1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_GEOLOCATION_WIFI_DATA_H_ 6 #define CONTENT_BROWSER_GEOLOCATION_WIFI_DATA_H_ 7 8 #include <set> 9 10 #include "base/basictypes.h" 11 #include "base/strings/string16.h" 12 #include "content/common/content_export.h" 13 14 namespace content { 15 16 // Wifi data relating to a single access point. 17 struct CONTENT_EXPORT AccessPointData { 18 AccessPointData(); 19 ~AccessPointData(); 20 21 // MAC address, formatted as per MacAddressAsString16. 22 base::string16 mac_address; 23 int radio_signal_strength; // Measured in dBm 24 int channel; 25 int signal_to_noise; // Ratio in dB 26 base::string16 ssid; // Network identifier 27 }; 28 29 // This is to allow AccessPointData to be used in std::set. We order 30 // lexicographically by MAC address. 31 struct AccessPointDataLess { 32 bool operator()(const AccessPointData& data1, 33 const AccessPointData& data2) const { 34 return data1.mac_address < data2.mac_address; 35 } 36 }; 37 38 // All data for wifi. 39 struct CONTENT_EXPORT WifiData { 40 WifiData(); 41 ~WifiData(); 42 43 // Determines whether a new set of WiFi data differs significantly from this. 44 bool DiffersSignificantly(const WifiData& other) const; 45 46 // Store access points as a set, sorted by MAC address. This allows quick 47 // comparison of sets for detecting changes and for caching. 48 typedef std::set<AccessPointData, AccessPointDataLess> AccessPointDataSet; 49 AccessPointDataSet access_point_data; 50 }; 51 52 } // namespace content 53 54 #endif // CONTENT_BROWSER_GEOLOCATION_WIFI_DATA_H_ 55
