Struct RmsWindow 

pub struct RmsWindow { /* private fields */ }

A moving-window RMS estimator over the most recent N samples.

Unlike AudioLevels’s per-block RMS (which resets every buffer), this gives a smooth level over a fixed time window regardless of block size — feed it samples or whole blocks and read rms. The window length in samples is window_secs · sample_rate.

use vst3_host::audio::RmsWindow;

let mut rms = RmsWindow::new(4);
for _ in 0..4 { rms.push_sample(0.5); }
assert!((rms.rms() - 0.5).abs() < 1e-6); // constant 0.5 → RMS 0.5

Implementations

impl RmsWindow

pub fn new(window_samples: usize) -> Self

Create a window holding the most recent window_samples samples (minimum 1).

pub fn from_duration(window_secs: f32, sample_rate: f64) -> Self

Create a window sized for window_secs of audio at sample_rate Hz.

The sample count is clamped: a non-finite or absurd duration/rate would otherwise saturate to usize::MAX and panic in VecDeque::with_capacity.

pub fn push_sample(&mut self, sample: f32)

Add one sample, evicting the oldest if the window is full.

pub fn push_block(&mut self, block: &[f32])

Add a whole block of samples.

pub fn rms(&self) -> f32

Current RMS over the samples in the window (0.0 when empty).

pub fn len(&self) -> usize

Number of samples currently in the window.

pub fn is_empty(&self) -> bool

Whether the window holds no samples yet.

pub fn clear(&mut self)

Drop all samples.

Trait Implementations

impl Clone for RmsWindow

fn clone(&self) -> RmsWindow

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RmsWindow

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

Formats the value using the given formatter.