86 lines
2.2 KiB
TypeScript
86 lines
2.2 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, { useEffect, useRef } from "react";
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import { Participant } from "../room/InCallView";
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import { useCallFeed } from "./useCallFeed";
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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: Participant;
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audioContext: AudioContext;
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audioDestination: AudioNode;
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}
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export function AudioForParticipant({
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item,
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audioContext,
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audioDestination,
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}: AudioForParticipantProps): JSX.Element {
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const { stream, localVolume } = useCallFeed(item.callFeed);
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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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if (!item.isLocal && audioContext) {
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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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}, [item, audioContext, audioDestination, stream, localVolume]);
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return null;
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}
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interface AudioContainerProps {
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items: Participant[];
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audioContext: AudioContext;
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audioDestination: AudioNode;
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}
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export function AudioContainer({
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items,
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...rest
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}: AudioContainerProps): JSX.Element {
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return (
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<>
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{items.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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