David Baker
1ea9432769
This should help give more context on what's going wrong in splitbrain scenarios. If users leave calls uncleanly, their tile will remain in until their member event times out, which will be an hour from when they joined the call. See https://github.com/vector-im/element-call/issues/639. Part of https://github.com/vector-im/element-call/issues/616
97 lines
2.6 KiB
TypeScript
97 lines
2.6 KiB
TypeScript
/*
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Copyright 2022 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 React, { FC, useEffect, useRef } from "react";
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import { TileDescriptor } from "../room/InCallView";
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import { useCallFeed } from "./useCallFeed";
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import { useMediaStreamTrackCount } from "./useMediaStream";
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// XXX: These in fact do not render anything but to my knowledge this is the
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// only way to a hook on an array
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interface AudioForParticipantProps {
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item: TileDescriptor;
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audioContext: AudioContext;
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audioDestination: AudioNode;
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}
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export const AudioForParticipant: FC<AudioForParticipantProps> = ({
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item,
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audioContext,
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audioDestination,
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}) => {
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const { stream, localVolume } = useCallFeed(item.callFeed);
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const [audioTrackCount] = useMediaStreamTrackCount(stream);
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const gainNodeRef = useRef<GainNode>();
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const sourceRef = useRef<MediaStreamAudioSourceNode>();
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useEffect(() => {
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// We don't compare the audioMuted flag of useCallFeed here, since unmuting
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// depends on to-device messages which may lag behind the audio actually
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// starting to flow over the network
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if (!item.isLocal && audioContext && audioTrackCount > 0) {
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if (!gainNodeRef.current) {
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gainNodeRef.current = new GainNode(audioContext, {
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gain: localVolume,
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});
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}
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if (!sourceRef.current) {
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sourceRef.current = audioContext.createMediaStreamSource(stream);
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}
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const source = sourceRef.current;
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const gainNode = gainNodeRef.current;
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gainNode.gain.value = localVolume;
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source.connect(gainNode).connect(audioDestination);
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return () => {
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source.disconnect();
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gainNode.disconnect();
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};
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}
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}, [
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item,
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audioContext,
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audioDestination,
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stream,
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localVolume,
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audioTrackCount,
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]);
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return null;
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};
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interface AudioContainerProps {
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items: TileDescriptor[];
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audioContext: AudioContext;
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audioDestination: AudioNode;
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}
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export const AudioContainer: FC<AudioContainerProps> = ({ items, ...rest }) => {
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return (
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<>
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{items
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.filter((item) => !item.isLocal)
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.map((item) => (
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<AudioForParticipant key={item.id} item={item} {...rest} />
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))}
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</>
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);
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};
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