Intelligent agent status

// Register a callback for a call engine.
mARTCAICallEngine.setEngineCallback(mCallEngineCallbackWrapper); 

// Handle callback events.
ARTCAICallEngine.IARTCAICallEngineCallback mCallEngineCallbackWrapper = new ARTCAICallEngine.IARTCAICallEngineCallback() {
    @Override
    public void onAICallEngineRobotStateChanged(ARTCAICallEngine.ARTCAICallRobotState oldRobotState, ARTCAICallEngine.ARTCAICallRobotState newRobotState) {
        // Use newRobotState to update the status on the UI.
    }

    @Override
    public void onVoiceVolumeChanged(String uid, int volume) {
        // If the agent is in the Listening state, the volume bar of the user is displayed.
    }
}

// Register a callback for a call engine.
self.engine.delegate = self

func onAgentStateChanged(state: ARTCAICallAgentState) {
    // Use state to update the status on the UI when the agent status changes.
}

func onVoiceVolumeChanged(uid: String, volume: Int32) {
    // If the agent is in the Listening state, the volume bar of the user is displayed.
}

engine.on('agentStateChange', (state) => {
  // Use state to update the status on the UI when the agent status changes.
  console.log('AICallAgentStateChange to:', state);
});

engine.on('speakingVolumeChanged', (userId, volume) => {
  // The speaking volume of the agent.
  // If the userId parameter is an empty string, the volume is the volume of the current user.
  console.log('AICallSpeakingVolumeChanged', volume);
});