Static kCMFormatDescriptionExtension_HasAdditionalViews 

pub unsafe static kCMFormatDescriptionExtension_HasAdditionalViews: &'static CFString

Available on crate feature CMFormatDescription only.

Indicates that one or more additional views may be present beyond stereo left and stereo right eyes (e.g,. a “centerline” view).

The value is a CFBoolean holding presence of additional eye views in the stream.

See also Apple’s documentation