Function

CMSyncMightDrift(_:_:)

Returns a Boolean indicating whether it is possible for one timebase/clock to drift relative to the other.

Declaration

func CMSyncMightDrift(_ clockOrTimebase1: CMClockOrTimebase, _ clockOrTimebase2: CMClockOrTimebase) -> Bool

Discussion

A timebase can drift relative to another if they are ultimately mastered by clocks that can drift relative to each other.

See Also

Utility Functions

func CMClockGetTypeID() -> CFTypeID

Returns the CFTypeID of the CMClock.

func CMClockMightDrift(CMClock, otherClock: CMClock) -> Bool

Returns a Boolean that indicates whether it is possible for two clocks to drift relative to each other.

func CMClockInvalidate(CMClock)

Makes the clock stop functioning.

func CMSyncGetRelativeRate(CMClockOrTimebase, relativeTo: CMClockOrTimebase) -> Float64

Queries the relative rate of one timebase or clock relative to another timebase or clock.

func CMSyncGetRelativeRateAndAnchorTime(CMClockOrTimebase, relativeTo: CMClockOrTimebase, relativeRateOut: UnsafeMutablePointer<Float64>?, anchorTimeOut: UnsafeMutablePointer<CMTime>?, relativeToAnchorTimeOut: UnsafeMutablePointer<CMTime>?) -> OSStatus

Queries the relative rate of one timebase or clock relative to another timebase or clock and the times of each timebase or clock at which the relative rate went into effect.

func CMSyncConvertTime(CMTime, from: CMClockOrTimebase, to: CMClockOrTimebase) -> CMTime

Converts a time from one timebase or clock to another timebase or clock.

func CMSyncGetTime(CMClockOrTimebase) -> CMTime

A helper function to get time from a clock or timebase.