Struct SampleAspectRatio 

pub struct SampleAspectRatio {
    pub num: u32,
    pub den: u32,
}

Reduced pixel-width to pixel-height ratio.

Fields

num: u32

Ratio numerator.

den: u32

Ratio denominator, never zero.

Implementations

impl SampleAspectRatio

pub fn new(num: u64, den: u64) -> Option<Self>

The ratio num:den in lowest terms, or None for a ratio with a zero term, which declares nothing (FFmpeg writes an unknown ratio as 0/1) or does not fit.

pub fn of_display(visible: (u32, u32), displayed: (u32, u32)) -> Option<Self>

The ratio of the pixels of a visible picture shown at displayed size (width, height), as a WebCodecs frame’s display size says it.

A display size is the stored size with one side stretched by the ratio and rounded to whole pixels, so it cannot say the ratio exactly (128x96 of 4:3 pixels shows 171x96, not 170 2/3). The ratio is the simplest fraction that rounds to that size, which is the declared one wherever a declared ratio’s terms are small (4:3, 64:45, 10:11), and otherwise within half a displayed pixel of the size.

pub fn square_pixel_size(self, width: u32, height: u32) -> (u32, u32)

The size a stored width x height picture of these pixels is shown at in square pixels, as a browser demuxer reports it: the side the pixels are longer along stretched, rounded half up.

Trait Implementations

impl Clone for SampleAspectRatio

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SampleAspectRatio

impl Debug for SampleAspectRatio

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

Formats the value using the given formatter.

impl Default for SampleAspectRatio

fn default() -> Self

Returns the “default value” for a type.

impl Eq for SampleAspectRatio

impl PartialEq for SampleAspectRatio

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SampleAspectRatio