Struct Metadata 

#[non_exhaustive]
pub struct Metadata {
    pub icc: Option<Vec<u8>>,
    pub exif: Option<Vec<u8>>,
    pub xmp: Option<Vec<u8>>,
    pub gamma: Option<f32>,
}

Embedded metadata of a picture, each as the raw bytes a consumer hands to its own parser.

• icc — the ICC profile of an ICC colr (rICC / prof).
• exif — the Exif payload from the TIFF header on (the HEIF A.2.1 exif_tiff_header_offset word and any bytes before the TIFF header are stripped on decode and re-written on encode).
• xmp — the XMP packet (application/rdf+xml mime item).
• gamma — AVIF carries no gamma value; always None on decode, ignored on encode.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

icc: Option<Vec<u8>>

exif: Option<Vec<u8>>

xmp: Option<Vec<u8>>

gamma: Option<f32>

Implementations

impl Metadata

pub fn new( icc: Option<Vec<u8>>, exif: Option<Vec<u8>>, xmp: Option<Vec<u8>>, gamma: Option<f32>, ) -> Self

Every field as a positional argument, in declaration order.

pub fn with_icc(self, icc: Option<Vec<u8>>) -> Self

Setter: replace icc.

pub fn with_exif(self, exif: Option<Vec<u8>>) -> Self

Setter: replace exif.

pub fn with_xmp(self, xmp: Option<Vec<u8>>) -> Self

Setter: replace xmp.

pub fn with_gamma(self, gamma: Option<f32>) -> Self

Setter: replace gamma.

pub fn is_empty(&self) -> bool

true when nothing is embedded.

Trait Implementations

impl Clone for Metadata

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Metadata

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

Formats the value using the given formatter.

impl Default for Metadata

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Metadata

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Metadata