Provide a human-readable name of a given AVSphericalProjection.
@param projection The input AVSphericalProjection.
@return The name of the AVSphericalProjection, or "unknown".
See Implementation
Provide a human-readable name of a given AVSphericalProjection.
@param projection The input AVSphericalProjection.
@return The name of the AVSphericalProjection, or "unknown".