1/*
2 * Copyright 2015, 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#ifndef MEDIA_BATTERY_NOTIFIER_H
18#define MEDIA_BATTERY_NOTIFIER_H
19
20#include <binder/IBatteryStats.h>
21#include <utils/Singleton.h>
22#include <utils/String8.h>
23
24#include <map>
25#include <utility>
26
27namespace android {
28
29/**
30 * Class used for logging battery life events in mediaserver.
31 */
32class BatteryNotifier : public Singleton<BatteryNotifier> {
33
34    friend class Singleton<BatteryNotifier>;
35    BatteryNotifier();
36
37public:
38    ~BatteryNotifier();
39
40    void noteStartVideo();
41    void noteStopVideo();
42    void noteResetVideo();
43    void noteStartAudio();
44    void noteStopAudio();
45    void noteResetAudio();
46    void noteFlashlightOn(const String8& id, int uid);
47    void noteFlashlightOff(const String8& id, int uid);
48    void noteResetFlashlight();
49    void noteStartCamera(const String8& id, int uid);
50    void noteStopCamera(const String8& id, int uid);
51    void noteResetCamera();
52
53private:
54    void onBatteryStatServiceDied();
55
56    class DeathNotifier : public IBinder::DeathRecipient {
57        virtual void binderDied(const wp<IBinder>& /*who*/);
58    };
59
60    Mutex mLock;
61    int mVideoRefCount;
62    int mAudioRefCount;
63    std::map<std::pair<String8, int>, bool> mFlashlightState;
64    std::map<std::pair<String8, int>, bool> mCameraState;
65    sp<IBatteryStats> mBatteryStatService;
66    sp<DeathNotifier> mDeathNotifier;
67
68    sp<IBatteryStats> getBatteryService_l();
69};
70
71}  // namespace android
72
73#endif // MEDIA_BATTERY_NOTIFIER_H
74