content: /*
   * Copyright (C) 2014 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License
   */
  
  package android.location;
  
  import android.annotation.IntDef;
  import android.annotation.NonNull;
  import android.annotation.TestApi;
  import android.os.Parcel;
  import android.os.Parcelable;
  
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  
  /**
   * A class representing a GNSS satellite measurement, containing raw and computed information.
   */
  public final class GnssMeasurement implements Parcelable {
      private int mFlags;
      private int mSvid;
      private int mConstellationType;
      private double mTimeOffsetNanos;
      private int mState;
      private long mReceivedSvTimeNanos;
      private long mReceivedSvTimeUncertaintyNanos;
      private double mCn0DbHz;
      private double mPseudorangeRateMetersPerSecond;
      private double mPseudorangeRateUncertaintyMetersPerSecond;
      private int mAccumulatedDeltaRangeState;
      private double mAccumulatedDeltaRangeMeters;
      private double mAccumulatedDeltaRangeUncertaintyMeters;
      private float mCarrierFrequencyHz;
      private long mCarrierCycles;
      private double mCarrierPhase;
      private double mCarrierPhaseUncertainty;
      private int mMultipathIndicator;
      private double mSnrInDb;
      private double mAutomaticGainControlLevelInDb;
      @NonNull private String mCodeType;
  
      // The following enumerations must be in sync with the values declared in gps.h
  
      private static final int HAS_NO_FLAGS = 0;
      private static final int HAS_SNR = (1<<0);
      private static final int HAS_CARRIER_FREQUENCY = (1<<9);
      private static final int HAS_CARRIER_CYCLES = (1<<10);
      private static final int HAS_CARRIER_PHASE = (1<<11);
      private static final int HAS_CARRIER_PHASE_UNCERTAINTY = (1<<12);
      private static final int HAS_AUTOMATIC_GAIN_CONTROL = (1<<13);
      private static final int HAS_CODE_TYPE = (1 << 14);
  
      /**
       * The status of the multipath indicator.
       * @hide
       */
      @Retention(RetentionPolicy.SOURCE)
      @IntDef({MULTIPATH_INDICATOR_UNKNOWN, MULTIPATH_INDICATOR_DETECTED,
              MULTIPATH_INDICATOR_NOT_DETECTED})
      public @interface MultipathIndicator {}
  
      /**
       * The indicator is not available or the presence or absence of multipath is unknown.
       */
      public static final int MULTIPATH_INDICATOR_UNKNOWN = 0;
  
      /**
       * The measurement shows signs of multi-path.
       */
      public static final int MULTIPATH_INDICATOR_DETECTED = 1;
  
      /**
       * The measurement shows no signs of multi-path.
       */
      public static final int MULTIPATH_INDICATOR_NOT_DETECTED = 2;
  
      /**
       * GNSS measurement tracking loop state
       * @hide
       */
      @IntDef(flag = true, prefix = { "STATE_" }, value = {
              STATE_CODE_LOCK, STATE_BIT_SYNC, STATE_SUBFRAME_SYNC,
              STATE_TOW_DECODED, STATE_MSEC_AMBIGUOUS, STATE_SYMBOL_SYNC, STATE_GLO_STRING_SYNC,
              STATE_GLO_TOD_DECODED, STATE_BDS_D2_BIT_SYNC, STATE_BDS_D2_SUBFRAME_SYNC,
              STATE_GAL_E1BC_CODE_LOCK, STATE_GAL_E1C_2ND_CODE_LOCK, STATE_GAL_E1B_PAGE_SYNC,
              STATE_SBAS_SYNC, STATE_TOW_KNOWN, STATE_GLO_TOD_KNOWN, STATE_2ND_CODE_LOCK
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface State {}
  
      /** This GNSS measurement's tracking state is invalid or unknown. */
      public static final int STATE_UNKNOWN = 0;
      /** This GNSS measurement's tracking state has code lock. */
      public static final int STATE_CODE_LOCK = (1<<0);
      /** This GNSS measurement's tracking state has bit sync. */
      public static final int STATE_BIT_SYNC = (1<<1);
      /** This GNSS measurement's tracking state has sub-frame sync. */
      public static final int STATE_SUBFRAME_SYNC = (1<<2);
      /** This GNSS measurement's tracking state has time-of-week decoded. */
      public static final int STATE_TOW_DECODED = (1<<3);
      /** This GNSS measurement's tracking state contains millisecond ambiguity. */
      public static final int STATE_MSEC_AMBIGUOUS = (1<<4);
      /** This GNSS measurement's tracking state has symbol sync. */
      public static final int STATE_SYMBOL_SYNC = (1<<5);
      /** This Glonass measurement's tracking state has string sync. */
      public static final int STATE_GLO_STRING_SYNC = (1<<6);
      /** This Glonass measurement's tracking state has time-of-day decoded. */
      public static final int STATE_GLO_TOD_DECODED = (1<<7);
      /** This Beidou measurement's tracking state has D2 bit sync. */
      public static final int STATE_BDS_D2_BIT_SYNC = (1<<8);
      /** This Beidou measurement's tracking state has D2 sub-frame sync. */
      public static final int STATE_BDS_D2_SUBFRAME_SYNC = (1<<9);
      /** This Galileo measurement's tracking state has E1B/C code lock. */
      public static final int STATE_GAL_E1BC_CODE_LOCK = (1<<10);
      /** This Galileo measurement's tracking state has E1C secondary code lock. */
      public static final int STATE_GAL_E1C_2ND_CODE_LOCK = (1<<11);
      /** This Galileo measurement's tracking state has E1B page sync. */
      public static final int STATE_GAL_E1B_PAGE_SYNC = (1<<12);
      /** This SBAS measurement's tracking state has whole second level sync. */
      public static final int STATE_SBAS_SYNC = (1<<13);
      /**
       * This GNSS measurement's tracking state has time-of-week known, possibly not decoded
       * over the air but has been determined from other sources. If TOW decoded is set then TOW Known
       * will also be set.
       */
      public static final int STATE_TOW_KNOWN = (1<<14);
      /**
       * This Glonass measurement's tracking state has time-of-day known, possibly not decoded
       * over the air but has been determined from other sources. If TOD decoded is set then TOD Known
       * will also be set.
       */
      public static final int STATE_GLO_TOD_KNOWN = (1<<15);
  
      /** This GNSS measurement's tracking state has secondary code lock. */
      public static final int STATE_2ND_CODE_LOCK  = (1 << 16);
  
      /**
       * All the GNSS receiver state flags, for bit masking purposes (not a sensible state for any
       * individual measurement.)
       */
      private static final int STATE_ALL = 0x3fff;  // 2 bits + 4 bits + 4 bits + 4 bits = 14 bits
  
      /**
       * GNSS measurement accumulated delta range state
       * @hide
       */
      @IntDef(flag = true, prefix = { "ADR_STATE_" }, value = {
              ADR_STATE_VALID, ADR_STATE_RESET, ADR_STATE_CYCLE_SLIP, ADR_STATE_HALF_CYCLE_RESOLVED,
              ADR_STATE_HALF_CYCLE_REPORTED
      })
      @Retention(RetentionPolicy.SOURCE)
      public @interface AdrState {}
  
      /**
       * The state of the value {@link #getAccumulatedDeltaRangeMeters()} is invalid or unknown.
       */
      public static final int ADR_STATE_UNKNOWN = 0;
  
      /**
       * The state of the {@link #getAccumulatedDeltaRangeMeters()} is valid.
       */
      public static final int ADR_STATE_VALID = (1<<0);
  
      /**
       * The state of the {@link #getAccumulatedDeltaRangeMeters()} has detected a reset.
       */
      public static final int ADR_STATE_RESET = (1<<1);
  
      /**
       * The state of the {@link #getAccumulatedDeltaRangeMeters()} has a cycle slip detected.
       */
      public static final int ADR_STATE_CYCLE_SLIP = (1<<2);
  
      /**
       * Reports whether the value {@link #getAccumulatedDeltaRangeMeters()} has resolved the half
       * cycle ambiguity.
       *
       * <p> When this bit is set, the {@link #getAccumulatedDeltaRangeMeters()} corresponds to the
       * carrier phase measurement plus an accumulated integer number of carrier full cycles.
       *
       * <p> When this bit is unset, the {@link #getAccumulatedDeltaRangeMeters()} corresponds to the
       * carrier phase measurement plus an accumulated integer number of carrier half cycles.
       */
      public static final int ADR_STATE_HALF_CYCLE_RESOLVED = (1<<3);
  
      /**
       * Reports whether the flag {@link #ADR_STATE_HALF_CYCLE_RESOLVED} has been reported by the
       * GNSS hardware.
       *
       * <p> When this bit is set, the value of {@link #getAccumulatedDeltaRangeUncertaintyMeters()}
       * can be low (centimeter level) whether or not the half cycle ambiguity is resolved.
       *
       * <p> When this bit is unset, the value of {@link #getAccumulatedDeltaRangeUncertaintyMeters()}
       * is larger, to cover the potential error due to half cycle ambiguity being unresolved.
       */
      public static final int ADR_STATE_HALF_CYCLE_REPORTED = (1<<4);
  
      /**
       * All the 'Accumulated Delta Range' flags.
       * @hide
       */
      @TestApi
      public static final int ADR_STATE_ALL =
              ADR_STATE_VALID | ADR_STATE_RESET | ADR_STATE_CYCLE_SLIP |
              ADR_STATE_HALF_CYCLE_RESOLVED | ADR_STATE_HALF_CYCLE_REPORTED;
  
      // End enumerations in sync with gps.h
  
      /**
       * @hide
       */
      @TestApi
      public GnssMeasurement() {
          initialize();
      }
  
      /**
       * Sets all contents to the values stored in the provided object.
       * @hide
       */
      @TestApi
      public void set(GnssMeasurement measurement) {
          mFlags = measurement.mFlags;
          mSvid = measurement.mSvid;
          mConstellationType = measurement.mConstellationType;
          mTimeOffsetNanos = measurement.mTimeOffsetNanos;
          mState = measurement.mState;
          mReceivedSvTimeNanos = measurement.mReceivedSvTimeNanos;
          mReceivedSvTimeUncertaintyNanos = measurement.mReceivedSvTimeUncertaintyNanos;
          mCn0DbHz = measurement.mCn0DbHz;
          mPseudorangeRateMetersPerSecond = measurement.mPseudorangeRateMetersPerSecond;
          mPseudorangeRateUncertaintyMetersPerSecond =
                  measurement.mPseudorangeRateUncertaintyMetersPerSecond;
          mAccumulatedDeltaRangeState = measurement.mAccumulatedDeltaRangeState;
          mAccumulatedDeltaRangeMeters = measurement.mAccumulatedDeltaRangeMeters;
          mAccumulatedDeltaRangeUncertaintyMeters =
                  measurement.mAccumulatedDeltaRangeUncertaintyMeters;
          mCarrierFrequencyHz = measurement.mCarrierFrequencyHz;
          mCarrierCycles = measurement.mCarrierCycles;
          mCarrierPhase = measurement.mCarrierPhase;
          mCarrierPhaseUncertainty = measurement.mCarrierPhaseUncertainty;
          mMultipathIndicator = measurement.mMultipathIndicator;
          mSnrInDb = measurement.mSnrInDb;
          mAutomaticGainControlLevelInDb = measurement.mAutomaticGainControlLevelInDb;
          mCodeType = measurement.mCodeType;
      }
  
      /**
       * Resets all the contents to its original state.
       * @hide
       */
      @TestApi
      public void reset() {
          initialize();
      }
  
      /**
       * Gets the satellite ID.
       *
       * <p>Interpretation depends on {@link #getConstellationType()}.
       * See {@link GnssStatus#getSvid(int)}.
       */
      public int getSvid() {
          return mSvid;
      }
  
      /**
       * Sets the Satellite ID.
       * @hide
       */
      @TestApi
      public void setSvid(int value) {
          mSvid = value;
      }
  
      /**
       * Gets the constellation type.
       *
       * <p>The return value is one of those constants with {@code CONSTELLATION_} prefix in
       * {@link GnssStatus}.
       */
      @GnssStatus.ConstellationType
      public int getConstellationType() {
          return mConstellationType;
      }
  
      /**
       * Sets the constellation type.
       * @hide
       */
      @TestApi
      public void setConstellationType(@GnssStatus.ConstellationType int value) {
          mConstellationType = value;
      }
  
      /**
       * Gets the time offset at which the measurement was taken in nanoseconds.
       *
       * <p>The reference receiver's time from which this is offset is specified by
       * {@link GnssClock#getTimeNanos()}.
       *
       * <p>The sign of this value is given by the following equation:
       * <pre>
       *      measurement time = TimeNanos + TimeOffsetNanos</pre>
       *
       * <p>The value provides an individual time-stamp for the measurement, and allows sub-nanosecond
       * accuracy.
       */
      public double getTimeOffsetNanos() {
          return mTimeOffsetNanos;
      }
  
      /**
       * Sets the time offset at which the measurement was taken in nanoseconds.
       * @hide
       */
      @TestApi
      public void setTimeOffsetNanos(double value) {
          mTimeOffsetNanos = value;
      }
  
      /**
       * Gets per-satellite sync state.
       *
       * <p>It represents the current sync state for the associated satellite.
       *
       * <p>This value helps interpret {@link #getReceivedSvTimeNanos()}.
       */
      @State
      public int getState() {
          return mState;
      }
  
      /**
       * Sets the sync state.
       * @hide
       */
      @TestApi
      public void setState(@State int value) {
          mState = value;
      }
  
      /**
       * Gets a string representation of the 'sync state'.
       *
       * <p>For internal and logging use only.
       */
      private String getStateString() {
          if (mState == STATE_UNKNOWN) {
              return "Unknown";
          }
  
          StringBuilder builder = new StringBuilder();
          if ((mState & STATE_CODE_LOCK) != 0) {
              builder.append("CodeLock|");
          }
          if ((mState & STATE_BIT_SYNC) != 0) {
              builder.append("BitSync|");
          }
          if ((mState & STATE_SUBFRAME_SYNC) != 0) {
              builder.append("SubframeSync|");
          }
          if ((mState & STATE_TOW_DECODED) != 0) {
              builder.append("TowDecoded|");
          }
          if ((mState & STATE_TOW_KNOWN) != 0) {
            builder.append("TowKnown|");
          }
          if ((mState & STATE_MSEC_AMBIGUOUS) != 0) {
              builder.append("MsecAmbiguous|");
          }
          if ((mState & STATE_SYMBOL_SYNC) != 0) {
              builder.append("SymbolSync|");
          }
          if ((mState & STATE_GLO_STRING_SYNC) != 0) {
              builder.append("GloStringSync|");
          }
          if ((mState & STATE_GLO_TOD_DECODED) != 0) {
              builder.append("GloTodDecoded|");
          }
          if ((mState & STATE_GLO_TOD_KNOWN) != 0) {
            builder.append("GloTodKnown|");
          }
          if ((mState & STATE_BDS_D2_BIT_SYNC) != 0) {
              builder.append("BdsD2BitSync|");
          }
          if ((mState & STATE_BDS_D2_SUBFRAME_SYNC) != 0) {
              builder.append("BdsD2SubframeSync|");
          }
          if ((mState & STATE_GAL_E1BC_CODE_LOCK) != 0) {
              builder.append("GalE1bcCodeLock|");
          }
          if ((mState & STATE_GAL_E1C_2ND_CODE_LOCK) != 0) {
              builder.append("E1c2ndCodeLock|");
          }
          if ((mState & STATE_GAL_E1B_PAGE_SYNC) != 0) {
              builder.append("GalE1bPageSync|");
          }
          if ((mState & STATE_SBAS_SYNC) != 0) {
              builder.append("SbasSync|");
          }
          if ((mState & STATE_2ND_CODE_LOCK) != 0) {
              builder.append("2ndCodeLock|");
          }
  
          int remainingStates = mState & ~STATE_ALL;
          if (remainingStates > 0) {
              builder.append("Other(");
              builder.append(Integer.toBinaryString(remainingStates));
              builder.append(")|");
          }
          builder.setLength(builder.length() - 1);
          return builder.toString();
      }
  
      /**
       * Gets the received GNSS satellite time, at the measurement time, in nanoseconds.
       *
       * <p>The received satellite time is relative to the beginning of the system week for all
       * constellations except for Glonass where it is relative to the beginning of the Glonass
       * system day.
       *
       * <p>The table below indicates the valid range of the received GNSS satellite time. These
       * ranges depend on the constellation and code being tracked and the state of the tracking
       * algorithms given by the {@link #getState} method. The minimum value of this field is zero.
       * The maximum value of this field is determined by looking across all of the state flags
       * that are set, for the given constellation and code type, and finding the the maximum value
       * in this table.
       *
       * <p>For example, for GPS L1 C/A, if STATE_TOW_KNOWN is set, this field can be any value from 0
       * to 1 week (in nanoseconds), and for GAL E1B code, if only STATE_GAL_E1BC_CODE_LOCK is set,
       * then this field can be any value from 0 to 4 milliseconds (in nanoseconds.)
       *
       * <table border="1">
       *   <thead>
       *     <tr>
       *       <td />
       *       <td colspan="3"><strong>GPS/QZSS</strong></td>
       *       <td><strong>GLNS</strong></td>
       *       <td colspan="2"><strong>BDS</strong></td>
       *       <td colspan="3"><strong>GAL</strong></td>
       *       <td><strong>SBAS</strong></td>
       *     </tr>
       *     <tr>
       *       <td><strong>State Flag</strong></td>
       *       <td><strong>L1 C/A</strong></td>
       *       <td><strong>L5I</strong></td>
       *       <td><strong>L5Q</strong></td>
       *       <td><strong>L1OF</strong></td>
       *       <td><strong>B1I (D1)</strong></td>
       *       <td><strong>B1I &nbsp;(D2)</strong></td>
       *       <td><strong>E1B</strong></td>
       *       <td><strong>E1C</strong></td>
       *       <td><strong>E5AQ</strong></td>
       *       <td><strong>L1 C/A</strong></td>
       *     </tr>
       *   </thead>
       *   <tbody>
       *     <tr>
       *       <td>
       *         <strong>STATE_UNKNOWN</strong>
       *       </td>
       *       <td>0</td>
       *       <td>0</td>
       *       <td>0</td>
       *       <td>0</td>
       *       <td>0</td>
       *       <td>0</td>
       *       <td>0</td>
       *       <td>0</td>
       *       <td>0</td>
       *       <td>0</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_CODE_LOCK</strong>
       *       </td>
       *       <td>1 ms</td>
       *       <td>1 ms</td>
       *       <td>1 ms</td>
       *       <td>1 ms</td>
       *       <td>1 ms</td>
       *       <td>1 ms</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>1 ms</td>
       *       <td>1 ms</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_SYMBOL_SYNC</strong>
       *       </td>
       *       <td>20 ms (optional)</td>
       *       <td>10 ms</td>
       *       <td>1 ms (optional)</td>
       *       <td>10 ms</td>
       *       <td>20 ms (optional)</td>
       *       <td>2 ms</td>
       *       <td>4 ms (optional)</td>
       *       <td>4 ms (optional)</td>
       *       <td>1 ms (optional)</td>
       *       <td>2 ms</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_BIT_SYNC</strong>
       *       </td>
       *       <td>20 ms</td>
       *       <td>20 ms</td>
       *       <td>1 ms (optional)</td>
       *       <td>20 ms</td>
       *       <td>20 ms</td>
       *       <td>-</td>
       *       <td>8 ms</td>
       *       <td>-</td>
       *       <td>1 ms (optional)</td>
       *       <td>4 ms</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_SUBFRAME_SYNC</strong>
       *       </td>
       *       <td>6s</td>
       *       <td>6s</td>
       *       <td>-</td>
       *       <td>2 s</td>
       *       <td>6 s</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>100 ms</td>
       *       <td>-</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_TOW_DECODED</strong>
       *       </td>
       *       <td colspan="2">1 week</td>
       *       <td>-</td>
       *       <td>1 day</td>
       *       <td colspan="2">1 week</td>
       *       <td colspan="2">1 week</td>
       *       <td>-</td>
       *       <td>1 week</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_TOW_KNOWN</strong>
       *       </td>
       *       <td colspan="3">1 week</td>
       *       <td>1 day</td>
       *       <td colspan="2">1 week</td>
       *       <td colspan="3">1 week</td>
       *       <td>1 week</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_GLO_STRING_SYNC</strong>
       *       </td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>2 s</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_GLO_TOD_DECODED</strong>
       *       </td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>1 day</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_GLO_TOD_KNOWN</strong>
       *       </td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>1 day</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_BDS_D2_BIT_SYNC</strong>
       *       </td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>2 ms</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_BDS_D2_SUBFRAME_SYNC</strong>
       *       </td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>600 ms</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_GAL_E1BC_CODE_LOCK</strong>
       *       </td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>4 ms</td>
       *       <td>4 ms</td>
       *       <td>-</td>
       *       <td>-</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_GAL_E1C_2ND_CODE_LOCK</strong>
       *       </td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>100 ms</td>
       *       <td>-</td>
       *       <td>-</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_2ND_CODE_LOCK</strong>
       *       </td>
       *       <td>-</td>
       *       <td>10 ms (optional)</td>
       *       <td>20 ms</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>100 ms (optional)</td>
       *       <td>100 ms</td>
       *       <td>-</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_GAL_E1B_PAGE_SYNC</strong>
       *       </td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>2 s</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *     </tr>
       *     <tr>
       *       <td>
       *         <strong>STATE_SBAS_SYNC</strong>
       *       </td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>-</td>
       *       <td>1 s</td>
       *     </tr>
       *   </tbody>
       * </table>
       *
       * <p>Note: TOW Known refers to the case where TOW is possibly not decoded over the air but has
       * been determined from other sources. If TOW decoded is set then TOW Known must also be set.
       *
       * <p>Note well: if there is any ambiguity in integer millisecond, STATE_MSEC_AMBIGUOUS must be
       * set accordingly, in the 'state' field. This value must be populated, unless the 'state' ==
       * STATE_UNKNOWN.
       *
       * <p>Note on optional flags:
       * <ul>
       *     <li> For L1 C/A and B1I, STATE_SYMBOL_SYNC is optional since the symbol length is the
       *     same as the bit length.
       *     <li> For L5Q and E5aQ, STATE_BIT_SYNC and STATE_SYMBOL_SYNC are optional since they are
       *     implied by STATE_CODE_LOCK.
       *     <li> STATE_2ND_CODE_LOCK for L5I is optional since it is implied by STATE_SYMBOL_SYNC.
       *     <li> STATE_2ND_CODE_LOCK for E1C is optional since it is implied by
       *     STATE_GAL_E1C_2ND_CODE_LOCK.
       *     <li> For E1B and E1C, STATE_SYMBOL_SYNC is optional, because it is implied by
       *     STATE_GAL_E1BC_CODE_LOCK.
       * </ul>
       */
      public long getReceivedSvTimeNanos() {
          return mReceivedSvTimeNanos;
      }
  
      /**
       * Sets the received GNSS time in nanoseconds.
       * @hide
       */
      @TestApi
      public void setReceivedSvTimeNanos(long value) {
          mReceivedSvTimeNanos = value;
      }
  
      /**
       * Gets the error estimate (1-sigma) for the received GNSS time, in nanoseconds.
       */
      public long getReceivedSvTimeUncertaintyNanos() {
          return mReceivedSvTimeUncertaintyNanos;
      }
  
      /**
       * Sets the received GNSS time uncertainty (1-Sigma) in nanoseconds.
       * @hide
       */
      @TestApi
      public void setReceivedSvTimeUncertaintyNanos(long value) {
          mReceivedSvTimeUncertaintyNanos = value;
      }
  
      /**
       * Gets the Carrier-to-noise density in dB-Hz.
       *
       * <p>Typical range: 10-50 db-Hz.
       *
       * <p>The value contains the measured C/N0 for the signal at the antenna input.
       */
      public double getCn0DbHz() {
          return mCn0DbHz;
      }
  
      /**
       * Sets the carrier-to-noise density in dB-Hz.
       * @hide
       */
      @TestApi
      public void setCn0DbHz(double value) {
          mCn0DbHz = value;
      }
  
      /**
       * Gets the Pseudorange rate at the timestamp in m/s.
       *
       * <p>The error estimate for this value is
       * {@link #getPseudorangeRateUncertaintyMetersPerSecond()}.
       *
       * <p>The value is uncorrected, i.e. corrections for receiver and satellite clock frequency
       * errors are not included.
       *
       * <p>A positive 'uncorrected' value indicates that the SV is moving away from the receiver. The
       * sign of the 'uncorrected' 'pseudorange rate' and its relation to the sign of 'doppler shift'
       * is given by the equation:
       *
       * <pre>
       *      pseudorange rate = -k * doppler shift   (where k is a constant)</pre>
       */
      public double getPseudorangeRateMetersPerSecond() {
          return mPseudorangeRateMetersPerSecond;
      }
  
      /**
       * Sets the pseudorange rate at the timestamp in m/s.
       * @hide
       */
      @TestApi
      public void setPseudorangeRateMetersPerSecond(double value) {
          mPseudorangeRateMetersPerSecond = value;
      }
  
      /**
       * Gets the pseudorange's rate uncertainty (1-Sigma) in m/s.
       *
       * <p>The uncertainty is represented as an absolute (single sided) value.
       */
      public double getPseudorangeRateUncertaintyMetersPerSecond() {
          return mPseudorangeRateUncertaintyMetersPerSecond;
      }
  
      /**
       * Sets the pseudorange's rate uncertainty (1-Sigma) in m/s.
       * @hide
       */
      @TestApi
      public void setPseudorangeRateUncertaintyMetersPerSecond(double value) {
          mPseudorangeRateUncertaintyMetersPerSecond = value;
      }
  
      /**
       * Gets 'Accumulated Delta Range' state.
       *
       * <p>It indicates whether {@link #getAccumulatedDeltaRangeMeters()} is reset or there is a
       * cycle slip (indicating 'loss of lock').
       */
      @AdrState
      public int getAccumulatedDeltaRangeState() {
          return mAccumulatedDeltaRangeState;
      }
  
      /**
       * Sets the 'Accumulated Delta Range' state.
       * @hide
       */
      @TestApi
      public void setAccumulatedDeltaRangeState(@AdrState int value) {
          mAccumulatedDeltaRangeState = value;
      }
  
      /**
       * Gets a string representation of the 'Accumulated Delta Range state'.
       *
       * <p>For internal and logging use only.
       */
      private String getAccumulatedDeltaRangeStateString() {
          if (mAccumulatedDeltaRangeState == ADR_STATE_UNKNOWN) {
              return "Unknown";
          }
          StringBuilder builder = new StringBuilder();
          if ((mAccumulatedDeltaRangeState & ADR_STATE_VALID) == ADR_STATE_VALID) {
              builder.append("Valid|");
          }
          if ((mAccumulatedDeltaRangeState & ADR_STATE_RESET) == ADR_STATE_RESET) {
              builder.append("Reset|");
          }
          if ((mAccumulatedDeltaRangeState & ADR_STATE_CYCLE_SLIP) == ADR_STATE_CYCLE_SLIP) {
              builder.append("CycleSlip|");
          }
          if ((mAccumulatedDeltaRangeState & ADR_STATE_HALF_CYCLE_RESOLVED) ==
                  ADR_STATE_HALF_CYCLE_RESOLVED) {
              builder.append("HalfCycleResolved|");
          }
          if ((mAccumulatedDeltaRangeState & ADR_STATE_HALF_CYCLE_REPORTED)
                  == ADR_STATE_HALF_CYCLE_REPORTED) {
              builder.append("HalfCycleReported|");
          }
          int remainingStates = mAccumulatedDeltaRangeState & ~ADR_STATE_ALL;
          if (remainingStates > 0) {
              builder.append("Other(");
              builder.append(Integer.toBinaryString(remainingStates));
              builder.append(")|");
          }
          builder.deleteCharAt(builder.length() - 1);
          return builder.toString();
      }
  
      /**
       * Gets the accumulated delta range since the last channel reset, in meters.
       *
       * <p>The error estimate for this value is {@link #getAccumulatedDeltaRangeUncertaintyMeters()}.
       *
       * <p>The availability of the value is represented by {@link #getAccumulatedDeltaRangeState()}.
       *
       * <p>A positive value indicates that the SV is moving away from the receiver.
       * The sign of {@link #getAccumulatedDeltaRangeMeters()} and its relation to the sign of
       * {@link #getCarrierPhase()} is given by the equation:
       *
       * <pre>
       *          accumulated delta range = -k * carrier phase    (where k is a constant)</pre>
       *
       * <p>Similar to the concept of an RTCM "Phaserange", when the accumulated delta range is
       * initially chosen, and whenever it is reset, it will retain the integer nature
       * of the relative carrier phase offset between satellites observed by this receiver, such that
       * the double difference of this value between receivers and satellites may be used, together
       * with integer ambiguity resolution, to determine highly precise relative location between
       * receivers.
       *
       * <p>This includes ensuring that all half-cycle ambiguities are resolved before this value is
       * reported as {@link #ADR_STATE_VALID}.
       *
       * <p>The alignment of the phase measurement will not be adjusted by the receiver so the
       * in-phase and quadrature phase components will have a quarter cycle offset as they do when
       * transmitted from the satellites. If the measurement is from a combination of the in-phase
       * and quadrature phase components, then the alignment of the phase measurement will be aligned
       * to the in-phase component.
       */
      public double getAccumulatedDeltaRangeMeters() {
          return mAccumulatedDeltaRangeMeters;
      }
  
      /**
       * Sets the accumulated delta range in meters.
       * @hide
       */
      @TestApi
      public void setAccumulatedDeltaRangeMeters(double value) {
          mAccumulatedDeltaRangeMeters = value;
      }
  
      /**
       * Gets the accumulated delta range's uncertainty (1-Sigma) in meters.
       *
       * <p>The uncertainty is represented as an absolute (single sided) value.
       *
       * <p>The status of the value is represented by {@link #getAccumulatedDeltaRangeState()}.
       */
      public double getAccumulatedDeltaRangeUncertaintyMeters() {
          return mAccumulatedDeltaRangeUncertaintyMeters;
      }
  
      /**
       * Sets the accumulated delta range's uncertainty (1-sigma) in meters.
       *
       * <p>The status of the value is represented by {@link #getAccumulatedDeltaRangeState()}.
       *
       * @hide
       */
      @TestApi
      public void setAccumulatedDeltaRangeUncertaintyMeters(double value) {
          mAccumulatedDeltaRangeUncertaintyMeters = value;
      }
  
      /**
       * Returns {@code true} if {@link #getCarrierFrequencyHz()} is available, {@code false}
       * otherwise.
       */
      public boolean hasCarrierFrequencyHz() {
          return isFlagSet(HAS_CARRIER_FREQUENCY);
      }
  
      /**
       * Gets the carrier frequency of the tracked signal.
       *
       * <p>For example it can be the GPS central frequency for L1 = 1575.45 MHz, or L2 = 1227.60 MHz,
       * L5 = 1176.45 MHz, varying GLO channels, etc. If the field is not set, it is the primary
       * common use central frequency, e.g. L1 = 1575.45 MHz for GPS.
       *
       * <p> For an L1, L5 receiver tracking a satellite on L1 and L5 at the same time, two raw
       * measurement objects will be reported for this same satellite, in one of the measurement
       * objects, all the values related to L1 will be filled, and in the other all of the values
       * related to L5 will be filled.
       *
       * <p>The value is only available if {@link #hasCarrierFrequencyHz()} is {@code true}.
       *
       * @return the carrier frequency of the signal tracked in Hz.
       */
      public float getCarrierFrequencyHz() {
          return mCarrierFrequencyHz;
      }
  
      /**
       * Sets the Carrier frequency in Hz.
       * @hide
       */
      @TestApi
      public void setCarrierFrequencyHz(float carrierFrequencyHz) {
          setFlag(HAS_CARRIER_FREQUENCY);
          mCarrierFrequencyHz = carrierFrequencyHz;
      }
  
      /**
       * Resets the Carrier frequency in Hz.
       * @hide
       */
      @TestApi
      public void resetCarrierFrequencyHz() {
          resetFlag(HAS_CARRIER_FREQUENCY);
          mCarrierFrequencyHz = Float.NaN;
      }
  
      /**
       * Returns {@code true} if {@link #getCarrierCycles()} is available, {@code false} otherwise.
       * 
       * @deprecated use {@link #getAccumulatedDeltaRangeState()} instead.
       */
      @Deprecated
      public boolean hasCarrierCycles() {
          return isFlagSet(HAS_CARRIER_CYCLES);
      }
  
      /**
       * The number of full carrier cycles between the satellite and the receiver.
       *
       * <p>The reference frequency is given by the value of {@link #getCarrierFrequencyHz()}.
       *
       * <p>The value is only available if {@link #hasCarrierCycles()} is {@code true}.
       *
       * @deprecated use {@link #getAccumulatedDeltaRangeMeters()} instead.
       */
      @Deprecated
      public long getCarrierCycles() {
          return mCarrierCycles;
      }
  
      /**
       * Sets the number of full carrier cycles between the satellite and the receiver.
       *
       * @deprecated use {@link #setAccumulatedDeltaRangeMeters(double)}
       * and {@link #setAccumulatedDeltaRangeState(int)} instead.
       * 
       * @hide
       */
      @TestApi
      @Deprecated
      public void setCarrierCycles(long value) {
          setFlag(HAS_CARRIER_CYCLES);
          mCarrierCycles = value;
      }
  
      /**
       * Resets the number of full carrier cycles between the satellite and the receiver.
       * 
       * @deprecated use {@link #setAccumulatedDeltaRangeMeters(double)}
       * and {@link #setAccumulatedDeltaRangeState(int)} instead.
       * @hide
       */
      @TestApi
      @Deprecated
      public void resetCarrierCycles() {
          resetFlag(HAS_CARRIER_CYCLES);
          mCarrierCycles = Long.MIN_VALUE;
      }
  
      /**
       * Returns {@code true} if {@link #getCarrierPhase()} is available, {@code false} otherwise.
       * 
       * @deprecated use {@link #getAccumulatedDeltaRangeState()} instead.
       */
      @Deprecated
      public boolean hasCarrierPhase() {
          return isFlagSet(HAS_CARRIER_PHASE);
      }
  
      /**
       * Gets the RF phase detected by the receiver.
       *
       * <p>Range: [0.0, 1.0].
       *
       * <p>This is the fractional part of the complete carrier phase measurement.
       *
       * <p>The reference frequency is given by the value of {@link #getCarrierFrequencyHz()}.
       *
       * <p>The error estimate for this value is {@link #getCarrierPhaseUncertainty()}.
       *
       * <p>The value is only available if {@link #hasCarrierPhase()} is {@code true}.
       *
       * @deprecated use {@link #getAccumulatedDeltaRangeMeters()} instead.
       */
      @Deprecated
      public double getCarrierPhase() {
          return mCarrierPhase;
      }
  
      /**
       * Sets the RF phase detected by the receiver.
       * 
       * @deprecated use {@link #setAccumulatedDeltaRangeMeters(double)}
       * and {@link #setAccumulatedDeltaRangeState(int)} instead.
       * 
       * @hide
       */
      @TestApi
      @Deprecated
      public void setCarrierPhase(double value) {
          setFlag(HAS_CARRIER_PHASE);
          mCarrierPhase = value;
      }
  
      /**
       * Resets the RF phase detected by the receiver.
       * 
       * @deprecated use {@link #setAccumulatedDeltaRangeMeters(double)}
       * and {@link #setAccumulatedDeltaRangeState(int)} instead.
       * 
       * @hide
       */
      @TestApi
      @Deprecated
      public void resetCarrierPhase() {
          resetFlag(HAS_CARRIER_PHASE);
          mCarrierPhase = Double.NaN;
      }
  
      /**
       * Returns {@code true} if {@link #getCarrierPhaseUncertainty()} is available, {@code false}
       * otherwise.
       * 
       * @deprecated use {@link #getAccumulatedDeltaRangeState()} instead.
       */
      @Deprecated
      public boolean hasCarrierPhaseUncertainty() {
          return isFlagSet(HAS_CARRIER_PHASE_UNCERTAINTY);
      }
  
      /**
       * Gets the carrier-phase's uncertainty (1-Sigma).
       *
       * <p>The uncertainty is represented as an absolute (single sided) value.
       *
       * <p>The value is only available if {@link #hasCarrierPhaseUncertainty()} is {@code true}.
       *
       * @deprecated use {@link #getAccumulatedDeltaRangeUncertaintyMeters()} instead.
       */
      @Deprecated
      public double getCarrierPhaseUncertainty() {
          return mCarrierPhaseUncertainty;
      }
  
      /**
       * Sets the Carrier-phase's uncertainty (1-Sigma) in cycles.
       * 
       * @deprecated use {@link #setAccumulatedDeltaRangeUncertaintyMeters(double)}
       * and {@link #setAccumulatedDeltaRangeState(int)} instead.
       * 
       * @hide
       */
      @TestApi
      @Deprecated
      public void setCarrierPhaseUncertainty(double value) {
          setFlag(HAS_CARRIER_PHASE_UNCERTAINTY);
          mCarrierPhaseUncertainty = value;
      }
  
      /**
       * Resets the Carrier-phase's uncertainty (1-Sigma) in cycles.
       * 
       * @deprecated use {@link #setAccumulatedDeltaRangeUncertaintyMeters(double)}
       * and {@link #setAccumulatedDeltaRangeState(int)} instead.
       * 
       * @hide
       */
      @TestApi
      @Deprecated
      public void resetCarrierPhaseUncertainty() {
          resetFlag(HAS_CARRIER_PHASE_UNCERTAINTY);
          mCarrierPhaseUncertainty = Double.NaN;
      }
  
      /**
       * Gets a value indicating the 'multipath' state of the event.
       */
      @MultipathIndicator
      public int getMultipathIndicator() {
          return mMultipathIndicator;
      }
  
      /**
       * Sets the 'multi-path' indicator.
       * @hide
       */
      @TestApi
      public void setMultipathIndicator(@MultipathIndicator int value) {
          mMultipathIndicator = value;
      }
  
      /**
       * Gets a string representation of the 'multi-path indicator'.
       *
       * <p>For internal and logging use only.
       */
      private String getMultipathIndicatorString() {
          switch (mMultipathIndicator) {
              case MULTIPATH_INDICATOR_UNKNOWN:
                  return "Unknown";
              case MULTIPATH_INDICATOR_DETECTED:
                  return "Detected";
              case MULTIPATH_INDICATOR_NOT_DETECTED:
                  return "NotDetected";
              default:
                  return "<Invalid: " + mMultipathIndicator + ">";
          }
      }
  
      /**
       * Returns {@code true} if {@link #getSnrInDb()} is available, {@code false} otherwise.
       */
      public boolean hasSnrInDb() {
          return isFlagSet(HAS_SNR);
      }
  
      /**
       * Gets the (post-correlation & integration) Signal-to-Noise ratio (SNR) in dB.
       *
       * <p>The value is only available if {@link #hasSnrInDb()} is {@code true}.
       */
      public double getSnrInDb() {
          return mSnrInDb;
      }
  
      /**
       * Sets the Signal-to-noise ratio (SNR) in dB.
       * @hide
       */
      @TestApi
      public void setSnrInDb(double snrInDb) {
          setFlag(HAS_SNR);
          mSnrInDb = snrInDb;
      }
  
      /**
       * Resets the Signal-to-noise ratio (SNR) in dB.
       * @hide
       */
      @TestApi
      public void resetSnrInDb() {
          resetFlag(HAS_SNR);
          mSnrInDb = Double.NaN;
      }
  
      /**
       * Returns {@code true} if {@link #getAutomaticGainControlLevelDb()} is available,
       * {@code false} otherwise.
       */
      public boolean hasAutomaticGainControlLevelDb() {
          return isFlagSet(HAS_AUTOMATIC_GAIN_CONTROL);
      }
  
      /**
       * Gets the Automatic Gain Control level in dB.
       *
       * <p> AGC acts as a variable gain amplifier adjusting the power of the incoming signal. The AGC
       * level may be used to indicate potential interference. When AGC is at a nominal level, this
       * value must be set as 0. Higher gain (and/or lower input power) shall be output as a positive
       * number. Hence in cases of strong jamming, in the band of this signal, this value will go more
       * negative.
       *
       * <p> Note: Different hardware designs (e.g. antenna, pre-amplification, or other RF HW
       * components) may also affect the typical output of of this value on any given hardware design
       * in an open sky test - the important aspect of this output is that changes in this value are
       * indicative of changes on input signal power in the frequency band for this measurement.
       *
       * <p> The value is only available if {@link #hasAutomaticGainControlLevelDb()} is {@code true}
       */
      public double getAutomaticGainControlLevelDb() {
          return mAutomaticGainControlLevelInDb;
      }
  
      /**
       * Sets the Automatic Gain Control level in dB.
       * @hide
       */
      @TestApi
      public void setAutomaticGainControlLevelInDb(double agcLevelDb) {
          setFlag(HAS_AUTOMATIC_GAIN_CONTROL);
          mAutomaticGainControlLevelInDb = agcLevelDb;
      }
  
      /**
       * Resets the Automatic Gain Control level.
       * @hide
       */
      @TestApi
      public void resetAutomaticGainControlLevel() {
          resetFlag(HAS_AUTOMATIC_GAIN_CONTROL);
          mAutomaticGainControlLevelInDb = Double.NaN;
      }
  
      /**
       * Returns {@code true} if {@link #getCodeType()} is available,
       * {@code false} otherwise.
       */
      public boolean hasCodeType() {
          return isFlagSet(HAS_CODE_TYPE);
      }
  
      /**
       * Gets the GNSS measurement's code type.
       *
       * <p>Similar to the Attribute field described in RINEX 3.03, e.g., in Tables 4-10, and Table
       * A2 at the RINEX 3.03 Update 1 Document.
       *
       * <p>Returns "A" for GALILEO E1A, GALILEO E6A, IRNSS L5A, IRNSS SA.
       *
       * <p>Returns "B" for GALILEO E1B, GALILEO E6B, IRNSS L5B, IRNSS SB.
       *
       * <p>Returns "C" for GPS L1 C/A,  GPS L2 C/A, GLONASS G1 C/A, GLONASS G2 C/A, GALILEO E1C,
       * GALILEO E6C, SBAS L1 C/A, QZSS L1 C/A, IRNSS L5C.
       *
       * <p>Returns "I" for GPS L5 I, GLONASS G3 I, GALILEO E5a I, GALILEO E5b I, GALILEO E5a+b I,
       * SBAS L5 I, QZSS L5 I, BDS B1 I, BDS B2 I, BDS B3 I.
       *
       * <p>Returns "L" for GPS L1C (P), GPS L2C (L), QZSS L1C (P), QZSS L2C (L), LEX(6) L.
       *
       * <p>Returns "M" for GPS L1M, GPS L2M.
       *
       * <p>Returns "N" for GPS L1 codeless, GPS L2 codeless.
       *
       * <p>Returns "P" for GPS L1P, GPS L2P, GLONASS G1P, GLONASS G2P.
       *
       * <p>Returns "Q" for GPS L5 Q, GLONASS G3 Q, GALILEO E5a Q, GALILEO E5b Q, GALILEO E5a+b Q,
       * SBAS L5 Q, QZSS L5 Q, BDS B1 Q, BDS B2 Q, BDS B3 Q.
       *
       * <p>Returns "S" for GPS L1C (D), GPS L2C (M), QZSS L1C (D), QZSS L2C (M), LEX(6) S.
       *
       * <p>Returns "W" for GPS L1 Z-tracking, GPS L2 Z-tracking.
       *
       * <p>Returns "X" for GPS L1C (D+P), GPS L2C (M+L), GPS L5 (I+Q), GLONASS G3 (I+Q), GALILEO
       * E1 (B+C), GALILEO E5a (I+Q), GALILEO E5b (I+Q), GALILEO E5a+b(I+Q), GALILEO E6 (B+C), SBAS
       * L5 (I+Q), QZSS L1C (D+P), QZSS L2C (M+L), QZSS L5 (I+Q), LEX(6) (S+L), BDS B1 (I+Q), BDS
       * B2 (I+Q), BDS B3 (I+Q), IRNSS L5 (B+C).
       *
       * <p>Returns "Y" for GPS L1Y, GPS L2Y.
       *
       * <p>Returns "Z" for GALILEO E1 (A+B+C), GALILEO E6 (A+B+C), QZSS L1-SAIF.
       *
       * <p>Returns "UNKNOWN" if the GNSS Measurement's code type is unknown.
       *
       * <p>This is used to specify the observation descriptor defined in GNSS Observation Data File
       * Header Section Description in the RINEX standard (Version 3.XX), in cases where the code type
       * does not align with the above listed values. For example, if a code type "G" is added, this
       * string shall be set to "G".
       */
      @NonNull
      public String getCodeType() {
          return mCodeType;
      }
  
      /**
       * Sets the GNSS measurement's code type.
       *
       * @hide
       */
      @TestApi
      public void setCodeType(@NonNull String codeType) {
          setFlag(HAS_CODE_TYPE);
          mCodeType = codeType;
      }
  
      /**
       * Resets the GNSS measurement's code type.
       *
       * @hide
       */
      @TestApi
      public void resetCodeType() {
          resetFlag(HAS_CODE_TYPE);
          mCodeType = "UNKNOWN";
      }
  
      public static final @android.annotation.NonNull Creator<GnssMeasurement> CREATOR = new Creator<GnssMeasurement>() {
          @Override
          public GnssMeasurement createFromParcel(Parcel parcel) {
              GnssMeasurement gnssMeasurement = new GnssMeasurement();
  
              gnssMeasurement.mFlags = parcel.readInt();
              gnssMeasurement.mSvid = parcel.readInt();
              gnssMeasurement.mConstellationType = parcel.readInt();
              gnssMeasurement.mTimeOffsetNanos = parcel.readDouble();
              gnssMeasurement.mState = parcel.readInt();
              gnssMeasurement.mReceivedSvTimeNanos = parcel.readLong();
              gnssMeasurement.mReceivedSvTimeUncertaintyNanos = parcel.readLong();
              gnssMeasurement.mCn0DbHz = parcel.readDouble();
              gnssMeasurement.mPseudorangeRateMetersPerSecond = parcel.readDouble();
              gnssMeasurement.mPseudorangeRateUncertaintyMetersPerSecond = parcel.readDouble();
              gnssMeasurement.mAccumulatedDeltaRangeState = parcel.readInt();
              gnssMeasurement.mAccumulatedDeltaRangeMeters = parcel.readDouble();
              gnssMeasurement.mAccumulatedDeltaRangeUncertaintyMeters = parcel.readDouble();
              gnssMeasurement.mCarrierFrequencyHz = parcel.readFloat();
              gnssMeasurement.mCarrierCycles = parcel.readLong();
              gnssMeasurement.mCarrierPhase = parcel.readDouble();
              gnssMeasurement.mCarrierPhaseUncertainty = parcel.readDouble();
              gnssMeasurement.mMultipathIndicator = parcel.readInt();
              gnssMeasurement.mSnrInDb = parcel.readDouble();
              gnssMeasurement.mAutomaticGainControlLevelInDb = parcel.readDouble();
              gnssMeasurement.mCodeType = parcel.readString();
  
              return gnssMeasurement;
          }
  
          @Override
          public GnssMeasurement[] newArray(int i) {
              return new GnssMeasurement[i];
          }
      };
  
      @Override
      public void writeToParcel(Parcel parcel, int flags) {
          parcel.writeInt(mFlags);
          parcel.writeInt(mSvid);
          parcel.writeInt(mConstellationType);
          parcel.writeDouble(mTimeOffsetNanos);
          parcel.writeInt(mState);
          parcel.writeLong(mReceivedSvTimeNanos);
          parcel.writeLong(mReceivedSvTimeUncertaintyNanos);
          parcel.writeDouble(mCn0DbHz);
          parcel.writeDouble(mPseudorangeRateMetersPerSecond);
          parcel.writeDouble(mPseudorangeRateUncertaintyMetersPerSecond);
          parcel.writeInt(mAccumulatedDeltaRangeState);
          parcel.writeDouble(mAccumulatedDeltaRangeMeters);
          parcel.writeDouble(mAccumulatedDeltaRangeUncertaintyMeters);
          parcel.writeFloat(mCarrierFrequencyHz);
          parcel.writeLong(mCarrierCycles);
          parcel.writeDouble(mCarrierPhase);
          parcel.writeDouble(mCarrierPhaseUncertainty);
          parcel.writeInt(mMultipathIndicator);
          parcel.writeDouble(mSnrInDb);
          parcel.writeDouble(mAutomaticGainControlLevelInDb);
          parcel.writeString(mCodeType);
      }
  
      @Override
      public int describeContents() {
          return 0;
      }
  
      @Override
      public String toString() {
          final String format = "   %-29s = %s\n";
          final String formatWithUncertainty = "   %-29s = %-25s   %-40s = %s\n";
          StringBuilder builder = new StringBuilder("GnssMeasurement:\n");
  
          builder.append(String.format(format, "Svid", mSvid));
          builder.append(String.format(format, "ConstellationType", mConstellationType));
          builder.append(String.format(format, "TimeOffsetNanos", mTimeOffsetNanos));
  
          builder.append(String.format(format, "State", getStateString()));
  
          builder.append(String.format(
                  formatWithUncertainty,
                  "ReceivedSvTimeNanos",
                  mReceivedSvTimeNanos,
                  "ReceivedSvTimeUncertaintyNanos",
                  mReceivedSvTimeUncertaintyNanos));
  
          builder.append(String.format(format, "Cn0DbHz", mCn0DbHz));
  
          builder.append(String.format(
                  formatWithUncertainty,
                  "PseudorangeRateMetersPerSecond",
                  mPseudorangeRateMetersPerSecond,
                  "PseudorangeRateUncertaintyMetersPerSecond",
                  mPseudorangeRateUncertaintyMetersPerSecond));
  
          builder.append(String.format(
                  format,
                  "AccumulatedDeltaRangeState",
                  getAccumulatedDeltaRangeStateString()));
  
          builder.append(String.format(
                  formatWithUncertainty,
                  "AccumulatedDeltaRangeMeters",
                  mAccumulatedDeltaRangeMeters,
                  "AccumulatedDeltaRangeUncertaintyMeters",
                  mAccumulatedDeltaRangeUncertaintyMeters));
  
          builder.append(String.format(
                  format,
                  "CarrierFrequencyHz",
                  hasCarrierFrequencyHz() ? mCarrierFrequencyHz : null));
  
          builder.append(String.format(
                  format,
                  "CarrierCycles",
                  hasCarrierCycles() ? mCarrierCycles : null));
  
          builder.append(String.format(
                  formatWithUncertainty,
                  "CarrierPhase",
                  hasCarrierPhase() ? mCarrierPhase : null,
                  "CarrierPhaseUncertainty",
                  hasCarrierPhaseUncertainty() ? mCarrierPhaseUncertainty : null));
  
          builder.append(String.format(format, "MultipathIndicator", getMultipathIndicatorString()));
  
          builder.append(String.format(
                  format,
                  "SnrInDb",
                  hasSnrInDb() ? mSnrInDb : null));
          builder.append(String.format(
                  format,
                  "AgcLevelDb",
                  hasAutomaticGainControlLevelDb() ? mAutomaticGainControlLevelInDb : null));
          builder.append(String.format(
                  format,
                  "CodeType",
                  hasCodeType() ? mCodeType : null));
  
          return builder.toString();
      }
  
      private void initialize() {
          mFlags = HAS_NO_FLAGS;
          setSvid(0);
          setTimeOffsetNanos(Long.MIN_VALUE);
          setState(STATE_UNKNOWN);
          setReceivedSvTimeNanos(Long.MIN_VALUE);
          setReceivedSvTimeUncertaintyNanos(Long.MAX_VALUE);
          setCn0DbHz(Double.MIN_VALUE);
          setPseudorangeRateMetersPerSecond(Double.MIN_VALUE);
          setPseudorangeRateUncertaintyMetersPerSecond(Double.MIN_VALUE);
          setAccumulatedDeltaRangeState(ADR_STATE_UNKNOWN);
          setAccumulatedDeltaRangeMeters(Double.MIN_VALUE);
          setAccumulatedDeltaRangeUncertaintyMeters(Double.MIN_VALUE);
          resetCarrierFrequencyHz();
          resetCarrierCycles();
          resetCarrierPhase();
          resetCarrierPhaseUncertainty();
          setMultipathIndicator(MULTIPATH_INDICATOR_UNKNOWN);
          resetSnrInDb();
          resetAutomaticGainControlLevel();
          resetCodeType();
      }
  
      private void setFlag(int flag) {
          mFlags |= flag;
      }
  
      private void resetFlag(int flag) {
          mFlags &= ~flag;
      }
  
      private boolean isFlagSet(int flag) {
          return (mFlags & flag) == flag;
      }
  }
  