Enum jpeg_encoder::SamplingFactor

#[repr(u8)]
pub enum SamplingFactor {
    F_1_1,
    F_2_1,
    F_1_2,
    F_2_2,
    F_4_1,
    F_4_2,
    F_1_4,
    F_2_4,
    R_4_4_4,
    R_4_4_0,
    R_4_4_1,
    R_4_2_2,
    R_4_2_0,
    R_4_2_1,
    R_4_1_1,
    R_4_1_0,
}

Sampling factors for chroma subsampling

Warning

Sampling factor of 4 are not supported by all decoders or applications

Variants

F_1_1

F_2_1

F_1_2

F_2_2

F_4_1

F_4_2

F_1_4

F_2_4

R_4_4_4

Alias for F_1_1

R_4_4_0

Alias for F_1_2

R_4_4_1

Alias for F_1_4

R_4_2_2

Alias for F_2_1

R_4_2_0

Alias for F_2_2

R_4_2_1

Alias for F_2_4

R_4_1_1

Alias for F_4_1

R_4_1_0

Alias for F_4_2

Implementations

impl SamplingFactor

pub fn from_factors(horizontal: u8, vertical: u8) -> Option<SamplingFactor>

Get variant for supplied factors or None if not supported

Trait Implementations

impl Clone for SamplingFactor

fn clone(&self) -> SamplingFactor

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SamplingFactor

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

Formats the value using the given formatter.

impl PartialEq<SamplingFactor> for SamplingFactor

fn eq(&self, other: &SamplingFactor) -> 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 SamplingFactor

impl Eq for SamplingFactor

impl StructuralEq for SamplingFactor

impl StructuralPartialEq for SamplingFactor