Struct AnalysisMetrics 

pub struct AnalysisMetrics {
    pub bass: f32,
    pub mid: f32,
    pub treb: f32,
    pub onset: f32,
    pub downbeat_confidence: f32,
    pub downbeat_locked: bool,
}

A snapshot of the analysis side of diagnostics: what the audio is doing, as against Metrics’s what the renderer is doing.

Why this is a second struct rather than six more fields on Metrics

Metrics claims, in its doc comment, to mirror the C ABI’s RlxMetrics. Growing it would either widen the C ABI or quietly make that claim false, and ADR-0052 chose neither: these values stay native-only, so the split makes “does not cross the ABI” a property of the type instead of a comment on a field that a later plan has no reason to read. It follows the standing line rather than inventing one — no analysis value has ever crossed the boundary (novelty is already marked native-API-only on the frame itself).

The named cost, from the same ADR: the foobar plugin gets no analysis diagnostics programmatically — no rlx_get_metrics counterpart, so nothing on that path can compute a lock rate — and it is the one frontend that never touches loopback capture. It does get them on screen: this overlay is core-drawn, so a host setting RLX_DEBUG_OVERLAY paints the same six rows the standalone’s F3 does (Plan 0049 close review corrected ADR-0052 on that point; see its Outcome section). If the estimator ever needs the machine-readable half on that path, RlxMetrics still leads with struct_size, so the growth is available — behind a superseding ADR.

Exactly the six values Plan 0048 Phase 6 needs to make its two judgements: whether the normalized levels ride the music, and whether the downbeat estimator locks. Nothing speculative — the *_raw twins, bpm, bar and novelty stay off until something asks.

Fields

bass: f32

Bass level, normalized against its recent peak (ADR-0049).

mid: f32

Mid level, normalized against its recent peak.

treb: f32

Treble level, normalized against its recent peak.

onset: f32

Onset envelope, normalized against its recent peak.

downbeat_confidence: f32

The downbeat estimator’s confidence in 0..1 (ADR-0050).

downbeat_locked: bool

Whether the bar position came from the estimator rather than the counter fallback. This is the value ADR-0050’s stopping condition needs: from outside the app a wrong lock and the fallback look identical.

Trait Implementations

impl Clone for AnalysisMetrics

fn clone(&self) -> AnalysisMetrics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AnalysisMetrics

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

Formats the value using the given formatter.

impl Default for AnalysisMetrics

fn default() -> AnalysisMetrics

Returns the “default value” for a type.

impl From<&AnalysisFrame> for AnalysisMetrics

fn from(frame: &AnalysisFrame) -> Self

Converts to this type from the input type.

impl PartialEq for AnalysisMetrics

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for AnalysisMetrics

impl StructuralPartialEq for AnalysisMetrics