How to use this lib to get the photo’s orientation

How to use this lib to get the photo’s orientation:

1. import flash.utils.ByteArray;

2. import fox.photo.SimpleExifExtractor;

3. import fox.photo.exif.ifd.IFDValue;

4. import fox.photo.jpeg.Exif;

5. var orientation:int = -1;

6. var orientationId:int = 274;// in Exif2-2.PDF document, the orientation id is 274

7. var bytes:ByteArray = PhotoData;

8. var exif:Exif=SimpleExifExtractor.readExif(bytes);

9. var tag:IFDValue=exif.findTagById(orientationId);

10. if (tag) // in certain case, it might don’t have orientation infomation.

11. {

12. orientation=parseInt("" + tag.value);

13. }

14. trace('orientation is:'+orientation);