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      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.annotation.SystemApi;
     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  *
     28  * @hide
     29  */
     30 @SystemApi
     31 public final class VmsLayer implements Parcelable {
     32 
     33     // The layer Type.
     34     private int mType;
     35 
     36     // The layer Subtype.
     37     private int mSubtype;
     38 
     39     // The layer version.
     40     private int mVersion;
     41 
     42     public VmsLayer(int type, int subtype, int version) {
     43         mType = type;
     44         mSubtype = subtype;
     45         mVersion = version;
     46     }
     47 
     48     public int getType() {
     49         return mType;
     50     }
     51 
     52     public int getSubtype() {
     53         return mSubtype;
     54     }
     55 
     56     public int getVersion() {
     57         return mVersion;
     58     }
     59 
     60     /**
     61      * Checks the two objects for equality by comparing their IDs and Versions.
     62      *
     63      * @param o the {@link VmsLayer} to which this one is to be checked for equality
     64      * @return true if the underlying objects of the VmsLayer are both considered equal
     65      */
     66     @Override
     67     public boolean equals(Object o) {
     68         if (!(o instanceof VmsLayer)) {
     69             return false;
     70         }
     71         VmsLayer p = (VmsLayer) o;
     72         return Objects.equals(p.mType, mType) &&
     73             Objects.equals(p.mSubtype, mSubtype) &&
     74             Objects.equals(p.mVersion, mVersion);
     75     }
     76 
     77     /**
     78      * Compute a hash code similarly tp {@link android.util.Pair}
     79      *
     80      * @return a hashcode of the Pair
     81      */
     82     @Override
     83     public int hashCode() {
     84         return Objects.hash(mType, mSubtype, mVersion);
     85     }
     86 
     87     @Override
     88     public String toString() {
     89         return "VmsLayer{ Type: " + mType + ", Sub type: " + mSubtype + ", Version: " + mVersion + "}";
     90     }
     91 
     92 
     93     // Parcelable related methods.
     94     public static final Parcelable.Creator<VmsLayer> CREATOR = new
     95             Parcelable.Creator<VmsLayer>() {
     96                 public VmsLayer createFromParcel(Parcel in) {
     97                     return new VmsLayer(in);
     98                 }
     99 
    100                 public VmsLayer[] newArray(int size) {
    101                     return new VmsLayer[size];
    102                 }
    103             };
    104 
    105     @Override
    106     public void writeToParcel(Parcel out, int flags) {
    107         out.writeInt(mType);
    108         out.writeInt(mSubtype);
    109         out.writeInt(mVersion);
    110     }
    111 
    112     @Override
    113     public int describeContents() {
    114         return 0;
    115     }
    116 
    117     private VmsLayer(Parcel in) {
    118         readFromParcel(in);
    119     }
    120 
    121     private void readFromParcel(Parcel in) {
    122         mType = in.readInt();
    123         mSubtype = in.readInt();
    124         mVersion = in.readInt();
    125     }
    126 }