1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.wifi; 18 19 import android.net.wifi.WifiInfo; 20 21 /** 22 * Experimental scorer 23 */ 24 public class AggressiveConnectedScore extends ConnectedScore { 25 26 private final ScoringParams mScoringParams; 27 28 private int mFrequencyMHz = 5000; 29 private int mRssi = 0; 30 AggressiveConnectedScore(ScoringParams scoringParams, Clock clock)31 public AggressiveConnectedScore(ScoringParams scoringParams, Clock clock) { 32 super(clock); 33 mScoringParams = scoringParams; 34 } 35 36 @Override updateUsingRssi(int rssi, long millis, double standardDeviation)37 public void updateUsingRssi(int rssi, long millis, double standardDeviation) { 38 mRssi = rssi; 39 } 40 41 @Override updateUsingWifiInfo(WifiInfo wifiInfo, long millis)42 public void updateUsingWifiInfo(WifiInfo wifiInfo, long millis) { 43 mFrequencyMHz = wifiInfo.getFrequency(); 44 mRssi = wifiInfo.getRssi(); 45 } 46 47 @Override reset()48 public void reset() { 49 mFrequencyMHz = 5000; 50 } 51 52 /** 53 * Generate the Wi-Fi network score. 54 * @return the generated Wi-Fi network score. 55 */ 56 @Override generateScore()57 public int generateScore() { 58 final int transitionScore = isPrimary() ? WIFI_TRANSITION_SCORE 59 : WIFI_SECONDARY_TRANSITION_SCORE; 60 int threshRssi = mScoringParams.getSufficientRssi(mFrequencyMHz); 61 int score = (mRssi - threshRssi) + transitionScore; 62 return score; 63 } 64 } 65