Enum av_metrics_decoders::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 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 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

pub 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

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

Formats the value using the given formatter.

impl Default for ChromaSampling

pub fn default() -> ChromaSampling

Returns the “default value” for a type.

impl Display for ChromaSampling

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

Formats the value using the given formatter.

impl FromPrimitive for ChromaSampling

pub 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.

pub 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

pub 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 !=.

impl Copy for ChromaSampling

impl StructuralPartialEq for ChromaSampling