1 /*
2  * Copyright (c) 2023 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef AUDIO_HEAD_TRACKER_H
17 #define AUDIO_HEAD_TRACKER_H
18 
19 #include <cstdint>
20 #include <mutex>
21 
22 #ifdef SENSOR_ENABLE
23 #include "sensor_agent.h"
24 #endif
25 
26 namespace OHOS {
27 namespace AudioStandard {
28 
29 #ifdef SENSOR_ENABLE
30 const uint32_t NONE_SPATIALIZER_ENGINE = 0;
31 const uint32_t ARM_SPATIALIZER_ENGINE = 1;
32 const uint32_t DSP_SPATIALIZER_ENGINE = 2;
33 
34 class HeadTracker {
35 public:
36     HeadTracker();
37     ~HeadTracker();
38     int32_t SensorInit();
39     int32_t SensorSetConfig(int32_t spatializerEngineState);
40     int32_t SensorActive();
41     int32_t SensorDeactive();
42     int32_t SensorUnsubscribe();
43     HeadPostureData GetHeadPostureData();
44     void SetHeadPostureData(HeadPostureData headPostureData);
45 private:
46     static void HeadPostureDataProcCb(SensorEvent *event);
47     static HeadPostureData headPostureData_;
48     SensorUser sensorUser_ = {};
49     int64_t sensorSamplingInterval_ = 30000000; // 30000000 ns = 30 ms
50     static std::mutex headTrackerMutex_;
51 };
52 #endif
53 }  // namespace AudioStandard
54 }  // namespace OHOS
55 #endif // AUDIO_HEAD_TRACKER_H
56