Struct LayerInfo 

#[non_exhaustive]
pub struct LayerInfo {
    pub layer_id: u16,
    pub view_id: Option<u16>,
    pub depends_on: Vec<u16>,
}

Stream-level description of one layer of a multi-layer video stream, carried in CodecParameters::layers.

#[non_exhaustive]: build it with new and the with_* builders, read the public fields directly.

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.

layer_id: u16

The codec’s layer identifier (the value frames of this layer report in LayerIdentity::layer_id). 0 is the base layer.

view_id: Option<u16>

The view this layer codes, for multi-view content; None when the layer is not a view (spatial / quality enhancement, auxiliary pictures) or the mapping is unknown.

depends_on: Vec<u16>

Layer identifiers this layer predicts from directly (its reference layers). Empty for the base layer and for streams whose dependency structure is not described. A consumer that wants to decode this layer must also feed every layer reachable through depends_on.

Implementations

impl LayerInfo

pub fn new(layer_id: u16) -> Self

Description of layer layer_id with no view and no declared dependencies.

pub fn with_view_id(self, view_id: u16) -> Self

Builder: set the view identifier.

pub fn with_depends_on(self, layers: impl Into<Vec<u16>>) -> Self

Builder: replace the direct reference-layer list.

pub fn is_base_layer(&self) -> bool

true for the base layer (layer_id == 0).

pub fn identity(&self) -> LayerIdentity

The LayerIdentity a frame of this layer would carry (layer_id and view_id; no access-unit index).

Trait Implementations

impl Clone for LayerInfo

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 LayerInfo

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

Formats the value using the given formatter.

impl Default for LayerInfo

fn default() -> Self

Returns the “default value” for a type.

impl Eq for LayerInfo

impl Hash for LayerInfo

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for LayerInfo

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LayerInfo