78 lines
2.0 KiB
TypeScript
78 lines
2.0 KiB
TypeScript
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/*
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Copyright 2023 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { Dispatch, SetStateAction, useMemo } from "react";
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import { MediaDevice, useMediaDevices } from "../livekit/MediaDevicesContext";
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import { useReactiveState } from "../useReactiveState";
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/**
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* If there already is this many participants in the call, we automatically mute
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* the user
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*/
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const MUTE_PARTICIPANT_COUNT = 8;
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interface DeviceAvailable {
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enabled: boolean;
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setEnabled: Dispatch<SetStateAction<boolean>>;
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}
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interface DeviceUnavailable {
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enabled: false;
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setEnabled: null;
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}
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const deviceUnavailable: DeviceUnavailable = {
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enabled: false,
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setEnabled: null,
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};
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type MuteState = DeviceAvailable | DeviceUnavailable;
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export interface MuteStates {
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audio: MuteState;
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video: MuteState;
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}
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function useMuteState(
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device: MediaDevice,
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enabledByDefault: () => boolean
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): MuteState {
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const [enabled, setEnabled] = useReactiveState<boolean>(
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(prev) => device.available.length > 0 && (prev ?? enabledByDefault()),
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[device]
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);
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return useMemo(
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() =>
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device.available.length === 0
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? deviceUnavailable
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: { enabled, setEnabled },
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[device, enabled, setEnabled]
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);
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}
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export function useMuteStates(participantCount: number): MuteStates {
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const devices = useMediaDevices();
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const audio = useMuteState(
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devices.audioInput,
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() => participantCount <= MUTE_PARTICIPANT_COUNT
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);
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const video = useMuteState(devices.videoInput, () => true);
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return useMemo(() => ({ audio, video }), [audio, video]);
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}
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