public static void ChangeCaptureDate(string directory, LongTimeSpan timeDiff, string filter = ".jpg|.jpeg", string camerafilter = null, BackgroundWorker worker = null, DoWorkEventArgs e = null)
{
DirectoryInfo dirInfo = new DirectoryInfo(directory);
FileInfo[] fileInfos = dirInfo.GetFiles();
int progress = 0;
foreach (var fileInfo in fileInfos)
{
if (ApplyFilter(fileInfo.Name, filter))
{
ChangeCaptureDateInFile(fileInfo.FullName, timeDiff, camerafilter);
}
progress++;
if (worker != null)
{
if (worker.CancellationPending == true)
{
e.Cancel = true;
return;
}
else
{
worker.ReportProgress(100 * progress / fileInfos.Length);
}
}
}
return;
}
public static void ChangeCaptureDateInFile(string fullFilename, LongTimeSpan timeDiff, string camerafilter = null)
{
string capDate = "";
Encoding enc = Encoding.Default;
DateTime datetime;
Byte[] bytes = File.ReadAllBytes(fullFilename);
using (MemoryStream stream = new MemoryStream(bytes))
using (Image img = Image.FromStream(stream))
{
if (camerafilter != null)
{
ImageHeaderInfo info = GetHeaderInfo(img.PropertyItems);
if (camerafilter != info.FullCameraName)
{
return;
}
}
foreach (PropertyItem Info in img.PropertyItems)
{
switch (Info.Id.ToString("X"))
{
case "110":
break;
case "9003":
capDate = enc.GetString(Info.Value, 0, Info.Len - 1);
datetime = DateTime.ParseExact(capDate, "yyyy:MM:dd HH:mm:ss", System.Globalization.CultureInfo.InvariantCulture);
datetime = timeDiff.IncreaseDateTime(datetime);
List <byte> zero = new List <byte>(new byte[] { 0 });
byte[] newValue = enc.GetBytes(datetime.ToString("yyyy:MM:dd HH:mm:ss")).Concat(zero).ToArray();
Info.Value = newValue;
Info.Len = newValue.Length;
img.SetPropertyItem(Info);
break;
}
}
img.Save(fullFilename);
}
}
