125 lines
4.1 KiB
Java
125 lines
4.1 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.wifi;
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import android.annotation.IntDef;
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import android.os.BatteryStatsManager;
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import android.util.ArrayMap;
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import android.util.Log;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.util.Map;
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import java.util.concurrent.RejectedExecutionException;
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/**
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* This class is used to track WifiState to update BatteryStats
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*/
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public class WifiStateTracker {
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private static final String TAG = "WifiStateTracker";
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@IntDef(value = {
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INVALID,
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SCAN_MODE,
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DISCONNECTED,
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CONNECTED,
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SOFT_AP,
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})
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@Retention(RetentionPolicy.SOURCE)
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public @interface WifiStateTrackerState {}
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public static final int INVALID = -1;
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public static final int SCAN_MODE = 1; // unused
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public static final int DISCONNECTED = 2;
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public static final int CONNECTED = 3;
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public static final int SOFT_AP = 4; // unused
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/**
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* String key: interface name
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* int value: last wifi state, one of the {@link WifiStateTrackerState} values.
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*/
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private final Map<String, Integer> mIfaceToWifiState = new ArrayMap<>();
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private final BatteryStatsManager mBatteryStatsManager;
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public WifiStateTracker(BatteryStatsManager batteryStatsManager) {
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mBatteryStatsManager = batteryStatsManager;
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}
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@WifiStateTrackerState
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private int mLastReportedState = INVALID;
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private void informWifiStateBatteryStats(@WifiStateTrackerState int state) {
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if (state == mLastReportedState) {
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return;
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}
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mLastReportedState = state;
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int batteryStatsState = internalToBatteryStatsWifiState(state);
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if (batteryStatsState == INVALID) {
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return;
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}
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try {
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mBatteryStatsManager.reportWifiState(batteryStatsState, null);
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} catch (RejectedExecutionException e) {
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Log.e(TAG, "Battery stats executor is being shutdown " + e.getMessage());
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}
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}
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/**
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* Reports the most active state among Wifi ifaces. e.g. Connected is more active than
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* disconnected.
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*/
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@WifiStateTrackerState
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private int getHighestPriorityState() {
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int highest = INVALID;
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for (int i : mIfaceToWifiState.values()) {
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highest = Math.max(highest, i);
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}
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return highest;
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}
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/**
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* Inform the WifiState to this tracker to translate into the
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* WifiState corresponding to BatteryStatsManager.
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* @param ifaceName iface name whose state has changed
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* @param state state corresponding to the ClientModeImpl state, one of the
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* {@link WifiStateTrackerState} values.
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*/
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public void updateState(String ifaceName, @WifiStateTrackerState int state) {
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mIfaceToWifiState.put(ifaceName, state);
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int highestPriorityState = getHighestPriorityState();
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informWifiStateBatteryStats(highestPriorityState);
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}
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private static int internalToBatteryStatsWifiState(@WifiStateTrackerState int internal) {
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switch (internal) {
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case SCAN_MODE:
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return BatteryStatsManager.WIFI_STATE_OFF_SCANNING;
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case DISCONNECTED:
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return BatteryStatsManager.WIFI_STATE_ON_DISCONNECTED;
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case CONNECTED:
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return BatteryStatsManager.WIFI_STATE_ON_CONNECTED_STA;
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case SOFT_AP:
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return BatteryStatsManager.WIFI_STATE_SOFT_AP;
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case INVALID:
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default:
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return INVALID;
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}
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}
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}
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