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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 package org.chromium.device.bluetooth; | 5 package org.chromium.device.bluetooth; |
6 | 6 |
7 import android.Manifest; | 7 import android.Manifest; |
8 import android.annotation.TargetApi; | 8 import android.annotation.TargetApi; |
9 import android.bluetooth.BluetoothAdapter; | 9 import android.bluetooth.BluetoothAdapter; |
10 import android.bluetooth.le.ScanSettings; | 10 import android.bluetooth.le.ScanSettings; |
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104 private boolean isPresent() { | 104 private boolean isPresent() { |
105 return mAdapter != null; | 105 return mAdapter != null; |
106 } | 106 } |
107 | 107 |
108 // Implements BluetoothAdapterAndroid::IsPowered. | 108 // Implements BluetoothAdapterAndroid::IsPowered. |
109 @CalledByNative | 109 @CalledByNative |
110 private boolean isPowered() { | 110 private boolean isPowered() { |
111 return isPresent() && mAdapter.isEnabled(); | 111 return isPresent() && mAdapter.isEnabled(); |
112 } | 112 } |
113 | 113 |
| 114 // Implements BluetoothAdapterAndroid::SetPowered. |
| 115 @CalledByNative |
| 116 private boolean setPowered(boolean powered) { |
| 117 if (powered) { |
| 118 return isPresent() && mAdapter.enable(); |
| 119 } else { |
| 120 return isPresent() && mAdapter.disable(); |
| 121 } |
| 122 } |
| 123 |
114 // Implements BluetoothAdapterAndroid::IsDiscoverable. | 124 // Implements BluetoothAdapterAndroid::IsDiscoverable. |
115 @CalledByNative | 125 @CalledByNative |
116 private boolean isDiscoverable() { | 126 private boolean isDiscoverable() { |
117 return isPresent() | 127 return isPresent() |
118 && mAdapter.getScanMode() == BluetoothAdapter.SCAN_MODE_CONNECTA
BLE_DISCOVERABLE; | 128 && mAdapter.getScanMode() == BluetoothAdapter.SCAN_MODE_CONNECTA
BLE_DISCOVERABLE; |
119 } | 129 } |
120 | 130 |
121 // Implements BluetoothAdapterAndroid::IsDiscovering. | 131 // Implements BluetoothAdapterAndroid::IsDiscovering. |
122 @CalledByNative | 132 @CalledByNative |
123 private boolean isDiscovering() { | 133 private boolean isDiscovering() { |
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177 || context.checkPermission(Manifest.permission.ACCESS_FINE_LOCAT
ION); | 187 || context.checkPermission(Manifest.permission.ACCESS_FINE_LOCAT
ION); |
178 } | 188 } |
179 | 189 |
180 /** | 190 /** |
181 * Starts a Low Energy scan. | 191 * Starts a Low Energy scan. |
182 * @return True on success. | 192 * @return True on success. |
183 */ | 193 */ |
184 private boolean startScan() { | 194 private boolean startScan() { |
185 Wrappers.BluetoothLeScannerWrapper scanner = mAdapter.getBluetoothLeScan
ner(); | 195 Wrappers.BluetoothLeScannerWrapper scanner = mAdapter.getBluetoothLeScan
ner(); |
186 | 196 |
| 197 if (scanner == null) { |
| 198 return false; |
| 199 } |
| 200 |
187 if (!canScan()) { | 201 if (!canScan()) { |
188 return false; | 202 return false; |
189 } | 203 } |
190 | 204 |
191 // scanMode note: SCAN_FAILED_FEATURE_UNSUPPORTED is caused (at least on
some devices) if | 205 // scanMode note: SCAN_FAILED_FEATURE_UNSUPPORTED is caused (at least on
some devices) if |
192 // setReportDelay() is used or if SCAN_MODE_LOW_LATENCY isn't used. | 206 // setReportDelay() is used or if SCAN_MODE_LOW_LATENCY isn't used. |
193 int scanMode = ScanSettings.SCAN_MODE_LOW_LATENCY; | 207 int scanMode = ScanSettings.SCAN_MODE_LOW_LATENCY; |
194 | 208 |
195 assert mScanCallback == null; | 209 assert mScanCallback == null; |
196 mScanCallback = new ScanCallback(); | 210 mScanCallback = new ScanCallback(); |
197 | 211 |
198 try { | 212 try { |
199 scanner.startScan(null /* filters */, scanMode, mScanCallback); | 213 scanner.startScan(null /* filters */, scanMode, mScanCallback); |
200 } catch (IllegalArgumentException e) { | 214 } catch (IllegalArgumentException e) { |
201 Log.e(TAG, "Cannot start scan: " + e); | 215 Log.e(TAG, "Cannot start scan: " + e); |
| 216 mScanCallback = null; |
| 217 return false; |
| 218 } catch (IllegalStateException e) { |
| 219 Log.e(TAG, "Adapter is off. Cannot start scan: " + e); |
| 220 mScanCallback = null; |
202 return false; | 221 return false; |
203 } | 222 } |
204 return true; | 223 return true; |
205 } | 224 } |
206 | 225 |
207 /** | 226 /** |
208 * Stops the Low Energy scan. | 227 * Stops the Low Energy scan. |
209 * @return True if a scan was in progress. | 228 * @return True if a scan was in progress. |
210 */ | 229 */ |
211 private boolean stopScan() { | 230 private boolean stopScan() { |
212 if (mScanCallback == null) { | 231 if (mScanCallback == null) { |
213 return false; | 232 return false; |
214 } | 233 } |
| 234 |
215 try { | 235 try { |
216 mAdapter.getBluetoothLeScanner().stopScan(mScanCallback); | 236 Wrappers.BluetoothLeScannerWrapper scanner = mAdapter.getBluetoothLe
Scanner(); |
| 237 if (scanner != null) { |
| 238 scanner.stopScan(mScanCallback); |
| 239 } |
217 } catch (IllegalArgumentException e) { | 240 } catch (IllegalArgumentException e) { |
218 Log.e(TAG, "Cannot stop scan: " + e); | 241 Log.e(TAG, "Cannot stop scan: " + e); |
219 mScanCallback = null; | 242 } catch (IllegalStateException e) { |
220 return false; | 243 Log.e(TAG, "Adapter is off. Cannot stop scan: " + e); |
221 } | 244 } |
222 mScanCallback = null; | 245 mScanCallback = null; |
223 return true; | 246 return true; |
224 } | 247 } |
225 | 248 |
226 /** | 249 /** |
227 * Implements callbacks used during a Low Energy scan by notifying upon | 250 * Implements callbacks used during a Low Energy scan by notifying upon |
228 * devices discovered or detecting a scan failure. | 251 * devices discovered or detecting a scan failure. |
229 */ | 252 */ |
230 private class ScanCallback extends Wrappers.ScanCallbackWrapper { | 253 private class ScanCallback extends Wrappers.ScanCallbackWrapper { |
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258 // Binds to BluetoothAdapterAndroid::OnScanFailed. | 281 // Binds to BluetoothAdapterAndroid::OnScanFailed. |
259 private native void nativeOnScanFailed(long nativeBluetoothAdapterAndroid); | 282 private native void nativeOnScanFailed(long nativeBluetoothAdapterAndroid); |
260 | 283 |
261 // Binds to BluetoothAdapterAndroid::CreateOrUpdateDeviceOnScan. | 284 // Binds to BluetoothAdapterAndroid::CreateOrUpdateDeviceOnScan. |
262 // 'Object' type must be used for |bluetoothDeviceWrapper| because inner cla
ss | 285 // 'Object' type must be used for |bluetoothDeviceWrapper| because inner cla
ss |
263 // Wrappers.BluetoothDeviceWrapper reference is not handled by jni_generator
.py JavaToJni. | 286 // Wrappers.BluetoothDeviceWrapper reference is not handled by jni_generator
.py JavaToJni. |
264 // http://crbug.com/505554 | 287 // http://crbug.com/505554 |
265 private native void nativeCreateOrUpdateDeviceOnScan(long nativeBluetoothAda
pterAndroid, | 288 private native void nativeCreateOrUpdateDeviceOnScan(long nativeBluetoothAda
pterAndroid, |
266 String address, Object bluetoothDeviceWrapper, List<ParcelUuid> adve
rtisedUuids); | 289 String address, Object bluetoothDeviceWrapper, List<ParcelUuid> adve
rtisedUuids); |
267 } | 290 } |
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