Exif -> UIImageOrientation

gistfile1.txt

// Convert an EXIF image orientation to an iOS one.
// reference see here: http://sylvana.net/jpegcrop/exif_orientation.html

+ (UIImageOrientation) exifOrientationToiOSOrientation:(int)exifOrientation {
    UIImageOrientation o = UIImageOrientationUp;
    switch (exifOrientation) {
        case 1: o = UIImageOrientationUp; break;
        case 3: o = UIImageOrientationDown; break;
        case 8: o = UIImageOrientationLeft; break;
        case 6: o = UIImageOrientationRight; break;
        case 2: o = UIImageOrientationUpMirrored; break;
        case 4: o = UIImageOrientationDownMirrored; break;
        case 5: o = UIImageOrientationLeftMirrored; break;
        case 7: o = UIImageOrientationRightMirrored; break; default: break;
    }
    return o;
}