/// <summary>
/// Consolidates EXIF GPS values into XMP style
/// </summary>
/// <param name="gps"></param>
/// <param name="priority"></param>
/// <returns></returns>
private IEnumerable <XmpProperty> ProcessGps(IEnumerable <XmpProperty> gps, decimal priority)
{
GpsCoordinate latitude = null, longitude = null, destLatitude = null, destLongitude = null;
string latitudeRef = null, longitudeRef = null, destLatitudeRef = null, destLongitudeRef = null;
foreach (XmpProperty property in gps)
{
if (!(property.Schema is ExifSchema))
{
yield return(property);
continue;
}
switch ((ExifSchema)property.Schema)
{
case ExifSchema.GPSLatitude:
{
GpsCoordinate.TryParse(Convert.ToString(property.Value), out latitude);
break;
}
case ExifSchema.GPSLatitudeRef:
{
latitudeRef = Convert.ToString(property.Value);
break;
}
case ExifSchema.GPSLongitude:
{
GpsCoordinate.TryParse(Convert.ToString(property.Value), out longitude);
break;
}
case ExifSchema.GPSLongitudeRef:
{
longitudeRef = Convert.ToString(property.Value);
break;
}
case ExifSchema.GPSDestLatitude:
{
GpsCoordinate.TryParse(Convert.ToString(property.Value), out destLatitude);
break;
}
case ExifSchema.GPSDestLatitudeRef:
{
destLatitudeRef = Convert.ToString(property.Value);
break;
}
case ExifSchema.GPSDestLongitude:
{
GpsCoordinate.TryParse(Convert.ToString(property.Value), out destLongitude);
break;
}
case ExifSchema.GPSDestLongitudeRef:
{
destLongitudeRef = Convert.ToString(property.Value);
break;
}
case ExifSchema.GPSDateStamp:
case ExifSchema.GPSTimeStamp:
case ExifSchema.GPSAltitude:
case ExifSchema.GPSAltitudeRef:
case ExifSchema.GPSDestBearing:
case ExifSchema.GPSDestBearingRef:
case ExifSchema.GPSDestDistance:
case ExifSchema.GPSDestDistanceRef:
case ExifSchema.GPSImgDirection:
case ExifSchema.GPSImgDirectionRef:
case ExifSchema.GPSSpeed:
case ExifSchema.GPSSpeedRef:
case ExifSchema.GPSTrack:
case ExifSchema.GPSTrackRef:
default:
{
// TODO: process other dual properties
yield return(property);
break;
}
}
}
if (latitude != null)
{
if (!String.IsNullOrEmpty(latitudeRef))
{
latitude.Direction = latitudeRef;
}
yield return(new XmpProperty
{
Schema = ExifSchema.GPSLatitude,
Value = latitude.ToString("X"),
Priority = priority
});
}
if (longitude != null)
{
if (!String.IsNullOrEmpty(longitudeRef))
{
longitude.Direction = longitudeRef;
}
yield return(new XmpProperty
{
Schema = ExifSchema.GPSLongitude,
Value = longitude.ToString("X"),
Priority = priority
});
}
if (destLatitude != null)
{
if (!String.IsNullOrEmpty(destLatitudeRef))
{
destLatitude.Direction = destLatitudeRef;
}
yield return(new XmpProperty
{
Schema = ExifSchema.GPSDestLatitude,
Value = destLatitude.ToString("X"),
Priority = priority
});
}
if (destLongitude != null)
{
if (!String.IsNullOrEmpty(destLongitudeRef))
{
destLongitude.Direction = destLongitudeRef;
}
yield return(new XmpProperty
{
Schema = ExifSchema.GPSDestLongitude,
Value = destLongitude.ToString("X"),
Priority = priority
});
}
}
internal static XmpProperty ProcessValue(XmpProperty property)
{
if (property.ValueType is XmpBasicType)
{
switch ((XmpBasicType)property.ValueType)
{
case XmpBasicType.Boolean:
{
bool value;
if (Boolean.TryParse(Convert.ToString(property.Value), out value))
{
property.Value = value;
}
break;
}
case XmpBasicType.Date:
{
DateTime value;
if (DateTime.TryParse(Convert.ToString(property.Value), out value))
{
property.Value = value;
}
break;
}
case XmpBasicType.Integer:
{
int value;
if (Int32.TryParse(Convert.ToString(property.Value), out value))
{
property.Value = value;
}
break;
}
case XmpBasicType.Real:
{
decimal value;
if (Decimal.TryParse(Convert.ToString(property.Value), out value))
{
property.Value = value;
}
break;
}
}
}
else if (property.ValueType is ExifType)
{
switch ((ExifType)property.ValueType)
{
case ExifType.GpsCoordinate:
{
GpsCoordinate gps;
if (GpsCoordinate.TryParse(Convert.ToString(property.Value), out gps))
{
property.Value = gps;
}
break;
}
case ExifType.Rational:
{
// TODO: how best to determine type of Rational<T>
XmpPropertyCollection.ProcessRational <long>(property);
break;
}
}
}
return(property);
}
