Enum turbojpeg::PixelFormat

#[repr(i32)]
pub enum PixelFormat {
    RGB = 0,
    BGR = 1,
    RGBX = 2,
    BGRX = 3,
    XBGR = 4,
    XRGB = 5,
    GRAY = 6,
    RGBA = 7,
    BGRA = 8,
    ABGR = 9,
    ARGB = 10,
    CMYK = 11,
}

Pixel format determines the layout of pixels in memory.

Variants

RGB = 0

RGB pixel format.

The red, green, and blue components in the image are stored in 3-byte pixels in the order R, G, B from lowest to highest byte address within each pixel.

BGR = 1

BGR pixel format.

The red, green, and blue components in the image are stored in 3-byte pixels in the order B, G, R from lowest to highest byte address within each pixel.

RGBX = 2

RGBX pixel format.

The red, green, and blue components in the image are stored in 4-byte pixels in the order R, G, B from lowest to highest byte address within each pixel. The X component is ignored when compressing and undefined when decompressing.

BGRX = 3

BGRX pixel format.

The red, green, and blue components in the image are stored in 4-byte pixels in the order B, G, R from lowest to highest byte address within each pixel. The X component is ignored when compressing and undefined when decompressing.

XBGR = 4

XBGR pixel format.

The red, green, and blue components in the image are stored in 4-byte pixels in the order R, G, B from highest to lowest byte address within each pixel. The X component is ignored when compressing and undefined when decompressing.

XRGB = 5

XRGB pixel format.

The red, green, and blue components in the image are stored in 4-byte pixels in the order B, G, R from highest to lowest byte address within each pixel. The X component is ignored when compressing and undefined when decompressing.

GRAY = 6

Grayscale pixel format.

Each 1-byte pixel represents a luminance (brightness) level from 0 to 255.

RGBA = 7

RGBA pixel format.

This is the same as PixelFormat::RGBX, except that when decompressing, the X component is guaranteed to be 0xFF, which can be interpreted as an opaque alpha channel.

BGRA = 8

BGRA pixel format.

This is the same as PixelFormat::BGRX, except that when decompressing, the X component is guaranteed to be 0xFF, which can be interpreted as an opaque alpha channel.

ABGR = 9

ABGR pixel format.

This is the same as PixelFormat::XBGR, except that when decompressing, the X component is guaranteed to be 0xFF, which can be interpreted as an opaque alpha channel.

ARGB = 10

ARGB pixel format.

This is the same as PixelFormat::ARGB, except that when decompressing, the X component is guaranteed to be 0xFF, which can be interpreted as an opaque alpha channel.

CMYK = 11

CMYK pixel format.

Unlike RGB, which is an additive color model used primarily for display, CMYK (Cyan/Magenta/Yellow/Key) is a subtractive color model used primarily for printing. In the CMYK color model, the value of each color component typically corresponds to an amount of cyan, magenta, yellow, or black ink that is applied to a white background. In order to convert between CMYK and RGB, it is necessary to use a color management system (CMS). A CMS will attempt to map colors within the printer’s gamut to perceptually similar colors in the display’s gamut and vice versa, but the mapping is typically not 1:1 or reversible, nor can it be defined with a simple formula. Thus, such a conversion is out of scope for a codec library. However, the TurboJPEG API allows for compressing CMYK pixels into a YCCK JPEG image (see TJCS_YCCK) and decompressing YCCK JPEG images into CMYK pixels.

Implementations

impl PixelFormat

pub fn size(&self) -> usize

The size of a pixel in bytes.

Trait Implementations

impl Clone for PixelFormat

fn clone(&self) -> PixelFormat

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PixelFormat

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

Formats the value using the given formatter.

impl Hash for PixelFormat

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 PixelFormat

fn cmp(&self, other: &PixelFormat) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for PixelFormat

fn eq(&self, other: &PixelFormat) -> 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 PartialOrd for PixelFormat

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Copy for PixelFormat

impl Eq for PixelFormat

impl StructuralPartialEq for PixelFormat