Enum av_metrics::video::ChromaSampling

#[repr(C)]
pub enum ChromaSampling {
    Cs420,
    Cs422,
    Cs444,
    Cs400,
}

Chroma subsampling format

Variants

Cs420

Both vertically and horizontally subsampled.

Cs422

Horizontally subsampled.

Cs444

Not subsampled.

Cs400

Monochrome.

Implementations

impl ChromaSampling

pub const fn get_decimation(self) -> Option<(usize, usize)>

Provides the amount to right shift the luma plane dimensions to get the chroma plane dimensions. Only values 0 or 1 are ever returned. The plane dimensions must also be rounded up to accommodate odd luma plane sizes. Cs400 returns None, as there are no chroma planes.

pub const fn get_chroma_dimensions(
    self,
    luma_width: usize,
    luma_height: usize
) -> (usize, usize)

Calculates the size of a chroma plane for this sampling type, given the luma plane dimensions.

Trait Implementations

impl Clone for ChromaSampling

fn clone(&self) -> ChromaSampling

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ChromaSampling

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

Formats the value using the given formatter.

impl Default for ChromaSampling

fn default() -> ChromaSampling

Returns the “default value” for a type.

impl Display for ChromaSampling

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

Formats the value using the given formatter.

impl FromPrimitive for ChromaSampling

fn from_i64(n: i64) -> Option<ChromaSampling>

Converts an i64 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_u64(n: u64) -> Option<ChromaSampling>

Converts an u64 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_isize(n: isize) -> Option<Self>

Converts an isize to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_i8(n: i8) -> Option<Self>

Converts an i8 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_i16(n: i16) -> Option<Self>

Converts an i16 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_i32(n: i32) -> Option<Self>

Converts an i32 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_i128(n: i128) -> Option<Self>

Converts an i128 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_usize(n: usize) -> Option<Self>

Converts a usize to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_u8(n: u8) -> Option<Self>

Converts an u8 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_u16(n: u16) -> Option<Self>

Converts an u16 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_u32(n: u32) -> Option<Self>

Converts an u32 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_u128(n: u128) -> Option<Self>

Converts an u128 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_f32(n: f32) -> Option<Self>

Converts a f32 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_f64(n: f64) -> Option<Self>

Converts a f64 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

impl PartialEq<ChromaSampling> for ChromaSampling

fn eq(&self, other: &ChromaSampling) -> 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 Copy for ChromaSampling

impl Eq for ChromaSampling

impl StructuralEq for ChromaSampling

impl StructuralPartialEq for ChromaSampling