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      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 package android.hardware.gnss@1.0;
     18 
     19 @export(name="", value_prefix="GNSS_MAX_")
     20 enum GnssMax : uint32_t {
     21 /** Maximum number of SVs for gnssSvStatusCb(). */
     22     SVS_COUNT = 64,
     23 };
     24 
     25 /** Milliseconds since January 1, 1970 */
     26 typedef int64_t GnssUtcTime;
     27 
     28 /**
     29  * Constellation type of GnssSvInfo
     30  */
     31 
     32 @export(name="", value_prefix="GNSS_CONSTELLATION_")
     33 enum GnssConstellationType : uint8_t {
     34     UNKNOWN = 0,
     35     GPS     = 1,
     36     SBAS    = 2,
     37     GLONASS = 3,
     38     QZSS    = 4,
     39     BEIDOU  = 5,
     40     GALILEO = 6,
     41 };
     42 
     43 /** Bit mask to indicate which values are valid in a GnssLocation object. */
     44 @export(name="", value_prefix="GPS_LOCATION_")
     45 enum GnssLocationFlags : uint16_t {
     46     /** GnssLocation has valid latitude and longitude. */
     47     HAS_LAT_LONG              = 0x0001,
     48     /** GnssLocation has valid altitude. */
     49     HAS_ALTITUDE              = 0x0002,
     50     /** GnssLocation has valid speed. */
     51     HAS_SPEED                 = 0x0004,
     52     /** GnssLocation has valid bearing. */
     53     HAS_BEARING               = 0x0008,
     54     /** GpsLocation has valid horizontal accuracy. */
     55     HAS_HORIZONTAL_ACCURACY   = 0x0010,
     56     /** GpsLocation has valid vertical accuracy. */
     57     HAS_VERTICAL_ACCURACY     = 0x0020,
     58     /** GpsLocation has valid speed accuracy. */
     59     HAS_SPEED_ACCURACY        = 0x0040,
     60     /** GpsLocation has valid bearing accuracy. */
     61     HAS_BEARING_ACCURACY      = 0x0080
     62 };
     63 
     64 /** Represents a location. */
     65 struct GnssLocation {
     66     /** Contains GnssLocationFlags bits. */
     67     bitfield<GnssLocationFlags> gnssLocationFlags;
     68 
     69     /** Represents latitude in degrees. */
     70     double latitudeDegrees;
     71 
     72     /** Represents longitude in degrees. */
     73     double longitudeDegrees;
     74 
     75     /**
     76      * Represents altitude in meters above the WGS 84 reference ellipsoid.
     77      */
     78     double altitudeMeters;
     79 
     80     /** Represents speed in meters per second. */
     81     float speedMetersPerSec;
     82 
     83     /** Represents heading in degrees. */
     84     float bearingDegrees;
     85 
     86     /**
     87     * Represents expected horizontal position accuracy, radial, in meters
     88     * (68% confidence).
     89     */
     90     float horizontalAccuracyMeters;
     91 
     92     /**
     93     * Represents expected vertical position accuracy in meters
     94     * (68% confidence).
     95     */
     96     float verticalAccuracyMeters;
     97 
     98     /**
     99     * Represents expected speed accuracy in meter per seconds
    100     * (68% confidence).
    101     */
    102     float speedAccuracyMetersPerSecond;
    103 
    104     /**
    105     * Represents expected bearing accuracy in degrees
    106     * (68% confidence).
    107     */
    108     float bearingAccuracyDegrees;
    109 
    110     /** Timestamp for the location fix. */
    111     GnssUtcTime timestamp;
    112 };
    113