Function requestFarEndCameraControl

Request control an far-end PTZ camera

// UserA
// Request control of UserB's camera.
client.requestFarEndCameraControl(userBId);

// UserB
client.on("far-end-camera-request-control", (payload) => {
  const { userId, displayName } = payload;
 // popup a confirm window, approve or decline the request
 client.approveFarEndCameraControl(userId);
});

// UserA
let isFarEndCameraApproved = false;
let capability = undefined;
client.on("far-end-camera-response-control", (payload) => {
  const { isApproved, userId, displayName } = payload;
  isFarEndCameraApproved = isApproved;
});

client.on("far-end-camera-capability-change", (payload) => {
  const { userId, ptz } = payload;
  capability = ptz;
  if (capability.pan) {
    // Turn the camera to the left.
    client.controlFarEndCamera({
      userId,
      cmd: CameraControlCmd.Left,
      range: 10,
    });
  }
});
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