private void getMetadatas()
{
JpegMetadataReader jpegMetadatas = new JpegMetadataReader(new Uri(uri).LocalPath);
jpegMetadatas.RetrieveMetadatas();
metadatas = new Molecule.Collections.Dictionary<string, string>();
foreach(KeyValuePair<string, string> kvp in jpegMetadatas.CommonMetadatas)
{
metadatas.Add(kvp.Key, kvp.Value);
}
if( jpegMetadatas.ContainsGPSInformation )
{
this.latitude = jpegMetadatas.Latitude;
this.longitude = jpegMetadatas.Longitude;
}
}
public void RetrieveMetadatas()
{
commonMetadatas = new Molecule.Collections.Dictionary<string,string>();
// Loading all meta data
com.drew.metadata.Metadata photoMedatas = com.drew.imaging.jpg.JpegMetadataReader.ReadMetadata(jpegFileInfo);
if (photoMedatas.ContainsDirectory( typeof(com.drew.metadata.exif.ExifDirectory)))
{
// Make
AbstractDirectory exifDirectory = photoMedatas.GetDirectory(typeof(com.drew.metadata.exif.ExifDirectory).ToString());
if( exifDirectory.ContainsTag(com.drew.metadata.exif.ExifDirectory.TAG_MAKE))
{
commonMetadatas.Add(exifDirectory.GetTagName(com.drew.metadata.exif.ExifDirectory.TAG_MAKE),
exifDirectory.GetString( com.drew.metadata.exif.ExifDirectory.TAG_MAKE));
}
// Model
if( exifDirectory.ContainsTag(com.drew.metadata.exif.ExifDirectory.TAG_MODEL))
{
commonMetadatas.Add(exifDirectory.GetTagName(com.drew.metadata.exif.ExifDirectory.TAG_MODEL),
exifDirectory.GetString( com.drew.metadata.exif.ExifDirectory.TAG_MODEL));
}
// Model
if( exifDirectory.ContainsTag(com.drew.metadata.exif.ExifDirectory.TAG_APERTURE))
{
commonMetadatas.Add(exifDirectory.GetTagName(com.drew.metadata.exif.ExifDirectory.TAG_APERTURE),
exifDirectory.GetDescription( com.drew.metadata.exif.ExifDirectory.TAG_APERTURE));
}
if( exifDirectory.ContainsTag(com.drew.metadata.exif.ExifDirectory.TAG_FLASH))
{
commonMetadatas.Add(exifDirectory.GetTagName(com.drew.metadata.exif.ExifDirectory.TAG_FLASH),
exifDirectory.GetDescription( com.drew.metadata.exif.ExifDirectory.TAG_FLASH));
}
if( exifDirectory.ContainsTag(com.drew.metadata.exif.ExifDirectory.TAG_ISO_EQUIVALENT))
{
commonMetadatas.Add(exifDirectory.GetTagName(com.drew.metadata.exif.ExifDirectory.TAG_ISO_EQUIVALENT),
exifDirectory.GetString( com.drew.metadata.exif.ExifDirectory.TAG_ISO_EQUIVALENT));
}
if( exifDirectory.ContainsTag(com.drew.metadata.exif.ExifDirectory.TAG_FOCAL_LENGTH))
{
commonMetadatas.Add(exifDirectory.GetTagName(com.drew.metadata.exif.ExifDirectory.TAG_FOCAL_LENGTH),
exifDirectory.GetString( com.drew.metadata.exif.ExifDirectory.TAG_FOCAL_LENGTH));
}
if( exifDirectory.ContainsTag(com.drew.metadata.exif.ExifDirectory.TAG_FOCAL_LENGTH_IN_35MM_FILM))
{
commonMetadatas.Add(exifDirectory.GetTagName(com.drew.metadata.exif.ExifDirectory.TAG_FOCAL_LENGTH_IN_35MM_FILM),
exifDirectory.GetString( com.drew.metadata.exif.ExifDirectory.TAG_FOCAL_LENGTH_IN_35MM_FILM));
}
}
if (photoMedatas.ContainsDirectory( typeof(com.drew.metadata.exif.GpsDirectory)))
{
AbstractDirectory gpsDirectory = photoMedatas.GetDirectory(typeof(com.drew.metadata.exif.GpsDirectory).ToString());
if( gpsDirectory.ContainsTag(com.drew.metadata.exif.GpsDirectory.TAG_GPS_LATITUDE) &&
gpsDirectory.ContainsTag(com.drew.metadata.exif.GpsDirectory.TAG_GPS_LONGITUDE))
{
Rational[] latitudeRationals = gpsDirectory.GetRationalArray(com.drew.metadata.exif.GpsDirectory.TAG_GPS_LATITUDE);
this.ContainsGPSInformation = true;
this.Latitude =
(gpsDirectory.GetString( com.drew.metadata.exif.GpsDirectory.TAG_GPS_LONGITUDE_REF).Equals("N")? -1 : 1 )*
ConvertDMSToDecimalDegrees(latitudeRationals[0].DoubleValue(),
latitudeRationals[1].DoubleValue(),
latitudeRationals[2].DoubleValue());
Rational[] longitudeRationals = gpsDirectory.GetRationalArray(com.drew.metadata.exif.GpsDirectory.TAG_GPS_LONGITUDE);
this.Longitude =
(gpsDirectory.GetString( com.drew.metadata.exif.GpsDirectory.TAG_GPS_LONGITUDE_REF).Equals("W")? -1 : 1 )*
ConvertDMSToDecimalDegrees(longitudeRationals[0].DoubleValue(),
longitudeRationals[1].DoubleValue(),
longitudeRationals[2].DoubleValue());
}
}
}
