/// <summary>
/// Reads and writes complex EXIF tags
/// </summary>
private static void ProcessComplexExifTypes()
{
using (var jpegReader = new JpegReader("../../../../_Input/Chicago.jpg"))
using (var jpegWriter = new JpegWriter("../../../../_Output/ProcessComplexExifTypes.jpg", 70))
{
var exif = new Aurigma.GraphicsMill.Codecs.ExifDictionary(jpegReader.Exif);
Object[] latitude = null;
if (exif.Contains(ExifDictionary.GpsLatitude))
{
latitude = exif.GetItemArray(ExifDictionary.GpsLatitude);
latitude[0] = new UnsignedRational(113, 12);
}
else
{ // Alexandria, Virginia
latitude = new Object[] { new UnsignedRational(38, 1), new UnsignedRational(48, 1), new UnsignedRational(17, 1) };
}
exif.SetItemArray(ExifDictionary.GpsLatitude, latitude);
var gpsVer = new Object[] { (byte)2, (byte)0, (byte)0, (byte)1 };
exif.SetItemArray(ExifDictionary.GpsVersionId, gpsVer);
exif[Aurigma.GraphicsMill.Codecs.ExifDictionary.Software] = "Aurigma Graphics Mill";
jpegWriter.Exif = exif;
Aurigma.GraphicsMill.Pipeline.Run(jpegReader + jpegWriter);
}
}
public void ModifyUnsignedRational()
{
string key = "Exif.Canon.0x0018";
UnsignedRational.Element[] data = new UnsignedRational.Element[2];
data[0].Nominator = 1;
data[0].Denominator = 2;
data[1].Nominator = 3;
data[1].Denominator = 4;
image[key] = new UnsignedRational(data);
image.Save();
image.Dispose();
Image imageRead = new Image(imageFileName);
UnsignedRational.Element[] readData = (imageRead[key] as UnsignedRational).Value;
Assert.AreEqual(data, readData);
}
