Constructors
Constructor	Description
`SampleRingBuffer(Integer windowSec)`

Modifier and Type	Method	Description
`final Unit`	`append(BiosignalSample sample)`	Append a sample and evict anything outside the window.
`final List<Pair<Long, Double>>`	`asPairs()`	Returns (timestampMs, bpm) pairs matching the format `computeMetrics()` expects.
`final List<BiosignalSample>`	`getAll()`	Returns all samples currently in the buffer (for `biosignal_frame`).
`final Integer`	`count()`
`final Boolean`	`isEmpty()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- SampleRingBuffer
```
SampleRingBuffer(Integer windowSec)
```

@Synchronized() final Unit append(BiosignalSample sample)

Append a sample and evict anything outside the window.

asPairs
```
@Synchronized() final List<Pair<Long, Double>> asPairs()
```
Returns (timestampMs, bpm) pairs matching the format computeMetrics() expects.

getAll
```
@Synchronized() final List<BiosignalSample> getAll()
```
Returns all samples currently in the buffer (for biosignal_frame).

Class SampleRingBuffer