Enum TechnicalChunk 

pub enum TechnicalChunk {
    Gamma,
    Srgb,
    Chromaticities,
    PhysicalDimensions,
    IccProfile,
    SignificantBits,
}

A chunk that describes how to read the samples, and nothing else.

The whitelist as a closed type: a chunk that is not one of these has no representation here, so no code path can copy one by accident.

Variants

Gamma

gAMA — the display gamma the samples were encoded against.

Srgb

sRGB — a declaration that the samples are sRGB, and with what intent.

Chromaticities

cHRM — the chromaticities of the primaries and of the white point.

PhysicalDimensions

pHYs — the physical size of a pixel.

IccProfile

iCCP — an embedded ICC colour profile.

The one whitelisted chunk that can be large, and the one whose contents are not a handful of integers. It is still a description of colour: a profile identifies a device class or a working space, not an owner.

SignificantBits

sBIT — how many bits of each sample the original actually used.

Copied verbatim like the rest. Worth knowing that a container declaring fewer significant bits than its samples carry is a poor container for this purpose, because the payload lives in exactly the bits such a chunk claims are meaningless.

Implementations

impl TechnicalChunk

pub fn type_code(self) -> [u8; 4]

The four type bytes this chunk is written with.

pub fn name(self) -> &'static str

The chunk’s name, for a report a person reads.

Trait Implementations

impl Clone for TechnicalChunk

fn clone(&self) -> TechnicalChunk

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TechnicalChunk

impl Debug for TechnicalChunk

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

Formats the value using the given formatter.

impl Eq for TechnicalChunk

impl PartialEq for TechnicalChunk

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for TechnicalChunk