Struct ImageMetadata 

pub struct ImageMetadata<'a> { /* private fields */ }

Image metadata (ICC, EXIF, XMP, tone mapping) to embed in the JXL file.

Implementations

impl<'a> ImageMetadata<'a>

pub fn new() -> Self

Create empty metadata.

pub fn with_icc_profile(self, data: &'a [u8]) -> Self

Attach an ICC color profile.

pub fn with_exif(self, data: &'a [u8]) -> Self

Attach EXIF data.

pub fn with_xmp(self, data: &'a [u8]) -> Self

Attach XMP data.

pub fn icc_profile(&self) -> Option<&[u8]>

Get the ICC color profile, if set.

pub fn exif(&self) -> Option<&[u8]>

Get the EXIF data, if set.

pub fn xmp(&self) -> Option<&[u8]>

Get the XMP data, if set.

pub fn with_intensity_target(self, nits: f32) -> Self

Set the peak display luminance in nits (cd/m²) for HDR content.

Written to the JXL codestream ToneMapping.intensity_target field. Default is 255.0 (SDR). Set to e.g. 4000.0 or 10000.0 for HDR.

pub fn with_min_nits(self, nits: f32) -> Self

Set the minimum display luminance in nits.

Written to the JXL codestream ToneMapping.min_nits field. Default is 0.0.

pub fn intensity_target(&self) -> Option<f32>

Get the intensity target, if set.

pub fn min_nits(&self) -> Option<f32>

Get the min nits, if set.

pub fn with_intrinsic_size(self, width: u32, height: u32) -> Self

Set the intrinsic display size.

When set, the image should be rendered at this (width, height) rather than the coded dimensions. Written to the JXL codestream intrinsic_size field.

pub fn intrinsic_size(&self) -> Option<(u32, u32)>

Get the intrinsic size, if set.

Trait Implementations

impl<'a> Clone for ImageMetadata<'a>

fn clone(&self) -> ImageMetadata<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for ImageMetadata<'a>

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

Formats the value using the given formatter.

impl<'a> Default for ImageMetadata<'a>

fn default() -> ImageMetadata<'a>

Returns the “default value” for a type.