Declaration
// Possible values for EXIF_Orientation
_exoUnknown = 0; // Image does not have orientation data
_exoCorrectOrientation = 1; // Image is orientated correctly
_exoNeedsHorizontalFlip = 2; // Image is horizontally flipped
_exoNeeds180Rotate = 3; // Image is offset by 180°
_exoNeedsVerticalFlip = 4; // Image is vertically flipped
_exoNeedsHorzFlipAnd90RotateCW = 5; // Image is horizontally flipped and offset 90° CCW
_exoNeeds90RotateCW = 6; // Image is offset by 90° counter-clockwise
_exoNeedsHorzFlipAnd270RotateCW = 7; // Image is horizontally flipped and offset 90° CW
_exoNeeds270RotateCW = 8; // Image is offset by 90° clockwise