Struct ContainerItem 

#[non_exhaustive]
pub struct ContainerItem {
    pub semantic: ItemSemantic,
    pub mime: String,
    pub length: Option<usize>,
    pub padding: Option<usize>,
}

An item in a GContainer directory.

Parsed from Container:Directory → rdf:Seq → rdf:li entries in XMP. Each item describes a secondary image appended after the primary JPEG’s EOI.

The padding field is from Google’s Dynamic Depth Format extension and not present in canonical Ultra HDR.

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.

semantic: ItemSemantic

Semantic role.

mime: String

MIME type (e.g. "image/jpeg", "image/png").

length: Option<usize>

Byte length of this item’s payload. None for the primary image (its size is determined by its own EOI).

padding: Option<usize>

Padding bytes before this item. Used by some Dynamic Depth Format implementations.

Implementations

impl ContainerItem

pub fn primary(mime: impl Into<String>) -> Self

Create a primary image item.

pub fn secondary( semantic: ItemSemantic, mime: impl Into<String>, length: usize, ) -> Self

Create a secondary item with a known length.

Trait Implementations

impl Clone for ContainerItem

fn clone(&self) -> ContainerItem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContainerItem

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

Formats the value using the given formatter.

impl Eq for ContainerItem

impl PartialEq for ContainerItem

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ContainerItem