1 /*
2 * Copyright (C) 2017 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 #include "BaseDynamicSensorDaemon.h"
18 #include "DynamicSensorManager.h"
19 #include "utils/Log.h"
20
21 namespace android {
22 namespace SensorHalExt {
23
onConnectionChange(const std::string & deviceKey,bool connected)24 bool BaseDynamicSensorDaemon::onConnectionChange(const std::string &deviceKey, bool connected) {
25 bool ret = false;
26 auto i = mDeviceKeySensorMap.find(deviceKey);
27 if (connected) {
28 if (i == mDeviceKeySensorMap.end()) {
29 ALOGV("device %s is connected", deviceKey.c_str());
30 // get sensors from implementation
31 BaseSensorVector sensors = createSensor(deviceKey);
32 if (sensors.empty()) {
33 ALOGI("no valid sensor is defined in device %s, ignore", deviceKey.c_str());
34 } else {
35 ALOGV("discovered %zu sensors from device", sensors.size());
36 // build internal table first
37 auto result = mDeviceKeySensorMap.emplace(deviceKey, std::move(sensors));
38 // then register sensor to dynamic sensor manager, result.first is the iterator
39 // of key-value pair; result.first->second is the value, which is s.
40 for (auto &i : result.first->second) {
41 mManager.registerSensor(i);
42 }
43 ALOGV("device %s is registered", deviceKey.c_str());
44 ret = true;
45 }
46 } else {
47 ALOGD("device %s already added and is connected again, ignore", deviceKey.c_str());
48 }
49 } else {
50 ALOGV("device %s is disconnected", deviceKey.c_str());
51 if (i != mDeviceKeySensorMap.end()) {
52 BaseSensorVector sensors = i->second;
53 for (auto &sensor : sensors) {
54 mManager.unregisterSensor(sensor);
55 }
56 mDeviceKeySensorMap.erase(i);
57 // notify implementation
58 removeSensor(deviceKey);
59 ALOGV("device %s is unregistered", deviceKey.c_str());
60 ret = true;
61 } else {
62 ALOGV("device not found in registry");
63 }
64 }
65
66 return ret;
67 }
68 } // namespace SensorHalExt
69 } // namespace android
70
71