protected override void PullImageProperties ()
{
DirectoryEntry e;
Header header = new Header (Stream);
e = header.Directory.Lookup (TagId.ExifIfdPointer);
if (e != null) {
ImageDirectory exif = ((SubdirectoryEntry)e).Directory [0];
AddTiffDirectoryProperties (this, exif);
}
e = header.Directory.Lookup (TagId.SubIFDs);
if (e != null) {
ImageDirectory [] dirs = ((SubdirectoryEntry)e).Directory;
foreach (ImageDirectory subdir in dirs)
AddTiffDirectoryProperties (this, subdir);
}
// we filter ifd0 last so that we pick up the
// width and height from the full resolution
// version if it exists
AddTiffDirectoryProperties (this, header.Directory);
}
protected void LoadBlocks()
{
using (System.IO.Stream file = Open()) {
mrm = new MrmBlock(file);
try {
foreach (Block b in mrm.Blocks)
{
if (b is TtwBlock)
{
TtwBlock ttw = (TtwBlock)b;
header = ttw.TiffHeader;
//Header.Dump ("TTW:");
break;
}
}
} catch (System.Exception e) {
//System.Console.WriteLine (e.ToString ());
}
}
}
protected void LoadBlocks ()
{
using (System.IO.Stream file = Open ()) {
mrm = new MrmBlock (file);
try {
foreach (Block b in mrm.Blocks) {
if (b is TtwBlock) {
TtwBlock ttw = (TtwBlock) b;
header = ttw.TiffHeader;
//Header.Dump ("TTW:");
break;
}
}
} catch (System.Exception e) {
//System.Console.WriteLine (e.ToString ());
}
}
}
public FSpot.Tiff.Header GetExifHeader ()
{
string name = ExifSignature.Name;
Marker marker = FindMarker (ExifSignature);
if (marker == null)
return null;
using (System.IO.Stream exifstream = new System.IO.MemoryStream (marker.Data, name.Length, marker.Data.Length - name.Length, false)) {
FSpot.Tiff.Header exif = new FSpot.Tiff.Header (exifstream);
return exif;
}
}
private void AddExifProperties(JpegHeader header)
{
Tiff.Header ifd = header.GetExifHeader();
if (ifd == null)
{
return;
}
//ifd.Dump ("foo"); // Uncomment to debug
string str;
Tiff.DirectoryEntry entry;
// Add IFD 0 properies
str = GetExifString(ifd.Directory, Tiff.TagId.Model);
AddProperty(Beagle.Property.New("exif:Model", str));
str = GetExifString(ifd.Directory, Tiff.TagId.ImageDescription);
AddProperty(Beagle.Property.New("exif:ImageDescription", str));
try {
entry = ifd.Directory.Lookup(Tiff.TagId.DateTime);
if (entry != null)
{
// Assume datetime stored in the images are local times
AddProperty(Beagle.Property.NewDate("exif:DateTime", entry.ValueAsDate.ToUniversalTime()));
}
} catch (FormatException) {
Logger.Log.Debug("EXIF DateTime '{0}' is invalid.", GetExifString(ifd.Directory, Tiff.TagId.DateTime));
} catch (ArgumentOutOfRangeException) {
Logger.Log.Debug("EXIF DateTime '{0}' is invalid.", GetExifString(ifd.Directory, Tiff.TagId.DateTime));
}
str = GetExifString(ifd.Directory, Tiff.TagId.Copyright);
AddProperty(Beagle.Property.New("dc:rights", str));
// Add IFD 1 properties
Tiff.SubdirectoryEntry subdir = (Tiff.SubdirectoryEntry)ifd.Directory.Lookup(Tiff.TagId.ExifIfdPointer);
if (subdir == null)
{
return;
}
Tiff.ImageDirectory exif = subdir.Directory [0];
if (exif == null)
{
return;
}
entry = exif.Lookup(Tiff.TagId.UserComment);
if (entry != null)
{
AddProperty(Beagle.Property.New("exif:UserComment", entry.UserCommentValue));
}
uint val = 0;
entry = exif.Lookup(Tiff.TagId.PixelXDimension);
if (entry != null)
{
val = entry.ValueAsLong [0];
}
if (val > 0)
{
Width = (int)val;
AddProperty(Beagle.Property.NewUnsearched("exif:PixelXDimension", val));
}
val = 0;
entry = exif.Lookup(Tiff.TagId.PixelYDimension);
if (entry != null)
{
val = entry.ValueAsLong [0];
}
if (val > 0)
{
Height = (int)val;
AddProperty(Beagle.Property.NewUnsearched("exif:PixelYDimension", val));
}
str = GetExifString(exif, Tiff.TagId.ISOSpeedRatings);
AddProperty(Beagle.Property.NewUnsearched("exif:ISOSpeedRatings", str));
str = GetExifString(exif, Tiff.TagId.ShutterSpeedValue);
AddProperty(Beagle.Property.NewUnsearched("exif:ShutterSpeedValue", str));
str = GetExifString(exif, Tiff.TagId.ExposureTime);
if (!String.IsNullOrEmpty(str))
{
AddProperty(Beagle.Property.NewUnsearched("exif:ExposureTime", str + " sec."));
}
double rational_val;
rational_val = GetExifRational(exif, Tiff.TagId.FNumber);
if (rational_val > 0)
{
AddProperty(Beagle.Property.NewUnsearched("exif:FNumber", String.Format("f/{0}", rational_val)));
}
rational_val = GetExifRational(exif, Tiff.TagId.ApertureValue);
if (rational_val > 0)
{
AddProperty(Beagle.Property.NewUnsearched("exif:ApertureValue", rational_val));
}
rational_val = GetExifRational(exif, Tiff.TagId.FocalLength);
if (rational_val > 0)
{
AddProperty(Beagle.Property.NewUnsearched("exif:FocalLength", String.Format("{0} mm", rational_val)));
}
entry = exif.Lookup(Tiff.TagId.Flash);
if (entry != null)
{
ushort flash = entry.ShortValue [0];
AddProperty(Beagle.Property.NewUnsearched("exif:Flash", GetFlashString(flash)));
}
}