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| #ifndef ANDROID_SENSOR_BASE_H
#define ANDROID_SENSOR_BASE_H
#include <stdint.h>
#include <errno.h>
#include <sys/cdefs.h>
#include <sys/types.h>
/*****************************************************************************/
struct sensors_event_t;
class SensorBase {
protected:
const char* dev_name;
const char* data_name;
char input_name[PATH_MAX];
int dev_fd;
int data_fd;
int openInput(const char* inputName);
static int64_t getTimestamp();
static int64_t timevalToNano(timeval const& t) {
return t.tv_sec*1000000000LL + t.tv_usec*1000;
}
int open_device(int open_mode = O_RDONLY);
int close_device();
// int write_int(char const *path, int value);
int write_sys_attribute(
const char *path, const char *value, int bytes);
public:
SensorBase(
const char* dev_name,
const char* data_name);
virtual ~SensorBase();
virtual int readEvents(sensors_event_t* data, int count) = 0;
virtual bool hasPendingEvents() const;
virtual int getFd() const;
virtual int setDelay(int32_t handle, int64_t ns);
virtual int enable(int32_t handle, int enabled) = 0;
// virtual int setEnable(int32_t handle, int enabled) = 0;
/* It returns the number of reference. */
virtual int getEnable(int32_t handle) = 0;
virtual int64_t getDelay(int32_t handle);
};
/*****************************************************************************/
#endif // ANDROID_SENSOR_BASE_H
|