Remove dependency on matrix-react-sdk

src/video-grid/useCallFeed.js

@@ -0,0 +1,56 @@
+import { useState, useEffect } from "react";
+import { CallFeedEvent } from "matrix-js-sdk/src/webrtc/callFeed";
+
+function getCallFeedState(callFeed) {
+  return {
+    member: callFeed ? callFeed.getMember() : null,
+    isLocal: callFeed ? callFeed.isLocal() : false,
+    speaking: callFeed ? callFeed.isSpeaking() : false,
+    noVideo: callFeed
+      ? !callFeed.stream || callFeed.stream.getVideoTracks().length === 0
+      : true,
+    videoMuted: callFeed ? callFeed.isVideoMuted() : true,
+    audioMuted: callFeed ? callFeed.isAudioMuted() : true,
+    stream: callFeed ? callFeed.stream : undefined,
+    purpose: callFeed ? callFeed.purpose : undefined,
+  };
+}
+
+export function useCallFeed(callFeed) {
+  const [state, setState] = useState(() => getCallFeedState(callFeed));
+
+  useEffect(() => {
+    function onSpeaking(speaking) {
+      setState((prevState) => ({ ...prevState, speaking }));
+    }
+
+    function onMuteStateChanged(audioMuted, videoMuted) {
+      setState((prevState) => ({ ...prevState, audioMuted, videoMuted }));
+    }
+
+    function onUpdateCallFeed() {
+      setState(getCallFeedState(callFeed));
+    }
+
+    if (callFeed) {
+      callFeed.on(CallFeedEvent.Speaking, onSpeaking);
+      callFeed.on(CallFeedEvent.MuteStateChanged, onMuteStateChanged);
+      callFeed.on(CallFeedEvent.NewStream, onUpdateCallFeed);
+    }
+
+    onUpdateCallFeed();
+
+    return () => {
+      if (callFeed) {
+        callFeed.removeListener(CallFeedEvent.Speaking, onSpeaking);
+        callFeed.removeListener(
+          CallFeedEvent.MuteStateChanged,
+          onMuteStateChanged
+        );
+        callFeed.removeListener(CallFeedEvent.NewStream, onUpdateCallFeed);
+      }
+    };
+  }, [callFeed]);
+
+  return state;
+}