Mobile Media orientation

The information of media orientation from google reference and iOS reference.

==========<Android>=========
https://developer.android.com/reference/android/media/MediaMetadataRetriever.html#METADATA_KEY_VIDEO_ROTATION

METADATA_KEY_VIDEO_ROTATION

Added in API level 17

public static final int METADATA_KEY_VIDEO_ROTATION

This key retrieves the video rotation angle in degrees, if available. The video rotation angle may be 0, 90, 180, or 270 degrees.

Constant Value: 24 (0x00000018)

METADATA_KEY_IMAGE_ROTATION

Added in API level 28

public static final int METADATA_KEY_IMAGE_ROTATION

If the media contains still images, this key retrieves the rotation angle (in degrees clockwise) of the primary image. The image rotation angle must be one of 0, 90, 180, or 270 degrees.

Constant Value: 31 (0x0000001f)

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So Mobile Media Picker defines as following.

// Video Orientation

- API17 or higher

  Unknown = -1,

  Portrait = 1,

  UpsideDown = 2,

  LandscapeRight = 3,

  LandscapeLeft = 4,

- API16

 Portrait = 1,

 Landscape = 0

// Image Orientation

 Up = 0,

 Down = 1,

 Left = 2,

 Right = 3,

=========<iOS>=========

// Video Orientation

    UIInterfaceOrientationUnknown            = UIDeviceOrientationUnknown, // 0

    UIInterfaceOrientationPortrait           = UIDeviceOrientationPortrait, // 1 home button on the bottom

    UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown, // 2 home button on the top

    UIInterfaceOrientationLandscapeLeft      = UIDeviceOrientationLandscapeRight, // 4 home button on the left

    UIInterfaceOrientationLandscapeRight     = UIDeviceOrientationLandscapeLeft // 3 home button on the right

// Image Orientation

    UIImageOrientationUp,            // default orientation

    UIImageOrientationDown,          // 180 deg rotation

    UIImageOrientationLeft,          // 90 deg CCW

    UIImageOrientationRight,         // 90 deg CW

    UIImageOrientationUpMirrored, // as above but image mirrored along other axis. horizontal flip

    UIImageOrientationDownMirrored,  // horizontal flip

    UIImageOrientationLeftMirrored,  // vertical flip

    UIImageOrientationRightMirrored, // vertical flip

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