exifOrientation.m

exifOrientation.mm

	UIDeviceOrientation curDeviceOrientation = [[UIDevice currentDevice] orientation];
	
	enum {
		PHOTOS_EXIF_0ROW_TOP_0COL_LEFT			= 1, //   1  =  0th row is at the top, and 0th column is on the left (THE DEFAULT).
		PHOTOS_EXIF_0ROW_TOP_0COL_RIGHT			= 2, //   2  =  0th row is at the top, and 0th column is on the right.  
		PHOTOS_EXIF_0ROW_BOTTOM_0COL_RIGHT      = 3, //   3  =  0th row is at the bottom, and 0th column is on the right.  
		PHOTOS_EXIF_0ROW_BOTTOM_0COL_LEFT       = 4, //   4  =  0th row is at the bottom, and 0th column is on the left.  
		PHOTOS_EXIF_0ROW_LEFT_0COL_TOP          = 5, //   5  =  0th row is on the left, and 0th column is the top.  
		PHOTOS_EXIF_0ROW_RIGHT_0COL_TOP         = 6, //   6  =  0th row is on the right, and 0th column is the top.  
		PHOTOS_EXIF_0ROW_RIGHT_0COL_BOTTOM      = 7, //   7  =  0th row is on the right, and 0th column is the bottom.  
		PHOTOS_EXIF_0ROW_LEFT_0COL_BOTTOM       = 8  //   8  =  0th row is on the left, and 0th column is the bottom.  
	};
	
	int exifOrientation;
	switch (curDeviceOrientation) {
		case UIDeviceOrientationPortraitUpsideDown:  // Device oriented vertically, home button on the top
			exifOrientation = PHOTOS_EXIF_0ROW_LEFT_0COL_BOTTOM;
			break;
		case UIDeviceOrientationLandscapeLeft:       // Device oriented horizontally, home button on the right
			if (UserDefaults.usingFrontCamera)
				exifOrientation = PHOTOS_EXIF_0ROW_BOTTOM_0COL_RIGHT;
			else
				exifOrientation = PHOTOS_EXIF_0ROW_TOP_0COL_LEFT;
			break;
		case UIDeviceOrientationLandscapeRight:      // Device oriented horizontally, home button on the left
			if (UserDefaults.usingFrontCamera)
				exifOrientation = PHOTOS_EXIF_0ROW_TOP_0COL_LEFT;
			else
				exifOrientation = PHOTOS_EXIF_0ROW_BOTTOM_0COL_RIGHT;
			break;
		case UIDeviceOrientationPortrait:            // Device oriented vertically, home button on the bottom
		default:
			exifOrientation = PHOTOS_EXIF_0ROW_RIGHT_0COL_TOP;
			break;
	}