bandwidth savings configs

webui/src/hooks/useDriverVideoModePolicy.js

@@ -9,6 +9,9 @@ export function useDriverVideoModePolicy(roverId) {
   const turnQueues = useSessionSelector((state) => state.session?.turnQueues ?? {});
   const socketId = useSessionSelector((state) => state.session?.socketId || null);
   const activeDrivers = useSessionSelector((state) => state.session?.activeDrivers ?? {});
+  const nonTurnVideoPolicy = useSessionSelector(
+    (state) => state.session?.bandwidthSavings?.nonTurnVideo || 'snapshots',
+  );
   const isTurnsMode = mode === 'turns';
   /*
     This policy only switches preview/full video around a multi-second turn
@@ -43,7 +46,13 @@ export function useDriverVideoModePolicy(roverId) {
     });
     return unique.size;
   }, [users]);
-  const shouldUsePreviewByLoad = isTurnsMode && totalDrivers > totalRovers;
+  /*
+    The server sends the bandwidth policy because the same rule is enforced in
+    video authorization. The hook only mirrors that policy so the UI avoids
+    requesting live video when snapshots are the intended non-turn experience.
+  */
+  const shouldUsePreviewByLoad =
+    nonTurnVideoPolicy === 'snapshots' && isTurnsMode && totalDrivers > totalRovers;
   const isPreSwitchWindow =
     isTurnsMode && isNextDriver && msUntilTurn != null && msUntilTurn <= 5000 && msUntilTurn > 0;
   const showNotTurnNotice = isTurnsMode && !isActiveDriver;

webui/src/hooks/useSpectatorMode.js

@@ -6,6 +6,7 @@ import { useSession } from '../context/SessionContext.jsx';
 export function useSpectatorMode() {
   const { session, setRole, subscribeAll, connected } = useSession();
   const [ready, setReady] = useState(false);
+  const canUseSpectatorAccess = session?.bandwidthSavings?.canUseExternalSpectatorAccess !== false;
 
   useEffect(() => {
     let cancelled = false;
@@ -14,6 +15,15 @@ export function useSpectatorMode() {
         setReady(false);
         return;
       }
+      if (!canUseSpectatorAccess) {
+        /*
+          The server will reject the role change too, but stopping here prevents
+          a blocked external spectator from retrying on every session sync while
+          the page is intentionally waiting for an admin grant or config change.
+        */
+        setReady(false);
+        return;
+      }
       try {
         if (session?.role !== 'spectator') {
           await setRole('spectator');
@@ -33,7 +43,7 @@ export function useSpectatorMode() {
     return () => {
       cancelled = true;
     };
-  }, [connected, session?.mode, session?.role, setRole, subscribeAll]);
+  }, [canUseSpectatorAccess, connected, session?.mode, session?.role, setRole, subscribeAll]);
 
   return ready;
 }