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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/browser/geolocation/wifi_data_provider_common.h" | 5 #include "chrome/browser/geolocation/wifi_data_provider_common.h" |
6 | 6 |
7 #include "base/utf_string_conversions.h" | 7 #include "base/utf_string_conversions.h" |
8 | 8 |
9 string16 MacAddressAsString16(const uint8 mac_as_int[6]) { | 9 string16 MacAddressAsString16(const uint8 mac_as_int[6]) { |
10 // mac_as_int is big-endian. Write in byte chunks. | 10 // mac_as_int is big-endian. Write in byte chunks. |
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35 } | 35 } |
36 | 36 |
37 void WifiDataProviderCommon::StopDataProvider() { | 37 void WifiDataProviderCommon::StopDataProvider() { |
38 DCHECK(CalledOnClientThread()); | 38 DCHECK(CalledOnClientThread()); |
39 Stop(); | 39 Stop(); |
40 } | 40 } |
41 | 41 |
42 bool WifiDataProviderCommon::GetData(WifiData *data) { | 42 bool WifiDataProviderCommon::GetData(WifiData *data) { |
43 DCHECK(CalledOnClientThread()); | 43 DCHECK(CalledOnClientThread()); |
44 DCHECK(data); | 44 DCHECK(data); |
45 AutoLock lock(data_mutex_); | 45 base::AutoLock lock(data_mutex_); |
46 *data = wifi_data_; | 46 *data = wifi_data_; |
47 // If we've successfully completed a scan, indicate that we have all of the | 47 // If we've successfully completed a scan, indicate that we have all of the |
48 // data we can get. | 48 // data we can get. |
49 return is_first_scan_complete_; | 49 return is_first_scan_complete_; |
50 } | 50 } |
51 | 51 |
52 // Thread implementation | 52 // Thread implementation |
53 void WifiDataProviderCommon::Init() { | 53 void WifiDataProviderCommon::Init() { |
54 DCHECK(wlan_api_ == NULL); | 54 DCHECK(wlan_api_ == NULL); |
55 wlan_api_.reset(NewWlanApi()); | 55 wlan_api_.reset(NewWlanApi()); |
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74 polling_policy_.reset(); | 74 polling_policy_.reset(); |
75 } | 75 } |
76 | 76 |
77 void WifiDataProviderCommon::DoWifiScanTask() { | 77 void WifiDataProviderCommon::DoWifiScanTask() { |
78 bool update_available = false; | 78 bool update_available = false; |
79 WifiData new_data; | 79 WifiData new_data; |
80 if (!wlan_api_->GetAccessPointData(&new_data.access_point_data)) { | 80 if (!wlan_api_->GetAccessPointData(&new_data.access_point_data)) { |
81 ScheduleNextScan(polling_policy_->NoWifiInterval()); | 81 ScheduleNextScan(polling_policy_->NoWifiInterval()); |
82 } else { | 82 } else { |
83 { | 83 { |
84 AutoLock lock(data_mutex_); | 84 base::AutoLock lock(data_mutex_); |
85 update_available = wifi_data_.DiffersSignificantly(new_data); | 85 update_available = wifi_data_.DiffersSignificantly(new_data); |
86 wifi_data_ = new_data; | 86 wifi_data_ = new_data; |
87 } | 87 } |
88 polling_policy_->UpdatePollingInterval(update_available); | 88 polling_policy_->UpdatePollingInterval(update_available); |
89 ScheduleNextScan(polling_policy_->PollingInterval()); | 89 ScheduleNextScan(polling_policy_->PollingInterval()); |
90 } | 90 } |
91 if (update_available || !is_first_scan_complete_) { | 91 if (update_available || !is_first_scan_complete_) { |
92 is_first_scan_complete_ = true; | 92 is_first_scan_complete_ = true; |
93 NotifyListeners(); | 93 NotifyListeners(); |
94 } | 94 } |
95 } | 95 } |
96 | 96 |
97 void WifiDataProviderCommon::ScheduleNextScan(int interval) { | 97 void WifiDataProviderCommon::ScheduleNextScan(int interval) { |
98 message_loop()->PostDelayedTask( | 98 message_loop()->PostDelayedTask( |
99 FROM_HERE, | 99 FROM_HERE, |
100 task_factory_.NewRunnableMethod(&WifiDataProviderCommon::DoWifiScanTask), | 100 task_factory_.NewRunnableMethod(&WifiDataProviderCommon::DoWifiScanTask), |
101 interval); | 101 interval); |
102 } | 102 } |
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