1 /* 2 * Copyright (C) 2017 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.car.vms; 18 19 import android.car.annotation.FutureFeature; 20 import android.os.Parcel; 21 import android.os.Parcelable; 22 23 import java.util.Objects; 24 25 /** 26 * A VMS Layer which can be subscribed to by VMS clients. 27 * Consists of the layer ID and the layer version. 28 * 29 * @hide 30 */ 31 @FutureFeature 32 public final class VmsLayer implements Parcelable { 33 34 // The layer ID. 35 private int mId; 36 37 // The layer version. 38 private int mVersion; 39 VmsLayer(int id, int version)40 public VmsLayer(int id, int version) { 41 mId = id; 42 mVersion = version; 43 } 44 getId()45 public int getId() { 46 return mId; 47 } 48 getVersion()49 public int getVersion() { 50 return mVersion; 51 } 52 53 /** 54 * Checks the two objects for equality by comparing their IDs and Versions. 55 * 56 * @param o the {@link VmsLayer} to which this one is to be checked for equality 57 * @return true if the underlying objects of the VmsLayer are both considered equal 58 */ 59 @Override equals(Object o)60 public boolean equals(Object o) { 61 if (!(o instanceof VmsLayer)) { 62 return false; 63 } 64 VmsLayer p = (VmsLayer) o; 65 return Objects.equals(p.mId, mId) && Objects.equals(p.mVersion, mVersion); 66 } 67 68 /** 69 * Compute a hash code similarly tp {@link android.util.Pair} 70 * 71 * @return a hashcode of the Pair 72 */ 73 @Override hashCode()74 public int hashCode() { 75 return Objects.hash(mId, mVersion); 76 } 77 78 @Override toString()79 public String toString() { 80 return "VmsLayer{" + mId + " " + mVersion + "}"; 81 } 82 83 84 // Parcelable related methods. 85 public static final Parcelable.Creator<VmsLayer> CREATOR = new 86 Parcelable.Creator<VmsLayer>() { 87 public VmsLayer createFromParcel(Parcel in) { 88 return new VmsLayer(in); 89 } 90 91 public VmsLayer[] newArray(int size) { 92 return new VmsLayer[size]; 93 } 94 }; 95 96 @Override writeToParcel(Parcel out, int flags)97 public void writeToParcel(Parcel out, int flags) { 98 out.writeInt(mId); 99 out.writeInt(mVersion); 100 } 101 102 @Override describeContents()103 public int describeContents() { 104 return 0; 105 } 106 VmsLayer(Parcel in)107 private VmsLayer(Parcel in) { 108 readFromParcel(in); 109 } 110 readFromParcel(Parcel in)111 private void readFromParcel(Parcel in) { 112 mId = in.readInt(); 113 mVersion = in.readInt(); 114 } 115 }