Struct FrameRateRatio 

pub struct FrameRateRatio {
    pub numerator: u32,
    pub denominator: u32,
}

A rational frame rate expressed as numerator / denominator.

This complements the crate::FrameRate enum with arbitrary-precision rational arithmetic so that custom frame rates (e.g. 48000/1001) can be represented without adding new enum variants.

Fields

numerator: u32

Numerator of the frame rate fraction.

denominator: u32

Denominator of the frame rate fraction.

Implementations

impl FrameRateRatio

pub fn new(numerator: u32, denominator: u32) -> Option<Self>

Create a new FrameRateRatio.

Returns None if denominator is zero.

pub fn fps_f64(&self) -> f64

Exact floating-point value of the frame rate.

pub fn is_drop_frame_compatible(&self) -> bool

Whether this frame rate is compatible with SMPTE drop-frame timecode.

Drop frame is only defined for the 30000/1001 (≈ 29.97) and 60000/1001 (≈ 59.94) rates.

pub fn matches(&self, other: &FrameRateRatio) -> bool

Whether this ratio is numerically equal to other (cross-multiply check).

pub fn common_frame_rates() -> Vec<FrameRateRatio>

A list of common broadcast frame rates.

pub fn nominal_fps(&self) -> u32

Nominal integer frames per second (rounded).

Trait Implementations

impl Clone for FrameRateRatio

fn clone(&self) -> FrameRateRatio

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FrameRateRatio

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for FrameRateRatio

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for FrameRateRatio

fn eq(&self, other: &FrameRateRatio) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for FrameRateRatio

impl Eq for FrameRateRatio

impl StructuralPartialEq for FrameRateRatio