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| 1 // Copyright 2014 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 #include "chromeos/dbus/fake_bluetooth_gatt_characteristic_client.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/location.h" | |
| 9 #include "base/rand_util.h" | |
| 10 #include "base/single_thread_task_runner.h" | |
| 11 #include "base/thread_task_runner_handle.h" | |
| 12 #include "base/time/time.h" | |
| 13 #include "chromeos/dbus/dbus_thread_manager.h" | |
| 14 #include "chromeos/dbus/fake_bluetooth_gatt_descriptor_client.h" | |
| 15 #include "third_party/cros_system_api/dbus/service_constants.h" | |
| 16 | |
| 17 namespace chromeos { | |
| 18 | |
| 19 namespace { | |
| 20 | |
| 21 const int kStartNotifyResponseIntervalMs = 200; | |
| 22 const int kHeartRateMeasurementNotificationIntervalMs = 2000; | |
| 23 | |
| 24 } // namespace | |
| 25 | |
| 26 FakeBluetoothGattCharacteristicClient::DelayedCallback::DelayedCallback( | |
| 27 base::Closure callback, | |
| 28 size_t delay) | |
| 29 : callback_(callback), delay_(delay) { | |
| 30 } | |
| 31 | |
| 32 FakeBluetoothGattCharacteristicClient::DelayedCallback::~DelayedCallback() { | |
| 33 } | |
| 34 | |
| 35 // static | |
| 36 const char FakeBluetoothGattCharacteristicClient:: | |
| 37 kHeartRateMeasurementPathComponent[] = "char0000"; | |
| 38 const char FakeBluetoothGattCharacteristicClient:: | |
| 39 kBodySensorLocationPathComponent[] = "char0001"; | |
| 40 const char FakeBluetoothGattCharacteristicClient:: | |
| 41 kHeartRateControlPointPathComponent[] = "char0002"; | |
| 42 | |
| 43 // static | |
| 44 const char FakeBluetoothGattCharacteristicClient::kHeartRateMeasurementUUID[] = | |
| 45 "00002a37-0000-1000-8000-00805f9b34fb"; | |
| 46 const char FakeBluetoothGattCharacteristicClient::kBodySensorLocationUUID[] = | |
| 47 "00002a38-0000-1000-8000-00805f9b34fb"; | |
| 48 const char FakeBluetoothGattCharacteristicClient::kHeartRateControlPointUUID[] = | |
| 49 "00002a39-0000-1000-8000-00805f9b34fb"; | |
| 50 | |
| 51 FakeBluetoothGattCharacteristicClient::Properties::Properties( | |
| 52 const PropertyChangedCallback& callback) | |
| 53 : BluetoothGattCharacteristicClient::Properties( | |
| 54 NULL, | |
| 55 bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface, | |
| 56 callback) { | |
| 57 } | |
| 58 | |
| 59 FakeBluetoothGattCharacteristicClient::Properties::~Properties() { | |
| 60 } | |
| 61 | |
| 62 void FakeBluetoothGattCharacteristicClient::Properties::Get( | |
| 63 dbus::PropertyBase* property, | |
| 64 dbus::PropertySet::GetCallback callback) { | |
| 65 VLOG(1) << "Get " << property->name(); | |
| 66 callback.Run(true); | |
| 67 } | |
| 68 | |
| 69 void FakeBluetoothGattCharacteristicClient::Properties::GetAll() { | |
| 70 VLOG(1) << "GetAll"; | |
| 71 } | |
| 72 | |
| 73 void FakeBluetoothGattCharacteristicClient::Properties::Set( | |
| 74 dbus::PropertyBase* property, | |
| 75 dbus::PropertySet::SetCallback callback) { | |
| 76 VLOG(1) << "Set " << property->name(); | |
| 77 callback.Run(false); | |
| 78 } | |
| 79 | |
| 80 FakeBluetoothGattCharacteristicClient::FakeBluetoothGattCharacteristicClient() | |
| 81 : heart_rate_visible_(false), | |
| 82 authorized_(true), | |
| 83 authenticated_(true), | |
| 84 calories_burned_(0), | |
| 85 extra_requests_(0), | |
| 86 weak_ptr_factory_(this) { | |
| 87 } | |
| 88 | |
| 89 FakeBluetoothGattCharacteristicClient:: | |
| 90 ~FakeBluetoothGattCharacteristicClient() { | |
| 91 for (const auto& it : action_extra_requests_) { | |
| 92 delete it.second; | |
| 93 } | |
| 94 action_extra_requests_.clear(); | |
| 95 } | |
| 96 | |
| 97 void FakeBluetoothGattCharacteristicClient::Init(dbus::Bus* bus) { | |
| 98 } | |
| 99 | |
| 100 void FakeBluetoothGattCharacteristicClient::AddObserver(Observer* observer) { | |
| 101 observers_.AddObserver(observer); | |
| 102 } | |
| 103 | |
| 104 void FakeBluetoothGattCharacteristicClient::RemoveObserver(Observer* observer) { | |
| 105 observers_.RemoveObserver(observer); | |
| 106 } | |
| 107 | |
| 108 std::vector<dbus::ObjectPath> | |
| 109 FakeBluetoothGattCharacteristicClient::GetCharacteristics() { | |
| 110 std::vector<dbus::ObjectPath> paths; | |
| 111 if (IsHeartRateVisible()) { | |
| 112 paths.push_back(dbus::ObjectPath(heart_rate_measurement_path_)); | |
| 113 paths.push_back(dbus::ObjectPath(body_sensor_location_path_)); | |
| 114 paths.push_back(dbus::ObjectPath(heart_rate_control_point_path_)); | |
| 115 } | |
| 116 return paths; | |
| 117 } | |
| 118 | |
| 119 FakeBluetoothGattCharacteristicClient::Properties* | |
| 120 FakeBluetoothGattCharacteristicClient::GetProperties( | |
| 121 const dbus::ObjectPath& object_path) { | |
| 122 if (object_path.value() == heart_rate_measurement_path_) { | |
| 123 DCHECK(heart_rate_measurement_properties_.get()); | |
| 124 return heart_rate_measurement_properties_.get(); | |
| 125 } | |
| 126 if (object_path.value() == body_sensor_location_path_) { | |
| 127 DCHECK(body_sensor_location_properties_.get()); | |
| 128 return body_sensor_location_properties_.get(); | |
| 129 } | |
| 130 if (object_path.value() == heart_rate_control_point_path_) { | |
| 131 DCHECK(heart_rate_control_point_properties_.get()); | |
| 132 return heart_rate_control_point_properties_.get(); | |
| 133 } | |
| 134 return NULL; | |
| 135 } | |
| 136 | |
| 137 void FakeBluetoothGattCharacteristicClient::ReadValue( | |
| 138 const dbus::ObjectPath& object_path, | |
| 139 const ValueCallback& callback, | |
| 140 const ErrorCallback& error_callback) { | |
| 141 if (!authenticated_) { | |
| 142 error_callback.Run("org.bluez.Error.NotPaired", "Please login"); | |
| 143 return; | |
| 144 } | |
| 145 | |
| 146 if (!authorized_) { | |
| 147 error_callback.Run("org.bluez.Error.NotAuthorized", "Authorize first"); | |
| 148 return; | |
| 149 } | |
| 150 | |
| 151 if (object_path.value() == heart_rate_control_point_path_) { | |
| 152 error_callback.Run("org.bluez.Error.NotPermitted", | |
| 153 "Reads of this value are not allowed"); | |
| 154 return; | |
| 155 } | |
| 156 | |
| 157 if (object_path.value() == heart_rate_measurement_path_) { | |
| 158 error_callback.Run("org.bluez.Error.NotSupported", | |
| 159 "Action not supported on this characteristic"); | |
| 160 return; | |
| 161 } | |
| 162 | |
| 163 if (object_path.value() != body_sensor_location_path_) { | |
| 164 error_callback.Run(kUnknownCharacteristicError, ""); | |
| 165 return; | |
| 166 } | |
| 167 | |
| 168 if (action_extra_requests_.find("ReadValue") != | |
| 169 action_extra_requests_.end()) { | |
| 170 DelayedCallback* delayed = action_extra_requests_["ReadValue"]; | |
| 171 delayed->delay_--; | |
| 172 error_callback.Run("org.bluez.Error.InProgress", | |
| 173 "Another read is currenty in progress"); | |
| 174 if (delayed->delay_ == 0) { | |
| 175 delayed->callback_.Run(); | |
| 176 action_extra_requests_.erase("ReadValue"); | |
| 177 delete delayed; | |
| 178 } | |
| 179 return; | |
| 180 } | |
| 181 | |
| 182 base::Closure completed_callback; | |
| 183 if (!IsHeartRateVisible()) { | |
| 184 completed_callback = | |
| 185 base::Bind(error_callback, kUnknownCharacteristicError, ""); | |
| 186 } else { | |
| 187 std::vector<uint8> value = {0x06}; // Location is "foot". | |
| 188 completed_callback = base::Bind( | |
| 189 &FakeBluetoothGattCharacteristicClient::DelayedReadValueCallback, | |
| 190 weak_ptr_factory_.GetWeakPtr(), object_path, callback, value); | |
| 191 } | |
| 192 | |
| 193 if (extra_requests_ > 0) { | |
| 194 action_extra_requests_["ReadValue"] = | |
| 195 new DelayedCallback(completed_callback, extra_requests_); | |
| 196 return; | |
| 197 } | |
| 198 | |
| 199 completed_callback.Run(); | |
| 200 } | |
| 201 | |
| 202 void FakeBluetoothGattCharacteristicClient::WriteValue( | |
| 203 const dbus::ObjectPath& object_path, | |
| 204 const std::vector<uint8>& value, | |
| 205 const base::Closure& callback, | |
| 206 const ErrorCallback& error_callback) { | |
| 207 if (!authenticated_) { | |
| 208 error_callback.Run("org.bluez.Error.NotPaired", "Please login"); | |
| 209 return; | |
| 210 } | |
| 211 | |
| 212 if (!authorized_) { | |
| 213 error_callback.Run("org.bluez.Error.NotAuthorized", "Authorize first"); | |
| 214 return; | |
| 215 } | |
| 216 | |
| 217 if (!IsHeartRateVisible()) { | |
| 218 error_callback.Run(kUnknownCharacteristicError, ""); | |
| 219 return; | |
| 220 } | |
| 221 | |
| 222 if (object_path.value() == heart_rate_measurement_path_) { | |
| 223 error_callback.Run("org.bluez.Error.NotSupported", | |
| 224 "Action not supported on this characteristic"); | |
| 225 return; | |
| 226 } | |
| 227 | |
| 228 if (object_path.value() != heart_rate_control_point_path_) { | |
| 229 error_callback.Run("org.bluez.Error.NotPermitted", | |
| 230 "Writes of this value are not allowed"); | |
| 231 return; | |
| 232 } | |
| 233 | |
| 234 DCHECK(heart_rate_control_point_properties_.get()); | |
| 235 if (action_extra_requests_.find("WriteValue") != | |
| 236 action_extra_requests_.end()) { | |
| 237 DelayedCallback* delayed = action_extra_requests_["WriteValue"]; | |
| 238 delayed->delay_--; | |
| 239 error_callback.Run("org.bluez.Error.InProgress", | |
| 240 "Another write is in progress"); | |
| 241 if (delayed->delay_ == 0) { | |
| 242 delayed->callback_.Run(); | |
| 243 action_extra_requests_.erase("WriteValue"); | |
| 244 delete delayed; | |
| 245 } | |
| 246 return; | |
| 247 } | |
| 248 base::Closure completed_callback; | |
| 249 if (value.size() != 1) { | |
| 250 completed_callback = base::Bind(error_callback, | |
| 251 "org.bluez.Error.InvalidValueLength", | |
| 252 "Invalid length for write"); | |
| 253 } else if (value[0] > 1) { | |
| 254 completed_callback = base::Bind(error_callback, | |
| 255 "org.bluez.Error.Failed", | |
| 256 "Invalid value given for write"); | |
| 257 } else if (value[0] == 1) { | |
| 258 // TODO(jamuraa): make this happen when the callback happens | |
| 259 calories_burned_ = 0; | |
| 260 completed_callback = callback; | |
| 261 } | |
| 262 | |
| 263 if (extra_requests_ > 0) { | |
| 264 action_extra_requests_["WriteValue"] = | |
| 265 new DelayedCallback(completed_callback, extra_requests_); | |
| 266 return; | |
| 267 } | |
| 268 completed_callback.Run(); | |
| 269 } | |
| 270 | |
| 271 void FakeBluetoothGattCharacteristicClient::StartNotify( | |
| 272 const dbus::ObjectPath& object_path, | |
| 273 const base::Closure& callback, | |
| 274 const ErrorCallback& error_callback) { | |
| 275 if (!IsHeartRateVisible()) { | |
| 276 error_callback.Run(kUnknownCharacteristicError, ""); | |
| 277 return; | |
| 278 } | |
| 279 | |
| 280 if (object_path.value() != heart_rate_measurement_path_) { | |
| 281 error_callback.Run("org.bluez.Error.NotSupported", | |
| 282 "This characteristic does not support notifications"); | |
| 283 return; | |
| 284 } | |
| 285 | |
| 286 if (heart_rate_measurement_properties_->notifying.value()) { | |
| 287 error_callback.Run("org.bluez.Error.InProgress", | |
| 288 "Characteristic already notifying"); | |
| 289 return; | |
| 290 } | |
| 291 | |
| 292 heart_rate_measurement_properties_->notifying.ReplaceValue(true); | |
| 293 ScheduleHeartRateMeasurementValueChange(); | |
| 294 | |
| 295 // Respond asynchronously. | |
| 296 base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( | |
| 297 FROM_HERE, callback, | |
| 298 base::TimeDelta::FromMilliseconds(kStartNotifyResponseIntervalMs)); | |
| 299 } | |
| 300 | |
| 301 void FakeBluetoothGattCharacteristicClient::StopNotify( | |
| 302 const dbus::ObjectPath& object_path, | |
| 303 const base::Closure& callback, | |
| 304 const ErrorCallback& error_callback) { | |
| 305 if (!IsHeartRateVisible()) { | |
| 306 error_callback.Run(kUnknownCharacteristicError, ""); | |
| 307 return; | |
| 308 } | |
| 309 | |
| 310 if (object_path.value() != heart_rate_measurement_path_) { | |
| 311 error_callback.Run("org.bluez.Error.NotSupported", | |
| 312 "This characteristic does not support notifications"); | |
| 313 return; | |
| 314 } | |
| 315 | |
| 316 if (!heart_rate_measurement_properties_->notifying.value()) { | |
| 317 error_callback.Run("org.bluez.Error.Failed", "Not notifying"); | |
| 318 return; | |
| 319 } | |
| 320 | |
| 321 heart_rate_measurement_properties_->notifying.ReplaceValue(false); | |
| 322 | |
| 323 callback.Run(); | |
| 324 } | |
| 325 | |
| 326 void FakeBluetoothGattCharacteristicClient::ExposeHeartRateCharacteristics( | |
| 327 const dbus::ObjectPath& service_path) { | |
| 328 if (IsHeartRateVisible()) { | |
| 329 VLOG(2) << "Fake Heart Rate characteristics are already visible."; | |
| 330 return; | |
| 331 } | |
| 332 | |
| 333 VLOG(2) << "Exposing fake Heart Rate characteristics."; | |
| 334 | |
| 335 std::vector<std::string> flags; | |
| 336 | |
| 337 // ==== Heart Rate Measurement Characteristic ==== | |
| 338 heart_rate_measurement_path_ = | |
| 339 service_path.value() + "/" + kHeartRateMeasurementPathComponent; | |
| 340 heart_rate_measurement_properties_.reset(new Properties(base::Bind( | |
| 341 &FakeBluetoothGattCharacteristicClient::OnPropertyChanged, | |
| 342 weak_ptr_factory_.GetWeakPtr(), | |
| 343 dbus::ObjectPath(heart_rate_measurement_path_)))); | |
| 344 heart_rate_measurement_properties_->uuid.ReplaceValue( | |
| 345 kHeartRateMeasurementUUID); | |
| 346 heart_rate_measurement_properties_->service.ReplaceValue(service_path); | |
| 347 flags.push_back(bluetooth_gatt_characteristic::kFlagNotify); | |
| 348 heart_rate_measurement_properties_->flags.ReplaceValue(flags); | |
| 349 | |
| 350 // ==== Body Sensor Location Characteristic ==== | |
| 351 body_sensor_location_path_ = | |
| 352 service_path.value() + "/" + kBodySensorLocationPathComponent; | |
| 353 body_sensor_location_properties_.reset(new Properties(base::Bind( | |
| 354 &FakeBluetoothGattCharacteristicClient::OnPropertyChanged, | |
| 355 weak_ptr_factory_.GetWeakPtr(), | |
| 356 dbus::ObjectPath(body_sensor_location_path_)))); | |
| 357 body_sensor_location_properties_->uuid.ReplaceValue(kBodySensorLocationUUID); | |
| 358 body_sensor_location_properties_->service.ReplaceValue(service_path); | |
| 359 flags.clear(); | |
| 360 flags.push_back(bluetooth_gatt_characteristic::kFlagRead); | |
| 361 body_sensor_location_properties_->flags.ReplaceValue(flags); | |
| 362 | |
| 363 // ==== Heart Rate Control Point Characteristic ==== | |
| 364 heart_rate_control_point_path_ = | |
| 365 service_path.value() + "/" + kHeartRateControlPointPathComponent; | |
| 366 heart_rate_control_point_properties_.reset(new Properties(base::Bind( | |
| 367 &FakeBluetoothGattCharacteristicClient::OnPropertyChanged, | |
| 368 weak_ptr_factory_.GetWeakPtr(), | |
| 369 dbus::ObjectPath(heart_rate_control_point_path_)))); | |
| 370 heart_rate_control_point_properties_->uuid.ReplaceValue( | |
| 371 kHeartRateControlPointUUID); | |
| 372 heart_rate_control_point_properties_->service.ReplaceValue(service_path); | |
| 373 flags.clear(); | |
| 374 flags.push_back(bluetooth_gatt_characteristic::kFlagWrite); | |
| 375 heart_rate_control_point_properties_->flags.ReplaceValue(flags); | |
| 376 | |
| 377 heart_rate_visible_ = true; | |
| 378 | |
| 379 NotifyCharacteristicAdded(dbus::ObjectPath(heart_rate_measurement_path_)); | |
| 380 NotifyCharacteristicAdded(dbus::ObjectPath(body_sensor_location_path_)); | |
| 381 NotifyCharacteristicAdded(dbus::ObjectPath(heart_rate_control_point_path_)); | |
| 382 | |
| 383 // Expose CCC descriptor for Heart Rate Measurement characteristic. | |
| 384 FakeBluetoothGattDescriptorClient* descriptor_client = | |
| 385 static_cast<FakeBluetoothGattDescriptorClient*>( | |
| 386 DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()); | |
| 387 dbus::ObjectPath ccc_path(descriptor_client->ExposeDescriptor( | |
| 388 dbus::ObjectPath(heart_rate_measurement_path_), | |
| 389 FakeBluetoothGattDescriptorClient:: | |
| 390 kClientCharacteristicConfigurationUUID)); | |
| 391 DCHECK(ccc_path.IsValid()); | |
| 392 heart_rate_measurement_ccc_desc_path_ = ccc_path.value(); | |
| 393 | |
| 394 std::vector<dbus::ObjectPath> desc_paths; | |
| 395 desc_paths.push_back(ccc_path); | |
| 396 | |
| 397 heart_rate_measurement_properties_->descriptors.ReplaceValue(desc_paths); | |
| 398 } | |
| 399 | |
| 400 void FakeBluetoothGattCharacteristicClient::HideHeartRateCharacteristics() { | |
| 401 VLOG(2) << "Hiding fake Heart Rate characteristics."; | |
| 402 | |
| 403 // Hide the descriptors. | |
| 404 FakeBluetoothGattDescriptorClient* descriptor_client = | |
| 405 static_cast<FakeBluetoothGattDescriptorClient*>( | |
| 406 DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()); | |
| 407 descriptor_client->HideDescriptor( | |
| 408 dbus::ObjectPath(heart_rate_measurement_ccc_desc_path_)); | |
| 409 | |
| 410 // Notify the observers before deleting the properties structures so that they | |
| 411 // can be accessed from the observer method. | |
| 412 NotifyCharacteristicRemoved(dbus::ObjectPath(heart_rate_measurement_path_)); | |
| 413 NotifyCharacteristicRemoved(dbus::ObjectPath(body_sensor_location_path_)); | |
| 414 NotifyCharacteristicRemoved(dbus::ObjectPath(heart_rate_control_point_path_)); | |
| 415 | |
| 416 heart_rate_measurement_properties_.reset(); | |
| 417 body_sensor_location_properties_.reset(); | |
| 418 heart_rate_control_point_properties_.reset(); | |
| 419 | |
| 420 heart_rate_measurement_path_.clear(); | |
| 421 body_sensor_location_path_.clear(); | |
| 422 heart_rate_control_point_path_.clear(); | |
| 423 heart_rate_visible_ = false; | |
| 424 } | |
| 425 | |
| 426 void FakeBluetoothGattCharacteristicClient::SetExtraProcessing( | |
| 427 size_t requests) { | |
| 428 extra_requests_ = requests; | |
| 429 if (extra_requests_ == 0) { | |
| 430 for (const auto& it : action_extra_requests_) { | |
| 431 it.second->callback_.Run(); | |
| 432 delete it.second; | |
| 433 } | |
| 434 action_extra_requests_.clear(); | |
| 435 return; | |
| 436 } | |
| 437 VLOG(2) << "Requests SLOW now, " << requests << " InProgress errors each."; | |
| 438 } | |
| 439 | |
| 440 size_t FakeBluetoothGattCharacteristicClient::GetExtraProcessing() const { | |
| 441 return extra_requests_; | |
| 442 } | |
| 443 | |
| 444 dbus::ObjectPath | |
| 445 FakeBluetoothGattCharacteristicClient::GetHeartRateMeasurementPath() const { | |
| 446 return dbus::ObjectPath(heart_rate_measurement_path_); | |
| 447 } | |
| 448 | |
| 449 dbus::ObjectPath | |
| 450 FakeBluetoothGattCharacteristicClient::GetBodySensorLocationPath() const { | |
| 451 return dbus::ObjectPath(body_sensor_location_path_); | |
| 452 } | |
| 453 | |
| 454 dbus::ObjectPath | |
| 455 FakeBluetoothGattCharacteristicClient::GetHeartRateControlPointPath() const { | |
| 456 return dbus::ObjectPath(heart_rate_control_point_path_); | |
| 457 } | |
| 458 | |
| 459 void FakeBluetoothGattCharacteristicClient::OnPropertyChanged( | |
| 460 const dbus::ObjectPath& object_path, | |
| 461 const std::string& property_name) { | |
| 462 VLOG(2) << "Characteristic property changed: " << object_path.value() | |
| 463 << ": " << property_name; | |
| 464 | |
| 465 FOR_EACH_OBSERVER(BluetoothGattCharacteristicClient::Observer, observers_, | |
| 466 GattCharacteristicPropertyChanged( | |
| 467 object_path, property_name)); | |
| 468 } | |
| 469 | |
| 470 void FakeBluetoothGattCharacteristicClient::NotifyCharacteristicAdded( | |
| 471 const dbus::ObjectPath& object_path) { | |
| 472 VLOG(2) << "GATT characteristic added: " << object_path.value(); | |
| 473 FOR_EACH_OBSERVER(BluetoothGattCharacteristicClient::Observer, observers_, | |
| 474 GattCharacteristicAdded(object_path)); | |
| 475 } | |
| 476 | |
| 477 void FakeBluetoothGattCharacteristicClient::NotifyCharacteristicRemoved( | |
| 478 const dbus::ObjectPath& object_path) { | |
| 479 VLOG(2) << "GATT characteristic removed: " << object_path.value(); | |
| 480 FOR_EACH_OBSERVER(BluetoothGattCharacteristicClient::Observer, observers_, | |
| 481 GattCharacteristicRemoved(object_path)); | |
| 482 } | |
| 483 | |
| 484 void FakeBluetoothGattCharacteristicClient:: | |
| 485 ScheduleHeartRateMeasurementValueChange() { | |
| 486 if (!IsHeartRateVisible()) | |
| 487 return; | |
| 488 | |
| 489 // Don't send updates if the characteristic is not notifying. | |
| 490 if (!heart_rate_measurement_properties_->notifying.value()) | |
| 491 return; | |
| 492 | |
| 493 VLOG(2) << "Updating heart rate value."; | |
| 494 std::vector<uint8> measurement = GetHeartRateMeasurementValue(); | |
| 495 heart_rate_measurement_properties_->value.ReplaceValue(measurement); | |
| 496 | |
| 497 base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( | |
| 498 FROM_HERE, base::Bind(&FakeBluetoothGattCharacteristicClient:: | |
| 499 ScheduleHeartRateMeasurementValueChange, | |
| 500 weak_ptr_factory_.GetWeakPtr()), | |
| 501 base::TimeDelta::FromMilliseconds( | |
| 502 kHeartRateMeasurementNotificationIntervalMs)); | |
| 503 } | |
| 504 | |
| 505 void FakeBluetoothGattCharacteristicClient::DelayedReadValueCallback( | |
| 506 const dbus::ObjectPath& object_path, | |
| 507 const ValueCallback& callback, | |
| 508 const std::vector<uint8_t>& value) { | |
| 509 Properties* properties = GetProperties(object_path); | |
| 510 DCHECK(properties); | |
| 511 | |
| 512 properties->value.ReplaceValue(value); | |
| 513 callback.Run(value); | |
| 514 } | |
| 515 | |
| 516 std::vector<uint8> | |
| 517 FakeBluetoothGattCharacteristicClient::GetHeartRateMeasurementValue() { | |
| 518 // TODO(armansito): We should make sure to properly pack this struct to ensure | |
| 519 // correct byte alignment and endianness. It doesn't matter too much right now | |
| 520 // as this is a fake and GCC on Linux seems to do the right thing. | |
| 521 struct { | |
| 522 uint8 flags; | |
| 523 uint8 bpm; | |
| 524 uint16 energy_expanded; | |
| 525 uint16 rr_interval; | |
| 526 } value; | |
| 527 | |
| 528 // Flags in LSB: 0 11 1 1 000 | |
| 529 // | | | | | | |
| 530 // 8-bit bpm format -- | | | | | |
| 531 // Sensor contact supported -- | | | | |
| 532 // Energy expanded field present -- | | | |
| 533 // RR-Interval values present ------- | | |
| 534 // Reserved for future use ------------ | |
| 535 value.flags = 0x0; | |
| 536 value.flags |= (0x03 << 1); | |
| 537 value.flags |= (0x01 << 3); | |
| 538 value.flags |= (0x01 << 4); | |
| 539 | |
| 540 // Pick a value between 117 bpm and 153 bpm for heart rate. | |
| 541 value.bpm = static_cast<uint8>(base::RandInt(117, 153)); | |
| 542 | |
| 543 // Total calories burned in kJoules since the last reset. Increment this by 1 | |
| 544 // every time. It's fine if it overflows: it becomes 0 when the user resets | |
| 545 // the heart rate monitor (or pretend that he had a lot of cheeseburgers). | |
| 546 value.energy_expanded = calories_burned_++; | |
| 547 | |
| 548 // Include one RR-Interval value, in seconds. | |
| 549 value.rr_interval = 60/value.bpm; | |
| 550 | |
| 551 // Return the bytes in an array. | |
| 552 uint8* bytes = reinterpret_cast<uint8*>(&value); | |
| 553 std::vector<uint8> return_value; | |
| 554 return_value.assign(bytes, bytes + sizeof(value)); | |
| 555 return return_value; | |
| 556 } | |
| 557 | |
| 558 bool FakeBluetoothGattCharacteristicClient::IsHeartRateVisible() const { | |
| 559 DCHECK(heart_rate_visible_ != heart_rate_measurement_path_.empty()); | |
| 560 DCHECK(heart_rate_visible_ != body_sensor_location_path_.empty()); | |
| 561 DCHECK(heart_rate_visible_ != heart_rate_control_point_path_.empty()); | |
| 562 DCHECK(heart_rate_visible_ == !!heart_rate_measurement_properties_.get()); | |
| 563 DCHECK(heart_rate_visible_ == !!body_sensor_location_properties_.get()); | |
| 564 DCHECK(heart_rate_visible_ == !!heart_rate_control_point_properties_.get()); | |
| 565 return heart_rate_visible_; | |
| 566 } | |
| 567 | |
| 568 } // namespace chromeos | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1347193004:
Refactor DBusThreadManager to split away BT clients. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master