private void GetGpsData()
{
this.progressBar1.Maximum = _fileNames.Count();
this.progressBar1.Value = 0;
this.progressBar1.Visible = true;
TaskScheduler taskScheduler = TaskScheduler.FromCurrentSynchronizationContext();
Task.Factory.StartNew(() =>
{
foreach (string filename in _fileNames)
{
if (!File.Exists(filename))
{
continue;
}
Image image = Image.FromFile(filename);
GpsMetaData gpsData = image.GetGpsInfo();
image.Dispose();
ImageGpsMetaData imgGpsMetaData = new ImageGpsMetaData();
imgGpsMetaData.Altitude = gpsData.Altitude;
imgGpsMetaData.Latitude = gpsData.Latitude;
imgGpsMetaData.Longitude = gpsData.Longitude;
imgGpsMetaData.Timestamp = gpsData.Timestamp;
imgGpsMetaData.FileName = filename;
_imageGpsMetaData.Add(imgGpsMetaData);
var token = Task.Factory.CancellationToken;
Task reportProgressTask = Task.Factory.StartNew(() =>
{
this.progressBar1.Value += 1;
ListViewItem item = this.listView1.Items.Add(filename);
if (gpsData.Latitude != Double.MinValue && gpsData.Longitude != Double.MinValue)
{
item.SubItems.Add(gpsData.Latitude.ToString());
item.SubItems.Add(gpsData.Longitude.ToString());
}
if (gpsData.Altitude != Double.MinValue)
{
item.SubItems.Add(gpsData.Altitude.ToString());
}
if (gpsData.Timestamp != DateTime.MinValue)
{
item.SubItems.Add(gpsData.Timestamp.ToString("MM/dd/yyyy hh:mm:ss"));
}
if (this.progressBar1.Value == this.progressBar1.Maximum)
{
this.progressBar1.Visible = false;
}
}, token, TaskCreationOptions.None, taskScheduler);
reportProgressTask.Wait();
}
});
}
public static GpsMetaData GetGpsInfo(this Image image)
{
double?lat = GetLatitude(image);
double?lon = GetLongitude(image);
var dTs = GetGpsDateTimeStamp(image);
var alt = GetAltitude(image);
var dTaken = GetDateTaken(image);
var result = new GpsMetaData();
if (lat.HasValue)
{
result.Latitude = lat.Value;
}
if (lon.HasValue)
{
result.Longitude = lon.Value;
}
if (alt.HasValue)
{
result.Altitude = alt.Value;
}
if (dTs.HasValue)
{
result.Timestamp = dTs.Value;
}
else if (dTaken.HasValue)
{
result.Timestamp = dTaken.Value;
}
return(result);
}