objc2_core_video

Function CVDisplayLinkGetNominalOutputVideoRefreshPeriod

Source 
pub unsafe extern "C-unwind" fn CVDisplayLinkGetNominalOutputVideoRefreshPeriod(
    display_link: &CVDisplayLink,
) -> CVTime
đź‘ŽDeprecated: use NSView.displayLink(target:selector:), NSWindow.displayLink(target:selector:), or NSScreen.displayLink(target:selector:)
Available on crate features CVDisplayLink and CVBase only.
Expand description

Retrieves the nominal refresh period of a CVDisplayLink.

This call allows one to retrieve the device’s “ideal” refresh period. For example, an NTSC output device might report 1001/60000 to represent the exact NTSC vertial refresh rate.

Parameter displayLink: The CVDisplayLink to get the refresh period from.

Returns: A CVTime struct that holds the nominal refresh period. This value may be indefinite.