Struct Metadata 

pub struct Metadata {
    pub orientation: Orientation,
    pub content_light_level: Option<ContentLightLevel>,
    pub exif: Option<Vec<u8>>,
}

All optional metadata passed to the encoder, threaded through [crate::EncodeConfig].

Fields

orientation: Orientation

Display orientation (irot/imir). Default Normal writes no transform.

content_light_level: Option<ContentLightLevel>

HDR content light level (clli). None writes no box.

exif: Option<Vec<u8>>

Raw EXIF/TIFF payload (the bytes after the "Exif\0\0" identifier — i.e. the TIFF header onward). None writes no EXIF item. The encoder prepends the 4-byte ItemInfo offset field required by the HEIF Exif item format.

Implementations

impl Metadata

pub fn new() -> Self

pub fn with_orientation(self, o: Orientation) -> Self

pub fn with_content_light_level(self, cll: ContentLightLevel) -> Self

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

pub fn is_empty(&self) -> bool

True when there is nothing to write (avoids emitting empty boxes/items).

Trait Implementations

impl Clone for Metadata

fn clone(&self) -> Metadata

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() -> Metadata

Returns the “default value” for a type.