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      1 /*
      2  * Copyright (C) 2008 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_GYRO_SENSOR_H
     18 #define ANDROID_GYRO_SENSOR_H
     19 
     20 #include <stdint.h>
     21 #include <errno.h>
     22 #include <sys/cdefs.h>
     23 #include <sys/types.h>
     24 
     25 #include "sensors.h"
     26 #include "SensorBase.h"
     27 #include "InputEventReader.h"
     28 
     29 /*****************************************************************************/
     30 
     31 struct input_event;
     32 
     33 class GyroSensor : public SensorBase {
     34     int mEnabled;
     35     InputEventCircularReader mInputReader;
     36     sensors_event_t mPendingEvent;
     37     bool mHasPendingEvent;
     38     char input_sysfs_path[PATH_MAX];
     39     int input_sysfs_path_len;
     40     int64_t mEnabledTime;
     41 
     42     int setInitialState();
     43 
     44 public:
     45             GyroSensor();
     46     virtual ~GyroSensor();
     47     virtual int readEvents(sensors_event_t* data, int count);
     48     virtual bool hasPendingEvents() const;
     49     virtual int setDelay(int32_t handle, int64_t ns);
     50     virtual int enable(int32_t handle, int enabled);
     51 };
     52 
     53 /*****************************************************************************/
     54 
     55 #endif  // ANDROID_GYRO_SENSOR_H
     56