Add Additional Information types to NDK

     * {@link ASENSOR_TYPE_HEART_BEAT}

     */

    ASENSOR_TYPE_HEART_BEAT = 31,

    /**

     * This sensor type is for delivering additional sensor information aside

     * from sensor event data.

     *

     * Additional information may include:

     *     - {@link ASENSOR_ADDITIONAL_INFO_INTERNAL_TEMPERATURE}

     *     - {@link ASENSOR_ADDITIONAL_INFO_SAMPLING}

     *     - {@link ASENSOR_ADDITIONAL_INFO_SENSOR_PLACEMENT}

     *     - {@link ASENSOR_ADDITIONAL_INFO_UNTRACKED_DELAY}

     *     - {@link ASENSOR_ADDITIONAL_INFO_VEC3_CALIBRATION}

     *

     * This type will never bind to a sensor. In other words, no sensor in the

     * sensor list can have the type {@link ASENSOR_TYPE_ADDITIONAL_INFO}.

     *

     * If a device supports the sensor additional information feature, it will

     * report additional information events via {@link ASensorEvent} and will

     * have {@link ASensorEvent#type} set to

     * {@link ASENSOR_TYPE_ADDITIONAL_INFO} and {@link ASensorEvent#sensor} set

     * to the handle of the reporting sensor.

     *

     * Additional information reports consist of multiple frames ordered by

     * {@link ASensorEvent#timestamp}. The first frame in the report will have

     * a {@link AAdditionalInfoEvent#type} of

     * {@link ASENSOR_ADDITIONAL_INFO_BEGIN}, and the last frame in the report

     * will have a {@link AAdditionalInfoEvent#type} of

     * {@link ASENSOR_ADDITIONAL_INFO_END}.

     *

     */

    ASENSOR_TYPE_ADDITIONAL_INFO = 33,

    /**

     * {@link ASENSOR_TYPE_LOW_LATENCY_OFFBODY_DETECT}

     */

    ASENSOR_DIRECT_CHANNEL_TYPE_HARDWARE_BUFFER = 2

};

/**

 * Sensor Additional Info Types.

 *

 * Used to populate {@link AAdditionalInfoEvent#type}.

 */

enum {

    /** Marks the beginning of additional information frames */

    ASENSOR_ADDITIONAL_INFO_BEGIN = 0,

    /** Marks the end of additional information frames */

    ASENSOR_ADDITIONAL_INFO_END = 1,

    /**

     * Estimation of the delay that is not tracked by sensor timestamps. This

     * includes delay introduced by sensor front-end filtering, data transport,

     * etc.

     * float[2]: delay in seconds, standard deviation of estimated value

     */

    ASENSOR_ADDITIONAL_INFO_UNTRACKED_DELAY = 0x10000,

    /** float: Celsius temperature */

    ASENSOR_ADDITIONAL_INFO_INTERNAL_TEMPERATURE,

    /**

     * First three rows of a homogeneous matrix, which represents calibration to

     * a three-element vector raw sensor reading.

     * float[12]: 3x4 matrix in row major order

     */

    ASENSOR_ADDITIONAL_INFO_VEC3_CALIBRATION,

    /**

     * Location and orientation of sensor element in the device frame: origin is

     * the geometric center of the mobile device screen surface; the axis

     * definition corresponds to Android sensor definitions.

     * float[12]: 3x4 matrix in row major order

     */

    ASENSOR_ADDITIONAL_INFO_SENSOR_PLACEMENT,

    /**

     * float[2]: raw sample period in seconds,

     *           standard deviation of sampling period

     */

    ASENSOR_ADDITIONAL_INFO_SAMPLING,

};

/*

 * A few useful constants

 */

    int32_t  handle;

} ADynamicSensorEvent;

typedef struct {

typedef struct AAdditionalInfoEvent {

    int32_t type;

    int32_t serial;

    union {