Enum JxlColorProfile 

pub enum JxlColorProfile {
    Icc(Vec<u8>),
    Simple(JxlColorEncoding),
}

Variants

Icc(Vec<u8>)

Simple(JxlColorEncoding)

Implementations

impl JxlColorProfile

pub fn as_icc(&self) -> Cow<'_, Vec<u8>>

Returns the ICC profile, panicking if unavailable.

Panics

Panics if the color encoding cannot generate an ICC profile. Consider using try_as_icc for fallible conversion.

pub fn try_as_icc(&self) -> Option<Cow<'_, Vec<u8>>>

Attempts to get an ICC profile, returning None if unavailable.

Returns None for color encodings that cannot generate ICC profiles.

pub fn same_color_encoding(&self, other: &Self) -> bool

Returns true if both profiles represent the same color encoding.

Two profiles are the same if they are both simple color encodings with matching color space (primaries, white point) and transfer function, or if they are both ICC profiles with identical bytes.

pub fn transfer_function(&self) -> Option<&JxlTransferFunction>

Returns the transfer function if this is a simple color profile. Returns None for ICC profiles or XYB.

pub fn can_output_to(&self) -> bool

Returns true if the decoder can output to this color profile without a CMS.

This is the equivalent of libjxl’s CanOutputToColorEncoding. Output is possible when the profile is a simple encoding (not ICC) with a natively-supported transfer function. For grayscale, the white point must be D65.

pub fn with_linear_tf(&self) -> Option<Self>

Returns a copy of this profile with linear transfer function. For ICC profiles, returns None since we can’t modify embedded ICC profiles. This is used to create the CMS input profile for XYB images where XybStage outputs linear data.

pub fn channels(&self) -> usize

Returns the number of color channels (1 for grayscale, 3 for RGB, 4 for CMYK).

For ICC profiles, this parses the profile header to determine the color space. Falls back to 3 (RGB) if the ICC profile cannot be parsed.

pub fn is_cmyk(&self) -> bool

Returns true if this profile is for a CMYK color space.

For ICC profiles, this parses the profile header to check the color space. Simple color encodings are never CMYK.

Trait Implementations

impl Clone for JxlColorProfile

fn clone(&self) -> JxlColorProfile

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JxlColorProfile

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

Formats the value using the given formatter.

impl Display for JxlColorProfile

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

Formats the value using the given formatter.

impl PartialEq for JxlColorProfile

fn eq(&self, other: &JxlColorProfile) -> 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 StructuralPartialEq for JxlColorProfile