538 lines
19 KiB
Java
538 lines
19 KiB
Java
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/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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package android.location;
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import android.annotation.FlaggedApi;
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import android.annotation.IntDef;
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import android.annotation.IntRange;
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import android.annotation.NonNull;
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import android.annotation.TestApi;
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import android.location.flags.Flags;
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import android.os.Parcel;
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import android.os.Parcelable;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.security.InvalidParameterException;
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/**
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* A class containing a GNSS satellite Navigation Message.
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*/
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public final class GnssNavigationMessage implements Parcelable {
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private static final byte[] EMPTY_ARRAY = new byte[0];
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/**
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* The type of the GNSS Navigation Message
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* @hide
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*/
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@Retention(RetentionPolicy.SOURCE)
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@IntDef({TYPE_UNKNOWN, TYPE_GPS_L1CA, TYPE_GPS_L2CNAV, TYPE_GPS_L5CNAV, TYPE_GPS_CNAV2,
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TYPE_SBS, TYPE_GLO_L1CA, TYPE_QZS_L1CA, TYPE_BDS_D1, TYPE_BDS_D2, TYPE_BDS_CNAV1,
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TYPE_BDS_CNAV2, TYPE_GAL_I, TYPE_GAL_F, TYPE_IRN_L5CA, TYPE_IRN_L5, TYPE_IRN_L1})
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public @interface GnssNavigationMessageType {}
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// The following enumerations must be in sync with the values declared in gps.h
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/** Message type unknown */
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public static final int TYPE_UNKNOWN = 0;
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/** GPS L1 C/A message contained in the structure. */
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public static final int TYPE_GPS_L1CA = 0x0101;
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/** GPS L2-CNAV message contained in the structure. */
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public static final int TYPE_GPS_L2CNAV = 0x0102;
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/** GPS L5-CNAV message contained in the structure. */
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public static final int TYPE_GPS_L5CNAV = 0x0103;
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/** GPS CNAV-2 message contained in the structure. */
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public static final int TYPE_GPS_CNAV2 = 0x0104;
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/** SBAS message contained in the structure. */
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public static final int TYPE_SBS = 0x0201;
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/** Glonass L1 CA message contained in the structure. */
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public static final int TYPE_GLO_L1CA = 0x0301;
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/** QZSS L1 C/A message contained in the structure. */
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public static final int TYPE_QZS_L1CA = 0x0401;
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/** Beidou D1 message contained in the structure. */
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public static final int TYPE_BDS_D1 = 0x0501;
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/** Beidou D2 message contained in the structure. */
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public static final int TYPE_BDS_D2 = 0x0502;
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/** Beidou CNAV1 message contained in the structure. */
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public static final int TYPE_BDS_CNAV1 = 0x0503;
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/** Beidou CNAV2 message contained in the structure. */
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public static final int TYPE_BDS_CNAV2 = 0x0504;
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/** Galileo I/NAV message contained in the structure. */
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public static final int TYPE_GAL_I = 0x0601;
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/** Galileo F/NAV message contained in the structure. */
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public static final int TYPE_GAL_F = 0x0602;
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/**
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* NavIC L5 C/A message contained in the structure.
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*/
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public static final int TYPE_IRN_L5CA = 0x0701;
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/** NavIC L5 message contained in the structure. */
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@FlaggedApi(Flags.FLAG_GNSS_API_NAVIC_L1)
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public static final int TYPE_IRN_L5 = 0x0702;
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/** NavIC L1 message contained in the structure. */
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@FlaggedApi(Flags.FLAG_GNSS_API_NAVIC_L1)
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public static final int TYPE_IRN_L1 = 0x0703;
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/**
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* The status of the GNSS Navigation Message
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* @hide
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*/
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@Retention(RetentionPolicy.SOURCE)
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@IntDef({STATUS_UNKNOWN, STATUS_PARITY_PASSED, STATUS_PARITY_REBUILT})
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public @interface GnssNavigationMessageStatus {}
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/**
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* The Navigation Message Status is 'unknown'.
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*/
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public static final int STATUS_UNKNOWN = 0;
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/**
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* The Navigation Message was received without any parity error in its navigation words.
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*/
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public static final int STATUS_PARITY_PASSED = (1<<0);
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/**
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* The Navigation Message was received with words that failed parity check, but the receiver was
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* able to correct those words.
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*/
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public static final int STATUS_PARITY_REBUILT = (1<<1);
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/**
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* Used for receiving GNSS satellite Navigation Messages from the GNSS engine.
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*
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* <p>You can implement this interface and call
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* {@link LocationManager#registerGnssNavigationMessageCallback}.
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*/
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public static abstract class Callback {
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/**
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* The status of GNSS Navigation Message event.
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* @deprecated Do not use.
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* @hide
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*/
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@Retention(RetentionPolicy.SOURCE)
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@IntDef({STATUS_NOT_SUPPORTED, STATUS_READY, STATUS_LOCATION_DISABLED})
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public @interface GnssNavigationMessageStatus {}
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/**
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* The system does not support tracking of GNSS Navigation Messages.
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*
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* This status will not change in the future.
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*
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* @deprecated Do not use.
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*/
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@Deprecated
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public static final int STATUS_NOT_SUPPORTED = 0;
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/**
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* GNSS Navigation Messages are successfully being tracked, it will receive updates once
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* they are available.
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*
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* @deprecated Do not use.
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*/
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@Deprecated
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public static final int STATUS_READY = 1;
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/**
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* GNSS provider or Location is disabled, updated will not be received until they are
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* enabled.
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*
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* @deprecated Do not use.
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*/
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@Deprecated
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public static final int STATUS_LOCATION_DISABLED = 2;
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/**
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* Returns the latest collected GNSS Navigation Message.
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*/
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public void onGnssNavigationMessageReceived(GnssNavigationMessage event) {}
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/**
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* Returns the latest status of the GNSS Navigation Messages sub-system.
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*
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* @deprecated Do not rely on this callback. From Android S onwards this callback will be
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* invoked once with {@link #STATUS_READY} in all cases for backwards compatibility, and
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* then never invoked again. Use LocationManager APIs if you need to determine if
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* GNSS navigation messages are supported or if location is off, etc...
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*/
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@Deprecated
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public void onStatusChanged(@GnssNavigationMessageStatus int status) {}
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}
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// End enumerations in sync with gps.h
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private int mType;
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private int mSvid;
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private int mMessageId;
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private int mSubmessageId;
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private byte[] mData;
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private int mStatus;
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/**
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* @hide
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*/
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@TestApi
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public GnssNavigationMessage() {
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initialize();
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}
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/**
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* Sets all contents to the values stored in the provided object.
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* @hide
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*/
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@TestApi
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public void set(GnssNavigationMessage navigationMessage) {
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mType = navigationMessage.mType;
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mSvid = navigationMessage.mSvid;
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mMessageId = navigationMessage.mMessageId;
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mSubmessageId = navigationMessage.mSubmessageId;
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mData = navigationMessage.mData;
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mStatus = navigationMessage.mStatus;
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}
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/**
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* Resets all the contents to its original state.
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* @hide
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*/
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@TestApi
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public void reset() {
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initialize();
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}
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/**
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* Gets the type of the navigation message contained in the object.
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*/
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@GnssNavigationMessageType
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public int getType() {
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return mType;
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}
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/**
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* Sets the type of the navigation message.
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* @hide
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*/
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@TestApi
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public void setType(@GnssNavigationMessageType int value) {
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mType = value;
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}
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/**
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* Gets a string representation of the 'type'.
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* For internal and logging use only.
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*/
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private String getTypeString() {
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switch (mType) {
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case TYPE_UNKNOWN:
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return "Unknown";
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case TYPE_GPS_L1CA:
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return "GPS L1 C/A";
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case TYPE_GPS_L2CNAV:
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return "GPS L2-CNAV";
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case TYPE_GPS_L5CNAV:
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return "GPS L5-CNAV";
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case TYPE_GPS_CNAV2:
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return "GPS CNAV2";
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case TYPE_SBS:
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return "SBS";
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case TYPE_GLO_L1CA:
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return "Glonass L1 C/A";
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case TYPE_QZS_L1CA:
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return "QZSS L1 C/A";
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case TYPE_BDS_D1:
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return "Beidou D1";
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case TYPE_BDS_D2:
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return "Beidou D2";
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case TYPE_BDS_CNAV1:
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return "Beidou CNAV1";
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case TYPE_BDS_CNAV2:
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return "Beidou CNAV2";
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case TYPE_GAL_I:
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return "Galileo I";
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case TYPE_GAL_F:
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return "Galileo F";
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case TYPE_IRN_L5CA:
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return "NavIC L5 C/A";
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default:
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if (Flags.gnssApiNavicL1()) {
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if (mType == TYPE_IRN_L5) {
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return "NavIC L5";
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} else if (mType == TYPE_IRN_L1) {
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return "NavIC L1";
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}
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}
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return "<Invalid:" + mType + ">";
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}
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}
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/**
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* Gets the satellite ID.
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*
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* <p>Range varies by constellation. See definition at {@code GnssStatus#getSvid(int)}
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*/
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@IntRange(from = 1, to = 200)
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public int getSvid() {
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return mSvid;
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}
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/**
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* Sets the satellite ID.
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* @hide
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*/
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@TestApi
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public void setSvid(@IntRange(from = 1, to = 200) int value) {
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mSvid = value;
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}
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/**
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* Gets the Message identifier.
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*
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* <p>This provides an index to help with complete Navigation Message assembly. Similar
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* identifiers within the data bits themselves often supplement this information, in ways even
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* more specific to each message type; see the relevant satellite constellation ICDs for
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* details.
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*
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* <ul>
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* <li> For GPS L1 C/A subframe 4 and 5, this value corresponds to the 'frame id' of the
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* navigation message, in the range of 1-25 (Subframe 1, 2, 3 does not contain a 'frame id' and
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* this value can be set to -1.)</li>
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* <li> For Glonass L1 C/A, this refers to the frame ID, in the range of 1-5.</li>
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* <li> For BeiDou D1, this refers to the frame number in the range of 1-24</li>
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* <li> For Beidou D2, this refers to the frame number, in the range of 1-120</li>
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* <li> For Galileo F/NAV nominal frame structure, this refers to the subframe number, in the
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* range of 1-12</li>
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* <li> For Galileo I/NAV nominal frame structure, this refers to the subframe number in the
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* range of 1-24</li>
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* <li> For SBAS and Beidou CNAV2, this is unused and can be set to -1.</li>
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* <li> For QZSS L1 C/A subframe 4 and 5, this value corresponds to the 'frame id' of the
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* navigation message, in the range of 1-25 (Subframe 1, 2, 3 does not contain a 'frame id' and
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* this value can be set to -1.)</li>
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* <li> For Beidou CNAV1 this refers to the page type number in the range of 1-63.</li>
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* <li> For NavIC L5 subframe 3 and 4, this value corresponds to the Message Id of the
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* navigation message, in the range of 1-63. (Subframe 1 and 2 does not contain a message type
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* id and this value can be set to -1.)</li>
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* <li> For NavIC L1 subframe 3, this value corresponds to the Message Id of the navigation
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* message, in the range of 1-63. (Subframe 1 and 2 does not contain a message type id and this
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* value can be set to -1.)</li>
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* </ul>
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*/
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@IntRange(from = -1, to = 120)
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public int getMessageId() {
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return mMessageId;
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}
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/**
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* Sets the Message Identifier.
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* @hide
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*/
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@TestApi
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public void setMessageId(@IntRange(from = -1, to = 120) int value) {
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mMessageId = value;
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}
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/**
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* Gets the sub-message identifier, relevant to the {@link #getType()} of the message.
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*
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* <ul>
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* <li> For GPS L1 C/A, BeiDou D1 & BeiDou D2, the submessage id corresponds to the subframe
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* number of the navigation message, in the range of 1-5.</li>
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* <li>For Glonass L1 C/A, this refers to the String number, in the range from 1-15</li>
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* <li>For Galileo F/NAV, this refers to the page type in the range 1-6</li>
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* <li>For Galileo I/NAV, this refers to the word type in the range 1-10+</li>
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* <li>For Galileo in particular, the type information embedded within the data bits may be even
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* more useful in interpretation, than the nominal page and word types provided in this
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* field.</li>
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* <li> For SBAS, the submessage id corresponds to the message type, in the range 1-63.</li>
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* <li> For Beidou CNAV1, the submessage id corresponds to the subframe number of the
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|
|
* navigation message, in the range of 1-3.</li>
|
||
|
|
* <li> For Beidou CNAV2, the submessage id corresponds to the message type, in the range
|
||
|
|
* 1-63.</li>
|
||
|
|
* <li> For NavIC L5, the submessage id corresponds to the subframe number of the navigation
|
||
|
|
* message, in the range of 1-4.</li>
|
||
|
|
* <li> For NavIC L1, the submessage id corresponds to the subframe number of the navigation
|
||
|
|
* message, in the range of 1-3.</li>
|
||
|
|
* </ul>
|
||
|
|
*/
|
||
|
|
@IntRange(from = 1)
|
||
|
|
public int getSubmessageId() {
|
||
|
|
return mSubmessageId;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the Sub-message identifier.
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
@TestApi
|
||
|
|
public void setSubmessageId(@IntRange(from = 1) int value) {
|
||
|
|
mSubmessageId = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the data of the reported GNSS message.
|
||
|
|
*
|
||
|
|
* <p>The bytes (or words) specified using big endian format (MSB first).
|
||
|
|
*
|
||
|
|
* <ul>
|
||
|
|
* <li>For GPS L1 C/A, NavIC L5, Beidou D1 & Beidou D2, each subframe contains 10
|
||
|
|
* 30-bit words. Each word (30 bits) should be fit into the last 30 bits in a 4-byte word (skip
|
||
|
|
* B31 and B32), with MSB first, for a total of 40 bytes, covering a time period of 6, 6, and
|
||
|
|
* 0.6 seconds, respectively.</li>
|
||
|
|
* <li>For Glonass L1 C/A, each string contains 85 data bits, including the checksum. These
|
||
|
|
* bits should be fit into 11 bytes, with MSB first (skip B86-B88), covering a time period of 2
|
||
|
|
* seconds.</li>
|
||
|
|
* <li>For Galileo F/NAV, each word consists of 238-bit (sync & tail symbols excluded). Each
|
||
|
|
* word should be fit into 30-bytes, with MSB first (skip B239, B240), covering a time period of
|
||
|
|
* 10 seconds.</li>
|
||
|
|
* <li>For Galileo I/NAV, each page contains 2 page parts, even and odd, with a total of 2x114 =
|
||
|
|
* 228 bits, (sync & tail excluded) that should be fit into 29 bytes, with MSB first (skip
|
||
|
|
* B229-B232).</li>
|
||
|
|
* <li>For SBAS, each block consists of 250 data bits, that should be fit into 32 bytes. MSB
|
||
|
|
* first (skip B251-B256).</li>
|
||
|
|
* <li>For Beidou CNAV1, subframe #1 consists of 14 data bits, that should be fit into 2
|
||
|
|
* bytes. MSB first (skip B15-B16). subframe #2 consists of 600 bits that should be fit into
|
||
|
|
* 75 bytes. subframe #3 consists of 264 data bits that should be fit into 33 bytes.</li>
|
||
|
|
* <li>For Beidou CNAV2, each subframe consists of 288 data bits, that should be fit into 36
|
||
|
|
* bytes.</li>
|
||
|
|
* <li> For NavIC L1, subframe #1 consists of 9 data bits that should be fit into 2 bytes (skip
|
||
|
|
* B10-B16). subframe #2 consists of 600 bits that should be fit into 75 bytes. subframe #3
|
||
|
|
* consists of 274 data bits that should be fit into 35 bytes (skip B275-B280).</li>
|
||
|
|
* </ul>
|
||
|
|
*/
|
||
|
|
@NonNull
|
||
|
|
public byte[] getData() {
|
||
|
|
return mData;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the data associated with the Navigation Message.
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
@TestApi
|
||
|
|
public void setData(byte[] value) {
|
||
|
|
if (value == null) {
|
||
|
|
throw new InvalidParameterException("Data must be a non-null array");
|
||
|
|
}
|
||
|
|
|
||
|
|
mData = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the Status of the navigation message contained in the object.
|
||
|
|
*/
|
||
|
|
@GnssNavigationMessageStatus
|
||
|
|
public int getStatus() {
|
||
|
|
return mStatus;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the status of the navigation message.
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
@TestApi
|
||
|
|
public void setStatus(@GnssNavigationMessageStatus int value) {
|
||
|
|
mStatus = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets a string representation of the 'status'.
|
||
|
|
* For internal and logging use only.
|
||
|
|
*/
|
||
|
|
private String getStatusString() {
|
||
|
|
switch (mStatus) {
|
||
|
|
case STATUS_UNKNOWN:
|
||
|
|
return "Unknown";
|
||
|
|
case STATUS_PARITY_PASSED:
|
||
|
|
return "ParityPassed";
|
||
|
|
case STATUS_PARITY_REBUILT:
|
||
|
|
return "ParityRebuilt";
|
||
|
|
default:
|
||
|
|
return "<Invalid:" + mStatus + ">";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public static final @android.annotation.NonNull Creator<GnssNavigationMessage> CREATOR =
|
||
|
|
new Creator<GnssNavigationMessage>() {
|
||
|
|
@Override
|
||
|
|
public GnssNavigationMessage createFromParcel(Parcel parcel) {
|
||
|
|
GnssNavigationMessage navigationMessage = new GnssNavigationMessage();
|
||
|
|
|
||
|
|
navigationMessage.setType(parcel.readInt());
|
||
|
|
navigationMessage.setSvid(parcel.readInt());
|
||
|
|
navigationMessage.setMessageId(parcel.readInt());
|
||
|
|
navigationMessage.setSubmessageId(parcel.readInt());
|
||
|
|
int dataLength = parcel.readInt();
|
||
|
|
byte[] data = new byte[dataLength];
|
||
|
|
parcel.readByteArray(data);
|
||
|
|
navigationMessage.setData(data);
|
||
|
|
navigationMessage.setStatus(parcel.readInt());
|
||
|
|
|
||
|
|
return navigationMessage;
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public GnssNavigationMessage[] newArray(int size) {
|
||
|
|
return new GnssNavigationMessage[size];
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public void writeToParcel(Parcel parcel, int flags) {
|
||
|
|
parcel.writeInt(mType);
|
||
|
|
parcel.writeInt(mSvid);
|
||
|
|
parcel.writeInt(mMessageId);
|
||
|
|
parcel.writeInt(mSubmessageId);
|
||
|
|
parcel.writeInt(mData.length);
|
||
|
|
parcel.writeByteArray(mData);
|
||
|
|
parcel.writeInt(mStatus);
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public int describeContents() {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public String toString() {
|
||
|
|
final String format = " %-15s = %s\n";
|
||
|
|
StringBuilder builder = new StringBuilder("GnssNavigationMessage:\n");
|
||
|
|
|
||
|
|
builder.append(String.format(format, "Type", getTypeString()));
|
||
|
|
builder.append(String.format(format, "Svid", mSvid));
|
||
|
|
builder.append(String.format(format, "Status", getStatusString()));
|
||
|
|
builder.append(String.format(format, "MessageId", mMessageId));
|
||
|
|
builder.append(String.format(format, "SubmessageId", mSubmessageId));
|
||
|
|
|
||
|
|
builder.append(String.format(format, "Data", "{"));
|
||
|
|
String prefix = " ";
|
||
|
|
for(byte value : mData) {
|
||
|
|
builder.append(prefix);
|
||
|
|
builder.append(value);
|
||
|
|
prefix = ", ";
|
||
|
|
}
|
||
|
|
builder.append(" }");
|
||
|
|
|
||
|
|
return builder.toString();
|
||
|
|
}
|
||
|
|
|
||
|
|
private void initialize() {
|
||
|
|
mType = TYPE_UNKNOWN;
|
||
|
|
mSvid = 0;
|
||
|
|
mMessageId = -1;
|
||
|
|
mSubmessageId = -1;
|
||
|
|
mData = EMPTY_ARRAY;
|
||
|
|
mStatus = STATUS_UNKNOWN;
|
||
|
|
}
|
||
|
|
}
|