0f5dc33918
This probably should have been part of https://github.com/element-hq/element-call/pull/2984
37 lines
1.1 KiB
TypeScript
37 lines
1.1 KiB
TypeScript
/*
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Copyright 2024 New Vector Ltd.
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SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
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Please see LICENSE in the repository root for full details.
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*/
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import {
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type Observable,
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audit,
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merge,
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timer,
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filter,
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startWith,
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distinctUntilChanged,
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} from "rxjs";
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/**
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* Require 1 second of continuous speaking to become a speaker, and 60 second of
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* continuous silence to stop being considered a speaker
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*/
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export function observeSpeaker$(
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isSpeakingObservable$: Observable<boolean>,
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): Observable<boolean> {
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const distinct$ = isSpeakingObservable$.pipe(distinctUntilChanged());
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return distinct$.pipe(
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// Either change to the new value after the timer or re-emit the same value if it toggles back
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// (audit will return the latest (toggled back) value) before the timeout.
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audit((s) =>
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merge(timer(s ? 1000 : 60000), distinct$.pipe(filter((s1) => s1 !== s))),
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),
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// Filter the re-emissions (marked as: | ) that happen if we toggle quickly (<1s) from false->true->false|->..
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startWith(false),
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distinctUntilChanged(),
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);
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}
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