1 /* 2 * Copyright (C) 2015 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.scanner; 18 19 import android.content.Context; 20 import android.net.wifi.WifiScanner; 21 import android.os.Handler; 22 import android.os.Looper; 23 import android.os.Message; 24 import android.util.Log; 25 26 import com.android.server.wifi.Clock; 27 import com.android.server.wifi.WifiMonitor; 28 import com.android.server.wifi.WifiNative; 29 30 import java.io.FileDescriptor; 31 import java.io.PrintWriter; 32 33 /** 34 * WifiScanner implementation that takes advantage of the gscan HAL API 35 * The gscan API is used to perform background scans and wificond is used for oneshot scans. 36 * @see com.android.server.wifi.scanner.WifiScannerImpl for more details on each method. 37 */ 38 public class HalWifiScannerImpl extends WifiScannerImpl implements Handler.Callback { 39 private static final String TAG = "HalWifiScannerImpl"; 40 private static final boolean DBG = false; 41 42 private final WifiNative mWifiNative; 43 private final ChannelHelper mChannelHelper; 44 private final WificondScannerImpl mWificondScannerDelegate; 45 HalWifiScannerImpl(Context context, String ifaceName, WifiNative wifiNative, WifiMonitor wifiMonitor, Looper looper, Clock clock)46 public HalWifiScannerImpl(Context context, String ifaceName, WifiNative wifiNative, 47 WifiMonitor wifiMonitor, Looper looper, Clock clock) { 48 super(ifaceName); 49 mWifiNative = wifiNative; 50 mChannelHelper = new WificondChannelHelper(wifiNative); 51 mWificondScannerDelegate = 52 new WificondScannerImpl(context, getIfaceName(), wifiNative, wifiMonitor, 53 mChannelHelper, looper, clock); 54 } 55 56 @Override handleMessage(Message msg)57 public boolean handleMessage(Message msg) { 58 Log.w(TAG, "Unknown message received: " + msg.what); 59 return true; 60 } 61 62 @Override cleanup()63 public void cleanup() { 64 mWificondScannerDelegate.cleanup(); 65 } 66 67 @Override getScanCapabilities(WifiNative.ScanCapabilities capabilities)68 public boolean getScanCapabilities(WifiNative.ScanCapabilities capabilities) { 69 return mWifiNative.getBgScanCapabilities( 70 getIfaceName(), capabilities); 71 } 72 73 @Override getChannelHelper()74 public ChannelHelper getChannelHelper() { 75 return mChannelHelper; 76 } 77 startSingleScan(WifiNative.ScanSettings settings, WifiNative.ScanEventHandler eventHandler)78 public boolean startSingleScan(WifiNative.ScanSettings settings, 79 WifiNative.ScanEventHandler eventHandler) { 80 return mWificondScannerDelegate.startSingleScan(settings, eventHandler); 81 } 82 83 @Override getLatestSingleScanResults()84 public WifiScanner.ScanData getLatestSingleScanResults() { 85 return mWificondScannerDelegate.getLatestSingleScanResults(); 86 } 87 88 @Override startBatchedScan(WifiNative.ScanSettings settings, WifiNative.ScanEventHandler eventHandler)89 public boolean startBatchedScan(WifiNative.ScanSettings settings, 90 WifiNative.ScanEventHandler eventHandler) { 91 if (settings == null || eventHandler == null) { 92 Log.w(TAG, "Invalid arguments for startBatched: settings=" + settings 93 + ",eventHandler=" + eventHandler); 94 return false; 95 } 96 return mWifiNative.startBgScan( 97 getIfaceName(), settings, eventHandler); 98 } 99 100 @Override stopBatchedScan()101 public void stopBatchedScan() { 102 mWifiNative.stopBgScan(getIfaceName()); 103 } 104 105 @Override pauseBatchedScan()106 public void pauseBatchedScan() { 107 mWifiNative.pauseBgScan(getIfaceName()); 108 } 109 110 @Override restartBatchedScan()111 public void restartBatchedScan() { 112 mWifiNative.restartBgScan(getIfaceName()); 113 } 114 115 @Override getLatestBatchedScanResults(boolean flush)116 public WifiScanner.ScanData[] getLatestBatchedScanResults(boolean flush) { 117 return mWifiNative.getBgScanResults(getIfaceName()); 118 } 119 120 @Override setHwPnoList(WifiNative.PnoSettings settings, WifiNative.PnoEventHandler eventHandler)121 public boolean setHwPnoList(WifiNative.PnoSettings settings, 122 WifiNative.PnoEventHandler eventHandler) { 123 return mWificondScannerDelegate.setHwPnoList(settings, eventHandler); 124 } 125 126 @Override resetHwPnoList()127 public boolean resetHwPnoList() { 128 return mWificondScannerDelegate.resetHwPnoList(); 129 } 130 131 @Override isHwPnoSupported(boolean isConnectedPno)132 public boolean isHwPnoSupported(boolean isConnectedPno) { 133 return mWificondScannerDelegate.isHwPnoSupported(isConnectedPno); 134 } 135 136 @Override dump(FileDescriptor fd, PrintWriter pw, String[] args)137 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 138 mWificondScannerDelegate.dump(fd, pw, args); 139 } 140 } 141