This enumeration determines the barcode's orientation on the scanned image.
Values:
| IG_TW_BCOR_ROT0 | Normal reading orientation. |
| IG_TW_BCOR_ROT180 | Rotated 180 degrees clockwise. |
| IG_TW_BCOR_ROT270 | Rotated 270 degrees clockwise. |
| IG_TW_BCOR_ROT90 | Rotated 90 degrees clockwise. |
| IG_TW_BCOR_ROTX | The orientation is not known. |