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      1 /*
      2  * Copyright (C) 2014 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.media;
     18 
     19 /**
     20  * The AudioHandle is used by the audio framework implementation to
     21  * uniquely identify a particular component of the routing topology
     22  * (AudioPort or AudioPatch)
     23  * It is not visible or used at the API.
     24  */
     25 class AudioHandle {
     26     private final int mId;
     27 
     28     AudioHandle(int id) {
     29         mId = id;
     30     }
     31 
     32     int id() {
     33         return mId;
     34     }
     35 
     36     @Override
     37     public boolean equals(Object o) {
     38         if (o == null || !(o instanceof AudioHandle)) {
     39             return false;
     40         }
     41         AudioHandle ah = (AudioHandle)o;
     42         return mId == ah.id();
     43     }
     44 
     45     @Override
     46     public int hashCode() {
     47         return mId;
     48     }
     49 
     50     @Override
     51     public String toString() {
     52         return Integer.toString(mId);
     53     }
     54 }
     55