1/*
2 * Copyright (C) 2016 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 ANDROID_SENSOR_DIRECT_CONNECTION_H
18#define ANDROID_SENSOR_DIRECT_CONNECTION_H
19
20#include <stdint.h>
21#include <sys/types.h>
22
23#include <binder/BinderService.h>
24
25#include <sensor/Sensor.h>
26#include <sensor/BitTube.h>
27#include <sensor/ISensorServer.h>
28#include <sensor/ISensorEventConnection.h>
29
30#include "SensorService.h"
31
32namespace android {
33
34class SensorService;
35class BitTube;
36
37class SensorService::SensorDirectConnection: public BnSensorEventConnection {
38public:
39    SensorDirectConnection(const sp<SensorService>& service, uid_t uid,
40            const sensors_direct_mem_t *mem, int32_t halChannelHandle,
41            const String16& opPackageName);
42    void dump(String8& result) const;
43    uid_t getUid() const { return mUid; }
44    int32_t getHalChannelHandle() const;
45    bool isEquivalent(const sensors_direct_mem_t *mem) const;
46
47    // stop all active sensor report. if backupRecord is set to false,
48    // those report can be recovered by recoverAll
49    // called by SensorService when enter restricted mode
50    void stopAll(bool backupRecord = false);
51
52    // recover sensor reports previously stopped by stopAll(true)
53    // called by SensorService when return to NORMAL mode.
54    void recoverAll();
55
56protected:
57    virtual ~SensorDirectConnection();
58    // ISensorEventConnection functions
59    virtual void onFirstRef();
60    virtual sp<BitTube> getSensorChannel() const;
61    virtual status_t enableDisable(int handle, bool enabled, nsecs_t samplingPeriodNs,
62                                   nsecs_t maxBatchReportLatencyNs, int reservedFlags);
63    virtual status_t setEventRate(int handle, nsecs_t samplingPeriodNs);
64    virtual status_t flush();
65    virtual int32_t configureChannel(int handle, int rateLevel);
66    virtual void destroy();
67private:
68    const sp<SensorService> mService;
69    const uid_t mUid;
70    const sensors_direct_mem_t mMem;
71    const int32_t mHalChannelHandle;
72    const String16 mOpPackageName;
73
74    mutable Mutex mConnectionLock;
75    std::unordered_map<int, int> mActivated;
76    std::unordered_map<int, int> mActivatedBackup;
77
78    mutable Mutex mDestroyLock;
79    bool mDestroyed;
80};
81
82} // namepsace android
83
84#endif // ANDROID_SENSOR_DIRECT_CONNECTION_H
85
86