public static ICorrection Reader(ExifDictionary exif)
{
var correction = new CorrectionDto();
if (exif == null)
{ return correction; }
var enumerator = exif.GetDictionaryEnumerator();
while (enumerator.MoveNext())
{
if (enumerator.Current.ToString() == "ColorLabP")
{
// Advance the enumerator to the start of the relevant data.
enumerator.MoveNext();
enumerator.MoveNext();
enumerator.MoveNext();
// Read the data into a new CorrectionDto
correction.Saturation = ConvertSaturation(ReadFloat(enumerator));
correction.Contrast = ConvertContrast(ReadFloat(enumerator));
correction.Midpoint = ConvertMidpoint(ReadFloat(enumerator));
correction.Red = ConvertColor(ReadFloat(enumerator));
correction.Green = ConvertColor(ReadFloat(enumerator));
correction.Blue = ConvertColor(ReadFloat(enumerator));
correction.Rotate = ConvertRotation(ReadFloat(enumerator));
// Exit the loop.
break;
}
}
return correction;
}
private static void ResizeAndPreserveMetadata()
{
using (var jpegReader = new JpegReader("../../../../_Input/Chicago.jpg"))
using (var resizer = new Resize(jpegReader.Width / 2, 0))
using (var jpegWriter = new JpegWriter("../../../../_Output/ResizeAndPreserveMetadata.jpg"))
{
// Read EXIF
var exif = jpegReader.Exif;
// Check if loaded image contains EXIF metadata
if (exif == null)
{
exif = new ExifDictionary();
}
exif[ExifDictionary.Software] = "Aurigma Graphics Mill";
// Read IPTC
var iptc = jpegReader.Iptc;
// Check if loaded image contains IPTC metadata
if (iptc == null)
{
iptc = new IptcDictionary();
}
iptc[IptcDictionary.Keyword] = "mountain";
// Read Adobe resource blocks
var adobeResources = jpegReader.AdobeResources;
// Check if loaded image contains Adobe image resource blocks
if (adobeResources == null)
{
adobeResources = new AdobeResourceDictionary();
}
// Create new adobe image resource block containing copyright metadata
var arBlock = new AdobeResourceBlock("Copyright", new byte[] { 1 });
// Set this block to the item with 0x040A ID (copyright flag)
adobeResources[0x040A] = arBlock;
// Read XMP
var xmp = new XmpData();
//Check if loaded image contains XMP metadata
if (jpegReader.Xmp != null)
{
xmp.Load(jpegReader.Xmp);
}
// Create a node containing dc:contributor metadata
var node = new XmpValueNode(XmpNodeType.SimpleProperty, "John Doe", XmpTagNames.DCContributor);
xmp.AddNode(node);
// Write metadata
jpegWriter.Exif = exif;
jpegWriter.Iptc = iptc;
jpegWriter.AdobeResources = adobeResources;
jpegWriter.Xmp = xmp.Save();
Pipeline.Run(jpegReader + resizer + jpegWriter);
}
}
protected DpofImageFormat GetImageFormat(string filePath)
{
ExifDictionary exif = null;
if (filePath.EndsWith("jpg", StringComparison.InvariantCultureIgnoreCase) || filePath.EndsWith("jpeg", StringComparison.InvariantCultureIgnoreCase))
{
try
{
using (var jpegReader = new JpegReader(filePath))
{
exif = jpegReader.Exif;
if (exif != null)
{
try
{
var version = exif.GetItemString(ExifDictionary.ExifVersion);
if (version == "0220")
{
return(DpofImageFormat.EXIF2J);
}
if (version == "0210")
{
return(DpofImageFormat.EXIF1J);
}
}
catch (Exception) { }
}
return(DpofImageFormat.JFIF);
}
}
catch (Exception) { exif = null; }
}
if (filePath.EndsWith("tiff", StringComparison.InvariantCultureIgnoreCase) || filePath.EndsWith("tif", StringComparison.InvariantCultureIgnoreCase))
{
try
{
using (var tiffReader = new TiffReader(filePath))
{
exif = tiffReader.Exif;
if (exif != null)
{
try
{
var version = exif.GetItemString(ExifDictionary.ExifVersion);
if (version == "0220")
{
return(DpofImageFormat.EXIF2T);
}
if (version == "0210")
{
return(DpofImageFormat.EXIF1T);
}
}
catch (Exception) { }
}
return(DpofImageFormat.UNDEF);
}
}
catch (Exception) { exif = null; }
}
if (exif != null)
{
}
return(DpofImageFormat.UNDEF);
}
