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
21namespace android {
22namespace SensorHalExt {
23
24bool 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