Add other missing file

src/video-grid/AudioSink.tsx

@@ -0,0 +1,46 @@
+/*
+Copyright 2022 New Vector Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from "react";
+
+import { TileDescriptor } from "./TileDescriptor";
+import { useCallFeed } from "./useCallFeed";
+import { useMediaStream } from "./useMediaStream";
+
+interface Props {
+  tileDescriptor: TileDescriptor;
+  audioOutput: string;
+}
+
+// Renders and <audio> element on the page playing the given stream
+// to the given output.
+export const AudioSink: React.FC<Props> = ({
+  tileDescriptor,
+  audioOutput,
+}: Props) => {
+  const { audioMuted, localVolume, stream } = useCallFeed(
+    tileDescriptor.callFeed
+  );
+
+  const audioElementRef = useMediaStream(
+    stream,
+    audioOutput,
+    audioMuted,
+    localVolume
+  );
+
+  return <audio ref={audioElementRef} />;
+};