snapshot of https://github.com/jitsi/jitsi-meet.git @ fd1749dd28f4138aa80234fc7f311b19aaffa0e7 (2026-09-15)

react/features/remote-control/subscriber.ts

@@ -0,0 +1,53 @@
+import {
+    getParticipantById,
+    getVirtualScreenshareParticipantByOwnerId,
+    getVirtualScreenshareParticipantOwnerId,
+    isScreenShareParticipant
+} from '../base/participants/functions';
+import StateListenerRegistry from '../base/redux/StateListenerRegistry';
+
+import { pause, resume } from './actions';
+
+/**
+ * Listens for large video participant ID changes.
+ */
+StateListenerRegistry.register(
+    /* selector */ state => {
+        const { participantId = '' } = state['features/large-video'];
+        const { controller } = state['features/remote-control'];
+        const { controlled } = controller;
+
+        if (!controlled) {
+            return undefined;
+        }
+
+        const participant = getParticipantById(state, participantId);
+
+        if (isScreenShareParticipant(participant)) {
+            // multistream support is enabled and the user has selected the desktop sharing thumbnail.
+            const id = getVirtualScreenshareParticipantOwnerId(participantId);
+
+            return id === controlled;
+        }
+
+        const virtualParticipant = getVirtualScreenshareParticipantByOwnerId(state, participantId);
+
+        if (virtualParticipant) { // multistream is enabled and the user has selected the camera thumbnail.
+            return false;
+
+        }
+
+        return controlled === participantId;
+    },
+    /* listener */ (isControlledParticipantOnStage, { dispatch }) => {
+        if (isControlledParticipantOnStage === true) {
+            dispatch(resume());
+        } else if (isControlledParticipantOnStage === false) {
+            dispatch(pause());
+        }
+
+        // else {
+        // isControlledParticipantOnStage === undefined. Ignore!
+        // }
+    }
+);