Struct ffmpeg_the_third::util::rational::Rational

pub struct Rational(pub i32, pub i32);

Tuple Fields

0: i32

1: i32

Implementations

impl Rational

pub fn new(numerator: i32, denominator: i32) -> Self

pub fn numerator(&self) -> i32

pub fn denominator(&self) -> i32

pub fn reduce(&self) -> Rational

pub fn reduce_with_limit(&self, max: i32) -> Result<Rational, Rational>

pub fn invert(&self) -> Rational

Examples found in repository

examples/transcode-x264.rs (line 62)

    fn new(
        ist: &format::stream::Stream,
        octx: &mut format::context::Output,
        ost_index: usize,
        x264_opts: Dictionary,
        enable_logging: bool,
    ) -> Result<Self, ffmpeg::Error> {
        let global_header = octx.format().flags().contains(format::Flags::GLOBAL_HEADER);
        let decoder = ffmpeg::codec::context::Context::from_parameters(ist.parameters())?
            .decoder()
            .video()?;
        let mut ost = octx.add_stream(encoder::find(codec::Id::H264))?;
        let mut encoder = codec::context::Context::from_parameters(ost.parameters())?
            .encoder()
            .video()?;
        encoder.set_height(decoder.height());
        encoder.set_width(decoder.width());
        encoder.set_aspect_ratio(decoder.aspect_ratio());
        encoder.set_format(decoder.format());
        encoder.set_frame_rate(decoder.frame_rate());
        encoder.set_time_base(decoder.frame_rate().unwrap().invert());
        if global_header {
            encoder.set_flags(codec::Flags::GLOBAL_HEADER);
        }

        encoder
            .open_with(x264_opts)
            .expect("error opening libx264 encoder with supplied settings");
        encoder = codec::context::Context::from_parameters(ost.parameters())?
            .encoder()
            .video()?;
        ost.set_parameters(&encoder);
        Ok(Self {
            ost_index,
            decoder,
            encoder: codec::context::Context::from_parameters(ost.parameters())?
                .encoder()
                .video()?,
            logging_enabled: enable_logging,
            frame_count: 0,
            last_log_frame_count: 0,
            starting_time: Instant::now(),
            last_log_time: Instant::now(),
        })
    }

Trait Implementations

impl Add<Rational> for Rational

type Output = Rational

The resulting type after applying the + operator.

fn add(self, other: Rational) -> Rational

Performs the + operation.

impl Clone for Rational

fn clone(&self) -> Rational

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Rational

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

Formats the value using the given formatter.

impl Display for Rational

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

Formats the value using the given formatter.

impl Div<Rational> for Rational

type Output = Rational

The resulting type after applying the / operator.

fn div(self, other: Rational) -> Rational

Performs the / operation.

impl From<(i32, i32)> for Rational

fn from((num, den): (i32, i32)) -> Rational

Converts to this type from the input type.

impl From<AVRational> for Rational

fn from(value: AVRational) -> Rational

Converts to this type from the input type.

impl From<Rational> for AVRational

fn from(value: Rational) -> AVRational

Converts to this type from the input type.

impl From<Rational> for f64

fn from(value: Rational) -> f64

Converts to this type from the input type.

impl From<Rational> for u32

fn from(value: Rational) -> u32

Converts to this type from the input type.

impl From<f64> for Rational

fn from(value: f64) -> Rational

Converts to this type from the input type.

impl Mul<Rational> for Rational

type Output = Rational

The resulting type after applying the * operator.

fn mul(self, other: Rational) -> Rational

Performs the * operation.

impl PartialEq<Rational> for Rational

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd<Rational> for Rational

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub<Rational> for Rational

type Output = Rational

The resulting type after applying the - operator.

fn sub(self, other: Rational) -> Rational

Performs the - operation.

impl Copy for Rational

impl Eq for Rational