Struct AnalyticsMeta 

pub struct AnalyticsMeta {
    pub nodes: Vec<AnalyticsNode>,
    pub relations: Vec<Relation>,
    pub class_names: Option<Arc<[Box<str>]>>,
}

The per-frame analytics relation graph (the GstAnalyticsRelationMeta analog): typed detection / classification / tracking nodes plus directed relations between them, so downstream elements (overlay, recorder, alarm) read results by node kind and traversal instead of decoding raw tensors.

Fields

nodes: Vec<AnalyticsNode>

relations: Vec<Relation>

class_names: Option<Arc<[Box<str>]>>

Class names indexed by a node’s label, so a consumer can show “person” rather than 12. Shared rather than stored per node: the names repeat on every detection of every frame, and a node stays Copy. None means the producer published no table.

Implementations

impl AnalyticsMeta

pub fn new() -> Self

pub fn set_class_names<I, S>(&mut self, names: I)

where I: IntoIterator<Item = S>, S: Into<Box<str>>,

Set the class-name table, indexed by label id.

pub fn class_name(&self, label: u32) -> Option<&str>

The name for a label id. None with no table, or for an id past its end: that means the table and the producer disagree, and showing a neighbour’s name would be worse than showing none.

pub fn push(&mut self, node: AnalyticsNode) -> usize

Append a node, returning its index (used to wire relations).

pub fn add_detection(&mut self, detection: ObjectDetection) -> usize

Append a detection node, returning its index.

pub fn relate(&mut self, from: usize, to: usize, kind: RelationKind)

Wire a directed relation between two node indices.

pub fn detections(&self) -> impl Iterator<Item = &ObjectDetection>

Iterate the detection nodes.

pub fn segmentations(&self) -> impl Iterator<Item = &Segmentation>

Iterate the instance-segmentation nodes.

pub fn rois(&self) -> impl Iterator<Item = &Roi>

Iterate the region-of-interest nodes.

Trait Implementations

impl Clone for AnalyticsMeta

fn clone(&self) -> AnalyticsMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AnalyticsMeta

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

Formats the value using the given formatter.

impl Default for AnalyticsMeta

fn default() -> AnalyticsMeta

Returns the “default value” for a type.

impl FrameMeta for AnalyticsMeta

fn propagate(&self, transform: Transform) -> Propagation

Normalized coordinates survive a scale / crop / copy unchanged; a re-encode to a compressed codec discards pixel-derived analytics.

fn as_any(&self) -> &dyn Any

fn as_any_mut(&mut self) -> &mut dyn Any

fn clone_box(&self) -> Box<dyn FrameMeta>

A boxed deep copy of this meta, the GstMeta copy_func analog. Backs the copy-on-write of a shared meta when a tee branch mutates it (see FrameMetaSet::get_mut); each FrameMeta impl is its own concrete type, so the duplication can only be expressed on the trait.

impl PartialEq for AnalyticsMeta

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for AnalyticsMeta