Struct SDL_ChromaLocation 

#[repr(transparent)]
pub struct SDL_ChromaLocation(pub c_uint);

Colorspace chroma sample location.

Availability

This enum is available since SDL 3.2.0.

Known values (sdl3-sys)

Associated constant	Global constant	Description
NONE	SDL_CHROMA_LOCATION_NONE	RGB, no chroma sampling
LEFT	SDL_CHROMA_LOCATION_LEFT	In MPEG-2, MPEG-4, and AVC, Cb and Cr are taken on midpoint of the left-edge of the 2x2 square. In other words, they have the same horizontal location as the top-left pixel, but is shifted one-half pixel down vertically.
CENTER	SDL_CHROMA_LOCATION_CENTER	In JPEG/JFIF, H.261, and MPEG-1, Cb and Cr are taken at the center of the 2x2 square. In other words, they are offset one-half pixel to the right and one-half pixel down compared to the top-left pixel.
TOPLEFT	SDL_CHROMA_LOCATION_TOPLEFT	In HEVC for BT.2020 and BT.2100 content (in particular on Blu-rays), Cb and Cr are sampled at the same location as the group’s top-left Y pixel (“co-sited”, “co-located”).

Tuple Fields

0: c_uint

Implementations

impl SDL_ChromaLocation

pub const NONE: Self

RGB, no chroma sampling

pub const LEFT: Self

In MPEG-2, MPEG-4, and AVC, Cb and Cr are taken on midpoint of the left-edge of the 2x2 square. In other words, they have the same horizontal location as the top-left pixel, but is shifted one-half pixel down vertically.

pub const CENTER: Self

In JPEG/JFIF, H.261, and MPEG-1, Cb and Cr are taken at the center of the 2x2 square. In other words, they are offset one-half pixel to the right and one-half pixel down compared to the top-left pixel.

pub const TOPLEFT: Self

In HEVC for BT.2020 and BT.2100 content (in particular on Blu-rays), Cb and Cr are sampled at the same location as the group’s top-left Y pixel (“co-sited”, “co-located”).

Trait Implementations

impl Clone for SDL_ChromaLocation

fn clone(&self) -> SDL_ChromaLocation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SDL_ChromaLocation

Available on crate feature debug-impls only.

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

Formats the value using the given formatter.

impl Default for SDL_ChromaLocation

fn default() -> SDL_ChromaLocation

Returns the “default value” for a type.

impl From<SDL_ChromaLocation> for c_uint

fn from(value: SDL_ChromaLocation) -> Self

Converts to this type from the input type.

impl GroupMetadata for SDL_ChromaLocation

Available on crate feature metadata only.

const GROUP_METADATA: &'static Group

Metadata for this group

impl Hash for SDL_ChromaLocation

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for SDL_ChromaLocation

fn cmp(&self, other: &SDL_ChromaLocation) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq<SDL_ChromaLocation> for c_uint

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialEq<u32> for SDL_ChromaLocation

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialEq for SDL_ChromaLocation

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for SDL_ChromaLocation

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Copy for SDL_ChromaLocation

impl Eq for SDL_ChromaLocation

impl StructuralPartialEq for SDL_ChromaLocation