtractor.Directory pictureDirectory, int pictureExiftag)
{
var exifData = pictureDirectory?.GetDescription(pictureExiftag);
var pictureExifData = (!string.IsNullOrEmpty(exifData)) ?
(pictureExifMetaData.SpaceTabulation + exifData) :
pictureExifMetaData.TabEmpty;
return(pictureExifData);
}
/// <summary>
/// Copmare if two exif tags has the same value
/// </summary>
/// <param name="tag"></param>
/// <param name="subDir1"></param>
/// <param name="subDif2"></param>
/// <returns>true if not null and has the same value</returns>
private static bool CompareDir(int tag, MetadataExtractor.Directory subDir1, MetadataExtractor.Directory subDif2)
{
var width1 = subDir1?.GetDescription(tag);
var width2 = subDif2?.GetDescription(tag);
if (width1 == null && width2 == null)
{
return(true);
}
return(width1 != null && width1.Equals(width2));
}