private String getExifData(ImagePlus imp) {
FileInfo fi = imp.getOriginalFileInfo();
if (fi == null) return null;
String directory = fi.directory;
String name = fi.fileName;
if (directory == null) return null;
if ((name == null || name.equals("")) && imp.getStack().isVirtual())
name = imp.getStack().getSliceLabel(imp.getCurrentSlice());
if (name == null || !(name.endsWith("jpg") || name.endsWith("JPG"))) return null;
String path = directory + name;
String metadata = null;
try {
Class c = IJ.getClassLoader().loadClass("Exif_Reader");
if (c == null) return null;
String methodName = "getMetadata";
Class[] argClasses = new Class[1];
argClasses[0] = methodName.getClass();
Method m = c.getMethod("getMetadata", argClasses);
Object[] args = new Object[1];
args[0] = path;
Object obj = m.invoke(null, args);
metadata = obj != null ? obj.toString() : null;
} catch (Exception e) {
return null;
}
if (metadata != null && !metadata.startsWith("Error:")) return metadata;
else return null;
}
