[QUESTION] Using 'XMP::GPano::PoseHeadingDegrees' EXIF data to add an offset when using SensorControl.AbsoluteOrientation,

[cellininicholas]

When viewing a photosphere using the device compass, I'd like the image to be correctly oriented to the real world.
This is when using...
sensorControl: SensorControl.AbsoluteOrientation

I've been looking into the metadata of a generated photosphere image, and have found that there is metadata that describes the bearing of a photosphere image.
https://developers.google.com/streetview/spherical-metadata
GPano:PoseHeadingDegrees: Compass heading, measured in degrees clockwise from North, for the center the image. Value must be >= 0 and < 360.

Is there a way to add a heading offset already, or would it be a simple task to implement one?
I'd be happy to fork and implement myself, especially if anyone is willing to point me in the right direction.
Thanks!